Novel construction steel bar sleeve

Abstract

The invention discloses a novel construction steel bar sleeve. The novel construction steel bar sleeve comprises a sleeve body, a steel bar mechanical connecting hole, a slurry outlet and a grouting opening, the whole sleeve body is of a cylindrical structure, and the outer surface of the sleeve body is of a concave-convex structure; the steel bar mechanical connecting hole is formed in the left end of the sleeve body, and the steel bar mechanical connecting hole is of a through hole structure; the slurry outlet is formed in the left side of the upper end of the sleeve body; and the grouting opening is formed in the right side of the upper end of the sleeve body, the steel bar mechanical connecting hole is a threaded hole which is connected with the sleeve body after a steel bar is threaded, and the steel bar mechanical connecting hole is formed in the left end of the sleeve body in an embedded mode. The novel construction steel bar sleeve is manufactured by machining high-quality carbon structural steel, the performance of raw materials is improved through hot forging and pressing, the plane precision is guaranteed through numerical control cutting, the situation that the material properties are different due to uneven heat treatment is prevented through cooling liquid drilling, and finally rust-proof treatment is carried out, so that the novel construction steel bar sleeve is more stable, more reliable, better in performance and higher in machining size precision.

Description

technical field [0001] The invention relates to the technical field related to steel bar connection of prefabricated building PC components, in particular to a novel building steel bar sleeve. Background technique [0002] The prefabricated concrete structure generally adopts the steel grouting sleeve connection technology, that is, the high-strength circular sleeve with a concave-convex structure in the inner cavity is used, and the steel bars reserved in the component are inserted from both ends, and the grouting material is injected through the grouting machine. The battle steps are hardened into a whole by the grouting material. The performance of the sleeve grout is the main guarantee for the reliability of the steel sleeve connection, and its performance plays a vital role in the structural safety and durability. Its value lies in the fact that the grouting sleeve is applied to each connection node of the steel bar, and the grouting effect is affected by the grouting ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of construction reinforcement sleeve to solve the problems that most of the grouting sleeves proposed in the above background technology are not strong enough, the plane precision is not enough, and the material properties are not stable.

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