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11. 发明申请

WO2018206259A1 HYDRAULIC STEERING UNIT 审中-公开
公开(公告)号：WO2018206259A1
公开(公告)日：2018-11-15
申请号：PCT/EP2018/060040
申请日：2018-04-19
申请人： DANFOSS POWER SOLUTIONS APS
发明人： OLESEN, Casper Mikael , FREDERIKSEN, Mogens , ARBJERG, Niels , BATES, Charles Anthony , ENNEMARK, Poul
IPC分类号： B62D5/093
CPC分类号： B62D5/065 , B62D5/08 , B62D5/083 , B62D5/093 , B62D5/14
摘要： A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (P) connected to a main flow path (5) and a tank port (T) connected to a tank flow path (6), a working port arrangement having a left working port (L) connected to a left working flow path (7) and a right working port (R) connected to a right working flow path (8), a bridge arrangement (14) of variable neutral open orifices, said bridge arrangement (14) comprising a first left orifice (A2L) connected to a main flow path (5) and to the left working flow path (7), a first right orifice (A2R) connected to a main flow path (5) and to the right working flow path (8), a second left orifice (A3L) connected to the left working flow path (7) and to the tank flow path (6), and a second right orifice (A3R) connected to the right working flow path (8) and to the tank flow path (6). Such a steering unit has a good steering behavior but can function as a closed-center solution. To this end a further variable orifice arrangement is arranged between the supply port (P) arrangement and the working port arrangement (T), which further orifice arrangement is closed in neutral position.

12. 发明申请

WO2018206254A1 HYDRAULIC STEERING UNIT 审中-公开
公开(公告)号：WO2018206254A1
公开(公告)日：2018-11-15
申请号：PCT/EP2018/060035
申请日：2018-04-19
申请人： DANFOSS POWER SOLUTIONS APS
发明人： OLESEN, Casper Mikael , FREDERIKSEN, Mogens , ARBJERG, Niels , BATES, Charles Anthony , ENNEMARK, Poul
IPC分类号： B62D5/093
CPC分类号： B62D5/065 , B62D5/08 , B62D5/093 , B62D5/14
摘要： A hydraulic steering unit (1) is described comprising a supply port arrangement having a pressure port (8) connected to a main flow path (2) and a tank port (5) connected to a tank flow path (3), a working port arrangement having a left working port (L) connected to a left working flow path (4) and a right working port (R) connected to a right working flow path (5), a variable first left orifice (A2L) connected to the main flow path (2) and to the left working flow path (4), a variable first right orifice (A2R) connected to the main flow path (2) and to the right working flow path (5), a variable second left orifice (A3L) connected to the left working flow path (4) and to the tank flow path (3), and a variable second right orifice (A3R) connected to the right working flow path (5) and to the tank flow path (3). Such a steering unit should allow comfortable steering. To this end a measuring motor (15) is arranged in one of the working flow parts (4, 5).

13. 发明申请

WO2007012399A1 ELEKTROHYDRAULISCHE LENKUNG 审中-公开
标题翻译：电动液压操舵
公开(公告)号：WO2007012399A1
公开(公告)日：2007-02-01
申请号：PCT/EP2006/006794
申请日：2006-07-12
申请人： BOSCH REXROTH AG , BIENER, Rainer
发明人： BIENER, Rainer
IPC分类号： B62D5/06 , B62D5/093
CPC分类号： B62D5/093
摘要： Offenbart ist eine elektrohydraulische Lenkung mit einem über ein Bedienelement (2) ansteuerbaren Lenkaggregat (4) zur Versorgung eines Lenkmotors (6) mit Druckmittel. In Abhängigkeit von der Betätigung des Bedienelementes (2) oder in Abhängigkeit von einem externen Signal kann der Lenkmotor (6) über ein Lenkventil (28) mit einer Zusatzdruckmittelmenge versorgt werden. Erfindungsgemäß ist im Zusatzdruckmittelströmungspf ad ein Sperrventil (29) angeordnet, das in eine Sperrstellung bringbar ist, um den Zusatzdruckmit- telströmungspf ad zum Lenkmotor zu sperren.
摘要翻译：公开的是由（6）的压力介质供给转向马达的控制元件（2）可控的转向单元（4）具有的电动液压转向系统。响应于所述操作件（2）或在响应的操作，以所述转向马达（6）（28）的外部信号可以与经由转向阀的附加的压力介质的数量来提供。止回阀（29）根据本发明在Zusatzdruckmittelströmungspf广告，其可被带入锁定位置到Zusatzdruckmittelströmungspf广告锁定到转向马达布置。

14. 发明申请

WO2004043768A1 HYDRAULISCHE LENKEINRICHTUNG MIT STROMVERSTÄRKUNG 审中-公开
标题翻译：具有功率提高了液压转向装置
公开(公告)号：WO2004043768A1
公开(公告)日：2004-05-27
申请号：PCT/DE2003/003649
申请日：2003-11-04
申请人： BOSCH REXROTH AG
发明人： BERGMANN, Erhard , SCHILDMANN, Manfred , VOSS, Gerhard
IPC分类号： B62D5/093
CPC分类号： B62D5/093
摘要： Bekannte Lenkeinrichtungen haben den Nachteil, dass sich beim Aus- und Einlenken mit unterschiedlichen Geschwindigkeiten um den gleichen Lenkradwinkel unterschiedliche Radstellungen ergeben. Das beeinflusst das Lenkungsverhalten negativ. Es wird daher eine gattungsgemässe Lenkeinrichtung vorgeschlagen, die eine die Dosierpumpe (7) umgehende Nebenleitung (20) mit einem Stromregelventil (23) besitzt. Dabei befindet sich die Messdrossel für das Stromregelventil (23) in der Hauptleitung (8). Erfindungsgemäss ist die Messdrossel als ein federbelastetes, in Richtung des Lenkzylinders (2) öffnendes Sperrventil mit einer Drossel (11) ausgeführt und die Kräfte der Feder des federbelasteten Sperrventils (11) und der Regelfeder (29) des Stromregelventils (23) sind in zweckmässiger Weise aufeinander abgestimmt.
摘要翻译：已知的转向装置具有去除并且由相同的方向盘角度不同的车轮的位置在不同的速度转动时出现的缺点。从而影响转向性能产生负面影响。因此，提出了一种通用的转向装置，其包括一个计量泵（7）的快速次级管线（20）配有一个流量控制阀（23）。这里，所述流动控制阀的计量节流孔（23）位于所述主线路（8）。根据本发明的测量节气门开度为弹簧加载转向缸（2）单向阀与扼流圈（11）被执行的方向和弹簧加载的截止阀（11）和调节弹簧（29）的流量控制阀（23）的弹簧的力以适当的方式，协调。

15. 发明申请

WO1995016599A1 DEVICE FOR CONTROLLING THE PRESSURE TO BE SUPPLIED TO A HYDROSTATIC STEERING UNIT 审中-公开
标题翻译：用于控制提供给静止转向单元的压力的装置
公开(公告)号：WO1995016599A1
公开(公告)日：1995-06-22
申请号：PCT/DK1994000466
申请日：1994-12-14
申请人： DANFOSS A/S , ARBJERG, Niels
发明人： DANFOSS A/S
IPC分类号： B62D05/083
CPC分类号： B62D5/083 , B62D5/093
摘要： In a device for controlling the pressure to be supplied to a hydrostatic steering unit (1) by means of a control signal (s), thereis a rotary slide valve arrangement, one slide valve element of which is rotatable by means of a steering means (5) and the other slide valve element of which is corrected by means of a measuring motor (16). Together with a series throttle (AV), a control throttle (AS) forms a series circuit independent of the intake path of the steering motor (4), which circuit is connected between a pressure source (CF) and the tank (6). The control throttle (AS) has a closing characteristic that extends substantially across the entire working range of the angle of rotation of the slide valve elements. The control signal (s) is tapped between the series throttle (AV) and the control throttle (AS). This provides a pressure control that is independent of load.
摘要翻译：在用于通过控制信号控制供给到静液压转向装置（1）的压力的装置中，具有旋转滑阀装置，其一个滑阀元件可借助于转向装置（ 5），另一个滑阀元件借助于测量马达（16）进行校正。与节流阀（AV）一起，控制油门（AS）形成独立于转向电动机（4）的进气路径的串联回路，该回路连接在压力源（CF）和油箱（6）之间。控制节流阀（AS）具有基本上在滑阀元件的旋转角度的整个工作范围内延伸的闭合特性。控制信号在序列节气门（AV）和控制节流阀（AS）之间分接。这提供了独立于负载的压力控制。

16. 发明申请

WO1993003946A1 FLOW AMPLIFIER 审中-公开
标题翻译：流量放大器
公开(公告)号：WO1993003946A1
公开(公告)日：1993-03-04
申请号：PCT/DK1992000216
申请日：1992-07-06
申请人： DANFOSS A/S , THOMSEN, Svend, Erik
发明人： DANFOSS A/S
IPC分类号： B62D05/09
CPC分类号： B62D5/093 , Y10T137/2562
摘要： A flow amplifier (1) with an inlet (4) and an outlet (5) is provided, between which a first branch (6), through which a flow of a fluid to be amplified is flowing, with a first throttling device (8), the throttle resistance of which is adjusted in dependence on the pressure across and by the flow rate through the first throttling device, and a second branch (7) with a second throttling device (11), the throttle resistance of which is adjusted in dependence on the throttle resistance of the first throttling device. In a flow amplifier of that kind, the amplification factor is intended to be made independently of pressure losses in the generation of the flow to be amplified. For that purpose, at least one pressure-divider (14, 15; 17, 18) with a central take-off point (16; 19) is provided, which is supplied by a pressure difference between inlet (4) and outlet (5), the pressure at the central take-off point (15, 19) controlling the flow rate through the second throttling device (11).

17. 发明申请

WO1992006880A1 HYDROSTATIC STEERING DEVICE WITH HYDRAULIC POWER ASSISTANCE FOR MOTOR VEHICLES 审中-公开
标题翻译：具有电动机液压动力辅助的液压转向装置
公开(公告)号：WO1992006880A1
公开(公告)日：1992-04-30
申请号：PCT/EP1991001926
申请日：1991-10-10
申请人： ZAHNRADFABRIK FRIEDRICHSHAFEN AG
发明人： ZAHNRADFABRIK FRIEDRICHSHAFEN AG , TISCHER, Werner
IPC分类号： B62D05/32
CPC分类号： B62D5/32 , B62D5/093
摘要： A hydrostatic steering device with hydraulic power assistance for motor vehicles the maximum speed of which is not governed has two steering circuits (1, 2). Each of them contains a servo pump (7, 17), each of which directs pressure medium from a pressure medium container (8, 18) via a control valve (5, 21) to a servo motor (15, 26). The first steering circuit (1) has a control device (3) actuatable via a steering wheel (6) which contains a control pump (4) and one of the control valves (5). The second steering circuit (2) is controllable dependently upon the first (1) in such a way that the control valve (21) of the second steering circuit (2) is controlled by an electronic unit (28) dependently upon at least one characteristic of the first steering circuit (1). The characteristic is advantageously a steering travel signal from the steering wheel (6) generated by a steering travel sensor (30).

18. 发明申请

WO1988009280A1 HYDRAULIC STEERING APPARATUS 审中-公开
标题翻译：液压转向装置
公开(公告)号：WO1988009280A1
公开(公告)日：1988-12-01
申请号：PCT/JP1988000509
申请日：1988-05-26
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , SUKETOMO, Toshitaka , IKARI, Masanori
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： B62D05/06
CPC分类号： B62D5/093
摘要： A hydraulic steering apparatus for a construction vehicle, which has been developed for the purpose of improving the steering control performance of an apparatus of this kind by preventing the occurrence of non-synchronousness between a steering wheel and a knuckle arm or some other pivotable member, and eliminating a dead zone ascribed to an operation of a link mechanism. This steering apparatus has a pilot valve (2) connected directly to a steering wheel, a main control valve (7) provided separately from the pilot valve and adapted to be operated by a pressure oil sent from a pilot pump (9) which is controlled by the pilot valve, a steering cylinder (6) to which a pressure oil is supplied from a main pump (8) via the main control valve, and a feedback link (4) connected between a pivotable member (5), such as a knuckle arm connected pivotably to a piston rod in the steering cylinder and a spool in the pilot valve.

19. 发明申请

WO2013165737A3 STEERING CIRCUIT WITH BYPASS VALVE 审中-公开
标题翻译：带旁路阀的转向电路
公开(公告)号：WO2013165737A3
公开(公告)日：2013-12-19
申请号：PCT/US2013037688
申请日：2013-04-23
申请人： EATON CORP
发明人： DURGE AKSHAY AVINASH
IPC分类号： B62D5/06
CPC分类号： B62D5/061 , B62D5/093
摘要： A steering circuit includes a fluid pump having an inlet in communication with a reservoir and an outlet. An actuator is in selective communication with the fluid pump. A steering unit defines a fluid inlet port in fluid communication with the fluid pump, a fluid outlet port in fluid communication with the fluid pump, and first and second control ports in fluid communication with the actuator. The steering unit includes a valve assembly having an open-center neutral position that provides fluid communication between the fluid inlet port and the fluid outlet port and a fluid meter. A pressure relieving valve provides fluid communication between the outlet of the fluid pump and the reservoir when fluid pressure exceeds a threshold value. A bypass valve provides selective fluid communication between the outlet of the fluid pump and the reservoir. The bypass valve is disposed in parallel to the pressure relieving valve.
摘要翻译：转向回路包括具有与贮存器连通的入口和出口的流体泵。致动器与流体泵选择性连通。转向单元限定与流体泵流体连通的流体入口端口，与流体泵流体连通的流体出口端口以及与致动器流体连通的第一和第二控制端口。转向单元包括具有开放中心位置的阀组件，其提供流体入口和流体出口端口之间的流体连通以及流体计量器。当流体压力超过阈值时，减压阀在流体泵的出口和储存器之间提供流体连通。旁路阀在流体泵的出口和储存器之间提供选择性的流体连通。旁通阀与排气阀平行设置。

20. 发明申请

WO2013097927A1 HYDRAULIC STEERING DEVICE 审中-公开
标题翻译：液压转向装置
公开(公告)号：WO2013097927A1
公开(公告)日：2013-07-04
申请号：PCT/EP2012/005121
申请日：2012-12-10
申请人： SAUER-DANFOSS APS
发明人： ENNEMARK, Poul , PEISTRUP, Peter, Gade , RUDOLPH, Tom
IPC分类号： B62D5/093 , B62D5/32
CPC分类号： B62D5/093 , B62D5/065 , B62D5/32
摘要： A hydraulic steering device (1) is described comprising a supply port arrangement having a supply port (P) and a tank port (T), a working port arrangement having two working ports (L, R), a main flow path (14) between the supply port (P) and the working port arrangement, a return flow path (16) between the working port arrangement and the tank port (T), flow meter means (15) being arranged in said main flow path (14), said flow meter means (15) comprising at least two flow meters (27, 28) and a flow meter valve means (30), said flow meter valve means (30) in a first operation mode connecting at least two flow meters (27, 28) in parallel and in a second operation mode making inactive at least one flow meter (27). Such a steering device should be operated comfortable for a driver. To this end an amplification flow path (17) is arranged in parallel to said main flow path (14), said amplification flow path (17) being connected to said main flow path (14) downstream said flow meter means (15) in a direction from said supply port (P) to said working port arrangement.
摘要翻译：液压转向装置（1）被描述为包括具有供给口（P）和罐口（T）的供给口装置，具有两个工作端口（L，R）的工作端口装置，主流路（14）在所述供给口（P）和所述工作端口装置之间，在所述主流路（14）之间设置有在所述工作端口装置与所述箱口（T）之间的回流路径（16），所述流量计装置（15）所述流量计装置（15）包括至少两个流量计（27,28）和流量计阀装置（30），所述流量计阀装置（30）处于第一操作模式，连接至少两个流量计（27， 28）并且在第二操作模式中使得不活动的至少一个流量计（27）。这样的转向装置应该对于驾驶者来说是舒适的。为此，放大流路（17）与所述主流路（14）平行布置，所述放大流路（17）在所述流量计装置（15）的下游与所述主流路（14）连接，方向从所述供应口（P）到所述工作端口装置。

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