Driver's cab hydraulic tipping mechanism - has upper power cylinder space connected to oil reservoir via two non-return valves

摘要

The driver's cab tipping mechanism is operated by a hydraulic power cylinder (1). The cylinder contains pistons (3) and (5). The first piston (3) carries a piston rod (4) connected to the cab and second piston (5) designed as a floating piston has non-return valve (8) fitted in the axial passage direction. The upper cylinder space (10) is connected with the oil reservoir (19) by a pipeline (21) with a housing (22) contg. non-return valves (23), (25) inserted between cylinder space (10) and the upper end of the pipeline (21). The two non-return valves operate in opposite directions. The spring (24) of non-return valve is dimensioned in such a way that negative pressure occuring during the lowering movement in space (10) cannot open it.