Lifting device for industrial truck for handling loads, has control valve operated in locking position when pressure value falls below predetermined pressure threshold value, where pressure value is detected by pressure sensor

摘要

The device (1) has a pressure sensor (30) standing in connection with an electronic controlling unit (25) that controls a control valve (12). The electronic controlling unit is formed in such a manner that a lifting attachment (3) is lowered during depression process. The control valve is operated in a depression position (13c) by the control unit using the electronic controlling unit. The control valve is operated in a locking position (13a) when pressure value falls below a predetermined pressure threshold value. The pressure value is detected by the pressure sensor. An independent claim is also included for a method for operating a lifting device of an industrial truck.