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1. 发明授权

US11318988B2 Hydraulic steering control system 有权
公开(公告)号：US11318988B2
公开(公告)日：2022-05-03
申请号：US16247056
申请日：2019-01-14
申请人： Caterpillar Inc.
发明人： Edward W. Mate , John R. Connolly
IPC分类号： B62D5/06 , B62D5/087
摘要： An autonomous steering control unit for a hydraulic steering control system has a pilot selector valve, primary and secondary electro-hydraulic (EH) steering valves, and an output selector valve. In a primary autonomous steering mode, the primary EH steering valve operates to output pilot fluid from the pilot selector valve through the output selector valve to the steering control system to control steering of a work machine while the pilot selector valve and the output selector valve isolate the secondary EH steering valve from the steering control system. In a secondary autonomous steering mode, the secondary EH steering valve operates to output pilot fluid through the output selector valve to the steering control system while the primary EH steering valve is isolated from the steering control system. In alternative embodiments, a load sense selector valve alternately connects an dynamic load sense line to the operative steering valve.

2. 发明申请

US20210381573A1 DYNAMIC LOAD DAMPING APPARATUS 有权
公开(公告)号：US20210381573A1
公开(公告)日：2021-12-09
申请号：US16893695
申请日：2020-06-05
申请人： The Boeing Company
发明人： Justin Christenson
IPC分类号： F16F9/46 , B62D6/06 , B62D5/087
摘要： A dynamic load damping apparatus is employed in a hydraulic steering system control circuit of an aircraft. The dynamic load damping apparatus is positioned in the hydraulic steering system control circuit in parallel with a control valve of the control circuit that functions as the hydraulic fluid source of the control circuit and an actuator that controls movements of a nose gear of the aircraft. The dynamic load damping apparatus dampens loads transmitted to the hydraulic actuator that controls the steering movements of the nose gear on the aircraft.

3. 发明申请

US20180009471A1 LOAD-SENSING SYSTEM 审中-公开
公开(公告)号：US20180009471A1
公开(公告)日：2018-01-11
申请号：US15205472
申请日：2016-07-08
申请人： Eaton Corporation
发明人： William John Novacek
IPC分类号： B62D5/06 , B62D5/09 , F15B13/04 , B62D5/087 , F15B11/08 , B62D6/10 , B62D5/12
CPC分类号： B62D5/061 , B62D5/062 , B62D5/087 , B62D5/09 , B62D5/12 , B62D6/10 , F15B11/08 , F15B11/162 , F15B13/0401 , F15B2211/30 , F15B2211/4053 , F15B2211/428 , F15B2211/71 , F15B2211/781
摘要： The present disclosure relates to a load-sense system such as a load-sense steering system that operates in a static load-sense mode for low flows and operates in a dynamic load-sense mode for high flows.

4. 发明授权

US09511797B2 Integral power steering device 有权
标题翻译：整体动力转向装置
公开(公告)号：US09511797B2
公开(公告)日：2016-12-06
申请号：US14760124
申请日：2013-12-27
申请人： HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.
发明人： Sosuke Sunaga , Shogo Ishikawa
IPC分类号： B62D5/06 , B62D5/22 , B62D5/083 , B62D5/07 , B62D5/087 , B62D5/12 , B62D5/24 , F16K31/48
CPC分类号： B62D5/22 , B62D5/061 , B62D5/07 , B62D5/083 , B62D5/087 , B62D5/12 , B62D5/24 , F16K31/48
摘要： A first valve accommodation hole is provided in a valve housing. A first valve element, a first valve seat member, a first coil spring, and a first pin are directly accommodated and disposed in the first valve accommodation hole. It is thereby possible to reduce the maximum diameter t1 of the first valve accommodation hole, thus reducing the size of a housing main body.
摘要翻译：第一阀容纳孔设置在阀壳体中。第一阀元件，第一阀座构件，第一螺旋弹簧和第一销直接容纳并设置在第一阀容纳孔中。从而可以减小第一阀容纳孔的最大直径t1，从而减小壳体主体的尺寸。

5. 发明申请

US20090308062A1 Hydraulic Steering System and Method 失效
标题翻译：液压转向系统及方法
公开(公告)号：US20090308062A1
公开(公告)日：2009-12-17
申请号：US12544664
申请日：2009-08-20
申请人： Andreas BOOTZ , Torsten Verkoyen
发明人： Andreas BOOTZ , Torsten Verkoyen
IPC分类号： F15B11/044 , B62D5/087 , F16K47/00
CPC分类号： B62D5/062 , F15B21/008 , Y10T137/778
摘要： A hydraulic steering system has a steering linkage and an actuator actuating the steering linkage. Pressurized hydraulic fluid can be fed to the actuator and removed from the actuator through a return pipe. A device installed into the return pipe counteracts volume flow pulsations by damming up the hydraulic fluid return flow. The device dams up the hydraulic fluid only in the event of an occurrence of a volume flow pulsation.
摘要翻译：液压转向系统具有转向连杆机构和致动转向连杆的致动器。加压液压油可以供给到致动器，并通过回流管从致动器中取出。安装在返回管中的装置通过阻止液压回流而抵消体积流量脉动。只有在发生体积流量脉动的情况下，该装置才能阻止液压油。

6. 发明申请

US20050000750A1 Flow controlling apparatus for power steering 有权
标题翻译：动力转向流量控制装置
公开(公告)号：US20050000750A1
公开(公告)日：2005-01-06
申请号：US10872432
申请日：2004-06-22
申请人： Tsuyoshi Ikeda
发明人： Tsuyoshi Ikeda
IPC分类号： B62D6/00 , B62D5/07 , B62D5/087 , B62D5/09 , B62D101/00 , B62D113/00 , B62D117/00 , B62D5/06
CPC分类号： B62D5/062
摘要： It is one object of the present invention to provide a flow controlling apparatus for a power steering preventing a driver from feeling incompatibility. The flow controlling apparatus for the power steering comprises; a variable throttle mechanism installed in the pump to change fluid of discharged oil from the pump to a hydraulic device; a linear solenoid mechanism controlling the variable throttle mechanism by said predetermined energized current; a spool feeding back the exceeding fluid of said discharged oil to a bypass passage of the pump in accordance with differential pressure between upstream and downstream at the variable throttle mechanism when the exceeding fluid exceeds a predetermined value; and control means controlling the energized current to change transition process in accordance with a steering angular velocity of the steering wheel.
摘要翻译：本发明的一个目的是提供一种用于防止驾驶员感觉不兼容的动力转向器的流量控制装置。用于动力转向的流量控制装置包括：安装在泵中的可变节流机构，以将排出的油的流体从泵改变为液压装置; 线性电磁机构，通过所述预定的通电电流来控制可变节流机构; 当超过流体超过预定值时，阀芯根据可变节流机构的上游和下游之间的压差将所述排出的油的超过流体反馈到泵的旁通通道; 以及控制装置，根据方向盘的转向角速度来控制通电电流以改变转变过程。

7. 发明授权

US5950759A Servo-assisted steering system 失效
标题翻译：伺服辅助转向系统
公开(公告)号：US5950759A
公开(公告)日：1999-09-14
申请号：US564041
申请日：1996-03-12
申请人： Armin Lang , Helmut Knodler
发明人： Armin Lang , Helmut Knodler
IPC分类号： B62D5/087 , B62D5/08 , B62D5/22
CPC分类号： B62D5/08
摘要： In a servo-assisted steering system which is intended for motor vehicles, a steering valve (1) is provided for controlling the pressure fluid. The steering valve (1) has two intake seat valves (7, 8) and two outlet seat valves (10, 11), which are adjustable via an actuating device (23) as a function of a rotary motion of a steering shaft. In the neutral position of the steering valve (1), the outlet seat valves (10, 11) are closed. The intake seat valves (7, 8) can be acted upon in the closing direction by the force of compression springs (13) and are not opened until after the closure of the respective associated outlet seat valve (10, 11). One limiting piston (24) is provided for each side of the steering valve (1). Each limiting piston (24) is acted upon on one side by the pressure prevailing in the work chamber (3, 4) of a servomotor (5) and on the other by a limiting spring (25), which in the neutral position of the steering valve (1) keeps the limiting piston (24) at a distance from the closure body (12) of the intake seat valve (8). If the force of the pressure acting upon the limiting piston (24) exceeds the force of the limiting spring (25), the limiting piston (24) is applied to the closure body (12) of the intake seat valve (8) and acts upon it. With such an arrangement a "cutoff or actuating moment limitation" is attained.
摘要翻译： PCT No.PCT / EP94 / 01931 Sec。 371日期：1996年3月12日 102（e）1996年3月12日PCT PCT 1994年6月14日PCT公布。公开号WO94 / 29158 PCT 日期1994年12月22日在用于机动车辆的伺服辅助转向系统中，设置有用于控制压力流体的转向阀（1）。转向阀（1）具有两个进气座阀（7,8）和两个出气座阀（10,11），它们可通过转向轴的旋转运动经由致动装置（23）而调节。在转向阀（1）的中立位置，出口座阀（10,11）关闭。进气座阀（7,8）可以通过压缩弹簧（13）的作用在关闭方向上，并且在相应的相关联的出气座阀（10,11）关闭之后不被打开。一个限制活塞（24）设置在转向阀（1）的每一侧。每个限制活塞（24）通过在伺服电动机（5）的工作室（3,4）中施加的压力而在另一侧上作用，另一方面由限制弹簧（25）作用，所述限制弹簧在所述中性位置转向阀（1）使限制活塞（24）保持与进气座阀（8）的关闭体（12）一定距离。如果作用在限制活塞（24）上的压力的力超过限制弹簧（25）的力，则限制活塞（24）被施加到进气座阀（8）的关闭体（12）上，之上。通过这种布置，可以获得“截止或致动力矩限制”。

8. 发明授权

US5816359A Control valve for a hydraulic steering system 失效
标题翻译：液压转向系统控制阀
公开(公告)号：US5816359A
公开(公告)日：1998-10-06
申请号：US666731
申请日：1996-06-18
申请人： Angelo Gregorio , Claudio Baldrati
发明人： Angelo Gregorio , Claudio Baldrati
IPC分类号： B62D5/08 , B62D5/087
CPC分类号： B62D5/08
摘要： A control valve is provided for use in a hydraulic steering system of an agricultural vehicle of the type having a steering valve of the reactive type for controlling the supply of hydraulic fluid to hydraulic cylinders having opposed working chambers serving to move the steerable vehicle wheels in opposite directions. The control valve is connectable between the steering valve and the hydraulic cylinders and has a first setting in which fluid flow in both directions between the steering valve and the working chambers of the hydraulic steering cylinders is possible at all times and a second setting in which return flow of hydraulic fluid from any one working chamber of the hydraulic cylinders to the steering valve is only possible when a positive pressure is present at the outlet of the steering valve connected by the control valve to the opposed working chamber of the hydraulic cylinders.
摘要翻译：提供一种用于农用车辆的液压转向系统的控制阀，该液压转向系统具有用于控制将液压油供应到具有相对工作室的液压缸的反作用型转向阀的类型的农用车辆，用于使可转向车轮相对移动方向。控制阀可在转向阀和液压缸之间连接，并且具有第一设置，其中在所有转向阀和液压转向缸的工作室之间的两个方向上的流体流可以在任何时候都可以进行，在第二设定中返回只有当液压缸从液压缸的任何一个工作室到转向阀的液压流体的流动仅在通过控制阀连接到转向阀的出口处的正压力存在于液压缸的相对的工作室时才可能。

9. 发明授权

US5725023A Power steering system and control valve 失效
标题翻译：动力转向系统和控制阀
公开(公告)号：US5725023A
公开(公告)日：1998-03-10
申请号：US391542
申请日：1995-02-21
申请人： Santo Anthony Padula
发明人： Santo Anthony Padula
IPC分类号： B62D5/06 , B62D5/087 , B62D5/09 , F16K27/00 , F16K31/06 , F17D3/00
CPC分类号： F16K31/0613 , B62D5/06 , B62D5/087 , B62D5/09 , F16K27/003 , F16K31/0624 , Y10T137/87217
摘要： A power steering system employs a valve which directly controls the direction of flow of steering fluid and the degree of pressure of the steering fluid. In another aspect of the present invention, a sensor is used to detect steering wheel induced torque. The sensor supplies a signal to an electrical control unit which, in turn, sends a signal to an electromagnetic device controlling a spool within a valve. In a further aspect of the present invention, a non-rotary valve controls steering fluid pressure and flow through left and right turn assist outlets. In still another aspect of the present invention, a valve employs a pair of bores within which spools are linearly movable by electromagnetic devices. In yet another aspect of the present invention, a valve is provided for controlling the magnitude and direction of steering fluid pressure and flow to a steering cylinder; the valve is not mechanically engaged with a rotating member of the steering system.
摘要翻译：动力转向系统采用直接控制转向流体的流动方向和转向液压力的阀。在本发明的另一方面，传感器用于检测方向盘的转矩。传感器向电气控制单元提供信号，该电气控制单元又向控制阀内阀芯的电磁装置发送信号。在本发明的另一方面，非旋转阀控制转向流体压力并流过左右转弯辅助出口。在本发明的另一方面，阀采用一对孔，其中线轴可由电磁装置线性移动。在本发明的另一方面，提供了一种用于控制转向流体压力和转向转向缸的流量的大小和方向的阀; 阀不与转向系统的旋转构件机械接合。

10. 发明授权

US5129424A Fluid controller with integral auxiliary valving 失效
标题翻译：带集成辅助阀的流体控制器
公开(公告)号：US5129424A
公开(公告)日：1992-07-14
申请号：US792514
申请日：1991-11-13
申请人： Dwight B. Stephenson , Kenneth G. Rasmussen , H. P. Schutten
发明人： Dwight B. Stephenson , Kenneth G. Rasmussen , H. P. Schutten
IPC分类号： B62D5/07 , B62D5/083 , B62D5/087 , B62D5/09 , B62D5/097 , B62D6/00
CPC分类号： B62D6/00 , B62D5/097 , Y10T137/86662
摘要： A fluid controller (15) is provided of the type having a primary valve member (53) and a follow-up valve member (55). The controller includes a housing (41) defining main fluid ports (27,29) connected to a steering cylinder (19), and also defines auxiliary fluid ports (31,33), connected to an auxiliary fluid motor (21). The spool and sleeve cooperate with the housing to provide main control valving (35) controlling the flow of fluid to the steering cylinder in response to relative rotation of the spool and sleeve, and auxiliary control valving (35), controlling the flow to the auxiliary motor in response to axial motion of the sleeve, relative to the spool and housing. By performing both the main and auxiliary valving in the spool and sleeve, the main valving (35) is automatically given priority over the auxiliary valving (37), without the need for any expensive, complicated controls or interface between the two types of valving.
摘要翻译：具有主阀构件（53）和后续阀构件（55）的类型的流体控制器（15）。控制器包括限定连接到转向缸（19）的主流体端口（27,29）的壳体（41），并且还限定连接到辅助流体马达（21）的辅助流体端口（31,33）。阀芯和套筒与壳体配合以提供主控制阀（35），其响应于阀芯和套筒的相对旋转以及辅助控制阀（35）控制流向转向缸的流体流动，控制流向辅助马达响应于套筒的轴向运动，相对于线轴和壳体。通过在阀芯和套管中同时执行主阀和辅助阀，主阀（35）自动优先于辅助阀（37），而不需要两种阀门之间任何昂贵，复杂的控制或接口。

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