Monitoring system for disc brake of elevator

Abstract

The invention discloses a monitoring system for a disc brake of an elevator, and relates to the field of elevators. A magnetostriction sensor is installed on a shoe to measure a brake gap, a photoelectric encoder is installed at the shaft end of a roller to monitor the rotating state of the roller, a strain gauge is installed on a shoe push rod to measure the brake positive pressure, a detection unit and a PLC are used cooperatively to achieve self-adaptive feedback adjustment, a servo motor cooperates with a ball screw pair to push the brake shoe, rapid response, on-line brake torque adjustment and self-adaptive brake spacing adjustment can be achieved, vibration sensors are installed in the horizontal direction and the vertical direction of the shoe respectively and are used for detecting the vibration states in the horizontal direction and the vertical direction respectively, the vibration condition of the brake in the working process can be accurately measured, safe operation of abrake system is guaranteed, potential safety hazards are repaired and alarmed timely, the failure rate of the brake is substantially reduced, and reliable braking and stable operation of a mine hoistare guaranteed.

Description

technical field [0001] The invention relates to the field of hoists, in particular to a monitoring system for disc brakes of hoists. Background technique [0002] Mine hoisting equipment is a large-scale mechanical equipment that lifts and lowers personnel, lifts and lowers materials, and is a key hub that connects the underground production system of the mine with the ground work square. With the continuous expansion of the production scale of coal mines, coal mining pays more and more attention to the safety performance and automation of equipment. The mine hoist, which is responsible for important tasks such as lifting objects and people, must have sufficient braking torque, that is, it is required to brake The torque should neither be too large nor too small. If it is too large, it will cause the hoist to decelerate sharply, and mechanical accidents such as slipping ropes and broken ropes will easily occur. The braking system is an important link in coal mine production...

AI Technical Summary

Problems solved by technology

Affected by factors such as disc brake friction lining wear and other factors, when the gap between the disc brake and the brake disc needs to be adjusted, the traditional brake can only be done manually, and the braking positive pressure of the disc brake It is also fixed and cannot be adjusted. When the brake deceleration of the hoist cannot meet the requirements, the use of two-stage brakes has great limitations. Therefore, the traditional disc brakes require high manufacturing precision and strict sealing requirements, and a set of brakes must be installed. Oil pressure system, at the same time, it is difficult to guarantee the disc spring load deviation, and the later maintenance is more cumbersome

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