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1. 发明申请

WO2018206258A1 HYDRAULIC STEERING UNIT 审中-公开
公开(公告)号：WO2018206258A1
公开(公告)日：2018-11-15
申请号：PCT/EP2018/060039
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, said hydraulic steering unit (1) comprising a supply port arrangement having a pressure port (P) connected to a main flow path (3) and a tank port (T) connected to a tank flow path (4), a working port arrangement having a left working port (L) connected to a left working flow path (5) and a right working port (R) connected to a right working flow path (6), a bridge arrangement (14) of variable orifices having a first left orifice (A2L) connected to the main flow path (3) and to the left working flow path (5), a first right orifice (A2R) connected to the main flow path (3) and to the right working flow path (6), a second left orifice (A3L) connected to the left working flow path (5) and to the tank flow path (4), and a second right orifice (A3R) connected to the right working flow path (6) and to the tank flow path (4). Such a hydraulic steering unit should be operated together with a pressure source of fixed displacements. To this end an idle flow path (15) branches off the main flow path (3), wherein a variable idle orifice (An) is arranged in the idle flow path (15), the idle orifice (An) being open in neutral position and closing out of neutral position.

2. 发明申请

WO2013089287A1 휠 타입 건설장비의 조향 시스템 审中-公开
标题翻译：轮式建筑设备转向系统
公开(公告)号：WO2013089287A1
公开(公告)日：2013-06-20
申请号：PCT/KR2011/009567
申请日：2011-12-13
申请人： 볼보 컨스트럭션 이큅먼트 에이비 , 박형석 , 조성용
发明人： 박형석 , 조성용
IPC分类号： B62D5/07 , E02F9/20 , B62D5/06
CPC分类号： B62D5/062 , B62D5/064 , B62D5/093 , B62D6/007 , E02F9/225
摘要： 휠 굴삭기 등이 포장 도로를 따라 주행할 경우 주행 직진성을 확보할 수 있도록 한 조향 시스템을 개시한다. 본 발명에 따른 휠 타입 건설장비의 조향 시스템에 있어서, 유압펌프와, 유압펌프에 연결되는 조향 모터와, 조향 모터의 구동을 제어하는 조향 밸브와, 운전자에 의한 조향 조작에 대응하여 조향 모터 및 조향 밸브를 작동시키는 조향 핸들과, 조향 핸들의 조작에 의해 조향하는 조향 실린더를 구비하는 휠 타입 건설장비의 조향 시스템에 있어서, 작업과 주행이 가능한 작업 모드를 선택시 주행 직진 회복성이 없는 조향 모드로 전환하고, 주행 만이 가능한 주행 전용 모드를 선택시 주행모드 신호 입력에 의해 주행 직진 회복성을 갖는 조향 모드로 전환하는 중립 모드 제어수단을 포함하는 것을 특징으로 하는 휠타입 건설장비의 조향시스템을 제공한다.
摘要翻译：公开了一种转向系统，其能够确保轮式挖掘机在铺设的道路上被驱动时直线行进。轮式施工设备的转向系统包括：液压油泵; 连接到液压油泵的转向马达; 控制转向电动机的操作的转向阀; 根据驾驶员的转向操纵操纵转向马达和转向阀的转向手柄; 以及通过操纵转向手柄转向的转向盘。该转向系统还包括空转模式控制单元，其将工作模式转换成在选择工作和驾驶的工作模式下不具有直线驱动恢复性能的转向模式，并且将排他驾驶模式转换为转向模式当选择仅驱动启动的排他驾驶模式时，通过信号输入具有直线驱动恢复性能。

3. 发明申请

WO2009113917A1 CONTROL SYSTEM AND WORKING MACHINE COMPRISING THE CONTROL SYSTEM 审中-公开
标题翻译：包括控制系统的控制系统和工作机
公开(公告)号：WO2009113917A1
公开(公告)日：2009-09-17
申请号：PCT/SE2008/000189
申请日：2008-03-11
申请人： VOLVO CONSTRUCTION EQUIPMENT AB , WAHLSTRÖM, Patrik , VIGHOLM, Bo
发明人： WAHLSTRÖM, Patrik , VIGHOLM, Bo
IPC分类号： B62D12/00 , B62D1/12 , B62D5/06
CPC分类号： B62D1/22 , B62D5/09 , B62D5/093
摘要： The invention relates to a control system (300) for a working machine (101), comprising a device (301) for changing direction of the working machine, an operator controlled lever (307), and an electronic control unit (351) adapted to receive an input signal indicative of desired direction from the position of the operator controlled element and to generate an output signal for producing a change of direction of the working machine, corresponding to the position of the operator controlled element, via said device (301). The control system (300) comprises an electronic safety device (353) adapted to be controlled by the position of the operator controlled element (307) and adapted to allow control of the device (301) via said output signal and to block control of the device (301) via said output signal, respectively, depending on the position of the operator controlled element.
摘要翻译：本发明涉及一种用于工作机械（101）的控制系统（300），包括用于改变作业机械方向的装置（301），操纵杆控制杆（307）和电子控制单元（351）从所述操作者受控元件的位置接收表示期望方向的输入信号，并经由所述装置（301）生成与所述操作者受控元件的位置对应的所述作业机械的方向变化的输出信号。控制系统（300）包括适于由操作员受控元件（307）的位置控制的电子安全装置（353），并且适于允许经由所述输出信号控制装置（301）并阻止装置（301）分别经由所述输出信号，取决于操作者受控元件的位置。

4. 发明申请

WO1992011155A1 LOAD SENSING HYDROSTATIC STEERING SYSTEM 审中-公开
标题翻译：负载感应水力转向系统
公开(公告)号：WO1992011155A1
公开(公告)日：1992-07-09
申请号：PCT/US1991001117
申请日：1991-02-25
申请人： CATERPILLAR INC.
发明人： CATERPILLAR INC. , HALL, Lowell, R.
IPC分类号： B62D12/00
CPC分类号： B62D5/061 , B62D5/093 , B62D12/00
摘要： Neutralizer valves are useful in hydraulic steering systems to hydraulically stop the steering motion. However the known neutralizer valve arrangements will not work in load sensing hydrostatic steering systems. The subject load sensing hydrostatic steering system (17) has a limit valve (42, 43) disposed in a load pressure signal line (41) to normally communicate a load pressure signal from a steering valve (23) to a displacement controller (21) of a load sensing variable displacement pump (18) so that the displacement of the pump is regulated to meet the demand for pressurized fluid by the steering valve (23). When a pair of vehicle members (11, 12) reach a preselected position during a steering maneuver, the limit valve (42, 43) is moved to a position interrupting communication of the load pressure signal to the displacement controller causing the pump to destroke to its minimum output thereby stopping the flow of pressurized fluid to the steering valve (23) and to a pair of steering cylinders (14, 16). The limit valve (42, 43) remains in the actuated position only momentarily and then moves back to the communicating position to permit steering of the vehicle in the opposite direction substantially immediately after the vehicle members reach the predetermined position.

5. 发明申请

WO2018206261A1 HYDRAULIC STEERING UNIT 审中-公开
公开(公告)号：WO2018206261A1
公开(公告)日：2018-11-15
申请号：PCT/EP2018/060042
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 , B62D5/065
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 (6) and a tank port (T) connected to a tank flow path (7), a working port arrangement having a left working port (L) connected to a left working flow path (9) and a right working port (R) connected to a right working flow path (10), a bridge arrangement (14) of variable orifices having a first left orifice (A2L) connected to the main flow path (6) and to the left working flow path (9), a first right orifice (A2R) connected to the main flow path (6) and to the right working flow path (10), a second left orifice (A3L) connected to the left working flow path (9) and to the tank flow path (7), and a second right orifice (A3R) connected to the right working flow path (10) and to the tank flow path (7). Such a hydraulic steering unit should allow comfortable steering. To this end a measuring motor arrangement is arranged in one of the left working flow path (9) and the right working flow path (10), the measuring motor arrangement (15) having a first measuring motor (1 6) and a second measuring motor (17).

6. 发明申请

WO2015134706A1 LOAD-REACTION SWITCHING VALVE ASSEMBLY 审中-公开
标题翻译：负载开关阀组件
公开(公告)号：WO2015134706A1
公开(公告)日：2015-09-11
申请号：PCT/US2015/018879
申请日：2015-03-05
申请人： EATON CORPORATION
发明人： KRAHN, Aaron, Kelly
IPC分类号： B62D5/06 , B62D5/08
CPC分类号： B62D5/093 , B62D1/22 , B62D5/04 , B62D5/062
摘要： A steering system for a vehicle includes a fluid pump, an actuator in selective fluid communication with the fluid pump, a hydrostatic steering system and an electro-hydraulic steering system. The hydrostatic steering system includes a fluid controller having a first proportional valve in fluid communication with the fluid pump and a fluid meter in fluid communication with the first proportional valve and the actuator. The electro-hydraulic steering system includes a second proportional valve in selective fluid communication with the fluid pump and the actuator. The second proportional valve is disposed in parallel to the first proportional valve. The electro-hydraulic steering circuit further includes a load-reaction switching valve assembly disposed in series with the first proportional valve of the hydrostatic steering system. The load-reaction switching valve allows fluid communication between the actuator and the fluid controller when the first proportional valve is in a neutral position.
摘要翻译：用于车辆的转向系统包括流体泵，与流体泵选择性流体连通的致动器，静液压转向系统和电动液压转向系统。静液压转向系统包括具有与流体泵流体连通的第一比例阀和与第一比例阀和致动器流体连通的流量计的流体控制器。电动液压转向系统包括与流体泵和致动器选择性流体连通的第二比例阀。第二比例阀与第一比例阀平行设置。电动液压转向回路还包括与静液压转向系统的第一比例阀串联布置的负载反应切换阀组件。当第一比例阀处于中立位置时，负载反应切换阀允许致动器和流体控制器之间的流体连通。

7. 发明申请

WO2013165737A2 STEERING CIRCUIT WITH BYPASS VALVE 审中-公开
标题翻译：带旁路阀的转向回路
公开(公告)号：WO2013165737A2
公开(公告)日：2013-11-07
申请号：PCT/US2013/037688
申请日：2013-04-23
申请人： EATON CORPORATION
发明人： DURGE, Akshay, Avinash
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：转向回路包括流体泵，该流体泵具有与贮存器和出口连通的入口。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。转向单元包括阀组件，该阀组件具有打开中心的中立位置，该中间位置提供流体入口和流体出口之间的流体连通以及流量计。当流体压力超过阈值时，压力释放阀提供流体泵的出口与储存器之间的流体连通。旁通阀在流体泵的出口与储液器之间提供选择性的流体连通。旁通阀与压力释放阀平行设置。

8. 发明申请

WO2009059746A3 VEHICLE STEERING SYSTEM 审中-公开
标题翻译：车辆转向系统
公开(公告)号：WO2009059746A3
公开(公告)日：2009-07-09
申请号：PCT/EP2008009303
申请日：2008-11-05
申请人： SKF AB , SCHMIDT KLEMENS , HERTH UDO
发明人： SCHMIDT KLEMENS , HERTH UDO
IPC分类号： B62D5/30 , B62D5/09
CPC分类号： B62D5/091 , B62D5/093 , B62D5/30 , B62D5/32
摘要： The invention relates to a vehicle steering system comprising a hydraulic actuator (13) for generating a steering movement, a rotary hydraulic valve (4) for hydraulically controlling the hydraulic actuator (13), a first electric drive unit (7) for actuating the hydraulic valve (4), and a first coupling element (8) for transmitting torque from the first electric drive unit (7) to the hydraulic valve (4) and preventing torque from being transmitted from the hydraulic valve (4) to the first electric drive unit (7).
摘要翻译：本发明涉及一种车辆转向系统具有用于对液压致动器（13），第一电驱动装置（7），用于致动液压阀（4）和液压致动产生的转向运动，旋转液压阀（4）的液压致动器（13）用于从所述第一电驱动装置（7），用于将液压阀（4）的扭矩传递的第一联接元件（8）和从Hydraxlikventil扭矩防止变速器（4）向所述第一电驱动装置（7）。

9. 发明申请

WO2008069552A1 STEERING CONTROL SYSTEM FOR CONSTRUCTION EQUIPMENT 审中-公开
标题翻译：建筑设备转向控制系统
公开(公告)号：WO2008069552A1
公开(公告)日：2008-06-12
申请号：PCT/KR2007/006255
申请日：2007-12-04
申请人： DOOSAN INFRACORE CO., LTD. , JANG, In-Pyo , LEE, Soung-Kyun
发明人： JANG, In-Pyo , LEE, Soung-Kyun
IPC分类号： B62D6/00
CPC分类号： B62D5/097 , B62D5/093 , B62D6/02
摘要： Disclosed is a steering control system for construction equipment, which controls the rotating speed of a steering wheel of the construction equipment. When the construction equipment is driven at a low speed, the steering control system substantially prevents a difference between a rotating speed of the steering wheel manipulated by a driver and a real steering speed of the construction equipment such as a wheel loader. Thereby, the accidents caused by the difference between the rotating speed of the steering wheel manipulated by the driver and the real steering speed of the construction equipment can be prevented.
摘要翻译：公开了一种用于施工设备的转向控制系统，其控制施工设备的方向盘的转速。当施工设备以低速驱动时，转向控制系统基本上防止了由驾驶员操纵的方向盘的转速与诸如轮式装载机之类的施工设备的实际转向速度之间的差异。因此，可以防止由驾驶员操纵的方向盘的转速与施工设备的实际转向速度之间的差异引起的事故。

10. 发明申请

WO1988010206A1 HYDROSTATIC STEERING DEVICE 审中-公开
标题翻译：液压转向装置
公开(公告)号：WO1988010206A1
公开(公告)日：1988-12-29
申请号：PCT/EP1988000544
申请日：1988-06-21
申请人： ZAHNRADFABRIK FRIEDRICHSHAFEN AG , TISCHER, Werner
发明人： ZAHNRADFABRIK FRIEDRICHSHAFEN AG
IPC分类号： B62D05/093
CPC分类号： F15B11/16 , B62D5/07 , B62D5/093 , F15B2211/20553 , F15B2211/25 , F15B2211/30505 , F15B2211/30585 , F15B2211/321 , F15B2211/325 , F15B2211/4053 , F15B2211/428 , F15B2211/50554 , F15B2211/50572 , F15B2211/528 , F15B2211/7053 , F15B2211/7058 , F15B2211/71
摘要： A hydrostatic steering device has a pump (2) connected to a tank (1), a steering valve (4) provided with a metering pump (6) and operated by a steering handwheel (7), and a steering cylinder (13). The steering has a variable working flow and a constant pilot flow. The pilot flow flows through a constant orifice (6) and the pressure drop across the constant orifice serves as a control signal for the flow rate in a pressure line (3). The metering pump is coupled mechanically with an adjustable orifice (15) through which the pilot flow passes. A pressure compensator (16) located between the constant orifice (6) and the adjustable orifice (15) is controlled by the differential pressure of the adjustable orifice. The load signal passes through a control line (18) which branches off between the constant orifice (6) and the pressure compensator (16) and travels to the pump (2) or, in a constant pump connected to a flow-dividing valve (21), to the flow-dividing valve.

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