CN203700879U - Shear hinge and rail structure - Google Patents
Shear hinge and rail structure Download PDFInfo
- Publication number
- CN203700879U CN203700879U CN201320890392.4U CN201320890392U CN203700879U CN 203700879 U CN203700879 U CN 203700879U CN 201320890392 U CN201320890392 U CN 201320890392U CN 203700879 U CN203700879 U CN 203700879U
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- Prior art keywords
- steel plate
- anchoring piece
- ballast bed
- shear hinge
- floating ballast
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Abstract
The utility model discloses a shear hinge and a rail structure, and in particular a shear hinge for the seam of a monolithic roadbed and a floating roadbed in the rail structure, and the rail structure using the shear hinge. The shear hinge comprises a first anchoring part, a second anchoring part and a sheared elastic element which are fixed on the end portion of the monolithic roadbed; the second anchoring part is anchored on the end portion opposite to the end portion of the monolithic roadbed, of the floating roadbed; the sheared elastic element is arranged in a gap between the monolithic roadbed and the floating roadbed, one end of the sheared elastic element is fixed on the first anchoring part, and the other end of the sheared elastic element is fixed on the second anchoring part. When a train passes through the seam of the monolithic roadbed and the floating roadbed, the sheared elastic element of the shear hinge disclosed by the utility model is used for transferring a shear force and allowing deformation to a certain extent, thus a settlement in the case that the end portions of the floating roadbed and the monolithic roadbed are opposite is reduced, and the stress of a steel rail and fasteners is reduced, and then the end portion of the floating roadbed can be limited to move in a vertical direction and a horizontal direction, so as to ensure the more stable running of the train.
Description
Technical field
The utility model relates to field of track traffic, is specifically related to a kind of shear hinge and uses the track structure of this shear hinge.
Background technology
In urban track traffic, in order effectively to reduce the vibration interference surrounding enviroment that produce when subway train moves, often adopt steel spring floating slab vibrating isolation system to realize the object of vibration and noise reducing.
Steel spring floating slab vibrating isolation system is by having certain mass concrete slab, and the steel spring vibration isolator with certain rigidity and damping forms.Steel spring floating slab is the elastic system that connects train and substrate, and steel spring vibration isolator is positioned in substrate, and concrete slab is upwards held up 30～40mm by steel spring vibration isolator, and steel rail laying is on concrete slab.Steel spring vibration isolator comprises support original paper-steel spring and power consumption original paper damper two parts, steel spring supports the load of concrete slab and train effectively, the vibration that internally-damped structure can produce train is effectively converted into heat energy, reaches the object that reduces train vibration.
Conventionally train rail, by adopting the solid concrete roabed being formed by the placing of concrete entirety, can adopt steel spring floating ballast bed in the section that vibration damping is had relatively high expectations.But solid concrete roabed and floating ballast bed rigidity differ greatly, train is during by solid concrete roabed and floating ballast bed seam crossing, the floating ballast bed meeting adjacent with solid concrete roabed produces larger Dynamic Subsidence amount, cause seam crossing neighbouring rail and near fastener stressed larger, thereby affect the application life of rail and near fastener, and train operation stationarity is had to certain influence.
At present solid concrete roabed adopts in the mode of floating ballast bed side increasing vibration isolator density of setting and increases floating ballast bed rigidity with floating ballast bed handover region.As normal floating ballast bed in, every the distance of two fasteners, a vibration isolator is set, and at solid concrete roabed and floating ballast bed changeover portion, every the distance of 1 fastener, a vibration isolator is set.But adopt this kind of mode, have following shortcoming:
1. still have certain distance with the nearest vibration isolator of solid concrete roabed and floating ballast bed end, in the time that train passes through, the end contacting with solid concrete roabed in floating ballast bed still can produce larger Dynamic Subsidence amount;
2. cost is high, and each junction at least needs to increase by 2 groups of totally 4 steel spring vibration isolators;
3. floating ballast bed plate end perforate is many, and floating ballast bed integrally-built fastness is produced to certain influence.
4. increase floating ballast bed after rigidity and can only limit floating ballast bed vertical downward distortion, for not restriction of vertical resilience upwards.
Utility model content
Goal of the invention of the present utility model has been to provide a kind of shear hinge that is installed on solid concrete roabed and floating ballast bed seam crossing, for at train during by solid concrete roabed and floating ballast bed seam, reduce the deflection of floating ballast bed end, train is passed through more steady, and limit floating ballast bed in vertical and level vibration to the left and right.
According to an aspect of the present utility model, a kind of shear hinge is provided, for track structure solid concrete roabed and floating ballast bed seam crossing, train rail extends along the longitudinal direction, and described shear hinge comprises:
The first anchoring piece, is fixed on the end of solid concrete roabed;
The second anchoring piece, is anchored in the floating ballast bed end relative with described solid concrete roabed end;
Cut elastic component, be arranged in described solid concrete roabed and described gap between floating ballast bed, its one end is fixed on the first anchoring piece, and the other end is fixed on the second anchoring piece, to connect described solid concrete roabed and described floating ballast bed at longitudinal direction.
Preferably, the first anchoring piece is arranged on described solid concrete roabed end edge, rail along in the sinking step surface of horizontal direction both sides.
Wherein, the first anchoring piece comprises horizontal part and vertical portion; Described horizontal part is fixed on described sinking step surface; Described vertical portion is vertically fixed on described horizontal part;
The second anchoring piece comprises anchor connection plate and anchor bar; Described anchor bar pre-buried and build in described floating ballast bed in and along the longitudinal direction extend, described anchor connection plate is fixedly connected with described anchor bar;
Described one end of being cut elastic component is fixed on described vertical portion, and the other end is fixed on described anchor connection plate.
Further, shear hinge also comprises at least one following characteristics:
The first anchoring piece also comprises the multiple reinforcing ribs that are arranged on the public vertical plane of described horizontal part and vertical portion, and described multiple reinforcing ribs are evenly distributed at horizontal direction;
Between the first anchoring piece horizontal part and sinking step surface, be provided with the force transmitting board for playing intermal force;
The service sleeve that the first anchoring piece arranges by described sinking step surface bottom and being bolted in described sinking step surface;
The outer face of the vertical portion of the first anchoring piece is provided with the first mounting groove for being cut elastic component described in fixing;
The outer face of the anchor connection plate of the second anchoring piece is provided with the second mounting groove for being cut elastic component described in fixing;
The end face of the outer face of the vertical portion of the first anchoring piece and solid concrete roabed end is in same plane;
The outer face of described anchor connection plate and the end face of described floating ballast bed end are in same plane.
Preferably, the longitudinal cross-section of described reinforcing rib is trapezoidal or triangle.
Wherein, described in, cut elastic component comprise the first steel plate, the second steel plate and be held on the first steel plate and the second steel plate between rubber pad;
The first steel plate and the second steel plate are provided with multiple through holes;
In described rubber pad, the first end face being affixed with the first steel plate be provided with the first steel plate on multiple rubber boss corresponding to multiple through holes, the second end face being affixed with the second steel plate be provided with the second steel plate on multiple rubber boss corresponding to multiple through holes;
Multiple rubber boss of described rubber pad the first end face insert in the through hole on the first steel plate and by bonding by Vulcanization on the first steel plate;
Multiple rubber boss of described rubber pad the second end face insert in the through hole on the second steel plate and by bonding by Vulcanization on the second steel plate.
Preferably,
Multiple through holes on the first steel plate and the second steel plate are circle, polygon, and are matrix shape arrangement, and described rubber pad boss is cylindrical end tangs;
Or
Multiple through holes on the first steel plate and the second steel plate are the strip hole extending along horizontal direction, and described rubber pad boss is strip boss;
Or
Multiple through holes on the first steel plate and the second steel plate are the strip hole tilting with respect to horizontal direction, and described rubber pad boss is strip boss.
As another preferred version, described in cut elastic component comprise the first steel plate, the second steel plate and be held on the first steel plate and the second steel plate between rubber pad;
The first steel plate is provided with towards the second steel plate and the first extension and the second extension that extend along the longitudinal direction;
The second steel plate is provided with towards the first steel plate and the 3rd extension extending along the longitudinal direction, and the 3rd extension inserts in the space between the first extension and the second extension, makes formation " several " font space between the first steel plate and the second steel plate;
Rubber pad be arranged in " several " font space and respectively with the first steel plate and the second steel plate bonding by Vulcanization.
According to another aspect of the present utility model, a kind of track structure is also provided, comprise solid concrete roabed and floating ballast bed, be provided with shear hinge as above at described solid concrete roabed and described floating ballast bed seam crossing.
As shown from the above technical solution, the utility model is installed in solid concrete roabed and floating ballast bed seam, at train during by solid concrete roabed and floating ballast bed seam, rubber pad Transfer of Shear in shear hinge also allows certain distortion, the floating ballast bed end relative with solid concrete roabed end Dynamic Subsidence amount under the connection of shear hinge reduces, rail and fastener are stressed to be reduced, and can limit floating ballast bed end in vertical and horizontal motion, guarantees that train operation is more steady.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described.Apparently, the accompanying drawing in below describing is only embodiment more of the present utility model, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 shows shear hinge in the utility model and is installed on the top view of solid concrete roabed and floating ballast bed seam crossing;
Fig. 2 shows in Fig. 1 A-A to sectional view;
Fig. 3 shows the STRUCTURE DECOMPOSITION figure of shear hinge;
Fig. 4 shows the structural representation that manhole is set in the first steel plate;
Fig. 5 shows the structural representation that strip hole is set in the first steel plate;
Fig. 6 shows the structural representation that inclination strip hole is set in the first steel plate;
Fig. 7 shows the structural representation of the shear hinge of another embodiment.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, referring to accompanying drawing and enumerate preferred embodiment, the utility model is further described.But, it should be noted that, many details of listing in manual are only used to make reader to have a thorough understanding to one or more aspects of the present utility model, even if do not have these specific details also can realize these aspects of the present utility model.
Structure and operating principle below by specific embodiment to shear hinge in the utility model are described in detail.
Shear hinge in the utility model is for track structure solid concrete roabed and floating ballast bed seam crossing.In the utility model, the direction parallel with train rail bearing of trend is defined as longitudinal direction, is defined as horizontal direction perpendicular to the direction of longitudinal direction.
Fig. 1 shows shear hinge in the utility model and is installed on the top view of solid concrete roabed and floating ballast bed seam crossing.
Fig. 2 shows in Fig. 1 A-A to sectional view.
Fig. 3 shows the STRUCTURE DECOMPOSITION figure of shear hinge.
As shown in Figure 1, Figure 2 and Figure 3, the shear hinge in the utility model comprises the first anchoring piece 1, the second anchoring piece 2 and is cut elastic component 3.
Edge, the rail of solid concrete roabed 4 ends are preset with sinking step surface 5 along the both sides of horizontal direction.The height of sinking step surface 5 is lower than the upper surface of solid concrete roabed 4.The first anchoring piece 1 is fixed on the sinking step surface 5 of solid concrete roabed 4 ends.The second anchoring piece 2 is anchored in floating ballast bed 6 end.Wherein, the end of solid concrete roabed 4 is relative with floating ballast bed 6 end.Cut elastic component 3 and be arranged in the gap between solid concrete roabed 4 and floating ballast bed 6, its one end is fixed on the first anchoring piece 1, and the other end is fixed on the second anchoring piece 2, to realize solid concrete roabed and the floating ballast bed connection at longitudinal direction.
Particularly, the first anchoring piece 1 comprises horizontal part 11 and vertical portion 12.Wherein, the service sleeve that horizontal part 11 arranges by sinking step surface 5 and being bolted on sinking step surface 5 is fixed on sinking step surface 5.Vertical portion 12 is vertically fixed on horizontal part 11.Preferably, the end face of the outer face of vertical portion 12 and solid concrete roabed 4 ends is in same plane.Wherein, the outer face that is vertical portion with floating ballast bed relative end face in definition vertical portion.
Further, the first anchoring piece 1 also comprises multiple reinforcing ribs 13.Multiple reinforcing ribs 13 are arranged on the public vertical plane of horizontal part 11 and vertical portion 12, for playing the intensity of reinforcing horizontal part 11 and vertical portion 12 bonding surfaces.Multiple reinforcing ribs are evenly distributed at horizontal direction, and preferably, the longitudinal cross-section of reinforcing rib is trapezoidal, triangle or other shapes.
The second anchoring piece 2 comprises anchor connection plate 21 and anchor bar 22.Anchor bar 22 is pre-buried and build in floating ballast bed 6 and extension along the longitudinal direction, and anchor connection plate 21 is fixedly connected with anchor bar 22.The end face of the outer face of anchor connection plate and floating ballast bed 6 ends is in same plane.In the utility model, in definition anchor connection plate, the end face relative with solid concrete roabed 4 is the outer face of anchor connection plate.
Cut elastic component 3 comprise the first steel plate 31, the second steel plate 32 and be held on the first steel plate and the second steel plate between rubber pad 33.The first steel plate 31 and the second steel plate 32 are provided with multiple through holes 34.In rubber pad, the first end face being affixed with the first steel plate be provided with the first steel plate on multiple rubber boss 330 corresponding to multiple through holes, the second end face being affixed with the second steel plate be provided with the second steel plate on multiple rubber boss 330 corresponding to multiple through holes.Multiple rubber boss of rubber pad the first end face insert in the through hole 34 on the first steel plate and by bonding by Vulcanization on the first steel plate 31; Multiple rubber boss of rubber pad the second end face insert in the through hole on the second steel plate 32 and by bonding by Vulcanization on the second steel plate.
Preferably, the multiple through holes on the first steel plate and the second steel plate are circle and regular polygon, and are all matrix shape arrangement, as shown in Figure 4.Rubber pad boss preferably adopts cylindrical end tangs.Rubber pad boss adopts matrix shape arrangement to make rubber pad and steel plate vulcanize more even.
As another preferred version, the multiple through holes on the first steel plate and the second steel plate also can be the strip hole extending along horizontal direction, as shown in Figure 5.Rubber pad boss is strip boss.The first steel plate train by time can bear larger pulling force, rubber pad boss adopt strip hole, can increase the pulling force of being cut elastic component, make floating ballast bed end deflection reduce, limit the floating ballast bed displacement in vertical direction.
As a preferred version again, the multiple through holes on the first steel plate and the second steel plate also can be the strip hole tilting with respect to horizontal direction, as shown in Figure 6.Rubber pad boss is strip boss.Rubber pad adopts inclination strip boss, during by solid concrete roabed and floating ballast bed seam, can limit the floating ballast bed displacement in vertical direction and horizontal direction at train, suppresses better the sinking of floating ballast bed end.
The first steel plate of being cut elastic component 3 is fixed on vertical portion 12, and the second steel plate is fixed on anchor connection plate.Preferably, the outer face of the vertical portion 12 of the first anchoring piece 1 is provided with the first mounting groove 120 for fixing the first steel plate; The outer face of the anchor connection plate of the second anchoring piece 2 is provided with the second mounting groove 20 for fixing the second steel plate.On the first steel plate and the second steel plate, being provided with screwed hole 35, the first steel plates and the second steel plate is individually fixed on vertical portion 12 and anchor connection plate by bolt.In the time being cut elastic component 3 and damaged, the replacing that can be cut elastic component 3 by removing bolt.
Further, the shear hinge in the utility model also comprises force transmitting board 14.Force transmitting board 14 is secured by bolts between the first anchoring piece 1 horizontal part 11 and sinking step surface 5, for power transmission.Meanwhile, due to the anchor connection plate of floating ballast bed end be fixed on floating ballast bed in, its arrange height with floating ballast bed height change.In track work progress, if the height of floating ballast bed 6 after jacking and solid concrete roabed 4 when inconsistent, can be floating ballast bed 6 consistent with the height of solid concrete roabed 4 by regulating the thickness of force transmitting board to make.
Fig. 7 shows the structural representation of another preferred embodiment of shear hinge.As shown in Figure 7, the first steel plate 31 of being cut elastic component 3 in shear hinge is provided with the first extension 311 and the second extension 312 towards the second steel plate 32 extension along the longitudinal direction, the first extension 311 is parallel with the second extension 312, makes the first steel plate form " ∏ " shape structural member.Preferably, the first extension and the second extension and the first steel plate 31 are one-body molded.
The second steel plate 32 is provided with the 3rd extension 321 also extending along the longitudinal direction towards the first steel plate 31, makes the second steel plate form "T"-shaped structural member.Preferably, the 3rd extension 321 and the second steel plate 32 are one-body molded.The 3rd extension 321 not exclusively inserts in the space between the first extension 311 and the second extension 312, makes formation " several " font space between the first steel plate and the second steel plate.
Rubber pad is arranged in " several " font space between the first steel plate 31 and the second steel plate 32, rubber pad respectively with the first steel plate and the second steel plate bonding by Vulcanization.Thereby make the first steel plate and the second steel plate form an entirety.
When train is during by solid concrete roabed and floating ballast bed seam, the first steel plate, the second steel plate and rubber pad are stressed, and rubber pad produces tension and compression deformation, and can stop floating ballast bed end to sink, thereby more steady when train is passed through.
In addition, rubber pad is located between the first steel plate and the second steel plate, and the overwhelming majority of rubber pad external surface can effectively completely cut off ozone, ultraviolet ray, and the first steel plate and the second steel plate can help rubber pad heat radiation, and extended the application life of rubber pad.
According on the other hand of the present utility model, also provide a kind of track structure.This track structure comprises solid concrete roabed and floating ballast bed.Be provided with above-mentioned shear hinge at solid concrete roabed and floating ballast bed seam crossing.
From above scheme, the utility model is installed in solid concrete roabed and floating ballast bed seam, at train during by solid concrete roabed and floating ballast bed seam, rubber pad Transfer of Shear in shear hinge also allows certain distortion, the floating ballast bed end relative with solid concrete roabed end Dynamic Subsidence amount under the connection of shear hinge reduces, rail and fastener are stressed to be reduced, and can limit floating ballast bed end in vertical and horizontal motion, guarantees that train operation is more steady.
The foregoing is only preferred embodiment of the present utility model, not for limiting protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a shear hinge, for track structure solid concrete roabed and floating ballast bed seam crossing, train rail extends along the longitudinal direction, it is characterized in that, and described shear hinge comprises:
The first anchoring piece, is fixed on the end of solid concrete roabed;
The second anchoring piece, is anchored in the floating ballast bed end relative with described solid concrete roabed end;
Cut elastic component, be arranged in described solid concrete roabed and described gap between floating ballast bed, its one end is fixed on the first anchoring piece, and the other end is fixed on the second anchoring piece, to connect described solid concrete roabed and described floating ballast bed at longitudinal direction.
2. shear hinge according to claim 1, is characterized in that, the first anchoring piece is arranged on described solid concrete roabed end edge, rail along in the sinking step surface of horizontal direction both sides.
3. shear hinge according to claim 2, is characterized in that:
The first anchoring piece comprises horizontal part and vertical portion; Described horizontal part is fixed on described sinking step surface; Described vertical portion is vertically fixed on described horizontal part;
The second anchoring piece comprises anchor connection plate and anchor bar; Described anchor bar pre-buried and build in described floating ballast bed in and along the longitudinal direction extend, described anchor connection plate is fixedly connected with described anchor bar;
Described one end of being cut elastic component is fixed on described vertical portion, and the other end is fixed on described anchor connection plate.
4. shear hinge according to claim 3, is characterized in that, also comprises at least one following characteristics:
The first anchoring piece also comprises the multiple reinforcing ribs that are arranged on the public vertical plane of described horizontal part and vertical portion, and described multiple reinforcing ribs are evenly distributed at horizontal direction;
The service sleeve that the first anchoring piece arranges by described sinking step surface bottom and being bolted in described sinking step surface;
The outer face of the vertical portion of the first anchoring piece is provided with the first mounting groove for being cut elastic component described in fixing;
The outer face of the anchor connection plate of the second anchoring piece is provided with the second mounting groove for being cut elastic component described in fixing;
The end face of the outer face of the vertical portion of the first anchoring piece and solid concrete roabed end is in same plane;
The outer face of described anchor connection plate and the end face of described floating ballast bed end are in same plane.
5. shear hinge according to claim 4, is characterized in that, the longitudinal cross-section of described reinforcing rib is trapezoidal or triangle.
6. shear hinge according to claim 3, is characterized in that, is provided with the force transmitting board for playing intermal force between the first anchoring piece horizontal part and sinking step surface.
7. according to arbitrary described shear hinge in claim 1 to 6, it is characterized in that, described in cut elastic component comprise the first steel plate, the second steel plate and be held on the first steel plate and the second steel plate between rubber pad;
The first steel plate and the second steel plate are provided with multiple through holes;
In described rubber pad, the first end face being affixed with the first steel plate be provided with the first steel plate on multiple rubber boss corresponding to multiple through holes, the second end face being affixed with the second steel plate be provided with the second steel plate on multiple rubber boss corresponding to multiple through holes;
Multiple rubber boss of described rubber pad the first end face insert in the through hole on the first steel plate and by bonding by Vulcanization on the first steel plate;
Multiple rubber boss of described rubber pad the second end face insert in the through hole on the second steel plate and by bonding by Vulcanization on the second steel plate.
8. shear hinge according to claim 7, is characterized in that:
Multiple through holes on the first steel plate and the second steel plate are circle, polygon, and are matrix shape arrangement, and described rubber pad boss is cylindrical end tangs;
Or
Multiple through holes on the first steel plate and the second steel plate are the strip hole extending along horizontal direction, and described rubber pad boss is strip boss;
Or
Multiple through holes on the first steel plate and the second steel plate are the strip hole tilting with respect to horizontal direction, and described rubber pad boss is strip boss.
9. according to arbitrary described shear hinge in claim 1 to 6, it is characterized in that, described in cut elastic component comprise the first steel plate, the second steel plate and be held on the first steel plate and the second steel plate between rubber pad;
The first steel plate is provided with towards the second steel plate and the first extension and the second extension that extend along the longitudinal direction;
The second steel plate is provided with towards the first steel plate and the 3rd extension extending along the longitudinal direction, and the 3rd extension inserts in the space between the first extension and the second extension, makes formation " several " font space between the first steel plate and the second steel plate;
Rubber pad be arranged in " several " font space and respectively with the first steel plate and the second steel plate bonding by Vulcanization.
10. a track structure, comprises solid concrete roabed and floating ballast bed, it is characterized in that, is provided with shear hinge as claimed in any one of claims 1-9 wherein at described solid concrete roabed and described floating ballast bed seam crossing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890392.4U CN203700879U (en) | 2013-12-31 | 2013-12-31 | Shear hinge and rail structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890392.4U CN203700879U (en) | 2013-12-31 | 2013-12-31 | Shear hinge and rail structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203700879U true CN203700879U (en) | 2014-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320890392.4U Withdrawn - After Issue CN203700879U (en) | 2013-12-31 | 2013-12-31 | Shear hinge and rail structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203700879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741560A (en) * | 2013-12-31 | 2014-04-23 | 北京九州一轨隔振技术有限公司 | Shear hinge and track structure |
| CN112523013A (en) * | 2020-12-29 | 2021-03-19 | 北京九州一轨环境科技股份有限公司 | Split vibration isolator and floating track bed |
-
2013
- 2013-12-31 CN CN201320890392.4U patent/CN203700879U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741560A (en) * | 2013-12-31 | 2014-04-23 | 北京九州一轨隔振技术有限公司 | Shear hinge and track structure |
| CN103741560B (en) * | 2013-12-31 | 2015-10-28 | 北京九州一轨隔振技术有限公司 | A kind of shear hinge and track structure |
| CN112523013A (en) * | 2020-12-29 | 2021-03-19 | 北京九州一轨环境科技股份有限公司 | Split vibration isolator and floating track bed |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20151028 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |