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1. 发明授权

US07114591B2 Steering system for working truck 失效
标题翻译：工作车转向系统
公开(公告)号：US07114591B2
公开(公告)日：2006-10-03
申请号：US10500656
申请日：2003-02-26
申请人： Tsukasa Toyooka , Makoto Sugaya , Makoto Matsushita , Kensuke Satou , Yuuji Nagashima
发明人： Tsukasa Toyooka , Makoto Sugaya , Makoto Matsushita , Kensuke Satou , Yuuji Nagashima
IPC分类号： B62D5/06
CPC分类号： B62D7/1572 , B62D7/1509 , B66F9/0655 , B66F9/07568
摘要： One of the mode lamps 38a, 38b and 38c of the mode indicator 38 corresponding to the current steering mode is turned on yellow and the other mode lamps are turned on green or turned off, thereby indicating whether front wheels 1, 1 and rear wheels 2, 2 are at neutral. A controller 39 does not operate a mode changing valve 24 even with an instruction outputted from a mode change switch 35 when the front and rear wheels are not at neutral, and operates, in response to an instruction outputted from the mode change switch 35, the mode changing valve 24 to establish a steering mode corresponding to the instruction when the front and rear wheels are at neutral. Also, the mode indicator 38 is controlled to always indicate, as the current steering mode, one corresponding to the steering mode actually established by the mode changing valve 24. With those features, in a working vehicle in which the mode of steering front and rear wheels can be changed over between two-wheel steering and four-wheel steering, a steering system having superior operability and high reliability can be provided.
摘要翻译：对应于当前转向模式的模式指示器38的模式灯38a，38b和38c中的一个被打开黄色，其他模式灯被打开为绿色或关闭，从而指示前轮1,1和后轮2,2处于空档状态。即使当前轮和后轮不处于空档时，即使从模式切换开关35输出的指令，控制器39也不操作模式切换阀24，并且响应于从模式切换开关35输出的指令而操作模式切换阀24，模式切换阀24，以在前轮和后轮处于空档时建立与指令对应的转向模式。此外，模式指示器38被控制为总是指示与当前转向模式相对应的模式切换阀24实际建立的转向模式。利用这些特征，可以提供在两轮转向和四轮转向之间转换前轮和后轮的转向模式的作业车辆中，具有优异的可操作性和高可靠性的转向系统。

2. 发明授权

US5236057A Rear wheel steering apparatus for vehicle 失效
标题翻译：后轮车轮转向装置
公开(公告)号：US5236057A
公开(公告)日：1993-08-17
申请号：US755015
申请日：1991-09-04
申请人： Shin Takehara , Hiroshi Ohmura , Ryuya Akita , Isamu Chikuma , Hiroyuki Ito , Hiroshi Eda
发明人： Shin Takehara , Hiroshi Ohmura , Ryuya Akita , Isamu Chikuma , Hiroyuki Ito , Hiroshi Eda
IPC分类号： B62D7/14 , B62D7/15
CPC分类号： B62D7/1572 , B62D7/148 , B62D7/159
摘要： A rear wheel steering apparatus for a vehicle, comprises a hydraulic cylinder for displacing a steering rod connected to left and right rear wheels axially, a centering spring for biasing the steering rod toward a neutral position, and a centering spring cancelling mechanism for preventing a biasing force of the centering spring from acting on the steering rod. A partition wall of the hydraulic cylinder defines an oil chamber in the cylinder and is formed as a cup shape having a central concave portion which constitutes a pressure chamber of the centering spring cancelling mechanism.

3. 发明授权

US4947328A Vehicle steering angle control system 失效
标题翻译：车辆转向角控制系统
公开(公告)号：US4947328A
公开(公告)日：1990-08-07
申请号：US195085
申请日：1988-05-17
申请人： Fukashi Sugasawa
发明人： Fukashi Sugasawa
IPC分类号： B62D7/14 , B62D7/15
CPC分类号： B62D7/1572 , B62D7/159
摘要： In order to imprive the accuracy of the time derivative of a steering angle signal consisting of discrete measured values, a vehicle steering control system for producing a steering angle control signal from the steering angle, the time derivative of the steering angle and other data is provided with a controller having a averaging section for periodically determining an average of a predetermined number of the measured values of the steering angle, and a differentiating section for determining the time derivative of the steering angle by using the averages determined by the averaging section, instead of directly using the steering angle signal.
摘要翻译：为了实现由离散测量值组成的转向角信号的时间导数的精度，提供了用于从转向角度产生转向角控制信号的车辆转向控制系统，转向角度的时间导数和其他数据控制器具有用于周期性地确定预定数量的转向角的测量值的平均值的平均部分，以及用于通过使用由平均部分确定的平均值来确定转向角的时间导数的微分部分，而不是直接使用转向角信号。

4. 发明授权

US4880073A Four-wheel steering system of a motor vehicle 失效
标题翻译：机动车四轮转向系统
公开(公告)号：US4880073A
公开(公告)日：1989-11-14
申请号：US278751
申请日：1988-11-30
申请人： Toshihiro Konno
发明人： Toshihiro Konno
IPC分类号： B62D5/07 , B62D6/00 , B62D6/02 , B62D7/14 , B62D7/15 , B62D101/00 , B62D113/00 , B62D123/00
CPC分类号： B62D7/1572
摘要： A front-wheel steering system has a hydraulic power cylinder, and a control valve responsive to operation of a steering wheel for controlling oil supplied to the power cylinder so as to assist steering effort. A detector cylinder device is provided for cooperating with the power cylinder. The detector cylinder has a detector piston, a pair of chambers formed on the opposite sides of the detector piston and communicated with chambers on opposite sides of the piston of the power cylinder, and a pair of springs provided in the chambers for urging the detector piston to a neutral position. A potentiometer is connected to one of a rod of the detector piston, thereby producing an output signal in accordance with displacement of the detector piston. In response to the output signal, rear wheels are steered.
摘要翻译：前轮转向系统具有液压动力缸，以及响应于方向盘操作的控制阀，用于控制供给动力缸的油，以辅助转向力。提供检测器气缸装置以与动力气缸配合。检测器气缸具有检测器活塞，一对腔室，形成在检测器活塞的相对侧上并与动力缸的活塞的相对侧上的腔室连通，以及设置在腔室中的一对弹簧，用于推动检测器活塞到中立位置。电位器连接到检测器活塞的杆之一，从而根据检测器活塞的位移产生输出信号。响应于输出信号，后轮被转向。

5. 发明授权

US4671376A Automatic differential locking system for a working vehicle 失效
标题翻译：工作车辆的自动差速锁定系统
公开(公告)号：US4671376A
公开(公告)日：1987-06-09
申请号：US775855
申请日：1985-09-13
申请人： Katsumi Ito , Shigeaki Okuyama , Norimi Nakamura , Yoshizo Kuroiwa , Kouji Fujiwara , Kunisuke Nakamura , Osami Fujiwara , Jituo Yoshida , Mitsugu Kobayashi
发明人： Katsumi Ito , Shigeaki Okuyama , Norimi Nakamura , Yoshizo Kuroiwa , Kouji Fujiwara , Kunisuke Nakamura , Osami Fujiwara , Jituo Yoshida , Mitsugu Kobayashi
IPC分类号： B60K23/04 , B62D7/15 , F16D48/12 , F16H48/30 , F16H59/58 , F16H63/30 , B60K17/35
CPC分类号： F16H57/037 , B60K23/04 , B62D7/1572 , F16H48/08 , F16H48/24 , F16H48/295 , F16H48/30 , F16H48/34 , F16H63/3023 , F16H2048/204 , F16H2200/2071 , F16H48/32 , F16H48/40 , F16H59/58
摘要： An automatic differential locking system for a working vehicle having steerable front and rear wheels, which includes a selector for selecting a steering mode of the vehicle, an actuator for operating a differential locking mechanism, and a gate for sending a control signal to the actuator in response to a signal received from the selector. The gate is adapted to send a differential locking signal to the actuator upon receipt of a parallel steering mode signal from the selector. In response to the differential locking signal the actuator actuates the differential locking mechanism. Since differential revolutions of the wheels are limited at times of parallel steering, the vehicle is capable of accurate course revisions and alterations without slipping.
摘要翻译：一种用于具有可转向的前轮和后轮的工作车辆的自动差速锁定系统，其包括用于选择车辆的转向模式的选择器，用于操作差速锁定机构的致动器和用于向控制器发送控制信号的门响应于从选择器接收到的信号。闸门适于在接收到来自选择器的平行转向模式信号时向致动器发送差速锁定信号。响应于差速锁定信号，致动器致动差动锁定机构。由于在平行转向时车轮的差速转动受到限制，所以车辆能够在没有滑动的情况下准确地进行修改和更改。

6. 发明授权

US4441572A Method and a system for steering a wheeled vehicle 失效
标题翻译：用于转向轮式车辆的方法和系统
公开(公告)号：US4441572A
公开(公告)日：1984-04-10
申请号：US305794
申请日：1981-09-25
申请人： Hideo Ito , Namio Irie
发明人： Hideo Ito , Namio Irie
IPC分类号： B62D6/02 , B62D5/06 , B62D6/00 , B62D7/14 , B62D7/15 , B62D9/00
CPC分类号： B62D9/00 , B62D5/06 , B62D6/00 , B62D7/1572 , B62D7/159
摘要： A method and system for steering a wheeled vehicle having a pair of rear steering road wheels, a pair of front steering road wheels, and a steering wheel for controlling a steering force applied to the pair of front steering wheels, wherein the pair of rear steering wheels is steered through an angle .delta.r proportioned at a ratio k to the angle .delta.f through which the pair of front steerable road wheels is steered and wherein the ratio k is given by(A-B.multidot.V.sup.2)/(C-D.multidot.V.sup.2)wherein V is a detected vehicle speed and A, B, C and D are predetermined parameters, and .delta.f is given bye.multidot..delta.f.sub.D /(1+k)when .delta.f.sub.D is the angle through which the steering wheel is turned and e is a constant.
摘要翻译：一种用于转向具有一对后转向车轮的轮式车辆的方法和系统，一对前转向车轮和用于控制施加到所述一对前转向盘的转向力的方向盘，其中所述一对后转向轮子被转向通过以比例k成比例的角度δr与角度Δf进行转动，通过该角度Δf可以控制一对前转向车轮，并且其中比率k由（A-BxV2）/（C-DxV2）给出，其中V 是检测到的车辆速度，并且A，B，C和D是预定参数，当ΔfD是方向盘转动的角度，e是常数时，delta f由ex delta fD /（1 + k）给出。

7. 发明授权

US4175638A Electronically controlled four-wheel steering 失效
标题翻译：电控四轮转向
公开(公告)号：US4175638A
公开(公告)日：1979-11-27
申请号：US965855
申请日：1978-12-04
申请人： Robert F. Christensen
发明人： Robert F. Christensen
IPC分类号： B62D7/15 , B62D5/08
CPC分类号： B62D7/1509 , B62D7/1572
摘要： A control mechanism for a steering system for individually or simultaneously controlling the turning movements of the front and rear wheels of a vehicle is disclosed herein. The steering system is capable of controlling the movement of the rear wheels in a plurality of modes with respect to the front wheels and one mode in which the rear wheels are independently controlled. The control mechanism includes a control member that is pivoted on the frame of the vehicle to a plurality of positions to move an actuating switch that is part of the control means to a plurality of positions corresponding to the respective modes of steering and actuating means that cooperates with a signal producing device that produces a control signal to independently control the turning movement of the rear wheels.
摘要翻译：本文公开了用于单独或同时控制车辆的前轮和后轮的转向运动的转向系统的控制机构。转向系统能够以相对于前轮的多个模式来控制后轮的运动，并且能够独立地控制后轮的一种模式。控制机构包括控制构件，该控制构件在车辆的框架上枢转到多个位置，以将作为控制装置的一部分的致动开关移动到对应于相应模式的转向和致动装置的多个位置具有产生控制信号以独立地控制后轮的转动运动的信号产生装置。

8. 发明授权

US08061469B2 Device for controlling the steering of a commercial vehicle, and vehicle comprising one such device 有权
标题翻译：用于控制商用车辆的转向的装置，以及包括一个这样的装置的车辆
公开(公告)号：US08061469B2
公开(公告)日：2011-11-22
申请号：US11917696
申请日：2005-06-14
申请人： Gilles Florean
发明人： Gilles Florean
IPC分类号： B62D7/15
CPC分类号： B62D7/1509 , B62D7/1572 , F15B7/003 , F15B11/006 , F15B2211/20538 , F15B2211/212 , F15B2211/30575 , F15B2211/31576 , F15B2211/327 , F15B2211/7054 , F15B2211/71
摘要： The disclosed device controls the steering of a commercial vehicle and comprises front wheels that can be oriented according to a first turning angle by a first actuator, rear wheels oriented according to a second turning angle by a second actuator, and a power circuit with a pressurized fluid source and power components that transmit hydraulic power to the actuators. The power components are controllable to configure the power circuit according to coupling modes between the front and rear wheels. The device includes a control circuit containing a power source and control components that are electrically controlled by an electrical control unit and transmit hydraulic commands relating to one of the determined coupling modes to the power components. The control components are hydraulically connected such that in the event of a fault in the electrical control, the commands permanently maintain the power circuit in the current coupling mode.
摘要翻译：所公开的装置控制商用车辆的转向，并且包括可以通过第一致动器根据第一转动角度定向的前轮，通过第二致动器根据第二转向角定向的后轮以及具有加压将液压动力传递给执行器的流体源和功率部件。功率部件可以根据前轮和后轮之间的耦合模式来配置电源电路。该装置包括控制电路，其包含由电控单元电控制的电源和控制部件，并将与所确定的耦合模式之一相关的液压命令传送到功率部件。控制部件被液压连接，使得在电气控制中发生故障的情况下，命令将电源电路永久地保持在当前耦合模式。

9. 发明授权

US06611415B1 Fail-safe circuit 有权
标题翻译：故障安全电路
公开(公告)号：US06611415B1
公开(公告)日：2003-08-26
申请号：US09676062
申请日：2000-09-29
申请人： Shinichi Hagidaira , Norimasa Amano , Kazuhiro Sasaki
发明人： Shinichi Hagidaira , Norimasa Amano , Kazuhiro Sasaki
IPC分类号： H01H900
CPC分类号： B62D7/148 , B62D5/07 , B62D7/1572
摘要： Provision of a fail-safe circuit which is capable of allowing a sub circuit to operate with reliability when a main circuit encounters abnormal conditions even in a system with only one supply source of pressure oil. A plurality of solenoid type control valves (3, 6) connected to an actuator (1) in parallel have centering springs respectively and are maintained at a neutral position in normal conditions. Each control valve is provided with a supply port, a return port and two actuator ports and is configured such that in the neutral position, the supply port and the return port are communicated with each other and interrupts communication with the actuator ports. And also, while the supply port (3a) of the most upstream control valve (3) is connected to a supply source (P) and the return port (6b) of the most downstream control valve (6) is connected to a tank (T), a return port (3b) of each control valve is connected a supply port (6a) of a control valve (6) located downstream from and adjacent to the connected return port (3b).
摘要翻译：提供故障保护电路，即使在仅一个压力油供应源的系统中，即使主电路遇到异常情况，子电路也能够可靠地运行。分别与致动器（1）连接的多个螺线管式控制阀（3,6）分别具有定心弹簧，并且在正常条件下保持在中立位置。每个控制阀设置有供给口，返回端口和两个致动器端口，并且构造成使得在中立位置，供应端口和返回端口彼此连通并且中断与致动器端口的连通。而且，最上游控制阀（3）的供给口（3a）与供给源（P）连接，最下游控制阀（6）的返回口（6b）与罐每个控制阀的返回端口（3b）连接在位于连接的返回端口（3b）的下游和邻近的控制阀（6）的供应口（6a）上。

10. 发明授权

US5291964A Apparatus for automatically centering a steerable wheel 失效
标题翻译：用于自动对准可转向轮的装置
公开(公告)号：US5291964A
公开(公告)日：1994-03-08
申请号：US828243
申请日：1992-01-30
申请人： Ronald L. Groenenboom
发明人： Ronald L. Groenenboom
IPC分类号： B62D7/14 , B62D7/15 , B62D5/06
CPC分类号： B62D7/1572 , B62D7/142 , B62D7/148 , B62D7/1509
摘要： An apparatus for centering a steerable wheel or wheels of a ground-travelling machine. The centering apparatus includes an electrically controlled hydraulic steering system for steering of a wheel or wheels which is operable in either a manual or automatic mode. A cam is mounted for pivotal movement in response to the steering direction of the wheel or wheels. A pair of switches are mounted adjacent the cam and are alternately actuated by the cam in response to pivotal movement of the wheel or wheels. When the automatic mode is selected, the corresponding one of the switches will act to control the hydraulic system so as to pivot the wheel or wheels to the centered position. Upon reaching the centered position, the cam will release the actuated switch thereby ceasing steering movement of the wheel or wheels.
摘要翻译：一种用于对准地面行进机器的可转向轮或车轮的装置。定心装置包括用于转向轮或轮的电控液压转向系统，其可以手动或自动模式操作。安装凸轮来响应于车轮或车轮的转向方向进行枢转运动。一对开关安装在凸轮附近，并且响应于轮或轮的枢转运动而被凸轮交替致动。当选择自动模式时，相应的一个开关将用于控制液压系统，以便将车轮或车轮枢转到中心位置。当达到中心位置时，凸轮将释放致动的开关，从而停止车轮或车轮的转向运动。

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