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公开(公告)号：US11035099B2
公开(公告)日：2021-06-15
申请号：US16085402
申请日：2017-09-08
发明人： Shota Kimura , Tadashi Osaka , Hidekazu Moriki , Kazuo Ishida , Noritaka Itou
摘要： A wheel loader includes a working device, a lift cylinder 152 which is a hydraulic actuator that drives the working device, a hydraulic pump 220 that supplies hydraulic oil to the lift cylinder 152, a lift cylinder bottom pressure detector 252 that detects a pressure of the lift cylinder 152, a control valve 221 that controls the amount of hydraulic oil to be supplied from the hydraulic pump 220 to the lift cylinder 152, a vehicle acceleration detector 254 that detects a vehicle acceleration in a longitudinal direction, and a control device 240. The control device 240 determines whether the working device has started excavation, or not, based on the lift cylinder bottom pressure detected by the lift cylinder bottom pressure detector 252 and the vehicle acceleration detected by the vehicle acceleration detector 254.
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公开(公告)号：US11142887B2
公开(公告)日：2021-10-12
申请号：US16644288
申请日：2018-07-23
发明人： Akira Watanabe , Ken Takeuchi , Tadashi Osaka
摘要： An engine cooling system (22) includes an engine (11), an engine cooling pipe line (23), an engine water pump (24) and an engine radiator (25). An electricity storage device cooling system (27) includes an electricity storage device (19), an electricity storage device cooling pipe line (28), an electricity storage device water pump (29) and an electricity storage device radiator (31). Different heat-transfer media (engine cooling water and electricity storage device cooling water) flow respectively in the engine cooling system (22) and the electricity storage device cooling system (27). Further, a heating heat exchanger (32) is provided in the halfway of the engine cooling pipe line (23) and in the halfway of the electricity storage device cooling pipe line (28) for performing heat exchange between the engine cooling water and the electricity storage device cooling water.
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公开(公告)号：US10450723B2
公开(公告)日：2019-10-22
申请号：US15774689
申请日：2016-10-31
发明人： Tadashi Osaka , Ken Takeuchi , Seiji Ishida
IPC分类号： B60K6/28 , E02F9/20 , H01M10/625 , H01M10/615 , H01M10/633 , H01M10/6563 , H01M10/6568 , H01M10/613 , E02F9/08 , E02F9/22 , B60L50/15 , B60L50/16 , B60K1/00
摘要： Hybrid construction machinery has a power storage apparatus that can be warmed up quickly and has a lengthened life. The machinery includes an electric motor assisting a prime mover in power and generating electric power. The power storage apparatus transfers electric power to and from the electric motor. A warm-up circuit circulates a warming medium in the vicinity of the power storage apparatus, and a control device controls circulation of the warming medium. On-board equipment state detection units detect on-board equipment states to estimate an output request for the power storage apparatus from the on-board equipment. Circulation of the warming medium is controlled based on a temperature of the power storage apparatus and a determination temperature for determining whether to circulate the warming medium in the warm-up circuit. The control device further varies the determination temperature according to a result of detection by the on-board equipment state detection units.
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公开(公告)号：US10450722B2
公开(公告)日：2019-10-22
申请号：US15778301
申请日：2016-11-11
IPC分类号： E02F9/20 , B66C23/86 , E02F9/22 , F15B11/04 , E02F3/32 , E02F3/42 , E02F3/43 , E02F9/12 , E02F9/26 , F15B15/18 , F15B15/28 , B66C13/18 , B66C23/82 , F15B13/02
摘要： A control system for a construction machine stops an upper swing structure at a desired swing stop angle. A main controller sets a swing stop target angle at which an upper swing structure is to be stopped. A swing stoppability determination section reads an angle signal of the upper swing structure with respect to an undercarriage and an angle of a work implement, and determines whether the swing of the upper swing structure can be stopped at the swing stop target angle. A work implement is controlled in such a manner that an extension action of the work implement in a swing radial direction is prohibited or a contraction action of the work implement in the swing radial direction is executed in response to a signal that indicates whether the swing can be stopped and that is determined by the swing stoppability determination section.
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公开(公告)号：US10107341B2
公开(公告)日：2018-10-23
申请号：US15451455
申请日：2017-03-07
发明人： Naoki Fukuda , Tadashi Osaka , Ryuji Kouno , Masatsugu Arai , Takanobu Ikari , Takaaki Tanaka
IPC分类号： F16D48/06
摘要： Provided is a clutch control device for a work machine capable of controlling a fan to an appropriate rotational speed. In the clutch control device for the work machine, a controller includes a target fan rotational speed calculation module that calculates a target fan rotational speed for the fan, a clutch characteristic curve storage module that stores a plurality of clutch characteristic curves, a clutch command calculation module that outputs with reference to a clutch characteristic curve a first clutch control signal corresponding to the target fan rotational speed, a feedback control module that output a second clutch control signal based on the difference between the target fan rotational speed and an actual fan rotational speed, and an adder that adds the first clutch control signal and the second clutch control signal to output a third clutch control signal.
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公开(公告)号：US11124075B2
公开(公告)日：2021-09-21
申请号：US16631891
申请日：2018-06-19
发明人： Satoru Kaneko , Shinji Sugimoto , Takayoshi Nakamura , Tadashi Osaka , Masatsugu Arai , Naoki Fukuda
摘要： A dump truck 100 including: an engine 1; a generator 10 driven by the engine 1; and a pair of driving wheels 3L and 3R arranged to the left and right of a vehicle body frame 7 includes: a traveling electric motor 12L including a plurality of electric motors 12La, 12Lb, and 12Lc that are coupled to the driving wheel 3L and simultaneously drive the driving wheel 3L; and a traveling electric motor 12R including a plurality of electric motors 12Ra, 12Rb, and 12Rc that are coupled to the driving wheel 3R and simultaneously drive the driving wheel 3R. Thereby, drive systems corresponding to loads of dump trucks or the like can be configured using identical components.
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