CN205474622U - Elasticity split tram fastener device - Google Patents
Elasticity split tram fastener device Download PDFInfo
- Publication number
- CN205474622U CN205474622U CN201620241667.5U CN201620241667U CN205474622U CN 205474622 U CN205474622 U CN 205474622U CN 201620241667 U CN201620241667 U CN 201620241667U CN 205474622 U CN205474622 U CN 205474622U
- Authority
- CN
- China
- Prior art keywords
- swash plate
- mainboard body
- rail
- mainboard
- gauge apron
- 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.)
- Active
Links
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model relates to an elasticity split tram fastener device, including the sleeper body, be equipped with insulating height -adjusting cushion plate on the support rail face of sleeper body upper surface, height -adjusting cushion plate's top is equipped with the billet, and the top of billet is equipped with the rail, be provided with the buried sleeve who arranges about the center line symmetry of rail on the sleeper body, be provided with the internal thread in the buried sleeve, the both sides of rail all are provided with gauge apron and bullet strip, gauge apron is located height -adjusting cushion plate's top, the bullet strip is located gauge apron's top, an end pressure of bullet strip is on the lower limb of rail, all be equipped with the fixed orifices that supplies screw spike to pass on gauge apron and the height -adjusting cushion plate, screw spike from the top down passes the bullet strip in proper order, gauge apron, buried sleeve threaded connection on personally experiencing sth. Part of the body with the sleeper behind the height -adjusting cushion plate. The location is convenient for install by the device, easy maintenance, and node rigidity is high, increases the development that moves comfort level and stationarity, satisfied following tram that can be better.
Description
Technical field
This utility model relates to railway engineering technology field, particularly relates to a kind of elastic split tramcar fastener device.
Background technology
Spring I, II type fastener is commonly used in China railways, in the last few years, fast development along with high-speed railway, existing spring I, II type fastener and spring I type tightening means for height-adjusting are own through not meeting the prescription of high-speed railway, and heavy duty goods train axle weight and the increase of operation density, when spring loosens serious, easy gauge apron lateral sliding under relatively larger transverse power effect, making rail lose lateral support, reduce fastener stability at the bottom of Rail, the phenomenon causing rail to topple over occurs.
Summary of the invention
This utility model is in order to solve weak point of the prior art, it is provided that a kind of elastic split tramcar fastener device, it is simple to install location, easy to maintenance, connection stiffness is high, increases and runs comfort level and stationarity, it is possible to better meet the development of following tramcar.
This utility model provides a kind of elastic split tramcar fastener device, including sleeper body, the support rail face of sleeper body upper surface is provided with the height adjusting cushion plate of insulation, height adjusting cushion plate be arranged over billet, billet be arranged over rail, the service sleeve that the centrage about rail is arranged symmetrically with it is provided with on described sleeper body, female thread it is provided with in service sleeve, the both sides of rail are provided with gauge apron and spring, gauge apron is positioned at the top of height adjusting cushion plate, spring is positioned at the top of gauge apron, one end of spring is pressed on the lower limb of rail, the fixing hole passed for screw spike it is equipped with on gauge apron and height adjusting cushion plate, screw spike sequentially passes through spring from top to bottom, gauge apron, threaded with the service sleeve on sleeper body after height adjusting cushion plate.
It is provided with insulation board between described spring and the lower limb of rail.
Described height adjusting cushion plate includes the first mainboard body and the first swash plate body of "convex" shaped, the lobe of the first mainboard body is connected with the first swash plate body one, angle α between first swash plate body and the first mainboard body is 120 degree, being rounding structure between first swash plate body and the first mainboard body, the first mainboard body is provided with the fixing hole of trapped orbit fastener.
Between lower surface and the lower surface of the first swash plate body of described first mainboard body, the radius R2 of rounding structure is more than the radius R1 of rounding structure between upper surface and the upper surface of the first swash plate body of the first mainboard body.
Described gauge apron includes the second mainboard body and the second swash plate body, the integral middle of the second mainboard body and the second swash plate body connects, angle β between second swash plate body and the second mainboard body is 120 degree, it is arc surface attachment structure between upper surface and the lower surface of the second mainboard body and the second swash plate body of the second mainboard body, second mainboard body is provided with the fixing hole of trapped orbit fastener, the upper surface of described second mainboard body is transversely provided with two pieces of "T"-shaped reinforcements, two pieces of "T"-shaped reinforcements lay respectively at the both sides of fixing hole, the lower surface two ends of the second mainboard body are equipped with cushion block, the lower surface of the second mainboard body is provided with multiple the first groove being used in combination with spring and the second groove, the back side of the second swash plate body is provided with the 3rd groove being used in combination with sleeper body.
Arc surface attachment structure radius between upper surface and the second swash plate body of described second mainboard body is R3, and the arc surface attachment structure radius between lower surface and the second swash plate body of the second mainboard body is R4, and radius R3 is more than radius R4.
The width of described second groove is more than the width of the first groove, and the degree of depth of the second groove is equal to the degree of depth of the first groove, and the degree of depth of the degree of depth of the first groove and the second groove is respectively less than the thickness of mainboard body.
Described screw spike includes the head of a nail, nail rod, the described head of a nail is positive six prisms, the head of a nail and the fixing connection of nail rod one, described nail rod includes light bar segment and thread segment, the lower end of the head of a nail is for ease of mounting gasket, spring, the light bar segment of baffle plate, the lower end of light bar segment is thread segment, and thread segment is made up of multiple threads, and the pitch between adjacent two threads is 12.5 millimeters；Described thread is made up of crest face, cusp face, tooth bottom surface, cusp face is arc surface, crest face and tooth bottom surface are all tangent with cusp face, crest face and nail rod body of rod face are rounding structure, tooth bottom surface and nail rod body of rod face are rounding structure, angle γ between crest face and vertical plane is 45 degree, and the angle δ between tooth bottom surface and horizontal plane is 15 degree.
It is provided with plain washer between the head of a nail and the spring of described screw spike.
Described fixing hole is strip, and the two ends, left and right of fixing hole are semicircular structure.
This utility model structure is applicable to there is shoulder arrangement non-fragment orbit, on height adjusting cushion plate, on the first swash plate body and gauge apron, the setting of the second swash plate body can better meet and agrees with sleeper inclined-plane, fixing hole and height adjusting cushion plate, gauge apron, screw spike, spring are with the use of fixing the most firm, it is ensured that buckle press.This utility model simple in construction, it is simple to installing location, easy to maintenance, fastener device node Static stiffness is 30kN/mm～50kN/mm, connection stiffness is high, increases and runs comfort level and stationarity, it is possible to better meet the development of following tramcar.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the A-A profile of Fig. 1；
Fig. 3 is the structural representation of this utility model height adjusting cushion plate；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the structural representation of this utility model gauge apron；
Fig. 6 is the B-B profile of Fig. 5；
Fig. 7 is the C-C profile of Fig. 5；
Fig. 8 is the structural representation of this utility model screw spike；
Fig. 9 is the partial enlarged drawing of D in Fig. 8.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and beneficial effect clearer, below in conjunction with the accompanying drawings this utility model embodiment is described in further detail.
As shown in Figure 1 and Figure 2, this utility model provides a kind of elastic split tramcar fastener device, and including sleeper body 1, the support rail face of sleeper body 1 upper surface is provided with the height adjusting cushion plate 8 of insulation, height adjusting cushion plate 8 be arranged over rail 9.The service sleeve 2 that the centrage about rail 9 is arranged symmetrically with it is provided with on described sleeper body 1, it is provided with female thread in service sleeve 2, the both sides of rail 9 are provided with gauge apron 5 and spring 3, gauge apron 5 is positioned at the top of height adjusting cushion plate 8, spring 3 is positioned at the top of gauge apron 5, one end of spring 3 is pressed on the lower limb of rail 9, insulation board 6 it is provided with between the lower limb of spring 3 and rail 9, the fixing hole passed for screw spike it is equipped with on gauge apron 5 and height adjusting cushion plate 8, screw spike 4 sequentially passes through plain washer 7 from top to bottom, spring 3, gauge apron 5, threaded with the service sleeve 2 on sleeper body 1 after height adjusting cushion plate 8.
Such as Fig. 3, shown in Fig. 4, described height adjusting cushion plate 8 includes the first mainboard body 81 and the first swash plate body 82 of "convex" shaped, the lobe of the first mainboard body 81 is connected with the first swash plate body 82 one, junction between first mainboard body 81 and the lobe of the first mainboard body 81 is rounding structure, the radius of its rounding structure is 3 millimeters, first angle, four, swash plate body 82 upper end is rounding structure, the radius of its rounding structure is 1 millimeter, the material of described height adjusting cushion plate is polyethylene, can be good at playing insulating effect, the thickness H of the first mainboard body 81 is more than or equal to the thickness h of the first swash plate body 82, wherein the thickness h of the first swash plate body 82 can be adjusted arranging according to the situation during actually used.
Angle between first swash plate body 82 and the first mainboard body 81 is 120 degree, forms a little slope, coordinates with sleeper body 1 inclined-plane, the most overall highness adjusting device.Being rounding structure between first swash plate body 82 and the first mainboard body 81, described first mainboard body 81 is provided with the fixing hole of trapped orbit fastener, and fixing hole is strip, and the two ends, left and right of fixing hole are semicircular structure, and the radius of semicircular structure is 13 millimeters.
Between upper surface and the upper surface of the first swash plate body 82 of described first mainboard body 81, the radius of rounding structure is R1, between lower surface and the lower surface of the first swash plate body 82 of the first mainboard body 81, the radius of rounding structure is R2, and radius R2 is more than radius R1, R2 takes 5 millimeters in the present embodiment, R1 takes 3 millimeters, it is possible to make the combination between the first swash plate body 82 and the lobe 11 of the first mainboard body 81 the mildest.
Its height adjusting cushion plate 8 generally can be divided into ZTB1, ZTB2 two kinds, and ZTB1 entirety is heightened 10mm, ZTB2 entirety and heightened 20mm, and overall height adjusting cushion plate ZTB1, ZTB2 are positioned on sleeper body 1 support rail face, and the amount of heightening 30mm adjusts rank 1mm.
nullSuch as Fig. 5、Fig. 6、Shown in Fig. 7，Described gauge apron 5，Including the second mainboard body 51 and the second swash plate body 52，Second mainboard body 51 is connected with the integral middle of the second swash plate body 52，Angle β between second mainboard body 51 and the second swash plate body 52 is 120 degree，It is arc surface attachment structure between upper surface and the lower surface of the second mainboard body 51 and the second swash plate body 52 of the second mainboard body 51，Arc surface attachment structure radius between upper surface and the second swash plate body 52 of the second mainboard body 51 is R3，Arc surface attachment structure radius between lower surface and the second swash plate body 52 of the second mainboard body 51 is R4，And radius R3 is more than radius R4，It is arc surface attachment structure between upper surface and the lower surface of the second mainboard body 51 and the second swash plate body 52 of the second mainboard body 51，Play fixing spring 3 and ensure buckle press.
Second mainboard body 51 is provided with the fixing hole of trapped orbit fastener, and described fixing hole is strip, and the two ends, left and right of fixing hole are semicircular structure, and the radius of semicircular structure is 13 millimeters.The upper surface of described second mainboard body 51 is transversely provided with two pieces of "T"-shaped reinforcements 53, two pieces of "T"-shaped reinforcements 53 lay respectively at the both sides of fixing hole, the lower surface two ends of the second mainboard body 51 are equipped with cushion block 57, and the thickness of cushion block 57 is equal to the length of the second swash plate body 52 being positioned on the downside of the second mainboard body 51.
The lower surface of the second mainboard body 51 is provided with multiple the first groove 54 and the second groove 55 being used in combination with spring 3, the width of the second groove 55 is more than the width of the first groove 54, the degree of depth of the second groove 55 is equal to the degree of depth of the first groove 54, and the degree of depth of the degree of depth of the first groove 54 and the second groove 55 is respectively less than the thickness of the second mainboard body 51.The back side of described second swash plate body 52 is provided with the 3rd groove 56 being used in combination with sleeper body 1.The bottom surface of first groove the 54, second groove 55 and the 3rd groove 56 is the design of arc surface structure, and this kind is designed in the case of ensureing load save material and reduces cost.
In addition, the upper surface of the second mainboard body 51 is additionally provided with projection 58, and projection 58 is between two pieces of "T"-shaped reinforcements 53, joint face between projection 58 and the upper surface of the second mainboard body 51 is arc surface attachment structure, so ensure that projection 58 is more firm with what the second mainboard body 51 was connected, improve the shearing strength between projection 58 and the second mainboard body 51.Projection 58 is provided with the date of production, it is simple to circuit onsite lookup, strengthens trackability.All structures of described gauge apron 5 are all integrated connection, and the material of gauge apron 5 is glass fiber reinforced polyamide 66, and the hardness of gauge apron 5 cannot be less than 105 HRR(Rockwell hardness), the insulation resistance of gauge apron 5 should be greater than 108Ω, it is possible to preferably play insulating effect, meets the needs of track laying.
Its described gauge apron 5 can produce into GB1-2 GB1-12 totally 11 models according to the actual needs, adjust for rail right position, sub-thread rail right position adjustment amount :-6 mm～+4 mm, gauge adjustment amount :-12 mm～+8 mm, adjusting rank 1mm, precision is higher.
As shown in Figure 8, described screw spike 4, including the head of a nail 41, nail rod 42, the described head of a nail 41 is positive six prisms, is so more convenient for general spanner or sleeve installation and repairing.The head of a nail 41 and the fixing connection of nail rod 42 one, usual screw spike 4 uses carbon structural steels or steel alloy integrally casting, and strength grade is 8.8 grades.The outer surface of screw spike 4 is coated with one layer of corrosion-inhibiting coating, and corrosion-inhibiting coating is usually iron oxide red anticorrosion coat, strengthens the anti-corrosive properties of its screw spike 4.
Described nail rod 42 includes light bar segment 421 and thread segment 422, and the lower end of the head of a nail 41 is rounding structure for ease of mounting gasket, spring, the light bar segment 421 of baffle plate, the lower end of the head of a nail 41 with the upper end of light bar segment 421, and the radius of rounding structure is usually 1 millimeter.The lower end of light bar segment 421 is thread segment 422, and thread segment 422 is made up of multiple threads 43, and the pitch between adjacent two threads 43 is 12.5 millimeters, and the design of such pitch is more beneficial for the Fast Installation of spiral screw 4.
As shown in Figure 9, described thread 43 is made up of crest face 431, cusp face 432, tooth bottom surface 433, cusp face 432 is arc surface, the cusp footpath in its cusp face 432 is for for 1.5 millimeters, crest face 431 and tooth bottom surface 433 are all tangent with cusp face 432, and crest face 432 and nail rod 42 body of rod face are rounding structure, and the crest footpath of its rounding structure is 1.5 millimeters, tooth bottom surface 433 and nail rod 42 body of rod face are rounding structure, and footpath at the bottom of the tooth of its rounding structure is 2 millimeters.Angle between described crest face 432 and vertical plane be γ, γ be 45 degree, the angle between described tooth bottom surface 433 and horizontal plane be δ, δ be 15 degree, substantially increase the self-lock ability between screw spike 4 and service sleeve 2 during use.
nullSuch as Fig. 1、Shown in Fig. 2，The elastic split tramcar fastener device that this utility model technology provides，Remove the dirt in sleeper body 1 support rail face，Extract plastics (or other materials) lid on service sleeve 2，The support rail face of sleeper body 1 is laid overall height adjusting cushion plate 8 the most successively、Rail 9，The lateral symmetry of rail 9 arranges gauge apron 5，Wherein the second swash plate body 52 of gauge apron 5 fits with the first swash plate body 82 of height adjusting cushion plate 8，"T"-shaped reinforcement 53 back side of gauge apron 5 fits with the lower limb of rail 9，The stability of rail 9 is guaranteed by the restriction effect of rail 9 both sides gauge apron 5，The wherein fixing hole on height adjusting cushion plate 8、Fixing hole on gauge apron 5 all with service sleeve 2 central alignment，Then the lateral symmetry at rail 9 arranges spring 3，Insulation board 6 it is provided with between the lower limb of spring 3 and rail 9，Finally screw spike 4 is put plain washer 7 and fills railway special protection oils and fats at thread segment 42，Sequentially pass through spring 3 the most from top to bottom、Gauge apron 5、Height adjusting cushion plate 8，It is screwed into service sleeve 2，Fastening spring 3，Complete the laying installation process of whole rail 9.This elasticity split tramcar fastener device simple in construction, it is simple to install location, easy to maintenance, fastener device node Static stiffness is 30kN/mm～50kN/mm, connection stiffness is high, increases and runs comfort level and stationarity, it is possible to better meet the development of following tramcar.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed utility model.This utility model claims scope and is defined by appending claims and equivalent.
Claims (10)
1. an elastic split tramcar fastener device, including sleeper body, the support rail face of sleeper body upper surface is provided with the height adjusting cushion plate of insulation, height adjusting cushion plate be arranged over billet, billet be arranged over rail, the service sleeve that the centrage about rail is arranged symmetrically with it is provided with on described sleeper body, female thread it is provided with in service sleeve, it is characterized in that: the both sides of rail are provided with gauge apron and spring, gauge apron is positioned at the top of height adjusting cushion plate, spring is positioned at the top of gauge apron, one end of spring is pressed on the lower limb of rail, the fixing hole passed for screw spike it is equipped with on gauge apron and height adjusting cushion plate, screw spike sequentially passes through spring from top to bottom, gauge apron, threaded with the service sleeve on sleeper body after height adjusting cushion plate.
The most elastic split tramcar fastener device, it is characterised in that: it is provided with insulation board between described spring and the lower limb of rail.
The most elastic split tramcar fastener device, it is characterized in that: described height adjusting cushion plate includes the first mainboard body and the first swash plate body of "convex" shaped, the lobe of the first mainboard body is connected with the first swash plate body one, angle α between first swash plate body and the first mainboard body is 120 degree, being rounding structure between first swash plate body and the first mainboard body, the first mainboard body is provided with the fixing hole of trapped orbit fastener.
The most elastic split tramcar fastener device, it is characterised in that: between lower surface and the lower surface of the first swash plate body of described first mainboard body, the radius R2 of rounding structure is more than the radius R1 of rounding structure between upper surface and the upper surface of the first swash plate body of the first mainboard body.
nullThe most elastic split tramcar fastener device，It is characterized in that: described gauge apron includes the second mainboard body and the second swash plate body，The integral middle of the second mainboard body and the second swash plate body connects，Angle β between second swash plate body and the second mainboard body is 120 degree，It is arc surface attachment structure between upper surface and the lower surface of the second mainboard body and the second swash plate body of the second mainboard body，Second mainboard body is provided with the fixing hole of trapped orbit fastener，The upper surface of described second mainboard body is transversely provided with two pieces of "T"-shaped reinforcements，Two pieces of "T"-shaped reinforcements lay respectively at the both sides of fixing hole，The lower surface two ends of the second mainboard body are equipped with cushion block，The lower surface of the second mainboard body is provided with multiple the first groove being used in combination with spring and the second groove，The back side of the second swash plate body is provided with the 3rd groove being used in combination with sleeper body.
The most elastic split tramcar fastener device, it is characterized in that: the arc surface attachment structure radius between upper surface and the second swash plate body of described second mainboard body is R3, arc surface attachment structure radius between lower surface and the second swash plate body of the second mainboard body is R4, and radius R3 is more than radius R4.
The most elastic split tramcar fastener device, it is characterized in that: the width of described second groove is more than the width of the first groove, the degree of depth of the second groove is equal to the degree of depth of the first groove, and the degree of depth of the degree of depth of the first groove and the second groove is respectively less than the thickness of mainboard body.
The most elastic split tramcar fastener device, it is characterized in that: described screw spike includes the head of a nail, nail rod, the described head of a nail is positive six prisms, the head of a nail and the fixing connection of nail rod one, described nail rod includes light bar segment and thread segment, and the lower end of the head of a nail is thread segment for ease of mounting gasket, spring, the light bar segment of baffle plate, the lower end of light bar segment, thread segment is made up of multiple threads, and the pitch between adjacent two threads is 12.5 millimeters；Described thread is made up of crest face, cusp face, tooth bottom surface, cusp face is arc surface, crest face and tooth bottom surface are all tangent with cusp face, crest face and nail rod body of rod face are rounding structure, tooth bottom surface and nail rod body of rod face are rounding structure, angle γ between crest face and vertical plane is 45 degree, and the angle δ between tooth bottom surface and horizontal plane is 15 degree.
The most elastic split tramcar fastener device, it is characterised in that: it is provided with plain washer between the head of a nail and the spring of described screw spike.
The most elastic split tramcar fastener device, it is characterised in that: described fixing hole is strip, and the two ends, left and right of fixing hole are semicircular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241667.5U CN205474622U (en) | 2016-03-28 | 2016-03-28 | Elasticity split tram fastener device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241667.5U CN205474622U (en) | 2016-03-28 | 2016-03-28 | Elasticity split tram fastener device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205474622U true CN205474622U (en) | 2016-08-17 |
Family
ID=56648020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620241667.5U Active CN205474622U (en) | 2016-03-28 | 2016-03-28 | Elasticity split tram fastener device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205474622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982036A (en) * | 2021-02-20 | 2021-06-18 | 中铁隆昌铁路器材有限公司 | A fastener device for tram is shock-resistant insulating |
-
2016
- 2016-03-28 CN CN201620241667.5U patent/CN205474622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982036A (en) * | 2021-02-20 | 2021-06-18 | 中铁隆昌铁路器材有限公司 | A fastener device for tram is shock-resistant insulating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102789531A (en) | Method for designing jointless track of long and large bridge girder longitudinal butt plate type ballastless track for high-speed railway | |
| CN205934597U (en) | Rail extra small resistance fastener | |
| CN202323578U (en) | Fastening piece for auxiliary rail | |
| CN203034311U (en) | Sleeper for ballastless track | |
| CN202047325U (en) | Special-shaped transition rail | |
| CN109778690A (en) | Seamless rack rails fixed connection component on long steep grade route bridge | |
| CN111576096A (en) | Retaining shoulder-free fastener for urban rail transit | |
| CN205474622U (en) | Elasticity split tram fastener device | |
| CN107724230A (en) | One kind has the super H.D straddle-type rail beam bearing of circuit | |
| CN208472468U (en) | A kind of suspension type monorail traffic track structure | |
| CN206204704U (en) | A kind of W shape springs for there is shoulder arrangement non-fragment orbit | |
| CN212505646U (en) | Retaining shoulder-free fastener for urban rail transit | |
| CN107805977A (en) | Elastic shoe and resilient sleeper-bearing component and non-fragment orbit for non-fragment orbit | |
| CN206553836U (en) | One kind is adjustable to have quarrel to have shoulder block high ferro fastener | |
| CN209227291U (en) | A kind of Novel steel sleeper | |
| CN207176403U (en) | Elastic shoe and resilient sleeper-bearing component and non-fragment orbit for non-fragment orbit | |
| CN205062586U (en) | Tram is with directly keeping off shoulder buckle spare system | |
| CN206219910U (en) | A kind of elastic split tramcar fastener spring | |
| RU183649U1 (en) | GASKET ELASTIC FASTENERS | |
| CN204417933U (en) | Groove-shape rail expansion and cotraction regulator | |
| CN201301418Y (en) | Outer-dipping prevention device of minor-radius curved line railway track | |
| CN205399095U (en) | Elasticity split tram is screw spike for fastener | |
| CN205077336U (en) | A embedded track structure for in tunnel | |
| CN205188729U (en) | But quick detachable double -deck damping fastener system of roll adjustment | |
| CN210031357U (en) | Railway fastener structure capable of reducing abrasion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |