Portable tester for braking torque of elevator brake in use

Abstract

The invention provides a portable tester for braking torque of an elevator brake in use. The tester can quantitatively and accurately inspect the braking torque of a static elevator in use and provide a reliable basis for comprehensive inspection of the elevator. The tester comprises a tuning gear and a control system, wherein the turning gear comprises a turning hand wheel and multiple different specifications of detachable small wheels coaxial with the turning hand wheel; the small wheels are in multiple relation with the radius of the turning hand wheel, and a torque sensor and a touch display are mounted on the turning hand wheel; the control system comprises an input/output system and a computer chip control system. The tester is portable, field measurement by elevator inspectors is facilitated, the measuring process is convenient and quick, measured data are scientific and accurate, no damage is caused to the tested elevator, and the safety is high.

Description

technical field [0001] The invention belongs to an elevator safety inspection tester, in particular to a portable in-use elevator brake brake torque tester. Background technique [0002] The elevator brake device is installed on the traction-driven elevator to maintain the position of the elevator car when the elevator is leveling and stop, and to stop the movement of the elevator car when the elevator runs out of control. It plays a very important role in the safe operation of the elevator. However, due to the long-term operation of the elevator and insufficient maintenance, such as loose screws in the elevator brake, wear of the brake lining, and oil stains on the brake wheel, the braking torque is reduced, and the elevator car moves abnormally, causing casualties to elevator passengers. ACCIDENT. In recent years, due to the insufficient braking torque of the elevator brake, the elevator car slipping and hurting people is one of the main reasons for elevator accidents. ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of this method are: firstly, it tests the dynamic braking capacity of the elevator brake, and most elevator accidents are caused by the abnormal movement of the car due to insufficient static braking torque of the brake when the elevator is in the state of opening and parking on the leveling floor. Elevator injury accident; secondly, it is difficult to accurately measure the braking distance and braking deceleration of the car by this method in actual inspection; thirdly, the wear of the brake lining caused by emergency braking has certain damage to the brake

However, in the detection of the braking torque of the brake of the elevator in use, due to the influence of factors such as the weight of the car and the counterweight, the weight of the traction wire rope, the weight of the compensation chain, and the different positions of the car, the calculation becomes more complicated. It is complex and the mathematical model is difficult to establish, so there is no special instrument for detecting the braking torque of the elevator brake in use.

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