公开(公告)号：US20090071141A1

公开(公告)日：2009-03-19

申请号：US12206775

申请日：2008-09-09

Applicant: Bon Seok KOO

Inventor： Bon Seok KOO

IPC: F15B13/02

CPC classification number: F15B11/16 ,  F15B11/17 ,  F15B2211/20538 ,  F15B2211/20576 ,  F15B2211/275 ,  F15B2211/30525 ,  F15B2211/3116 ,  F15B2211/324 ,  F15B2211/329 ,  F15B2211/50518 ,  F15B2211/6051 ,  F15B2211/6355 ,  F15B2211/7142

Abstract: A hydraulic circuit for heavy equipment is provided, which can prevent signal pressure exceeding a predetermined pressure from being formed in a pilot signal path provided in a switching valve to sense whether the switching valve has been shifted in a hydraulic system that minimizes the discharge flow rate of a hydraulic pump when a working device such as a boom is not driven. The hydraulic circuit includes first to fourth hydraulic pumps connected to an engine, first switching valves installed in flow paths of the first hydraulic pump and shifted to control hydraulic fluid fed to a working device, second switching valves installed in flow paths of the second hydraulic pump and shifted to control hydraulic fluid fed to a working device, third switching valves installed in flow paths of the third hydraulic pump and shifted to control hydraulic fluid fed to a swing device, a pilot signal path for sensing whether the first to third switching valves are shifted, a throttling part installed in the pilot signal path to form a signal pressure, and a valve installed in a parallel flow path branch-connected to the pilot signal path and supplying the signal pressure in the pilot signal path to the pilot signal pressure supply path when a signal pressure exceeding a predetermined pressure is formed in the pilot signal path.

Abstract translation: 提供一种用于重型设备的液压回路，其可以防止在设置在切换阀中的先导信号路径中形成超过预定压力的信号压力，以检测切换阀是否已经在最小化排出流量的液压系统中移位 当没有驱动诸如起重臂的工作装置时，液压泵。 液压回路包括连接到发动机的第一至第四液压泵，安装在第一液压泵的流路中的第一切换阀，并且移动以控制供给到工作装置的液压流体;第二切换阀安装在第二液压泵 并且移动以控制供给到工作装置的液压流体，安装在第三液压泵的流路中的第三切换阀，并且移动以控制供给到摆动装置的液压流体;导频信号路径，用于检测第一至第三切换阀是否为 移动，安装在导频信号路径中以形成信号压力的节流部分，以及安装在并行流路中的阀，分支连接到导频信号路径，并将导频信号路径中的信号压力提供给导频信号压力供应 在导频信号路径中形成超过预定压力的信号压力时的路径。

公开(公告)号：US20080066460A1

公开(公告)日：2008-03-20

申请号：US11901821

申请日：2007-09-19

Applicant: Albert C. Wong ,  James L. Davison ,  Rick L. Lincoln

Inventor： Albert C. Wong ,  James L. Davison ,  Rick L. Lincoln

IPC: F15C3/00 ,  F16K15/04

CPC classification number: F15B11/162 ,  F15B2211/30585 ,  F15B2211/324 ,  F15B2211/4053 ,  F15B2211/50518 ,  F15B2211/55 ,  F15B2211/7142 ,  F15B2211/781 ,  Y10T137/7838

Abstract: A vehicular hydraulic system having a pump, flow-splitting valve, first application and second application arranged in series. The flow-splitting valve diverts a portion of the primary fluid flow to the second application when the pressure exceeds a threshold value. A valve member disposed in the flow-splitting valve defines a pressure-reducing orifice that communicates fluid across the valve member. A one-way relief valve prevents fluid flow through the pressure-reducing orifice when the pressure in the valve is below the threshold value. When the pressure exceeds the threshold value, fluid flows through relief valve and the pressure reducing orifice resulting in the movement of the valve member and exposure of a bypass port to thereby divert a portion of the primary fluid flow to the second application. The relief valve may be selectively variable to thereby provide for the adjustment of the threshold value.

Abstract translation: 一种车辆液压系统，其具有串联布置的泵，分流阀，第一应用和第二应用。 当压力超过阈值时，分流阀将主流体流的一部分转移到第二应用。 设置在分流阀中的阀构件限定了一个减压孔，其连通流体穿过阀构件。 当阀门内的压力低于阀值时，单向泄压阀防止流体流过减压孔。 当压力超过阈值时，流体流过安全阀和减压孔导致阀构件的运动和旁路端口的暴露，从而将主要流体流的一部分转移到第二应用。 安全阀可以是有选择地变化的，从而提供阈值的调节。

公开(公告)号：US20070017364A1

公开(公告)日：2007-01-25

申请号：US11426402

申请日：2006-06-26

Applicant: Luciano VENEZIANI

Inventor： Luciano VENEZIANI

IPC: F15B11/00

CPC classification number: F15B11/044 ,  F15B11/22 ,  F15B2211/20538 ,  F15B2211/30515 ,  F15B2211/30525 ,  F15B2211/324 ,  F15B2211/40507 ,  F15B2211/40515 ,  F15B2211/40523 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/50527 ,  F15B2211/50536 ,  F15B2211/50581 ,  F15B2211/5151 ,  F15B2211/7053 ,  F15B2211/71 ,  F15B2211/7107 ,  F15B2211/7128 ,  F15B2211/781 ,  Y10S414/124 ,  Y10T137/2524

Abstract: A hydraulic grip-control unit provided with at least two gripping arms driven hydraulically to seize loads while cooperating with a striker arm of the grip with the control unit in use being connected hydraulically between a hydraulic fluid source under pressure and hydraulic cylinders each of which drives a gripping arm to form a closed supply circuit in which the source feeds fluid to the cylinders connected hydraulically in parallel and with the unit including a flow divider connected along said supply circuit between said source and said cylinders to apportion the flow of the circuit between the cylinders in parallel. The divider has a nominal flow lower than the nominal flow of the control unit with the control unit also including a by-pass circuit connected in parallel to said divider, which can take on an operative configuration in which it can be traveled by fluid and a nonoperative configuration in which it cannot be traveled by the fluid with the control unit including automatic by-pass circuit piloting means designed to pilot it in the non-operative configuration when the flow required by the supply circuit is substantially lower than the nominal flow of the divider and in the operative configuration when said required flow is substantially higher than that of the divider.

Abstract translation: 液压抓地力控制单元，其设置有至少两个夹紧臂，所述至少两个夹臂被液压驱动以在与所述把手的撞针臂配合的同时与使用中的所述控制单元协同工作，以在压力下的液压流体源和液压缸之间液压连接，所述液压缸驱动 夹持臂以形成封闭的供应回路，其中所述源将流体馈送到并联液压地连接的所述气缸，并且所述单元包括在所述源和所述气缸之间沿所述供应回路连接的分流器，以分配所述回路的流动 气缸平行。 分配器具有低于控制单元的标称流量的标称流量，控制单元还包括并联连接到所述分配器的旁路电路，该旁路电路可以承受可由流体运行的可操作配置，以及 包括自动旁路电路引导装置的流体不能由流体驱动的非操作配置，该自动旁路电路引导装置被设计成在供电电路所需的流量基本上低于供电电路的标称流量时以非操作配置引导 当所述所需流量基本上高于分配器的流量时，在操作构造中。

公开(公告)号：US06938372B2

公开(公告)日：2005-09-06

申请号：US10608900

申请日：2003-06-27

Applicant: William R. Kennedy ,  John M. Kennedy

Inventor： William R. Kennedy ,  John M. Kennedy

IPC: E05F5/12 ,  E05F15/04 ,  F15B11/076 ,  E05F15/00 ,  E05F3/00 ,  E21F1/14

CPC classification number: F15B11/076 ,  E05F5/12 ,  E05F15/53 ,  E05Y2201/21 ,  E05Y2201/256 ,  E05Y2201/264 ,  E05Y2900/116 ,  E05Y2900/132 ,  E05Y2900/40 ,  F15B2211/2053 ,  F15B2211/212 ,  F15B2211/216 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3111 ,  F15B2211/31588 ,  F15B2211/324 ,  F15B2211/40507 ,  F15B2211/40515 ,  F15B2211/40584 ,  F15B2211/41536 ,  F15B2211/45 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/473 ,  F15B2211/50518 ,  F15B2211/50554 ,  F15B2211/55 ,  F15B2211/615 ,  F15B2211/6355 ,  F15B2211/7128 ,  F15B2211/75 ,  Y10T16/27 ,  Y10T16/281 ,  Y10T16/53613

Abstract: A mine door assembly has a frame. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door leaf is powered by a pneumatic actuator. The door installation also has a hydraulic checking system for controlling the speed of the door leaf as it moves back and forth between open and closed positions. A pneumatically-powered control system may be provided to control the door installation. The pneumatic control system may comprise a calibrated vent to shorten the delay in the response of the door leaf to direction from the control system to stop moving. The pneumatic control system may also comprise a limit valve to prevent the door installation from opening when a second door installation is open, thereby preventing both door installations in an air lock from being open at the same time.

Abstract translation: 矿门组件有一个框架。 至少一个门扇安装在框架上，用于在打开和关闭位置之间摆动。 门扇的移动由气动执行机构驱动。 门安装还具有液压检查系统，用于控制门扇在打开和关闭位置之间来回移动的速度。 可以提供气动控制系统来控制门安装。 气动控制系统可以包括校准通气口，以缩短门扇对从控制系统到停止运动的方向的响应的延迟。 气动控制系统还可以包括限位阀，以在第二门安装打开时防止门安装打开，从而防止空气锁中的两个门装置同时打开。

公开(公告)号：US06871575B2

公开(公告)日：2005-03-29

申请号：US10400160

申请日：2003-03-26

Applicant: Isao Korogi

Inventor： Isao Korogi

IPC: F15B11/00 ,  E02F3/43 ,  E02F9/22 ,  F15B11/024 ,  F15B13/04 ,  G05G5/00 ,  G05G9/047

CPC classification number: F15B11/024 ,  E02F9/2217 ,  F15B2013/0413 ,  F15B2211/20523 ,  F15B2211/30525 ,  F15B2211/3116 ,  F15B2211/3127 ,  F15B2211/3133 ,  F15B2211/31576 ,  F15B2211/324 ,  F15B2211/71 ,  F15B2211/78 ,  F15B2211/88 ,  G05G5/005 ,  G05G9/047 ,  Y10T137/87072

Abstract: A hydraulic control apparatus for controlling a hydraulic cylinder for an implement selectively mounted to a work vehicle. The apparatus includes a hydraulic power source, a four-position changeover control valve disposed between the hydraulic cylinder and the hydraulic power source, and an operational mechanism for operating the four-position changeover control valve. The four-position changeover control valve has a first position for moving a rod of the hydraulic cylinder in one direction, a second position for stopping the rod of the hydraulic cylinder, a third position for moving the hydraulic cylinder rod at a high speed in the other direction with using a function of a regenerative circuit and a fourth position for moving the hydraulic cylinder rod in the other direction at a standard speed without using the function of the regenerative circuit, in the mentioned order. The operational mechanism includes, along an operational movement path thereof, a rollback position, a neutral position, a rapid dump position and a standard dump position, the rollback position corresponding to the first position, the neutral position corresponding to the second position, the rapid dump position corresponding to the third position, the standard dump position corresponding to the fourth position, respectively.

Abstract translation: 一种用于控制用于选择性地安装到作业车辆上的工具的液压缸的液压控制装置。 该装置包括液压动力源，设置在液压缸和液压动力源之间的四位置切换控制阀以及用于操作四位置切换控制阀的操作机构。 四位置切换控制阀具有用于沿一个方向移动液压缸的杆的第一位置，用于停止液压缸的杆的第二位置，用于使液压缸杆高速移动的第三位置 使用再生电路的功能的另一方向和第四位置，以不以再生电路的功能为标准速度在另一方向上移动液压缸杆。 操作机构沿其操作移动路径包括回滚位置，中立位置，快速倾倒位置和标准倾倒位置，对应于第一位置的回滚位置，对应于第二位置的中立位置，快速 对应于第三位置的倾倒位置，分别对应于第四位置的标准倾倒位置。

公开(公告)号：US20040093769A1

公开(公告)日：2004-05-20

申请号：US10433842

申请日：2003-12-08

Inventor： Masami Kondou

IPC: E02F005/02

CPC classification number: E02F9/2267 ,  E02F9/2239 ,  E02F9/226 ,  E02F9/2271 ,  E02F9/2292 ,  F15B11/042 ,  F15B11/044 ,  F15B13/0403 ,  F15B2211/20576 ,  F15B2211/30505 ,  F15B2211/30515 ,  F15B2211/30525 ,  F15B2211/3116 ,  F15B2211/3127 ,  F15B2211/3138 ,  F15B2211/324 ,  F15B2211/329 ,  F15B2211/351 ,  F15B2211/353 ,  F15B2211/50536 ,  F15B2211/5059 ,  F15B2211/5151 ,  F15B2211/55 ,  F15B2211/7053 ,  F15B2211/7058

Abstract: In an excavating/slewing work truck, the boom falls freely at the time of lowering operation without requiring any power but the flow rate of a pump increases excessively when the speed is balanced with other acutuators and power loss is inevitable for enhancing the operability. In order to eliminate this inconvenience, a first oil path (41) connecting a bottom side cylinder port (CB) and a tank port (T2), a second oil path (42) connecting a pump port (P2) and a rod side cylinder port (CR), and a third oil path (43) connecting a pump port (P1) and a tank port (T1) are provided, respectively, with first, second and third restrictors (61), (62) and (63) at the boom down position of a change-over valve (51) for the boom cylinder of an excavating/slewing work truck, wherein the first restrictor (61) restricts by such an amount as the work machine lowers gravitationally an the second restrictor (62) restricts by such an amount as the pressure on the boom side is not exceeded.

Abstract translation: 在挖掘/回转工作车辆中，在降低作业时，吊臂自由下降，而不需要任何动力，但是当速度与其他导引器平衡时，泵的流量过大，因此为了提高操作性而不可避免地发生功率损失。 为了消除这种不便，连接底侧气缸端口（CB）和油箱口（T2）的第一油路（41），连接泵口（P2）和杆侧气缸（P2）的第二油路 分别与第一，第二和第三限流器（61），（62）和（63）分别连接泵口（P1）和罐口（T1）的第三油路（CR）和第三油路（43） 在用于挖掘/回转作业车的动臂缸的转换阀（51）的悬臂下降位置处，其中第一限制器（61）受到重力作用下限制的第二限制器（62）的限制 ）限制不超过悬臂侧的压力的量。

公开(公告)号：US20020134227A1

公开(公告)日：2002-09-26

申请号：US09936812

申请日：2001-09-18

Inventor： Kenichiro Nakatani ,  Takashi Kanai ,  Yasutaka Tsuruga ,  Junya Kawamoto ,  Satoshi Hamamoto ,  Yasuharu Okazaki ,  Yukiaki Nagao

IPC: F15B011/08

CPC classification number: 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

Abstract: An actuator lock switching valve 50 is provided which communicates a drain line 52 and a pilot line 53 with each other when the valve 50 is in a position C, and which communicates pilot lines 51, 53 with each other when it is shifted to a position D. The pilot line 51 is connected to a delivery line 7 of a hydraulic pump 10, and the pilot line 53 is connected to pressure receiving sections 28a, 28b provided at ends of the pressure compensating valves 21a, 21b on the side acting in the closing direction. The actuator lock switching valve 50 has a pressure receiving section 55 connected to the output side of a pilot lock switching valve 43, and is switched over in interlock with shifting of the switching valve 43. In a hydraulic drive system including pressure compensating valves controlled by an LS system, an actuator can be locked with a simple construction and can be prevented from malfunctioning in an inoperative condition while an engine is being driven, even when the system includes a mechanically shifted directional control valve, or even when a mechanically shifted directional control valve is retrofitted to the system.

Abstract translation: 提供了一种致动器锁定切换阀50，其在阀50位于位置C时使排水管线52和先导管路53彼此连通，并且当其移动到位置时将引导管线51,53彼此连通 先导管路51与液压泵10的输出管线7连接，先导管路53与压力补偿阀21a，21b的端部的压力接收部28a，28b连接， 关闭方向。 执行器锁定切换阀50具有连接到先导锁定切换阀43的输出侧的受压部55，并且与切换阀43的移动联动地切换。在液压驱动系统中，包括由 LS系统中，致动器可以以简单的结构锁定，并且可以在发动机被驱动时防止在不工作状态下的故障，即使当系统包括机械移动的方向控制阀时，或者甚至当机械移动的方向控制 阀门更新到系统。

公开(公告)号：US06418715B1

公开(公告)日：2002-07-16

申请号：US09711874

申请日：2000-11-14

Applicant: Gerhard Huber

Inventor： Gerhard Huber

IPC: F16D3102

CPC classification number: F15B20/004 ,  B60J7/1273 ,  E05F15/50 ,  E05F15/53 ,  E05Y2900/542 ,  F15B11/024 ,  F15B13/10 ,  F15B2211/20561 ,  F15B2211/3133 ,  F15B2211/324 ,  F15B2211/327 ,  F15B2211/7053

Abstract: The two working chambers (2, 2′, 3) of a working cylinder (1) of a hydraulic actuation arrangement may be directly connected with one another via a switchable dual-position valve (11), if necessary, whereby a resistance-free manual displacement of the components to be actuated is possible to a large extent—regardless of the working cylinder (1) that is driven by the hydraulic circuit (6) or also in case of a malfunctioning or a turned-off pressure medium source.

Abstract translation: 如果需要，液压致动装置的工作缸（1）的两个工作室（2,2'，3）可以经由可切换的双位置阀（11）直接相互连接，由此无电阻 不管由液压回路（6）驱动的工作缸（1）还是在故障或关闭压力介质源的情况下，要被致动的部件的手动位移都可能在很大程度上。

公开(公告)号：US20020050295A1

公开(公告)日：2002-05-02

申请号：US09981103

申请日：2001-10-17

Inventor： George T. Fiala ,  David W. Swaim

IPC: F16K011/065

CPC classification number: F15B11/028 ,  F15B13/01 ,  F15B21/047 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3111 ,  F15B2211/31576 ,  F15B2211/324 ,  F15B2211/50518 ,  F15B2211/528 ,  F15B2211/55 ,  F15B2211/7052 ,  F15B2211/7053 ,  F15B2211/8609 ,  Y10T137/2544 ,  Y10T137/87241

Abstract: An insert or cartridge that fits into a cavity in a valve body provides a check valve function and an anti-cavitation function and a pressure relief function. This insert is substantially circular and has an internal cavity with a valve assembly that has two pairs of valve seats, one pair of valve seats providing the anti-cavitation function and the other pair of valve seats providing the pressure relief function. The outside of the insert itself engages with a sealing surface in the cavity in the valve body to provide the check valve function.

Abstract translation: 安装在阀体中的空腔中的插入物或药筒可提供止回阀功能和抗气蚀功能以及减压功能。 该插入件基本上是圆形的并且具有带有阀组件的内腔，阀组件具有两对阀座，一对阀座提供防空穴功能，另一对阀座提供减压功能。 插件本身的外部与阀体中的空腔中的密封表面接合以提供止回阀功能。

公开(公告)号：US06192782B1

公开(公告)日：2001-02-27

申请号：US09224160

申请日：1998-12-31

Applicant: John W. Rogers

Inventor： John W. Rogers

IPC: F01C2112

CPC classification number: F15B11/0423 ,  F15B11/028 ,  F15B2211/20538 ,  F15B2211/27 ,  F15B2211/30525 ,  F15B2211/324 ,  F15B2211/50536 ,  F15B2211/5151 ,  F15B2211/526 ,  F15B2211/528 ,  F15B2211/55 ,  F15B2211/57 ,  F15B2211/615 ,  F15B2211/6309 ,  F15B2211/7051 ,  F15B2211/7058 ,  F15B2211/71

Abstract: A fluid pressure control system for limiting the torque output of a positive displacement hydraulic motor (21) for rotating a screw anchor (11, 11′) into the ground. A normally closed solenoid operated control valve (76) is mounted in a bypass line (86) between the high pressure supply line (30) and the low pressure exhaust line (36). A plurality of electro-hydraulic switches (72) are arranged for setting at different predetermined fluid pressures and are in fluid communication with a differential pressure sensing chamber (63). Upon turning on of a selected switch (72) having the desired pressure level, the reaching of the desired pressure level activates the selected switch (72) for actuation of solenoid operated control valve (76) to move control valve (76) to an open position as shown in FIG. 3 to bypass fluid from high pressure line (30) to exhaust line (36) to limit the torque output of the motor (21).

Abstract translation: 一种用于限制用于将螺钉（11,11'）旋转到地面中的正排量液压马达（21）的扭矩输出的流体压力控制系统。 常闭电磁操作控制阀（76）安装在高压供应管线（30）和低压排气管路（36）之间的旁通管路（86）中。 多个电动液压开关（72）被布置成用于设定在不同的预定流体压力并且与差压检测室（63）流体连通。 在打开具有所需压力水平的所选择的开关（72）时，达到期望的压力水平启动所选择的开关（72），用于致动电磁操作的控制阀（76）以将控制阀（76）移动到打开 位置。 以将流体从高压管线（30）旁通到排气管线（36）以限制电动机（21）的扭矩输出。