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Flexible support adjusting device for resonance rotation bending fatigue testing machine

A flexible support and bending fatigue technology, which is applied in the field of component fatigue test equipment, can solve problems such as insufficient support flexibility and difficult adjustment of fulcrums, and achieve the effect of size expansion and smooth movement

Pending Publication Date: 2021-07-23
天津益普科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the deficiencies in the prior art. It is difficult to adjust the fulcrum of the support adjustment device of the existing resonance bending fatigue testing machine, and the support flexibility is insufficient. A flexible support adjustment device for the resonance rotation bending fatigue testing machine is provided. The device can continuously adjust the fulcrum, and play a role in supporting and clamping the experimental pipeline

Method used

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  • Flexible support adjusting device for resonance rotation bending fatigue testing machine
  • Flexible support adjusting device for resonance rotation bending fatigue testing machine
  • Flexible support adjusting device for resonance rotation bending fatigue testing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A flexible support adjustment device for a resonance rotary bending fatigue testing machine, including a support and clamping assembly, a fulcrum moving assembly and a frame base 19,

[0027] The support and clamping assembly includes a strut mounting cover plate 3, a strut mounting base plate 16 and a center frame guide. The roller guide is installed on the frame base 19, and the center frame guide is fixed on the roller guide. The center frame guide includes Cam follower 4, center frame guide plate seat 13 and center frame guide plate 14, center frame guide plate seat 13 is fixed on the roller guide, and cam follower 4 is installed on both sides of strut installation base plate 16, and cam follows The actuator 4 is in contact with the center frame guide plate 14, and the center frame guide plate 14 is connected with the center frame guide plate seat 13 through a compression spring. The rod mounting cover plate 3 is installed on the top of the strut mounting base plate...

Embodiment 2

[0030] On the basis of Embodiment 1, the number of upper support rods 1 is two, and the line connecting the extension lines of the two upper support rods 1 intersects at the center of the circle of the cross-section of the experimental pipeline.

[0031] A U-shaped groove 22 for adjusting the length of the extension is opened on the upper support rod 1, and the upper support rod 1 is slidably connected with the support rod installation cover 3 through the locking bolt 23, that is, the upper support rod 1 can move along the U-shaped groove. The direction of 22 moves back and forth on the strut installation cover plate 3 to achieve the purpose of being suitable for experimental pipes with different diameters, and the tail end of the upper strut 1 is installed to reduce the friction between the upper strut 1 and the experimental pipe. The upper roller 24 is also provided with an upper brake block 2 for clamping the experimental pipeline on the side of the upper roller.

[0032] T...

Embodiment 3

[0035] On the basis of the second embodiment, an air spring 6 for reducing experimental noise and experimental vibration is provided between the strut installation base plate 16 and the roller guide device, and the number of air springs 6 is two.

[0036] The quantity of cam follower 4 is 4 pairs, is divided into 2 groups and is oppositely arranged on the both sides of strut mounting bottom plate 16 .

[0037] The outer side of the cam follower 4, the center frame guide plate 14 and the compression spring is provided with a center frame guide side plate 5 for protecting the center frame guide plate 14 and the compression spring, and the number of the compression springs is 8 pairs, which are divided into two groups respectively It is arranged between the center frame guide plate seat 13 and the center frame guide plate 14 located on both sides of the strut installation bottom plate 16 .

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PUM

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Abstract

The invention provides a flexible support adjusting device for a resonance rotation bending fatigue testing machine, a roller guide device is mounted on a frame base, a center frame guide device is fixed on the roller guide device, a center frame guide plate seat is fixed on the roller guide device, and cam followers are mounted on two sides of a support rod mounting bottom plate, the cam follower is in contact with the center frame guide plate, the center frame guide plate is connected with the center frame guide plate seat through a compression spring, a lower supporting rod is arranged on the supporting rod mounting bottom plate, the supporting rod mounting cover plate is mounted at the top end of the supporting rod mounting bottom plate, and an upper supporting rod is arranged on the supporting rod mounting cover plate; the oil cylinder fixing device is installed on the frame base and opposite to the roller guiding device, the oil cylinder is installed on the oil cylinder fixing device, an oil cylinder piston rod fixing piece is fixed to the roller guiding device, and a piston rod of the oil cylinder is connected with the roller guiding device through the oil cylinder piston rod fixing piece. The device can continuously adjust the fulcrum and support and clamp the experimental pipeline.

Description

technical field [0001] The invention relates to the technical field of component fatigue testing devices, in particular to a flexible support adjustment device for a resonant rotating bending fatigue testing machine. Background technique [0002] In order to prevent premature failure of marine risers and submarine pipelines under periodic loads, especially for pipeline welded joints and threaded pipe joints, their structures play a role in stress amplification and often fail first, so accurate prediction of these The fatigue life of the structure is very important. Aiming at this, a testing machine for fatigue testing of marine risers and submarine pipelines using the resonance principle has been designed, which has the advantages of high vibration frequency, low power, short test period, and adaptability to full-scale marine risers and submarine pipelines. Before conducting the pipeline bending fatigue test, it is necessary to obtain the zero point (stationary point) of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M7/02G01N3/02G01N3/04
CPCG01M7/027G01M13/00G01N3/02G01N3/04
Inventor 李京鹏王旭彤刘伟
Owner 天津益普科技发展有限公司