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Inspection items of electrical system of elevator

Date:2021-01-07Visits:204

  Elevators are widely used and rarely subject to environmental constraints. Whether in dusty construction sites or in luxury and comfortable hotels, elevators are good assistants for working at height. How can elevators prevent heatstroke in hot summer? Oil leakage caused by oil pipe rupture is mainly caused by heat expansion and cold contraction, which makes elevators unable to operate normally, The solution is: replace the cracked or leaking oil pipe in time, if there is oil leakage in the operation, turn off the power supply before maintenance. The high temperature makes the elevator box short circuit, because the temperature is too high, the circuit system in the electric box can not be good heat dissipation, so that the electrical components are damaged. The solution is: in the hot weather with the temperature higher than 32 degrees, when using the elevator for about 2-3 hours, the operation should be carried out at an interval of about 10-30 minutes.

  In order to prevent tire burst, the elevator tire is mainly pneumatic tire. If the tire burst occurs in hot weather, it is easy to cause dangerous accidents. Therefore, in view of this safety hazard, the main solutions are as follows: check whether the tire pressure is standard before use; replace the tire with cracks or air leakage in time; Try to make the elevator operate on the flat ground, and clean the sharp instruments or sundries on the ground in time to prevent careless rolling in the operation; the fixed elevator platform should avoid long-term exposure to the sun, and sunshade net or other articles can be used to cover the tires if possible. When using the lift, if the pressure of the hydraulic pump is insufficient, it will affect the work of the lift. The elevator adopts high-strength manganese steel structure, with wide working table and high bearing capacity. It can be operated by many people at the same time, making the high-altitude operation safer and more efficient. It is suitable for municipal construction and maintenance, street lighting, highway facilities maintenance, engineering repair, garden pruning, gas station maintenance, etc. if explosion-proof equipment can be installed in special occasions.

  The main reasons for insufficient pressure of guide rail elevator are: the safety valve is stuck or worn or the adjustment value is too low. The joint is loose or the seal is not tight, resulting in leakage. If the pressure gauge fails, the pressure response will be distorted. Solutions are summarized as follows: check the cone valve or valve body, replace or repair. Fasten the joint or replace the seal. Check the pressure gauge and repair the pressure gauge base. Electrical system is an important operation and execution system when the elevator works. In case of equipment failure, all systems should be checked. Aluminum alloy elevator should avoid normal use. What are the precautions in the electrical system inspection? First of all, the resistance to ground of the electric machine and electrical components measured with a 500V megger should not be less than 1m Ω. Secondly, the grounding resistance of the steel structure of the elevator and the metal shell of the electrical equipment measured by the grounding resistance tester shall not be greater than 4 Ω. Third: check the motor limit, the movement direction of the cage and the guide rail type hydraulic hoist should be consistent with the direction shown in the operation box; ordinary construction elevator boom installation: the boom should be installed in the top of the elevator cage, the boom installation hole, in the cage, the centripetal bearing should be installed in the cage, the pressure pad should be installed and fixed with bolts. Fourth: check the control switches installed on the lifting platform, open the doors on the cage respectively, touch the rope breaking protection switch, upper and lower limit switches, * limit switches, etc. should be able to work. *After: the inspection of the electrical system should be safe and important, the mobile lifting platform after simple detection, if the fault has not been found, it should be reported to the manufacturer in time, remember that non industry personnel can not dismantle and debug without authorization, so as to timely remove the fault of the guide rail elevator.


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