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    COMPACTION MACHINE STEERING SYSTEM
    2.
    发明公开
    COMPACTION MACHINE STEERING SYSTEM 审中-实审

    公开(公告)号：EP4311878A3

    公开(公告)日：2024-04-03

    申请号：EP23187612.9

    申请日：2023-07-25

    申请人： Wacker Neuson America Corporation

    发明人： KNUTSON, Donovan ,  HENSCH, Andrew

    IPC分类号： E01C19/26 ,  B62D12/00 ,  E01C19/28 ,  E02D3/032

    摘要： A compaction machine system includes a compaction machine in communication with a remote control. The compaction machine includes a mobile chassis with a first and second subframes pivotably connected at a pivot connection, a steering angle sensor, a steering actuator for causing the first and second subframes to pivot, and a control unit in communication with the steering angle sensor and with the steering actuator. The control unit determines an operational stroke of the of the steering actuator and controls the steering actuator based on the input from the direction control and the determined operational stroke of the steering actuator. When the steering actuator is at a limit of its operational stroke, the control unit overrides commands from the direction control that otherwise would result in extending or retracting the steering actuator stroke beyond its operational limit. The control unit also returns the steering actuator to its neutral position in the absence of an operator-generated steering command.

    ESTIMATING HYDRAULIC FLOW IN A STEERING SYSTEM OF AN ARTICULATED VEHICLE
    5.
    发明公开
    ESTIMATING HYDRAULIC FLOW IN A STEERING SYSTEM OF AN ARTICULATED VEHICLE 审中-公开

    公开(公告)号：EP4180305A1

    公开(公告)日：2023-05-17

    申请号：EP22204267.3

    申请日：2022-10-27

    申请人： Caterpillar SARL

    发明人： COX, Craig ,  MCNAMEE, Niall ,  BAKKEN, Arick ,  CAIRNS, Paul

    IPC分类号： B62D12/00 ,  B62D5/07 ,  B62D15/02

    摘要： A method of estimating hydraulic flow in a steering system of an articulated vehicle (1), a controller (6) configured for the method and an articulated vehicle (1) are provided. The method comprises:
    a) sensing a yaw rate ( θ̇ ) of the articulated vehicle (1);
    b) sensing a velocity ( v ) of the articulated vehicle (1);
    c) determining an estimate of a steering angle rate ( δ̇ ) of the front part (2) of the articulated vehicle (1) using the sensed yaw rate (9) and the sensed velocity ( v );
    d) determining an estimate of the hydraulic flow in the steering system of the articulated vehicle (1) using the estimate of the steering angle rate ( δ̇ ) and one or more geometrical parameters of the steering system.

    CRAWLER VEHICLE AND CONTROL METHOD OF SAID VEHICLE
    6.
    发明公开
    CRAWLER VEHICLE AND CONTROL METHOD OF SAID VEHICLE 审中-公开

    公开(公告)号：EP4170093A1

    公开(公告)日：2023-04-26

    申请号：EP22201920.0

    申请日：2022-10-17

    申请人： PRINOTH S.p.A.

    发明人： KIRCHMAIR, Martin ,  PAOLETTI, Alberto ,  WOOD, Alex ,  LABBE, Jean Francois

    IPC分类号： E01H4/02 ,  B62D12/00

    摘要： A crawler vehicle has a frame (2) ; a working tool (8) hinged at the back of the frame (2) around a yaw axis (A3); and actuation system (9), which is configured to act between the working tool (8) and the frame (2); and a control device (16), which is configured to calculate a value of the steering radius of the crawler vehicle (1) and to control the actuation system (9) so as to selectively: allow the working tool (8) to freely oscillate about the yaw axis (A3) when the calculated value of the steering radius is comprised within a reference interval; keep the position of the working tool (8) blocked with respect to the frame (2) when the calculated value of the steering radius is outside the reference interval.

    ARTICULATED VEHICLE
    10.
    发明授权
    ARTICULATED VEHICLE 有权

    公开(公告)号：EP2999615B1

    公开(公告)日：2018-08-15

    申请号：EP14801851.8

    申请日：2014-04-25

    申请人： Bae Systems Hägglunds Aktiebolag

    发明人： HELLHOLM, Björn

    IPC分类号： B62D11/20 ,  B60P3/40 ,  B62D12/00 ,  B62D55/065

    CPC分类号： B62D55/0655 ,  B60D5/00 ,  B60D2001/008 ,  B60P3/41 ,  B62D7/026 ,  B62D11/20 ,  B62D12/02

    摘要： The invention relates to an articulated vehicle comprising a front and a rear vehicle unit, and at least one further vehicle unit connected to said rear vehicle unit, comprising a front vertical steering link arranged substantially centrally of the front vehicle unit, where said front vertical steering link is configured for pivotal attachment to a fixed load-carrying frame connecting said front and rear vehicle units, where said at least one further vehicle unit is configured for attachment to a further fixed load-carrying frame, where said further fixed load-carrying frame is releasably connectable to said fixed load-carrying frame for said connection, such that a train of vehicle units is formed connected to a load-carrying frame unit comprising said fixed load-carrying frame and said further fixed load-carrying frame.