Upward travel protector for lift

Abstract

The upward travel protector for lift includes a clamping mechanism, a triggering mechanism and a resetting mechanism, and is held inside one box hinged to the pedestal. The power spring drives one end of the cam body to generate rotation moment, and cam surface presses the braking board to realize braking; the motion of the eccentric wheel and the rod generates reverse rotation torque to make the protector release; and the triggering force is reduced with the lever and the control board in special structure. The present invention can brake lift in case of accident overspeed during upward traveling. The present invention operates mechanically and has safe and reliable braking, greatly reduced triggering force, timely and accurate triggering, and compact structure. The present invention is also suitable for the braking of other system with steel cable.

Description

technical field

[0001] The invention relates to an elevator upward protection device, in particular to an elevator upward protection device which utilizes a cam and combined with lever action to brake. Background technique

[0002] In general, an elevator is a device for carrying passengers and goods in a high-rise building, and it is connected with a traction rope using a driving motor to perform lifting. As the safety protection device of the elevator, the elevator brake and the upward protection device are directly related to the performance of the elevator and the safety of passengers' lives and property.

[0003] With the development of the elevator industry, countries around the world have higher and higher requirements for elevator operation safety. In the 1998 edition of the standard EN81-1 "Safety Code for Elevator Manufacturing and Installation" formulated by CEN, Article 9.10 has clearly stipulated that traction The driven elevator should be equipped with an upwa...

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