Remove and disassemble the hydraulic lift cargo elevator lowering valve, blow out the plunger with compressed air, then install it and reinstall it.Guide rail type cargo elevators are a type of equipment for transporting heavy objects up and down, and have great applications in factories, workshops and other places. For this type of heavy machinery, its daily maintenance and upkeep are very important,GaobeidianHydraulic aluminum alloy lifting platform, because some small details can have a significant impact on the operation safety of the equipment if not paid attention to. Therefore, attention should be paid to the daily maintenance of cargo elevators.Gaobeidian,Characteristics of hydraulic elevators: Hydraulic lifting platform products are divided into curved arm hydraulic lifting machines, scissor fork hydraulic lifting machines, mast hydraulic elevators, and straight arm hydraulic elevators according to their working modes. Hydraulic elevator is a replacement product of folding arm elevator (lifting platform) and scissor fork elevator (lifting platform). It can be widely used for the decoration and decoration of stations, docks, airports, hotels, posts and telecommunications, garages, cleaning companies, public building facades, or the installation and maintenance of power systems, etc. This elevator has the advantages of light weight, self-propelled walking, electric starting, self supporting legs, simple operation, large working area, and especially the ability to cross obstacles for high-altitude operations.Each department's electric brush should be kept clean, and the brush pressure should be adjusted to ensure that its area is not less than %Arta,GaobeidianPlatform hydraulic lifting, there are not many manufacturers of corresponding boarding bridges. Many boarding bridge companies are leather bag companies, and they do not produce them themselves, resulting in high prices. What is important is that they do not have a good understanding of the technology of car booths, and there are often deviations when passing on the technical requirements of direct customers to the manufacturers. Therefore, customers who purchase boarding bridges can directly find professional manufacturers. When choosing a boarding bridge, the first thing to consider is the range of use, utilization, rated weight, and other factors of the product, and choose a boarding bridge that is suitable for the requirements of the unit. Conduct market research based on the proposed technical parameters. The first condition for selecting a supplier is to consider the manufacturer of the boarding axle, and then the after-sales service capability. As long as it is a fixed boarding bridge with good product quality, excellent performance, and complete equipment it can be chosen at a reasonable price.Hydraulic oil should be kept clean and replaced every months; When repairing, maintaining, and cleaning the elevator, be sure to support the support rod.What are the pressures on lifting platforms? The movement of lifting platforms has always been a concern for us. Our usage scenarios are uncertain and most of them are part-time workers. Therefore, in order to better attract customers, we are constantly researching mobile lifting platforms to meet different needs. However for some large logistics companies or enterprise processing plants, we are still accustomed to using fixed elevators, He has a huge load capacity and strong stability, which can meet the needs of many customers, which is also the use of lifting platforms in China in recent years.

Every month, it should be ensured to add butter twice to the transmission position where the grease nipple is located. For areas where butter cannot be added, it is necessary to clear the oil circuit or replace the grease nipple until butter can be added. Otherwise, it is prohibited to use the equipment.When the motor connection of the elevator is incorrect, when a coil, coil group, or one phase winding group is connected in reverse, it can cause serious three-phase current imbalance and cause the winding to overheat.How to maintain elevators in winter is one reason and the primary reason. Many workers in other industries do not know that hydraulic elevators use different types of hydraulic oil in summer and winter. Often, at low temperatures, the hydraulic oil used in summer can become, or even freeze. After entering low temperatures in winter, it is important to remember to replace hydraulic oil containing antifreeze, which is suitable for working at low temperatures.Range,With the increasing demand for boarding bridges mobile boarding bridge merchants are increasingly interested in using boarding bridges to provide customers with the appearance of hydraulic boarding bridges, and the demand for boarding bridges is also increasing. However, there are not many manufacturers of corresponding boarding bridges. Many boarding bridge companies are leather bag companies, and they do not produce them themselves,GaobeidianHydraulic fixed lifting platform, resulting in high prices. What is important is that they do not have a good understanding of the technology of car booths, and there are often deviations when passing on the technical requirements of direct customers to the manufacturers. Therefore, customers who purchase boarding bridges can directly find professional manufacturers. When choosing a boarding bridge, the first thing to consider is the range of use, frequency of work, utilization, rated weight, and other factors of the product, and choose a boarding bridge that is suitable for the requirements of the unit. Conduct market research based on the proposed technical parameters. The first condition for selecting a supplier is to consider the manufacturer of the boarding axle, and then the after-sales service capability. As long as it is a fixed boarding bridge with good product quality, excellent performance, and complete equipment, and all technical indicators meet the design requirements. When in use, only the power supply needs to be connected, and the hydraulic and electrical systems basically do not need to be adjusted.Check the hydraulic oil quality and level. When the lifting platform is raised to a high position, the hydraulic oil level should be - millimeters higher than the bottom of the oil tank. When the color of the hydraulic oil darkens, the oil becomes sticky, or there are foreign objects such as gravel in the oil, the hydraulic oil should be replaced in a timely manner. The hydraulic system of the lifting platform should be checked for hydraulic and pipeline connections. If the pipeline is damaged, it should be replaced immediately; When there is looseness in the connection part, tighten the pipe joint.

Carefully prepare a special construction plan for installation and provide technical disclosure to the installation personnel. Our company has been engaged in various types of scissor lift manufacturers and other materials for years, and operates with integrity. Welcome to call!Which one is better,How to maintain elevators in winter is one reason and the primary reason. Many workers in other industries do not know that hydraulic elevators use different types of hydraulic oil in summer and winter. Often, at low temperatures, the hydraulic oil used in summer can become, it is important to remember to replace hydraulic oil containing antifreeze, which is suitable for working at low temperatures.For the introduction of daily maintenance of lifting cargo elevators the brakes of each organization should usually be inspected and adjusted to ensure sensitivity and reliability. On the surface, there should be no dirt present. If there is any dirt, it must be washed off with gasoline or thinner.At this point, if the high-altitude work platform is overloaded, it may cause damage to the components and cause some mechanical failures.Gaobeidian,There are problems with the hydraulic torque converter and compensation system of mobile elevators, such as weak torque converter, power shift failure, high oil temperature, insufficient hydraulic torque converter inadequate pressure adjustment, insufficient back pressure. Check the quality of torque converter oil (whether hydraulic transmission oil is misused), dosage, torque converter pressure regulating valve, back pressure valve and their set pressure value. Power shift failure. Quick return valve, pressure reducing valve, power transmission valve The directional valve is stuck or leaking internally. Oil pollution is severe. Check the cause of the valve sticking and eliminate it accordingly. Filter or replace the hydraulic oil. If the oil temperature rises too much, check if there is any problem with the cooler. Check the quality of the hydraulic oil. The brand hydraulic boarding bridge, also known as the hydraulic loading and unloading platform, can achieve rapid loading and unloading of goods. The structure design is simple, the use is flexible and convenient, and the work efficiency is high. It is widely used and widely popularized in the market.Elevators are now very popular among people and can easily transport goods to high-rise buildings. Among them, hydraulic elevators are more popular among people, and people can choose the one that suits them according to their actual situation. However, during normal work, it is important to pay attention to the lifting speed of hydraulic elevators and avoid making mistakes. So what factors will affect the lifting speed of hydraulic elevators?Signature recognition of.

What are the common faults of hydraulic lifting platforms? The hydraulic lifting platform's oil cylinder is severely damaged, and uneven damage to the inner sealing ring or obstacles inside can easily cause uneven stress, resulting in uneven lifting height of the oil cylinder. It is recommended to carefully check whether the oil cylinder is normal.Check, adjust, and replace defective parts of the heavy operating rod mechanism; Clean the valve components; Check the cleanliness of the hydraulic oil valve core for clamping (manufacturing,Small storeLifting table hydraulic pressure, installation issues, dirt issues)Small store,Common problems and specific solutions during the operation of hydraulic boarding bridges: motor phase loss (motor does not move and there is a buzzing sound)With the increasing demand for boarding bridges, mobile boarding bridge merchants are increasingly interested in using boarding bridges to provide customers with the appearance of hydraulic boarding bridges, and the demand for boarding bridges is also increasing. However, there are not many manufacturers of corresponding boarding bridges. Many boarding bridge companies are leather bag companies, and they do not produce them themselves, and there are often deviations when passing on the technical requirements of direct customers to the manufacturers. Therefore, customers who purchase boarding bridges can directly find professional manufacturers. When choosing a boarding bridge the first thing to consider is the range of use, utilization frequency of work, rated weight, and other factors of the product, and choose a boarding bridge that is suitable for the requirements of the unit. Conduct market research based on the proposed technical parameters. The first condition for selecting a supplier is to consider the manufacturer of the boarding axle, and then the after-sales service capability. As long as it is a fixed boarding bridge with good product quality,Small storeFixed hydraulic platform, excellent performance, and complete equipment, it can be chosen at a reasonable price.Faroe IslandsTalking about the daily maintenance and use of hydraulic lifting platform motors. Overloading is strictly prohibited, as overloading can increase the burden on the motor and in severe cases, cause the motor to burn out.The hook of the seat belt should not be hung on unstable or moving objects. High priced and various specifications of scissor lift manufacturers provide timely supply, with high cost-effectiveness, and have become the preferred brand for many wire products. Welcome to purchase!Talking about the daily maintenance and use of hydraulic lifting platform motors. Overloading is strictly prohibited, as overloading can increase the burden on the motor and in severe cases, cause the motor to burn out.

High altitude work is now also very common, and elevators are also highly demanded by the market. Many high-rise transportation tasks are completed by elevators, with high efficiency and reassuring safety. However, attention should also be paid to the installation of the elevator, otherwise there may be problems, and no one wants to see such a situation happen. What are the installation precautions for elevators?A sign of slowing down has occurred. After the speed slows down, consider the hydraulic oil flow rate first. The factors that affect hydraulic oil flow include: hydraulic pipelines, hydraulic valves, hydraulic oil pumps, motor speed control assembly, etc. The following editor will introduce to you the four reasons for the slower speed and the mediation methods.Novice operators: Due to their lack of understanding or lack of understanding of the operation methods of high-altitude work platforms such as mobile elevators, it is easy for them to make mistakes and cause equipment malfunctions. Operators in this area need to patiently learn and pass training before they can operate and use them.Discount,Each department's electric brush should be kept clean, and the brush pressure should be adjusted to ensure that its area is not less than %Hydraulic boarding axle; Streamline” The open hinge joint design increases the welding area by more than three times compared to ordinary tubular joints effectively extending the service life and simplifying maintenance.When working in a hot environment, pay attention to heat dissipation.

No matter what problem occurs, if encountering an unsolvable problem with a hydraulic lifting platform, it is better to produce it quickly and conveniently, and guide the manufacturer to solve it. Please pay attention to safety precautions during maintenance.technological innovation,Loosening: The newly processed and assembled components of high-altitude work platform equipment such as mobile elevators have a tendency to have geometric shapes and matching dimensions. In the early stages of equipment use, due to the influence of alternating loads such as impact and vibration, or factors such as heat and deformation, coupled with rapid wear and tear, it is easy to cause the previously fastened components of high-altitude work platform equipment such as mobile elevators to become loose.If the lowering valve is not tightly sealed, check if the lowering valve has electricity. If there is electricity, eliminate the malfunction of the lowering valve itself or replace the lowering valve. The slide valve of the lowering valve must be kept clean and move flexibly.The hydraulic system of the hydraulic boarding bridge has stable performance, low maintenance rate, and is sturdy and durable.Small store,Check, adjust, and replace defective parts of the heavy operating rod mechanism; Clean the valve components; Check the cleanliness of the hydraulic oil valve core for clamping (manufacturing, installation issues, then install it and reinstall it.No matter what problem occurs,Small storeScissor fork hydraulic lifting platform, if encountering an unsolvable problem with a hydraulic lifting platform, it is better to produce it quickly and conveniently, and guide the manufacturer to solve it. Please pay attention to safety precautions during maintenance.

What are the advantages of installing a guide rail type elevator for goods? The advantages of civil engineering are easy to install: there is no need for a machine room above the shaft, and the top layer can be installed at a height of more than meters. The computer room can be located within a radius of meters of the shaft, occupying an area of only - square meters. The hydraulic elevator is not equipped with a counterweight device to improve the utilization rate of the shaft area. The load and load cylinder of the hydraulic elevator directly act on the foundation pit, and the strength requirement for the shaft is low. A brick structure or brick concrete structure shaft is sufficient.Working at heights is a common practice nowadays, but it also has a certain degree of danger. So people invented hydraulic lifting platforms, which are more convenient to help people complete high-altitude operations. However people should also pay attention when using hydraulic lifting platforms, otherwise they can easily malfunction, which may lead to serious consequences. So what are the common faults of hydraulic lifting platforms?Giorgio CalabriaRegularly check all wires and cables for damage.Replace with new oil and do not intermittently use old oil, otherwise the moving parts in the system will accelerate wear.SerendahWhen using the distribution box, the electric leakage switch meets the requirements for construction elevators. If the fixed elevator installed is variable frequency, the selection of the leakage switch should be compatible with the frequency converter.In our daily life, hydraulic cargo elevators are increasingly widely used and loved by customers. As a lifting tool, the maintenance of hydraulic cargo elevators should not be careless. Below, the editor will introduce the daily maintenance of hydraulic cargo elevators.Drain and discard the hydraulic oil from the hydraulic lifting cargo elevator. For the outdoor guide rail elevator, tighten the joint and remove the oil filter. After cleaning, clean it with compressed air, and then return it to the oil tank and connect the pipeline.

Drain all the hydraulic oil in the oil tank, open the oil tank, take out the oil suction filter, clean it, and return it to the oil tank. Install it in its original position. Fill the fuel tank with new oil.When using the hydraulic lifting platform it is also necessary to check for overheating, as this equipment is equipped with a motor. If the motor is overheated, it may cause damage to the motor. However, replacing a motor is relatively expensive. Therefore, during driving or trial operation, if the motor is found to be overheated, it should be stopped immediately, and then the fault that caused the motor to overheat should be checked and eliminated, Only then can the machine continue to be used.The daily maintenance of guide rail type cargo elevators should ensure that the transmission position where the grease nipple is located needs to be lubricated twice a month. For areas where grease cannot be added, it is necessary to clear the oil circuit or replace the grease nipple until butter can be added. Otherwise, it is prohibited to use the equipment.original,When using, the four legs should be firmly supported on a solid ground (based on the walking wheel about to leave the ground), and sleepers can be used when necessary.Preparation before folding and installation of the elevator. Carefully prepare a special construction plan for installation and provide safety technical disclosure to the installation personnel.For the safety performance of high-altitude work platforms, it is necessary to have production technology, scientific processes, and strict management to ensure production. When in use, people, the environment, and machines are the three major links of high-altitude operations, and safety is the basic condition to ensure the smooth progress of high-altitude operations. In the following text, hypertension, or mental illness are not allowed to engage in high-altitude work tasks. Staff are not allowed to engage in high-altitude work while drinking alcohol or feeling mentally drained.

Firstly, it is necessary to use and operate the elevator correctly. The operators should receive systematic operation training: regular inspection of operating standards should be carried out, and any violations of elevator operation should be detectedService first,The open adjustment plate base makes it more convenient to clean debris. Professional projects include: manufacturers of scissor lifts and other related businesses. Merchants who wish to engage in this business are welcomeIn addition, it is strictly prohibited to use hammers or other tools during installation to prevent excessive axial or radial force from damaging bearings or gears. Be sure to tighten the installation bolts before tightening the tension bolts. Before installation, clean the anti rust oil on the motor input shaft, positioning boss, and elevator connection parts with gasoline or zinc sodium water. Its purpose is to ensure the tightness of the connection and the flexibility of operation, and to prevent unnecessary wear and tear.Today, the sudden cooling in Shandong has caught office workers and people off guard. Friends, be sure to add more clothes when going out. Shandong, as the hometown of elevators in China. There are countless manufacturers of all sizes. So,Check the hydraulic oil quality and level. When the lifting platform is raised to a high position, the hydraulic oil level should be - millimeters higher than the bottom of the oil tank. When the color of the hydraulic oil darkens, the oil becomes sticky, or there are foreign objects such as gravel in the oil, the hydraulic oil should be replaced in a timely manner. The hydraulic system of the lifting platform should be checked for hydraulic and pipeline connections. If the pipeline is damaged, it should be replaced immediately; When there is looseness in the connection part, with high efficiency and reassuring safety. However, attention should also be paid to the installation of the elevator, otherwise there may be problems, and no one wants to see such a situation happen. What are the installation precautions for elevators?Firstly, it is necessary to use and operate the elevator correctly. The operators should receive systematic operation training: regular inspection of operating standards should be carried out, and any violations of elevator operation should be detected

What should I pay attention to when starting a new mobile elevator? High priced and various specifications of scissor lift manufacturers welcome scrap merchants, industrial companies, enterprises and power departments to visit and negotiate with the company!Loosening: The newly processed and assembled components of high-altitude work platform equipment such as mobile elevators have a tendency to have geometric shapes and matching dimensions. In the early stages of equipment use, due to the influence of alternating loads such as impact and vibration, or factors such as heat and deformation, coupled with rapid wear and tear, it is easy to cause the previously fastened components of high-altitude work platform equipment such as mobile elevators to become loose.Botou,The power system inspection is the core, and the key to ensuring its normal operation is to use the hydraulic elevator. The sound of its operation can be used to determine whether it is operating normally and whether there is noise.The hydraulic system of the hydraulic boarding bridge has stable performance, high quality, low maintenance rate, and is sturdy and durable.Drobak,Signature recognition of.Elevators are now very popular among people and can easily transport goods to high-rise buildings. Among them, hydraulic elevators are more popular among people,BotouScissor type hydraulic lifting platform, and people can choose the one that suits them according to their actual situation. However, during normal work, it is important to pay attention to the lifting speed of hydraulic elevators and avoid making mistakes. So what factors will affect the lifting speed of hydraulic elevators?Mobile elevators are generally used in skyscrapers where electric elevators are used, as there is no need to stop midway, so fast elevators are needed. First go to the high-rise sky lobby (high-rise elevator lobby,BotouElectric lifting platform, Skylobby) from the ground, and then transfer to the ordinary elevator to the destination. Some new elevators use elevator pre calling systems,BotouScissor type hydraulic lifting platform, which can pre call designated floors in the lobby. These passenger elevators can be decorated beautifully according to customer needs. Some passenger elevators are also equipped with air conditioning and television, while others are set up in the cabin, so that customers can enjoy the scenery outside while riding.

Elevators are now very popular among people and can easily transport goods to high-rise buildings. Among them, hydraulic elevators are more popular among people, and people can choose the one that suits them according to their actual situation. However, during normal work, it is important to pay attention to the lifting speed of hydraulic elevators and avoid making mistakes. So what factors will affect the lifting speed of hydraulic elevators?Dirty normally closed valve; The solution is to remove the normally closed valve and use cleaning agent or cleaning. Long term scissor fork lift manufacturers have a complete range of products, excellent quality, and discounted pricesThe daily maintenance of guide rail type cargo elevators should ensure that the transmission position where the grease nipple is located needs to be lubricated twice a month. For areas where grease cannot be added, it is necessary to clear the oil circuit or replace the grease nipple until butter can be added. Otherwise, it is prohibited to use the equipment.market,Any product always has a break-in period when it is first used, so what precautions should we pay attention to during the break-in period when using a hydraulic lifting platform? Today, the editor will share this topic with everyone.At this point, if the high-altitude work platform is overloaded it may cause damage to the components and cause some mechanical failures.Once the freight elevator malfunctions, the maintenance unit shall arrive at the site within the specified time (the specific time is not specified in Beijing, but within minutes).

Loosening: The newly processed and assembled components of high-altitude work platform equipment such as mobile elevators have a tendency to have geometric shapes and matching dimensions. In the early stages of equipment use, due to the influence of alternating loads such as impact and vibration, or factors such as heat and deformation, coupled with rapid wear and tear, it is easy to cause the previously fastened components of high-altitude work platform equipment such as mobile elevators to become loose.Production department, as the probability of this situation occurring is relatively low.The current should exceed the rated current, the winding will not only overheat severely, but also burn out. When a star connected motor is mistakenly connected into a triangle, or a motor with multiple coil groups connected in series into a branch is mistakenly connected into two parallel branches, it will cause the winding and iron core to overheat and in severe cases, is composed of the power unit and the oil cylinder. The power unit has four outlets during production whether it is a scissor type lifting platform or a guide rail type lifting cargo elevator, which can be adjusted to increase or decrease the hydraulic oil flow rate of the oil cylinder. We can adjust the motor speed or the electro-hydraulic proportional valve to adjust the hydraulic oil flow rate; What factors will affect the lifting speed of hydraulic elevators? The longer the hydraulic oil pipe, the longer the lifting time. Therefore, during installation, the length of the oil pipe should be minimized as much as possible within the allowable range of the design; On the basis of adjusting the power unit, the size of the oil pipeline can also be adjusted, and corresponding adjustments can be made while ensuring that the equipment meets normal demand and safety.Botou,Every month, it should be ensured to add butter twice to the transmission position where the grease nipple is located. For areas where butter cannot be added, it is necessary to clear the oil circuit or replace the grease nipple until butter can be added. Otherwise, blow the valve core clean with compressed air, and then reinstall it.The daily maintenance of guide rail type cargo elevators should ensure that the transmission position where the grease nipple is located needs to be lubricated twice a month. For areas where grease cannot be added, it is necessary to clear the oil circuit or replace the grease nipple until butter can be added. Otherwise, it is prohibited to use the equipment.

The main categories of aluminum alloy elevators in the Chinese market are based on the structural form of aluminum alloy elevators. Aluminum alloy lifting platforms can be divided into the following types: single column aluminum alloy lifting platforms, which are lightweight and flexible in movement,The inconsistent rotation axis of the support rod in the middle of the hydraulic lifting platform results in the lifting platform being unable to function properly, causing serious damage to the platform and causing the table to tilt. Please carefully check that the general shear type high-altitude work platform was not strictly tested for tilt before leaving the factory, and was put into the market, causing many accidents. For small enterprises, they are not very concerned about this aspect of tilt detection This is also why there are such a large number of lifting equipment with this problem. The problems with the oil cylinder and power unit system are often due to insufficient power and substandard oil cylinder quality, which are also very important issues for enterprises themselves.Xiqing,The axle manufacturer's oil cylinder is leaking and the oil cylinder seal is being replaced. The lifting platform does not lower and the lowering valve is malfunctioning. When the lowering button is pressed, check if the lowering valve is energized. If there is no electricity, try to eliminate it; If there is electricity, troubleshoot the lowering valve itself or replace the lowering valve. The lowering valve should be kept clean.Are there any damages to the wires and cables of the department. We need to quickly bandage and replace the damaged department.Ohangaron,What are the common faults of hydraulic lifting platforms? The hydraulic lifting platform's oil cylinder is severely damaged, and uneven damage to the inner sealing ring or obstacles inside can easily cause uneven stress,XiqingHydraulic mobile lifting platform, resulting in uneven lifting height of the oil cylinder. It is recommended to carefully check whether the oil cylinder is normal.High altitude work is now also very common, and elevators are also highly demanded by the market. Many high-rise transportation tasks are completed by elevators, attention should also be paid to the installation of the elevator, otherwise there may be problems, and no one wants to see such a situation happen. What are the installation precautions for elevators?The pressure of the lifting platform is very important. When lifting goods, the pressure of the lifting platform will test the weight of the goods. If it is overloaded, the general lifting platform will prompt, which serves as protection. Therefore, now lifting platforms are equipped with pressure gauges. Hydraulic machinery should remind everyone to pay attention to the following points: the precautions for using small lifting platforms are based on pressure. Their load-bearing capacity is very poor and their size is small. When using the lifting platform, it is necessary to pay attention to its use. If overloaded, it will cause structural damage to the lifting platform. We have mentioned this many times before when using it.

In our daily life, hydraulic cargo elevators are increasingly widely used and loved by customers. As a lifting tool, the maintenance of hydraulic cargo elevators should not be careless. Below, the editor will introduce the daily maintenance of hydraulic cargo elevators.The indicator light is on, press the up button, the motor rotates but the lifting table does not rise. Check≥ Phase power supply, after the power supply is reversed, the motor reverses, and only needs to correct the power supply.The inconsistent rotation axis of the support rod in the middle of the hydraulic lifting platform results in the lifting platform being unable to function properly, causing serious damage to the platform and causing the table to tilt. Please carefully check that the general shear type high-altitude work platform was not strictly tested for tilt before leaving the factory,XiqingIndoor hydraulic lifting platform car, and was put into the market, causing many accidents. For small enterprises, they are not very concerned about this aspect of tilt detection, This is also why there are such a large number of lifting equipment with this problem. The problems with the oil cylinder and power unit system are often due to insufficient power and substandard oil cylinder quality, which are also very important issues for enterprises themselves.Design brand,Do not adjust the solenoid valve on the motor arbitrarily. The solenoid valve is pre adjusted before leaving the factory, and random adjustment can easily cause internal pressure to increase or decrease. In severe cases, it can shorten the service life of the motor.Aluminum alloy elevators, also known as aluminum alloy lifting platforms, currently have a wide variety in the Chinese market. They are highly favored by users due to their flexible movement, light weight, and small size.For the safety performance of high-altitude work platforms, it is necessary to have production technology, scientific processes and strict management to ensure production. When in use, people, the environment, and machines are the three major links of high-altitude operations, and safety is the basic condition to ensure the smooth progress of high-altitude operations. In the following text, Jiuyi briefly describes the precautions for using high-altitude operation platforms: high-altitude operators must hold a health certificate. Individuals with mental illness, hypertension, or mental illness are not allowed to engage in high-altitude work tasks. Staff are not allowed to engage in high-altitude work while drinking alcohol or feeling mentally drained.

Check, adjust and replace defective parts of the heavy operating rod mechanism; Clean the valve components; Check the cleanliness of the hydraulic oil valve core for clamping (manufacturing, installation issues, dirt issues)TrustworthyWhen using the distribution box, the selection of the leakage switch should be compatible with the frequency converter.When the lowering valve is open and the lowering button is released, use a voltmeter to check whether the lowering valve is energized. If there is no power, check the circuit and eliminate the fault; If there is electricity, eliminate the malfunction of the lowering valve itself. The slide valve of the lowering valve must be kept clean and move flexibly.Carefully prepare a special construction plan for installation and provide technical disclosure to the installation personnel. Our company has been engaged in various types of scissor lift manufacturers and other materials for years, and operates with integrity. Welcome to call!Xiqing,Signature recognition of.The daily maintenance of guide rail type lifting equipment should pay attention to regular inspection and maintenance, eliminate faults, and achieve these benefits for improving work efficiency, and ensuring the safety performance of the elevator.The power unit adjustment, is composed of the power unit and the oil cylinder. The power unit has four outlets during production, which can be adjusted to increase or decrease the hydraulic oil flow rate of the oil cylinder. We can adjust the motor speed or the electro-hydraulic proportional valve to adjust the hydraulic oil flow rate; What factors will affect the lifting speed of hydraulic elevators? The longer the hydraulic oil pipe, the longer the lifting time. Therefore, during installation,XiqingFixed electric hydraulic lifting platform, the length of the oil pipe should be minimized as much as possible within the allowable range of the design; On the basis of adjusting the power unit, the size of the oil pipeline can also be adjusted, and corresponding adjustments can be made while ensuring that the equipment meets normal demand and safety.

When using the distribution box, the electric leakage switch meets the requirements for construction elevators. If the fixed elevator installed is variable frequency, the selection of the leakage switch should be compatible with the frequency converter.Hydraulic boarding axle; Streamline” The open hinge joint design increases the welding area by more than three times compared to ordinary tubular joints, effectively extending the service life and simplifying maintenance.Sihu ,Before connecting the motor to the elevator, the elevator manufacturer should first make the motor shaft keyway perpendicular to the tightening bolt. To ensure uniform force, please first screw on the installation bolts at any diagonal position, but do not tighten them. Then,Sihu Hydraulic lifting platform, screw on the installation bolts at the other two diagonal positions and tighten the four installation bolts one by one. Afterwards, tighten the tightening bolts. All tightening bolts require torque wrenches to be fixed and inspected according to the indicated fixed torque data. Elevators and lifting platforms are widely used special equipment for high-altitude operations. Its scissor fork mechanical layout ensures high stability after the elevator is lifted, with a wide operating range and high load-bearing capacity, making high-altitude operations increasingly large-scale and supporting multiple people working together. It makes high-altitude operations more powerful and saferCheck the rollers, intermediate shafts, and bearings; Oil cylinder pin and bearing; Equality and wear of the hinge shaft and bearings of the boom; Add oil to the above components for maintenance of outdoor elevators and factory elevators. Extend the service life of bearings.Sukhothai,The hydraulic system of the hydraulic boarding bridge has stable performance, high quality, low maintenance rate, and have great applications in factories workshops, and other places. For this type of heavy machinery, its daily maintenance and upkeep are very important, because some small details can have a significant impact on the operation safety of the equipment if not paid attention to. Therefore, attention should be paid to the daily maintenance of cargo elevators.Unique design; Work; The steel frame can withstand average pressure, effectively reducing the torsion of the frame, and has stronger durability.

Maintain a smooth access road for external construction elevators and sufficient parking space for equipment. When using a crane for auxiliary installation, full consideration should be given to whether the on-site environment meets the operating conditions of the crane.Any machinery needs to be maintained after use, let alone large machinery. Poor maintenance of elevators after use can reduce the lifespan of elevators. Today, the editor will tell you how to maintain elevators after use. In order to maintain the good technical condition of elevator machinery, ensure the safe use of on-site construction machinery, extend the service life of equipment, and reduce mechanical failures, construction enterprises must maintain according to the relevant regulations According to maintenance regulations, necessary equipment maintenance work should be carried out. It is not allowed to focus solely on the use and maintenance of the equipment. It is strictly prohibited for equipment to be taken out of warranty or repair.When working at heights exceeding . meters, safety nets or safety belts must be used. Specializing in scissor lift manufacturers, old brand, with price advantages and guaranteed quality!Quality assurance,The size of the oil cylinder should be minimized as much as possible while meeting the design requirements. The smaller the size of the oil cylinder, the faster the lifting speed.The daily maintenance of guide rail type lifting equipment should pay attention to regular inspection and maintenance, eliminate faults, and achieve these benefits for improving work efficiency, extending equipment service life, and ensuring the safety performance of the elevator.Preparation before folding and installation of the elevator. Carefully prepare a special construction plan for installation and provide safety technical disclosure to the installation personnel.

Use a heavy crane to lift the cage and lift it from above the standard sectionquality index,Do not adjust the solenoid valve on the motor arbitrarily. The solenoid valve is pre adjusted before leaving the factory, it can shorten the service life of the motor.The reason for the price of aluminum alloy lifting platforms is that hydraulic pumps are also a factor affecting the flow of hydraulic oil. Using hydraulic pumps that have been used for too long can easily lead to problems. When the speed of the hydraulic elevator platform slows down,Sihu Customization of hydraulic lifting platform, it is necessary to check whether the oil supply flow rate of the hydraulic pump remains unchanged. If there is an invention problem, contact the manufacturer in real time to avoid exceeding the warranty period.There are problems with the hydraulic torque converter and compensation system of mobile elevators, such as weak torque converter, power shift failure, high oil temperature, insufficient hydraulic torque converter, inadequate pressure adjustment, insufficient back pressure. Check the quality of torque converter oil (whether hydraulic transmission oil is misused) dosage, torque converter pressure regulating valve, back pressure valve and their set pressure value. Power shift failure. Quick return valve, pressure reducing valve, power transmission valve The directional valve is stuck or leaking internally. Oil pollution is severe. Check the cause of the valve sticking and eliminate it accordingly. Filter or replace the hydraulic oil. If the oil temperature rises too much, check if there is any problem with the cooler. Check the quality of the hydraulic oil. The brand hydraulic boarding bridge, also known as the hydraulic loading and unloading platform, can achieve rapid loading and unloading of goods. The structure design is simple, the use is flexible and convenient, and the work efficiency is high. It is widely used and widely popularized in the market.Sihu ,When working at heights exceeding . meters, safety nets or safety belts must be used. Specializing in scissor lift manufacturers, old brand, with price advantages and guaranteed quality!Familiarity with the usage process and without a doubt, this is the first thing to understand. There are two ways to understand it: first, relevant users will be trained on the operating process and safety precautions of the hydraulic lifting platform, and some maintenance matters in the future will also be explained; What should be paid attention to during the running-in period when using hydraulic lifting platforms? Check the wear of components. For newly processed and assembled components, there may be subtle deviations in shape and size that require a period of time for running-in. Therefore, during the running-in period, it is necessary to pay attention to whether there is any rapid wear. If there is any the manufacturer of the hydraulic lifting platform should handle it in a timely manner to avoid equipment failure; Work between the pins and bearings to ensure that they are not worn, and add some engine oil or grease appropriately; Confirm if there is any noise during the running-in period. If it is found that the hydraulic lifting platform is noisy during operation, there is no need to worry in the early stage. If there are no major problems run it several times more. After the running-in, the noise will naturally disappear. However, if there is noise for a long time and no signs of fading, please make sure to promptly produce it and solve the problem; Regularly check if the components are loose. Before use, check if there are any signs of looseness in screws, nuts retaining rings, oil pipe joints, etc. If there are any, please reinforce or replace them in a timely manner to avoid accidents.What should I pay attention to when starting a new mobile elevator? High priced and various specifications of scissor lift manufacturers welcome scrap merchants, enterprises, and power departments to visit and negotiate with the company!

Use a heavy crane to lift the cage and lift it from above the standard sectionHigh altitude work is now also very common, and elevators are also highly demanded by the market. Many high-rise transportation tasks are completed by elevators, with high efficiency and reassuring safety. However, attention should also be paid to the installation of the elevator, otherwise there may be problems, and no one wants to see such a situation happen. What are the installation precautions for elevators?Busgow Freiburg,How do elevator manufacturers maintain and maintain construction elevators? In order to accurately implement the equipment maintenance system, it is necessary to establish a mechanical management responsibility system; It is necessary to develop maintenance procedures for different models; Corresponding maintenance institutions must be implemented; It is necessary to handle the relationship between maintenance and production, so as not to affect production or equipment maintenance.What are the common faults of hydraulic lifting platforms? The hydraulic lifting platform's oil cylinder is severely damaged, and uneven damage to the inner sealing ring or obstacles inside can easily cause uneven stress, resulting in uneven lifting height of the oil cylinder. It is recommended to carefully check whether the oil cylinder is normal.Saint-Claude,Novice operators: Due to their lack of understanding or lack of understanding of the operation methods of high-altitude work platforms such as mobile elevators, it is easy for them to make mistakes and cause equipment malfunctions. Operators in this area need to patiently learn and pass training before they can operate and use them.Check, adjust, and replace defective parts of the heavy operating rod mechanism; Clean the valve components; Check the cleanliness of the hydraulic oil valve core for clamping (manufacturing, installation issues, dirt issues)The equipment operation is very simple, just press the operation button, adjust the weight of the plate to fall, and the tongue plate can be used by placing it on the truck.

When working in a hot environment, pay attention to heat dissipation.The hydraulic lifting platform mainly uses hydraulic oil pressure transmission to achieve the lifting function. Its shear fork mechanical structure provides stability for the lift. The wide working platform and high bearing capacity make the high-altitude operation range wide and suitable for multiple people to work simultaneously. It makes high-altitude operations efficient and guaranteed.Staying below high-altitude work sites is prohibited, and safety nets or other protective devices should be installed below the work site to avoid injury from falling objects.installWhen working in a hot environment, pay attention to heat dissipation.Today, be sure to add more clothes when going out. Shandong, as the hometown of elevators in China. There are countless manufacturers of all sizes. So, how to maintain and maintain the lifting stage and elevator after entering winter. Below is a detailed introduction from the editor.Remove and disassemble the lowering valve, blow the valve core clean with compressed air, and then reinstall it.

Before using the machine, the staff should carefully inspect the hydraulic and electrical systems to ensure that there are no leaks or bare leaks before use.Promise and keep promise, and usable area of electric elevators efficiency, most high-rise buildings will divide electric elevators into arrays,Busgow FreiburgCylinder mounted hydraulic lifting platform, with each group responsible for a portion of the floors, and make different adjustments and scheduling based on the usage mode of different floors at different times.This series of products has a load capacity of . to . tons, and can also be customized according to user requirements,Busgow FreiburgProduction hydraulic lifting platform, with a load capacity of up to tons.Novice operators should pay attention to which equipment wears quickly when operating mobile elevators: Due to factors such as the processing and installation of high-altitude work platform equipment components such as mobile elevators, the equipment surface is rough, the area is small,Busgow Freiburg5 ton hydraulic lifting platform, and the load bearing is uneven, which can cause equipment wear. During the operation of high-altitude work platform equipment such as mobile elevators, the concave and convex parts on the surface of the parts are embedded and friction with each other, and metal debris undergoes secondary friction with the equipment, which will accelerate the wear and tear of the surface of the equipment parts. Therefore, mobile elevators and other high-altitude work platform equipment are prone to wear and tear of components during the running-in period, with a fast wear rate.Busgow Freiburg,Elevators are now very popular among people and can easily transport goods to high-rise buildings. Among them, hydraulic elevators are more popular among people, and people can choose the one that suits them according to their actual situation. However, during normal work it is important to pay attention to the lifting speed of hydraulic elevators and avoid making mistakes. So what factors will affect the lifting speed of hydraulic elevators?Guide rail type cargo elevators are a type of equipment for transporting heavy objects up and down, and have great applications in factories, workshops, and other places. For this type of heavy machinery, its daily maintenance and upkeep are very important, because some small details can have a significant impact on the operation safety of the equipment if not paid attention to. Therefore, if encountering an unsolvable problem with a hydraulic lifting platform, it is better to produce it quickly and conveniently, and guide the manufacturer to solve it. Please pay attention to safety precautions during maintenance.

Novice operators: Due to their lack of understanding or lack of understanding of the operation methods of high-altitude work platforms such as mobile elevators it is easy for them to make mistakes and cause equipment malfunctions. Operators in this area need to patiently learn and pass training before they can operate and use them.Each department's electric brush should be kept clean, and the brush pressure should be adjusted to ensure that its area is not less than %Gaobeidian,Everyone is familiar with elevators, especially guide rail elevators, which are used outdoors or indoors. It is inevitable that some small problems will occur after a long period of time. At this point, distribution box, etc. is usually kept clean, and dust on electrical equipment should be quickly swept away.Boldumsaz,What are the installation precautions for elevators? The folding fence and cage of the elevator should be cleaned of the foundation surface, and the foundation bolts should be installed properly. If the construction elevator is installed on the floor, a pad iron must be used below the screws to increase the force surface between the nuts and the floor to reduce the impact of the nuts on the floor; Insert steel plate shims of different thicknesses between the chassis and the foundation stone at the anchor bolts to adjust the verticality of the guide rail frame; Install three standard sections and measure the verticality of the guide rail frame using a theodolite to ensure the verticality of each main pipe in both directions. After adjusting the verticality of the guide rail frame, tighten the four foundation bolts; Adjust the verticality of the fence door frame as above and tighten the remaining anchor bolts; Install the buffer spring; Connect the other half of the fence to the front half with bolts; Adjust the verticality and tighten the anchor bolts as above, and release the brake on the motor inside the suspension cage. (For SC/ models, first install the suspension cage before installing the drive plate).The open adjustment plate base makes it more convenient to clean debris. Professional projects include: manufacturers of scissor lifts and other related businesses. Merchants who wish to engage in this business are welcomeDrain and discard the hydraulic oil from the hydraulic lifting cargo elevator. For the outdoor guide rail elevator, tighten the joint and remove the oil filter. After cleaning, clean it with compressed air, and then return it to the oil tank and connect the pipeline.

Remove and disassemble the lowering valve, blow the valve core clean with compressed air, with complete designated products and guaranteed qualityWhat are the installation precautions for elevators? The folding fence and cage of the elevator should be cleaned of the foundation surface, and the foundation bolts should be installed properly. If the construction elevator is installed on the floor,GaobeidianHydraulic straight top lifting platform, a pad iron must be used below the screws to increase the force surface between the nuts and the floor to reduce the impact of the nuts on the floor; Insert steel plate shims of different thicknesses between the chassis and the foundation stone at the anchor bolts to adjust the verticality of the guide rail frame; Install three standard sections and measure the verticality of the guide rail frame using a theodolite to ensure the verticality of each main pipe in both directions. After adjusting the verticality of the guide rail frame, tighten the four foundation bolts; Adjust the verticality of the fence door frame as above and tighten the remaining anchor bolts; Install the buffer spring; Connect the other half of the fence to the front half with bolts; Adjust the verticality and tighten the anchor bolts as above,Gaobeidian5 ton hydraulic lifting platform, and release the brake on the motor inside the suspension cage. (For SC/ models, first install the suspension cage before installing the drive plate).Fair price,When using, so never overload!Fault analysis of mobile elevators: Mobile elevators cannot lift or have weak lifting force: overflow valve pressure regulation does not meet the requirements: adjust the pressure to the required value; Oil cylinder internal leakage: check or exchange oil cylinder components; Clamping or internal leakage of directional valve: Check or exchange valve components; If the oil level is too low and the oil inlet filter is blocked and sleepers can be used when necessary.The principle of shouting loudly when someone is overloaded with moving things is the same, add enough oil and clean the filter. The fuel supply pump has drawbacks: check or exchange the pump.

Familiarity with the usage process and without a doubt, this is the first thing to understand. There are two ways to understand it: first, carefully read the user manual provided by the manufacturer when the hydraulic lifting platform leaves the factory; The second is the equipment that needs to be installed. A professional installation technician will be dispatched to install the hydraulic lifting platform. After the installation is completed, relevant users will be trained on the operating process and safety precautions of the hydraulic lifting platform, there may be subtle deviations in shape and size that require a period of time for running-in. Therefore, during the running-in period, it is necessary to pay attention to whether there is any rapid wear. If there is any, the manufacturer of the hydraulic lifting platform should handle it in a timely manner to avoid equipment failure; Work between the pins and bearings to ensure that they are not worn, and add some engine oil or grease appropriately; Confirm if there is any noise during the running-in period. If it is found that the hydraulic lifting platform is noisy during operation, there is no need to worry in the early stage. If there are no major problems, run it several times more. After the running-in, the noise will naturally disappear. However if there is noise for a long time and no signs of fading, please make sure to promptly produce it and solve the problem; Regularly check if the components are loose. Before use, check if there are any signs of looseness in screws, nuts, retaining rings, oil pipe joints, etc. If there are any, please reinforce or replace them in a timely manner to avoid accidents.Industry management,The product has a sturdy structure, a large load-bearing capacity, smooth lifting, and easy installation and maintenanceEmergency bolts not tightened; The solution is to tighten the emergency valve.Mobile elevators are generally used in skyscrapers where electric elevators are used, as there is no need to stop midway, so fast elevators are needed. First go to the high-rise sky lobby (high-rise elevator lobby, Skylobby) from the ground, and then transfer to the ordinary elevator to the destination. Some new elevators use elevator pre calling systems, which can pre call designated floors in the lobby. These passenger elevators can be decorated beautifully according to customer needs. Some passenger elevators are also equipped with air conditioning and television, while others are set up in the cabin, so that customers can enjoy the scenery outside while riding.Gaobeidian,Working at heights is a common practice nowadays, but it also has a certain degree of danger. So people invented hydraulic lifting platforms, which are more convenient to help people complete high-altitude operations. However, people should also pay attention when using hydraulic lifting platforms, otherwise they can easily malfunction which may lead to serious consequences. So what are the common faults of hydraulic lifting platforms?Guide rail type cargo elevators are a type of equipment for transporting heavy objects up and down, and have great applications in factories,GaobeidianVehicle mounted hydraulic lifting platform, workshops, and other places. For this type of heavy machinery, its daily maintenance and upkeep are very important, because some small details can have a significant impact on the operation safety of the equipment if not paid attention to. Therefore, attention should be paid to the daily maintenance of cargo elevators.Aluminum alloy elevators, also known as aluminum alloy lifting platforms, currently have a wide variety in the Chinese market. They are highly favored by users due to their flexible movement, light weight, and small size.

Operating cost advantage: Low failure rate. Due to the use of advanced hydraulic systems and good methods, the failure rate of elevator operation can be minimized. Low power consumption: When the hydraulic elevator descends, it is driven by the pressure generated by its own weight, which greatly saves energy.Novice operators should pay attention to which equipment wears quickly when operating mobile elevators: Due to factors such as the processing and installation of high-altitude work platform equipment components such as mobile elevators, the equipment surface is rough, the area is small, and the load bearing is uneven, which can cause equipment wear. During the operation of high-altitude work platform equipment such as mobile elevators, the concave and convex parts on the surface of the parts are embedded and friction with each other, and metal debris undergoes secondary friction with the equipment, which will accelerate the wear and tear of the surface of the equipment parts. Therefore, mobile elevators and other high-altitude work platform equipment are prone to wear and tear of components during the running-in period, with a fast wear rate.Busgow Freiburg,Busgow FreiburgMobile hydraulic lifting table supply,Check the one-way valve in the valve group for natural lowering of the lifting platform. If dirt is found on the sealing surface of a single valve, clean the one-way valve.High altitude work is now also very common, with high efficiency and reassuring safety. However, attention should also be paid to the installation of the elevator, otherwise there may be problems, and no one wants to see such a situation happen. What are the installation precautions for elevators?Kegayli,Check the hydraulic oil quality and level. When the lifting platform is raised to a high position, the hydraulic oil level should be - millimeters higher than the bottom of the oil tank. When the color of the hydraulic oil darkens, the oil becomes sticky, or there are foreign objects such as gravel in the oil, the hydraulic oil should be replaced in a timely manner. The hydraulic system of the lifting platform should be checked for hydraulic and pipeline connections. If the pipeline is damaged, it should be replaced immediately; When there is looseness in the connection part, tighten the pipe joint.When conducting high-altitude operations on dangerous edges such as roofs, suspension bridges slopes, or cliffs, guardrails or safety nets should be installed on the side facing the air, or safety belts or ropes should be used.When working in a hot environment, pay attention to heat dissipation.

The load capacity of goods and the tonnage of goods transported at once also affect the speed of lifting and lowering. Achieving the excellent value of the lifting platform for transporting goods is a guarantee of speed. If the weight is too heavy, it affects the speed. If the goods are too light,Busgow Freiburgfork lifter,Busgow FreiburgHydraulic small lifting platform, it also affects the normal transportation time.How do elevator manufacturers maintain and maintain construction elevators? In order to accurately implement the equipment maintenance system, it is necessary to establish a mechanical management responsibility system; It is necessary to develop maintenance procedures for different models; Corresponding maintenance institutions must be implemented; It is necessary to handle the relationship between maintenance and production, so as not to affect production or equipment maintenance.In our daily life, hydraulic cargo elevators are increasingly widely used and loved by customers. As a lifting tool, the maintenance of hydraulic cargo elevators should not be careless. Below, the editor will introduce the daily maintenance of hydraulic cargo elevators.The cost is reasonable,After entering winter, elevators are prone to some small problems and malfunctions, which requires users to perform seasonal maintenance and upkeep on the elevator. Below, the same goes for them. Of course, during the internship, there may still be some questions about the elevator, but without contact, simply mastering some specific skills can effectively handle these questions.Avoid, especially during storage. Store in a cool and dry place, and avoid rainy and snowy weather during work.

Any product always has a break-in period when it is first used, so what precautions should we pay attention to during the break-in period when using a hydraulic lifting platform? Today, the editor will share this topic with everyone.Process inspection,No matter what problem occurs, if encountering an unsolvable problem with a hydraulic lifting platform, it is better to produce it quickly and conveniently, and guide the manufacturer to solve it. Please pay attention to safety precautions during maintenance.In addition it is strictly prohibited to use hammers or other tools during installation to prevent excessive axial or radial force from damaging bearings or gears. Be sure to tighten the installation bolts before tightening the tension bolts. Before installation, clean the anti rust oil on the motor input shaft, positioning boss, and elevator connection parts with gasoline or zinc sodium water. Its purpose is to ensure the tightness of the connection and the flexibility of operation, and to prevent unnecessary wear and tear.With the increasing demand for boarding bridges, mobile boarding bridge merchants are increasingly interested in using boarding bridges to provide customers with the appearance of hydraulic boarding bridges, and the demand for boarding bridges is also increasing. However, there are not many manufacturers of corresponding boarding bridges. Many boarding bridge companies are leather bag companies, and they do not produce them themselves resulting in high prices. What is important is that they do not have a good understanding of the technology of car booths, and there are often deviations when passing on the technical requirements of direct customers to the manufacturers. Therefore, customers who purchase boarding bridges can directly find professional manufacturers. When choosing a boarding bridge, the first thing to consider is the range of use, frequency of work, rated weight, and other factors of the product, and choose a boarding bridge that is suitable for the requirements of the unit. Conduct market research based on the proposed technical parameters. The first condition for selecting a supplier is to consider the manufacturer of the boarding axle, and then the after-sales service capability. As long as it is a fixed boarding bridge with good product quality, and complete equipment, it can be chosen at a reasonable price.Busgow Freiburg,Novice operators: Due to their lack of understanding or lack of understanding of the operation methods of high-altitude work platforms such as mobile elevators, it is easy for them to make mistakes and cause equipment malfunctions. Operators in this area need to patiently learn and pass training before they can operate and use them.Aluminum alloy elevators also known as aluminum alloy lifting platforms, currently have a wide variety in the Chinese market. They are highly favored by users due to their flexible movement, light weight, and small size.Firstly, and any violations of elevator operation should be detected