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    • 1. 发明申请
    • AN ARTICULATED WORKING MACHINE VEHICLE
    • WO2021170231A1
    • 2021-09-02
    • PCT/EP2020/055031
    • 2020-02-26
    • VOLVO CONSTRUCTION EQUIPMENT AB
    • EKEVID, TorbjörnJOHANSSON, PeterWILHELMSSON, Markus
    • B60P1/16B60G17/0195
    • The invention relates to a working machine vehicle (1) provided with a supporting frame (6) and a pivoted load container (5), wherein the vehicle (1) is configured to allow tilting of the load container (5) from a transport position to a tilted position for dumping of a load from the load container (5), wherein the vehicle (1) is provided with a suspension arrangement (20, 120) configured to reduce transfer of vibrations between the frame (6) and the load container (5) when the load container (5) is in its transport position, wherein the suspension arrangement (20, 120) comprises a spring element (11, 115) and a damper element (9, 10, 11, 109, 110, 112, 113), and wherein the vehicle (1) further is provided with at least one hydraulic hoist cylinder (9, 109) connected between the frame (6) and the load container (5) and arranged to lift and tilt the load container (5) to the tilting position for dumping. The hydraulic hoist cylinder (9, 109) forms part of a hydraulic system comprising a container (11, 112) for hydraulic fluid and at least one conduit (10, 110, 113) that connects the hydraulic hoist cylinder (9, 109) with the container (11, 112) so as to form a flow passage for hydraulic fluid between the hydraulic hoist cylinder (9, 109) and the hydraulic container (11, 112), and wherein the flow passage is arranged to exert a flow resistance to a hydraulic fluid flowing through the flow passage so as to dampen an oscillating flow through the flow passage and thereby form the damper element of the suspension arrangement (20, 120).