CN202337922U - Point rail and wing rail of alloy steel combined frog - Google Patents
Point rail and wing rail of alloy steel combined frog Download PDFInfo
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- CN202337922U CN202337922U CN2011204458699U CN201120445869U CN202337922U CN 202337922 U CN202337922 U CN 202337922U CN 2011204458699 U CN2011204458699 U CN 2011204458699U CN 201120445869 U CN201120445869 U CN 201120445869U CN 202337922 U CN202337922 U CN 202337922U
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Abstract
The utility model relates to a point rail and a wing rail of alloy steel combined frog, which are capable of effectively strengthening the smoothness of the rail top of frog, improving the stress states of the point rail and the wing rail and prolonging the service life of the integral frog basically; the point rail in the point rail and the wing rail of the alloy steel combined frog is raised to reach 5mm from the position which is 30 to 50mm wide from the throat part of the frog to the top of the point rail; the decrease values of the top surface of the point rail are as follows: 10mm from the position of 10mm top width, 3mm to 4mm from the position of 20mm top width, 0.5mm from the position of 50mm top width and 0mm from the position of 71mm top width; and a rail head on the working side of the wing rail corresponding to the position of the point rail of 20 to 50mm wide is cut by 0mm. The point rail and wing rail of the alloy steel combined frog disclosed by the utility model has the advatanegs of simple structure, strengthening rail top smoothness of the frog, improving the stress states of the point rail and the wing rail and prolonging the service life of the integral frog and is easy to assembling.
Description
Technical field
The utility model relates to a kind of tread ride comfort that can strengthen railway frog effectively; Improve the stress of heart rail and wing rail; Can fundamentally improve the whole railway frog alloy steel combined frog crossing point rail wing rail in application life of organizing again, belong to alloy steel combined frog crossing point rail wing rail and make the field.
Background technology
The alloy steel assembled frog is to adopt interval iron and high-strength bolt to assemble between alloy steel core rail and the online heat-treated rail.Heart rail adopts the alloy steel material of high strength, high rigidity to make the application life that can effectively improve railway frog; Wing rail, fork adopt common online heat-treated rail manufacturing with rail; Realized the field Welding of gapless track, structurally thoroughly eliminated rail joint, reduced impact and the vibration of train at connector area; Prolonged the application life of wheel, rail parts; And level and smooth operation surface is provided, has brought many benefits for train operation and traffic safety, obtained the extensive use of each Railway Bureau.
Along with alloy steel assembled frog promoting the use of on gapless track, expose early stage flake-off piece of heart rail and wing rail gradually and wear and tear very fast two ubiquity problems.This mainly is that the dynamic action between wheel and rail that exists bigger vertical irregularity to produce owing to alloy steel assembled frog tread face is bigger, causes the damage to heart rail and wing rail.Therefore, need the heart rail wing rail relative position relation of alloy steel assembled frog is 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.
The utility model content
Purpose of design: avoid the weak point in the background technology, design a kind of tread ride comfort that can strengthen railway frog effectively, improve the stress of heart rail and wing rail, can fundamentally improve the whole railway frog alloy steel combined frog crossing point rail wing rail in application life of organizing again.
Design scheme: in order to realize above-mentioned purpose of design.The application is intended to research and develop the heart rail wing rail relative position relation of design alloy steel assembled 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 early stage flake-off piece of resolution rail and wing rail and wear and tear very fast phenomenon, thus the application life of improving whole group railway frog.Promptly; In alloy steel assembled frog design process; Stressed excessive for avoiding the weak section of heart rail to shift to an earlier date with the wing rail abrasion; Designed five kinds of heart rail wing rail relative position relations (seeing table 1), and analyzed contrast, finally drawn optimization design scheme from the transfer of the wheel load between vertical irregularity, heart rail and wing rail, three main aspects of wheel power additional force.
Table 1 alloy steel combined frog crossing point rail wing rail relative position relation design (is for No. 12 example with the 60kg/m rail)
One, at first sequence number 1～4 scheme is compared:
When 1, train was crossed trouble, because the variation of wheel track contact point can inevitably produce vertical irregularity, the vertical irregularity of stock rail one side was less, and the vertical irregularity of railway frog one side is bigger.Vertical irregularity is to cause railway points system that the exciting source of vibration takes place, and is the principal element of influence driving stationarity and safety.The irregularity wavelength is shorter, amplitude is big more, and the vertical dynamic action between wheel track is big more.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, the wheel track 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 bigger, and heart rail is prone to the hurt disease; HGPC04G type assembled frog wheel load branchpoint is between the wide 30～40mm of heart tread, and wing rail is stressed bigger, and because of the contact area between wheel and wing rail less (the wheel track contact point is near near the gauge angle), so the 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, when train during through one section complete smooth-going track, rail has an even deflection, and this moment, rail did not both have additional depression, and wheel does not have additional dynamic pressure yet.But when train passes through the vertical irregularity of track, new dynamic equilibrium condition has appearred.Before wheel got into irregularity, it is parallel with former rail level that the wheel center of gravity keeps, and after getting into irregularity; The wheel center of gravity suddenly descends and is equivalent to the degree of depth of irregularity; Make wheel spring lower part produce forced vibration together with the part track, the result makes rail produce additional depression, and wheel produces additional dynamic pressure.This forced vibration continues up to the irregularity terminal point and ends.When wheel rolls irregularity away from; Because of also having certain vertical vibrating acceleration and displacement, therefore free vibration will outside the irregularity scope, be continued to produce, under the effect of damping; Outside irregularity certain a bit; The influence of irregularity complete obiteration soon, the depression of rail returns to original position, also no longer includes any additional dynamic pressure on the wheel.
China's freight car wheel rolling circle diameter is 840mm, and the single-wheel unsprung mass is about 1200kg, and assembled frog fastener fulcrum rigidity Design is 75kN/mm, and the pillow spacing is 600mm, and goods train is 120km/h to switch crossing speed directly.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 is as shown in Figure 1, sees from the angle of wheel power additional force, and is optimum with HGPC04X type assembled frog, 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 is optimum.
Two, be further to reduce dynamic action between wheel and rail; On the basis of HGPC04X, be optimized (seeing sequence number 5 schemes in the table 1) once more; Through to the vertical irregularity before and after optimizing, the comparison (seeing Fig. 2, Fig. 3) of power additional force, HGPC04X optimizes back irregularity amplitude and the power additional force all decreases.
Conclusion: through above analysis contrast, sequence number 5 schemes are optimal case, and promptly wing rail is raised to 5mm from the wide 30mm of throat of frog to heart tread; Heart tread face reduction value is for 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 combined frog crossing point rail wing rail, wing rail is raised to 5mm from the wide 30mm-50mm of throat of frog to heart tread in the said alloy steel combined frog crossing point rail wing rail; Heart tread face reduction value is for 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 utility model is compared with background technology, and the one, simple in structure, be easy to assembling; The 2nd, strengthened the tread ride comfort of railway frog, improve the stress of heart rail and wing rail, improve the application life of whole group railway frog.
Description of drawings
Fig. 1 is the sketch map of power additional force.
Fig. 2 is that the vertical irregularity before and after HGPC04X optimizes compares sketch map.
Fig. 3 is that the power additional force before and after HGPC04X optimizes compares sketch map.
Fig. 4 is the structural representation of alloy steel combined frog crossing point rail wing rail.
The specific embodiment
Embodiment 1: with reference to accompanying drawing 4.A kind of alloy steel combined frog crossing point rail wing rail, the manufacturing process of alloy steel combined frog crossing point rail wing rail is a prior art, is not described herein at this.Wing rail is raised to 5mm from the wide 30mm-50mm of throat of frog to heart tread in the said alloy steel combined frog crossing point rail wing rail; Heart tread face reduction value is for 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 the alloy steel assembled frog is to assemble, so should strictly control the requirement of railway frog tread flatness in process of production; High-strength bolt must be implemented to tighten according to design specifications before dispatching from the factory, prevent railway frog in use heart rail wing rail relative position relation change, thereby influence application life of railway frog.
Embodiment 2: on the basis of embodiment 1, wing rail is raised to 5mm from the wide 30mm of throat of frog to heart tread in the said alloy steel combined frog crossing point rail wing rail; Heart tread face reduction value is for 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.
What need understand is: though the foregoing description is to the mentality of designing of the utility model detailed text description of contrasting; But these text descriptions; Just the simple text of the utility model mentality of designing is described; Rather than to the restriction of this exposed installation meter thinking, any combination, increase or modification that does not exceed the utility model mentality of designing all falls in the protection domain of the utility model.
Claims (2)
1. alloy steel combined frog crossing point rail wing rail, it is characterized in that: wing rail is raised to 5mm from the wide 30mm-50mm of throat of frog to heart tread in the said alloy steel combined frog crossing point rail wing rail; Heart tread face reduction value is for 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 combined frog crossing point rail wing rail according to claim 1 is characterized in that: wing rail is raised to 5mm from the wide 30mm of throat of frog to heart tread in the said alloy steel combined frog crossing point rail wing rail; Heart tread face reduction value is for 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204458699U CN202337922U (en) | 2011-11-12 | 2011-11-12 | Point rail and wing rail of alloy steel combined frog |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204458699U CN202337922U (en) | 2011-11-12 | 2011-11-12 | Point rail and wing rail of alloy steel combined frog |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202337922U true CN202337922U (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204458699U Withdrawn - After Issue CN202337922U (en) | 2011-11-12 | 2011-11-12 | Point rail and wing rail of alloy steel combined frog |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202337922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409581A (en) * | 2011-11-12 | 2012-04-11 | 中铁宝桥集团有限公司 | Alloy steel assembly of frog, point rail and wing rails |
-
2011
- 2011-11-12 CN CN2011204458699U patent/CN202337922U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409581A (en) * | 2011-11-12 | 2012-04-11 | 中铁宝桥集团有限公司 | Alloy steel assembly of frog, point rail and wing rails |
| CN102409581B (en) * | 2011-11-12 | 2014-08-13 | 中铁宝桥集团有限公司 | Alloy steel assembly of frog, point rail and wing rails |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120718 Effective date of abandoning: 20140813 |
|
| RGAV | Abandon patent right to avoid regrant |