Electro-hydraulic load sense on a power machine
    14.
    发明申请
    Electro-hydraulic load sense on a power machine 审中-公开
    动力机器上的液压负载感

    公开(公告)号:US20020070071A1

    公开(公告)日:2002-06-13

    申请号:US09733110

    申请日:2000-12-08

    Inventor: Scott N. Schuh

    Abstract: A power machine includes one or more steerable wheels. The wheels are steerable using a hydraulic actuator to drive steering movement of the wheels. The power machine also includes steering angle sensors which sense the steering angle and provide a signal indicative of the angle at which the wheels are disposed relative to a longitudinal axis of the power machine. A hydraulic control system controls pressure of hydraulic fluid provided to the steering actuators based upon the steer angle position and desired change in position over time sensed by the steer angle sensors.

    Abstract translation: 动力机器包括一个或多个可转向轮。 使用液压执行器来驱动车轮可以驱动车轮的转向运动。 动力机器还包括转向角传感器,其感测转向角并且提供指示相对于动力机器的纵向轴线设置车轮的角度的信号。 液压控制系统基于转向角位置和由转向角传感器感测到的期望的位置变化来控制提供给转向致动器的液压流体的压力。

    Load measuring apparatus
    18.
    发明授权
    Load measuring apparatus 失效
    负载测量仪

    公开(公告)号:US5113710A

    公开(公告)日:1992-05-19

    申请号:US539127

    申请日:1990-06-12

    Abstract: A load measuring device for an oleopneumatic load intensifier apparatus which causes a rapid advance of a tool carrying piston rod followed by slow advance of the piston rod at an increased load. the oleopneumatic apparatus has a master cylinder and an actuating cylinder that can assume different positions with respect to the master cylinder while maintaining fluid communication therewith. An enclosed hydraulic system is shared by the master and actuating cylinders. Pneumatic pressure actuates a piston within the master cylinder that causes a rapid advancement of a hydraulic fed piston withihn the actuating cylinder, causing a piston rod and a tool associated therewith to contact a workpiece. The load measuring device monitors the load associated with the pneumatic pressure applied to the piston and associated piston rod, located in the master cylinder and the resultant force applied to the hydraulic fed piston located within the actuating cylinder to precisely determine the load delivered to the workpiece.

    Abstract translation: 一种用于油气动负荷增强器装置的负载测量装置,其使得工具承载活塞杆快速前进,随后在增加的载荷下缓慢推进活塞杆。 油气装置具有主缸和致动缸,其可以相对于主缸呈现不同的位置,同时保持与其的流体连通。 封闭的液压系统由主缸和致动缸共用。 气动压力致动主缸内的活塞,导致液压进给活塞与致动缸快速前进,导致活塞杆和与其相关联的工具接触工件。 负载测量装置监测与施加到主缸中的活塞和相关联的活塞杆的气动压力相关联的负载以及施加到位于致动缸内的液压进给活塞的合力,以精确地确定输送到工件的负载 。

    Fluid power apparatus for industrial robots and the like
    19.
    发明授权
    Fluid power apparatus for industrial robots and the like 失效
    用于工业机器人的流体动力装置等

    公开(公告)号:US4667475A

    公开(公告)日:1987-05-26

    申请号:US848237

    申请日:1986-04-04

    Inventor: Verne A. Wesman

    Abstract: A fluid power apparatus particularly useful for an industrial robot which includes a pair of expansible chamber devices each having a pair of control chambers in fluid communication with each other to intensify the working fluid output pressure and a working chamber that expands to receive a charge of working fluid and contracts to expel working fluid therefrom. A working fluid circuit includes a first line connected with one of the working chambers and a second line connected with the other of the working chambers. A fluid actuator is connected with the circuit and has a moveable element that moves in response to flow of working fluid in the circuit to the actuator. The apparatus has a static condition in which the one working chamber is contracted with the moveable element of the actuator stationary in a first position. A control mechanism is operable in response to a demand to change the position of the moveable element from the first position to a second position to sequentially alternately contract and expand the working chambers, respectively, to cause flow of working fluid to the actuator and move the element to the second position and thereafter restore the static condition.

    Abstract translation: 一种特别适用于工业机器人的流体动力装置,其包括一对可膨胀室装置,每个可膨胀室装置具有彼此流体连通的一对控制室,以加强工作流体输出压力;以及工作室,其膨胀以接收工作量 流体并收缩以从中排出工作流体。 工作流体回路包括与工作室中的一个连接的第一管线和与另一工作室连接的第二管路。 流体致动器与电路连接并且具有响应于电路中的工作流体流向致动器而移动的可移动元件。 该装置具有静止状态,其中一个工作室与致动器的可移动元件在第一位置收缩。 控制机构响应于将可移动元件从第一位置的位置改变到第二位置的顺序交替地依次地交替地收缩和扩大工作室而使操作流体流动到致动器并使其移动 元件到第二位置,然后恢复静态。

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