VEHICLE HYDRAULIC STEERING MECHANISM Russian patent published in 1997 - IPC

FIELD: transport engineering; automotive industry; steering mechanisms. SUBSTANCE: steering wheel has control line and is provided with feedback hydraulic motor, differential, distributing and control devices and priority device with spool valve loaded at one end face by pull-back spring. Hydraulic steering mechanism is distinguished from other steering mechanisms in use by making of control device in form of OR check valve with two inputs and one output and restrictor connected with check valve and with distributing device so that output of OR check valve is connected with control line of hydraulic steering wheel and with input of restrictor whose output is connected with return line, and both inputs of OR check valve are connected with corresponding lines of feedback hydraulic motor. Distributing device has two additional extreme positions in which one corresponding inputs of OR check valve in closed. EFFECT: improved performance characteristics of steering mechanism, reduced overall dimensions. 2 cl, 1 dwg