CN110172876A - A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate - Google Patents
A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate Download PDFInfo
- Publication number
- CN110172876A CN110172876A CN201910618255.7A CN201910618255A CN110172876A CN 110172876 A CN110172876 A CN 110172876A CN 201910618255 A CN201910618255 A CN 201910618255A CN 110172876 A CN110172876 A CN 110172876A
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- Prior art keywords
- clamping plate
- rail
- line
- fold
- micro
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- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 22
- 230000007704 transition Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 238000003556 assay Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005498 polishing Methods 0.000 description 10
- 238000000227 grinding Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance 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
- E01B11/00—Rail joints
Abstract
The invention discloses a kind of micro- fold-line-shaped railway track joints of 60Kg/m to freeze clamping plate, the clamping plate includes two parts, is separately connected relayable rail and new rail, this two parts clamping plate is micro- fold-line-shaped structure, so that this two parts clamping plate is formed height difference, and uses arc transition at broken line；Every splint segment is horizontally disposed multiple connecting holes, and the center line of the connecting hole on two parts clamping plate is not on same center line.Beneficial effect is: by the way that joint bar is designed as broken line type, assist thermoplastic's elastomer backing plate simultaneously, pass through different broken line height differences, quickly adjustment joint location, reach new relayable rail and couples smooth purpose, in skylight finite time, reduce the workload polished along slope, improves operation quality and efficiency.Micro- fold-line-shaped railway track joint freeze clamping plate can be not only used for switching tracks overhaul new rail and old rail couple can also be used for track switch overhaul newly replace before and after track switch with just have coupling for route, can be not only used for temporarily coupling, permanently cementing can also be used for a long time on the line.
Description
Technical field
The present invention relates to railway track joints to freeze clamping plate field, and in particular to a kind of micro- fold-line-shaped railway track of 60Kg/m
Connector freezes clamping plate.
Background technique
Rail on rail track by train wheel due to being rolled, and as the service time extends, rail head has different journeys
The abrasion of degree.When maintenance replacement rail, new relayable rail engaging portion (new rail and track switch stock rail between/new rail with
Between the rail of track switch buffer area) generally existing height difference.In general, service life differs longer rail, and height difference is in grade
More than.Due to the presence of height difference between rail, running train can increase the impact to rail engaging portion, accelerate rail joint failure,
The deformation of Rail inspection influences the stability of line tower foundation, when serious, train is caused to shake vehicle.Therefore, " rule are repaired " to difference
Route rail joint top surface, the inside of speed class value of grinding one's teeth have a stringent regulation: rail joint top surface or inside are ground one's teeth speed
Degree is greater than 120km/h section and is not more than 1mm, and speed is less than or equal to 120km/h section and is not more than 2mm, line facility overhaul and dimension
Repairing acceptance criteria requires connector rail level and inside to grind one's teeth and be not greater than 1mm.Currently, bulk freezing clamping plate can guarantee rail end not
Energy is lateral and is individually moved up and down, but does not eliminate height difference.
In order to guarantee that train smooth is run, influence of the wheel to the impact of rail and to line tower foundation stability, mesh are reduced
The method of the preceding domestic processing exceeded height difference of rail is mainly that manual polishing smoothly transits.By the requirement to Track regularity, overhaul
Suitable ratio of slope of the connection in location and non-overhaul location along slope are as follows: route of the permissible velocity no more than 120km/h should not exceed
2.0 ‰, permissible velocity is free of for 120km/h() route of~160km/h should not exceed 1.0 ‰, and permissible velocity is greater than 160km/h
Route should not exceed 0.8 ‰.When height difference is more than 1mm or more, need to be polished flat suitable, heavy workload on a large scale, and it is flat to polish
It is pliable not easy to control, high quality is difficult in Window time and eliminates exceeded height difference between new relayable rail.Therefore, using in Window time
The method that interior manual polishing smoothly transits guarantees that there are certain difficulties for rail engaging portion ride comfort.In addition, with down grinding rail
The problem of handling the method for new and old rail connector height difference there is also waste of material, in the operation that switches tracks, it is due to more renewing rail overhaul
Promote operation at section daily, because ride comfort need the new rail end polished can with the new rail that replaces with there are height differences, will be unable to
It is directly welded, otherwise commissure meeting height mismatch, joint appearance overstep the bounds, it is therefore desirable to which the rail for cutting away down grinding causes
Human and material resources, the waste on the activity duration.
Summary of the invention
It is connect the object of the invention is that providing a kind of micro- fold-line-shaped railway track of 60Kg/m to solve the above-mentioned problems
Head freezes clamping plate, can adjust the height of new relayable rail, and reduction is polished flat suitable workload.
The present invention through the following technical solutions to achieve the above objectives:
A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate, which includes two parts, be separately connected relayable rail and
New rail, this two parts clamping plate are micro- fold-line-shaped structure, so that this two parts clamping plate is formed height difference, and use circular arc mistake at broken line
It crosses；Every splint segment is horizontally disposed, and there are three connecting holes, and the center line of the connecting hole on two parts clamping plate is not or not same center
On line.
Using above technical scheme, the cleat design is fold-line-shaped, can adjust the height of new relayable rail, make new rail
With the rail head either flush of relayable rail, tyre tread smooth degree can be controlled within 0.5mm, reduction is polished flat suitable workload.
If control of grinding one's teeth, in 0.5mm, length of polishing can fast implement and the control of connector smooth degree is existed by polishing based on 1.0m
0.125mm/m；And the two-part connection centerline hole of clamping plate can guarantee clamping plate and new relayable rail not on same center line
Bonding strength.
Arc transition is used at cleat center-line broken line, when stress avoids stress from concentrating.Clamping plate overall performance passes through computer
Finite element simulation simulates force analysis, calculates the optimal arc transition of bending part and outer dimension.
Further, two parts clamping plate height difference D of fold-line-shaped is 1mm-3mm.60Kg/m clamping plate can design three specifications, can
Height difference 1mm, 2mm and 3mm are adjusted, tyre tread smooth degree can be controlled within 0.5mm, reduction is polished flat suitable workload.Such as
Fruit grinds one's teeth control in 0.5mm, and length of polishing can fast implement and the control of connector smooth degree is existed by polishing based on 1.0m
0.125mm/m。
Preferably, the rail bottom rail support groove of the relayable rail and the new rail is encased inside matched thermoplastic elastomer (TPE) respectively
Backing plate；
The thermoplastic elastic that the thermoplastic elastomer (TPE) backing plate height being wherein encased inside below relayable rail is greater than and new rail lower section is encased inside
Body backing plate height.Above structure, auxiliary is encased inside the thermoplastic elastomer (TPE) pad of mating research and development in the rail bottom rail support groove of two sides when installation
Plate reduces backing plate elasticity, reduces the impact to clamping plate while height difference between eliminating new relayable rail.By computer simulation by
Power analysis, increases thickness, integral strength is identical with common clamping plate, meets route requirement compared with common clamping plate.
Preferably, the connecting hole is circular hole, circular hole is passed through using bolt and connect clamping plate with rail.
Preferably, the clamping plate uses No. 55 steel.
A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes the processing technology of clamping plate, comprising the following steps:
(1) use forging machining for prefabricated shape No. 55 steel；
(2) pin processing radian is milled in clamping plate bending place；
(3) outer dimension carries out HB245-345 modifier treatment after the assay was approved, and necessary smooth, straightening, must not turn round after heat treatment
Song must not exceed 0.25mm with straightness in leveling ruler measurement length range；
(4) cut, drilled according to design drawing on milling machine, face size on three rail head, rail bottom, web of the rail faces,
Each size and the deviation for connecting circular arc are no more than 0.25mm, process with all corner angle in rail handover inside and bolt hole periphery
3*45 ° of chamfered edge.
To sum up, the beneficial effects of the present invention are: by the way that joint bar is designed as broken line type, while assist thermoplastic's bullet
Property body backing plate by different broken line height differences within the scope of 5mm, quickly adjust joint location, reach new relayable rail and couple smooth mesh
, in skylight finite time, reduce the workload polished along slope, improves operation quality and efficiency.
Go out the optimal outer dimension of clamping plate and bending place radian by computer finite element simulation Force Calculation, clamping plate is bent
Place's stress is reduced to minimum, avoids stress at dog-ear and concentrates, improves bending resistance, it is ensured that using safe.
Micro- fold-line-shaped railway track joint freezes clamping plate can be not only used for the switching tracks new rail of overhaul also can be used with coupling for old rail
In track switch overhaul newly replace before and after track switch with just have coupling for route, can be not only used for temporarily coupling, can also it is permanent it is cementing online
Road is used for a long time.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that clamping plate of the invention is connect with relayable rail, new rail；
Fig. 2 is clamping plate and relayable rail, new rail scheme of installation of the invention；
Fig. 3 is longitudinal plane structure schematic diagram of the present invention；
Fig. 4 is the portion the B schematic enlarged-scale view of Fig. 3；
Fig. 5 is cross-sectional configuration schematic diagram of the present invention.
The reference numerals are as follows:
1, relayable rail；2, new rail；2a, rail head；2b, the web of the rail；2c, rail bottom；3, clamping plate；3a, the first connecting hole；3b, in first
Heart line；3c, the second connecting hole；3d, the second center line；4, thermoplastic elastomer (TPE) backing plate.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Referring to shown in Fig. 1-Fig. 5, the present invention provides a kind of micro- fold-line-shaped railway track joints of 60Kg/m to freeze clamping plate 3,
The clamping plate 3 include two parts, be separately connected relayable rail 1 and new rail 2, this two parts clamping plate 3 be micro- fold-line-shaped structure, make this two
Splint segment 3 forms height difference, by forming the fold-line-shaped clamping plate 3 of height difference, can make new rail 2 and 1 top surface joint of relayable rail
Concordantly, by the control of tyre tread smooth degree within 0.5mm, reduction is polished flat suitable workload.Circular arc mistake is used at the broken line of clamping plate 3
It crosses, when stress avoids stress from concentrating；Connecting hole there are three every splint segment 3 is horizontally disposed, and the connecting hole on two parts clamping plate 3
Center line not on same center line (center line of the first connecting hole and the second connecting hole in such as Fig. 3), connecting hole be circle
It hole can be fully against gapless track long rail string temperature using the frictional force that joint bar 3 provides using 10.9 grades of high-strength bolts
Change the contractility generated, rail gap is avoided to pull open influence Track regularity.
Using above technical scheme, the clamping plate 3 is designed as fold-line-shaped, can adjust the height of new relayable rail 1, make new steel
The rail head 2a either flush of rail 2 and relayable rail 1 can control tyre tread smooth degree within 0.5mm, and reduction is polished flat suitable work
It measures.If control of grinding one's teeth is in 0.5mm, length of polishing can be fast implemented based on 1.0m by polishing connector smooth degree control
System is in 0.125mm/m；And the two-part connection centerline hole of clamping plate 3 is on same center line, can guarantee clamping plate 3 with it is new and old
The bonding strength of rail.
Arc transition is used at 3 middle line broken line of clamping plate, when stress avoids stress from concentrating.3 overall performance of clamping plate passes through calculating
Machine finite element simulation simulates force analysis, calculates the optimal arc transition of bending part and outer dimension.
As the preferred technical solution of this case, the 3 height difference D of two parts clamping plate of fold-line-shaped is 1mm-3mm, 60Kg/m clamping plate 3
Three specifications can be designed, height difference 1mm, 2mm and 3mm is adjusted, tyre tread smooth degree can be controlled within 0.5mm, reduction is beaten
Polish suitable workload.If control of grinding one's teeth, in 0.5mm, based on 1.0m, can fast implement will be connect by polishing length of polishing
Head smooth degree control is in 0.125mm/m.
The rail bottom 2c rail support groove of the relayable rail 1 and the new rail 2 is encased inside matched thermoplastic elastomer (TPE) backing plate respectively
4, for rail top to be levelling and damping；4 all technical of thermoplastic elastomer (TPE) backing plate meets GB/T528-2009, GB/T1690-
2010, GB/T7762-2014, TB/T2626-1995.Freezing 3 two sides rail bottom 2c of clamping plate in fold-line-shaped railway track joint need to be auxiliary
Installation thermoplastic elastomer (TPE) backing plate 4 is helped, the more common backing plate of the backing plate compares, and flexible deformation is small, and route has certain rigidity,
Under the impact of wheel, the rail engaging portion deformation that clamping plate 3 freezes is small, and 3 middle line bending place radian stress of clamping plate is concentrated is reduced, and is guaranteed
Safety of the clamping plate 3 during utilization.
4 height of thermoplastic elastomer (TPE) backing plate being wherein encased inside below relayable rail 1 be greater than and new rail 2 below the thermoplastic that is encased inside
Property 4 height of elastomer backing plate.Above structure, auxiliary is encased inside the thermoplasticity of mating research and development in the rail bottom 2c rail support groove of two sides when installation
Elastomer backing plate 4 reduces backing plate elasticity, reduces the impact to clamping plate 3 while eliminating new 1 height difference of relayable rail.Pass through meter
Calculation machine simulates force analysis, thickness is increased compared with common clamping plate 3, integral strength is identical with common clamping plate 3, and meeting route makes
With requiring.
Preferably, the clamping plate 3 uses No. 55 steel.
A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes the processing technology of clamping plate, comprising the following steps:
(1) use forging machining for prefabricated shape No. 55 steel.
(2) pin processing radian is milled in 3 bending place of clamping plate.
(3) outer dimension carries out HB245-345 modifier treatment after the assay was approved, necessary smooth, straightening after heat treatment, must not
Distortion must not exceed 0.25mm with straightness in leveling ruler measurement length range.
(4) cut, drilled according to design drawing on milling machine, face size with rail head 2a, rail bottom 2c, web of the rail 2b
On three faces, each size and the deviation for connecting circular arc are no more than 0.25mm, with all corner angle in rail handover inside and bolt hole
Periphery processes 3*45 ° of chamfered edge, and stress is avoided excessively to concentrate.
To sum up, by the way that joint bar 3 is designed as broken line type, while assist thermoplastic's elastomer backing plate 4, pass through different foldings
Line height difference quickly adjusts joint location within the scope of 5mm, reaches new relayable rail 1 and couples smooth purpose, in skylight finite time
It is interior, reduce the workload polished along slope, improves operation quality and efficiency.
Go out the optimal outer dimension of clamping plate 3 and bending place radian by computer finite element simulation Force Calculation, clamping plate 3 is curved
Stress is reduced to minimum at folding, avoids stress at dog-ear and concentrates, improves bending resistance, it is ensured that using safe.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (6)
1. a kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate, it is characterised in that: the clamping plate includes two parts, respectively
Relayable rail and new rail are connected, this two parts clamping plate is micro- fold-line-shaped structure, so that this two parts clamping plate is formed height difference, and at broken line
Using arc transition；Every splint segment is horizontally disposed, and there are three connecting holes, and the center line of the connecting hole on two parts clamping plate is not
On same center line.
2. a kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate according to claim 1, it is characterised in that: broken line
Two parts clamping plate height difference D of shape is 1mm-3mm.
3. a kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate according to claim 1, it is characterised in that: described
The rail bottom rail support groove of relayable rail and the new rail is encased inside matched thermoplastic elastomer (TPE) backing plate respectively；
The thermoplastic elastic that the thermoplastic elastomer (TPE) backing plate height being wherein encased inside below relayable rail is greater than and new rail lower section is encased inside
Body backing plate height.
4. a kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate according to claim 1, it is characterised in that: described
Connecting hole is circular hole, passes through circular hole using bolt and connect clamping plate with rail.
5. a kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate according to claim 1, it is characterised in that: described
Clamping plate uses No. 55 steel.
6. the processing work that a kind of -5 any micro- fold-line-shaped railway track joints of 60Kg/m according to claim 1 freeze clamping plate
Skill, it is characterised in that: the following steps are included:
(1) use forging machining for prefabricated shape No. 55 steel；
(2) pin processing radian is milled in clamping plate bending place；
(3) outer dimension carries out HB245-345 modifier treatment after the assay was approved, and necessary smooth, straightening, must not turn round after heat treatment
Song must not exceed 0.25mm with straightness in leveling ruler measurement length range；
(4) cut, drilled according to design drawing on milling machine, face size on three rail head, rail bottom, web of the rail faces,
Each size and the deviation for connecting circular arc are no more than 0.25mm, process with all corner angle in rail handover inside and bolt hole periphery
3*45 ° of chamfered edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618255.7A CN110172876A (en) | 2019-07-10 | 2019-07-10 | A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910618255.7A CN110172876A (en) | 2019-07-10 | 2019-07-10 | A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate |
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| Publication Number | Publication Date |
|---|---|
| CN110172876A true CN110172876A (en) | 2019-08-27 |
Family
ID=67699940
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910618255.7A Pending CN110172876A (en) | 2019-07-10 | 2019-07-10 | A kind of micro- fold-line-shaped railway track joint of 60Kg/m freezes clamping plate |
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| Country | Link |
|---|---|
| CN (1) | CN110172876A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900130A (en) * | 2019-12-06 | 2020-03-24 | 北京智宽轨道交通科技有限公司 | Process for manufacturing steel rail welding seam reinforcing clamping plate and clamping plate thereof |
| CN112239974A (en) * | 2020-08-28 | 2021-01-19 | 中铁工程设计咨询集团有限公司 | Vibration-damping steel rail joint |
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| CN2474565Y (en) * | 2001-04-26 | 2002-01-30 | 石家庄铁路分局石家庄工务段 | Deformation clamping plate |
| JP2004278163A (en) * | 2003-03-17 | 2004-10-07 | Rail Kizai Kk | Height adjusting plate for joint of track rail |
| CN202626770U (en) * | 2012-05-31 | 2012-12-26 | 大连铁联铁路器材制造有限公司 | Field freezing joint for steel rail |
| CN204417929U (en) * | 2014-12-30 | 2015-06-24 | 孙彦明 | A kind of height-adjustment type joining device for rail joints |
| CN106894297A (en) * | 2017-04-12 | 2017-06-27 | 大连铁联铁路器材制造有限公司 | Rail leveling joint |
| CN206721578U (en) * | 2017-04-12 | 2017-12-08 | 大连铁联铁路器材制造有限公司 | Rail leveling joint |
| CN210826947U (en) * | 2019-07-10 | 2020-06-23 | 中国铁路沈阳局集团有限公司科学技术研究所 | 60Kg/m micro-fold line-shaped railway steel rail joint freezing clamp plate |
-
2019
- 2019-07-10 CN CN201910618255.7A patent/CN110172876A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474565Y (en) * | 2001-04-26 | 2002-01-30 | 石家庄铁路分局石家庄工务段 | Deformation clamping plate |
| JP2004278163A (en) * | 2003-03-17 | 2004-10-07 | Rail Kizai Kk | Height adjusting plate for joint of track rail |
| CN202626770U (en) * | 2012-05-31 | 2012-12-26 | 大连铁联铁路器材制造有限公司 | Field freezing joint for steel rail |
| CN204417929U (en) * | 2014-12-30 | 2015-06-24 | 孙彦明 | A kind of height-adjustment type joining device for rail joints |
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| CN210826947U (en) * | 2019-07-10 | 2020-06-23 | 中国铁路沈阳局集团有限公司科学技术研究所 | 60Kg/m micro-fold line-shaped railway steel rail joint freezing clamp plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900130A (en) * | 2019-12-06 | 2020-03-24 | 北京智宽轨道交通科技有限公司 | Process for manufacturing steel rail welding seam reinforcing clamping plate and clamping plate thereof |
| CN112239974A (en) * | 2020-08-28 | 2021-01-19 | 中铁工程设计咨询集团有限公司 | Vibration-damping steel rail joint |
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Effective date of registration: 20200924 Address after: 110013 4-3, Jing bin street, Shenhe District, Shenyang City, Liaoning province (1-7 level) Applicant after: Shenyang Railway Science and Technology Research Institute Co.,Ltd. Applicant after: SHENZHEN BEIXING RAILWAY EQUIPMENT MANUFACTURING Co.,Ltd. Address before: No.4-3 Jingbin street, Shenhe District, Shenyang City, Liaoning Province Applicant before: Science and Technology Institute of China Railway Shenyang Bureau Group Co.,Ltd. Applicant before: SHENZHEN BEIXING RAILWAY EQUIPMENT MANUFACTURING Co.,Ltd. |
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