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1. 发明授权

US07677038B2 Pump unit 失效
标题翻译：泵单元
公开(公告)号：US07677038B2
公开(公告)日：2010-03-16
申请号：US11625046
申请日：2007-01-19
申请人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
发明人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
IPC分类号： F04B49/00 , F04B23/00
CPC分类号： F04B1/324 , F04B1/22 , F04B23/06 , F16H39/14 , F16H61/4139 , F16H61/44
摘要： There is provided a pump unit including plurality of hydraulic pumps respectively fluidly connected to plurality of hydraulic motors, which are disposed away from the pump unit, so as to form closed circuits, the pump unit including a pump case accommodating the plurality of hydraulic pumps so that the plurality of hydraulic pumps are operatively driven by a common power source; and a filter mounted at the pump case so as to be inserted in a charge passage for replenishing operation fluid from a fluid sump to the closed circuits.
摘要翻译：提供了一种泵单元，其包括分别流体连接到多个液压马达的泵单元，多个液压马达远离泵单元设置，以便形成闭合回路，泵单元包括容纳多个液压泵的泵壳所述多个液压泵由公共电源可操作地驱动; 以及安装在泵壳体上的过滤器，以将其插入充电通道中，以将操作流体从流体槽补充到闭合回路。

2. 发明申请

US20070163817A1 Pump unit 失效
标题翻译：泵单元
公开(公告)号：US20070163817A1
公开(公告)日：2007-07-19
申请号：US11623687
申请日：2007-01-16
申请人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
发明人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
IPC分类号： B60K25/00
CPC分类号： B60K17/28 , B60K17/10
摘要： There is provided a pump unit including plurality of hydraulic pump bodies respectively fluidly connected to plurality of hydraulic motor bodies, which are disposed away from the pump unit, so as to form closed circuits, the pump unit including: a housing accommodating the plurality of hydraulic pump bodies so that the plurality of hydraulic pump bodies are operatively driven by a common driving source; a charge pump body operatively driven by the driving source; a suction fluid passage fluidly connected to a suction side of the charge pump body; a discharge fluid passage fluidly connected to a discharge side of the charge pump body; a charge passage for replenishing a part of pressurized fluid in the discharge fluid passage into each of the closed circuits; and a working machine operating fluid passage for supplying a part of the pressurized fluid in the discharge fluid passage toward an external hydraulic actuator.
摘要翻译：提供了一种泵单元，包括多个液压泵体，其分别流体连接到远离泵单元的多个液压马达主体，以便形成闭合回路，所述泵单元包括：容纳多个液压的壳体使得多个液压泵体由共同的驱动源可操作地驱动; 由驱动源可操作地驱动的电荷泵体; 吸入流体通道，其流体地连接到所述电荷泵体的吸入侧; 排出流体通道，其流体地连接到电荷泵体的排出侧; 用于将排出流体通道中的加压流体的一部分补充到每个闭合回路中的装料通道; 以及工作机工作流体通道，用于将排出流体通道中的一部分加压流体提供给外部液压致动器。

3. 发明授权

US07775309B2 Pump unit 失效
标题翻译：泵单元
公开(公告)号：US07775309B2
公开(公告)日：2010-08-17
申请号：US11623687
申请日：2007-01-16
申请人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
发明人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
IPC分类号： B60K17/28
CPC分类号： B60K17/28 , B60K17/10
摘要： There is provided a pump unit including plurality of hydraulic pump bodies respectively fluidly connected to plurality of hydraulic motor bodies, which are disposed away from the pump unit, so as to form closed circuits, the pump unit including: a housing accommodating the plurality of hydraulic pump bodies so that the plurality of hydraulic pump bodies are operatively driven by a common driving source; a charge pump body operatively driven by the driving source; a suction fluid passage fluidly connected to a suction side of the charge pump body; a discharge fluid passage fluidly connected to a discharge side of the charge pump body; a charge passage for replenishing a part of pressurized fluid in the discharge fluid passage into each of the closed circuits; and a working machine operating fluid passage for supplying a part of the pressurized fluid in the discharge fluid passage toward an external hydraulic actuator.
摘要翻译：提供了一种泵单元，包括多个液压泵体，其分别流体连接到远离泵单元的多个液压马达主体，以形成闭合回路，所述泵单元包括：容纳多个液压的壳体使得多个液压泵体由共同的驱动源可操作地驱动; 由驱动源可操作地驱动的电荷泵体; 吸入流体通道，其流体地连接到所述电荷泵体的吸入侧; 排出流体通道，其流体地连接到电荷泵体的排出侧; 用于将排出流体通道中的加压流体的一部分补充到每个闭合回路中的装料通道; 以及工作机工作流体通道，用于将排出流体通道中的一部分加压流体提供给外部液压致动器。

4. 发明申请

US20070144169A1 Pump Unit 失效
标题翻译：泵单元
公开(公告)号：US20070144169A1
公开(公告)日：2007-06-28
申请号：US11625046
申请日：2007-01-19
申请人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
发明人： Ryota Ohashi , Hironori Sumomozawa , Nobuhisa Kamikawa , Masahisa Kawamura
IPC分类号： F16D39/00
CPC分类号： F04B1/324 , F04B1/22 , F04B23/06 , F16H39/14 , F16H61/4139 , F16H61/44
摘要： There is provided a pump unit including plurality of hydraulic pumps respectively fluidly connected to plurality of hydraulic motors, which are disposed away from the pump unit, so as to form closed circuits, the pump unit including a pump case accommodating the plurality of hydraulic pumps so that the plurality of hydraulic pumps are operatively driven by a common power source; and a filter mounted at the pump case so as to be inserted in a charge passage for replenishing operation fluid from a fluid sump to the closed circuits.
摘要翻译：提供了一种泵单元，其包括分别流体连接到多个液压马达的泵单元，多个液压马达远离泵单元设置，以便形成闭合回路，泵单元包括容纳多个液压泵的泵壳所述多个液压泵由公共电源可操作地驱动; 以及安装在泵壳体上的过滤器，以将其插入充电通道中，以将操作流体从流体槽补充到闭合回路。

5. 发明申请

US20060008357A1 Pump system, charge relief mechanism and oil pressure control mechanism 失效
标题翻译：泵系统，减压机构和油压控制机构
公开(公告)号：US20060008357A1
公开(公告)日：2006-01-12
申请号：US11150250
申请日：2005-06-13
申请人： Masahisa Kawamura , Nobuhisa Kamikawa , Takeaki Nozaki , Kengo Sasahara
发明人： Masahisa Kawamura , Nobuhisa Kamikawa , Takeaki Nozaki , Kengo Sasahara
IPC分类号： F04B35/00 , F04B17/00
CPC分类号： F04B1/22 , F04B23/06 , Y10T137/7869
摘要： There is provided a pump system including; a plurality of hydraulic pump bodies arranged in parallel; a plurality of pump shafts respectively driving the plurality of hydraulic pump bodies; a power transmission mechanism operatively connecting the plurality of pump shafts; and a pump case which accommodating the plurality of hydraulic pump bodies and the power transmission mechanism, and supports the plurality of pump shafts in a rotatable manner about an axis line, the pump case including a port block formed with supply/discharge oil passages for the plurality of pump bodies. One pump shaft of the plurality of pump shafts has a first end extending outward from the pump case so as to form an input end operatively connected to a driving source. The one pump shaft is directly or indirectly supported by the pump case at a region which is closer to the input end via a plurality of bearing members.
摘要翻译：提供了一种泵系统，包括：多个并联排列的液压泵体; 分别驱动多个液压泵体的多个泵轴; 动力传递机构，其可操作地连接所述多个泵轴; 以及容纳所述多个液压泵主体和所述动力传递机构的泵壳体，并且以可旋转的方式围绕轴线支撑所述多个泵轴，所述泵壳体包括形成有供给/排出油路的端口块，多个泵体。多个泵轴中的一个泵轴具有从泵壳向外延伸的第一端，以形成可操作地连接到驱动源的输入端。一个泵轴通过多个轴承部件在较靠近输入端的区域直接或间接地由泵壳体支撑。

6. 发明申请

US20080185053A1 Pump system, charge relief mechanism and oil pressure control mechanism 审中-公开
标题翻译：泵系统，减压机构和油压控制机构
公开(公告)号：US20080185053A1
公开(公告)日：2008-08-07
申请号：US12098193
申请日：2008-04-04
申请人： Masahisa Kawamura , Nobuhisa Kamikawa , Takeaki Nozaki , Kengo Sasahara
发明人： Masahisa Kawamura , Nobuhisa Kamikawa , Takeaki Nozaki , Kengo Sasahara
IPC分类号： F16K15/00
CPC分类号： F04B1/22 , F04B23/06 , Y10T137/7869
摘要： A charge relief mechanism for setting an oil pressure of a charge line which replenishes operating oil to a pair of operating oil lines fluidly connecting a hydraulic pump body and a hydraulic actuator, includes: an oil pressure setting line; and a charge relief valve inserted in the oil pressure setting line. The charge relief valve includes a relief valve body provided with a large diameter hole, a small diameter hole, and a check valve seat formed between the large diameter hole and the small diameter hole. The large diameter hole is provided with a check valve body which is seatable on the check valve seat and is movable in the axis line direction, and a slip-out prevention member for preventing the check valve body from being separated from the large diameter hole while allowing the check valve body to selectively communicate or block between the large diameter hole and the small diameter hole.
摘要翻译：一种用于将液压泵主体和液压致动器流体连接的一对工作油管线补充操作油的充气管线的油压设定为电荷释放机构，包括：油压设定线; 以及插入油压设定线中的减压阀。减压阀包括设置有大直径孔，小直径孔和形成在大直径孔和小直径孔之间的止回阀座的安全阀体。大直径孔设置有止回阀体，该止回阀体可在止回阀座上座位并且能够沿轴线方向移动，并且防止止回阀体与大直径孔分离的防脱出构件同时允许止回阀体在大直径孔和小直径孔之间选择性地连通或阻塞。

7. 发明授权

US07370476B2 Pump system, charge relief mechanism and oil pressure control mechanism 失效
标题翻译：泵系统，减压机构和油压控制机构
公开(公告)号：US07370476B2
公开(公告)日：2008-05-13
申请号：US11150250
申请日：2005-06-13
申请人： Masahisa Kawamura , Nobuhisa Kamikawa , Takeaki Nozaki , Kengo Sasahara
发明人： Masahisa Kawamura , Nobuhisa Kamikawa , Takeaki Nozaki , Kengo Sasahara
IPC分类号： F16D31/02
CPC分类号： F04B1/22 , F04B23/06 , Y10T137/7869
摘要： There is provided a pump system including; a plurality of hydraulic pump bodies arranged in parallel; a plurality of pump shafts respectively driving the plurality of hydraulic pump bodies; a power transmission mechanism operatively connecting the plurality of pump shafts; and a pump case which accommodating the plurality of hydraulic pump bodies and the power transmission mechanism, and supports the plurality of pump shafts in a rotatable manner about an axis line, the pump case including a port block formed with supply/discharge oil passages for the plurality of pump bodies. One pump shaft of the plurality of pump shafts has a first end extending outward from the pump case so as to form an input end operatively connected to a driving source. The one pump shaft is directly or indirectly supported by the pump case at a region which is closer to the input end via a plurality of bearing members.
摘要翻译：提供了一种泵系统，包括：多个并联排列的液压泵体; 分别驱动多个液压泵体的多个泵轴; 动力传递机构，其可操作地连接所述多个泵轴; 以及容纳所述多个液压泵主体和所述动力传递机构的泵壳体，并且以可旋转的方式围绕轴线支撑所述多个泵轴，所述泵壳体包括形成有供给/排出油路的端口块，多个泵体。多个泵轴中的一个泵轴具有从泵壳向外延伸的第一端，以形成可操作地连接到驱动源的输入端。一个泵轴通过多个轴承部件在较靠近输入端的区域直接或间接地由泵壳体支撑。

8. 发明授权

US5862868A Bulldozer blade pitch control method and controller for the same 失效
标题翻译：推土机桨叶桨距控制方法和控制器相同
公开(公告)号：US5862868A
公开(公告)日：1999-01-26
申请号：US884945
申请日：1997-06-30
申请人： Shigeru Yamamoto , Nobuhisa Kamikawa , Toshikazu Okada , Noriaki Namiki
发明人： Shigeru Yamamoto , Nobuhisa Kamikawa , Toshikazu Okada , Noriaki Namiki
IPC分类号： E02F3/85 , E02F3/84 , E02F9/22 , E02F3/76
CPC分类号： E02F3/844 , E02F3/845 , E02F9/2285 , E02F9/2292
摘要： A bulldozer blade (10) is automatically reset to a predetermined excavating pitch while the bulldozer (20) is traveling backwardly after it has completed an operation of excavating, carrying, or dumping earth. The bulldozer blade (10) can be set to an excavating pitch, a carrying pitch, or a dumping pitch when excavating, carrying, or dumping earth while the bulldozer is traveling forwardly, the bulldozer blade being attached to the leading ends of frame members (15A, 15B) which are pivotally mounted on opposite sides of the vehicle body (20a) in such a manner that the bulldozer blade can swing longitudinally. The rotational angles of left and right lifting cylinders (21A, 21B), which are attached to the bulldozer blade, are detected by first detectors (23a, 23b) while the bulldozer is traveling backwardly after it has completed an operation of excavating, carrying, or dumping earth, and the bulldozer blade is automatically reset to a predetermined excavating pitch from the carrying pitch or the dumping pitch in response to a command issued by a controller (50) which receives detection signals from the first detectors.
摘要翻译：在推土机（20）完成挖掘，搬运或倾倒地面的操作之后，推土机（20）向后行进时，推土机叶片（10）自动复位至预定的挖掘间距。推土机叶片（10）可以在推土机向前行进时挖掘，搬运或倾倒土地时设定为挖掘沥青，承载沥青或倾倒沥青，推土机叶片安装在框架构件的前端（ 15A，15B），其以使得推土机叶片能够纵向摆动的方式枢转地安装在车身（20a）的相对侧上。在推土机完成挖掘，搬运后的推进工作的同时，第一检测器（23a，23b）检测安装在推土机叶片上的左右提升缸（21A，21B）的旋转角度，或倾倒土，并且所述推土机叶片响应于从所述第一检测器接收检测信号的控制器（50）发出的命令，从所述承载节距或所述倾倒间距自动地重置为预定的挖掘间距。

9. 发明授权

US5620053A Blade apparatus and its control method in bulldozer 失效
标题翻译：铲土机及其在推土机中的控制方法
公开(公告)号：US5620053A
公开(公告)日：1997-04-15
申请号：US378839
申请日：1995-01-26
申请人： Nobuhisa Kamikawa , Toshikazu Okada , Hidekazu Nagase , Naomi Kobayashi , Hiroshi Itogawa , Noriaki Namiki , Norihisa Matsumoto , Shigeru Yamamoto
发明人： Nobuhisa Kamikawa , Toshikazu Okada , Hidekazu Nagase , Naomi Kobayashi , Hiroshi Itogawa , Noriaki Namiki , Norihisa Matsumoto , Shigeru Yamamoto
IPC分类号： E02F3/84 , E02F3/85 , E02F9/20 , E02F9/22 , E02F3/76
CPC分类号： E02F9/2292 , E02F3/7618 , E02F3/844 , E02F9/2004 , E02F9/2296
摘要： A hydraulic drive system for the pitch cylinders (4A, 4B) of a bulldozer blade apparatus can include (a) main hydraulic pumps (30A, 30B) and an assistant hydraulic pump (31) to make up the assistant hydraulic circuit, (b) variable displacement hydraulic pumps (21A, 21B), or (c) fixed displacement hydraulic pumps (30A, 30B) and a plurality of solenoid selector valves such that the pitch cylinders can be connected in series. The assistant hydraulic pump (31) is connectable to delivery lines of the main hydraulic pumps through an assistant solenoid selector valve (32) which is controlled by an external signal. The blade (10) can be formed so that a line (14) tangential to the lower edge of the curved panel of the blade is inclined rearwardly with respect to the front face (13) of the blade edge member (12). Earth-moving work can be performed by inclining the blade (10) rearwardly by an angle (.theta..sub.1) with respect to its posture in digging work, and earth-dumping work can be performed by inclining the blade (10) forwardly by an angle (.theta..sub.2) with respect to its posture in digging work. The coupling positions of the two pitch cylinders (4A, 4B) can be in asymmetrical relation to each other. Control signals can be provided by a blade lever (23), tilt/pitch changeover switch (24), and pitch speed changeover switch (25). The tilt/pitch changeover switch (24) and pitch speed changeover switch (25) can be replaced by pitch-dump selector switch (25A) and pitch-back selector switch (24A).
摘要翻译：用于推土机叶片装置的变桨缸（4A，4B）的液压驱动系统可以包括：（a）主液压泵（30A，30B）和辅助液压泵（31），以组成辅助液压回路;（b）可变排量液压泵（21A，21B）或（c）固定排量液压泵（30A，30B）和多个电磁选择阀，使得变桨缸可以串联连接。辅助液压泵（31）可通过由外部信号控制的辅助电磁换向阀（32）连接到主液压泵的输送管线。叶片（10）可以形成为使得与叶片的弯曲面板的下边缘相切的线（14）相对于叶片边缘构件（12）的前表面（13）向后倾斜。地面移动作业可以通过在挖掘作业中将叶片（10）相对于其姿势向后倾斜角度（θ1）来执行，并且可以通过将叶片（10）向前倾斜角度（θ2）相对于其在挖掘工作中的姿势。两个变桨缸（4A，4B）的联接位置可以彼此不对称。控制信号可由叶片杆（23），倾斜/俯仰切换开关（24）和俯仰速度转换开关（25）提供。俯仰/俯仰切换开关（24）和俯仰速度切换开关（25）可以由倾倒切换选择开关（25A）和俯仰式选择开关（24A）代替。

10. 发明授权

US5983151A Tractive force control apparatus and method for construction equipment 失效
标题翻译：牵引力控制装置及施工设备方法
公开(公告)号：US5983151A
公开(公告)日：1999-11-09
申请号：US849182
申请日：1997-05-28
申请人： Toshikazu Okada , Hidekazu Nagase , Shigeru Yamamoto , Noriaki Namiki , Nobuhisa Kamikawa
发明人： Toshikazu Okada , Hidekazu Nagase , Shigeru Yamamoto , Noriaki Namiki , Nobuhisa Kamikawa
IPC分类号： E02F3/84 , E02F3/85 , E02F9/22 , F02D29/04 , F04B49/00 , F15B11/08 , F15B11/00
CPC分类号： F02D29/04
摘要： A tractive force control apparatus and method for preventing a torque converter from being stalled while a working machine is operated during excavation and earth carrying work using a construction machine. In this apparatus, an engine rotational speed sensor (2), a torque converter output shaft rotational speed sensor (4) and a lift combination solenoid valve (12) are connected to a control apparatus. A pilot pressure control valve (11) for a blade lift is connected to a first lift operating valve (13), and also to a second lift operating valve (14) via the lift combination solenoid valve (12). First and second hydraulic pumps (20, 21) and lift cylinders (15, 15) are connected respectively via the first and second lift operating valves (13, 14). A traction output is computed in the control apparatus (16), and, when the traction output is lower than a target level, the lift combination solenoid valve (12) is turned off to reduce a flow rate of oil to the lift cylinders (15, 15). The traction force is thus increased correspondingly to prevent a torque converter (3) from being stalled.
摘要翻译： PCT No.PCT / JP95 / 02374 371日期1997年5月28日 102（e）日期1997年5月28日PCT提交1995年11月21日PCT公布。公开号WO96 / 17136 日期1996年6月6日一种牵引力控制装置和方法，用于在使用建筑机械的挖掘和承载作业期间在工作机械运行时防止变矩器停转。在该装置中，发动机转速传感器（2），变矩器输出轴转速传感器（4）和升降组合电磁阀（12）连接到控制装置。用于叶片提升的先导压力控制阀（11）连接到第一提升操作阀（13），并且还经由提升组合电磁阀（12）连接到第二提升操作阀（14）。第一和第二液压泵（20,21）和提升缸（15,15）分别经由第一和第二提升操作阀（13,14）连接。在控制装置（16）中计算牵引输出，并且当牵引输出低于目标水平时，提升组合电磁阀（12）被关闭以降低到提升缸（15）的油流量，15）。因此，相应地增加牵引力以防止变矩器（3）停转。

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