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    Cattle ranch gate
    2.
    发明授权
    Cattle ranch gate 失效
    牛牧场门

    公开(公告)号：US3895460A

    公开(公告)日：1975-07-22

    申请号：US49806974

    申请日：1974-08-16

    申请人： LUBMANN ELMONT C

    发明人： LUBMANN ELMONT C

    IPC分类号： E06B11/02 ,  E06B11/00

    CPC分类号： E06B11/02

    摘要： A cattle ranch gate is for use on a roadway and includes a pair of fixed upright posts disposed opposite each other on opposite sides of the roadway. Each post carries a gate support made up of beams arranged in a triangular shape with the hypotenuse beam disposed horizontally and centrally secured to its post top. The support beams meeting at the opposite apex are also secured to the post. At the opposite ends of the hypotenuse beam sheaves are secured. A gate panel extends across the roadway between the posts and has a rectangular frame spanned by barrier cables and extended at the bottom to provide pivot pins supported in the respective posts. The pivot pins permit pivotal movement of the gate panel about a horizontal axis very close to the roadway. Upstanding from the ends of the bottom tube of the gate frame is a pair of upright arms, each of which carries a sheave at its upper end. Around each sheave is the central part of one of a pair of lines each included in one of a pair of balance reevings. Each line extends upwardly over the sheaves at the ends of the adjacent hypotenuse beam and then depends therefrom, at each end carrying a counterweight, making four in all. Intermediate portions of the balance reeving line engage a pair of pulleys secured to the top of the post. The arrangements at both ends of the gate are symmetrical. At the center of the gate is an impact plate upstanding to a substantial distance. In normal, closed position the gate is held upright between the posts by the counterweights resting on the ground. To get through the gate, a vehicle simply drives against the impact plate in the desired direction and so rotates the gate panel around the low horizontal axis into a flat position and continues to drive over the flat gate panel. The downwardly rotating gate lifts the counterweights, but as soon as the vehicle has passed the counterweights restore the gate panel to its closed, upright position.

    摘要翻译： 一个牛牧场门用于道路上，包括一对在道路相对两侧相对设置的固定立柱。 每个柱子都带有由三角形布置的梁组成的门支架，斜边梁水平放置并集中固定到其顶部。 在相对顶点处会聚的支撑梁也固定到柱上。 在斜边的两端固定梁束。 门板延伸穿过柱之间的道路，并且具有由阻挡电缆跨越的矩形框架并且在底部延伸以提供支撑在相应的柱中的枢轴销。 枢轴销允许门板围绕非常接近道路的水平轴线的枢转运动。 从门框的底管的端部直立是一对直立臂，每个臂在其上端承载滑轮。 围绕每个滑轮是一条线之一的中心部分，每条线都包含在一对平衡线之一中。 每条线在相邻的斜边梁的端部处的绳轮上方向上延伸，然后在每个端部承载着配重，从而完全成为四条。 平衡紧固线的中间部分接合固定到柱的顶部的一对滑轮。 闸门两端的布置是对称的。 在门的中心是一个冲击板，直到相当远的距离。