Rack rail concrete sleeper

Abstract

The utility model discloses a rack rail concrete sleeper which comprises a foundation structure, a sleeper body is arranged on the foundation structure, and an embedded part is arranged in the sleeper body and used for connecting the sleeper body with the foundation structure of a railway line. Steel rails are arranged at the two ends of the foundation structure, the steel rails and the foundation structure are tightly connected through a fastener system, a rack rail body is arranged in the middle of the foundation structure, and the rack rail body and the foundation structure are tightly connected through a fastener system. According to the rack rail concrete sleeper, the embedded structure on the sleeper is tightly matched with a specially-made fastener system, stable longitudinal and transverse constraint is formed, displacement of the sleeper under the load effect of a train is effectively prevented, meanwhile, due to the application of a high-strength concrete material, the compression resistance, fracture resistance and abrasion resistance of the sleeper are improved, the service life is prolonged, and the service life of the sleeper is prolonged. The fastener system is simple in structure and easy to install and maintain, the maintenance cost is reduced, the toothed rail body is subjected to special treatment, and the abrasion resistance is improved.

Description

Technical Field

[0001] This utility model relates to the field of railway engineering technology, specifically to a toothed rail concrete sleeper. Background Technology

[0002] Traditional railway sleepers are mostly made of wood, steel, or concrete. Among them, concrete sleepers are widely used due to their good durability and stability. However, with the rapid development of railway transportation, higher requirements have been placed on the load-bearing capacity and stability of the track structure. When bearing train loads, traditional concrete sleepers are prone to longitudinal and lateral displacement, which affects the geometry and smoothness of the track, and thus affects the stability and safety of train operation.

[0003] To overcome the aforementioned shortcomings, researchers both domestically and internationally have made numerous improvements and innovations to railway sleeper structures. Among these, the rack sleeper, as a novel structure, effectively improves the longitudinal and lateral restraint forces of the track and reduces sleeper displacement through the cooperation of the toothed structure on the sleeper and the fastening system. Rack railways are a type of railway with strong climbing ability. A special rack, usually a toothed one, is laid in the middle of the track. Correspondingly, the locomotives or EMUs running on rack railways are equipped with one or more gears that mesh with the rack. When rack railway vehicles climb slopes, the meshing of the gears with the rack overcomes the problem of insufficient adhesion between the steel wheel and the steel rail, thus enabling them to climb steeper slopes. However, existing rack sleepers still have some shortcomings in structural design and material selection, such as easy wear of the toothed structure, complex fastening system and high maintenance costs, and relatively large overall weight of the sleeper, which limit their widespread application in practical engineering.

[0004] Therefore, designing a concrete sleeper suitable for cogwheel passenger railways that meets the requirements of steep gradients and insufficient adhesion in rainy or snowy weather, in order to improve the safety of vehicle operation, is an urgent issue to be considered in the development of cogwheel railways. Utility Model Content

[0005] The purpose of this utility model is to provide a toothed concrete sleeper to solve the problems mentioned in the background art, such as the toothed structure of the current toothed sleepers on the market being prone to wear, the fastening system being complex and the maintenance cost being high, and the overall weight of the sleeper being too large, which limits their widespread application in actual engineering.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a toothed rail concrete sleeper, comprising a foundation structure, a sleeper body disposed on the foundation structure, and an embedded part disposed within the sleeper body for connecting the sleeper body to the foundation structure of the railway line;

[0007] The foundation structure has steel rails at both ends, which are tightly connected to the foundation structure via a fastening system. A toothed rail body is located in the middle of the foundation structure, which is also tightly connected to the foundation structure via a fastening system.

[0008] Preferably, the gear body includes a fixing member, a slot, a rack, a connector, bolts, and a reinforcing plate. The fixing member has a slot on its side, and the rack is embedded in the slot. A connector passes through the rack and the fixing member. The connector and the fixing member are fixed together by bolts. A reinforcing plate is connected to the upper side of the fixing member by bolts. The reinforcing plate and the rack are fixed together by bolts.

[0009] Preferably, the fastening system includes a fastening plate and fasteners. One end of the fastening plate is tightly fitted to the rail and the rack body, and the other end of the fastening plate is connected to the sleeper body by fasteners.

[0010] Preferably, the rack and the fixing member are connected by a connector, which has an "n" shaped structure.

[0011] Preferably, the reinforcing plates are distributed at the splicing ends of two adjacent fasteners.

[0012] Preferably, the fastener is threadedly connected to the fastener plate and the sleeper body, and the fastener plate has a "Z" shaped structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The toothed concrete sleeper utilizes the pre-embedded structure on the sleeper and the special fastener system to form a stable longitudinal and lateral constraint, effectively preventing the sleeper from displaced under train load. At the same time, the application of high-strength concrete material improves the sleeper's compressive strength, flexural strength and wear resistance, and extends its service life.

[0015] (2) The toothed rail concrete sleeper has a simple fastener system structure that is easy to install and maintain, reducing maintenance costs. At the same time, the toothed rail body has undergone special treatment to improve its wear resistance and extend its service life.

[0016] (3) The toothed rail concrete sleeper is made of high-strength concrete material, which improves the sleeper's compressive strength, bending strength and wear resistance, and meets the high load-bearing requirements of track structure in high-speed railway, heavy-haul railway and urban rail transit.

[0017] (4) The shape and size of the toothed concrete sleeper can be designed according to actual needs to meet the requirements of different railway lines. At the same time, the design of the embedded parts fully considers the bearing capacity and stability requirements of the foundation structure and is suitable for various complex geological conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the sleeper body structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the rack structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the rail structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the toothed rail body in its spliced ​​state.

[0024] Figure 7 This is a cross-sectional view of the fastener of this utility model.

[0025] In the diagram: 1. Basic structure; 2. Embedded parts; 3. Sleeper body; 4. Rail; 5. Gear rack body; 501. Fixing parts; 502. Slots; 503. Gear rack; 504. Connecting parts; 505. Bolts; 506. Reinforcing plates; 6. Fastening system; 601. Fastening plate; 602. Fasteners. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 The present invention provides the following technical solution: a toothed concrete sleeper, comprising a foundation structure 1, a sleeper body 3 disposed on the foundation structure 1, and an embedded part 2 disposed inside the sleeper body 3 for connecting the sleeper body 3 to the foundation structure 1 of the railway line; rails 4 are disposed at both ends of the foundation structure 1, and the rails 4 are tightly connected to the foundation structure 1 by a fastening system 6; a toothed rail body 5 is disposed in the middle of the foundation structure 1, and the toothed rail body 5 is tightly connected to the foundation structure 1 by a fastening system 6.

[0028] Furthermore, the rack body 5 includes a fixing member 501, a slot 502, a rack 503, a connector 504, a bolt 505, and a reinforcing plate 506. The fixing member 501 has a slot 502 on its side, and the rack 503 is embedded in the slot 502. The connector 504 passes through between the rack 503 and the fixing member 501. The connector 504 is fixed to the fixing member 501 by the bolt 505. The upper side of the fixing member 501 is connected to the reinforcing plate 506 by the bolt 505. The reinforcing plate 506 is fixed to the rack 503 by the bolt 505.

[0029] Furthermore, the rack 503 and the fixing member 501 are connected by a connector 504, which has an "n" shaped structure.

[0030] Furthermore, the reinforcing plates 506 are distributed at the splicing ends of two adjacent fasteners 501;

[0031] Furthermore, the fastening system 6 includes a fastening plate 601 and a fastener 602. One end of the fastening plate 601 is tightly attached to the rail 4 and the rack body 5, and the other end of the fastening plate 601 is connected to the sleeper body 3 by the fastener 602.

[0032] Furthermore, the fastener 602 is threadedly connected to the fastener plate 601 and the sleeper body 3, and the fastener plate 601 has a "Z" shaped structure;

[0033] Specifically, the sleeper body 3 is cast from high-strength concrete and is rectangular in shape. Its length, width, and height are designed according to actual needs. The rack body 5 is located in the middle of the sleeper body 3. The rack 503 is cast using a mold to form a regular tooth shape. The design of the rack body 5 fully considers the distribution and transmission characteristics of train loads. Parameters such as tooth height, tooth pitch, and tooth angle of the rack body 5 have been optimized to effectively improve the longitudinal and lateral restraint forces of the track. Simultaneously, the surface of the rack body 5 undergoes special treatments, such as sandblasting, shot blasting, or carburizing, which improves wear resistance and extends service life. The fastening system... 6 is used to tightly connect the sleeper body 3 and the rail 4, as well as the sleeper body 3 and the rack rail body 5. The fastening system 6 consists of fastening plates 601 and fasteners 602. The rail 4 is placed at both ends of the sleeper body 3, and the rack rail body 5 is placed in the middle of the sleeper body 3. The fastening plates 601 can be tightly fitted to the sides of the rail 4 and the rack rail body 5 respectively, and the fasteners 602 are threaded to the connection between the fastening plates 601 and the sleeper body 3 to fix the fastening plates 601 and the sleeper body 3, thereby completing the assembly of the rail 4 and the rack rail body 5. The embedded part 2 is set in the sleeper body 3 for connection with the railway line foundation structure 1.

[0034] The rack body 5 consists of a fixing member 501, a slot 502, a rack 503, a connector 504, bolts 505, and a reinforcing plate 506. The rack 503, cast by a mold, is inserted into the slot 502. Then, the connector 504 passes through the fixing member 501 and the rack 503 in sequence to limit its position. Then, the bolts 505 are used to lock the connector 504 to the fixing member 501, thus assembling the rack 503. When splicing the rack body 5, the reinforcing plate 506 can be fixed at the splicing end of the rack body 5 with bolts 505, and the reinforcing plate 506 and the rack 503 can be fixed with bolts 505 to reinforce the splicing end of the rack body 5. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A toothed concrete sleeper, comprising a foundation structure (1), characterized in that: The basic structure (1) is provided with a sleeper body (3), and the sleeper body (3) is provided with an embedded part (2) for connecting the sleeper body (3) with the basic structure (1) of the railway line; The base structure (1) is provided with rails (4) at both ends, and the rails (4) are tightly connected to the base structure (1) by fastening system (6). The base structure (1) is provided with a toothed rail body (5) in the middle, and the toothed rail body (5) is tightly connected to the base structure (1) by fastening system (6).

2. A toothed concrete sleeper according to claim 1, characterized in that: The gear body (5) includes a fixing member (501), a slot (502), a rack (503), a connector (504), a bolt (505), and a reinforcing plate (506). The fixing member (501) has a slot (502) on its side, and the rack (503) is embedded in the slot (502). The connector (504) passes through the rack (503) and the fixing member (501). The connector (504) is fixed to the fixing member (501) by the bolt (505). The upper side of the fixing member (501) is connected to the reinforcing plate (506) by the bolt (505). The reinforcing plate (506) is fixed to the rack (503) by the bolt (505).

3. A toothed concrete sleeper according to claim 1, characterized in that: The fastening system (6) includes a fastening plate (601) and a fastener (602). One end of the fastening plate (601) is tightly attached to the rail (4) and the rack body (5), and the other end of the fastening plate (601) is connected to the sleeper body (3) by the fastener (602).

4. A toothed concrete sleeper according to claim 2, characterized in that: The rack (503) and the fixing member (501) are connected by a connector (504), which has an "n" shaped structure.

5. A toothed concrete sleeper according to claim 2, characterized in that: The reinforcing plates (506) are distributed at the splicing ends of two adjacent fasteners (501).

6. A toothed concrete sleeper according to claim 3, characterized in that: The fastener (602) is threaded onto the fastener plate (601) and the sleeper body (3), and the fastener plate (601) has a "Z" shaped structure.

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