Hollow grouting anchor rod

Abstract

The invention discloses a hollow grouting anchor, which comprises an integrally formed front-end rod body and a rear-end rod body, an anchor head is arranged at the end of the front-end rod body, and a fixed ring is fixed on the front-end rod body at the rear end of the anchor head. The lower end is evenly provided with sets of fixed plates, and each set of fixed plates is provided with an upper support, and the upper support is fixed on each set of fixed plates through a pin shaft, and each upper support is provided with a chute, and the upper end of the lower support is Fixed on the chute, there is a fixed column on the upper end of the lower support, a fixed nut on the upper end of the fixed column, a rubber washer on the fixed column, a spring pad on the fixed column, and the lower end of the lower support. There are sets of fixed plates on the upper end of the connecting sleeve, and the lower support is fixed on the fixed plate through pin shafts. There are two pull rods on the lower end of the connecting sleeve, and two holes for the pull rods to pass through on the rear end of the rod body. , A grout stopper, a backing plate and a nut are arranged on the rear rod body. The invention has simple structure and reasonable design, can strengthen the fixation of the anchor rod, and can prevent the phenomenon that the anchor rod falls off due to excessive external force to a certain extent.

Description

technical field [0001] The invention relates to an anchor rod for road maintenance, in particular to a hollow grouting anchor rod. Background technique [0002] The anchor rods in the prior art are prone to excessive tension during use, resulting in loosening or falling off of the anchor rods, which poses serious safety hazards especially in the process of road repair in tunnels. Contents of the invention [0003] In order to solve the above problems, the present invention provides a hollow grouting anchor that reinforces the fixing of the anchor and prevents the anchor from loosening. [0004] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0005] The present invention is a hollow grouting anchor rod, which includes an integrally formed front-end rod body and a rear-end rod body. There are sets of fixed plates uniformly arranged at the lower end of the fixed ring, and upper supports are arranged on eac...

AI Technical Summary

Problems solved by technology

[0002] The anchor rods in the prior art are prone to excessive tension during use, resulting in loosening or falling off of the anchor rods, especially in the process of road repair in tunnels, which poses a serious safety hazard

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