Hydraulic machine for disassembling screw-bolts

The utility model relates to a hydraulic machine for disassembling screw-bolts, comprising a machine frame, a front support seat which is fixed on the machine frame, a back support seat which is fixed on the machine frame, a transmission shaft which is supported and fixed on the front support seat and the back support seat through a bearing, a shaft head which has a shape of a screw nut and is arranged on the front end of the transmission shaft, a driving wheel of the transmission shaft which has side extending ears on the both sides and is fixed on the middle part of the transmission shaft, a hydraulic cylinder which is hinged with a piston rod and the side extending ears on the both sides of the driving wheel of the transmission shaft. The hydraulic cylinder is arranged on the both sides of a supporting column of the machine frame, and the bottom of the cylinder body is hinged with a fixed plate on the machine frame. The hydraulic disassembly and assembly machine for screw bolts makes use of a pump station hydraulic system of a comprehensive face for a mine as a power source of the hydraulic motor. So the looseness, disassembly and assembly of the screw bolts can be realized conveniently, quickly and easily. The utility model provides a special disassembly and assembly device for screw bolts for the downhole, has the advantages of simple structure, safety, reliability, convenient operation and is suitable for each place with hydraulic power, in particular to the downhole with a gaseous mine. The problem of out of explosion does not exist. The utility model is convenient for moving and has better safety.