Elastic supporting block type ballastless track short sleeper

Abstract

The utility model relates to an elastic supporting block type ballastless track short sleeper. A sleeper in an existing elastic supporting block type ballastless track is low in stability and elasticity, and the high requirements of a modern high-speed railway for stability and comfort cannot be met. The device comprises a concrete supporting block, embedded iron seats, a block lower base plate and a rubber sleeve shoe, a pair of embedded iron seats is arranged on the upper surface of the concrete supporting block, a first groove is horizontally formed in the outer side wall of the concrete supporting block in a circumferential mode, and a second groove is longitudinally formed in the bottom of the concrete supporting block; the rubber sleeve boot wraps the lower portion of the concrete supporting block, the top end of the rubber sleeve boot extends inwards to form a protruding eave arranged in a circumferential mode, and a plurality of circular-truncated-cone-shaped protrusions used for enhancing elasticity are arranged on the inner side wall of the rubber sleeve boot. The block lower base plate is arranged between the bottom of the concrete supporting block and the rubber sleeve shoe, and protrusions are longitudinally arranged on the upper surface of the block lower base plate. The integral structural stability and the elastic deformation capability of the sleeper are obviously enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of railway track engineering, in particular to an elastic support block type ballastless track short sleeper. Background Art

[0002] Elastic support blocks are a new type of engineering structural material with the characteristics of low specific gravity, high toughness, strong durability, light weight and good elasticity. Due to their excellent physical properties, they are widely used in engineering construction. The wide application of elastic support blocks has significantly improved the quality of engineering structures and improved the safety and durability of projects.

[0003] At present, elastic support block type ballastless track is one of the important types in my country's ballastless track structure system. It adopts an elastic cushion layer under the concrete support block, and rubber boots are added to the lower part and the periphery of the support block. After the height, level and track gauge of the support block are adjusted, the ballast bed concrete is poured in situ to wrap the support block together with the rubber boot. However, the stability and elasticity of the sleepers in the existing elastic support block type ballastless track are relatively low, and often cannot meet the high requirements of modern high-speed railways for stability and comfort. Summary of the invention

[0004] The utility model aims to provide a short sleeper of an elastic support block type ballastless track, so as to at least solve the problem of low stability and elasticity of the sleeper in the current elastic support block type ballastless track.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An elastic support block type ballastless track short sleeper, comprising a concrete support block, an embedded iron seat, a pad under the block and a rubber boot, wherein the concrete support block comprises an upper portion and a lower portion, a first groove is arranged between the upper portion and the lower portion, a pair of embedded iron seats are arranged on the upper surface of the concrete support block, and a second groove is longitudinally arranged at the bottom of the concrete support block;

[0007] The rubber boot wraps the lower part of the concrete support block, the top of the rubber boot extends inwardly with a convex eave arranged circumferentially and matched with the first groove, and the inner wall of the rubber boot is provided with a plurality of truncated cone-shaped protrusions for enhancing elasticity;

[0008] The block lower pad is arranged between the bottom of the concrete support block and the rubber boot, and a protrusion which fits with the second groove is longitudinally arranged on the upper surface of the block lower pad.

[0009] Furthermore, the first groove is horizontally circumferentially arranged on the outer side wall of the concrete support block, and the lengths of two sides of the first groove are inconsistent, and the length of the upper side is longer than the length of the lower side.

[0010] Furthermore, the upper cross-sectional area of ​​the concrete support block is larger than the lower cross-sectional area.

[0011] Furthermore, the upper portion forms a raised brim structure.

[0012] Furthermore, the cross-sectional area of ​​the upper portion decreases gradually from bottom to top, and the cross-sectional area of ​​the lower portion decreases gradually from top to bottom. Furthermore, both the second groove and the protrusion are truncated cone structures.

[0013] Furthermore, the rubber overboot is a basin-type structure.

[0014] Furthermore, the lower pad is a rubber gasket arranged in two layers, upper and lower layers, and a hollow structure including a plurality of gaps is arranged between the rubber gaskets.

[0015] Furthermore, the gaps in the hollow structure are triangular, square or circular.

[0016] Furthermore, a plurality of convex strips are arranged at intervals on the upper and lower surfaces of the block bottom pad, and the convex strips on the upper and lower surfaces are arranged staggered with each other.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. The utility model makes the rubber boot firmly installed on the lower part of the concrete support block by tightly fitting the first groove of the concrete support block and the convex eave of the rubber boot, which significantly enhances the overall structural stability of the sleeper, not only ensures the firm connection between the structures, but also effectively prevents the intrusion of debris and rainwater into the rubber boot, thereby extending the service life of the sleeper; the second groove of the concrete support block and the protrusion of the block lower pad are tightly fitted, so that the connection between the concrete support block and the block lower pad is more firmly connected, effectively preventing the block lower pad from moving under the train load, ensuring the overall stability of the track structure, and further improving the safety performance of the track; the utility model greatly enhances the elastic deformation capacity of the rubber boot by arranging a truncated cone-shaped protrusion on the inner wall of the rubber boot, so that the sleeper can better adapt to and disperse the pressure when subjected to the dynamic load of the train, thereby improving the riding comfort.

[0019] 2. The gaps between the conical protrusions on the inner wall of the rubber boot of the utility model can provide the necessary "breathing" space for the sleeper when the concrete support block makes up and down piston movements, ensuring smooth flow of gas, effectively avoiding the adverse effects of internal pressure fluctuations on the sleeper performance, and further improving the durability and reliability of the sleeper.

[0020] 3. The utility model further enhances the elasticity and buffering effect of the block lower pad by configuring the block lower pad to be an upper and lower layer of rubber gaskets, configuring a hollow structure between the two layers of rubber gaskets, and configuring arc-shaped convex strips on the upper and lower surfaces of the block lower pad at intervals. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a vertical view of the utility model;

[0023] Figure 2 is a cross-sectional view of the utility model;

[0024] FIG3 is a concrete support block elevation view;

[0025] FIG4 is a cross-sectional view of a concrete support block;

[0026] Figure 5 is a longitudinal section of the bottom pad;

[0027] FIG6 is an enlarged schematic diagram of point A in FIG5;

[0028] Fig. 7 is a longitudinal section of the rubber overboot;

[0029] Fig. 8 is a schematic plan view of the inner wall of the rubber overboot;

[0030] FIG9 is an enlarged schematic diagram of point B in FIG7;

[0031] The symbols in the figure are:

[0032] 1-concrete support block, 11-first groove, 12-upper part, 13-second groove, 14-lower part,

[0033] 2-embedded iron seat, 3-lower pad, 31-protrusion, 32-rubber gasket, 33-hollow structure, 34-convex strip,

[0034] 4-rubber boots, 41-convex eaves, 42-cone-shaped protrusions. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Meanwhile, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. Of course, such objects can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0039] Example:

[0040] As shown in Figures 1 and 2, an elastic support block type ballastless track short sleeper includes a concrete support block 1, an embedded iron seat 2, a pad 3 under the block and a rubber boot 4. The concrete support block 1 is a main structure. The concrete support block 1 includes an upper part 12 and a lower part 14. A pair of embedded iron seats 2 are provided on the upper surface of the concrete support block 1 for installing rails and fasteners. The concrete support block 1 is a reinforced concrete structure to ensure high strength and durability.

[0041] As shown in FIG. 3 and FIG. 4 , a first groove 11 is provided between the upper portion 12 and the lower portion 14 . The first groove 11 is horizontally arranged around a circle and embedded in the outer wall of the concrete support block 1 . A pair of second grooves 13 are longitudinally provided at the bottom of the concrete support block 1 .

[0042] Among them, the bottom of the first groove 11 is a concave arc, and the lengths of the two sides are inconsistent. The length of the upper side is longer than the length of the lower side. The cross-sectional area of ​​the upper part 12 is larger than the cross-sectional area of ​​the lower part 14, so that the upper part 12 forms a raised brim structure, the upper end chamfer of the upper part 12 is an arc, and the lower end chamfer is an acute angle, the upper end chamfer of the lower part 14 is an arc, and the lower end chamfer is a flat angle, the cross-sectional area of ​​the upper part 12 gradually decreases from bottom to top, and the cross-sectional area of ​​the lower part 14 gradually decreases from top to bottom.

[0043] Furthermore, the rubber boot 4 wraps the lower part 14 of the concrete support block 1 to provide elastic support. The rubber boot 4 is a basin-shaped structure that can fit tightly against the concrete support block 1. The rubber boot 4 is made of vulcanized synthetic rubber or natural rubber, and its size matches the lower part 14 of the concrete support block 1.

[0044] As shown in FIG7 , a circumferentially arranged convex eave 41 matching the first groove 11 extends inward from the top of the rubber overboot 4, and the size of the convex eave 41 matches the first groove 11 of the concrete support block 1. The end of the convex eave 41 located on the inner side of the rubber overboot 4 is a convex arc, matching the concave arc at the bottom of the first groove 11. The lower end of the convex eave 41 and the extension of the inner wall of the rubber overboot 4 are arc-shaped, matching the arc chamfer at the upper end of the lower part 14. The first groove 11 and the convex eave 41 match each other, which not only makes the rubber overboot 4 firmly installed on the lower part of the concrete support block 1, but also achieves an excellent sealing effect, can effectively prevent debris and rainwater from invading the inside of the rubber overboot 4, and prolongs the service life of the sleeper.

[0045] As shown in FIGS. 8 and 9 , a number of truncated cone-shaped protrusions 42 for enhancing elasticity are evenly distributed on the inner wall of the rubber boot 4. The provision of the truncated cone-shaped protrusions 42, on the one hand, significantly enhances the elastic deformation capacity of the rubber boot 4, enabling it to better adapt to and disperse the pressure from above; on the other hand, when the concrete support block 1 generates up and down piston movement due to the dynamic load of the train, the gaps formed between the several truncated cone-shaped protrusions 42 can provide the necessary "breathing" space for the sleeper, ensure the smooth flow of gas, effectively avoid the adverse effects of internal pressure fluctuations on the sleeper performance, and further improve the durability and reliability of the sleeper.

[0046] Furthermore, the block lower pad 3 is arranged between the bottom of the concrete support block 1 and the rubber boot 4 for increasing elasticity and reducing vibration. The block lower pad 3 is made of synthetic rubber or natural rubber vulcanized.

[0047] As shown in FIG5 , a pair of protrusions 31 matching with the second groove 13 are longitudinally arranged on the upper surface of the block lower pad 3, and the size and relative position thereof match with the second groove 13 at the bottom of the concrete support block 1. The second groove 13 and the protrusion 31 match, which further enhances the stability of the block lower pad 3, effectively prevents the block lower pad 3 from moving under the action of the train load, ensures the overall stability of the track structure, and further improves the safety performance of the track.

[0048] In this embodiment, the second groove 13 and the protrusion 31 are both truncated cone structures.

[0049] As shown in FIG. 6 , the lower pad 3 is a rubber gasket 32 ​​arranged in two layers, and a hollow structure 33 including a plurality of gaps is arranged between the rubber gaskets 32 , so that the lower pad 3 has elastic compression deformation capability.

[0050] The gaps of the hollow structure 33 are triangular, square or circular.

[0051] Furthermore, a plurality of convex strips 34 are evenly spaced on the upper and lower surfaces of the block lower pad 3 . The convex strips 34 are arc-shaped structures, and the convex strips 34 on the upper and lower surfaces are staggered with each other, which further enhances the elasticity and buffering effect of the block lower pad 3 .

[0052] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. An elastic support block type ballastless track short sleeper, characterized in that: The concrete support block (1) comprises a concrete support block (1), an embedded iron seat (2), a lower pad (3) and a rubber boot (4), wherein the concrete support block (1) comprises an upper portion (12) and a lower portion (14), a first groove (11) is arranged between the upper portion (12) and the lower portion (14), a pair of embedded iron seats (2) are arranged on the upper surface of the concrete support block (1), and a second groove (13) is arranged longitudinally at the bottom of the concrete support block (1); The rubber boot (4) wraps around the lower part (14) of the concrete support block (1), the top of the rubber boot (4) extends inwardly to have a convex eave (41) arranged circumferentially and fitting with the first groove (11), and the inner wall of the rubber boot (4) is provided with a plurality of truncated cone-shaped protrusions (42) for enhancing elasticity; The block bottom pad (3) is arranged between the bottom of the concrete support block (1) and the rubber boot (4), and a protrusion (31) which fits with the second groove (13) is longitudinally arranged on the upper surface of the block bottom pad (3).

2. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: The first groove (11) is horizontally circumferentially arranged on the outer wall of the concrete support block (1); the two sides of the first groove (11) are of different lengths, and the upper side is longer than the lower side.

3. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: The cross-sectional area of ​​the upper portion (12) of the concrete support block (1) is greater than the cross-sectional area of ​​the lower portion (14).

4. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: The upper portion (12) forms a raised brim structure.

5. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: The cross-sectional area of ​​the upper portion (12) gradually decreases from bottom to top, and the cross-sectional area of ​​the lower portion (14) gradually decreases from top to bottom.

6. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: The second groove (13) and the protrusion (31) are both truncated cone structures.

7. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: The rubber overboot (4) is a basin-type structure.

8. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: The lower pad (3) is a rubber gasket (32) arranged in two layers, upper and lower, and a hollow structure (33) containing a plurality of gaps is arranged between the rubber gaskets (32).

9. The elastic support block type ballastless track short sleeper according to claim 8, characterized in that: The gaps in the hollow structure (33) are triangular, square or circular.

10. The elastic support block type ballastless track short sleeper according to claim 1, characterized in that: A plurality of convex strips (34) are arranged at intervals on the upper and lower surfaces of the block bottom pad (3), and the convex strips (34) on the upper and lower surfaces are arranged staggered with each other.

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