Rectangular tube single-layer reticulated shell structure in mixed connection form

Abstract

The utility model relates to the technical field of space grid structures, in particular to a rectangular pipe single-layer latticed shell structure in a mixed connection mode, which comprises a central connecting piece, the bolt connecting joint comprises a plurality of first connecting rods installed in the center connecting piece, limiting rings are fixedly connected to the outer side walls of the first connecting rods, dislocation plates are fixedly connected to the ends, located in the center connecting piece, of the first connecting rods, the heights of the dislocation plates of all the first connecting rods are different, and four sets of threaded holes are formed in the surfaces of the dislocation plates. And a connecting bolt is in threaded connection with the interior of the buffer pad and is in threaded connection with the threaded hole at the same time. According to the utility model, the central connecting piece is matched with the bolt connecting node, and the central connecting piece is matched with the mounting groove, so that the connecting rods I with the staggered plates with different heights are mounted in the central connecting piece in sequence, and therefore, on the basis of reducing the use amount of bolts, the dead weight is reduced, and the connecting strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of space grid structures, in particular to a rectangular tube single-layer lattice shell structure in a mixed connection form. Background Art

[0002] Single-layer lattice shell structures, characterized by their light weight, large spans, and elegant architectural design, have been widely used in large-span buildings such as airports and train stations in recent years. Bolted and welded connections are the primary connection methods for single-layer lattice shell structures. Welded connections, connecting members to the node body through welding, offer wide applicability, good airtightness and watertightness, high node and structural stiffness, strong bearing capacity, and excellent structural integrity. However, these methods often require extensive on-site welding, resulting in high construction costs and difficulty, and difficulty in ensuring connection quality. Bolted connections, connecting members to the node body through bolts, not only ensure construction quality and efficiency, but also align with the trend toward prefabricated construction. Bolted connections are preferred when the nodes of a single-layer lattice shell structure are small. However, when the nodes of a single-layer lattice shell structure are subjected to large forces and have large volumes, bolted connections often require larger bolts and nodes, leading to construction inconveniences and a high steel consumption. Therefore, hollow welded nodes are preferred to effectively reduce the weight of the node body. The rectangular tube single-layer lattice shell structure has good architectural effect and reasonable stress, and has been increasingly widely used at home and abroad.

[0003] In the existing rectangular tube single-layer lattice shell structure, each rod is usually a rectangular tube rod with a cross-sectional height and a node body height that are basically the same. In the parts of the structure with less stress, the rod material cannot be fully utilized, resulting in waste, which not only increases the deadweight of the structure but also increases the economic cost. Utility Model Content

[0004] The purpose of the utility model is to provide a rectangular tube single-layer lattice shell structure with a mixed connection form, which improves the connection effect by cooperating with a central connector and a bolt connection node, so as to solve the problem in the prior art that the rod material cannot be fully utilized in the parts of the structure with less stress, thereby causing waste, which not only increases the dead weight of the structure but also increases the economic cost.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rectangular tube single-layer lattice shell structure with a mixed connection form, including a central connecting member, a bolt connection node installed inside the central connecting member, the bolt connection node including several groups of connecting rods one installed inside the central connecting member and the outer wall of the connecting rod one is fixedly connected to a limiting ring, the connecting rod one is fixedly connected to an offset plate at one end located inside the central connecting member, the offset plates of each group of the connecting rods one have different heights, four groups of threaded holes are opened on the surface of the offset plate, a buffer pad is provided above the threaded hole, the buffer pad is fixedly connected to the top of the central connecting member, the internal thread of the buffer pad is connected to a connecting bolt, and the connecting bolt is threadedly connected to the threaded hole at the same time, and the stacking relationship between the offset plates is utilized to make the connecting bolt and the offset plate threadedly connected, which not only simplifies the connection process, but also improves the connection strength through the mutual support between the offset plates.

[0006] Preferably, a plurality of mounting grooves are provided on the outer side of the central connecting member, and the connecting rod 1 is inserted into the inside of the mounting grooves, and the installation of the connecting rod 1 is completed through the mounting grooves.

[0007] Preferably, the top end of the central connecting member is fixedly connected to an upper edge plate, the bottom end of the central connecting member is fixedly connected to a lower edge plate, and the bottom end of the lower edge plate is fixedly connected to a reinforcing rib, and the strength of the structure is enhanced by the cooperation between the lower edge plate and the reinforcing rib.

[0008] Preferably, a protective plate is fixedly connected to the top wall of the central connecting member, and the protective plate is located between the buffer pad and the offset plate, so as to strengthen support and protection of the outer side of the connecting bolt.

[0009] Preferably, a plurality of groups of welding nodes are provided on the outer side of the central connecting piece, and connecting rods 2 are welded to both ends of the welding nodes, and the connection between the welding nodes and other parts is achieved through the connecting rods 2.

[0010] Preferably, the inner wall of the connecting rod 2 is fixedly connected with several groups of anti-deformation columns, and the outer wall of the connecting rod 2 is sleeved with a sleeve rod, and the surface of the sleeve rod is provided with heat dissipation holes. The heat dissipation holes and the sleeve rod are used to enhance the heat dissipation of the structure and cooperate with the sleeve rod to prevent the connecting rod 2 from deforming during welding.

[0011] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0012] By cooperating with the central connector and the bolt connection node, and by cooperating with the central connector and the installation slot, the connecting rod 1 with the offset plates of different heights is sequentially installed inside the central connector, thereby achieving alignment with the help of the limit ring on the outside of the connecting rod 1, and the connection between the connecting rod 1 and the central connector is completed at one time by cooperating with the connecting bolts and the threaded holes, and the offset plates stacked tightly together support each other, thereby reducing the amount of bolts used, reducing the dead weight and improving the connection strength;

[0013] By cooperating with the second connecting rod, the sleeve rod, the heat dissipation hole and the anti-deformation column, the welding between the second connecting rod and the second connecting rod fully utilizes the advantages of large bearing capacity and rigidity of the welding node, relatively light node body mass, and high construction efficiency and construction quality of the bolt connection node, and prevents welding deformation by cooperating with the sleeve rod, the heat dissipation hole and the anti-deformation column. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the central connecting piece of the present invention;

[0017] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0018] Figure 4 This is a schematic diagram of a rectangular tube single-layer lattice shell structure of a hybrid connection form of the present invention;

[0019] Figure 5 This is a schematic diagram of the welding node structure of the utility model.

[0020] Description of reference numerals:

[0021] 1. Center connector; 2. Bolt connection node; 201. Connecting rod 1; 202. Buffer pad; 203. Connecting bolt; 204. Threaded hole; 205. Offset plate; 3. Upper edge plate; 4. Mounting slot; 5. Lower edge plate; 6. Reinforcement rib; 7. Protective plate; 8. Welding node; 9. Connecting rod 2; 10. Sleeve rod; 11. Heat dissipation hole; 12. Anti-deformation column. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The utility model provides Figure 1-5 The rectangular tube single-layer lattice shell structure of a hybrid connection form shown in the figure includes a central connecting member 1, a bolt connection node 2 is installed inside the central connecting member 1, and the bolt connection node 2 includes a plurality of groups of connecting rods 201 installed inside the central connecting member 1 and the outer wall of the connecting rod 201 is fixedly connected to the limiting ring to facilitate the centralized installation of workers. The end of the connecting rod 201 located inside the central connecting member 1 is fixedly connected to the offset plate 205. The height of the offset plate 205 of each group of connecting rods 201 is different from each other to prevent the offset plates 205 between the connecting rods 201 from interfering with each other. The surface of the offset plate 205 is open. There are four groups of threaded holes 204, and a buffer pad 202 is set above the threaded hole 204. The buffer pad 202 is fixedly connected to the top of the central connecting member 1. The internal thread of the buffer pad 202 is connected with a connecting bolt 203. The connecting bolt 203 is threadedly connected to the threaded hole 204 at the same time. The stacking relationship between the offset plates 205 is utilized to make the connecting bolt 203 and the offset plate 205 threadedly connected. Not only does it simplify the connection process, but it also improves the connection strength through the mutual support between the offset plates 205. The outer side of the central connecting member 1 is provided with several groups of mounting grooves 4, and the connecting rod 201 is inserted into the inner part of the mounting groove 4 , the installation of the connecting rod 201 is completed through the installation groove 4, and the pre-installation of the connecting rod 201 is achieved by inserting the part of the connecting rod 201 into the interior of the installation groove 4 until the limit ring. The top of the central connecting member 1 is fixedly connected to the upper edge plate 3, the bottom end of the central connecting member 1 is fixedly connected to the lower edge plate 5, and the bottom end of the lower edge plate 5 is fixedly connected to the reinforcing rib 6. The strength of the structure is enhanced by the cooperation between the lower edge plate 5 and the reinforcing rib 6. The top wall of the central connecting member 1 is fixedly connected to the protective plate 7. The protective plate 7 is located between the buffer pad 202 and the dislocation plate 205. The connecting bolts 20 3 is reinforced with support and protection on the outside of the central connector 1. Through the cooperation between the central connector 1 and the bolt connection node 2, and through the cooperation between the central connector 1 and the installation groove 4, the connecting rod 201 with the offset plates 205 of different heights is installed in sequence inside the central connector 1, so that alignment is achieved with the help of the limit ring on the outside of the connecting rod 201, and the connection between the connecting rod 201 and the central connector 1 is completed at one time through the cooperation between the connecting bolts 203 and the threaded holes 204, and the closely stacked offset plates 205 are used to support each other, thereby reducing the use of bolts, reducing the dead weight and improving the connection strength.

[0024] Refer to the instruction manual Figure 1-5, a plurality of groups of welding nodes 8 are provided on the outside of the central connecting member 1, and a connecting rod 29 is welded at both ends of the welding node 8. The connection between the welding node 8 and other parts is realized by the connecting rod 29, and a plurality of groups of anti-deformation columns 12 are fixedly connected to the inner wall of the connecting rod 29. The outer wall of the connecting rod 29 is provided with a sleeve rod 10, and a heat dissipation hole 11 is provided on the surface of the sleeve rod 10. The heat dissipation hole 11 is used to strengthen the heat dissipation of the structure by cooperating with the sleeve rod 10 and prevent the deformation of the connecting rod 29 during welding by cooperating with the sleeve rod 10. By cooperating with the connecting rod 29, the sleeve rod 10, the heat dissipation hole 11 and the anti-deformation column 12, the welding between the connecting rod 29 and the connecting rod 29 fully utilizes the advantages of large bearing capacity and rigidity of the welding node 8, relatively light node body mass and high construction efficiency and construction quality of the bolt connection node 2, and prevents welding deformation by cooperating with the sleeve rod 10, the heat dissipation hole 11 and the anti-deformation column 12.

[0025] This utility works as follows:

[0026] Refer to the instruction manual Figure 1-5 In order to ensure the construction quality and improve the construction efficiency, when installing the bolt connection node 2, first insert the part of the connecting rod 1 201 into the interior of the installation groove 4 until the limit ring, so that the installation groove 4 can simply limit the outer side of the connecting rod 1 201, thereby realizing the pre-installation of the connecting rod 1 201, and then make the connecting rod 1 201 with the offset plates 205 of different heights be installed in sequence inside the central connecting member 1, and by installing the connecting bolts 203 inside the buffer pad 202 so that they match with the threaded holes 204, the connection between the connecting rod 1 201 and the central connecting member 1 is completed at one time, and at the same time, the offset plates 205 stacked tightly are used to support each other, thereby reducing the use of bolts, reducing the dead weight and improving the connection strength, and using the buffer pad 202 to provide a buffer for the contact position of the connecting bolt 203 and the central connecting member 1 to avoid deformation caused by collision between the two;

[0027] At the same time, when it is necessary to install the welding node 8, the heat dissipation of the structure is enhanced by the cooperation of the heat dissipation hole 11 and the sleeve rod 10, and the sleeve rod 10 is used to support the connecting rod 2 9 inside the connecting rod 2 9 to prevent the connecting rod 2 9 from deforming during welding, thereby fully utilizing the advantages of the welding node 8 with large bearing capacity and rigidity, relatively light node body mass, and high construction efficiency and construction quality of the bolt connection node 2, thereby improving the overall strength and installation convenience of the structure.

[0028] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rectangular tube single-layer lattice shell structure with a mixed connection form, comprising a central connecting member (1), characterized in that: A bolt connection node (2) is installed inside the central connecting member (1), and the bolt connection node (2) includes several groups of connecting rods (201) installed inside the central connecting member (1), and the outer wall of the connecting rod (201) is fixedly connected to a limiting ring. One end of the connecting rod (201) located inside the central connecting member (1) is fixedly connected to a dislocation plate (205), and the dislocation plates (205) of each group of the connecting rods (201) have different heights. Four groups of threaded holes (204) are opened on the surface of the dislocation plate (205), and a buffer pad (202) is provided above the threaded hole (204). The buffer pad (202) is fixedly connected to the top of the central connecting member (1), and the internal thread of the buffer pad (202) is connected to a connecting bolt (203), and the connecting bolt (203) is simultaneously threadedly connected to the threaded hole (204).

2. The hybrid-connected rectangular tube single-layer lattice shell structure according to claim 1, characterized in that: The outer side of the central connecting member (1) is provided with a plurality of mounting grooves (4), and the connecting rod 1 (201) is inserted into the interior of the mounting grooves (4).

3. The hybrid-connected rectangular tube single-layer lattice shell structure according to claim 1, characterized in that: The top end of the central connecting member (1) is fixedly connected to an upper edge plate (3), the bottom end of the central connecting member (1) is fixedly connected to a lower edge plate (5), and the bottom end of the lower edge plate (5) is fixedly connected to a reinforcing rib (6).

4. The hybrid-connected rectangular tube single-layer lattice shell structure according to claim 1, characterized in that: A protective plate (7) is fixedly connected to the top wall of the central connecting member (1), and the protective plate (7) is located between the buffer pad (202) and the offset plate (205).

5. The hybrid-connected rectangular tube single-layer lattice shell structure according to claim 1, characterized in that: Several groups of welding nodes (8) are provided on the outside of the central connecting member (1), and two connecting rods (9) are welded to both ends of the welding nodes (8).

6. The hybrid-connected rectangular tube single-layer lattice shell structure according to claim 5, characterized in that: The inner side wall of the second connecting rod (9) is fixedly connected with a plurality of groups of anti-deformation columns (12), and the outer side wall of the second connecting rod (9) is sleeved with a sleeve rod (10), and the surface of the sleeve rod (10) is provided with heat dissipation holes (11).

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