CN208917602U - Inserted forging potassium steel combines fixed railway frog - Google Patents

Inserted forging potassium steel combines fixed railway frog Download PDF

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Publication number
CN208917602U
CN208917602U CN201820933660.9U CN201820933660U CN208917602U CN 208917602 U CN208917602 U CN 208917602U CN 201820933660 U CN201820933660 U CN 201820933660U CN 208917602 U CN208917602 U CN 208917602U
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China
Prior art keywords
rail
heart
potassium steel
fork
wing
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CN201820933660.9U
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严则会
闫旭辉
费维周
李文博
邱昌昌
高彦吉
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China Railway Baoji Bridge Group Co Ltd
China Railway Hi Tech Industry Corp Ltd
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China Railway Baoji Bridge Group Co Ltd
China Railway Hi Tech Industry Corp Ltd
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Abstract

The utility model relates to one kind can effectively improve fixed railway frog " idle space " heart rail and wing rail shock resistance, antiwear property, extend railway frog service life, heart rail and wing rail in use process Xin Gui light section area is avoided to cause whole group railway frog to be scrapped due to premature failure due to casting flaw or heart rail and wing rail unlike material etc., it can ensure that stiff frog overall stability will not lead to the inserted forging potassium steel destroyed combination fixed railway frog because of vibration again, assembled frog pitches the heart by the potassium steel with wing rail, wing rail, fork passes through high-strength bolt pair with rail and a certain number of interval irons, rail washer is assembled, the potassium steel fork heart with wing rail is integrally formed using forging potassium steel Mn13, wing rail and fork are made with rail of burning optimization on line rail;Potassium steel pitches heart heel end and uses dovetail configuration, cooperates with rail rail head side, fish tail maxilla inclined-plane, fish tail lower jaw inclined-plane with fork, and is attached by high-strength bolt pair.

Description

Inserted forging potassium steel combines fixed railway frog
Technical field
The utility model relates to one kind can effectively improve fixed railway frog " idle space " heart rail and wing rail shock resistance, resist Wear resistance extends railway frog service life, and the heart rail and wing rail in use process due to Xin Gui light section area is avoided to lack because casting Fall into or the reasons such as heart rail and wing rail unlike material premature failure and cause whole group railway frog to be scrapped, and can ensure that stiff frog is integrally steady It is qualitative to lead to the inserted forging potassium steel destroyed combination fixed railway frog because of vibration, belong to fixed railway frog manufacture neck Domain.
Background technique
CN 204491321U, title " forging potassium steel heart rail assembled frog ", have a heart rail, two forks with rail and Two wing rails, it is characterized in that: the heart rail is made of forging high manganese steel material, the fork with rail and wing rail use with it is both wired The burning optimization on line rail of road same material is made;On the two sidewalls of the web of the rail of the heart rail it is elongated be formed with two it is symmetrical Groove, and the side of groove is made to form the lower end inclined-plane I tilted to the web of the rail, boss is formed on the bottom of groove, makes cutting for the web of the rail Face shape forms an approximate wedge shape;The inner face of wedge-shaped interval iron is the inclined-plane II being bonded with inclined-plane I, and lower end surface is and boss Closely connected plane II;Described two wing rails are symmetrically positioned in the two sides of heart rail, and two wedge-shaped interval irons are symmetrically positioned in wing rail and heart rail Between, and wedge-shaped interval iron outer end face is bonded with the web of the rail sidewall shape of wing rail, the web of the rail on the inclined-plane II and heart rail of inner face Side wall inclined plane I is closely connected, and the plane II and boss of lower end surface are closely connected, by the way that high-strength bolt is secondary and rail washer is by two wing rails, two A wedge shape interval iron and heart rail are connected and fixed;Described two forks are symmetricly set on the two sides of the tail portion of heart rail with rail, and Between two wing rails, and by high-strength bolt secondary, rail washer and general interval iron by the tail portion of two wing rails and heart rail And two forks are connected and fixed with rail.Need improved be: since fork heart heart rail web of the rail section is wedge structure, it is therefore an objective to Solve the changing of the relative positions up and down of resolution rail and wing rail.But since heavy haul railway is with its high axle load, high density, super large freight volume and maintenance time Few " four big features " constitutes extremely harsh operating pressure to work business track switch equipment, and under this service condition, track switch is main The abrasion of component railway frog and hurt are far longer than common line, i.e., heavily loaded track switch is short there are the service life with railway frog, replace frequent etc. ask Topic, it is serious to restrict heavy-haul line transport capacity, and being used cooperatively for wedge-shaped heart rail and wedge shape interval iron, it cannot fundamentally solve Between combined frog crossing point rail and wing rail up and down with respect to changing of the relative positions problem because heavy haul train, when passing through track switch, vibratility can not Entire track switch is caused to be vibrated therewith with avoiding, and the vibration does not only result in the loosening of the secondary and wedge-shaped interval iron of high-strength bolt, makes The globality and stability of railway frog are destroyed, and form oscillatory shear to high-strength bolt pair, not only substantially increase rut The frequency of maintenance of fork, and shorten the service life of whole group railway frog.
CN106149482A, title " a kind of embedded combined high manganese steel frog of embedded alloy steel core rail wing rail ", insertion Formula combination high manganese steel frog is passed through by the embedded potassium steel fork heart, wing rail, fork with rail and heart rail wing rail alloy steel mosaic block high-strength High-strength bolt is secondary, rail washer and interval iron assemble, it is characterized in that: the embedded potassium steel fork heart using composite unit structure and Embedded potassium steel fork heart main body is using casting potassium steel, and wheel tread is using explosion pre-hardening;The embedded potassium steel fork heart Using monoblock cast, embedded potassium steel pitches the theoretical point of the heart to heart rail for heart rail, wing rail and interval iron assemble with fork with rail Wheel transition region between wide 60mm section is boxed frame structure, bottom closing, open-top.What is involved is assembled frogs In the inserted potassium steel fork heart use composite unit structure, inserted potassium steel fork heart main body is using casting potassium steel, wheel mistake Crossing area's heart wing rail mosaic block, more preferably alloy steel material manufactures using mechanical performance, mainly solves combination high manganese steel frog wheel mistake Fork heart mosaic block is only needed to change without whole group railway frog replacement problem after crossing area's heart wing rail premature failure.Due to inserted potassium steel Heart main body is pitched using casting potassium steel, wheel transition region heart wing rail mosaic block uses mechanical performance more preferably alloy steel material system It makes, and alloy steel material crack sensitivity is strong, impact flexibility is poor, and security performance is lower.
Summary of the invention
Purpose of design: avoiding the shortcoming in background technique, and fixed railway frog " nocuousness can be effectively improved by designing one kind Space " heart rail and wing rail shock resistance, antiwear property extend railway frog service life, avoid in use process since heart rail is small disconnected The heart rail and wing rail in face area lead to whole group railway frog report because of casting flaw or the reasons premature failure such as heart rail and wing rail unlike material It is useless, and can ensure that stiff frog overall stability will not cause the inserted forging potassium steel destroyed combination to be fixed because of vibration Type railway frog.
Design scheme: in order to realize above-mentioned purpose of design.The application is directed on the basis of background technique, is inlayed by optimization Embedded combines high manganese steel frog structure design, by the potassium steel fork heart in assembled frog using mechanical performance than casting potassium steel (ZGMn13) more preferably forging potassium steel (Mn13) production, since forging potassium steel essentially eliminates various stomatas, burning into sand, slag inclusion With the holes class defect such as shrinkage cavity and porosity, keep the shock resistance of the potassium steel fork heart and wear-resisting property more aobvious than casting potassium steel (ZGMn13) It writes and improves.Secondly, the heart wing rail of the potassium steel fork heart " idle space " realizes the same material same service life, and by pitching the heart to potassium steel Driving surface explosion pre-hardening and included wing rail front-end and back-end transition section structure carry out ride comfort optimization, make the potassium steel fork heart Service life is further extended, to improve the service life of whole group railway frog.That is, assembled frog is pitched by the potassium steel with wing rail The heart, wing rail, fork are secondary by high-strength bolt with rail and a certain number of interval irons, rail washer is assembled.Gao Meng with wing rail The steel fork heart is integrally formed using forging potassium steel (Mn13), and the wing rail and fork of assembled frog use burning optimization on line rail system with rail At.Potassium steel pitches heart driving surface using explosion Pre-hardening treatment.
1, potassium steel fork heart heel end uses dovetail configuration, oblique with rail rail head side, fish tail maxilla inclined-plane, fish tail lower jaw with pitching The design that merga pass high-strength bolt pair is attached is matched in face, is one of the technical characteristics of the utility model.The mesh designed in this way Be: pitch frictional force between heart mating surface with rail and manganese by increasing fork, improve the ability that fork resists TEMPERATURE FORCE with rail, subtract The length travel that the small manganese fork heart generates under TEMPERATURE FORCE effect prevents from causing manganese to be pitched with rail displacement is excessive because of fork on gapless track Breaking joint gap is excessive in the heart or attachment bolt cuts short influence traffic safety.Increase fork simultaneously to fill with rail and the closely connected range increase of the manganese fork heart With face, stability is enhanced.See 1-4 view, Fig. 2 in figure.
2, potassium steel fork heart wing rail front end, rear end rail head and assembled frog wing rail are cooperated using pointed formula is pasted, and fork is with rail point It holds rail head and the potassium steel fork heart using the design for hiding pointed formula cooperation, is the two of the technical characteristics of the utility model.It designs in this way Purpose be: mitigate railway frog upper track initial stage fat edges harm, improve vehicle pass through " idle space " when ride comfort, avoid height Manganese steel fork heart wing rail rear end rail head root cracks damage after wheel impacts.See Fig. 3, Fig. 4.
3, potassium steel fork heart wing rail and assembled frog wing rail (rail) are cooperated using upper and lower jaw inclined-plane, rail head side clearance Within the 1mm of middle section, leading portion and back segment it is closely connected, potassium steel pitch heart heel end and assembled frog wing rail (rail) by unique spacer iron into The design of row cooperation, is the three of the technical characteristics of the utility model.The purpose of this design is: both can avoid because of rail head side It is not closely connected, cause manganese fork heart toe-end, wing rail back segment to crack hurt harm in wheel impacts, also because greatly reducing the wing Rail rail head slicing range, wing rail tilts when railway frog being avoided to assemble, and is conducive to improve the manganese steel fork heart and wing rail fit quality.
4, the design that potassium steel fork heart heel end and wing rail use special construction interval iron to be cooperatively connected, is the utility model skill The four of art feature.The purpose of this design is: it is provided with concave groove since the application pitches heart two sides in forging potassium steel, the concave Recessed among slot, two sides protrusion is conducive to increase interval iron and manganese fork heart cooperation range, i.e., contacts interval iron with path with fork Become face contact, manganese is pitched heart heel end and is linked together under high-strength bolt effect with wing rail by interval iron, and wheel weight is pitched by manganese The heart reaches wing rail, and load is reached backing plate by wing rail, enhances structural stability.And it is matched by machining opisthocoelous slot Projective table type spacing board form gapless joint match and under the action of high-intensitive high-strength bolt pair, enhance the potassium steel fork heart The rigidity and stability of heel end, as shown in figure 1 1-3 view.
5, the potassium steel fork heart carries the design of wing rail, is the five of the technical characteristics of the utility model.The purpose designed in this way Be: the heart of wheel transition region, wing rail are wear-resistant, impact resistance is identical using same material, and it is short-term to be conducive to railway frog tyre tread It is interior to form the profile to match with wheel tread, it realizes the same service life, avoids the heart because of wheel transition region, wing rail same material different Wear-resistant shock resistance difference leads to heart rail or wing rail premature failure.
Technical solution: a kind of inserted forging potassium steel combination fixed railway frog, assembled frog is by the potassium steel with wing rail The fork heart, wing rail, fork are secondary by high-strength bolt with rail and a certain number of interval irons, rail washer is assembled, the band wing rail The potassium steel fork heart be integrally formed using forging potassium steel Mn13, wing rail and fork are made with rail of burning optimization on line rail;It is high Manganese steel pitches heart heel end and uses dovetail configuration, cooperates with rail rail head side, fish tail maxilla inclined-plane, fish tail lower jaw inclined-plane with fork, and leads to High-strength bolt pair is crossed to be attached.
Compared with the background art, first is that compared with block cast high manganese steel frog, assembled frog potassium steel pitches the heart to the utility model Heart wing rail shock resistance and wear-resisting property significantly improve, and railway frog service life is higher;Second is that compared with steel alloy assembly railway frog, Heart wing rail realizes the same material same service life, and safety is higher;Third is that increasing fitting surface, the cooperation of the upper jaw and the lower jaw arc contact is eliminated, Reduce wing rail rail head slicing range, be conducive to manufacture, improve potassium steel fork the heart and assembled frog wing rail fit quality and Efficiency avoids assembled frog wing rail from generating inclination;Fourth is that enhancing the impact resistance and antiwear property of railway frog, weight can be met Carry railway requirement;By pitching heart driving surface explosion pre-hardening and included wing rail front-end and back-end changeover portion knot to potassium steel Structure carries out ride comfort optimization, can effectively improve railway frog service life;Using wing rail and fork with the solderability of rail, nothing can satisfy Stitch line requirements.
Detailed description of the invention
Fig. 1 is inserted forging potassium steel combination stiff frog schematic diagram.
Fig. 1-1 is the A-A structural schematic diagram in Fig. 1.
Fig. 1-2 is the B-B structural schematic diagram in Fig. 1.
Fig. 1-3 is the C-C structural schematic diagram in Fig. 1.
Fig. 2 is the potassium steel fork heart and fork with rail assembling schematic diagram, and 8 be that fourchette is adopted with rail tip rail head and the potassium steel fork heart With pointed formula cooperation is hidden, 9 refer to potassium steel fork heart heel end using dovetail configuration.
Fig. 3 is forging potassium steel fork heart wing rail front end and assembled frog wing rail patch point cooperation schematic diagram, the 10 assembled frog wings Rail, 11 potassium steel pitch heart wing rail.
Fig. 3-1 be in Fig. 3 M-M to structural schematic diagram.
Fig. 4 is forging potassium steel fork heart wing rail rear end and assembled frog wing rail patch point cooperation schematic diagram.
Fig. 4-1 be in Fig. 4 N-N to structural schematic diagram.
Specific embodiment
Embodiment 1: referring to attached drawing 1 to 4-1.A kind of inserted forging potassium steel combination fixed railway frog, assembled frog by The potassium steel fork heart 1, wing rail 2, fork with wing rail pass through high-strength spiral shell with rail 3 and a certain number of first interval irons 6 and interval iron sheet 7 Bolt pair 5, rail washer 4 are assembled, and the potassium steel fork heart 1 with wing rail is integrally formed using forging potassium steel Mn13, the wing Rail 2 and fork are made with rail 3 of burning optimization on line rail;Potassium steel pitches 1 heel end of the heart and uses dovetail configuration, with fork with 3 rail head of rail Side, fish tail maxilla inclined-plane, the cooperation of fish tail lower jaw inclined-plane, and be attached by high-strength bolt pair 5.Two wing rails 2 and fork with Rail 3 is located at potassium steel fork 1 two sides of the heart and passes through high-strength bolt pair 5, the first interval iron 6 and interval iron 7 and rail washer 4 for potassium steel The fork heart is connected and fixed with wing rail, fork with rail.Potassium steel fork 2 front end of heart wing rail, rear end rail head and assembled frog wing rail are adopted With pointed formula cooperation is pasted, fork is cooperated with rail tip rail head and the potassium steel fork heart using pointed formula is hidden.Potassium steel pitches the heart 1 and wing rail Upper and lower jaw inclined-plane cooperation, within the middle section 1mm of rail head side clearance, leading portion and back segment it is closely connected, potassium steel pitch 1 heel end of the heart with combine Rail wing 2 is cooperated by unique spacer iron.
Embodiment 2: matched between potassium steel fork 1 heel end of the heart and wing rail 2 by 7 bumps of interval iron on the basis of embodiment 1 Close connection.Potassium steel fork 1 two sides of the heart are provided with concave groove, 7 one side of interval iron in boss structure and with the interval iron of boss structure 7 with The concave groove that potassium steel pitches 1 side of the heart forms gapless joint match.
It is to be understood that: although above-described embodiment contrasts detailed text to the mentality of designing of the utility model Description, but these verbal descriptions only describe the simple text of the utility model mentality of designing, rather than practical new to this It is practical new to each fall within this for the limitation of type mentality of designing, any combination, increase or modification without departing from the utility model mentality of designing In the protection scope of type.

Claims (6)

1. a kind of inserted forging potassium steel combines fixed railway frog, assembled frog pitches the heart (1), wing rail by the potassium steel with wing rail (2), fork passes through high-strength bolt secondary (5), rail washer with rail (3) and a certain number of first interval irons (6) and interval iron (7) (4) assembled, it is characterized in that: the potassium steel fork heart (1) with wing rail is integrally formed using forging potassium steel Mn13, wing rail (2) it is made with rail (3) of burning optimization on line rail with fork;Potassium steel pitches the heart (1) heel end and uses dovetail configuration, with fork with rail (3) rail head side, fish tail maxilla inclined-plane, the cooperation of fish tail lower jaw inclined-plane, and be attached by high-strength bolt secondary (5).
2. inserted forging potassium steel according to claim 1 combines fixed railway frog, it is characterized in that: two wing rails (2) With fork with rail (3) be located at the potassium steel fork heart (1) two sides by high-strength bolt pair (5), the first interval iron (6) and interval iron (7) and The potassium steel fork heart is connected and fixed with wing rail, fork with rail by rail washer (4).
3. inserted forging potassium steel according to claim 1 combines fixed railway frog, it is characterized in that: potassium steel pitches the heart wing Rail (2) front end, rear end rail head and assembled frog wing rail are cooperated using pointed formula is pasted, and fork is adopted with rail tip rail head and the potassium steel fork heart Cooperated with pointed formula is hidden.
4. inserted forging potassium steel according to claim 1 combines fixed railway frog, it is characterized in that: potassium steel pitches the heart (1) cooperate with the upper and lower jaw inclined-plane of wing rail, within the middle section 1mm of rail head side clearance, leading portion and back segment it is closely connected, potassium steel pitches the heart (1) Heel end is cooperated with assembled frog wing rail (2) by unique spacer iron.
5. inserted forging potassium steel according to claim 4 combines fixed railway frog, it is characterized in that: potassium steel pitches the heart (1) it is connect between heel end and wing rail (2) by interval iron (7) male-female engagement.
6. inserted forging potassium steel according to claim 5 combines fixed railway frog, it is characterized in that: potassium steel pitches the heart (1) two sides are provided with concave groove, and interval iron (7) pitches the heart in boss structure and with the interval iron of boss structure (7) and potassium steel on one side (1) concave groove of side forms gapless joint match.
CN201820933660.9U 2018-06-15 2018-06-15 Inserted forging potassium steel combines fixed railway frog Active CN208917602U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914719A (en) * 2018-06-15 2018-11-30 中铁宝桥集团有限公司 Inserted forging potassium steel combines fixed railway frog

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914719A (en) * 2018-06-15 2018-11-30 中铁宝桥集团有限公司 Inserted forging potassium steel combines fixed railway frog

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