CN115075061A - Damage-resistant fork-heel switch rail - Google Patents
Damage-resistant fork-heel switch rail Download PDFInfo
- Publication number
- CN115075061A CN115075061A CN202210629230.9A CN202210629230A CN115075061A CN 115075061 A CN115075061 A CN 115075061A CN 202210629230 A CN202210629230 A CN 202210629230A CN 115075061 A CN115075061 A CN 115075061A
- Authority
- CN
- China
- Prior art keywords
- rail
- fork
- section
- short
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
Abstract
The invention discloses a damage-resistant fork-heel switch rail, which comprises a short point rail overlapping section, a fork-heel switch rail extending section and a fork-heel switch rail overlapping section, wherein the fork-heel switch rail overlapping section is arranged at the end part of the fork-heel switch rail extending section, the short point rail overlapping section is overlapped with the fork-heel switch rail overlapping section, a slicing deepening structure is arranged on the contact surface of the short point rail overlapping section and the fork-heel switch rail overlapping section, and the contact surface of the fork-heel switch rail overlapping section and the short point rail overlapping section is provided with an abrasion-resistant reinforcing structure. The invention can obviously improve the width of the tip of the fork and the switch rail, thereby improving the strength and abrasion resistance of the switch rail, and the effect is direct and obvious. In addition, the invention can ensure that the track interruption distance is not increased, and the influence on the passing stability of the vehicle is small. The strength of the fork and the switch rail is improved, and the development rate of the damage is reduced.
Description
Technical Field
The invention relates to the field of railways, in particular to a damage-resistant fork-heel switch rail.
Background
In recent years, the wear and damage of the fork and the switch blade are obvious in the actual operation of the high-speed turnout, and the situation of multiple cracks and block falling leads to the turnout ahead of time.
It can know through on-the-spot investigation and theoretical analysis, when the train side is reverse through the switch, the wheel pastes and leans on bent thigh operation, the fork is nearer with the switch point apart from the circular curve terminal point, still exert the guide effect, lead to the fork to follow the wide little section stress below 20mm in switch point top, under train load repetitive action the fork gradually forms fat limit with switch point non-action limit top surface, little section side grinding below 20mm leads to structural strength not enough seriously, develop gradually and fall the piece even peeling off of the horizontal crackle of switch point.
In response to this problem, the problem of tip damage is currently alleviated primarily by optimizing the heel point rail reduction value. Through the pointed reduction value of increase fork and switch rail, let most pointed end weak section ratio lower, avoid with the wheel contact, when the wheel begins to contact with the switch rail with the fork, there is certain increase with the switch rail width for original structure. The main problems of this method are:
(1) the improvement effect is limited, and even no obvious improvement effect exists, the position of the wheel contacting the fork and the switch rail is still weak, and the problem of damage to the fork and the switch rail cannot be effectively avoided.
(2) The point rail reduces with the fork, and the track interrupt distance increases when can leading to the wheel to pass through to the point rail from the stub rail, and vertical structure irregularity and the transverse structure irregularity that cause also can increase, influence the stationarity that the vehicle passed through.
There is a need for a damage resistant fork and heel point rail that addresses the above-mentioned problems.
Disclosure of Invention
The invention provides a damage-resistant fork and point rail, aiming at solving the problems that in the prior art, the damage of a tip end is relieved by optimizing a fork and point rail reduction value, the improvement effect is limited, even no obvious improvement effect exists, the position of a wheel contacting with the fork and point rail is still weak, the problem of damage of the fork and point rail cannot be effectively avoided, the track interruption distance is increased when the wheel is transited from a short point rail to the fork and point rail due to the fact that the fork and point rail is reduced, the caused problems of unsmooth vertical structure and unsmooth transverse structure are increased, and the stability of passing of a vehicle is influenced.
The invention provides a damage-resistant fork and point rail, which comprises a short point rail overlapping section, a fork and point rail extending section and a fork and point rail overlapping section, wherein the fork and point rail overlapping section is arranged at the end part of the fork and point rail extending section, the short point rail overlapping section is overlapped with the fork and point rail overlapping section, a planing deepening structure is arranged on a contact surface of the short point rail overlapping section and the fork and point rail overlapping section, and a wear-resistant reinforcing structure is arranged on a contact surface of the fork and point rail overlapping section and the short point rail overlapping section.
The invention relates to a damage-resistant fork and heel switch rail, which is characterized in that as a preferred mode, a short point rail overlapping section comprises a short point rail overlapping section body, a short point rail wear-resistant matching arc, a short point rail deepening sliding section and a short point rail matching section, wherein the short point rail overlapping section body is not coaxial with a short point rail main body, and the short point rail wear-resistant matching arc, the short point rail deepening sliding section and the short point rail matching section are sequentially connected in sequence from the inward end part to the contact side of the short point rail overlapping section body and the fork and heel switch rail overlapping section to serve as contact surfaces of the fork and heel switch rail overlapping section.
According to the damage-resistant fork-heel switch rail, as a preferred mode, the short point rail wear-resistant matching circular arc is of an arc-shaped surface structure, the starting point of the short point rail wear-resistant matching circular arc is the connecting point of the short point rail lap joint section body and the short point rail main body, the tangent of the short point rail wear-resistant matching circular arc starting point is intersected with the straight edge of the inner side of the short point rail lap joint section body, and the angle between the tangent of the short point rail wear-resistant matching circular arc starting point and the normal is an acute angle.
According to the damage-resistant fork-heel switch rail, as a preferred mode, the short point rail further comprises a short point rail overlapping free section, and the short point rail overlapping free section is arranged at the end part of the short point rail matching section.
According to the damage-resistant fork-heel switch rail, as a preferred mode, the lapping section of the fork-heel switch rail comprises the tip of the fork-heel switch rail and the wear-resistant part of the fork-heel switch rail, and the wear-resistant part of the fork-heel switch rail is arranged on the side surface, contacting with the lapping part of the short switch rail, of the inner side of the tip of the fork-heel switch rail.
According to the damage-resistant fork-heel switch rail, as a preferred mode, the deepened sliding section length of the short center rail is larger than or equal to 25 mm.
According to the damage-resistant fork and heel switch rail, as an optimal mode, the thickness of the wear-resistant part of the fork and heel switch rail is 5-10 mm.
The invention has the following beneficial effects:
the invention can obviously improve the width of the tip of the fork and the switch rail, thereby improving the strength and abrasion resistance of the switch rail, and the effect is direct and obvious. In addition, the invention can ensure that the track interruption distance is not increased, and the influence on the passing stability of the vehicle is small. The strength of the fork and the switch rail is improved, and the development rate of the damage is reduced.
Drawings
FIG. 1 is a schematic view of a damage resistant fork and heel point rail;
FIG. 2 is a schematic view of a damage resistant overlapping section of the short rail of the fork and point rails;
fig. 3 is a schematic view of a damage resistant cross-point rail and fork-point rail overlap segment.
Reference numerals:
1. a short rail lap section; 11. a short rail overlapping section body; 12. the short point rail is in wear-resisting fit with the circular arc; 13. the short center rail deepens the sliding section; 14. a short rail mating section; 15. the short point rail is lapped with the free section; 2. a fork heel switch rail extension section; 3. a fork heel switch rail lap section; 31. a point of the fork heel switch rail; 32. a wear resistant portion of the fork and heel point rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in fig. 1, a sharp rail is followed to resistant fork of damage, including tongue overlap joint section 1, fork follow tongue extension section 2 and fork follow tongue overlap joint section 3, fork follow tongue overlap joint section 3 sets up in 2 tip of fork follow tongue extension section, tongue overlap joint section 1 and fork follow tongue overlap joint section 3 overlap joints, tongue overlap joint section 1 and fork follow tongue overlap joint section 3 contact surfaces are provided with the planing and cutting deepening structure, fork follow tongue overlap joint section 3 with tongue overlap joint section 1 contact surface have wear-resisting reinforcement structure.
As shown in fig. 2, the short rail overlapping section 1 includes a short rail overlapping section body 11, a short rail wear-resistant fit circular arc 12, a short rail deepening sliding section 13, a short rail fit section 14 and a short rail overlapping free section 15 that are not coaxial with the short rail main body, and the short rail wear-resistant fit circular arc 12, the short rail deepening sliding section 13 and the short rail fit section 14 are sequentially connected in sequence from the inward end portion to the contact side of the short rail overlapping body with the fork and the point rail overlapping section 3 as a contact surface with the fork and the point rail overlapping section 3. The short rail overlapping free section 15 is arranged at the end part of the short rail matching section 14.
The short point rail wear-resistant matching circular arc 12 is of an arc-shaped surface structure, the starting point of the short point rail wear-resistant matching circular arc 12 is the connecting point of the short point rail overlapping section body 11 and the short point rail main body, the tangent of the starting point of the short point rail wear-resistant matching circular arc 12 is intersected with the inner side straight edge of the short point rail overlapping section body 11, and the tangent of the starting point of the short point rail wear-resistant matching circular arc 12 and the normal angle are acute angles.
As shown in fig. 3, the fork-heel point rail overlapping section 3 includes a fork-heel point rail tip 31 and a fork-heel point rail wear-resistant portion 32, and the fork-heel point rail wear-resistant portion 32 is provided on a side surface of the inside of the fork-heel point rail tip 31 contacting the short point rail overlapping portion.
The length of the short heart rail deepened sliding section 13 is more than or equal to 25 mm. The thickness of the wear-resistant part 32 of the fork heel switch rail is 5-10 mm.
The existing fork and heel switch rail is in a vertical point hiding mode, and the point is weak. The mode that adopts the level to hide the point is planned to be considered, through transversely slicing the tongue 5mm, make the fork follow switch rail pointed end thicken 5mm, thereby realize the promotion of intensity, be favorable to reducing wearing and tearing and tired injury speed, in this scheme, the arc root of tongue planing starting point is apart from fork follow switch rail pointed end and is more than or equal to 25mm, guarantee that there is sufficient longitudinal sliding space between fork follow switch rail and the tongue, the orbit interrupt distance between tongue and fork follow switch rail keeps unanimous with the primary structure simultaneously and is less than or equal to 150mm, avoid producing the influence to driving safety.
In the embodiment, the tip of the fork and point rail is thickened by 5-10mm, so that the strength and abrasion resistance of the fork and point rail are improved. However, the thickness of the fork and point rail cannot be simply increased, and the matching relationship with the short point rail needs to be considered and the corresponding function is ensured.
First, the position of the rail cannot be changed, and in order to thicken the fork-heel rail, the rail needs to be cut to make room, as shown in fig. 2, but after the rail is cut, the longitudinal sliding between the rail and the fork-heel rail needs to be unaffected. Because a certain amount of longitudinal sliding can be generated between the short point rail and the fork and the point rail in the point rail conversion process, if the longitudinal sliding is limited, the conversion force can be increased rapidly, even the situation that the conversion cannot be carried out or the fork and the point rail are blocked occurs, and the driving safety is threatened. Therefore, after the nose rail is sliced, a sliding area of more than or equal to 25mm needs to be reserved from the root of the sliced arc to the tip of the fork and heel switch rail.
In addition, after the short point rail is planed, a rail interruption area between the short point rail and the fork point rail is generated, the rail interruption area is not suitable to be too long, otherwise, the driving safety and stability are affected, therefore, the initial position of the planed short point rail is not suitable to be too far away from the tip of the fork point rail, and the length of the rail interruption area is preferably not larger than that of the original structural scheme.
Therefore, by reasonably setting the widening amount d of the fork-heel switch rail, the planing starting position of the short point rail, the circular arc radius r of the planing starting point and the supplementary planing angle a of the tip end of the fork-heel switch rail, the length of the sliding area and the length of the rail interruption area are ensured to meet the requirements while the thickening and service life of the fork-heel switch rail are improved, and the normal matching relation and the normal function between the fork-heel switch rail and the short point rail are ensured.
Constraint relationship between parameters:
the larger the radius r of the arc, the shorter the sliding area will be.
The earlier the planing starting position of the short core rail is, the larger the sliding area is, but the longer the rail interruption area is; conversely, although the trace break is shortened, the slider is also shortened.
The smaller the supplementary slicing angle at the tip of the point rail, the smaller the sliding area, but the larger the supplementary slicing angle is, the more unfavorable the traveling safety.
The larger the widening amount of the fork and heel point rail is, although the service life of the fork and heel point rail is favorably prolonged, the more difficult the lengths of the sliding area and the track interruption area are, the more difficult the matching relation and the normal function between the short point rail and the fork and heel point rail are ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A damage resistant fork-heel switch rail, comprising: including tongue overlap joint section (1), fork with point rail extension section (2) and fork with point rail overlap joint section (3), fork with point rail overlap joint section (3) set up in fork with point rail extension section (2) tip, tongue overlap joint section (1) with fork with point rail overlap joint section (3) overlap joint, tongue overlap joint section (1) with the fork is provided with the planing and cuts the deepening structure with point rail overlap joint section (3) contact surface, the fork with point rail overlap joint section (3) with tongue overlap joint section (1) contact surface has wear-resisting additional strengthening.
2. A damage resistant fork heel point rail according to claim 1, wherein: short heart rail overlap joint section (1) include with short heart rail main part disalignment short heart rail overlap joint section body (11), the wear-resisting cooperation circular arc (12) of short heart rail, short heart rail deepen sliding section (13) and short heart rail cooperation section (14), the wear-resisting cooperation circular arc (12) of short heart rail deepen sliding section (13) with short heart rail cooperation section (14) all in proper order in the same direction as connect by inside tip setting short heart rail overlap joint body with fork with switch rail overlap joint section (3) contact side as with the contact surface of switch rail overlap joint section (3).
3. A damage resistant fork point as claimed in claim 2, wherein: the short rail wear-resistant matching circular arc (12) is of an arc-shaped surface structure, the starting point of the short rail wear-resistant matching circular arc (12) is the connecting point of the short rail overlapping section body (11) and the short rail main body, the tangent of the starting point of the short rail wear-resistant matching circular arc (12) is intersected with the inner side straight edge of the short rail overlapping section body (11), and the tangent of the starting point of the short rail wear-resistant matching circular arc (12) is acute to the normal angle.
4. A damage resistant fork heel point rail according to claim 2, wherein: the stub rail further comprises a stub rail overlapping free section (15), and the stub rail overlapping free section (15) is arranged at the end part of the stub rail matching section (14).
5. A damage resistant fork heel point rail according to claim 1, wherein: the fork-heel switch rail overlapping section (3) comprises a fork-heel switch rail tip (31) and a fork-heel switch rail wear-resistant portion (32), wherein the fork-heel switch rail wear-resistant portion (32) is arranged on the side face of the fork-heel switch rail tip (31) in contact with the inner side of the short switch rail overlapping portion.
6. A damage resistant fork heel point rail according to claim 2, wherein: the length of the deepened sliding section (13) of the short center rail is more than or equal to 25 mm.
7. A damage resistant fork heel point rail according to claim 5, wherein: the thickness of the fork heel switch rail wear-resistant part (32) is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210629230.9A CN115075061A (en) | 2022-06-01 | 2022-06-01 | Damage-resistant fork-heel switch rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210629230.9A CN115075061A (en) | 2022-06-01 | 2022-06-01 | Damage-resistant fork-heel switch rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115075061A true CN115075061A (en) | 2022-09-20 |
Family
ID=83250113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210629230.9A Pending CN115075061A (en) | 2022-06-01 | 2022-06-01 | Damage-resistant fork-heel switch rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115075061A (en) |
-
2022
- 2022-06-01 CN CN202210629230.9A patent/CN115075061A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20050115379A1 (en) | Saw chain for a power chain saw | |
| CN201330353Y (en) | Narrow gage cross-over switch device | |
| CN115075061A (en) | Damage-resistant fork-heel switch rail | |
| HRP20050076B1 (en) | Points comprising a reinforced switch tongue blade | |
| CN218756775U (en) | Fork-heel switch rail resistant to damage | |
| CN112176784B (en) | Three-way set rail turnout of single point rail | |
| US20080110316A1 (en) | Saw chain cutting link with taper | |
| CN208279949U (en) | A kind of railway switch slope climbing type tongue | |
| US9453307B2 (en) | Rail switch having a main track and a branch track | |
| RU26208U1 (en) | RAIL SURFACE PROFILE | |
| CN112941977B (en) | Single-opening turnout lateral guard rail | |
| CN201330354Y (en) | Narrow gage single-opened switch device | |
| CN201280673Y (en) | Manganese steel active heart rail assembling frog | |
| CN210561484U (en) | I-shaped transition rail | |
| CN212505638U (en) | Railway turnout switch | |
| CN210287979U (en) | Anti-jumping and adjustable fixed combined frog | |
| CN2635716Y (en) | Active switch | |
| CN208662640U (en) | A kind of milling cutter to process the aluminum profile with vibration-absorptive material | |
| CN204212011U (en) | The new profile steel-rail rail-road switch of a kind of 60N | |
| CN220612558U (en) | Cutter head for turning HRB635 high-strength steel bars | |
| CN100537896C (en) | Novel central body of frog | |
| CN109706797B (en) | Straight stock rail and turnout switch with low equivalent taper | |
| CN216237909U (en) | Single switch lateral guard rail | |
| CN203741651U (en) | Fixed acute frog wing rail | |
| CN218291452U (en) | No. 9 single turnout for subway tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |