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公开(公告)号:US20090041550A1
公开(公告)日:2009-02-12
申请号:US11890800
申请日:2007-08-07
IPC分类号: E21D20/00
CPC分类号: E21D21/008 , E21D20/025
摘要: An expansion anchor assembly for a mine roof bolt having a tapered plug, expansion leaves, a bail and a removable holding ring configured to hold the expansion anchor assembly in an assembled position is disclosed. The tapered plug is configured to be threaded onto the mine roof bolt and defines plug channels to encourage symmetrical resin flow past the tapered plug. The bail defines a medial opening through which the mine roof bolt extends.
摘要翻译: 公开了一种用于具有锥形塞子,膨胀叶片,吊钩和可拆卸保持环的矿井屋顶螺栓的膨胀锚固组件,其构造成将膨胀锚固组件保持在组装位置。 锥形塞被构造成螺纹连接到矿井屋顶螺栓上,并且形成插塞通道以促进对称的树脂流过锥形塞。 吊环定义了一个内侧开口,矿顶车顶螺栓通过该开口延伸。