CN218989889U

CN218989889U - Rail expansion regulator

Info

Publication number: CN218989889U
Application number: CN202223297006.9U
Authority: CN
Inventors: 蒋金洲; 刘晓丹; 令行
Original assignee: China Academy of Railway Sciences Corp Ltd CARS; Railway Engineering Research Institute of CARS
Current assignee: China Academy of Railway Sciences Corp Ltd CARS; Railway Engineering Research Institute of CARS
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-05-09
Anticipated expiration: 2032-12-08

Abstract

The utility model provides a steel rail expansion adjuster. The rail expansion and contraction adjuster includes two stock rails extending in a first direction and a support structure supporting the two stock rails, the support structure including: a plurality of first ties, two stock rails disposed on the plurality of first ties, the first ties configured to be disposed on one side of the bridge expansion joint; the first connecting pieces are used for connecting the end parts of the first sleepers, and each first connecting piece is provided with a plurality of mounting holes which are arranged corresponding to the first sleepers; the plurality of first locking pieces are correspondingly arranged with the plurality of mounting holes, each first locking piece is connected with the first sleeper after passing through the corresponding mounting hole, and at least one mounting hole in the plurality of mounting holes is a long hole extending along the first direction, so that the first sleeper is movably arranged along the first direction relative to the first connecting piece. The technical scheme of the utility model solves the problem that the sleeper of the steel rail telescopic regulator in the prior art is easy to crack due to stress concentration.

Description

Rail expansion regulator

Technical Field

The utility model relates to the technical field of railway tracks, in particular to a steel rail expansion regulator.

Background

The rail expansion regulator is composed of point rail, stock rail, rail brace fastener, elastic bar fastener, auxiliary rail, sleeper and sleeper end connector, and is a rail equipment capable of greatly reducing longitudinal interaction force of bridge and seamless line by means of longitudinal relative displacement between stock rail and point rail. Rail extension adjusters are typically provided at both ends of the bridge beam slit, with the stock rail spanning the beam slit, and the point rail remaining stationary as the bridge temperature increases or decreases, with the stock rail extending to relieve excessive temperature stresses.

When the rail expansion regulator is paved on a ballasted track, a plurality of sleepers are arranged on the ballasted track at intervals, a bridge is longitudinally expanded under the action of temperature load when in high-temperature or low-temperature weather, longitudinal acting force is generated on the sleepers paved on the rail expansion regulator, and when the rail expansion regulator is subjected to the action of temperature load, the rail is longitudinally expanded, so that the distance between the sleepers is overlarge, relative dislocation can occur between the rail and the sleepers, and when a train passes through the position, larger stress can be generated on the rail, the point rail, the sleepers, rail brace fasteners and the like, so that in order to increase the integrity of the sleepers, the sleeper is prevented from being longitudinally displaced relatively to the rail, a sleeper end connecting piece is arranged among the sleepers, so that the sleepers in the range of the regulator are connected in series to form an integral rail row, namely, a rail row locking lock is formed, the rail expansion regulator can be relatively static when the adjacent two sleepers are expanded, and the dislocation resistance of the integral rail row is improved.

In the prior art, the problem that the longitudinal relative dislocation among a plurality of sleepers forms too large a distance is avoided in the arrangement of the sleeper end connecting piece, but the stock rail of the rail expansion regulator is expanded and contracted to transmit stress to the plurality of sleepers, the plurality of sleepers cannot be displaced under the constraint of the sleeper end connecting piece, when the expansion force is continuously increased, stress concentration can occur at the bolt connection position of the sleeper end connecting piece and the sleeper, but the strength of the sleeper made of concrete is far lower than that of the bolt, long-term stress concentration can cause cracks to occur at the position of the sleeper matched with the bolt, if the treatment is not timely, the cracks further expand to cause the end part of the sleeper, the existing line sleeper is repeatedly cracked only to be subjected to the deceleration treatment, the driving safety is influenced, and the line economic benefit is reduced.

Disclosure of Invention

The utility model mainly aims to provide a steel rail expansion regulator, which solves the problem that the sleeper of the steel rail expansion regulator in the prior art is easy to crack due to stress concentration.

In order to achieve the above object, the present utility model provides a rail expansion and contraction adjuster including two stock rails extending in a first direction and a support structure supporting the two stock rails, the support structure including: the system comprises a plurality of first sleepers, a plurality of second sleepers, a plurality of first guide rails, a plurality of second guide rails and a plurality of first guide rails, wherein the first sleepers are arranged at intervals along a first direction, the two stock rails are arranged on the plurality of first sleepers, and the first sleepers are configured to be arranged at one side of a bridge expansion joint; the two first connecting pieces are respectively positioned at two sides of the two stock rails and are used for connecting the end parts of the plurality of first sleepers, and a plurality of mounting holes which are correspondingly arranged with the plurality of first sleepers are formed in each first connecting piece; the plurality of first locking pieces are correspondingly arranged with the plurality of mounting holes, each first locking piece is connected with the first sleeper after passing through the corresponding mounting hole, and at least one mounting hole in the plurality of mounting holes is a long hole extending along the first direction, so that the first sleeper is movably arranged along the first direction relative to the first connecting piece.

Further, the supporting structure further comprises a plurality of second sleepers and two second connecting pieces, wherein the second sleepers are arranged at intervals along the first direction, the second connecting pieces are used for connecting the second sleepers, the second sleepers are located on one side, away from the bridge expansion joint, of the first sleeper, and the second sleepers are used for installing two stock rails; the first connecting piece is including being connected and being the contained angle and setting up first board section and second board section, is equipped with the mounting hole on the first board section, and the second board section is connected with a second connecting piece.

Further, the first connecting piece further comprises a reinforcing rib, and two ends of the reinforcing rib are respectively connected with the first plate section and the second plate section.

Further, at least one of the first plate segment and the second plate segment has a thickness value greater than or equal to 18mm and less than or equal to 22mm.

Further, the long hole is a long round hole or an elliptical hole or a rectangular hole.

Further, the length value of the long hole in the first direction is 142mm or more and 147mm or less.

Further, a distance A between two adjacent first sleepers is 600mm + -0.5 mm, and a distance B between two adjacent mounting holes is 600mm + -0.5 mm.

Further, one of the plurality of mounting holes is a circular hole, and the rest of the plurality of mounting holes are long holes.

Further, the supporting structure further comprises a plurality of buffer gaskets which are arranged corresponding to the plurality of first locking pieces, the buffer gaskets are located between the first connecting pieces and the first sleeper, and through holes are formed in the buffer gaskets.

Further, the rail expansion and contraction adjuster includes two support structures respectively located at opposite sides of the bridge expansion joint to support the two stock rails crossing the bridge expansion joint.

By applying the technical scheme of the utility model, when the stock rail of the rail expansion regulator expands and contracts and transmits stress to a plurality of first sleepers, at least one mounting hole in the plurality of mounting holes is a long hole extending along a first direction (even if the mounting hole corresponding to the sleeper close to the bridge expansion joint is a long hole), so that the problem that part of the first sleeper cannot be displaced due to the constraint of the first connecting piece can be avoided, at least one first sleeper can generate relative dislocation with a certain range with the corresponding first locking piece and the first connecting piece in the first direction, the concentrated stress at the connecting position of the first sleeper and the first locking piece can be reduced, the problem of first cracking caused by concrete is avoided, the driving safety is further improved, and the economic benefit of a line is also improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural view of a rail extension adjuster according to an embodiment of the present utility model;

FIG. 2 shows a schematic structural view of a first connector of the rail extension adjuster of FIG. 1;

FIG. 3 shows a top view of the first connector of FIG. 2;

fig. 4 shows a front view of the first connector of fig. 2;

FIG. 5 shows a top view of a bumper of the rail extension adjuster of FIG. 1; and

fig. 6 shows a front view of the cushion pad of the rail extension adjuster of fig. 5.

Wherein the above figures include the following reference numerals:

10. a stock rail; 20. a first tie; 30. a first connector; 31. a mounting hole; 32. a first plate segment; 33. reinforcing ribs; 34. a second plate segment; 40. a first locking member; 50. a second tie; 60. a second connector; 70. and a buffer pad.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 4, an embodiment of the present utility model provides a rail extension adjuster. The rail extension adjuster includes two stock rails 10 extending in a first direction and a support structure supporting the two stock rails 10, the support structure including a plurality of first ties 20, two first tie members 30, and a plurality of first locking members 40. Wherein a plurality of first sleepers 20 are arranged at intervals along a first direction, two stock rails 10 are arranged on the plurality of first sleepers 20, and the first sleepers 20 are configured to be arranged at one side of a bridge expansion joint; the two first connecting pieces 30 are respectively positioned at two sides of the two stock rails 10, the first connecting pieces 30 are used for connecting the end parts of the plurality of first sleepers 20, and a plurality of mounting holes 31 which are correspondingly arranged with the plurality of first sleepers 20 are arranged on each first connecting piece 30; the plurality of first locking members 40 are disposed corresponding to the plurality of mounting holes 31, and each first locking member 40 is connected to the first sleeper 20 after passing through the corresponding mounting hole 31, and at least one mounting hole 31 of the plurality of mounting holes 31 is a long hole extending along the first direction, so that the first sleeper 20 is movably disposed along the first direction with respect to the first connecting member 30.

In the above technical solution, when the stock rail of the rail expansion and contraction adjuster expands and contracts and transmits stress to the plurality of first sleepers 20, at least one of the plurality of mounting holes 31 is a long hole extending along the first direction (even if the mounting hole 31 corresponding to the sleeper close to the bridge expansion and contraction joint is a long hole), so that the problem that a part of the first sleepers 20 cannot be displaced under the constraint of the first connecting piece 30 can be avoided, and the first sleepers 20 (i.e. sleepers close to the bridge expansion and contraction joint) can generate relative dislocation with the corresponding first locking piece 40 and the first connecting piece 30 in a certain range in the first direction, so that concentrated stress at the connection position of the first sleepers 20 and the first locking piece 40 can be reduced, and the problem that the first sleepers 20 made of concrete are cracked is avoided, so that driving safety is improved, and line economic benefit is also improved.

Further, a reasonable arrangement of the plurality of first ties 20 may also be ensured, with the overall stress meeting specifications.

In the embodiment of the present utility model, as shown in fig. 1, the first direction refers to the longitudinal extending direction of the stock rail 10.

Specifically, in the embodiment of the present utility model, the first retaining member 40 is a bolt and is threadedly coupled to the first tie 20.

As shown in fig. 1, in the embodiment of the present utility model, the support structure further includes a plurality of second sleepers 50 spaced apart along the first direction, and two second connectors 60 for connecting the plurality of second sleepers 50, wherein the plurality of second sleepers 50 are located on one side of the first sleeper 20 facing away from the bridge expansion joint, and the plurality of second sleepers 50 are used for installing two stock rails 10; the first connecting piece 30 comprises a first plate section 32 and a second plate section 34 which are connected and are arranged at an included angle, the first plate section 32 is provided with a mounting hole 31, and the second plate section 34 is connected with a second connecting piece 60.

Through the arrangement, the first sleeper 20 and the second sleeper 50 can be connected, so that the condition of relative movement between the first sleeper 20 and the second sleeper 50 is avoided, and the problem that the single sleeper is overloaded due to uneven train load of a basic rail can be avoided; further, by providing the second plate section 34 connected to and angled from the first plate section 32, connection to the second connector 60 is facilitated.

Preferably, in the embodiment of the present utility model, the mounting holes on the second connecting member 60 are all round holes.

Preferably, in the embodiment of the present utility model, the first connector 30 and the second connector 60 are connected by bolts.

Preferably, in an embodiment of the present utility model, the length of the first plate section 32 is greater than the length of the second plate section 34, such that the first plate section 32 may connect a plurality of first ties 20.

As shown in fig. 2 to 4, in the embodiment of the present utility model, the first connecting member 30 further includes a reinforcing rib 33, and both ends of the reinforcing rib 33 are connected to the first plate section 32 and the second plate section 34, respectively.

Through the arrangement, the connection strength between the first plate section 32 and the second plate section 34 can be increased, so that the connection stability between the first sleeper 20 and the second sleeper 50 is increased, the more stable installation of the stock rail 10 and the steel rail is ensured, and the driving safety is further improved.

Preferably, in the embodiment of the present utility model, the reinforcing ribs 33 are triangular plate segments.

Preferably, in an embodiment of the present utility model, the thickness values of the first plate section 32 and the second plate section 34 are greater than or equal to 18mm and less than or equal to 22mm. Thus, the first connecting piece 30 has certain strength, and the problem of high cost caused by excessive thickness of the first connecting piece 30 can be avoided, so that the connection stability between the first sleeper 20 and the second sleeper 50 is improved, the more stable installation of the stock rail 10 and the steel rail is ensured, and the driving safety is improved.

In the embodiment of the present utility model, as shown in fig. 2, the long hole is a oblong hole. In this way, first retaining member 40 is facilitated to move with movement of first tie 20, avoiding the problem of stress concentrations occurring on first tie 20.

In one embodiment, the elongated holes may also be elliptical holes or rectangular holes.

Preferably, in the embodiment of the present utility model, the length value of the long hole in the first direction is greater than or equal to 142mm and less than or equal to 147mm. In this way, first retaining member 40 is facilitated to move with movement of first tie 20 over a range, avoiding the problem of stress concentrations occurring on first tie 20.

As shown in fig. 1 and 3, in the embodiment of the present utility model, the interval a between the adjacent two first sleepers 20 is 600mm±0.5mm, and the interval B between the adjacent two mounting holes 31 is 600mm±0.5mm.

With the above arrangement, the interval between the adjacent two mounting holes 31 can be adapted to the interval between the adjacent two first sleepers 20, so that the first connecting piece 30 can better connect the plurality of first sleepers 20.

It should be noted that, in the embodiment of the present utility model, as shown in fig. 1, the distance a between two adjacent first sleepers 20 is the distance between the center lines of the two adjacent first sleepers 20.

In the embodiment of the present utility model, as shown in fig. 3, if the mounting holes 31 are long holes, the distance B between two adjacent mounting holes 31 refers to the distance between the center lines of the two long holes in the length direction, and if the mounting holes are round holes, the distance B between two adjacent mounting holes 31 refers to the distance between the axes of the two round holes.

As shown in fig. 3, in the embodiment of the present utility model, one mounting hole 31 of the plurality of mounting holes 31 is a circular hole, and the remaining mounting holes 31 of the plurality of mounting holes 31 are long holes.

Through the arrangement, the round hole can be used as a positioning hole, the first connecting piece 30 is fixed on one first sleeper 20, and the long hole can enable the first sleeper 20 corresponding to the long hole to move relative to the first sleeper 20 corresponding to the round hole, so that the problem that part of the first sleeper 20 cannot be displaced due to the constraint of the first connecting piece 30 is avoided, and the problem that the first sleeper 20 is cracked due to the occurrence of concentrated stress is further avoided.

Preferably, in the embodiment of the present utility model, the number of the first sleepers 20 is generally three, three mounting holes 31 are provided corresponding to the three first sleepers 20, one of the three mounting holes 31 is a circular hole, and two of the three mounting holes 31 are elongated holes.

As shown in fig. 1, 5 and 6, in the embodiment of the present utility model, the supporting structure further includes a plurality of cushion pads 70 disposed corresponding to the plurality of first locking members 40, the cushion pads 70 are located between the first connecting member 30 and the first sleeper 20, and through holes are formed in the cushion pads 70.

Through the arrangement, the first locking member 40 passes through the through holes on the first connecting member 30 and the buffer gasket 70 and then is connected with the first sleeper 20, so that the vertical buffer effect can be achieved, the pressing force of the first locking member 40 can be uniformly distributed on the first sleeper 20 within the range of the buffer gasket 70, the problem of stress concentration at the periphery of the hole of the first sleeper 20 is avoided, and the occurrence of cracks on the first sleeper 20 is further avoided.

Preferably, in an embodiment of the present utility model, the bumper pad 70 may be a circular pad or a square pad.

Specifically, in an embodiment of the present utility model, the rail expansion and contraction adjuster includes two support structures respectively located at opposite sides of the bridge expansion joint to support the two stock rails 10 crossing the bridge expansion joint. Thus, the problem that the sleepers on the two sides of the bridge expansion joint are cracked can be avoided.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: when the stock rail of the rail expansion adjuster expands and contracts and transmits stress to a plurality of first sleepers, at least one of the plurality of mounting holes is a long hole extending along a first direction (even if the mounting hole corresponding to the sleeper close to the bridge expansion joint is a long hole), so that the problem that part of the first sleepers cannot be displaced due to the constraint of the first connecting piece can be avoided, at least one first sleeper can generate relative dislocation with a certain range with the corresponding first locking piece in the first direction and the first connecting piece, and concentrated stress at the connecting position of the first sleeper and the first locking piece can be reduced, the problem that the first sleeper made of concrete is cracked is avoided, driving safety is improved, and economic benefit of a circuit is also improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A rail extension and retraction adjuster, characterized by comprising two stock rails (10) extending in a first direction and a support structure supporting two of said stock rails (10), said support structure comprising:

a plurality of first sleepers (20) arranged at intervals along the first direction, wherein two stock rails (10) are arranged on the plurality of first sleepers (20), and the first sleepers (20) are configured to be arranged at one side of a bridge expansion joint;

the two first connecting pieces (30) are respectively positioned at two sides of the two stock rails (10), the first connecting pieces (30) are used for connecting the end parts of the plurality of first sleepers (20), and a plurality of mounting holes (31) which are arranged corresponding to the plurality of first sleepers (20) are formed in each first connecting piece (30);

the plurality of first locking pieces (40) are arranged corresponding to the plurality of mounting holes (31), each first locking piece (40) penetrates through the corresponding mounting hole (31) and then is connected with the first sleeper (20), and at least one mounting hole (31) in the plurality of mounting holes (31) is a long hole extending along the first direction, so that the first sleeper (20) is movably arranged along the first direction relative to the first connecting piece (30).

2. Rail expansion and contraction regulator according to claim 1, characterized in that the supporting structure further comprises a plurality of second sleepers (50) arranged at intervals along the first direction and two second connecting pieces (60) for connecting the plurality of second sleepers (50), the plurality of second sleepers (50) being located on the side of the first sleeper (20) facing away from the bridge expansion joint, the plurality of second sleepers (50) being intended for mounting two stock rails (10);

the first connecting piece (30) comprises a first plate section (32) and a second plate section (34) which are connected and are arranged at an included angle, the first plate section (32) is provided with the mounting hole (31), and the second plate section (34) is connected with the second connecting piece (60).

3. Rail extension adjuster according to claim 2, characterized in that the first connecting piece (30) further comprises a reinforcing rib (33), both ends of the reinforcing rib (33) being connected with the first plate section (32) and the second plate section (34), respectively.

4. Rail extension adjuster according to claim 2, characterized in that at least one of the first plate section (32) and the second plate section (34) has a thickness value greater than or equal to 18mm and less than or equal to 22mm.

5. A rail extension and retraction adjuster according to any one of claims 1 to 4 wherein the elongate aperture is an oblong or elliptical aperture.

6. A rail extension and retraction adjuster according to any one of claims 1 to 4 wherein the length of the elongate aperture in the first direction is greater than or equal to 142mm and less than or equal to 147mm.

7. A rail extension and retraction adjuster according to any one of claims 1 to 4, wherein the spacing a between adjacent two of the first sleepers (20) is 600mm ± 0.5mm and the spacing B between adjacent two of the mounting holes (31) is 600mm ± 0.5mm.

8. Rail extension adjuster according to any one of claims 1 to 4, characterized in that one of the mounting holes (31) is a circular hole and the remaining mounting holes (31) of the plurality of mounting holes (31) are elongated holes.

9. Rail extension adjuster according to any one of claims 1-4, characterized in that the support structure further comprises a plurality of buffer shims (70) arranged in correspondence of a plurality of the first locking elements (40), the buffer shims (70) being located between the first connecting element (30) and the first sleeper (20), and in that the buffer shims (70) are provided with through holes.

10. Rail telescopic adjuster according to any one of claims 1-4, characterized in that it comprises two of the support structures, one on each of the opposite sides of the bridge expansion joint, for supporting two of the stock rails (10) spanning the bridge expansion joint.