CN106522034A - Floating track bed - Google Patents
Floating track bed Download PDFInfo
- Publication number
- CN106522034A CN106522034A CN201611251811.4A CN201611251811A CN106522034A CN 106522034 A CN106522034 A CN 106522034A CN 201611251811 A CN201611251811 A CN 201611251811A CN 106522034 A CN106522034 A CN 106522034A
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- CN
- China
- Prior art keywords
- floating
- floating plate
- elastic supporting
- supporting element
- ballast bed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/06—Height or lateral adjustment means or positioning means for slabs, sleepers or rails
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/12—Floating rails or sleepers
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention belongs to a railway track bed, and discloses a floating track bed. The floating track bed comprises floating slabs and elastic supporting elements. The adjacent floating slabs are connected through shearing force transmission devices. The elastic supporting elements are located between a base and the floating slabs. The floating slabs are supported on the elastic supporting elements. The floating track bed further comprises back pressure devices which comprise back pressure elastic elements and connecting pieces. One ends of the connecting pieces are fixed to the base, and the other ends of the connecting pieces are matched with the corresponding back pressure elastic elements. The floating track bed disclosed by the invention is simple in structure, system inherent frequency variation is reasonable and controllable, the vibration and noise levels are low, the vibration adsorbing and noise reducing performance is stable, the vibration isolating efficiency is high, the service life is long, the safety is better, and the floating track bed can be widely applied to track bed structures of different rail transit types including railways, metros, urban railways, elevated railways, high speed railways and the like and has wide market application prospects.
Description
Technical field
The invention belongs to railway ballast, more particularly, to a kind of track structure of railway, can be specifically railway, subway,
The railway roadbeds such as city railway, elevated railway, high-speed railway.
Background technology
Vibration and noise be it has been recognized that a kind of most commonly used public hazards in impact face, and track traffic in recent years development
The difficult problem urgently to be resolved hurrily for being faced.In the noise reduction technology of existing track traffic, practical application is the most successfully
Component livitation, it is typical that floating ballast bed technology, its vibration isolation efficiency are high, stable work in work, have become being total in the industry
Know.Particularly new prefabricated short floating plate structure it is floating ballast bed, due to fast with speed of application, prefabricated short floating plate quality has
The advantages of guarantee, being widely recognized as market and user is obtained.In such floating plate railway roadbed vibrating isolation system, how vibration isolation is realized
System frequency is stable and causes the natural frequency of vibration away from rail vehicle operation, is the key for ensureing vibration isolating effect.But
It is, as in such vibrating isolation system, Jing often will use multiple steel spring vibration isolators simultaneously, again may in each steel spring vibration isolator
Comprising multiple steel spring members, under the cumulative function of various mismachining tolerances and rigging error, the static load that floating plate deadweight is provided
Lotus cannot often realize that allowing whole or even most of steel spring members to enter born external force is directly proportional to the compression displacement of itself
The linear change stage, or even track car operation by apply it is dynamic cut lotus after, due to frequency it is higher when (such as 10Hz with
On), the amplitude of floating panel vibration is less, is still likely to occur quite a few steel spring member wholly or in part in non-linear
The working stage of change.In this case, the natural frequency of whole vibrating isolation system is in uncertain variable condition, nothing all the time
Method ensures that the natural frequency parameter of vibrating isolation system is in most reasonable level, and its vibration isolating effect cannot be realized most preferably.Additionally, prefabricated short
Floating ballast bed another problem for occurring of floating plate structure is, when rail vehicle enters fashionable from one end, due to prefabricated short floating
The lighter in weight of plate is put, seesaw effect can be produced, i.e., the other end of prefabricated short floating plate has the trend being upturned, if not
Energy effective control, the then vibration isolator for tilting side positioned at prefabricated short floating plate occur the situation of insufficient pressure, when bend is equal to
When there is the operating mode of horizontal force action, be easily caused prefabricated short floating plate displacement or vibration isolator elastic element topple etc. asks
Topic, brings potential safety hazard to daily operation.
In sum, market is maintained at zone of reasonableness in the urgent need to providing a kind of system frequency, and vibration isolating effect is more
It is stable, the more preferable new floating ballast bed system of safety.
The content of the invention
It is an object of the invention to solve the above problems, there is provided a kind of system frequency is easily controllable, vibration isolating effect is more
Guaranteed, the more preferable track of safety is floating ballast bed.
Track of the present invention is floating ballast bed to be achieved in that including floating plate and elastic supporting element, between adjacent floating plate
It is connected using Shear transfer device, elastic supporting element is located between substrate and floating plate, floating plate is supported on elastic bearing unit
On part, the elastic supporting element is at least made up of metal coil spring, it is characterised in that also including backpressure device, the back-pressure
Device includes back-pressure flexible member and connector, and connector one end is fixed in substrate, and the other end is coordinated with back-pressure flexible member,
Back-pressure flexible member back-pressure is made to act on floating plate, and force direction and elasticity of the back-pressure flexible member to floating plate
The supporting force to floating plate for holding element is in opposite direction.
The concrete form of the back-pressure flexible member is varied, and for example, which includes at least one extension spring, stretches bullet
Spring one end is connected with connector, and other end mounting is acted on floating plate, and force direction of the extension spring to floating plate
It is in opposite direction to the supporting force of floating plate with elastic supporting element；Or, back-pressure flexible member includes at least one compression spring,
Described compression spring one end back-pressure is acted on floating plate, and the other end is acted on connector, and connector is connected with substrate, and
Compression spring is in opposite direction to the force direction of floating plate and the supporting force to floating plate of elastic supporting element.To ensure to receive
Power is uniform, it is preferred that the compression spring is evenly arranged when arranging two and the above around connector.For including compression bullet
The back-pressure flexible member of spring, can also include equal pressing plate in back-pressure flexible member, equal pressing plate is placed in the end of compression spring, connects
Part is coordinated with equal pressing plate, and compression spring back-pressure is acted on floating plate.It should be noted that the back-pressure flexible member can be with
It is the extension spring of metal coil spring composition, may also be spring made by metal coil spring, macromolecular material, metal disc spring
Or the compression spring such as the complex spring that constitutes of macromolecular material and metal, using when can select according to actual needs.Additionally,
Install for convenience, can installation passage be set on floating plate, connector is arranged in installation passage.In addition, in order to just
It is spacing in back-pressure flexible member is carried out, can be provided with floating plate or/and connector back-pressure flexible member to middle limit
Position block.
The concrete form of the connector can also be varied, including screw rod, hook, the otic placode with mount hole, extension
Ring, the screw rod with adpting flange, detain connector and detain connector etc. with adpting flange, as long as can realize reliable
Connection, can realize good effect.
To improve vibration isolating effect, damping unit, the damping unit bag in elastic supporting element or/and backpressure device, are included
Include fluid pressure type damping unit, viscous damping devices, electric eddy-current damping device, magnetorheological damping device and viscoelastic damping device etc.
Various concrete forms, as long as system damping can be effectively improved, realize the quick purpose for consuming vibrational energy, can be applied to this
In the middle of invention.
Heretofore described floating plate includes plate made by armored concrete or frame structure, and armored concrete
With frame structure made by metal rod.Reserved through hole, back-pressure flexible member and elastic bearing unit can be set on floating plate
Part is arranged in reserved through hole, and bearing member is provided with reserved through hole, and central through hole, the size of central through hole are left in the middle part of bearing member
Ensure that elastic supporting element can be passed through, elastic supporting element is bearing on bearing member, and back-pressure flexible member is acted also on
Act on floating plate on bearing member and by bearing member；Or back-pressure flexible member and elastic supporting element are arranged on into one
Among individual housing, housing is solidly fixed with floating plate, and enclosure interior is provided with bearing member, and central through hole is left in the middle part of bearing member,
The Assurance of Size elastic supporting element of central through hole can be passed through, and elastic supporting element is bearing on bearing member, back-pressure bullet
Property element is acted also on bearing member and is acted on floating plate by bearing member.
As a kind of special case, backpressure device can be integrated on elastic supporting element, then by elastic supporting element and base
Bottom is fixedly linked.
It is pointed out that being based on described above, elastic supporting element and back-pressure flexible member in the present invention can both be
The groups of springs that single spring, or multiple springs are constituted, can also be the spring vibration-isolator of spring and damping unit composition.
Additionally, metal coil spring in elastic supporting element of the present invention, it is typical that helical steel springs, it is of course also possible to be spiral shell
Complex spring that rotation steel spring is collectively formed with rubber or elastane etc..
Track of the present invention is floating ballast bed, by setting up backpressure device in systems, is made using the back-pressure that backpressure device is provided
Firmly, the pretension of elastic supporting element is realized, whole or at least most of elastic supporting element the born external force of entrance and oneself is made
It is the linear change stage that the compression displacement of body is directly proportional, solid to system so as to eliminate or partially remove mismachining tolerance and rigging error
There is the impact of frequency, make the natural frequency excursion of system less, it is ensured that the floating ballast bed natural frequency ginseng of track of the present invention
Number is in reasonable controllable levels all the time, and the vibration isolating effect of system can also be fully guaranteed.Additionally, by setting up back-pressure dress
Put, the back-pressure active force provided using back-pressure flexible member is firmly pressed against elastic supporting element in substrate all the time, will not be produced
Life releases, shifts or topples, and thereby may be ensured that the floating ballast bed working condition of track of the present invention is more reliable and more stable, lifting rail
Safety during road car operation.Certainly, in order to above-mentioned purpose is better achieved, generally, should in advance to back-pressure elasticity
Element applies certain pretightning force, and in general, in backpressure device, the precommpression stroke of compression spring is should be greater than under working condition
The 110% of the maximum deflection downwards of floating plate.The downward deflection of maximum of the floating plate is from the pretension equilbrium position of floating plate
Start to calculate, the deformation of expanding with heat and contract with cold comprising plate body.
Track of the present invention is floating ballast bed, simple structure, and the natural frequency change of system is rationally controllable, vibrates and noise level
Low, vibration and noise reducing stable performance, vibration isolation efficiency are high, long service life, safety more preferably, can be widely applied to railway, subway,
In the ballast bed structure of the difference station design such as city railway, elevated railway, high-speed railway, with wide market using front
Scape.
Description of the drawings
Fig. 1 is one of floating ballast bed structural representation of track of the present invention.
A-A sectional views of the Fig. 2 for Fig. 1.
B-B sectional views of the Fig. 3 for Fig. 1.
Fig. 4 is the two of the floating ballast bed structural representation of track of the present invention.
C-C sectional views of the Fig. 5 for Fig. 4.
Fig. 6 is the three of the floating ballast bed structural representation of track of the present invention.
D-D sectional views of the Fig. 7 for Fig. 6.
Fig. 8 is the four of the floating ballast bed structural representation of track of the present invention.
E-E sectional views of the Fig. 9 for Fig. 8.
Figure 10 is the five of the floating ballast bed structural representation of track of the present invention.
F-F sectional views of the Figure 11 for Figure 12.
Figure 12 is the six of the floating ballast bed structural representation of track of the present invention.
Figure 13 is the seven of the floating ballast bed structural representation of track of the present invention.
Figure 14 is the eight of the floating ballast bed structural representation of track of the present invention.
Specific embodiment
Embodiment one
Track of the present invention is floating ballast bed as shown in Figure 1, including floating plate 41 and elastic supporting element 45, the floating plate 41
For side-mounted floating plate, it is connected using Shear transfer device 43 between adjacent floating plate 41, the Shear transfer device 43 is concrete
For middle shear hinge, as shown in Figures 2 and 3, the elastic supporting element 45 includes that helical steel springs are common with damping unit
The spring damping isolation mounting 42 of composition and pad 19 is heightened, wherein damping unit is specially viscous damping devices, spring resistance
Buddhist nun's isolation mounting 42 is located between substrate 7 and floating plate 41, and floating plate 41 is supported on spring damping vibration isolation by heightening pad 19
On device 42；Additionally, also including backpressure device 44, the backpressure device includes multiple back-pressure flexible members 4 and connector 5, its
In, back-pressure flexible member 4 is metal stretching spring, and connector 5 is the otic placode with mount hole, and connector 5 is fixed on substrate 7
On, 4 one end of back-pressure flexible member is connected with substrate 7 by connector 5, and the other end is by golden with 41 preset all-in-one-piece of floating plate
The category mounting of anchoring piece 6 is acted on floating plate 41, and constitutes the metal stretching spring of back-pressure flexible member 4 to floating plate 41
Force direction is in opposite direction to the supporting force of floating plate 41 with elastic supporting element 42.
Track of the present invention is floating ballast bed, by setting up backpressure device in systems, is made using the back-pressure that backpressure device is provided
Firmly, the pretension of elastic supporting element is realized, whole or at least most of elastic supporting element the born external force of entrance and oneself is made
It is the linear change stage that the compression displacement of body is directly proportional, solid to system so as to eliminate or partially remove mismachining tolerance and rigging error
There is the impact of frequency, make the natural frequency excursion of system less, it is ensured that the floating ballast bed natural frequency ginseng of track of the present invention
Number is in reasonable controllable levels all the time, and the vibration isolating effect of system can also be fully guaranteed.Additionally, by setting up back-pressure dress
Put, the back-pressure active force provided using back-pressure flexible member is firmly pressed against elastic supporting element in substrate all the time, will not be produced
Life releases, shifts or topples, and thereby may be ensured that the floating ballast bed working condition of track of the present invention is more reliable and more stable, lifting rail
Safety when road is runed.Certainly, in order to above-mentioned purpose is better achieved, generally, should in advance to back-pressure elasticity unit
Part applies certain pretightning force, and in general, in backpressure device, the precommpression stroke of compression spring should be greater than working condition and float downward
Put the 110% of the maximum deflection downwards of plate.Expand with heat and contract with cold deformation of the deflection comprising plate body downwards of the maximum of the floating plate.Institute
The downward deflection of maximum for stating floating plate starts to calculate from the pretension equilbrium position of floating plate, the change of expanding with heat and contract with cold comprising plate body
Shape.Using when, track structure 17 is fixed on floating plate 41.
It should be noted that in the present invention, the damping unit in elastic supporting element is except already mentioned viscous damping
Beyond device, fluid pressure type damping unit, electric eddy-current damping device, magnetorheological damping device and viscoelastic damping device are can also be
Etc. other kinds of damping unit, as long as system damping can be effectively improved, the quick purpose for consuming vibrational energy is realized, can
It is applied in the middle of the present invention；Additionally, the form of connector can also be varied, in addition to the otic placode with mount hole, it is also possible to
It is other attachment structures such as hook, link, as long as can realize being reliably connected, can act as identical effect；In addition, constituting anti-
The metal stretching spring of compression elasticity element 4, can be specifically extension spring made by the materials such as spring steel or stainless steel；Further,
Metal coil spring in elastic supporting element of the present invention, it is typical that helical steel springs, it is of course also possible to be spiral steel
The complex spring that spring is collectively formed with rubber or elastane；It may also be noted that heretofore described is floating
Putting plate includes plate made by armored concrete or frame structure, and armored concrete and framework knot made by metal rod
Structure, and the shape of floating plate can be designed as needed, it is not limited in this example diagram like that.Above technical scheme is all
Based on the simple change of the technology of the present invention principle, here is only described with word, all application claims protection domain it
In.Described above can equally be well applied to the other embodiment of the present invention, be described in this together.
Track of the present invention is floating ballast bed, simple structure, and the natural frequency change of system is rationally controllable, vibrates and noise level
Low, vibration and noise reducing stable performance, vibration isolation efficiency are high, long service life, safety more preferably, can be widely applied to railway, subway,
In the ballast bed structure of the difference station design such as city railway, elevated railway, high-speed railway, with wide market using front
Scape.
Embodiment two
Track of the present invention is floating ballast bed as shown in Figure 4 and Figure 5, and the difference with embodiment one is, on floating plate 41
Local boss 31 is provided with, installation passage 12 is additionally provided with boss 31, is given with Shear transfer device 43 between adjacent floating plate 41
Connection, Shear transfer device 43 are specially overhead shear hinge；Additionally, elastic supporting element is filled by spring damping vibration isolation in this example
Put 42, heighten pad 19 and plate end isolation mounting 46 is constituted, wherein, spring damping isolation mounting 42 is placed in housing 16, housing
16 it is preset be fixed in 41 body of floating plate, bearing member 18 is further fixedly arranged on inside housing 16, is left in the middle part of the bearing member
Central through hole, the size of central through hole should ensure that spring damping isolation mounting 42 can be passed through, spring damping isolation mounting
42 are acted on bearing member 18 by heightening pad 19, and then constitute elastic bearing to floating plate 41, and plate end isolation mounting 46 sets
Put below the plate end of adjacent floating plate 41, while carry adjacent two piece floating plate 41, which can effectively prevent floating plate
41 turn in use and stick up；In backpressure device 44, connector 5 is the screw rod with adpting flange 13, using securing member
Adpting flange 13 is fixed together by 15 with metal anchorage 14 pre-buried in substrate 7, and connector 5 is fixed on substrate 7 by realization
On, back-pressure flexible member 4 is the compression spring that helical steel springs are constituted, and the top of compression spring is additionally provided with equal pressing plate 9, connector
5 screw rod is coordinated through installation passage 12 with equal pressing plate 9, the locking nut 11 arranged using screw tip, by back-pressure elasticity unit
4 back-pressure of part is acted on the boss 31 in floating plate 41.There is unexpected altering in use to prevent back-pressure flexible member 4
It is dynamic, the centering limited block 10 of back-pressure flexible member 4 is further respectively had on boss 31 and pressing plate 9.
Track described in this example is floating ballast bed have the advantages that it is floating ballast bed same with track of the present invention described in embodiment one,
This is not repeated.Using when, track structure 17 is fixed on floating plate 41.Compared with embodiment one, skill described in this example
The great advantage of art scheme is, in this example, can just realize that the dress of spring damping isolation mounting 42 takes above floating plate 41
And adjustment, and the dress of back-pressure flexible member 4 takes and adjusts, and the space of floating plate both sides need not be taken when installing and safeguarding,
Space availability ratio is higher, and the maintaining to the later stage also brings many facilities.In addition, technical scheme is by floating described in this example
Boss 31 is set on plate 41, backpressure device is arranged on into the side of floating plate, its more compact structure is not take up floating plate top
Space.It should be noted that boss 31 both can be continuously arranged on floating plate 41, it is also possible to locally arrange on floating plate.
Embodiment three
Track of the present invention is floating ballast bed as shown in Figure 6 and Figure 7, and the difference with embodiment two is, floating plate 41
Body is provided with installation passage 12；In backpressure device 44, connector 5 is fixed on screw rod substrate 7 in by anchor structure for one end,
Back-pressure flexible member 4 is the compression spring that rubber spring is constituted, and the two ends of the rubber spring also vulcanize to be fixedly installed presses
Plate 9, the screw rod of connector 5 are arranged in installation passage 12, and which runs through floating plate 41 and back-pressure flexible member 4, using screw top
The locking nut 11 that end is arranged, makes 4 back-pressure of back-pressure flexible member act on the top surface of floating plate 41, and compression spring is to floating
The force direction for putting plate is in opposite direction with the supporting force to floating plate of elastic supporting element.
Using when, track structure 17 is fixed on floating plate 41.
Compared with embodiment two, in technical scheme described in this example, the structure of floating plate is simpler, and processing and manufacturing is more held
Easily；Further, since the rubber spring itself for constituting back-pressure flexible member 4 has good damping characteristic, therefore which can also be same
When be considered as a kind of damping unit.In theory, if rubber spring can provide enough dampings, can not also be in bullet in the present invention
In property supporting member, damping unit is additionally set again.
Example IV
Track of the present invention is floating ballast bed as shown in Figure 8 and Figure 9, and the difference with embodiment three is, adjacent floating plate 41 it
Between given with Shear transfer device 43 and connect, Shear transfer device 43 is specially middle shear hinge；Additionally, the back-pressure dress of this example
In putting, connector 5 is to detain connector with adpting flange 13, and this is detained connector and is welded by channel-section steel, using fastening
Adpting flange 13 is fixed together by part 15 with metal anchorage 14 pre-buried in substrate 7, and connector 5 is fixed on substrate by realization
On 7；In addition, back-pressure flexible member 44 is collectively constituted by 9, four compression springs 30 of equal pressing plate and damping unit 8, wherein pressing plate
9 are made up of steel plate, and compression spring 30 is specially helical steel springs, and damping unit 8 is specially fluid pressure type damping unit.Wherein,
Pressing plate 9 is placed in the two ends of compression spring 30, and connector 5 is coordinated with equal pressing plate 9, makes 30 back-pressure of compression spring act on floating plate 41
On, compression spring is in opposite direction to the supporting force of floating plate with elastic supporting element to the force direction of floating plate.In order to protect
Card back-pressure flexible member will not occur play in use, and after installing equal pressing plate 9 is weldingly fixed on connector 5
Together.
Using when, track structure 17 is fixed on floating plate 41.
Track described in this example is floating ballast bed have the advantages that it is floating ballast bed same with track of the present invention described in embodiment three,
This is not repeated.It should be noted that the compression spring in the back-pressure flexible member, in addition to helical steel springs, can be with
It is metal coil spring, spring, metal disc spring or macromolecular material made by macromolecular material and the metal composition of other materials
The compression spring such as complex spring, using when can select according to actual needs；Additionally, the damping dress included in backpressure device
Put, in addition to already mentioned fluid pressure type damping unit, can also be viscous damping devices, electric eddy-current damping device, magnetorheological
Various concrete forms such as damping unit and viscoelastic damping device, as long as system damping can be effectively improved, realize that quick consumption is shaken
The purpose of energy, can be applied in the middle of the present invention；In addition, in this example, due to containing damping in back-pressure flexible member
Device, if the needs that can meet system damping are used alone, can not still further arrange damping dress in elastic supporting element
Put, certainly, based on this know-why, if necessary, it is also possible to which damping unit is set only in elastic supporting element simultaneously.
Above technical scheme is all based on the simple change of the technology of the present invention principle, and here is only described with word, all in the present invention
Among the protection domain of requirement.Described above can equally be well applied to the other embodiment of the present invention, be described in this together.
Additionally, it is noted that based on know-why of the invention, the specific constructive form of Shear transfer device of the present invention
Can be with varied, it is not limited to the overhead shear hinge structure shown in middle shear hinge shown in Fig. 4 and Fig. 8, as long as energy
It is enough smoothly to realize shearing is transmitted between adjacent floating plate, can be applied in the present invention, this point is equally applicable to this
In bright other embodiment, it is described in this together.
Embodiment five
Track is floating ballast bed as shown in Figure 10, and the difference with example IV is that floating plate 41 is provided with boss 31；
In backpressure device, connector 5 is to detain connector made by I-steel, and the one end for detaining connector is fixed in substrate 7, back-pressure
Flexible member 4 is the compression spring that helical steel springs are constituted.4 one end of back-pressure flexible member is connected with substrate 7 by connector 5,
Other end back-pressure is acted on the boss 31 in floating plate 41.It is unexpected to prevent back-pressure flexible member 4 from occurring in use
Play, is additionally provided with the centering limited block 10 of back-pressure flexible member 4 on connector 5.
Using when, track structure 17 is fixed on floating plate 41.
Compared with example IV, the advantage of technical scheme described in this example is, by boss 31 is arranged on floating plate 41,
Backpressure device is arranged on into the side of floating plate, its more compact structure is not take up the space on floating plate top.Need explanation
It is that boss 31 both can be continuously arranged on floating plate 41, it is also possible to locally arranged on floating plate.
Embodiment six
Track of the present invention is floating ballast bed as is illustrated by figs. 11 and 12, and the difference with embodiment three is that back-pressure is elastic
Among element 44 and elastic supporting element are integrated in a housing 16, wherein, elastic supporting element is by helical steel springs 2 and heightens
Backing plate 19 is constituted, and back-pressure flexible member is by two helical steel springs, 4, two viscoelastic damping devices 8 and equal common group of pressing plate 9
Symmetrically it is evenly arranged around connector 5 into, helical steel springs 4 and viscoelastic damping device 8.Housing 16 and floating plate
41 are solidly fixed, and bearing member 18 is provided with inside housing 16, and central through hole, the size of central through hole are left in the middle part of the bearing member
Should ensure that elastic supporting element can be passed through, elastic supporting element is bearing on bearing member 18 by height adjusting cushion plate 19, even
Fitting 5 is passed through from the inner ring of helical steel springs 2, the locking nut 11 arranged using screw tip in connector 5, makes back-pressure elasticity
Element is acted also on bearing member 18 and is acted on floating plate 41 by bearing member, and back-pressure flexible member is to floating plate
Force direction it is in opposite direction to the supporting force of floating plate with elastic supporting element.
Using when, track structure is fixed on floating plate 41.
In technical scheme described in this example, two compression springs, specifically two spiral steel bombs are set in back-pressure flexible member
Spring 4, based on the know-why of this example, the compression spring in back-pressure flexible member can also arrange one, three, four even more
It is multiple, it is to ensure uniform force, it is preferred that the compression spring is evenly arranged when arranging two and the above around connector.
Certainly, for the damping unit in back-pressure flexible member is also such.Additionally, in technical scheme described in this example, it is also possible in bullet
Property supporting member in set up damping unit, for example can be using helical steel springs and rubber, elasticity PVC or elastane
Complex spring is constituted together, certainly, if elastic supporting element can provide enough dampings, can also be no longer in backpressure device
Damping unit is set, and these technical schemes are may be suitable in the present invention, also among the protection domain of application claims.
Compared with embodiment three, the maximum advantage of technical scheme described in this example is that the structure of floating plate 41 is simpler
Single, processing and manufacturing is more prone to；Additionally, connector 5 is passed through from the inner ring of helical steel springs 2, additional space is no longer taken, tied
Structure is compacter；Furthermore it is possible to the locking nut 11 on connector 5 is pulled down at any time, by back-pressure flexible member and elastic bearing unit
Opening of the part along 16 top of housing takes out.So facilitate very much in maintenance.
Embodiment seven
Track of the present invention is floating ballast bed as shown in figure 13, and the difference with embodiment six is to arrange on floating plate 41
Reserved through hole 20, back-pressure flexible member and elastic supporting element are arranged in reserved through hole, wherein, backpressure device is integrated in elasticity
On supporting member, elastic supporting element is fixedly linked with substrate.Specifically, elastic supporting element is made up of helical steel springs 2, instead
Compression elasticity element is collectively constituted by helical steel springs 4, multiple fluid pressure type damping units 8 and pressing plate 9, under connector 5
The base 50 with back-pressure flexible member is held to be fixedly connected with, base 50 is by fastening connection piece 51 and metal anchors pre-buried in substrate 7
Firmware 14 is fixed together, and connector 5 is passed through from the inner ring of helical steel springs 4, is provided with bearing member 18, holds in reserved through hole 20
Power part 18 is the boss with 41 integrated setting of floating plate, and central through hole, the size of central through hole are provided with the middle part of the bearing member
Should ensure that elastic supporting element can be passed through, elastic supporting element is bearing on bearing member 18, by connector 5, will be anti-
Pressure device is integrated on elastic supporting element, and back-pressure flexible member is acted also on bearing member 18 and acted on by bearing member 18
On floating plate 41.
Using when, track structure 17 is fixed on floating plate.Technical scheme described in this example is except with embodiment six
All advantages outside, as housing is eliminated in this example, directly the integrated setting bearing member 18 on floating plate, is related to element more
Few, structure is simpler, advantageously reduces cost, improves product service life.Certainly, based on the know-why described in this example,
Bearing member can be made using materials such as steel plate, rustless steels to be fixedly installed in the reserved through hole of floating plate again, it is also possible to play
Same effect, also among the protection domain of application claims.
Embodiment eight
As shown in figure 14 track of the present invention is floating ballast bed, and the difference with embodiment seven is, elastic supporting element bag
The complex spring 35 that two helical steel springs and elastomeric material are collectively constituted is included, the two ends of the complex spring are respectively arranged with
Crimping touch panel 36, elastic supporting element 35 are supported on the lower surface of bearing member 18, so that floating ballast bed 41 are bearing in elasticity
Hold on element；In backpressure device, connector 5 is the link being fixed in substrate 7, and back-pressure flexible member 4 is by steel spiral stretch bullet
Spring is constituted, and one end of steel spiral stretching spring is articulated on connector 5, and the other end is articulated in the pulling force arrange on baffle plate 34 and adjusts
On link 33, the baffle plate 34 is located at the upper surface of bearing member 18, and back-pressure flexible member makees power in load by 34 back-pressure of baffle plate
On part 18, and then act on floating plate 41, and force direction and elasticity of the steel spiral stretching spring 4 to floating plate 41
The force direction that element is held to counterweight element 1 is contrary.
Certainly, if necessary, it is also possible to set up between complex spring 35 and bearing member 18 and heighten pad；Additionally, based on this
The know-why of example, can also include three, four even more helical steel springs in elastic supporting element, still further not attached
Figure, also among the protection domain of application claims.
Different from embodiment seven, in this example, back-pressure flexible member employs extension spring, additionally, in elastic supporting element
Elastomeric material is additionally arranged, equivalent to being provided with damping unit, therefore backpressure device without the need for arranging damping unit again, structure is tighter
Gather, take up room less.Great advantage of the technical scheme described in this example compared with embodiment seven is, due to back-pressure flexible member
The lower section of bearing member is all disposed within elastic supporting element, therefore requisite space height is less, the thickness of floating plate can be arranged
It is relatively thin, be conducive to save space.For example in Figure 14, installation chamber 20 that baffle plate 34 is located can just be fully phased out, directly
Baffle plate 34 is arranged on into floating plate upper surface.Certainly, based on the know-why described in this example and embodiment six, it is also possible to will
Elastic supporting element and extension spring are integrated in a housing, and housing is solidly fixed with floating plate, elastic supporting element and
Extension spring is coordinated with the supporting member that arranges in housing respectively, realizes supporting and back-pressure to floating plate, can also be realized well
Effect, here are only described with word, also among the protection domain of application claims.
Track of the present invention is floating ballast bed, by setting up backpressure device in systems, is made using the back-pressure that backpressure device is provided
Firmly, the pretension of elastic supporting element is realized, whole or at least most of elastic supporting element the born external force of entrance and oneself is made
It is the linear change stage that the compression displacement of body is directly proportional, solid to system so as to eliminate or partially remove mismachining tolerance and rigging error
There is the impact of frequency, make the natural frequency excursion of system less, it is ensured that the floating ballast bed natural frequency ginseng of track of the present invention
Number is in reasonable controllable levels all the time, and the vibration isolating effect of system can also be fully guaranteed.Additionally, by setting up back-pressure dress
Put, the back-pressure active force provided using back-pressure flexible member is firmly pressed against elastic supporting element in substrate all the time, will not be produced
Life releases, shifts or topples, and thereby may be ensured that the floating ballast bed working condition of track of the present invention is more reliable and more stable, lifting rail
Safety when road is runed.Certainly, in order to above-mentioned purpose is better achieved, generally, should in advance to back-pressure elasticity unit
Part applies certain pretightning force, and in general, in backpressure device, the precommpression stroke of compression spring should be greater than working condition and float downward
Put the 110% of the maximum deflection downwards of plate.From the pretension equilbrium position of floating plate open downwards by deflection for the maximum of the floating plate
Begin to calculate, the deformation of expanding with heat and contract with cold comprising plate body.Track of the present invention is floating ballast bed, simple structure, the natural frequency change of system
It is rationally controllable, to vibrate and noise level is low, vibration and noise reducing stable performance, vibration isolation efficiency height, long service life, safety are more preferable,
Can be widely applied to the railway roadbed knot of the difference station design such as railway, subway, city railway, elevated railway, high-speed railway
In structure, with wide market application foreground.
Embodiments of the invention are primarily to the convenient know-why for understanding the present invention, it is not limited to above-described embodiment
The content of record, the technology contents that above-described embodiment is recorded can also carry out cross-reference, based on the technology of the present invention principle, ability
Field technique personnel can re-start combination or using similar technique to some of which unit to technical scheme described in above-described embodiment
Part is simply replaced, as long as the know-why based on the present invention, all among the protection domain of application claims.
Claims (15)
1. a kind of track is floating ballast bed, including floating plate and elastic supporting element, Shear transfer device is utilized between adjacent floating plate
It is connected, elastic supporting element is located between substrate and floating plate, and floating plate is supported on elastic supporting element, the elastic bearing
Element is at least made up of metal coil spring, it is characterised in that also including backpressure device, and the backpressure device includes back-pressure elasticity
Element and connector, connector one end are fixed in substrate, and the other end is coordinated with back-pressure flexible member, makes back-pressure flexible member anti-
Pressure is acted on floating plate, and back-pressure flexible member to the force direction of floating plate with elastic supporting element to floating plate
Supporting force it is in opposite direction.
2. track according to claim 1 is floating ballast bed, it is characterised in that the back-pressure flexible member includes at least one
Extension spring, extension spring one end are connected with connector, and other end mounting is acted on floating plate, and extension spring is to floating
The force direction of plate is in opposite direction to the supporting force of floating plate with elastic supporting element.
3. track according to claim 1 is floating ballast bed, it is characterised in that back-pressure flexible member includes at least one compression
Spring, described compression spring one end back-pressure are acted on floating plate, and the other end is acted on connector, connector and substrate phase
Connect, and compression spring is in opposite direction to the force direction of floating plate and the supporting force to floating plate of elastic supporting element.
4. track according to claim 3 is floating ballast bed, it is characterised in that the precompressed indention of compression spring in backpressure device
The 110% of journey deflection downwards maximum more than floating plate under working condition.
5. track according to claim 3 is floating ballast bed, it is characterised in that the compression spring include metal coil spring,
The complex spring that spring, metal disc spring or macromolecular material made by macromolecular material and metal are constituted.
6. track according to claim 3 is floating ballast bed, it is characterised in that when the compression spring arranges two and the above
It is evenly arranged around connector.
7. track according to claim 3 is floating ballast bed, it is characterised in that floating plate is provided with installation passage, and connector sets
Put in installation passage.
8. track according to claim 3 is floating ballast bed, it is characterised in that back-pressure flexible member also includes equal pressing plate, presses
Plate is placed in the end of compression spring, and connector is coordinated with equal pressing plate, and compression spring back-pressure is acted on floating plate.
9. track according to claim 3 is floating ballast bed, it is characterised in that floating plate or/and connector are provided with back-pressure bullet
The centering limited block of property element.
10. the track according to claim 1,2 or 3 is floating ballast bed, it is characterised in that connector includes screw rod, hook, band
There are the otic placode of mount hole, link, the screw rod with adpting flange, detain connector and detain connector with adpting flange.
11. tracks according to claim 1,2 or 3 are floating ballast bed, it is characterised in that the elastic supporting element or/and anti-
Damping unit is included in pressure device.
12. tracks according to claim 11 are floating ballast bed, it is characterised in that the damping unit includes that fluid pressure type is damped
Device, viscous damping devices, electric eddy-current damping device, magnetorheological damping device and viscoelastic damping device.
13. tracks according to claim 1,2 or 3 are floating ballast bed, it is characterised in that reserved through hole is arranged on floating plate, instead
Compression elasticity element and elastic supporting element are arranged in reserved through hole, be provided with bearing member, leave in the middle part of bearing member in reserved through hole
Central through hole, the Assurance of Size elastic supporting element of central through hole can be passed through, and elastic supporting element is bearing in bearing member
On, back-pressure flexible member is acted also on bearing member and is acted on floating plate by bearing member.
14. tracks according to claim 1,2 or 3 are floating ballast bed, it is characterised in that back-pressure flexible member and elastic bearing
Among element is arranged on a housing, housing is solidly fixed with floating plate, and enclosure interior is provided with bearing member, stays in the middle part of bearing member
The Assurance of Size elastic supporting element for having central through hole, central through hole can be passed through, and elastic supporting element is bearing in load
On part, back-pressure flexible member is acted also on bearing member and is acted on floating plate by bearing member.
15. tracks according to claim 1 are floating ballast bed, it is characterised in that backpressure device is integrated in elastic supporting element
On, elastic supporting element is fixedly linked with substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251811.4A CN106522034B (en) | 2016-12-30 | 2016-12-30 | Track is floating ballast bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251811.4A CN106522034B (en) | 2016-12-30 | 2016-12-30 | Track is floating ballast bed |
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| CN106522034B CN106522034B (en) | 2018-03-30 |
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Cited By (6)
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| CN108240894A (en) * | 2018-01-29 | 2018-07-03 | 西南交通大学 | Track vibration-reducing experimental rig and track vibration-reducing testing equipment |
| CN109056425A (en) * | 2018-08-27 | 2018-12-21 | 广州地铁设计研究院股份有限公司 | Frequency and the weak relationship type floating plate railway roadbed of load |
| US10407834B1 (en) | 2018-02-23 | 2019-09-10 | Sichuan University | Adaptive vibration isolator |
| CN111321635A (en) * | 2018-12-14 | 2020-06-23 | 中国铁道科学研究院集团有限公司 | Method for adjusting height of ballastless track |
| CN111764200A (en) * | 2020-07-10 | 2020-10-13 | 郑州铁路职业技术学院 | Shock attenuation formula railway rails |
| CN113250011A (en) * | 2021-05-28 | 2021-08-13 | 中南大学 | Novel subway vibration reduction track structure and vibration absorber device |
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| CN113250011A (en) * | 2021-05-28 | 2021-08-13 | 中南大学 | Novel subway vibration reduction track structure and vibration absorber device |
| CN113250011B (en) * | 2021-05-28 | 2022-03-25 | 中南大学 | Novel subway vibration reduction track structure and vibration absorber device |
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