CN205064678U - Non - sealed steel spring damping isolator - Google Patents
Non - sealed steel spring damping isolator Download PDFInfo
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- CN205064678U CN205064678U CN201520667913.9U CN201520667913U CN205064678U CN 205064678 U CN205064678 U CN 205064678U CN 201520667913 U CN201520667913 U CN 201520667913U CN 205064678 U CN205064678 U CN 205064678U
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Abstract
The utility model provides an isolator, includes spring (6) and damping system, and wherein damping system includes piston (8), damping material (7) and damping section of thick bamboo wall (9), and wherein piston (8) comprise two or more piston board (12) that piston rod and interval set up, and damping section of thick bamboo wall (9) overhead has trompil (10), and when piston (8) up -and -down motion, reciprocating motion is in the trompil that damping material leads to on (7) overdamp section of thick bamboo wall (9).
Description
Technical field
The utility model belongs to vibration and field of noise control, particularly relates to a kind of for alleviating the vibration and environmental disruption that noise brings that send in rail vehicle running, or reduces the isolation mounting of building member and equipment Foundations vibration.
Background technique
Along with modern society's population is assembled to big city gradually, trip becomes townie a great problem, and the appearance of City Rail Transit System provides great convenience to the life and work of people.While urban track traffic offers convenience to people's trip, its vibration & noise produced also annoyings daily life.Floating plate track system effectively alleviates the vibration & noise that track traffic produces.
Vibration & noise is influence surface the most a kind of public hazards that people generally acknowledge, is also track traffic in recent years development one of a facing difficult problem urgently to be resolved hurrily.Vibration isolator is a kind of widely used vibration control primary element, in the vibration damping for mechanical vibration, the traffic tool, building structure.
A kind of common vibration isolator is made up of elastic system and damped system.Wherein common damped system form is sealed hydraulic oil cylinder formula, it is made up of piston rod, cylinder body, damping material, sealing system etc., its piston and cylinder body are generally between cylindrical piston head and cylinder body and leave appropriate gap (being called clearance type damping), during piston axial motion, the resistance to motion to piston is formed by Clearance Flow at piston cylinder two ends mineralization pressure official post damping material, kinetic energy absorption is converted into heat energy, is thus applied to vibration damping place.This damped system is improved through years development, better applies widely.But it has born defect:
1) tight seal approach must be adopted, provide damping with the pressure difference that this keeps damping material to be formed when nullisomic inner carrier moves.But Sealing is easily aging, once seal failure pressure difference reduces immediately or loses;
2) design of part is more, and machining accuracy, reliability requirement are high, once strength member loses efficacy, effect immediately subtracted greatly or lost efficacy, and therefore cost is high;
3) damping material passes through high shear by when hole or Clearance Flow, instantaneous heating up higher, easily aging under prolonged and repeated load action, causes damped system to lose efficacy;
4) in damping material, deep thing and wear particle thing affect damping parameter, and accelerate damped system destruction;
Due to above reason, this form damped system is except high-quality famous brand products, and the life-span is all lower, and the damped system of a lot of bridge, building, automobile, machinery etc. just needs to change for several years, causes waste, befouling environment.
Existing market also there are some open damped systems and corresponding vibration isolator, mainly contain two kinds of forms:
One, elastic element and the damped system form of connecting in the height direction.Damped system is imitated sealed type damped system and is made hole formula or clearance type, and damping mainly relies on the viscosity of high viscosity damping material to produce.
Two, elastic element and damped system on vertical side by side, mutual height overlaps.Because elastic element (mainly spring) inner space is less, the masterpiece that the viscoelasticity power between the viscosity of general viscoelastic material and rigidity hinge produces is damping force.
Mainly there is following problem in current open damped system:
1) steel spring vibration isolator damping agent problem: damping material is very different, its volatility, ageing resistance, sticky warm stability etc. are difficult to ensure, the working life that damping material and steel spring match is difficult to make objective appraisal.
2) vibration isolator damp liquid leakage problems: general damping material is immersed in water in addition, it is functional and be difficult to working life ensure.
3) form that the vibration isolator that existing engineering circles adopts generally adopts elastic element and damped system to connect in the height direction, elastic element and damped system all need space on vertical, its whole height is many at more than 200mm, mix outer sleeve top lifting height etc. again, its height is at more than 300mm, and being difficult to gets on the right track with general overhead route matches.
Summary of the invention
The purpose of this utility model is the defect overcoming existing vibration isolator, provides a kind of height adaptive capacity stronger, is suitable for the isolation mounting of the floating plate railway roadbed of floating ballast bed structure.
Vibration isolator of the present utility model, comprise spring and damped system, it is characterized in that: damped system comprises piston, damping material and damping barrel, wherein piston is made up of two or more piston plate spaced on piston rod and piston rod, damping barrel is equipped with perforate, when piston up-down, damping material is moved reciprocatingly by the perforate on damping barrel.
Further, wherein piston has the structure that can adjust with damping material resistance.
Another vibration isolator structure of the present utility model, comprise spring and damped system, it is characterized in that: damped system comprises piston, damping material and supporting frame, supporting frame is used for the displacement of limited piston horizontal direction, it comprises the column of more than two and the piston collar fixing in column upper end, wherein piston has the structure that can increase with damping material resistance.
Further, the structure of wherein said adjustment and damping material resistance is: piston has at least one piston plate, at least one piston plate is provided with through hole wherein.
Further, the structure of wherein said adjustment and damping material resistance is: piston has two piston plates, one or two piston plate is provided with through hole wherein.
Further, the structure of wherein said adjustment and damping material resistance comprises further: be enclosed within the piston cylinder at least one piston plate, during piston movement, can wrap up a certain amount of damping material in piston cylinder.
Further, the structure of wherein said adjustment and damping material resistance comprises further: at least one piston plate is inverted pyramidal structures.
Further, wherein it is characterized in that: vibration isolator also comprises, the upper cylinder comprise upper plate, being attached thereto, base plate, the lower cylinder body be attached thereto, closed by seal ring between upper lower cylinder body.
Further, be formed as one with lower cylinder body comprising upper plate with upper cylinder and/or base plate, weld or be threaded.
Further, wherein damping material is that isocyanate component and amino-compound component react the elastomer generated.
Invention effect:
Adopt vibration isolator structure of the present utility model, spring is in parallel in short transverse with damped system, save space, can meet completely overhead route get on the right track height requirement.
Vibration isolator structure of the present utility model, is provided with the structures such as through hole, piston cylinder, inverted pyramid, can be facilitated the damping of adjust system by the parameter changing these structures.
Vibration isolator structure of the present utility model, damping capacity is stablized.By adjust structure size and viscosity of material or viscoelasticity, damping constant can reach 15 ~ 30N/mm*s, and its damping ratio can reach 0.05 ~ 0.15, and the floating plate structural vibration reduction effect that vibration isolator is made thus can reach 20 ~ 30dB.
Damping material of the present utility model adopts double-component macromolecular material, its viscosity can viscosity can from low viscosity mobility liquid to high viscosity liquid again to the memory fluid that do not flow by the proportioning of component is different, damping property is stable, ageing-resistant, energy-absorbing strong, can provide larger damping force.
Accompanying drawing explanation
Fig. 1 is the utility model mode of execution one vibration isolator structure figure
Fig. 2 is the utility model mode of execution two vibration isolator structure figure
Fig. 3 is the structural drawing of the utility model mode of execution two supporting frame
Fig. 4 is piston structure figure of the present utility model
Fig. 5 is another mode of execution piston structure of the utility model figure
Fig. 6 is other mode of execution piston structure of the utility model figure
Fig. 7 is time-displacement curve figure the utility model vibration isolator being loaded to simple harmonic quantity displacement load
Fig. 8 is the time of the utility model vibration isolator under simple harmonic quantity displacement effect--damping force curve
Fig. 9 is the utility model vibration isolator displacement--damping force plotted curve
Embodiment
In order to make the art personnel better understand the utility model, below in conjunction with accompanying drawing and implementation methods, the utility model is described in further detail.
In figure, 1-upper plate; 2-upper cylinder; 3-lower cylinder body; 4-base plate; 5-seal ring; 6-spring; 7-damping material; 8-piston; 9-damping barrel; 10-perforate; 11-supporting frame; 12-piston plate; 13-piston cylinder.
Mode of execution one:
With reference to Fig. 1, according to the spring damping vibration isolator of the present embodiment, comprise: upper plate 1, the upper cylinder 2 be attached thereto, base plate 4, the lower cylinder body 3 be attached thereto, upper and lower ferrule barrel is circular or square structure, connected by soft seal ring 5 (as rubber) between upper lower cylinder body and close, forming a containing space.Be provided with spring 6 and damped system in it, damped system comprises damping material 7, piston 8, damping barrel 9, wherein damping barrel 9 is provided with perforate 10, and the integral damping coefficient of vibration isolator can be adjusted by the viscosity number of damping material and perforate size.When vibration isolator is by external force, spring 6 is compressible or uphold, piston 8 can pump, now, damping material is moved reciprocatingly by the perforate on damping barrel, along with damping material viscosity is different with the size of damping tube wall opening, the damping force provided is also different, and the damping constant be converted into is also different.Namely damping constant can be adjusted by the size of the viscosity of adjustment damping material and the perforate of damping wall.
Wherein piston 8 is preferably Multilayer Structure, and namely interval arranges two or more piston plate 12 on the piston rod.Now, the piston plate above when moving has individual position-limiting action for the motion of whole piston, avoids at emergency case down stroke excessive, damages whole vibration isolator structure.
In preferred scheme, at least one piston plate 12 is arranged porose, hole number and size can adjust as required, and such damping barrel 9 and piston 8 all have the perforate flow through for damping material 7, like this when piston 8 is with damping material 7 relative movement, damping material 7 can through described hole.By changing the damping constant that can adjust whole damped system of the number of openings, area.
Mode of execution two:
See accompanying drawing 2-4, the vibration isolator structure of the second mode of execution of the present utility model, similar with the first mode of execution vibration isolator structure, the upper cylinder 2 comprise upper plate 1, being attached thereto, base plate 4, the lower cylinder body 3 be attached thereto, upper and lower ferrule barrel is circular or square structure, is connected and closes, form a containing space between upper lower cylinder body by soft seal ring 5 (as rubber).Be provided with spring 6 and damped system in it, damped system comprises damping material 7, piston 8, supporting frame 11.Piston 8 limits its horizontal direction displacement by supporting frame 11, ensure that it does vertical single axial movement under external force, it is the column of more than two that supporting frame comprises, its lower end is fixed on base plate 4, upper end and the piston collar are fixed, the piston collar coordinates with piston rod to be installed, and plays the leading role to piston rod.Damping material 7 is non-current viscoelastic material, and piston 8 is embedded in wherein, when doing single axial movement up and down, provides damping force by piston 8 and damping material 7 relative movement, and damping force can cross size and the viscoelastic size adjustment of damping material 7 of piston diameter.
Wherein the structure of piston 8 is for arrange one or two or multiple piston plate 12 on the piston rod, in a preferred scheme, at least one piston plate 12 is arranged porose, hole number and size can adjust as required, that damping material 7 can through described hole like this in piston 8 and damping material 7 relative movement.
See Fig. 5, show the piston structure in other mode of execution of the utility model, wherein, piston 8 is made up of piston rod, piston plate 12 and the piston cylinder 13 be enclosed within piston plate 12, and piston plate 12 has through hole.During such piston movement, a certain amount of damping material 7 can be wrapped up in piston cylinder 13, and force damping material 7 to pass from the aperture piston plate 12, ensure certain damping force.
See Fig. 6, the piston 8 of the utility model another program, it is made up of piston rod and inverted cone piston head, when piston moves downward, the conical surface of vertebral body is relative to slab construction piston plate 12, the area of contact of itself and damping material 7 is larger, and more damping material 7 is around squeezed, and the damping material 7 of piston head upper surface attachment when piston head moves upward also can provide certain resistance.Certainly, when piston piston rod has multiple piston plate 12, also other piston plates 12 partly or entirely can be arranged to vertebral body structure.
Piston structure in above-mentioned Fig. 4-6 can combine mutually, such as, a piston rod arranges multiple piston plate 12, porose on the plate wherein had, some atresias, some plates are provided with piston cylinder 13, some traps are vertebral body structure, and the piston structure that is independent and combinations thereof of Fig. 5, Fig. 6 all may be used for embodiment one or implements in the vibration isolator structure of two.
Damping material of the present utility model adopts macromolecule polymeric material-polyureas, and it reacts by isocyanate component (component A) and amino-compound component (abbreviation B component) a kind of elastomer substances generated.Component A wherein can be monomer, polymer, the derivative of isocyanates, prepolymer and semi-prepolymer, and B component must be made up of Amino End Group resin and Amino End Group chain extension base.This two-component materials has high temperature resistant, corrosion-resistant, the excellent properties such as oil resistant, water-fast, ageing-resistant, resistance to alternating temperature-changing (pressure), radiation hardness, and has the features such as flash-point is high, nontoxic, environmental protection.
According to the difference of the mixing ratio of component A and B component, its form can be changed to solid elastomer from oily liquids.As damping material, the selection of its viscosity can be matched arbitrarily as required, is applicable to various structures form.
On microcosmic, its molecular weight is large, and intermolecular force is large, can provide larger intermolecular force, show to be exactly macroscopically larger damping force compared with general macromolecular material.
Laboratory data:
When applying a simple harmonic quantity displacement to the utility model damped system respectively with different loading frequency 3Hz, 4Hz and 5Hz (see Fig. 7), the curve of different frequency simple harmonic quantity displacement effect lower time and damping force is see Fig. 8.
See Fig. 9, to viscous damping, the area of hysteresis loop is the energy that each circulation damping consumes, and the relation that therefore energy and the Equivalent damping coefficient consumed is managed in damping can be expressed as
Due to excitation amplitude and frequency known, the damping force-displacement relationship curve provided by Fig. 8 can obtain the area of hysteresis loop, can obtain the Equivalent damping coefficient under each amplitude and frequency excitation thus.
From Fig. 7 ~ Fig. 9 test curve, the damping capacity of the utility model vibration isolator is stablized.By adjust structure size and viscosity of material or viscoelasticity, damping constant can reach 15 ~ 30N/mm*s, and its damping ratio can reach 0.05 ~ 0.15, and the floating plate structural vibration reduction effect that vibration isolator is made thus can reach 20 ~ 30dB.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.In addition, although employ some specific terms in this specification, these terms are only used to convenient explanation, do not form any restriction to the utility model.
Claims (38)
1. a vibration isolator, comprise spring (6) and damped system, it is characterized in that: damped system comprises piston (8), damping material (7) and damping barrel (9), wherein piston (8) is made up of two or more piston plate (12) spaced on piston rod and piston rod, damping barrel (9) is equipped with perforate (10), when piston (8) moves up and down, the perforate on logical (7) the overdamping barrel (9) of damping material moves reciprocatingly.
2. vibration isolator according to claim 1, is characterized in that: wherein piston has the structure that can adjust with damping material resistance.
3. a vibration isolator, comprise spring (6) and damped system, it is characterized in that: damped system comprises piston (8), damping material (7) and supporting frame (11), supporting frame (11) is for the displacement of limited piston horizontal direction, it comprises the column of more than two and the piston collar fixing in column upper end, wherein piston has the structure that can adjust with damping material resistance.
4. the vibration isolator according to any one of claim 2-3, is characterized in that: the structure of described adjustment and damping material resistance is: piston has at least one piston plate (12).
5. vibration isolator according to claim 4, is characterized in that: at least one piston plate (12) is provided with through hole wherein.
6. vibration isolator according to claim 4, is characterized in that: piston at least has two piston plates (12), one or two piston plate (12) is provided with through hole wherein.
7. the vibration isolator according to any one of claim 2-3, it is characterized in that: the structure of described adjustment and damping material resistance comprises: be enclosed within the piston cylinder (13) at least one piston plate (12), during piston movement, in piston cylinder (13), a certain amount of damping material (7) can be wrapped up.
8. vibration isolator according to claim 4, it is characterized in that: the structure of described adjustment and damping material resistance comprises: be enclosed within the piston cylinder (13) at least one piston plate (12), during piston movement, in piston cylinder (13), a certain amount of damping material (7) can be wrapped up.
9. vibration isolator according to claim 5, it is characterized in that: the structure of described adjustment and damping material resistance comprises: be enclosed within the piston cylinder (13) at least one piston plate (12), during piston movement, in piston cylinder (13), a certain amount of damping material (7) can be wrapped up.
10. vibration isolator according to claim 6, it is characterized in that: the structure of described adjustment and damping material resistance comprises: be enclosed within the piston cylinder (13) at least one piston plate (12), during piston movement, in piston cylinder (13), a certain amount of damping material (7) can be wrapped up.
11. vibration isolators according to claim 4, is characterized in that: the structure of described adjustment and damping material resistance comprises: at least one piston plate (12) is inverted pyramidal structures.
12. vibration isolators according to claim 5, is characterized in that: the structure of described adjustment and damping material resistance comprises: at least one piston plate (12) is inverted pyramidal structures.
13. vibration isolators according to claim 6, is characterized in that: the structure of described adjustment and damping material resistance comprises: at least one piston plate (12) is inverted pyramidal structures.
14. vibration isolators according to claim 7, is characterized in that: the structure of described adjustment and damping material resistance comprises: at least one piston plate (12) is inverted pyramidal structures.
15. vibration isolators according to claim 8, is characterized in that: the structure of described adjustment and damping material resistance comprises: at least one piston plate (12) is inverted pyramidal structures.
16. vibration isolators according to claim 9, is characterized in that: the structure of described adjustment and damping material resistance comprises: at least one piston plate (12) is inverted pyramidal structures.
17. vibration isolators according to claim 10, is characterized in that: the structure of described adjustment and damping material resistance comprises: at least one piston plate (12) is inverted pyramidal structures.
18. vibration isolators according to any one of claim 1-3, it is characterized in that: vibration isolator also comprises, the upper cylinder (2) comprise upper plate (1), being attached thereto, base plate (4), the lower cylinder body (3) be attached thereto, closed by seal ring 5 between upper lower cylinder body.
19. vibration isolators according to claim 4, it is characterized in that: vibration isolator also comprises, the upper cylinder (2) comprise upper plate (1), being attached thereto, base plate (4), the lower cylinder body (3) be attached thereto, closed by seal ring 5 between upper lower cylinder body.
20. vibration isolators according to claim 5, it is characterized in that: vibration isolator also comprises, the upper cylinder (2) comprise upper plate (1), being attached thereto, base plate (4), the lower cylinder body (3) be attached thereto, closed by seal ring 5 between upper lower cylinder body.
21. vibration isolators according to claim 6, it is characterized in that: vibration isolator also comprises, the upper cylinder (2) comprise upper plate (1), being attached thereto, base plate (4), the lower cylinder body (3) be attached thereto, closed by seal ring 5 between upper lower cylinder body.
22. vibration isolators according to claim 7, it is characterized in that: vibration isolator also comprises, the upper cylinder (2) comprise upper plate (1), being attached thereto, base plate (4), the lower cylinder body (3) be attached thereto, closed by seal ring 5 between upper lower cylinder body.
23. vibration isolators according to claim 11, it is characterized in that: vibration isolator also comprises, the upper cylinder (2) comprise upper plate (1), being attached thereto, base plate (4), the lower cylinder body (3) be attached thereto, closed by seal ring 5 between upper lower cylinder body.
24. vibration isolators according to any one of claim 1-3, is characterized in that: upper plate (1) is formed as one with upper cylinder (2) and/or base plate (4) with lower cylinder body (3), welds or is threaded.
25. vibration isolators according to claim 4, is characterized in that: upper plate (1) is formed as one with upper cylinder (2) and/or base plate (4) with lower cylinder body (3), welds or is threaded.
26. vibration isolators according to claim 5, is characterized in that: upper plate (1) is formed as one with upper cylinder (2) and/or base plate (4) with lower cylinder body (3), welds or is threaded.
27. vibration isolators according to claim 6, is characterized in that: upper plate (1) is formed as one with upper cylinder (2) and/or base plate (4) with lower cylinder body (3), welds or is threaded.
28. vibration isolators according to claim 7, is characterized in that: upper plate (1) is formed as one with upper cylinder (2) and/or base plate (4) with lower cylinder body (3), welds or is threaded.
29. vibration isolators according to claim 11, is characterized in that: upper plate (1) is formed as one with upper cylinder (2) and/or base plate (4) with lower cylinder body (3), welds or is threaded.
30. vibration isolators according to claim 18, is characterized in that: upper plate (1) is formed as one with upper cylinder (2) and/or base plate (4) with lower cylinder body (3), welds or is threaded.
31. vibration isolators according to any one of claim 1-3, is characterized in that: damping material is two component viscoelastic bodies.
32. vibration isolators according to claim 4, is characterized in that: damping material is two component viscoelastic body.
33. vibration isolators according to claim 5, is characterized in that: damping material is two component viscoelastic body.
34. vibration isolators according to claim 6, is characterized in that: damping material is two component viscoelastic body.
35. vibration isolators according to claim 7, is characterized in that: damping material is two component viscoelastic body.
36. vibration isolators according to claim 11, is characterized in that: damping material is two component viscoelastic body.
37. vibration isolators according to claim 18, is characterized in that: damping material is two component viscoelastic body.
38. vibration isolators according to claim 24, is characterized in that: damping material is two component viscoelastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667913.9U CN205064678U (en) | 2015-08-31 | 2015-08-31 | Non - sealed steel spring damping isolator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667913.9U CN205064678U (en) | 2015-08-31 | 2015-08-31 | Non - sealed steel spring damping isolator |
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| CN205064678U true CN205064678U (en) | 2016-03-02 |
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| CN201520667913.9U Active CN205064678U (en) | 2015-08-31 | 2015-08-31 | Non - sealed steel spring damping isolator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962339A (en) * | 2020-09-21 | 2020-11-20 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Nonlinear damping vibration isolator, floating plate with nonlinear damping vibration isolator and floating plate track system |
| CN112501955A (en) * | 2020-12-04 | 2021-03-16 | 华东交通大学 | Damper type floating plate rail |
| CN112900158A (en) * | 2020-12-29 | 2021-06-04 | 北京九州一轨环境科技股份有限公司 | Vibration isolator and inner sleeve thereof |
-
2015
- 2015-08-31 CN CN201520667913.9U patent/CN205064678U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962339A (en) * | 2020-09-21 | 2020-11-20 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Nonlinear damping vibration isolator, floating plate with nonlinear damping vibration isolator and floating plate track system |
| CN112501955A (en) * | 2020-12-04 | 2021-03-16 | 华东交通大学 | Damper type floating plate rail |
| CN112900158A (en) * | 2020-12-29 | 2021-06-04 | 北京九州一轨环境科技股份有限公司 | Vibration isolator and inner sleeve thereof |
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