HYDRAULIC SYSTEM Russian patent published in 1994 - IPC

FIELD: vehicles. SUBSTANCE: above- piston and under-piston spaces of actuating hydraulic cylinders are connected to a gear pump via hydraulic lines and to a tank via corresponding three-positioned hydraulic distributors having control unit and spring for returning of slides to neutral position. The control unit is made of a base provided with hydraulic distributors and cantilever. A lever with a carrier coupled with the slide is set on axle of the cantilever. The carrier of the second lever is coupled with the other slide and carrier positioned on its axle within a bushing of the cantilever and mounted for interaction with a seat of a rocker by its ball bearing. The rocker is mounted on a pin positioned within openings of the cantilever and coupled with the third slide. EFFECT: enhanced reliability. 4 dwg