Test device for tensile fatigue test of concrete filled steel tube members

Abstract

The invention discloses a test device for tensile fatigue testing of steel pipe concrete members, comprising a ball screw, a synchronous belt, a sensor, a servo motor, a foot pad, a support platform, a switch, a single-chip microcomputer, a lower fixture, an upper fixture, and a fixture joint , beams, pin holes, handles, lock nuts, jaws, friction plates and lock holes. The clamp provided by the present invention is provided with a friction plate with a threaded structure and locking holes evenly arranged on the back, which can effectively fix and lock the reinforced concrete test piece to prevent the test piece from being too stretched when the tensile test is carried out. Sliding away from the fixture can effectively improve the progress of the tensile test; the transmission mechanism composed of servo motor, synchronous belt and ball screw is used to change the traditional hydraulic transmission, which has the advantages of good transmission effect, high safety performance, energy saving and environmental protection; Some single-chip microcomputers can effectively carry out electronic measurement, digital display, continuously adjustable test speed and automatic shutdown of component fracture.

Description

technical field [0001] The invention relates to a test device for tensile fatigue test, in particular to a test device for tensile fatigue test of steel pipe concrete members, belonging to the technical field of mechanical test equipment application. Background technique [0002] The test device for fatigue test is a machine that can test fatigue in various ways; the test device for fatigue test is characterized by high load and high frequency, thereby shortening the test time and reducing test cost; the test device for fatigue test is used to measure metal Fatigue characteristics, fatigue life, prefabricated cracks and crack growth tests of alloy materials and their components in tension, compression or tension-compression alternating load at room temperature; the existing hydraulic tensile fatigue test test device has many moving parts and seals, which are expensive to maintain, in addition, their energy costs are high, since the pump has to run continuously and the hydrau...

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Problems solved by technology

[0002] The test device for fatigue test is a machine that can test fatigue in various ways; the test device for fatigue test is characterized by high load and high frequency, thereby shortening the test time and reducing test cost; the test device for fatigue test is used to measure metal Fatigue characteristics, fatigue life, prefabricated cracks and crack growth tests of alloy materials and their components in tension, compression or tension-compression alternating load at room temperature; the existing hydraulic tensile fatigue test test device has many moving parts and seals, which are expensive to maintain, in addition, their energy costs are high, since the pump has to run continuously and the hydraulic oil has to be replaced if it is contaminated, the quality of motion of the transmission is very poor due to the friction of the seals of the transmission, and the current In some tensile fatigue test test devices, when the fixture is stretched, it often occurs that the strength of the fixture is not enough to cause slippage, resulting in the failure of the tensile test to continue smoothly and low test efficiency.

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