Improved prestressed concrete sleeper

Abstract

The utility model relates to the technical field of concrete sleepers, and provides an improved prestressed concrete sleeper which comprises a prestressed concrete sleeper body, bearing blocks are arranged on the two sides of the prestressed concrete sleeper body, and an adjusting mechanism is arranged on one side of each bearing block. A limiting mechanism is arranged in the prestressed concrete sleeper body; the adjusting mechanism comprises two threaded rods which are symmetrically distributed, the threaded rods and the prestressed concrete sleeper body are rotationally connected through bearings, a threaded groove is formed in the bottom of one side of the bearing block, and the inner wall of the threaded groove is connected with the threaded rods through threads. The hexagonal clamping head is located in the rotating groove and rotates through an electric drill, at the moment, the threaded rod can rotate, the distance between the bearing block and the prestressed concrete sleeper body can be adjusted through rotation of the threaded rod, and therefore the labor intensity of workers can be reduced, and the effect of facilitating operation of the workers is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal roads, and particularly relates to an improved prestressed concrete sleeper. Background Technique

[0002] A concrete sleeper is a concrete product used as a railway sleeper. It plays an important "foundation" role in railway transportation. It not only supports the rail, but also maintains the position of the rail, and also transmits the huge pressure brought by the train to the rail bed to the ballast bed. The production process of the concrete sleeper includes mixing cement, sand, stone, water and additives in a certain proportion to form a mixture, and then injecting it into a combined mold equipped with steel wires or steel bars and sleeper fittings, and adopting processes such as vibration molding or load vibration molding, steam curing, releasing steel wires or steel bars, and cutting the ends of the sleeper. There is a need for an improved prestressed concrete sleeper.

[0003] It is known that the Chinese publicly authorized utility model: (Publication No.: CN213507827U) discloses a prestressed concrete sleeper, including: a sleeper body and threaded steel wires. The threaded steel wires are arranged inside the sleeper body, and the threaded steel wires are not exposed at the ends of the sleeper body. The number of threaded steel wires is four or six, and both ends of each threaded steel wire are tensioned by a connecting rod.

[0004] However, in the implementation of the related technology, it is found that the above device has the following problems: In the prior art during use, the sleeper body is an integral structure and is relatively heavy. If the installation position is inaccurate, it is necessary for the staff to move and carry the whole, which increases the labor intensity of the staff and is not convenient for the staff to operate. There is a need for an improved prestressed concrete sleeper. Content of the Utility Model

[0005] The utility model provides an improved prestressed concrete sleeper, which solves the problem that in the related technology, it is necessary for the staff to move and carry the whole, increasing the labor intensity of the staff and being inconvenient for the staff to operate.

[0006] The technical solution of the utility model is as follows: An improved prestressed concrete sleeper includes a prestressed concrete sleeper body. Bearing blocks are arranged on both sides of the prestressed concrete sleeper body. An adjusting mechanism is arranged on one side of the bearing block. A limiting mechanism is arranged inside the prestressed concrete sleeper body;

[0007] The adjusting mechanism includes two symmetrically distributed threaded rods. The threaded rods are rotatably connected to the prestressed concrete sleeper body through bearings. A threaded groove is opened at the bottom of one side of the bearing block. The inner wall of the threaded groove is threadedly connected to the threaded rod. A rotating block is fixedly connected to one side of the threaded rod, which can reduce the labor intensity of the staff and achieve the effect of facilitating the operation of the staff.

[0008] Preferably, a storage groove communicating with the inner wall of the threaded groove is formed at the bottom of one side of the bearing block close to the prestressed concrete sleeper body, and the bearing of the threaded rod forms a sliding fit with the inner wall of the storage groove. The arrangement of the storage groove can store the bearing part of the threaded rod and reduce the distance between the prestressed concrete sleeper body and the bearing block.

[0009] Preferably, a plurality of uniformly distributed limiting grooves are formed on the side of the bearing block away from the prestressed concrete sleeper body. The limiting grooves are arranged in a circular arrangement around the threaded rod. A limiting port corresponding to the limiting groove is formed on one side of the rotating block. A limiting rod is connected to the inner walls of the limiting port and the limiting groove by threads. The arrangement of the limiting rod can rotate from the inner wall of the limiting port into the limiting groove to fix the rotating block.

[0010] Preferably, rotating grooves are formed on the opposite sides of the two rotating blocks. The arrangement of the rotating grooves allows the staff to use an electric drill to fit the chuck into the rotating grooves. At this time, starting the electric drill facilitates the staff to adjust the distance between the prestressed concrete sleeper body and the bearing block.

[0011] Preferably, the limiting mechanism includes two positioning plates, which are respectively fixedly connected to the opposite sides of the two bearing blocks. Positioning grooves are formed on both sides of the prestressed concrete sleeper body. The inner wall of the positioning groove forms a sliding fit with the positioning plate. The arrangement of the positioning plate can slide in the inner wall of the positioning groove to improve the connection stability between the prestressed concrete sleeper body and the bearing block.

[0012] Preferably, a plurality of uniformly distributed connecting grooves are formed on the bottom inner wall of the positioning groove. A connecting spring is fixedly connected to the bottom inner wall of the connecting groove. The top of the connecting spring is fixedly connected with a connecting block that forms a sliding fit with the inner wall of the connecting groove. The top of the connecting block is in an arc shape. The arrangement of the connecting block can slide in the inner wall of the connecting groove under the elastic force of the connecting spring and slide into the positioning groove through the inner wall of the connecting groove to improve the support for the top inner wall of the positioning groove.

[0013] The working principle and beneficial effects of the present utility model are as follows:

[0014] By using an electric drill to place the hexagonal chuck in the rotating groove and rotate it, the threaded rod can be rotated at this time. The rotation of the threaded rod can adjust the distance between the bearing block and the prestressed concrete sleeper body. Therefore, the labor intensity of the staff can be reduced, and the effect of facilitating the operation of the staff can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0016] Figure 1 Schematic diagram of the three-dimensional structure proposed by the present utility model;

[0017] Figure 2 Schematic diagram of the partial sectional structure proposed by the present utility model;

[0018] Figure 3 is Figure 2 Enlarged schematic diagram of the structure at position A in

[0019] Figure 4 is Figure 2 Enlarged schematic diagram of the structure at position B in

[0020] In the figure: 1, prestressed concrete sleeper body; 2, bearing block; 3, threaded rod; 4, threaded groove; 5, storage groove; 6, limiting groove; 7, limiting port; 8, limiting rod; 9, rotating groove; 11, positioning plate; 12, positioning groove; 13, connecting groove; 14, connecting spring; 15, connecting block; 16, rotating block. Specific embodiments

[0021] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figure 1 - Figure 4 , an improved prestressed concrete sleeper, including a prestressed concrete sleeper body 1, bearing blocks 2 are arranged on both sides of the prestressed concrete sleeper body 1, an adjusting mechanism is arranged on one side of the bearing block 2, and a limiting mechanism is arranged in the prestressed concrete sleeper body 1;

[0024] The adjusting mechanism includes two symmetrically distributed threaded rods 3, the threaded rods 3 are rotatably connected to the prestressed concrete sleeper body 1 through bearings, a threaded groove 4 is opened at the bottom of one side of the bearing block 2, the inner wall of the threaded groove 4 is threadedly connected to the threaded rod 3, and a rotating block 16 is fixedly connected to one side of the threaded rod 3.

[0025] An improved prestressed concrete sleeper provided by the utility model, when in use, rotate the limiting rod 8 to separate the limiting rod 8 from the inner wall of the limiting opening 7 and the inner wall of the limiting groove 6, and then rotate the threaded rod 3 or use an electric drill to make the hexagonal chuck located in the rotating groove 9 and rotate. At this time, the threaded rod 3 can be rotated. The rotation of the threaded rod 3 can adjust the distance between the bearing block 2 and the prestressed concrete sleeper body 1. When the distance between the bearing block 2 and the prestressed concrete sleeper body 1 changes, the positioning plate 11 can slide in the inner wall of the positioning groove 12. The positioning plate 11 can improve the connection stability between the bearing block 2 and the prestressed concrete sleeper body 1. At the same time, the connecting block 15 slides into the positioning groove 12 along the inner wall of the connecting groove 13 under the elastic force of the connecting spring 14, and can support the top inner wall of the positioning groove 12 to a certain extent. Therefore, the labor intensity of the staff can be reduced, and the effect of facilitating the operation of the staff can be achieved.

[0026] Further, a storage groove 5 communicating with the inner wall of the threaded groove 4 is opened at the bottom of one side of the bearing block 2 close to the prestressed concrete sleeper body 1, and the bearing of the threaded rod 3 forms a sliding fit with the inner wall of the storage groove 5.

[0027] Specifically, the storage groove 5 can store the bearing part of the threaded rod 3, and the distance between the prestressed concrete sleeper body 1 and the bearing block 2 can be reduced.

[0028] Further, a plurality of uniformly distributed limiting grooves 6 are opened on one side of the bearing block 2 away from the prestressed concrete sleeper body 1. The limiting grooves 6 are arranged in a circular arrangement around the threaded rod 3. A limiting opening 7 corresponding to the limiting groove 6 is opened on one side of the rotating block 16, and a limiting rod 8 is connected to the inner walls of the limiting opening 7 and the limiting groove 6 by threads.

[0029] Specifically, the limiting rod 8 can be rotated into the limiting groove 6 through the inner wall of the limiting opening 7, and the rotating block 16 can be fixed.

[0030] Further, rotating grooves 9 are opened on the opposite sides of the two rotating blocks 16.

[0031] Specifically, through the rotating groove 9, the staff can use an electric drill to cooperate with the chuck to be clamped into the rotating groove 9. At this time, starting the electric drill can facilitate the staff to adjust the distance between the prestressed concrete sleeper body 1 and the bearing block 2.

[0032] Embodiment 2

[0033] Based on Embodiment 1, this embodiment includes: The limiting mechanism includes two positioning plates 11, and the two positioning plates 11 are respectively fixedly connected to the opposite sides of the two bearing blocks 2. Positioning grooves 12 are provided on both sides of the prestressed concrete sleeper body 1. The inner wall of the positioning groove 12 forms a sliding fit with the positioning plate 11. A number of uniformly distributed connecting grooves 13 are provided on the bottom inner wall of the positioning groove 12. A connecting spring 14 is fixedly connected to the bottom inner wall of the connecting groove 13. The top of the connecting spring 14 is fixedly connected to a connecting block 15 that forms a sliding fit with the inner wall of the connecting groove 13. The top of the connecting block 15 has an arc-shaped structure.

[0034] The technical solution provided by this embodiment is: The positioning plate 11 can slide in the inner wall of the positioning groove 12, which can improve the connection stability between the prestressed concrete sleeper body 1 and the bearing block 2. The connecting block 15 can slide in the inner wall of the connecting groove 13 under the elastic force of the connecting spring 14, and can slide from the inner wall of the connecting groove 13 into the positioning groove 12, which can improve the support for the top inner wall of the positioning groove 12.

[0035] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An improved prestressed concrete sleeper, comprising a prestressed concrete sleeper body (1), wherein bearing blocks (2) are arranged on both sides of the prestressed concrete sleeper body (1), characterized in that: An adjustment mechanism is provided on one side of the bearing block (2), and a limiting mechanism is provided inside the prestressed concrete sleeper body (1); The adjustment mechanism comprises two symmetrically distributed threaded rods (3), the threaded rods (3) and the prestressed concrete sleeper body (1) are rotatably connected via bearings, a threaded groove (4) is provided at the bottom of one side of the bearing block (2), the inner wall of the threaded groove (4) is connected to the threaded rod (3) via threads, and a rotating block (16) is fixedly connected to one side of the threaded rod (3).

2. The improved prestressed concrete sleeper according to claim 1, characterized in that: A receiving groove (5) connected to the inner wall of the threaded groove (4) is provided at the bottom of one side of the bearing block (2) close to the prestressed concrete sleeper body (1), and the bearing of the threaded rod (3) forms a sliding fit with the inner wall of the receiving groove (5).

3. The improved prestressed concrete sleeper according to claim 2, characterized in that: A plurality of evenly distributed limiting grooves (6) are provided on a side of the bearing block (2) away from the prestressed concrete sleeper body (1), the limiting grooves (6) are arranged in a circle around the threaded rod (3), a limiting opening (7) corresponding to the limiting groove (6) is provided on one side of the rotating block (16), and the inner wall of the limiting opening (7) and the inner wall of the limiting groove (6) are connected to the limiting rod (8) via threads.

4. The improved prestressed concrete sleeper according to claim 3, characterized in that: A rotating groove (9) is provided on one side of the two rotating blocks (16) that is away from each other.

5. The improved prestressed concrete sleeper according to claim 1, characterized in that: The limiting mechanism comprises two positioning plates (11), the two positioning plates (11) are respectively fixedly connected to opposite sides of two bearing blocks (2), and positioning grooves (12) are provided on both sides of the prestressed concrete sleeper body (1), and the inner walls of the positioning grooves (12) form a sliding fit with the positioning plates (11).

6. The improved prestressed concrete sleeper according to claim 5, characterized in that: The bottom inner wall of the positioning groove (12) is provided with a plurality of evenly distributed connection grooves (13); the bottom inner wall of the connection groove (13) is fixedly connected with a connection spring (14); the top of the connection spring (14) is fixedly connected with a connection block (15) that forms a sliding fit with the inner wall of the connection groove (13); the top of the connection block (15) is in an arc-shaped structure.

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