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公开(公告)号:US4026116A
公开(公告)日:1977-05-31
申请号:US639010
申请日:1975-12-09
申请人: John Charles Purcupile , Angela L. Lenden , Thomas A. Mutschler , Joel D. Kneisley , Mark P. Wieszczyk , Ronald Lasser , Donald W. Fulmer
发明人: John Charles Purcupile , Angela L. Lenden , Thomas A. Mutschler , Joel D. Kneisley , Mark P. Wieszczyk , Ronald Lasser , Donald W. Fulmer
CPC分类号: E21D23/0056 , E21C11/00 , E21D20/003
摘要: A roof pin-or-bolt setting machine which applies sonic energy to drive bolts which may be of non-circular section or helical into the roof of a coal mine. The energy is supplied by a bar which is set into sonic vibration in its bending mode so that there is a standing wave along the bar having nodes and anti-nodes. The bolt is supported vertically at an anti-node position of the bar and is driven into the roof as the bar is vibrated. Continuous vertical force is applied to the bar to maintain the bolt in engagement with the roof under pressure.
摘要翻译: 一种屋顶销钉或螺栓固定机,可将声波能量驱动到可能是非圆形截面或螺旋形的煤矿顶部的螺栓。 能量由在其弯曲模式中被设置成声音振动的条提供,使得沿着具有节点和反节点的条具有驻波。 螺栓在杆的反节点位置垂直支撑,并在杆振动时被驱动到屋顶中。 连续的垂直力被施加到杆,以保持螺栓在压力下与屋顶接合。