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公开(公告)号：US10221871B2
公开(公告)日：2019-03-05
申请号：US15422152
申请日：2017-02-01
发明人： Shinya Imura , Hidetoshi Satake , Kouji Ishikawa , Seiji Hijikata , Takatoshi Ooki , Shinji Nishikawa
摘要： The Construction machinery includes at least two actuators, a main pump that generates hydraulic energy for driving the actuators, control valves disposed between the main pump and the actuators, a hydraulic pump motor driven by the generator motor that generates energy to be added to the hydraulic energy, and a controller that reduces hydraulic energy generated by the main pump when the hydraulic pump motor driven by the generator-motor generates energy. The construction machinery further comprises changeover valves that selectively change a location at which the energy from the hydraulic pump motor driven by the generator-motor is to be added according to the actuators. The controller changes a reduction rate of the hydraulic energy generated by the main pump depending on a specific actuator to which the energy is to be added.
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公开(公告)号：US10006472B2
公开(公告)日：2018-06-26
申请号：US14431482
申请日：2013-10-15
CPC分类号： F15B11/04 , E02F9/123 , E02F9/20 , E02F9/2095 , E02F9/22 , E02F9/2203 , E02F9/2217 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/162 , F15B11/165 , F15B13/06 , F15B13/14 , F15B2015/206 , F15B2211/205 , F15B2211/20515 , F15B2211/7058 , F15B2211/7135 , F15B2211/75 , F15B2211/781
摘要： A construction machine includes: a swing structure (50); a hydraulic pump (1); a hydraulic motor (3) for driving the swing structure (50) using hydraulic fluid from the hydraulic pump (1); an electric motor (14) for driving the swing structure (50) with or without the aid of the hydraulic motor (3); and a hydraulic actuator (16) driven by the hydraulic fluid from the hydraulic pump 1, the hydraulic actuator can be operated together with the swing structure (50). When the swing structure (50) is operated together with the hydraulic actuator (16), only the electric motor (14) is used to swing the swing structure (50).
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公开(公告)号：US09863123B2
公开(公告)日：2018-01-09
申请号：US14915301
申请日：2015-01-06
发明人： Tomoaki Kaneta , Kouji Ishikawa , Hidetoshi Satake , Shinya Imura
CPC分类号： E02F9/123 , E02F3/32 , E02F3/435 , E02F9/265 , F15B11/08 , F15B13/0401 , F15B21/08 , F15B2211/205 , F15B2211/6313 , F15B2211/7053 , F15B2211/7058 , F15B2211/7128
摘要： A construction machine is characterized by including: a track structure 10; a swing structure 20 provided on the track structure 10 in a swingable manner; swing motors 25, 27 that drive and swing the swing structure; a boom 31 connected to the swing structure 20; a boom cylinder 32 that moves the boom 31 vertically; a swing operation system 72 that instructs a swing operation of the swing structure 20; a boom operation system 78 that instructs a vertical movement of the boom 31; a detector 74d that detects a bottom pressure of the boom cylinder 32; and a controller 80 that reduces swing speed of the swing structure 20 according to a signal from the detector 74d with respect to a reference swing speed according to a signal of the swing operation, while signals of the swing operation and a boom raising operation are being inputted. This ensures that a load acting on the boom can be felt on the basis of motion of a front work implement, and, on the other hand, the front work implement can be operated along a locus according to operation without being affected by the load on the boom.
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公开(公告)号：US09951797B2
公开(公告)日：2018-04-24
申请号：US14436395
申请日：2013-10-17
发明人： Shinya Imura , Kouji Ishikawa , Hidetoshi Satake , Tomoaki Kaneta
CPC分类号： F15B11/0423 , E02F9/2225 , E02F9/2235 , E02F9/2285 , E02F9/2292 , E02F9/2296 , E02F9/24 , E02F9/268 , F04B49/22 , F15B11/08 , F15B13/02 , F15B2211/20546 , F15B2211/3116 , F15B2211/40515 , F15B2211/41581 , F15B2211/45 , F15B2211/6346 , F15B2211/665 , F15B2211/6652 , F15B2211/6658
摘要： Provided is a work machine including: a variable-displacement pump 2; an actuator 5 driven by a hydraulic fluid delivered from the pump 2; a flow control valve 4 of an open-center type that controls a flow rate of the hydraulic fluid supplied to the actuator 5; a bleed-off line 8a connecting the actuator flow control valve 4 to a tank 6; a bleed-off flow control valve 8 disposed in the bleed-off line 8a; an operating device 3 that specifies operation of the actuator 5; a bleed-off control device 14 that controls a degree of opening of the bleed-off flow control valve 8 in accordance with an amount of manipulation of the operating device 3; and a pump control device 15 that controls, in accordance with the degree of opening of the bleed-off flow control valve 8, a pump flow rate by correcting a reference pump flow rate that is based on the amount of manipulation of the operating device 3. The work machine with this configuration can save energy while at the same time inhibiting an occurrence of a sense of strangeness or discomfort in particular operation.
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公开(公告)号：US10006473B2
公开(公告)日：2018-06-26
申请号：US14729364
申请日：2015-06-03
IPC分类号： F15B11/042 , E02F9/12 , E02F9/20 , E02F9/22 , F15B11/08
CPC分类号： F15B11/042 , E02F9/123 , E02F9/2095 , E02F9/2203 , E02F9/2228 , E02F9/2282 , E02F9/2296 , F15B11/08 , F15B2211/20515 , F15B2211/30525 , F15B2211/3059 , F15B2211/6306 , F15B2211/6346 , F15B2211/6355 , F15B2211/6654 , F15B2211/7058 , F15B2211/7135 , F15B2211/75
摘要： This invention provides a hybrid construction machine including a swing structure, a hydraulic pump, a hydraulic swing motor driving the swing structure using hydraulic fluid from the hydraulic pump, an electric swing motor driving the swing structure in conjunction with the hydraulic swing motor, a boom cylinder operated simultaneously with the swing structure at times and driven by the hydraulic fluid from the hydraulic pump, a first directional control valve controlling flow of the hydraulic fluid supplied from the hydraulic pump to the hydraulic swing motor, a second directional control valve controlling the flow of the hydraulic fluid returning from the hydraulic swing motor, and a controller and solenoid pressure reducing valves which prevent operation of the second directional control valve when the boom cylinder is operated simultaneously with the swing structure.
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公开(公告)号：US09777463B2
公开(公告)日：2017-10-03
申请号：US14767423
申请日：2014-08-20
发明人： Shiho Izumi , Shinya Imura , Hidetoshi Satake , Kouji Ishikawa , Tomoaki Kaneta , Hiroaki Amano , Shinji Nishikawa
CPC分类号： E02F9/2235 , B60L1/00 , E02F9/123 , E02F9/2004 , E02F9/2075 , E02F9/2091 , E02F9/2095 , E02F9/2267 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F04B49/002 , H02P6/08 , Y02T10/642
摘要： A construction machine, comprising a hydraulic pump, a swing hydraulic motor, a swing electric motor, a delivery capacity regulating device, and a control unit which controls the driving/braking of the swing structure, is configured to comprise an operation amount detection device for detecting the operation amount of the swing control lever and a speed detection device for detecting the speed of the swing electric motor. The control unit includes a hydraulic pump output reduction control unit which takes in an operation amount signal representing the operation amount of the swing control lever detected by the operation amount detection device and a speed signal representing the speed of the swing electric motor detected by the speed detection device and controls the delivery capacity regulating device by calculating a reduction rate of the output of the hydraulic pump based on the detection signals.
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公开(公告)号：US09725878B2
公开(公告)日：2017-08-08
申请号：US14915304
申请日：2014-09-18
发明人： Hiroaki Amano , Kouji Ishikawa , Hidetoshi Satake , Shinya Imura , Shinji Nishikawa , Tomoaki Kaneta , Shiho Izumi
CPC分类号： E02F9/123 , B60Y2200/416 , E02F3/32 , E02F9/20 , E02F9/2004 , E02F9/2095 , E02F9/2246
摘要： Provided is a hybrid-type construction machine including a swing device of the hydraulic-electric combined swing type and by which, in a work for which accurate swing operability is demanded like, for example, a crane work, a swing body is driven alone by the electric motor.The hybrid-type construction machine includes an engine, a hydraulic pump driven by the engine, a swing body, an electric motor for driving the swing body, and a hydraulic motor driven by the hydraulic pump for driving the swing body. The swing body is swung by simultaneous drive by the electric motor and the hydraulic motor. The hybrid-type construction machine includes a control apparatus having a work mode changeover unit by which an operator changes over a mode in response to an aspect of a work and an electric alone swing controlling unit configured to control the swing body to be swung by the electric motor alone. When a work in which position accuracy is demanded is selected by the work mode changeover unit, the swing body is swung by the electric alone swing controlling unit.
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公开(公告)号：US20150300378A1
公开(公告)日：2015-10-22
申请号：US14441048
申请日：2013-11-05
发明人： Tsutomu Udagawa , Akira Nakayama , Ryohei Yamashita , Shiho Izumi , Manabu Edamura , Kouji Ishikawa , Hidetoshi Satake
IPC分类号： F15B11/028 , E02F9/22
CPC分类号： F15B11/028 , E02F3/32 , E02F9/22 , E02F9/2235 , E02F9/2285 , E02F9/2296 , F15B11/0423 , F15B2211/20546 , F15B2211/251 , F15B2211/30525 , F15B2211/3111 , F15B2211/365 , F15B2211/6309 , F15B2211/633 , F15B2211/6333 , F15B2211/6346 , F15B2211/6652 , F15B2211/6653 , F15B2211/6654
摘要： The energy efficiency is increased by reducing the throttle/relief loss in the delivery flow of the hydraulic pump caused by the bleed-off control, while also making it possible to control the delivery pressure of the hydraulic pump according to the operation amount of the control lever unit and improving the operational performance. A controller 6 includes a target pump pressure setting unit 32 which calculates a target pump delivery pressure which increases with the increase in an operation amount signal from an operation amount detector 20A/20B based on the operation amount signal and a pump flow rate upper limit setting unit 33 which calculates a pump flow rate upper limit which increases with the increase in the operation amount signal based on the operation amount signal. The tilt amount of the hydraulic pump 2 is controlled based on the target pump delivery pressure calculated by the target pump pressure setting unit 32, the pump flow rate upper limit calculated by the pump flow rate upper limit setting unit 33, and the delivery pressure of the hydraulic pump 2 detected by a pressure detector 21.
摘要翻译： 通过减少由排出控制引起的液压泵的输送流量中的节流/减压损失，能够提高能量效率，同时还可以根据控制的操作量来控制液压泵的输送压力 杠杆单元，提高操作性能。 控制器6包括目标泵压力设定单元32，该目标泵压力设定单元32基于操作量信号和泵流量上限设定来计算随着来自操作量检测器20A / 20B的操作量信号的增加而增加的目标泵输送压力 单元33，其基于操作量信号计算随着操作量信号的增加而增加的泵流量上限。 基于由目标泵压力设定单元32计算出的目标泵输送压力，由泵流量上限设定单元33计算的泵流量上限，以及泵流量上限设定单元33的输出压力来控制液压泵2的倾斜量 液压泵2由压力检测器21检测。
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公开(公告)号：US10253479B2
公开(公告)日：2019-04-09
申请号：US14915311
申请日：2015-01-09
发明人： Tomoaki Kaneta , Kouji Ishikawa , Hidetoshi Satake , Shinya Imura
摘要： When option attachment has not been attached, a reserve flow/direction control valve 8 is made to operate as a center bypass cut valve. When an option attachment has been attached, switching control is performed. In the switching control, when the option attachment is not used, the reserve flow/direction control valve 8 is made to operate as a center bypass cut valve for adjusting composite opening area of a center bypass and thereby controlling the flow rate of hydraulic fluid flowing into an actuator. When the option attachment is used, the reserve flow/direction control valve 8 is made to operate so as to supply the hydraulic fluid to an option hydraulic actuator 14.
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公开(公告)号：US09822803B2
公开(公告)日：2017-11-21
申请号：US14768570
申请日：2014-08-28
发明人： Shinya Imura , Kouji Ishikawa , Hidetoshi Satake , Shinji Nishikawa , Tomoaki Kaneta , Shiho Izumi
CPC分类号： F15B11/20 , E02F9/123 , E02F9/2095 , F15B11/04 , F15B13/0846 , F15B2211/6651 , F15B2211/75 , F15B2211/78
摘要： A work machine is adapted for reduced fuel consumption in regions where swinging by a hydraulic motor is prone to deterioration in efficiency, such as when the operating stroke of the swinging is small. The work machine includes an engine, a hydraulic pump, a swing structure, an electric motor for driving the swing structure, and a hydraulic motor for driving the swing structure, the hydraulic motor being driven by the hydraulic pump, and includes a swing control lever device that commands the swing structure to be driven. A control device operates in either an electric swing mode in which the swing structure is driven mainly by torque of the electric motor or a hydraulic swing mode in which the swing structure is driven mainly by torque of the hydraulic motor, depending on an operating stroke of the control lever device and/or a swing speed of the swing structure.
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