CN109338823B - Railway switch tongue heel end joint structure - Google Patents
Railway switch tongue heel end joint structure Download PDFInfo
- Publication number
- CN109338823B CN109338823B CN201811373080.XA CN201811373080A CN109338823B CN 109338823 B CN109338823 B CN 109338823B CN 201811373080 A CN201811373080 A CN 201811373080A CN 109338823 B CN109338823 B CN 109338823B
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- CN
- China
- Prior art keywords
- rail
- wear
- stock
- switch
- spacer
- 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.)
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 125000006850 spacer group Chemical group 0.000 claims abstract description 47
- 229910052742 iron Inorganic materials 0.000 claims abstract description 30
- 230000003044 adaptive effect Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 9
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000008439 repair process Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 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
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
- E01B7/08—Other constructions of tongues, e.g. tilting about an axis parallel to the rail, movable tongue blocks or rails
Abstract
A railroad switch tongue heel end joint structure comprises a stock rail I, a tongue rail, a stock rail II and a backing plate, wherein the stock rail I, the tongue rail and the stock rail II are all arranged on the backing plate; the wear-resistant spacer bush is inserted into the rail web mounting hole at the heel end of the switch rail, and the common high-strength bolt pair penetrates through the steel rail gasket, the matched spacer iron, the wear-resistant spacer bush I and the clamping plate to connect and fix the switch rail I and the switch rail together; the stock rail I and the stock rail II are connected and fixed together through a common high-strength bolt pair, an outer rail brace, an adaptive spacer iron, an inner rail brace and a clamping plate; four nut seats and one shoulder are fixed on the backing plate, and the shoulder is positioned at the outer side of the nut seat at the outer side of the basic rail I; the inner rail support and the outer rail support are correspondingly screwed in the four nut seats through two pairs of bolts which are arranged from top to bottom respectively and are fixed, and the outer end face of the outer rail support is propped against the inner end face of the retaining shoulder. The invention overcomes the defects of the prior art.
Description
Technical Field
The invention belongs to the technical field of railway turnouts, and particularly relates to a railway turnout switch rail heel end joint structure.
Background
The existing railway turnout products adopt a switch rail heel end movable joint structure for the purpose of meeting the line design and site construction conditions, and most of small-number railway turnouts with the straight running speed of less than 100km/h and below are of a movable joint structure. The movable joint type switch rail heel end structure has the advantages of flexible switch rail pulling and conversion, small switch rail pulling force, arbitrary length of the switch rail and the like, and has very wide application in small-number switch products. However, the conventional structure has the following problems:
1. in the process of assembling the turnout, as the studs can only penetrate from one side of the switch rail, the installation of parts of the track heel is completed in sequence (if the turnout is disassembled, the turnout is reversely performed in sequence) according to the steps of 'interval iron, studs, track heel outer rail support, track heel clamping plates, track heel inner rail support, and vertical bolts for installing the track heel inner rail support and the outer rail support'. Because the spacer iron is often required to be matched, repaired and ground for many times in the installation process, other parts except the outer rail support are required to be disassembled for each matching and repairing of the spacer iron, so that the installation process is complicated, the labor intensity is high, and the main reason is that the stud can only penetrate from the side of the switch rail;
2. in the use process of the turnout, the replacement difficulty of the stud on the turnout laying site is high, all parts except the outer track support of the track heel part need to be disassembled before replacement, and the occupied construction time is long;
3. the shaft shoulder of the stud is easy to wear, the whole stud is easy to fail or break, and the difficulty of replacing the stud during maintenance is high;
4. the contact part of the spacing iron and the shaft shoulder of the double-end stud is easy to wear, the peripheral wear of the hole of the contact part of the spacing iron is easy to be caused to be serious, and the repair difficulty is very high;
5. the mounting bolts of the track inner rail brace and the track outer rail brace are required to be mounted from bottom to top, and in the construction process, the mounting is inconvenient due to limited operation space, and after the bolts adopt cap nuts, the bolts cannot be observed after loosening.
6. In the complex turnout form, if a movable joint structure is adopted, the installation and the withdrawal direction of the stud are limited, so that the difficulty of assembling, paving and maintaining the turnout is increased. When the heel end stud of the outer switch rail needs to be replaced due to maintenance, the inner switch rail and the stock rail assembly adjacent to the side switch rail need to be completely removed, and the field construction is increased by nearly one time.
7. When the concrete track bed is used in the form of an integral track bed, if the clear distance between the upper surface of a concrete layer and the lower surface of a backing plate is smaller than the length of a rail support mounting bolt, the bolt cannot be withdrawn, so that the rail support cannot be disassembled, and maintenance and repair are difficult at the position close to the heel end of a point rail.
Disclosure of Invention
The invention provides a railway switch tongue heel end joint structure which overcomes the defects of the prior art.
The technical scheme adopted by the invention is as follows: the structure comprises a stock rail I, a point rail, a stock rail II and a backing plate, wherein the stock rail I, the point rail and the stock rail II are all arranged on the backing plate; the wear-resistant spacer bush I is inserted into the rail web mounting hole at the front part of the heel end of the switch rail, and the common high-strength bolt pair penetrates through the steel rail gasket, the matched spacer iron, the wear-resistant spacer bush I and the clamping plate to connect and fix the switch rail I and the switch rail together; the wear-resistant spacer bush II is inserted into a rail web mounting hole at the rear part of the heel end of the switch rail, and the common high-strength bolt pair penetrates through the outer rail brace, the matched spacer iron, the wear-resistant spacer bush II, the inner rail brace and the clamping plate to connect and fix the switch rail I and the switch rail together; the stock rail I and the stock rail II are connected and fixed together through a common high-strength bolt pair, an outer rail brace, an adaptive spacer iron, an inner rail brace and a clamping plate; four nut seats and one shoulder are fixed on the backing plate, and the shoulder is positioned at the outer side of the nut seat at the outer side of the stock rail I; the inner rail support and the outer rail support are correspondingly screwed in the four nut seats through two pairs of bolts which are arranged from top to bottom respectively and are fixed, and the outer end face of the outer rail support abuts against the inner end face of the retaining shoulder.
And flat gaskets are arranged between the spacing iron and the wear-resistant spacer II and between the spacing iron and the wear-resistant spacer I, and are sleeved on the common high-strength bolt pair and are positioned in shoulders of the end faces of the spacing iron.
The length of the wear-resistant spacer II is smaller than that of the wear-resistant spacer I.
An adjusting gasket is arranged between the outer rail brace and the shoulder; the outer rail support and the upper end face of the shoulder are provided with pinch plates, anti-loosening washers are arranged between the bolts and the outer rail support and between the bolts and the inner rail support, the inner ends of the pinch plates are located below the anti-loosening washers, and the pinch plates are tightly pressed through the bolts, so that the pinch plates are tightly abutted against the upper ends of the adjusting gaskets.
The nut seat and the retaining shoulder are welded on the upper end face of the base plate, and a through hole with the diameter larger than the nominal diameter of the internal thread of the nut seat is formed in the base plate below the nut seat.
Compared with the prior art, the invention has the following beneficial effects:
1. the common high-strength bolt and sleeve is adopted to replace the original stud structure, and the bolt penetrating direction of the movable joint at the heel end of the switch rail can be set at will according to the overall structure requirement;
2. forming a shoulder by forming a groove at the contact part of the spacer iron and the sleeve, and installing a flat gasket in the groove to prevent the contact part of the sleeve and the spacer iron from wearing;
3. the structure form of the inner rail brace and the outer rail brace and the bolt fixing mode are improved, so that the rail brace mounting bolts are mounted from top to bottom;
4. the shoulder is welded on the outer side of the outer rail brace in advance, and installation and adjustment are carried out by arranging the adjusting sheet, so that a mode of carrying out on-site welding on the shoulder after the rail brace is installed in the traditional process is eliminated, and the on-site construction difficulty is reduced;
5. and anti-loosening gaskets are arranged on the vertical mounting bolts of the inner rail brace and the outer rail brace, and the installation of the rail brace is mechanically anti-loosening.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a sectional view B-B of FIG. 1;
FIG. 4 is a cross-sectional view of C-C of FIG. 1;
fig. 5 is a cross-sectional view of a prior art structure.
Detailed Description
The invention will be described in detail with reference to fig. 1-5 and the detailed description.
The track switch tongue heel end joint structure comprises a stock rail I1, a tongue rail 2, a stock rail II 3 and a backing plate 4, wherein the stock rail I1, the tongue rail 2 and the stock rail II 3 are all arranged on the backing plate 4; the wear-resistant spacer bush I8 is inserted into a rail web mounting hole at the front part of the heel end of the switch rail 2, and the common high-strength bolt pair 5 penetrates through a steel rail gasket 17, an adaptive spacer iron 16, the wear-resistant spacer bush I8 and a clamping plate 18 to connect and fix the switch rail I1 and the switch rail 2 together; the wear-resistant spacer II 6 is inserted into a rail web mounting hole at the rear part of the heel end of the switch rail 2, and the common high-strength bolt pair 5 penetrates through the outer rail support 14, the matched spacer iron 16, the wear-resistant spacer II 6, the inner rail support 7 and the clamping plate 18 to connect and fix the stock rail I1 and the switch rail 2 together; the stock rail I1 and the stock rail II 3 are fixedly connected together through a common high-strength bolt pair 5, an outer rail support 14, an adaptive spacer iron 16, an inner rail support 7 and a clamping plate 18; four nut seats 9 and one blocking shoulder 12 are fixed on the backing plate 4, and the blocking shoulder 12 is positioned at the outer side of the nut seat 9 at the outer side of the stock rail I1; the inner rail support 7 and the outer rail support 14 are correspondingly screwed in the four nut seats 9 through two pairs of bolts 13 which are arranged from top to bottom respectively, and the outer end face of the outer rail support 14 is propped against the inner end face of the retaining shoulder 12.
The nut seat 9 and the stop shoulder 12 are welded on the upper end face of the backing plate 4, and a through hole 4-1 with the diameter larger than the nominal diameter of the internal thread of the nut seat is formed in the backing plate 4 below the nut seat 9. And flat washers 15 are arranged between the spacing iron 16 and the wear-resistant spacer II 6 and between the spacing iron 16 and the wear-resistant spacer I8, and the flat washers 15 are sleeved on the common high-strength bolt pair 5 and are positioned in shoulders on the end faces of the spacing iron 16. The length of the wear-resistant spacer II 6 is smaller than that of the wear-resistant spacer I8.
An adjusting gasket 10 is arranged between the outer rail support 14 and the shoulder 12; the upper end surfaces of the outer rail support 14 and the shoulder 12 are provided with a buckle plate 11, lock washers are arranged between the bolt 13 and the outer rail support 14 and between the bolt 13 and the inner rail support 7, the inner end of the buckle plate 11 is positioned below the lock washers, and the buckle plate 11 is tightly pressed through the bolt 13, so that the buckle plate 11 is tightly abutted against the upper end of the adjusting gasket 10.
The high-strength bolt pair can be withdrawn from the stock rail to the stock rail in a penetrating manner, or withdrawn from the stock rail to the stock rail in a penetrating manner, and can change the direction according to the requirement of assembly and maintenance of the last track of a later turnout, so that the high-strength bolt pair is not limited; in addition, because the switch rail is required to be wrenched and converted according to the opening direction of the switch during the use process of the switch, the length of the wear-resistant sleeve arranged at the rail web of the switch rail is required to meet the requirement of the movement range of the rail web of the switch rail in the two limit states of being wrenched and closely attached with the stock rail; the point rail with the movable joint at the heel end is usually provided with two high-strength bolt pairs and a wear-resistant sleeve, and the length of the wear-resistant sleeve close to the tip end side of the point rail is larger than that of the wear-resistant sleeve far away from the tip end side of the point rail under the influence of the swing range of the point rail. In the process of pulling and converting, the switch rail swings by taking the rail web center line at the position of the last wear-resistant sleeve at the heel end of the switch rail as a rotation center, and in the process, two sides of the wear-resistant sleeve are respectively propped against a flat washer and a clamping plate at the other side of the spacer iron all the time, so that the requirement of swing of the switch rail is met, and the service life of each part and the stability of the whole structure are ensured.
The wear-resistant sleeve is arranged in the mounting hole of the rail web of the point rail, the mounting hole is slightly larger than the outer diameter of the wear-resistant sleeve, and after the high-strength bolt connecting pair arranged in the horizontal direction of the heel end of the point rail is screwed up, the interval size of each part at the heel end of the point rail can be effectively maintained, and meanwhile, the flexible pulling conversion of the point rail can be ensured; after abrasion, only the sleeve needs to be replaced, no zero replacement bolt is needed, and replacement of spare parts is simple and convenient. The spacer iron is provided with a flat washer at the contact part with the wear-resistant sleeve, so that the spacer iron can not be repaired or the repair construction amount is greatly increased after the sleeve is directly worn.
The switch rail side and the stock rail side are respectively provided with an inner rail brace and an outer rail brace, and considering that the switch rail is a vulnerable part of a railway switch, in order to meet maintenance or rapid installation and replacement requirements of a construction site, vertical installation bolts of the inner rail brace and the outer rail brace sequentially penetrate through the rail brace and a backing plate from top to bottom, are screwed into screw bases welded on the backing plate and then are screwed, and the tail ends of the bolts are provided with locking pieces so as to prevent the bolts from being loosened and then withdrawn. The mounting bolts of the inner rail brace and the outer rail brace of the existing structure are required to be mounted from bottom to top, and in the construction process, due to the fact that the operation space is limited, the mounting is inconvenient, and the defects that after the bolts adopt cap nuts, the bolts cannot be observed after loosening are overcome. The problems that when the turnout adopts the form of an integral ballast bed, if the clear distance between the upper surface of a concrete layer and the lower surface of a backing plate is smaller than the length of a rail brace mounting bolt, the rail brace cannot be disassembled due to the fact that the bolt cannot be withdrawn, and maintenance and repair are difficult at the position close to the heel end of the switch rail are also solved. An adjusting gasket is arranged between the outer rail support and the shoulder, the shoulder is welded on the backing plate in advance, and the integral position adjustment of the switch rail and the stock rail assembly can be realized by adding or reducing the adjusting gasket.
The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention, so that all equivalent modifications made by the appended claims shall be included in the scope of the present invention.
Claims (5)
1. A railway switch tongue heel end joint structure which is characterized in that: the structure comprises a stock rail I (1), a point rail (2), a stock rail II (3) and a backing plate (4), wherein the stock rail I (1), the point rail (2) and the stock rail II (3) are all arranged on the backing plate (4); the wear-resistant spacer bush I (8) is inserted into a rail web mounting hole at the front part of the heel end of the switch rail (2), and the common high-strength bolt pair (5) penetrates through a steel rail gasket (17), an adaptive spacer iron (16), the wear-resistant spacer bush I (8) and a clamping plate (18) to connect and fix the base rail I (1) and the switch rail (2) together; the wear-resistant spacer sleeve II (6) is inserted into a rail web mounting hole at the rear part of the heel end of the switch rail (2), and the common high-strength bolt pair (5) penetrates through the outer rail support (14), the matched spacer iron (16), the wear-resistant spacer sleeve II (6), the inner rail support (7) and the clamping plate (18) to connect and fix the stock rail I (1) and the switch rail (2) together; the stock rail I (1) and the stock rail II (3) are connected and fixed together through a common high-strength bolt pair (5), an outer rail support (14), an adaptive spacer iron (16), an inner rail support (7) and a clamping plate (18); four nut seats (9) and one retaining shoulder (12) are fixed on the base plate (4), and the retaining shoulder (12) is positioned at the outer side of the nut seat (9) at the outer side of the stock rail I (1); the inner rail support (7) and the outer rail support (14) are correspondingly screwed in the four nut seats (9) through two pairs of bolts (13) which are arranged from top to bottom respectively, and the outer end face of the outer rail support (14) is propped against the inner end face of the retaining shoulder (12).
2. A railroad switch tongue heel end fitting structure as set forth in claim 1, wherein: a flat washer (15) is arranged between the spacer iron (16) and the wear-resistant spacer bush II (6) and between the spacer iron (16) and the wear-resistant spacer bush I (8), and the flat washer (15) is sleeved on the common high-strength bolt pair (5) and is positioned in a shoulder on the end face of the spacer iron (16).
3. A railway switch tongue heel end joint construction according to claim 1 or 2, wherein: the length of the wear-resistant spacer II (6) is smaller than that of the wear-resistant spacer I (8).
4. A railroad switch tongue heel end fitting structure as set forth in claim 3, wherein: an adjusting gasket (10) is arranged between the outer rail support (14) and the retaining shoulder (12); the outer rail support (14) and the upper end face of the retaining shoulder (12) are provided with a buckle plate (11), a lock washer is arranged between the bolt (13) and the outer rail support (14) and between the bolt (13) and the inner rail support (7), the inner end of the buckle plate (11) is positioned below the lock washer, and the buckle plate (11) is tightly pressed through the bolt (13), so that the buckle plate (11) is tightly abutted to the upper end of the adjusting gasket (10).
5. A railroad switch tongue heel end fitting structure as set forth in claim 4, wherein: the nut seat (9) and the retaining shoulder (12) are welded on the upper end face of the base plate (4), and a through hole (4-1) with the diameter larger than the nominal diameter of the internal thread of the nut seat is formed in the base plate (4) below the nut seat (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373080.XA CN109338823B (en) | 2018-11-19 | 2018-11-19 | Railway switch tongue heel end joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373080.XA CN109338823B (en) | 2018-11-19 | 2018-11-19 | Railway switch tongue heel end joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109338823A CN109338823A (en) | 2019-02-15 |
| CN109338823B true CN109338823B (en) | 2023-12-29 |
Family
ID=65316212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811373080.XA Active CN109338823B (en) | 2018-11-19 | 2018-11-19 | Railway switch tongue heel end joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109338823B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243326B (en) * | 2019-05-27 | 2024-04-30 | 北京全路通信信号研究设计院集团有限公司 | Device and method for detecting insufficient displacement of railway switch tongue |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2180674Y (en) * | 1993-12-10 | 1994-10-26 | 哈铁分局阿城工务段经济技术开发公司 | Adjustable rail support |
| AT1448U1 (en) * | 1996-06-05 | 1997-05-26 | Voest Alpine Stahl | DEVICE FOR LIFTING A TONGUE RAIL OF A SWITCH |
| CN201459531U (en) * | 2009-08-05 | 2010-05-12 | 宝鸡中铁宝桥天元实业发展有限公司 | Switch heel with adjustable outer rail brace |
| CN204849493U (en) * | 2015-07-21 | 2015-12-09 | 宝鸡中铁宝桥天元实业发展有限公司 | Rut is with buckle |
| CN107805980A (en) * | 2017-12-26 | 2018-03-16 | 中铁宝桥集团有限公司 | A kind of railway switch is with slope climbing type tongue and its with end structure |
| CN209128816U (en) * | 2018-11-19 | 2019-07-19 | 中铁宝桥集团有限公司 | A kind of railway switch heel of switch rail joint structure |
-
2018
- 2018-11-19 CN CN201811373080.XA patent/CN109338823B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2180674Y (en) * | 1993-12-10 | 1994-10-26 | 哈铁分局阿城工务段经济技术开发公司 | Adjustable rail support |
| AT1448U1 (en) * | 1996-06-05 | 1997-05-26 | Voest Alpine Stahl | DEVICE FOR LIFTING A TONGUE RAIL OF A SWITCH |
| CN201459531U (en) * | 2009-08-05 | 2010-05-12 | 宝鸡中铁宝桥天元实业发展有限公司 | Switch heel with adjustable outer rail brace |
| CN204849493U (en) * | 2015-07-21 | 2015-12-09 | 宝鸡中铁宝桥天元实业发展有限公司 | Rut is with buckle |
| CN107805980A (en) * | 2017-12-26 | 2018-03-16 | 中铁宝桥集团有限公司 | A kind of railway switch is with slope climbing type tongue and its with end structure |
| CN209128816U (en) * | 2018-11-19 | 2019-07-19 | 中铁宝桥集团有限公司 | A kind of railway switch heel of switch rail joint structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109338823A (en) | 2019-02-15 |
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