Steel reinforcement connecting device

Abstract

The invention provides a steel reinforcement connecting device which comprises a connected steel reinforcement, a passing self-locking sleeve, a positioning self-locking sleeve and a sleeve. The connected steel reinforcement is provided with a thread at one end. An inner hole of the passing self-locking sleeve is penetrating and is provided with an inner thread in threaded fit with the connected steel reinforcement. A section of outer thread of the passing self-locking sleeve is formed on the outer surface at one end of the passing self-locking sleeve. An inner hole of the positioning self-locking sleeve is penetrating and is provided with an inner thread in threaded fit with the steel reinforcement. A section of outer thread of the positioning self-locking sleeve is formed in the outer surface at one end of the positioning self-locking sleeve. The two ends of the sleeve are opened. Inner threads in threaded fit with the outer thread of the passing self-locking sleeve and the outer thread of the positioning self-locking sleeve are separately arranged in opened inner hole in two ends.

Description

technical field [0001] The invention relates to a method and a device for connecting steel bars in building structures. The device is suitable for vertical, horizontal and oblique connections of steel bars in cast-in-place construction and prefabricated buildings. Background technique [0002] The mechanical connection forms of steel bars in existing building structures mainly include: cold extrusion connection and screw connection. [0003] The cold extrusion connection adopts a steel casing with high ductility and moderate strength. By extruding the outer circle of the steel casing, the steel casing is plastically deformed, and the inner hole of the steel casing tightly wraps the ribbed steel bar, thereby realizing the two Rib connection. [0004] Thread connection includes taper thread connection, upsetting straight thread connection and rolling straight thread connection. The two steel bars to be connected are processed by special equipment, and the ends of the two stee...

AI Technical Summary

Problems solved by technology

In the connection construction of this kind of steel bar parts, the steel bar can only move in the axial direction and cannot rotate

Therefore, the overall connection of steel bar parts cannot be realized by using the existing steel bar connection method

For example, prefabricated building technology is being vigorously promoted now. Since the exposed steel bars of the components cannot be rotated, the existing mechanical connection technology of steel bars cannot realize the connection of steel bars. The steel bar connections between components in prefabricated buildings can only be connected with grouting sleeves. However, the cost of grouting sleeve is high, the construction process is cumbersome and complicated, the quality of grouting construction directly affects the quality of the project, and the quality of steel bar connection is difficult to guarantee

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