Symmetrical cantilever rod type dynamic vibration absorber

A dynamic vibration absorber and cantilever rod technology, applied in non-rotational vibration suppression, screws, nuts and other directions, can solve the problems of installation point impedance, cumbersome frequency modulation process, reduce frequency modulation work and other problems, achieve stable performance, fast frequency modulation, and reduce frequency modulation work. Effect

Pending Publication Date: 2019-11-22
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the cantilever rod type vibration absorber is that the vibration absorption frequency is not only related to the cantilever rod, but also to the impedance of the installation point
Cantilever rod-type vibration absorbers in different installation positions all need frequency modulation, which will make the frequency modulation process very cumbersome and hinder engineering applications
[0003] Therefore, in order to effectively reduce the frequency modulation work, a cantilever rod-type vibration absorber that decouples the vibration-absorbing frequency from the impedance of the installation point is needed. At present, domestic vibration absorbers cannot meet the above requirements.

Method used

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  • Symmetrical cantilever rod type dynamic vibration absorber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, this embodiment is a symmetrical cantilever rod type dynamic vibration absorber, including a cantilever rod 1, a mass block fastener 2, a mass block 3, an upper support fastener 4, an upper support 5, a lower support tight Firmware 6 and lower support 7. Two mass blocks 3 are fixed on the cantilever bar 1 through fasteners 2, and are arranged symmetrically with respect to the upper and lower supports 5 and 7. This structure can make the vibration-absorbing structure symmetrical; the cantilever The rod 1 is clamped between the upper support 5 and the lower support 7; the upper support 5 is connected with the lower support 7 through the fastener 4; the lower support 7 is connected with the equipment through the fastener 6.

[0020] The lower part of the upper support 5 has a rectangular slot, and the top of the lower support 7 has a rectangular slot, and the upper support 5 and the rectangular slot of the lower support 7 cooperate with each other; the middle ...

Embodiment 2

[0032] Embodiment 2, on the basis of Embodiment 1, the material of the mass block 3 can be changed from steel to materials such as copper with higher density. In this way, the size of the mass element can be further reduced, making the shock absorber more compact.

Embodiment 3

[0033] Embodiment 3, on the basis of Embodiment 1 or 2, the mass block 3 can be changed from cylindrical to square or rectangular to meet the requirements of some special frequencies.

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PUM

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Abstract

The invention provides a symmetrical cantilever rod type dynamic vibration absorber. The absorber comprises a cantilever rod, mass block fasteners, mass blocks, upper support fasteners, an upper support, lower support fasteners and a lower support, wherein the two mass blocks are fixed on the cantilever rod through the fasteners, the cantilever rod is clamped between the upper support and the lower support, the two mass blocks are symmetrical with respect to the upper support and the lower support, the upper support is connected with the lower support through the fasteners, and the lower support is connected with a device through the fasteners. The symmetrical cantilever rod type dynamic vibration absorber can effectively reduce frequency modulation work, and has the characteristics of being quick in frequency modulation and stable in performance.

Description

technical field [0001] The invention belongs to the technical field of vibration and noise control, in particular to a symmetrical cantilever rod type dynamic vibration absorber. Background technique [0002] Dynamic vibration absorber is an efficient and reliable method to reduce the line spectrum of mechanical equipment, and it has been gradually applied. There are many existing structural forms of vibration absorbers, such as spring type, cantilever rod type, diaphragm type and so on. Among them, the advantage of the cantilever rod type vibration absorber is that the frequency can be adjusted conveniently and quickly by adjusting the length of the cantilever rod, and the stiffness of the cantilever rod is stable, which can maintain the stable vibration absorption performance. The disadvantage of the cantilever rod type vibration absorber is that the vibration absorption frequency is not only related to the cantilever rod, but also related to the impedance of the installa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/28F16F15/02F16B39/12F16B39/24
CPCF16B39/12F16B39/24F16F15/02F16F15/28
Inventor 张针粒彭旭熊波强磊郭寒贝王强勇李强余永丰
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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