Hawe Altenstadt Holding Gmbh

Hoerbiger Automatisierungstechnik Holding Gmbh

Thomas Stockmeier

Christian Hart

Martin Storz

Gerhard Rinninger

Erich Rankl

Danny Aurich

Klaus Fiedler

A hydraulic lifting column comprising a base structure, a head structure and a lifting structure. The lifting structure comprising a hydraulic power unit and hydraulic linear actuators extending between the base structure and the head structure, the hydraulic power unit acting on the hydraulic linear actuators. The lifting structure comprising four linear actuator units with a mutually parallel, vertically oriented working direction. Each linear actuator unit comprising a double cylinder having two-cylinder bores arranged next to one another and two piston structures with piston rods oriented parallel to one another and extendable in opposite directions from the double cylinder. The four lower piston rods are connected to the base structure at the corners of a first quadrilateral and the four upper piston rods are connected to the head structure at the corners of a second quadrilateral.

Hydraulic lifting column

A chassis of a transportable device including a base structure, four casters arranged thereon, four lowerable and raiseable support feet also mounted on the base structure, and a hydraulic support foot actuating device. The hydraulic support foot actuating device has a reservoir (), a pump () manually operable by hand or foot, four support foot linear actuators () and a purely hydro-mechanical pipe and valve arrangement () which connects the reservoir (), the pump () and the linear actuators () to one another. Therein, by means of hydraulic fluid delivered by the pump () from the reservoir () the two support feet assigned to two primary linear actuators () can be fully extended until a mechanical stop is reached while raising the base structure by first applying pressure to the two primary linear actuators () before applying pressure to the two other, secondary linear actuators ().

Chassis of a transportable device

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Wuppertal, Germany

Thomas Stockmeier