WO2021035845A1

WO2021035845A1 - Fastener assembly for ballast track

Info

Publication number: WO2021035845A1
Application number: PCT/CN2019/107069
Authority: WO
Inventors: 肖俊恒; 张松琦; 方杭伟; 李子睿; 张欢; 李彦山; 闫子权; 张远庆; 于毫勇
Original assignee: 北京铁科首钢轨道技术股份有限公司; 中国铁道科学研究院集团有限公司铁道建筑研究所
Priority date: 2019-08-23
Filing date: 2019-09-20
Publication date: 2021-03-04
Also published as: CN210766203U

Abstract

Disclosed is a fastener assembly for a ballast track. A sleeper rail bearing groove is provided in the top of a sleeper (1); two sides of the sleeper rail bearing groove are inclined upwards and extend outwards to form retaining shoulders (13), a gauge apron (10) is arranged between a steel rail (2) and each retaining shoulder (13), one end, facing the steel rail (2), of the gauge apron (10) is simultaneously clamped to an end of a rubber tie plate (4) and an end of a heightening tie plate (6), and one end, away from the steel rail (2), of the gauge apron (10) is attached to the retaining shoulder (13); and one end of an elastic strip (7) is buckled onto an upper end face of a rail bottom (3), the other end thereof is buckled onto a working face of the gauge apron (10), one end of a screw spike (8) vertically penetrates a gap in the middle of the elastic strip (7) and is screwed onto the sleeper (1), and a flat washer (9) is located between the elastic strip (7) and a cap end of the screw spike (8) and is sheathed on the screw spike (8). The fastener assembly for the ballast track can adjust the left-right position of the steel rail, and can adjust the height of the steel rail according to different steel rail height requirements.

Description

Fastener assembly for ballasted track

Technical field

The utility model relates to a track fastener, in particular to a fastener assembly for a ballasted track.

Background technique

Fastening systems for ballasted tracks of high-speed railways around the world are generally divided into two categories, namely, bolted fastener systems and boltless fastener systems. Germany VOSSLOH W14 type, Japan type 102, and France NABLA fastener systems are all bolt fastener systems. In addition, a considerable number of countries adopt PANDROL's e series and FAST series boltless fastener systems. More than 90% of our country's lines are also laid with bolt fastener systems. The bolted fastener system is generally applied to concrete sleepers with shoulders. Its advantage is that the transverse load of the train from the rail is borne by the concrete shoulders. Residual deformation of the fastening parts causes the fastening pressure to decrease and the fastening parts can be re-tightened by re-tightening the bolts. , So as to ensure the crimping of the rails. In addition, the embedding accuracy of the embedded parts of the bolt-fastening system is relatively lower than that of the embedded parts of the non-bolt-fastening system.

For lines built on some track beds that are prone to compaction (such as in cold areas) or roadbeds and track conditions are poor, fasteners are often required to have the function of adjusting the height and left and right positions of the rail. In addition, when the track has a small height or level When the irregularities are often difficult to correct by tamping, it is more effective to correct by inserting a small-thickness height-adjusting pad. When laying seamless tracks on the bridge, the method of reducing the longitudinal resistance of the rail is often adopted to reduce the interaction force between the bridge and the rail. The fastener system is required to have the function of small resistance, and the bolt fastener system is easier to achieve these functions. Therefore, the use of bolt fastener systems in these special sections of high-speed railways has practical significance.

Shilong Bridge small resistance fasteners have been used in Shilong Bridge of Guangzhou-Shenzhen Line since the 1990s, and have been widely used on many large bridges such as Nanjing Yangtze River Bridge and Jinan Yellow River Bridge. After many years of operational practice tests, most of the line fasteners have been used with good results. The biggest problem applied to high-speed railways is that its insulation performance cannot meet the requirements of high-speed railways for track circuits. In addition, the structure of the small resistance fastener system is different from the conventional resistance fastener system, which is not conducive to field use.

Therefore, it is very necessary to provide a fastener assembly for a ballasted track with a bolt structure that can adjust the height of the rail and the left and right positions of the rail.

Utility model content

The purpose of the utility model is to provide a fastener assembly for a ballasted track. The fastener assembly for a ballasted track can adjust the left and right positions of the rail, and the position of the rail can be adjusted according to different rail position requirements.

In order to achieve the above objective, the present invention provides a fastener assembly for a ballasted track. The fastener assembly for a ballasted track includes: a rubber backing plate arranged between the bottom of the rail and the sleeper supporting rail groove, which is arranged in the ballasted track. The height-adjusting pad between the rubber pad and the sleeper rail groove; the sleeper rail groove is arranged on the top of the sleeper, and the two sides of the sleeper rail groove extend upwardly and extend outward to form a block Shoulder, a gauge baffle is arranged between the steel rail and the shoulder, the end of the gauge baffle facing the steel rail is simultaneously clamped to the end of the rubber pad and the height-adjusting pad, the One end of the gauge baffle facing away from the steel rail is attached to the inner side of the shoulder; the fastener assembly for ballasted track also includes an elastic strip, one end of which is buckled on the bottom of the rail On the end surface, the other end is buckled on the working surface of the gauge baffle, one end of the spiral spike passes vertically through the gap in the middle of the spring bar and is screwed to the sleeper, and the flat washer is located on the spring bar And the cap end of the spiral road stud and sleeved on the spiral road stud.

Preferably, one end of the gauge baffle facing the steel rail is pressed against the side of the rail bottom.

Preferably, the end of the gauge baffle facing the shoulder is provided as a support part, and the upper end of the support part extends upward to form a stop, and the stop is between the working surface of the gauge baffle A bar-shaped limiting groove recessed inward is provided at the connecting position, and one end of the elastic strip fits into the bar-shaped limiting groove.

Preferably, a support foot is provided at the bottom of one end of the gauge baffle facing the steel rail, and a support bar having the same height as the support foot is formed on the bottom of the support part, and the support foot is connected to the support bar. A buffer gap is formed between.

Preferably, a plurality of vertical first strip-shaped grooves with an opening at the bottom are provided on the end surface of one end of the supporting part which is attached to the shoulder, and the gauge baffle is provided with a spiral track. Through holes through which nails pass, a plurality of second strip-shaped grooves which are arranged perpendicular to the steel rail and extend in a horizontal direction are arranged on the lower surface of the gauge baffle.

Preferably, the bottom surface of the gauge baffle is close to one end of the rubber pad and at both ends extending in the length direction of the steel rail are respectively provided with a supporting foot, and the upper end of the supporting foot extends upward to form a convex A reinforcing rib is respectively arranged between the convex portion and the working surface of the gauge baffle, and one end of the convex portion facing the rubber pad is pressed against the side of the rail bottom.

Preferably, one end of the rubber backing plate facing the gauge baffle is provided with a first clamping slot that cooperates with the gauge baffle, and the height-adjusting backing plate faces the gauge baffle. One end is provided with a second card slot that cooperates and engages with the gauge baffle.

Preferably, the upper end surface of the rubber backing plate is provided with a plurality of third strip grooves parallel to the steel rail at equal intervals, and the lower end surface of the rubber backing plate extends along the extension direction of the steel rail. There are ears extending downward, and a plurality of fourth strip-shaped grooves parallel to the third strip-shaped groove are provided on the lower end surface of the rubber pad between the two side ears. The slot and the fourth strip slot are arranged at intervals.

Preferably, the sleeper is embedded with a screw sleeve that fits with the spiral spike, the thickness specifications of the height-adjusting pads are 1mm, 2mm, 5mm and 8mm, and the number of the height-adjusting pads is 1-2 pieces, the total height adjustment amount of the height adjustment pad is 1-10mm.

According to the above technical solution, the fastener assembly for ballasted track of the present invention includes: a rubber backing plate arranged between the rail bottom of the steel rail and the sleeper supporting rail groove, and arranged on the rubber backing plate and the sleeper supporting rail groove Between the height-adjusting pad; the sleeper rail groove is provided on the top of the sleeper, and the two sides of the sleeper rail groove extend upwardly and outwardly to form a shoulder, which is located between the rail and the shoulder A gauge baffle is provided, the end of the gauge baffle facing the steel rail is simultaneously clamped to the end of the rubber pad and the end of the height-adjusting pad, and the end of the gauge baffle faces away from the rail Fitted to the inner surface of the retaining shoulder; the ballasted track fastener assembly further includes an elastic strip, one end of the elastic strip is buckled on the upper end surface of the rail bottom, and the other end is buckled on the gauge On the working surface of the baffle, one end of the spiral spike vertically passes through the gap in the middle of the spring bar and is screwed to the sleeper, and a flat washer is located between the spring bar and the cap end of the spiral spike and sleeves Set on the spiral spike. The height adjustment of the rail can be realized by inserting the height adjustment pads of different thicknesses, and the left and right positions of the rail can be adjusted by setting gauge baffles of different widths. When the rail bed is affected by the roadbed. When the amount is offset, the height and left-right position of the rail can be quickly restored and adjusted by the above method, and the loss due to the deformation of the rail bed can be reduced in the fastest time. When the elastic bar is loose after being used for a long time, the spiral spike can be tightened so that the elastic bar can continue to keep pressing on the rail. Among them, in order to increase the insulation effect of the steel rail, the gauge baffle is made of insulating engineering plastics. In addition, the rubber backing plate also has a certain insulation effect. Therefore, the overall insulation effect of the steel rail is good.

Other features and advantages of the present invention will be described in detail in the following specific embodiments.

Description of the drawings

The accompanying drawings are used to provide a further understanding of the utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Figure 1 is an assembly schematic diagram of a preferred embodiment of a fastener assembly for a ballasted track;

Figure 2 is a schematic structural view of a preferred embodiment of the gauge baffle;

Fig. 3 is a schematic view of a top view structure of a preferred embodiment of a rubber backing plate;

4 is a schematic view of the bottom view structure of a preferred embodiment of the rubber pad;

Fig. 5 is a schematic structural view of a bottom view of a preferred embodiment of the gauge baffle;

Fig. 6 is a schematic cross-sectional view of a preferred embodiment of a sleeper;

Fig. 7 is a schematic cross-sectional view of a preferred embodiment of a spring bar.

Description of Reference Signs

1 Sleeper 2 Rail

3 track bottom 4 rubber pad

6 Raise the pad 7 bullets

8 Spiral spike 9 Flat washer

10 Gauge baffle 11 Reinforcing rib

12 Support Department 13 Shoulder

14 Buffer gap 15 through holes

16-strip limit slot 17 first-strip slot

18 The third slot 19 The first card slot

20 The fourth slot 21 edges

22 The second slot 23 feet

24 support bars 25 blocks

26 screw casing

detailed description

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

In the present utility model, if there is no explanation to the contrary, the terminology such as "up, down, left and right, front and back, inside and outside", etc., contained in the terminology only represents the orientation of the term under normal use, or is understood by those skilled in the art Common name, and should not be regarded as a restriction on the term.

Referring to the fastener assembly for ballasted track shown in Figures 1-7, the fastener assembly for ballasted track includes: a rubber pad 4 arranged between the rail bottom 3 of the steel rail 2 and the sleeper rail groove, which is arranged at the The height-adjusting pad 6 between the rubber pad 4 and the sleeper rail groove; the sleeper rail groove is arranged on the top of the sleeper 1, and the two sides of the sleeper rail groove extend upwardly and outwardly To form a stop shoulder 13, a gauge baffle 10 is provided between the steel rail 2 and the stop shoulder 13. The end of the gauge baffle 10 facing the steel rail 2 is simultaneously engaged with the rubber pad 4 and Adjust the end of the backing plate 6, the end of the gauge baffle 10 facing away from the rail 2 is attached to the inner side of the shoulder 13; the fastener assembly for ballasted track also includes a spring strip 7 , One end of the elastic strip 7 is buckled on the upper end surface of the rail bottom 3, the other end is buckled on the working surface of the gauge baffle 10, and one end of the spiral spike 8 passes through the elastic strip vertically The gap in the middle part of 7 is screwed to the sleeper 1, and a flat washer 9 is located between the elastic strip 7 and the cap end of the spiral spike 8 and is sleeved on the spiral spike 8.

Through the implementation of the above technical solution, the height adjustment of the rail 2 can be realized by inserting the height adjustment pad 6 of different thickness, and the left and right positions of the rail 2 can be realized by setting the gauge baffles 10 of different widths. Adjustment: When the rail bed is offset by a certain amount due to the roadbed, the height and left and right positions of the rail 2 can be quickly restored and adjusted by the above method, and the loss due to the deformation of the rail bed can be reduced in the fastest time. When the elastic bar 7 is loose after being used for a long time, the spiral spike 8 can be tightened so that the elastic bar 7 continues to hold the pressing effect on the steel rail 2. Among them, in order to increase the insulation effect of the steel rail 2, the gauge baffle 10 is made of insulating engineering plastics, such as glass fiber reinforced polyamide, which has excellent characteristics such as high strength and good insulation performance. In addition, the rubber pad 4 It also has a certain insulating effect. Therefore, the overall insulation effect of the steel rail 2 is good. The rubber backing plate 4 can also be replaced by a composite backing plate. It is consistent with the rubber backing plate 4 that a 1-1.3mm thick stainless steel plate is compounded on the upper surface of the rubber backing plate 4 to reduce the friction between it and the rail 2 coefficient.

In this embodiment, in order to further improve the stability of the rail 2 and prevent it from shifting left and right, and the force received by the rail 2 can be transmitted to the shoulder 13 through the gauge baffle 10, preferably, the One end of the gauge baffle 10 facing the steel rail 2 is pressed against the side of the rail bottom 3.

In this embodiment, in order to improve the stability of the elastic bar 7, prevent its sliding position from shifting, and improve the stability of the elastic bar 7 crimping. Preferably, the end of the gauge baffle 10 facing the shoulder 13 is provided as a supporting portion 12, and the upper end of the supporting portion 12 extends upward to form a stopper 25, which is connected to the gauge stopper. The connecting position between the working surfaces of the plate 10 is provided with an inwardly recessed strip limiting groove 16, and one end of the elastic strip 7 fits into the strip limiting groove 16. The strip-shaped limiting groove 16 may be one-stage or multi-stage, as long as it meets the requirement that the contact part with the elastic strip 7 can clamp the elastic strip 7 therein to limit the position.

In this embodiment, on the one hand, in order to increase the ventilation and heat dissipation effect of the bottom surface of the gauge baffle 10, on the other hand, in order to save consumables, preferably, the bottom of the gauge baffle 10 facing the rail 2 is provided with a foot 23. The bottom of the supporting portion 12 extends downward to form a supporting bar 24 having the same height as the supporting leg 23, and a buffer gap 14 is formed between the supporting leg 23 and the supporting bar 24.

In this embodiment, in order to increase the heat dissipation effect of the end surface of the supporting portion 12 attached to the end of the shoulder 13, preferably, the supporting portion 12 is provided with a plurality of The first strip-shaped groove 17 is vertical and has an opening at the bottom, the gauge baffle 10 is provided with a through hole 15 for the spiral spike 8 to pass through, and the lower surface of the gauge baffle 10 is provided with A plurality of second strip-shaped grooves 22 are arranged perpendicular to the rail 2 and extend in the horizontal direction. The arrangement of the first strip-shaped groove 17 and the second strip-shaped groove 22 makes the structure of the gauge baffle 10 more complicated. The inner walls of the first strip-shaped groove 17 and the second strip-shaped groove 22 are formed with vertical surfaces to resist The bending effect is better, and it can also save consumables.

In this embodiment, on the one hand, in order to prevent the gauge baffle 10 from being unable to compress the sides of the rail bottom 3 after the height-adjusting pad 6 is raised, on the other hand, in order to enhance the lateral pressure resistance of the gauge baffle 10, it is preferable Ground, the bottom surface of the gauge baffle 10 is close to one end of the rubber pad 4 and at both ends extending in the length direction of the rail 2 are respectively provided with a leg 23, and the upper end of the leg 23 is upward Extend to form a convex part, a reinforcing rib 11 is respectively arranged between the convex part and the working surface of the gauge baffle 10, and the end of the convex part facing the rubber pad 4 is pressed and contacted with the The side of the rail bottom 3.

In this embodiment, in order to make the rubber pad 4 and the height-adjusting pad 6 more stable, prevent them from sliding back and forth and dislocating. Preferably, one end of the rubber backing plate 4 facing the gauge baffle 10 is provided with a first clamping slot 19 that fits and engages with the gauge baffle 10, and the height-adjusting backing plate 6 faces the One end of the gauge baffle 10 is provided with a second clamping slot that cooperates and engages with the gauge baffle 10.

In this embodiment, in order to improve the seismic performance of the steel rail 2, preferably, a plurality of third strip grooves 18 parallel to the steel rail 2 are provided on the upper end surface of the rubber pad 4 at equal intervals. The lower end surface of the backing plate 4 extends downward along the two ends of the extension direction of the rail 2 to form ears 21, and the lower end surface of the rubber backing plate 4 is located between the two ears 21. The fourth strip-shaped groove 20 is parallel to the third strip-shaped groove 18, and the third strip-shaped groove 18 and the fourth strip-shaped groove 20 are spaced and staggered.

In this embodiment, in order to further improve the installation stability of the spiral spike 8, preferably, the sleeper 1 is embedded with a screw sleeve 26 that fits with the spiral spike 8, and the height-adjusting pad 6 The thickness specifications of the height-adjusting pads are 1mm, 2mm, 5mm and 8mm, and the number of the height-adjusting pads 6 is 1-2 pieces, and the total height-adjusting amount of the height-adjusting pads is 1-10mm. Since the height of the shoulder 13 is limited, the total thickness of the height-adjusting pad 6 should not be too high. Excessive height will increase the point of action of the rail 2 on the gauge baffle 10, which will easily cause the gauge baffle 10 to receive greater shearing force. The effect further affects the service life of the gauge baffle 10. The thickness of the height-adjusting pad 6 has specifications such as 1mm, 2mm, 5mm and 8mm. Under special circumstances, it is necessary to customize the height-adjusting pad 6 of specific specifications. The height-adjusting pad 6 can be combined by using one or two height-adjusting pads 6 The maximum adjustment of the board is controlled at 10mm.

The preferred embodiments of the present utility model are described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the specific details in the above-mentioned embodiments. Within the scope of the technical concept of the present utility model, various technical solutions of the present utility model can be made. These simple variants all belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model has various possibilities The combination method will not be explained separately.

In addition, various different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims

A fastener assembly for a ballasted track, characterized in that the fastener assembly for a ballasted track includes: a rubber pad (4) arranged between the rail bottom (3) of the steel rail (2) and the sleeper rail groove ), a height-adjusting pad (6) arranged between the rubber pad (4) and the sleeper rail groove;

The sleeper supporting rail groove is arranged on the top of the sleeper (1), and the two sides of the sleeper supporting rail groove extend upward obliquely to form a shoulder (13), which is located on the rail (2) and the shoulder ( 13) is provided with a gauge baffle (10), the end of the gauge baffle (10) facing the steel rail (2) is simultaneously clamped to the rubber pad (4) and the height-adjusting pad ( 6), the end of the gauge baffle (10) facing away from the steel rail (2) is attached to the shoulder (13);

The fastener assembly for ballasted track also includes an elastic strip (7), one end of the elastic strip (7) is buckled on the upper end surface of the rail bottom (3), and the other end is buckled on the gauge baffle (10) on the working surface, one end of the spiral spike (8) vertically penetrates the gap in the middle of the elastic strip (7) and is screwed to the sleeper (1), and the flat washer (9) is located on the The elastic bar (7) and the cap end of the spiral spike (8) are sleeved on the spiral spike (8).
The fastener assembly for ballasted track according to claim 1, characterized in that the end of the gauge baffle (10) facing the steel rail (2) is pressed against the side of the rail bottom (3) side.
The fastener assembly for ballasted track according to claim 2, wherein the end of the gauge baffle (10) facing the shoulder (13) is provided as a supporting portion (12), and the supporting portion The upper end of (12) extends upward to form a stopper (25), and the connecting position between the stopper (25) and the working surface of the gauge baffle (10) is provided with an inwardly recessed strip limiter A groove (16), one end of the elastic strip (7) fits into the strip-shaped limiting groove (16).
The fastener assembly for ballasted track according to claim 3, characterized in that the bottom of one end of the gauge baffle (10) facing the steel rail (2) is provided with a supporting foot (23), and the supporting part The bottom of (12) extends downward to form a support bar (24) with the same height as the support leg (23), and a buffer gap (14) is formed between the support leg (23) and the support bar (24).
The fastener assembly for ballasted track according to claim 4, characterized in that the support part (12) is attached to the end face of the one end of the retaining shoulder (13) provided with a plurality of vertical and bottom parts. The first strip groove (17) is set as an opening, the gauge baffle (10) is provided with a through hole (15) for the spiral spike (8) to pass through, the gauge baffle (10) A plurality of second strip-shaped grooves (22) which are arranged perpendicular to the rail (2) and extend in the horizontal direction are provided on the lower surface of the steel rail (2).
The fastener assembly for ballasted track according to claim 5, characterized in that the bottom surface of the gauge baffle (10) is close to one end of the rubber pad (4) and along the rail (2) The two ends extending in the length direction are respectively provided with a supporting leg (23), the upper end of the supporting leg (23) extends upward to form a convex portion, and the convex portion is connected to the working surface of the gauge baffle (10). A reinforcing rib (11) is respectively arranged therebetween, and one end of the convex portion facing the rubber pad (4) is pressed against the side of the rail bottom (3).
The fastener assembly for ballasted track according to claim 1, characterized in that, the end of the rubber pad (4) facing the gauge baffle (10) is provided with a contact with the gauge baffle (10). ) The first card slot (19) that is engaged with each other, the end of the height-adjusting backing plate (6) facing the gauge baffle (10) is provided with a card that is matched with the gauge baffle (10) Closed second card slot.
The fastener assembly for ballasted track according to claim 1, wherein a plurality of third strips parallel to the steel rail (2) are arranged on the upper end surface of the rubber pad (4) at equal intervals. Groove (18), the lower end surface of the rubber pad (4) extends downward along the two ends of the extension direction of the steel rail (2) to form ears (21), the rubber pad (4) A plurality of fourth strip-shaped grooves (20) parallel to the third strip-shaped groove (18) are provided on the lower end surface between the two side ears (21), and the third strip-shaped groove (18) ) And the fourth strip-shaped groove (20) are arranged in a staggered interval.
The fastener assembly for ballasted track according to claim 1, wherein the sleeper (1) is embedded with a screw sleeve (26) that fits with the spiral spike (8), and the adjustment The thickness specifications of the height-adjusting pad (6) are 1mm, 2mm, 5mm and 8mm, and the number of the height-adjusting pad (6) is 1-2 pieces, and the total height-adjusting amount of the height-adjusting pad is 1- 10mm.