CN108842525B - Special-shaped transition steel rail for connecting groove-shaped rail and I-shaped rail - Google Patents
Special-shaped transition steel rail for connecting groove-shaped rail and I-shaped rail Download PDFInfo
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- CN108842525B CN108842525B CN201811030903.9A CN201811030903A CN108842525B CN 108842525 B CN108842525 B CN 108842525B CN 201811030903 A CN201811030903 A CN 201811030903A CN 108842525 B CN108842525 B CN 108842525B
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- 230000007704 transition Effects 0.000 title claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 238000005242 forging Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 18
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B5/00—Rails; Guard rails; Distance-keeping means for them
- E01B5/02—Rails
- E01B5/08—Composite rails; Compound rails with dismountable or non-dismountable parts
- E01B5/10—Composite grooved rails; Inserts for grooved rails
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B5/00—Rails; Guard rails; Distance-keeping means for them
- E01B5/02—Rails
- E01B5/14—Rails for special parts of the track, e.g. for curves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a special-shaped transition steel rail for connecting a groove-shaped rail and an I-shaped rail, which comprises a groove-shaped rail section, a transition section and an I-shaped rail connecting section which are connected into a whole, wherein the shape and the height of a rail head are the same as those of the groove-shaped rail, the working edge is consistent with the working edge direction of the connected groove-shaped rail and I-shaped rail, the depth of the rail bottom of the I-shaped rail connecting section is smaller than that of the groove-shaped rail section, and the rail bottom of the transition section is an inclined rail bottom for connecting the groove-shaped rail section to the I-shaped rail connecting section. The invention can be directly manufactured by forging and pressing the groove-shaped rail, a die for integral casting is not required to be designed, the forging and pressing speed and the energy-saving effect are better than those of the integral casting transition rail, meanwhile, the strength of the invention is not affected basically, and the invention has better reliability compared with the prior art.
Description
Technical Field
The invention relates to the field of rails, in particular to a special-shaped transition steel rail for connecting a groove-shaped rail and an I-shaped rail.
Background
The prior development of public transportation is an important transportation development strategy in China, and modern tramcars are taken as a middle-level public transportation system, and become the necessary trend of public transportation development by the characteristics of humanization, large capacity, environmental protection and energy conservation.
In the track system of modern tram, the positive line mainly adopts groove type steel rail. Under the condition that different paving forms such as greening paving, hardening paving and the like are adopted by the modern tram, the groove type rail can effectively play a role in isolating and protecting the paving structure with the wheel rail, and meanwhile, the rail lip can play a role in protecting the rail, so that the operation reliability of the tram is improved. Considering the economical and technical requirements, the modern tram mainly adopts 50kg/m steel rail at the yard line, which is an I-shaped rail. At some line nodes, the channel steel rail is connected with the I-shaped rail. The existing connecting methods of different rail types of steel rails mainly comprise two types of special-shaped fish tail clamping plate connecting methods and different rail type welding methods.
1. Special-shaped fish tail clamping plate connecting method
For the special-shaped fishtail splint connection method, because the height sections of different rail types of the modern tram are different, the stress generated by the connection point is concentrated, the manufacturing process is complex, the strength of the special-shaped fishtail splint is not as good as that of a common fishtail plate, the fracture condition is often generated, and the driving safety is seriously endangered.
2. Rail type welding method for different rails
For different rail type welding methods, special-shaped welding spots are needed to be adopted to weld two different types of rails with certain height difference together. Because the existing special-shaped welding process is still immature, the welded joint has poor toughness, large difference between mechanical properties and steel rail parent metal, obvious stress concentration effect, and the situation that cracks, even breaks, are easy to occur at structures with large differential settlement such as ballast beds and the like, and the driving safety is seriously endangered. The sections connected by the method often need to adopt high-cost structural schemes such as an integral ballast bed, the economy is poor, and the passing speed of vehicles is required to be limited, so that the operation efficiency of the modern tram is affected.
The utility model patent of the application number 201520006789.1 discloses a transition rail for connecting different rail types of a modern tram, a groove-shaped rail head and an I-shaped rail head are adopted at two ends so as to be convenient for respectively welding and connecting the groove-shaped rail and the I-shaped rail, and an inclined plane transition connection is adopted at the middle transition section.
Disclosure of Invention
The invention aims to provide a special-shaped transition rail for connecting a groove-shaped rail and an I-shaped rail, so as to solve the defects that the connection strength between the groove-shaped rail and the I-shaped rail of different types is insufficient, the adopted transition rail increases the production cost and influences the stability of a vehicle in the prior art.
The special-shaped transition steel rail for connecting the groove-shaped rail and the I-shaped rail comprises a groove-shaped rail section, a transition section and an I-shaped rail connecting section which are integrally connected, wherein the shape and the height of a rail head are the same as those of the groove-shaped rail, the working edge is consistent with the working edge direction of the connected groove-shaped rail and I-shaped rail, the rail bottom depth of the I-shaped rail connecting section is smaller than that of the groove-shaped rail section as required, and the rail bottom of the transition section is an inclined rail bottom for connecting the groove-shaped rail section to the I-shaped rail connecting section.
Preferably, the special-shaped transition steel rail is formed by forging and pressing a section of groove-shaped rail, and the thickness of the rail web in the transition section is larger than that of the rail web in the section of the groove-shaped rail.
Preferably, the width of the rail bottom of the transition section is larger than that of the connected I-shaped rail, the width of the rail bottom of the connecting end of the I-shaped rail connecting section is equal to that of the I-shaped rail, and one side of the connecting end of the I-shaped rail connecting section is provided with a chamfer.
Preferably, the side face of the rail web at the connecting end of the I-shaped rail connecting section is welded with a reinforcing plate, and the end face of the reinforcing plate is welded with the end face of the rail web of the connected I-shaped rail.
Preferably, the length of the reinforcing plate is equal to the sum of the lengths of the transition section and the i-rail connecting section.
Preferably, the shape of the reinforcing plate is matched with the shapes of the transition section and the rail web side surfaces of the I-shaped rail connecting section, and the upper side and the lower side of the reinforcing plate are bonded and welded to the rail head bottom surface and the rail bottom top surface of the special-shaped transition steel rail.
Preferably, the outer side of the reinforcing plate is welded with the welding area of the rail web and then polished to smooth transition.
Preferably, the length of the transition section is not less than 170mm, and the length of the I-shaped rail connecting section ranges from 90 mm to 120mm.
The invention has the advantages that: the invention is similar to the groove rail in structure, can be directly manufactured by forging and pressing the groove rail, does not need to design a die for integral casting, has the forging and pressing speed and energy-saving effect superior to those of the integral casting transition rail, and has the advantages of basically no influence on the strength and better reliability compared with the prior art. Meanwhile, as the directions of the working edges are consistent, the stability is better when the vehicle runs.
Because the web of the special-shaped transition rail and the web of the I-shaped rail are not on the same surface, effective welding is difficult to perform. According to the invention, the reinforcing plate is welded on the side face of the rail web, and the defect of immature special-shaped welding process is overcome by welding the reinforcing plate and the end face of the rail web of the I-shaped rail. The rail web of the special-shaped transition rail can be welded with the end face of the reinforcing plate welded on the side face of the I-shaped rail, so that the effect of increasing the welding area and improving the welding strength is achieved.
Drawings
FIG. 1 is a schematic view of the structure of the invention without welding the reinforcing plate;
FIG. 2 is a left side view of the structure shown in FIG. 1;
FIG. 3 is a schematic view of the welded reinforcing plate according to the present invention;
FIG. 4 is a left side view of the structure shown in FIG. 3;
fig. 5 is a schematic structural view of the present invention after welding with an i-rail.
In the above figures: 1. an I-shaped rail connecting section; 2. a transition section; 3. the rail comprises a groove type rail section, 4, rail heads, 5, rail webs, 6, rail bottoms, 7, reinforcing plates, 8, chamfers, 9 and I-shaped rails.
Detailed Description
The following detailed description of the embodiments of the invention, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate, and thorough understanding of the inventive concepts and aspects of the invention by those skilled in the art.
As shown in fig. 1-5, the invention provides a special-shaped transition steel rail for connecting a groove-shaped rail and an i-shaped rail, which comprises a groove-shaped rail section 3, a transition section 2 and an i-shaped rail connecting section 1 which are connected into a whole. The end face shape of the groove-shaped track section 3 is the same as the end face of the groove-shaped track to be connected, so that the end part of the groove-shaped track section 3 can be welded at the end part of the groove-shaped track relatively easily, and the groove-shaped track section has relatively good connection strength and does not generate stress concentration.
The shape and the height of the rail head 4 are the same as those of the groove type rail, and the working edge is consistent with the working edge direction of the connected groove type rail and I-shaped rail 9, so that the working edge does not need to pass through inclined plane transition, and the running stability of the vehicle is higher. The end of the I-shaped rail connecting section 1 is welded with the end of the I-shaped rail 9, the depth of the rail bottom 6 of the I-shaped rail connecting section 1 is smaller than that of the groove-shaped rail section 3 as well as that of the I-shaped rail 9 to be connected, and the rail bottom 6 of the transition section 2 is an inclined rail bottom 6 for connecting the groove-shaped rail section 3 to the I-shaped rail connecting section 1. Thus, the depth of the rail bottom 6 at the joint of the I-shaped rail 9 and the special-shaped transition rail is ensured to be the same. The width of the rail bottom 6 of the transition section 2 is larger than that of the connected I-shaped rail 9, the width of the rail bottom 6 of the connecting end of the I-shaped rail connecting section 1 is equal to that of the I-shaped rail 9, and one side of the connecting end of the I-shaped rail connecting section 1 is provided with a chamfer 8 formed by chamfering. The rail head 4 and the rail bottom 6 of the special-shaped transition rail have the same shape as the end face of the I-shaped rail 9 at the end face part connected with the I-shaped rail 9, and the connection strength is not reduced due to special shapes of the rail head and the rail bottom during welding, so that the service life is not influenced.
The special-shaped transition steel rail is formed by forging and pressing a section of groove-shaped rail, and the thickness of a part of rail web 5 in the transition section 2, of which the height is smaller than that of the groove-shaped rail section, is larger. The whole casting process is unnecessary from the beginning, and the equipment, the processing materials and the processing time are greatly reduced compared with the prior art, so the cost is lower, the manufacture is convenient, and the method is suitable for mass production.
The side face of the rail web 5 at the connecting end of the I-shaped rail connecting section 1 is welded with a reinforcing plate 7, and the end face of the reinforcing plate 7 is welded with the end face of the rail web 5 of the connected I-shaped rail 9. The length of the stiffening plate 7 is equal to the sum of the lengths of the transition section 2 and the i-rail connecting section 1. The shape of the reinforcing plate 7 is matched with the shapes of the transition section 2 and the side face of the rail web 5 of the I-shaped rail connecting section 1, and the upper side and the lower side of the reinforcing plate 7 are bonded and welded to the bottom face of the rail head 4 and the top face of the rail bottom 6 of the special-shaped transition rail. The web 5 of the original special-shaped transition steel rail is not coplanar with the web 5 of the I-shaped rail 9, so that direct welding is difficult, the thickness of a connecting end is increased through the reinforcing plate 7, and the special-shaped transition steel rail can be welded with the end face of the web 5 of the I-shaped rail 9, so that the special-shaped transition steel rail can be firmly welded with the I-shaped rail 9. In addition, the longer length of the reinforcing plate 7 can improve the strength of the part (namely the special-shaped joint) provided with the reinforcing plate 7, and the outer side of the reinforcing plate 7 is polished to smooth transition after being welded with the welding area of the rail web 5, so that the stress concentration of the connecting part of a user can be greatly reduced, and the service life is prolonged.
The length of the transition section 2 is not less than 170mm, and the length of the I-shaped rail connecting section 1 ranges from 90 mm to 120mm. Therefore, the connection strength of the special-shaped transition steel rail can be ensured, 300 ten thousand times of vibration impact can be born under the conditions that the pressure of the rail bottom 6 is 130MPa and the fatigue load is 174KN, and the metal fatigue resistance is good.
The special-shaped transition steel rail provided by the invention is manufactured by forging and pressing the groove-shaped rail, a die for integral casting is not required to be designed, and the forging and pressing speed and the energy-saving effect are better than those of the integrally cast transition rail.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of being modified or applied to other applications without modification, as long as various insubstantial modifications of the method concept and technical scheme of the invention are adopted, all within the scope of the invention.
Claims (4)
1. A abnormal shape transition rail that is used for groove type rail and I-shaped rail to connect which characterized in that: the novel rail head comprises a groove-shaped rail section (3), a transition section (2) and an I-shaped rail connecting section (1) which are connected into a whole, wherein the shape and the height of a rail head (4) are the same as those of the groove-shaped rail, the working edge is consistent with the working edge direction of the connected groove-shaped rail and I-shaped rail (9), the depth of a rail bottom (6) of the I-shaped rail connecting section (1) is the same as that of the I-shaped rail (9) to be connected and is smaller than that of the groove-shaped rail section (3), and the rail bottom (6) of the transition section (2) is an inclined rail bottom (6) for connecting the groove-shaped rail section (3) to the I-shaped rail connecting section (1);
The width of the rail bottom (6) of the transition section (2) is larger than that of the connected I-shaped rail (9), the width of the rail bottom (6) of the connecting end of the I-shaped rail connecting section (1) is equal to that of the I-shaped rail (9), and one side of the connecting end of the I-shaped rail connecting section (1) is provided with a chamfer angle;
the side face of the rail web (5) at the connecting end of the I-shaped rail connecting section (1) is welded with a reinforcing plate (7), and the end face of the reinforcing plate (7) is welded with the end face of the rail web (5) of the connected I-shaped rail (9);
the length of the reinforcing plate (7) is equal to the sum of the lengths of the transition section (2) and the I-shaped rail connecting section (1);
The shape of the reinforcing plate (7) is matched with the shape of the side face of the rail web (5) of the transition section (2) and the I-shaped rail connecting section (1), and the upper side and the lower side of the reinforcing plate (7) are bonded and welded to the bottom face of the rail head (4) and the top face of the rail bottom (6) of the special-shaped transition rail.
2. A profiled transition rail for use in connection with grooved rails and i-rails as claimed in claim 1 wherein: the special-shaped transition steel rail is formed by forging and pressing a section of groove-shaped rail, and the thickness of a part of rail web (5) in the transition section (2) is larger, wherein the height of the part of rail web (5) is smaller than that of the groove-shaped rail section.
3. A profiled transition rail for use in connection with grooved rails and i-rails as claimed in claim 1 wherein: and the outer side of the reinforcing plate (7) is welded with the welding area of the rail web (5) and then polished to smooth transition.
4. A profiled transition rail for use in connection with grooved rails and i-rails as claimed in claim 1 wherein: the length of the transition section (2) is not less than 170mm, and the length of the I-shaped rail connecting section (1) ranges from 90 mm to 120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030903.9A CN108842525B (en) | 2018-09-05 | 2018-09-05 | Special-shaped transition steel rail for connecting groove-shaped rail and I-shaped rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030903.9A CN108842525B (en) | 2018-09-05 | 2018-09-05 | Special-shaped transition steel rail for connecting groove-shaped rail and I-shaped rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108842525A CN108842525A (en) | 2018-11-20 |
| CN108842525B true CN108842525B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811030903.9A Active CN108842525B (en) | 2018-09-05 | 2018-09-05 | Special-shaped transition steel rail for connecting groove-shaped rail and I-shaped rail |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518549B (en) * | 2018-12-28 | 2024-02-27 | 泉州市海恩德机电科技发展有限公司 | Mining track and correction manufacturing method thereof |
| CN111705557A (en) * | 2020-06-30 | 2020-09-25 | 中国铁建重工集团股份有限公司 | Connecting device and connecting structure of first steel rail and second steel rail |
| CN111705556A (en) * | 2020-06-30 | 2020-09-25 | 中国铁建重工集团股份有限公司 | Method for connecting 60kg/m steel rail and 80R steel rail |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2408131Y (en) * | 2000-03-27 | 2000-11-29 | 朱锦煜 | Irregular rail |
| US6325299B1 (en) * | 2000-05-09 | 2001-12-04 | Vae Nortrak North America Inc. | Compromise rail |
| DE102004029571A1 (en) * | 2004-06-18 | 2006-01-12 | Hütker, Klaus, Dipl.-Ing. | Rail for railed traffic has additional reinforcing lugs fitted, either by bolting or welding, in the web region of an essentially I-shaped rail |
| CN102242535A (en) * | 2009-12-26 | 2011-11-16 | 周谦 | Sister rails with square hammer shaped solid railhead, curved seam short rail structure and seamless long rail function |
| CN202047325U (en) * | 2011-04-27 | 2011-11-23 | 武汉钢铁(集团)公司 | Special-shaped transition rail |
| 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 |
| CN208857603U (en) * | 2018-09-05 | 2019-05-14 | 芜湖中铁科吉富轨道有限公司 | A kind of special-shaped transition rail being connect for groove profile rail with I-rail |
-
2018
- 2018-09-05 CN CN201811030903.9A patent/CN108842525B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2408131Y (en) * | 2000-03-27 | 2000-11-29 | 朱锦煜 | Irregular rail |
| US6325299B1 (en) * | 2000-05-09 | 2001-12-04 | Vae Nortrak North America Inc. | Compromise rail |
| DE102004029571A1 (en) * | 2004-06-18 | 2006-01-12 | Hütker, Klaus, Dipl.-Ing. | Rail for railed traffic has additional reinforcing lugs fitted, either by bolting or welding, in the web region of an essentially I-shaped rail |
| CN102242535A (en) * | 2009-12-26 | 2011-11-16 | 周谦 | Sister rails with square hammer shaped solid railhead, curved seam short rail structure and seamless long rail function |
| CN202047325U (en) * | 2011-04-27 | 2011-11-23 | 武汉钢铁(集团)公司 | Special-shaped transition rail |
| 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 |
| CN208857603U (en) * | 2018-09-05 | 2019-05-14 | 芜湖中铁科吉富轨道有限公司 | A kind of special-shaped transition rail being connect for groove profile rail with I-rail |
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| CN108842525A (en) | 2018-11-20 |
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