VEHICLE HYDRAULIC STEERING MECHANISM Russian patent published in 1994 - IPC

FIELD: transport engineering. SUBSTANCE: mechanism has housing 1 of hydraulic control valve unit 2, OR valve 15 whose inputs 16 and 17 are connected with holes 6 and 7 through which inputs communicate with spaces of slave hydraulic cylinder 10. Output 18 is connected with input 19 of antishock safety valve 12. In case of sharp pressure rise in cylinder hole 6 or 7 to value exceeding pressure setting of antishock safety valve 12 which is caused by sharp impact loads on slave hydraulic cylinder 10, working fluid flows through input 16 or 17 of OR valve 15, its output 18 and input 19 of valve 12. EFFECT: enhanced reliability of operation. 1 dwg