Load-sensing and pressure-limiting device with accelerated tripping
    2.
    发明授权
    Load-sensing and pressure-limiting device with accelerated tripping 失效
    负载感应和限压装置加速跳闸

    公开(公告)号:US3922954A

    公开(公告)日:1975-12-02

    申请号:US38526973

    申请日:1973-08-03

    申请人: TICO AB

    摘要: A load-sensing and pressure-limiting device is disclosed for fluid-driven appliances having at least two fluid-driven working motors, in which the load on a first working motor is variable by operating one or more other working motors, wherein a pressure proportional to the load on the first working motor is sensed by the device and used to avoid overloading of the first working motor. The sensing device has a primary piston with smaller cross-sectional area, intended to sense the load on the first working motor, and a secondary piston with larger cross-sectional area, both pistons being displaceable in a cylinder having two slots of different cross-sectional area, corresponding to said area of the pistons, to a tripping position where one or more ports communicating with the fluid pipes of the one or more other working motors are opened, whereby the fluid pressure applied to these other working motors can act upon the secondary piston and move it further in tripping direction.

    摘要翻译: 公开了一种用于具有至少两个流体驱动工作电动机的流体驱动设备的负载感测和压力限制装置,其中第一工作电动机上的负载通过操作一个或多个其它工作电动机而变化,其中压力成比例 第一工作电动机的负载由装置感测并用于避免第一工作电动机的过载。 感测装置具有较小横截面面积的主活塞,用于感测第一工作电动机上的负载,以及具有较大横截面面积的次级活塞,两个活塞可在具有不同截面积的两个槽的气缸中移动, 对应于活塞的所述区域的截面面积与脱开位置相连,其中一个或多个端口与一个或多个其它工作电动机的流体管道连通,由此施加到这些其它工作电动机的流体压力可以作用在 二次活塞,并在跳闸方向进一步移动。