公开(公告)号：US4114698A

公开(公告)日：1978-09-19

申请号：US551083

申请日：1975-02-20

申请人： Daniel R. Webb ,  John R. Steinke ,  Robert W. Berry ,  Stanard R. Funsten

发明人： Daniel R. Webb ,  John R. Steinke ,  Robert W. Berry ,  Stanard R. Funsten

IPC分类号： E21B7/02 ,  E21B17/07 ,  E21B17/18 ,  E21B19/08 ,  E21B19/20 ,  E21D3/00 ,  E21B7/00

CPC分类号： E21B17/07 ,  E21D3/00

摘要： A vertical thrust boring machine adapted to be positioned in the horizontal drift of a mine and to cut a tunnel extending upwardly from the drift so as to remove ore or other cuttings therefrom. The machine includes a rotary table for lifting a drill string which in turn supports the cutter head, and is characterized by drill stem sections having a spline connection on their lower ends, and a drive coupling ring associated with the rotary platform having a mating spline connection, so that when changing the length of the drill string the lowermost drill stem section can slide or float vertically relative to the rotary platform at the same time that it is being drivingly rotated.

摘要翻译： 一种垂直推力镗床，适于定位在矿井的水平漂移中，并切割从漂移物向上延伸的隧道，以便从其中移除矿石或其他钻屑。 该机器包括用于提升钻柱的旋转台，该钻柱又支撑刀头，并且其特征在于在其下端具有花键连接的钻杆段和与旋转平台相关联的驱动联接环，该旋转平台具有配合的花键连接 ，使得当改变钻柱的长度时，最下面的钻杆部分可以在其被驱动旋转的同时相对于旋转平台垂直地滑动或浮动。