CN202187255U - Turn-back railroad switch - Google Patents
Turn-back railroad switch Download PDFInfo
- Publication number
- CN202187255U CN202187255U CN2011202540966U CN201120254096U CN202187255U CN 202187255 U CN202187255 U CN 202187255U CN 2011202540966 U CN2011202540966 U CN 2011202540966U CN 201120254096 U CN201120254096 U CN 201120254096U CN 202187255 U CN202187255 U CN 202187255U
- Authority
- CN
- China
- Prior art keywords
- track switch
- turning back
- turn
- rail
- track
- 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.)
- Expired - Lifetime
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model relates to the technical field of railroad rail, and in particular relates to a turn-back railroad switch. The turn-back railway switch comprises a railroad switch front section consisting of tongue rails and a railroad switch rear section consisting of inner rails, wherein the railroad switch rear section is in the form of a lead curve; and the lead curve is a separate complex curve with the radius from 350m to 200m. The turn-back railroad switch using the linear type can effectively protect the tongue rails and can overcome the defects that the tongue rails of the turn-back railroad switch in the prior art are severely worn and the tongue rails are damaged. The turn-back railroad switch is used for an urban rail traffic turn-back line for improving the service life, so that the shortest service life is stabilized to be about 2 years, and the longest service life target is 2.5 years.
Description
Technical field
The utility model relates to the railroad track technical field, particularly relates to a kind of track switch of turning back.
Background technology
Domestic subway main track generally adopts No. 9 track switches of 60kg/m rail, and using more at present is the linear pattern tongue, secondly is tangent type or hemisection line style tongue.Straight tongue abrasion resistance is better, only establishes 1 towing point, have to make advantages such as simple, that cost is lower, but have also that comfort level is poor relatively slightly, side direction allows that switch crossing speed is lower and can't realize deficiency such as trans-section seamless railway; Tangent type or hemisection line style tongue can well overcome above-mentioned defective, and adopting radius of lead curve usually like track switch in the prior art is the mutually release curved switch of 200m.The track switch but existing domestic city track traffic is turned back, the general employing and the interval identical track switch of main track.This track switch is identical with the interval frequency of utilization through train of main track through the frequency of utilization of train, must change tongue continually thereby highdensity train operation causes tongue hurt or abrasion to transfinite easily, increases maintenance work greatly.In short 3-6 month of application life, what the life-span was long also has only about 1-1.5.Increased raw material and cost of labor greatly, the track switch of turning back simultaneously is not because the tongue hurt is in time safeguarded the driving unsafe factor that exists.
The utility model content
The technical problem that (one) will solve
The technical problem that the utility model will solve provides a kind of track switch of turning back, and overcomes the tongue serious wear of the track switch of turning back that exists in the prior art and the defective of tongue hurt.
(2) technical scheme
In order to solve the problems of the technologies described above; The utility model provides a kind of track switch of turning back; The said track switch of turning back comprises track switch leading portion of being made up of tongue and the track switch back segment of being made up of interior rail, and said track switch back segment is the lead curve type, and said lead curve is the mutually release compound curve of radius 350m-200m.
As preferably, the length of the track switch leading portion of the said track switch of turning back is greater than 13.839m.
As preferably, the track switch back segment of the said track switch of turning back also comprises the abrasionproof guard rail, the parallel inboard that is positioned at said rail of said abrasionproof guard rail.
As preferably, rail is provided with superelevation in the lead curve of the said track switch of the turning back part.
As preferably, said in the scope of rail lead curve position superelevation be smaller or equal to 6mm.
As preferably, the bottom of said abrasionproof guard rail also is lined with interior track plate.
(3) beneficial effect
A kind of track switch of turning back that technique scheme provided, the said track switch of turning back comprise track switch leading portion of being made up of tongue and the track switch back segment of being made up of interior rail, and said track switch back segment is the lead curve type, and said lead curve is the mutually release compound curve of radius 350m-200m.Adopt the track switch of turning back of this line style effectively to protect tongue, overcome the tongue serious wear of the track switch of turning back that exists in the prior art and the defective of tongue hurt.
Description of drawings
Fig. 1 is the structural representation of the track switch of turning back of the utility model embodiment;
Wherein, 1: tongue; 2: the abrasionproof guard rail; 3: the track switch back segment; 4: the track switch leading portion; 5: the lead curve starting point; 6: the lead curve terminal point; 7: interior rail.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
As shown in Figure 1, be the structural representation of the track switch of turning back of present embodiment.This track switch of turning back comprises track switch leading portion of being made up of tongue 14 and the track switch back segment of being made up of interior rail 73, and track switch back segment 3 is the lead curve type, and this lead curve is the mutually release compound curve of radius 350m-200m.Track shown in figure between lead curve starting point 5 and the lead curve terminal point 6 is that the track line style that the track switch back segment has adopted is the mutually release compound curve of radius 350m-200m, in the time of can slowing down train operation through track switch to the wearing and tearing of tongue.After being used for the track switch back segment of track switch of turning back of urban track traffic through the mutually release compound curve that adopts the utility model and provide; Compare track line style of the prior art; With the application life of effectively improving tongue; Can be stabilized in the shortest application life about 2 years, long life target can reach 2.5 years.
Turn back the length of track switch leading portion 4 of track switch greater than 13.839m.The track switch leading portion of available technology adopting is 13.839m, and the utility model can make it cooperate with track switch back segment 3 through the length of lengthening track switch leading portion 4, and further buffering is to the wearing and tearing of tongue.
The track switch back segment 4 of track switch of turning back in the utility model also comprises abrasionproof guard rail 2, and abrasionproof guard rail 2 is positioned at the inboard of rail 7.Abrasionproof guard rail 2 laterally arranges with interior rail 7, through adding the protection that abrasionproof guard rail 2 can well play internal rail 7, reduces train wheel through track switch back segment 4 time because the radian of lead curve produces that internal rail 7 pressure of centrifugal force are strengthened to its wearing and tearing that cause.
Rail is provided with superelevation in the lead curve part of track switch of turning back.The size of superelevation only surpasses in reverse high usefulness as overcoming, and in the actual design superelevation, superelevation is no more than 6mm, and the scope of interior rail lead curve position superelevation is smaller or equal to 6mm in the present embodiment.
The bottom of abrasionproof guard rail 2 also is lined with interior track plate (not shown).Be lined with interior track plate through bottom, increase the rolling circle radius of abrasionproof guard rail 2, interior rail 7 and train wheel tread contact point, can prolong the application life of track switch widely, reduce on-the-spot maintenance workload at abrasionproof guard rail 2.
Can find out by above embodiment; The utility model embodiment comprises track switch leading portion of being made up of tongue 14 and the track switch back segment of being made up of interior rail 73 through the employing track switch of turning back; Track switch back segment 3 is the lead curve type, and this lead curve is the mutually release compound curve of radius 350m-200m.Adopt the track switch of turning back of this line style effectively to protect tongue, overcome the tongue serious wear of the track switch of turning back that exists in the prior art and the defective of tongue hurt.The utility model product is used for the urban track traffic line of turning back, and will effectively improve its application life, is stabilized in the shortest application life about 2 years, and long life target is 2.5 years.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and replacement, these improvement and replacement also should be regarded as the protection domain of the utility model.
Claims (6)
1. the track switch of turning back is characterized in that, the said track switch of turning back comprises track switch leading portion of being made up of tongue and the track switch back segment of being made up of interior rail, and said track switch back segment is the lead curve type, and said lead curve is the mutually release compound curve of radius 350m-200m.
2. the track switch of turning back as claimed in claim 1 is characterized in that, the length of the track switch leading portion of the said track switch of turning back is greater than 13.839m.
3. the track switch of turning back as claimed in claim 1 is characterized in that, the track switch back segment of the said track switch of turning back also comprises the abrasionproof guard rail, the parallel inboard that is positioned at said rail of said abrasionproof guard rail.
4. the track switch of turning back as claimed in claim 3 is characterized in that, rail is provided with superelevation in the lead curve part of the said track switch of turning back.
5. the track switch of turning back as claimed in claim 4 is characterized in that, the scope of said interior rail lead curve position superelevation is smaller or equal to 6mm.
6. the track switch of turning back as claimed in claim 3 is characterized in that the bottom of said abrasionproof guard rail also is lined with interior track plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202540966U CN202187255U (en) | 2011-07-18 | 2011-07-18 | Turn-back railroad switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202540966U CN202187255U (en) | 2011-07-18 | 2011-07-18 | Turn-back railroad switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202187255U true CN202187255U (en) | 2012-04-11 |
Family
ID=45918716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202540966U Expired - Lifetime CN202187255U (en) | 2011-07-18 | 2011-07-18 | Turn-back railroad switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202187255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195689A (en) * | 2020-09-03 | 2021-01-08 | 石家庄铁道大学 | Three-line set rail railway shared rail edge changing device for rapid train passing |
-
2011
- 2011-07-18 CN CN2011202540966U patent/CN202187255U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195689A (en) * | 2020-09-03 | 2021-01-08 | 石家庄铁道大学 | Three-line set rail railway shared rail edge changing device for rapid train passing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |
|
| CX01 | Expiry of patent term |