Method for preventing brake system banding and brake system

CN117068913BActive Publication Date: 2026-06-19HITACHI ELEVATOR GUANGZHOU ESCALATOR +1
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HITACHI ELEVATOR GUANGZHOU ESCALATOR
Filing Date
2023-09-15
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

When the braking system of escalators and moving walkways is in operation with the brakes on, the brake pads may make slight contact with the brake disc due to a broken cantilever bolt of the electromagnetic brake or a failure of the brake controller. This may fail to effectively stop the drive unit, producing thick smoke with an irritating odor and causing panic among passengers.

Method used

By adjusting the distance between the push rod of the electromagnetic brake and the transmission adjusting bolt, the bolt is loosened and then pulled back in the opposite direction to trigger the adjusting bolt, so that it is spaced at a specific distance from the limit switch. This ensures that the limit switch correctly switches signals under different braking conditions and prevents operation with the brake engaged.

Benefits of technology

It effectively prevents the braking system from operating with the brakes engaged, avoids the generation of odors and smoke from friction between the brake pads and brake discs, and improves the reliability of the braking system and the passenger experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117068913B_ABST
    Figure CN117068913B_ABST
Patent Text Reader

Abstract

This invention provides a method and system for preventing brake system operation with the brake engaged, comprising the following steps: adjusting the distance between the push rod of the electromagnetic brake and the transmission adjusting bolt to a first preset distance; opening the electromagnetic brake to release the braking engagement between the brake arm and the brake disc; loosening the trigger adjusting bolt on the brake arm and adjusting it to a position that switches the signal of the limit switch on the brake disc; reversing the trigger adjusting bolt to a second preset distance between the trigger adjusting bolt and the limit switch; and tightening the trigger adjusting bolt. This application can quickly determine the operating status of the electromagnetic brake and the signal switching of the limit switch, thereby preventing brake system operation with the brake engaged. This ensures that during the braking system's open-circuit operation, the brake pads on the brake arm will not rub against the brake disc, preventing the generation of odor and smoke, thus improving the user experience of the braking system.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Brake shoe of brake

    CN212536492U

  • Helical Gear Reduction drive unit of the escalator

    KR101623519B1