Mine hoist constantly-decelerating safe braking system with double working points

Abstract

The invention discloses a mine hoist constantly-decelerating safe braking system with double working points, which is designed for further improving the braking performance and the application range of a braking system. The braking system comprises a braking function actuator element, a hydraulic station, a constantly-decelerating closed loop electrical control device and a detection feedback device, as well as a main electric control device which can indentify working situation of lifting or descending of an object according to characteristic parameters of a hoisting system, and can send corresponding command signals to the constantly-decelerating closed loop electrical control device, the electrical control device is provided with double sets of constantly-decelerating closed loop braking control loops, each set of control loop comprises a constantly-decelerating control plate which has a preset corresponding constantly-decelerating working point, the electric control device can control programs by a PLC (programmable logic controller), a working situation selecting control command can carry out selection on the control loops and the constantly-decelerating control plates of theworking situations of lifting and descending, and after receiving safe braking commands sent by the hoisting system, the braking system implements safe braking according to a pre-selected constantly-decelerating working point.

Description

[0001] technical field [0002] The invention relates to the technical field of safety braking control of a mine hoist, in particular to a dual-working-point constant deceleration safety braking system of a mine hoist. Background technique [0003] The mine hoist is the throat equipment of mine mining, which undertakes the important task of transporting minerals, equipment, materials and personnel between the mine and the mine. Its performance is very important for mine safety production. The electro-hydraulic braking system of mine hoist is a key component related to the safety performance of the hoist. [0004] Safety braking refers to the braking behavior of stopping quickly in order to avoid safety accidents during the operation of the hoist or hoisting winch. The safe braking process is mainly completed by the electro-hydraulic braking system, which is composed of disc brakes, hydraulic stations, electric control cabinets, detection and feedback devices, hydraulic pi...

AI Technical Summary

Problems solved by technology

In this way, the safety braking deceleration under the lifting working condition is relatively small. Although it still meets the requirements of safety regulations and can meet the requirements of use, the braking distance is long, which is not the most ideal braking state.

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