公开(公告)号：US20240360848A1

公开(公告)日：2024-10-31

申请号：US18498518

申请日：2023-10-31

Applicant: Deere & Company

Inventor： Michael A. Holland

IPC: F15B11/028 ,  B60D1/62

CPC classification number: F15B11/028 ,  B60D1/62 ,  F15B2211/3056 ,  F15B2211/50509

Abstract: One or more techniques and/or systems are disclosed for a hydraulic system that is used with a vehicle hitch, to raise and lower an implement attached to the hitch. The system has a lifting side, that raises the hitch, and a downforce side that applies downward pressure. Hydraulic actuators are used to apply the up or down force using supply lines coupled to both sides. A downforce pressure control valve controls an amount of hydraulic pressure is supplied to the downforce side. A mode select valve is fluidly coupled to the downforce pressure control valve and is used to select hitch operation between a double acting hitch position, a single acting hitch position, and a neutral position. A work port check valve is between the downforce side and the mode select valve to stop the fluid from flowing back into the system when de-energized or in the neutral position.

公开(公告)号：US11927205B2

公开(公告)日：2024-03-12

申请号：US17796438

申请日：2021-02-19

Applicant: Komatsu Ltd.

Inventor： Yuichi Hishinuma ,  Shinobu Nagura

IPC: F15B11/024 ,  E02F9/22 ,  F15B11/17

CPC classification number: F15B11/024 ,  E02F9/2239 ,  E02F9/2242 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17 ,  E02F9/2217 ,  E02F9/2282 ,  F15B2201/51 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/3056 ,  F15B2211/3133 ,  F15B2211/355 ,  F15B2211/6313 ,  F15B2211/6355

Abstract: A hydraulic system includes: an arm hydraulic cylinder; a first hydraulic pump and a second hydraulic pump; an arm first direction switching valve; an arm second direction switching valve; and a controller that controls an operation of the arm second direction switching valve when the arm hydraulic cylinder is extended and operated. Further, the arm first direction switching valve incorporates an arm regeneration passage capable of supplying oil when the arm hydraulic cylinder is extended and operated, and the controller monitors a pressure state of the arm hydraulic cylinder, and when determining that oil flow through the arm regeneration passage is possible, the controller blocks oil flow between the arm hydraulic cylinder and the arm second direction switching valve, and otherwise, the controller operates the arm second direction switching valve so that oil can be supplied from the second hydraulic pump to the bottom chamber.

公开(公告)号：US20170051768A1

公开(公告)日：2017-02-23

申请号：US15307271

申请日：2015-03-06

Applicant: FESTO AG & Co. KG

Inventor： Josef Sauer ,  Alexander Vargas ,  Manfred Jainczyk ,  Eckard Roos ,  Peter Beil

IPC: F15B20/00 ,  F17C13/04 ,  F15B19/00

CPC classification number: F15B20/008 ,  F15B19/00 ,  F15B2211/3052 ,  F15B2211/3056 ,  F15B2211/30565 ,  F15B2211/6313 ,  F15B2211/634 ,  F15B2211/855 ,  F15B2211/8855 ,  F17C13/04 ,  F17C2250/0626

Abstract: A compressed-air system having a safety function and a method for operating such a compressed-air system. The compressed-air system contains two working valves, which each can selectively assume an aerating position that aerates a load and a venting position that vents the load. Both working valves are redundantly connected on the output side to the load by means of a separating device. The separating device allows one or the other of the working valves to be separated, while the aeration of the load is maintained, in order to subject the one or the other working valve to an examination of the switching function of the one or the other working valve.

Abstract translation: 具有安全功能的压缩空气系统和用于操作这种压缩空气系统的方法。 压缩空气系统包含两个工作阀，每个工作阀可以选择性地承担通风负载的通风位置和排出负载的排气位置。 两个工作阀通过分离装置在输出侧冗余连接到负载。 分离装置允许一个或另一个工作阀被分离，同时保持负载通气，以便使一个或另一个工作阀检查一个或另一个工作的切换功能 阀。

公开(公告)号：US09151301B2

公开(公告)日：2015-10-06

申请号：US13493184

申请日：2012-06-11

Applicant: Michael I. Combley ,  Dante V. DeLeo

Inventor： Michael I. Combley ,  Dante V. DeLeo

IPC: A61G3/06 ,  F15B13/02 ,  F15B20/00

CPC classification number: F15B13/025 ,  A61G3/061 ,  A61G3/062 ,  F15B20/00 ,  F15B2211/30505 ,  F15B2211/3056 ,  F15B2211/3138 ,  F15B2211/40507 ,  F15B2211/40584 ,  F15B2211/411 ,  F15B2211/41581 ,  F15B2211/50554 ,  F15B2211/5158 ,  F15B2211/761 ,  F15B2211/8603 ,  F15B2211/8643

Abstract: A hydraulic system for an access arrangement having a platform configured for movement between a deployed position and a stowed position, the hydraulic system including: at least one hydraulic power unit configured to urge hydraulic fluid through a hydraulic circuit; at least one hydraulic cylinder directly or indirectly connected to a portion of the platform and configured to urge the platform towards at least one of the stowed position and the deployed position, wherein the at least one hydraulic cylinder is in fluid communication with the hydraulic power unit; and a pressure regulating valve in a path between the at least one hydraulic power unit and the at least one hydraulic cylinder, wherein the pressure regulating valve is operable to prevent the at least one hydraulic cylinder from urging the platform to the stowed position if a load on the platform exceeds a specified threshold.

Abstract translation: 一种用于进入装置的液压系统，具有构造成在展开位置和收起位置之间运动的平台，所述液压系统包括：至少一个液压动力单元，构造成通过液压回路来迫使液压流体; 至少一个液压缸直接或间接连接到所述平台的一部分并且构造成将所述平台推向所述收起位置和展开位置中的至少一个，其中所述至少一个液压缸与所述液压动力单元流体连通 ; 以及在所述至少一个液压动力单元和所述至少一个液压缸之间的路径中的压力调节阀，其中所述压力调节阀可操作以防止所述至少一个液压缸将所述平台推动到所述收起位置， 在平台上超过指定的阈值。

公开(公告)号：US20150068200A1

公开(公告)日：2015-03-12

申请号：US14540226

申请日：2014-11-13

Applicant: SUMITOMO (S.H.I) CONSTRUCTION MACHINERY CO., LTD.

Inventor： Hirofumi HASHIMOTO

IPC: E02F9/22 ,  F15B11/00

CPC classification number: E02F9/2282 ,  E02F9/2228 ,  E02F9/2242 ,  E02F9/2267 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/00 ,  F15B11/16 ,  F15B13/0402 ,  F15B2211/255 ,  F15B2211/3052 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/30595 ,  F15B2211/3157 ,  F15B2211/327 ,  F15B2211/40515 ,  F15B2211/41554 ,  F15B2211/45 ,  F15B2211/7142

Abstract: A hydraulic circuit for a construction machine including a center bypass passage including a group of directional control valves arranged in tandem; and a bleed-off valve arranged in the center bypass passage on a downstream side of the group, wherein each directional control valve includes a first internal passage causing the pressurized oil supplied to the directional control valve to flow out to the center bypass passage and a second internal passage supplying the pressurized oil to a cylinder port, wherein a parallel passage is formed by the center bypass passage and the first internal passage by causing the pressurized oil discharged from the hydraulic pump to flow to the center bypass passage on the downstream of the directional control valve, wherein the second internal passage supplies the pressurized oil from the center bypass passage through an opening of a spool and/or the bypass passage to the cylinder port.

Abstract translation: 一种用于建筑机械的液压回路，包括：一个中心旁通通道，包括一组串联布置的方向控制阀; 以及设置在所述组的下游侧的所述中央旁通通路的排泄阀，其中，各方向控制阀包括使供给到所述方向控制阀的加压油流出到所述中心旁通通路的第一内部通路， 第二内部通道将加压油供应到气缸端口，其中通过中心旁通通道和第一内部通道形成平行通道，使得从液压泵排出的加压油在下游流动到中心旁通通道 方向控制阀，其中第二内部通道将来自中心旁通通道的加压油通过阀芯和/或旁路通道的开口提供到气缸端口。

公开(公告)号：US07392734B2

公开(公告)日：2008-07-01

申请号：US10595712

申请日：2004-11-08

Applicant: Ichiro Kawabuchi ,  Kiyoshi Hoshino

Inventor： Ichiro Kawabuchi ,  Kiyoshi Hoshino

IPC: F15B11/06 ,  F15B11/00

CPC classification number: F15B11/0426 ,  F15B11/044 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/40515 ,  F15B2211/40584 ,  F15B2211/40592 ,  F15B2211/426 ,  F15B2211/45 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/473 ,  F15B2211/6336 ,  F15B2211/7052

Abstract: The present invention provides an actuator using a fluid cylinder capable of imparting stiffness to a fluid cylinder such as an air cylinder with a simple constitution, a control method thereof and a choke valve device. The actuator is provided with a fluid cylinder 1, a first choke valve device 3 and a second choke valve device 5. The fluid cylinder 1 has a cylinder chamber 7 and a piston 12 dispose slidably in the cylinder chamber 7 so as to partition the cylinder chamber 7 into a first chamber 9 and a second chamber 11. The first choke valve device 3 is disposed between a fluid pressure source and the first chamber 9; and the second choke valve device 5 is disposed between the fluid pressure source and the second chamber 11. Each of the choke valve devices 3 and 5 is provided with a discharge valve mechanism capable of changing the opening of the valve.

Abstract translation: 本发明提供一种致动器，其使用能够以简单结构赋予诸如气缸的流体缸的刚度的流体缸，其控制方法和阻流阀装置。 致动器设置有流体缸1，第一阻流阀装置3和第二阻塞阀装置5。 液压缸1具有气缸室7和可滑动地设置在气缸室7中的活塞12，以将气缸室7分隔成第一室9和第二室11。 第一阻气门装置3设置在流体压力源和第一室9之间; 并且第二阻塞阀装置5设置在流体压力源和第二室11之间。 每个阻流阀装置3和5设置有能够改变阀的开度的排出阀机构。

公开(公告)号：US20060070673A1

公开(公告)日：2006-04-06

申请号：US11235260

申请日：2005-09-26

Applicant: Andreas Decker ,  Karl Messerschmidt ,  Gunter Gebauer

Inventor： Andreas Decker ,  Karl Messerschmidt ,  Gunter Gebauer

IPC: F16K3/24

CPC classification number: F15B11/068 ,  F15B20/008 ,  F15B2211/30505 ,  F15B2211/30535 ,  F15B2211/3056 ,  F15B2211/329 ,  F15B2211/605 ,  F15B2211/634 ,  F15B2211/6355 ,  F15B2211/6654 ,  F15B2211/75 ,  Y10T137/86614 ,  Y10T137/86928 ,  Y10T137/87322 ,  Y10T137/87917

Abstract: A soft start device for compressed air systems comprises a primary inlet at which compressed air at a primary pressure may be supplied, the primary inlet being connected with a secondary outlet able to be coupled with a load, by a valve circuit, at which compressed air is taken at the secondary pressure lower than or equal to the primary pressure, a principal valve placed between the primary and secondary outlet, said principal valve being able to be shunted by a bypass, a choke device being placed in the bypass, the principal valve and the choke device together with further valves of the valve circuit being connected together in a circuit and the valve circuit placed in a standard venting switching setting that the secondary outlet is vented.

Abstract translation: 用于压缩空气系统的软起动装置包括主入口，在该主入口处可以供应初级压力的压缩空气，主入口通过阀回路连接到能够与负载耦合的次级出口，压缩空气 在主压力低于或等于初级压力的次级压力下，主阀设置在主出口和次出口之间，所述主阀能够由旁路分流，扼流装置放置在旁路中，主阀 并且扼流装置与阀电路的另外的阀门一起连接在一起，并且阀回路放置在标准排气开关设置中，使二次出口被排出。

公开(公告)号：US06973779B2

公开(公告)日：2005-12-13

申请号：US10782484

申请日：2004-02-19

Applicant: Adrianus Naaktgeboren ,  Guy H. J. Osselaere

Inventor： Adrianus Naaktgeboren ,  Guy H. J. Osselaere

IPC: A01B63/32 ,  A01B71/00 ,  A01F15/08 ,  F15B11/16 ,  F16D31/02

CPC classification number: A01F15/085 ,  A01B63/32 ,  A01B71/00 ,  F15B11/165 ,  F15B2211/20546 ,  F15B2211/30505 ,  F15B2211/3051 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/30585 ,  F15B2211/3111 ,  F15B2211/3127 ,  F15B2211/3144 ,  F15B2211/31576 ,  F15B2211/327 ,  F15B2211/40507 ,  F15B2211/4053 ,  F15B2211/411 ,  F15B2211/41572 ,  F15B2211/426 ,  F15B2211/428 ,  F15B2211/465 ,  F15B2211/473 ,  F15B2211/50536 ,  F15B2211/50563 ,  F15B2211/513 ,  F15B2211/5159 ,  F15B2211/6309 ,  F15B2211/6346 ,  F15B2211/7052 ,  F15B2211/7053 ,  F15B2211/7135 ,  F15B2211/7142

Abstract: An agricultural-implement hydraulic circuit includes a pump supplying pressurized fluid to a first service line and a second service line via a feed line and a device for varying the flow rate of the pump. A distributor valve is disposed between the first service line and the second service line, with the first service line and the second service line being connected and disconnected according to a position of the distributor valve. A hydraulic motor is coupled to the first service line through the valve and discharges fluid to a return line. A hydraulic actuator is coupled to the second service line. An indicator-valve assembly is coupled to the feed line, with the indicator-valve assembly including an indicator sensitive to pressure in the feed line such that the indicator indicates a predetermined pressure in the feed line to an operator.

Abstract translation: 农用液压回路包括经由进料管线将加压流体供应到第一服务管线和第二服务管线的泵以及用于改变泵的流量的装置。 分配阀设置在第一服务线和第二服务线之间，其中第一服务线和第二服务线根据分配阀的位置被连接和断开。 液压马达通过阀连接到第一服务线，并将流体排放到回流管线。 液压致动器联接到第二服务线。 指示阀组件联接到进料管线，指示器 - 阀组件包括对进料管线中的压力敏感的指示器，使得指示器指示给予操作者的进给管线中的预定压力。

公开(公告)号：US20050204736A1

公开(公告)日：2005-09-22

申请号：US11078425

申请日：2005-03-14

Applicant: Yutaka Toji ,  Hidekazu Oka

Inventor： Yutaka Toji ,  Hidekazu Oka

IPC: E02F9/22 ,  F15B11/00 ,  F15B11/042 ,  F15B20/00 ,  E03B1/00

CPC classification number: F15B20/008 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/226 ,  E02F9/2282 ,  F15B11/0423 ,  F15B2211/20553 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/3122 ,  F15B2211/3127 ,  F15B2211/329 ,  F15B2211/40515 ,  F15B2211/428 ,  F15B2211/45 ,  F15B2211/50536 ,  F15B2211/5151 ,  F15B2211/55 ,  F15B2211/6652 ,  F15B2211/6654 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/71 ,  F15B2211/7741

Abstract: A hydraulic control device for a working machine includes hydraulic actuators, a hydraulic pump which functions as a hydraulic power source, control valves which control the actuators on the basis of operations by an operating unit, a common bleed-off valve which returns excess oil to a tank via an unload passage on the basis of the operations by the operating unit, and a control unit which controls the common bleed-off valve. The common bleed-off valve is capable of setting a position for closing the unload passage when the common bleed-off valve is in a non-operating state. The control valves have center bypass passages which function as individual bleed-off passages which open when the control valves are in neutral states. Opening characteristics of the control valves are set such that the center bypass passages are closed in initial stroke periods in which the control valves move toward operating positions.

Abstract translation: 一种用于工作机械的液压控制装置包括液压致动器，用作液压动力源的液压泵，基于操作单元的操作来控制致动器的控制阀，将多余油返回的公共排放阀 基于操作单元的操作通过卸载通道的油箱，以及控制公共泄放阀的控制单元。 当公共泄放阀处于非操作状态时，公共泄放阀能够设定关闭卸载通道的位置。 控制阀具有中心旁路通道，其作为单独的泄放通道，当控制阀处于中性状态时，它们打开。 控制阀的打开特性被设定为使得中间旁通通道在控制阀朝向操作位置移动的初始行程中闭合。

公开(公告)号：US20050042121A1

公开(公告)日：2005-02-24

申请号：US10492978

申请日：2002-10-18

Applicant: Shigeru Suzuki ,  Kouichi Aoyama ,  Satoru Shimada ,  Sumiko Seki ,  Takahiko Itoh

Inventor： Shigeru Suzuki ,  Kouichi Aoyama ,  Satoru Shimada ,  Sumiko Seki ,  Takahiko Itoh

IPC: F15B11/02 ,  E02F9/22 ,  F15B11/00 ,  F15B11/16 ,  F15B21/14 ,  F04B23/00 ,  F04B41/00

CPC classification number: F15B11/165 ,  E02F9/2217 ,  F15B21/14 ,  F15B2211/205 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/212 ,  F15B2211/265 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/3116 ,  F15B2211/31594 ,  F15B2211/327 ,  F15B2211/50518 ,  F15B2211/615 ,  F15B2211/6309 ,  F15B2211/6336 ,  F15B2211/7058

Abstract: A hydraulic apparatus realizes the same function as that of a variable discharge pump by regulating a hydraulic device such as a control valve in a state always operated at a substantially constant number of revolutions with a high efficiency regardless of the type of a hydraulic pump driven by a driving source such as a heat engine or electric motor. This hydraulic apparatus drives a hydraulic pump with a driving source internally or additionally provided with a predetermined amount of inertia, so as to construct a fixed pressure hydraulic source, and further provides peripheral devices corresponding to a required load, so as to open/close a control valve according to a state of a load including an energy accumulating device, a hydraulic motor, or the like such that the load can be supplied with an operating fluid ranging from a low flow rate at a high pressure to a high flow rate at a low pressure.

Abstract translation: 液压装置实现与可变排放泵的功能相同的功能，无论液压泵的类型如何，通过将控制阀等液压装置以大致恒定的转数高效率的状态调节而实现，与液压泵的驱动方式无关 诸如热机或电动机的驱动源。 该液压装置在内部驱动具有驱动源的液压泵或者另外设置有预定量的惯性，以构成固定压力液压源，并且还提供对应于所需负载的外围装置，以便打开/关闭 控制阀根据包括能量积存装置，液压马达等的负载状态进行控制，使得可以向负载供给工作流体，该工作流体在高压下的低流量到高流量的工作流体 低压。