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8 条记录 (耗时 0.014 秒)

    STEERING DEVICE OF WHEEL LOADER
    1.
    发明公开
    STEERING DEVICE OF WHEEL LOADER 有权
    LENKVORRICHTUNGFÜREINEN RADLADER

    公开(公告)号：EP2774827A1

    公开(公告)日：2014-09-10

    申请号：EP12873379.7

    申请日：2012-04-19

    申请人： Komatsu Ltd.

    发明人： IMANISHI, Kota ,  CHIKUGO, Hiroyuki ,  HORI, Shuuji ,  AKASHI, Mitsumasa ,  HASEBE, Akira ,  AKUSHICHI, Shuki ,  TAKAMATSU, Nobumasa

    IPC分类号： B62D5/28 ,  B62D5/07 ,  E02F9/20

    CPC分类号： E02F9/225 ,  B62D1/22 ,  B62D5/075 ,  B62D5/09 ,  B62D5/091 ,  B62D5/12 ,  B62D5/18 ,  B62D5/20 ,  B62D5/28 ,  B62D12/00 ,  E02F9/0841 ,  E02F9/2285 ,  E02F9/2296

    摘要： A mechanism for prioritizing a handle operation is achieved with a simple configuration and the mechanism is actuated in a stable manner in a wheel loader in which steering can be operated by a handle operation and a lever operation. The steering device includes a handle (21), a joystick (22), steering cylinders (23L, 23R), a steering valve (25), a pump (30), an orbit roll (26) for supplying pilot pressure to the steering valve (25) according to a handle operation, a lever electromagnetic control valve (27) for supplying pilot pressure to the steering valve (25) according to a joystick operation, and a handle prioritization valve (28). The handle prioritization valve (28) shuts off pilot hydraulic pressure supplied to the steering valve (25) from the lever electromagnetic control valve (27) due to a differential pressure in a hydraulic circuit that is produced by operating fluid flowing through the orbit roll (26) during a handle operation.

    摘要翻译： 通过简单的结构实现了把手操作优先化的机构，并且机构以稳定的方式被驱动到轮式装载机中，其中转向可以通过手柄操作和杠杆操作来操作。 转向装置包括手柄（21），操纵杆（22），转向油缸（23L，23R），转向阀（25），泵（30），用于向转向装置提供先导压力的轨道辊 根据手柄操作的阀门（25），用于根据操纵杆操作向转向阀（25）提供先导压力的杠杆电磁控制阀（27）和手柄优先阀（28）。 手柄优先阀（28）由于通过操作流过轨道辊的流体而产生的液压回路中的压力差，从杠杆电磁控制阀（27）关闭供给到转向阀（25）的先导液压（ 26）。

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

    公开(公告)号：EP3406505A1

    公开(公告)日：2018-11-28

    申请号：EP17806610.6

    申请日：2017-05-29

    申请人： Komatsu Ltd.

    发明人： TAKENAKA, Yuita ,  NAKABAYASHI, Masanobu ,  IKARI, Masanori

    IPC分类号： B62D5/28 ,  B62D1/12 ,  B62D5/04 ,  B62D5/09

    CPC分类号： B62D1/12 ,  B62D5/04 ,  B62D5/09 ,  B62D5/28

    摘要： A wheel loader (1) is an articulated type in which a front frame (11) and a rear frame (12) are linked. The wheel loader (1) comprises steering cylinders (21 and 22), a pilot valve (42), a joystick lever (24), and a link mechanism (90). The steering cylinders (21 and 22) are driven by hydraulic pressure to vary the steering angle (θs) of the front frame (11) with respect to the rear frame (12). The pilot valve (42) is configured to control the flow of fluid supplied to the steering cylinders (21 and 22). The joystick lever (24) is disposed in a cab (5) provided on the rear frame (12) and is operated by an operator. The link mechanism (90) is disposed on the lower side of the cab (5) and is configured to transmit the operation of the joystick lever (24) to the pilot valve (42).

    WORK VEHICLE AND CONTROL METHOD FOR WORK VEHICLE
    4.
    发明公开
    WORK VEHICLE AND CONTROL METHOD FOR WORK VEHICLE 审中-公开

    公开(公告)号：EP3412538A1

    公开(公告)日：2018-12-12

    申请号：EP17843744.8

    申请日：2017-08-25

    申请人： Komatsu Ltd.

    发明人： TAKENAKA, Yuita ,  IKARI, Masanori ,  NAKABAYASHI, Masanobu

    IPC分类号： B62D5/28 ,  B62D5/065 ,  B62D6/00 ,  E02F9/16 ,  E02F9/22 ,  E02F9/26 ,  B62D113/00 ,  B62D115/00 ,  B62D117/00 ,  B62D119/00

    CPC分类号： B62D5/065 ,  B62D5/28 ,  B62D6/00 ,  E02F9/16 ,  E02F9/22 ,  E02F9/26

    摘要： A wheel loader (1) comprises steering cylinders (21 and 22), a steering pump (31a), a joystick lever (24), a pilot valve (42), an angular velocity corresponding value sensing unit (27), a notification component (29), and a controller (28). The pilot valve (42) controls the flow of fluid supplied from the steering pump (31a) to the steering cylinders (21 and 22) on the basis of how much the joystick lever (24) is operated. The angular velocity corresponding value sensing unit (27) senses a corresponding value that corresponds to the steering angular velocity that is changed on the basis of the fluid flow rate. The notification component (29) notifies the operator that the corresponding value has reached a threshold value preset on the basis of the upper limit of the steering angular velocity. When the controller (28) senses that the corresponding value has reached the threshold value, the controller (28) makes the notification component (29) give a notification.

    WORK VEHICLE AND WORK VEHICLE CONTROL METHOD
    5.
    发明公开
    WORK VEHICLE AND WORK VEHICLE CONTROL METHOD 审中-公开

    公开(公告)号：EP3412536A1

    公开(公告)日：2018-12-12

    申请号：EP17806613.0

    申请日：2017-05-29

    申请人： Komatsu Ltd.

    发明人： TAKENAKA, Yuita ,  NAKABAYASHI, Masanobu ,  IKARI, Masanori

    IPC分类号： B62D5/28 ,  B62D5/09 ,  B62D6/00 ,  B62D12/00

    CPC分类号： B62D5/09 ,  B62D5/28 ,  B62D6/00 ,  B62D12/00

    摘要： Steering cylinders (21 and 22) in a wheel loader (1) are driven by hydraulic pressure and perform an articulation in which the steering angle θs of a front frame (11) is changed with respect to a rear frame (12) in response to the operation of a joystick lever (24). A pilot valve (42) is linked to the joystick lever (24) and controls the flow of fluid supplied to the steering cylinders (21 and 22) so that the steering angle θs matches the rotation angle θin. A force imparting component (27) imparts an assisting force or a counterforce to the operation of the joystick lever (24). A controller (28) controls the force imparting component (27) so as to generate resistance against the operation of the joystick lever on the basis of a deviation angle ±θ7, which is an example of the start timing of the articulation.

    WORK VEHICLE AND WORK VEHICLE CONTROL METHOD
    6.
    发明公开
    WORK VEHICLE AND WORK VEHICLE CONTROL METHOD 有权
    工作车辆和工作车辆控制方法

    公开(公告)号：EP3254931A1

    公开(公告)日：2017-12-13

    申请号：EP16859845.6

    申请日：2016-10-26

    申请人： Komatsu Ltd.

    发明人： TAKENAKA, Yuita ,  NAKABAYASHI, Masanobu ,  IKARI, Masanori

    IPC分类号： B62D5/28 ,  B62D5/065 ,  B62D5/083 ,  B62D5/087 ,  B62D5/10

    CPC分类号： B62D5/065 ,  B62D1/12 ,  B62D3/04 ,  B62D3/14 ,  B62D5/006 ,  B62D5/0463 ,  B62D5/083 ,  B62D5/0832 ,  B62D5/087 ,  B62D5/09 ,  B62D5/091 ,  B62D5/10 ,  B62D5/28 ,  B62D6/008 ,  B62D12/00

    摘要： A wheel loader (1) is an articulated type in which a front frame (11) and a rear frame (12) are linked, and comprises a joystick lever (24), a force imparting component (27), and a controller (28). The joystick lever (24) is moved by an operator to the right or left side to change the steering angle (θs) of the front frame (11) with respect to the rear frame (12). The force imparting component (27) imparts an assist force or a counterforce to the operation of the joystick lever (24) by the operator. The controller (28) controls the force imparting component (27) so that the operating force required to move the joystick lever (24) to the left side is different from the operating force required to move the joystick lever (24) to the right side.

    摘要翻译： 的轮式装载机（1）是一个铰接的类型，其中的前框架（11）和后框架（12）被连接，并且包括一个操纵杆（24），力施加构件（27），以及控制器（28 ）。 操作杆（24）通过操作者向右或左侧移动，以改变前框架（11）相对于后框架（12）的转向角度（θs）。 施力部件（27）向操作员对操纵杆（24）的操作施加辅助力或反作用力。 该控制器（28）控制赋予组件（27），使得所述操纵杆（24）移动到左侧所需要的操作力是从到操纵杆（24）移动到右侧所需的操作力不同的力 。