Elevator hoisting machine brake device

By combining the main and auxiliary brake shoes with the braking mechanism and the limit mechanism, the problem of stopping the elevator traction machine under full load descent and sudden drop is solved, achieving stable stopping and buffering effect, and improving safety and comfort.

CN122126720APending Publication Date: 2026-06-02LI YANG ELEVATOR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LI YANG ELEVATOR ENG CO LTD
Filing Date
2026-04-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing elevator traction mechanism braking devices are difficult to achieve buffering and rapid stopping under full load. In particular, they are prone to large vibrations when descending to a stop, and are unable to effectively buffer and stop during sudden falls, which may cause injury to passengers.

Method used

The elevator employs a combined braking mechanism consisting of a main brake shoe and an auxiliary brake shoe. The main brake shoe performs initial static braking, while the auxiliary brake shoe slides along an arc-shaped track to apply pressure braking. Combined with a limit mechanism, this achieves short-distance deceleration buffering and rapid braking, ensuring that the elevator stops stably during a fall.

Benefits of technology

It achieves stable braking of the elevator during full-load descent and sudden drop, reduces vibration, improves safety and passenger comfort, and extends the service life of braking components.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN122126720A_ABST
    Figure CN122126720A_ABST
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Abstract

This invention discloses an elevator traction mechanism braking device, relating to the field of traction mechanism braking technology. It includes a base, with a brake disc and traction sheave disposed on the front side of the base, and a mounting seat abutting the top of the base. A brake arm rotates on the front side of the base via symmetrical pivots. This elevator traction mechanism braking device, through the main brake shoes driven by the brake arm and the auxiliary brake shoes driven by the slide block, can perform three-point braking of the brake disc. When a fully loaded elevator car descends to a stop or experiences a fall, the two main brake shoes perform two-point static braking deceleration of the brake disc. Then, the auxiliary brake shoes of the braking mechanism move along an arc-shaped slide, causing the auxiliary brake shoes to perform small-amplitude sliding pressure-increasing braking of the brake disc. Finally, a limiting mechanism further enhances the pressure braking of the braking mechanism, achieving short-distance deceleration buffering and rapid stopping after buffering, ensuring that the elevator car can achieve a stable stop through the traction mechanism braking device when a fall occurs.
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