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11. 发明申请

US20090199552A1 HYDRAULIC WORKING MACHINE 有权
标题翻译：液压工作机
公开(公告)号：US20090199552A1
公开(公告)日：2009-08-13
申请号：US12428203
申请日：2009-04-22
申请人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
发明人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
IPC分类号： F15B13/042
CPC分类号： F15B11/024 , E02F9/2203 , E02F9/2217 , E02F9/2235 , E02F9/2239 , E02F9/2285 , E02F9/2296 , F15B2211/20546 , F15B2211/20576 , F15B2211/3052 , F15B2211/3116 , F15B2211/3133 , F15B2211/31576 , F15B2211/31582 , F15B2211/329 , F15B2211/6313 , F15B2211/6316 , Y02P80/13
摘要： A hydraulic circuit for a hydraulic working machine is composed of a main pump 21, a boom cylinder 11 arranged for extension or contraction by pressure oil from the main pump 21, a directional control valve 22 for controlling flows of pressure oil to be fed from the main pump 21 to a bottom chamber 11a and rod chamber 12b of the boom cylinder 11, a control unit 23 for performing a change-over control of the directional control valve 22, a pilot pump 24, a jack-up selector valve 25 for controlling a flow of pressure oil delivered from the pilot pump 24, a flow control valve 26 connected on an upstream side of the directional control valve 22 to a meter-in port of the directional control valve 22 such that the flow control valve 26 can be changed over by the jack-up selector valve 25, and a center bypass selector valve 27 connected on a downstream side of the directional control valve 22 to a center bypass port of the directional control valve 22 such that the center bypass selector valve 27 can be changed over by the jack-up selector valve 25. The hydraulic circuit performs a change-over of the jack-up selector valve 25 in accordance with a bottom pressure on the boom cylinder 11.
摘要翻译：用于液压作业机的液压回路由主泵21，由主泵21的压力油而设置成伸缩的动臂缸11，用于控制从主泵21供给的压力油的流量的方向控制阀22 主泵21连接到动臂缸11的底室11a和杆室12b，用于执行方向控制阀22的转换控制的控制单元23，先导泵24，用于控制的自升式选择阀25 从先导泵24输送的压力油流，连接在方向控制阀22的上游侧的流量控制阀26到方向控制阀22的计量口，使得可以改变流量控制阀26 以及由方向控制阀22的下游侧连接到方向控制阀22的中心旁通口的中央旁通选择阀27，使得中心旁通选择阀valv e 27可以由升降选择阀25切换。液压回路根据悬臂液压缸11的底部压力进行自升式换向阀25的切换。

12. 发明授权

US07434394B2 Hydraulic drive device 有权
标题翻译：液压驱动装置
公开(公告)号：US07434394B2
公开(公告)日：2008-10-14
申请号：US10553414
申请日：2004-04-16
申请人： Kouji Ishikawa , Yusuke Kajita , Kazunori Nakamura , Genroku Sugiyama , Hideo Karasawa
发明人： Kouji Ishikawa , Yusuke Kajita , Kazunori Nakamura , Genroku Sugiyama , Hideo Karasawa
IPC分类号： F16D31/02 , F15B13/06
CPC分类号： E02F9/2235 , E02F9/2285 , E02F9/2296
摘要： To permit using hold-side pressure oil in a first hydraulic cylinder for the acceleration of a second hydraulic cylinder upon performing a combined operation of the first and second hydraulic cylinders, a hydraulic drive system is provided with a main hydraulic pump 21, a boom cylinder 6 and an arm cylinder 7, a directional control valve 23 for a boom and a directional control valve 24 for an arm, and a boom control device 25 and an arm control device 26. The hydraulic drive system is also provided with a pressure oil feed means for feeding pressure oil in a rod chamber 6b of the boom cylinder 6 to an upstream side of the directional control valve 24 for the arm when a bottom pressure of the arm cylinder 7 has increased to a high pressure equal to or higher than a predetermined pressure. This pressure oil feed means includes a flow combiner valve 44 arranged in a reservoir line 42 which can communicate to the rod chamber 6b of the boom cylinder 6. When the bottom pressure of the arm cylinder 7 is the predetermined pressure or higher, the flow combiner valve 44 maintains a communication line 40, which communicates the reservoir line 42 and the upstream side of the directional control valve 24 for the arm with each other, in a state that pressure oil can be fed to the upstream side of the directional control valve 24 for the arm.
摘要翻译：为了在执行第一和第二液压缸的组合操作时允许在第一液压缸中使用保持侧压力油来加速第二液压缸，液压驱动系统设置有主液压泵21，动臂缸悬臂气缸7，用于悬臂的方向控制阀23和用于臂的方向控制阀24，以及起重臂控制装置25和臂控制装置26。液压驱动系统还设置有压力油进给装置，用于当臂缸7的底部压力向臂的方向控制阀24的上游侧供给动臂缸6的杆室6b中的压力油时已经增加到等于或高于预定压力的高压。该压力供油装置包括设置在储存管路42中的流动组合器阀44，该储存管路42可与动臂缸6的杆室6b连通。当气缸7的底部压力为预定压力或更高压力时，组合阀44保持连通管路40，该连通管路40将储存管路42和臂的方向控制阀24的上游侧彼此连通，在压力油可以供给到用于臂的方向控制阀24的上游侧的状态下。

13. 发明申请

US20070028607A1 Hydraulic drive device 有权
标题翻译：液压驱动装置
公开(公告)号：US20070028607A1
公开(公告)日：2007-02-08
申请号：US10553414
申请日：2004-04-16
申请人： Kouji Ishikawa , Yusuke Kajita , Kazunori Nakamura , Genroku Sugiyama , Hideo Karasawa
发明人： Kouji Ishikawa , Yusuke Kajita , Kazunori Nakamura , Genroku Sugiyama , Hideo Karasawa
IPC分类号： F03C1/00
CPC分类号： E02F9/2235 , E02F9/2285 , E02F9/2296
摘要： To permit using hold-side pressure oil in a first hydraulic cylinder for the acceleration of a second hydraulic cylinder upon performing a combined operation of the first and second hydraulic cylinders, a hydraulic drive system is provided with a main hydraulic pump 21, a boom cylinder 6 and an arm cylinder 7, a directional control valve 23 for a boom and a directional control valve 24 for an arm, and a boom control device 25 and an arm control device 26. The hydraulic drive system is also provided with a pressure oil feed means for feeding pressure oil in a rod chamber 6b of the boom cylinder 6 to an upstream side of the directional control valve 24 for the arm when a bottom pressure of the arm cylinder 7 has increased to a high pressure equal to or higher than a predetermined pressure. This pressure oil feed means includes a flow combiner valve 44 arranged in a reservoir line 42 which can communicate to the rod chamber 6b of the boom cylinder 6. When the bottom pressure of the arm cylinder 7 is the predetermined pressure or higher, the flow combiner valve 44 maintains a communication line 40, which communicates the reservoir line 42 and the upstream side of the directional control valve 24 for the arm with each other, in a state that pressure oil can be fed to the upstream side of the directional control valve 24 for the arm.
摘要翻译：为了在执行第一和第二液压缸的组合操作时允许在第一液压缸中使用保持侧压力油来加速第二液压缸，液压驱动系统设置有主液压泵21，动臂缸悬臂气缸7，用于悬臂的方向控制阀23和用于臂的方向控制阀24，以及悬臂控制装置25和臂控制装置26.液压驱动系统还设有压力油进给用于当臂缸7的底部压力增加到等于或高于其的高压时将臂架缸6的杆室6b中的压力油供给到用于臂的方向控制阀24的上游侧的装置预定压力。该压力供油装置包括配置在储存管路42中的流动组合器阀44，其可与臂缸6的杆室6b连通。当臂缸7的底部压力为预定压力或更高时，组合阀44保持连通管线40，该连通管线40在压力油可以被供给到方向控制阀的上游侧的状态下将储存管路42和用于臂的方向控制阀24的上游侧彼此连通 24为手臂。

14. 发明申请

US20060162543A1 Hydraulic working machine 有权
标题翻译：液压作业机
公开(公告)号：US20060162543A1
公开(公告)日：2006-07-27
申请号：US10542201
申请日：2004-01-14
申请人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
发明人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
IPC分类号： F15B13/04
CPC分类号： F15B11/024 , E02F9/2203 , E02F9/2217 , E02F9/2235 , E02F9/2239 , E02F9/2285 , E02F9/2296 , F15B2211/20546 , F15B2211/20576 , F15B2211/3052 , F15B2211/3116 , F15B2211/3133 , F15B2211/31576 , F15B2211/31582 , F15B2211/329 , F15B2211/6313 , F15B2211/6316 , Y02P80/13
摘要： A hydraulic circuit for a hydraulic working machine is composed of a main pump 21, a boom cylinder 11 arranged for extension or contraction by pressure oil from the main pump 21, a directional control valve 22 for controlling flows of pressure oil to be fed from the main pump 21 to a bottom chamber 11a and rod chamber 12b of the boom cylinder 11, a control unit 23 for performing a change-over control of the directional control valve 22, a pilot pump 24, a jack-up selector valve 25 for controlling a flow of pressure oil delivered from the pilot pump 24, a flow control valve 26 connected on an upstream side of the directional control valve 22 to a meter-in port of the directional control valve 22 such that the flow control valve 26 can be changed over by the jack-up selector valve 25, and a center bypass selector valve 27 connected on a downstream side of the directional control valve 22 to a center bypass port of the directional control valve 22 such that the center bypass selector valve 27 can be changed over by the jack-up selector valve 25. The hydraulic circuit performs a change-over of the jack-up selector valve 25 in accordance with a bottom pressure on the boom cylinder 11.
摘要翻译：用于液压作业机的液压回路由主泵21，由主泵21的压力油而设置成伸缩的动臂缸11，用于控制从主泵21供给的压力油的流量的方向控制阀22 主泵21到动臂缸11的底部室11a和杆室12b，用于执行方向控制阀22的转换控制的控制单元23，先导泵24，自升式选择阀25 用于控制从先导泵24输送的压力油的流量，连接在方向控制阀22的上游侧的流量控制阀26到方向控制阀22的计量口，使得流量控制阀26可以由上升换向阀25和由方向控制阀22的下游侧连接到方向控制阀22的中心旁通口的中央旁通选择阀27进行切换，使得中心旁路塞转子阀27可以由自升式选择阀25切换。液压回路根据悬臂液压缸11的底部压力进行自升式换向阀25的切换。

15. 发明授权

US07562615B2 Hydraulic working machine 有权
标题翻译：液压作业机
公开(公告)号：US07562615B2
公开(公告)日：2009-07-21
申请号：US10542201
申请日：2004-01-14
申请人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
发明人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
IPC分类号： F15B13/04
CPC分类号： F15B11/024 , E02F9/2203 , E02F9/2217 , E02F9/2235 , E02F9/2239 , E02F9/2285 , E02F9/2296 , F15B2211/20546 , F15B2211/20576 , F15B2211/3052 , F15B2211/3116 , F15B2211/3133 , F15B2211/31576 , F15B2211/31582 , F15B2211/329 , F15B2211/6313 , F15B2211/6316 , Y02P80/13
摘要： A hydraulic circuit for a hydraulic working machine is composed of a main pump 21, a boom cylinder 11 arranged for extension or contraction by pressure oil from the main pump 21, a directional control valve 22 for controlling flows of pressure oil to be fed from the main pump 21 to a bottom chamber 11a and rod chamber 12b of the boom cylinder 11, a control unit 23 for performing a change-over control of the directional control valve 22, a pilot pump 24, a jack-up selector valve 25 for controlling a flow of pressure oil delivered from the pilot pump 24, a flow control valve 26 connected on an upstream side of the directional control valve 22 to a meter-in port of the directional control valve 22 such that the flow control valve 26 can be changed over by the jack-up selector valve 25, and a center bypass selector valve 27 connected on a downstream side of the directional control valve 22 to a center bypass port of the directional control valve 22 such that the center bypass selector valve 27 can be changed over by the jack-up selector valve 25. The hydraulic circuit performs a change-over of the jack-up selector valve 25 in accordance with a bottom pressure on the boom cylinder 11.
摘要翻译：用于液压作业机的液压回路由主泵21，由主泵21的压力油而设置成伸缩的动臂缸11，用于控制从主泵21供给的压力油的流量的方向控制阀22 主泵21连接到动臂缸11的底室11a和杆室12b，用于执行方向控制阀22的转换控制的控制单元23，先导泵24，用于控制的自升式选择阀25 从先导泵24输送的压力油流，连接在方向控制阀22的上游侧的流量控制阀26到方向控制阀22的计量口，使得可以改变流量控制阀26 以及由方向控制阀22的下游侧连接到方向控制阀22的中心旁通口的中央旁通选择阀27，使得中心旁通选择阀valv e 27可以由升降选择阀25切换。液压回路根据悬臂液压缸11的底部压力进行自升式换向阀25的切换。

16. 发明授权

US07255088B2 Engine control system for construction machine 有权
标题翻译：施工机械发动机控制系统
公开(公告)号：US07255088B2
公开(公告)日：2007-08-14
申请号：US10527418
申请日：2004-06-24
申请人： Kazunori Nakamura , Yasushi Arai , Yoichi Kowatari , Kouji Ishikawa , Hideo Karasawa
发明人： Kazunori Nakamura , Yasushi Arai , Yoichi Kowatari , Kouji Ishikawa , Hideo Karasawa
IPC分类号： F02D41/04 , F02D41/14
CPC分类号： F02D31/007 , F02D41/12
摘要： An engine control system includes pressure sensors (73, 74), position sensors (75, 76), pressure sensors (77, 78), a target revolution speed modification value computing unit (90), and a modification value adder (70r). A target revolution speed NR2 for use in control is computed based on changes of status variables such that the target revolution speed NR2 increases from the target revolution speed NR1 applied from an input unit (71), and then moderately returns to the target revolution speed NR1. In accordance with the computed target revolution speed NR2 for use in control, a target fuel injection amount FN1 is computed and a fuel injection amount is controlled. As a result, a drop of an engine revolution speed attributable to an abrupt increase of an engine load can be suppressed without sacrificing the work efficiency, and lowering of durability caused by an excessive increase of the engine revolution speed can be prevented.
摘要翻译：发动机控制系统包括压力传感器（73,74），位置传感器（75,76），压力传感器（77,78），目标转速修正值计算单元（90）和修正值加法器（70r）。根据状态变量的变化，计算目标转速NR2，使得目标转速NR2从从输入单元（71）施加的目标转速NR 1增加，然后适度返回到目标转速NR 1。根据用于控制的计算出的目标转速NR2，计算目标燃料喷射量FN1，并控制燃料喷射量。结果，可以在不牺牲工作效率的情况下抑制由于发动机负载突然增加引起的发动机转速的下降，并且可以防止由于发动机转速过大而导致的耐久性降低。

17. 发明授权

US08336443B2 Hydraulic working machine 有权
标题翻译：液压作业机
公开(公告)号：US08336443B2
公开(公告)日：2012-12-25
申请号：US12428203
申请日：2009-04-22
申请人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
发明人： Toshihiro Abe , Yusuke Kajita , Kazunori Nakamura , Kouji Ishikawa , Hideo Karasawa
IPC分类号： F15B11/024
CPC分类号： F15B11/024 , E02F9/2203 , E02F9/2217 , E02F9/2235 , E02F9/2239 , E02F9/2285 , E02F9/2296 , F15B2211/20546 , F15B2211/20576 , F15B2211/3052 , F15B2211/3116 , F15B2211/3133 , F15B2211/31576 , F15B2211/31582 , F15B2211/329 , F15B2211/6313 , F15B2211/6316 , Y02P80/13
摘要： A hydraulic circuit for a hydraulic working machine is composed of a main pump 21, a boom cylinder 11 arranged for extension or contraction by pressure oil from the main pump 21, a directional control valve 22 for controlling flows of pressure oil to be fed from the main pump 21 to a bottom chamber 11a and rod chamber 12b of the boom cylinder 11, a control unit 23 for performing a change-over control of the directional control valve 22, a pilot pump 24, a jack-up selector valve 25 for controlling a flow of pressure oil delivered from the pilot pump 24, a flow control valve 26 connected on an upstream side of the directional control valve 22 to a meter-in port of the directional control valve 22 such that the flow control valve 26 can be changed over by the jack-up selector valve 25, and a center bypass selector valve 27 connected on a downstream side of the directional control valve 22 to a center bypass port of the directional control valve 22 such that the center bypass selector valve 27 can be changed over by the jack-up selector valve 25. The hydraulic circuit performs a change-over of the jack-up selector valve 25 in accordance with a bottom pressure on the boom cylinder 11.
摘要翻译：用于液压作业机的液压回路由主泵21，由主泵21的压力油而设置成伸缩的动臂缸11，用于控制从主泵21供给的压力油的流量的方向控制阀22 主泵21连接到动臂缸11的底室11a和杆室12b，用于执行方向控制阀22的转换控制的控制单元23，先导泵24，用于控制的自升式选择阀25 从先导泵24输送的压力油流，连接在方向控制阀22的上游侧的流量控制阀26到方向控制阀22的计量口，使得可以改变流量控制阀26 以及由方向控制阀22的下游侧连接到方向控制阀22的中心旁通口的中央旁通选择阀27，使得中心旁通选择阀valv e 27可以由升降选择阀25切换。液压回路根据悬臂液压缸11的底部压力进行自升式换向阀25的切换。

18. 发明授权

US08919115B2 Hydraulic drive device for hydraulic excavator 有权
标题翻译：液压挖掘机液压驱动装置
公开(公告)号：US08919115B2
公开(公告)日：2014-12-30
申请号：US13023789
申请日：2011-02-09
申请人： Naoki Hagiwara , Yasuo Okano , Tsuyoshi Nakamura , Kouji Ishikawa , Kazunori Nakamura
发明人： Naoki Hagiwara , Yasuo Okano , Tsuyoshi Nakamura , Kouji Ishikawa , Kazunori Nakamura
IPC分类号： F15B11/04 , E02F9/22
CPC分类号： E02F9/2239 , E02F9/2242 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B2211/20576 , F15B2211/30565 , F15B2211/40515 , F15B2211/415 , F15B2211/428 , F15B2211/7142 , F15B2211/781
摘要： The operability when performing a combined arm-crowd and bucket operation can be improved. A hydraulic drive device for a hydraulic excavator includes: a bucket directional control valve and a second arm directional control valve, which are connected in parallel tandem with a first hydraulic pump; a first arm directional control valve that is connected to a second hydraulic pump; and a flow rate restriction device that restricts the flow rate of pressure oil supplied to the second arm directional control valve, during crowd operation of a bucket. This flow rate restriction device includes a variable throttle whose opening is controlled so as to become smaller as a bucket operating device is operated to the crowd side, the variable throttle being provided in a bypass path connecting to the supply port of the second arm directional control valve.
摘要翻译：可以提高执行组合式斗杆和铲斗操作时的可操作性。液压挖掘机的液压驱动装置包括：与第一液压泵并联连接的铲斗方向控制阀和第二臂方向控制阀; 与第二液压泵连接的第一臂方向控制阀; 以及流量限制装置，其限制在斗的人群操作期间供应到第二臂方向控制阀的压力油的流量。该流量限制装置包括可变节流阀，其可随着铲斗操作装置向人群操作而控制开口变小，可变节气门设置在连接到第二臂方向控制器的供给口的旁路阀。

19. 发明申请

US20140090369A1 Hydraulic Drive Device for Working Machine 有权
标题翻译：液压驱动装置
公开(公告)号：US20140090369A1
公开(公告)日：2014-04-03
申请号：US14118141
申请日：2012-05-17
申请人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
发明人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
IPC分类号： F15B15/20
CPC分类号： F15B15/20 , E02F9/123 , E02F9/2217 , E02F9/2242 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.
摘要翻译：一种用于液压挖掘机的液压驱动装置，包括：第一液压泵; 与第一泵并联连接的第一起重臂方向控制阀和第二臂方向控制阀; 第二液压泵; 以及与第二泵并联连接的第二起重臂方向控制阀和第一臂方向控制阀; 其中：液压驱动装置还包括：第三液压泵; 连接到第三泵的第三起重臂方向控制阀，并控制供应到动臂缸的压力油的流动; 以及与第三动臂方向控制阀串联连接的第三臂方向控制阀，并控制供给到手臂缸的压力油的流动。

20. 发明授权

US09341198B2 Hydraulic drive device for working machine 有权
标题翻译：液压驱动装置
公开(公告)号：US09341198B2
公开(公告)日：2016-05-17
申请号：US14118141
申请日：2012-05-17
申请人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
发明人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
IPC分类号： F15B15/20 , E02F9/22 , E02F9/12
CPC分类号： F15B15/20 , E02F9/123 , E02F9/2217 , E02F9/2242 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.
摘要翻译：一种用于液压挖掘机的液压驱动装置，包括：第一液压泵; 与第一泵并联连接的第一起重臂方向控制阀和第二臂方向控制阀; 第二液压泵; 以及与第二泵并联连接的第二起重臂方向控制阀和第一臂方向控制阀; 其中：液压驱动装置还包括：第三液压泵; 连接到第三泵的第三起重臂方向控制阀，并控制供应到动臂缸的压力油的流动; 以及与第三动臂方向控制阀串联连接的第三臂方向控制阀，并控制供给到手臂缸的压力油的流动。

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