CN103047332A - Vibration control device with vibration isolation and absorption functions - Google Patents
Vibration control device with vibration isolation and absorption functions Download PDFInfo
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- CN103047332A CN103047332A CN2012105888477A CN201210588847A CN103047332A CN 103047332 A CN103047332 A CN 103047332A CN 2012105888477 A CN2012105888477 A CN 2012105888477A CN 201210588847 A CN201210588847 A CN 201210588847A CN 103047332 A CN103047332 A CN 103047332A
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Abstract
The invention provides a novel vibration control device with vibration isolation and absorption functions. The novel vibration control device comprises an outer corrugated pipe, an inner corrugated pipe, an upper end plate, a lower end plate and a mass block; the upper end plate and the lower end plate are in bolted connection with mechanical equipment and an installation base by the aid of through holes; the outer corrugated pipe is fixedly connected with the upper end plate and the lower end plate in a welded manner and realizes effects of a vibration isolator; and two ends of the inner corrugated pipe are respectively fixedly connected with an inner cover and the mass block, and the axial rigidity of the inner corrugated pipe and the mass of the mass block are adjusted, so that effects of a vibration absorber can be realized. Accordingly, the novel vibration control device has the vibration isolation and power vibration absorption functions, has the advantage of compact structure, and can easily solve the problem of difficulty in controlling vibration of mechanical equipment which is arranged at a small spatial position and is incapable of being simultaneously provided with vibration isolation and absorption devices.
Description
Technical field
The present invention relates to a kind of vibration control apparatus that possesses simultaneously vibration isolation and shock sucking function, belong to vibration isolation, absorbing technical field.
Background technique
In engineering field and academia, vibration isolator and bump leveller are seen as two kinds of different vibration control apparatus always.The working mechanism of vibration isolator is to reduce vibration source and by the Dynamic Coupling between the vibration isolation object, reduce that bad vibration passes to protected object or spread out of from object and reach the purpose that separating vibration transmits, have in the application: be used for the rubber vibration isolator of internal-combustion engine bearing, the air bag vibration isolator that the Marine mechanical equipment vibration isolation is used etc.; And the principle of bump leveller is to utilize it to resonate, and makes elastic restoring force on the bump leveller spring can balance excitation force on the machinery, thereby suppresses the vibration of machinery, such as the bifilar pendulum type bump leveller at helicopter hub place etc.
Although the transmission of conventional vibration insulation structure energy separating vibration, it does not possess the function of dynamic absorber.In fact, both there had been the vibration isolation demand in the heavy duty equipment of part one working frequency, also had the requirement of dynamic absorber, and it is because the spatial position is narrow and small, has installed after the vibration isolator, does not have redundant space that other powered shock absorption device is installed; The consequence that causes thus is that these mechanical equipment vibrations are still very violent, affects equipment work and production safety.
The vibration isolating that the bellow-type mixed medium vibration isolating and absorbing unit of patent publication No. 101701615A provides that a kind of bearing capacity is large, natural frequency is low, simple in structure, anti-vibration performance can free adjusting; Yet this vibration isolating only can hinder the vibratory response transmission of machinery, and the dynamic absorber function can not be provided.
Summary of the invention
The object of the invention is to: the problem that vibration isolator and bump leveller can't be installed simultaneously for solving the narrow and small heavy duty equipment in spatial position, the invention provides a kind of compact structure that can be applicable to this kind equipment, have the vibration control apparatus of vibration isolation shock sucking function concurrently, can effectively control the vibratory response of machinery.
A kind of vibration control apparatus that has vibration isolation, shock sucking function concurrently is characterized in that: be comprised of vibration isolation unit and absorbing unit; Wherein vibration isolation unit is comprised of upper head plate, lower end sheet, the outward corrugated tube that is connected between upper head plate and the lower end sheet; Wherein the absorbing unit comprises the inner corrugated pipe that is connected in the inner cap lower end and the mass block that is connected in the inner corrugated pipe lower end; Leave the mass block movement clearance between above-mentioned mass block and the lower end sheet; The natural frequency of above-mentioned vibration isolation unit should be less than 0.707 times of the frequency of okperation of the contained machinery of upper head plate (by the vibration transmissibility amplitude-versus-frequency curve as can be known, the ratio that only has machine work frequency and vibrating isolation system natural frequency greater than the time, the effect of vibration isolator competence exertion; See " mechanical vibration and the impact " the 42nd page of the works such as Hu Haiyan for details, aviation industry publishing house publishes); Different according to the absorbing object, the natural frequency of above-mentioned absorbing unit can be identical with the natural frequency of vibration isolation unit or identical with the frequency of okperation of machinery.
Above-mentioned outward corrugated tube and upper and lower end plate are welded to connect, and described inner corrugated pipe and inner cap are welded to connect; Described inner cap is fixedly connected with by hexagon socket head cap screw with upper head plate, and this structure is convenient to maintenance and the installation of vibration isolation unit and damper unit.
The first is improved structure: the described vibration control apparatus that has vibration isolation, shock sucking function concurrently, it is characterized in that: the mass block of above-mentioned absorbing unit is comprised of damping cavity and the damping particles that is loaded in the damping cavity, this structure itself can provide again necessary damping both as the bump leveller quality; During vibration, bump and rub between the damping particles and between damping particles and the damping cavity wall, absorb the also vibrational energy of loss bump leveller mass block, prolong the working life of inner corrugated pipe.Described damping particles can be shot, copper ball and ceramic particle etc.
The second improves structure: the described vibration control apparatus that has vibration isolation, shock sucking function concurrently is characterized in that: above-mentioned absorbing unit also comprises the damping cavity that is fixed between inner cap and the inner corrugated pipe, in the damping cavity damping particles is housed.Bump and rub between these particles and between damping particles and the damping cavity wall, can absorb and the loss upper head plate vibrational energy of machinery namely, the vibration amplitude when suppressing machinery across resonance frequency.
Working principle of the present invention is: the vibrational energy that machinery produces is delivered on the outward corrugated tube by upper and lower end plate, and outward corrugated tube is stressed and produce deformation, provides isolation mounting required elastic restoring force, plays vibration isolator; And inner corrugated pipe is connected by inner cap and upper head plate and machinery, choose reasonable inner corrugated pipe axial rigidity and mass block quality make it satisfy the requirement of dynamic vibration absorber, the damping particles that arranges will dissipate a part of vibrational energy, improve the vibration control level, prolong the working life of vibration control apparatus of the present invention.The natural frequency of vibration isolation unit should be less than 0.707 times of machinery frequency of okperation, and namely according to the machinery quality of carrying, the axial rigidity of adjusting outward corrugated tube makes it satisfy the requirement of certain vibration transmissibility.Different according to the absorbing object, it is equal or identical with the frequency of okperation of machinery with the natural frequency of vibration isolation unit that the natural frequency of absorbing unit can be designed to, namely adjust as required the axial rigidity of inner corrugated pipe and the quality of mass block, make it satisfy the requirement of dynamic vibration absorber.
Beneficial effect of the present invention is:
1. the present invention adopts the metal material bellows, is generally stainless steel, beryllium bronze or other metallic material, and bellows can be U-shaped, V-type, C type or S type; Bellows has good axial elasticity and less structural damping, can reduce preferably the vibrational energy that machinery is transmitted to the basis, has excellent anti-vibration performance;
2. when the vibrational energy of machinery is delivered to this device, the bump leveller that is comprised of inner corrugated pipe and mass block can absorb the partial vibration energy of machinery, thereby effectively control the vibration of machinery itself, this has obvious positive effect to the level of vibration that reduces machinery;
3. the present invention creatively combines vibration isolator and bump leveller, and in engineering was used, narrow and small and Environmental Conditions had the occasion of specific (special) requirements for installing space, and vibration control scheme applicability provided by the invention is stronger;
4. when granule damper directly was threaded with inner cap, namely granule damper and machinery were connected, and can enlarge markedly the internal loss factor of mechanical structure, the vibratory response amplitude in the time of can effectively reducing the machinery across resonance;
5. exist the gas leakage problem to compare with traditional air sac type vibration isolating, the present invention does not have the oil gas leakage problem, do not need to install extra inflator, saved a large amount of installing spaces and reduced optional equipment, energy consumption and the extra mechanical vibration noise that increases of having avoided these optional equipments to cause;
6. the bellows material can adopt stainless steel or other alloy, the rubber vibration isolator that the adaptability of the environment such as its mechanical property, oil resistance, corrosion resistance, heat-resisting quantity all obviously is better than the air bag vibration isolating and uses macromolecular material.
Description of drawings
Fig. 1 is the novel vibrating control gear figure that has the vibration isolation shock sucking function concurrently in the embodiment of the invention 1;
Fig. 2 is the novel vibrating control gear figure that has the vibration isolation shock sucking function concurrently in the embodiment of the invention 2;
Fig. 3 is the novel vibrating control gear figure that has the vibration isolation shock sucking function concurrently in the embodiment of the invention 3;
Number in the figure title: 1. outward corrugated tube, 2. upper head plate, 3. lower end sheet, 4. inner cap, 5. inner corrugated pipe, 6. mass block, 7. damping cavity, 8. damping particles.
Embodiment
Below in conjunction with accompanying drawing, the mode by embodiment is elaborated to technical solution of the present invention, but protection scope of the present invention is not limited to described embodiment.
As shown in Figure 1, a kind of novel vibrating control gear that has the vibration isolation shock sucking function concurrently, the two ends of outward corrugated tube 1 are welded on respectively on upper head plate 2 and the lower end sheet 3; The neutral position of upper head plate 2 has ladder hole, is connected by hexagon socket head cap screw with inner cap 4; The two ends of inner corrugated pipe 5 are welded and fixed with inner cap 4 and mass block 6 respectively.Described upper head plate and lower end sheet all have through hole at marginal position, in order to be connected and fixed with machinery and basis;
When the disturbing force that machinery produces acts on outward corrugated tube 1 by upper head plate 2 and lower end sheet 3, axial deformation can freely occur in outward corrugated tube 1, provide vibration isolation required elastic restoring force, make be delivered to lower end sheet 3 namely the vibrational energy on the basis significantly isolated.Different according to the absorbing object, the axial rigidity of design inner corrugated pipe 5 and the quality of mass block 6 make its requirement of satisfying dynamic absorber, can significantly reduce the namely vibratory response of machinery of upper head plate 2.This structural type can be born quiet, the dynamic load of heavy duty equipment, can significantly isolate the vibration force that is delivered on the basis, also can reduce the vibratory response of machinery, the function of performance dynamic vibration absorber.
As shown in Figure 2, a kind of novel vibrating control gear that has the vibration isolation shock sucking function concurrently, the two ends of outward corrugated tube 1 are welded on respectively on upper head plate 2 and the lower end sheet 3; The neutral position of upper head plate 2 has ladder hole, is connected by hexagon socket head cap screw with inner cap 4; The two ends of inner corrugated pipe 5 are welded and fixed with inner cap 4 and damping cavity 7 respectively, and the damping particles 8 of some is housed in the damping cavity 7.
When the disturbing force that machinery produces acts on outward corrugated tube 1 by upper head plate 2 and lower end sheet 3, axial deformation can freely occur in outward corrugated tube 1, provide vibration isolation required elastic restoring force, make be delivered to lower end sheet 3 namely the vibrational energy on the basis significantly isolated.Between the damping particles 8 of described damping cavity 7 inside both because of bump, friction loss vibrational energy, its associated mass that provides consists of mass block quality in the shock-absorbing means together with damping cavity 7 again, itself and inner corrugated pipe 5 are brought into play the effect of dynamic vibration absorbers, but the vibratory response of decrease damping cavity, the working life of prolongation inner corrugated pipe 5; Therefore, material, size and the fill factor of damping particles in appropriate each bellows axial rigidity of design and the choose reasonable damping cavity, can significantly isolate the exciting force that is delivered on the basis, also can reduce the vibratory response of machinery self, the function of performance dynamic vibration absorber.
As shown in Figure 3, a kind of vibration control apparatus that has vibration isolation, shock sucking function concurrently, the two ends of outward corrugated tube 1 are welded on respectively on upper head plate 2 and the lower end sheet 3; The neutral position of upper head plate 2 has ladder hole, is connected by hexagon socket head cap screw with inner cap 4; The lower end of inner cap 4 is provided with outside thread, and damping cavity 7 and inner cap 4 are connected by screw thread, and the damping particles 8 of some is housed in the damping cavity 7; The two ends of inner corrugated pipe 5 are welded and fixed with damping cavity 7 and mass block 6 respectively.
When the disturbing force that machinery produces acts on outward corrugated tube 1 by upper head plate 2 and lower end sheet 3, axial deformation can freely occur in outward corrugated tube 1, provide vibration isolation required elastic restoring force, make be delivered to lower end sheet 3 namely the vibrational energy on the basis significantly isolated.Vibration because of inner cap 4 between the damping particles 8 of damping cavity 7 inside bumps and rubs, the vibrational energy of loss machinery; Inner corrugated pipe 5 and mass block 6 consist of dynamic vibration absorber, but the vibratory response of decrease machinery.Therefore, design material, size and the fill factor of damping particles in each bellows axial rigidity, mass block quality and the choose reasonable damping cavity, can significantly isolate the exciting force that is delivered on the basis, also can reduce the vibratory response of machinery self, the function of performance dynamic vibration absorber.
Claims (4)
1. vibration control apparatus that has vibration isolation, shock sucking function concurrently is characterized in that:
Formed by vibration isolation unit and absorbing unit;
Wherein vibration isolation unit is comprised of upper head plate (2), lower end sheet (3), the outward corrugated tube (1) that is connected between upper head plate and the lower end sheet; Wherein the absorbing unit comprises the inner corrugated pipe (5) that is connected in inner cap (4) lower end and the mass block (6) that is connected in the inner corrugated pipe lower end; Leave mass block (6) movement clearance between above-mentioned mass block (6) and the lower end sheet (3);
The natural frequency of above-mentioned vibration isolation unit is less than 0.707 times of the contained machinery frequency of okperation of upper head plate; Different according to the absorbing object, the natural frequency of above-mentioned absorbing unit is identical with the natural frequency of vibration isolation unit or identical with the frequency of okperation of machinery.
2. the vibration control apparatus that has vibration isolation, shock sucking function concurrently according to claim 1 is characterized in that: the mass block (6) of above-mentioned absorbing unit is comprised of solid metal or damping cavity (7) and the damping particles (8) of filling.
3. the vibration control apparatus that has vibration isolation, shock sucking function concurrently according to claim 1, it is characterized in that: above-mentioned absorbing unit also comprises the damping cavity (7) that is fixed between inner cap (4) and the inner corrugated pipe (5), and damping particles (8) is housed in the damping cavity (7); Inner cap (4) lower end is provided with outside thread, and damping cavity (7) is connected by screw thread with inner cap (4).
4. the vibration control apparatus that has vibration isolation, shock sucking function concurrently according to claim 1, it is characterized in that: described outward corrugated tube (1) and inner corrugated pipe (5) are comprised of individual layer or multi-layer metal bellows.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675898A (en) * | 2014-12-10 | 2015-06-03 | 抚顺博宇噪声控制技术开发有限公司 | Large-damping adjustable secondary vibration isolator |
| CN104976432A (en) * | 2015-07-08 | 2015-10-14 | 中国船舶重工集团公司第七一九研究所 | Pipeline vibration-insulation antishock elastic supporting suspension rack |
| CN105041942A (en) * | 2015-06-29 | 2015-11-11 | 上海交通大学 | Frictionless fluid damping vibration isolator |
| CN107387635A (en) * | 2017-07-28 | 2017-11-24 | 南京航空航天大学 | A kind of oil pipeline three-dimensional bump leveller |
| CN107939898A (en) * | 2017-11-30 | 2018-04-20 | 南京航空航天大学 | A kind of bellows-type buffer |
| CN108443154A (en) * | 2018-04-23 | 2018-08-24 | 珠海格力电器股份有限公司 | Compressor shock-absorbing component and air-conditioner set |
| CN109193504A (en) * | 2018-11-13 | 2019-01-11 | 国家电网有限公司 | A kind of attachment device for indoor flooring arrangement electrical equipment |
| CN109329190A (en) * | 2018-11-15 | 2019-02-15 | 辽宁科技大学 | A kind of minute bubbles fishpond apparatus of oxygen supply of vibration damping |
| CN110793842A (en) * | 2019-05-01 | 2020-02-14 | 河南交院工程技术有限公司 | Loading device capable of storing energy |
| CN112098041A (en) * | 2020-08-18 | 2020-12-18 | 南京航空航天大学 | Rigidity adjusting device of wing low-speed flutter wind tunnel test model |
| CN114810932A (en) * | 2022-05-20 | 2022-07-29 | 福州大学 | Hydraulic inertial container nonlinear energy trap vibration isolation device and working method thereof |
| CN115654065A (en) * | 2022-10-18 | 2023-01-31 | 中国船舶重工集团公司第七一九研究所 | Electromagnetic type active and passive integrated vibration isolator |
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| CN102087300A (en) * | 2010-11-11 | 2011-06-08 | 西北大学 | Fiber grating acceleration transducer based on metal bellows structure |
| CN102388234A (en) * | 2009-04-09 | 2012-03-21 | 株式会社神户制钢所 | Vibration damping structure |
| CN102537184A (en) * | 2012-01-18 | 2012-07-04 | 江南大学 | Shock absorber capable with dynamically adjustable damping |
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Patent Citations (5)
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| KR0168409B1 (en) * | 1994-10-15 | 1998-12-15 | 김진수 | Bed spring using shock absorber principal |
| CN102388234A (en) * | 2009-04-09 | 2012-03-21 | 株式会社神户制钢所 | Vibration damping structure |
| CN101701615A (en) * | 2009-11-20 | 2010-05-05 | 南京航空航天大学 | Bellow-type mixed medium vibration isolating and absorbing unit |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675898A (en) * | 2014-12-10 | 2015-06-03 | 抚顺博宇噪声控制技术开发有限公司 | Large-damping adjustable secondary vibration isolator |
| CN105041942A (en) * | 2015-06-29 | 2015-11-11 | 上海交通大学 | Frictionless fluid damping vibration isolator |
| CN104976432A (en) * | 2015-07-08 | 2015-10-14 | 中国船舶重工集团公司第七一九研究所 | Pipeline vibration-insulation antishock elastic supporting suspension rack |
| CN107387635A (en) * | 2017-07-28 | 2017-11-24 | 南京航空航天大学 | A kind of oil pipeline three-dimensional bump leveller |
| CN107939898B (en) * | 2017-11-30 | 2023-09-29 | 南京航空航天大学 | Bellows type buffer |
| CN107939898A (en) * | 2017-11-30 | 2018-04-20 | 南京航空航天大学 | A kind of bellows-type buffer |
| CN108443154A (en) * | 2018-04-23 | 2018-08-24 | 珠海格力电器股份有限公司 | Compressor shock-absorbing component and air-conditioner set |
| CN108443154B (en) * | 2018-04-23 | 2024-04-05 | 珠海格力电器股份有限公司 | Shock absorbing assembly for compressor and air conditioning unit |
| CN109193504A (en) * | 2018-11-13 | 2019-01-11 | 国家电网有限公司 | A kind of attachment device for indoor flooring arrangement electrical equipment |
| CN109329190A (en) * | 2018-11-15 | 2019-02-15 | 辽宁科技大学 | A kind of minute bubbles fishpond apparatus of oxygen supply of vibration damping |
| CN110793842A (en) * | 2019-05-01 | 2020-02-14 | 河南交院工程技术有限公司 | Loading device capable of storing energy |
| CN112098041A (en) * | 2020-08-18 | 2020-12-18 | 南京航空航天大学 | Rigidity adjusting device of wing low-speed flutter wind tunnel test model |
| CN114810932A (en) * | 2022-05-20 | 2022-07-29 | 福州大学 | Hydraulic inertial container nonlinear energy trap vibration isolation device and working method thereof |
| CN114810932B (en) * | 2022-05-20 | 2023-03-14 | 福州大学 | Hydraulic inertial container nonlinear energy trap vibration isolation device and working method thereof |
| CN115654065A (en) * | 2022-10-18 | 2023-01-31 | 中国船舶重工集团公司第七一九研究所 | Electromagnetic type active and passive integrated vibration isolator |
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Application publication date: 20130417 |