Stand column assembly and steel structure

Abstract

The utility model provides a stand column assembly and a steel structure. The stand column assembly comprises a stand column extending in the vertical direction, the stand column is provided with a first penetrating hole and a second penetrating hole, the first penetrating hole transversely penetrates through the stand column in the first direction, and the second penetrating hole transversely penetrates through the stand column in the second direction; the bracket comprises a first connecting piece and a second connecting piece which are fixed in a crossed manner; the first connecting piece penetrates through the first penetrating hole in the first direction. The second connecting piece penetrates through the second penetrating hole in the second direction. The bracket is fixedly connected with the stand column.

Description

Technical Field

[0001] This utility model relates to a column assembly and a steel structure. Background Technology

[0002] Currently, steel structures require multiple beams to be connected as a whole via multiple columns. The various components of existing steel structures are directly welded together.

[0003] During the welding process, steel structure components are prone to displacement, leading to instability, unreliable connections, low strength, inconvenient assembly, and low production efficiency.

[0004] Therefore, a new type of column assembly and steel structure is needed. Utility Model Content

[0005] One of the purposes of this utility model is to overcome at least one deficiency in the prior art and to provide a column assembly and steel structure.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] According to a first aspect of the present invention, a column assembly is provided. The column assembly includes:

[0008] A vertically extending column, the column having a first through hole and a second through hole, the first through hole extending laterally through the column in a first direction, and the second through hole extending laterally through the column in a second direction; and

[0009] A cow leg, the cow leg comprising a first connecting member and a second connecting member that are cross-fixed;

[0010] The first connector is provided to pass through the first through hole along the first direction;

[0011] The second connector is provided to pass through the second through hole along the second direction;

[0012] The corbel is fixedly connected to the column.

[0013] Optionally, the first connector is provided with a first groove and a first limiting wall located at the bottom of the first groove;

[0014] The second connector is provided with a second groove and a second limiting wall located at the bottom of the second groove;

[0015] The first limiting wall is located in the second groove, and the second limiting wall is located in the first groove;

[0016] The first connector is welded and fixed to the second connector.

[0017] Optionally, the first connector and the second connector are arranged in a cross shape.

[0018] Optionally, the column is a rectangular tube;

[0019] The column includes a pair of U-shaped members extending vertically;

[0020] The U-shaped component includes a middle wall and a pair of side walls located on both sides of the bottom.

[0021] A first through hole is provided on the intermediate wall;

[0022] The sidewall is provided with a U-shaped groove at the end facing away from the middle wall;

[0023] The sidewalls of a pair of U-shaped parts are joined and welded together, the positions of the first through holes on the pair of U-shaped parts are aligned to form the first through hole, and the U-shaped grooves on the sidewalls of the pair of U-shaped parts are together to form the second through hole.

[0024] Optionally, both the first connector and the second connector are rectangular connecting tubes;

[0025] Each end of the rectangular connecting pipe is provided with a first bushing;

[0026] The first bushing is fixedly connected to the inner wall of the rectangular connecting pipe, and partially protrudes to the outside of the rectangular connecting pipe to support the crossbeam.

[0027] Optionally, the end face of the rectangular connecting pipe is configured as a first inclined surface;

[0028] The upper vertical end of the first inclined surface is closer to the column than the lower vertical end;

[0029] The first bushing portion protrudes to the lateral side of the upper end of the first inclined surface.

[0030] Optionally, the first bushing is U-shaped; or,

[0031] The first bushing has a closed rectangular structure.

[0032] Optionally, the first connector and the second connector have the same structure;

[0033] The first groove has the same vertical length as the first limiting wall.

[0034] According to a second aspect of the present invention, a steel structure is provided. The steel structure includes:

[0035] Multiple of the aforementioned column components; and

[0036] A transverse beam extends laterally, one end of which is fixedly connected to a bracket of one of the column assemblies, and the other end of which is fixedly connected to a bracket of another of the column assemblies.

[0037] Optionally, both the first connector and the second connector are rectangular connecting tubes, and each end of the rectangular connecting tube is provided with a first bushing; the first bushing is partially fixedly connected to the inner wall of the rectangular connecting tube and partially protrudes to the outside of the rectangular connecting tube;

[0038] The end face of the rectangular connecting pipe is set as a first inclined surface, and the vertical upper end of the first inclined surface is closer to the column than the vertical lower end. The first bushing portion protrudes to the lateral side of the upper end of the first inclined surface.

[0039] The crossbeam is a rectangular tube, and the end face of the crossbeam is set as a second inclined surface. The inner wall of the upper end of the crossbeam overlaps with the first bushing, and the second inclined surface is connected to the first inclined surface and welded to fix it.

[0040] Optionally, a second bushing is provided at the end of the crossbeam;

[0041] The second bushing is fixedly connected to the inner wall of the crossbeam, and partially protrudes to the lateral side of the lower end of the crossbeam;

[0042] The second bushing overlaps with the lower inner wall of the rectangular connecting pipe.

[0043] Unlike existing technologies, the column assembly and steel structure provided by this utility model feature a first and second connecting piece of the corbel that are cross-fixed and pass through the first and second through holes of the column, respectively, and are fixedly connected to the column. This integrated column structure can be fixedly connected to the crossbeam, thereby forming a stable, accurate, reliable, and high-strength steel structure. The steel structure is easy to assemble and has high assembly efficiency. The components of the steel structure are small and prefabricated, facilitating transportation.

[0044] The first and second connecting parts of the bracket can be pre-positioned through a snap-fit ​​structure, which facilitates welding and fixing between the first and second connecting parts. The structure is stable, the connection is reliable, the strength is high, and the assembly is convenient and efficient.

[0045] The first and second connectors can have the same structure and dimensions, making them easy to manufacture.

[0046] The end faces of the first connector and the second connector can be set as first inclined surfaces to facilitate the hoisting of the crossbeam, so that the second inclined surface of the crossbeam can be connected with the first inclined surface of the first connector and the second connector, so that the bracket can reliably and stably support the crossbeam.

[0047] Bushings can be provided at the ends of the first connector, the second connector, and the crossbeam. The inner wall of the upper end of the crossbeam can overlap with the bushings on the first connector and the second connector. The bushings of the crossbeam can overlap with the lower inner walls of the first connector and the second connector, so as to realize the pre-positioning between the crossbeam and the first connector and the second connector. This facilitates the welding and fixing between the second inclined surface of the crossbeam and the first inclined surface of the rectangular connecting pipe. The steel structure is stable, reliable in connection, high in strength, easy to assemble, and highly efficient.

[0048] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of a steel structure provided in one embodiment of the present invention.

[0050] Figure 2 for Figure 1 A structural diagram of the column assembly.

[0051] Figure 3 for Figure 2 A schematic diagram of the structure of a cow's leg.

[0052] Figure 4 for Figure 3 A schematic diagram of its breakdown.

[0053] Figure 5 for Figure 2 A schematic diagram of the structure of the column.

[0054] Figure 6 for Figure 5 A schematic diagram of its breakdown.

[0055] Figure 7 This is a schematic diagram of the structure of a bushing provided in one embodiment of the present invention.

[0056] Figure 8 This is a schematic diagram of the structure of a bushing provided in one embodiment of the present invention.

[0057] Figure 9 for Figure 1 A schematic diagram of the structure of the crossbeam.

[0058] in:

[0059] 1-Column assembly;

[0060] 10-Columns;

[0061] 12-U-shaped parts;

[0062] 121-Intermediate wall;

[0063] 122 - First perforation;

[0064] 123 - First through hole;

[0065] 125-Sidewall;

[0066] 126-U-groove;

[0067] 128 - Second perforation;

[0068] 20-Beef leg;

[0069] 22-First connector;

[0070] 222 - First groove;

[0071] 224 - First limiting wall;

[0072] 24 - Second connector;

[0073] 242 - Second groove;

[0074] 244 - Second limiting wall;

[0075] 26 - First inclined plane;

[0076] 28 - First bushing;

[0077] 5-Crossbeam;

[0078] 52-Second slope;

[0079] 54 - Second bushing;

[0080] Z - Vertical;

[0081] X - First direction;

[0082] Y - Second direction. Detailed Implementation

[0083] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0084] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms “a,” “the,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0085] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0086] It should be noted that the directional terms such as "upper," "lower," "left," and "right" used in the description of the embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when it is mentioned that one element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0087] According to one embodiment of this utility model, a steel structure is provided. Please refer to... Figures 1 to 3 The steel structure includes a column assembly 1 and a crossbeam 5. The column assembly 1 includes columns 10 and brackets 20. The steel structure has a vertical Z-axis and a horizontal axis, with the horizontal axis being any direction perpendicular to the vertical Z-axis. The columns 10 extend vertically and have a certain height, and can be installed on the ground, underground, or on a load-bearing structure. The brackets 20 are fixedly installed on the columns 10 and are used to connect to the crossbeams 5.

[0088] The column 10 is provided with a first through hole 122 and a second through hole 128. The first through hole 122 is provided transversely through the column 10 along a first direction X. The second through hole 128 is provided transversely through the column 10 along a second direction Y. The first direction and the second direction are different.

[0089] The bracket 20 includes a first connector 22 and a second connector 24. The first connector 22 is disposed through a first through hole 122 along a first direction. The second connector 24 is disposed through a second through hole 128 along a second direction.

[0090] The first connector 22 and the second connector 24 are fixedly arranged in a cross configuration. The bracket 20 is fixedly connected to the column 10. More preferably, the first connector 22 and the second connector 24 can be arranged in a cross configuration to meet the structural layout requirements of the steel structure. It can be understood that by setting the first direction and the second direction perpendicular to each other, the first connector 22 and the second connector 24 can be arranged in a cross configuration.

[0091] The crossbeam 5 is a rectangular tube extending laterally. One end of the crossbeam 5 is fixedly connected to the bracket 20 of one column assembly 1, and the other end is fixedly connected to the bracket 20 of another column assembly 1. The crossbeam 5 can be laterally butted and welded to the first connector 22 or the second connector 24 for fixation.

[0092] With this configuration, the first connecting piece 22 and the second connecting piece 24 of the corbel 20 are cross-fixed and pass through the first through hole 122 and the second through hole 128 of the column 10 respectively, and are fixedly connected to the column 10. This integrated column 10 structure can be fixedly connected to the crossbeam 5, thus forming a stable and reliable steel structure. The steel structure is easy to assemble and has high assembly efficiency. The components of the steel structure are small and prefabricated, facilitating transportation.

[0093] In this embodiment, please refer to Figure 3 and Figure 4 The first connector 22 may be provided with a first groove 222 and a first limiting wall 224 located at the bottom of the first groove 222.

[0094] The second connector 24 may be provided with a second groove 242 and a second limiting wall 244 located at the bottom of the second groove 242.

[0095] The first limiting wall 224 and the second groove 242 can be complementally configured. The first limiting wall 224 is confined within the second groove 242.

[0096] The second limiting wall 244 and the first groove 222 can be complementally configured, with the second limiting wall 244 confined within the first groove 222. The first connector 22 and the second connector 24 are welded and fixed together.

[0097] With this configuration, the first connecting piece 22 and the second connecting piece 24 of the bracket 20 can be pre-positioned through the snap-fit ​​structure, which facilitates welding and fixing between the first connecting piece 22 and the second connecting piece 24. The structure is stable, the connection is reliable, and the assembly is convenient and efficient.

[0098] It is understandable that, for ease of production and assembly, the first connector 22 and the second connector 24 can have identical structures. The first groove 222 and the first limiting wall 224 of the first connector 22 can have the same vertical length. Correspondingly, considering that the first connector 22 and the second connector 24 have the same structure, the second groove 242 and the second limiting wall 244 of the second connector 24 also have the same vertical length.

[0099] With this configuration, the structure and dimensions of the first connector 22 and the second connector 24 can be set to be the same, which is convenient for manufacturing.

[0100] Please see Figure 5 and Figure 6 To facilitate the assembly and connection between the column 10 and the bracket 20, the column 10 can be configured as a rectangular tube. The cross-section of the column 10 is an annular rectangular structure.

[0101] To form a rectangular tubular column 10, the column 10 may specifically include a pair of U-shaped members 12, each with a U-shaped cross-section. Both U-shaped members 12 extend vertically. Each U-shaped member 12 may include a central wall 121 and a pair of side walls 125, located on opposite sides of the bottom. A first through hole 123 is provided on the central wall 121 of the U-shaped member 12. A U-shaped groove 126 is provided on the side wall 125 of the U-shaped member 12, located at the end of the side wall 125 facing away from the central wall 121.

[0102] The sidewalls 125 of a pair of U-shaped parts 12 are joined and welded together to form a rectangular tube column 10. The first through holes 123 on the pair of U-shaped parts 12 are aligned to form a first through hole 122. The U-shaped grooves 126 on the sidewalls 125 of the pair of U-shaped parts 12 are enclosed together to form a second through hole 128.

[0103] It is understandable that when the sidewalls 125 of a pair of U-shaped parts 12 are joined and welded together, the U-shaped grooves 126 on the sidewalls 125 of the pair of U-shaped parts 12 will together form a pair of aligned second through holes, thus ultimately forming the second through hole 128.

[0104] In this embodiment, please refer to Figure 2 and Figure 3 Both the first connector 22 and the second connector 24 can be configured as rectangular connecting pipes. The cross-section of both the first connector 22 and the second connector 24 is rectangular. Each end of the rectangular connecting pipe is provided with a first bushing 28.

[0105] The first bushing 28 can be configured to support the crossbeam 5. Part of the first bushing 28 is fixedly connected to the inner wall of the rectangular connecting pipe, and part protrudes to the outside of the rectangular connecting pipe.

[0106] The end face of the rectangular connecting pipe can be configured as a first inclined surface 26. The vertical upper end of the first inclined surface 26 of the rectangular connecting pipe is positioned closer to the column 10 than the vertical lower end. A portion of the first bushing 28 protrudes to the lateral side of the upper end of the first inclined surface 26. The first connector 22 and the second connector 24 are welded and fixed together. Thus, a portion of the first bushing 28 is exposed to the outside of the lateral side of the rectangular connecting pipe, suitable for supporting the crossbeam 5.

[0107] Please see Figure 9 Correspondingly, the crossbeam 5 can be configured as a rectangular tube. The end face of the crossbeam 5 is configured as a second inclined surface 52. The inner wall of the upper end of the crossbeam 5 overlaps with the first bushing 28.

[0108] A second bushing 54 may be provided at the end of the crossbeam 5. The second bushing 54 is partially fixed to the inner wall of the crossbeam 5 and partially protrudes to the lateral side of the lower end of the crossbeam 5. The second bushing 54 overlaps with the lower inner wall of the rectangular connecting pipe. In this way, part of the structure of the second bushing 54 is exposed to the outside of the lateral side of the crossbeam 5, and the rectangular connecting pipe can support the crossbeam 5 by supporting the second bushing 54.

[0109] Please see Figure 1 The second inclined surface 52 of the crossbeam 5 is joined and welded to the first inclined surface 26 of the rectangular connecting pipe.

[0110] Understandably, by installing bushings on the inner wall of the rectangular connecting pipe or the inner wall of the crossbeam 5, it is possible to effectively prevent welding debris from entering the interior of the steel structure.

[0111] With this configuration, the vertical upper end of the first inclined surface 26 of the rectangular connecting pipe is closer to the column 10 than the vertical lower end, which facilitates the hoisting of the crossbeam 5 from top to bottom and makes it easier for the second inclined surface 52 of the crossbeam 5 to connect with the first inclined surface 26 of the rectangular connecting pipe, so that the bracket 20 can reliably and stably support the crossbeam 5.

[0112] The inner wall of the upper end of the crossbeam 5 overlaps with the first bushing 28 on the first connector 22 and the second connector 24, and the second bushing 54 of the crossbeam 5 overlaps with the lower inner wall of the first connector 22 and the second connector 24, so as to realize the pre-positioning between the crossbeam 5 and the first connector 22 and the second connector 24, and facilitate the welding and fixing between the second inclined surface 52 of the crossbeam 5 and the first inclined surface 26 of the rectangular connecting pipe. The steel structure is stable, reliable in connection, convenient in assembly, and has high assembly efficiency.

[0113] The bushing is designed to be fixedly connected to the inner wall of the rectangular connecting pipe or the inner wall of the crossbeam 5 and to extend to the outside of the inner wall of the rectangular connecting pipe or the crossbeam 5.

[0114] For an optional example, please refer to Figure 7 The first bushing 28 can be U-shaped. The second bushing 54 can be U-shaped. The first bushing 28 and the second bushing 54 can be spaced apart.

[0115] Of course, in some other embodiments, the first bushing 28 and the second bushing 54 may be mated together to form a ring structure.

[0116] For another optional example, please refer to Figure 8 The first bushing 28 can be configured as a closed rectangular structure. The second bushing 54 can be configured as a closed rectangular structure. The first bushing 28 and the second bushing 54 can be spaced apart.

[0117] Of course, in some other embodiments, the first bushing 28 and the second bushing 54 are mated together to form an integral ring structure.

[0118] In one specific embodiment, the following example illustrates a method for assembling a steel structure.

[0119] Please see Figures 1 to 9 First, the first limiting wall 224 of the first connecting member 22 is positioned within the second groove 242 of the second connecting member 24, and the second limiting wall 244 of the second connecting member 24 is positioned within the first groove 222 of the first connecting member 22, thereby pre-positioning the first connecting member 22 and the second connecting member 24 of the bracket 20 through a snap-fit ​​structure. Then, the first connecting member 22 and the second connecting member 24 are welded and fixed in place.

[0120] Then, one end of the first connector 22 is passed through the first through hole 123 of a U-shaped member 12. Next, one U-shaped member 12 is butt-jointed with another U-shaped member 12 and welded to form a rectangular tube column 10. The first through holes 123 on the pair of U-shaped members 12 are aligned to form a first through hole 122. The U-shaped grooves 126 on the sidewalls 125 of the pair of U-shaped members 12 together form a second through hole 128. Finally, the first connector 22 and the second connector 24 are welded to the column 10 respectively to form the column assembly 1.

[0121] Then, the inner wall of the upper end of the crossbeam 5 abuts against the first bushing 28, and the second bushing 54 overlaps with the inner wall of the lower end of the rectangular connecting pipe. After that, the second inclined surface 52 of the crossbeam 5 is butt-jointed with the first inclined surface 26 of the rectangular connecting pipe and welded to fix it, thus forming the steel structure.

[0122] In addition, please see Figure 1 In this embodiment, multiple corbels 20 can be arranged vertically and spaced apart. One end of the crossbeam 5 is fixedly connected to the first connector 22 or the second connector 24 of a column assembly 1, and the other end is fixedly connected to the first connector 22 or the second connector 24 of another column assembly 1.

[0123] Of course, in some other embodiments, at least one of the column, the first connector, the second connector, and the beam may be configured as a solid steel structure or other ring structure.

[0124] In this invention, the first and second connecting parts of the corbel are cross-fixed and pass through the first and second through holes of the column, respectively, and are fixedly connected to the column. This integrated column structure can be fixedly connected to the crossbeam 5, thereby forming a stable, accurate, reliable, and high-strength steel structure. The steel structure is easy to assemble and has high assembly efficiency. The components of the steel structure are small and prefabricated, facilitating transportation.

[0125] The first and second connecting parts of the bracket can be pre-positioned through a snap-fit ​​structure, which facilitates welding and fixing between the first and second connecting parts. The structure is stable, the connection is reliable, the strength is high, and the assembly is convenient and efficient.

[0126] The first and second connectors can have the same structure and dimensions, making them easy to manufacture.

[0127] The end faces of the first connector and the second connector can be set as first inclined surfaces to facilitate the hoisting of the crossbeam, so that the second inclined surface of the crossbeam can be connected with the first inclined surface of the first connector and the second connector, so that the bracket can reliably and stably support the crossbeam.

[0128] Bushings can be provided at the ends of the first connector, the second connector, and the crossbeam. The inner wall of the upper end of the crossbeam can overlap with the bushings on the first connector and the second connector. The bushings of the crossbeam can overlap with the lower inner walls of the first connector and the second connector, so as to realize the pre-positioning between the crossbeam and the first connector and the second connector. This facilitates the welding and fixing between the second inclined surface of the crossbeam and the first inclined surface of the rectangular connecting pipe. The steel structure is stable, reliable in connection, high in strength, easy to assemble, and highly efficient.

[0129] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A column assembly, characterized in that, include: A vertically extending column, the column having a first through hole and a second through hole, the first through hole extending laterally through the column in a first direction, and the second through hole extending laterally through the column in a second direction; and A cow leg, the cow leg comprising a first connecting member and a second connecting member that are cross-fixed; The first connector is provided to pass through the first through hole along the first direction; The second connector is provided to pass through the second through hole along the second direction; The corbel is fixedly connected to the column.

2. The column assembly according to claim 1, characterized in that: The first connector is provided with a first groove and a first limiting wall located at the bottom of the first groove; The second connector is provided with a second groove and a second limiting wall located at the bottom of the second groove; the first limiting wall is located in the second groove, and the second limiting wall is located in the first groove; The first connector is welded and fixed to the second connector.

3. The column assembly according to claim 2, characterized in that: The first connector and the second connector are arranged in a cross shape.

4. The column assembly according to claim 2, characterized in that: The column is a rectangular tube; The column includes a pair of U-shaped members extending vertically; The U-shaped component includes a middle wall and a pair of side walls located on both sides of the bottom. A first through hole is provided on the intermediate wall; The sidewall is provided with a U-shaped groove at the end facing away from the middle wall; The sidewalls of a pair of U-shaped parts are joined and welded together, the positions of the first through holes on the pair of U-shaped parts are aligned to form the first through hole, and the U-shaped grooves on the sidewalls of the pair of U-shaped parts are together to form the second through hole.

5. The column assembly according to claim 2, characterized in that: Both the first connector and the second connector are rectangular connecting tubes; Each end of the rectangular connecting pipe is provided with a first bushing; The first bushing is fixedly connected to the inner wall of the rectangular connecting pipe, and partially protrudes to the outside of the rectangular connecting pipe to support the crossbeam.

6. The column assembly according to claim 5, characterized in that: The end face of the rectangular connecting tube is set as a first inclined surface; The upper vertical end of the first inclined surface is closer to the column than the lower vertical end; The first bushing portion protrudes to the lateral side of the upper end of the first inclined surface.

7. The column assembly according to claim 6, characterized in that: The first bushing is U-shaped; or, The first bushing is a closed rectangular structure.

8. The column assembly according to any one of claims 2-7, characterized in that: The first connector and the second connector have the same structure; The first groove has the same vertical length as the first limiting wall.

9. A steel structure, characterized in that, include: Multiple column assemblies according to any one of claims 1-8; and A transverse beam extends laterally, one end of which is fixedly connected to a bracket of one of the column assemblies, and the other end of which is fixedly connected to a bracket of another of the column assemblies.

10. The steel structure according to claim 9, characterized in that: Both the first connector and the second connector are rectangular connecting tubes, and each end of the rectangular connecting tube is provided with a first bushing; the first bushing is partially fixed to the inner wall of the rectangular connecting tube and partially protrudes to the outside of the rectangular connecting tube; The end face of the rectangular connecting pipe is set as a first inclined surface, and the vertical upper end of the first inclined surface is closer to the column than the vertical lower end. The first bushing portion protrudes to the lateral side of the upper end of the first inclined surface. The crossbeam is a rectangular tube, and the end face of the crossbeam is set as a second inclined surface. The inner wall of the upper end of the crossbeam overlaps with the first bushing, and the second inclined surface is connected to the first inclined surface and welded to fix it.

11. The steel structure according to claim 10, characterized in that: The end of the crossbeam is provided with a second bushing; The second bushing is fixedly connected to the inner wall of the crossbeam, and partially protrudes to the lateral side of the lower end of the crossbeam; The second bushing overlaps with the lower inner wall of the rectangular connecting pipe.

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