The invention discloses an expansion type high strength bolt, comprising a rod body, the tail of the rod body is provided with a cylindrical connecting rod, the connecting rod diameter less than the diameter of the rod body, the end of the connecting rod are provided with connecting Taiwan, Taiwan connection head diameter greater than the diameter of the connecting rod, the connecting rod sleeved outside the internal expansion sleeve. In the expansion sleeve comprises a sleeve and a casing at the top of the connecting sleeve, the outer side of the bottom casing is arranged into the horn, a connecting sleeve at the bottom of the inner diameter smaller than the diameter of the head connecting platform, a connecting sleeve top diameter greater than the diameter of the head connecting Taiwan, Taiwan connected into the casing, internal expansion sleeve sleeved outside the external expansion sleeve outside, the expansion sleeve is arranged on the lower part of a cutting port, external expansion sleeve part into a plurality of expansion. The invention of the expansion type high strength bolt, when the anchor is drawing, connecting platform drives the internal expansion sleeve movement, because the expansion sleeve is horn shaped, which makes the external expansion sleeve expansion, drawing force greater the greater the expansion, thereby anchoring effect.
【技术实现步骤摘要】
【技术保护点】
１．一种膨胀型高强锚杆，包括杆体，其特征在于：所述杆体的尾部设有柱形连接杆，连接杆的直径小于杆体的直径，连接杆的末端设有连接台，连接台头部直径大于连接杆的直径，连接杆外部套有内膨胀套，内膨胀套包括套管和套管顶部的连接卡套，套管的底部外侧设置成喇叭形，连接卡套底部的内径小于连接台头部的直径，连接卡套顶部的内径大于连接台头部的直径，连接台伸入套管内，内膨胀套的外部套有外膨胀套，外膨胀套的下部设有多个切割口，将外膨胀套下部分成多个膨胀条。
【技术特征摘要】
【专利技术属性】
技术研发人员：莫维永，
申请(专利权)人：安徽佳泰矿业科技有限公司，
类型：发明
国别省市：34
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