公开(公告)号：US11759937B1

公开(公告)日：2023-09-19

申请号：US18055244

申请日：2022-11-14

Applicant: KUDOS MECHANICAL CO., LTD.

Inventor： James Chuan

IPC: B25F5/00 ,  F15B11/15 ,  F15B15/14 ,  F15B13/02 ,  H01R43/042 ,  B25B5/06 ,  B25B5/08 ,  B25B27/10

CPC classification number: B25F5/005 ,  F15B11/15 ,  F15B13/021 ,  F15B15/149 ,  F15B15/1476 ,  H01R43/0427 ,  B25B5/061 ,  B25B5/064 ,  B25B5/087 ,  B25B27/10 ,  F15B2211/428 ,  F15B2211/50518

Abstract: An automatic oil return structure is provided. The automatic oil return structure has an oil storage bag, a piston, and a main body assembly. The piston has an oil storage chamber. The main body assembly has a main channel, a piston oil channel, a pressure regulating channel, a control channel, an operation channel, a minor channel, and an oil return channel. When the pressure of the main channel achieves a limit pressure, the pressure pushes the control blocking assembly away such that the pressure regulating channel communicates with the communication channel, and the pressure also pushes the operating assembly away such that the minor channel communicates with the return channel. At the same time, the pressure of the oil storage chamber pushes the oil blocking assembly, so as to isolate the oil storage chamber from the main channel, and the oil storage chamber communicates with the oil return channel.

公开(公告)号：US20190219177A1

公开(公告)日：2019-07-18

申请号：US16336969

申请日：2017-08-31

Applicant: HYDAC SYSTEMS & SERVICES GMBH

Inventor： Sascha Alexander BIWERSI

IPC: F16K11/07 ,  F15B13/04 ,  F15B11/10

CPC classification number: F16K11/07 ,  F15B11/10 ,  F15B13/0402 ,  F15B13/0407 ,  F15B13/0417 ,  F15B2211/253 ,  F15B2211/30535 ,  F15B2211/329 ,  F15B2211/428 ,  F15B2211/7058 ,  F15B2211/8613

Abstract: 1. Valve and valve device comprising a valve of that type. 2. The invention relates to a valve comprising a valve housing (33), which has at least one service connection (A, B), a pressure supply connection (P) and a return connection (T) and in which valve housing (33) a control slide (STS) is guided so as to be movable longitudinally in order to control these individual connections. The valve is characterised in that the supply pressure, which is applied to the pressure connection (P) in order to control a consumer (10, 12) connected to the service connection (A; B), is guided across at least one control side (56) of the control slide (STS) via an orifice plate (54) and a control channel (50), the control side (56) being positioned in a control chamber (58) in the valve housing (33) such that it can move and the control chamber (58) being connected to the return connection (T) via an additional orifice plate (59).

公开(公告)号：US20180106277A1

公开(公告)日：2018-04-19

申请号：US15566259

申请日：2016-03-14

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: F15B11/028 ,  F16K11/07 ,  E02F9/22

CPC classification number: F15B11/028 ,  E02F9/2203 ,  E02F9/2225 ,  E02F9/2267 ,  E02F9/2282 ,  E02F9/2285 ,  F15B11/003 ,  F15B13/0402 ,  F15B13/0422 ,  F15B21/005 ,  F15B2211/30515 ,  F15B2211/3116 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/41554 ,  F15B2211/428 ,  F15B2211/45 ,  F16K11/07 ,  F16K31/363

Abstract: A valve device includes a valve body, a drain chamber wall configured to define a drain chamber, a drain port formed in the drain chamber wall facing the valving element, and a drain passage configured to guide drain fluid from another valve device to the drain chamber, wherein at least one of the drain chamber wall and the valving element includes a communicating passage configured to allow the drain port to communicate with the drain chamber when the movement of the valving element is restricted by the drain chamber wall.

公开(公告)号：US20170350096A1

公开(公告)日：2017-12-07

申请号：US15536752

申请日：2015-01-09

Applicant: Sung-yong JO ,  VOLVO CONSTRUCTION EQUIPMENT AB

Inventor： Sung-Yong JO ,  Hyung-Seok PARK ,  Jae-Hoon LEE

IPC: E02F9/22

CPC classification number: E02F9/2232 ,  E02F9/20 ,  E02F9/22 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2292 ,  F15B2211/30555 ,  F15B2211/30565 ,  F15B2211/428 ,  F15B2211/6316

Abstract: A hydraulic pump control apparatus for construction equipment includes a first hydraulic pump; a first hydraulic actuator driven by the hydraulic oil of the first hydraulic pump; a first control valve installed on the fluid channel of the first hydraulic pump; a second hydraulic pump connected, to a power take-off apparatus of an engine; a second hydraulic actuator driven by the hydraulic oil of the second hydraulic pump; a second control valve installed on the fluid channel of the second hydraulic pump; a pressure sensor that detects the pressure of the second hydraulic pump; a regulator that controls the amount of oil discharged from the first hydraulic pump; and a controller that computes a horse power value using the detected pressure value of the second hydraulic pump and the amount of oil discharged from the second hydraulic pump and inputs a control signal to the regulator to discharge an amount of oil that corresponds to the difference between the maximum working horse power value of the engine and the computed horse power value of the second hydraulic pump.

公开(公告)号：US09828746B2

公开(公告)日：2017-11-28

申请号：US14423868

申请日：2013-10-08

Applicant: Hitachi Construction Machinery Tierra Co., Ltd.

Inventor： Yoshifumi Takebayashi ,  Kiwamu Takahashi ,  Kazushige Mori ,  Natsuki Nakamura

IPC: E02F9/22 ,  F04B49/08 ,  F04B49/22 ,  F15B11/16 ,  E02F3/96 ,  E02F9/02 ,  E02F3/32

CPC classification number: E02F9/2232 ,  E02F3/325 ,  E02F3/964 ,  E02F9/02 ,  E02F9/2203 ,  E02F9/2225 ,  E02F9/2267 ,  E02F9/2285 ,  E02F9/2296 ,  F04B49/08 ,  F04B49/22 ,  F15B11/161 ,  F15B11/163 ,  F15B2211/20546 ,  F15B2211/30535 ,  F15B2211/329 ,  F15B2211/41509 ,  F15B2211/428 ,  F15B2211/7142

Abstract: Control valves 100f, 100g, and 100h that reduce flow passage areas of parallel hydraulic fluid lines 41f, 41g, and 41h respectively when operating devices 34a, 34b for traveling are operated, are each disposed in the parallel hydraulic fluid line 41f, 41g, or 41h so that if saturation occurs during combined operations control likely to generate a significant difference in load pressure between any two actuators, the control valve prevents full closing of a pressure compensating valve lower in load pressure and thus prevents a slowdown and stop of the actuator undergoing the lower load pressure, and so that if saturation occurs during combined operations control likely to generate a particularly significant difference in load pressure between any two actuators, the control valve ensures a necessary supply of hydraulic fluid to the actuator higher in load pressure, thereby preventing a slowdown and stop of the actuator higher in load pressure.

公开(公告)号：US09605411B2

公开(公告)日：2017-03-28

申请号：US14498310

申请日：2014-09-26

Applicant: Caterpillar Inc.

Inventor： Gang Wen ,  Moses I. Akpan ,  Steven E. Johnson

IPC: E02F9/22 ,  F15B11/16 ,  F15B13/00

CPC classification number: E02F9/2225 ,  B60T13/686 ,  B60T15/36 ,  E02F9/2203 ,  E02F9/2217 ,  E02F9/2228 ,  E02F9/226 ,  E02F9/2278 ,  F15B11/162 ,  F15B13/00 ,  F15B2211/212 ,  F15B2211/30505 ,  F15B2211/4053 ,  F15B2211/428 ,  F15B2211/7142 ,  F15B2211/781 ,  Y10T137/2574 ,  Y10T137/2605 ,  Y10T137/2663

Abstract: A hydraulic circuit includes: a priority valve including a first position and a second position where: the first position includes a first fluid passage and a fixed bypass orifice connected to the first fluid passage; the second position includes a second fluid passage and a variable bypass orifice connected to the second fluid passage. The hydraulic circuit further includes: a first fluid line fluidly connecting the priority valve and a first machine component; a second fluid line fluidly connecting the priority valve and a second machine component; a check valve placed between the priority valve and the second machine component and fluidly connecting the priority valve and the second machine component; an oil passage on the priority valve fluidly connected to one or more machine components other than the first and second machine components; one or more actuators connected to the priority valve; and a control valve communicatively connected to the one or more actuators connected to the priority valve.

公开(公告)号：US09546673B2

公开(公告)日：2017-01-17

申请号：US14364035

申请日：2012-11-30

Applicant: KABUSHIKI KAISHA KCM ,  KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Shinichiro Tanaka ,  Hiroyasu Kodera ,  Makoto Ito

IPC: F16D31/02 ,  F15B21/00 ,  E02F9/22 ,  F15B11/16 ,  F15B1/26 ,  F16H61/4017 ,  B62D5/06 ,  F01N3/023

CPC classification number: F15B21/001 ,  B62D5/063 ,  E02F9/2228 ,  E02F9/2246 ,  E02F9/225 ,  E02F9/2285 ,  F01N3/023 ,  F01N2590/08 ,  F15B1/26 ,  F15B11/162 ,  F15B2211/20523 ,  F15B2211/252 ,  F15B2211/4053 ,  F15B2211/428 ,  F15B2211/6355 ,  F15B2211/6658 ,  F15B2211/67 ,  F15B2211/7135 ,  F15B2211/781 ,  F15B2211/85 ,  F16H61/4017

Abstract: A hydraulic drive system includes a pump, a steering actuator, a loading/unloading apparatus actuator, a drive device, a relief valve, and an input unit. The drive device: flows hydraulic oil from the pump to the loading/unloading apparatus actuator when an operating tool is operated; flows the hydraulic oil from the pump to the steering actuator when a steering has become an operated state from a non-operated state regardless of an operation of the operating tool; and causes the hydraulic oil from the pump to be discharged to a tank via the relief valve to increase the torque of an engine when an increase instruction is inputted to the input unit and the steering is in a non-operated state.

Abstract translation: 液压驱动系统包括泵，转向致动器，装载/卸载装置致动器，驱动装置，安全阀和输入单元。 驱动装置：当操作工具操作时，液压油从泵流向装载/卸载装置致动器; 无论操作工具的操作如何，当转向已经从非操作状态变为操作状态时，液压油从泵流到转向致动器; 并且当增加指令输入到输入单元并且转向处于非操作状态时，使得来自泵的液压油经由安全阀被排出到油箱，以增加发动机的扭矩。

公开(公告)号：US20170009430A1

公开(公告)日：2017-01-12

申请号：US15113486

申请日：2015-01-27

Applicant: KYB Corporation

Inventor： Nobuyoshi YOSHIDA ,  Ikuo INAGAKI

IPC: E02F9/22 ,  F15B13/06 ,  F15B13/02 ,  F15B11/16

CPC classification number: E02F9/2225 ,  E02F3/32 ,  E02F9/2232 ,  E02F9/2235 ,  E02F9/2239 ,  E02F9/2267 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/00 ,  F15B11/16 ,  F15B11/17 ,  F15B13/022 ,  F15B13/06 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/30595 ,  F15B2211/327 ,  F15B2211/329 ,  F15B2211/36 ,  F15B2211/41554 ,  F15B2211/426 ,  F15B2211/428 ,  F15B2211/45 ,  F15B2211/6652 ,  F15B2211/71 ,  F15B2211/7142

Abstract: A working machine control system includes: a split-flow fluid pressure pump configured to discharge a working fluid from a first discharge port and a second discharge port; a communication switching valve configured to be switched by a switch signal when any one of a first operation valve and a second operation valve is switched so as to allow a first neutral passage and a second neutral passage to communicate with each other; a neutral cut valve configured to be switched by the switch signal so as to block communication between a tank and one of the first neutral passage and the second neutral passage for the first operation valve or the second operation valve that is not switched; and a discharge flow rate adjusting device configured to adjust the fluid pressure pump so as to reduce a discharge flow rate thereof when the switch signal is inputted from any one of the first operation valve and the second operation valve.

Abstract translation: 一种工作机械控制系统，包括：分流流体压力泵，其构造成从第一排出口和第二排出口排出工作流体; 通信切换阀，被配置为当第一操作阀和第二操作阀中的任何一个被切换以便允许第一中性通路和第二中性通路彼此连通时由开关信号切换; 构造成通过开关信号切换的中性切断阀，以阻止油箱与未切换的第一操作阀或第二操作阀的第一中性通道和第二空档通道中的一个之间的连通; 以及排出流量调节装置，其构造成当从所述第一操作阀和所述第二操作阀中的任一个输入所述切换信号时，调整所述流体压力泵以便减小其排出流量。

公开(公告)号：US09447874B2

公开(公告)日：2016-09-20

申请号：US12485338

申请日：2009-06-16

Applicant: Simon Meier ,  Thomas Reisch

Inventor： Simon Meier ,  Thomas Reisch

IPC: F15B11/05 ,  F16H61/4026 ,  E02F9/12 ,  E02F9/22 ,  F16H61/4017 ,  F16H61/4035 ,  F16H59/68

CPC classification number: F16H61/4026 ,  E02F9/123 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2296 ,  F15B11/05 ,  F15B2211/20546 ,  F15B2211/253 ,  F15B2211/40561 ,  F15B2211/4159 ,  F15B2211/428 ,  F15B2211/6054 ,  F15B2211/7058 ,  F16H61/4017 ,  F16H61/4035 ,  F16H2059/6861 ,  Y10T137/86493

Abstract: The present invention relates to a hydraulic drive which comprises a hydraulic motor having a first hydraulic connector and a second hydraulic connector, wherein the pressure applied at the first hydraulic connector of the hydraulic motor and the pressure applied at the second hydraulic connector of the hydraulic motor are each separately adjustable.

Abstract translation: 本发明涉及一种液压驱动装置，它包括具有第一液压连接器和第二液压连接器的液压马达，其中施加在液压马达的第一液压连接器处的压力和在液压马达的第二液压连接器处施加的压力 分别可调。

公开(公告)号：US20160090997A1

公开(公告)日：2016-03-31

申请号：US14495960

申请日：2014-09-25

Applicant: CNH Industrial America, LLC

Inventor： Thomas Johnson

IPC: F15B11/028

CPC classification number: F15B11/028 ,  E02F9/226 ,  E02F9/2267 ,  F15B11/165 ,  F15B2211/212 ,  F15B2211/265 ,  F15B2211/3111 ,  F15B2211/3127 ,  F15B2211/41572 ,  F15B2211/41581 ,  F15B2211/428 ,  F15B2211/50563 ,  F15B2211/511 ,  F15B2211/5159 ,  F15B2211/528 ,  F15B2211/57 ,  F15B2211/605 ,  F15B2211/6051 ,  F15B2211/625 ,  F15B2211/761 ,  F15B2211/8609

Abstract: A hydraulic system is provided, the hydraulic system including a hydraulic load defining a first chamber and a second chamber. Additionally, the hydraulic system includes a pressure source, a fluid storage vessel, a load sense line, and a spool valve. The spool valve fluidly connects the fluid storage vessel to one of the first or second chambers and fluidly connects the pressure source to the other of the first or second chambers. A bypass line is also provided defining a flow path between the hydraulic load and the fluid storage vessel that bypasses the spool valve. Fluid flow may encounter less resistance through the bypass line, such that the hydraulic system may run more efficiently and with a reduced risk for cavitation in the hydraulic load.

Abstract translation: 提供了液压系统，液压系统包括限定第一室和第二室的液压负载。 此外，液压系统包括压力源，流体存储容器，负载感测线和滑阀。 滑阀将流体存储容器流体地连接到第一或第二腔室中的一个，并将压力源流体地连接到第一或第二腔室中的另一个。 还提供了旁路管线，其限定了绕过滑阀的液压负载和流体存储容器之间的流动路径。 流体流动可能通过旁路管线遇到较小的阻力，使得液压系统可以更有效地运行并且降低液压负载中的空化风险。