End frame flange plate structure

Abstract

The utility model discloses an end frame flange plate structure, a flange plate comprises an inner flange plate and an outer flange plate, and the inner flange plate is arranged on the inner side of an end frame column of an end frame and is used for internal bolt connection; the outer flange plate is arranged on the outer side of the end frame column body, and the edge of the outer flange plate exceeds the section of the end frame column body. According to the utility model, the inner flange plate and the outer flange plate are arranged on the end frame column body to form a unique double-layer flange plate structure: the inner flange plate is arranged on the inner side of the end frame column body and is used for internal bolt connection; the outer flange plate is arranged on the outer side of the end frame column body, the edge of the outer flange plate exceeds the section of the end frame column body, and the number of connecting points and the stress area are increased. Through the synergistic effect of the inner flange plate and the outer flange plate, the load between the upper-layer formwork and the lower-layer formwork is effectively dispersed, the tensile and shear resistance of connection is remarkably improved, the problems that the upper-layer formwork and the lower-layer formwork of a module house are insufficient in connection strength and weak in shear resistance are effectively solved, and the overall stability and safety of a modular building in high-load and high-rise application are ensured.

Description

Technical Field

[0001] This utility model relates to the field of modular housing construction technology, and in particular to an end frame flange plate structure. Background Technology

[0002] Modular building technology, as an efficient and flexible construction method, has been widely applied and developed globally in recent years. Modular housing, as a typical example of modular construction, is widely used in various scenarios such as temporary housing, office spaces, and commercial spaces due to its advantages of rapid assembly, mobility, and reusability. Compared with traditional construction methods, modular housing significantly shortens the construction cycle and reduces the complexity of on-site construction through a combination of factory prefabrication and on-site assembly. However, with the continuous expansion of the application scenarios of modular housing, problems exposed in its structural design during transportation, installation, and use have gradually emerged, becoming urgent technical challenges to be solved.

[0003] The applicant filed a patent application on November 28, 2023 (Publication No.: CN117661731A, Publication Date: March 8, 2024), disclosing an overall structure, assembly method, transportation method, and on-site installation method for a modular house, aiming to optimize the structural design of modular houses and solve the shortcomings of traditional modular houses in transportation and installation. In this patent application, the overall structure of the modular house includes a formwork frame and a movable floor slab, wherein the formwork frame consists of end frames, beams, and a fixed floor slab. The movable floor slab is connected to the fixed floor slab by a hinge, allowing it to rotate along the fixed floor slab, thus providing flexibility in space utilization during transportation and deployment during installation. The end frames are hinged to movable walls, which are stored within the frame during transportation and deployed during on-site installation, forming part of another space together with the movable floor slab. Furthermore, a ceiling assembly is provided at the top of the formwork frame, and a roof assembly is provided below. Electromechanical equipment and pipelines are arranged between the ceiling assembly and the roof assembly, and are transported with the modular house as a whole. The fixed floor slab and / or movable floor slab at the bottom of the upper formwork are connected to the ceiling assembly of the lower formwork through connecting components.

[0004] While the aforementioned technical solutions improve the transportation efficiency and installation convenience of modular housing to some extent, the inventors discovered areas for improvement in the connection between the upper and lower frame structures during practical application. Specifically, in the connection components described in the patent, flange plates are connected to adjacent frame structures via pin holes located on their inner sides. However, because the pin holes are only distributed on the inner side of the flange plates, the number of connection points and the stress-bearing area are limited, resulting in insufficient connection strength. Especially when the modular housing is subjected to large loads (such as wind loads or seismic loads) or external impacts, the connection between the flange plate and the pin holes is prone to loosening or even breakage. This situation not only affects the overall stability of the modular housing but also poses a potential threat to its safety. Therefore, an improved connection structure is urgently needed to enhance the connection strength between the upper and lower frame structures and ensure the reliability and safety of the modular housing under various complex environments. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the issues of insufficient connection strength between upper and lower layers and weak shear resistance in existing modular buildings, thereby improving the overall stability and safety of modular buildings and expanding their application scenarios in high-load and high-rise buildings.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An end frame flange structure is provided, the flange includes an inner flange and an outer flange. The inner flange is disposed inside the end frame column and is used for internal bolt connection. The outer flange is disposed outside the end frame column and the edge of the outer flange extends beyond the cross section of the end frame column.

[0008] Preferably, the outer flange has different extension lengths on different sides of the end frame column, and at least one side of the outer flange is designed as a short plate connection structure.

[0009] Preferably, the flange plate is provided with multiple bolt holes, the size and number of which are configured according to the height level of the end frame.

[0010] Preferably, the bolt hole size is ≥ M12, and the bolt hole size increases accordingly with the increase of the end frame height level.

[0011] Preferably, the outer periphery of the end frame column is also used as a connecting seat for the installation connection of the corner piece.

[0012] Preferably, the flange plate has an opening at its center.

[0013] The beneficial effects of this utility model include the following:

[0014] This invention creates a unique double-layer flange structure by installing inner and outer flange plates on the end frame columns. The inner flange plate is located inside the end frame column for internal bolt connections; the outer flange plate is located on the outside of the end frame column, with its edge extending beyond the column's cross-section, increasing the number of connection points and the load-bearing area. Through the synergistic effect of the inner and outer flange plates, the load between the upper and lower frame layers is effectively distributed, significantly improving the tensile and shear resistance of the connection. This effectively solves the problems of insufficient connection strength and weak shear resistance between upper and lower layers of modular housing, ensuring the overall stability and safety of modular buildings in high-load and high-rise applications.

[0015] This utility model features a flange plate with multiple bolt holes. The size and number of bolt holes are rationally configured according to the height level of the end frame. The bolt specifications include M30 and M36, increasing with the height level. This targeted bolt configuration design not only enhances the fastening effect of the connection but also significantly improves the bending resistance of the connection. Combining the advantages of the double-layer flange plate structure, this utility model further solves the technical problem of easy deformation of the connection parts of modular buildings under complex loads, thereby improving the applicability and reliability of modular buildings in high-rise buildings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the end frame flange structure in Example 1;

[0017] Figure 2 The diagram illustrates the structure of the various shapes of outer flanges in Example 1.

[0018] Reference numerals: 1. Inner flange plate; 2. Outer flange plate; 3. Bolt hole; 4. Center opening; 5. End frame column; 6. Corner piece. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, but these specific embodiments do not limit the scope of protection of the present invention in any way.

[0020] Example 1

[0021] See appendix Figure 1-2 An end frame flange structure includes an inner flange 1, an outer flange 2, bolt holes 3, a center opening 4, an end frame column 5, and corner pieces 6. The inner flange 1 and the outer flange 2 are mounted on the end frame column 5. This flange structure is mainly used for connecting upper and lower formwork in modular buildings, effectively enhancing connection strength and improving the stability and safety of the overall structure.

[0022] The inner flange plate 1 is arranged inside the end frame column 5 and is tightly connected to the inner wall of the end frame column 5 through a full - circumference weld. The diameter of the inner flange plate 1 is designed according to the specifications of the end frame column 5, usually smaller than the inner diameter of the end frame column 5, ensuring that the inner flange plate 1 can fully fit the inner wall of the end frame column 5 to maximize the connection strength.

[0023] The outer flange plate 2 is arranged outside the end frame column 5, slightly thicker than the inner flange plate 1 to bear greater external loads. The edge of the outer flange plate 2 extends beyond the cross - section of the end frame column 5, forming an effective extended connection area, significantly increasing the connection area, and improving the stability of the upper and lower layer formwork connections. The outer flange plate 2 is fixed to the outer wall of the end frame column 5 by a combination of intermittent welding and continuous welding, effectively avoiding the problem of thermal deformation during the welding process.

[0024] The outer flange plate 2 has different extension lengths on different sides of the end frame column 5. Specifically, although the extension width towards the outside of the end frame column 5 is the same, the extension length of the outer flange plate 2 on the outside of the end frame column 5 is different. This differential design meets the connection requirements in different directions. At least one side of the outer flange plate 2 is designed as a short - plate connection structure, mainly for specific connection requirements with adjacent modules. In this embodiment, the shape of the outer flange plate 2 is adjusted according to different column poles and layers, specifically including fully - enclosed or semi - enclosed shapes such as "square", "L", "C", and "ㄥ" shapes.

[0025] The bolt holes 3 are distributed on the inner flange plate 1 and the outer flange plate 2. The bolt holes 3 include M20, M24, M30, and M36 specifications. They are used to install connection bolts, and according to different height levels of the end frame, the specifications and quantities of the bolt holes 3 also vary. The specification size of the bolt holes 3 on the inner flange plate 1 is generally smaller than that on the outer flange plate 2.

[0026] The central opening 4 is located at the center of the flange plate, mainly used for the passage of pipelines and the installation of equipment. The inner wall of the central opening 4 is polished to ensure that the passing pipelines will not be damaged due to friction or sharp edges. The central opening 4 not only facilitates pipeline layout but also reduces the overall weight of the flange plate. The typical weight - reduction effect is about 8 - 12%, which is convenient for installation and adjustment.

[0027] The outer peripheral edge of the end frame column 5 is also a connection seat for the installation of the corner fitting 6. The corner fitting 6 is fixedly installed on the connection seat by high - strength bolts. The corner fitting 6 enhances the overall structural stability of the modular house, especially improves the ability to resist lateral forces, and has a significant resistance to wind loads and seismic loads.

[0028] The working principle and method of the above - mentioned end - frame flange plate structure are as follows:

[0029] The first step is to determine the specific specifications of the inner flange plate 1 and the outer flange plate 2 based on the height level and load-bearing requirements of the modular house. Simultaneously, select the appropriate specifications and number of bolt holes 3 according to the height level to ensure that the connection strength meets structural requirements.

[0030] The second step is to weld and fix the inner flange plate 1 to the inside of the end frame column 5, and precisely position the inner flange plate 1 inside the end frame column 5; then, temporarily fix the position of the inner flange plate 1 by spot welding, and finally perform continuous welding around the circumference; finally, weld and fix the outer flange plate 2 to the outside of the end frame column 5.

[0031] The third step is to align the flange plates of the upper and lower mold frames during the assembly of the modular housing, and use temporary positioning pins to initially center the upper and lower flange plates; insert high-strength bolts, M30 or M36 (selected according to the height level), into the inner flange plate 1; finally, tighten the nuts and apply preload.

[0032] Fourth, high-strength bolts are also inserted into the outer flange plate 2 to complete the external connection. The connecting bolts on the outer flange plate 2 and the bolts on the inner flange plate 1 are arranged in an alternating manner to disperse stress and enhance the overall integrity of the connection.

[0033] The fifth step is to install the corner piece 6 on the connecting seat on the outer perimeter of the end frame column 5, and connect the other side of the corner piece 6 to the adjacent component to form a stable triangular support structure, which further enhances the overall stability of the modular house.

[0034] Finally, various pipelines are laid through the center opening 4 of the flange plate. First, according to the design requirements, determine the type and quantity of pipelines that need to pass through the center opening 4; then, before installing the pipelines, install protective sleeves on the edge of the opening to prevent the pipelines from being scratched by the edge of the opening; next, pass the electrical, water heating, ventilation and other pipelines through the center opening 4 in sequence; finally, use special sealing material to seal the gap between the pipelines and the opening to prevent the penetration of air, moisture and dust.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any innovative improvements or substitutions based on the present invention should fall within the scope of the claims of the present invention. Furthermore, the parameters, materials, and processes mentioned in the above embodiments are not unique. Without departing from the essence of the present invention, those skilled in the art can make various alternatives, and these alternatives should also be considered to fall within the scope of protection of the present invention.

Claims

1. An end-rack flange plate structure, characterized by, The flange plate comprises an inner flange plate and an outer flange plate, the inner flange plate is arranged inside the end frame column of the end frame and is used for internal bolt connection, and the outer flange plate is arranged outside the end frame column and the edge of the outer flange plate exceeds the section of the end frame column.

2. The end-rack flange plate structure according to claim 1, characterized by The outer flange plate has different extension lengths on different sides of the end frame column, and the outer flange plate on at least one side is designed as a short plate connection structure.

3. The end-rack flange plate structure according to claim 1, characterized by, A plurality of bolt holes are arranged on the flange plate, and the size and number of the bolt holes are configured according to the height level of the end frame.

4. The end-rack flange plate structure according to claim 3, characterized by The size of the bolt hole is greater than or equal to M12.

5. The end-rack flange plate structure according to claim 1, wherein The outer peripheral edge of the end frame column is also used as a connecting seat for mounting and connecting the corner piece.

6. The end-rack flange plate structure according to claim 1, characterized by An opening is arranged at the center position of the flange plate.

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