Document Type and Number:
Japanese Patent JPH0449367
Kind Code:
B2
Abstract:
A hydraulic control arrangement for actuating a lifting mechanism of an agricultural machine has a hydraulic motor arranged to lift and lower at least one member of a lifting mechanism, a hydraulic pressure medium source, a directional control valve arranged to control the hydraulic motor, a structural element having a bending elasticity arranged so that forces transmitted from the lifting mechanism member in a machine housing are at least partially transmitted via the structural element and the latter is bent, and a hydromechanical transformer having two parts movable relative to one another and a hydraulic control circuit for controlling the directional control valve and arranged so that bending of the structural element is used by the transformer as an adjusting member, wherein the structural element is directly formed as these parts movable relative to one another and influencing in a pressure medium streams through the transformer, and the parts include a first part which is hollow, has bending elasticity and is exposed to the bending forces, and a second part which does not have bending elasticity, is not exposed to the bending forces and is received in the first part, and the second part is fixedly connected in at least one point with the first part and has a free end which is spaced from this point and forms an adjustable throttling point of the transformer.
Inventors:
UERUNERU SHUTEPURAATO
DEIITERU UAIKURE
DEIITERU UAIKURE
Application Number:
JP4084483A
Publication Date:
August 11, 1992
Filing Date:
March 14, 1983
Export Citation:
Assignee:
BOSCH GMBH ROBERT
International Classes:
F15B9/08; A01B63/00; A01B63/112; F15B5/00; G01L5/13
Next Patent: DOUBLE FLOOR CONSTRUCTION