To provide a gas/hydraulic drive device which achieves cost reduction in manufacture or transportation by suppressing the size thereof without impairing a function of a gas/hydraulic pressure transducer.
The gas/hydraulic drive device is provided with a gas supply source for supplying pressure gas, a solenoid valve for supplying the pressure gas from the gas supply source as required, a gas/hydraulic pressure transducer which receives the pressure gas from the solenoid valve and generates oil pressure by the pressure gas, a relief valve provided between the gas/hydraulic pressure transducer and the operation machine for supplying the oil pressure therefrom, a switching means including a switch valve, a manual pump or the like, a cylinder having an operation machine activating a valve or the like by the oil pressure from the switching means and chambers into which the the gas/hydraulic pressure transducer is divided, and pistons which are provided to respective chambers and moved interlocking with each other. The pressure gas from the gas supply source is supplied to or oil is filled in one side or both sides of pistons in respective chambers.
KURATA AKIRA
| JPH10238502A | 1998-09-08 | |||
| JPS58207502A | 1983-12-03 | |||
| JPS63106401A | 1988-05-11 | |||
| JPH0712601U | 1995-03-03 |
Hajime Asamura
Takakazu Yamamoto
Yutaka Yoshida