CN111764202A - Novel rail lower backing plate - Google Patents
Novel rail lower backing plate Download PDFInfo
- Publication number
- CN111764202A CN111764202A CN202010649604.4A CN202010649604A CN111764202A CN 111764202 A CN111764202 A CN 111764202A CN 202010649604 A CN202010649604 A CN 202010649604A CN 111764202 A CN111764202 A CN 111764202A
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- CN
- China
- Prior art keywords
- rail
- under
- backing plate
- pad
- rigidity
- 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.)
- Pending
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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
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
-
- 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
-
- 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
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
- E01B9/681—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material
-
- 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
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
- E01B9/685—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape
- E01B9/686—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape with textured surface
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The embodiment of the application discloses novel rail lower bolster for the setting is between rail and sleeper in the plane at rail lower bolster place, the rigidity of rail lower bolster is the same on the first direction, the rigidity of rail lower bolster is different on the second direction, the first direction with the second direction is perpendicular. Adopt the technical scheme that this application embodiment provided, set up the both sides of backing plate under the rail into different rigidity, during the use, place the interior survey of curve section with the great one side of rigidity, bear great pressure, place the outside at the curve section with the less one side of rigidity, bear less pressure for the whole deformation of backing plate under the rail is more even, increase of service life.
Description
Technical Field
The application relates to the technical field of rail transit, in particular to a novel rail lower base plate.
Background
The under-rail pad is made of rubber and is arranged between the steel rail and the sleeper to play the role of insulation and shock absorption.
The under-rail backing plate is generally of a uniform structure, and the rigidity of the whole under-rail backing plate is the same. In the straight section of the railway, the bearing plate under the whole rail is uniformly stressed, so that the rail bearing plate with uniform texture can obtain better effect. However, in a curve section of a railway, due to the fact that the railway is arranged to be ultrahigh in curve and influenced by centrifugal force, deformation of the inner side and the outer side of the rail lower backing plate is uneven, and one side of the rail lower backing plate is prone to being seriously abraded.
Disclosure of Invention
The embodiment of the application provides a novel rail lower backing plate to do benefit to and solve among the prior art at the curve section, rail lower backing plate atress is inhomogeneous, causes the serious problem of one side wearing and tearing of rail lower backing plate easily.
In a first aspect, an embodiment of the present application provides a novel rail lower bolster plate, which is used for being disposed between a steel rail and a sleeper, in a plane where the rail lower bolster plate is located, rigidity of the rail lower bolster plate is the same in a first direction, rigidity of the rail lower bolster plate is different in a second direction, and the first direction is perpendicular to the second direction.
Preferably, the stiffness of the under-rail pad is different in the second direction, specifically:
the rigidity of the first side of the under-rail backing plate is greater than the rigidity of the second side of the under-rail backing plate, and the first side and the second side are opposite sides in the second direction.
Preferably, the rigidity of the first side of the under-rail pad is greater than the rigidity of the second side of the under-rail pad, specifically:
one or more slots extending along the first direction are arranged on the lower pad plate of the rail;
the number of the grooves on the first side of the rail lower backing plate is less than that on the second side, so that the rigidity of the first side of the rail lower backing plate is higher than that of the second side.
Preferably, one or more rubber wires extending along the first direction are further arranged on the rail lower backing plate, and the rubber wires are detachably arranged on the rail lower backing plate;
the under-rail backing plate further comprises a steel wire, and the steel wire is used for replacing the rubber wire on the under-rail backing plate.
Preferably, the rubber wire is arranged on a first side of the rail lower backing plate, the slot is arranged on a second side of the rail lower backing plate, and projections of the rubber wire and the slot in a plane where the rail lower backing plate is located are separated.
Preferably, the rigidity of the first side of the under-rail pad is greater than the rigidity of the second side of the under-rail pad, specifically:
the rail lower backing plate is also provided with one or more rubber wires extending along the first direction, and the rubber wires are detachably arranged on the rail lower backing plate;
the under-rail backing plate further comprises a steel wire, wherein the steel wire is used for replacing a rubber wire on the under-rail backing plate, so that the rigidity of the first side of the under-rail backing plate is larger than the rigidity of the second side of the under-rail backing plate.
Preferably, the rigidity of the first side of the under-rail pad is greater than the rigidity of the second side of the under-rail pad, specifically:
one or more steel wires extending along the first direction are further arranged on the rail lower backing plate;
the number of the steel wires on the first side of the under-rail backing plate is larger than that on the second side, so that the rigidity of the first side of the under-rail backing plate is larger than that of the second side.
By adopting the scheme provided by the embodiment of the application, the method has the following advantages:
1. the two sides of the lower rail backing plate are set to have different rigidities, and when the lower rail backing plate is used, one side with larger rigidity is placed at the inner side of the curve section to bear larger pressure, and one side with smaller rigidity is placed at the outer side of the curve section to bear smaller pressure, so that the overall deformation of the lower rail backing plate is more uniform, and the service life of the lower rail backing plate is prolonged.
2. The rigidity distribution condition of the lower rail base plate is adjusted at any time through the alternation of the rubber wires and the steel wires, so that the lower rail base plate can be better suitable for different working conditions, and the different working conditions comprise different curve superelevation, different speed levels and the like.
3. After the base plate is used for a period of time, the side grinding is serious, and the traditional maintenance and repair mode is to replace a new base plate. In the embodiment of the application, the steel wire is used for replacing the rubber wire, so that the rigidity of one side of the side grinding is increased, and the service life of the base plate is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an under-rail pad provided in the prior art;
FIG. 2 is a schematic view of another prior art underbody pad construction;
fig. 3 is a schematic structural diagram of an under-rail pad provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of another tie plate under rail according to an embodiment of the present application;
the symbols in the figures are represented as: 101-rail lower backing plate, 102-groove, 103-rubber wire, 104-steel wire, x-first direction and y-second direction.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of a rail pad under rail provided in the prior art, as shown in fig. 1, the rail pad under rail 101 is a structure with uniform texture, and external forces that can be borne by different positions of the rail pad under rail 101 are the same, so that at a curved section of a railway, the influence of centrifugal force causes uneven deformation of the inside and outside of the rail pad under rail 101, which easily causes severe wear of one side of the rail pad under rail 101.
Fig. 2 is a schematic structural diagram of another under-rail pad provided in the prior art, as shown in fig. 2, in order to increase the elastic force of the under-rail pad 101, the under-rail pad 101 is provided with a series of slots 102 on the basis of the structure shown in fig. 1, the slots 102 are uniformly distributed on the under-rail pad 101, and the external forces that can be borne by different positions of the under-rail pad 101 are still the same, so that in a curved section of a railway, the inside and outside of the under-rail pad 101 are not uniformly deformed due to the influence of centrifugal force, which easily causes one side of the under-rail pad 101 to be seriously worn.
In view of the above problems, the embodiment of the present application designs a novel under-rail pad 101 for a curved section of a railway, and two sides of the novel under-rail pad 101 are configured to have different rigidities. During the use, place the one side that rigidity is great at the inside survey of curve section, bear great pressure, place the outside at the curve section with the one side that rigidity is less for rail backing plate 101 whole deformation is more even, increase of service life.
For convenience of illustration, a planar rectangular coordinate system is established in a plane where the under-rail pad 101 is located, and in the planar rectangular coordinate system, an x axis is defined as a first direction, and a y axis is defined as a second direction.
Fig. 3 is a schematic structural diagram of a rail lower pad plate provided in an embodiment of the present application, and as shown in fig. 3, a plurality of slots 102 are provided on the rail lower pad plate 101, the plurality of slots 102 extend along an x-axis direction, and from an x-axis perspective, the slots 102 on the rail lower pad plate 101 are uniformly distributed, so that the rigidity of the rail lower pad plate 101 is the same in the x-axis direction.
In addition, in the y-axis direction, the number of the slots 102 on one side of the rail lower pad 101 is smaller than that on the other side, and for convenience of description, in the embodiment of the present application, the side with the smaller number of the slots 102 is defined as a first side, and the side with the larger number of the slots 102 is defined as a second side. Since the slot 102 can reduce the rigidity of the under-rail pad 101, the rigidity of the first side is greater than that of the second side in the embodiment of the present application.
It should be noted that fig. 3 is only one possible implementation manner shown in the embodiment of the present application, and those skilled in the art can make corresponding adjustments according to actual needs, for example, changing the number, size and distribution manner of the slots 102, or changing the diameter, number of layers and the like of the steel wire. But it should fall within the scope of protection of the present application without departing from the technical idea that one side of the under-rail pad 101 is more rigid than the other side. In addition, the "one side" and the "other side" in the present application are not exactly equally divided along the y-axis direction according to the length 1/2, and the stiffness of the under-rail pad 101 may change in the second direction according to a linear relationship or a non-linear relationship, and the change relationship of the stiffness needs to be determined according to the actual working condition of the rail.
In the embodiment shown in fig. 3, after the production of the under-rail pad 101 is completed, the stiffness distribution is also determined at the same time, and cannot be adjusted any more. However, the working condition environment of the railway track is responsible for, and the requirements on the rigidity of the rail lower tie plate 101 are different under different working condition environments. In order to enable the rigidity of the under-rail pad 101 to better adapt to actual working conditions, the embodiment of the present application further provides an under-rail pad 101 with variable rigidity, as shown in fig. 4, a rubber wire 103 is further added to the under-rail pad 101 on the basis of fig. 3, the rubber wire 103 extends along the x-axis direction, and the rubber wire 103 is detachably disposed on the under-rail pad 101, in other words, the rubber wire 103 can be detached from the under-rail pad 101. The through hole of the drawing-out rubber wire 103 is used for inserting a steel wire 104 so as to increase the rigidity of the corresponding position of the under-rail pad 101.
That is to say, in this application embodiment, can be according to the operating condition, the rigidity distribution condition of adjustment rail lower bolster 101 at any time to satisfy operating condition's demand.
In a preferred embodiment of the present application, the rubber wire 103 is disposed on a first side of the rail lower cushion plate 101, the slot 102 is disposed on a second side of the rail lower cushion plate 101, and projections of the rubber wire 103 and the slot 102 on a plane where the rail lower cushion plate 101 is located are separated from each other. This arrangement can maximize the difference in stiffness between the first and second sides.
It should be noted that fig. 4 is only one possible implementation manner shown in the embodiment of the present application, and those skilled in the art can adjust the implementation manner according to actual needs, which should be considered to fall within the scope of the present application.
For example, the rail pad 101 is not provided with the slot 102, and the rigidity of the rail pad 101 is changed only by the cooperation of the rubber wire 103 and the steel wire 104. Specifically, one or more rubber wires 103 extending along the first direction are further disposed on the rail lower pad 101, and the rubber wires 103 are detachably disposed on the rail lower pad 101; the under-rail pad 101 further comprises a steel wire 104, wherein the steel wire 104 is used for replacing the rubber wire 103 on the under-rail pad 101, so that the rigidity of the first side of the under-rail pad 101 is greater than that of the second side of the under-rail pad 101.
For another example, the removable rubber wire 103 is not disposed on the rail lower pad 101, and the steel wire 104 is directly embedded in the corresponding position of the rail lower pad 101, so as to realize the difference in rigidity between the two sides of the rail lower pad 101. Specifically, one or more steel wires 104 extending along the first direction are further disposed on the under-rail pad 101; the number of the steel wires 104 on the first side of the under-rail pad 101 is greater than that on the second side, so that the stiffness of the first side of the under-rail pad 101 is greater than that on the second side.
Adopt the scheme that this application embodiment provided, set up the both sides of backing plate under the rail into different rigidity, during the use, place the interior survey of curve section with the great one side of rigidity, bear great pressure, place the outside at the curve section with the less one side of rigidity, bear less pressure for the whole deformation of backing plate under the rail is more even, increase of service life.
In addition, the rigidity distribution condition of the lower rail base plate is adjusted at any time through the alternation of the rubber wires and the steel wires, so that the lower rail base plate can be better suitable for different working conditions, and the different working conditions comprise different curve superelevation, different speed levels and the like.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (7)
1. The utility model provides a novel rail underboarding for set up between rail and sleeper, its characterized in that in the plane that rail underboarding place, the rigidity of rail underboarding is the same in the first direction, the rigidity of rail underboarding is different in the second direction, the first direction with the second direction is perpendicular.
2. The novel under-rail pad as claimed in claim 1, wherein the stiffness of the under-rail pad is different in the second direction, in particular:
the rigidity of the first side of the under-rail backing plate is greater than the rigidity of the second side of the under-rail backing plate, and the first side and the second side are opposite sides in the second direction.
3. The novel under-rail pad as claimed in claim 2, wherein the stiffness of the under-rail pad first side is greater than the stiffness of the under-rail pad second side, specifically:
one or more slots extending along the first direction are arranged on the lower pad plate of the rail;
the number of the grooves on the first side of the rail lower backing plate is less than that on the second side, so that the rigidity of the first side of the rail lower backing plate is higher than that of the second side.
4. The novel under-rail pad as claimed in claim 3,
the rail lower backing plate is also provided with one or more rubber wires extending along the first direction, and the rubber wires are detachably arranged on the rail lower backing plate;
the under-rail backing plate further comprises a steel wire, and the steel wire is used for replacing the rubber wire on the under-rail backing plate.
5. The novel under-rail pad as claimed in claim 4, wherein the rubber thread is disposed on a first side of the under-rail pad, the slot is disposed on a second side of the under-rail pad, and the rubber thread and the slot are separated from each other in a projection in a plane of the under-rail pad.
6. The novel under-rail pad as claimed in claim 2, wherein the stiffness of the under-rail pad first side is greater than the stiffness of the under-rail pad second side, specifically:
the rail lower backing plate is also provided with one or more rubber wires extending along the first direction, and the rubber wires are detachably arranged on the rail lower backing plate;
the under-rail backing plate further comprises a steel wire, wherein the steel wire is used for replacing a rubber wire on the under-rail backing plate, so that the rigidity of the first side of the under-rail backing plate is larger than the rigidity of the second side of the under-rail backing plate.
7. The novel under-rail pad as claimed in claim 2, wherein the stiffness of the under-rail pad first side is greater than the stiffness of the under-rail pad second side, specifically:
one or more steel wires extending along the first direction are further arranged on the rail lower backing plate;
the number of the steel wires on the first side of the under-rail backing plate is larger than that on the second side, so that the rigidity of the first side of the under-rail backing plate is larger than that of the second side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010649604.4A CN111764202A (en) | 2020-07-08 | 2020-07-08 | Novel rail lower backing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010649604.4A CN111764202A (en) | 2020-07-08 | 2020-07-08 | Novel rail lower backing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111764202A true CN111764202A (en) | 2020-10-13 |
Family
ID=72726477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010649604.4A Pending CN111764202A (en) | 2020-07-08 | 2020-07-08 | Novel rail lower backing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111764202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022170763A1 (en) * | 2021-02-10 | 2022-08-18 | 浙江天铁实业股份有限公司 | Rubber base plate for rail transit, preparation method and rail transit road section |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1029247A (en) * | 1961-08-18 | 1966-05-11 | Kins Developments Ltd | Improvements in or relating to mounting means for rails |
| CN1071479A (en) * | 1991-10-05 | 1993-04-28 | 北京海淀路通铁路新技术联合开发公司 | But the rubber pad placed under-neath rail of filling medium |
| DE29619480U1 (en) * | 1996-11-11 | 1997-01-09 | Hilti Ag, Schaan | Rail fastening |
| EP1041201A2 (en) * | 1999-04-01 | 2000-10-04 | BWG Butzbacher Weichenbau Gesellschaft mbH & Co. KG | Support structure for a railway track section |
| CN2818538Y (en) * | 2005-08-17 | 2006-09-20 | 铁道科学研究院金属及化学研究所 | Rubber railing cusion |
| CN201502012U (en) * | 2009-09-22 | 2010-06-09 | 中国船舶重工集团公司第七二五研究所 | Rigidity-varying pad under rail |
| CN202347370U (en) * | 2011-10-29 | 2012-07-25 | 青岛科而泰环境控制技术有限公司 | Transverse rigidity enhanced track fastener |
| CN103088722A (en) * | 2011-10-29 | 2013-05-08 | 青岛科而泰环境控制技术有限公司 | Transverse stiffness-reinforced rail fastener |
| CN203639763U (en) * | 2013-12-31 | 2014-06-11 | 浙江中元铁路配件有限公司 | Sub-rail base plate |
| CN203639762U (en) * | 2013-12-31 | 2014-06-11 | 浙江中元铁路配件有限公司 | Sub-rail base plate |
| CN204097803U (en) * | 2014-07-10 | 2015-01-14 | 江苏华兴橡胶科技有限公司 | A kind of Rubber sleeper pad |
| CN204690515U (en) * | 2015-06-11 | 2015-10-07 | 株洲时代新材料科技股份有限公司 | Composite construction heavy duty resilient sleeper-bearing |
| CN205907552U (en) * | 2016-08-23 | 2017-01-25 | 丰源盛达铁道科技有限公司 | Can be used to rubber tie plate under special rail that has a fibrous layer of high -speed railway visitor |
| CN107700285A (en) * | 2017-10-25 | 2018-02-16 | 株洲时代新材料科技股份有限公司 | Rail fastener system and its insulating method |
-
2020
- 2020-07-08 CN CN202010649604.4A patent/CN111764202A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1029247A (en) * | 1961-08-18 | 1966-05-11 | Kins Developments Ltd | Improvements in or relating to mounting means for rails |
| CN1071479A (en) * | 1991-10-05 | 1993-04-28 | 北京海淀路通铁路新技术联合开发公司 | But the rubber pad placed under-neath rail of filling medium |
| DE29619480U1 (en) * | 1996-11-11 | 1997-01-09 | Hilti Ag, Schaan | Rail fastening |
| EP1041201A2 (en) * | 1999-04-01 | 2000-10-04 | BWG Butzbacher Weichenbau Gesellschaft mbH & Co. KG | Support structure for a railway track section |
| CN2818538Y (en) * | 2005-08-17 | 2006-09-20 | 铁道科学研究院金属及化学研究所 | Rubber railing cusion |
| CN201502012U (en) * | 2009-09-22 | 2010-06-09 | 中国船舶重工集团公司第七二五研究所 | Rigidity-varying pad under rail |
| CN202347370U (en) * | 2011-10-29 | 2012-07-25 | 青岛科而泰环境控制技术有限公司 | Transverse rigidity enhanced track fastener |
| CN103088722A (en) * | 2011-10-29 | 2013-05-08 | 青岛科而泰环境控制技术有限公司 | Transverse stiffness-reinforced rail fastener |
| CN203639763U (en) * | 2013-12-31 | 2014-06-11 | 浙江中元铁路配件有限公司 | Sub-rail base plate |
| CN203639762U (en) * | 2013-12-31 | 2014-06-11 | 浙江中元铁路配件有限公司 | Sub-rail base plate |
| CN204097803U (en) * | 2014-07-10 | 2015-01-14 | 江苏华兴橡胶科技有限公司 | A kind of Rubber sleeper pad |
| CN204690515U (en) * | 2015-06-11 | 2015-10-07 | 株洲时代新材料科技股份有限公司 | Composite construction heavy duty resilient sleeper-bearing |
| CN205907552U (en) * | 2016-08-23 | 2017-01-25 | 丰源盛达铁道科技有限公司 | Can be used to rubber tie plate under special rail that has a fibrous layer of high -speed railway visitor |
| CN107700285A (en) * | 2017-10-25 | 2018-02-16 | 株洲时代新材料科技股份有限公司 | Rail fastener system and its insulating method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022170763A1 (en) * | 2021-02-10 | 2022-08-18 | 浙江天铁实业股份有限公司 | Rubber base plate for rail transit, preparation method and rail transit road section |
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Application publication date: 20201013 |