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14 条记录 (耗时 0.015 秒)

    WORK VEHICLE
    1.
    发明公开
    WORK VEHICLE 审中-公开

    公开(公告)号：EP4015871A1

    公开(公告)日：2022-06-22

    申请号：EP21206085.9

    申请日：2021-11-02

    申请人： Kubota Corporation

    发明人： YAMAGUCHI, Tetsuo ,  IWASE, Ryoma ,  YAMAWAKI, Komei

    IPC分类号： F16H47/04 ,  F16H61/42 ,  F16H61/47

    摘要： A work vehicle including: an engine (1); a speed changing apparatus (18) that includes a hydrostatic stepless speed changing mechanism (18A) and is configured to subject motive power transmitted from the engine (1) to speed changing and output the motive power; a travelling apparatus configured to travel on the motive power received from the speed changing apparatus (18); a speed detector (27) configured to detect a speed of the travelling apparatus (6, 7); a pressure detector (25, 26) configured to detect a hydraulic pressure in a closed circuit of the hydrostatic stepless speed changing mechanism (18A); and a controller (80) configured or programmed to: determine, by means of a determination module (81), whether or not a swashplate angle of the hydrostatic stepless speed changing mechanism (18A) is an angle suitable for stopping the work vehicle, based on the speed and the hydraulic pressure; and change the swashplate angle by means of an angle control module (82), based on a result of the determination by the determination module (81).

    WORK VEHICLE
    2.
    发明公开
    WORK VEHICLE 审中-公开

    公开(公告)号：EP3872269A3

    公开(公告)日：2021-09-08

    申请号：EP21159320.7

    申请日：2021-02-25

    申请人： Kubota Corporation

    发明人： YAMAGUCHI, Tetsuo ,  MATSUDA, Takudai

    IPC分类号： E02F9/22 ,  A01B63/10 ,  A01D69/03 ,  E02F9/26 ,  F16H61/4165

    摘要： A work vehicle (1) provided with a lifting mechanism (30) configured to control at least one of a height and a posture of a work machine (2) connected to the work vehicle, is provided. The lifting mechanism is controllable of at least one of the height and the posture by using a hydraulic drive (15). The work vehicle includes an oil-temperature acquiring part (12) configured to acquire an oil temperature to be used for the hydraulic drive, a maximum oil amount setting part (21) configured to set a maximum oil amount according to the oil temperature acquired by the oil-temperature acquiring part, the maximum oil amount being a maximum value of a supply amount of oil used for driving the hydraulic drive, and a hydraulic drive controller (22) configured to control the hydraulic drive below the maximum oil amount set by the maximum oil amount setting part.

    WORKING VEHICLE
    3.
    发明公开
    WORKING VEHICLE 审中-公开

    公开(公告)号：EP3832166A1

    公开(公告)日：2021-06-09

    申请号：EP20209666.5

    申请日：2020-11-25

    申请人： KUBOTA CORPORATION

    发明人： AZUMA, Hitoshi ,  YAMAGUCHI, Tetsuo ,  OHARA, Shinji

    IPC分类号： F16H47/04 ,  F16H61/04 ,  B60K23/08

    摘要： A working vehicle (1) includes a first hydraulic clutch (5fl) connected to the first traveling shaft (26), a second hydraulic clutch (5f2) connected to the first traveling shaft (26) separately from the first hydraulic clutch (5fl), a first gear mechanism (28) to transmit, to a second traveling shaft (27), power from the first hydraulic clutch (5fl) when the first hydraulic clutch (5fl) is engaged and not to transmit, to the second traveling shaft (27), power from the first hydraulic clutch (5fl) when the first hydraulic clutch (5fl) is disengaged, and a second gear mechanism (29) to transmit, to the second traveling shaft (27), power from the second hydraulic clutch (5f2) when the second hydraulic clutch (5f2) is engaged and not to transmit, to the second traveling shaft (27), power from the second hydraulic clutch (5f2) when the second hydraulic clutch (5f2) is disengaged.

    WORK VEHICLE
    9.
    发明公开
    WORK VEHICLE 审中-公开

    公开(公告)号：EP3569897A1

    公开(公告)日：2019-11-20

    申请号：EP19174421.8

    申请日：2019-05-14

    申请人： KUBOTA CORPORATION

    发明人： YAMAGUCHI, Tetsuo ,  KUROSHITA, Yoshihiko ,  AZUMA, Hitoshi ,  KONO, Michita ,  OHARA, Shinji

    IPC分类号： F16H61/08 ,  F16H61/04

    摘要： [Problem] To provide a work vehicle that alleviates a shock that may occur during a speed change by circumventing stalling of a motor caused by a speed increase in a speed change apparatus and also circumventing over-rotation of the motor caused by a speed decrease in the speed change apparatus.
    [Means for Solving the Problem] A work vehicle according to the present invention includes a rotationally driven motor; a traveling vehicle body on which the motor is mounted; a travel apparatus that is provided to the traveling vehicle body and is also driven by drive power from the motor; a work apparatus that performs work on a farm field; a speed change apparatus that changes the speed of drive power that is input from the motor and transmits the drive power; a speed change operation tool that includes a plurality of speed change stages and is also capable of speed change operation of the speed change apparatus by way of a human operation; a speed change controller that, when the number of speed change stages is changed over a plurality of stages based on human operation of the speed change operation tool, outputs to the speed change apparatus a speed change command for each predefined number of stages and is also capable of outputting the speed change command for each defined speed change interval; and an operation mechanism that enables adjustment of the speed change interval.