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1. 发明授权

EP1162374B1 HYDRAULIC DRIVE DEVICE 有权
标题翻译：液压驱动系统
公开(公告)号：EP1162374B1
公开(公告)日：2003-12-03
申请号：EP01900635.2
申请日：2001-01-10
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TSURUGA, Yasutaka , KANAI, Takashi , KAWAMOTO, Junya , HAMAMOTO, Satoshi , OKAZAKI, Yasuharu , NAGAO, Yukiaki
IPC分类号： F15B11/05 , E02F9/22 , F15B11/16
CPC分类号： E02F9/226 , E02F9/2203 , E02F9/2232 , E02F9/2285 , E02F9/2296 , F15B11/163 , F15B2211/20553 , F15B2211/253 , F15B2211/30505 , F15B2211/30535 , F15B2211/3111 , F15B2211/351 , F15B2211/6054 , F15B2211/651 , F15B2211/71 , F15B2211/75

2. 发明公开

EP1162374A1 HYDRAULIC DRIVE DEVICE 有权
标题翻译： HYDRAULISCHE ANTRIEBSVORRICHTUNG
公开(公告)号：EP1162374A1
公开(公告)日：2001-12-12
申请号：EP01900635.2
申请日：2001-01-10
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TSURUGA, Yasutaka , KANAI, Takashi , KAWAMOTO, Junya , HAMAMOTO, Satoshi , OKAZAKI, Yasuharu , NAGAO, Yukiaki
IPC分类号： F15B11/00 , E02F9/22
CPC分类号： E02F9/226 , E02F9/2203 , E02F9/2232 , E02F9/2285 , E02F9/2296 , F15B11/163 , F15B2211/20553 , F15B2211/253 , F15B2211/30505 , F15B2211/30535 , F15B2211/3111 , F15B2211/351 , F15B2211/6054 , F15B2211/651 , F15B2211/71 , F15B2211/75
摘要： In a hydraulic drive system in which a target compensated differential pressure for each of pressure compensating valves 21a, 21b is set in accordance with a differential pressure between a pump delivery pressure and a maximum load pressure, and a target LS differential pressure is set as a variable value depending on a revolution speed of an engine 1, a fixed throttle 32 and a signal pressure variable relief valve 33 are disposed in a maximum load pressure line 35. A relief setting pressure P LMAX ' of the signal pressure variable relief valve 33 is set so as to satisfy P LMAX ' = P R - P GR + α (where α is a value smaller than P GR ) with respect to a target LS differential pressure P GR and a setting pressure P R of the main relief valve 30. Even when a load pressure of any one actuator reaches the setting pressure of the main relief valve during the combined operation in which a plurality of actuators are simultaneously driven, pressure compensating valves are not closed, the other actuators are not sped up, and good operability in the combined operation can be ensured.
摘要翻译：在液压驱动系统中，将压力补偿阀21a，21b中的每一个的目标补偿压差根据泵输送压力和最大负载压力之间的压差设定，并将目标LS压差设定为可变值取决于发动机1的转速，固定节流阀32和信号压力可变溢流阀33设置在最大负载压力线35中。信号压力可变溢流阀33的溢流设定压力PLMAX'被设定以便相对于目标LS差压PGR和主溢流阀30的设定压力PR满足PLMAX'= PR-PGR +α（其中α是小于PGR的值）。即使当任何一个致动器在组合操作期间达到主安全阀的设定压力，其中多个致动器同时被驱动，压力补偿阀不关闭，另一个执行器执行器不加速，可以确保组合操作良好的可操作性。

3. 发明公开

EP0877168A1 HYDRAULIC DRIVE APPARATUS 失效
标题翻译：水力发电系统
公开(公告)号：EP0877168A1
公开(公告)日：1998-11-11
申请号：EP97912461.7
申请日：1997-11-14
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TSURUGA, Yasutaka , KANAI, Takashi , KAWAMOTO, Junya
IPC分类号： F15B11/00
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 PLS between a discharge pressure of a hydraulic pump (2) and a maximum load pressure on a plurality of actuators (3a-3c) is maintained at a target differential pressure ΔPLSref by a pump capacity control device (5). The target differential pressure ΔPLSref is modified in accordance with the revolution speed of an engine (1) by conducting to an operation drive unit (32) a differential pressure ΔPp across a restriction (50) provided in a discharge passage of a fixed pump (30). An unloading valve (80) comprises first and second auxiliary control pressure chambers (80e, 80f), to which the differential pressure ΔPp across the restriction (50) is conducted, and a target differential pressure ΔPun for the unloading valve (80) is also modified according to the modification of the target differential pressure ΔPLSref caused by the operation drive unit (32). Accordingly, a stable load sensing control can be performed without being affected by the engine revolution speed.
摘要翻译：通过泵容量控制装置（5）将液压泵（2）的排出压力与多个致动器（3a-3c）上的最大负载压力之间的压差PLS保持在目标压差DELTA PLSref。目标压差DELTA PLSref根据发动机（1）的转速通过在设置在固定泵的排出通道中的限制（50）传导到操作驱动单元（32）的差压DELTA Pp而被修改（30）。卸载阀（80）包括第一和第二辅助控制压力室（80e，80f），跨过限制（50）的差压DELTA Pp被传导到该卸载阀（80e，80f）和用于卸载阀（80）的目标压差DELTA PUN 也根据由操作驱动单元（32）引起的目标压差DELTA PLSref的修改来修改。因此，可以在不受发动机转速的影响的情况下执行稳定的负载感测控制。

4. 发明授权

EP1058010B1 HYDRAULIC DRIVE DEVICE 有权
标题翻译：液压驱动装置
公开(公告)号：EP1058010B1
公开(公告)日：2006-12-20
申请号：EP99961406.8
申请日：1999-12-27
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TSURUGA, Yasutaka , KANAI, Takashi , KAWAMOTO, Junya , HAMAMOTO, Satoshi , OKAZAKI, Yasuharu , NAGAO, Yukiaki
IPC分类号： F15B11/05 , E02F9/22
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 device including a swing control system capable of accelerating it to a stationary state without any jerky swing operation at the time of starting of the swing operation, providing high energy efficiency, forming a stable swing system, and preventing a cost and space from increasing due to provision of additional circuits or complicated problem with circuit configuration from occurring, wherein a pump control device (18) is installed so as to control a discharge flow so that a pump discharge pressure becomes higher by a specified value than the max. load pressures of actuators (2 to 6), pressure compensating valves (12 to 16) are formed so that pressure differences between the discharge pressure of a hydraulic pump (1) and the max. load pressures of the actuators (2 to 6) are set as target compensating pressure differences, respectively, a load dependent characteristic which reduces the target compensating pressure differences when a load pressure rises is provided to the pressure compensating valve (12) of a swing section, and the load dependent characteristic is set so that a flow characteristic simulating the HP constant control of a swing motor can be obtained.
摘要翻译：本发明提供一种液压驱动装置，该液压驱动装置具备：摆动控制系统，其能够在摆动动作开始时不晃动地进行摆动动作而加速至静止状态，能量效率高，形成稳定的摆动系统，并且能够防止成本和空间由于提供附加电路而增加或者出现电路构造的复杂问题，其中安装泵控制装置（18）以便控制排放流量，使得泵排放压力变得比最大值大规定值。致动器（2至6）的负荷压力，压力补偿阀（12至16）形成为使得液压泵（1）的排放压力与最大压力将致动器（2至6）的负载压力分别设定为目标补偿压力差，当负载压力升高时减小目标补偿压差的负载依赖特性被提供给摆动部分的压力补偿阀（12）并且负载依赖特性被设定为使得可以获得模拟回转马达的HP恒定控制的流量特性。

5. 发明授权

EP1164297B1 HYDRAULIC DRIVING DEVICE 有权
标题翻译：液压驱动系统
公开(公告)号：EP1164297B1
公开(公告)日：2005-08-31
申请号：EP01946922.0
申请日：2001-01-24
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： NAKATANI, Kenichiro , KANAI, Takashi , TSURUGA, Yasutaka , KAWAMOTO, Junya , HAMAMOTO, Satoshi , OKAZAKI, Yasuharu , NAGAO, Yukiaki
IPC分类号： F15B11/00 , F15B11/05 , E02F9/22 , F15B11/16 , F15B20/00
CPC分类号： F15B11/167 , E02F9/22 , E02F9/2225 , E02F9/2232 , E02F9/226 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/05 , F15B11/165 , F15B2211/20553 , F15B2211/20584 , F15B2211/253 , F15B2211/30505 , F15B2211/30535 , F15B2211/30555 , F15B2211/3105 , F15B2211/3144 , F15B2211/31576 , F15B2211/324 , F15B2211/329 , F15B2211/355 , F15B2211/40507 , F15B2211/6054 , F15B2211/6055 , F15B2211/6346 , F15B2211/6355
摘要： A hydraulic driving device, comprising a pressure compensating valve in an LS system, wherein an actuator lock switching valve (50), allowing a drain line (52) and a pilot line (53) to communicate with each other when the valve is switched to position (C) and allowing pilot lines (51) and (53) to communicate with each other when the valve is switched to position (D), is provided therein, the pilot line (51) is connected to a delivery line (7) of a hydraulic pump (10), the pilot line (53) is connected to pressure receiving parts (28a, 28b) provided at the closing operation side end part of pressure compensating valves (21a, 21b), and the actuator lock switching valve (50) having a pressure receiving part (55) connected to the output side of a pilot lock switching valve (43) is switched in conjunction with the switching of the switching valve (43), whereby, even when the drive device contains a directional control valve of mechanical switching system or a directional control valve of mechanical switching system is added, the actuator can be locked with a simple structure so as to prevent an erroneous operation from occurring when the drive device is not operated during engine driving.

7. 发明公开

EP1054162A1 HYDRAULIC DRIVING UNIT 有权
标题翻译：水ES。。
公开(公告)号：EP1054162A1
公开(公告)日：2000-11-22
申请号：EP99958478.2
申请日：1999-12-02
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TSURUGA, Yasutaka , KANAI, Takashi , KAWAMOTO, Junya , NAKATANI, Kenichiro , TAKAHASHI, Kiwamu , HAMAMOTO, Satoshi , OKAZAKI, Yasuharu , NAGAO, Yukiaki
IPC分类号： F15B11/00 , F15B11/16 , E02F9/22
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 driving unit comprising a pump controller (18) controlling the discharge flow rate such that the pump discharge pressure is higher than the maximum load pressures in actuators(2-6) by a predetermined amount, and pressure compensation valves (12 - 16) having respective differential pressures between the discharge pressure of a hydraulic pump (1) and the maximum load pressures of the actuators (2-6) set to target compensation differential pressures, the pressure compensation valve (12) having a load-dependent characteristic that reduces the target compensation differential pressure when the load pressure increases, the pressure compensation valve (12) of the swing section being provided with a lower-limit setting spring (55) for preventing the target compensation differential pressure from lowering below a predetermined value. Thereby, the system is provided that permits acceleration without jerks at both the start for swing alone and the start for swing combination suppresses changes in the swing speed during transition from swing alone to combination, permits, at the start for swing combination, acceleration without extremely reducing the swing speed as compared with other actuators, and presents no problem, such as increases in cost and space or complicated circuit arrangement.
摘要翻译：一种液压驱动单元，包括：泵控制器（18），其控制排出流量，使得泵排出压力高于致动器（2-6）中的最大负载压力预定量;以及压力补偿阀（12-16）在液压泵（1）的排出压力和设定为目标补偿差压的致动器（2-6）的最大负载压力之间具有相应的压差，压力补偿阀（12）具有减小的负载相关特性当负载压力增加时的目标补偿压差，摆动部分的压力补偿阀（12）设置有用于防止目标补偿压差降低到预定值以下的下限设定弹簧（55）。因此，提供了一种系统，其允许在起动时单独进行加速而没有颠簸，并且摆动组合的开始抑制从单独摆动到组合的转变期间的摆动速度的变化，允许在起动时的摆动组合，加速度没有极大与其他执行器相比降低摆动速度，并且不存在成本和空间的增加或电路布置复杂的问题。

8. 发明公开

EP2840188A1 WORK MACHINE 有权转让
标题翻译： ARBEITSMASCHINE
公开(公告)号：EP2840188A1
公开(公告)日：2015-02-25
申请号：EP12869914.7
申请日：2012-10-03
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： KOKURYO, Osamu , KAWAMOTO, Junya , MIYAHARA, Yasuhiro
IPC分类号： E02F9/00 , E02F9/18
CPC分类号： E02F9/0866 , E02F3/325 , E02F9/18 , F01N13/001 , F01N13/082 , F01N2590/08
摘要： Provided is a working machine, which can release exhaust gas at a position above a counterweight even if no space is secured for the installation of an exhaust pipe on an upperstructure or on an upper wall of the counterweight, and which can suppress heating of the counterweight by exhaust gas. The working machine is provided with a muffler (10) into which exhaust gas is guided from an engine, and a tailpipe (11) connected to the muffler (10). Defined through a counterweight (7) is a passage (7a) in which the tailpipe (11) is inserted. The working machine is further provided with an exhaust pipe holding member (12) and an exhaust pipe (13). The exhaust pipe holding member (12) is attached to an outer side wall of the counterweight (7), and has a passage (12a) which is in communication with the passage (7a) of the counterweight (7) and in which the tailpipe (11) is inserted. The exhaust pipe (13) is disposed and held upright on the exhaust pipe holding member (12), and has a lower part, in which the tailpipe (11) is inserted, and an upper part defining therein an exhaust outlet (13a) through which the exhaust gas guided via the tailpipe (11) is released.
摘要翻译：本发明提供一种工作机械，即使在配重的上部结构或上壁上设置排气管没有空间的情况下也可以在配重上方的位置上排出废气，能够抑制配重的加热通过废气。工作机设置有消声器（10），废气从发动机引导到该消音器（10）中，而排气管（11）连接到消声器（10）。通过配重（7）定义的是其中插入排气管（11）的通道（7a）。工作机械还设置有排气管保持构件（12）和排气管（13）。排气管保持构件（12）安装在配重（7）的外侧壁上，并且具有与配重（7）的通道（7a）连通的通道（12a），其中排气管（11）。排气管（13）直立放置在排气管保持构件（12）上，并具有插入排气管（11）的下部和限定有排气出口（13a）的上部通过尾管（11）引导的排气被释放。

9. 发明授权

EP0877168B1 HYDRAULIC DRIVE SYSTEM 失效
标题翻译：液压驱动系统
公开(公告)号：EP0877168B1
公开(公告)日：2004-02-11
申请号：EP97912461.7
申请日：1997-11-14
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TSURUGA, Yasutaka , KANAI, Takashi , KAWAMOTO, Junya
IPC分类号： F15B11/00 , E02F9/22
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

10. 发明公开

EP1058010A1 HYDRAULIC DRIVE DEVICE 有权
标题翻译： HYDRAULISCHER ANTRIEB
公开(公告)号：EP1058010A1
公开(公告)日：2000-12-06
申请号：EP99961406.8
申请日：1999-12-27
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TSURUGA, Yasutaka , KANAI, Takashi , KAWAMOTO, Junya , HAMAMOTO, Satoshi , OKAZAKI, Yasuharu , NAGAO, Yukiaki
IPC分类号： F15B11/05 , E02F9/22
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 device including a swing control system capable of accelerating it to a stationary state without any jerky swing operation at the time of starting of the swing operation, providing high energy efficiency, forming a stable swing system, and preventing a cost and space from increasing due to provision of additional circuits or complicated problem with circuit configuration from occurring, wherein a pump control device (18) is installed so as to control a discharge flow so that a pump discharge pressure becomes higher by a specified value than the max. load pressures of actuators (2 to 6), pressure compensating valves (12 to 16) are formed so that pressure differences between the discharge pressure of a hydraulic pump (1) and the max. load pressures of the actuators (2 to 6) are set as target compensating pressure differences, respectively, a load dependent characteristic which reduces the target compensating pressure differences when a load pressure rises is provided to the pressure compensating valve (12) of a swing section, and the load dependent characteristic is set so that a flow characteristic simulating the HP constant control of a swing motor can be obtained.
摘要翻译：一种液压驱动装置，其包括能够在起动摆动操作时不产生任何急剧的摆动操作而将其加速到静止状态的摆动控制系统，提供高能量效率，形成稳定的摆动系统，并且防止成本和空间由于提供附加电路而增加，或者发生电路配置的复杂问题，其中安装泵控制装置（18）以便控制排出流量，使得泵排出压力变得高于最大值的指定值。形成致动器（2〜6），压力补偿阀（12〜16）的负荷压力，使得液压泵（1）的排出压力与最大压力之间的压力差。致动器（2〜6）的负载压力分别被设定为目标补偿压力差，当将负载压力上升时将目标补偿压力差降低的负载相关特性提供给摆动部分的压力补偿阀（12），并且设定负载相关特性，使得可以获得模拟摆动马达的HP恒定控制的流量特性。

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