HYDROMECHANICAL LIFTING DEVICE FOR SERVICING OF WHEELED VEHICLES Russian patent published in 1997 - IPC

FIELD: transport engineering; lifting, transportation and diagnostic devices for maintenance and repair of vehicles. SUBSTANCE: device had U-shaped bridge 4 hinge-mounted on base, hydraulic cylinders 1, hinge-coupled with base and bridge, hydraulic jacks 5 engaging with vehicle units and installed on cross beam 6. Above-piston spaces of hydraulic cylinders 1 communicate through check valve 3 with under-piston spaces of hydraulic jacks 5, and above-piston and under-piston spaces of hydraulic cylinders communicate through control valve 12. Control cock 7 placed in oil supply main line connecting under-piston spaces of hydraulic cylinders 1 with tank (reservoir) 9 and valve is installed in oil supply main line connecting reservoir 9 with under piston spaces of hydraulic cylinders 1. Power unit is not required for operating the device as movement of hydraulic jacks 5 is provided by delivery of oil into their spaces under action of mass of vehicle under servicing. EFFECT: enlarged operating capabilities. 2 cl, 1 dwg