| 摘要 |
The attachment has a coupling device for coupling the attachment with a working vehicle. A control actuator (1) e.g. hydraulic cylinder, is subjected with outside energy, and coupled with the coupling device. The coupling device exerts a force on the vehicle in a switched on condition of the actuator. Switch off of the actuator is controlled by a hydraulic control variable that is based on another control variable, which brings the attachment into a headland and/or transport position. A double-acting control valve (20) i.e. double-acting non-return valve, is arranged upstream of the actuator. |
