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A Random Vibration Test Bench

A technology of random vibration and test bench, which is applied in vibration testing, testing of machine/structural components, measuring devices, etc., can solve problems such as insufficient simulation of field operating conditions, and achieve simple structure, flexible adjustment, and wide applicability Effect

Inactive Publication Date: 2018-10-16
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vibration amplitude and vibration frequency of the existing vibration test bench are not random vibration, which cannot fully simulate the field operation conditions

Method used

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  • A Random Vibration Test Bench
  • A Random Vibration Test Bench
  • A Random Vibration Test Bench

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0028] Such as Figure 1-Figure 2 A random vibration test bench is provided as shown, and it is used as a test device for simulating and studying the effect of vibration on the performance of the seed meter as an example, but it is not limited to this application.

[0029] The support 1 is composed of four legs supporting a flat plate as a bearing device for each component.

[0030] The vibrating platform 5 is a square flat plate with springs 10 below its four corners, and is supported on the flat plate of the support 1 by the four springs 10 for bearing vibration and fixing the seed meter. Bolt holes with different diameters are provided at different positions on the surface of the vibrating table...

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Abstract

The invention relates to a random vibration type test bed. A vibration platform is supported on a bracket through springs; shock excitation devices are respectively arranged along X direction, Y direction and Z direction of the vibration platform; a shell of each shock excitation device has a hollow chamber structure; one side of the shell is opened; a fan blade is arranged in the shell; the fan blade is driven by a motor; a spherical roller is arranged in the shell; the shock excitation devices along the X direction and the Y direction respectively act on the vibration platform through force transferring guide rods along the X direction and the Y direction; the shock excitation device along the Z direction is vertically arranged under the vibration platform and directly acts on the vibration platform; the springs along the X direction, the Y direction and the Z direction are used for supplying restoring forces to the vibration platform. The fan blade is rotated for striking the spherical roller, so that the spherical roller can irregularly random strike in each shock excitation device, a random unbalancing inertia force is generated and acts on the vibration platform and the vibration platform can generate random vibration along all-dimensional directions.

Description

technical field [0001] The invention belongs to the technical field of vibration test benches, in particular to a random vibration test bench. Background technique [0002] Mechanized precision sowing is one of the main development directions of sowing equipment this year. It has the advantages of saving good seeds, eliminating artificial thinning, increasing crop yield, and increasing production and income. The stable and reliable seed metering device is the key to realize mechanized precision sowing. The essential. During the operation of the implements in the field, due to the complex and changeable ground conditions, the implements will generate irregular random vibrations during the operation process, which will affect the performance of the seed metering device. [0003] In the research process of seed metering device, indoor seed metering device performance test bench is often used to test its seeding performance. At present, the existing vibrating test bench for se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 王庆杰刘正道李洪文何进牛琪黄幸媛毛宁王树东
Owner CHINA AGRI UNIV
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