A control method and system for a forced drive elevator

Abstract

A control method for a forced-drive elevator, comprising: monitoring the action of a speed limiter, judging whether there is a malfunction of the speed limiter, and outputting a control signal when it is judged that the speed limiter is malfunctioning, so as to prevent the execution of the misoperation of the elevator system, Wherein, the misoperation is caused by the misoperation of the speed limiter, and the operation of the elevator is controlled according to the preset logic. By monitoring the action of the speed limiter, the information of the misoperation of the speed limiter is obtained in real time, and when the speed limiter malfunctions, the output control signal prevents the execution of the misoperation, avoiding the malfunction of the speed limiter and stopping the elevator. The impact on the elevator impact caused by stopping the elevator is reduced, and the user experience is improved.

Description

technical field [0001] The invention relates to the field of elevator control, in particular to a control method and system for a forced drive elevator. Background technique [0002] In recent years, with the development of China's economy, elevators have been widely used. Elevators are vertical elevators powered by electric motors, equipped with box-like gondolas, and used for multi-storey buildings to take people or carry goods. The driving methods of the elevator include traction type and forced drive type. The traction type elevator is mainly composed of traction machine (winch), guide rail, counterweight device, safety device (such as speed limiter, safety gear and buffer, etc.), signal control System, car and hall door, etc. These parts are respectively installed in the hoistway and machine room of the building. Steel wire rope friction transmission is usually used. The wire rope goes around the traction sheave, and the two ends are respectively connected to the car a...

AI Technical Summary

Problems solved by technology

However, due to the structure of the strong drive villa elevator without retesting, the elevator system stops outputting, and the system brake has a certain delay time. If the brake coil is de-energized, the elevator will continue to fall, and the locking action takes about 300ms. In the section, the car falls freely with an acceleration of about 9.8m / s 2 , the maximum speed before locking Vmax=gt=9.8*0.3=2.94m / s, the rated speed of villa elevators is usually 0.5m / s, far exceeding 115% of the rated elevator speed, when the elevator goes down, the elevator running speed is slower High, the high speed of the elevator may easily lead to malfunction of the speed limiter, so that the speed limiter will act during the normal operation process that should not cause the action of the speed limiter or should not cause the action of the speed limiter. The action of the speed limiter is safe. When the caliper brakes, the elevator will bear a large impact force, and in severe cases, some structural parts will be deformed and scrapped

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