| 摘要 |
PURPOSE:To miniaturize a cylinder and to prevent a temperature rise of pressurized oil by forcedly supplying pressurized oil into one pressure chamber from a pressure source and providing a connecting hole penetrating the other pressure chamber and the outside of the cylinder in the wall of the cylinder or a piston rod. CONSTITUTION:The inside of a cylinder 1 is divided into one pressure chamber A and the other pressure chamber B by a piston 2, pressurized oil is supplied to the pressure chamber A from a pump P, and the pressurized oil flows at a specified resistance only in the direction of the pressure chamber B from the pressure chamber A through a valve 7 installed in the piston 2. The pressurized oil flowing from the pressure chamber A to the pressure chamber B through the sidewall of a piston rod 3 is stopped by a valve 8 installed in the piston 2 and then discharged from an opening 11 in the sidewall of the piston rod 3 to the outside through an opening 10 on pressure chamber A-side of the valve 8, a throttle 13, add a connecting path 12. Thus, since the pressurized oil is discharged to the outside by sliding the piston 2, a temperature rise of the pressurized oil is prevented, and intense vibration can be eliminated by miniaturizing the cylinder, maintenance-free operation can be achieved. |
