Multipoint loading fatigue tester controlled by microcomputer

Abstract

The invention discloses a multipoint loading fatigue tester controlled by a microcomputer, which relates to a material tester and mainly solves the problems of fatigue tests of samples with large volume and high precision requirement in the construction of highways and railway bridges. The tester comprises a host machine, a loading mechanism, a measuring system, a hydraulic system and a control system, wherein the host machine comprises a stand and an attachment on the stand; a moving cross beam is arranged at the upper part of the bearing stand; a bearing cross beam is arranged at the lower part of the bearing stand; the bearing stand is provided with a cushion block; a sample is arranged on the cushion block; a servo loading oil cylinder used as the loading mechanism is arranged between the moving cross beam and the sample; the measuring system is provided with a sensor and a display; the hydraulic system is provided with a hydraulic oil cylinder, an electrohydraulic servo valve, a pipeline and the like; and the control system mainly comprises a microcomputer system. Various test work can be finished by combining the systems and the main machine. The invention can realize a multipoint synchronous pressure-resistant fatigue test and is used for fatigue tests of full-size steel beams, combined beams and concrete beams and pressure-resistant fatigue tests of welding joints, reinforcing steel bars, guy cables and hanger rods.

Description

technical field [0001] The invention relates to a testing machine, in particular to a microcomputer-controlled multi-point loading fatigue testing machine. Background technique [0002] At present, there are many kinds of parts and components used in the construction of highways and railway bridges, with large volume, high precision requirements and many testing items. Therefore, high requirements are placed on the test equipment, and the test machine is required to have a reasonable structure, high rigidity, high force value and Complete functions, especially for some large samples, but there is no fatigue testing machine with large force value, high precision and complete functions. Contents of the invention [0003] Aiming at the urgent needs in bridge construction, the present invention provides a microcomputer-controlled multi-point loading fatigue testing machine through careful design and development, so as to meet the needs of modern bridge construction. [0004] ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of parts and components used in the construction of highways and railway bridges, with large volume, high precision requirements and many testing items. Therefore, high requirements are placed on the test equipment, and the test machine is required to have a reasonable structure, high rigidity, high force value and Complete functions, especially for some large samples, but there is no fatigue testing machine with large force value, high precision and complete functions.

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