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    Tractor
    1.
    发明授权
    Tractor 有权

    公开(公告)号：US12214657B2

    公开(公告)日：2025-02-04

    申请号：US17969975

    申请日：2022-10-20

    Applicant: YANMAR POWER TECHNOLOGY CO., LTD.

    Inventor： Yoshiaki Kurokawa

    IPC: B60K15/063 ,  F01N3/20 ,  B60K13/04

    Abstract: A tractor including: a traveling body having an engine; a post-processing device configured to purify exhaust gas of the engine; and a reductant tank configured to store a reductant to be supplied to the post-processing device. A pair of left and right fuel tanks are arranged respectively on left and right sides of a longitudinally midway portion of the traveling body. A tank-accommodation recess for accommodating a reductant tank is formed at a lower-front portion of one of the left and right fuel tanks. While the reductant tank is accommodated in the tank-accommodation recess, an upper front portion of the fuel tank and the reductant tank are aligned up and down.

    Area registration method and area registration system
    3.
    发明授权
    Area registration method and area registration system 有权

    公开(公告)号：US12193348B2

    公开(公告)日：2025-01-14

    申请号：US17800877

    申请日：2021-02-03

    Applicant: Yanmar Power Technology Co., Ltd.

    Inventor： Yasuto Nishii ,  Taiki Shirafuji

    IPC: A01B69/04 ,  G05D1/00

    Abstract: An area registration method including setting information about a work vehicle that autonomously travels in a travel area; setting a work area which is included in the travel area and in which the work vehicle performs work; setting a headland area that is included in the travel area and is located on the outer side of the work area; and, when an operation for inputting the set information of the headland area is received after the work area and the headland area have been set, changing the sizes of the work area and the headland area on the basis of the inputted set information.

    Automatic travel system for work vehicles
    5.
    发明授权
    Automatic travel system for work vehicles 有权

    公开(公告)号：US12035647B2

    公开(公告)日：2024-07-16

    申请号：US17271543

    申请日：2019-07-09

    Applicant: Yanmar Power Technology Co., Ltd.

    Inventor： Shogo Fujimoto

    IPC: A01B63/111 ,  G05D1/00

    CPC classification number: A01B63/111 ,  G05D1/0011

    Abstract: An automatic travel system for a work vehicle allows the work height of a work device to be easily and appropriately adjusted by a remote operation that uses a remote operation device for a work vehicle during automatic travel. The automatic travel system for work vehicles includes an automatic travel unit, and a remote operation device, for a work vehicle. A work vehicle has a work height setting unit, a height detector, a raising and lowering indicator, and a raising and lowering control unit, for a work device. The raising and lowering control unit sets a control target height to a work height on the basis of the indication of the raising and lowering indicator and executes automatic raising and lowering control so that the height position of a work device (6) matches the work height. The remote operation device has a display device that displays remote operation information, and a work height adjustor that allows adjustment of the work height while in automatic travel mode. The display device has a work height display section that displays the work height of the work device, the work height after adjustment, and the height position of the work device.

    WORK VEHICLE
    6.
    发明公开
    WORK VEHICLE 审中-公开

    公开(公告)号：US20240110360A1

    公开(公告)日：2024-04-04

    申请号：US17768589

    申请日：2020-11-13

    Applicant: YANMAR POWER TECHNOLOGY CO., LTD.

    Inventor： Katsumi Fujiki

    IPC: E02F3/38 ,  E02F3/34 ,  E02F9/02

    CPC classification number: E02F3/382 ,  E02F3/3414 ,  E02F9/02

    Abstract: A work vehicle according to the present embodiment comprises: a vehicle body; a pair of traveling parts disposed on both sides of the vehicle body; a cabin which is a front part of the vehicle body and disposed above the traveling parts; an arm which is disposed above the traveling parts and extends forward from behind the cabin and which is pivoted so as to be capable of swinging upward and downward; a first link for connecting the vehicle body and the arm; a cylinder for swinging the arm; a second link which is disposed between the arm and the traveling parts, and restricts the swing direction of the arm; a first pivoting part for pivoting one end of the first link; and a sixth pivoting part for pivoting the other end of the second link at a protruding end of a protrusion part protruding from the arm.

    Brake system for work vehicles
    7.
    发明授权
    Brake system for work vehicles 有权

    公开(公告)号：US11919492B2

    公开(公告)日：2024-03-05

    申请号：US17056700

    申请日：2019-04-11

    Applicant: Yanmar Power Technology Co., Ltd.

    Inventor： Tatsuya Ishino ,  Toshikazu Matsubayashi

    IPC: B60T13/74 ,  B60T1/02 ,  B60T7/04 ,  B60T7/12 ,  B60T11/04 ,  B60T17/22 ,  F16H57/02

    CPC classification number: B60T13/746 ,  B60T1/02 ,  B60T7/04 ,  B60T7/12 ,  B60T11/04 ,  B60T17/221 ,  F16H57/02 ,  B60T2270/402 ,  B60T2270/406 ,  F16H2057/02034 ,  F16H2057/02082

    Abstract: An emergency stop brake operation assembly necessary for a work vehicle when travelling autonomously in an unmanned state is provided in this brake system without introducing problems to manual driving of the work vehicle by an occupant. This brake system for work vehicles comprises: a brake pedal that is disposed in a driving section; a brake that brakes left and right rear wheels; a linkage mechanism that links the brake pedal and the brake in such a manner as to allow the brake pedal and the brake to operate in conjunction with each other; and an electric brake operating device that actuates the brake in response to an emergency stop command. The brake operating device has: an operation-receiving body that is coupled to the brake pedal; an electric actuator that operates the operation-receiving body; and a clearance-provided section which is located between the brake pedal and the electric actuator and allows displacement of the brake pedal and the linkage mechanism with respect to the electric actuator when the brake pedal is depressed.

    Route generation system, and autonomous travel system causing work vehicle to travel along route generated thereby
    8.
    发明授权
    Route generation system, and autonomous travel system causing work vehicle to travel along route generated thereby 有权

    公开(公告)号：US11913793B2

    公开(公告)日：2024-02-27

    申请号：US17669389

    申请日：2022-02-11

    Applicant: Yanmar Power Technology Co., Ltd.

    Inventor： Toshifumi Hiramatsu

    IPC: G01C21/34 ,  G05D1/00

    CPC classification number: G01C21/34 ,  G05D1/0088

    Abstract: In a route generating system a work vehicle setting unit sets a vehicle information on a tractor. An altitude information obtaining unit obtains altitude information on a field where an autonomous travel route is to be generated. A traveling direction setting unit sets a traveling direction of the tractor in the field. A region setting unit sets, in the field, a plurality of regions including a work region where autonomous work paths in parallel with the traveling direction are generated and headlands where connection paths each connecting corresponding ones of the autonomous work paths are generated. The region setting unit sets the widths of the headlands (headland widths) based on the vehicle information, the altitude information, and the traveling direction, the widths of the headlands extending in parallel with the traveling direction.

    Work vehicle
    10.
    发明授权
    Work vehicle 有权

    公开(公告)号：US11884305B2

    公开(公告)日：2024-01-30

    申请号：US17057560

    申请日：2019-04-11

    Applicant: Yanmar Power Technology Co., Ltd.

    Inventor： Kenta Ikenori

    IPC: B60W60/00 ,  B60Q9/00 ,  B60T7/04 ,  B60T7/06 ,  B60T7/12 ,  B60T13/74 ,  B60T17/22 ,  G05D1/00 ,  A01B69/04 ,  B60T11/04

    CPC classification number: B60W60/0051 ,  B60Q9/00 ,  B60T7/042 ,  B60T7/06 ,  B60T7/12 ,  B60T13/741 ,  B60T17/221 ,  G05D1/0061 ,  A01B69/008 ,  B60T11/04 ,  B60T2220/04 ,  B60T2270/406 ,  G05D2201/0201

    Abstract: The present invention makes it possible to avoid the risk of a brake operation system for emergency stopping not operating normally during autonomous travel of a work vehicle. A work vehicle is provided with: a foot brake for braking left and right rear wheels; an autonomous travel unit that enables autonomous travel of the vehicle; and an electric actuator for switching the foot brake between a braking state and a release state. The autonomous travel unit comprises a control unit for controlling the operation of the electric actuator. When an autonomous travel mode is selected by human operation of a mode selection unit, the control unit performs operation verification processing in which it is verified by operation control of the electric actuator whether the foot brake is operating normally, and when it is verified that the foot brake is operating normally in the operation verification processing, said control unit transitions to a completed operation verification state and allows the travel mode to transition from a manual travel mode to the autonomous travel mode.

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