WO2021035846A1

WO2021035846A1 - Fastener assembly with sleeper retaining shoulder used in ballastless track

Info

Publication number: WO2021035846A1
Application number: PCT/CN2019/107092
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: CN211057514U

Abstract

Disclosed is a fastener assembly with a sleeper retaining shoulder used in a ballastless track, the fastener assembly comprising an under-rail tie plate (15), an iron tie plate (8), an under-iron-plate tie plate (9), and a first height adjusting tie plate (3) and a second height adjusting tie plate (4) that are detachably arranged. 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 sleeper retaining shoulders (2), two ends of the second height adjusting tie plate (4) rise upwards and form first extending parts (24) that are parallel to each other and are attached to inner side faces of the sleeper retaining shoulders (2), and two ends of the first height adjusting tie plate (3) rise upwards and form second extending parts (21) that are parallel to each other and are attached to inner side faces of the first extending parts (24); a gauge apron (7) is arranged between each second extending part (21) and the iron tie plate (8); insulating blocks (10) are buckled onto an upper surface and side faces of a rail bottom (17); one end of an elastic strip (11) is buckled onto the top face of the insulating block (10), and the other end thereof is buckled onto a working face of the gauge apron plate (7); and one end of a screw spike (12) downwardly penetrates, in a vertical manner, a gap in the middle of the elastic strip (11), the iron tie plate (8), the under-iron-plate tie plate (9), the first height adjusting tie plate (3) and the second height adjusting tie plate (4) in sequence and is then in threaded connection with the sleeper (1); and a flat washer (13) is located between the elastic strip (11) and a cap end of the screw spike (12) and is sheathed on the screw spike (12). The fastener assembly can be used for adjusting the gauge of a steel rail and the height position thereof, and has a good insulation effect.

Description

Fastener assembly with sleeper shoulder in ballastless track

Technical field

The utility model relates to a fastener assembly with a sleeper shoulder used in a ballastless track.

Background technique

Track fasteners are a common component of railway tracks. It is well known that in order to improve the comfort of train operations, ballastless tracks can only rely on track fasteners to provide elasticity. Therefore, ballastless track fasteners should be more effective than ballasted track fastener systems. Good elasticity, but the elasticity cannot be increased indefinitely, otherwise it will cause the rail to overturn when the train passes, which will significantly increase the dynamic gauge and affect the smooth running of the train. If the rigidity of the existing track fasteners is reduced and the elasticity is increased, the rails will roll over and affect the safe operation of the train.

In addition, according to the requirements of the track circuit, the fastener system not only has good insulation performance under dry conditions, but also should have good insulation performance under heavy rainfall. This requires that the fastener system has a higher insulation performance in the structure. The metal gauge baffle used in the existing shoulder rail fasteners and the spring bars directly buckle the rail, which greatly reduces the insulation performance of the rail fastener.

In addition, due to the complex geography, geology and climate environment in my country, local sections of the ballastless track may encounter some special conditions during the operation of the ballastless track, such as post-construction settlement of the roadbed, creep and arching of concrete long-span bridges, settlement and deformation of tunnel foundations. Diseases such as low-temperature frost heave, resulting in irregularities in the structure of the ballastless track. Because the ballastless track cannot be started, the rapid adjustment of the height and left and right positions of the rail can only be solved by fasteners. In order to restore the smoothness of the line in a short time and ensure the safety and comfort of train operation, it is urgent It is necessary to increase the rail height and left and right position adjustments on the basis of the existing fastener system of the existing high-speed railway.

Therefore, the present application provides a fastener assembly for a ballastless track with sleeper shoulders in consideration of comfort, safety, insulation, and adjustable rail spacing and rail height positions.

Utility model content

The purpose of the utility model is to provide a fastener assembly with a sleeper shoulder in a ballastless track. The fastener assembly can be used to adjust the gauge, adjust the height of the steel rail and have a good insulation effect.

In order to achieve the above objective, the present invention provides a fastener assembly for a ballastless track with sleeper shoulders. The fastener assembly includes: a top-down installation on the bottom surface of the rail and the sleeper-supporting groove The under-rail pad, the iron pad, the iron-plate lower pad and the detachable first height-adjusting pad and the second height-adjusting pad between the upper surfaces; the sleeper supporting rail groove is arranged on the top of the sleeper, In addition, the two sides of the sleeper-supporting groove extend upwardly and obliquely to form sleeper shoulders, and both ends of the second height-adjusting pad rise up and form inner sides that are parallel and fit to the sleeper shoulders. The first extension part of the first height-adjusting pad is raised up and formed with a second extension part that is parallel and fits the inner surface of the first extension part; the second extension part and the iron pad A gauge baffle is arranged between the plates, and the inner and outer sides of the gauge baffle are respectively pressed against the side of the iron pad and the inner side of the second extension, and are located on the bottom of the rail. An insulating block is fastened on the surface and the side surface. One end of the elastic strip is fastened on the top surface of the insulation block, and the other end is fastened on the working surface of the gauge baffle; one end of the spiral spike is passed vertically downward in sequence After passing through the gap in the middle of the spring bar, the iron backing plate, the lower backing plate of the iron plate, the first height-adjusting backing plate and the second height-adjusting backing plate are screwed to the sleeper, and the flat washer is located on the spring bar and the spiral The cap ends of the road stud are sleeved on the spiral road stud.

Preferably, the position in the sleeper supporting rail groove that is connected to the sleeper shoulder is recessed downward to form a first strip-shaped groove that penetrates back and forth in a direction parallel to the length of the rail, and the second height-adjusting pad is connected with The corresponding position of the first strip-shaped groove protrudes downward and is formed with a first convex part that can fit to the inner wall of the first strip-shaped groove; The position where the two extensions are connected is recessed downward to form a second strip-shaped groove that penetrates back and forth in a direction parallel to the length of the rail, and the bottom of the gauge baffle is convex downward at a position corresponding to the second strip-shaped groove And a second convex part that can fit and fit on the inner wall of the second strip groove is formed.

Preferably, the pad under the rail is a rubber pad or a composite pad, and the iron plate is a polyethylene pad or a foamed polyurethane material pad; wherein, the composite pad is composed of a stainless steel plate and a second It is composed of three rubber backing plates, and the stainless steel plate is bonded to the upper surface of the third rubber backing plate through vulcanization.

Preferably, the upper part of the iron backing plate is provided with a protruding iron backing shoulder, and the inner side of the iron backing shoulder abuts against the outer side of the insulating block; the outer side of the insulating block is formed with a The side grooves where the shoulders of the iron backing plate fit together, and the inner side of the shoulders of the iron backing plate is clamped in the side grooves.

Preferably, the gauge baffle and the insulating block are both made of engineering plastic; wherein, the engineering plastic is glass fiber reinforced polyamide.

Preferably, the inner surface of the gauge baffle is formed with a vertical surface that matches with the side of the iron backing plate, and a vertical baffle is fixedly connected to the front and rear ends of the vertical surface. The front and rear edges of the iron backing plate and the lower backing plate of the iron plate abut between the two vertical baffles.

Preferably, the working surface of the gauge baffle is upwardly formed with a spring bar shoulder, and the inner side of the spring bar shoulder is formed with a shallow groove for engaging the outer side of the spring bar.

Preferably, a first side ear and a second side ear are respectively provided on the bottom surface of the under-rail pad in the extension direction of the rail, between the under-rail pad and the iron pad A trimming backing plate is also provided. The front and rear ends of the trimming backing plate abut between the first ear and the second ear, and the inner sides of the first ear and the second ear are tightly attached to each other. On the side of the iron backing plate.

Preferably, the iron backing plate is respectively formed on both sides of the under-rail backing plate with at least two stoppers for pressing against the side of the under-rail backing plate and the fine-adjusting backing plate; the sleeper is embedded There is a screw sleeve that fits with the spiral spike, and the bottom of the first height-adjusting pad is formed with a recess, and the recess can be formed with a plurality of support bars extending in a direction parallel to the length of the rail.

Preferably, the iron backing plate, the lower backing plate of the iron plate, the first height-adjusting backing plate and the second height-adjusting backing plate are respectively provided with a first through hole, a second through hole, and a second through hole corresponding to the spiral spike. The third through hole and the fourth through hole; the first height-adjusting backing plate is a steel backing plate, the second height-adjusting backing plate is a polyethylene plastic backing plate, and the thickness of the first height-adjusting backing plate is: 25-55mm, the thickness of the second height-adjusting pad is: 4-6mm; wherein, the second height-adjusting pad includes a first left half and a first right half that are bilaterally symmetrical. When the thickness of a height-adjusting pad is less than or equal to 40 mm, the first height-adjusting pad is divided into a second left half and a second right half that are bilaterally symmetrical.

According to the above technical solution, one end of the spiral spike in the present invention passes vertically and downwards sequentially through the gap in the middle of the elastic strip, the iron backing plate, the lower backing plate of the iron plate, and the detachable first height-adjusting backing plate And the second height-adjusting pad are screwed to the sleeper, and the flat washer is located between the elastic strip and the cap end of the spiral spike and is sleeved on the spiral spike, that is, the elastic The bar is crimped on the insulating block and the gauge baffle, the gauge baffle presses the iron block to limit the position, and the rail is raised by the first height-adjusting pad and the second height-adjusting pad. Among them, the first extension part The top end of the rail should be higher than the top of the sleeper shoulder, and the top end of the second extension should be higher than the top of the first extension. The pressure on the rail passes through the insulating block, iron backing plate, and gauge baffle in sequence on the one hand. , The second extension part and the first extension part are transmitted to the sleeper shoulder decomposition, on the other hand, the second extension part and the first extension part are transmitted to the sleeper shoulder decomposition through the elastic strip. Therefore, the fastener assembly exists in two states. One is to remove the first height-adjusting pad and the second height-adjusting pad to lower the height of the rail; the second is to install the first height-adjusting pad and the second height-adjusting pad. /Or the second height-adjusting pad, when the rail passes through the first height-adjusting pad and/or the second height-adjusting pad and is raised within a certain range, it does not affect the decomposition of its force. The under-rail pad and the insulating block play a role of insulation on the one hand, and a shock absorption role on the other. In addition, when the track spacing needs to be adjusted, the track spacing can be fine-tuned by replacing the insulating blocks of different sizes.

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 overall assembly diagram of a preferred embodiment when the fastener assembly is not adjusted in height;

Figure 2 is an overall assembly diagram of a preferred embodiment when the fastener assembly is adjusted in height;

Figure 3 is a cross-sectional view of an overall assembly view of a preferred embodiment when the fastener assembly is adjusted in height;

4 is a schematic diagram of the overall structure of a preferred embodiment of the first height-adjusting pad;

5 is a schematic diagram of the overall structure of a preferred embodiment of the second height-adjusting pad;

Fig. 6 is a schematic diagram of the overall structure of a preferred embodiment of an insulating block;

Figure 7 is a schematic diagram of the overall structure of a preferred embodiment of the screw sleeve;

FIG. 8 is a schematic diagram of the overall structure of a preferred embodiment of the iron plate lower backing plate;

Figure 9 is a schematic diagram of the overall structure of a preferred embodiment of the under-rail pad;

Figure 10 is a schematic diagram of the overall structure of a preferred embodiment of the gauge baffle;

Figure 11 is a schematic diagram of the overall structure of a preferred embodiment of the iron backing plate;

Fig. 12 is a schematic diagram of the overall structure of a preferred embodiment of a spring bar.

Description of Reference Signs

1 Sleeper 2 Sleeper shoulder

3 The first height adjustment pad 4 The second height adjustment pad

5 The first slot 6 The second slot

7 Gauge baffle 8 Iron pad

9 Iron plate underlaying plate 10 Insulating block

11 bullets 12 spiral spikes

13 Flat washer 14 Elastic strip shoulder

15 rail underlaying plate 16 rail

Bottom of track 17 18 support bars

19 screw casing 20 fine-tuning backing plate

21 The second extension 22 The third through hole

23 First through hole 24 First extension

25 Fourth through hole 26 side groove

27 Second through hole 28 First ear

29 Second side ear 30 Vertical baffle

31 Second convex part 32 Shallow groove

33 Iron pad block shoulder 34 block

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. Here, the front-rear direction refers to the extending direction of the rail 16, and the left-right direction refers to the left and right directions of the rail 16.

Refer to the fastener assembly shown in Figures 1-12 for the ballastless track with sleeper shoulders. The fastener assembly includes: the bottom surface of the rail bottom 17 of the rail 16 and the upper surface of the sleeper rail groove from top to bottom. The under-rail pad 15, the iron pad 8, the iron lower pad 9 and the detachable first height-adjusting pad 3 and the second height-adjusting pad 4; the sleeper supporting rail groove is arranged in the sleeper 1, and the two sides of the sleeper supporting rail groove extend outwardly obliquely upward to form a sleeper shoulder 2. The two ends of the second height-adjusting pad 4 rise up and are formed parallel to and fit the The first extension portion 24 on the inner surface of the sleeper shoulder 2, and both ends of the first height-adjusting pad 3 rise up and form a second extension portion that is parallel and fits the inner surface of the first extension portion 24 21; between the second extension 21 and the iron backing plate 8 is provided with a gauge baffle 7, the inner and outer sides of the gauge baffle 7 are respectively pressed against the side and the iron backing plate 8 On the inner side of the second extension part 21, an insulating block 10 is fastened on the upper surface and the side surface of the rail bottom 17, one end of the elastic strip 11 is fastened on the top surface of the insulation block 10, and the other end is fastened on the top surface of the insulation block 10. The working surface of the gauge baffle 7; one end of the spiral spike 12 passes vertically downwards sequentially through the gap in the middle of the elastic strip 11, the iron backing plate 8, the iron plate lower backing plate 9, and the first height-adjusting pad The plate 3 and the second height-adjusting pad 4 are screwed to the sleeper 1, and a flat washer 13 is located between the elastic strip 11 and the cap end of the spiral spike 12 and is sleeved on the spiral spike 12 .

Through the implementation of the above technical solution, one end of the spiral spike 12 vertically downwards sequentially passes through the gap in the middle of the elastic strip 11, the iron backing plate 8, the iron plate lower backing plate 9 and the detachable first height adjustment The backing plate 3 and the second height-adjusting backing plate 4 are screwed to the sleeper 1, and a flat washer 13 is located between the elastic strip 11 and the cap end of the spiral spike 12 and is sleeved on the spiral spike 12 Up, that is, the elastic bar 11 is pressed on the insulating block 10 and the gauge baffle 7 through the spiral spike 12, and the gauge baffle 7 presses and limits the iron block, and passes through the first height adjustment pad 3 and the second adjustment pad The high pad 4 pads up the rail 16, wherein the top of the first extension 24 should be higher than the top of the sleeper shoulder 2, and the top of the second extension 21 should be higher than the top of the first extension 24. The pressure on the 16 is transmitted to the sleeper shoulder 2 through the insulating block 10, the iron backing plate 8, the gauge baffle 7, the second extension 21 and the first extension 24 in sequence on the one hand, and is decomposed by the elastic on the other hand. The strip 11 is transferred to the gauge baffle 7, the second extension 21 and the first extension 24 are transferred to the sleeper shoulder 2 to disassemble. Therefore, the fastener assembly exists in two states. One is to remove the first height-adjusting pad 3 and the second height-adjusting pad 4. At this time, the thickness of the sleeper shoulder 2 can be 6-9mm. Lower the height of the rail 16; secondly, install the first height-adjusting pad 3 and/or the second height-adjusting pad 4, when the rail 16 passes the first height-adjusting pad 3 and/or the second height-adjusting pad 4 After being raised within a certain range, it does not affect the decomposition of its force. At this time, the thickness of the sleeper shoulder 2 should be 15-17mm. The under-rail pad 15 and the insulating block 10 play a role of insulation on the one hand, and a shock absorption role on the other hand. In addition, when the track spacing needs to be adjusted, the track spacing can be fine-tuned by replacing the insulating block 10 of different sizes. The insulating block 10 is an inverted L shape as shown in FIG. 5.

In this embodiment, in order to improve the stability of the second height-adjusting pad 4 installed in the sleeper rail groove, prevent the second height-adjusting pad 4 from sliding out toward the left and right sides, and the increasing gauge baffle 7 is installed in the first An increase in the stability of the backing plate 3 prevents the gauge baffle 7 from sliding out toward the left and right sides. Preferably, the position in the sleeper supporting rail groove connected to the sleeper shoulder 2 is recessed downward to form a parallel edge The first strip groove 5 penetrates back and forth in the length direction of the rail 16, and the position corresponding to the first strip groove 5 on the second height-adjusting pad 4 protrudes downward and is formed to fit snugly The first convex portion on the inner wall of the first strip groove 5; the position of the first height-adjusting pad 3 connected to the second extension portion 21 is recessed downwardly and formed along the length direction parallel to the rail 16 The second strip groove 6 penetrates back and forth. The bottom of the gauge baffle 7 and the position corresponding to the second strip groove 6 protrude downward and are formed to fit the second strip The second protrusion 31 on the inner wall of the groove 6.

In this embodiment, the under-rail pad 15 can be selected in a wide range in the field, and should have better insulation. When the rail 16 needs to be further lowered, preferably, the under-rail pad 15 is A rubber backing plate or a composite backing plate, the iron plate lower backing plate 9 is a polyethylene backing plate or a foamed polyurethane material backing plate; wherein, the composite backing plate is composed of a stainless steel plate and a third rubber backing plate, and the stainless steel The plate is bonded to the upper surface of the third rubber pad through vulcanization. Specific measures for lowering: on the basis of removing the first height-adjusting pad 3 and the second height-adjusting pad 4, replace the iron pad with a lower thickness. In order to alleviate the impact of the iron pad on the sleeper, the iron pad is lowered. The plate 9 uses a polyethylene backing plate. According to the needs of the amount of rail reduction, the thickness of the cushioning backing plate under the iron backing plate is 1-3mm. Therefore, the steel rail can be lowered by 5-10mm. The iron plate lower pad 9 is used as a pad made of foamed polyurethane material when used for height adjustment.

In this embodiment, preferably, the upper part of the iron backing plate 8 is provided with a protruding iron backing shoulder 33, and the inner side of the iron backing shoulder 33 abuts against the outer side of the insulating block 10; The outer side of the insulating block 10 is formed with a side groove 26 that fits with the iron backing shoulder 33, and the inner side of the iron backing shoulder 33 is engaged in the side groove 26. The lateral load of the train transmitted from the rail 16 is first borne by the iron backing plate shoulder 33, and then the lateral force is transmitted to the gauge baffle 7 through the iron backing plate 8, and finally the lateral force is transmitted to the sleeper shoulder 2, thereby reducing the position of the horizontal load, ensuring that the sleeper shoulder 2 bears the horizontal horizontal force, and making the rail 16 structure more stable. The provision of the side groove 26 can effectively limit the position of the insulating block 10 and prevent it from falling off toward the extension direction of the rail 16.

In this embodiment, in order to further improve the strength and insulation performance of the gauge baffle 7 and the insulating block 10, preferably, both the gauge baffle 7 and the insulating block 10 are made of engineering plastics; wherein, the engineering The plastic is glass fiber reinforced polyamide.

In this embodiment, in order to make the force between the gauge baffle 7 and the iron backing plate 8 more balanced, preferably, the inner side of the gauge baffle 7 is formed with the side edge of the iron backing plate 8. A vertical baffle 30 is fixedly fixed to the front and rear ends of the vertical surface to be matched with each other. The front and rear sides of the iron backing plate 8 and the lower backing plate 9 abut against the two Between the vertical baffle 30. By setting the vertical baffle 30 to limit the front and rear positions of the iron backing plate 8, part of the torsion force received by the iron backing plate 8 during the operation of the train can be effectively offset.

In this embodiment, in order to further improve the stability of the elastic strip 11 acting on the gauge baffle 7, preferably, the working surface of the gauge baffle 7 protrudes upward to form a spring strip shoulder 14, so A shallow groove 32 for engaging with the outer side of the elastic bar 11 is formed on the inner side of the elastic bar shoulder 14.

In this embodiment, preferably, a first edge 28 and a second edge 29 are respectively provided on the bottom surface of the under-rail pad 15 located in the extension direction of the steel rail 16. A fine-adjusting backing plate 20 is also provided between the backing plate 15 and the iron backing plate 8. The front and rear ends of the backing plate 20 abut between the first side ear 28 and the second side ear 29, The inner sides of the first side ear 28 and the second side ear 29 are close to the side of the iron pad 8. The height of the steel rail 16 can be fine-tuned by setting the fine-adjusting backing plate 20. In order to prevent it from falling off, the first side ear 28 and the second side ear 29 are provided to block the fine-adjusting backing plate 20.

In this embodiment, preferably, at least two sides of the iron backing plate 8 located on both sides of the under-rail backing plate 15 are respectively formed to abut against the under-rail backing plate 15 and the fine-adjusting backing plate 20. The side stop 34; the sleeper 1 is embedded with a screw sleeve 19 that fits the spiral spike 12, and the bottom of the first height-adjusting pad 3 is formed with a concave portion, and how much the concave portion can be formed A support bar 18 extending in a direction parallel to the length of the steel rail 16. By setting the stopper 34 and abutting against the side of the under-rail pad 15 and the side of the fine-tuning pad 20, it is used to limit the left and right positions of the side of the under-rail pad 15 and the fine-tuning pad 20 to prevent its deviation from affecting the overall fastener assembly As a result, the pre-embedding of the screw sleeve 19 can make the spiral spike 12 more stable, and the length of the spiral spike 12 can be changed adaptively according to the height of the pad. By providing a recess at the bottom of the first height-adjusting pad 3, and arranging the support bar 18 in the recess, the contact area between the first height-adjusting pad 3 and the second height-adjusting pad 4 can be reduced, and both of them can be effectively prevented.者相合。 The one sticks together.

In this embodiment, preferably, the iron shim plate 8, the iron plate lower shim plate 9, the first height-adjusting shim plate 3 and the second height-adjusting shim plate 4 are respectively provided with corresponding spiral spikes 12 The first through hole 23, the second through hole 27, the third through hole 22 and the fourth through hole 25; the first height-adjusting backing plate 3 is a steel backing plate, and the second height-adjusting backing plate 4 is a poly Vinyl plastic backing board, the thickness of the first height-adjusting backing board 3 is: 25-55mm, the thickness of the second height-adjusting backing board 4 is: 4-6mm; wherein, the second height-adjusting backing board 4 It includes a first left half and a first right half that are symmetrical. When the thickness of the first height-adjusting pad 3 is less than or equal to 40 mm, the first height-adjusting pad 3 is divided into a symmetrical first Two left half and second right half. In order to increase the adjustment range of the rail spacing, the first through hole 23 can be set as a strip hole, and the iron pad 8 can be moved within a certain range by adjusting the thickness of the gauge baffle 7, so that the rail can be further adjusted. spacing. The thickness of the first height-adjusting pad 3 should be higher than the thickness of the second height-adjusting pad 4, and the second height-adjusting pad 4 also serves as a buffer between the sleeper 1 and the second height-adjusting pad 4 A polyethylene plastic backing plate is used. Because the thickness of the first height-adjusting backing plate 3 is large, it should have the characteristics of not being easily deformed, so a steel backing plate is used. After many tests, it is found that when the thickness of the first height-adjusting pad 3 is greater than 40mm, the overall stability of the fastener assembly will be affected if the two-half structure continues to be adopted due to the large amount of height-adjustment. The integral structure can effectively avoid this problem. The structure of the first left half and the first right half and the second left half and the second right half can refer to FIG. 4, that is, the structure of the first height-adjusting pad 3 and/or the second height-adjusting pad 4 The position of the shaft section is cut to form a two-half symmetrical structure.

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 ballastless track with sleeper shoulders, characterized in that the fastener assembly comprises: the bottom surface of the rail bottom (17) of the steel rail (16) and the sleeper rail groove The lower rail pad (15), the iron pad (8), the iron lower pad (9) and the detachable first height-adjusting pad (3) and the second height-adjusting pad between the upper surfaces of the (4);

The sleeper supporting rail groove is arranged on the top of the sleeper (1), and both sides of the sleeper supporting rail groove extend upward obliquely to form a sleeper shoulder (2), and the second height-adjusting pad (4) ) Are raised up and formed with first extensions (24) that are parallel and fitted to the inner side of the sleeper shoulder (2), and both ends of the first height-adjusting pad (3) are raised and formed There is a second extension part (21) that is parallel and fits the inner surface of the first extension part (24);

A gauge baffle (7) is arranged between the second extension (21) and the iron backing plate (8), and the inner and outer sides of the gauge baffle (7) are respectively pressed against the iron backing On the side of the plate (8) and the inner side of the second extension (21), an insulating block (10) is fastened on the upper surface and the side of the rail bottom (17), and one end of the elastic strip (11) is fastened On the top surface of the insulating block (10), the other end is crimped on the working surface of the gauge baffle (7);

One end of the spiral spike (12) passes through the gap in the middle of the elastic strip (11), the iron backing plate (8), the lower backing plate (9), and the first height-adjusting backing plate ( 3) and the second height-adjusting pad (4) are screwed to the sleeper (1), and the flat washer (13) is located between the elastic strip (11) and the cap end of the spiral spike (12) and It is sleeved on the spiral spike (12).
The fastener assembly for a ballastless track with a sleeper shoulder according to claim 1, wherein the position in the sleeper supporting rail groove connected to the sleeper shoulder (2) is recessed downward to form Along the first strip groove (5) that penetrates back and forth in a direction parallel to the length of the steel rail (16), the position corresponding to the first strip groove (5) on the second height-adjusting pad (4) is downward Protruding and forming a first convex part that can fit snugly on the inner wall of the first strip-shaped groove (5);

The position in the first height-adjusting pad (3) connected to the second extension (21) is recessed downward to form a second strip-shaped groove (6) that penetrates back and forth in a direction parallel to the length of the rail (16). ), the bottom of the gauge baffle (7) and the position corresponding to the second strip-shaped groove (6) protrude downward and are formed to fit in the second strip-shaped groove (6) fitfully The second protrusion (31) of the inner wall.
The fastener assembly for a ballastless track with a sleeper shoulder according to claim 1, wherein the under-rail pad (15) is a rubber pad or a composite pad, and the iron plate is under-pad The board (9) is a polyethylene backing board or a foamed polyurethane material backing board; among them,

The composite backing plate is composed of a stainless steel plate and a third rubber backing plate, and the stainless steel plate is bonded to the upper surface of the third rubber backing plate through vulcanization.
The fastener assembly for a sleeper shoulder in a ballastless track according to claim 1, wherein the upper part of the iron backing plate (8) is provided with a protruding iron backing shoulder (33), The inner side of the iron backing shoulder (33) abuts the outer side of the insulating block (10);

The outer side of the insulating block (10) is formed with a side groove (26) that fits with the iron backing shoulder (33), and the inner side of the iron backing shoulder (33) is engaged with the side In the groove (26).
The fastener assembly for a sleeper shoulder in a ballastless track according to claim 1, wherein the gauge baffle (7) and the insulating block (10) are both made of engineering plastics; wherein, The engineering plastic is glass fiber reinforced polyamide.
The fastener assembly for a ballastless track with a sleeper shoulder according to claim 1, wherein the inner side of the gauge baffle (7) is formed with a contact with the iron backing plate (8) A vertical baffle (30) is fixed on the front and rear ends of the vertical surface with matching sides, and the front and back of the iron backing plate (8) and the lower backing plate (9) are fixedly connected to each other. The rear side abuts between the two vertical baffles (30).
The fastener assembly for a ballastless track with a sleeper shoulder according to claim 1, wherein the working surface of the gauge baffle (7) protrudes upward to form an elastic strip shoulder (14) ), the inner side of the elastic strip retaining shoulder (14) is formed with a shallow groove (32) for engaging the outer side of the elastic strip (11).
The fastener assembly for a ballastless track with a sleeper shoulder according to claim 1, wherein the bottom surface of the under-rail pad (15) is located at two positions in the extension direction of the steel rail (16). A first side ear (28) and a second side ear (29) are respectively provided on the sides, and a fine-adjusting pad (20) is also provided between the under-rail pad (15) and the iron pad (8) , The front and rear ends of the fine adjustment pad (20) abut between the first side ear (28) and the second side ear (29), and the first side ear (28) and the second side ear The inner surface of the ear (29) is close to the side of the iron pad (8).
The fastener assembly for a ballastless track with a sleeper shoulder according to claim 8, wherein the iron backing plate (8) is formed on both sides of the under-rail backing plate (15) respectively. There are at least two stoppers (34) for pressing against the side of the under-rail pad (15) and the fine-adjusting pad (20);

The sleeper (1) is embedded with a screw sleeve (19) that fits with the spiral spike (12), and the bottom of the first height-adjusting pad (3) is formed with a recess, and the recess can be formed There are a plurality of support bars (18) extending parallel to the length of the steel rail (16).
The fastener assembly for a ballastless track with a sleeper shoulder according to any one of claims 1-9, wherein the iron backing plate (8) and the iron plate lower backing plate (9) , The first height-adjusting pad (3) and the second height-adjusting pad (4) are respectively provided with a first through hole (23) and a second through hole (27) corresponding to the spiral spike (12) , The third through hole (22) and the fourth through hole (25);

The first height-adjusting backing plate (3) is a steel backing plate, the second height-adjusting backing plate (4) is a polyethylene plastic backing plate, and the thickness of the first height-adjusting backing plate (3) is 25 -55mm, the thickness of the second height-adjusting pad (4) is: 4-6mm; wherein, the second height-adjusting pad (4) includes a first left half and a first right half that are bilaterally symmetrical When the thickness of the first height-adjusting pad (3) is less than or equal to 40 mm, the first height-adjusting pad (3) is divided into a second left half and a second right half that are bilaterally symmetrical.