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.