| 摘要 |
A hydraulic tipping apparatus for tipping the driving cabs of lorries from tipped to non-tipped positions comprises a pump (at 10), a pressure fluid tank (at 7), a double-acting piston/cylinder unit (2/1) wherein the piston rod (3) and cylinder (1) are respectively connected to the driving cab and the chassis frame structure. In the bottom dead-centre position of the piston (2), the two cylinder chambers (4, 5) are connected together by way of a conduit (11). The lower cylinder chamber (4) which is connected to the first pressure fluid conduit (6, 7) is connected to the pressure fluid tank by way of a valve (16) which is opened by the piston (2) after passing over the port (12), and an orifice (24'). A conduit check valve (15) which opens towards the lower cylinder (4) is disposed in the connecting conduit (11). <IMAGE> |
