| 摘要 |
<p>PURPOSE:To enable quick connection corresponding to driving speed change operation by coupling the operating chamber of a pneumatic actuator through a solenoid gate valve with an air tank and with the operating chamber of a control valve, and coupling the solenoid gate valve with the atmospheric port of an atmospheric chamber in the control valve. CONSTITUTION:When a solenoid gate valve D1 is closed to block the atmospheric chamber 21 of a control valve 30 from the atmosphere and a solenoid gate valve C1 is opened to feed pressurized air from an air tank 2 into the operating chamber 31 of a pneumatic actuator 5, a piston 15 in the pneumatic actuator 5 reciprocates to disengage the clutch. When the solenoid gate valve C1 is closed and the solenoid gate valve D1 is opened, air in the operating chamber 31 of the pneumatic actuator 5 is discharged through a pipe 19, the operating chamber 22 of the control valve 30, a path 34a of a valve 34, the atmospheric chamber 21 and the solenoid gate valve D1 to the atmosphere. Consequently, the piston 15 is reciprocated through returning force of spring thus engaging the clutch quickly.</p> |
