Hydraulic control power cutting device of down-hole trackless rubber-tyred car

Abstract

The invention belongs to a power cutting device of a down-hole trackless rubber-tyred mine car, particularly relates to a hydraulic control power cutting device of a down-hole trackless rubber-tyred car, and solves the abrasion problem of a brake, a friction plate, a transmission shaft and the like in the travelling brake process of the current down-hole trackless rubber-tyred car. The hydraulic control power cutting device is composed of a valve body I, a valve body II, a valve body III, a directional operating valve, a shift operating valve and a power cutoff valve assembly, wherein the power cutoff valve assembly comprises a pressure adjusting part arranged in the cavity of the valve body VI, power cutoff parts arranged in the cavities of the valve body I and the valve body II, and a reset part. The hydraulic control power cutting device of the down-hole trackless rubber-tyred car in the invention has the beneficial effects that: 1, during travelling brake, components such as a travelling brake, a gearbox friction plate, a transmission shaft and the like can be effectively protected; 2, interlocking of the travelling brake and a gearbox clutch on operation can be realized; 3, output of a pressure with a constant valve from a right end of a hydraulic piston can be realized; and 4, the power cutting device has a more reasonable structure and better generality.

Description

technical field [0001] The invention belongs to a power cutting device of an underground trackless rubber-tyred vehicle in a coal mine, and in particular relates to a hydraulic control type power cutting device of an underground trackless rubber-tyred vehicle. Background technique [0002] The driving conditions of trackless rubber-tyred vehicles in coal mines are harsh, and the service brake pedal is often required to be stepped on during driving. However, when the service brake pedal is stepped on, the power of the gearbox is not cut off, so that the engine power passes through the torque converter. , gearbox and drive axle multiple deceleration, the torque increases a lot, it will increase the wear of the service brake, the friction plate of the gearbox and the wear of the entire transmission system, and even cause the fracture of the transmission shaft. [0003] At present, some loaders on the ground that use the air cap fluid braking system have the function of cutting ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the wear problem of brakes, friction plates and transmission shafts of the existing underground trackless rubber-tyred vehicles during the service braking process, the present invention provides a hydraulically controlled power cut-off device for underground trackless rubber-tyred vehicles. Cut off the power output of the gearbox when the service brake is applied to protect the service brake, transmission friction plate and drive shaft, etc.

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