Expansion shell type anchoring head and anchor rod with the same

Abstract

The invention discloses an expansion shell type anchoring head, which comprises an expansion shell inner wedge and two expansion shell clamping pieces, wherein the expansion shell inner wedge is formed by a rod body connecting section and a sliding groove section, and the two expansion shell clamping pieces are matched with the sliding groove section. The two expansion shell clamping pieces are fixed on the expansion shell inner wedge through an inverted U-shaped antiskid clamp. The two clamping arms of the inverted U-shaped antiskid clamp are arranged along the axial direction of the expansion shell inner wedge and are respectively fixed on the two expansion shell clamping pieces. The invention additionally discloses an anchor rod which comprises an anchoring head and an anchor rod body, wherein the structure of the anchoring head is the same as the structure. By using the inverted U-shaped antiskid clamp to fix the two expansion shell clamping pieces on the expansion shell inner wedge, since the tensioning force of the inverted U-shaped antiskid clamp is small, the two expansion shell clamping pieces can easily break through the limitation of the inverted U-shaped antiskid clamp to slide along the expansion shell inner wedge and thereby the anchoring head is expanded.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering anchoring support, and in particular relates to a shell-expanding anchor head and an anchor rod. Background technique [0002] The existing expansion shell anchor head mainly has the following two forms: [0003] 1. The structure of the expansion shell anchor head does not have the grouting function. It cooperates with the solid anchor body to form the expansion shell solid anchor. Therefore, it is mostly used in temporary support. Anchor rods as disclosed in US Pat. [0004] 2. The shell-expanding anchor head is designed to have the functions of anchoring and grouting. Chinese patent 200310108547.5 discloses a shell-expanding anchor rod, which is composed of an expanding shell-type anchoring head, an anchor rod body, a support plate, a fastening nut, a washer, and a connecting pipe. It consists of two expansion shell clips, the expansion shell clips are fixed in the opening g...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a shell-expanding anchor head, which solves the problem that the existing anchor head is difficult to open

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