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    • 6. 发明授权
    • Jack assembly for railroad cars
    • 千斤顶组装铁路车
    • US4805875A
    • 1989-02-21
    • US002936
    • 1987-01-13
    • Kenneth J. JacksonJagdish ShahRobert E. Graham, Jr.
    • Kenneth J. JacksonJagdish ShahRobert E. Graham, Jr.
    • B66F3/24B66F3/28B60P1/00
    • B66F3/24B66F3/28
    • The disclosed jack assembly has an elongated structural beam of sufficient length to extend between and beyond the two rails of a railroad track to be supported on top of the rails. A compact power lift cylinder, in the form of a multiple-sleeve power cylinder, is connected to the beam; and a car engaging plate is coupled to the power lift cylinder, to be moved in a direction transverse to the beam. The silhouette of the beam, power lift cylinder and plate is low, when the power lift cylinder is contracted, to allow them to be fitted with clearance to a lifting position, under a railroad car with the beam extended across the track rails and the car engaging plate vertically aligned under the railroad car frame. The power lift cylinder has a power stroke sufficient to lift the overlying railroad car enough above the rails to remove the railroad car completely from one wheeled truck assembly, for replacement or the like. Blocks carried on the beam can be shifted against the raised car engaging plate, to hold it independently of failure of the power lift. A pumping system for the power lift is located laterally beyond the one side of the road car, with operating controls within easy reach of someone standing at this location. The pumping system can optionally be secured as a unitary part of the jack assembly, or as a separate unit. The jack assembly can be used from either side of the car, typically at a location between the wheeled truck assemblies supporting the car.
    • 所公开的千斤顶组件具有足够长度的细长结构梁,以在铁轨的两个轨道之间延伸并延伸,以支撑在轨道的顶部。 以多套动力缸形式的小型动力提升缸连接到梁上; 并且轿厢接合板联接到动力提升缸,以沿横向于梁的方向移动。 梁,动力提升缸和板的轮廓较低,当动力提升缸收缩时,允许它们在提升位置上安装有间隙,在铁路车辆下方,横梁延伸穿过轨道轨道和汽车 接合板垂直对齐在铁路车架下。 动力提升缸具有足够的动力冲程,足以在上面的轨道上提升上面的铁路车辆,以完全从一个轮式卡车组件移除铁路车辆,以进行更换等。 承载在梁上的块可以抵靠凸起的轿厢接合板移动,以保持其独立于动力升降的故障。 用于动力升降机的泵送系统位于横向超越道路车一侧的位置,其操作控制可以容易地到达位于该位置的人。 泵送系统可以可选地被固定为千斤顶组件的整体部件,或者作为单独的单元。 千斤顶组件可以从汽车的任一侧使用,通常在支撑汽车的轮式卡车组件之间的位置。