CN110258194B - I-shaped rail asymmetric welding type three-way switch alloy steel fork core - Google Patents
I-shaped rail asymmetric welding type three-way switch alloy steel fork core Download PDFInfo
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- CN110258194B CN110258194B CN201910547252.9A CN201910547252A CN110258194B CN 110258194 B CN110258194 B CN 110258194B CN 201910547252 A CN201910547252 A CN 201910547252A CN 110258194 B CN110258194 B CN 110258194B
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- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 15
- 238000005493 welding type Methods 0.000 title claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 47
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 6
- 238000005266 casting Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Abstract
The invention discloses an I-shaped rail asymmetric welding type three-split turnout alloy steel fork core, which comprises a fork core block, wherein a fork core rim groove is formed in the fork core block, the fork core rail comprises a linear rim groove, a curve rim groove I and a curve rim groove II, the three-split turnout is of an asymmetric structure, the front end of the curve rim groove II and the front end of the curve rim groove I are positioned on the same side of the linear rim groove, the curve rim groove II and the curve rim groove I are intersected at the front part of the fork core block to form a first fork core part, and the curve rim groove I and the linear rim groove are intersected at the rear part of the fork core block to form a second fork core part. The three-split turnout fork can be flexibly arranged according to the actual situation, has the advantages of good wear resistance, long service life, high machining precision and the like, and simultaneously omits the high cost of developing a casting die.
Description
Technical Field
The invention belongs to the field of rails, and particularly relates to an I-shaped rail asymmetric welding type three-way switch alloy steel fork core.
Background
In the field of rails, switches are a type of connection device that transfers vehicles from one track to another, often laid in large numbers in parking lots of vehicles, vehicle sections. The three-way switch is a relatively complex switch structure form and has the unique characteristic of being capable of opening three directions. When the turnouts are arranged in a marshalling station and a freight yard, due to the limitation of topography, insufficient space is available for laying a plurality of groups of single turnouts to meet the requirements, and the superiority of the three turnouts is highlighted. At present, most of domestic marshalling stations and freight yards are paved with symmetrical three turnouts, the fork points are integrally cast by high manganese steel, the arrangement form is single, the flexibility is poor, and the practical requirements cannot be effectively met. In the prior art, although asymmetric three-way turnout is adopted, the fork center is made of alloy steel. As the combined type frog core has more parts, diseases are more prominent, the combined type alloy steel frog has poorer integrity, and the daily maintenance work is heavier.
Disclosure of Invention
The invention aims to provide an alloy steel fork core of an I-shaped rail asymmetric welding type three-way turnout so as to solve the problems that in the prior art, the integrity of the asymmetric three-way turnout is poor, daily maintenance work is heavy, and components are more and easy to fail.
The I-shaped rail asymmetric welding type three-split turnout alloy steel fork core comprises a fork core block, wherein a fork core rim groove is formed in the fork core block, the fork core rail comprises a linear rim groove, a curve rim groove I and a curve rim groove II, the three-split turnout is of an asymmetric structure, the curve rim groove II and the front end of the curve rim groove I are located on the same side of the linear rim groove, the curve rim groove II and the curve rim groove I are intersected with each other to form a first fork core part in the front of the fork core block, and the curve rim groove I and the linear rim groove are intersected with each other to form a second fork core part in the rear of the fork core block.
Preferably, the fork core rim groove sequentially comprises a first transition section, a second transition section and a fork core avoiding section from the end part to the fork core tip, the width of the first transition section gradually decreases from the end part to the direction of the second transition section, the second transition section gradually decreases towards the direction of the fork core avoiding section, and the fork core avoiding section gradually increases towards the direction of the fork core tip until the fork core tip.
Preferably, the inner side surface, close to the fork center, of the first transition section and the second transition section is consistent with the extending direction of the track, the inner side surface, far away from the fork center, of the first transition section and the second transition section is inclined to reduce the width of the rim groove, and the inner side surface, close to the fork center, of the fork center avoiding section is inclined to increase the width of the rim groove.
Preferably, the width of the end part of the fork core rim groove is 85mm, the width of the groove of the first transition section is gradually reduced to 70mm, the width of the groove of the second transition section is gradually reduced to 46mm, the width of the groove of the fork core avoiding section is gradually increased to 48mm, and the width of the end face of the tip end of the fork core is 6mm.
Preferably, the length of the first transition section is 150mm, the length of the fork center avoiding section is 200mm, and the part between the two sections belongs to the second transition section.
Preferably, a first notch is formed in the front portion of one side of the fork core block, a second notch is formed in the rear portion of the other side of the fork core block, the front end of the linear rim groove extends to the end face of the first notch, and the rear end of the curved rim groove extends to the end face of the second notch.
Preferably, two ends of the fork core block are welded with a first curved I-shaped rail extending along the first curved rim groove, two ends of the fork core block and two end faces of the notch are welded with a second curved I-shaped rail extending along the second curved rim groove, and two ends of the notch and the rear end of the fork core block are welded with a straight I-shaped rail extending along the straight rim groove.
Preferably, the fork core block comprises an upper layer structure and a lower layer structure, the linear rim groove, the first curved rim groove and the second curved rim groove are formed in the upper layer structure, the upper layer structure is an NM400 steel plate, the lower layer structure is a Q345 steel plate, and the upper layer structure is welded and fixed on the lower layer structure.
Preferably, a fork opening is formed in the front end of the fork block, the fork opening is a center communicated with the first fork part, wing rails are arranged on two sides of the fork opening, and a fork tip is not arranged in the center.
The invention has the following advantages:
1. The fork center is of an integral structure, daily maintenance work is very simple, faults are not easy to occur, the three-way switch fork center can be flexibly arranged according to actual conditions, the wear resistance is good, the service life is long, the machining precision is high, the high cost of developing a casting die is saved, the installation and maintenance are very convenient due to the fact that components are very few, and the probability of faults of the parts is reduced.
2. In the scheme, the groove widths of the first transition section and the second transition section in each rim groove are continuously reduced, so that the shaking of wheels is reduced, the stable contact between the wing rail and the wheels is ensured, and the train runs more stably at the fork center. The fork center avoiding section can prevent the wheel from being bumped when entering.
3. The fork core block is welded by NM400 and Q345, and then the fork core block and the I-shaped rail are welded together. The integral is better, the processing precision is higher, and steel with lower price can be mostly adopted in the material, so that the cost is reduced, and the later build-up welding maintenance is more convenient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a three-way switch employing the present invention;
FIG. 3 is a partial block diagram of the fork hub rim channel from end to fork hub tip in the configuration of FIG. 1.
The reference numerals in the figures are: 1. a fork core block 2, a linear rim groove 3, a curve rim groove I, a curve rim groove II, a linear I-shaped rail 5, a curve I-shaped rail 6 and a curve I-shaped rail I, and 7, a curve I-shaped rail II, 8, a first transition section, 9, a second transition section, 10, a fork center avoiding section, 11, a fork center tip end, 12 and a fork center opening.
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.
Example 1:
As shown in fig. 1-3, the invention provides an i-shaped rail asymmetric welding type three-split switch alloy steel fork core, which comprises a fork core block 1, wherein a fork core wheel rim groove is formed on the fork core block 1, the fork core rail comprises a linear wheel rim groove 2, a curve wheel rim groove I3 and a curve wheel rim groove II 4, the three-split switch is of an asymmetric structure, the front end of the curve wheel rim groove II and the front end of the curve wheel rim groove I3 are positioned on the same side of the linear wheel rim groove 2, the curve wheel rim groove II 4 and the curve wheel rim groove I3 are intersected at the front part of the fork core block 1 to form a first fork core part, and the curve wheel rim groove I3 and the linear wheel rim groove 2 are intersected at the rear part of the fork core block 1 to form a second fork core part. The structure can be applied to the fork points of various asymmetric three-way turnout switches, has good integrity, has only one fork point block in the number of components, has higher strength and is easy to maintain.
The fork core rim groove sequentially comprises a first transition section 8, a second transition section 9 and a fork core avoiding section 10 from the end part to the fork core tip end 11, the width of the first transition section 8 gradually decreases from the end part to the direction of the second transition section 9, the direction of the second transition section 9 gradually decreases towards the direction of the fork core avoiding section 10, and the direction of the fork core avoiding section 10 gradually increases towards the direction of the fork core tip end 11 until the fork core tip end 11.
The inner side faces, close to the fork centers, of the first transition sections 8 and the second transition sections 9 are consistent with the extending direction of the track, the inner side faces, far away from the fork centers, of the first transition sections 8 and the second transition sections 9 are inclined to reduce the width of the rim groove, and the inner side faces, close to the fork centers, of the fork center avoiding sections 10 are inclined to increase the width of the rim groove. The inner side surface of the fork core rim groove far away from the fork core is a working edge, the constraint on the wheel rim can be increased by reducing the groove width of the fork core rim groove through the inclination of the side surface, the transverse running range of the wheel is reduced, and the problem that the wheel transversely runs and collides with the fork core tip 11 is prevented to a certain extent. The fork core avoiding section 10 prevents the wheel rim from colliding with the fork core tip 11 by reducing the end face width of the fork core tip 11.
The width of the end part of the fork core rim groove is 85mm, the width of the groove of the first transition section 8 is gradually reduced to 70mm, the width of the groove of the second transition section 9 is gradually reduced to 46mm, the width of the groove of the fork core avoiding section 10 is gradually increased to 48mm, and the width of the end face of the fork core tip 11 is 6mm. The length of the first transition section 8 is 150mm, the length of the fork center avoiding section 10 is 200mm, and the part between the two sections belongs to the second transition section 9. Wherein the slope and shape of the first transition 8 corresponds to the shape of the corresponding guard rail transition here, ensuring symmetry of the two sides working edge, and the slope and shape of the second transition corresponds to the shape of the guard rail here. Therefore, the fork center rim groove structure and the guard rail are matched to prevent the wheels from large deflection, so that the movement track of the wheels is effectively restrained, and the wheels safely pass through the harmful space.
The front part of one side of the fork core block 1 is provided with a first notch, the rear part of the other side of the fork core block is provided with a second notch, the front end of the linear rim groove 2 extends to the end face of the first notch, and the rear end of the curved rim groove 4 extends to the end face of the second notch. The arrangement of the notch reduces the steel consumption of the fork core block 1, the end faces of the notch I and the notch II are perpendicular to the corresponding fork core rim grooves, and the corresponding I-shaped rail can be conveniently subjected to positioning welding of the corresponding end parts.
The two ends of the fork core block 1 are welded with a first curved I-shaped rail 6 extending along the first curved rim groove 3, the front end of the fork core block 1 and the two end faces of the notch are welded with a second curved I-shaped rail 7 extending along the second curved rim groove 4, and the two end faces of the notch and the rear end of the fork core block 1 are welded with a straight I-shaped rail 5 extending along the straight rim groove 2.
The fork core block 1 comprises an upper layer structure and a lower layer structure, wherein the linear rim groove 2, the first curved rim groove 3 and the second curved rim groove 4 are formed in the upper layer structure, the upper layer structure is an NM400 steel plate, the lower layer structure is a Q345 steel plate, and the upper layer structure is welded and fixed on the lower layer structure.
The front end of the fork core block 1 is provided with a fork core opening 12, the fork core opening 12 is the center communicated with the first fork core part, the two sides of the fork core opening 12 are wing rails, and the center is not provided with a core rail. Because the front ends of the fork core blocks 1 are welded with the switch rail parts, the train enters the fork core opening 12 after turning at the switch rail, and the guiding effect on the wheels cannot be improved without arranging the fork core tip 11, but the wheels are prevented from colliding with the switch rail at the fork core opening.
The principle and the processing process of the invention are that firstly, the NM400 steel plate is machined, corresponding linear rim grooves 2, curve rim grooves I3 and curve rim grooves II 4 are milled on the NM400 steel plate, and then the NM400 steel plate is welded to the Q345 steel plate serving as a bottom base layer by adopting high-strength wear-resistant welding flux. And then the fork center block is moved to a three-way turnout site and laid at a set position, and then the first curved I-shaped rail 6 is welded to the positions, away from the fork center, of the two ends of the first curved flange groove 3 respectively, so that smooth transition connection of the working edges is realized. The second curved I-shaped rail 7 is welded to the two ends of the second curved flange groove 4 in the same manner, and the straight I-shaped rail 5 is welded to the two ends of the straight flange groove 2.
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 inventive concept and technical solutions are adopted, all within the scope of the invention.
Claims (6)
1. An I-shaped rail asymmetric welding type three-way switch alloy steel fork core which is characterized in that: the novel fork comprises a fork center block (1), wherein a fork center rim groove is formed in the fork center block (1), the fork center rim groove comprises a linear rim groove (2), a curve rim groove I (3) and a curve rim groove II (4), the three-way switch is of an asymmetric structure, the curve rim groove II (4) and the front end of the curve rim groove I (3) are positioned on the same side of the linear rim groove (2), the curve rim groove II (4) and the curve rim groove I (3) are intersected at the front part of the fork center block (1) to form a first fork center part, and the curve rim groove I (3) and the linear rim groove (2) are intersected at the rear part of the fork center block (1) to form a second fork center part;
The fork core rim groove sequentially comprises a first transition section (8), a second transition section (9) and a fork core avoiding section (10) from the end part to the fork core tip end (11), the width of the first transition section (8) gradually decreases from the end part to the second transition section (9), the width of the second transition section (9) gradually decreases to the fork core avoiding section (10), and the width of the fork core avoiding section (10) gradually increases to the fork core tip end (11) until the fork core tip end (11);
The inner side surfaces of the first transition section (8) and the second transition section (9) close to the fork center are consistent with the extending direction of the track, the inner side surfaces of the first transition section (8) and the second transition section (9) far away from the fork center are inclined to the side of the fork center to reduce the width of the rim groove, and the inner side surfaces of the fork center avoidance section (10) close to the fork center are inclined to the side of the fork center to increase the width of the rim groove;
The front part of one side of the fork core block (1) is provided with a first notch, the rear part of the other side of the fork core block is provided with a second notch, the front end of the linear rim groove (2) extends to the end face of the first notch, and the rear end of the curved rim groove (4) extends to the end face of the second notch.
2. An i-rail asymmetrically welded triple switch alloy steel fork according to claim 1, wherein: the width of the end part of the fork core rim groove is 85mm, the width of the groove of the first transition section (8) is gradually reduced to 70mm, the width of the groove of the second transition section (9) is gradually reduced to 46mm, the width of the groove of the fork core avoiding section (10) is gradually increased to 48mm, and the end face width of the fork core tip (11) is 6mm.
3. An i-rail asymmetrically welded triple switch alloy steel fork according to claim 2, wherein: the length of the first transition section (8) is 150mm, the length of the fork center avoiding section (10) is 200mm, and the part between the two sections belongs to the second transition section (9).
4. An i-rail asymmetrically welded triple switch alloy steel fork according to claim 1, wherein: the two ends of the fork core block (1) are welded with a first curved I-shaped rail (6) extending along the first curved rim groove (3), the front end of the fork core block (1) and the two end faces of the notch are welded with a second curved I-shaped rail (7) extending along the second curved rim groove (4), and the rear end of the fork core block (1) and the one end face of the notch are welded with a straight I-shaped rail (5) extending along the straight rim groove (2).
5. An i-rail asymmetrically welded triple switch alloy steel fork according to claim 1, wherein: the fork core block (1) comprises an upper layer structure and a lower layer structure, wherein the linear rim groove (2), the first curved rim groove (3) and the second curved rim groove (4) are formed in the upper layer structure, the upper layer structure is an NM400 steel plate, the lower layer structure is a Q345 steel plate, and the upper layer structure is welded and fixed on the lower layer structure.
6. An i-rail asymmetrically welded triple switch alloy steel fork according to claim 1, wherein: the front end of the fork core block (1) is provided with a fork core opening (12), the fork core opening (12) is communicated with the center of the first fork core part, and wing rails are arranged on two sides of the fork core opening (12) and the center is free of a core rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547252.9A CN110258194B (en) | 2019-06-24 | I-shaped rail asymmetric welding type three-way switch alloy steel fork core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547252.9A CN110258194B (en) | 2019-06-24 | I-shaped rail asymmetric welding type three-way switch alloy steel fork core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110258194A CN110258194A (en) | 2019-09-20 |
| CN110258194B true CN110258194B (en) | 2024-07-12 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669121A (en) * | 2013-12-31 | 2014-03-26 | 中铁山桥集团有限公司 | Double-throat fixed type acute frog |
| CN106012700A (en) * | 2016-07-12 | 2016-10-12 | 芜湖中铁科吉富轨道有限公司 | Track switch frog structure and welding process thereof |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669121A (en) * | 2013-12-31 | 2014-03-26 | 中铁山桥集团有限公司 | Double-throat fixed type acute frog |
| CN106012700A (en) * | 2016-07-12 | 2016-10-12 | 芜湖中铁科吉富轨道有限公司 | Track switch frog structure and welding process thereof |
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