Clamp for mechanical property test of welding of steel-bar truss

Abstract

The invention discloses a clamp for the mechanical property test of welding of a steel-bar truss, belongs to the device for fixing a test member, and particularly relates to a clamp for the shear resistance test of welding points of the steel-bar truss. The clamp is characterized by comprising a main hook, a positioning shaft, a sliding block, an adjusting bolt and a base which are connected, wherein the front end of the main hook is provided with a hook head which is provided with a sample opening groove, and the rear end of the main hook is provided with a positioning shaft sleeve; the positioning shaft connected with the sliding block is arranged in the positioning shaft sleeve in a sliding manner; the sliding block is arranged in a rectangular sliding groove arranged on the base in a sliding manner, and is connected with the adjusting bolt arranged on the side wall of the rectangular sliding groove; and a fixed plate is arranged under the base and is connected with a drawing machine. By utilizing the clamp disclosed by the invention, the test is carried out according to the steps of manufacturing a sample, installing the clamp, clamping the sample, adjusting the main hook, drawing and evaluating yield. The clamp disclosed by the invention has the advantages that the concept is novel, the structure is simple, the use is convenient and reliable, multiple purposes are achieved by one clamp and the application to the mechanical property test of multi-specification trusses can be achieved; and since the sample is manufactured at normal temperature, the operation is simple and convenient, the consumed time is less, the measured data is real, accurate and reliable, the efficiency is high and no energy consumption is caused.

Description

technical field [0001] The invention belongs to a device for fixing test components, in particular to a fixture for testing the shear resistance of welding points of steel bar trusses. Background technique [0002] The welding quality of steel truss products directly affects the performance of the truss. After the truss is welded, the shear resistance of the welding point must be tested, and it can only be put into use after passing the test. After the truss is welded, there is a certain angle between the web reinforcement and the chord reinforcement, and with the change of the height of the truss, the angle is also different, which brings difficulties to the mechanical test of the truss welding point. At present, in the process of detecting the shear force of the welded point, a test steel bar at 180 degrees to the abdominal bar is welded on the chord bar of the detected welded point; The end of the test steel bar connected to the string bar is clamped at the other end of ...

AI Technical Summary

Problems solved by technology

The existing defects are: adding welding test steel bars to the string bars, the secondary welding has a great impact on the shear performance of the measured welding points, and cannot accurately reflect the shear resistance of the measured welding points, resulting in inaccurate measurement data; Welding test steel bars are required for testing, and it must be ensured that the shear resistance of the solder joints of the welded test steel bars is greater than the shear resistance of the measured welding joints; welding equipment is required, energy consumption is long, and the test efficiency is low

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