An adaptive frequency modulation dynamic vibration absorber

A dynamic vibration absorber and self-adaptive technology, used in springs/shock absorbers, vibration suppression adjustment, mechanical equipment, etc., can solve the problem of simple frequency modulation structure and reliability requirements, complex electromagnetic stiffness of auxiliary equipment, and easy nonlinearity. and other problems, to achieve the effect of flexible layout, high degree of versatility and smooth operation

Inactive Publication Date: 2016-06-01
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, it will bring electromagnetic interference problems and need to provide large power supply equipment. The auxiliary equipment is complex and the electromagnetic stiffness is prone to nonlinearity, so the control is more difficult.
Does not meet the simple structure and reliability requirements of frequency modulation

Method used

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  • An adaptive frequency modulation dynamic vibration absorber
  • An adaptive frequency modulation dynamic vibration absorber
  • An adaptive frequency modulation dynamic vibration absorber

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] as attached figure 1 As shown, it includes stepping motor 1, connecting rod assembly, adjusting mass 6, fixed mass 7, nut 8, stepping motor control system 4, elastic element 3, terminal 5, upper panel 15, lower bottom plate 2, straight line Bearing II16, linear bearing III18, connecting rod pin 17, turntable pin 19, pin nut 12 and casing 14, wherein the connecting rod assembly includes turntable 13, connecting rod 11, guide rod 9 and a linear bearing embedded in the casing I10;

[0027] Its overall connection relationship is as follows: the upper panel 15 and the lower base plate 2 seal the upper and lower open ends of the casing 14 to form a closed cavity, and the stepping motor 1 is fixed on the center of the lower base plate 2 and is located in the closed cavity. The motor control system 4 is fixed on the lower base plate 2 through the elastic ...

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PUM

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Abstract

The invention discloses an adaptive frequency-modulation type dynamic vibration absorber, and belongs to the technical field of vibration noise controlling. The vibration absorber comprises a stepping motor, a rotary table, a connecting rod, a guiding rod, an adjusting mass block, a fixed mass block, a stepping motor controlling system, an elastic element, a wiring terminal, a top plate, a bottom plate, a wiring terminal, a linear bearing, a hinge pin, a nut and a shell, wherein the rotary table, the connecting rod, the guiding rod and the linear bearing inlaid in the shell form a connecting rod system; the turning direction and the step size of the stepping motor are controlled by the stepping motor controlling system; the rotary table is driven to rotate; the rotary table rotates to drive the connecting rod system to work so that the guiding rod upwards moves on the linear bearing; the length of the guiding rod is adjusted; the rigidity of the vibration absorber is changed; and the purpose of modulating frequency is achieved. The change of the revolving speed of a controlled object can be automatically tracked; the frequency of the vibration absorber is automatically modulated; and the vibration absorbing effect of controlled equipment is ensured under variable working conditions or during revolving speed drifting.

Description

technical field [0001] The invention relates to a dynamic vibration absorber, which belongs to the technical field of vibration and noise control. Background technique [0002] At present, vibration and noise reduction has been widely concerned and valued. Many vibration reduction measures have been taken to reduce the vibration and noise of rotating equipment, and a certain control effect has been achieved. However, it is found from the measured data that there are still strong line spectra, and the dynamic Or eliminate the effective means of line spectrum, so it has been extensively studied at home and abroad, and has also been widely used. [0003] In order to achieve the best vibration absorption effect, the dynamic vibration absorber needs to meet the design frequency of the vibration absorber and the frequency of the controlled strong line spectrum. When the design frequency of the vibration absorber deviates from the frequency of the controlled line spectrum, the vibr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/00
Inventor 刘记心李强张针粒余永丰谭海涛周刘彬
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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