Multi-cavity shaft system particle damper

A particle damper and multi-cavity shaft technology, applied in the direction of friction shock absorber, etc., can solve the problems of system dynamic imbalance and achieve the effects of reduced dynamic imbalance, low manufacturing cost and simple structure

Inactive Publication Date: 2016-12-07
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the center of mass of the system is below the axis, and this eccentricity causes the dynamic imbalance of the system, which causes additional work

Method used

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  • Multi-cavity shaft system particle damper
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  • Multi-cavity shaft system particle damper

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Embodiment Construction

[0034] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0035] Figure 1-8 A schematic diagram of the assembly. The embodiment of the present invention is provided with a cylinder 21, and four axial cavities 22 are arranged in the cylinder 21. The opening end of the axial cavities 22 is provided with a fixed cover plate 4, and particles are filled in the axial cavities 22. 3.

[0036] The front end of the fixed cover plate 4 is provided with an end cover 43, the rear end of the fixed cover plate 4 is provided with a shaft 41 matched with the axial cavity 22, and a connecting portion 42 is provided between the end cover 43 and the shaft 41, The connecting portion 42 is provided with external threads.

[0037] The material, particle size and number of particles filled in each axial cavity are the same.

[0038] The axial cavity can be divided into 4-6 sections in the axial direction.

[0039] When the p...

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PUM

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Abstract

The invention discloses a multi-cavity shaft system particle damper and relates to a shaft system of a power device. A cylinder is arranged, and at least two axial cavities are formed in the cylinder. A fixed cover plate is arranged at the opened ends of the axial cavities, and the axial cavities are filled with particles. An end cover is arranged at the front end of the fixed cover plate, shafts matched and connected to the axial cavities are arranged at the back end of the fixed cover plate, a connecting part is arranged between the end cover and the shafts, and an external thread is arranged in the connecting part. An original single shaft hole is separated into a plurality of cavities, and each cavity is filled with particles. As the positions of the particles after modification are balanced relative to the centroids, the dynamic unbalance phenomenon of the particle damper is greatly reduced, so that generation of extra work is not caused or a small part of extra work is generated, and the vibration and noise reduction stability of the particle damper is enhanced. Vibration and noise generated when the shaft system operates are reduced, and meanwhile, extra work generated by dynamic unbalance is reduced, and the vibration and noise reduction stability of the particle damper is improved.

Description

technical field [0001] The invention relates to a shaft system of a power device, in particular to a multi-cavity shaft particle damper. Background technique [0002] Shafting is the key part of the power plant to transmit motion and power. It is developing towards high speed and heavy load. Excessive vibration of the shafting will lead to serious consequences, such as accelerating the wear of engine parts and causing torsional-axial coupling vibration. Increase the noise of the equipment, etc. How to control these vibrations and noises has an important impact on the precision, performance, life of mechanical equipment and the labor protection of operators. [0003] Particle damping has the advantages of significant vibration reduction effect, high temperature resistance, and small changes to the original structure. It is a new passive vibration suppression technology in the field of vibration control. The application of particle damping passive vibration suppression techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/01
CPCF16F7/01
Inventor 肖望强李佳妮潘天龙郝润姿
Owner XIAMEN UNIV
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