A Tension Lock Anchor

Abstract

The invention relates to the field of anchor rods, and specifically relates to a tensioning-locking anchor rod. The tensioning-locking anchor rod comprises an anchor rod assembly, a drilling assembly,a grout stopping assembly and a backing plate assembly, wherein the drilling assembly is arranged at one end of the anchor rod assembly; and the grout stopping assembly and the backing plate assemblyare arranged at one end away from the drilling assembly, of the anchor rod assembly separately, and the grout stopping assembly is arranged at one side close to the drilling assembly, of the backingplate assembly. A better reinforcing effect on the anchor rod is achieved through the backing plate assembly; when a backing plate main body is bonded with a surrounding rock wall, in the case of a low smoothness degree of the surrounding rock wall, a first sleeve is rotated, and capable of driving a support rod to move; during the movement of the support rod, due to an invariable length of the support rod, the included angle between the support rod and a backing plate spoke is changed, so that the angle between the backing plate spoke and the surrounding rock wall is adjusted; and the backingplate assembly can be better bonded with the surrounding rock wall, and therefore has a better reinforcing effect on the surrounding rock wall.

Description

technical field [0001] The invention relates to the field of anchor rods, in particular to a tension-locked anchor rod. Background technique [0002] The bolt is the most basic part of the roadway support in the coal mine. The bolt strengthens the surrounding rock of the roadway together, so that the surrounding rock supports itself. At the same time, anchor rods are not only used in mines, but also in engineering technology for main body reinforcement of slopes, tunnels and dams. As a tensile member that goes deep into the ground, the bolt is connected to the engineering structure at one end, and the other end goes deep into the ground. The whole bolt is divided into a free section and an anchor section. area, whose function is to apply prestress to the anchor. Most of the existing anchor rods are composed of anchor rod, anchor head, grout plug, backing plate and nut. The anchor head is fixedly connected to one end of the anchor rod, and the grout stopper and backing plat...

AI Technical Summary

Problems solved by technology

[0003] When the flatness of the surrounding rock wall of the coal mine roadway is low, the anchor rod causes the grout plug to not block the drill hole better, so that the cement slurry will flow out from the gap between the grout plug and the surrounding rock, making the The effect of grouting is poor. Most of the existing backing plates are square or circular plates made of a metal plate. When the flatness of the surrounding rock wall is low, the flat backing plate cannot be well connected with the surrounding rock wall. fit, the reinforcement effect of the anchor is greatly weakened

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