Device for amplifying action stroke of armature of elevator brake and elevator provided with device

Abstract

The invention relates to a device for amplifying the action stroke of an armature of an elevator brake and an elevator provided with the device. The device for amplifying the action stroke of the armature of the elevator brake comprises: an electromagnet device comprising an armature and an iron core; a microswitch capable of being used for connecting and disconnecting a circuit to generate a control signal; a lever capable of being in contact with the contact of the microswitch, so that the microswitch switches on or switches off the circuit; a pivot shaft; and an actuating lever mounted to the armature and held in contact with the lever, wherein the microswitch, the lever, and the pivot shaft are mounted on the iron core side, the actuating lever pushes the lever when the electromagnet device is energized to cause the lever to pivot about the pivot shaft so as to contact with the contact of the microswitch to connect or disconnect the circuit, and the length from the contact position of the actuating rod of the lever and the lever to the center of the pivot shaft is smaller than the length from the contact position of the contact of the microswitch of the lever and the lever to the center of the pivot shaft.

Description

technical field [0001] The invention relates to a device for amplifying the action stroke of an elevator brake armature and an elevator provided with the device. The device for amplifying the action stroke of an elevator brake armature can effectively amplify the stroke of the brake armature. Background technique [0002] As an important safety component of the elevator, the brake is the basic device to ensure the safe operation of the elevator. When the elevator is not working, the brake brakes, relying on the braking force to keep the brake wheel stationary; when the elevator is running, the brake is released, relying on electromagnetic force to overcome the braking force of the brake, so that the brake wheel can rotate freely. [0003] Generally, the brake includes an electromagnet device with an iron core, an armature, and a micro switch, etc. The braking and release status of the brake is achieved through the closing and opening of the contacts of the micro switch on th...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a device for amplifying the action stroke of the elevator brake armature, which can solve the problems in the above-mentioned related technologies, effectively amplify the brake armature stroke, reduce the failure rate of the micro switch, and solve the problem of spring fatigue and wear. And other problems, so that the structure of the elevator brake is reliable, and the service life is longer, so as to ensure the safe and stable operation of the elevator

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