Hydraulic control apparatus for a servo-motor, particularly...

Details Hydraulic control apparatus for a servo-motor, particularly... Hydraulic control apparatus for a servo-motor, particularly...

B - Operations, Transporting

62

D

138/60.1

B62D 3/14 (2006.01) B62D 5/097 (2006.01)

Patent

CA 1215608

Abstract In a hydraulic control apparatus for a servo-motor, particularly for vehicle steering, there is an outer housing (30) in which a motor housing (47) is rotatable through a limited angle against the force of neutral position springs. The first motor part (44) is connected to the control shaft (19). The motor housing (47) containing this motor part (43) comprises control orifices which, together with control orifices in the outer housing (30), form a supply throttle. Connected to the motor housing (47) there is a rotary slide (55). The latter has control orifices which form a bypass throttle (25) together with control orifices at the outer housing (30). A pressure regulating apparatus (24) ensures that the pressure drop at the bypass throttle (25) is equal to the pressure drop at the supply throttle. In this way, with a simple construction for the control apparatus, a servo-motor can be fed with metered pressure fluid by way of the supply throttle and an amount functionally dependent thereon by way of a bypass path. Fig. 2.

443908

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