公开(公告)号：US20040244369A1

公开(公告)日：2004-12-09

申请号：US10772925

申请日：2004-02-05

发明人： Johann Ballert ,  Andre Droux

IPC分类号： F16D031/02

CPC分类号： F04B49/002

摘要： The present invention relates to a drive comprising a hydro machine whose injection volume is changeable, comprising an adjustment device for the changing of the injection volume of the hydro machine, comprising a first control valve which is in communication with the adjustment device and which is connected such that it effects a position of the adjustment device causing a low injection volume in a first position and effects a position of the adjustment device causingnullcompared with thisnulla large injection volume in a second position. A change in the brake torque of the hydro machine is possible in accordance with the invention in that a control device, preferably a second control valve, is provided on which an inlet pressure acts at the inlet side and which is in communication with a first control connection of the first control valve on the outlet side, with a pressure loading of the first control connection exerting a force directed in the second position of the first control valve, and with the second control valve connecting the inlet side to the first control connection of the first control valve in a region of low performance requirements.

摘要翻译： 本发明涉及一种包括其注射体积可变的液压机的驱动器，包括用于改变液压机器的进样量的调节装置，包括与调节装置连通并连接的第一控制阀 使得其影响调节装置的位置，从而在第一位置引起低注射量，并且使得调节装置的位置与第二位置的大喷射量相比较。 根据本发明，液压机的制动转矩的变化是可能的，因为设置有控制装置，优选地是第二控制阀，入口压力作用在入口侧并与第一控制器连通 第一控制阀在出口侧的连接，第一控制连接的压力负载施加指向第一控制阀的第二位置的力，并且第二控制阀将入口侧连接到第一控制连接的第一控制连接 第一个控制阀处于低性能要求的区域。

公开(公告)号：US20040237518A1

公开(公告)日：2004-12-02

申请号：US10490276

申请日：2004-03-19

发明人： Carlos A Fenny ,  David P Schulz ,  Ian L Price ,  David A Curd

IPC分类号： F16D031/02

CPC分类号： B64C13/42 ,  B64C13/504 ,  B64C27/28 ,  B64C29/0033 ,  F15B18/00 ,  F15B20/002 ,  F15B20/008 ,  Y10T137/87201 ,  Y10T137/87209

摘要： An integrated three function valve (ITFV) that combines the functions of a bypass valve (e.g. 183a, 185a, 161a) into a single assembly is disclosed. The ITFV allows continued operation after any two failures. With the integrated three function valve, no combination of electrical or hydraulic component failures, regardless of expected failure rate, will prevent an actuator from continued safe operation

摘要翻译： 公开了将旁通阀（例如，183a，185a，161a）的功能组合成单个组件的集成三功能阀（ITFV）。 ITFV允许在任何两个故障后继续运行。 使用集成的三功能阀，不考虑预期的故障率，电气或液压部件故障的组合将阻止执行器继续安全运行

公开(公告)号：US20040226292A1

公开(公告)日：2004-11-18

申请号：US10437323

申请日：2003-05-13

申请人： Sauer-Danfoss Inc.

发明人： Nianzhu Luo

IPC分类号： F16D031/02

CPC分类号： F15B13/0417 ,  E02F9/2207 ,  E02F9/2214 ,  F15B13/0402 ,  F15B13/0403

摘要： A swing speed compensation device is provided for use with a flow sharing hydraulic system. The present invention is mounted within the metering spool of a flow sharing valve and includes a poppet that is attached to a spring retainer. The spring retainer encases a compression spring which pushes against a plug and has a drain hole that, depending upon the position of the spring retainer and poppet combination, can vent excess pressure within the present invention to a hydraulic pump tank. When a flow sharing hydraulic system starts or stops, there is a rush in the fluid flow that can cause a spike in the system pressure. The present invention absorbs this pressure spike, allowing for the fluid flow to gradually increase or decrease as the system starts or stops.

摘要翻译： 提供了一种与流量共享液压系统一起使用的摆动速度补偿装置。 本发明安装在流量共享阀的计量阀芯内，并且包括附接到弹簧保持器的提升阀。 弹簧保持器包围一个推压塞子的压缩弹簧，并具有一个排水孔，根据弹簧保持器和提升阀组合的位置，可以将本发明中的过压压缩到液压泵箱。 当流量共享液压系统启动或停止时，液体流中存在可能导致系统压力尖峰的冲击。 本发明吸收该压力尖峰，允许流体流动随着系统开始或停止而逐渐增加或减少。

公开(公告)号：US20040211175A1

公开(公告)日：2004-10-28

申请号：US10815486

申请日：2004-04-01

申请人： Sauer-Danfoss (Neumunster) GmbH & Co. OGH

发明人： Axel Widemann

IPC分类号： F16D031/02

CPC分类号： F16H61/40 ,  F15B11/0445 ,  F15B2211/20546 ,  F15B2211/20561 ,  F15B2211/50518 ,  F15B2211/50545 ,  F15B2211/5154 ,  F15B2211/528 ,  F15B2211/555 ,  F15B2211/613 ,  F15B2211/7058 ,  F16H61/4104 ,  Y10T137/2617

摘要： A hydraulic spool valve is provided in which two inlet bores and an outlet bore lead into a housing. A spool-valve piston which is under the influence of compression springs on both sides can be displaced longitudinally in the housing. When a difference in pressure of the hydraulic fluid in the inlet bores occurs, the inlet bore which conducts the lower pressure in each case is connected to the outlet bore. The two compression springs are pre-stressed and have an additional expansion path. During the displacement of the spool-valve piston from a neutral central position into an extended intermediate position, the two compression springs therefore remain in operative connection with the spool-valve piston, in which case the spring forces counterbalance each other until the intermediate position is reached.

摘要翻译： 提供了一种液压滑阀，其中两个入口孔和出口孔引入壳体。 在两侧的压缩弹簧的影响下的滑阀活塞可以在壳体中纵向移位。 当入口孔中的液压流体的压力差发生时，在每种情况下传导较低压力的入口孔连接到出口孔。 两个压缩弹簧是预应力的并且具有附加的扩张路径。 在滑阀活塞从空心中心位置移动到延伸中间位置期间，两个压缩弹簧因此保持与滑阀活塞操作连接，在这种情况下，弹簧力相互平衡，直到中间位置为 到达。

公开(公告)号：US20040200215A1

公开(公告)日：2004-10-14

申请号：US10736094

申请日：2003-12-15

发明人： William E. Woollenweber ,  Jon A. Meyer

IPC分类号： F16D031/02

CPC分类号： F02B39/10 ,  F01D15/10 ,  F01D25/16 ,  F01D25/164 ,  F02B37/025 ,  F02B37/10 ,  F02B39/005 ,  F02B39/14 ,  F02C7/06 ,  F04D25/04 ,  F04D29/0563 ,  F04D29/059 ,  F04D29/668 ,  F05D2220/40 ,  F16C19/548 ,  F16C27/066 ,  F16C35/077 ,  F16C37/007 ,  F16C2360/24 ,  Y02T10/144 ,  Y10S384/901

摘要： A bearing system for a turbocharger shaft includes an elongated bearing carrier with two anti-friction ball bearings mounted in its ends and with a radially extending flange at one end that cooperates with stationary housing portions and carries thrust loads of the rotor in both directions. The elongated bearing carrier is supported within the housing by axially spaced elastic supports which permit the rotating assembly to rotate about its mass center and provide a shock and vibration cushion. The elongated bearing carrier and housing cooperate to provide a coolant cavity which communicates with the outside periphery of the elongated bearing carrier between the axially spaced elastic supports, which also act as coolant seals between the elongated bearing cavity and the bearing housing. The coolant cavity protects the bearing system and anti-friction ball bearings from heat conducted from the exhaust gas-driven turbine and also cools the housing. In addition, an externally mounted motor-generator may be carried by the turbocharger and its rotor may be connected to the turbocharger rotor by a coupling that stays connected throughout the entire operating speed range of the turbocharger, and the motor-generator electronic control is mounted on the motor housing, which is cooled by air being drawn into the turbocharger compressor.

摘要翻译： 用于涡轮增压器轴的轴承系统包括细长的轴承架，其具有安装在其端部的两个抗摩擦球轴承，并且在一端具有径向延伸的凸缘，其与固定的壳体部分配合并且在两个方向上承载转子的推力负载。 细长的轴承架通过轴向间隔的弹性支撑件支撑在壳体内，允许旋转组件围绕其质心旋转并提供冲击和振动垫。 细长的轴承承载件和壳体配合以提供冷却剂腔，该冷却剂腔与细长轴承承载件的外周连通在轴向间隔开的弹性支撑件之间，该弹性支撑件也用作细长轴承腔和轴承壳体之间的冷却剂密封件。 冷却剂腔保护轴承系统和抗摩擦球轴承免受从废气驱动涡轮机传导的热量的影响，并冷却壳体。 此外，外部安装的电动发电机可以由涡轮增压器承载，并且其转子可以通过在涡轮增压器的整个运行速度范围内保持连接的联接器连接到涡轮增压器转子，并且安装电动发电机电子控制 在由被吸入涡轮增压器压缩机的空气冷却的马达壳体上。

公开(公告)号：US20040194459A1

公开(公告)日：2004-10-07

申请号：US10408752

申请日：2003-04-07

发明人： Chandra Sekhar Namuduri

IPC分类号： F16D031/02

CPC分类号： B62D5/065 ,  B62D5/063 ,  F16D37/02 ,  F16D2037/005

摘要： A magneto-electrohydraulic power steering system for a vehicle includes a magneto-electrohydraulic power steering pump interconnecting a power steering gear of the vehicle and a drive shaft of an engine of the vehicle. The magneto-electrohydraulic power steering system also includes a controller operatively connected to the magneto-electrohydraulic power steering pump to generate a current signal to vary a speed of the magneto-electrohydraulic power steering pump.

摘要翻译： 一种用于车辆的电磁液压动力转向系统包括将车辆的动力转向器和车辆的发动机的驱动轴相互连接的磁电液力动力转向泵。 磁电动液压动力转向系统还包括可操作地连接到磁电液力动力转向泵的控制器，以产生电流信号以改变磁电液压动力转向泵的速度。

公开(公告)号：US20040194458A1

公开(公告)日：2004-10-07

申请号：US10405720

申请日：2003-04-02

发明人： Boris K. Kogan ,  William F. Lange

IPC分类号： F16D031/02

CPC分类号： F15B20/004 ,  F15B11/17 ,  F15B2211/20576 ,  F15B2211/25 ,  F15B2211/31517 ,  F15B2211/329

摘要： A hydraulic transfer valve system has a main valve selectively placing one of a primary and secondary hydraulic system in communication with a hydraulic load. A pilot valve provides a toggling action between the primary and secondary systems with respect to pressure changes in such systems.

公开(公告)号：US20040163386A1

公开(公告)日：2004-08-26

申请号：US10371079

申请日：2003-02-21

申请人： Moog Inc.

发明人： John D. Kopp ,  Thomas P. Neal

IPC分类号： F16D031/02

CPC分类号： F15B11/17 ,  F15B7/006 ,  F15B11/0365 ,  F15B2211/20561 ,  F15B2211/20576 ,  F15B2211/20584 ,  F15B2211/27 ,  F15B2211/30505 ,  F15B2211/40515 ,  F15B2211/411 ,  F15B2211/41536 ,  F15B2211/426 ,  F15B2211/7056

摘要： A tandem electrohydrostatic actuator (70) broadly includes a first piston (22) operatively arranged in a first cylinder (23), and a second piston (24) operatively arranged in a second cylinder (25). The pistons are coupled to move together. The first piston has a small extend area (35) and a large retract area (36). The second piston has a large extend area (38) and a small retract area (39). The large areas (36, 38) of the pistons are equal to one another and the small areas (35, 39) of the pistons are equal to one another. A reversible fixed-displacement first pump (45) has equal inlet and outlet flows supplied to the small areas of the first and second pistons, respectively. A reversible fixed-displacement second pump (40) has equal inlet and outlet flows supplied to the large areas of the first and second pistons, respectively. The total volume of the fluid in the actuator remains constant at all positions of the pistons. In the preferred embodiment, a connecting rod (26) joins the pistons, an output rod (29) is connected to the first piston and penetrates an end wall (30) of the first cylinder, and a stationary LVDT coil or body (31) has one end attached to an end wall (32) of the second cylinder and has its movable core connected to the connecting rod.

摘要翻译： 串联静电静电致动器（70）广泛地包括可操作地布置在第一气缸（23）中的第一活塞（22）和可操作地布置在第二气缸（25）中的第二活塞（24）。 活塞联接以一起移动。 第一活塞具有小的延伸区域（35）和大的缩回区域（36）。 第二活塞具有大的延伸区域（38）和小的缩回区域（39）。 活塞的大面积（36,38）彼此相等，并且活塞的小区域（35,39）彼此相等。 可逆的固定位移第一泵（45）具有分别供应到第一和第二活塞的小区域的相等的入口和出口流。 可逆式固定排量第二泵（40）具有相应的入口和出口流量，分别供应到第一和第二活塞的大面积区域。 执行器中的流体总体积在活塞的所有位置保持恒定。 在优选实施例中，连杆（26）连接活塞，输出杆（29）连接到第一活塞并且穿过第一气缸的端壁（30），并且固定的LVDT线圈或主体（31） 其一端连接到第二气缸的端壁（32），并且其可动芯部连接到连接杆。

公开(公告)号：US20040154295A1

公开(公告)日：2004-08-12

申请号：US10455689

申请日：2003-06-05

申请人： VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB

发明人： Young Mo Ju

IPC分类号： F16D031/02

CPC分类号： F16H61/42 ,  F04B49/002 ,  F16H61/423

摘要： The speed control apparatus for a hydraulic actuator includes a hydraulic source, an actuator connected with the hydraulic source and driven based on a supply of an operation oil, a direction switching valve which is switchably installed in a flow path between the hydraulic source and the actuator, an inclination piston which is installed between a parallel flow path in parallel connected with a flow path in a supply side of the actuator and the actuator for thereby controlling an inclination angle of an inclination plate of the actuator, a multi-step adjusting inclination piston which is driven when an operation oil is supplied, and adjusts an inclination angle of an inclination plate of the actuator based on multiple steps, and a multi-step adjusting control valve which is switchably installed in a flow path between the parallel flow path and the multi-step adjusting inclination piston, controls an operation oil supplied to the multi-step adjusting inclination piston, and adjusts a speed of the actuator. The multi-step adjusting control valve is formed of a first zone in which the actuator is rotated at a high speed, a second zone in which the actuator is rotated at an intermediate speed, and a third zone in which the actuator is rotated at a low speed.

摘要翻译： 用于液压致动器的速度控制装置包括液压源，与液压源连接并且基于操作油的供给而被驱动的致动器;方向切换阀，其可切换地安装在液压源和致动器之间的流动路径中 ，倾斜活塞，其安装在与所述致动器的供给侧中的流路并联连接的平行流路和所述致动器之间，从而控制所述致动器的倾斜板的倾斜角;多台阶调整倾斜活塞 其在供给操作油时被驱动，并且基于多个步骤来调节致动器的倾斜板的倾斜角度;以及多级调节控制阀，其可切换地安装在平行流路和 多级调节倾斜活塞，控制供给多级调节倾斜活塞的操作油，并调整为 致动器的速度。 多级调节控制阀由致动器高速旋转的第一区域，致动器以中间速度旋转的第二区域和致动器在其中旋转的第三区域形成 低速。

公开(公告)号：US20040118115A1

公开(公告)日：2004-06-24

申请号：US10731568

申请日：2003-12-09

发明人： Mark Bird ,  David Moorman ,  Gary Cochran

IPC分类号： F16D031/02

CPC分类号： F15B11/17 ,  F15B2211/20576 ,  F15B2211/633 ,  F15B2211/6336 ,  F15B2211/6654

摘要： One preferred embodiment of the present invention, provides an auxiliary hydraulic drive system having a total hydraulic flow. The system includes a primary hydraulic pump operable to provide hydraulic flow for an implement, and a flow control valve in communication with the hydraulic flow. The flow control valve operates to allow an optimum flow rate and diverts the excess flow amount when the total hydraulic flow exceeds the optimum flow rate. A secondary hydraulic pump is selectively operable to provide additional hydraulic flow. A control system is operable to engage the secondary pump when the total hydraulic flow drops below a minimum flow level; and the control system operates to disengage the secondary pump when the total hydraulic flow exceeds a maximum flow level. In a further embodiment, the invention provides a control unit for a hydraulic system. The control unit includes a sensor to measure total hydraulic fluid flow in a system; and a controller coupled to the sensor. The controller is operable to initiate additional fluid flow in the system if the total fluid flow drops below a minimum; and, is operable to reduce the fluid flow in the system if the total fluid flow exceeds a maximum.

摘要翻译： 本发明的一个优选实施例提供了具有总液压流量的辅助液压驱动系统。 该系统包括可操作以提供用于工具的液压流的主液压泵和与液压流连通的流量控制阀。 当总液压流超过最佳流速时，流量控制阀操作以允许最佳流量并转移过量流量。 二次液压泵可选择性地操作以提供附加的液压流。 当总液压流量低于最小流量时，控制系统可操作以接合次级泵; 并且当总液压流超过最大流量时，控制系统操作以使二次泵脱离。 在另一个实施例中，本发明提供一种用于液压系统的控制单元。 控制单元包括用于测量系统中总液压流体流量的传感器; 以及耦合到传感器的控制器。 如果总流体流量低于最小值，则控制器可操作地启动系统中的附加流体流动; 并且如果总流体流量超过最大值，则可操作地减少系统中的流体流量。