A pair of pull bolts for pouring miniature underground comprehensive pipe gallery

Abstract

The invention provides split bolts for pouring of a miniature underground integrated pipe rack. The split bolt for the pouring of the miniature underground integrated pipe rack comprises hollow pipes,a left fastening nut, a left screw, a right fastening nut, a right screw, a left fastening pin, a right fastening pin, a left fastening tip cone, a right fastening tip cone, a left connecting piece and a right connecting piece. When the split bolts are used, an inner framework and an outer framework can be installed simultaneously, the split bolts can be simultaneously inserted into holes on theinner framework and the outer framework, so that the installation of the split bolts are convenient and fast, the split bolts has the characteristics of time-saving and labor-saving, and the time-consuming and labor-consuming defects of the traditional split bolts are overcome.

Description

technical field [0001] The invention relates to the technical field of underground comprehensive pipe gallery, in particular to a tension bolt used for pouring a miniature underground comprehensive pipe gallery. Background technique [0002] The underground comprehensive pipe gallery is a public tunnel built underground in the city for the centralized laying of municipal pipelines such as electricity, communications, radio and television, water supply, and drainage. The underground comprehensive pipe gallery can effectively eliminate the phenomenon of "zipper road", so that technicians can repair, maintain, expand and transform various pipelines in the pipe gallery without repeatedly digging the road surface; at the same time, it greatly reduces the pipeline repair time. [0003] At present, for the miniature underground integrated pipe gallery (with a cross-sectional width and height of about 1.8m×1.8m), the open-cut method is mostly used for construction. [0004] At pres...

AI Technical Summary

Problems solved by technology

However, the use of inner formwork and outer formwork with relatively large length and width also brings about a problem: the tension bolts connecting the inner formwork and the outer formwork need to be installed manually. Usually, the outer formwork is first placed in the predetermined position, and then the tension The outer end of the bolt is fixed on the outer formwork through the steel cage from the inside to the outside, and then the inner formwork is installed on the inner end of the tension bolt. In this way, the outer formwork is installed first and then the inner formwork is installed, which is time-consuming and laborious. There are as many tension bolts as there are holes on the inner formwork for passing through the tension bolts. After so many tension bolts are installed on the outer formwork first, the many holes on the inner formwork must be connected with many holes. One-to-one alignment of the tension bolts allows the tension bolts to be inserted. Obviously, so many one-to-one alignments are time-consuming and labor-intensive

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