The invention discloses a method and a device for triggering safety tongs of an elevator for a test, and relates to the technical field of elevator tests. The method comprises the steps of adjusting a tension adjusting mechanism to enable tension of a steel wire rope to be larger than lifting force of safety tongs; according to test requirements, theoretical operation displacement of the elevator car in the test process is determined; according to the theoretical operation displacement, a preset position is determined, and the trigger piece is fixed to the preset position of the steel wire rope; during the test, the elevator car is made to operate in a downward acceleration mode, and when the speed of the elevator car reaches a preset speed, a brake power source of an elevator traction machine is cut off, and the elevator car is braked; and if braking fails, and the elevator car continues to descend till the sliding rope sleeve makes contact with the triggering piece, the triggering piece provides upward acting force for the sliding rope sleeve, the safety tongs are triggered to act, and the elevator car is braked. According to the method for triggering the elevator safety tongs for the test, the test can be reliably triggered or the safety tongs can be protected without using a speed limiter.
本发明公开了一种试验用电梯安全钳触发方法和装置,涉及电梯试验技术领域。该方法包括:调节张力调整机构,使钢丝绳的张力大于安全钳的提拉力;根据试验需求,确定电梯轿厢在试验过程中的理论运行位移;根据理论运行位移,确定预设位置,并将触发件固定于钢丝绳的预设位置;在试验时,使电梯轿厢向下加速运行,当电梯轿厢的速度达到预设速度时,断开电梯曳引机制动电源,制停电梯轿厢;若制停失败,且电梯轿厢继续下行至滑行绳套接触触发件,则触发件提供给滑行绳套向上的作用力,触发安全钳动作,制停电梯轿厢。根据本发明实施例的试验用电梯安全钳触发方法,无需使用限速器,便能够可靠触发测试或保护安全钳。
Triggering method and device of elevator safety tongs for test
试验用电梯安全钳触发方法和装置
2024-03-08
Patent
Electronic Resource
Chinese
IPC: | B66B Aufzüge , ELEVATORS |
Auxiliary triggering device of pit-free home elevator safety tongs
European Patent Office | 2021
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