A precast beam maintenance device for highway bridges

Abstract

This utility model discloses a precast beam curing device for highway bridges, relating to the field of precast beam curing technology. It includes a curing box, a precast beam body, a water spraying assembly, and a film covering assembly. A support seat is slidably mounted on the curing box. The precast beam body is placed on and engaged with the support seat. The water spraying assembly is located inside the curing box and includes a first water spraying mechanism for spraying water onto the upper part of the precast beam body and a second water spraying mechanism for spraying water onto the bottom of the precast beam body. The film covering assembly is mounted on the curing box and located on one side of the precast beam body. This utility model can spray water simultaneously from multiple directions, including the top, sides, and bottom of the precast beam body, reducing uneven water evaporation. It also provides sufficient moisture to the concrete, ensuring the smooth progress of the hydration reaction, which helps to form more hydration products, fills the pores inside the concrete, and improves the density and strength of the concrete.

Description

Technical Field

[0001] This utility model relates to the field of precast beam maintenance, and in particular to a precast beam maintenance device for highway bridges. Background Technology

[0002] Precast beams for highway bridges refer to reinforced concrete or prestressed concrete beams that are prefabricated in a factory or prefabrication yard and then transported to the bridge construction site for installation. They are a commonly used structural component in highway bridge construction, offering advantages such as improved construction efficiency, guaranteed quality, and reduced costs.

[0003] Traditional curing methods often fail to achieve uniform humidity control across all parts of precast beams. In high-temperature, dry, or windy conditions, the rate of moisture evaporation accelerates, and traditional curing methods may not be able to replenish sufficient moisture in time. This leads to incomplete hydration of the concrete, resulting in a water-deficient state inside the concrete. Consequently, it cannot form enough hydration products to fill the pores, reducing the density and strength of the concrete. Furthermore, traditional curing methods cannot effectively prevent direct contact between air and the concrete surface. Airflow accelerates the evaporation of moisture from the concrete surface, thereby reducing the early strength and later durability of the concrete. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies that cannot provide all-round water spraying for precast beam maintenance, and to propose a precast beam maintenance device for highway bridges.

[0005] To address the problems existing in the prior art, this utility model adopts the following technical solution: a precast beam maintenance device for highway bridges, comprising a maintenance box, a support base, a water spraying assembly, and a film covering assembly. The support base is slidably disposed within the maintenance box, and the precast beam body is placed on the support base and engaged with it. The water spraying assembly is disposed within the maintenance box and includes a water storage tank and a concentrically arranged arc-shaped fixing frame and guide frame. The fixing frame is fixedly disposed within the maintenance box and located above the precast beam body. Multiple first nozzles are distributed on the inner side of the fixing frame. The guide frame is slidably nested within the middle of the fixing frame and initially overlaps with the fixing frame. Multiple first nozzles are distributed on the inner side of the guide frame. Multiple second nozzles are distributed and arranged, and the first and second nozzles are connected to the water storage tank through pipelines; toothed blocks are arranged circumferentially on the outer side of the guide frame; a drive motor is installed on the curing box, and the output end of the drive motor is connected to a transmission shaft. The transmission shaft is rotatably mounted on the curing box, and a gear is provided on the transmission shaft to mesh with the toothed blocks. The drive motor drives the guide frame to move along an arc trajectory through the transmission shaft and gear, and after passing through the through hole provided on the support base, it forms a closed annular frame around the precast beam body together with the fixing frame; the film covering assembly is set on the curing box and located on one side of the precast beam body. In use, it is used to cover the surface of the precast beam body with film.

[0006] Furthermore, the water storage tank is installed on the inner wall of the top of the maintenance tank and is connected to an external water source.

[0007] Furthermore, the bottom of the maintenance box is provided with two sets of first slide rails that slide in cooperation with the support base.

[0008] Furthermore, the inner end of the guide frame is provided with a slider, and the inner side of the fixed frame is provided with an arc-shaped guide groove that cooperates with the slider.

[0009] Furthermore, the support base is provided with a through groove for water to flow into contact with the bottom of the precast beam body, and the distribution position of the through groove corresponds to the moving path of the second nozzle.

[0010] Furthermore, the first nozzle is equidistantly distributed along the arc of the fixed frame, and the second nozzle is equidistantly distributed along the arc of the guide frame.

[0011] Furthermore, the film-coating assembly includes a second slide rail, a support column, and a film roll; the second slide rail is arranged around the outside of the support base; the support column is slidably disposed on the second slide rail; and the film roll is sleeved on the support column and located on the side of the precast beam body.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, by setting a water spraying component, water can be sprayed simultaneously from multiple directions such as the top, sides and bottom of the precast beam body. The all-round water spraying can better control the humidity environment on the surface of the precast beam body, reduce the unevenness of water evaporation, and provide sufficient water for the concrete to ensure the smooth progress of the hydration reaction, which helps to form more hydration products, fill the pores inside the concrete, and improve the density and strength of the concrete. 2. In this utility model, by setting a film covering component, a protective film can be formed on the surface of the precast beam body, which effectively blocks the direct contact between air and concrete surface, ensures that the concrete has enough moisture for hydration reaction, and improves early strength and later durability. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a side view of the present invention.

[0016] Figure 3This is a schematic diagram of the coating component structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the water spray component structure of this utility model.

[0018] Figure 5 This is a cross-sectional view of the present invention.

[0019] The components in the diagram are numbered as follows: 1. Curing box; 2. First slide rail; 3. Support base; 4. Precast beam body; 5. Second slide rail; 6. Water storage tank; 7. Fixing frame; 8. Fixing plate; 9. First nozzle; 10. Through groove; 11. Support column; 12. Film roll; 13. Drive motor; 14. Transmission shaft; 15. Gear; 16. Guide frame; 17. Tooth block; 18. Second nozzle; 19. Slider. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] This embodiment provides a precast beam maintenance device for highway bridges. (See also...) Figures 1-5 Specifically, the system includes a curing box 1, a support base 3, a precast beam body 4, a water spraying assembly, and a film covering assembly. The support base 3 is slidably disposed at the bottom of the curing box 1, and the curing box 1 is provided with two sets of first slide rails 2 for the support base 3 to slide on. The precast beam body 4 is placed on the support base 3 and is engaged with the support base 3. The water spraying assembly is disposed inside the curing box 1 and includes a water storage tank 6 and a first water spraying mechanism for spraying water onto the upper part of the precast beam body 4 and a second water spraying mechanism for spraying water onto the bottom of the precast beam body 4. The water storage tank 6 is disposed on the inner wall of the top of the curing box 1 and is connected to an external water source. The first water spraying mechanism includes a fixing frame 7 and a first nozzle 9. The fixing frame 7 is disposed at the bottom of the water storage tank 6. Multiple sets of the first nozzles 9 are disposed on both sides of the fixing frame 7 and are connected to the water storage tank 6 through pipelines. The first nozzles 9 are located above the precast beam body 4, and water spraying can be used to cure the upper area of ​​the precast beam body 4 through the first nozzles 9.

[0022] The second water spraying mechanism includes a guide frame 16, a toothed block 17, and a second nozzle 18. The fixed frame 7 and the guide frame 16 are concentric arc-shaped structures. The guide frame 16 is slidably nested in the middle of the fixed frame 7 and initially overlaps with the fixed frame 7. A slider 19 is provided at the inner end of the guide frame 16, and an arc-shaped guide groove that cooperates with the slider 19 is opened on the inner side of the fixed frame 7. Multiple sets of the second nozzles 18 are all arranged on the guide frame 16 and are connected to the water storage tank 6 through pipelines. The toothed block 17 is circumferentially arranged on the outer arc-shaped surface of the guide frame 16. A drive motor 13 is installed on the curing box 1, and the output end of the drive motor 13 is connected to a transmission shaft 14. A fixing plate 8 is provided on the inner wall of the curing box 1. The transmission shaft 14 is rotatably connected to the fixing plate 8. A gear 15 that meshes with the toothed block 17 is provided on the transmission shaft 14. The drive motor 13 drives the guide frame 16 to move along the arc-shaped trajectory through the transmission shaft 14 and the gear 15. After passing through the through hole provided on the support base 3, it forms a closed annular frame around the precast beam body 4 together with the fixing frame 7, so that the second nozzles 18 are distributed in the bottom area of ​​the precast beam body 4. The first nozzles 9 are equidistantly distributed along the arc of the fixing frame 7, and the second nozzles 18 are equidistantly distributed along the arc of the guide frame 16. A through groove 10 is provided on the support base 3 for water to contact the bottom of the precast beam body 4. The distribution position of the through groove 10 corresponds to the movement path of the second nozzles 18, and the bottom of the precast beam body 4 is sprayed with water for curing through the second nozzles 18.

[0023] The film-coating component is mounted on the curing box 1 and located on one side of the precast beam body 4. In use, it is used to coat the surface of the precast beam body 4 with a film. In specific implementation processes, such as... Figure 3 As shown, the coating assembly includes a second slide rail 5, a support column 11, and a film roll 12. The second slide rail 5 is located outside the support base 3 and is a U-shaped rail. The support column 11 is slidably mounted on the second slide rail 5. The film roll 12 is sleeved on the support column 11 and located on the side of the precast beam body 4. With the use of the second slide rail 5, the support column 11 and the film roll 12 can move around the precast beam body 4, thereby covering the surface of the precast beam body 4, reducing moisture evaporation, and significantly reducing the amount of water required during the curing process.

[0024] Specifically, the working principle and operation method of this utility model are as follows: When in use, under the action of the first nozzle 9, the second nozzle 18 and the drive motor 13, water can be sprayed simultaneously from multiple directions such as the top, sides and bottom of the precast beam body 4, ensuring that all parts of the concrete can be uniformly replenished with water. Furthermore, under the action of the film roll 12, it can effectively block the direct contact between air and the concrete surface, thereby greatly reducing water evaporation.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A highway bridge precast beam maintenance device, characterized in that, The system includes a curing box (1), a support base (3), a water spraying assembly, and a film covering assembly. The support base (3) is slidably disposed inside the curing box (1), and the precast beam body (4) is placed on the support base (3) and engaged with it. The water spraying assembly is disposed inside the curing box (1) and includes a water storage tank (6) and a concentric arc-shaped fixing frame (7) and a guide frame (16). The fixing frame (7) is fixedly disposed inside the curing box (1) and located on the upper part of the precast beam body (4). Multiple first nozzles (9) are distributed on the inner side of the fixing frame (7). The guide frame (16) is slidably nested in the middle of the fixing frame (7) and initially overlaps with the fixing frame (7). Multiple second nozzles (18) are distributed on the inner side of the guide frame (16). The first nozzles (9) and the second nozzles (18) are connected to each other. The guide frame (16) is connected to the water storage tank (6) via a pipeline; a toothed block (17) is circumferentially arranged on the outer side of the guide frame (16); a drive motor (13) is installed on the curing box (1); the output end of the drive motor (13) is connected to a transmission shaft (14); the transmission shaft (14) is rotatably arranged on the curing box (1); a gear (15) is arranged on the transmission shaft (14) to mesh with the toothed block (17); the drive motor (13) drives the guide frame (16) to move along an arc trajectory through the transmission shaft (14) and the gear (15); and after passing through the through hole arranged on the support base (3), it forms a closed ring frame around the precast beam body (4) together with the fixing frame (7); the film covering assembly is arranged on the curing box (1) and located on one side of the precast beam body (4); in use, it is used to cover the surface of the precast beam body (4).

2. The highway bridge precast beam maintenance device according to claim 1, characterized in that: The water storage tank (6) is installed on the inner wall of the top of the maintenance tank (1) and is connected to an external water source.

3. The highway bridge precast beam maintenance device according to claim 1, characterized in that: The bottom of the maintenance box (1) is provided with two sets of first slide rails (2) that slide in cooperation with the support base (3).

4. The highway bridge precast beam maintenance device according to claim 1, characterized in that: The guide frame (16) has a slider (19) at its inner end, and the fixed frame (7) has an arc-shaped guide groove on its inner side that cooperates with the slider (19).

5. The highway bridge precast beam maintenance device according to claim 1, wherein: The support base (3) has a through groove (10) that allows water to flow into contact with the bottom of the precast beam body (4). The distribution of the through groove (10) corresponds to the moving path of the second nozzle (18).

6. The highway bridge precast beam maintenance device according to claim 1, characterized in that: The first nozzle (9) is equidistantly distributed along the arc of the fixed frame (7), and the second nozzle (18) is equidistantly distributed along the arc of the guide frame (16).

7. A precast beam maintenance device for highway bridges according to any one of claims 1-6, characterized in that: The film-coating assembly includes a second slide rail (5), a support column (11), and a film roll (12); the second slide rail (5) is arranged around the outside of the support base (3); the support column (11) is slidably arranged on the second slide rail (5); the film roll (12) is sleeved on the support column (11) and located on the side of the precast beam body (4).

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