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Super-large hanging vibration test fixture structure

A vibration test, suspension technology, used in vibration testing, machine/structural component testing, measuring devices, etc., can solve the problems of motion parameters not maintaining the same value, high fixture resonance frequency, heavy weight, etc., to achieve the installation test. components and tests, high resonance frequency, and weight reduction

Active Publication Date: 2009-10-07
苏州长菱测试技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because when the fixture resonates, the input and output will no longer maintain the same value, and the motion parameters of each point on the fixture will not maintain the same value, which will affect the vibration test
[0003] The installation point of the test piece in the existing super-large suspended vibration test fixture structure is at the top, and the working state of the test piece is in the suspended state. For this type of test piece, the traditional fixture is a fully enclosed frame structure to ensure that the fixture required stiffness, such as figure 1 As shown, the structure is a cage-type truss structure. Due to the large size of the clamp, hollow steel pipes are generally used to reduce the weight, but a higher resonance frequency cannot be obtained. Because it is made of metal materials, it will generate multiple Harmonics, in order to reduce the peak value of multiple harmonics of the resonance frequency, thick-walled hollow steel pipes are required, which increases the weight and cost of the fixture
[0004] In addition, there are such fixtures made of aluminum alloy casting, such as figure 2 As shown, they all belong to the fully enclosed structure, and the cost is higher
[0005] Furthermore, due to the large volume and weight of the cage truss, and the rigidity is difficult to ensure, it is difficult to obtain a higher clamp resonance frequency

Method used

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  • Super-large hanging vibration test fixture structure
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  • Super-large hanging vibration test fixture structure

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1 As can be seen from Figures 3 and 4, the super-large suspended vibration test fixture structure is an integral frame structure 1 welded by hollow steel pipes and steel plates, and the test piece 3 can be installed in the integral frame structure 1. According to the structural characteristics of the test piece itself, a suitable installation method can be selected, and the test piece can be hung in the overall frame structure 1 with common parts such as bolts, which is a known technology and will not be described again. The front and back of the overall frame structure 1 are open, and the left and right columns 10, 11 are welded by trapezoidal ribs 12 and hollow steel, and the upper part is welded by two layers of square frames 13; Structure 1 is fixed on the extension platform 8 of vibrating table 9; ( image 3 , 4 , Parts 8,9 are not drawn in 5).

[0029] The left and right columns 10, 11 are welded by trapezoidal ribs 12 and hollow steel, which means th...

Embodiment 2

[0031] Embodiment 2 see below Image 6 , 7 , 8. The present embodiment is a further extended scheme on the basis of embodiment 1. The frame structure is a main frame 2 with the same structure as the overall frame structure 1 of embodiment 1. The front and rear of the main frame 2 are open The main frame 2 is welded together with a square frame 4 above it, and the square frame 4 is also an integral frame structure welded by hollow steel pipes and steel plates, and a square steel plate 5 is also welded on the top of the square frame 4 , in the center of the square steel plate 5, a flange 6 with a rectangular seam is fixed with bolts, and between the two sides of the square frame 4 and the main frame 2, three parallel triangular ribs 7 are respectively welded; The test piece 3 can be suspended in the integral frame structure 1 by the spigot flange 6 and the bolt. Due to the structure of the test piece 3 itself, the test piece 3 can be horizontally rotated 360° along the vertical...

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Abstract

The invention relates to a super-large hanging vibration test fixture structure, belonging to the field of mechanical test fixtures; an integral frame structure is welded by profile steel and steel plates, and a test piece can be installed inside the integral frame structure; the front and the back of the integral frame structure are opened, a left upright post and a right upright post of the integral frame structure are welded by trapezoid rib plates and hollow steel, and the upper part of the integral frame structure is welded by cubical frames and three vertical rib plates; the integral frame structure can be fixed on the extended table top of a vibrating table by the left upright post and the right upright post; the extended table of the a testing table can drive the frame structure and the test piece to conduct vibration testing; the test piece can rotate for 360 degrees in the frame; and the fixture is an open structure and is characterized by small volume, light weight, good rigidity and higher resonant frequency.

Description

technical field [0001] The invention relates to a super-large suspended vibration test fixture structure, which belongs to the field of mechanical test fixtures. Background technique [0002] The function of the test fixture is to transmit the motion and energy of the vibrating table to the test piece. In the test, it is hoped that the moving coil will transmit the vibration energy to the test piece through the fixture without distortion. This requires the rigidity of the fixture to be as large as possible. Because when the fixture resonates, the input and output will no longer maintain the same value, and the motion parameters of each point on the fixture will not maintain the same value, which will affect the vibration test. [0003] The installation point of the test piece in the existing super-large suspended vibration test fixture structure is at the top, and the working state of the test piece is in the suspended state. For this type of test piece, the traditional fix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
Inventor 陈俊吴国雄胡雁闽
Owner 苏州长菱测试技术有限公司
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