VEHICLE HYDRAULIC STEERING MECHANISM Russian patent published in 1994 - IPC

FIELD: transport engineering. SUBSTANCE: hydraulic steering mechanism has housing, stop and plunger arranged in channel between holes to provide hydraulic connection with hydraulic cylinder, adjusting threaded sleeve with holes which is placed inside spring of safety valve. In case of sharp pressure rise in hole providing connection with hydraulic cylinder, plunger, under action of pressure difference in hydraulic cylinder spaces, shifts into one of extreme positions and places indicated hole in communication with antishock safety valve. The latter, overcoming resistance of its spring, lets working fluid pass into hydraulic tank. EFFECT: enhanced reliability of operation, reduced labour input at manufacture and assembling, enhanced convenience of operation. 3 dwg