Ribbed bar sleeve extrusion joint and connecting method

Abstract

The invention relates to a ribbed bar sleeve extrusion joint and a connecting method. The ribbed bar sleeve extrusion joint comprises a steel sleeve and ribbed bars at two ends, wherein the two ends of the steel sleeve are respectively sleeved with the end parts of the ribbed bars at two sides, and the extrusion joint is formed by once extruding the steel sleeve with the ribbed bars by an extrusion tool and an extrusion die; two or four symmetrical concave continuous extrusion rings are arranged at the middle part of the steel sleeve, the central axis of the concave continuous extrusion rings is coincident with the axis of the steel sleeve, the ring groove section of the concave continuous extrusion rings along the axis direction of the steel sleeve is an isosceles inverted trapezoid or a rectangle, the cross section perpendicular to the axis direction of the steel sleeve is an oval, and an included angle between bevel edges at two sides of the isosceles inverted trapezoid and the axis direction of the steel sleeve is 60-90 degrees; the inner surface of the steel sleeve, on which the concave continuous extrusion rings are positioned, is closely occlusive with ribs on the surfaces of the two ribbed bars; and the diameter of each ribbed bar is 8-14mm.

Description

technical field [0001] The invention relates to a steel bar joint, in particular to a ribbed steel bar sleeve extrusion joint and a connection method, belonging to the technical field of steel bar mechanical connection. Background technique [0002] First of all, in the existing steel bar mechanical connection technology, the original ribbed steel bar sleeve extrusion connection, the size of the connected steel bar is basically in the range of 16-40mm, there is no small size, and the connection is multi-channel , multiple extrusions (see figure 1 ), and the steel bars at both ends are extruded separately, generally at least in 4 times and 4 times (two on one side). At the same time, there are many problems in the mechanical connection of small-diameter steel bars in prefabricated and prefabricated building structures. Since there is no ideal mechanical connection method, most of them use methods such as lap joints and binding. The solution to the mechanical connection of s...

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Problems solved by technology

[0009] Based on the above-mentioned defects of the prior art, the present invention proposes a ribbed steel bar sleeve extrusion joint and connection method to solve the problem of mechanical connection of small-diameter steel bars, especially for one-time extrusion connection and to prevent extension and deformation of steel bars after extrusion question

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