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131. 发明授权

US09957982B2 Lifting device 有权
公开(公告)号：US09957982B2
公开(公告)日：2018-05-01
申请号：US14436263
申请日：2012-10-18
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Yuki Ueda , Tsutomu Matsuo , Hirohiko Ishikawa
IPC分类号： F15B11/04 , B66F9/22
CPC分类号： F15B11/0413 , B66F9/22 , F15B2211/20569 , F15B2211/30505 , F15B2211/30515 , F15B2211/3057 , F15B2211/353 , F15B2211/355 , F15B2211/46 , F15B2211/473 , F15B2211/7052 , F15B2211/8606
摘要： An electromagnetic switching valve, for which the maximum opening is set to be small, is disposed on piping between a lift cylinder and a hydraulic pump motor. A pilot check valve, for which the maximum opening is set to be larger than the electromagnetic switching valve, is disposed on piping, different from the piping, between the lift cylinder and the hydraulic pump motor. In addition, during lowering operations, first, the electromagnetic switching valve is opened, and then after the same is opened, the pilot check valve is opened after a prescribed time has passed. Thus, the shock generated when lowering an object to be raised/lowered is reduced and a fork is operated quickly.

132. 发明授权

US09835179B2 Hydraulic valve arrangement 有权
公开(公告)号：US09835179B2
公开(公告)日：2017-12-05
申请号：US14785887
申请日：2014-03-31
申请人： Danfoss Power Solutions ApS
发明人： Frede Callesen , Dirk Wroblewski
IPC分类号： F16K11/00 , F15B11/024 , F15B15/14 , F16K3/02 , G05D7/06 , G05D16/20
CPC分类号： F15B11/024 , F15B15/149 , F15B2011/0246 , F15B2211/30565 , F15B2211/351 , F15B2211/353 , F15B2211/6306 , F15B2211/6309 , F15B2211/6313 , F15B2211/665 , F15B2211/6654 , F15B2211/7053 , F15B2211/761 , F16K3/0254 , G05D7/0652 , G05D16/204
摘要： A hydraulic valve arrangement (1) is provided comprising comprising a supply port arrangement having a high pressure port (2) and a low pressure port (4), a working port arrangement having two working ports (6, 7), a first valve (13) arranged between said high pressure port (2) and said working port arrangement (6, 7), a second valve (14) arranged between said low pressure port (4) and said working port arrangement (6, 7), a controller (19) for controlling said first valve (13) and said second valve (14), said controller (19) having an input connection (20) for receiving a signal of an operator input device, and a regenerative flow path which can be established by means of at least one of said first valve (13) and said second valve (14). The function of such a hydraulic valve arrangement should be enhanced. To this end said controller (19) said controller interrupts said regenerative flow path when a feed pressure at said working port arrangement (6, 7) exceeds a predetermined pressure level.

133. 发明授权

US09702118B2 Hydraulic regenerative and recovery parasitic mitigation system 有权
公开(公告)号：US09702118B2
公开(公告)日：2017-07-11
申请号：US14547672
申请日：2014-11-19
申请人： Caterpillar Inc.
发明人： Corey Lee Gorman , John J. Krone , Adam Martin Nackers
IPC分类号： F15B11/024 , E02F9/22 , F15B21/14 , E02F3/32 , E02F9/08 , F15B1/02
CPC分类号： E02F9/2225 , E02F3/32 , E02F9/0866 , E02F9/2217 , E02F9/2246 , E02F9/2285 , E02F9/2296 , F15B1/024 , F15B21/14 , F15B2211/212 , F15B2211/329 , F15B2211/353 , F15B2211/355 , F15B2211/6355 , F15B2211/67 , F15B2211/7058 , F15B2211/7135 , F15B2211/761
摘要： A hydraulic system is disclosed for use with a machine. The hydraulic system may have a pump configured to pressurize fluid, a first actuator configured to receive pressurized fluid from the pump, and an accumulator configured to receive fluid from the first actuator. The hydraulic system may also have a second actuator configured to receive pressurized fluid from the pump and the accumulator, and a pilot circuit configured to receive pressurized fluid from the pump and the accumulator. The hydraulic system may further have at least one valve movable to provide priority of fluid flow from the accumulator to the pilot circuit over the second actuator when a pressure of the accumulator is less than a low-pressure threshold.

134. 发明授权

US09476432B2 Hydraulic valve assembly with tank return flow compensation 有权
标题翻译：液压阀组件带油箱回流补偿
公开(公告)号：US09476432B2
公开(公告)日：2016-10-25
申请号：US14046328
申请日：2013-10-04
申请人： HUSCO International, Inc.
发明人： Jason Greenwood , Matthew J. Rades , Susan Kelpin
IPC分类号： F15B13/043 , F15B13/01 , F15B13/02
CPC分类号： F15B13/0433 , F15B13/015 , F15B13/021 , F15B2211/353 , Y10T137/0318 , Y10T137/86879
摘要： An apparatus has a pilot-operated spool valve connecting first and second work passages selectively to a supply conduit and a tank conduit. A first check valve normally allows fluid flow only in one direction from the first work passage to a first workport and when pilot-operated allows bidirectional fluid flow. A second check valve normally allows fluid flow only from the second work passage to a second workport and when pilot-operated allows bidirectional fluid flow. A first pilot valve selectively applies pressure to one end of the spool and to pilot operate the first check valve. A second pilot valve selectively applies pressure to another end of the spool and to pilot operate the second check valve. When fluid drains from a workport to the tank conduit, the associated check valve operates to maintain a predefined pressure in the first or second work passage through which that fluid flows.
摘要翻译：一种装置具有先导操作的滑阀，其将第一和第二工作通道选择性地连接到供应管道和罐管道。第一止回阀通常允许仅在从第一工作通道到第一工作端口的一个方向上流体流动，并且当先导操作允许双向流体流动时。第二止回阀通常仅允许流体从第二工作通道流到第二工作端口，并且当先导操作允许双向流体流动时。第一先导阀选择性地向阀芯的一端施加压力，并且先导操作第一止回阀。第二先导阀选择性地向阀芯的另一端施加压力，并且先导操作第二止回阀。当流体从工作口排出到罐管道时，相关联的止回阀操作以在第一或第二工作通道中保持预定的压力，通过该流体流动。

135. 发明申请

US20150096291A1 FLUID PRESSURE CONTROL DEVICE 有权
标题翻译：流体压力控制装置
公开(公告)号：US20150096291A1
公开(公告)日：2015-04-09
申请号：US14384399
申请日：2013-03-25
申请人： KAYABA INDUSTRY CO., LTD.
发明人： Tooru Takeuchi
IPC分类号： E02F9/22 , F15B13/042 , F15B13/04 , F15B11/00 , F15B13/02
CPC分类号： E02F9/2285 , E02F9/2203 , E02F9/2221 , E02F9/2225 , E02F9/2267 , F15B11/003 , F15B11/044 , F15B13/01 , F15B13/021 , F15B13/0402 , F15B13/042 , F15B13/0422 , F15B2211/20576 , F15B2211/30515 , F15B2211/30565 , F15B2211/3157 , F15B2211/329 , F15B2211/353 , F15B2211/355 , F15B2211/365 , F15B2211/40515 , F15B2211/41527 , F15B2211/428 , F15B2211/46 , F15B2211/50545 , F15B2211/5151 , F15B2211/575 , F15B2211/7053 , F15B2211/715 , F15B2211/761 , F16K11/0716 , F16K31/1221
摘要： A fluid pressure control device includes a switching valve that operates in conjunction with a control valve by a pilot pressure to switch an operation of an operated check valve. The switching valve includes a spool that moves according to the pilot pressure of a pilot chamber, and a piston that is accommodated in the pilot chamber and imparts a thrust force to the spool upon receiving the pilot pressure. The piston includes a first piston that is slidingly accommodated in the pilot chamber and is acted upon by the pilot pressure, and a second piston whose distal end faces the spool and is inserted into an accommodating hole formed in the first piston. A spherical protrusion is provided on a center of either one of a bottom surface of the accommodating hole of the first piston and a back surface of the second piston.
摘要翻译：流体压力控制装置包括切换阀，其通过先导压力与控制阀一起操作以切换操作的止回阀的操作。切换阀包括根据先导室的先导压力移动的阀芯和容纳在先导室中的活塞，并且在接收到先导压力时向阀芯施加推力。活塞包括滑动地容纳在先导室中并被先导压力作用的第一活塞，以及第二活塞，其顶端面向阀芯并插入形成在第一活塞中的容纳孔中。在第一活塞的容纳孔的底表面和第二活塞的后表面的中心上设置有球形突起。

136. 发明申请

US20130300128A1 MOTIVE POWER REGENERATION SYSTEM FOR WORKING MACHINE 有权
标题翻译：用于工作机械的动力再生系统
公开(公告)号：US20130300128A1
公开(公告)日：2013-11-14
申请号：US13696671
申请日：2012-01-20
申请人： Kazuo Fujishima , Mitsuo Sonoda , Seiji Hijikata
发明人： Kazuo Fujishima , Mitsuo Sonoda , Seiji Hijikata
IPC分类号： H02K7/18
CPC分类号： H02K7/1853 , E02F9/2075 , E02F9/2091 , E02F9/2217 , E02F9/2285 , F15B21/14 , F15B2211/353 , F15B2211/6654 , F15B2211/761
摘要： A motive power regeneration apparatus for a working machine includes a regeneration circuit that is connected to a hydraulic line through which a returning fluid of a boom cylinder is distributed during a boom lowering operation. Also included are a hydraulic motor connected to a generator, a flow regulating circuit that is connected to the hydraulic line and provided with a control valve, an inverter that controls the flow rate on the regeneration circuit in accordance with a first flow rate setting which varies with the operation amount of an operating apparatus, and a control valve and a proportional valve that control the flow rate on the flow regulating circuit in accordance with a second flow rate setting which varies with the operation amount of the operating apparatus. Therefore, the motive power regeneration apparatus is capable of making an operator constantly feel comfortable with the working machine operations.
摘要翻译：用于工作机械的动力再生装置包括再生回路，该再生回路连接到在动臂下降动作期间分配有动臂缸的返回流体的液压管路。还包括连接到发电机的液压马达，连接到液压管路并设置有控制阀的流量调节电路，根据变化的第一流量设定来控制再生电路上的流量的逆变器以及操作装置的操作量，以及根据随着操作装置的操作量而变化的第二流量设定来控制流量调节电路上的流量的控制阀和比例阀。因此，动力再生装置能够使操作者对工作机械的操作感到舒适。

137. 发明申请

US20100083651A1 Circuit for controlling a double-action hydraulic drive cylinder 失效
公开(公告)号：US20100083651A1
公开(公告)日：2010-04-08
申请号：US11988908
申请日：2006-01-27
申请人： Ivan Hristov , Josef Zürcher
发明人： Ivan Hristov , Josef Zürcher
IPC分类号： F16D31/02
CPC分类号： F15B11/003 , B66F9/22 , E02F9/2203 , F15B11/024 , F15B13/021 , F15B2211/30505 , F15B2211/3051 , F15B2211/30515 , F15B2211/30525 , F15B2211/3058 , F15B2211/3127 , F15B2211/3144 , F15B2211/31576 , F15B2211/31588 , F15B2211/329 , F15B2211/351 , F15B2211/353 , F15B2211/50518 , F15B2211/55 , F15B2211/88
摘要： Circuit for controlling a double-action hydraulic drive cylinder includes a directional control valve having working ports A and B, a pump port P, and a tank port T, wherein the directional control valve has a neutral position in which pump port P is blocked and working ports A, B are connected to tank port T. A pressure-limiting valve and a controllable load-holding valve are connected to the piston space in parallel, and a regeneration check valve is connected in series between a connection point for the parallel components and the rod space. A first precharge valve is connected between the working port A and the connection point, and a first bypass check valve is connected anti-parallel parallel with the first precharge valve and the load-holding valve. A second precharge valve is connected in series with the directional control valve between the tank port P and the rod space.

138. 发明授权

US07451685B2 Hydraulic control system with cross function regeneration 失效
标题翻译：具有交叉功能再生的液压控制系统
公开(公告)号：US07451685B2
公开(公告)日：2008-11-18
申请号：US11079059
申请日：2005-03-14
申请人： Keith A. Tabor
发明人： Keith A. Tabor
IPC分类号： F15B13/16
CPC分类号： F15B21/14 , F15B11/006 , F15B11/163 , F15B21/082 , F15B2211/30575 , F15B2211/327 , F15B2211/351 , F15B2211/353 , F15B2211/63 , F15B2211/6309 , F15B2211/6313 , F15B2211/6654 , F15B2211/6658 , F15B2211/7053 , F15B2211/71 , F15B2211/75 , F15B2211/78 , F15B2211/88
摘要： A system operates a hydraulic actuator, such as a cylinder, in one of several modes that include powered extension and retraction, self-powering regeneration modes in which fluid exhausting from one cylinder chamber is routed into the other cylinder chamber, and cross function regeneration modes wherein the fluid exhausted from one actuator is routed in the supply conduit to power a different actuator. A controller determines which modes are viable based on existing system conditions and selects from among the viable available modes. That determination is a function of the desired velocity for the actuator, the hydraulic load on the actuator, and pressures in the supply and return hydraulic conduits. The system also can recover potential or kinetic energy through pressure intensification which recovered energy can be used to power another simultaneously active hydraulic function or to drive the prime mover via an over-center variable pump/motor.
摘要翻译：系统将液压致动器（例如气缸）操作在包括动力伸展和回缩的多种模式中的一种模式中，其中一个气缸室中排出的液体排出到另一气缸室中的自动再生模式以及交叉功能再生模式其中从一个致动器排出的流体在供应导管中被路由以为不同的致动器供电。控制器根据现有系统条件确定哪些模式可行，并从可行的可用模式中进行选择。该确定是致动器的期望速度，致动器上的液压负载以及供应和返回液压管道中的压力的函数。该系统还可以通过压力增强来恢复潜能或动能，回收的能量可用于为另一个同时有效的液压功能供电，或通过一个过中心的可变泵/电机来驱动原动机。

139. 发明申请

US20080053304A1 Hydraulic control apparatus 有权
标题翻译：液压控制装置
公开(公告)号：US20080053304A1
公开(公告)日：2008-03-06
申请号：US11894508
申请日：2007-08-20
申请人： Tetsuya Goto , Takeharu Matsuzaki , Shigeto Nakajima , Tadashi Noguchi
发明人： Tetsuya Goto , Takeharu Matsuzaki , Shigeto Nakajima , Tadashi Noguchi
IPC分类号： F15B11/08
CPC分类号： F15B11/044 , F15B13/01 , F15B2211/327 , F15B2211/351 , F15B2211/353 , F15B2211/7052 , F15B2211/75 , Y10T137/8671
摘要： A hydraulic control apparatus for a single action cylinder includes a switch valve for supplying fluid to and draining fluid from the cylinder, a cylinder side passage connected to the cylinder, a switch valve side passage connected to the switch valve, and a valve body accommodation chamber. The valve body accommodation chamber linearly extends between the cylinder side passage and the switch valve side passage. An on-off valve is located in a vicinity of a first end of the valve body accommodation chamber. The on-off valve defines a first back pressure chamber. A flow control valve is located in a vicinity of a second end that is opposite to the first end. The flow control valve defines a second back pressure chamber. The on-off valve and the flow control valve are separated from each other by a partitioning member.
摘要翻译：用于单动作气缸的液压控制装置包括用于向缸体供给流体和排出流体的开关阀，连接到气缸的气缸侧通道，连接到开关阀的开关阀侧通道和阀体容置室。阀体容纳室在气缸侧通路与开关阀侧通路之间直线延伸。开关阀位于阀体容纳室的第一端附近。开关阀限定第一背压室。流量控制阀位于与第一端相对的第二端附近。流量控制阀限定第二背压室。开关阀和流量控制阀通过分隔构件彼此分离。

140. 发明授权

US07228781B2 Hydraulic control in a hydraulic system, especially for the operation of scrap cutters 失效
标题翻译：液压系统中的液压控制，特别适用于废料切割机的操作
公开(公告)号：US07228781B2
公开(公告)日：2007-06-12
申请号：US10515255
申请日：2003-03-27
申请人： Andreas Klother , Karl-Heinz Post
发明人： Andreas Klother , Karl-Heinz Post
IPC分类号： F15B11/08
CPC分类号： F15B11/028 , B23D15/14 , B30B9/326 , B30B15/16 , F15B11/006 , F15B11/024 , F15B11/044 , F15B13/0407 , F15B21/10 , F15B21/14 , F15B2211/30575 , F15B2211/3111 , F15B2211/327 , F15B2211/353 , F15B2211/6054
摘要： The invention relates to hydraulic control in a hydraulic system for the operation of a machine tool such as a press for processing material of a certain type, especially for the operation of the scrap cutters. Said control allows for impact attenuation and combined rapid motion switching with load compensation and transfer of a hydraulic medium of a hydraulic cylinder for the movement of the other. According to the invention, said control comprises hydraulic media of a hydraulic cylinder for pre-control of a first main valve element (2.4.0), a second main valve element (2.7.0) and a third main valve element (3.7.0) which are functionally combined and a fourth valve (2.5).
摘要翻译：本发明涉及一种液压系统中的液压控制，用于诸如用于加工特定类型的材料的压机的机床的操作，特别是用于废料切割机的操作。所述控制允许冲击衰减和组合的快速运动切换与液压缸的液压介质的负载补偿和传递以用于另一个的运动。根据本发明，所述控制装置包括用于预控第一主阀元件（2.4.0），第二主阀元件（2.7.0）和第三主阀元件（3.7.0）的液压缸的液压介质）和第四阀（2.5）。

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