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Patent Agency Ranking
公开(公告)号：US11293417B2
公开(公告)日：2022-04-05
申请号：US16484921
申请日：2018-06-04
Applicant: KOMATSU LTD.
Inventor： Mutsumi Ono , Mitsuru Ohshiro , Naoya Sodeyama , Jun Nabata , Shuuji Hori
IPC: F04B1/324 , F04B1/2078
Abstract: A variable displacement hydraulic pump or motor includes: a swash plate; a lever supported by a housing and configured to rotate in conjunction of tilting of the swash plate; and a sensor configured to detect a displacement amount of the lever.
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公开(公告)号：US20190093684A1
公开(公告)日：2019-03-28
申请号：US15526821
申请日：2017-01-12
Applicant: Komatsu Ltd.
Inventor： Mitsuru Ohshiro , Kenichi Ogasawara , Masahiro Hirano
Abstract: A fan drive system includes a hydraulic pump, a hydraulic motor that rotates a fan on the basis of hydraulic oil supplied from the hydraulic pump, a data acquisition unit that acquires an actual fan speed of the fan, a target amount determination unit that determines a target fan speed of the fan on the basis of a state of an object to be cooled of the fan, and an estimating unit that estimates a state of the hydraulic pump or a state of the hydraulic motor on the basis of a change of a feedback amount that indicates a difference between the target fan speed and the actual fan speed.
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公开(公告)号：US20200003191A1
公开(公告)日：2020-01-02
申请号：US16484921
申请日：2018-06-04
Applicant: KOMATSU LTD.
Inventor： Mutsumi Ono , Mitsuru Ohshiro , Naoya Sodeyama , Jun Nabata , Shuuji Hori
IPC: F04B1/32
Abstract: A variable displacement hydraulic pump or motor (10) includes: a swash plate (13); a lever (22) supported by a housing (21) and configured to rotate in conjunction of tilting of the swash plate (13); and a sensor (23) configured to detect a displacement amount of the lever (22).
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公开(公告)号：US10473127B2
公开(公告)日：2019-11-12
申请号：US15526821
申请日：2017-01-12
Applicant: Komatsu Ltd.
Inventor： Mitsuru Ohshiro , Kenichi Ogasawara , Masahiro Hirano
Abstract: A fan drive system includes a hydraulic pump, a hydraulic motor that rotates a fan on the basis of hydraulic oil supplied from the hydraulic pump, a data acquisition unit that acquires an actual fan speed of the fan, a target amount determination unit that determines a target fan speed of the fan on the basis of a state of an object to be cooled of the fan, and an estimating unit that estimates a state of the hydraulic pump or a state of the hydraulic motor on the basis of a change of a feedback amount that indicates a difference between the target fan speed and the actual fan speed.
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公开(公告)号：US20140186196A1
公开(公告)日：2014-07-03
申请号：US13696984
申请日：2011-11-17
Applicant: Komatsu Ltd.
Inventor： Norihide Mizoguchi , Mitsuru Ohshiro , Takahiro Adachi
IPC: F04B27/08
CPC classification number: F04B1/2085 , F03C1/0644 , F03C1/0671 , F04B1/122 , F04B1/22 , F04B1/324 , F04B53/18
Abstract: In a variable displacement hydraulic pump/motor, a casing includes a tapered roller bearing supporting a rotating shaft near supports, the support has a sliding protruding portion in a spherical shape at a shaft portion, and a through oil path extending from the shaft portion to the sliding protruding portion, the support being fitted, at the shaft portion, in a mounting hole in the casing and being fitted, at the sliding protruding portion, in a sliding recessed portion in the swash plate to cover an opening of the through oil path, a communicating oil path is between a space in which a tapered roller of the tapered roller bearing is disposed and the mounting hole, and a lubrication groove constantly connecting the opening of the through oil path to an outside of a sliding contact area between the sliding protruding portion and the sliding recessed portion is between the sliding protruding portion and the sliding recessed portion.
Abstract translation: 在可变排量液压泵/电动机中，壳体包括在支撑件附近支撑旋转轴的圆锥滚子轴承，支撑件在轴部处具有球形的滑动突出部分，以及从轴部延伸到贯穿油路 所述滑动突出部分，所述支撑件在所述轴部处装配在所述壳体中的安装孔中，并且在所述滑动突出部处装配在所述斜盘中的滑动凹部中，以覆盖所述贯通油路的开口 在圆锥滚子轴承的锥形滚子与安装孔之间的连通油路之间连通的连通油路，以及将贯通油路的开度恒定地连接到滑动接触区域的外侧的润滑槽 突出部和滑动凹部在滑动突出部和滑动凹部之间。
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