Automatic roof bolting drill retention apparatus
    7.
    发明授权
    Automatic roof bolting drill retention apparatus 失效
    自动顶板螺栓钻保持装置

    公开(公告)号:US4342487A

    公开(公告)日:1982-08-03

    申请号:US126059

    申请日:1980-02-29

    CPC classification number: E21D20/003 E21B19/24

    Abstract: A drill steel support assembly for a mining roof bolting machine is presented. The assembly is utilized for retaining and guiding a drill steel on a roof bolting machine during the collaring of the drill steel in the mine roof. Once collared, the drill steel is released by the retaining assembly inasmuch as the latter is not necessary for support purposes after collaring has occurred. The release of the drill steel from the retaining assembly is accomplished when the vibrations from the drill steel are sufficient to open the support mechanism once the drill has been collared.

    Abstract translation: 提出了一种用于采矿屋顶螺栓连接机的钻钢支撑组件。 该组件用于在矿井顶部的钻钢的夹套期间在钻机上保持和引导钻钢。 一旦套圈,钻钢被保持组件释放,因为后者在发生碰撞之后不需要用于支撑目的。 当钻头已经被钻孔时,当来自钻钢的振动足以打开支撑机构时,实现钻钢从保持组件的释放。

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