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A frequency adjustable cantilever beam vibration absorber

A cantilever beam and cantilever beam technology, applied in the field of cantilever beam vibration absorbers, to achieve the effect of easy adjustment, easy installation and stable work

Active Publication Date: 2015-08-12
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of semi-active vibration absorber can adjust the natural frequency of the vibration absorber in real time online, but it needs an external power supply, controller, sensor and other supporting devices

Method used

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  • A frequency adjustable cantilever beam vibration absorber

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Embodiment Construction

[0016] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0017] combine figure 1 , the present invention is made up of base 1, cantilever beam 2, quality disk 3, fixed nut 4. Threads are processed on the cantilever beam 2, and one side is ground flat to make a scale marked with the natural frequency of the vibration absorber, and the scale values ​​are obtained from actual measurements. A nut 4 is fixed at the zero starting point of the scale, and the top of the base 1 passes through the cantilever beam 2, and the other side is fixed with a nut. The mass disc 3 is fixed by a nut 4 on each side, and the reading is based on the outer surface of the outer fixing nut, and the displayed value is the current natural frequency of the vibration absorber. The working length of the cantilever beam 2 can be adjusted freely, and the operation is simple. The vibration-absorbing body is a cantilever beam structure. Threads are pr...

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Abstract

The invention provides a cantilever beam type vibration absorber with adjustable frequency. The cantilever beam type vibration absorber comprises a base, a cantilever beam and a mass disc, the lower end of the base is fixed to vibration equipment, through holes are formed in the upper end of the base and the mass disc, internal threads are arranged in the through holes, external threads matched with the through holes are arranged on the cantilever beam, the cantilever beam is arranged in the through hole of the base and the through hole of the mass disc through the external threads, fixed nuts are arranged at the two ends of the through hole of the base and fix the position of the cantilever beam and the base, adjusting nuts are arranged at the two ends of the through hole of the mass disc and limit the relative position of the cantilever beam and the mass disc, the adjusting nuts are adjustable, that is, the relative position of the mass disc and the cantilever beam is adjustable. The vibration absorption frequency of the vibration absorber can be flexibly adjusted, and the adjustable scope is wide. Parts are easy to machine and replace. Compared with an electromagnetic type unable vibration absorber and an electrodynamic type tunable vibration absorber, the electromagnetic leakage phenomenon is avoided. The cantilever beam type vibration absorber is simple in structure, stable in work and easy to mount.

Description

technical field [0001] The invention relates to a vibration absorber, specifically a cantilever beam type vibration absorber. Background technique [0002] In engineering practice, marine power equipment inevitably has vibration problems, which have varying degrees of impact on equipment efficiency and life. When the natural frequency of the dynamic vibration absorber is consistent with a certain frequency of the target vibration, it acts as a vibration absorber and reduces the vibration amplitude of the target frequency. [0003] The dynamic shock absorber is composed of a mass unit and an elastic unit. The mass unit is generally a structure with a certain weight. There are many types of elastic units, such as spring type, beam structure type, electromagnetic type, electro-hydraulic type, etc. [0004] Li Haifeng from the Naval University of Engineering used ADAMS to perform dynamic simulation of the cantilever beam absorber, (Li Haifeng Lou Jingjun Zhu Shijian Chen Feng c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/02
Inventor 李玩幽刘子豪朱钰于姝雯朱川王舒楠王博
Owner HARBIN ENG UNIV
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