Sleeper structure for renewal and reconstruction of ballastless track

Abstract

The utility model relates to a sleeper structure for updating and transforming a ballastless track. An existing structure for updating and transforming a ballastless track is heavy in weight and difficult to construct and transport, the workload of chiseling and re-pouring is large, and meanwhile the replacement range cannot be flexibly controlled, so that the construction time is long. The sleeper supporting device comprises a sleeper supporting block and a connecting hinge, the two sleeper bearing blocks are symmetrically arranged, and rail bearing tables are arranged on the top faces of the sleeper bearing blocks. The connecting hinge is arranged between the two sleeper supporting blocks and connects the two sleeper supporting blocks into a whole, the two sleeper supporting blocks form a complete hinged sleeper when being unfolded, the two sleeper supporting blocks are stacked up and down when being folded, and a plurality of hinged sleepers are connected into an integral hinged sleeper frame when being replaced in a large range; the hinged sleeper is of a reinforced concrete composite structure. The device is light in weight and convenient to transport, the workload of chiseling and re-pouring is small, and the replacement range can be controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of ballastless track maintenance and renovation, and specifically relates to a sleeper structure for ballastless track renewal and renovation. Background Technique

[0002] Ballastless tracks are widely used in high-speed railways. With the large-scale operation of high-speed railways, large-scale maintenance and renovation projects of ballastless tracks are urgently needed. Currently, the commonly used technical solutions for ballastless track maintenance and renovation mainly include repairing ballastless beds, chiseling and then re-pouring, or replacing ballastless track slabs, etc. After the settlement or upward arching deformation of the ballastless track bed exceeds the fastener adjustment amount, it is often necessary to chisel and then re-pour. However, the shutdown time of the operating line is limited, and the construction of chiseling and re-pouring the track bed needs to be completed within the skylight point.

[0003] Patent CN117468276A discloses "Fishbone-shaped track bed structure and its construction method for renewing existing ballastless track beds". It is to cast the entire track bed slab in-situ and transport it to the site as a folding structure for construction. Since the track bed slab is large in volume, it will face difficulties in construction transportation. When unfolding in the folded state, due to the large weight of the ballastless track slab, it increases the construction safety risk and construction difficulty. And for the in-situ casting of the entire track bed slab, the workload of chiseling and re-pouring is large. At the same time, the replacement range cannot be flexibly controlled, resulting in a long construction time, which is not conducive to operation safety and has poor economic benefits.

[0004] Therefore, there is an urgent need for a structure for ballastless track renewal and renovation that is small in weight, easy to transport, has a small workload of chiseling and re-pouring, and can control the replacement range. Summary of the Invention

[0005] The purpose of the utility model is to provide a sleeper structure for ballastless track renewal and renovation, so as to at least solve the problems of large weight, difficult transportation, large workload of chiseling and re-pouring, and inability to control the replacement range of the existing structure for ballastless track renewal and renovation.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A sleeper structure for ballastless track renewal and renovation, including sleeper support blocks and connecting hinges;

[0008] Two sleeper support blocks are symmetrically arranged, and a rail support is provided on the top surface of the sleeper support blocks;

[0009] The connecting hinge is arranged between two sleeper support blocks and connects the two sleeper support blocks into one body. When unfolded, the two sleeper support blocks form a complete articulated sleeper. When folded, the two sleeper support blocks are stacked vertically. When replacing a large area, several articulated sleepers are connected into an integral articulated sleeper frame;

[0010] The articulated sleeper is a reinforced concrete composite structure.

[0011] Furthermore, the connecting hinge includes a plurality of connecting rods and a rotating shaft. The connecting rods are respectively arranged on both sides of the rotating shaft. One end of the connecting rod is connected to the inner end face of the sleeper support block, and the other end is connected to the rotating shaft. The rotating shaft hinges the two sleeper support blocks into one body.

[0012] Furthermore, anchor bolts are arranged on the connecting rods, and the anchor bolts are embedded in the sleeper support blocks.

[0013] Furthermore, the connecting rods on both sides of the rotating shaft are arranged in a staggered manner.

[0014] Furthermore, the connecting rods on one side of the rotating shaft are respectively arranged near the two edges of the rotating shaft, and the connecting rods on the other side are all arranged in the middle of the rotating shaft.

[0015] Furthermore, the connecting rod includes truss reinforcement bars, steel pipes or angle steels.

[0016] Furthermore, the connecting rods on the same side of adjacent connecting hinges in the articulated sleeper frame are arranged in a staggered manner.

[0017] Furthermore, several articulated sleepers are connected into an integral articulated sleeper frame by using steel plates at the connecting rods.

[0018] Furthermore, the connecting rod and the steel plate are welded and connected.

[0019] Furthermore, grouting holes penetrating vertically are arranged on the sleeper support blocks.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] The present utility model provides a sleeper structure for the renewal and transformation of ballastless tracks. Adopting a reinforced concrete composite structure form of a sleeper support block and truss reinforcement bars, the weight of the articulated sleeper itself is reduced, and the sleeper replacement construction can be carried out without removing the rails, reducing the construction difficulty and construction risk; since the sleeper has a small volume and adopts a folding structure, it is convenient for transportation; and the present utility model can flexibly control the replacement range. When constructing in a small area, single articulated sleepers can be used, and when constructing in a large area, an articulated sleeper frame composed of several articulated sleepers can be used; at the same time, since only the sleepers are replaced in the present utility model, the amount of ballastless track bed concrete chiseling and pouring work can be effectively reduced, the construction investment can be greatly reduced, and the interference to operation and maintenance can be reduced, having good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0023] Figure 1 is a schematic plan view of multiple articulated sleepers;

[0024] Figure 2 is a schematic plan view of an articulated sleeper frame;

[0025] The labels in the figure are as follows:

[0026] 1 - articulated sleeper, 11 - rail support table, 12 - sleeper support block, 2 - connecting hinge, 21 - connecting rod, 22 - rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model 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 utility model more thorough and comprehensive.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment:

[0031] As Figure 1 shown, this embodiment provides a sleeper structure for the renewal and transformation of ballastless tracks, including a sleeper support block 12 and a connecting hinge 2. The connecting hinge 2 is connected between two sleeper support blocks 12 and connects the two sleeper support blocks 12 into one body. When unfolded, the two sleeper support blocks 12 form a complete articulated sleeper 1. When folded, the two sleeper support blocks 12 are stacked on top of each other. During storage and transportation, the connecting hinge 2 is in an open state. At this time, the left and right sleeper support blocks 12 are in contact with each other, and the top surfaces are parallel to each other. After arriving at the construction site, it is placed at the replacement position, and the connecting hinge 2 is gradually closed during the placement process and locked after being completely closed. At this time, the top surfaces of the left and right sleeper support blocks 12 are in the same plane.

[0032] This embodiment has a small volume and adopts a folding structure, thus facilitating transportation. When constructing in a small area, a single articulated sleeper 1 is used. When replacing a large area, several articulated sleepers 1 are connected into an integral articulated sleeper frame for overall transportation and replacement, which is convenient for improving the construction efficiency.

[0033] Furthermore, in order to reduce the weight of the articulated sleeper 1 itself, the articulated sleeper 1 is a reinforced concrete composite structure. And in this embodiment, the sleeper replacement construction is carried out without removing the rails, thereby reducing the construction difficulty and construction risk. There are two symmetrically arranged sleeper support blocks 12, and a rail support table 11 is provided on the top surface of the sleeper support block 12. In this embodiment, only the sleeper is replaced, thus greatly reducing the workload of chiseling and re-pouring, saving construction time, creating conditions for quickly resuming operation, and having obvious economic benefits.

[0034] Among them, the connecting hinge 2 includes four connecting rods 21 and a rotating shaft 22. The four connecting rods 21 are respectively arranged on both sides of the rotating shaft 22, with two connecting rods 21 on each side. One end of the connecting rod 21 is connected to the inner end face of the sleeper support block 12, and the other end is connected to the rotating shaft 22. The rotating shaft 22 hinges the two sleeper support blocks 12 into one body. In this embodiment, a reinforced concrete composite structure form of the sleeper support block 12 and the truss reinforcement is adopted, and the connecting rod 21 is a truss reinforcement. In other embodiments, the connecting rod 21 can also be a steel pipe or an angle steel.

[0035] The connecting rods 21 on both sides of the rotating shaft 22 are arranged in a staggered manner. The two connecting rods 21 on one side of the rotating shaft 22 are respectively welded and fixed at the two edges close to the rotating shaft 22, and the two connecting rods 21 on the other side are both welded and fixed at the middle of the rotating shaft 22.

[0036] Anchor bolts are arranged on the connecting rod 21 and are embedded in the sleeper support block 12, thereby fixing the connecting rod 21 and the sleeper support block 12.

[0037] Furthermore, as Figure 2 shown, when replacing a large area, several articulated sleepers 1 are connected into an integral articulated sleeper frame by using strip-shaped steel plates at the connecting rods 21 respectively, and the connecting rod 21 and the strip-shaped steel plate are welded and connected.

[0038] The connecting rods 21 on the same side of the adjacent connecting hinges 2 in the articulated sleeper frame are arranged in a staggered manner.

[0039] Vertical through grouting holes are arranged on the sleeper support blocks 12.

[0040] This embodiment uses the connecting hinge 2 to connect the two sleeper support blocks 12 together, which can replace the ballastless track without removing the rails, and the amount of concrete chiseling and pouring is small, which can greatly reduce the renewal and maintenance workload and difficulty of the existing ballastless track, reduce the project investment, thereby improving the construction efficiency and reducing the interference to the operation.

[0041] The installation process of this embodiment is as follows:

[0042] The prefabricated sleeper support blocks 12 are assembled into an articulated sleeper 1 through the connecting hinge 2, the concrete of the sleeper part is chiseled, and then the assembled articulated sleeper 1 is unfolded, finely adjusted to the corresponding spatial position, and poured through the grouting holes. After it is completely solidified, the fasteners on the original crosstie are removed and reinstalled on the crosstie 11 of the sleeper support block 12, and the replacement can be completed.

[0043] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not intended to limit the present utility model. For those skilled in the art to which the present utility model pertains, based on the idea of the present utility model, several simple deductions, deformations or substitutions can also be made.

Claims

1. A sleeper structure for the renewal and transformation of ballastless tracks, characterized in that: It includes sleeper support blocks (12) and connecting hinges (2); There are two symmetrically arranged sleeper support blocks (12), and a rail support table (11) is arranged on the top surface of the sleeper support blocks (12); The connecting hinge (2) is arranged between the two sleeper support blocks (12) and connects the two sleeper support blocks (12) into one body. When unfolded, the two sleeper support blocks (12) form a complete articulated sleeper (1). When folded, the two sleeper support blocks (12) are stacked on top of each other. When replacing a large area, several articulated sleepers (1) are connected into an integral articulated sleeper frame; The articulated sleeper (1) is a reinforced concrete composite structure.

2. The sleeper structure for ballastless track renewal and reconstruction according to claim 1, characterized in that: The connecting hinge (2) includes a plurality of connecting rods (21) and a rotating shaft (22). The connecting rods (21) are respectively arranged on both sides of the rotating shaft (22). One end of the connecting rod (21) is connected to the inner end face of the sleeper support block (12), and the other end is connected to the rotating shaft (22). The rotating shaft (22) hinges the two sleeper support blocks (12) into one body.

3. The sleeper structure for ballastless track renewal and reconstruction according to claim 2, characterized in that: Anchor nails are arranged on the connecting rod (21), and the anchor nails are pre-embedded in the sleeper support block (12).

4. The sleeper structure for ballastless track renewal and reconstruction according to claim 2, characterized in that: The connecting rods (21) on both sides of the rotating shaft (22) are arranged in a staggered manner.

5. The sleeper structure for ballastless track renewal and reconstruction according to claim 2, characterized in that: The connecting rods (21) on one side of the rotating shaft (22) are respectively arranged near the two edges of the rotating shaft (22), and the connecting rods (21) on the other side are all arranged in the middle of the rotating shaft (22).

6. The sleeper structure for ballastless track renewal and reconstruction according to claim 2, characterized in that: The connecting rod (21) includes truss reinforcement, steel pipe or angle steel.

7. The sleeper structure for ballastless track renewal and reconstruction according to claim 2, characterized in that: The connecting rods (21) on the same side of the adjacent connecting hinges (2) in the articulated sleeper frame are arranged in a staggered manner.

8. The sleeper structure for ballastless track renewal and reconstruction according to claim 2, characterized in that: Several articulated sleepers (1) are connected into an integral articulated sleeper frame by using steel plates at the connecting rods (21).

9. The sleeper structure for ballastless track renewal and reconstruction according to claim 8, characterized in that: The connecting rod (21) and the steel plate are welded and connected.

10. The sleeper structure for ballastless track renewal and reconstruction according to claim 1, characterized in that: Vertical grouting holes are arranged on the sleeper support block (12).

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