CN116397465A - Embedded continuous support turnout - Google Patents
Embedded continuous support turnout Download PDFInfo
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- CN116397465A CN116397465A CN202310499710.2A CN202310499710A CN116397465A CN 116397465 A CN116397465 A CN 116397465A CN 202310499710 A CN202310499710 A CN 202310499710A CN 116397465 A CN116397465 A CN 116397465A
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- rail
- switch
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- groove
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- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 239000004567 concrete Substances 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 12
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 7
- 239000011376 self-consolidating concrete Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 12
- 239000002131 composite material Substances 0.000 description 11
- 238000003466 welding Methods 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B5/00—Rails; Guard rails; Distance-keeping means for them
- E01B5/18—Guard rails; Connecting, fastening or adjusting means therefor
-
- 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
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- 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
- E01B7/10—Frogs
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses an embedded type continuous support turnout, which comprises a rail guard mechanism, wherein the rail guard mechanism comprises a rail guard, an adjusting sheet and a plurality of support components, each support component comprises a support seat, a transverse bolt and a vertical bolt, the inner side of each support seat is positioned in a space surrounded by a rim groove, a rail waist and a rail bottom and is respectively attached to the rim groove, the rail waist and the rail bottom, the inner side of each support seat is fixedly connected with the rail waist through the transverse bolts, the outer side of each support seat is positioned at the outer side of the rim groove, the rail guard is connected with the upper end of the outer side of each support seat through the vertical bolts, a flange for limiting the rail guard to move towards one side far away from the rim groove is arranged at the upper end of the outer side of each support seat, the adjusting sheet is arranged between the rail guard and the flange, the top surface of each flange is level with the top surface of each flange, a groove is formed at the top of each flange, the groove is communicated with a countersunk hole of a countersunk waist hole, and a through groove is formed, and the upper end of each adjusting sheet extends into the through groove. The invention has reliable and stable structure, has the functions of replacing and adjusting the guard rail and is convenient to operate.
Description
Technical Field
The invention belongs to the technical field of turnout systems, and particularly relates to an embedded continuous support turnout.
Background
The turnout has the characteristics of complex structure, short service life, multiple parts, limitation of train speed and the like, and is one of the weakest links of the track. At present, domestic track turnouts are all supported in a discrete manner by fasteners, and vulnerable parts such as switch rails, frog rails and the like are greatly affected by wave milling, so that the service life of the track turnouts is short, the track turnouts are difficult to replace, and when the track turnouts are worn to a certain extent, the abrasion of wheels is aggravated when a train passes through the turnouts, and vibration and noise are more severe.
The embedded track system is characterized in that the steel rail is coated in the rail bearing groove through the polymer composite material to replace the traditional fastener, so that the embedded track system is used for continuously supporting and fixing the steel rail. In addition, in the use process, the polymer composite material also plays a role in vibration reduction and noise reduction.
However, the guard rail in the switch is an important component of the fixed frog, and is arranged at two sides of the fixed frog, which is an important component for ensuring the safety crossing of the train. At present, the guard rail is generally an integral alloy steel guard rail or a build-up welding guard rail, which is a disposable part, and the bottom of the guard rail is buried in the polymer composite material. The rail guard cannot be replaced or adjusted after being worn, the whole running state of the turnout mechanism cannot be ensured, and inconvenience is brought to maintenance of the work; after the scrapping of the guard rail occurs, the macromolecule composite material needs to be excavated for replacement, so that the maintenance cost and the maintenance difficulty are increased intangibly; in addition, the running of the train can be influenced by slight abrasion of the guard rail, so that the replacement frequency of the guard rail is higher, and the maintenance cost and the maintenance difficulty are increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing the embedded continuous support turnout which is reliable and stable in structure, has the functions of replacing and adjusting the guard rail and is convenient to operate.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an embedded type continuous support turnout comprises a concrete base, a turnout plate and a steel rail system which are sequentially arranged from bottom to top;
the top of the turnout plate is provided with a rail bearing groove, and the steel rail system is embedded in the rail bearing groove; the rail system comprises rails, frog and a switch machine, wherein the rails are respectively a straight stock rail, a curved stock rail and a straight stock rail in a switch area, and the rails in the other areas are stock rails; the heel end of the straight switch rail and the heel end of the curve switch rail are connected with the frog through a stock rail; the switch machine is fixedly arranged on a switch area, a pull rod of the switch machine is respectively connected with the curve switch rail and the straight switch rail, the curve switch rail and the straight stock rail are mutually closely attached or gradually separated under the driving action of the switch machine, and the straight switch rail and the curve stock rail are mutually closely attached or gradually separated under the driving action of the switch machine;
the inner sides of two stock rails opposite to two sides of the frog are respectively provided with a rail guard mechanism, the rail guard mechanism comprises a rail guard, an adjusting sheet and a plurality of supporting components, the rail guard is parallel to the straight stock rail, the supporting components are uniformly arranged at intervals along the longitudinal direction of the rail guard, the supporting components comprise supporting seats, transverse bolts and vertical bolts, the stock rail comprises rail heads, rail webs and rail bottoms, the inner sides of the rail heads are provided with rim grooves, the inner sides of the supporting seats are positioned in the space surrounded by the rim grooves, the rail webs and the rail bottoms and are respectively attached to the rim grooves, the rail webs and the rail bottoms, the inner sides of the supporting seats are fixed on the rail webs through the transverse bolts and nuts, limiting blocks which are propped against the side faces of the hexagon bolt heads of the transverse bolts are arranged on the rail webs, the outer side of supporting seat is located the outside in rim groove, be equipped with countersunk waist shape hole on the guardrail, countersunk waist shape hole is transverse arrangement, the outer side upper end of supporting seat is equipped with the screw hole, vertical bolt passes countersunk waist shape hole with screw hole threaded connection and with the guardrail is fixed on the supporting seat, the outer side upper end of supporting seat is equipped with and is used for restricting the guardrail is kept away from flange that rim groove one side removed, the guardrail with be equipped with the spacer between the flange, the top surface of flange with the top surface parallel and level of guardrail, the top of flange is formed with the recess, the recess with countersunk waist shape hole intercommunication and formation logical groove, the upper end of spacer stretches into in the logical groove.
As a preferable mode of the present invention, the switch board comprises a plurality of switch board units aligned in sequence along the longitudinal direction thereof; the width of the other side of the turnout plate is a curve edge with the width gradually increasing along the longitudinal direction from the wide edge to the linear edge.
As a preferable scheme of the invention, a self-compaction concrete layer is poured at the bottom of the turnout plate, and a steel bar extending into the self-compaction concrete layer is reserved at the bottom of the turnout plate; and an isolation layer is arranged on the upper surface of the concrete base.
As a preferable scheme of the self-compacting concrete layer, a limiting protrusion is arranged at the bottom of the self-compacting concrete layer, and a limiting groove matched with the limiting protrusion is arranged on the concrete base.
As a preferred embodiment of the present invention, a limit member is provided between the straight stock rail and the heel end of the curved stock rail and between the curved stock rail and the heel end of the straight stock rail, for limiting the relative displacement between the straight stock rail and the curved stock rail and between the curved stock rail and the straight stock rail.
As a preferable scheme of the invention, the limiting member is an alloy steel cavity formed by welding a 110mm thick NM400 steel plate and a 70mm thick Q345 steel plate.
As a preferable scheme of the invention, a positioning pin shaft for preventing the curved switch rail from longitudinally creeping is connected between the heel end of the curved switch rail and the corresponding limiting member, and a detachable wedge-shaped stop block capable of providing vertical pressure for the heel end is arranged on the side surface of the heel end of the curved switch rail; the side of the heel end of the straight point rail is provided with a detachable wedge-shaped stop block which can provide vertical pressure for the heel end.
As a preferable scheme of the invention, the frog is formed by welding an 80mm thick NM400 steel plate and a 100mm thick Q345 steel plate; the groove depth of the rim groove on the frog is larger than that of the stock rail connected with the frog.
As a preferred embodiment of the present invention, the tip of the curved point rail and the tip of the straight point rail are both horizontally hidden in the point structure.
As a preferable scheme of the invention, the rail bearing groove is filled with polymer castable which coats the side part and the bottom of the steel rail, and an elevation backing plate and an elastic backing plate are sequentially arranged between the bottom surface of the steel rail and the polymer castable from top to bottom.
Compared with the prior art, the embedded continuous support turnout has the beneficial effects that:
(1) According to the invention, the combined guard rail is adopted to replace an integral alloy steel guard rail or a build-up welding guard rail, the guard rail is connected with a stock rail through a supporting seat and is fastened by bolts, so that the turnout has the function of replacing the guard rail, and the guard rail can be replaced when the guard rail is seriously worn, thereby avoiding the defect that the guard rail is replaced by excavating high polymer castable in the related art, effectively reducing the maintenance difficulty of a track system and greatly reducing the maintenance cost and the maintenance difficulty;
(2) According to the invention, the flange is arranged at the upper end of the outer side part of the supporting seat, so that the guard rail can be limited to move towards one side far away from the rim groove, the effective working distance between the guard rail and the stock rail is further ensured, the guard rail is prevented from moving outwards under the compression of a train, and the structure is reliable and stable;
(3) According to the invention, the adjusting sheets are arranged between the guard rail and the flange, so that the width of the rim groove can be adjusted by installing the adjusting sheets with different thicknesses; meanwhile, as the upper end of the adjusting piece extends into the through groove, a hand-held part for taking and placing is provided for workers, and when the guard rail is adjusted, the adjusting piece can be easily taken and placed only by unscrewing the vertical bolt, so that the adjusting piece can be quickly replaced; in the process of replacing the adjusting piece, the vertical bolt is not required to be detached, the countersunk waist-shaped hole is matched with the vertical bolt, the movable guard rail is positioned by being attached to the adjusting piece, then the vertical bolt is screwed down, and the guard rail is convenient to operate and easy to realize.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic structural view of an embedded continuous support switch according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken in the direction A-A of the structure shown in FIG. 1;
FIG. 3 is an enlarged view of region D of the structure shown in FIG. 2;
FIG. 4 is a cross-sectional view taken in the direction B-B of the structure shown in FIG. 1;
FIG. 5 is a cross-sectional view taken in the direction C-C of the structure shown in FIG. 1;
fig. 6 is an enlarged view of region E in the structure shown in fig. 1.
The marks in the figure:
the concrete base 1, the limit groove 11 and the isolation layer 12;
the turnout plate 2, the reinforcing steel bar 21, the rail bearing groove 22 and the switch machine mounting groove 23;
a self-compacting concrete layer 4, a limit protrusion 41;
the device comprises a guard rail mechanism 5, a guard rail 51, an adjusting piece 52, a supporting seat 53, a transverse bolt 54, a vertical bolt 55, a countersunk kidney-shaped hole 56, a flange 57, a countersunk hole 561, a groove 571, a nut 58, a limiting block 59 and a threaded hole 510;
a limiting member 6;
the wedge-shaped stop 7 can be detached.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the invention.
As shown in fig. 1 to 6, the technical solution proposed by the preferred embodiment of the present invention is specifically as follows:
an embedded type continuous support turnout comprises a concrete base 1, a turnout plate 2 and a steel rail system 3 which are sequentially arranged from bottom to top.
The turnout plate 2 comprises a plurality of turnout plate units which are aligned in sequence along the longitudinal direction of the turnout plate, one side broadside of the turnout plate 2 is a straight line side, and the other side broadside of the turnout plate 2 is a curve side with the width gradually increasing along the longitudinal direction from the turnout plate to the straight line side.
The bottom of switch board 2 has been pour from the tight concrete layer 4, the bottom of switch board 2 is kept somewhere and is stretched into the steel bar 21 of the tight concrete layer 4 of self. The bottom of the self-compacting concrete layer 4 is provided with a limiting protrusion 41, and the concrete base 1 is provided with a limiting groove 11 matched with the limiting protrusion 41. In this way, the self-compaction concrete layer 4 is tightly combined with the turnout plate 2, the connection strength of the turnout plate 2 and the self-compaction concrete layer 4 is enhanced by the steel bars 21, a firm composite plate structure is formed, and when a train is braked emergently, the longitudinal stress born by the steel rail system 3 is converted into the friction force between the composite plate structure and the concrete base 1; meanwhile, through the cooperation of the limiting protrusion 41 and the limiting groove 11, the composite plate structure is rapidly positioned and installed on the concrete base 1, and the composite plate structure can provide opposite acting force when being subjected to longitudinal stress by the steel rail system 3.
Further, an isolating layer 12 is arranged on the upper surface of the concrete base 1, and the isolating layer 12 is preferably a geotextile isolating layer. The geotechnical cloth isolation layer 12 is arranged, so that on one hand, the composite plate structure and the concrete base 1 can be separated independently, the temperature stress of the concrete base 1 and the temperature stress of the composite plate structure are separated, the relative independence and stability of the composite plate structure are guaranteed, and meanwhile, the problem of high maintenance difficulty of the integral embedded turnout in uneven settlement of a foundation is solved through the independent separation structure; on the other hand, the vibration noise generated when the train passes the fork can be weakened.
The top of the turnout plate 2 is provided with a rail bearing groove 22, and the steel rail system 3 is embedded in the rail bearing groove 22. The rail system 3 comprises rails 31, frog 32 and a switch machine (not indicated in the figure), wherein the rails 31 are respectively a straight stock rail 311, a curved stock rail 312, a curved stock rail 313 and a straight stock rail 314 in the switch area, and the rails 31 in the rest areas are stock rails; the heel end of the straight switch rail 314 and the heel end of the curved switch rail 312 are both connected to the frog 32 by a stock rail; the switch machine is fixedly arranged on the switch machine mounting groove 23, the pull rod of the switch machine is respectively connected with the curve switch rail 312 and the straight switch rail 314, the curve switch rail 312 and the straight stock rail 311 are mutually abutted or gradually separated under the driving action of the switch machine, and the straight switch rail 314 and the curve stock rail 313 are mutually abutted or gradually separated under the driving action of the switch machine. The stock rail comprises a rail head 31a, a rail web 31b and a rail bottom 31c, and a rim groove 31d is formed in the inner side of the rail head 31 a.
The inner sides of the two stock rails opposite to the two sides of the frog 32 are respectively provided with a guard rail mechanism 5, the guard rail mechanism 5 comprises a guard rail 51, an adjusting sheet 52 and a plurality of supporting components, the guard rail 51 is parallel to the straight stock rail 311, and the supporting components are uniformly arranged at intervals along the longitudinal direction of the guard rail 51; the support assembly comprises a support seat 53, a transverse bolt 54 and a vertical bolt 55, wherein the inner side part of the support seat 53 is positioned in a space surrounded by the rim groove 31d, the rail web 31b and the rail bottom 31c and is respectively attached to the rim groove 31d, the rail web 31b and the rail bottom 31c, the inner side part of the support seat 53 is fixed on the rail web 31b through the transverse bolt 54 and the bolt 58, a limiting block 59 which is propped against the side surface of the hexagon bolt head of the transverse bolt 54 is arranged on the rail web 31b, the limiting block 59 is used for preventing the transverse bolt 54 from rotating, and the limiting block 59 can be detached from one side of the nut when detached; the outside position of supporting seat 53 is located the outside of rim groove 31d, be equipped with countersunk kidney-shaped hole 56 on the guard rail 51, countersunk kidney-shaped hole 56 is transversely arranged, the outside upper end of supporting seat 53 is equipped with screw hole 510, vertical bolt 55 pass countersunk kidney-shaped hole 56 with screw hole 510 threaded connection and with guard rail 51 is fixed on supporting seat 53, the outside upper end of supporting seat 53 is equipped with and is used for restricting guard rail 51 is kept away from rim groove 31d one side removes flange 57, guard rail 51 with be equipped with adjustment piece 52 between the flange 57, the top surface of flange 57 with the top surface parallel and level of guard rail 51, the top of flange 57 is formed with recess 571, recess 571 with countersunk kidney-shaped hole 561 intercommunication of hole 56 and form the logical groove, the upper end of adjustment piece 52 stretches into in the logical groove.
Thus, according to the design of the guard rail 51 mechanism 5 described above, there are the following advantages: firstly, the combined guard rail 51 is adopted to replace an integral alloy steel guard rail 51 or a build-up welding guard rail 51, the guard rail 51 is connected with a stock rail through a supporting seat 53 and is fastened by bolts, so that a turnout has the function of replacing the guard rail 51, the guard rail 51 can be replaced when the guard rail 51 is severely worn, the defect that the guard rail 51 is required to be replaced by excavating a high polymer castable in the related art is avoided, the maintenance difficulty of a track system can be effectively reduced, and the maintenance cost and the maintenance difficulty are greatly reduced; secondly, the flange 57 is arranged at the upper end of the outer side part of the supporting seat 53, so that the movement of the guard rail 51 to the side far away from the rim groove 31d can be limited, the effective working distance between the guard rail 51 and the stock rail is further ensured, the guard rail 51 is prevented from moving outwards under the compression of a train, and the structure is reliable and stable; thirdly, by providing the adjusting piece 52 between the guard rail 51 and the flange 57, the adjustment of the width of the rim groove 31d can be achieved by installing the adjusting piece 52 with different thickness; meanwhile, as the upper end of the adjusting piece 52 extends into the through groove, a hand-held part for taking and placing is provided for workers, and when the guard rail 51 is adjusted, the adjusting piece 52 can be easily taken and placed only by unscrewing the vertical bolt 55, so that the adjusting piece 52 can be quickly replaced; in the process of replacing the adjusting piece 52, the vertical bolt 55 is not required to be detached, the countersunk waist-shaped hole 56 is matched with the vertical bolt 55, the movable guard rail 51 is positioned against the adjusting piece 52, and then the vertical bolt 55 is screwed down, so that the adjustment of the guard rail 51 is finished, and the operation is convenient and easy to realize.
Illustratively, a stop member 6 is disposed between the straight stock rail 311 and the heel end of the curved stock rail 312 and between the curved stock rail 313 and the heel end of the straight stock rail 314, the stop member 6 being configured to limit relative displacement between the straight stock rail 311 and the curved stock rail 312 and between the curved stock rail 313 and the straight stock rail 314.
Illustratively, the spacing member 6 is an alloy steel cavity welded from 110mm thick NM400 steel plate and 70mm thick Q345 steel plate. The alloy steel cavity is triangular and connected to one side of the root end of the switch rail, and serves as a stock rail and a baffle rail, so that the switch rail which can be replaced independently can be continuously supported, the stress condition of the switch rail is improved, and the service life of the switch rail is prolonged.
Illustratively, a positioning pin is connected between the heel end of the curved switch rail 312 and its corresponding limiting member 6, the positioning pin can prevent the curved switch rail 312 from longitudinally creeping, and the curved switch rail 312 can rotate around the positioning pin to realize the position conversion of the curved switch rail 312; the side of the heel end of the curved point rail 312 is provided with a removable wedge block 7, which removable wedge block 7 is capable of providing vertical pressure to the heel end of the curved point rail 312.
Illustratively, a positioning pin is connected between the heel end of the straight point rail 314 and its corresponding limiting member 6, the positioning pin can prevent the curved point rail 312 from longitudinally creeping, and the straight point rail 314 can rotate around the positioning pin, so as to realize the position conversion of the straight point rail 314; the side of the heel end of the straight point rail 314 is provided with a removable wedge block 7, which removable wedge block 7 is capable of providing vertical pressure to the heel end of the straight point rail 314.
Illustratively, the frog 32 is welded from 80mm thick NM400 steel plate and 100mm thick Q345 steel plate; the rim grooves of the frog 32 have a groove depth greater than the groove depth of the stock rail to which they are attached. By adopting the deep groove design, compared with the shallow groove design, the defect that the speed is limited when the vehicle passes through the fork on the front line can be avoided.
Illustratively, the tip of the curved point rail 312 and the tip of the straight point rail 314 are both horizontally hidden in the point structure. The switch rail adopts a horizontal hiding design, the tip of the switch rail is naturally lowered, the safety passing of the wheels with low rim height can be ensured, and the stability is enhanced.
Illustratively, the rail bearing groove 22 is filled with a polymer casting material (not indicated in the figure) for coating the side and bottom of the rail 31, and an elevation pad and an elastic pad are sequentially arranged between the bottom surface of the rail 31 and the polymer casting material from top to bottom. According to the bottom width of the steel rail 31 and the finite element analysis calculation, in order to ensure the rigidity uniformity as much as possible, elastic backing plates with the rigidity requirement of less than or equal to 5KN/mm are adopted at the fork (namely the intersection point of two steel rails) and the switch rail, elastic backing plates with the rigidity requirement of less than or equal to 8KN/mm are adopted at the stock rail, and the rigidity requirements of the elastic backing plates at the fork and the switch rail are less than the rigidity requirements of the elastic backing plates at the stock rail. In addition, the elevation backing plate and the polymer castable are made of common tramcar materials.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. An embedded type continuous support turnout is characterized by comprising a concrete base, a turnout plate and a steel rail system which are sequentially arranged from bottom to top;
the top of the turnout plate is provided with a rail bearing groove, and the steel rail system is embedded in the rail bearing groove; the rail system comprises rails, frog and a switch machine, wherein the rails are respectively a straight stock rail, a curved stock rail and a straight stock rail in a switch area, and the rails in the other areas are stock rails; the heel end of the straight switch rail and the heel end of the curve switch rail are connected with the frog through a stock rail; the switch machine is fixedly arranged on a switch area, a pull rod of the switch machine is respectively connected with the curve switch rail and the straight switch rail, the curve switch rail and the straight stock rail are mutually closely attached or gradually separated under the driving action of the switch machine, and the straight switch rail and the curve stock rail are mutually closely attached or gradually separated under the driving action of the switch machine;
the inner sides of two stock rails opposite to two sides of the frog are respectively provided with a rail guard mechanism, the rail guard mechanism comprises a rail guard, an adjusting sheet and a plurality of supporting components, the rail guard is parallel to the straight stock rail, the supporting components are uniformly arranged at intervals along the longitudinal direction of the rail guard, the supporting components comprise supporting seats, transverse bolts and vertical bolts, the stock rail comprises rail heads, rail webs and rail bottoms, the inner sides of the rail heads are provided with rim grooves, the inner sides of the supporting seats are positioned in the space surrounded by the rim grooves, the rail webs and the rail bottoms and are respectively attached to the rim grooves, the rail webs and the rail bottoms, the inner sides of the supporting seats are fixed on the rail webs through the transverse bolts and nuts, limiting blocks which are propped against the side faces of the hexagon bolt heads of the transverse bolts are arranged on the rail webs, the outer side of supporting seat is located the outside in rim groove, be equipped with countersunk waist shape hole on the guardrail, countersunk waist shape hole is transverse arrangement, the outer side upper end of supporting seat is equipped with the screw hole, vertical bolt passes countersunk waist shape hole with screw hole threaded connection and with the guardrail is fixed on the supporting seat, the outer side upper end of supporting seat is equipped with and is used for restricting the guardrail is kept away from flange that rim groove one side removed, the guardrail with be equipped with the spacer between the flange, the top surface of flange with the top surface parallel and level of guardrail, the top of flange is formed with the recess, the recess with countersunk waist shape hole intercommunication and formation logical groove, the upper end of spacer stretches into in the logical groove.
2. The embedded continuous support switch as in claim 1, wherein said switch plate comprises a plurality of switch plate units aligned in sequence along a longitudinal direction thereof; the width of the other side of the turnout plate is a curve edge with the width gradually increasing along the longitudinal direction from the wide edge to the linear edge.
3. The embedded continuous support switch as claimed in claim 2, wherein a self-compacting concrete layer is poured at the bottom of the switch plate, and a reinforcing steel bar extending into the self-compacting concrete layer is left at the bottom of the switch plate; and an isolation layer is arranged on the upper surface of the concrete base.
4. The embedded continuous support switch as in claim 3, wherein a limit protrusion is provided on the bottom of the self-compacting concrete layer, and a limit groove matching the limit protrusion is provided on the concrete base.
5. The embedded continuous support switch as in claim 1, wherein a stop member is disposed between said straight stock rail and a heel end of said curved stock rail and between said curved stock rail and a heel end of said straight stock rail, said stop member being adapted to limit relative displacement between said straight stock rail and said curved stock rail and between said curved stock rail and said straight stock rail.
6. The embedded continuous bracing switch according to claim 5, wherein the limit member is an alloy steel cavity welded from 110mm thick NM400 steel plate and 70mm thick Q345 steel plate.
7. The embedded continuous support switch as claimed in claim 1, wherein a positioning pin for preventing the curved switch rail from longitudinally creeping is connected between the heel end of the curved switch rail and the corresponding limit member, and a detachable wedge-shaped stop block capable of providing vertical pressure to the heel end is provided on the side surface of the heel end of the curved switch rail; the side of the heel end of the straight point rail is provided with a detachable wedge-shaped stop block which can provide vertical pressure for the heel end.
8. The embedded continuous support switch as in claim 1, wherein said frog is welded from 80mm thick NM400 steel plate and 100mm thick Q345 steel plate; the groove depth of the rim groove on the frog is larger than that of the stock rail connected with the frog.
9. The embedded continuous support switch of claim 1, wherein the tip of said curved tongue and the tip of said straight tongue are both horizontally hidden in the point structure.
10. The embedded continuous support turnout according to claim 1, wherein the rail bearing groove is filled with polymer castable coating the side part and the bottom of the steel rail, and an elevation backing plate and an elastic backing plate are sequentially arranged between the bottom surface of the steel rail and the polymer castable from top to bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310499710.2A CN116397465A (en) | 2023-05-05 | 2023-05-05 | Embedded continuous support turnout |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310499710.2A CN116397465A (en) | 2023-05-05 | 2023-05-05 | Embedded continuous support turnout |
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| CN116397465A true CN116397465A (en) | 2023-07-07 |
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| CN202310499710.2A Pending CN116397465A (en) | 2023-05-05 | 2023-05-05 | Embedded continuous support turnout |
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| CN108286210A (en) * | 2018-03-16 | 2018-07-17 | 成都市新筑路桥机械股份有限公司 | A kind of rapid constructing method of embedded railway points system |
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| CN112431071A (en) * | 2020-12-01 | 2021-03-02 | 中国国家铁路集团有限公司 | Embedded track structure of high-speed railway |
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| KR20160117923A (en) * | 2015-04-01 | 2016-10-11 | 한국철도기술연구원 | Slab track structure of steel-framed reinforced concrete structure (src) for railway bridge, and construction method for the same |
| CN204738186U (en) * | 2015-06-05 | 2015-11-04 | 中铁二院工程集团有限责任公司 | A combination formula guardrail structure for modern tram switch |
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