Novel spring anchor rod

Abstract

The novel spring anchor rod comprises an anchoring rod, a water filtering rod arranged above the anchoring rod and a prestressed rod arranged above the water filtering rod, a first threaded column is fixed to the top of the anchoring rod, a first inner threaded groove matched with the first threaded column is formed in the inner wall of the water filtering rod, a second threaded column is fixed to the top of the water filtering rod, and a second inner threaded groove matched with the second threaded column is formed in the inner wall of the second threaded column. And a second internal thread groove matched with the second threaded column is formed in the inner wall of the prestressed rod. According to the novel spring anchor rod, through the arrangement of the free extending mechanism, the extending length of the internal thread extending rod can be freely adjusted, operation is convenient, then the length of the fixing rod can be extended and shortened, change is free, limitation in the actual use process is small, through the arrangement of the locking mechanism, an adjusting disc in the free extending mechanism can be conveniently locked, and the use effect is good. And rotation after adjustment is prevented, so that the length of the internal thread extension rod can be kept unchanged, and the use safety is high.

Description

technical field [0001] The invention relates to the technical field of anchor rods, in particular to a novel spring anchor rod. Background technique [0002] Anchor is the most basic part of roadway support in contemporary coal mines. It reinforces the surrounding rock of the roadway so that the surrounding rock can support itself. Now the bolt is not only used in mines, but also in engineering technology. For the main reinforcement of slopes, tunnels, and dams, anchor rods, as one of the main support forms for underground engineering and rock slopes, play an important role in maintaining the stability of civil engineering, especially in jointed and fractured rock masses. The reinforcement effect of the anchor rod on the rock mass is very obvious. [0003] According to the patent No. CN112482373A, a new type of spring anchor rod includes an anchor rod, the top of the anchor rod is provided with a filter rod, and the top of the filter rod is provided with a prestressed rod, ...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a new type of spring anchor rod, which solves the problem that when using the fixed rod to fix the tire, since the size of the tire may change, the length of the fixed rod is fixed, which is not easy to occur freely. Changes, resulting in large limitations in the actual use process; when absorbing water through the filter rod, because there is no blocking structure at the edge of the aperture, the sump in it is prone to blockage, and some impurities are easy to enter the inside of the filter rod, affecting the water absorption effect ;Using a sliding rod structure to enhance its gripping force, the structure is complicated, the operation is more troublesome in the actual use process, and the problem is easy to be damaged

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