CN1111225C - Wing rail with special cross section for movable switch fork of railway and its manufacturing method - Google Patents
Wing rail with special cross section for movable switch fork of railway and its manufacturing method Download PDFInfo
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- CN1111225C CN1111225C CN 99115823 CN99115823A CN1111225C CN 1111225 C CN1111225 C CN 1111225C CN 99115823 CN99115823 CN 99115823 CN 99115823 A CN99115823 A CN 99115823A CN 1111225 C CN1111225 C CN 1111225C
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- rail
- wing
- standard gauge
- flange
- section
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Abstract
The present invention relates to a special profile wing rail used for movable point rail frogs for railways, and a manufacturing method thereof. A wing rail insertion block uses steel billet as raw materials and applies three-way pressure stress plastic forming to manufacture the billets of wing rail insertion blocks; the billets are machined in a mechanical mode after spheroidizing, annealing, straightening and normalizing so as to make one section of rail body in the middle to be formed into a special profile and the rail bodies at the two ends to be formed into standard rails; the machined wing rail insertion block is welded with the standard rails connected at the two ends to form the wing rail. The vertical main inertia shaft of the special profile of the wing rail manufactured by the present invention is approximately parallel to a standard vertical main inertia shaft. The stress distribution of the rail bottom of the wing rail is basically balanced, and the wing rail has the advantages of high strength, long service life and good service conditions and can satisfy the requirements for movable point rail frog wing rails by speed increase railways and high-speed railways.
Description
Technical field:
The present invention relates to a kind of Wing rail with special cross section for frog of movable rail and manufacture method thereof.
Background technology:
At present, the wing rail in the movable-point crossing that uses on the railway is at the flange of rail of the throat excision working edge of railway frog and form with the standard gauge of 60Kg/m.Because excision flange of rail section forms the second moment of area value of wing rail and reduces, the bending resistant section coefficient reduces, the more important thing is, the vertical principal axis of inertia of this wing rail and axes of inertia generation deflection vertical with rail, cause the stress distribution of the wing rail flange of rail unbalanced, excision flange of rail place stress increases considerably, and stress is poor, intensity reduces, can not be by fatigue test.Make this wing rail become the weak link of whole railway frog, directly influence the application life of railway movable-point crossing.
Summary of the invention:
The object of the present invention is to provide a kind of Wing rail with special cross section for frog of movable rail and manufacture method thereof, the vertical principal axis of inertia of its wing rail special cross section is approximate parallel with the vertical principal axis of inertia of rail, thereby makes the stress distribution of the wing rail flange of rail in a basic balance.And the intensity height, the life-span is long, and service condition is good.
The design scheme of Wing rail with special cross section for frog of movable rail of the present invention is: a kind of Wing rail with special cross section for frog of movable rail, comprise that the described wing rail of standard gauge (2) inserts the standard gauge (2) that piece (1) is connected with its two ends by wing rail and is welded to form, it is identical with standard gauge (2) that wing rail inserts piece (1) both ends rail bodies (3), the web of the rail thickness of the one section rail body in middle part (4) is thicker than the web of the rail of standard gauge (2), and flange of rail thickness is thicker than the flange of rail of standard gauge (2); And the web of the rail thickness of the web of the rail thickness of a side and standard gauge (2) equates, flange of rail width is littler than the flange of rail width of standard gauge (2), the rail head width of rail head width and standard gauge (2) equates, the web of the rail thickness of opposite side is thicker than the web of the rail of standard (2), the flange of rail width of flange of rail width and standard gauge (2) equates that the rail head width is bigger than the rail head width of standard gauge (2).
The flange of rail thickness that wing rail inserts piece (1) the one section rail body in middle part (4) is than the flange of rail width of the big 1～13MM of flange of rail thickness of standard gauge (2) and a side little 40～55MM of flange of rail width than standard gauge (2), the web of the rail thickness of opposite side is than the big 2～29MM of web of the rail thickness of standard gauge (2), and the rail head width is than the big 10～55MM of rail head width of standard gauge (2).
The changeover portion of the web of the rail of the wide variety Duan Yuqi both ends standard gauge bodies (3) of the big thickness section of the web of the rail, the flange of rail of wing rail insertion piece (1) the one section rail body in middle part (4) and rail head, the flange of rail, the flange of rail, rail head is type linearly.
Wing rail with special cross section for frog of movable rail of the present invention and manufacture method thereof are: 1. be raw material with the steel billet, use three-dimensional compressive stress hot pressing Plastic Forming and make wing rail insertion piece blank.2. the wing rail of making is inserted the piece blank and carry out machine after spheroidizing → aligning → normalizing, make its one section rail body in middle part (4) form special cross section, both ends rail bodies (3) form standard gauge, make wing rail and insert piece (1).3. the wing rail made being inserted standard gauge (2) that piece (1) is connected with its two ends welds together and has just formed described wing rail.
The present invention compared with prior art, because it is to be raw material with the steel billet that this wing rail inserts piece, using triaxial pressure hot pressing plastic forming process makes, make its middle part form special cross section by machine in addition, and the vertical principal axis of inertia of special cross section is approximate parallel with the vertical principal axis of inertia of rail, make the stress distribution of the wing rail flange of rail in a basic balance, the moment of inertia of its special cross section, intensity and fatigue limit are all than existing wing rail height after tested, therefore its service condition is good, long service life can satisfy speed-raising, the high-speed railway requirement to the movable-point crossing wing rail.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is 1 vertical view.
The specific embodiment:
Embodiment 1: 1. the steel billet with φ 320mm is raw material (chemical analysis sees Table 1), makes its Plastic Forming make wing rail by extrusion process (pressing shape than 〉=6) to insert the piece blank through using three-dimensional compressive stress (two to compressive strain, to stretching strain) (1200～1250 ℃ of temperature) under hot state behind the car light.
2. the wing rail of making is inserted the piece blank and after spheroidizing (790～810 ℃ of temperature) → aligning → normalizing (823～850 ℃ of temperature), carry out machine, it is identical with standard gauge (2) to make wing rail insert piece (1) both ends rail bodies (3), and the flange of rail thickness of the one section rail body in middle part (4) is than the thick 13mm of the flange of rail of standard gauge (2); And the web of the rail thickness of siding track waist thickness and standard gauge (2) equates, flange of rail width is than the little 40mm of flange of rail width of standard gauge (2), the rail head width of rail head width and standard gauge (2) equates, the rail web of the rail thickness of opposite side is than the thick 29mm of the web of the rail of standard gauge (2), and the flange of rail width of flange of rail width and standard gauge (2) equates; The rail head width is than the big 55mm of rail head width of standard gauge (2).The changeover portion of the web of the rail of the standard gauge body (3) at the wide variety Duan Yuqi both ends of the big thickness section of the web of the rail, the flange of rail and rail head, the flange of rail, the flange of rail, rail head type linearly in addition.So just made the one section rail body in middle part (4) and be special cross section, both ends rail bodies (3) are that the wing rail of standard gauge inserts piece (1).
3. the wing rail made being inserted standard gauge (2) that piece (1) is connected with its two ends welds together and has just formed Wing rail with special cross section for frog of movable rail of the present invention.
Embodiment 2: 1. the steel billet with φ 320mm is raw material (chemical analysis sees Table 1), makes its Plastic Forming make wing rail by extrusion process (pressing shape than 〉=6) to insert the piece blank through using three-dimensional compressive stress (two to compressive strain, to stretching strain) (1200～1250 ℃ of temperature) under hot state behind the car light.
2. the wing rail of making is inserted the piece blank and after spheroidizing (785～800 ℃ of temperature) → aligning → normalizing (830～850 ℃ of temperature), carry out machine, it is identical with standard gauge (2) to make wing rail insert piece (1) both ends rail bodies (3), and the flange of rail thickness of the one section rail body in middle part (4) is than the thick 10mm of the flange of rail of standard gauge (2); And the web of the rail thickness of siding track waist thickness and standard gauge (2) equates, flange of rail width is than the little 50mm of flange of rail width of standard gauge (2), the rail head width of rail head width and standard gauge (2) equates, the rail web of the rail thickness of opposite side is than the thick 16mm of the web of the rail of standard gauge (2), and the flange of rail width of flange of rail width and standard gauge (2) equates; The rail head width is than the big 40mm of rail head width of standard gauge (2).The changeover portion of the web of the rail of the standard gauge body (3) at the wide variety Duan Yuqi both ends of the big thickness section of the web of the rail, the flange of rail and rail head, the flange of rail, the flange of rail, rail head type linearly in addition.So just made the one section rail body in middle part (4) and be special cross section, both ends rail bodies (3) are that the wing rail of standard gauge inserts piece (1).
3. the wing rail made being inserted standard gauge (2) that piece (1) is connected with its two ends welds together and has just formed Wing rail with special cross section for frog of movable rail of the present invention.
Embodiment 3: 1. the steel billet with φ 335mm is raw material (chemical analysis sees Table 1), makes its Plastic Forming make wing rail by extrusion process (pressing shape than 〉=6) to insert the piece blank through using three-dimensional compressive stress (two to compressive strain, to stretching strain) (1200～1250 ℃ of temperature) under hot state behind the car light.
2. the wing rail of making is inserted the piece blank and after spheroidizing (785～800 ℃ of temperature) → aligning → normalizing (800～860 ℃ of temperature), carry out machine, it is identical with standard gauge (2) to make wing rail insert piece (1) both ends rail bodies (3), and the flange of rail thickness of the one section rail body in middle part (4) is than the thick 1mm of the flange of rail of standard gauge (2); And the web of the rail thickness of siding track waist thickness and standard gauge (2) equates, flange of rail width is than the little 55mm of flange of rail width of standard gauge (2), the rail head width of rail head width and standard gauge (2) equates, the rail web of the rail thickness of opposite side is than the thick 5mm of the web of the rail of standard gauge (2), and the flange of rail width of flange of rail width and standard gauge (2) equates; The rail head width is than the big 20mm of rail head width of standard gauge (2).The changeover portion of the web of the rail of the standard gauge body (3) at the wide variety Duan Yuqi both ends of the big thickness section of the web of the rail, the flange of rail and rail head, the flange of rail, the flange of rail, rail head type linearly in addition.So just made the one section rail body in middle part (4) and be special cross section, both ends rail bodies (3) are that the wing rail of standard gauge inserts piece (1).
3. the wing rail made being inserted standard gauge (2) that piece (1) is connected with its two ends welds together and has just formed Wing rail with special cross section for frog of movable rail of the present invention.Table 1: raw material chemical analysis (weight %)
| Chemical analysis | Embodiment 1 | | Embodiment 3 |
| C | 0.72 | 0.74 | 0.75 |
| Si | 0.25 | 0.27 | 0.30 |
| Mn | 1.25 | 1.2 | 1.3 |
| P | ∠0.035 | ∠0.035 | ∠0.035 |
| S | ∠0.03 | ∠0.03 | ∠0.03 |
| Al | ∠0.004 | ∠0.004 | ∠0.004 |
| V | 0.05 | ||
| Na | 0.03 | ||
| Re | 0.034 |
Claims (4)
1, a kind of Wing rail with special cross section for frog of movable rail, comprise standard gauge (2), it is characterized in that: described wing rail inserts the standard gauge (2) that piece (1) is connected with its two ends by wing rail and is welded to form, it is identical with standard gauge (2) that wing rail inserts piece (1) both ends rail bodies (3), the web of the rail thickness of the one section rail body in middle part (4) is thicker than the web of the rail of standard gauge (2), and flange of rail thickness is thicker than the flange of rail of standard gauge (2); And the web of the rail thickness of the web of the rail thickness of a side and standard gauge (2) equates, flange of rail width is littler than the flange of rail width of standard gauge (2), the rail head width of rail head width and standard gauge (2) equates, the web of the rail thickness of opposite side is thicker than the web of the rail of standard gauge (2), the flange of rail width of flange of rail width and standard gauge (2) equates that the rail head width is bigger than the rail head width of standard gauge (2).
2, Wing rail with special cross section for frog of movable rail according to claim 1, it is characterized in that: wing rail inserts the flange of rail thickness big 1～13mm of the flange of rail thickness of piece (1) the one section rail body in middle part (4) than standard gauge (2), and the flange of rail width of a side is than the little 40～55mm of flange of rail width of standard gauge (2), the web of the rail thickness of opposite side is than the big 2～29mm of web of the rail thickness of standard gauge (2), and the rail head width is than the big 10～55mm of rail head width of standard gauge (2).
3, Wing rail with special cross section for frog of movable rail according to claim 1 is characterized in that: the changeover portion of the web of the rail of the wide variety Duan Yuqi both ends standard gauge bodies (3) of the big thickness section of the web of the rail, the flange of rail of wing rail insertion piece (1) the one section rail body in middle part (4) and rail head, the flange of rail, the flange of rail, rail head is type linearly.
4, a kind of manufacture method of Wing rail with special cross section for frog of movable rail is characterized in that:
1. be raw material with the steel billet, use three-dimensional compressive stress hot pressing Plastic Forming and make wing rail insertion piece blank.
2. the wing rail of making is inserted the piece blank and carry out machine after spheroidizing → aligning → normalizing, make its one section rail body in middle part (4) form special cross section, both ends rail bodies (3) form standard gauge, make wing rail and insert piece (1).
3. the wing rail made being inserted standard gauge (2) that piece (1) is connected with its two ends welds together and has just formed described wing rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115823 CN1111225C (en) | 1999-07-20 | 1999-07-20 | Wing rail with special cross section for movable switch fork of railway and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115823 CN1111225C (en) | 1999-07-20 | 1999-07-20 | Wing rail with special cross section for movable switch fork of railway and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1281077A CN1281077A (en) | 2001-01-24 |
| CN1111225C true CN1111225C (en) | 2003-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99115823 Expired - Lifetime CN1111225C (en) | 1999-07-20 | 1999-07-20 | Wing rail with special cross section for movable switch fork of railway and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1111225C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245577B (en) * | 2008-03-07 | 2010-06-16 | 中铁宝桥股份有限公司 | Method for improving abrasion resistance of switch tongues point rail terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695294A (en) * | 2015-02-04 | 2015-06-10 | 北京中铁科新材料技术有限公司 | Method for adjusting straightness of on-line steel rail welding joint |
-
1999
- 1999-07-20 CN CN 99115823 patent/CN1111225C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245577B (en) * | 2008-03-07 | 2010-06-16 | 中铁宝桥股份有限公司 | Method for improving abrasion resistance of switch tongues point rail terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281077A (en) | 2001-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA RAILWAY BAOJI BRIDGE GROUP CO., LTD. Free format text: FORMER NAME: BAOQIAO CO., LTD., MINISTRY OF RAILWAYS |
|
| CP03 | Change of name, title or address |
Address after: 721006 Baoji Qing Jiang Road, Shaanxi, No. 80 Patentee after: China Railway Baoji Bridge Group Co., Ltd. Address before: Baoji City, Shaanxi Province, Sichuan Shaanxi Road 721006 Patentee before: Baoqiao Co., Ltd., Ministry of Railways |
|
| CX01 | Expiry of patent term |
Granted publication date: 20030611 |
|
| CX01 | Expiry of patent term |