Safety brake and redundancy control system of mine hoist

Abstract

The invention relates to a safety brake and redundancy control system of a mine hoist. Detection signals of a roller rotation speed sensor and a motor rotation speed sensor are input into a speed redundancy detector, the processed detection signals are input into a speed signal comparer, compared with a command signal, and then input into a speed closed-loop controller, the speed closed-loop controller transmits the signals to a pressure signal comparer and a pressure feed-forward controller, the pressure signal comparer compares a signal of a pressure sensor and an output signal of the speed closed-loop controller, a comparison result is input into the pressure speed closed-loop controller, and a signal of the speed closed-loop controller is input into an adder through a switch to form a control signal of a tee proportional depressurization valve; and when the pressure sensor is cut off, the output signal of the speed closed-loop controller is input into the adder after being processed by the pressure feed-forward controller, and an output signal of the adder controls the tee proportional depressurization valve, so that the braking torque is controlled. The safety brake and redundancy control system is high in control precision and response speed, and the mine hoist can brake at constant retarded velocity.

Description

technical field [0001] The invention belongs to mining equipment, in particular to a mine hoist safety brake and redundant control system. Background technique [0002] Mine hoist is an important lifting equipment for mine production. It is responsible for important tasks such as lifting workers, lifting minerals or equipment, and lowering materials and equipment. It is one of the "four major pieces" of mining machinery and has the reputation of "mine throat". . [0003] The braking system of the mine hoist is the last guarantee for the safe operation of the hoisting system. The quality of the braking performance is directly related to the efficiency of mine production, the personal safety of workers and the safety of public property. [0004] The disc brake system has the advantages of good safety performance, adjustable braking torque, high sensitivity, compact structure, light weight, small inertia, convenient installation and maintenance, etc., and is widely us...

AI Technical Summary

Problems solved by technology

[0009] In the prior art, the hydraulic power source of the hydraulic brake, no matter whether the fixed pump or the variable pump is used, the motor is in a long-term running state, which will generate a large idling energy consumption and cause the system to heat up, which also needs to be improved

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