High-strength metal pressure-yielding anchor rod with headed tail
It is a high-strength technology for pressure bolts, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc. It can solve the problems of anchor bolt and anchor tail breakage, so as to prevent anchor tail breakage, yield load and ultimate load increase , Guarantee the effect of anchoring strength
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[0018] See attached figure 1 , which describes a preferred embodiment of the high-strength metal thick tail yielding bolt according to the present invention. It includes an anchor rod body, a tray, a pressure relief pipe and a nut. The anchor rod body includes a head (not shown), a rod body and a tail. The head and the tail are respectively located at both ends of the rod body. Into the roadway wall or roof, its structure and function are common knowledge in this field, and will not be repeated here. After the bolt anchoring is completed, the tail is left on the outside of the roadway wall or roof, and does not enter the anchored object. middle. The anchor rod body is integrally formed by high-strength cylindrical threaded steel, so there is no connecting part between the rod body and the tail to ensure the integrity of the overall structure of the rod body. The diameter of the tail is increased through the thickening process. At the same time, the strength of the tail is al...
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