A monitoring system for hoist disc brake

Abstract

The invention discloses a monitoring system for a disc brake of a hoist, which relates to the field of hoists. The magnetostrictive sensor is installed on the brake shoe to measure the braking gap, the photoelectric encoder is installed on the shaft end of the drum to monitor the rotation state of the drum, the strain gauge is installed on the brake shoe push rod to measure the positive pressure of the brake, the detection unit is used in conjunction with the PLC Realize self-adaptive feedback adjustment, use servo motor and ball screw pair to push the brake shoe, which can realize fast response, online adjustment of braking torque, and adaptive adjustment of braking distance. Install one brake shoe in the horizontal direction and one in the vertical direction. The vibration sensor is used to detect the vibration state in the horizontal and vertical directions respectively. It can accurately measure the vibration of the brake during the working process, ensure the safe operation of the braking system, and timely repair and alarm the existing hidden dangers. The failure rate of the brake is reduced, and the reliable braking and stable operation of the mine hoist are 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

Images