Multi-component clamp bending fatigue test device based on circular motion

Abstract

The invention discloses a multi-component hoop bending fatigue testing device based on circular motion, which relates to the application field of hoop testing and includes a displacement module, a driving module, a transmission module, a guiding module and an experiment module. The structure of the present invention is simple and reasonable. The transmission module controls the reverse rotation of two adjacent chucks, and cooperates with the guide module to realize the continuous change of the movement track of the clamp test assembly in the chuck group; the clamp test assembly can be turned over on the platform fixing plate Realize the contact or disengagement with the resistance part under the action, and then realize the controllability of the resistance bending moment condition; during the test, one end of the clamp test component contacts the resistance part through the displacement module, so that multiple groups of clamps can be tested simultaneously in the moving state Bending fatigue properties of hoop assemblies. Not only the required energy is greatly reduced, but also the clamp test component can continuously change the direction of the bending moment along with the movement, realizing the effect of simulating the complex working environment of the clamp component, thereby improving the reliability of the test and having strong practicability.

Description

technical field [0001] The invention relates to the application field of hoop testing, in particular to a multi-component hoop bending fatigue testing device based on circular motion. Background technique [0002] With the improvement of aircraft performance and pipeline design level in recent years, the reliability performance requirements of the system pipeline connection clamps are also increasing, thus giving birth to many clamp reliability performance testing equipment. [0003] At present, the conventional bending fatigue test method of the clamp is: the clamp and its components are pressed as follows figure 1 Installed on the fixture as shown, apply the minimum tightening torque, rigidly fix one end of the conduit 07, and apply 80% of the rated bending moment to the lug 011 at the other end. The inside of the joint reaches the maximum working pressure, and the working medium is aviation kerosene. Apply 100,000 offset cycles to the test assembly, one offset cycle inc...

AI Technical Summary

Problems solved by technology

[0004] However, the conventional clamp testing device fixes one end of the clamp assembly, and loads the other end with a reciprocating bending moment force, which not only increases the energy consumption sharply, but also fixes the direction of the bending moment, which is far from the actual force environment of the clamp on site.

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