CN111979848A - Reinforced alloy steel point rail combined acute frog - Google Patents
Reinforced alloy steel point rail combined acute frog Download PDFInfo
- Publication number
- CN111979848A CN111979848A CN202010964371.7A CN202010964371A CN111979848A CN 111979848 A CN111979848 A CN 111979848A CN 202010964371 A CN202010964371 A CN 202010964371A CN 111979848 A CN111979848 A CN 111979848A
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- Prior art keywords
- rail
- frog
- alloy steel
- wing
- rails
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- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 37
- 230000001154 acute effect Effects 0.000 title claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 9
- 238000003801 milling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910000617 Mangalloy Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/10—Frogs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A reinforced alloy steel point rail combined acute-angle frog is characterized in that two wing rails are symmetrically arranged on two sides of an alloy steel point rail, and two fork heel rails are symmetrically arranged on two sides of the tail of the alloy steel point rail and located between the wing rails; the novel steel frog abrasion-resistant steel rail is characterized in that abrasion-resistant reinforcing plates are symmetrically fixed on one side of the non-working edge of the wing rail, corresponding to the region of the frog harmful space, and the inner rail head is symmetrically milled on one side of the working edge of the wing rail, corresponding to the region of the frog harmful space, so that the contact area between a wheel tread and the top surface of each abrasion-resistant reinforcing plate is increased when a wheel passes through the frog harmful space, and the abrasion-resistant reinforcing plates are fixedly connected with the alloy steel point rail and the two wing rails through spacer iron and high-strength bolt. The invention has simple structure, high assembly efficiency, long service life and convenient maintenance and can meet the requirement of seamless line.
Description
Technical Field
The invention belongs to the technical field of railway turnouts, and particularly relates to a reinforced alloy steel point rail combined acute-angle frog.
Background
With the continuous development of urban construction, the social and economic levels are continuously improved, the ground traffic jam condition is very serious, and the urban rail transit has the characteristics of rapidness and convenience, so that the urban rail transit becomes a traffic mode which more and more residents depend on when going out. At the end station or the middle large station of the subway, due to the needs of transportation organization such as turning back, a matched cross crossover line is generally arranged so as to facilitate the turning back of the locomotive and improve the transportation efficiency. Due to the structural and functional particularity of the cross crossover turnout, the dynamic action of the wheel track and the maintenance workload when the train passes the turnout are far larger than those of the interval line. The sharp frog in the cross crossover line is generally made of high manganese steel integrally cast frog, and a small amount of alloy steel point-rail combined frog. The high manganese steel integrally cast frog is easy to have the defects of peeling off, falling blocks, too fast vertical grinding of wing rails and the like, is frequently maintained and repaired, and is gradually replaced by the alloy steel point rail combined frog. The service lives of the core rail and the wing rail are not matched and the service lives are short because the existing alloy steel core rail combined frog or the wing rail is made of a steel rail made of a common material; or although the service life of the frog is obviously prolonged, the frog has the problems of complex manufacturing process, high cost, difficult assembly, low production efficiency and the like.
Disclosure of Invention
The invention provides a reinforced alloy steel point-rail combined acute-angle frog which is simple in manufacturing process, high in assembly efficiency, long in service life, convenient to maintain and capable of meeting the seamless requirement of a line.
The technical solution of the invention is as follows: a reinforced alloy steel point rail combined acute-angle frog is assembled by an alloy steel point rail, two fork heel rails and two wing rails, wherein the two wing rails are symmetrically arranged on two sides of the alloy steel point rail, and the two fork heel rails are symmetrically arranged on two sides of the tail of the alloy steel point rail and are positioned between the wing rails; the wear-resistant reinforcing plate is fixed on one side of the non-working edges of the two wing rails corresponding to the region symmetry of the frog harmful space, and the inner rail head is milled and processed on one side of the working edges of the two wing rails corresponding to the region symmetry of the frog harmful space, so that the contact area between the wheel tread and the top surface of the wear-resistant reinforcing plate is increased when a wheel passes through the frog harmful space, and the wear-resistant reinforcing plate is fixedly connected with the alloy steel center rail and the two wing rails through spacer iron and high-strength bolt pairs.
The inboard boss that has with the adaptation of wing rail web of a rail that wear-resisting stiffening plate, and wear-resisting stiffening plate top surface has the inclination with wheel tread adaptation.
The sum of the width of the top surface of the wear-resistant reinforcing plate and the width of the top surface of the wing rail after the inner rail head is milled on one side of the working edge of the wing rail is larger than or equal to the width of the top of the wing rail.
And the milling surface of the wing rail after the inner rail head is milled on one side of the working edge is an inclined surface inclined towards one side of the non-working edge, and part of the rail jaw is reserved.
The wear-resistant reinforcing plate is made of forged alloy steel or NM400 wear-resistant materials, and the fork heel rail and the wing rail are made of common steel rails.
The slope of the inclined plane is 1: 20.
The invention has the advantages and effects that:
the novel steel plate has the advantages of less required alloy steel materials, low cost, simple structure and easiness in processing and manufacturing.
According to the invention, the wear-resistant material is adopted in the weak harmful space region of the frog, so that the wear resistance of the frog is improved, and the service life of the frog is prolonged.
The wear-resistant reinforcing plate is arranged on the outer side of the wing rail in the 'harmful space' area of the frog, so that the stress state of the frog at the position is improved, and the stability and the safety of the frog are improved.
Compared with the structure that the wear-resisting plates are embedded on the inner sides of the wing rails, the structure is simplified, the working edge splicing seams are reduced, the requirements on the manufacturing precision of all parts are not high, the assembly is easy and efficient, and the continuity and the smoothness of the working edge of the frog are improved.
The wear-resistant reinforcing plate is arranged on the outer side of the frog, online replacement can be achieved, and maintenance is more convenient.
Drawings
FIG. 1 is a schematic structural view of the present invention,
figure 2 is a cross-sectional view a-a of figure 1,
fig. 3 is a sectional view taken along line B-B in fig. 1.
Detailed Description
The invention is described in detail below with reference to the accompanying figures 1-3 and specific examples.
A reinforced alloy steel point rail combined acute-angle frog is formed by assembling an alloy steel point rail 1, two fork heel rails 2 and two wing rails 3, wherein the two wing rails 3 are symmetrically arranged on two sides of the alloy steel point rail 1, and the two fork heel rails 2 are symmetrically arranged on two sides of the tail of the alloy steel point rail 1 and are positioned between the wing rails 3; the regional symmetry that two 3 non-working edge sides of wing rail correspond the harmful space of frog is fixed with wear-resisting stiffening plate 4, the regional symmetry milling process inboard railhead that two 3 working edge sides of wing rail correspond the harmful space of frog makes wheel 7 increase the area of contact of wheel tread and wear-resisting stiffening plate 4 top surface when passing through the harmful space of frog, and wear-resisting stiffening plate 4 is in the same place through interval iron 5 and high strength bolt pair 6 and alloy steel heart rail 1, two wing rail 3 fixed connection.
In order to prevent the wear-resistant reinforcing plate 4 from jumping up and down and improve the overall stability and safety of the frog, the inner side of the wear-resistant reinforcing plate 4 is provided with a boss 8 matched with the rail web of the wing rail 3.
In order to increase the contact area of the wheel on the top of the wing rail and the top surface of the wear-resistant reinforcing plate 4, the sum of the width of the top surface of the wear-resistant reinforcing plate 4 and the width of the top surface of the wing rail 3 after the inner rail head is milled on one side of the working edge of the wing rail 3 is not less than the width of the top surface of the wing rail 3, and the top surface of the wear-resistant reinforcing plate 4 has an inclination matched with the tread of the wheel 7.
In order to improve the stress state of the wing rail 3 corresponding to the harmful space area of the frog, the milling surface of the wing rail 3 after the inner rail head is milled on the working edge side is an inclined surface 9 inclined towards the non-working edge side, and the inclination of the inclined surface 9 is 1: 20. And a part of the rail jaw 10 is reserved, so that the positioning and installation of the spacing iron 5 are facilitated.
The wear-resistant reinforcing plate 4 is made of forged alloy steel or NM400 wear-resistant materials, and the wear resistance of a harmful space area of the frog corresponding to the wing rail 3 is improved. The fork and heel rails 2 and the wing rails 3 are made of common steel rails, and the seamless requirement is met.
The point rail is made of forged alloy steel materials, and the wear-resistant reinforcing plate is made of forged alloy steel or NM400 and other wear-resistant materials, so that alloy tempering of the frog is realized in a weak 'harmful space' area, the service life of the frog is prolonged, and the processing and assembling difficulty is reduced. Especially, the wear-resistant reinforcing plate is arranged on the outer side of the wing rail (namely the non-working edge side of the wing rail) in the harmful space area of the frog, so that the contact area of the wheel on the wing rail is increased, the wear resistance of the wing rail is improved, the stress state of the part is improved, and the wear resistance, the overall stability and the safety of the frog are further improved.
The wing rail and the fork heel rail are made of the same material as the track steel rail, so that the seamless requirement is met, and the popularization and application of the frog in the subway turnout market are facilitated.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the scope of the invention, and therefore all equivalent variations made by the following claims should be included in the scope of the invention.
Claims (6)
1. A reinforced alloy steel point rail combined acute-angle frog is formed by assembling an alloy steel point rail (1), two fork heel rails (2) and two wing rails (3), wherein the two wing rails (3) are symmetrically arranged on two sides of the alloy steel point rail (1), and the two fork heel rails (2) are symmetrically arranged on two sides of the tail of the alloy steel point rail (1) and are positioned between the wing rails (3); the method is characterized in that: the regional symmetry that two wing rails (3) non-working limit one side correspond the harmful space of frog is fixed with wear-resisting stiffening plate (4), the regional symmetry milling process inboard railhead that two wing rails (3) working limit one side correspond the harmful space of frog makes wheel (7) increase the area of contact of wheel tread and wear-resisting stiffening plate (4) top surface when through the harmful space of frog, and wear-resisting stiffening plate (4) are in the same place through spacer (5) and high strength bolt pair (6) and alloy steel heart rail (1), two wing rails (3) fixed connection.
2. The reinforced alloy steel point rail combined acute frog of claim 1, which is characterized in that: the inner side of the wear-resistant reinforcing plate (4) is provided with a boss (8) matched with the rail web of the wing rail (3), and the top surface of the wear-resistant reinforcing plate (4) is provided with an inclination matched with the tread of the wheel (7).
3. The reinforced alloy steel point rail combined acute frog of claim 1 or 2, which is characterized in that: the sum of the width of the top surface of the wear-resistant reinforcing plate (4) and the width of the top surface of the wing rail (3) after the inner rail head is milled on one side of the working edge of the wing rail is more than or equal to the width of the rail top of the wing rail (3).
4. The reinforced alloy steel point rail combined acute frog of claim 3, which is characterized in that: the milling surface of the wing rail (3) after the inner rail head is milled on one side of the working edge is an inclined surface (9) inclined towards one side of the non-working edge, and part of the rail jaw (10) is reserved.
5. The reinforced alloy steel point rail combined acute frog of claim 4, which is characterized in that: the wear-resistant reinforcing plate (4) is made of forged alloy steel or NM400 wear-resistant materials, and the fork and heel rail (2) and the wing rail (3) are made of common steel rails.
6. The reinforced alloy steel point rail combined acute frog of claim 5, which is characterized in that: the inclination of the inclined plane (9) is 1: 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964371.7A CN111979848B (en) | 2020-09-15 | Reinforced alloy steel core rail combined acute angle frog |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964371.7A CN111979848B (en) | 2020-09-15 | Reinforced alloy steel core rail combined acute angle frog |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111979848A true CN111979848A (en) | 2020-11-24 |
| CN111979848B CN111979848B (en) | 2024-07-05 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143289A1 (en) * | 1983-10-29 | 1985-06-05 | Schreck-Mieves GmbH | Frog for switches or crossings, and method of manufacturing them |
| JP2001220703A (en) * | 2000-02-10 | 2001-08-17 | Sekisui Chem Co Ltd | Connecting structure and connecting method for composite sleeper |
| CN201087315Y (en) * | 2007-08-09 | 2008-07-16 | 方建平 | Reinforced wing rail for railway combined frog |
| CN104452489A (en) * | 2014-12-12 | 2015-03-25 | 中国铁建重工集团有限公司 | Assembled frog structure with continuous wing rails |
| CN204311302U (en) * | 2014-12-12 | 2015-05-06 | 中国铁建重工集团有限公司 | The assembled frog structure of wing rail continous way |
| CN106149482A (en) * | 2016-07-25 | 2016-11-23 | 中铁宝桥集团有限公司 | A kind of embedded combined high manganese steel frog of embedded alloy steel core rail wing rail |
| CN110172875A (en) * | 2019-06-20 | 2019-08-27 | 中铁宝桥集团有限公司 | A kind of asymmetry inlays wing rail assembled frog |
| CN212375641U (en) * | 2020-09-15 | 2021-01-19 | 中铁宝桥集团有限公司 | Reinforced alloy steel point rail combined acute frog |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0143289A1 (en) * | 1983-10-29 | 1985-06-05 | Schreck-Mieves GmbH | Frog for switches or crossings, and method of manufacturing them |
| JP2001220703A (en) * | 2000-02-10 | 2001-08-17 | Sekisui Chem Co Ltd | Connecting structure and connecting method for composite sleeper |
| CN201087315Y (en) * | 2007-08-09 | 2008-07-16 | 方建平 | Reinforced wing rail for railway combined frog |
| CN104452489A (en) * | 2014-12-12 | 2015-03-25 | 中国铁建重工集团有限公司 | Assembled frog structure with continuous wing rails |
| CN204311302U (en) * | 2014-12-12 | 2015-05-06 | 中国铁建重工集团有限公司 | The assembled frog structure of wing rail continous way |
| CN106149482A (en) * | 2016-07-25 | 2016-11-23 | 中铁宝桥集团有限公司 | A kind of embedded combined high manganese steel frog of embedded alloy steel core rail wing rail |
| CN110172875A (en) * | 2019-06-20 | 2019-08-27 | 中铁宝桥集团有限公司 | A kind of asymmetry inlays wing rail assembled frog |
| CN212375641U (en) * | 2020-09-15 | 2021-01-19 | 中铁宝桥集团有限公司 | Reinforced alloy steel point rail combined acute frog |
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