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1. 发明授权

US09187880B2 Electric drive unit for construction machine 有权
标题翻译：建筑机械电动机组
公开(公告)号：US09187880B2
公开(公告)日：2015-11-17
申请号：US14113921
申请日：2012-05-10
申请人： Yasutaka Tsuruga , Kiwamu Takahashi , Tatsuo Takishita , Hajime Kurikuma
发明人： Yasutaka Tsuruga , Kiwamu Takahashi , Tatsuo Takishita , Hajime Kurikuma
IPC分类号： E02F3/22 , E02F9/20 , E02F3/30 , E02F9/22 , E02F3/32
CPC分类号： E02F9/2296 , E02F3/325 , E02F9/207 , E02F9/2091 , E02F9/2217
摘要： An electric drive unit for a construction machine is capable of increasing the operating time of the construction machine. The electric drive unit has an electricity storage device, a hydraulic pump of variable displacement type which is driven by a motor/generator, a regulator which performs variable control on the displacement volume of the hydraulic pump, a bidirectional converter which performs variable control on the revolution speed of the motor/generator, and an LS control device which controls the regulator and the bidirectional converter so that LS differential pressure Pls equals a target value Pgr. The bidirectional converter performs regeneration control for converting the inertial force of the rotor of the motor/generator into electric power thereby charging the electricity storage device when the revolution speed of the motor/generator is decreased in response to an excess of the LS differential pressure Pls over the target value Pgr.
摘要翻译：用于建筑机械的电驱动单元能够增加施工机械的操作时间。电驱动单元具有蓄电装置，由电动机/发电机驱动的可变排量型液压泵，对液压泵的排量进行可变控制的调节器，对该液压泵进行变量控制的双向转换器马达/发电机的转速以及控制调节器和双向转换器的LS控制装置，使得LS压差P1s等于目标值Pgr。双向转换器执行用于将电动机/发电机的转子的惯性力转换成电力的再生控制，从而当电动机/发电机的转速响应于LS压差P1s过大而减小时对蓄电装置充电超过目标值Pgr。

2. 发明申请

US20140052350A1 ELECTRIC DRIVE UNIT FOR CONSTRUCTION MACHINE 有权
标题翻译：建筑机械电驱动装置
公开(公告)号：US20140052350A1
公开(公告)日：2014-02-20
申请号：US14113921
申请日：2012-05-10
申请人： Yasutaka Tsuruga , Kiwamu Takahashi , Tatsuo Takishita , Hajime Kurikuma
发明人： Yasutaka Tsuruga , Kiwamu Takahashi , Tatsuo Takishita , Hajime Kurikuma
IPC分类号： E02F9/22
CPC分类号： E02F9/2296 , E02F3/325 , E02F9/207 , E02F9/2091 , E02F9/2217
摘要： An electric drive unit for a construction machine is capable of increasing the operating time of the construction machine. The electric drive unit has an electricity storage device, a hydraulic pump of variable displacement type which is driven by a motor/generator, a regulator which performs variable control on the displacement volume of the hydraulic pump, a bidirectional converter which performs variable control on the revolution speed of the motor/generator, and an LS control device which controls the regulator and the bidirectional converter so that LS differential pressure Pls equals a target value Pgr. The bidirectional converter performs regeneration control for converting the inertial force of the rotor of the motor/generator into electric power thereby charging the electricity storage device when the revolution speed of the motor/generator is decreased in response to an excess of the LS differential pressure Pls over the target value Pgr.
摘要翻译：用于建筑机械的电驱动单元能够增加施工机械的操作时间。电驱动单元具有蓄电装置，由电动机/发电机驱动的可变排量型液压泵，对液压泵的排量进行可变控制的调节器，对该液压泵进行变量控制的双向转换器马达/发电机的转速以及控制调节器和双向转换器的LS控制装置，使得LS压差P1s等于目标值Pgr。双向转换器执行用于将电动机/发电机的转子的惯性力转换成电力的再生控制，从而当电动机/发电机的转速响应于LS压差P1s过大而减小时对蓄电装置充电超过目标值Pgr。

3. 发明申请

US20120031088A1 HYDRAULIC DRIVE SYSTEM FOR CONSTRUCTION MACHINE 审中-公开
标题翻译：液压驱动系统
公开(公告)号：US20120031088A1
公开(公告)日：2012-02-09
申请号：US13127333
申请日：2010-09-14
申请人： Yoshifumi Takebayashi , Yasutaka Tsuruga , Kiwamu Takahashi , Kazushige Mori
发明人： Yoshifumi Takebayashi , Yasutaka Tsuruga , Kiwamu Takahashi , Kazushige Mori
IPC分类号： F15B21/08
CPC分类号： E02F9/2225 , E02F9/2228 , F15B2211/3116 , F15B2211/355 , F15B2211/50554 , F15B2211/575 , F15B2211/6355
摘要： A hydraulic drive system for a construction machine allows automatic changes of the operational characteristics of a boom directional control valve by judging whether or not a hydraulic boom cylinder needs driving pressure at the time of a boom lowering operation.A solenoid switch valve is controlled such that a pilot oil passage with a pressure reducing valve is selected to set the limit of a boom-lowering spool stroke of a boom directional control valve to a middle position L1 when the rod-side pressure of a hydraulic boom cylinder detected by a pressure sensor is less than a threshold value and such that a pilot oil passage is selected to set the limit of the boom-lowering spool stroke of the boom directional control valve to a maximum stroke position L2 when the rod-side pressure is equal to or greater than the threshold value.
摘要翻译：用于施工机械的液压驱动系统通过判断液压动臂缸是否需要动臂下降操作时的驱动压力来自动改变动臂方向控制阀的操作特性。控制电磁开关阀，使得具有减压阀的先导油路被选择成将动臂方向控制阀的起重臂下降滑阀行程的极限设定在中间位置L1，当液压的杆侧压力由压力传感器检测到的动臂缸小于阈值，并且选择先导油路以将动臂式换向阀的动臂下降滑阀行程的极限设定为最大行程位置L2，当杆侧压力等于或大于阈值。

4. 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。

5. 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。

6. 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。

7. 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。

8. 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。

9. 发明授权

US6105367A Hydraulic drive system 失效
标题翻译：液压驱动系统
公开(公告)号：US6105367A
公开(公告)日：2000-08-22
申请号：US77468
申请日：1998-05-29
申请人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto
发明人： Yasutaka Tsuruga , Takashi Kanai , Junya Kawamoto
IPC分类号： E02F9/22 , F04B49/08 , F15B11/16 , F16D31/02
CPC分类号： F15B11/165 , E02F9/2225 , E02F9/2232 , E02F9/2292 , E02F9/2296 , F04B49/08 , F04B2203/0605 , F04B2205/08 , F15B2211/20538 , F15B2211/20553 , F15B2211/253 , F15B2211/30535 , F15B2211/3111 , F15B2211/31576 , F15B2211/351 , F15B2211/575 , F15B2211/6054 , F15B2211/6355 , F15B2211/7053 , F15B2211/71
摘要： A hydraulic drive system wherein differential pressures across flow control valves are controlled by pressure compensating valves to become the same value, i.e., a differential pressure .DELTA.PLS, and the differential pressure .DELTA.PLS is maintained at a target differential pressure .DELTA.PLSref by a pump displacement control system. For modifying the target differential pressure .DELTA.PLSref depending on change in rotational speed of an engine, a flow rate detecting valve is disposed intermediate between delivery lines of a fixed displacement hydraulic pump and a differential pressure .DELTA.Pp across a variable throttle of the flow rate detecting valve is introduced to a setting modifying unit to thereby modify the target differential pressure .DELTA.PLSref. The flow rate detecting valve changes an opening area of the variable throttle depending on the differential pressure .DELTA.Pp depending on the rotational speed of the engine.
摘要翻译： PCT No.PCT / JP97 / 04153 Sec。 371日期：1998年5月29日 102（e）日期1998年5月29日PCT 1997年11月14日PCT PCT。公开号WO98 / 22716 PCT 日期1998年5月28日一种液压驱动系统，其中跨越流量控制阀的压差由压力补偿阀控制成为相同的值，即差压DELTA PLS，差压DELTA PLS保持在目标压差DELTA PLSref 通过泵排量控制系统。为了根据发动机的转速的变化来修正目标压差DELTA PLSref，流量检测阀设置在固定容积型液压泵的输出管线和差压压力DELTA Pp之间，跨越流量检测的可变节气门阀被引入到设定修正单元，从而改变目标压差DELTA PLSref。流量检测阀根据发动机的转速，根据压差DELTA Pp来改变可变节流阀的开度面积。

10. 发明授权

US09347203B2 Electric drive unit for construction machine 有权
标题翻译：建筑机械电动机组
公开(公告)号：US09347203B2
公开(公告)日：2016-05-24
申请号：US14113658
申请日：2012-05-10
申请人： Yasutaka Tsuruga , Kiwamu Takahashi , Tatsuo Takishita , Hajime Kurikuma
发明人： Yasutaka Tsuruga , Kiwamu Takahashi , Tatsuo Takishita , Hajime Kurikuma
IPC分类号： E02F3/32 , E02F9/20 , E02F9/22 , B60L1/00 , B60L7/14 , B60L11/18 , B60L15/20
CPC分类号： E02F9/2246 , B60L1/003 , B60L7/14 , B60L11/1846 , B60L15/2009 , B60L2200/40 , B60L2240/421 , B60L2250/24 , B60L2270/142 , B60L2270/145 , E02F3/325 , E02F9/207 , E02F9/2091 , Y02T10/642 , Y02T10/645 , Y02T10/7005 , Y02T10/7072 , Y02T10/7275 , Y02T90/121 , Y02T90/128 , Y02T90/14 , Y02T90/163 , Y02T90/169 , Y04S30/14
摘要： An electric drive unit for a construction machine is capable of increasing the operating time of the construction machine. The electric drive unit has an electricity storage device, a hydraulic pump of the fixed displacement type which is driven by a motor/generator, a plurality of directional control valves which respectively control the flow of hydraulic fluid supplied to a plurality of hydraulic actuators, a bidirectional converter which performs variable control on the revolution speed of the motor/generator, and an LS control device which controls the bidirectional converter so that LS differential pressure Pls equals a target value Pgr. The bidirectional converter performs regeneration control for converting the inertial force of the rotor of the motor/generator into electric power thereby charging the electricity storage device when the revolution speed of the motor/generator is decreased in response to an excess of the LS differential pressure Pls over the target value Pgr.
摘要翻译：用于建筑机械的电驱动单元能够增加施工机械的操作时间。电驱动单元具有蓄电装置，由电动机/发电机驱动的固定排量型的液压泵，分别控制供给多个液压致动器的液压流体的流量的多个方向控制阀，双向转换器，其对电动机/发电机的转速进行可变控制;以及LS控制装置，其控制双向转换器，使得LS压差P1s等于目标值Pgr。双向转换器执行用于将电动机/发电机的转子的惯性力转换成电力的再生控制，从而当电动机/发电机的转速响应于LS压差P1s过大而减小时对蓄电装置充电超过目标值Pgr。

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