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21. 发明申请

US20030150210A1 Fluid pressure circuit 有权
标题翻译：流体压力回路
公开(公告)号：US20030150210A1
公开(公告)日：2003-08-14
申请号：US10344090
申请日：2003-02-07
发明人： Yoshiyuki Shimada
IPC分类号： F16D031/02
CPC分类号： E02F9/2217 , E02F9/2228 , E02F9/2242 , E02F9/2285 , E02F9/2292 , F15B11/024 , F15B11/17 , F15B21/14 , F15B2211/20576 , F15B2211/30525 , F15B2211/3056 , F15B2211/3058 , F15B2211/3116 , F15B2211/31582 , F15B2211/327 , F15B2211/6346 , F15B2211/6654 , F15B2211/78
摘要： To perform boom-down operation by operating a boom cylinder (6) by an external load (W) while simultaneously operating an arm cylinder (26) or a bucket cylinder (27) in the state the bucket is off the ground, a first boom directional control valve (2) and a regeneration boom valve (13) are controlled to the neutral position and the open position respectively so that the hydraulic oil is regenerated from a line (9) located at the oil-returning side of the boom cylinder (6) through the regeneration boom valve (13) to a line (5) located at the oil-feeding side. Therefore, the volume of the hydraulic oil that can be supplied from the pressurized oil source (4) to the arm cylinder (26) or the bucket cylinder (27) via the second arm directional control valve (24) or the bucket directional control valve (25) is increased by the amount equivalent to the amount of the oil that is not supplied from the pressurized oil source (4) to the boom cylinder (6). As the circuit according to the invention enables the arm cylinder (26) or the bucket cylinder (27) to work faster, it increases the operating efficiency of the hydraulic excavator when its hydraulic actuators are operated simultaneously.
摘要翻译：在铲斗离开地面的状态下同时操作臂缸（26）或铲斗缸（27），通过外部负载（W）操作动臂缸（6）来进行动臂下降操作，第一吊杆方向控制阀（2）和再生动臂阀（13）分别被控制到中立位置和打开位置，使得液压油从位于动臂缸的回油侧的管线（9）再生 6）通过再生悬臂阀（13）到位于给油侧的管线（5）。因此，能够经由第二臂方向控制阀（24）或铲斗方向控制阀（24）从压缩油源（4）向斗杆缸（26）或铲斗缸（27）供给的液压油的体积（25）增加相当于未从加压油源（4）供给到动臂缸（6）的油量的量。由于根据本发明的电路使得臂缸（26）或铲斗缸（27）能够更快地工作，所以当其液压致动器同时操作时，提高了液压挖掘机的操作效率。

22. 发明申请

US20030145588A1 Bi-rotational, two-stage hydraulic system 有权
标题翻译：双旋转两级液压系统
公开(公告)号：US20030145588A1
公开(公告)日：2003-08-07
申请号：US10351926
申请日：2003-01-24
发明人： Paul T. Kubinski , David J. Anderson
IPC分类号： F16D031/02
CPC分类号： F15B7/08 , B63H20/10 , F15B7/006 , F15B11/02 , F15B11/022 , F15B11/0426 , F15B2211/20546 , F15B2211/20561 , F15B2211/20576 , F15B2211/30505 , F15B2211/3051 , F15B2211/50518 , F15B2211/50536 , F15B2211/5151 , F15B2211/528 , F15B2211/55 , F15B2211/7053 , F15B2211/775
摘要： A hydraulic system for an actuator provides staged operation during extend and retract. A pair of reversible pumps are conjointly driven by a reversible motor. A relief valve in the retract circuit directs fluid to tank when fluid pressure increases above a predetermined value. An unloader valve in the extend circuit is responsive to pressure at a first stage pump to direct flow to tank when the pressure increases above a second predetermined value. A non-return check valve connected between the pumps in the extend circuit closes the flow circuit to the second stage pump during high loads, so that the flow from the second stage pump goes to tank, and the return flow from the actuator goes only to the first stage pump. The non-return check valve is responsive (via a signal line to the retract circuit portion) to the pressure in the extend and retract circuit portions.
摘要翻译：用于致动器的液压系统在伸展和缩回期间提供分级操作。一对可逆泵由可逆电机联合驱动。当流体压力增加到高于预定值时，缩回回路中的溢流阀将流体引导至罐。当压力增加到高于第二预定值时，延伸回路中的卸载阀响应于第一级泵处的压力以引导流向罐。连接在延伸回路中的泵之间的止回止回阀在高负载期间关闭到第二级泵的流动回路，使得来自第二级泵的流量进入罐，并且来自致动器的返回流仅仅到第一级泵。止回止回阀响应（通过到缩回电路部分的信号线）到延伸和缩回电路部分中的压力。

23. 发明申请

US20030136125A1 Load-settable rapid lifting jack 审中-公开
标题翻译：负载可设定快速提升千斤顶
公开(公告)号：US20030136125A1
公开(公告)日：2003-07-24
申请号：US10052272
申请日：2002-01-23
申请人： SHINN FU CORPORATION
发明人： Victor Hung
IPC分类号： F16D031/02
CPC分类号： F15B7/04 , B66F3/42
摘要： A load-settable rapid lifting jack comprises a switching oil cylinder between a pump oil chamber and an inner oil tank. A little and limited hydraulic oil in the pump oil chamber is utilized to push a switching piston as the hydraulic oil flows into the switching oil cylinder; and a larger amount of hydraulic oil is provided to the inner oil tank of the jack so that the jack lifting spindle is lifted rapidly in a predetermined load. Moreover, when the load is over a rated value, a sequential valve can be opened rapidly so as to restore to a general lifted speed.
摘要翻译：负载可设置的快速提升千斤顶包括在泵油室和内油箱之间的开关油缸。在液压油流入开关油缸时，利用泵油室中的少量有限的液压油来推动切换活塞; 并且将较大量的液压油提供给千斤顶的内部油箱，使得千斤顶提升主轴以预定的载荷快速提升。此外，当负载超过额定值时，可以快速打开顺序阀，以恢复到一般的提升速度。

24. 发明申请

US20030136124A1 Control device for hydraulically operated hoisting mechanisms 失效
标题翻译：液压操作提升机构的控制装置
公开(公告)号：US20030136124A1
公开(公告)日：2003-07-24
申请号：US10349174
申请日：2003-01-23
申请人： Hydac Fluidtechnik GmbH
发明人： Hermann Albert , Peter Bruck , Alois Hoffmann
IPC分类号： F16D031/02
CPC分类号： F15B20/002 , B66F9/22 , F15B11/003 , F15B11/05 , F15B20/008 , F15B2211/40515 , F15B2211/40576 , F15B2211/413 , F15B2211/41581 , F15B2211/46 , F15B2211/5756 , F15B2211/6355 , F15B2211/7052 , F15B2211/72
摘要： A control device for hydraulically operated hoisting mechanisms used to raise and lower loads includes an electrically controllable throttle valve connected to a return line of the hoisting mechanism, and a pressure scale with at least one blocking position and one control position. The pressure scale operates in conjunction with an unblocking mechanism. When in its normal position, the pressure scale blocks the return line. The pressure scale assumes its control position in lowering of a load as a result of triggering of the unblocking mechanism. In the event of failure of the throttle valve, the pressure scale may be moved to its blocking position by the unblocking mechanism. In the event of failure of the pressure scale, the throttle valve assumes its blocking position. The load retention function is performed by two series-connected closed hydraulic actuators which can be electrically controlled individually. Both a hydraulic redundancy and an electric redundancy of the load retention function are provided as a result, so that higher safety requirements are satisfied.
摘要翻译：用于提升和降低载荷的用于液压操作的提升机构的控制装置包括连接到提升机构的返回管路的电控制的节流阀以及具有至少一个阻塞位置和一个控制位置的压力秤。压力表与解锁机构一起工作。当处于正常位置时，压力标尺阻挡返回线。由于触发了解锁机构，压力秤承受了负载降低的控制位置。在节气门故障的情况下，通过解锁机构可将压力秤移动到其阻挡位置。在压力表失效的情况下，节流阀处于阻塞位置。负载保持功能由两个串联的闭合液压执行器执行，可以单独电气控制。因此，提供了负载保持功能的液压冗余和电冗余，从而满足更高的安全性要求。

25. 发明申请

US20030115864A1 Hydraulic power boost system for a work vehicle 失效
公开(公告)号：US20030115864A1
公开(公告)日：2003-06-26
申请号：US10033820
申请日：2001-12-20
申请人： CASE CORPORATION, a Delaware corporation
发明人： Roger D. Mickelson
IPC分类号： F16D031/02
CPC分类号： E02F9/2282 , E02F9/2239 , E02F9/2292 , F15B11/028 , F15B11/17 , F15B2211/20538 , F15B2211/20576 , F15B2211/30505 , F15B2211/3051 , F15B2211/30525 , F15B2211/3116 , F15B2211/3127 , F15B2211/324 , F15B2211/327 , F15B2211/40515 , F15B2211/411 , F15B2211/413 , F15B2211/41563 , F15B2211/45 , F15B2211/50518 , F15B2211/50527 , F15B2211/5059 , F15B2211/5151 , F15B2211/528 , F15B2211/55 , F15B2211/6346 , F15B2211/6653 , F15B2211/71
摘要： A backhoe hydraulic system includes a first source of hydraulic fluid, a tank or reservoir, a boom lift cylinder, and a directional control valve that controls fluid flow between the boom swing cylinder and the tank and reservoir. The system also includes a second source of hydraulic fluid (at a higher pressure than the first source) that is connected to one port of the boom lift cylinder via a separate boost valve.

26. 发明申请

US20030110766A1 Hydraulic system with improved efficiency 审中-公开
标题翻译：液压系统效率提高
公开(公告)号：US20030110766A1
公开(公告)日：2003-06-19
申请号：US10022004
申请日：2001-12-13
发明人： Willibald G. Berlinger , Francis J. Raab
IPC分类号： F16D031/02
CPC分类号： F15B11/032 , F15B1/024 , F15B21/14 , F15B2211/212 , F15B2211/214 , F15B2211/7058 , F15B2211/7121
摘要： A hydraulic system, particularly suitable for use in a work machine, is provided with a hydraulic pressure source. A hydraulic transformer has an inlet and an outlet, with the inlet being coupled with the pressure source. A bypass valve operatively couples at least one hydraulic motor selectively either with the pressure source or the hydraulic transformer outlet, depending upon an operating characteristic associated with at least one hydraulic motor. Each hydraulic motor is operated at a high efficiency by providing the inlet hydraulic fluid at an amplified or non-amplified state.
摘要翻译：特别适用于作业机械的液压系统设置有液压源。液压变压器具有入口和出口，入口与压力源相连。根据与至少一个液压马达相关联的操作特性，旁通阀可选择性地将至少一个液压马达选择性地与压力源或液压变压器出口耦合。通过提供处于放大或非放大状态的入口液压流体，每个液压马达都以高效率运行。

27. 发明申请

US20030074895A1 Seal and valve systems and methods for use in expanders and compressors of energy conversion systems 失效
标题翻译：用于能量转换系统的膨胀机和压缩机的密封和阀门系统和方法
公开(公告)号：US20030074895A1
公开(公告)日：2003-04-24
申请号：US10279361
申请日：2002-10-24
发明人： Rory S. McFarland
IPC分类号： F16D031/02
CPC分类号： F02C1/10 , F01K25/10 , Y10T137/86405
摘要： An epicycling device with improved sealing. A housing is provided with adjacent walls spaced apart to allow a substantially planar partition to pass. A piston is linked eccentrically to a drive shaft and positioned within the housing, has a cross sectional shape for mating with the housing walls and includes a circular recessed surface at its corners. Seal housings with a hollow cylindrical cross sectional shape are provided at each corner of the piston housing. An inner seal element is positioned within each of the recessed surfaces with the inner seal element including an elongate cylindrical body with a slot therethrough. An outer seal element is positioned within the seal housings with the outer seal element including an elongate cylindrical body with a slot. A partition is positioned between each pair of the inner and outer seal elements and slidably engaged with the slots in the seal elements.
摘要翻译：具有改进密封性能的行星齿轮装置。壳体设置有间隔开的相邻壁，以允许基本平坦的隔板通过。活塞偏心地连接到驱动轴并且定位在壳体内，具有用于与壳体壁配合的横截面形状，并且在其拐角处包括圆形凹入表面。具有中空圆柱形截面形状的密封壳体设置在活塞壳体的每个角部。内部密封元件定位在每个凹入表面内，其中内密封元件包括具有穿过其中的槽的细长圆柱体。外密封元件定位在密封壳体内，外密封元件包括具有槽的细长圆柱体。分隔件位于每对内密封元件和外密封元件之间，并且与密封元件中的狭槽可滑动地接合。

28. 发明申请

US20030070428A1 Electrohydraulic motor pump aggregate, attachable element and pressure limiting valve 有权
标题翻译：电动马达泵集合体，可附接元件和限压阀
公开(公告)号：US20030070428A1
公开(公告)日：2003-04-17
申请号：US10265898
申请日：2002-10-07
发明人： Martin Heusser , Gerhard Lorner
IPC分类号： F16D031/02
CPC分类号： F15B11/028 , F04B17/03 , F04B23/02 , F04B49/10 , F04B53/04 , F15B20/00 , F15B2211/20515 , F15B2211/20592 , F15B2211/30505 , F15B2211/30525 , F15B2211/3116 , F15B2211/327 , F15B2211/50518 , F15B2211/5151 , F15B2211/5159 , F15B2211/55 , F15B2211/7053
摘要： An electromotor M of a electrohydraulic motor pump aggregate G drives at least one pump stage P, P1, P3. An attached element C is inserted between at least one pressure side port of the pump stage, a return line 13, and at least one consumer port A, B, 5, 6. A multiways control valve 3 is installed between the consumer port and the pressure side port. A pressure limiting valve R1, R2 constructed as a seated valve is installed between the consumer port A, B, 5, 6 and the return line 13. The motor pump aggregate G has an automatic hydraulic pressure relieving device D for relieving the system pressure whenever the electromotor M is switched off.
摘要翻译：电动液压马达泵集合体G的电动机M驱动至少一个泵级P，P1，P3。附接元件C插入在泵级的至少一个压力侧端口，返回管线13和至少一个消耗端口A，B，5,6之间。多路控制阀3安装在消耗端口和压力端口。构成座阀的限压阀R1，R2安装在消耗端口A，B，5,6和回流管13之间。电动泵组G具有自动液压解除装置D，用于每次释放系统压力电动机M关闭。

29. 发明申请

US20030061810A1 Torque converter 有权
标题翻译：转矩转换器
公开(公告)号：US20030061810A1
公开(公告)日：2003-04-03
申请号：US10251831
申请日：2002-09-23
申请人： JATCO Ltd
发明人： Katsuhiko Okada , Toshiaki Noda , Keichi Tatewaki
IPC分类号： F16D031/02 , F16D033/00
CPC分类号： F16H41/26 , F16H45/02 , F16H2045/0294
摘要： In a torque converter comprised of three major rotating elements, namely a pump impeller, a turbine runner to which a driving power is transmitted through a working fluid from the pump impeller, and a stator disposed between the pump impeller and the turbine runner, a flattening ratio L/D of a sum L of an pump-impeller axial length and a turbine-runner axial length to a torque-converter nominal diameter D is set to be less than or equal to 0.21. In order to balance contradictory requirements, namely reduced curvature loss, i.e., enhanced converter efficiency, proper rate-of-change in working-fluid flow passage area, and proper breakaway of working fluid from each turbine blade, a ratio r/R of a radius of curvature r of a turbine-core outer peripheral curved surface to a radius of curvature R of a turbine-shell outer peripheral curved surface being set to satisfy a predetermined inequality 0.3nullr/Rnull0.5.
摘要翻译：在由三个主旋转元件（即泵叶轮），驱动力通过来自泵叶轮的工作流体传递的涡轮机转子和设置在泵叶轮与涡轮机转轮之间的定子构成的变矩器中，泵叶轮轴向长度和涡轮转轮轴向长度的和L与转矩转换器公称直径D的比L / D设定为小于或等于0.21。为了平衡相互矛盾的要求，即减小的曲率损失，即提高的转换器效率，工作流体流动通道面积的适当变化率，以及工作流体与每个涡轮叶片的适当分离，比例r / R 将涡轮机壳外周曲面的曲率半径r设定为满足规定的不等式0.3 <= r / R <= 0.5的涡轮壳外周曲面的曲率半径R。

30. 发明申请

US20030056507A1 Hydraulic control device 失效
标题翻译：液压控制装置
公开(公告)号：US20030056507A1
公开(公告)日：2003-03-27
申请号：US10191627
申请日：2002-07-08
发明人： Laurentius Andreas Gerardus Mentink
IPC分类号： F16D031/02
CPC分类号： F15B15/223 , F15B2211/20561
摘要： A hydraulic control device having a first hydraulic actuator provided with a cylinder space, in which a piston/piston rod assembly is accommodated in such a way that it can move to and fro between first and second end positions. In the cylinder space the piston/piston rod assembly bounds a first chamber and second chamber, the volume of the first chamber being at its smallest if the piston/piston rod assembly is situated in the first end position, and the volume of the second chamber being at its smallest if the piston/piston rod assembly is situated in the second end position. The housing is provided with a first and a second connection for the supply and discharge of hydraulic fluid, which connections are in communication with the first and the second chamber by way of a first and a second opening respectively. The damping means are achieved by the fact that the piston/piston rod assembly is provided with shut-off means, which, during movement of the piston/piston rod assembly from the first to the second end position, are designed to shut off the second opening of the cylinder space before the piston/piston rod assembly reaches the second end position. The first hydraulic actuator is further provided with a third connection, which by way of a third opening is in communication with the second chamber in any position of the piston/piston rod assembly. The hydraulic control device further comprises a throttling facility, preferably a flow-regulating valve which is connected to the third opening, for the purpose of controlling the volume flow of hydraulic fluid out of the second chamber if the second opening has been shut off by the shut-off means.
摘要翻译：一种液压控制装置，具有设置有气缸空间的第一液压致动器，其中活塞/活塞杆组件以这样一种方式被容纳，使得其能够在第一和第二端部位置之间来回移动。在气缸空间中，活塞/活塞杆组件限定第一腔室和第二腔室，如果活塞/活塞杆组件位于第一端部位置，则第一腔室的容积处于其最小值，并且第二腔室的体积如果活塞/活塞杆组件位于第二终端位置，则最小。壳体设置有用于供应和排出液压流体的第一和第二连接件，该连接件分别通过第一和第二开口与第一和第二腔室连通。阻尼装置通过以下事实实现：活塞/活塞杆组件设置有切断装置，该活塞/活塞杆组件在活塞/活塞杆组件从第一至第二终端位置移动期间被设计成切断第二在活塞/活塞杆组件到达第二端位置之前打开气缸空间。第一液压致动器还设置有第三连接件，第三连接件通过第三开口在活塞/活塞杆组件的任何位置与第二腔室连通。液压控制装置还包括节流装置，优选地连接到第三开口的流量调节阀，以便如果第二开口已经被第二开口关闭，则控制液压流体从第二室流出的体积流量关闭手段。

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