Special jig and equipment for pull-out test of wallboard pull-joints

Abstract

A wallboard pulling and connection piece anti-drawing test dedicated fixture and device are provided. The dedicated fixture comprises a cylindrical fixture outer cylinder, a locking device and locking device fixing rods; the locking device fixing rods are fixedly connected with the lower end of the locking device; the bottom of the fixture outer cylinder is provided with a cross groove which can be matched with a cross dovetail-shaped part of a wallboard pulling and connection piece; the side wall of the exterior of the fixture outer cylinder is provided with four through holes respectively communicated with grooves at four directions of the cross groove; four screwing threaded rods used for screwing the upper end of the locking device on the wallboard pulling and connection piece are arranged in the four through holes in a penetration manner; four mobile seams are formed below the four through holes respectively; the locking device fixing rods are respectively arranged in the four mobile seams in a penetration manner. The dedicated fixture can be applied to the cross dovetail-shaped wallboard pulling and connection piece, and can make a pulling and connection piece of a sandwich insulation outer wallboard cooperate with a conventional drawing device for an anti-drawing test.

Description

technical field [0001] The invention belongs to the field of pull-out test jigs, and in particular relates to a special jig and equipment for pull-out test of pull-out joints of sandwich thermal insulation external wall panels. Background technique [0002] Sandwich thermal insulation exterior wall panels are the main load-bearing components in the housing industrialization promoted by the state at present, and the pull-out bearing capacity test of the tension joints in the wall panels has just been included in the clear inspection items of the Beijing Municipal Commission of Housing and Urban-Rural Development. The pull-out bearing capacity test of the tie-connector is carried out after the tie-connector is anchored into the concrete inner slab, and the construction of the subsequent process is carried out after passing the inspection. However, since ordinary pulling fixtures are designed for steel bars with a circular cross-section, and the structure and shape of the wallb...

AI Technical Summary

Problems solved by technology

[0005] As can be seen from the two pictures, there are three main reasons why the existing fixture is not available:

[0006] One is the special structure of the pull connector (cross dovetail type), the existing jig for pullout testing is only suitable for cylindrical pull rods, so it cannot be clamped;

[0007] The second is that the height of the pull-joint is very short (about 4cm), and the height of the pull-joint required for the pull-out test to be at least 25cm when the existing jig for pulling out inspection is used in conjunction with the existing drawing equipment such as the drawing oil cylinder. , round steel can be satisfied, but the cross dovetail type tie can not be satisfied;

[0008] The third is that the material of the pull connector is a polymer material. When the pulling force is uneven, the parent body of the pull connector will be damaged but the pull connector is not pulled out, resulting in test failure.

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