Connecting structure of pipe truss and net rack

Abstract

The utility model discloses a pipe truss and net rack connecting structure, including main pipe, branch pipe, net rack web member, corbels, first connecting piece, second connecting piece, wherein a plurality of branch pipes are welded on one side of the main pipe, a plurality of corbels are welded on the other side of the main pipe, the first connecting piece is installed on the corbels, one end of the net rack web member is provided with the second connecting piece, and the other end of the net rack web member is provided with the second connecting piece. The second connecting piece and the first connecting piece are detachably connected. According to the structure, the bracket at the position in butt joint with the net rack is reserved on the main pipe, and the first connecting piece is arranged in the bracket, so that the bracket can be in threaded connection with the second connecting piece on the net rack web member of the net rack, the construction difficulty is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of connection between a tube truss and a grid frame, and more specifically, to a connection structure between a tube truss and a grid frame. Background Art

[0002] The spatial grid system has greater spatial rigidity and integrity, and can be designed and constructed according to different support conditions and building requirements. In addition, it is easy to make and install, and reduces the use of steel and the weight of the structure, making it widely used in large-span buildings. The connection between pipe trusses and grids is often used in large-span complexes, so handling this node well can better ensure the progress and quality of large-scale projects.

[0003] At present, there are three connection methods for the connection nodes of tube trusses and grids:

[0004] 1. Use bolt balls for connection: Although bolt ball nodes have a high degree of factory processing and can shorten the construction period, they are greatly affected by the angle during design. When the angle is not good, the bolt ball is very large, and the bolt ball is a solid ball with a large unit weight. It is difficult to install on site and requires a large amount of steel.

[0005] 2. Use welding balls for connection: Although the welding ball nodes have clear force transmission and simple structure, they use a large amount of steel, are labor-intensive to stamp and weld, have high welding quality requirements, and have low on-site construction efficiency.

[0006] 3. Use hub-type nodes for connection: Although the hub-type node has a simple structure and high construction efficiency, it is a one-way rigid node, which is prone to local instability in the plane. Moreover, due to the severe weakening of the rod ends, it is also easy to be damaged at the tightening part of the rod ends.

[0007] Therefore, in actual engineering, traditional tube truss and grid connection nodes cannot meet the requirements of safety and convenience at the same time, and it is urgent to invent a new tube truss and grid connection method to solve this problem. Utility Model Content

[0008] In order to achieve these purposes and other advantages according to the utility model, a preferred embodiment of the utility model provides a connection structure of a pipe truss and a grid, including a main pipe, a branch pipe, a grid web bar, a corbel, a first connecting member, and a second connecting member;

[0009] Among them, multiple branch pipes are welded on one side of the main pipe, multiple brackets are welded on the other side of the main pipe, a first connecting piece is installed on the bracket, a second connecting piece is installed on one end of the truss web, and the second connecting piece and the first connecting piece are detachably connected.

[0010] Preferably, the first connecting member has a threaded through hole, and the second connecting member has a screw that can be inserted into the threaded through hole. The screw can be inserted into the threaded through hole and welded to achieve a fixed connection between the first connecting member and the second connecting member.

[0011] Preferably, the first connecting member comprises a corbel end plate and a stiffening plate, with a sleeve vertically arranged between the two, and the second connecting member comprises a truss web end plate and a screw rod vertically connected to the truss web end plate.

[0012] Preferably, a nut is sleeved on the screw rod of the second connecting member, and when the screw rod is inserted into the threaded through hole of the first connecting member, the nut is located outside the threaded through hole.

[0013] Preferably, the angle between the main pipe and the branch pipe or the axis of the branch pipe is greater than or equal to 30°.

[0014] Preferably, the web bars of the grid and the corbels have the same diameter.

[0015] Preferably, the center of the branch pipe coincides with the center of the main pipe.

[0016] The utility model has at least the following beneficial effects: in this structure, a bracket is reserved on the main pipe for docking with the grid, and a first connector is arranged in the bracket, so that it can be threadedly connected with a second connector on the grid web of the grid, thereby reducing the construction difficulty and improving the construction efficiency. In addition, a nut is added to the screw rod of the second connector and welded to the screw rod, providing a force point for the wrench, reducing the construction difficulty and improving the construction efficiency.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the connection structure of the central tube truss and the grid frame of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the first connecting member in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the second connecting member in the utility model.

[0021] Figure 4 This is a schematic diagram of the first connecting member and the second connecting member before being connected and installed in the present invention.

[0022] Figure 5 This is a schematic diagram of the first connecting member and the second connecting member after being connected and installed in the utility model DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0024] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] like Figure 1-5 As shown, a preferred embodiment of the utility model provides a connection structure of a pipe truss and a grid, including a main pipe 1, a branch pipe 2, a grid web 3, a corbel 4, a first connection member 5, and a second connection member 6;

[0028] Among them, multiple branch pipes 2 are welded on one side of the main pipe 1, multiple corbels 4 are welded on the other side of the main pipe 1, a first connecting member 5 is installed on the corbel 4, and a second connecting member 6 is installed at one end of the truss web 3, and the second connecting member 6 and the first connecting member 5 are detachably connected.

[0029] In the above technical solution, a corbel 4 is reserved on the main pipe 1 for docking with the grid, and a first connector 5 is arranged in the corbel 4 so that it can be threadedly connected with a second connector 6 on the grid web 3 of the grid, thereby reducing construction difficulty and improving construction efficiency.

[0030] Main pipe 2 is part of the pipe truss. The connection welds between branch pipe 1 and main pipe 2, and between corbel 4 and main pipe 1, except for the overlap of branch pipe 2, shall comply with the provisions of Article 13.2.2 of the "Standard for Design of Steel Structures" GB50017-2017, and shall be continuously welded along the entire circumference and smoothly transitioned; the weld form may adopt fillet welds along the entire circumference, or partially adopt butt welds and partially adopt fillet welds. In the area where the angle between the branch pipe wall and the main pipe wall is greater than or equal to 120°, butt welds or fillet welds with grooves shall be adopted; the leg size of the fillet weld shall not be greater than 2 times the wall thickness of the branch pipe; the weld around the overlapping branch pipe shall be 2 times the wall thickness of the branch pipe. The size of the fillet weld shall be determined by calculation, and shall not be excessively increased when the stress conditions are met. The adverse effects of excessive welding shall be prevented by limiting the maximum leg size.

[0031] The external dimensions of the main pipe should not be smaller than the external dimensions of the branch pipe, and the wall thickness of the main pipe should not be smaller than the wall thickness of the branch pipe. The branch pipe must not be inserted into the main pipe at the connection between the branch pipe and the main pipe to avoid difficulties in weld processing.

[0032] In another technical solution, the first connecting member has a threaded through hole, and the second connecting member has a screw that can be inserted into the threaded through hole, and the screw can be inserted into the threaded through hole and welded to achieve a fixed connection between the first connecting member and the second connecting member. The first connecting member includes a corbel end plate 8 and a stiffening plate 9, with a sleeve 10 vertically arranged between the two, and the second connecting member includes a truss web end plate 11 and a screw 12 vertically connected to the truss web end plate.

[0033] The bracket end plate 8 is welded to the bracket 4. The screw rod should be plug-welded with the grid web end plate to ensure the safety of the structure.

[0034] In another technical solution, a nut 7 is sleeved on the screw of the second connecting member. After the screw is inserted into the threaded through hole of the first connecting member, the nut is located outside the threaded through hole. The length of the nut shall not be less than 45 mm, and space is reserved for the wrench for easy installation.

[0035] In the above technical solution, a nut is added to the screw rod of the second connecting member 6 and welded to the screw rod, which can provide a fulcrum for the wrench, reduce the construction difficulty and improve the construction efficiency.

[0036] In another technical solution, the angle between the main pipe and the branch pipe or the branch pipe axis is greater than or equal to 30°, which not only ensures the welding conditions and facilitates the root penetration of the weld, but also helps to reduce the tearing stress of the weld at the tip.

[0037] In another technical solution, the diameters of the web rods 3 and the corbels 4 are consistent, which can avoid damage to the tightened parts of the rod ends during use and ensure the safety and reliability of the structure.

[0038] In another technical solution, the center of the branch pipe coincides with the center of the main pipe, so as to minimize the stress generated when the two are welded.

[0039] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A connection structure of a tube truss and a grid, characterized in that: It includes a main pipe, a branch pipe, a web bar of a grid, a corbel, a first connecting piece, and a second connecting piece; Among them, multiple branch pipes are welded on one side of the main pipe, multiple brackets are welded on the other side of the main pipe, a first connecting piece is installed on the bracket, a second connecting piece is installed on one end of the truss web, and the second connecting piece and the first connecting piece are detachably connected.

2. The connection structure of the tube truss and the grid according to claim 1 is characterized in that: The first connecting member has a threaded through hole, and the second connecting member has a screw that can be inserted into the threaded through hole. The screw can be inserted into the threaded through hole and welded to achieve fixed connection between the first connecting member and the second connecting member.

3. The connection structure of the tube truss and the grid according to claim 2, characterized in that: The first connecting member includes a corbel end plate and a stiffening plate, with a sleeve vertically arranged between the two, and the second connecting member includes a truss web end plate and a screw rod vertically connected to the truss web end plate.

4. The connection structure of the tube truss and the grid according to claim 3 is characterized in that: A nut is sleeved on the screw rod of the second connecting member. After the screw rod is inserted into the threaded through hole of the first connecting member, the nut is located outside the threaded through hole.

5. The connection structure of the tube truss and the grid according to claim 1, characterized in that: The angle between the main pipe and the branch pipe or the branch pipe axis is greater than or equal to 30°.

6. The connection structure of the tube truss and the grid according to claim 1, characterized in that: The diameters of the web bars of the grid and the corbels are consistent.

7. The connection structure of the tube truss and the grid according to claim 1, characterized in that: The center of the branch pipe coincides with that of the main pipe.

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