| 摘要 |
The present invention relates to a hydraulic winch such as an auger device and a hammer device capable of efficiently perforating as a free fall is easy and convenient. The hydraulic winch according to the present invention includes a base plate; a hydraulic motor which is installed on one side of the base plate and which includes a key formed on the front end of a motor shaft in the longitudinal direction; a drum which is installed on the motor shaft to be rotated and where wires are wound; a hydraulic cylinder which is installed on the other side of the base plate and which includes a piston installed on the front end of a rod horizontally moving when fluid pressure is supplied to be rotated, a groove where the front end of the motor shaft is received on the front end surface of the piston, and a key groove, where the key is received, on the inner circumference of the groove; a first clutch formed on the drum; a second clutch which is formed on the edge of the front end surface of the piston of the hydraulic cylinder and engaged with the first clutch; and a spring of which one end is fixed to a wall installed on the other side of the base and the other end is fixed to the rear end of the rod and which continuously pulls the rod. |
