CN207109462U - It is floating ballast bed that a kind of full frequency band subtracts vibration isolation - Google Patents
It is floating ballast bed that a kind of full frequency band subtracts vibration isolation Download PDFInfo
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- CN207109462U CN207109462U CN201720459549.6U CN201720459549U CN207109462U CN 207109462 U CN207109462 U CN 207109462U CN 201720459549 U CN201720459549 U CN 201720459549U CN 207109462 U CN207109462 U CN 207109462U
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Abstract
It is floating ballast bed to subtract vibration isolation the utility model discloses a kind of full frequency band, is related to track traffic noise reduction technology field, including：Floating plate；Some spring vibration-isolators for elastic bearing floating plate, spring vibration-isolator are not provided with damping system, and axis of the spring vibration-isolator along floating plate is symmetrically set in floating plate two bottom sides, and spring vibration-isolator is located at least partially within floating plate；Some shock absorbers, shock absorber include damping system, and some shock absorbers are arranged in floating plate, and axis arranged for interval of the shock absorber along floating plate and/or are symmetrically set in floating plate both sides along the axis of floating plate.The utility model can automatically select spring vibration-isolator or shock absorber according to the size of excited frequency to carry out vibration control so that track structure has preferable effect of vibration and noise reduction in full frequency band excited frequency.
Description
Technical field
It the utility model is related to track traffic noise reduction technology field, and in particular to a kind of full frequency band subtracts the floating road of vibration isolation
Bed.
Background technology
Track traffic has the advantages that freight volume is big, punctuality rate is high, safety and comfort, the saving energy, is to alleviate current city to hand over
The effective way of logical congestion and environmental pollution, has wide market application foreground.But vibration caused by train operation is not only
The comfort level of passenger is reduced, can also be propagated through sleeper from soil layer to surrounding, and then induces the secondary vibration of building structure nearby, sternly
Ghost image rings safety, the living environment of people, the normal operation that can even disturb precision instrument of nearby buildings.《Floating plate rail
Road technical specification》It is required that for urban track traffic cause along the location of the exceeded 10dB of ambient vibration maximum Z vibration levels and the above
And the vibration and noise reducing location (such as music hall, theatre, hospital, conference centre, ancient building) of some particular/special requirements preferably uses
Floating plate track technology.
It can be seen from Fig. 1 vibration isolation general principle figure, 1) only work as frequency ratioWhen, vibrating isolation system could reach
To the effect of vibration damping, ω is the driving frequency applied, ω0For the natural frequency of vibration of vibrating isolation system, when frequency ratioWhen,
The vibrating isolation system of prior art does not have the effect of vibration and noise reducing；2) Chinese utility model patent Application No. 200580029990.
0th, all it is by damping system and spring vibration-isolator one in 200810014931.1 and 200710013713.1 three patent documents
Rise and be sealed in spring cylinder, if damping leakage or damage occurs, it is necessary to by a set of jacking apparatus by floating plate it is overall or
Person locally jacks, and spring vibration-isolator is integrally taken out, operating process is complex, is unfavorable for later maintenance；3) frequency ratioWhen, damping ratio ξ is smaller to be more advantageous to vibration and noise reducing, frequency ratioWhen, damping ratio ξ is more big more favourable
In vibration and noise reducing, the floating plate of prior art can not shoot the arrow at the target according to excited frequency difference, and effectiveness in vibration suppression is poor.
Utility model content
For defect present in prior art, the purpose of this utility model is to provide a kind of full frequency band, and to subtract vibration isolation floating
Railway roadbed, full frequency band, which can reach, preferably subtracts vibration isolating effect.
To achieve the above objectives, the utility model adopts the technical scheme that：
It is floating ballast bed that a kind of full frequency band subtracts vibration isolation, including：
Floating plate；
The spring vibration-isolator of floating plate described in some elastic bearings, the spring vibration-isolator is not provided with damping system, some
Axis of the spring vibration-isolator along the floating plate is symmetrically set in the floating plate two bottom sides, and the spring vibration-isolator
It is located at least partially within the floating plate；
Some shock absorbers, the shock absorber include damping system, and some shock absorbers are arranged in the floating plate, and
Axis arranged for interval of the shock absorber along the floating plate and/or it is symmetrically set in along the axis of the floating plate described floating
Put plate both sides.
On the basis of above-mentioned technical proposal, it is provided for installing the reserved through hole of spring vibration-isolator on the floating plate,
The inwall of the reserved through hole is embedded the first sleeve, and first sleeve lining is fixed with support stop, the spring vibration-isolator
It is connected with the support stop, the spring vibration-isolator supports the floating plate by the support stop.
On the basis of above-mentioned technical proposal, the spring vibration-isolator includes spring and pad, and the spring passes through described
Pad connects the support stop.
On the basis of above-mentioned technical proposal, the described one end of first sleeve away from the spring vibration-isolator is provided with dust cap
With jacking block, the jacking block is oppositely arranged with the support stop.
On the basis of above-mentioned technical proposal, reserved groove, the opening of the reserved groove are provided with the floating plate
Dust cap is covered with, the reserved groove forms receiving cavity with the dust cap, and the shock absorber is installed on the accommodating chamber
In vivo.
On the basis of above-mentioned technical proposal, the shock absorber includes the sealing being packaged into by second sleeve and closure
Body, the second sleeve are embedded in the reserved groove, and mass, joint spring and damping system are provided with the seal
System, the joint spring fix the mass in the seal, and the damping system is packaged in the seal.
On the basis of above-mentioned technical proposal, damping system is damping liquid, and the damping liquid is located at the seal
It is interior, and the joint spring and the mass are at least partially submerged in the damping liquid.
On the basis of above-mentioned technical proposal, damping system is viscous damper, the viscous damper and the quality
The joint spring of the block close to the closure side is in parallel.
It is provided with the basis of above-mentioned technical proposal, on the upside of the closure along axis and is used to detachable suspension ring spiral shell be installed
The lifting bolt hole of bolt.
It is described floating after the fundamental frequency of the shock absorber and the spring vibration-isolator vibration isolation on the basis of above-mentioned technical proposal
The fundamental frequency for putting plate is identical.
Compared with prior art, the utility model has the advantage of：
(1) it is floating ballast bed including spring vibration-isolator and shock absorber, Ke Yigen to subtract vibration isolation for a kind of full frequency band of the present utility model
Spring vibration-isolator or shock absorber are automatically selected according to the size of excited frequency to carry out vibration control, wherein exceedingHeight
Band excitation can eliminate the vibration of the caused track structure of high band excitation using spring vibration-isolator, be less thanLow frequency
Duan Jili can eliminate the vibration of the caused track structure of low-frequency range excitation, the fundamental frequency and spring vibration isolation of shock absorber using shock absorber
The fundamental frequency of floating plate after device vibration isolation is identical, can preferably cut down the vibration of the caused track structure of low-frequency range excitation so that
Track structure has preferable effect of vibration and noise reduction in full frequency band excited frequency.
(2) a kind of full frequency band of the present utility model subtracts that vibration isolation is floating ballast bed middle to seal spring vibration-isolator and shock absorber respectively
Dress, spring vibration-isolator and shock absorber individual packages are not susceptible to damage, service life length, when being safeguarded, it is not necessary to will be floating
Plate carries out jacking operation, simple to operate, maintains easily.
(3) a kind of full frequency band of the present utility model subtract the floating ballast bed middle shock absorber of vibration isolation damping system can increase it is floating
Plate realizes that the damping ratio damping ratio compared with the prior art in high band excitation lower railway structure subtracts in the damping ratio of fundamental frequency annex
It is small, and concentrate on the damping ratio of the damping ratio of track structure fundamental frequency compared with the prior art in low-frequency range excitation lower railway structure and increase
Greatly, there is the consumption of preferable vibration damping.
Brief description of the drawings
Fig. 1 is vibration isolation basic principle schematic；
Fig. 2 is the structural representation of floating plate in the utility model embodiment 1；
Fig. 3 is A-A sectional drawings in Fig. 2；
Fig. 4 is B-B sectional drawings in Fig. 2；
Fig. 5 is B-B sectional drawings in Fig. 2；
Fig. 6 is the enlarged drawing of spring vibration-isolator installed position in Fig. 3；
Fig. 7 is the enlarged drawing of shock absorber installed position in Fig. 4；
Fig. 8 is the enlarged drawing of shock absorber installed position in Fig. 5；
Fig. 9 is the structural representation of floating plate in the utility model embodiment 2；
Figure 10 is B-B sectional drawings in Fig. 9；
Figure 11 is B-B sectional drawings in Fig. 9；
Figure 12 is the utility model and the floating ballast bed effectiveness in vibration suppression contrast schematic diagram of tradition.
In figure：1- floating plates, 10- reserved through hole, the sleeves of 11- first, 12- support stops, 13- dust caps, 14- jacking gears
Block, 15- reserve groove, 2- spring vibration-isolators, 20- springs, 21- pads, 3- shock absorbers, 30- masses, 31- joint springs,
32a- damping liquids, 32b- viscous dampers, 33- second sleeves, 34- closures, 35- seals.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
Referring to shown in Fig. 2 to Fig. 8, the utility model embodiment provides a kind of full frequency band, and to subtract vibration isolation floating ballast bed, including：
Floating plate 1, floating plate 1 are reinforced concrete structure, can be that cast in situs can also be by the prefabricated rear transport of engineering
To job site, some reserved through hole 10 are arranged at intervals in the both sides of the axis of floating plate 1 shown in Fig. 3, it is shown in Figure 6 pre-
The inwall of through hole 10 is stayed to be embedded the first sleeve 11, the inwall of the first sleeve 11 is fixed with support stop 12, and the upper end of the first sleeve 11 is set
There are dust cap 13 and jacking block 14, jacking block 14 is oppositely arranged with support stop 12.If opened up on the upper surface of floating plate 1
Groove 15 is stayed in intervention, and axis of some reserved grooves 15 along floating plate 1 is symmetrically set in the opening of the reserved groove 15 such as both sides
Dust cap 13 is covered with, groove 15 is reserved and forms receiving cavity with dust cap 13.Reserved groove 15 in the present embodiment is ladder
Type groove, and it is larger close to the top of opening, it is smaller at bottom.The logical encapsulation of dust cap 13 is fixed on one close to opening
On level step trough, prevent foreign matter from invading.
The axis of floating plate 1 is arranged at referring to the spring vibration-isolator 2 of some elastic bearing floating plates 1 shown in Fig. 2 and Fig. 3
Both sides be equidistantly arranged at intervals in some reserved through hole 10, spring vibration-isolator 2 is not provided with damping system, bullet shown in Figure 6
Spring vibration isolator 2 includes spring 20 and pad 21, and one end of spring 20 is extended in the first sleeve 11 simultaneously from the downside of the first sleeve 11
Support stop 12 is connected by pad 21, spring 20 supports floating plate 1 by support stop 12, and the other end of spring 20 passes through spiral shell
Bolt is fixed on the basis of the lower section of floating plate 1, can prevent spring vibration-isolator 2 from sliding in the horizontal direction, and can give floating
Plate 1 provides certain horizontal rigidity.Spring 20 in the present embodiment is spiral spring.Stayed among pad 21 in the present embodiment
There is jacking through hole, support stop 12, jacking block 14 are compatible with the shape size of pad 21, and rotation can misplace overlapping.
It is arranged at intervals at referring to some shock absorbers 3 shown in Fig. 2, Fig. 4 and Fig. 5 on the axis of floating plate 1, the edge of floating plate 1
Some reserved grooves 15 for mounting dampers 3 are arranged at intervals on axis.Shock absorber 3 is fixed under dust cap 13
Side, 13 dust-proof anti-gray of dust cap, the service life of increase damper 3.Include referring to shock absorber 3 shown in Fig. 7 and Fig. 8 by second set
The seal 35 that cylinder 33 and closure 34 are packaged into, second sleeve 33 are embedded in reserved groove 15, and closure 34 passes through bolt
Reserved groove 15 is fixed on the ladder of the step groove of opening.Mass 30 is installed in seal 35, is coupled
Spring 31 and damping system, prevent shock absorber 3 from being rocked with the vibration of floating plate 1.The fixed mass block 30 of joint spring 31 in
In seal 35, damping system is packaged in seal 35.The top of closure 34 of shock absorber 3 is provided with lifting bolt along axis
Hole, by lifting bolt hole install lifting bolt be used for shock absorber 3 installation and removal arrive precalculated position, then dismantle under
Lifting bolt, corresponding bolt plug is screwed into lifting bolt hole, prevents foreign matter from causing lifting bolt hole to become rusty into screwed hole
Erosion destroys.After floating plate 1 is activated, its vibrational energy transfer to shock absorber 3, kinetic energy drives quality by joint spring 31
Block 30 vibrates, and the thermal energy consumption that the kinetic energy of mass 30 is converted into damping system is fallen.
Damping system in the present embodiment shown in Figure 7 is damping liquid 32a, and damping liquid 32a is located at shock absorber 3
Seal 35 in, and joint spring 31 and mass 30 are at least partially submerged in damping liquid 32a.Floating plate 1 is by sharp
After encouraging, its vibrational energy transfer to shock absorber 3, kinetic energy drives mass 30 to vibrate by joint spring 31, and mass 30 moves
The thermal energy consumption that damping liquid 32a can be converted into is fallen.
Damping system in the present embodiment shown in Figure 8 can also be viscous damper 32b, viscous damper 32b with
Joint spring 31 of the mass 30 close to the side of closure 34 is in parallel.After floating plate 1 is activated, its vibrational energy transfer is to subtracting
Shake device 3, and kinetic energy drives mass 30 to vibrate by joint spring 31, and the kinetic energy of mass 30 is converted into viscous damper 32b's
Thermal energy consumption is fallen.
Spring vibration-isolator 2 in the present embodiment individually encapsulates with shock absorber 3, and shock absorber 3 is upper located at floating plate 1
Side, when the damping system of shock absorber 3, which breaks down, to need repairing, it is only necessary to remove the dust cap 13 of the top of shock absorber 3, use
Lifting bolt takes out shock absorber 3, is not required to jack the taking-up spring vibration-isolator 2 of floating plate 1, simple to operate, convenient maintenance.
In the present embodiment, the fundamental frequency of shock absorber 3 is identical with the fundamental frequency of the floating plate 1 after the vibration isolation of spring vibration-isolator 2.Can be compared with
Cut down the vibration of the caused track structure of low-frequency range excitation well so that track structure have in full frequency band excited frequency compared with
Good effect of vibration and noise reduction.
Embodiment 2
Referring to shown in Fig. 2 and Fig. 9, the difference of embodiment 2 and embodiment 1 is：
Axis arranged for interval of the shock absorber 3 along floating plate 1 in embodiment 1；Referring to Figure 10 and embodiment illustrated in fig. 11 2
In axis of some shock absorbers 3 along floating plate 1 be symmetrically set in the both sides of floating plate 1, floating plate 1 along axis both sides it is symmetrical between
Every set it is some be installed on for shock absorber 3 in reserved groove 15, and the axis of reserved groove 15 and the axis of reserved through hole 10
In the plane of floating plate 1 and it is parallel to each other same.
It is shown in Figure 12, understood, implemented using embodiment 1 or the vibration attenuation mechanism contrast floating ballast bed with tradition of embodiment 2
The spring vibration-isolator 2 of example 1 or embodiment 2 can cut down the vibration of the caused track structure of high band excitation, and vibration isolating effect
It is better than that tradition is floating ballast bed, shock absorber 3 can cut down the vibration of the caused track structure of low-frequency range excitation, solve prior art
In for low-frequency range excitation be unable to the situation of vibration damping, realizing has preferable effect of vibration and noise reduction in full frequency band excited frequency.
The utility model is not limited to above-mentioned embodiment, for those skilled in the art, not
On the premise of departing from the utility model principle, some improvements and modifications can also be made, these improvements and modifications are also considered as this reality
Within new protection domain.The content not being described in detail in this specification belongs to known to professional and technical personnel in the field
Prior art.
Claims (10)
- It is floating ballast bed that 1. a kind of full frequency band subtracts vibration isolation, it is characterised in that including：Floating plate (1)；The spring vibration-isolator (2) of floating plate (1) described in some elastic bearings, the spring vibration-isolator (2) are not provided with damping system, Axis of some spring vibration-isolators (2) along the floating plate (1) is symmetrically set in the floating plate (1) two bottom sides, and The spring vibration-isolator (2) is located at least partially within the floating plate (1)；Some shock absorbers (3), the shock absorber (3) include damping system, and some shock absorbers (3) are arranged at the floating plate (1) in, and axis arranged for interval of the shock absorber (3) along the floating plate (1) and/or along the floating plate (1) Axisymmetrical is located at the floating plate (1) both sides.
- It is floating ballast bed that 2. a kind of full frequency band as claimed in claim 1 subtracts vibration isolation, it is characterised in that：Set on the floating plate (1) The reserved through hole (10) for installing spring vibration-isolator (2) is put, the inwall of the reserved through hole (10) is embedded the first sleeve (11), First sleeve (11) inwall is fixed with support stop (12), the spring vibration-isolator (2) and the support stop (12) phase Even, the spring vibration-isolator (2) supports the floating plate (1) by the support stop (12).
- It is floating ballast bed that 3. a kind of full frequency band as claimed in claim 2 subtracts vibration isolation, it is characterised in that：The spring vibration-isolator (2) Including spring (20) and pad (21), the spring (20) connects the support stop (12) by the pad (21).
- It is floating ballast bed that 4. a kind of full frequency band as claimed in claim 2 subtracts vibration isolation, it is characterised in that：First sleeve (11) is remote From the spring vibration-isolator (2) one end be provided with dust cap (13) and jacking block (14), it is described jack block (14) with it is described Support stop (12) is oppositely arranged.
- It is floating ballast bed that 5. a kind of full frequency band as claimed in claim 1 subtracts vibration isolation, it is characterised in that：Opened on the floating plate (1) There is reserved groove (15), the opening of the reserved groove (15) is covered with dust cap (13), the reserved groove (15) and institute State dust cap (13) and form receiving cavity, the shock absorber (3) is installed in the receiving cavity.
- It is floating ballast bed that 6. a kind of full frequency band as claimed in claim 5 subtracts vibration isolation, it is characterised in that：The shock absorber (3) includes The seal (35) being packaged into by second sleeve (33) and closure (34), the second sleeve (33) are embedded at described reserved recessed In groove (15), mass (30), joint spring (31) and damping system, the joint spring are installed in the seal (35) (31) in the seal (35), the damping system is packaged in the seal (35) the fixed mass (30).
- It is floating ballast bed that 7. a kind of full frequency band as claimed in claim 6 subtracts vibration isolation, it is characterised in that：Damping system is damping liquid (32a), the damping liquid (32a) is located in the seal (35), and the joint spring (31) and the mass (30) it is at least partially submerged in the damping liquid (32a).
- It is floating ballast bed that 8. a kind of full frequency band as claimed in claim 6 subtracts vibration isolation, it is characterised in that：Damping system is viscous damping Device (32b), the viscous damper (32b) are coupled bullet with the mass (30) close to the described of the closure (34) side Spring (31) is in parallel.
- It is floating ballast bed that 9. a kind of full frequency band as claimed in claim 6 subtracts vibration isolation, it is characterised in that：On the upside of the closure (34) The lifting bolt hole for being used for installing detachable lifting bolt is provided with along axis.
- It is floating ballast bed that 10. a kind of full frequency band as claimed in claim 1 subtracts vibration isolation, it is characterised in that：The base of the shock absorber (3) Frequency is identical with the fundamental frequency of the floating plate (1) after the spring vibration-isolator (2) vibration isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720459549.6U CN207109462U (en) | 2017-04-26 | 2017-04-26 | It is floating ballast bed that a kind of full frequency band subtracts vibration isolation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720459549.6U CN207109462U (en) | 2017-04-26 | 2017-04-26 | It is floating ballast bed that a kind of full frequency band subtracts vibration isolation |
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| CN207109462U true CN207109462U (en) | 2018-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-04-26 CN CN201720459549.6U patent/CN207109462U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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