Hydraulic system for counterbalance fork-lift truck, has feed pipe attached at pump and staying in connection with priority valve for feeding steering device, where pressure level of fan drive corresponds to pressure level of device

摘要

The hydraulic system has a pump (2) e.g. fixed displacement pump, for feeding a production hydraulics (4) e.g. lift drive. Another pump (3) feeds a fan drive (11). A feed pipe (13) is attached at the pump (3) and stays in connection with a priority valve (14) for feeding a hydraulic steering device (10), where pressure level of the fan drive corresponds to pressure level of the steering device. A feed branch pipe (15) guided to the steering device is attached at the priority valve, and another feed branch pipe (18) guided to the fan drive is attached at the priority valve.