Space grid structure connecting joint and manufacturing method thereof

Abstract

The invention relates to a space grid structure connecting joint and a manufacturing method thereof, and belongs to the technical field of constructional engineering, the space grid structure connecting joint comprises joint assemblies, and a rod piece assembly is arranged between every two adjacent joint assemblies. The joint assembly comprises a welding ball, a bracket steel pipe and a joint butt joint piece. The rod piece assembly comprises a rod piece, and rod piece butt joint pieces fixedly connected with the node butt joint pieces are arranged at the two ends of the rod piece. The node butt joint piece and the rod piece butt joint piece are fixedly connected through a fastener. A plurality of stiffening plates are arranged between the bracket steel pipe and the joint butt joint piece and between the rod pieces and the rod piece butt joint piece. The device has the advantages of being compact in structure and good in structural stability, and solves the problem of coping with saline-alkali, humid and other corrosive environments. An existing production line is slightly changed, the training cost of workers is low, and good economic benefits are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a space grid structure connection node and a manufacturing method thereof. Background Art

[0002] Space grid structures are often faced with corrosion problems when used in offshore photovoltaics, sewage treatment plants, open-air structures and other fields. Saline and humid environments pose challenges to the safety and service life of the structures. Galvanizing of steel structures is currently the main measure to deal with this problem, but the effect is not good. According to the characteristics of the construction process, if on-site welding can be avoided, the protective effect of galvanizing can be greatly improved.

[0003] Using aluminum alloy instead of steel is another way to deal with the corrosion problem. However, aluminum alloy has problems such as large welding affected area and large strength drop after welding, which makes it not suitable for on-site welding. Summary of the invention

[0004] The present invention mainly solves the deficiencies in the prior art and provides a spatial grid structure connection node and a manufacturing method thereof, which has the advantages of compact structure and good structural stability, and solves the problem of dealing with saline, alkali, humid and other corrosive environments. The existing production line can be modified less, the training cost of workers is low, and it has good economic benefits.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: A spatial grid structure connection node includes a node assembly, and a rod assembly is arranged between two adjacent node assemblies. The node assembly includes a welding ball, a corbel steel pipe, and a node docking piece. The rod assembly includes a rod, and both ends of the rod are provided with a rod docking piece connected and fixed to the node docking piece. The node docking piece and the rod docking piece are fixedly connected by fasteners.

[0006] Preferably, a plurality of stiffening plates are provided between the corbel steel pipe and the node joint pieces, and between the rods and the rod joint pieces.

[0007] Preferably, the node joints and rod joints are made of circular plates or polygonal plates. The bracket steel pipes and rods are made of circular pipes, rectangular pipes, H-shaped steels, I-shaped steels or cross-shaped steels in whole or in part.

[0008] Preferably, the fasteners are high-strength bolts, rivets or ring-groove rivets.

[0009] Preferably, the node assembly and the rod assembly are both manufactured in a factory, and are connected to each other by fasteners during on-site installation, so that on-site installation is completed, and no welding operation is required during the on-site installation process.

[0010] The method for making a spatial grid structure connection node includes the following steps for making a node component: Step 1: According to the structural design drawings, derive the size and orientation of the rods, determine the orientation of the corbel steel pipe, and determine the size of the corbel steel pipe according to the principle of equal strength and the principle of strong nodes and weak rods.

[0011] Step 2: Input the weld information according to the size and orientation of the corbel steel pipe connected by the welding ball in each node component, and calculate the initial size of the required welding ball according to the principle of no collision.

[0012] Step 3: Derive the stress of each corbel steel pipe, calculate the size of the welding ball according to the stress, and finally determine the size and wall thickness of the welding ball.

[0013] Step 4: Calculate the number and specifications of fasteners based on the forces on each corbel steel pipe, and then determine the size and hole position of the required node joint parts based on the size of the corbel steel pipe.

[0014] Step 5: According to the final size of the welding ball, the size of the node docking piece, the size of the corbel steel pipe, and the orientation of the corbel steel pipe, calculate the length of the corbel steel pipe in accordance with the principle of no collision and leaving construction space.

[0015] Step 6: Select the largest-sized corbel steel pipe connected to each welding ball as the reference pipe, issue a processing drawing, and mark the welding ball size, corbel steel pipe size, corbel steel pipe orientation, corbel steel pipe length, and node docking piece size.

[0016] Step 7: According to the processing drawing, complete the production of welding balls, cutting of corbel steel pipes, and cutting of node docking parts.

[0017] Step 8: According to the processing drawing, drill holes on the node joint parts, weld the node joint parts to the bracket steel pipe, and then weld the bracket steel pipe to the welding ball.

[0018] Step 9: Fix the node assembly on the machine tool through the reference corbel steel pipe, and continue to weld the remaining corbel steel pipes according to the corbel steel pipe size and corbel steel pipe orientation in the processing drawing.

[0019] Step 10: Carry out anti-corrosion treatment on the processed node components.

[0020] The method for making a connection node of a spatial grid structure includes the following steps for making a rod component: Step 1: According to the theoretical length of the rod, extract the size of the welding ball, the length of the bracket steel pipe, and the size of the node docking part in the node assembly processing drawing, and calculate the length of the rod in the rod assembly.

[0021] Step 2: Prepare a processing drawing, mark the size and length of the rods, and the size of the rod joints.

[0022] Step 3: Complete the cutting of rods and rod joints according to the processing drawings.

[0023] Step 4: According to the processing drawing, drill holes on the rod joints and weld the rod joints on the rods.

[0024] Step 5: Carry out anti-corrosion treatment on the processed rod components.

[0025] Preferably, the welding balls, the corbel steel pipes, the node joints, the fasteners, the rods, and the rod joints are all or partially made of aluminum alloy or titanium alloy.

[0026] The present invention can achieve the following effects: The present invention provides a spatial grid structure connection node and a manufacturing method thereof, which has the advantages of compact structure and good structural stability compared with the prior art, and solves the problem of dealing with saline, alkali, humid and other corrosive environments. The existing production line can be modified less, the training cost of workers is low, and good economic benefits are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 2 Schematic diagram of a node assembly of the present invention.

[0029] Figure 3 It is a schematic diagram of a rod assembly of the present invention.

[0030] Figure 4 It is a schematic diagram of a basic docking piece of the present invention.

[0031] Figure 5 The reinforced docking piece of the present invention is shown in FIG. Figure 1 .

[0032] Figure 6 The reinforced docking piece of the present invention is shown in FIG. Figure 2 .

[0033] Figure 7 It is a flow chart of the manufacturing method of the present invention.

[0034] Figure 8 It is the material table of the processing drawing of the present invention.

[0035] Fig. 9 The present invention is a processing description of the butt joint member.

[0036] Fig.10 The invention provides a processing description of the rod component.

[0037] Fig.11 This is a processing diagram of the node assembly of the present invention.

[0038] Fig.12 It is an illustration of the processing diagram of the node assembly of the present invention.

[0039] Fig.13 It is a schematic diagram of the node assembly system processing of the present invention.

[0040] In the figure: welding ball 1, corbel steel pipe 2, node joint piece 3, rod 4, rod joint piece 5, fastener 6, stiffening plate 7. DETAILED DESCRIPTION

[0041] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0042] Example: Figure 1 , Figure 2 and Figure 3 As shown, a spatial grid structure connection node includes a node assembly, and a rod assembly is arranged between two adjacent node assemblies. The node assembly includes a welding ball 1, a corbel steel pipe 2, and a node docking member 3. The rod assembly includes a rod 4, and both ends of the rod 4 are provided with a rod docking member 5 connected and fixed to the node docking member 3. The node docking member 3 and the rod docking member 5 are made of circular plates or polygonal plates. The corbel steel pipe 2 and the rod 4 are all or partially made of circular tubes, rectangular tubes, H-shaped steels, I-shaped steels, or cross-shaped steels.

[0043] like Figure 4 , Figure 5 and Figure 6 As shown, the node joint member 3 and the rod joint member 5 are fixedly connected by fasteners 6, and the fasteners 6 are high-strength bolts, rivets or ring groove rivets. Stiffening plates 7 are provided between the bracket steel pipe 2 and the node joint member 3, and between the rod 4 and the rod joint member 5. During on-site installation, the node assembly and the rod assembly are connected by fasteners 6 to complete the on-site installation, and no welding operation is required during the on-site installation process.

[0044] like Figure 7As shown, the production of node components and rod components is carried out according to the process, which is generally divided into three stages: detailed design stage, processing stage, and construction stage. In the detailed design stage, according to the structural drawings issued in the structural design stage, the node component needs to determine the size of the welding ball 1, the size and orientation of the corbel steel pipe 2, the length of the corbel steel pipe 2, the number and specifications of the fasteners 6, the size and opening position of the node docking piece 3. The rod component needs to determine the cutting length of the rod 4. After the detailed design is completed, a processing drawing is issued. In the processing stage, according to the processing drawings, the node components and rod components are made separately. First, according to the processing drawings, the welding ball 1, the corbel steel pipe 2, the node docking piece 3, the rod 4 and the rod docking piece 5 are made. Then the node docking piece 3 and the rod docking piece 5 are welded to the corbel steel pipe 2 and the rod 4 respectively, and finally the component composed of the node docking piece 3 and the corbel steel pipe 2 is welded to the welding ball 1. In the construction stage, the two are connected on site using fasteners 6.

[0045] like Figure 8 As shown in the figure, the result of the detailed design of the rod assembly is the material table. The material table indicates the specifications and length of the rod 4 and the rod joints 5 at both ends. The parameters of the node joint 3 and the rod joint 5 are in the form of "C*K*", where "C*" represents the size of the joint and "K*" represents the hole azimuth and whether there is a stiffening plate 7. The detailed parameters are obtained by querying the material table.

[0046] like Fig. 9 As shown, the parameters of the node joint 3 and the rod joint 5 include the joint specifications, the number of holes, the hole diameter, and the hole center distance. The hole center distance refers to the diameter of the circumscribed circle of the polygon formed by the hole center connection line.

[0047] like Fig.10 As shown, the rod-jointing pieces 5 at both ends of the rod 4 are arranged one below and the other above, and when viewed from top to bottom, the hole azimuth angle of the lower rod-jointing piece 5 is 0°, and the hole azimuth angle of the upper rod-jointing piece 5 is the clockwise angle between the first hole and the first hole of the lower rod-jointing piece 5. During processing, the rod 4 and the rod-jointing piece 5 are cut first, and then the lower connecting rod-jointing piece 5 is welded first according to the drawing, and then the lower rod-jointing piece 5 is welded.

[0048] like Figure 8 and Fig.11As shown, the results of the in-depth design of the node component are the material list and the node component processing drawing. The name of the node component processing drawing is marked with the ball number. The size of the welded ball 1 can be known by querying the material list. The corbel steel pipe 2 in the center of the processing drawing is the reference pipe. The parameters of the reference pipe are shown in the notes below the name of the drawing. The orientation and parameters of the corbel steel pipes 2 other than the reference pipe are also marked in the processing drawing, where the orientation of the corbel steel pipe 2 includes longitude and latitude. The parameters of the corbel steel pipe 2 are in the form of "P*C*K*", where "P*" represents the length of the corbel steel pipe 2, "C*" represents the size of the node docking piece 3, and "K*" represents the hole azimuth and whether there is a stiffening plate 7. Query the material table to obtain detailed parameters.

[0049] like Fig.12 As shown, the longitude and latitude of the corbel steel pipe 2 are indicated in the node assembly processing diagram. The first hole on the reference pipe in the center of the node assembly processing diagram faces upward, that is, the hole azimuth of the reference pipe is 0°, and the entire node processing diagram is drawn based on this. The hole azimuths on other corbel steel pipes 2 are taken as 0 along the meridian starting from the reference pipe, and the clockwise angle between the first hole and the meridian is the hole azimuth.

[0050] like Fig.13 As shown, when welding the bracket steel pipe 2, the bracket steel pipe 2 of the reference pipe is welded first, and then the other bracket steel pipes 2 are welded. The node assembly is fixed to the machine tool with bolts using the holes on the node docking piece 3, and then welded in sequence according to the orientation and hole azimuth of each bracket steel pipe 2 in the processing drawing, and special attention should be paid to the accuracy here.

[0051] The processed node components and rod components are subjected to anti-corrosion treatment and then transported to the site. At the site, the node components and rod components are connected with fasteners 6 according to the spatial positions of the node components and rod components to form a spatial entity.

[0052] In summary, the spatial grid structure connection node and its manufacturing method have the advantages of compact structure and good structural stability, and solve the problem of dealing with saline, alkali, humid and other corrosive environments. The existing production line can be modified less, the training cost of workers is low, and it has good economic benefits.

[0053] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A spatial grid structure connecting nodes, characterized in that: It comprises a node assembly, wherein a rod assembly is provided between two adjacent node assemblies; the node assembly comprises a welding ball (1), a corbel steel pipe (2) and a node docking piece (3); the rod assembly comprises a rod (4), and both ends of the rod (4) are provided with a rod docking piece (5) connected and fixed to the node docking piece (3); the node docking piece (3) and the rod docking piece (5) are fixedly connected by a fastener (6).

2. The spatial grid structure connection node according to claim 1, characterized in that: A plurality of stiffening plates (7) are provided between the corbel steel pipe (2) and the node joint piece (3), and between the rod (4) and the rod joint piece (5).

3. The spatial grid structure connection node according to claim 1 or 2, characterized in that: The node joint member (3) and the rod joint member (5) are made of circular plates or polygonal plates; the bracket steel pipe (2) and the rod member (4) are wholly or partially made of circular pipes, rectangular pipes, H-shaped steels, I-shaped steels or cross-shaped steels.

4. The spatial grid structure connection node according to claim 1, characterized in that: The fastener (6) is a high-strength bolt, a rivet or a ring groove rivet.

5. The spatial grid structure connection node according to claim 3, characterized in that: The node assembly and the rod assembly are both manufactured in a factory. During on-site installation, the node assembly and the rod assembly are connected by fasteners (6) to complete the on-site installation. No welding operation is required during the on-site installation process.

6. A method for manufacturing a spatial grid structure connection node according to claim 5, characterized in that The following steps are included for making node components: Step 1: According to the structural design drawings, the size and orientation of the rod (4) are derived, the orientation of the corbel steel pipe (2) is determined, and the size of the corbel steel pipe (2) is determined according to the principle of equal strength and the principle of strong nodes and weak rods; Step 2: Input the weld information according to the size and orientation of the corbel steel pipe (2) connected by the welding ball (1) in each node assembly, and calculate the initial size of the required welding ball (1) according to the principle of no collision; Step 3: derive the forces of each bracket steel pipe (2), calculate the size of the welding ball (1) according to the forces, and finally determine the size and wall thickness of the welding ball (1); Step 4: Calculate the number and specifications of the fasteners (6) according to the forces on each corbel steel pipe (2), and then determine the size and hole position of the required node docking piece (3) according to the size of the corbel steel pipe (2); Step 5: Based on the final size of the welding ball (1), the size of the node joint (3), the size of the corbel steel pipe (2), and the orientation of the corbel steel pipe (2), the length of the corbel steel pipe (2) is calculated in accordance with the principle of avoiding collision and leaving construction space; Step 6: Select the largest-sized corbel steel pipe (2) connected to each welding ball (1) as the reference pipe, issue a processing drawing, and mark the size of the welding ball (1), the size of the corbel steel pipe (2), the position of the corbel steel pipe (2), the length of the corbel steel pipe (2), and the size of the node joint (3); Step 7: According to the processing drawing, complete the production of welding balls (1), cutting of bracket steel pipes (2), and cutting of node joint parts (3); Step 8: according to the processing drawing, a hole is opened on the node joint piece (3), the node joint piece (3) is welded to the bracket steel pipe (2), and then the bracket steel pipe (2) is welded to the welding ball (1); Step 9: Fix the node assembly on the machine tool through the reference bracket steel pipe (2), and continue to weld the remaining bracket steel pipes (2) according to the size and orientation of the bracket steel pipe (2) in the processing drawing; Step 10: Carry out anti-corrosion treatment on the processed node components.

7. A method for manufacturing a spatial grid structure connection node according to claim 6, characterized in that The steps for making the rod assembly are as follows: Step 1: Based on the theoretical length of the rod (4), the size of the welding ball (1), the length of the bracket steel pipe (2), and the size of the node docking piece (3) in the node assembly processing diagram are extracted to calculate the length of the rod (4) in the rod assembly; Step 2: Produce a processing drawing, mark the size and length of the rod (4), and the size of the rod joint (5); Step 3: According to the processing drawing, the rod (4) and the rod docking piece (5) are cut; Step 4: according to the processing drawing, a hole is opened on the rod joint piece (5), and the rod joint piece (5) is welded on the rod (4); Step 5: Carry out anti-corrosion treatment on the processed rod components.

8. The method for making a spatial grid structure connection node according to claim 7, characterized in that: The welding ball (1), the bracket steel pipe (2), the node joint piece (3), the fastener (6), the rod (4), and the rod joint piece (5) are all or partially made of aluminum alloy or titanium alloy.

Images