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公开(公告)号：US20210347407A1
公开(公告)日：2021-11-11
申请号：US17253706
申请日：2019-09-30
摘要： This power steering valve (1) includes a sleeve (40), a spool (60) held in such a way as to be able to rotate within the housing (40), to which an input shaft U of a steering wheel S is coupled, a gerotor (30) fixed to the sleeve (10) and configured to be driven by hydraulic fluid which flows out from the predetermined opening of the sleeve (40), and a drive shaft (80) meshing with an inner rotor (32) of the gerotor (30) and pivotally supported in a swingable manner by the sleeve (40) with use of a pin (81), wherein an overall length Ld of the drive shaft (80) is formed to have a dimension defined by (¼)·Ls≤Ld≤(½)·Ls relative to an overall length Ls of the sleeve (40), and the pin (81) is arranged at a position nearer the gerotor (30) in an axial direction than a middle position in the sleeve (40).
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公开(公告)号：US07798280B2
公开(公告)日：2010-09-21
申请号：US12245338
申请日：2008-10-03
申请人： Marco Simoni , Sergio Magrini
发明人： Marco Simoni , Sergio Magrini
IPC分类号： B62D5/097
摘要： A steering system for an agricultural vehicle with a hydraulic steering motor incorporates an internal pump, a distribution valve, an input shaft which in use is coupled for rotation by the steering shaft of a vehicle steering wheel, and connectors for hydraulic lines leading to a high pressure source of oil, to an oil reservoir and to hydraulic actuators connected to the steerable wheels of the vehicle. The steering motor is located remotely from the steering shaft and is coupled for rotation with shaft by hydraulic rotary actuators mounted on the steering shaft and the input shaft of the steering motor and arranged in a closed circuit with one another.
摘要翻译： 具有液压转向马达的农用车辆的转向系统包括内部泵，分配阀，在使用中的输入轴，其被联接以由车辆方向盘的转向轴旋转，以及用于通向高度的液压管路的连接器 油的压力源，油箱和连接到车辆的可转向轮的液压致动器。 转向马达远离转向轴定位，并通过安装在转向轴和转向马达的输入轴上的液压旋转执行机构与轴一起旋转，彼此相互闭合。
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3.发明授权
公开(公告)号：US5638864A
公开(公告)日：1997-06-17
申请号：US561905
申请日：1995-11-22
CPC分类号： B62D5/097 , Y10T137/86662
摘要： A fluid controller (15) for use with an unequal area cylinder (25) having a rod end area A and a head end area B. The controller valving (27) includes, in one embodiment, a flow amplification path (101) for only one direction of steering. In another embodiment, the controller valving (27) includes flow amplification in both directions of steering, but with the ratios being different. In either case, the ratio of flow to the head end to flow to the rod end equals the ratio B/A, whereby the fluid controller requires the same number of turns, lock-to-lock, for either direction of steering.
摘要翻译： 一种与具有杆端区域A和头端区域B的不等面积圆筒（25）一起使用的流体控制器（15）。在一个实施例中，控制器阀（27）包括仅用于流动放大路径（101） 一个方向转向 在另一个实施例中，控制器阀（27）包括在转向的两个方向上的流量放大，但是比率是不同的。 在任一种情况下，流向杆端的流量与杆端流量的比值等于B / A比，由此流体控制器对于任一方向都需要相同数量的匝数锁定。
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公开(公告)号：US5634495A
公开(公告)日：1997-06-03
申请号：US591248
申请日：1996-01-18
CPC分类号： B62D5/097 , Y10T137/86662
摘要： A fluid controller (17) having a housing (21) and valving including a spool (41) and a follow-up sleeve (43). The spool and sleeve define a central reference plane (RP) with the housing having two annular chambers (61, 62) receiving pressurized fluid from an inlet port (23). One of the annular chambers (61) communicates pressurized fluid to the main flow control orifice (A1) in a left turn, and to the flow amplification orifice (AQ) in a right turn, while the other annular chamber (62) communicates pressurized fluid to the main flow control orifice (A1) in a right turn, and to the flow amplification orifice (AQ) in a left turn. A check valve (103,105) is associated with each of the annular chambers, such that one check valve (103) is an inlet check in a right turn and a reverse flow prevention check while manually steering in a left turn, whereas the other check valve (105) is an inlet check in a left turn and a reverse flow prevention check while manually steering in a right turn. The disclosed arrangement makes it possible to combine wide angle steering architecture with flow amplification capability, without the need to close off the amplification orifice (AQ) during manual steering.
摘要翻译： 一种流体控制器（17），其具有壳体（21）和阀，所述阀包括阀芯（41）和随动套筒（43）。 阀芯和套管限定了中心参考平面（RP），其中壳体具有从入口（23）接收加压流体的两个环形腔（61,62）。 一个环形室（61）将加压流体以左转弯将流体加压到主流量控制孔（A1），并且右旋转将流量扩张孔（AQ）连通，而另一个环形室（62）将加压流体 以右转的方式连接到主流量控制孔（A1），并且向左转动到流量调节孔（AQ）。 单向阀（103,105）与每个环形室相关联，使得一个止回阀（103）是右转的入口检查和在左转中手动转向的反向流动防止检查，而另一止回阀 （105）是在右转中手动转向时的左转入口检查和逆流防止检查。 所公开的布置使得可以将广角转向架构与流量放大能力相结合，而不需要在手动转向期间关闭放大孔（AQ）。
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公开(公告)号：US5404722A
公开(公告)日：1995-04-11
申请号：US181689
申请日：1994-01-14
申请人： Makoto Nagao , Dwight B. Stephenson
发明人： Makoto Nagao , Dwight B. Stephenson
CPC分类号： B62D5/097
摘要： A torque generator steering device (10) is disclosed of the type including a gerotor displacement mechanism (19) and valving (9), by the rotation of an input shaft (1) results in a hydrostatic power assist to an output shaft (2). In parallel with the power assist path, the input shaft (1) is connected by a torsion bar (15) to a connecting shaft (3) which, in turn, is connected to the output shaft (2). The connections between the torsion bar (15) and the connecting shaft (3), and between the connecting shaft (3) and the output shaft (2) are substantially zero backlash mechanical connections, thus providing a main torque transmitting path in parallel with the power assist path. Below a predetermined level of input torque, rotation of the input shaft (1) results in an immediate and corresponding rotation of the output shaft (2), thus providing a manual steering mode.
摘要翻译： 通过输入轴（1）的旋转，公开了包括摆轮运动机构（19）和阀（9）的类型的扭矩发生器转向装置（10），从而对输出轴（2）进行静液力助力， 。 与动力辅助路径平行地，输入轴（1）通过扭杆（15）连接到连接轴（3），连接轴（3）又连接到输出轴（2）。 扭杆（15）和连接轴（3）之间以及连接轴（3）和输出轴（2）之间的连接基本上为零间隙机械连接，从而提供主扭矩传递路径与 动力辅助路径。 低于预定水平的输入扭矩，输入轴（1）的旋转导致输出轴（2）的立即和相应的旋转，从而提供手动转向模式。
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公开(公告)号：US5303636A
公开(公告)日：1994-04-19
申请号：US850712
申请日：1992-03-13
摘要： An improved fluid controller (15) is provided having both rotary valving (47) actuated by the steering wheel (17), and axial valving (49) controlled by an electro-hydraulic valve (113) in response to a correction signal (31). In one embodiment, both the rotary valving and the axial valving are achieved by a primary valve member (63) and a follow-up valve member (65), and both the rotary and axial valving can be actuated simultaneously. Also disclosed is a logic control system for closed-loop control of the electro-hydraulic valve, whereby performance problems such as self-steering, wander, drift, and others are substantially eliminated.
摘要翻译： 提供改进的流体控制器（15），其具有响应于校正信号（31）而由方向盘（17）致动的旋转阀（47）和由电动液压阀（113）控制的轴向阀（49） 。 在一个实施例中，旋转阀门和轴向阀门都通过主阀构件（63）和跟随阀构件（65）实现，并且旋转阀和轴向阀都可以同时致动。 还公开了一种用于电动液压阀的闭环控制的逻辑控制系统，由此基本上消除了诸如自转向，漂流，漂移等性能问题。
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公开(公告)号：US5129424A
公开(公告)日：1992-07-14
申请号：US792514
申请日：1991-11-13
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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公开(公告)号：US5101860A
公开(公告)日：1992-04-07
申请号：US767725
申请日：1991-09-30
申请人： Dwight B. Stephenson
发明人： Dwight B. Stephenson
CPC分类号： B62D5/097 , Y10T137/86662
摘要： A fluid controller (15) is disclosed of the type including a primary, spool valve (41) and a rotatable follow-up valve member (43). The controller includes a housing (23) defining an inlet port (31), a return port (33), and control fluid ports (35 and 37). The return port is in communication with an interior chamber (33c) disposed within the spool valve (41). The controller is of the type including a fluid meter (21) through which the fluid flows as part of the main fluid path, imparting the follow-up movement to the follow-up valve member (43). Anti-cavitation check valves (95L, 95R) are disposed in the spool valve, and permit direct communication from the interior chamber of the spool into the main fluid path when the valving returns to neutral (FIGS. 3 and 5) after cavitation occurs. In addition, manual steering check valves (97L, 97R) are disposed in the spool valve, and are operable to communicate fluid from the interior chamber to the inlet side of the fluid meter when the valving is at maximum displacement, in a manual steering operation (FIGS. 4 and 6).
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公开(公告)号：US4858714A
公开(公告)日：1989-08-22
申请号：US170675
申请日：1988-03-17
申请人： Hollis N. White, Jr.
发明人： Hollis N. White, Jr.
摘要： An improved hydrostatic steering mechanism is disclosed having a rotary valve with a radially displaced resilient feedback mechanism.
摘要翻译： 公开了一种改进的静液压转向机构，其具有带径向移位的弹性反馈机构的旋转阀。
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公开(公告)号：US4818200A
公开(公告)日：1989-04-04
申请号：US142301
申请日：1987-12-28
申请人： Hollis N. White, Jr.
发明人： Hollis N. White, Jr.
CPC分类号： B62D5/097 , Y10T137/86638 , Y10T137/86654 , Y10T137/86662
摘要： An improved hydrostatic steering mechanism is disclosed having a rotary valve with a radially displaced resilient feedback mechanism.
摘要翻译： 公开了一种改进的静液压转向机构，其具有带径向移位的弹性反馈机构的旋转阀。
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