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Testing system for flexible connecting joint

A flexible connection and testing system technology, applied in the field of mechanical engineering, can solve problems such as fatigue life testing of a single type of flexible connection joint in a single action, and achieve good versatility

Active Publication Date: 2020-11-24
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defect in the prior art that only a single type of flexible joint can be tested for the fatigue life of a single action, and to provide a A test system that completes fatigue life tests of different types of flexible joints in different actions

Method used

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  • Testing system for flexible connecting joint
  • Testing system for flexible connecting joint
  • Testing system for flexible connecting joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] In this embodiment, the flexible connecting joint is a flexible corrugated hose, and the test system can perform a bending test of the flexible corrugated hose, and can measure the fatigue characteristics and fatigue life of the flexible corrugated hose at room temperature under bending alternating loads.

[0081] See Figure 2 to Figure 5 , the test system includes a long-stroke component 1 , a test component and a sensor 3 . The long-stroke assembly 1 includes a vertical column 11 and a bracket 12, and the bracket 12 can move vertically along the column. The test assembly includes a test bench 2 and drive elements. The test bench 2 is located below the bracket 12, and the flexible corrugated hose 51 is carried on the test bench 2. The driving element drives the test bench 2 to rotate and drives one end of the flexible corrugated hose 51 to rotate together with the test bench. The sensor 3 is a torque sensor, which is detachably arranged on the lower surface of the b...

Embodiment 2

[0093] In this embodiment, the flexible connecting joint is a flexible coiled tube, and the test system can perform torsion tests on the flexible coiled tube, and can measure the fatigue characteristics and fatigue life of the flexible coiled tube under torsional alternating load at room temperature.

[0094] See Figure 6 to Figure 8 , the test system includes a long-stroke component 1 , a test component and a sensor 3 . The long-stroke assembly 1 includes a vertical column 11 and a bracket 12, and the bracket 12 can move vertically along the column. The test assembly includes a test bench 2 and drive elements. The test bench 2 is located below the bracket 12, and the flexible coiled tube 52 is arranged on the test bench 2. The driving element drives the test bench 2 to rotate and drives one end of the flexible coiled tube 52 to rotate together with the test bench. The sensor 3 is a torque sensor, which is detachably arranged on the lower surface of the bracket 12 and used ...

Embodiment 3

[0107] In this embodiment, the flexible connecting joint is a flexible bellows, and the test system can perform tension and compression tests on the flexible bellows, and can measure the fatigue characteristics and fatigue life of the flexible bellows at room temperature under alternating tension and compression loads.

[0108] See Figure 9 to Figure 11 , the test system includes a long-stroke component 1 , a test component and a sensor 3 . The long-stroke assembly 1 includes a vertical column 11 and a bracket 12, and the bracket 12 can move vertically along the column. The test assembly includes a test bench 2 and drive elements. The test bench 2 is located below the bracket 12, the flexible bellows 53 is arranged on the test bench 2, and the driving element drives one end of the flexible bellows 53 to reciprocate in the vertical direction. The sensor 3 is a force sensor for sensing the pressure of the flexible bellows 53 . Preferably, the test system also includes a bell...

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Abstract

The invention discloses a testing system for a flexible connecting joint. The testing system comprises a long-stroke assembly, a testing assembly and a sensor. The long-stroke assembly comprises a stand column and a support moving in the vertical direction along the stand column. The testing assembly comprises a testing table and a driving element, the testing table is located below the support and used for bearing the flexible connecting joint, and the driving element is used for driving the flexible connecting joint to move in the specific direction. And the sensor is used for sensing a fatigue characteristic value of the flexible connecting joint generated by the movement in the specific direction when the support moves to the test position. According to the invention, one group of testsystem can be adopted to complete fatigue life tests of different actions of various types of flexible connecting joints.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering, in particular to a testing system for flexible joints. Background technique [0002] With the development of aerospace technology, the passive thermal control methods such as heat pipes and coatings traditionally used by spacecraft can no longer meet the heat dissipation requirements of high heat flow and large heat. Active fluid circuit thermal control technology with its strong heat regulation It has gradually become one of the essential measures to solve the heat dissipation of high heat flux and complex orbiting spacecraft, and has been widely used in manned spaceflight, space station, deep space exploration, satellite and other fields. . [0003] As a key moving part that is widely used in active fluid circuit thermal control systems and has flexible and bendable functions, flexible joints are exposed to extreme environments for a long time. Vacuum environment and medium cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M13/02
CPCG01M13/00G01M13/02
Inventor 周莹张青雷张济民徐涛曹建光
Owner SHANGHAI MARITIME UNIVERSITY