Still Gmbh

Linde Material Handling Gmbh

Markus Schwab

Caspar Tügel

Ulrich Knechtel

Ronald Ziel

A hydraulic system for an industrial truck with a lifting frame has at least one telescoping mast that can be raised and lowered in a stationary mast and a load handling means that can be raised and lowered in the telescoping mast. The hydraulic system has a free lift cylinder for raising and lowering the load handling means and at least one mast lift cylinder for raising and lowering the telescoping mast. A control valve device is provided for the control of the lifting operation and the lowering operation of the free lift cylinder and of the mast lift cylinders. A mast transition damping device is provided that includes at least one electrically actuated proportional valve. The proportional valve of the mast transition damping device, in the unactuated state, has a throttling connection that effects a throttled volume flow, and in the event of an electrical control action, can be actuated toward an open position.

Hydraulic system for an industrial truck

A hydraulic system () for an industrial truck, in particular an electrically operated, battery-powered industrial truck, includes a lift drive () to raise and lower a load handling device. The hydraulic system () has a first hydraulic pump () which is configured to supply the lift drive () with hydraulic fluid, and a second hydraulic pump () which can be switched on by means of a valve device () for the supply of the lift drive (). The first hydraulic pump () and the second hydraulic pump () are configured as a hydraulic double pump unit () and the valve device () is integrated into the hydraulic double pump unit ().

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Mölln, Germany

Markus Schwab