Anti-anchoring agent retraction piston, anchor rod and method

Abstract

The invention discloses an anti-anchor agent retreat piston, an anchor rod and a method. The anti-anchor agent retreat piston includes a bolt, a spring buckle arranged on the bolt, two sealing washers and a nut, wherein the spring buckle is arranged on At the tail end of the bolt, a first nut is arranged between the two sealing washers, and a second nut is arranged at the head of the bolt. The piston of the present invention can prevent the anchoring agent from flowing back into the rod and avoid the reduction of the anchoring length; and the spring buckle is adopted to prevent the anchoring agent from flowing back into the rod body, with simple structure and stable and reliable effect; the double-layer seal can effectively seal high-pressure water and Keep the piston rod in the center to prevent the piston from being eccentric in the rod and affect the use; the barb of the spring buckle helps to break the anchoring agent during the stirring process of the anchoring agent and improve the stirring effect of the anchoring agent; the piston sealing structure adopts an isolated double Rubber flat washer, on the one hand, when the size of the inner hole of the anchor rod fluctuates, the piston and the inner hole of the rod can still cooperate well, without affecting the sealing.

Description

technical field [0001] The invention relates to an anti-anchoring agent retreating piston, an anchor rod and a method. Background technique [0002] The existing built-in resin anchoring agent bolt assembly structure such as figure 1 As shown, it includes: rubber plug 11, thrust ring 12, resin anchoring agent 13, rod body 14, sealing piston 15, dish-shaped tray 16, hexagonal nut 17, etc. When anchoring, put the rod body 14 into the anchor hole, Use high-pressure water to push the sealing piston 15 in the rod body to push out the bagged resin anchoring agent 13 from the rod body, and the anchoring agent enters the anchor hole, and then the drill sleeve drives the anchor rod body to rotate and advance until the bottom of the anchor hole. In this process, The resin anchoring agent 13 is crushed and stirred while the anchor rod is advancing. After the anchoring agent is solidified, the nut is tightened to complete the installation of the anchor rod. In the actual installation ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention proposes an anti-anchoring agent retraction piston, anchor rod and method to solve the problem of the reduction in anchorage length caused by the retraction of the piston during the anchoring process of the existing built-in resin anchoring agent anchor rod. small problem

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