Processing technology and application method of anchor rod capable of improving anchoring performance

Abstract

A processing technology of an anchor rod capable of improving anchoring efficiency, including an extrusion process, in which a serpentine mouth with a special structure is formed at one end of the anchor rod body through standard extrusion, and the specific processing flow preferably includes shearing, extrusion Pressing, beveling, diameter reduction, thread rolling, and assembly processes. In the assembly process, the anchor rod body is assembled with the pre-tightening accessories. The pre-tightening accessories preferably include anti-shear tray-spherical pad components, anti-friction gaskets, Metal gaskets and fixed damping nuts, the anchor rod body is divided into the inner inner rod and the outer outer rod with the tray as the boundary, the extruded section with the serpentine mouth is at the far end of the inner rod, and the outer rod is in order from the inside to the outside Set of spherical pads, anti-friction pads, metal pads and fixed damping nuts. The above-mentioned anchor rod supports the surrounding rock when it is in use, and the anchoring agent in the hole is fully stirred through the serpentine mouth of the special structure, which has the effect of increasing the anchor. shear stress.

Description

technical field [0001] The invention relates to the field of composite pressure processing of metal rods, in particular to a processing technology of an anchor rod capable of improving anchoring efficiency, and the prepared anchor rod can be assembled with a pre-tightening component and applied in support occasions of mining and tunnel engineering. Background technique [0002] Bolts are common throughout the world and are typically drilled into and retained in the rock formation to provide support to the entirety of the rock formation that aids the support structure. For example, bolts can be used in buildings and mines, tunnels, waterways, canals, walls, shafts, aisles, access passages, tunnels, etc. [0003] Anchor is a bar system structure for rock and soil reinforcement. Through the longitudinal tension of the anchor rod body, it overcomes the shortcoming that the tensile capacity of rock and soil is far lower than the compressive capacity. On the surface, it seems to ...

AI Technical Summary

Problems solved by technology

[0004] For rock burst roadway, soft rock roadway, broken surrounding rock roadway, and roadway with easy-to-collapse holes along the goblin during the bolt support construction process, if the anchoring agent is directly put into the bolt hole and then put into the conventional bolt for stirring, due to The wall of the hole in the weak and broken surrounding rock cannot fully contact the anchoring agent or the ratio of the diameter of the hole to the diameter of the anchor rod does not match. The hidden danger of roadway structural support, if the shape of the anchor rod is changed too much just to enhance the efficiency of stirring the anchoring agent, the yield strength and tensile strength of the anchor rod may be greatly weakened, leaving the structural hidden danger of the anchor rod, such as patent CN94206148 As mentioned in .9, the front end of the anchor rod has a flat serpentine shape, and the front end of the anchor rod is bent in a plane snake shape. A large structural hidden danger is caused, and the plane serpentine bending has high requirements on the drilling diameter, and the processing cost and construction cost are relatively large

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