An isolation protection device and control system based on hydromechanical transmission

Abstract

The present invention is a hydraulic-mechanical transmission isolation protection device and a control system. The transmission isolation protection device comprises a valve block and a valve body which are sealed and connected to each other. The valve body is provided with a movable half shaft sealed therewith. There is a spring between the top of the cavity, a communication channel is arranged between the side wall and the bottom of the movable half shaft, the side wall of the upper valve body is provided with a QK1 port for control, and the QK1 port is communicated with the channel of the movable half shaft. There is a valve core fixed under the shaft, the lower valve body is set in the valve block, the lower valve body is provided with a channel suitable for the valve core, the side of the lower valve body is provided with a number of small holes, the GLFA1 port on the side of the valve block, the valve There is a GLFP1 port at the bottom of the block. Only when the parking brake valve is opened, after the parking brake is released, the GLFP1 port is connected with the GLFA1 port, and the vehicle can run normally in the operating gear, so as to prevent misoperation when the vehicle is not ready to drive when the parking brake valve is faulty. Gears make the vehicle run and cause a safety hazard.

Description

technical field [0001] The invention relates to a transmission control system of a trackless auxiliary explosion-proof vehicle in a coal mine, in particular to a hydraulic-mechanical transmission isolation protection device and a control system. Background technique [0002] Due to the characteristics of high efficiency, multi-purpose, flexible mobility and advanced technology, explosion-proof vehicles for trackless auxiliary transportation in coal mines have been widely used in some foreign countries with advanced coal mining technology, such as the United States, Australia, the United Kingdom, and South Africa. develop rapidly. In the mid-to-late 1990s, in order to change the situation that the auxiliary transportation mode of coal mines lags behind the development of mining technology, large mining areas such as Shendong, Yanzhou and Jincheng successively introduced complete sets of trackless rubber tire transportation equipment, which have been successfully used in flat,...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the problem of potential accidents caused by misoperation of the hydraulically driven explosion-proof vehicles of the underground trackless auxiliary transport machinery in coal mines, and provides an isolation protection device and control system based on hydraulic mechanical transmission

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