Combined prefabricated small box girder inner mold for highway

Abstract

The utility model discloses a combined prefabricated highway small box girder inner mould, including a plurality of inner film subassembly, and every inner film subassembly includes four formwork main parts and a plurality of U type metal groove, four formwork main parts are arranged in left upper, right upper, left lower, right lower four corners respectively, and the middle part of four formwork main parts is all bent to correspond to the shape of four corners, U type metal groove is arranged between the region of any two formwork main parts, and the front, rear end surface and two side end surfaces of every formwork main part are all provided with a plurality of connecting holes, the bottom surface of every U type metal groove is towards the outside, and two side surfaces of U type metal groove are all provided with a plurality of connecting holes, the connecting hole is used for setting bolt fastening structure to realize the connection and fixation between adjacent components, and the region between any two formwork main parts can set up different quantities of U type metal groove, so that the overall size of the combined prefabricated highway small box girder inner mould can be adjusted according to the quantity of U type metal groove.

Description

Technical Field

[0001] This utility model relates to the field of box girder inner mold technology, and in particular to a combined precast highway small box girder inner mold. Background Technology

[0002] Currently, box girders are widely used in highway bridge construction. Box girders have a hollow interior, requiring an internal mold to be embedded during prefabrication. The mold is then removed after the concrete is poured. The dimensions of the box girder's internal mold vary depending on the specific requirements of the project and are typically based on multiple factors. First, the span and design load of the highway bridge are decisive factors. A larger span requires a longer box girder. Simultaneously, the magnitude of the design load directly affects the width and height of the box girder, as these dimensions determine its cross-sectional area, thus influencing its load-bearing capacity.

[0003] For small box girders, the length of their inner molds can reach tens of meters, the width can be around 3 meters, and the height can be around 2 meters. The specific values ​​of the width and height usually need to be adjusted according to the design load and structural requirements of the small box girder. This means that existing box girder inner molds often need to be customized according to size requirements, making it difficult to use them flexibly for different size needs, resulting in low turnover, increased costs, and resource waste. Utility Model Content

[0004] To address the problems mentioned in the background section, the present invention adopts the following technical solution:

[0005] A modular precast highway box girder inner mold includes multiple inner membrane components, each inner membrane component including four template bodies and multiple U-shaped metal channels;

[0006] The four template bodies are respectively placed at the upper left, upper right, lower left, and lower right corners, and the middle of each of the four template bodies is bent to correspond to the shape of the four corners;

[0007] The U-shaped metal channel is set in the area between any two template bodies;

[0008] Each of the template bodies has multiple connection holes on its front and rear end faces and two side end faces;

[0009] The bottom surface of each U-shaped metal channel faces outward, and multiple connection holes are provided on both sides of the U-shaped metal channel;

[0010] The connection hole is used to install a bolt fastening structure, thereby realizing the connection and fixation between adjacent components;

[0011] Different numbers of U-shaped metal channels can be set in the area between any two template bodies, so that the overall size of the inner mold of the combined precast highway box girder can be adjusted according to the number of U-shaped metal channels.

[0012] In some embodiments, each of the U-shaped metal channels is sealed at both ends, and a connection hole is provided on each of its front and rear end faces.

[0013] In some embodiments, each of the template bodies is a hollow metal frame structure.

[0014] In some embodiments, a plurality of reinforcing ribs are provided on the inner side of each of the template bodies.

[0015] In some embodiments, the bolt fastening structure uses a double-ended bolt with threads at both ends, which, together with nuts at both ends, completes the connection and fixation between adjacent structures.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The combined precast highway box girder inner mold provided by this utility model adopts a template body with fixed size at the four corners, combined with multiple U-shaped metal channels, so that the overall size of the box girder inner mold can be adjusted by using different numbers of U-shaped metal channels, thereby enabling flexible use according to different size requirements, increasing the turnover of the box girder inner mold, thereby reducing costs and reducing resource waste. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the description of the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram showing the usage status of the combined precast highway box girder inner mold provided by this utility model;

[0019] Figure 2 This is a schematic diagram showing the connection between the jack and the base.

[0020] Figure 3 This is a schematic diagram of the internal mold for a combined precast highway box girder in the prior art.

[0021] Explanation of icon numbers:

[0022] 1. Template body; 2. U-shaped metal channel; 3. Connecting holes; 4. Bolt fastening structure; 5. Small box girder; 6. Reinforcing ribs. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with the accompanying drawings and specific embodiments, further explains how this utility model is implemented.

[0024] Reference Figure 1 As shown, this utility model provides a combined precast highway box girder inner mold, including multiple inner mold components. Each inner mold component includes four template bodies 1 and multiple U-shaped metal channels 2. The four template bodies 1 are respectively located at the upper left, upper right, lower left, and lower right corners, and the middle of each template body 1 is bent to correspond to the shape of the four corners. The U-shaped metal channels 2 are located in the area between any two template bodies 1. Multiple connecting holes 3 are opened on the front and rear end faces and two side end faces of each template body 1. The bottom surface of each U-shaped metal channel 2 faces outward, and multiple connecting holes 3 are opened on both sides of the U-shaped metal channel 2. Bolt fastening structures 4 are set at the connecting holes 3 to realize the connection and fixation between adjacent components. Different numbers of U-shaped metal channels 2 can be set in the area between any two template bodies 1, so that the overall size of the combined precast highway box girder inner mold can be adjusted according to the number of U-shaped metal channels 2.

[0025] exist Figure 1 In the illustrated embodiment, a U-shaped metal channel 2 is provided on each of the four sides of the inner mold of the small box girder, and the small box girder 5 is also shown. It is understood that in other embodiments, the number of U-shaped metal channels 2 on each side can be different, thereby adjusting the overall size of the inner mold of the small box girder. In this embodiment, if no U-shaped metal channels 2 are provided, the smallest-sized inner mold of the small box girder, composed only of four main mold bodies, can have a width of 400mm at its narrowest point, a width of 800mm at its widest point, and a height of 800mm; the width of the U-shaped metal channels 2 can be 50mm, thus allowing the size of the inner mold of the small box girder to be adjusted in 50mm increments.

[0026] Furthermore, each U-shaped metal groove 2 is sealed at both ends, and a connection hole 3 is provided on each of its front and rear end faces.

[0027] Further reference Figure 2 As shown, each template body 1 is a hollow metal frame structure. Preferably, each template body 1 has several reinforcing ribs 6 on its inner side.

[0028] Further reference Figure 3 As shown, the bolt fastening structure 4 uses a double-ended bolt, with threads on both ends, which, together with the nuts at both ends, complete the connection and fixation between adjacent structures.

[0029] In summary, the beneficial effects of this utility model are as follows: The combined precast highway box girder inner mold provided by this utility model adopts a template body with fixed dimensions at the four corners, combined with multiple U-shaped metal channels, so that the overall size of the box girder inner mold can be adjusted by using different numbers of U-shaped metal channels, thereby enabling flexible use according to different size requirements, increasing the turnover rate of the box girder inner mold, thereby reducing costs and reducing resource waste.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A modular precast highway box girder inner mold, comprising multiple inner mold components, characterized in that, Each inner membrane assembly includes four template bodies (1) and multiple U-shaped metal channels (2); The four template bodies (1) are respectively set at the upper left, upper right, lower left and lower right corners, and the middle of the four template bodies (1) is bent to correspond to the shape of the four corners; The U-shaped metal channel (2) is set in the area between any two template bodies (1); Each of the template bodies (1) has multiple connection holes (3) on its front and rear end faces and two side end faces. The bottom surface of each of the U-shaped metal channels (2) faces outward, and multiple connection holes (3) are provided on both sides of the U-shaped metal channels (2). The connecting hole (3) is used to install a bolt fastening structure (4) to achieve the connection and fixation between adjacent components; Different numbers of U-shaped metal channels (2) can be set in the area between any two template bodies (1), so that the overall size of the inner mold of the combined precast highway box girder can be adjusted according to the number of U-shaped metal channels (2).

2. The combined precast highway box girder inner mold according to claim 1, characterized in that, Each of the U-shaped metal channels (2) is sealed at both ends, and a connecting hole (3) is provided on each of its front and rear end faces.

3. The combined precast highway box girder inner mold according to claim 1, characterized in that, Each of the template bodies (1) is a hollow metal frame structure.

4. The combined precast highway box girder inner mold according to claim 3, characterized in that, Each of the template bodies (1) has several reinforcing ribs (6) on its inner side.

5. The combined precast highway box girder inner mold according to claim 1, characterized in that, The bolt fastening structure (4) uses a double-ended bolt with threads on both ends, which, together with the nuts at both ends, completes the connection and fixation between adjacent structures.

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