CN102409581B - Alloy steel assembly of frog, point rail and wing rails - Google Patents
Alloy steel assembly of frog, point rail and wing rails Download PDFInfo
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- CN102409581B CN102409581B CN201110357197.0A CN201110357197A CN102409581B CN 102409581 B CN102409581 B CN 102409581B CN 201110357197 A CN201110357197 A CN 201110357197A CN 102409581 B CN102409581 B CN 102409581B
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Abstract
The invention relates to an alloy steel assembly of a frog, a point rail and wing rails, which not only effectively enhances the smoothness of the tread of the frog and improves the stress states of the point rail and the wing rails, but also fundamentally prolongs the service life of the entire set of the frog. In the alloy steel assembly of the frog, the point rail and the wing rails, the wing rails are lifted to 5 mm from the throat of the frog to a part with the top width of 30 mm to 50 mm in the point rail; the reduction values of the top surface of the point rail are as followings: 10 mm from at the top width of 10 mm, 3 mm to 4 mm from the top width of 20 mm, 0.5 mm from the top width of 50 mm, and 0 mm from the top width of 71 mm; and the rail head cutting output of the working edges of the wing rails, which correspond to the point rail width of 20 mm to 50 mm, is 0 mm. The invention has the advantages as follows: firstly, the structure is simple, and the assembling is easy; and secondly, the smoothness of the tread of the frog is enhanced, the stress states of the point rail and the wing rails are improved, and the service life of the entire set of frog is prolonged.
Description
Technical field
The present invention relates to a kind of tread ride comfort that can effectively strengthen railway frog, improve the stress of heart rail and wing rail, can fundamentally improve again the alloy steel combination frog heart rail wing rail in whole group of railway frog application life, belong to alloy steel combination frog heart rail wing rail and manufacture field.
Background technology
Alloy steel combination frog is to adopt interval iron and high-strength bolt to assemble between alloy steel core rail and online heat-treated rail.Heart rail adopts the alloy steel material of high strength, high rigidity to manufacture, the application life that can effectively improve railway frog; Wing rail, fork adopt common online heat-treated rail manufacture with rail, realize the Site Welding of gapless track, structurally thoroughly eliminate rail joint, reduce the shock and vibration of train at connector area, extend the application life of wheel, rail parts, and level and smooth operation surface is provided, has brought many benefits to train operation and traffic safety, obtained the extensive use of Liao Ge Railway Bureau.
Along with alloy steel combination frog promoting the use of on gapless track, expose gradually the early stage flake-off piece of heart rail and wing rail and wear away very fast two ubiquity problems.This is mainly because alloy steel combination frog tread face exists the dynamic action between wheel and rail producing compared with large vertical irregularity larger, causes the damage to heart rail and wing rail.Therefore, need the heart rail wing rail relative position relation of alloy steel assembled frog to be optimized, strengthen the tread ride comfort of railway frog, improve the stress of heart rail and wing rail, improve the application life of railway frog.
Summary of the invention
Purpose of design: avoid the weak point in background technology, design a kind of tread ride comfort that can effectively strengthen railway frog, improve the stress of heart rail and wing rail, can fundamentally improve again the alloy steel combination frog heart rail wing rail in whole group of railway frog application life.
Design scheme: in order to realize above-mentioned purpose of design.The application is intended to the heart rail wing rail relative position relation of research and development design alloy steel combination frog, the reduction value and the raising of wing rail that are the wide 10mm of heart rail, 20mm, 50mm, 71mm section reach optimal design, strengthen the tread ride comfort of railway frog, improve the stress of heart rail and wing rail, separate the early stage flake-off piece of resolution rail and wing rail and wear away very fast phenomenon, thereby improve the application life of whole group of railway frog.; in alloy steel combination frog design process; stressed excessive with wing rail abrasion for avoiding the weak section of heart rail to shift to an earlier date; five kinds of heart rail wing rail relative position relations (in table 1) are designed; and analyze contrast from wheel load transfer, three main aspects of wheel power additional force between vertical irregularity, heart rail and wing rail, finally draw optimization design scheme.
Table 1 alloy steel combination frog heart rail wing rail relative position relation design (taking No. 12,60kg/m rail as example)
One, first sequence number 1～4 scheme is contrasted:
1, when train is crossed trouble, due to the variation of Wheel/Rail Contact Point, can inevitably produce vertical irregularity, the vertical irregularity of stock rail one side is less, and the vertical irregularity of railway frog one side is larger.Vertical irregularity is to cause railway points system that the exciting source of vibration occurs, and is the principal element of impact driving stationarity and safety.Irregularity wavelength is shorter, amplitude is larger, and the vertical dynamic action between wheel track is larger.The vertical irregularity of HGPC02 type railway frog is 0.0～2.2mm; The vertical irregularity of HGPC04G type railway frog is-2.6～1.8mm; The vertical irregularity of HGPC04GG type railway frog is-2.6～1.4mm; The vertical irregularity of HGPC04X type railway frog is 0.0～2.3mm.
2, along with heart tread face width degree increases, Wheel/Rail Contact Point is all changing on rail and wheel, and the center of gravity of wheel is also changing simultaneously.HGPC02 type assembled frog wheel load branchpoint is between the wide 10～20mm of heart tread, and the weak section of heart rail is stressed larger, and heart rail is prone to hurt disease; HGPC04G type assembled frog wheel load branchpoint is between the wide 30～40mm of heart tread, and wing rail is stressed larger, and because of the contact area between wheel and wing rail less (Wheel/Rail Contact Point is near near gauge angle), therefore wing rail abrasion can be very fast; HGPC04GG, HPGC04X type assembled frog wheel load branchpoint between the wide 20～30mm of heart tread, heart rail and wing rail stressed comparatively reasonable.
3, in the time that train passes through one section of complete smooth-going track, rail has an even deflection, and now rail is both without additional depression, and wheel is also without additional dynamic pressure.But in the time that train passes through the vertical irregularity of track, there is new dynamic equilibrium condition.Wheel enters before irregularity, and it is parallel with former rail level that wheel center of gravity keeps, and entering after irregularity, wheel center of gravity suddenly declines and is equivalent to the degree of depth of irregularity, make part under wheel spring produce forced vibration together with part track, result makes rail produce additional depression, and wheel produces additional dynamic pressure.This forced vibration, only continues up to irregularity terminal.In the time that wheel rolls irregularity away from, because also having certain vertical vibrating acceleration and displacement, therefore will continue to produce free vibration outward in irregularity scope, under the effect of damping, until certain outside irregularity a bit, the impact of irregularity disappears soon completely, and the depression of rail returns to original position, also no longer includes any additional dynamic pressure on wheel.
China's freight car wheel rolling circle diameter is 840mm, and single-wheel unsprung mass is about 1200kg, and assembled frog fastener Support rigidity is designed to 75kN/mm, and pillow spacing is 600mm, and goods train is directly 120km/h to switch crossing speed.The power additional force that calculates HGPC02 type railway frog is 449.4kN, and the power additional force of HGPC04G type railway frog is 347.8kN, and the power additional force of HGPC04GG type railway frog is 254.5kN, and the power additional force of HGPC04X type railway frog is 247.7kN.The wheel power additional force of four kinds of assembled frogs as shown in Figure 1, from the angle of wheel power additional force, with HGPC04X type assembled frog optimum, the poorest with HGPC02 type railway frog.
Brief summary: according to above analysis contrast, in sequence number 1～4 scheme, sequence number 4 schemes (HGPC04X type) assembled frog optimum.
Two, be further to reduce dynamic action between wheel and rail, on the basis of HGPC04X, be again optimized (in 5 schemes of sequence number in table 1), by the vertical irregularity to before and after optimizing, the comparison (seeing Fig. 2, Fig. 3) of power additional force, after HGPC04X optimizes, irregularity amplitude and power additional force all decrease.
Conclusion: contrast by above analysis, sequence number 5 schemes are optimal case, wing rail is raised to 5mm from throat of frog to the wide 30mm of heart tread; Heart tread face reduction value is that top width 10mm place reduces 10mm, top width 20mm place reduces 3mm, top width 50mm place reduction 0.5mm, top width 71mm place reduction 0mm; Wide 20～the 50mm of heart rail corresponding position wing rail working edge rail head cutting output is 0mm.
Technical scheme: a kind of alloy steel combination frog heart rail wing rail, in described alloy steel combination frog heart rail wing rail, wing rail is raised to 5mm from throat of frog to the wide 30mm-50mm of heart tread; Heart tread face reduction value is that top width 10mm place reduces 10mm, top width 20mm place reduces 3mm-4mm, top width 50mm place reduction 0.5mm, top width 71mm place reduction 0mm; Wide 20～the 50mm of heart rail corresponding position wing rail working edge rail head cutting output is 0mm.
The present invention compared with background technology, the one, simple in structure, be easy to assembling; The 2nd, strengthen the tread ride comfort of railway frog, improve the stress of heart rail and wing rail, the application life of improving whole group of railway frog.
Brief description of the drawings
Fig. 1 is the schematic diagram of power additional force.
Fig. 2 is the relatively schematic diagram of vertical irregularity before and after HGPC04X optimizes.
Fig. 3 is the relatively schematic diagram of power additional force before and after HGPC04X optimizes.
Fig. 4 is the structural representation of alloy steel combination frog heart rail wing rail.
Detailed description of the invention
Embodiment 1: with reference to accompanying drawing 4.A kind of alloy steel combination frog heart rail wing rail, the manufacturing process of alloy steel combination frog heart rail wing rail is prior art, is not described herein at this.In described alloy steel combination frog heart rail wing rail, wing rail is raised to 5mm from throat of frog to the wide 30mm-50mm of heart tread; Heart tread face reduction value is that top width 10mm place reduces 10mm, top width 20mm place reduces 3mm-4mm, top width 50mm place reduction 0.5mm, top width 71mm place reduction 0mm; Wide 20～the 50mm of heart rail corresponding position wing rail working edge rail head cutting output is 0mm.Because alloy steel combination frog is to assemble, therefore should strictly control in process of production the requirement of railway frog tread flatness; Before dispatching from the factory, high-strength bolt must be implemented tighten according to design specifications, prevent railway frog in use heart rail wing rail relative position relation change, thereby affect application life of railway frog.
Embodiment 2: on the basis of embodiment 1, in described alloy steel combination frog heart rail wing rail, wing rail is raised to 5mm from throat of frog to the wide 30mm of heart tread; Heart tread face reduction value is that top width 10mm place reduces 10mm, top width 20mm place reduces 3mm, top width 50mm place reduction 0.5mm, top width 71mm place reduction 0mm; Wide 20～the 50mm of heart rail corresponding position wing rail working edge rail head cutting output is 0mm.
It is to be understood that: although above-described embodiment is to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; instead of to the originally restriction of bright mentality of designing; any combination, increase or amendment that does not exceed mentality of designing of the present invention, all falls within the scope of protection of the present invention.
Claims (2)
1. an alloy steel combination frog heart rail wing rail, is characterized in that: in described alloy steel combination frog heart rail wing rail, wing rail is raised to 5mm from throat of frog to the wide 30mm-50mm of heart tread; Heart tread face reduction value is that top width 10mm place reduces 10mm, top width 20mm place reduces 3mm-4mm, top width 50mm place reduction 0.5mm, top width 71mm place reduction 0mm; Wide 20～the 50mm of heart rail corresponding position wing rail working edge rail head cutting output is 0mm.
2. alloy steel combination frog heart rail wing rail according to claim 1, is characterized in that: in described alloy steel combination frog heart rail wing rail, wing rail is raised to 5mm from throat of frog to the wide 30mm of heart tread; Heart tread face reduction value is that top width 10mm place reduces 10mm, top width 20mm place reduces 3mm, top width 50mm place reduction 0.5mm, top width 71mm place reduction 0mm; Wide 20～the 50mm of heart rail corresponding position wing rail working edge rail head cutting output is 0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110357197.0A CN102409581B (en) | 2011-11-12 | 2011-11-12 | Alloy steel assembly of frog, point rail and wing rails |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110357197.0A CN102409581B (en) | 2011-11-12 | 2011-11-12 | Alloy steel assembly of frog, point rail and wing rails |
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| Publication Number | Publication Date |
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| CN102409581A CN102409581A (en) | 2012-04-11 |
| CN102409581B true CN102409581B (en) | 2014-08-13 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741563B (en) * | 2013-12-31 | 2015-09-23 | 中铁山桥集团有限公司 | The fixed end frog heart rail that a kind of tip thickeies |
| CN108867202B (en) * | 2018-09-19 | 2024-05-10 | 芜湖中铁科吉富轨道有限公司 | Integral alloy steel fork core with wing rail heightening |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5560571A (en) * | 1995-10-02 | 1996-10-01 | Abc Rail Products Corporation | Reversible wing insert frog |
| CN1519428A (en) * | 2002-12-10 | 2004-08-11 | 顾宏立 | Electroslag casting made frog nose rail |
| CN1667189A (en) * | 2004-03-08 | 2005-09-14 | 顾宏立 | Central body of rail bound steel frog |
| KR20070034277A (en) * | 2005-09-23 | 2007-03-28 | 삼표이앤씨 주식회사 | Welding Crossing for Railway Turnout and Manufacturing Method Thereof |
| CN202337922U (en) * | 2011-11-12 | 2012-07-18 | 中铁宝桥集团有限公司 | Point rail and wing rail of alloy steel combined frog |
-
2011
- 2011-11-12 CN CN201110357197.0A patent/CN102409581B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5560571A (en) * | 1995-10-02 | 1996-10-01 | Abc Rail Products Corporation | Reversible wing insert frog |
| CN1519428A (en) * | 2002-12-10 | 2004-08-11 | 顾宏立 | Electroslag casting made frog nose rail |
| CN1667189A (en) * | 2004-03-08 | 2005-09-14 | 顾宏立 | Central body of rail bound steel frog |
| KR20070034277A (en) * | 2005-09-23 | 2007-03-28 | 삼표이앤씨 주식회사 | Welding Crossing for Railway Turnout and Manufacturing Method Thereof |
| CN202337922U (en) * | 2011-11-12 | 2012-07-18 | 中铁宝桥集团有限公司 | Point rail and wing rail of alloy steel combined frog |
Non-Patent Citations (1)
| Title |
|---|
| 蔡小培，李成辉.高速道岔辙叉区轮轨接触不平顺.《西南交通大学学报》.2008,第43卷(第1期), * |
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| CN102409581A (en) | 2012-04-11 |
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