CN108677624A - A kind of elastic bar fastener structure for minor radius rails - Google Patents
A kind of elastic bar fastener structure for minor radius rails Download PDFInfo
- Publication number
- CN108677624A CN108677624A CN201810818879.9A CN201810818879A CN108677624A CN 108677624 A CN108677624 A CN 108677624A CN 201810818879 A CN201810818879 A CN 201810818879A CN 108677624 A CN108677624 A CN 108677624A
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- Prior art keywords
- rail
- fixed seat
- gauge block
- buried
- elastic bar
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- 241001669679 Eleotris Species 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 6
- 210000005069 ears Anatomy 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
- E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a kind of elastic bar fastener structures for minor radius rails, including the rail being installed on along the longitudinal direction on sleeper support rail face, it is located on sleeper support rail face at left and right sides of rail and is correspondingly provided with pre-buried fixed seat, engage between the pre-buried fixed seat and the corresponding side surface of rail and is equipped with gauge block, it is set as extending internally and riding upon the protrusion on the upside of the rail flange of rail on the inside of gauge block, it is equipped with downward projection of jaw portion at protrusion and cooperatively forms card slot with the protrusion, the flange of rail of rail is connected in the card slot；It is set as being engaged by clamping with corresponding pre-buried fixed seat by the bayonet with the corresponding pre-buried matched bayonet of fixed seat, gauge block on the outside of gauge block；E type springs are also equipped in pre-buried fixed seat, and the attaching part pressure of e type springs is set on gauge block, the support portion of e type springs coordinates with pre-buried fixed seat apical grafting.Easy for installation, stable structure of the invention, ensure that the track structure intensity after installation.
Description
Technical field
The present invention relates to railway engineering technology fields, and in particular to a kind of elastic bar fastener structure for minor radius rails.
Background technology
Currently, railway transportation worldwide rapidly develops, a kind of basic portion of the fastener as railway rail system
Part plays the role of fixed rail, adjustment gauge, while providing cushioning effect for rail system, improves the comfort level of train.Iron
Route road fastener dosage is larger, and later maintenance cost is high, therefore, simple in structure, intensity is high, reduces later maintenance cost always
It is the developing direction of fastener.
In the construction of railway, connected using minor radius circular curve also more.And track with small-radius curve radius of curvature is small, row
Vehicle in a manner of compulsory inscribing by when, generate huge interaction force between wheel track, track geometry status caused to be difficult to keep steady
It is fixed, it easily generates track component and many diseases such as is seriously worn, especially especially show that curve foreign stock rail is super because of side wear
It limits and frequent repair, considerably increases the maintenance cost of circuit.To reinforce track with small-radius curve structural strength, slow down rail side
Mill, the service life of advancing the track improve train passage security reliability, will be adjusted in rail work progress, existing
Some fasteners cannot meet construction requirement.
Invention content
The present invention provides a kind of spring button for minor radius rails to solve shortcoming in the prior art
Part structure, easy for installation, stable structure ensure the track structure intensity after installation.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of bullet for minor radius rails
Fastener structures, including the rail that is installed on along the longitudinal direction on sleeper support rail face are located at the left and right of rail on sleeper support rail face
Both sides are correspondingly provided with pre-buried fixed seat, engage between the pre-buried fixed seat and the corresponding side surface of rail and are equipped with gauge block,
It is set as extending internally and riding upon the protrusion on the upside of the rail flange of rail on the inside of gauge block, downward projection of jaw is equipped at protrusion
Portion simultaneously cooperatively forms card slot with the protrusion, and the flange of rail of rail is connected in the card slot；Be set as on the outside of gauge block with it is corresponding
The pre-buried matched bayonet of fixed seat, gauge block are engaged by clamping by the bayonet with corresponding pre-buried fixed seat；Pre-buried fixation
Be also equipped with e type springs on seat, and the attaching part pressure of e type springs is set on gauge block, the support portion of e type springs with it is pre-buried solid
Reservation apical grafting coordinates.
The upper side of the gauge block is by middle planar portion and positioned at middle planar portion front and rear sides and is symmetrical arranged
Transition part be smoothly connected composition, the attaching part press fit of middle planar portion and e type springs, what transition part was set as tilting down
Inclined-plane makes the upper side of gauge block form intermediate structure high, both sides are low, and middle planar portion is protruded towards rail side.
The middle planar portion and transition part of the gauge block are respectively equipped with tag slot.
The gauge block is made of insulating materials.
The pre-buried fixed seat includes the body of rod being embedded in sleeper and the pedestal outside sleeper, is corresponded on the pedestal
Mounting hole equipped with front-rear direction arrangement, the mounting portion and the mounting hole of e type springs are mating.
Railway rail pad is equipped between the flange of rail and sleeper support rail face of the rail, railway rail pad is respectively arranged on the left side and the right side
Otic placode detent mechanism, otic placode detent mechanism include the ear of time interval arrangement, ear and railway rail pad be in same plane and
It is connected to one, forms the locating slot fastened with pre-buried fixed seat between the Liang Ge ears of homonymy, held on railway rail pad
The flange of rail bottom surface of pressure surface and rail is closely connected, and the lower pressure-bearing surface of railway rail pad and sleeper support rail face are closely connected.
The upper pressure-bearing surface of the railway rail pad is equipped with recessed groove or block slot, and the lower pressure-bearing surface of the railway rail pad is equipped with
Recessed groove or block slot.
The ear of the railway rail pad is equipped with tag slot.
The material of the railway rail pad is thermoplastic polyester elastomer.
Theft-prevention structure is equipped between the support portion and pre-buried fixed seat of the e types spring, theft-prevention structure includes being set to e type bullets
Retaining protrusion on the downside of support portion and the location dimples on the upside of pre-buried fixed seat, the retaining protrusion and location dimples
It is engaged by clamping；And along the length direction of e type spring support portions, retaining protrusion is divided into installation advanced side and dismounting retreats side, retaining
The installation advanced side of protrusion is seamlessly transitted with e type springs, and the dismounting of retaining protrusion retreats side and forms retaining facade with e type springs.
The beneficial effects of the invention are as follows：
The easy for installation, stable structure of the present invention, easy to disassemble, the installation suitable for track with small-radius curve is fixed, and is improved
Construction efficiency, and the structural strength of track after installation is strengthened, the service life of advancing the track improves train passage and safely may be used
By property.
Wherein, it is placed between pre-buried fixed seat and rail when gauge block is installed, the attaching part pressure of e types spring is set after assembly
In on gauge block, the support portion of e type springs coordinates with pre-buried fixed seat apical grafting, and holding and trapped orbit are played in mutual cooperation
Effect, ensure that rail is placed in the centre position of pre-buried fixed seat, and play the role of insulation.The upper side shape of gauge block
At the low structure in intermediate high, both sides, the attaching part of e type springs slides onto middle planar portion through transition part when installation, makes e type springs
It is further deformed, to make to be formed larger interaction force between e types spring and gauge block, ensures the fixation to rail
Effect；And middle planar portion is protruded towards rail side, keeps the compression joint area of gauge block and rail larger, is further increased pair
The fixed function of rail.
It is equipped with theft-prevention structure between the support portion and pre-buried fixed seat of the e types spring, realizes the antitheft guarantor to spring
Shield, reduces maintenance cost.When e type springs are inwardly installed, installation advanced side is slided with cooperation on the upside of pre-buried fixed seat, until only
It moves back protrusion to be moved at location dimples, and so that retaining protrusion is formed clamping with location dimples under the elastic reaction of e type springs and match
It closes, it is easy for installation；The retaining facade that the dismounting of retaining protrusion retreats at side at this time is contacted with location dimples, can be prevented
The dismounting of e type springs retreats, it is necessary to e type springs can be just disassembled under the action of specific purpose tool, so as to avoid e type springs
It falls off or is stolen and lose.
Description of the drawings
Fig. 1 is the assembling vertical view of elastic bar fastener in embodiment one；
Fig. 2 is A-A diagrammatic cross-sections in Fig. 1；
Fig. 3 is the vertical view of gauge block in Fig. 1；
Fig. 4 is B-B diagrammatic cross-sections in Fig. 3；
Fig. 5 is the right view of Fig. 3；
Fig. 6 is the vertical view of railway rail pad in Fig. 1；
Fig. 7 is C-C partial cutaway views in Fig. 6；
Fig. 8 is the front view of pre-buried fixed seat in Fig. 1；
Fig. 9 is D-D diagrammatic cross-sections in Fig. 8；
Figure 10 is E-E diagrammatic cross-sections in Fig. 8；
Figure 11 is the right view of Fig. 8；
Figure 12 is F-F diagrammatic cross-sections in Figure 11；
Figure 13 is the left view of Fig. 8；
Figure 14 is the assembling schematic diagram of elastic bar fastener in embodiment two；
Figure 15 is the enlarged drawing at G in Figure 14.
Specific implementation mode
It elaborates to the specific implementation mode of the present invention below in conjunction with attached drawing.
Embodiment one：
As shown in figure 1 to figure 13, a kind of elastic bar fastener structure for minor radius rails of the invention, including along front and back
To the rail 5 being installed on sleeper support rail face, the left and right sides on sleeper support rail face positioned at rail 5 is correspondingly provided with pre-buried fixed seat
1.Between pre-buried fixed seat 1 and the corresponding side surface of rail 5 engage be equipped with gauge block 2, play the role of insulation, it is fixed.Rail
It is set as extending internally and riding upon the protrusion 21 on the upside of the rail flange of rail away from 2 inside of block, is equipped with and is downwardly projected at protrusion 21
Jaw portion 22 and cooperatively form card slot with the protrusion 21, the flange of rail of rail 5 is connected in the card slot；The outside of gauge block 2
It is set as blocking with corresponding pre-buried fixed seat 1 by the bayonet 23 with the corresponding pre-buried matched bayonet 23 of fixed seat, gauge block 2
Connect cooperation；E types spring 3 is also equipped in pre-buried fixed seat 1, and the attaching part pressure of e types spring 3 is set on gauge block 2, e types
The support portion of spring 3 coordinates with 1 apical grafting of pre-buried fixed seat.
In the present embodiment, the upper side of gauge block 2 is by middle planar portion 24 and positioned at before and after middle planar portion 24 two
Side and symmetrically arranged transition part 25 are smoothly connected composition, the attaching part press fit of middle planar portion 24 and e types spring 3, mistake
The inclined-plane that portion 25 is set as tilting down is crossed, the upper side of gauge block is made to form intermediate structure high, both sides are low, e types spring 3
Attaching part slides onto middle planar portion 24 through transition part 25, and e types spring 3 is made further to be deformed, to make e types spring 3 with
Larger interaction force is formed between gauge block 2, ensures the fixed function to rail；And middle planar portion 24 is towards rail one
Side protrudes, and keeps the compression joint area of gauge block and rail larger, further increases the fixed function to rail.
Gauge block 2 is made of insulating materials, and the middle planar portion 24 of gauge block and transition part 25 are respectively equipped with mark
Know area, is equipped with permanent emblem mark, model, lot number in tag slot, is convenient for circuit onsite lookup, enhance trackability.
In the present embodiment, between the flange of rail and sleeper support rail face of the rail 5 be equipped with railway rail pad 4, play buffering and/or
Electric insulation effect.Railway rail pad 4 is respectively arranged on the left side and the right side otic placode detent mechanism, and otic placode detent mechanism includes time interval
The ear 41 of arrangement, ear 41 are in same plane with railway rail pad 4 and are connected to one, the Liang Ge ears 41 of homonymy it
Between formed with pre-buried fixed seat 1 fasten locating slot, the upper pressure-bearing surface of railway rail pad 4 and the flange of rail bottom surface of rail 5 are closely connected, under rail
The lower pressure-bearing surface of backing plate 4 and sleeper support rail face are closely connected.
According to rigidity Design, the upper pressure-bearing surface of railway rail pad 4 is equipped with recessed groove or block slot, is held under railway rail pad 4
Pressure surface is equipped with recessed groove or block slot.Two ear sides of railway rail pad are additionally provided with tag slot, and permanent factory is equipped in tag slot
Mark, model, lot number are convenient for circuit onsite lookup, enhance trackability.
In the present embodiment, the material of railway rail pad 4 is thermoplastic polyester elastomer, the compression set of railway rail pad 4
It is not greater than 50%, insulation resistance is not less than 108Ω。
In the present embodiment, pre-buried fixed seat 1 includes being embedded in the body of rod 19 in sleeper and the pedestal outside sleeper 11,
The mounting hole 12 of front-rear direction arrangement is correspondingly provided on the pedestal 11, the mounting portion of e types spring 3 is matched with 12 grafting of mounting hole
It closes.
The body of rod 19 includes the flat part of downside and connects the diffuser of flat part and pedestal, and flat part is from bottom to up
It is sequentially connected and is formed by insertion section 13, arc interconnecting piece 15, laterally protruding portion 15 and docking section 16, insertion section 13 is to be downwardly projected
Arc convex, laterally protruding portion 15 protrudes the flat part laterally outward, and arc interconnecting piece 15 is smoothly connected the insertion section
13 and laterally protruding portion 15, and the left and right opposite sides of arc interconnecting piece is set as concave arc structure.
For diffuser including two in the symmetrically arranged connecting plate 17 of front-rear direction, contraction is mutually drawn close simultaneously in the lower end of two connecting plates 17
It is smoothly connected with the docking section 16 of flat part, the arc-shaped flaring in upper end of two connecting plates 17 is mutually detached and fixed with pedestal 11 outward
Connection；It is connected with reinforcing plate 18 between two connecting plates 17, loss of weight fabrication hole can be set in reinforcing plate 18.
It is closer that the above structure of the body of rod makes it be combined with the connection of sleeper, ensures it to the support of pedestal and fixed effect
Fruit, and then ensure basic fixed function of the pre-buried fixed seat to rail.And the midline of body of rod front and rear sides is opposite to be equipped with edge
The spine that body of rod length direction extends, to enhance the structural strength of body of rod itself.
The easy for installation, stable structure of the present invention, easy to disassemble, the installation suitable for track with small-radius curve is fixed, and is carried
High construction efficiency, and the structural strength of track with small-radius curve after installation is strengthened, the service life of advancing the track improves
Train passage security reliability.
Embodiment two：
As shown in Figure 14 to Figure 15, the embodiment and embodiment one the difference is that：The support portion of e types spring 3 with it is pre-buried
Theft-prevention structure is equipped between fixed seat 1, theft-prevention structure includes the retaining protrusion 6 being set on the downside of 3 support portion of e types spring and is set to
Location dimples 7 on the upside of pre-buried fixed seat, the retaining protrusion 6 are engaged by clamping with location dimples 7；And along 3 support portion of e types spring
Length direction, 6 points of retaining protrusion retreats side, the installation advanced side 61 of retaining protrusion 6 and e type bullets for installation advanced side and dismounting
Item seamlessly transits, and the dismounting of retaining protrusion 6 retreats side 62 and forms retaining facade with e type springs.
When e types spring 3 is inwardly installed, installation advanced side is slided with cooperation on the upside of pre-buried fixed seat, until retaining protrusion 6 is moved
It moves to location dimples 7, and so that retaining protrusion 6 is formed with location dimples 7 under the elastic reaction of e types spring 3 and be engaged by clamping, this
When retaining protrusion 6 the retaining facade that retreats at side 62 of dismounting contacted with location dimples 7, tearing open for e types spring 3 can be prevented
Unload retrogressing, it is necessary to can just disassemble e type springs under the action of specific purpose tool, realize the anti-theft protection to e type springs.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Still can the present invention be modified or be waited
With replacing, without departing from the spirit or scope of the invention, or any substitutions, the power in the present invention should all be covered
In sharp claimed range.
In the description of the present invention, it is to be understood that, term "front", "rear", "left", "right", "upper", "lower", etc. fingers
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings, and is only that the present invention and simplification are retouched for ease of description
It states, rather than indicates or imply signified device or element must have a particular orientation, be specific azimuth configuration and operation,
It thus should not be understood as the limitation to present invention protection content.
Claims (10)
1. a kind of elastic bar fastener structure for minor radius rails, including be installed on along the longitudinal direction on sleeper support rail face
Rail is located on sleeper support rail face at left and right sides of rail and is correspondingly provided with pre-buried fixed seat, it is characterised in that：The pre-buried fixation
Engage between seat and the corresponding side surface of rail and be equipped with gauge block, is set as extending internally and rides upon rail on the inside of gauge block
Protrusion on the upside of the flange of rail is equipped with downward projection of jaw portion at protrusion and cooperatively forms card slot, the rail of rail with the protrusion
Bottom is connected in the card slot；It is set as passing through with the corresponding pre-buried matched bayonet of fixed seat, gauge block on the outside of gauge block
The bayonet is engaged by clamping with corresponding pre-buried fixed seat；It is also equipped with e type springs in pre-buried fixed seat, and e type springs are withheld
Portion's pressure is set on gauge block, and the support portion of e type springs coordinates with pre-buried fixed seat apical grafting.
2. the elastic bar fastener structure according to claim 1 for minor radius rails, it is characterised in that：The gauge
The upper side of block is smoothly connected by middle planar portion and positioned at middle planar portion front and rear sides and symmetrically arranged transition part
Composition, the attaching part press fit of middle planar portion and e type springs, transition part are set as the inclined-plane tilted down, make gauge block
Upper side form structure intermediate high, that both sides are low, and middle planar portion is protruded towards rail side.
3. the elastic bar fastener structure according to claim 2 for minor radius rails, it is characterised in that：The gauge
The middle planar portion and transition part of block are respectively equipped with tag slot.
4. the elastic bar fastener structure according to claim 3 for minor radius rails, it is characterised in that：The gauge
Block is made of insulating materials.
5. being used for the elastic bar fastener structure of minor radius rails according to claim 1-4 any one of them, it is characterised in that：
The pre-buried fixed seat includes the body of rod being embedded in sleeper and the pedestal outside sleeper, is correspondingly provided on the pedestal front and back
The mounting hole of direction arrangement, the mounting portion and the mounting hole of e type springs are mating.
6. being used for the elastic bar fastener structure of minor radius rails according to claim 1-4 any one of them, it is characterised in that：
Railway rail pad is equipped between the flange of rail and sleeper support rail face of the rail, railway rail pad is respectively arranged on the left side and the right side otic placode positioning
Mechanism, otic placode detent mechanism include the ear of time interval arrangement, and ear is in same plane with railway rail pad and is fixedly connected
It is integrated, forms the locating slot fastened with pre-buried fixed seat, the upper pressure-bearing surface and steel of railway rail pad between the Liang Ge ears of homonymy
The flange of rail bottom surface of rail is closely connected, and the lower pressure-bearing surface of railway rail pad and sleeper support rail face are closely connected.
7. the elastic bar fastener structure according to claim 6 for minor radius rails, it is characterised in that：Under the rail
The upper pressure-bearing surface of backing plate is equipped with recessed groove or block slot, and the lower pressure-bearing surface of the railway rail pad is equipped with recessed groove or block
Slot.
8. the elastic bar fastener structure according to claim 7 for minor radius rails, it is characterised in that：Under the rail
The ear of backing plate is equipped with tag slot.
9. the elastic bar fastener structure according to claim 7 for minor radius rails, it is characterised in that：Under the rail
The material of backing plate is thermoplastic polyester elastomer.
10. the elastic bar fastener structure according to claim 1 for minor radius rails, it is characterised in that：The e types
Theft-prevention structure is equipped between the support portion of spring and pre-buried fixed seat, theft-prevention structure includes being set on the downside of e type spring support portions
Retaining protrusion and the location dimples on the upside of pre-buried fixed seat, the retaining protrusion are engaged by clamping with location dimples；And along e
The length direction of type spring support portion, retaining protrusion is divided into installation advanced side and dismounting retreats side, and the installation of retaining protrusion is advanced
Side is seamlessly transitted with e type springs, and the dismounting of retaining protrusion retreats side and forms retaining facade with e type springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818879.9A CN108677624A (en) | 2018-07-24 | 2018-07-24 | A kind of elastic bar fastener structure for minor radius rails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818879.9A CN108677624A (en) | 2018-07-24 | 2018-07-24 | A kind of elastic bar fastener structure for minor radius rails |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108677624A true CN108677624A (en) | 2018-10-19 |
Family
ID=63814828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810818879.9A Pending CN108677624A (en) | 2018-07-24 | 2018-07-24 | A kind of elastic bar fastener structure for minor radius rails |
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| Country | Link |
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| CN (1) | CN108677624A (en) |
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| CN205636372U (en) * | 2016-03-10 | 2016-10-12 | 瑞泰潘得路铁路技术（武汉）有限公司 | EVA rail lower bolster |
| CN207159714U (en) * | 2017-03-29 | 2018-03-30 | 安阳市铁路器材有限责任公司 | A kind of subway fastener system |
| CN207391942U (en) * | 2017-07-26 | 2018-05-22 | 洛阳科博思新材料科技有限公司 | A kind of preburied iron base and fastener system |
| CN208604417U (en) * | 2018-07-24 | 2019-03-15 | 中原利达铁路轨道技术发展有限公司 | A kind of elastic bar fastener structure for minor radius rails |
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