公开(公告)号：US07367412B2

公开(公告)日：2008-05-06

申请号：US11412029

申请日：2006-04-26

Applicant: Anthony R. Barbera ,  David M. Barbera

Inventor： Anthony R. Barbera ,  David M. Barbera

IPC: E21B10/44 ,  E02D29/05

CPC classification number: E21B10/20 ,  E21B7/201

Abstract: A rock head for use with an auger borer to bore a passageway through a body of soil and rock and simultaneously laying a pipe in that bored passageway. The rock head has a base connectable to the leading end of the auger. A plurality of movable mounts are provided on the base and a roller cone is secured to each movable mount. A spring is disposed between the movable mount and the base. The spring is compressed as the movable mount pivots the roller cones inwardly toward a central region of the base. This reduces the diameter of the rock head so that it can travel through the bore. Each movable mount is provided with at least one wheel so that it can ride smoothly through the bore. When the rock head exits the pipe, the springs automatically pivots each roller cone outwardly so that at least a portion thereof is disposed beyond the outermost edge of the base. In this second position, the rock head has a greater diameter than the pipe bore and therefore it cannot travel therethrough. When the auger is withdrawn through the pipe, the movable mounts pivot the roller cones from the second position back to the first position, thereby causing the rock head to collapse to a diameter sufficiently small enough to travel back through the pipe.

Abstract translation: 一个用于与螺旋钻凿孔的岩石头，通过一个通过一块土壤和岩石的通道，同时在这个无聊的通道中铺设管道。 岩石头具有可连接到螺旋钻的前端的基座。 多个可移动的安装件设置在基座上，并且一个滚子锥固定到每个可移动的支架上。 弹簧设置在可移动的底座和基座之间。 弹簧被压缩，因为可移动的安装件使辊子向内转动朝向底座的中心区域。 这样可以减小岩石头的直径，使其能穿过孔。 每个可移动的安装件设置有至少一个车轮，使得其可以顺利地穿过该孔。 当岩石头离开管道时，弹簧自动地将每个滚子锥体向外枢转，使得其至少一部分设置在基座的最外边缘之外。 在该第二位置，岩石头具有比管孔更大的直径，因此它不能穿过其中。 当螺旋钻通过管子撤回时，可移动的安装件将辊锥从第二位置枢转回到第一位置，从而使岩石头塌陷到足够小的直径以便穿过管道返回。