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

Abstract

A mine hoist double working point constant deceleration safety braking system disclosed in the present invention is designed to further improve the braking performance and application range of the braking system, including: braking function actuators, hydraulic stations, constant deceleration Closed-loop electrical control device and detection feedback device; it also includes the main electronic control system, which identifies the lifting or lowering working conditions of heavy objects according to the characteristic parameters of the lifting system and sends corresponding command signals to the constant deceleration closed-loop electrical control device; the electrical control device There are two sets of constant deceleration closed-loop braking control loops, each set of control loops has its own constant deceleration control board, and each control board presets the corresponding constant deceleration working point; the electrical control device is controlled by PLC. The selection control command of the lifting and lowering working conditions and the selection of the constant deceleration control board; after the braking system receives the safety braking command issued by the lifting system, it will follow the pre-selected constant deceleration working point Apply safety brakes.

Description

technical field [0001] 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 [0002] 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. [0003] 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 pipelines and...

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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