CN103470676A - Inertia mass energy accumulation type vibration isolation device with parallel connected dampers - Google Patents
Inertia mass energy accumulation type vibration isolation device with parallel connected dampers Download PDFInfo
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- CN103470676A CN103470676A CN2013104224261A CN201310422426A CN103470676A CN 103470676 A CN103470676 A CN 103470676A CN 2013104224261 A CN2013104224261 A CN 2013104224261A CN 201310422426 A CN201310422426 A CN 201310422426A CN 103470676 A CN103470676 A CN 103470676A
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Abstract
The invention discloses an inertia mass energy accumulation type vibration isolation device with parallel connected dampers. A spring A (1) and a damper A (2) are connected in parallel for forming a traditional vibration isolation body (3), an inertia mass energy accumulator (6) and a damper B (7) are connected in parallel and are then connected in series with a spring B (5) for forming a novel vibration isolation body (4), and the inertia mass energy accumulation type vibration isolation device is formed by the traditional absorption body (3) and the novel vibration isolation body (4) through parallel connection. The vibration isolation device can greatly improve the suspension mass vibration characteristics under the condition that the work space is unchanged, so the integral performance of the vibration isolation device can be greatly improved. In addition, the structure of the inertia mass energy accumulation type vibration isolation device is compact, and can be obtained through a little improvement on the basis of the traditional passive vibration isolation device, the mature theoretical and process technology of the traditional passive vibration isolation device can be sufficiently utilized, complicated controllers, control strategies and electronic devices are not needed, the energy input is not needed, the cost is low, and the reliability is high.
Description
Technical field
The present invention relates to vibration damping and vibration isolation technique field, specifically refer to the vibration damping equipment formed by inertial mass accumulator, spring and damper.
Background technique
The major function of vibration damping equipment is to improve outstanding vibration characteristics of improving quality, and when carrying out this function, also the vibration damping equipment working space must be controlled in allowed limits.The tradition passive absorber is by spring and damper parallel connection, and this structural type is from determining existing one-hundred-year history so far, never breakthrough.In traditional passive absorber, on the one hand, adopt softer spring can obtain vibration characteristics preferably, on the other hand, vibration characteristics but always take that to sacrifice the vibration damping equipment working space be cost.For alleviating this contradiction, occurred initiatively and half active damper.Active damper due to complex structure, poor reliability, low-response, energy consumption is high, cost is high, its research only rests on theory stage.Half active damper energy consumption is low, but the existence of Time Delay has limited the performance of its performance, and commercialization is still needed the long period.Passive absorber is simple in structure, with low cost, reliable in function, in present stage, still has higher Research Significance and construction value.
The vibration damping equipment of mechanical system and the eliminator of electricity system have similarity, and function is all the harmful frequency in the decay input signal.Inertial mass accumulator is with regard to the similarity that is based on Mechatronic Systems and the complete similar corresponding mechanical component of a kind of and capacitor of introducing.Its appearance makes the electricity component of the mechanical elements of mechanical vibration insulating system and eliminator can be perfect corresponding, thereby makes the structural type of passive vibration isolation device have diversity as eliminator.
Chinese patent 200810123830.8 discloses a kind of inertial mass energy-storage type suspension frame structure.By inertial mass accumulator and damper parallel connection, spring and another damper parallel connection, then by two paralleling mechanism series connection.In theory, this suspension can effectively be alleviated the contradiction between riding comfort and driving safety, yet in actual application, the doublet of inertial mass accumulator and damper, under the car body Action of Gravity Field, be easy to lose efficacy because of " puncturing ", damping property after inefficacy and traditional isolation mounting indifference, and moment of failure can produce larger impact.The problem lost efficacy because of " puncturing " for the doublet that solves inertial mass accumulator and damper, 201010281331.9 pairs of said structures of Chinese patent improve, in the doublet two ends parallel connection of inertial mass accumulator and damper a spring, efficiently solve " puncturing " Problem of Failure, still, spring in parallel descends vibration damping usefulness to some extent, and complicated structure, difficulty in installation and layout, as long as wherein the one-level doublet lost efficacy, whole device can't work.
Along with the develop rapidly of industrial technology, vibration source intensity improves constantly, yet but more and more stricter to the restriction of vibration, and low-carbon (LC), environmental protection, the energy-conservation trend that becomes current development in science and technology.The tradition passive absorber has been gone through century-old development, theoretical ripe, reliable performance, and with low cost, the appearance of inertial mass accumulator, make passive vibration damping have larger development potentiality.Therefore, in the urgent need to a kind of superior performance, and can take full advantage of the new type of passive vibration damping equipment of traditional isolation mounting mature technology on engineering.
Summary of the invention
Technical problem to be solved by this invention is: on traditional vibration damping equipment basis of spring and damper parallel connection, increase inertial mass accumulator, at the vibration damping equipment working space under constant prerequisite, improve to greatest extent outstanding vibration characteristics of improving quality, and can take full advantage of the existing ripe theory of traditional passive absorber and production technology.
The technological scheme that the present invention solves this technical problem employing is: spring A and damper A compose in parallel traditional vibration isolator, inertial mass accumulator and damper parallel connection, with spring, connect again, form novel vibration isolator, traditional vibration isolator and novel vibration isolator are composed in parallel to the inertial mass energy-storage type vibration damping equipment with damper in parallel.
The concrete technological scheme of the present invention comprises traditional vibration isolator and novel vibration isolator.
The tradition vibration isolator comprises spring A and damper A, and spring A and damper A are in parallel.Novel vibration isolator comprises inertial mass accumulator, damper B and spring B, and inertial mass accumulator is first in parallel with damper B, and the doublet of inertial mass accumulator and damper B is connected with spring B again.The tradition vibration isolator composes in parallel the inertial mass energy-storage type vibration damping equipment with damper in parallel with novel vibration isolator.
Compare with traditional passive absorber, the invention has the beneficial effects as follows:
1, inertial energy-accumulating formula vibration damping equipment can suppress the resonance of system, especially in low frequency part.
2, inertial energy-accumulating formula vibration damping equipment can be alleviated outstanding contradiction of improving quality between vibration characteristics and working space, and the outstanding vibration characteristics of improving quality has clear improvement, but the vibration damping equipment working stroke does not increase.
Above-mentioned two advantages have determined that this vibration damping equipment obviously is better than traditional vibration damping equipment on performance, and in addition, this apparatus structure letter is compact, does not need complicated controller, control strategy and electronic parts and components, does not need the energy input, and cost is low, and reliability is high.
The accompanying drawing explanation
Fig. 1 is traditional passive absorber structural representation
Fig. 2 is the inertial mass energy-storage type damping device structure schematic diagram with damper in parallel
Fig. 3 is two-degree-of-freedom vibration isolating system model schematic diagram
The inertial mass energy-storage type vibration damping equipment that Fig. 4 is the band damper in parallel shown in employing Fig. 2 is as the second level isolation mounting shown in Fig. 3, when adopting the traditional vibration damping equipment shown in Fig. 1 as the second level isolation mounting shown in Fig. 3, the amplitude versus frequency characte contrast schematic diagram of outstanding improve quality acceleration and vibration damping equipment working stroke
In figure, the outstanding 9-second level vibration damping equipment 10-that improves quality of the novel vibration isolator 5-of the 1-spring A2-damper A3-tradition vibration isolator 4-spring B 6-inertial mass accumulator 7-damper B8-quality 11-first order vibration damping equipment 12-dynamic excitation that hangs
Embodiment
Below in conjunction with accompanying drawing and two-degree-of-freedom vibration isolating example, the present invention is further illustrated.
The present invention includes traditional vibration isolator (3) and novel vibration isolator (4).
Tradition vibration isolator (3) is traditional vibration damping equipment, comprises spring A (1) and damper A (2), spring A (1) and damper A (2) parallel connection, as shown in Figure 1.
Novel vibration isolator (4) comprises inertial mass accumulator (6), damper B (7) and spring B (5), inertial mass accumulator (6) is first in parallel with damper B (7), and the doublet of inertial mass accumulator (6) and damper B (7) is connected with spring B (5) again.
Inertial mass energy-storage type vibration damping equipment with damper in parallel is composed in parallel by above-mentioned traditional vibration isolator (3) and novel vibration isolator (4), as shown in Figure 2.
Inertial mass accumulator in the present invention (6) way of realization has multiple, can adopt gear rack inertial mass accumulator (Rack and pinion inerter, see U. S. Patent 7316303B2), ball screw inertial mass accumulator (Ball screw inerter, see U. S. Patent 2009/0108510A1) and fluid power inertial mass accumulator (Hydraulic inerter is shown in U. S. Patent 2009/0139225A1) in a kind of.
Fig. 3 is the two-degree-of-freedom vibration isolating system model, and by outstanding improving quality (8), second level vibration damping equipment (9), the quality that hangs (10), first order vibration damping equivalent stiffness (11), dynamic excitation (12) etc. partly form.
Fig. 4 adopts vibration damping equipment shown in Fig. 2 as the second level vibration damping equipment (9) shown in Fig. 3, when adopting the traditional vibration damping equipment shown in Fig. 1 as the second level vibration damping equipment (9) shown in Fig. 3, the amplitude versus frequency characte contrast schematic diagram of outstanding improve quality acceleration and vibration damping equipment working stroke.As can be seen from Figure 4, adopt the inertial energy-accumulating formula isolation mounting shown in Fig. 2 as second level vibration damping equipment, while being subject to low-frequency excitation, the amplitude of outstanding improve quality acceleration and vibration damping equipment working stroke has obvious reduction, and effectiveness in vibration suppression is significantly increased.
In the situation that other conditions are identical, the present invention can reach the performance index close with the disclosed two-stage series connection type of above-mentioned Chinese patent 200810123830.8 inertial mass energy-storage type suspension, and has in the following areas clear superiority:
1, retain spring A (1) and damper A (2) traditional vibration isolator in parallel, made its two ends can bear static load, thereby effectively avoided inertial mass accumulator to lose efficacy because of " puncturing ", had more the engineering using value.
2, traditional vibration isolator is in parallel with novel vibration isolator, compact structure improves and gets final product a little on the basis of traditional isolation mounting setting type, can continue to use existing ripe theoretical method and process engineering.
3, traditional vibration isolator is in parallel with novel vibration isolator, promoted the reliability of vibration damping equipment, even novel vibration isolator lost efficacy, can also retain the vibration damping usefulness of traditional vibration damping equipment of spring A (1) and damper A (2) parallel connection.
In sum, the present invention is simple in structure, and reliability is high, although change less to traditional vibration damping equipment, but in the situation that the vibration damping equipment working space remains unchanged, can greatly improve outstanding vibration characteristics of improving quality, the overall performance of vibration damping equipment is increased dramatically.
Claims (4)
1. the energy-storage type of the inertial mass with a damper in parallel vibration damping equipment, is characterized in that being comprised of inertial mass accumulator, spring A, spring B, damper A and damper B.Its medi-spring A (1) and damper A (2) compose in parallel traditional vibration isolator (3), inertial mass accumulator (6) and damper (7) parallel connection, with spring (5), connect again, form novel vibration isolator (4), described traditional vibration isolator (3) is in parallel with novel vibration isolator (4).
2. the inertial mass energy-storage type vibration damping equipment of band according to claim 1 damper in parallel, is characterized in that, this energy-storage type of inertial mass with damper in parallel vibration damping equipment can be used as suspension device for vehicle.
3. the inertial mass energy-storage type vibration damping equipment of band according to claim 1 damper in parallel, is characterized in that, this energy-storage type of inertial mass with damper in parallel vibration damping equipment can be used as the pilot set vibration damping equipment.
4. the inertial mass energy-storage type vibration damping equipment of band according to claim 1 damper in parallel, is characterized in that, this energy-storage type of inertial mass with damper in parallel vibration damping equipment can be used as the cab mounting vibration damping equipment.
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| CN2013104224261A CN103470676A (en) | 2013-09-17 | 2013-09-17 | Inertia mass energy accumulation type vibration isolation device with parallel connected dampers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510378A (en) * | 2018-12-28 | 2019-03-22 | 浙江荣捷特科技有限公司 | A kind of Stirling motor vibration insulating system |
| CN112538907A (en) * | 2020-10-29 | 2021-03-23 | 南京理工大学 | Double-inertia-capacity parallel type four-order vibration reduction structure |
| CN112982706A (en) * | 2021-02-18 | 2021-06-18 | 同济大学 | Three-dimensional structure vibration reduction system based on inertial volume and application |
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| US6898501B2 (en) * | 1999-07-15 | 2005-05-24 | Cnh America Llc | Apparatus for facilitating reduction of vibration in a work vehicle having an active CAB suspension system |
| WO2003005142A1 (en) * | 2001-07-04 | 2003-01-16 | Cambridge University Technical Services Ltd | Force-controlling mechanical device |
| DE10306228A1 (en) * | 2003-02-13 | 2004-09-02 | Sachsenring Fahrzeugtechnik Gmbh | Actuator for active chassis control has final control element for compensating rocking and pitching movements that also reduces lifting movement of vehicle body in accordance with sky hook principle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510378A (en) * | 2018-12-28 | 2019-03-22 | 浙江荣捷特科技有限公司 | A kind of Stirling motor vibration insulating system |
| CN112538907A (en) * | 2020-10-29 | 2021-03-23 | 南京理工大学 | Double-inertia-capacity parallel type four-order vibration reduction structure |
| CN112538907B (en) * | 2020-10-29 | 2022-03-18 | 南京理工大学 | Double-inertia-capacity parallel type four-order vibration reduction structure |
| CN112982706A (en) * | 2021-02-18 | 2021-06-18 | 同济大学 | Three-dimensional structure vibration reduction system based on inertial volume and application |
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Application publication date: 20131225 |