Hydrostatic control device, particularly a steering device

Details Hydrostatic control device, particularly a steering device Hydrostatic control device, particularly a steering device

B - Operations, Transporting

62

D

138/57

B62D 5/08 (2006.01) B62D 5/093 (2006.01) B62D 5/12 (2006.01)

Patent

CA 1155729

ABSTRACT OF THE DISCLOSURE The specification describes a hydrostatic control device, and in particular a steering device, for driving in both directions a servo-motor having a differential piston which sub-divides the cylinder into a first operating chamber of larger pressure area and a second operating chamber of smaller pressure area. The control device comprises a pump connection, a tank connection, a first motor connection for the first operating chamber and a second motor connection for the second operating chamber, a control element such as a steering wheel, a measuring motor connectable in series to the servo-motor, and a control valve which is adjustable by the control element and resettable by the measuring motor and has a neutral position as well as two operating positions. In the one operating position the first motor connection is connected to the tank connection and the second motor connection to the pump connection, in the other operating position both motor connections are connected to each other and to the pump connection. In the neutral position both motor connections are interconnected by way of the measuring motor.

376553

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