Net rack support for mounting steel net rack

Abstract

A net rack support for installing a steel net rack comprises a spherical ball seat body (1), a plurality of net rack rod connecting bodies (2) are evenly distributed and installed on the ball seat body (1), and lengthened net rack rods (3) are connected to the outer ends of the net rack rod connecting bodies (2) in a sleeved mode. The net rack support is simple in structure, the connecting head (201) and the net rack rod installation hole (101) are fixed in a welded mode, the net rack rod connecting body (2) and the lengthened net rack rod (3) are fixed in a welded mode, the structural strength is high after installation, and the net rack support is not prone to falling off when strong disasters happen.

Description

Technical Field

[0001] The utility model relates to the technical field of steel grid installation, in particular to a grid support for steel grid installation. Background Art

[0002] Steel grid is a spatial structure formed by connecting multiple rods through nodes in a certain grid form. It has the advantages of small spatial force, light weight, high rigidity, and good seismic performance. It can be used as the roof of gymnasiums, theaters, exhibition halls, waiting halls, stadium stand awnings, hangars, two-way large column spacing workshops and other buildings. The disadvantage is that there are more rods converging on the nodes, and the production and installation are more complicated than the plane structure.

[0003] There are many types of grid structures, which can be classified according to different standards.

[0004] 1. According to the structure of the grid itself, it can be divided into: single-layer grid structure, double-layer grid structure and three-layer grid. Among them, the single-layer grid and the three-layer grid are respectively suitable for the situation of very small span (no more than 30m) and very large span (more than 100m), and are rarely used in domestic engineering applications.

[0005] 2. According to the construction materials, it is divided into: steel grid, aluminum grid, wooden grid, plastic grid, reinforced concrete grid and combined grid (such as combined grid in which steel grid and reinforced concrete slab work together, etc.). Among them, steel grid has been widely used in my country, and combined grid can also be used as floor layer structure.

[0006] 3. According to the support conditions, it can be divided into: peripheral support, four-point support, multi-point support, three-side support, opposite side support and mixed support.

[0007] 4. According to different composition methods, the grid can be divided into four categories: 1. Cross truss system grid; 2. Triangular pyramid system grid; 3. Quadrangular pyramid system grid; 4. Hexagonal pyramid system grid.

[0008] Among them, the fourth classification method is currently a more popular classification method in China.

[0009] The most commonly used part in steel grid installation is the grid support. The current structure is relatively complex, and the structural strength after installation is low, and it is easy to fall off when a severe disaster occurs. Utility Model Content

[0010] In order to solve the above problems existing in the prior art, the utility model provides a grid support for installing a steel grid.

[0011] The technical solution adopted by the utility model to solve its technical problems is:

[0012] A grid support for installing a steel grid comprises a spherical ball seat body 1, on which a plurality of grid rod connectors 2 are evenly installed, and the outer ends of the plurality of grid rod connectors 2 are sleeved with extended grid rods 3.

[0013] The utility model also has the following additional technical features:

[0014] As a further specific optimization of the technical solution of the utility model: a plurality of grid rod mounting holes 101 with internal threads are arranged on the ball seat body 1.

[0015] As a further specific optimization of the technical solution of the utility model: the grid rod connector 2 is a hollow cylindrical steel rod, one end face of which is a connector 201 with external threads.

[0016] As a further specific optimization of the technical solution of the utility model: the connecting head 201 is spirally installed in the grid rod installation hole 101, and the connection between the connecting head 201 and the grid rod installation hole 101 is fixed by welding.

[0017] As a further specific optimization of the technical solution of the utility model: the inner diameter of the grid rod connector 2 is greater than the outer diameter of the lengthened grid rod 3.

[0018] As a further specific optimization of the technical solution of the utility model: the connection between the grid rod connector 2 and the extended grid rod 3 is fixed by welding.

[0019] As a further specific optimization of the technical solution of the utility model: the lower chords of the steel grid are supported on the top of the steel lattice column through grid supports, and the center elevation of the grid supports is +18.000m;

[0020] As a further specific optimization of the technical solution of the utility model: the specification range of the ball seat body 1 is WS3008-WSR8035; the specification range of the truss rod connector 2 and the extended truss rod 3 is P76×3.75~P245×16mm; the maximum single weight of the extended truss rod 3 is 353.88kg, and the maximum length of the extended truss rod 3 is 5.5 meters.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The grid support of the utility model has a relatively simple structure, and the connection between the connecting head 201 and the grid rod mounting hole 101 is fixed by welding, and the connection between the grid rod connector 2 and the extended grid rod 3 is fixed by welding. After installation, the structure has high strength and is not easy to fall off when a severe disaster occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the structure of a grid support for installing a steel grid according to the utility model;

[0024] Figure 2 It is a structural schematic diagram of the ball seat body 1 and the grid rod connecting body 2 of the utility model;

[0025] Figure 3 This is a schematic structural diagram of the ball seat body 1 of the utility model;

[0026] Figure 4 This is a schematic structural diagram of a grid rod connector 2 of the utility model;

[0027] Description of the accompanying drawings: ball seat body 1, grid rod connecting body 2, lengthened grid rod 3. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0029] A grid support for installing a steel grid comprises a spherical ball seat body 1, on which a plurality of grid rod connectors 2 are evenly installed, and the outer ends of the plurality of grid rod connectors 2 are sleeved with extended grid rods 3.

[0030] The ball seat body 1 is provided with a plurality of grid rod mounting holes 101 with internal threads. The grid rod connector 2 is a hollow cylindrical steel rod, one end face of which is a connector 201 with external threads. The connector 201 is screwed into the grid rod mounting hole 101, and the connection between the connector 201 and the grid rod mounting hole 101 is fixed by welding.

[0031] The inner diameter of the grid rod connector 2 is larger than the outer diameter of the extended grid rod 3. The connection between the grid rod connector 2 and the extended grid rod 3 is fixed by welding. The lower chords of the steel grid are supported on the top of the steel lattice column by grid supports, and the center elevation of the grid supports is +18.000m.

[0032] The specification range of the ball seat body 1 is WS3008-WSR8035; the specification range of the grid rod connector 2 and the extended grid rod 3 is P76×3.75~P245×16mm; the maximum single weight of the extended grid rod 3 is 353.88kg, and the maximum length of the extended grid rod 3 is 5.5 meters.

[0033] When in use, the grid is assembled in situ on the ground and then hoisted as a whole. Most grid assemblies are assembled manually, with an assembly height of 0.5m to 4.5m above the ground. The grid is assembled in the following way: first the lower chord ball node and the lower chord rod, then the upper chord ball node, and finally the upper chord rod and the web rod; the general direction of grid assembly is to spread from the middle to the surroundings. Some ball seat bodies 1 have lower hanging points, which are welded before lifting and then lifted into place with the overall grid.

[0034] In order to reduce the accumulated errors of the welded ball grid during the assembly process, the assembly of the lower chord of the overall grid should start from the center, assemble the longitudinal and transverse axes first, and correct the dimensions at any time. It can be expanded from the center to the surrounding areas only when it is considered correct. The allowable error of the diagonal (small unit) is required to be ±3mm, the offset of the lower chord node is 2mm, and the overall longitudinal and transverse deviation values ​​shall not be greater than ±2mm.

[0035] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention but merely represents selected embodiments of the present invention.

Claims

1. A grid support for steel grid installation, characterized in that: The grid support comprises a spherical ball seat body (1), on which a plurality of grid rod connectors (2) are evenly distributed and mounted, and the outer ends of the plurality of grid rod connectors (2) are sleeved with extended grid rods (3); the ball seat body (1) is provided with a plurality of grid rod mounting holes (101) with internal threads; the grid rod connector (2) is a hollow cylindrical steel rod, one end face of which is a connector (201) with external threads; the connector (201) is screwed into the grid rod mounting hole (101), and the connection between the connector (201) and the grid rod mounting hole (101) is fixed by welding; the inner diameter of the grid rod connector (2) is larger than the outer diameter of the extended grid rod (3); the connection between the grid rod connector (2) and the extended grid rod (3) is fixed by welding.

2. A steel grid support for installation according to claim 1, characterized in that: The lower chords of the steel grid are supported on the top of the steel lattice columns through grid supports, and the center elevation of the grid supports is +18.000m.

3. The steel grid support according to claim 1, characterized in that: The specification range of the ball seat body (1) is WS3008-WSR8035; the specification range of the grid rod connector (2) and the extended grid rod (3) is P76×3.75~P245×16mm; the maximum single weight of the extended grid rod (3) is 353.88kg, and the maximum length of the extended grid rod (3) is 5.5 meters.

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