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    STRAINER DEVICE
    1.
    发明申请
    STRAINER DEVICE 审中-公开

    公开(公告)号：US20170296947A1

    公开(公告)日：2017-10-19

    申请号：US15513586

    申请日：2014-09-30

    Applicant: Komatsu Ltd.

    Inventor： Hiroyuki Chikugo ,  Shuuji Hori ,  Yuta Baba

    IPC: B01D35/153 ,  B01D35/00 ,  B01D29/11 ,  F15B21/04 ,  F15B1/26

    CPC classification number: B01D35/153 ,  B01D29/114 ,  B01D35/005 ,  B01D35/0276 ,  B01D36/001 ,  B01D2201/167 ,  B01D2201/291 ,  F01M2001/1085 ,  F15B1/26 ,  F15B21/041

    Abstract: A strainer device includes a strainer element; a first lid member that covers an upper opening of the strainer element; a second lid member that covers a lower opening of the strainer element and has a fitting hole in a portion surrounded by the strainer element; a delivery pipe protruding upward inside a hydraulic oil tank in a state in which the delivery pipe is fitted into the fitting hole of the second lid member; and a check valve arranged at the first lid member. The check valve includes a valve main body having a valve passage whose one end opens to the internal space of the strainer element and whose other end opens to inside of the hydraulic oil tank; and a valve body which is arranged to be able to move in a vertical direction with respect to a valve seat provided in the valve passage.

    STROKE DETECTION DEVICE
    2.
    发明申请
    STROKE DETECTION DEVICE 审中-公开

    公开(公告)号：US20170152965A1

    公开(公告)日：2017-06-01

    申请号：US15322214

    申请日：2014-06-30

    Applicant: Komatsu Ltd.

    Inventor： Daigoh Fujii ,  Shuuji Hori ,  Masato Kageyama

    IPC: F16K37/00 ,  G01B7/00

    CPC classification number: F16K37/0041 ,  F15B2013/0409 ,  F16K3/24 ,  F16K11/07 ,  F16K37/0033 ,  G01B7/003 ,  G01B7/046

    Abstract: A stroke detection device for detecting, along a longitudinal direction, a stroke amount of a spool arranged in a valve main body. The stroke detection device includes: a device main body attached to the valve main body; a detection rod extending along the longitudinal direction of the spool, and movably arranged along the longitudinal direction inside the device main body, in a position where a tip end portion faces an end surface of the spool; a stroke detection unit configured to output a detection signal according to the stroke amount of the detection rod with respect to the device main body; and an attracting unit arranged in the tip end portion of the detection rod, the attracting unit being attracted to the end surface of the spool by magnetic force.

    HYDRAULIC CYLINDER SPOOL VALVE DEVICE
    6.
    发明申请
    HYDRAULIC CYLINDER SPOOL VALVE DEVICE 审中-公开

    公开(公告)号：US20190003497A1

    公开(公告)日：2019-01-03

    申请号：US16069207

    申请日：2016-01-29

    Applicant: Komatsu Ltd.

    Inventor： Shuuji Hori ,  Masato Kageyama ,  Mutsumi Ono ,  Hiroyuki Chikugo ,  Akira Hasebe ,  Junichi Fukushima ,  Shunsuke Koike

    IPC: F15B13/04 ,  F15B11/10 ,  F15B13/043 ,  F15B13/042 ,  F16K31/06

    Abstract: A hydraulic cylinder spool valve device, which extends and retracts a cylinder rod of a hydraulic cylinder, includes: a first spool valve having a first dead band and a first opening characteristic; a second spool valve having a second dead band and a second opening characteristic; and a controller performing communication with the hydraulic cylinder by using the first spool valve and positioning the second spool of the second spool valve within the second dead band and performing communication with the hydraulic cylinder by using the second spool valve and positioning the first spool of the first spool valve within the first dead band, and adjusting a characteristic of a switching dead band between the first opening characteristic and the second opening characteristic.

    Steering device for wheel loader
    10.
    发明授权
    Steering device for wheel loader 有权
    轮式装载机转向装置

    公开(公告)号：US09309646B2

    公开(公告)日：2016-04-12

    申请号：US14726658

    申请日：2015-06-01

    Applicant: KOMATSU LTD.

    Inventor： Kota Imanishi ,  Hiroyuki Chikugo ,  Shuuji Hori ,  Mitsumasa Akashi ,  Akira Hasebe ,  Shuki Akushichi ,  Nobumasa Takamatsu

    IPC: B62D5/20 ,  E02F9/22 ,  B62D1/22 ,  B62D5/09 ,  B62D12/00 ,  E02F9/08 ,  B62D5/07 ,  B62D5/28 ,  B62D5/12 ,  B62D5/18

    CPC classification number: 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

    Abstract: A steering device for a wheel loader includes a handle for steering, a lever for steering, a steering cylinder, a steering valve that controls a direction of operating fluid to the steering cylinder, and a pump that supplies operating fluid to the steering cylinder via the steering valve. The steering device further includes a handle control valve that controls the supply direction of the operating fluid according the handle, a lever electromagnetic control valve that controls the supply direction of operating fluid according to the lever, and a handle prioritization valve that shuts off a pilot hydraulic pressure supplied from the lever electromagnetic control valve to the steering valve according to a pressure produced by operating fluid flowing through the handle control valve when the handle is operated. The handle prioritization valve includes a switching valve and a priority control valve switchable between a handle stage and a lever stage.

    Abstract translation: 一种用于轮式装载机的转向装置，包括用于转向的手柄，用于转向的转向杆，转向缸，控制向转向缸工作流体的方向的转向阀，以及经由该转向缸将工作流体供给到转向缸的泵 转向阀 所述转向装置还包括手柄控制阀，所述手柄控制阀根据所述手柄控制所述工作流体的供给方向，杠杆电磁控制阀，其根据所述杠杆控制工作流体的供给方向;以及手柄优先阀， 根据在手柄操作时流经手柄控制阀的工作流体产生的压力，从杠杆电磁控制阀供给到转向阀的液压。 手柄优先阀包括切换阀和可在手柄级和杠杆级之间切换的优先控制阀。

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