CN2337181Y - Special section wing rail - Google Patents
Special section wing rail Download PDFInfo
- Publication number
- CN2337181Y CN2337181Y CN 98207649 CN98207649U CN2337181Y CN 2337181 Y CN2337181 Y CN 2337181Y CN 98207649 CN98207649 CN 98207649 CN 98207649 U CN98207649 U CN 98207649U CN 2337181 Y CN2337181 Y CN 2337181Y
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- rail
- section
- special section
- wing
- special
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Abstract
The utility model relates to a special section wing rail which is used for constituting railway switches and frogs. The front segment of the special section wing rail is rolled into a standard rail, and is connected with a guide rail. The middle changes gradually from a special section segment to a standard rail section, and then is welded with a standard rail of required length to meet use requirements. The rail web and the rail bottom of the special section form symmetrical state, the symmetrical centre line of the rail web and the rail bottom deviates outwards from the centre line of the rail head of the standard rail segment, the width of the rail head to the inside of the centre line of the rail web is bigger than the outside, and the rail head forms asymmetrical state. All items of mechanics performance indexes of the special section of the utility model are obviously better than the mechanics performance indexes of the existing wing rails such as the inertia moment of horizontal shafts, the maximum tension stress born by rail bottoms, etc.
Description
The utility model relates to the wing rail of the railway frog that is used to form railway switch.
Railway switch is one of key factor of restriction train running speed, and the key of speed-raising and high-speed switch is whether the structure design of its movable-point crossing throat wing rail is reasonable.The acclerating road switch wing rail of existing production and use adopts the standard rail, locates the inboard flange of rail of cut-out at railway frog first towing point (throat), is used to realize the cooperation and the conversion of long heart rail together.The result reduces the intensity of wing rail greatly, and the suffered maximum tension stress of the flange of rail doubles than standard gauge, and the repeated bend test in kind of wing rail can not reach requirement.
The purpose of this utility model is the problem at above-mentioned existing acclerating road switch wing rail existence, and provides a kind of under the prerequisite that satisfies the railway switch structural requirement, has the higher intensity and the special section wing rail in life-span.
The technical scheme that realizes above-mentioned purpose is: design a kind of special section wing rail, it has leading portion and back segment with the identical section of line standard rail section, has special section section through the fillet smooth transition with respect to the railway frog first towing point place between its leading portion and back segment; This special section web of the rail, the flange of rail are symmetry status, and its symmetrical center line departs from laterally with respect to standard gauge section rail head center line, and rail head is asymmetrical state with respect to the inboard width of web of the rail center line greater than the outside; The flange of rail inner side edge of its special section section is with respect to rail head inner side edge indent, and the rail head outside is with respect to standard gauge section rail head outer side edges evagination.
The technical scheme that realizes above-mentioned purpose also comprises: this wing rail has the AT rail section section that smooth transition is connected between leading portion and special section section.
Die-forging forming is adopted at the U.S. key of this wing rail position, compares with the wing rail of existing use, and its weakest section section structure is reasonable in design, and inherent quality is good, and the intensity and the life-span of whole wing rail improve greatly, and the rail repeated bend test meets the demands.
Fig. 1 is this wing rail front view and each feature cross-section structure;
Fig. 2 is the vertical view of Fig. 1.
The utility model is described in further detail below in conjunction with drawings and Examples.This wing rail can adopt section bar through die-forging forming.The section of its leading portion 1 and back segment 3 is identical with line standard rail section, between forward and backward two sections, connects special section section 2 with respect to the railway frog first towing point place through the fillet smooth transition.
Consider the simplification of contour forging technique, but the leading portion 1 of the standard gauge section of die-forging forming special section section and transition moulding and back segment 3 are welded into the wing rail length that satisfies instructions for use with standard gauge again.
In order further to simplify production technology, cut down finished cost, it is mother metal that this wing rail can adopt the AT rail of standard, provide as accompanying drawing, leading portion 1 is rolled into standard gauge by 4 transition of AT rail section section and is connected with guide rail, other end transition is rolled into special section section 2 and carries out the transition to the standard gauge section of back segment 3, is welded into the length that satisfies instructions for use with standard gauge again.
This special section wing rail is designed to example with No. 30 track switches of 60kg/m rail, adopt the 60AT rail to change the forging special section wing rail as mother metal, its wing rail special section section rail head increases to 97 millimeters by 73 millimeters, web of the rail center is than 30 millimeters of rail head off-centrings, the rail height increases to 176 millimeters by 152 millimeters, and flange of rail width reduces to 100 millimeters by 152 millimeters.This cross section characteristic parameter and 60AT rail, now use wing rail relatively to see Table one:
Table one
By table as seen, the existing extraordinary wing rail section that designs, to the suffered maximum tension stress of the moment of inertia of level and vertical axis and the flange of rail than 60AT rail mother metal with now use wing rail all to have greatly improved.
This wing rail adopts internationally recognized computer finite element structural analysis software (NSC/NASTRAN) and analysis of fatigue software (NSC/FATIGUE) to this special section wing rail and 60AT rail mother metal with now use wing rail to carry out intensity and Calculation of Fatigue Life.Calculating is carried out according to TB1354-79 rail repeated bend test standard in kind.Long 1.3 meters of test specimen, 1 meter of offset distance, cycle characteristics r=0.2, Pmax/Pmin=48t/9.6t.Obtain a result and see Table two: table two
| The rail type | Calculate fatigue life (ten thousand times) |
| AT rail mother metal | ＞200 |
| Now use wing rail | 10.6 |
| Special section wing rail | ＞200 |
Get 3 of this special type wing rail test specimens, on ZDMH2000KN type endurance testing machine, carry out fatigue test in kind.Wherein two vertical bearing load ratios are Pmax/Pmin=48t/9.6t; A side direction bearing load is than being Pmax/Pmin=12t/2.4t.When doing side direction carrying fatigue test, support place and carrying place all add cushion block.Loading the pressure head radius of curvature is the R420 millimeter, and bearing stride is 1 meter, cycle specificity r=0.2, and three test specimens are all by 2,000,000 fatigue tests.
Claims (2)
1. special section wing rail has leading portion (1) and back segment (3) with the identical section of line standard rail section, it is characterized in that: this wing rail has special section section (2) through the fillet smooth transition with respect to the railway frog first towing point place between forward and backward two sections; This special section web of the rail, the flange of rail are symmetry status, and its symmetrical center line departs from laterally with respect to standard gauge section rail head center line, and rail head is asymmetrical state with respect to the inboard width of web of the rail center line greater than the outside; The flange of rail inner side edge of its special section section (2) is with respect to rail head inner side edge indent, and the rail head outer side edges is with respect to standard gauge section rail head outer side edges evagination.
2. special section wing rail according to claim 1 is characterized in that: this wing rail has the AT rail section section (4) that smooth transition is connected between leading portion (1) and special section section (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207649 CN2337181Y (en) | 1998-07-28 | 1998-07-28 | Special section wing rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207649 CN2337181Y (en) | 1998-07-28 | 1998-07-28 | Special section wing rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2337181Y true CN2337181Y (en) | 1999-09-08 |
Family
ID=33963535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98207649 Expired - Lifetime CN2337181Y (en) | 1998-07-28 | 1998-07-28 | Special section wing rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2337181Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127883A (en) * | 2011-01-21 | 2011-07-20 | 王平 | Combined railway frog |
| CN104452486A (en) * | 2014-11-21 | 2015-03-25 | 中铁宝桥集团有限公司 | 59R2 special-shaped rail and forming method thereof |
| CN109112907A (en) * | 2018-09-04 | 2019-01-01 | 中铁宝桥集团有限公司 | A kind of wing rail toe-end structure and its forming method |
-
1998
- 1998-07-28 CN CN 98207649 patent/CN2337181Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127883A (en) * | 2011-01-21 | 2011-07-20 | 王平 | Combined railway frog |
| CN104452486A (en) * | 2014-11-21 | 2015-03-25 | 中铁宝桥集团有限公司 | 59R2 special-shaped rail and forming method thereof |
| CN109112907A (en) * | 2018-09-04 | 2019-01-01 | 中铁宝桥集团有限公司 | A kind of wing rail toe-end structure and its forming method |
| CN109112907B (en) * | 2018-09-04 | 2023-08-25 | 中铁宝桥集团有限公司 | Wing rail toe end structure and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |