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公开(公告)号：US09249879B2
公开(公告)日：2016-02-02
申请号：US13805913
申请日：2011-07-26
IPC分类号： F16D31/02 , F16H61/4043 , F16H61/4052 , F16H61/4061 , E02F9/12 , E02F9/22 , F15B11/04 , E02F3/96
CPC分类号： F16H61/4043 , E02F3/962 , E02F9/123 , E02F9/128 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/0406 , F15B2211/20546 , F15B2211/50527 , F15B2211/613 , F15B2211/7058 , F16H61/4052 , F16H61/4061
摘要： A hydraulic drive system designed so that while maintaining intact a structure of a relief valve having a shockless function, the drive unit hydraulic drive system facilitates changing a driving pressure or braking pressure of a hydraulic swing motor and hence, changing a maximum driving torque or braking torque of the hydraulic swing motor. Inside a swing motor unit is arranged a first swinging relief valve provided with a shockless function to limit a driving pressure or braking pressure of the hydraulic swing motor in order to prevent the pressure from exceeding a first setting pressure. Also, a second swinging relief valve is provided for limiting the driving pressure or braking pressure of the hydraulic swing motor in order to prevent the pressure from exceeding a second setting pressure that is lower than the first setting pressure.
摘要翻译： 一种液压驱动系统，其设计成在保持完整的具有无震动功能的安全阀的结构的同时，驱动单元液压驱动系统有助于改变液压回转马达的驱动压力或制动压力，因此改变最大驱动转矩或制动 液压回转马达的扭矩。 在摆动马达单元内设置有第一摆动释放阀，其具有无震动功能，以限制液压摆动马达的驱动压力或制动压力，以防止压力超过第一设定压力。 而且，为了防止压力超过低于第一设定压力的第二设定压力，设置有用于限制液压回转马达的驱动压力或制动压力的第二摆动安全阀。
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公开(公告)号：US20130139678A1
公开(公告)日：2013-06-06
申请号：US13805913
申请日：2011-07-26
IPC分类号： E02F9/22
CPC分类号： F16H61/4043 , E02F3/962 , E02F9/123 , E02F9/128 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/0406 , F15B2211/20546 , F15B2211/50527 , F15B2211/613 , F15B2211/7058 , F16H61/4052 , F16H61/4061
摘要： A hydraulic drive system designed so that while maintaining intact a structure of a relief valve having a shockless function, the drive unit hydraulic drive system facilitates changing a driving pressure or braking pressure of a hydraulic swing motor and hence, changing a maximum driving torque or braking torque of the hydraulic swing motor. Inside a swing motor unit is arranged a first swinging relief valve provided with a shockless function to limit a driving pressure or braking pressure of the hydraulic swing motor in order to prevent the pressure from exceeding a first setting pressure. Also, a second swinging relief valve is provided for limiting the driving pressure or braking pressure of the hydraulic swing motor in order to prevent the pressure from exceeding a second setting pressure that is lower than the first setting pressure.
摘要翻译： 一种液压驱动系统，其设计成在保持完整的具有无震动功能的安全阀的结构的同时，驱动单元液压驱动系统有助于改变液压回转马达的驱动压力或制动压力，因此改变最大驱动转矩或制动 液压回转马达的扭矩。 在摆动马达单元内设置有第一摆动释放阀，其具有无震动功能，以限制液压摆动马达的驱动压力或制动压力，以防止压力超过第一设定压力。 而且，为了防止压力超过低于第一设定压力的第二设定压力，设置有用于限制液压回转马达的驱动压力或制动压力的第二摆动安全阀。
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公开(公告)号：US20140188321A1
公开(公告)日：2014-07-03
申请号：US14239795
申请日：2012-08-10
申请人： Seiji Ishida , Hideloshi Satake , Yusuke Kajita , Shiro Yamaoka
发明人： Seiji Ishida , Hideloshi Satake , Yusuke Kajita , Shiro Yamaoka
CPC分类号： E02F9/2075 , B60K6/485 , B60L1/003 , B60L7/14 , B60L15/20 , B60L15/2009 , B60L50/40 , B60L50/61 , B60L58/13 , B60L2200/40 , B60L2220/14 , B60L2220/42 , B60L2240/421 , B60L2240/423 , B60L2240/443 , B60L2240/445 , B60L2240/549 , B60L2240/80 , B60L2270/12 , B60W10/06 , B60W10/08 , B60W20/00 , B60W20/16 , B60W2050/0055 , B60W2300/17 , B60W2510/0657 , B60W2510/0661 , B60W2510/081 , B60W2510/083 , B60W2510/30 , B60W2710/081 , E02F3/32 , E02F9/207 , Y02T10/6217 , Y02T10/6226 , Y02T10/6286 , Y02T10/645 , Y02T10/646 , Y02T10/7005 , Y02T10/7022 , Y02T10/7044 , Y02T10/705 , Y02T10/7077 , Y02T10/72 , Y02T10/7275 , Y10S903/902
摘要： An object of the present invention is to provide a construction machine that can reduce particulate matter (PM) or nitrogen oxide (NOx) discharged from an internal combustion engine mounted on the construction machine.The construction machine 200 includes a diesel engine 101 controlled based on a torque command, an electric motor 102 mechanically connected to the diesel engine, an electric energy storage device 111 that supplies electric power to the electric motor, and a hydraulic pump 103. The construction machine performs work by driving the hydraulic pump using the diesel engine and the electric motor. A speed control device 118 controls a speed of the electric motor 102 based on a speed command. A torque limiter 115 obtains the torque command having a rate of change with time limited based on a torque target.
摘要翻译： 本发明的目的是提供一种可以减少从安装在施工机械上的内燃机排出的颗粒物（PM）或氮氧化物（NOx）的施工机械。 施工机械200包括基于转矩指令控制的柴油发动机101，机械地连接到柴油发动机的电动机102，向电动机供给电力的电力存储装置111以及液压泵103。 机器通过使用柴油发动机和电动机驱动液压泵来执行工作。 速度控制装置118基于速度指令来控制电动机102的速度。 转矩限制器115基于转矩目标获得具有时间限制的变化率的转矩指令。
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公开(公告)号：US08336443B2
公开(公告)日：2012-12-25
申请号：US12428203
申请日：2009-04-22
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。
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公开(公告)号：US07434394B2
公开(公告)日：2008-10-14
申请号：US10553414
申请日：2004-04-16
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。
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公开(公告)号：US20080223205A1
公开(公告)日：2008-09-18
申请号：US10567583
申请日：2004-08-05
申请人： Yusuke Kajita , Kouji Ishikawa , Hideo Karasawa
发明人： Yusuke Kajita , Kouji Ishikawa , Hideo Karasawa
IPC分类号： F15B11/00
CPC分类号： F15B11/024 , E02F9/2225 , E02F9/2296 , F15B11/16 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/30525 , F15B2211/3058 , F15B2211/3116 , F15B2211/31576 , F15B2211/329 , F15B2211/40507 , F15B2211/40515 , F15B2211/41545 , F15B2211/428 , F15B2211/6355 , F15B2211/7114 , F15B2211/88
摘要： A hydraulic drive system is mounted on a hydraulic excavator, and is provided with a directional control valve 23 for a boom, a directional control valve 24 for an arm, a boom control device 25 for selectively controlling the directional control valve 23 for the boom, and an arm control device 26 for selectively controlling the directional control valve 24 for the arm. The directional control valves 23,24 control a boom cylinder 6 and an arm cylinder 7, respectively, which are driven by pressure oil delivered from a main hydraulic pump 21. The hydraulic drive system is provided with a communication control means for communicating a rod chamber 6b of the boom cylinder 6 and a bottom chamber 7a of the arm cylinder 7 with each other when a stroke of the arm control device 26 has become a predetermined amount S or greater. The communication control means has made it possible to effectively use pressure oil in the rod chamber of the first hydraulic cylinder, which was conventionally drained into a reservoir, irrespective of the level of a bottom pressure in the second hydraulic cylinder upon performing a combined operation that pressure oil is fed to a bottom chamber of the first hydraulic cylinder and the bottom chamber of the second hydraulic cylinder.
摘要翻译： 液压驱动系统安装在液压挖掘机上，并具有用于起重臂的方向控制阀23，用于臂的方向控制阀24，用于选择性地控制动臂用方向控制阀23的动臂控制装置25， 以及用于选择性地控制臂的方向控制阀24的臂控制装置26。 方向控制阀23,24分别控制由从主液压泵21输送的压力油驱动的动臂缸6和斗杆缸7。 液压驱动系统设置有通信控制装置，用于当臂控制装置26的行程变为预定位置时，将臂臂6的杆室6b和臂气缸7的底部腔室7a相互连通， 数量S以上。 通信控制装置使得可以有效地使用常规排放到储存器中的第一液压缸的杆室中的压力油，而不管第二液压缸中的底部压力的水平如何，在执行组合操作时 压力油被供给到第一液压缸的底部室和第二液压缸的底部室。
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公开(公告)号：US20070028607A1
公开(公告)日：2007-02-08
申请号：US10553414
申请日：2004-04-16
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。
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公开(公告)号：US07127888B2
公开(公告)日：2006-10-31
申请号：US10520144
申请日：2003-07-09
申请人： Yusuke Kajita , Kazunori Nakamura , Toichi Hirata
发明人： Yusuke Kajita , Kazunori Nakamura , Toichi Hirata
IPC分类号： F16D31/02
CPC分类号： F15B11/06 , E02F9/2228 , E02F9/226 , E02F9/2285 , E02F9/2296 , F15B11/024 , F15B11/028 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/30525 , F15B2211/3058 , F15B2211/3116 , F15B2211/31576 , F15B2211/329 , F15B2211/40507 , F15B2211/40515 , F15B2211/41545 , F15B2211/428 , F15B2211/6355 , F15B2211/7114 , F15B2211/88
摘要： A hydraulic drive unit is provided with a boom cylinder, an arm cylinder, a communication line communicating a rod chamber of the boom cylinder and a bottom chamber of the arm cylinder with each other, and a switching valve arranged on the communication line for communicating or shutting off the communication line in accordance with a rod pressure of the boom cylinder. When an arm-crowding single operation is performed and by its digging counterforce, a rod pressure of the boom cylinder rises to a high pressure of at least a predetermined pressure, the switching valve is changed over from a shut-off position to a communicating position to feed pressure oil from the rod chamber to the bottom chamber. The boom cylinder is hence caused to automatically extend, thereby avoiding lifting of a hydraulic excavator body.
摘要翻译： 液压驱动单元设置有动臂缸，斗杆缸，将动臂缸的杆室与臂缸的底部室连通的连通路，以及设置在通信线路上的切换阀，用于连通或 根据动臂缸的杆压力关闭通信线路。 当执行搂抱单次操作并且通过其挖掘反作用力时，动臂缸的杆压力升至至少预定压力的高压，则切换阀从关闭位置切换到连通位置 以将压力油从杆室供给到底室。 因此，动臂缸被自动延伸，从而避免了液压挖掘机主体的提升。
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公开(公告)号：US20060162543A1
公开(公告)日：2006-07-27
申请号：US10542201
申请日：2004-01-14
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。
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公开(公告)号：US20050144938A1
公开(公告)日：2005-07-07
申请号：US10520144
申请日：2003-07-09
申请人： Yusuke Kajita , Kazunori Nakamura , Toichi Hirata
发明人： Yusuke Kajita , Kazunori Nakamura , Toichi Hirata
IPC分类号： E02F9/22 , F15B11/024 , F15B11/028 , F15B11/06 , F15B21/14 , F16D31/02
CPC分类号： F15B11/06 , E02F9/2228 , E02F9/226 , E02F9/2285 , E02F9/2296 , F15B11/024 , F15B11/028 , F15B21/14 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/30525 , F15B2211/3058 , F15B2211/3116 , F15B2211/31576 , F15B2211/329 , F15B2211/40507 , F15B2211/40515 , F15B2211/41545 , F15B2211/428 , F15B2211/6355 , F15B2211/7114 , F15B2211/88
摘要： To permit releasing an excessive rod pressure from a first hydraulic cylinder and also effectively using pressure oil of its rod chamber upon performing such an operation that pressure oil is fed to a bottom chamber of a second hydraulic cylinder, a hydraulic drive unit is provided with a boom cylinder, an arm cylinder, a communication line communicating a rod chamber of the boom cylinder and a bottom chamber of the arm cylinder with each other, and a switching valve arranged on the communication line for communicating or shutting off the communication line in accordance with a rod pressure of the boom cylinder. When an arm-crowding single operation is performed and by its digging counterforce, a rod pressure of the boom cylinder rises to a high pressure of at least a predetermined pressure, the switching valve is changed over from a shut-off position to a communicating position to feed pressure oil from the rod chamber of the boom cylinder to the bottom chamber of the arm cylinder. The boom cylinder is hence caused to automatically extend, thereby avoiding lifting of a body of a hydraulic excavator.
摘要翻译： 为了允许从第一液压缸释放过大的杆压力，并且在执行将压力油供给到第二液压缸的底部室的操作时，还可以有效地使用其杆室的压力油，液压驱动单元设置有 动臂缸，斗杆缸，将动臂缸的杆室与斗杆缸的底部室连通的连通管线，以及设置在通信线路上的切换阀，用于根据通信线路进行通信或切断通信线路 动臂缸的杆压力。 当执行搂紧单次操作并且通过其挖掘反作用力时，动臂缸的杆压力升至至少预定压力的高压，切换阀从关闭位置切换到连通位置 将压力油从动臂缸的杆室输送到臂缸的底部腔室。 因此，动臂缸被自动延伸，从而避免了液压挖掘机的主体的提升。
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