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1. 发明申请

US20090113887A1 Hydraulic Drive Device 审中-公开
标题翻译：液压驱动装置
公开(公告)号：US20090113887A1
公开(公告)日：2009-05-07
申请号：US11795968
申请日：2006-01-24
申请人： Kiwamu Takahashi , Yasutaka Tsuruga , Junya Kawamoto , Kenji Itou , Takuya Matsui
发明人： Kiwamu Takahashi , Yasutaka Tsuruga , Junya Kawamoto , Kenji Itou , Takuya Matsui
IPC分类号： F15B11/02 , F15B11/17
CPC分类号： F15B11/163 , E02F9/2228 , E02F9/2235 , E02F9/2285 , E02F9/2292 , F15B11/165 , F15B11/17 , F15B2211/20538 , F15B2211/20553 , F15B2211/20576 , F15B2211/20584 , F15B2211/253 , F15B2211/30525 , F15B2211/30535 , F15B2211/3111 , F15B2211/327 , F15B2211/329 , F15B2211/355 , F15B2211/40515 , F15B2211/41581 , F15B2211/423 , F15B2211/50536 , F15B2211/5151 , F15B2211/55 , F15B2211/6054 , F15B2211/6346 , F15B2211/6355 , F15B2211/67 , F15B2211/7053 , F15B2211/71
摘要： To permit driving a tilt cylinder and an angle cylinder at relatively low speed and also to permit driving an additional actuator at high speed.Provided are a tilt cylinder 9 and angle cylinder 10 for pivotally tilting a blade 7 selectively leftward and rightward and for pivotally angling the blade 7 selectively forward and rearward, respectively, and an additional actuator for actuating an additional attachment. Also provided are a tilting/angling pressure oil feed means comprising a tilting/angling directional control valve 19 for controlling a flow of pressure oil to be fed to one of the cylinders 9,10 and a selector valve 20 for selectively feeding pressure oil, which flows out of the directional control valve 19, to one of the cylinders 9,10. An additional pressure oil feed means for feeding pressure oil to the additional actuator 27 is provided independently of the tilting/angling directional control valve, and the additional pressure oil feed means has an additional directional control valve 29.
摘要翻译：允许以相对低的速度驱动倾斜气缸和角度气缸，并且还允许以高速驱动附加致动器。设置有倾斜气缸9和角度气缸10，用于分别枢转地使叶片7向左和向右倾斜，并且用于分别选择性地向前和向后摆动叶片7，以及用于致动附加附件的附加致动器。还提供了一种倾斜/倾角压力油进给装置，包括用于控制供给到一个气缸9,10的压力油的倾斜/垂直方向控制阀19和用于选择性地供给压力油的选择阀20，从方向控制阀19流出到气缸9,10中的一个。独立于倾斜/垂直方向控制阀提供了用于将压力油供给到附加致动器27的另外的压力进油装置，并且附加压力供油装置具有附加的方向控制阀29。

2. 发明申请

US20090031719A1 Hydraulic Drive System 审中-公开
标题翻译：液压驱动系统
公开(公告)号：US20090031719A1
公开(公告)日：2009-02-05
申请号：US11576559
申请日：2006-05-08
申请人： Yasutaka Tsuruga , Junya Kawamoto , Kiwamu Takahashi , Kenji Itou
发明人： Yasutaka Tsuruga , Junya Kawamoto , Kiwamu Takahashi , Kenji Itou
IPC分类号： F15B11/17 , F15B13/06
CPC分类号： E02F9/2225 , E02F9/2232 , E02F9/2292 , E02F9/2296 , F15B11/055 , F15B11/165 , F15B2211/20523 , F15B2211/20553 , F15B2211/253 , F15B2211/30535 , F15B2211/652
摘要： The hydraulic drive system comprises an engine 1, a pump unit 100, a plurality of actuators 5a, 5b and 5c, a control valve unit 4, and engine revolution speed detecting means 4f. The pump unit 100 includes a pump tilting control mechanism 8 for load sensing control, and the control valve unit 4 includes a plurality of flow control valves 15a, 15b and 15c and pressure compensation valves 10a, 10b and 10c. The engine revolution speed detecting means 4f includes a first differential pressure reducing valve 14 for outputting, as an absolute value, a pressure depending on an engine revolution speed. The output pressure of the first differential pressure reducing valve 14 is introduced, as a target load-sensing differential pressure, to the pump tilting mechanism 8 via a line 127.
摘要翻译：液压驱动系统包括发动机1，泵单元100，多个致动器5a，5b和5c，控制阀单元4和发动机转速检测装置4f。泵单元100包括用于负载感测控制的泵倾转控制机构8，并且控制阀单元4包括多个流量控制阀15a，15b和15c以及压力补偿阀10a，10b和10c。发动机转速检测装置4f包括用于输出取决于发动机转速的压力作为绝对值的第一差压减压阀14。第一差压减压阀14的输出压力通过管线127作为目标载荷感测差压引入泵倾斜机构8。

3. 发明授权

US06651428B2 Hydraulic drive device 失效
标题翻译：液压驱动装置
公开(公告)号：US06651428B2
公开(公告)日：2003-11-25
申请号：US10018575
申请日：2001-12-20
申请人： Kiwamu Takahashi , Takashi Kanai , Yasutaka Tsuruga , Kenichiro Nakatani , Junya Kawamoto
发明人： Kiwamu Takahashi , Takashi Kanai , Yasutaka Tsuruga , Kenichiro Nakatani , Junya Kawamoto
IPC分类号： F16D3102
CPC分类号： E02F9/2292 , E02F9/2203 , E02F9/2232 , E02F9/2296 , F15B11/165 , F15B2211/20553 , F15B2211/20576 , F15B2211/20584 , F15B2211/30535 , F15B2211/3111 , F15B2211/31576 , F15B2211/355 , F15B2211/6054 , F15B2211/6346 , F15B2211/6355 , F15B2211/71
摘要： Differential pressures across flow control valves 6a, 6b and 6c are controlled by pressure compensating valves 7a, 7b and 7c to be held at the same value, i.e., a differential pressure &Dgr;PLS, and the differential pressure &Dgr;PLS is maintained at a target differential pressure &Dgr;PLSref by a pump displacement control unit 5. For changing the target differential pressure depending on change in revolution speed of an engine 1, a flow detecting valve 31 is disposed in a delivery line 30a, 30b of a fixed displacement hydraulic pump 30, and a differential pressure &Dgr;Pp across a variable throttle portion 31a of the flow detecting valve 31 is introduced to a setting controller 32. A selector valve 50 operable to shift between a fully closed position and a throttle position is disposed in parallel to the flow detecting valve 31 and is shifted by a control lever 51.
摘要翻译：流量控制阀6a，6b和6c之间的差压由压力补偿阀7a，7b和7c控制以保持在相同的值，即差压DeltaPLS，并且差压DeltaPLS保持在目标压差DeltaPLSref 通过泵排量控制单元5.为了根据发动机1的转速的变化来改变目标压差，流量检测阀31设置在固定排量液压泵30的输送管线30a，30b中，差速器流量检测阀31的可变节流部31a的压力DeltaPp被引入到设定控制器32.可操作以在完全关闭位置和节气门位置之间移动的选择阀50与流量检测阀31并联设置，并且由控制杆51移动。

4. 发明授权

US06397591B1 Hydraulic driving unit 有权
标题翻译：液压驱动单元
公开(公告)号：US06397591B1
公开(公告)日：2002-06-04
申请号：US09601518
申请日：2000-08-02
申请人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto , Kenichiro Nakatani , Kiwamu Takahashi , Satoshi Hamamoto , Yasuharu Okazaki , Yukiaki Nagao
发明人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto , Kenichiro Nakatani , Kiwamu Takahashi , Satoshi Hamamoto , Yasuharu Okazaki , Yukiaki Nagao
IPC分类号： F15B1306
CPC分类号： E02F9/128 , E02F3/325 , E02F3/964 , E02F9/123 , E02F9/2207 , E02F9/2267 , E02F9/2271 , E02F9/2296 , F15B11/0406 , F15B11/162 , F15B2211/20553 , F15B2211/251 , F15B2211/30505 , F15B2211/30535 , F15B2211/3111 , F15B2211/50518 , F15B2211/5153 , F15B2211/6054 , F15B2211/7053 , F15B2211/7058 , F15B2211/71 , F15B2211/75
摘要： A hydraulic drive system includes a pump control unit 18 for controlling a pump delivery rate such that a pump delivery pressure is held at a predetermined value higher than a maximum load pressure among actuators 2-6. Pressure compensating valves 12-16 are each constructed to set, as a target compensation differential pressure, a differential pressure between the delivery pressure of a hydraulic pump 1 and the maximum load pressure among the actuators 2-6. The pressure compensating valve 12 is given such a load dependent characteristic that the target compensation differential pressure is reduced when a load pressure rises. A lower limit setting spring 55 for limiting the target compensation differential pressure from becoming smaller than a predetermined value is provided in the pressure compensating valve 12 for the swing section.
摘要翻译：液压驱动系统包括泵控制单元18，用于控制泵输送速率，使得泵输送压力保持在高于致动器2-6之间的最大负载压力的预定值。压力补偿阀12-16各自被构造成将作为目标补偿压差的液压泵1的输送压力和致动器2-6中的最大负载压力之间的压差设定为目标补偿压力。压力补偿阀12具有这样的负载相关特性，即当负载压力升高时目标补偿压差降低。用于将目标补偿压差限制在小于预定值的下限设定弹簧55设置在用于摆动部分的压力补偿阀12中。

5. 发明授权

US07798738B2 Swivel joint for construction machine 有权
标题翻译：建筑机械用旋转接头
公开(公告)号：US07798738B2
公开(公告)日：2010-09-21
申请号：US10567908
申请日：2004-12-06
申请人： Junya Kawamoto , Kazuyoshi Yamada , Yasutaka Tsuruga , Kenji Itou
发明人： Junya Kawamoto , Kazuyoshi Yamada , Yasutaka Tsuruga , Kenji Itou
IPC分类号： F16K99/00
CPC分类号： E02F9/2275 , B66C23/84 , E02F9/006 , F16L27/093 , Y10T403/257
摘要： A swivel joint for a construction machine is mounted to an upper track frame, and a body is rotatable together with a swing structure main frame in an opening through engagement between a stopper projection and a stopper plate. Tubes on the swing structure side are connected to an upper end surface of the body by using fittings in concentrated layout, and tubes on the travel structure side are connected to a lower portion of the spindle by using fittings. The body has thicker wall portions in sidewalls thereof, and a plurality of axial passages communicating with a plurality of circumferential grooves are formed inside the thicker wall portions. The plurality of axial passages are opened at the upper end surface of the body, and the tubes on the swing structure side are connected to the upper end surface of the body in concentrated layout.
摘要翻译：用于建筑机械的旋转接头安装到上部履带架上，并且主体通过止动突起和止动板之间的接合可旋转地与摆动结构主框架一起打开。摆动结构侧的管通过集中布置的配件连接到主体的上端表面，并且行进结构侧的管通过使用配件连接到主轴的下部。主体在其侧壁具有较厚的壁部，并且在较厚的壁部内部形成有与多个周向沟槽连通的多个轴向通道。多个轴向通道在主体的上端面开口，并且摆动结构侧的管以集中的布局连接到主体的上端面。

6. 发明申请

US20070024052A1 Swivel joint for construction machine 有权
标题翻译：建筑机械用旋转接头
公开(公告)号：US20070024052A1
公开(公告)日：2007-02-01
申请号：US10567908
申请日：2004-12-06
申请人： Junya Kawamoto , Kazuyoshi Yamada , Yasutaka Tsuruga , Kenji Itou
发明人： Junya Kawamoto , Kazuyoshi Yamada , Yasutaka Tsuruga , Kenji Itou
IPC分类号： F16L27/00
CPC分类号： E02F9/2275 , B66C23/84 , E02F9/006 , F16L27/093 , Y10T403/257
摘要： A swivel joint for a construction machine, is mounted to an upper track frame, and a body is rotatable together with a swing structure main frame in an opening through engagement between a stopper projection and a stopper plate. Tubes on the swing structure side are connected to an upper end surface of the body by using fittings in concentrated layout, and tubes on the travel structure side are connected to a lower portion of the spindle by using fittings. The body has thicker wall portions in sidewalls thereof, and a plurality of axial passages communicating with a plurality of circumferential grooves are formed inside the thicker wall portions. The plurality of axial passages are opened at the upper end surface of the body, and the tubes on the swing structure side are connected to the upper end surface of the body in concentrated layout.
摘要翻译：一种用于建筑机械的旋转接头安装在上部履带架上，并且主体通过止动器突起和止动板之间的接合而与摆动结构主框架一起旋转在开口中。摆动结构侧的管通过集中布置的配件连接到主体的上端表面，并且行进结构侧的管通过使用配件连接到主轴的下部。主体在其侧壁具有较厚的壁部，并且在较厚的壁部内部形成有与多个周向沟槽连通的多个轴向通道。多个轴向通道在主体的上端面开口，并且摆动结构侧的管以集中的布局连接到主体的上端面。

7. 发明授权

US06408622B1 Hydraulic drive device 有权
标题翻译：液压驱动装置
公开(公告)号：US06408622B1
公开(公告)日：2002-06-25
申请号：US09622957
申请日：2000-08-24
申请人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto , Satoshi Hamamoto , Yasuharu Okazaki , Yukiaki Nagao
发明人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto , Satoshi Hamamoto , Yasuharu Okazaki , Yukiaki Nagao
IPC分类号： F15B1306
CPC分类号： E02F9/2225 , E02F9/2207 , E02F9/2285 , E02F9/2296 , F15B11/0406 , F15B11/162 , F15B11/165 , F15B2211/20553 , F15B2211/20584 , F15B2211/255 , F15B2211/30505 , F15B2211/30535 , F15B2211/3111 , F15B2211/3144 , F15B2211/31576 , F15B2211/50527 , F15B2211/5153 , F15B2211/6054 , F15B2211/63 , F15B2211/6313 , F15B2211/6316 , F15B2211/7135
摘要： A hydraulic drive system having a swing control system, includes a pump control unit for controlling a pump delivery rate such that a pump delivery pressure is held a predetermined value higher than a maximum load pressure among a plurality of actuators. Pressure compensating valves are each constructed to set, as a target compensation differential pressure, a differential pressure between a delivery pressure of a hydraulic pump and a maximum load pressure among the actuators. A pressure compensating valve for a swing section is given such a load dependent characteristic that when the load pressure rises, the target compensation differential pressure is reduced, the load dependent characteristic being set so as to provide a flow rate characteristic simulating constant-horsepower control of a swing motor.
摘要翻译：具有摆动控制系统的液压驱动系统包括：泵控制单元，用于控制泵输送速率，使得泵输送压力保持在多个致动器中比最大负载压力高的预定值。压力补偿阀各自被构造成将作为目标补偿压差的液压泵的输送压力和致动器中的最大负载压力之间的压力设定为压力补偿阀。用于摆动部分的压力补偿阀具有这样的负载依赖特性：当负载压力升高时，目标补偿压差降低，负载相关特性被设定为提供模拟恒功率控制的流量特性摆动马达

8. 发明授权

US06772590B2 Hydraulic driving device 失效
标题翻译：液压驱动装置
公开(公告)号：US06772590B2
公开(公告)日：2004-08-10
申请号：US10220469
申请日：2002-08-30
申请人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto
发明人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto
IPC分类号： F16D3102
CPC分类号： E02F9/2225 , F04B2203/0209 , F04B2203/0605 , F04B2205/05 , F04B2205/08 , F15B11/165 , F15B2211/20538 , F15B2211/20576 , F15B2211/20584 , F15B2211/253 , F15B2211/30535 , F15B2211/30555 , F15B2211/3111 , F15B2211/351 , F15B2211/40507 , F15B2211/40515 , F15B2211/413 , F15B2211/41509 , F15B2211/50536 , F15B2211/50554 , F15B2211/50572 , F15B2211/5153 , F15B2211/5158 , F15B2211/528 , F15B2211/57 , F15B2211/575 , F15B2211/6054 , F15B2211/71
摘要： A differential pressure between a delivery pressure of a fixed displacement hydraulic pump 2 and a maximum load pressure among a plurality of actuators 3a to 3c is maintained at a target differential pressure by an unloading valve 5. A setting pressure of the unloading valve 5 is changed depending on an engine revolution speed by introducing a differential pressure &Dgr;Pp across a throttle 50, which is disposed in a delivery line of a fixed pump 30, to a pressure bearing sector 5d of the unloading valve. With such an arrangement, in a hydraulic drive system including an LS system, it is possible to ensure fine operability based on setting of the engine revolution speed, to perform flow rate control at a good response, and to realize superior operability.
摘要翻译：固定容积液压泵2的输送压力与多个致动器3a〜3c中的最大负荷压力之间的压差通过卸荷阀5保持在目标压差。卸载阀5的设定压力变化通过将设置在固定泵30的输送管线中的节流阀50上的差压DeltaPp引导到卸载阀的压力承受部分5d，这取决于发动机转速。通过这样的结构，在包括LS系统的液压驱动系统中，可以根据发动机转速的设定来确保精细的可操作性，以良好的响应进行流量控制，实现优异的可操作性。

9. 发明授权

US06192681B1 Hydraulic drive apparatus 失效
标题翻译：液压驱动装置
公开(公告)号：US06192681B1
公开(公告)日：2001-02-27
申请号：US09077552
申请日：1998-06-01
申请人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto
发明人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto
IPC分类号： F16D3102
CPC分类号： F15B11/05 , E02F9/2232 , E02F9/2285 , E02F9/2296 , F04B49/08 , F04B49/24 , F04B2203/0605 , F15B2211/20523 , F15B2211/20553 , F15B2211/253 , F15B2211/30535 , F15B2211/50536 , F15B2211/635 , F15B2211/71
摘要： A differential pressure &Dgr;PLS between a delivery pressure of a hydraulic pump 2 and a maximum load pressure among a plurality of actuators 3a-3c is maintained at a target differential pressure &Dgr;PLSref by pump displacement control means 5. The target differential pressure &Dgr;PLSref is modified depending on an engine rotational speed by introducing a differential pressure &Dgr;Pp across a throttle 50 disposed in a delivery line of a fixed pump 30. An unloading valve 80 has first and second auxiliary control pressure chambers 80e, 80f to which the differential pressure p across the throttle 50 is introduced, and a target differential pressure &Dgr;Pun of the unloading valve is also modified in match with change in the target differential pressure &Dgr;PLSref modified by the operation driver 32. Stable load sensing control is thereby achieved without being affected by the engine rotational speed.
摘要翻译：在液压泵2的输送压力和多个致动器3a-3c中的最大负载压力之间的差压DELTAPLS由泵容量控制装置5保持在目标压差DELTAPLSref。目标压差DELTAPLSref根据通过在设置在固定泵30的输送管线中的节流阀50上引入压差DELTAPp来实现发动机转速。卸载阀80具有第一和第二辅助控制压力室80e，80f，跨过节流阀50的差压p 并且还根据由操作驱动器32修改的目标压差DELTAPLSref的变化来修改卸载阀的目标压差DELTAPun。由此实现稳定的负载感测控制而不受发动机转速的影响。

10. 发明授权

US06176126B1 Engine speed control system for construction machine 失效
标题翻译：发动机转速控制系统
公开(公告)号：US06176126B1
公开(公告)日：2001-01-23
申请号：US09321217
申请日：1999-05-27
申请人： Yasutaka Tsuruga , Kenichiro Nakatani , Junya Kawamoto , Takashi Kanai
发明人： Yasutaka Tsuruga , Kenichiro Nakatani , Junya Kawamoto , Takashi Kanai
IPC分类号： G01M1500
CPC分类号： E02F9/2246 , E02F9/2239 , E02F9/2285 , E02F9/2292
摘要： An engine speed control system for a construction machine is arranged in association with its hydraulic circuit, which has main pumps, a communication line through which input ports of travel-controlling directional control valves are connected with each other, and a travel-controlling communication valve arranged in the communication line. The engine speed control system is provided with pilot valves arranged in a pilot line to control traveling, pilot valves arranged in a pilot line to control booms and the like, pilot valves arranged in a pilot line to control revolving, earth moving and the like, a pressure sensor for detecting pressures in the pilot lines, another pressure sensor for detecting a pressure in the pilot line, an engine controller for performing automatic idling control or its cancellation in accordance with signals from the pressure sensors, and a signal line for changing over the travel-controlling communication line into a communicating position in response to a pressure in the pilot valve.
摘要翻译：一种用于建筑机械的发动机转速控制系统与其具有主泵的液压回路相关联地设置有：行进控制方向控制阀的输入端口通过其彼此连接的通信线路，以及行驶控制连通阀布置在通信线路中。发动机转速控制系统配备有先导管路中的先导阀，用于控制配置在先导管路中的行驶式先导阀，以控制吊杆等，配置在先导管路中的先导阀，以控制回转，移动等，用于检测先导管路中的压力的压力传感器，用于检测先导管路中的压力的另一个压力传感器，根据来自压力传感器的信号执行自动空转控制或其消除的发动机控制器，以及用于切换的信号线行程控制通信线路响应于先导阀中的压力而进入通信位置。

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