公开(公告)号：US06834736B2

公开(公告)日：2004-12-28

申请号：US10321325

申请日：2002-12-17

申请人： Bradley James Kramer ,  Eric Norman Griesbach ,  Jeffrey A. Rogala

发明人： Bradley James Kramer ,  Eric Norman Griesbach ,  Jeffrey A. Rogala

IPC分类号： B62D4900

CPC分类号： B60G17/015

摘要： A suspension system isolates the operator cab or seat from vibrations in the chassis of a vehicle. At least one hydraulic actuator is connected between the cab or seat and the vehicle chassis. An accumulator is coupled to the hydraulic actuator and acts as a hydraulic spring to attenuate high frequency vibrations. An electrically operable, three-position, closed-center control valve selectively connects the hydraulic actuator to a source of pressurized hydraulic fluid or a reservoir. Sensors detect acceleration and displacement of the cab or seat to which a controller responds by operating the valve. That control of the valve actively drives the hydraulic actuator to produce motion that counters the relatively low frequency vibrations from the chassis.

摘要翻译： 悬挂系统将驾驶室或座椅与车辆底盘中的振动隔离开来。 至少一个液压执行器连接在驾驶室或座椅与车辆底盘之间。 蓄能器联接到液压致动器并用作液压弹簧以衰减高频振动。 电气可操作的三位置闭合中心控制阀选择性地将液压致动器连接到加压液压流体源或储存器。 传感器通过操作阀门来检测控制器响应的驾驶室或座椅的加速度和位移。 阀的这种控制主动地驱动液压致动器以产生对来自底盘的相对低频振动的运动。

公开(公告)号：US06612375B2

公开(公告)日：2003-09-02

申请号：US10004328

申请日：2001-11-02

申请人： Jeffrey A. Rogala

发明人： Jeffrey A. Rogala

IPC分类号： A01B63112

CPC分类号： B60G17/015 ,  A01B63/10 ,  A01B63/112 ,  B60G17/005 ,  B60G2204/4605 ,  B60G2300/082 ,  B60G2500/322 ,  B60G2800/0192

摘要： An apparatus and method for controlling variation in the pitch of an agricultural vehicle, where the apparatus includes a controller that controls a position of an implement attached to the agricultural vehicle, and a first valve that is coupled to, and receives a first control signal from, the controller. The apparatus further includes a suspension cylinder having a first chamber that is hydraulically coupled to the first valve. The first control signal provided from the controller is functionally related to a first additional control signal provided by the controller, and the first additional control signal is used to determine the position of the implement.

摘要翻译： 一种用于控制农用车辆的俯仰变化的装置和方法，其中所述装置包括控制器，其控制附接到农用车辆的工具的位置，以及第一阀，其耦合到第一控制信号，并且接收来自 ，控制器。 该装置还包括具有液压耦合到第一阀的第一室的悬架气缸。 从控制器提供的第一控制信号与由控制器提供的第一附加控制信号功能相关，并且第一附加控制信号用于确定设备的位置。

公开(公告)号：US06575484B2

公开(公告)日：2003-06-10

申请号：US09909640

申请日：2001-07-20

申请人： Jeffrey A. Rogala ,  Eric N. Griesbach

发明人： Jeffrey A. Rogala ,  Eric N. Griesbach

IPC分类号： B60G904

CPC分类号： B60G17/015 ,  B60G13/14 ,  B60G17/033 ,  B60G17/056 ,  B60G2300/082 ,  B60G2400/252 ,  B60G2800/914

摘要： A vehicle suspension has one or more hydraulic cylinders connecting an axle to a frame of the vehicle and each cylinder has a first and second chambers. The suspension operates in either a regeneration mode, in which a fluid path is provided between the first and second chambers, and a double acting mode, in which the first and second chambers are isolated from each other and fluid flows between each chamber and a separate accumulator. The selection between the regeneration and double acting modes is made in response to the pressure level in the cylinder as determined by a pressure sensor of a closed loop control system or by the pressure versus current characteristics of a electrically operated valve in the suspension for a loop control system. The hydraulic system also is able to raise and lower the suspension as necessary due to changes in the load carried by the vehicle.

摘要翻译： 车辆悬架具有将轴连接到车辆的框架的一个或多个液压缸，并且每个缸具有第一和第二室。 悬架以再生模式工作，其中在第一和第二室之间设置有流体路径，以及双作用模式，其中第一和第二室彼此隔离，并且流体在每个室和单独的室之间流动 累加器。 在再生和双作用模式之间的选择是响应于由闭环控制系统的压力传感器确定的气缸中的压力水平或通过用于回路的悬架中的电动阀的压力 - 电流特性来进行的 控制系统。 液压系统还能够根据车辆的载荷变化而根据需要提升和降低悬架。