Portable uplink overspeed protection tester for permanent magnet synchronous tractor elevator

Abstract

A portable uplink overspeed protection tester for a permanent magnet synchronous tractor elevator comprises a safety transformer with a tap. A primary coil of the transformer is connected with an electric supply 220 VAC power source. The number of secondary coils of the transformer is three, the first secondary coil outputs the 220 VAC voltage, the second secondary coil outputs the 110 VAC voltage, and the third secondary coil outputs the 24 VAC voltage. The portable uplink overspeed protection tester can be placed in a tool box, and field inspecting and carrying are convenient. Operation is easy, the tester only has one path of mains input, two paths of output and two signal lines, a bolt mode is adopted in power input line connection, a line clip mode is adopted in connection of all output lines and the signal lines, and during using, line connecting is easy and quick. An operation panel only has one main power switch, one starting / stopping button and the like, and operation is easy.

Description

technical field [0001] The patent of this invention is mainly to develop a portable uplink overspeed protection tester for permanent magnet synchronous traction machine elevators, so that elevator inspectors can conveniently check the reliability of the uplink overspeed protection device using permanent magnet synchronous traction machine elevators on site. , Scientific testing. Background technique [0002] The elevator upward overspeed protection device is installed on the traction drive elevator. When the elevator upward overspeed reaches a certain level, it stops the car or at least reduces its speed to the design range of the counterweight buffer. It generally consists of two parts: speed monitoring and braking or causing deceleration. Usually a two-way speed limiter is used as the car speed monitoring device. The braking or deceleration device is divided into safety gear, rope clamp, safety brake, etc., which act on the car or counterweight, wire rope suspension devic...

AI Technical Summary

Problems solved by technology

[0009] 2. Because there is no uniform inspection method, the inspection methods provided by many elevator manufacturers have problems, and it is impossible to correctly test the upward overspeed protection device of the elevator car

[0010] 3. When the elevator inspection unit conducts the reliability test of the upward overspeed protection of the elevator, it is unscientific to use this inspection method, and the human factors are relatively large.

There are many human factors in this test method. It is difficult to synchronize the action of the manual brake release and the speed limiter's upward overspeed protection electrical switch. The test method is inaccurate and unscientific.

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