CN103047335A - Inertial resistance type vibration absorber - Google Patents
Inertial resistance type vibration absorber Download PDFInfo
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- CN103047335A CN103047335A CN2012105785733A CN201210578573A CN103047335A CN 103047335 A CN103047335 A CN 103047335A CN 2012105785733 A CN2012105785733 A CN 2012105785733A CN 201210578573 A CN201210578573 A CN 201210578573A CN 103047335 A CN103047335 A CN 103047335A
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Abstract
The invention relates to an inertial resistance type vibration absorber. The inertial resistance type vibration absorber comprises a sealed body, a piston mass block, two springs and an antifriction sealing device, the sealing body is a sealed cavity composed of an upper wall, a lower wall and a side wall, the upper surface and the lower surface of the piston mass block are of a symmetrical downward concave structure, axial damping holes are processed at the bottom of the downward concave structure, the piston mass block is hermetically connected with the side wall of the sealed body via the antifriction sealing device, the center of each of the upper side and the lower side of the piston mass block is connected with one spring, the other ends of the two springs are connected with the upper wall and the lower wall respectively, the two springs support the piston mass block in the middle of the sealed body, the piston mass block divides the sealed body into an upper cavity and a lower cavity, the damping holes of the piston mass block penetrate through the upper cavity and the lower cavity, and the liquid level forms an air chamber between the upper cavity and the upper wall after oil liquid fully fills the lower cavity. The inertial resistance type vibration absorber is capable of converting main vibration energy of equipment subjected to vibration reduction into kinetic energy of an inertial element of the inertial resistance type vibration absorber, and utilizes a self damping system to achieve substantial vibration reduction of the equipment and a system.
Description
Technical field
Invention relates to mechanical vibration vibration damping application, particularly relates to a kind ofly being used to hinder the formula bump leveller for the vibration damping absorbing.
Background technique
A main purpose of research vibration is controlled vibration exactly, enables to satisfy the performance index requirement of expection.What vibration was useful with harmful divides, and people utilize vibration to reach the purpose of expection sometimes, raise the efficiency as utilizing resonance, utilize vibration principle to make various vibrating machines etc.; And in more situation, vibration is harmful to, and it shortens the working life of product and structure, causes product and structural failure.Therefore, must reduce nuisance vibration, until eliminate vibration damping problem that Here it is as far as possible.In a broad sense, vibration control should comprise above-mentioned two aspects, but the vibration control of usually saying refers to the latter.
It is insoluble that the vibration problem of the system of complexity or structure is only depended on design, and when undesirable vibration occurring, except designing, an important and effective method is taked vibration reducing measure exactly again.For reducing nuisance vibration, people have carried out a large amount of research work in each engineering field, comprise the aspect such as dynamics, vibration reducing measure of vibration source, transmission way, system or structure.Wherein the theory analysis of glissando and realization account for very consequence, and classical vibration reducing measure mainly comprises absorbing, vibration isolation and the resistance three parts that shake.Classical vibration reducing measure does not change to original structure, product or system and is called as the passive vibration control technology.
The present invention is exactly the passive type dynamic vibration absorber, dynamic vibration absorber is because it is simple in structure, the structure that the blanketing frequency range is less effectively again and the vibration of equipment, therefore used widely in engineering practice, the dynamic absorber technology has become important means and the effective measures of implementing vibration control.
Absorbing is the abbreviation of dynamic absorber, namely adopt additional subtense angle (being called dynamic vibration absorber-dynamic vibration absorber hereinafter to be referred as DVA) change to need the structure of vibration damping or the vibrational state of system's (being referred to as main system), the change of this vibrational state is the realization of redistributing by main system affix subtense angle after vibration energy, and namely vibrational energy is transferred on the additional subtense angle.
At automotive field, the NVH that automobile is good (Noise noise, Vibration vibration and Harshness sound vibration roughness) performance becomes the important indicator that the client estimates for vehicle.Cause the resonance that major reason is component of Vehicular vibration, the simultaneously resonance of component even can cause the earlier period damage of vehicle component reduces the driving safety of vehicle.In the bridge field, because the existence of resonance, the lighter causes shorten the working life of bridge, and the phenomenon of bridge collapse appears in severe one; In electromechanical engineering field, mechanical transmission fields, vibration has all caused the impacts such as life of product minimizing, system reliability reduction.
Summary of the invention
In view of this, the invention provides a kind of formula bump leveller of being used to hinder, can utilize the damped system of self with being converted into the kinetic energy of being used to hinder formula vibration damper inertance element by the main vibrational energy of dampening apparatus, be converted into interior energy, realize the vibration damping significantly to equipment and system.
Be used to hinder the formula dynamic vibration absorber, comprise seal, piston mass piece, spring and seal arrangement, wherein, seal is comprised of upper wall, lower wall and sidewall, and upper wall and lower wall are welded on respectively the seal that forms sealing on up and down two end faces of sidewall; The internal face Spielpassung of the profile of piston mass piece and sidewall, the piston mass piece circumferentially have a circular groove, mounting sealing device in the circular groove, up and down two surfaces of piston mass piece are symmetrical concave configuration, are processed with axial damping hole on the bottom of concave configuration;
Its integrated connection closes: the piston mass piece is realized being tightly connected by the sidewall of seal arrangement and seal, the center of piston mass piece upper and lower surface respectively connects a spring, the other end of two springs connects respectively upper wall and lower wall, two springs are supported on the piston mass piece at the middle part of seal, the piston mass piece is divided into epicoele and cavity of resorption with seal, damping hole on the piston mass piece runs through epicoele and cavity of resorption, and liquid level formed an air chamber after fluid was full of cavity of resorption between epicoele and upper wall.
Beneficial effect:
(1) the application compares with the conventional hydraulic vibration damper, does not have motive sealing, and mechanical structure is simple, reliability is high, only needs single-point to connect, and arrangement space is flexible, can arrange in limited space, can be arranged in by any position of vibration damping object, only need that axis is parallel with extrinsic motivated to be got final product.
(2) the application compares with the conventional hydraulic vibration damper, not only can realize the vibration damping (such as automotive suspension) between the relative movement part, and can carry out vibration damping to monomer structure (large-scale steelframe etc.), in the situation of good parameter matching, the damping rate that vibrates for the arrowband can reach 80%.Adopt nonlinear spring, can also be to the effective vibration damping of wide-band vibration.
Description of drawings
Fig. 1 is overall structure schematic representation of the present invention;
Wherein, 1-air chamber, 2-upper wall, 3-sidewall, 4-epicoele, 5-piston mass piece, 6-cavity of resorption, 7-lower wall, 8-damping hole, 9-antifriction seal arrangement, 10-spring.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, describe the present invention.
As shown in Figure 1, the invention provides a kind of formula dynamic vibration absorber of being used to hinder, comprise seal, piston mass piece 5, spring 10 and seal arrangement 9, wherein, seal is comprised of upper wall 2, lower wall 7 and sidewall 3, and upper wall 2 and lower wall 7 are welded on respectively the seal that forms sealing on up and down two end faces of sidewall 3; The internal face Spielpassung of the profile of piston mass piece 5 and sidewall 3, piston mass piece 5 circumferentially have a circular groove, mounting sealing device 9 in the circular groove, up and down two surfaces of piston mass piece 5 are symmetrical concave configuration, be processed with axial damping hole 8 on the bottom of concave configuration, damping hole 8 edge on the plane of concave configuration bottom is circumferentially uniform;
Its integrated connection closes: piston mass piece 5 is realized being tightly connected by the sidewall of seal arrangement and seal, the center of piston mass piece 5 upper and lower surfaces respectively connects a spring 10, the other end of two springs 10 connects respectively upper wall 2 and lower wall 7, two springs 10 are supported on piston mass piece 5 at the middle part of seal, piston mass piece 5 is divided into epicoele 4 and cavity of resorption 6 with seal, damping hole 8 on the piston mass piece 5 runs through epicoele 4 and cavity of resorption 6, and fluid is full of cavity of resorption 6 rear liquid levels and forms an air chamber 1 between epicoele 4 and upper wall 2.
Wherein, seal arrangement is the little seal ring of frictional force.
Working principle: be used to hinder that the lower wall 7 of formula vibration damper or sidewall 3 are fixed on the equipment that needs vibration damping or above the mechanism, the axial direction of being used to hinder the formula vibration damper will parallel installation with direction of vibration.According to detecting by the main frequency f of the oscillation power of dampening apparatus or mechanism spectrum
1, suitably adjust rigidity k and mass block m, so that be used to hinder the absorbing frequency of formula vibration damper
Equal f
1, the piston mass piece m that is used to like this to hinder the formula bump leveller can resonate under this frequency, absorbs most vibrational energies.The change of this vibrational state is the realization of redistributing by main system affix subtense angle after vibration energy, and namely vibrational energy is transferred to additional subtense angle and is used to hinder on the formula vibration damper.If had a plurality of vibration peak f by dampening apparatus
1, f
2, f
3... Deng, can adopt the mode of being used to hinder the parallel connection of formula vibration damping of a plurality of different absorbing frequencies to be installed in and be realized vibration damping on the dampening apparatus.Require according to vibration damping is different: amplitude vibration damping or acceleration vibration damping, can mate different damping characteristics and realize.
The specific works process is after being used to hinder the formula bump leveller and resonating, and piston mass piece 5 can along with the axis up-down vibration, can be divided into up stroke and the down stroke of piston mass piece 5 in the vibration processes.
The up stroke process: the volume of epicoele 4 reduces, and oil pressure raises, and the damping hole 8 that the fluid in the epicoele 4 is flowed through on the piston enters cavity of resorption 6, and the throttling of 8 pairs of fluid of damping hole has formed the damping force to system, and air chamber 1 has played the effect that prevents pocketed oil.When the spring 10 that links to each other with piston mass piece 5 in addition vibrated along with axis is past at piston mass piece 5, spring 10 had also played the effect of impacting that relaxes.So a part of vibrational energy is converted into heat transferred fluid by damping, passes to atmosphere by wall at last.
The down stroke process: the volume of cavity of resorption 6 reduces, and oil pressure raises, and the damping hole 8 that the fluid in the cavity of resorption 6 is flowed through on the piston enters epicoele 4, and the throttling of 8 pairs of fluid of damping hole has formed the damping force to system.During along with the axis up-down vibration, spring 10 has also played the effect of impacting that relaxes to the spring 10 that links to each other with the piston mass piece in addition at piston mass piece 5.So a part of vibrational energy is converted into heat transferred fluid by damping, passes to atmosphere by wall at last.
In sum, more than be preferred embodiment of the present invention only, be not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. be used to hinder the formula dynamic vibration absorber, it is characterized in that, comprise seal, piston mass piece, spring and antifriction seal arrangement, wherein, seal is comprised of upper wall, lower wall and sidewall, and upper wall and lower wall are welded on respectively the seal that forms sealing on up and down two end faces of sidewall; The internal face Spielpassung of the profile of piston mass piece and sidewall, the piston mass piece circumferentially have a circular groove, the antifriction seal arrangement is installed in the circular groove, and up and down two surfaces of piston mass piece are symmetrical concave configuration, are processed with axial damping hole on the bottom of concave configuration;
Its integrated connection closes: the piston mass piece is realized being tightly connected by the sidewall of antifriction seal arrangement and seal, the center of piston mass piece upper and lower surface respectively connects a spring, the other end of two springs connects respectively upper wall and lower wall, two springs are supported on the piston mass piece at the middle part of seal, the piston mass piece is divided into epicoele and cavity of resorption with seal, damping hole on the piston mass piece runs through epicoele and cavity of resorption, and liquid level formed an air chamber after fluid was full of cavity of resorption between epicoele and upper wall.
2. as claimed in claim 1ly be used to hinder the formula dynamic vibration absorber, it is characterized in that, describedly be used to hinder the formula vibration damper and be fixed on the equipment or mechanism that needs vibration damping by its lower wall or sidewall, the axial direction of being used to hinder the formula vibration damper is parallel with direction of vibration.
3. as claimed in claim 1 or 2ly be used to hinder the formula dynamic vibration absorber, it is characterized in that, the damping hole resistance on the described piston mass piece on the plane of concave configuration bottom along circumferentially uniform.
4. as claimed in claim 3ly be used to hinder the formula dynamic vibration absorber, it is characterized in that, according to detecting by the main frequency f of the oscillation power of dampening apparatus or mechanism spectrum
1, suitably adjust rigidity k and mass block m, so that be used to hinder the absorbing frequency of formula vibration damper
Equal f
1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105785733A CN103047335A (en) | 2012-12-26 | 2012-12-26 | Inertial resistance type vibration absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105785733A CN103047335A (en) | 2012-12-26 | 2012-12-26 | Inertial resistance type vibration absorber |
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| CN103047335A true CN103047335A (en) | 2013-04-17 |
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| CN2012105785733A Pending CN103047335A (en) | 2012-12-26 | 2012-12-26 | Inertial resistance type vibration absorber |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764218A (en) * | 2017-02-14 | 2017-05-31 | 徐工集团工程机械有限公司 | Pipeline connecting device, pipe-line system and engineering machinery |
| CN106948256A (en) * | 2017-04-26 | 2017-07-14 | 中铁大桥科学研究院有限公司 | A kind of ultralow frequency liquid quality tuned damper |
| CN106988163A (en) * | 2017-04-26 | 2017-07-28 | 中铁大桥科学研究院有限公司 | It is floating ballast bed that a kind of full frequency band subtracts vibration isolation |
| CN107477139A (en) * | 2017-09-28 | 2017-12-15 | 常州大学 | A kind of transducer available for robot vibration damping |
| CN110043602A (en) * | 2018-01-17 | 2019-07-23 | 西门子歌美飒可再生能源公司 | Wind turbine |
| CN112272594A (en) * | 2018-06-12 | 2021-01-26 | 伊斯卡有限公司 | Tool holder with integrally formed anti-vibration assembly and cutting tool having the same |
Citations (6)
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| GB539720A (en) * | 1940-05-11 | 1941-09-22 | Armstrong Siddeley Motors Ltd | Improvements relating to the damping of motor-vehicle suspensions |
| FR1261192A (en) * | 1959-09-09 | 1961-05-19 | Dynamic air spring damper | |
| GB1367285A (en) * | 1971-08-26 | 1974-09-18 | Girling Ltd | Inertia dampers |
| SU1341411A1 (en) * | 1983-01-11 | 1987-09-30 | Центр Методологии Изобретательства | Vibration damper |
| WO1994002755A1 (en) * | 1992-07-23 | 1994-02-03 | Kaufmann, Peter | Oscillation damper |
| CN102619921A (en) * | 2012-04-13 | 2012-08-01 | 江苏大学 | Shock absorber device with shunt-wound inertial container and damping |
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2012
- 2012-12-26 CN CN2012105785733A patent/CN103047335A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB539720A (en) * | 1940-05-11 | 1941-09-22 | Armstrong Siddeley Motors Ltd | Improvements relating to the damping of motor-vehicle suspensions |
| FR1261192A (en) * | 1959-09-09 | 1961-05-19 | Dynamic air spring damper | |
| GB1367285A (en) * | 1971-08-26 | 1974-09-18 | Girling Ltd | Inertia dampers |
| SU1341411A1 (en) * | 1983-01-11 | 1987-09-30 | Центр Методологии Изобретательства | Vibration damper |
| WO1994002755A1 (en) * | 1992-07-23 | 1994-02-03 | Kaufmann, Peter | Oscillation damper |
| CN102619921A (en) * | 2012-04-13 | 2012-08-01 | 江苏大学 | Shock absorber device with shunt-wound inertial container and damping |
Non-Patent Citations (1)
| Title |
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| 刘延柱: "《趣味振动力学》", 31 March 2012, 北京：高等教育出版社, article "动力吸振器", pages: 121 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764218A (en) * | 2017-02-14 | 2017-05-31 | 徐工集团工程机械有限公司 | Pipeline connecting device, pipe-line system and engineering machinery |
| CN106948256A (en) * | 2017-04-26 | 2017-07-14 | 中铁大桥科学研究院有限公司 | A kind of ultralow frequency liquid quality tuned damper |
| CN106988163A (en) * | 2017-04-26 | 2017-07-28 | 中铁大桥科学研究院有限公司 | It is floating ballast bed that a kind of full frequency band subtracts vibration isolation |
| CN106948256B (en) * | 2017-04-26 | 2019-06-21 | 中铁大桥科学研究院有限公司 | A kind of ultralow frequency liquid quality tuned damper and design method |
| CN107477139A (en) * | 2017-09-28 | 2017-12-15 | 常州大学 | A kind of transducer available for robot vibration damping |
| CN110043602A (en) * | 2018-01-17 | 2019-07-23 | 西门子歌美飒可再生能源公司 | Wind turbine |
| CN110043602B (en) * | 2018-01-17 | 2022-05-03 | 西门子歌美飒可再生能源公司 | Wind turbine |
| US11353006B2 (en) | 2018-01-17 | 2022-06-07 | Siemens Gamesa Renewable Energy A/S | Wind turbine |
| CN112272594A (en) * | 2018-06-12 | 2021-01-26 | 伊斯卡有限公司 | Tool holder with integrally formed anti-vibration assembly and cutting tool having the same |
| CN112272594B (en) * | 2018-06-12 | 2024-04-02 | 伊斯卡有限公司 | Tool holder with integrated vibration-resistant assembly and cutting tool with tool holder |
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Application publication date: 20130417 |