A net rack ball node fast positioning welding bed and its using method

Abstract

This invention discloses a rapid positioning welding jig for spherical nodes in a space frame and its usage method, relating to the field of welded spherical space frame assembly construction technology. It includes a welding base, a member positioning device, an adjustable base for the support rod, a member support rod, and a top support. The welding base is used to place the welded sphere. The member positioning device is sleeved on the welded sphere to achieve precise layout of the contact position between the member and the welded sphere. The adjustable base for the support rod is arranged around the welding base, and the member support rod is installed on the adjustable base. The top support is hinged to the top of the member support rod to support one end of the member. The other end of the member is welded and fixed to the welded sphere. The rapid positioning welding jig for spherical nodes in a space frame provided by this invention and its usage method solve the problems of difficulty in ensuring positioning accuracy, cumbersome installation and dismantling of fixing devices, difficulty in moving them, high construction safety risks, and difficulty in controlling welding deformation in the prior art.

Description

Technical Field

[0001] This invention relates to the field of welded spherical space frame assembly and construction technology, specifically to a rapid positioning welding jig for spherical nodes of a space frame and its usage method. Background Technology

[0002] With the development of modern technology, steel space frame structures are increasingly being used in industrial facilities and civil public buildings. Compared with reinforced concrete, large-span steel space frames, as the roof load-bearing structure of buildings, have the advantages of high strength, low self-weight, and high degree of mechanization, which can meet the needs of large-span and large-space buildings.

[0003] In the welding construction of spherical nodes in a space frame, the precise positioning and temporary fixing of the welded spheres relative to the related members are crucial. The positioning accuracy of the welded spherical nodes directly affects the assembly accuracy and overall quality of the space frame structure. In existing technologies, the positioning, fixing, and installation of the welded spherical nodes relative to the members mainly employ temporary spot welding, high-altitude assembly, and fine-tuning methods. However, these methods have the following problems: (1) Positioning accuracy is difficult to guarantee: Since the space frame is a multi-directional spatial structure, the traditional method is to use temporary spot welding and high-altitude fine adjustment and assembly during on-site operation. It is difficult to quickly and accurately determine the relative positions of the space frame ball nodes and each member, resulting in insufficient positioning accuracy and affecting the installation and assembly accuracy. (2) The installation and dismantling of the fixed devices are complicated, the movement is difficult, and the temporary material cost is high: On site, the space members are temporarily fixed by erecting support frames. The installation and dismantling of these supports are complicated, and the dismantling process is prone to causing secondary damage to the space frame structure, resulting in material waste. A lot of scaffolding needs to be erected during the construction process, resulting in high material costs, poor economic efficiency, and long construction period; a large number of support frames will occupy the lower space and affect the cross-construction of other indoor disciplines. (3) High-altitude operations are numerous, safety risks are high, and the scope of application is small: Traditional processes require a large number of high-altitude operations, which pose high safety risks and are not suitable for engineering construction with large spans, obstacles in the lower space, or irregular shapes. (4) Welding deformation is difficult to control: The heat generated during the welding process can easily cause deformation of the temporarily fixed welding balls and rods, affecting the assembly accuracy and overall installation quality of the space frame structure.

[0004] Therefore, in order to improve the assembly quality and construction efficiency of welded space frame ball joints, it is urgent to design a welding jig that can improve the rapid assembly and positioning of space frame ball joints and its usage method. Summary of the Invention

[0005] The main objective of this invention is to provide a rapid positioning welding jig for space frame ball nodes and its usage method, in order to solve problems such as difficulty in ensuring positioning accuracy, cumbersome installation and dismantling of fixing devices, difficulty in moving them, high construction safety risks, and difficulty in controlling welding deformation in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rapid positioning welding jig for spherical nodes in a space frame includes a welding base, a rod positioning device, an adjustable support rod base, a rod support rod, and a top support. The welding base is used to place the welding ball. The rod positioning device is sleeved on the welding ball to achieve precise layout of the contact position between the rod and the welding ball. The adjustable support rod base is arranged around the welding base. The rod support rod is installed on the adjustable support rod base. The top support is hinged to the top of the rod support rod to support one end of the rod. The other end of the rod is welded and fixed to the welding ball.

[0007] Furthermore, the welding base includes a circular base plate, a support ring, and a support plate. The support ring and the support plate are both fixedly installed on the circular base plate. The four support plates are evenly arranged around the support ring. The inner side of the upper part of the support plate is adapted to the outer arc surface of the welding ball.

[0008] Furthermore, the rod positioning device adopts a hemispherical structure, with four positioning holes evenly arranged on its arc surface that are adapted to the size of the rod end.

[0009] Furthermore, the adjustable base of the support rod includes a square base plate and an adjustment rod disposed on the square base plate, wherein the outer side of the adjustment rod is provided with external threads.

[0010] Furthermore, the inner hole of the rod support rod is provided with an internal thread that matches the external thread of the adjusting rod.

[0011] Furthermore, an adjustment handle is provided on the outer side of the adjustment rod.

[0012] Furthermore, the top support adopts a semi-circular steel tube structure, and its inner arc surface is adapted to the outer arc surface of the end of the rod.

[0013] A method for using a rapid positioning welding jig for space frame ball joints includes the following steps: S1. Place the welding ball on the welding base; S2. Using the rod positioning device, mark out the precise contact position between the rod and the welding ball on the welding ball; S3. Accurately lay out the horizontal position of the adjustable base of the support rod according to the design drawings; S4. By adjusting the height of the rod support rod, the angle between the rod and the welding ball is adjusted to the design angle; S5. Hoist and install the rod, and weld it to the jig. One end of the rod is aligned with the accurately laid-out position on the welding ball, and the other end is placed on the top support. Check the planar position and spatial position of the rod. After confirming that there are no errors, weld and fix it. S6. After the welding of a single ball node is completed and the weld is inspected and found to be qualified, the ball node assembly of the space frame is hoisted off the jig for standby, and the construction of the next set of assemblies continues in a cyclical manner, and the construction of other nodes is completed in sequence. S7. The individual ball node welding assembly components are assembled in sections by hoisting until the space frame installation is completed.

[0014] Furthermore, in step 2S, during the layout, the rod positioning device is tightly fitted onto the welding ball, and a line is drawn on the welding ball according to the position of the positioning hole to determine the contact position between the rod and the welding ball. Then, the rod positioning device is removed.

[0015] Furthermore, in step S4, the adjusting handle is rotated to change the relative position between the rod support rod and the adjusting rod by using the mating external and internal threads, thereby adjusting the height of the rod support rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The overall structure is lightweight and flexible to use: The quick welding jig used in this invention, welding base, rod positioning device, adjustable base of support rod, rod support rod and top support are easy to install, disassemble and transport, occupy a small area, are lightweight and flexible to use, and have a high turnover rate. (2) Wide range of applications: The height of the support rod can be adjusted by connecting the adjustable base of the support rod with the support rod threadedly, so that the welding jig can be used in different spatial positions. The semi-circular top support is hinged at the top of the support rod to support the rod at different angles, which can prevent deformation and damage to the rod caused by temporary spot welding of the rod and the support rod during the construction process. (3) High assembly accuracy: This invention changes the high-altitude scattered assembly process to the ground block assembly and then overall assembly process. Combined with the space frame ball node rod positioning device and the ground assembly jig, the assembly accuracy is high, which greatly improves the assembly accuracy of the space frame ball node. The ground block assembly and then overall assembly reduces the high-altitude operation time and reduces safety risks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the welding base structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the rod positioning device of the present invention.

[0020] Figure 4 This is a structural schematic diagram of the rod positioning device of the present invention from another angle.

[0021] Figure 5 This is a schematic diagram of the adjustable base structure of the support rod of the present invention.

[0022] Figure 6 This is a schematic diagram of the rod support rod and top support structure of the present invention.

[0023] Figure 7 This is an exploded structural diagram of the rod support rod and top support of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Welding base; 11. Circular base plate; 12. Support ring; 13. Support plate; 2. Rod positioning device; 21. Positioning hole; 3. Adjustable base for support rod; 3. Square base plate; 31. Adjusting rod; 32. Adjusting handle; 33. Rod support rod; 4. Top support; 5. Welding ball; 6. Rod; 7. Detailed Implementation

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] Combination Figures 1 to 5 This embodiment provides a quick-positioning welding jig for space frame ball nodes, including a welding base 1, a rod positioning device 2, an adjustable support rod base 3, a rod support rod 4, and a top support 5. The welding base 1 is used to place the welding ball 6. The rod positioning device 2 is sleeved on the welding ball 6 to achieve precise layout of the contact position between the rod 7 and the welding ball 6. The adjustable support rod base 3 is arranged around the welding base 1. The rod support rod 4 is installed on the adjustable support rod base 3. The top support 5 is hinged to the top of the rod support rod 4 to support one end of the rod 7. The other end of the rod 7 is welded and fixed to the welding ball 6.

[0028] like Figure 2 As shown, in this embodiment, the welding base 1 includes a circular base plate 11, a support ring 12, and a support plate 13. The support ring 12 and support plate 13 are both fixedly installed on the circular base plate 11. Four support plates 13 are evenly arranged around the support ring 12, and the inner surface of the upper part of the support plate 13 is adapted to the outer arc surface of the welding ball 6. During construction, according to the on-site space frame processing requirements, after hardening the site, the welding base 1 is placed flat according to the layout position. Then, the welding ball 6 is placed on the welding base 1, and the support ring 12 and support plate 13 provide joint support for the welding ball 6.

[0029] like Figure 3 As shown, in this embodiment, the rod positioning device 2 adopts a hemispherical structure, with four positioning holes 21 evenly arranged on its arc surface, which are adapted to the size of the end of the rod 7. During construction, the rod positioning device 2 is tightly fitted onto the welding ball 6, and the positioning holes 21 are used to mark the contact position between the rod 7 and the welding ball 6, thereby achieving precise layout. Then, the rod positioning device 2 is removed.

[0030] like Figure 4 As shown, in this embodiment, the adjustable base 3 for the support rod includes a square base plate 31 and an adjusting rod 32 disposed on the square base plate 31. The adjusting rod 32 has external threads on its outer side. Preferably, the adjusting rod 32 has an adjusting handle 33 on its outer side.

[0031] like Figure 5 As shown, in this embodiment, the inner hole of the rod support rod 4 is provided with an internal thread that matches the external thread of the adjusting rod 32.

[0032] like Figure 5 As shown, in this embodiment, the top support 5 adopts a semi-circular steel tube structure, which is adapted to the outer arc surface of the end of the inner arc surface member 7. The top support 5 is hinged to the member support rod 4. When the height of the member support rod 4 is adjusted, the angle between the top support 5 and the member support rod 4 can be changed, thereby preventing deformation and damage to the member due to temporary spot welding fixation between the member and the member support rod during the construction process.

[0033] Example 2

[0034] This embodiment provides a method for using a quick-positioning welding jig for space frame ball joints, including the following steps: S1. Place the welding ball 6 on the welding base 1; First, according to the on-site space frame processing requirements, after hardening the site, place the welding base 1 flat according to the layout position, and then place the welding ball 6 on the welding base 1; S2. Using the rod positioning device 2, lay out the precise contact position between the rod 7 and the welding ball 6 on the welding ball 6; Specifically, based on the design drawings, the positioning device 2 for the space frame ball node is prefabricated to meet the requirements of each node. The positioning device 2 is then tightly fitted onto the welded ball 6 to achieve precise layout of the contact position between the member 7 and the welded ball 6. S3. Accurately lay out the horizontal position of the adjustable base 3 of the support rod according to the design drawings; Specifically, based on the design drawings and the design of different ball nodes, the horizontal position of the adjustable base 3 of the support rod is accurately laid out; S4. By adjusting the height of the support rod 4, the angle between the rod 7 and the welding ball 6 is adjusted to the design angle; S5. Hoist and install rod 7, and weld it to the jig. One end of rod 7 is aligned with the accurately laid-out position on the welding ball 6, and the other end is placed on the top support 5. Check the planar position and spatial position of rod 7. After confirming that there are no errors, weld and fix it. S6. After the welding of a single ball node is completed and the weld is inspected and found to be qualified, the ball node assembly of the space frame is hoisted off the jig for standby, and the construction of the next set of assemblies continues in a cyclical manner, and the construction of other nodes is completed in sequence. S7. The individual ball node welding assembly components are assembled in sections by hoisting until the space frame installation is completed.

[0035] In this embodiment, in step S2, during the layout, the rod positioning device 2 is tightly fitted onto the welding ball 6, and a line mark is made on the welding ball 6 according to the position of the positioning hole 21 to determine the contact position between the rod 7 and the welding ball 6. Then the rod positioning device 2 is removed. In this embodiment, in step S4, rotating the adjusting handle 33 and using the mating external and internal threads changes the relative position between the rod support rod 4 and the adjusting rod 32, thereby adjusting the height of the rod support rod 4.

[0036] Through the solutions of the two embodiments described above, the present invention provides a method for assembling a space frame with a rapid positioning welding jig and system for space frame ball nodes. The various components are easy to install, disassemble, and transport, occupy a small area, and are lightweight and flexible to use. The height of the support rods can be adjusted to suit different spatial positions, and the adjustable-angle semi-circular top supports on the support rods can support the rods at different angles, preventing deformation and damage to the rods caused by temporary spot welding between the rods and support rods during construction. By using a precise ball node positioning device and jig to assemble the rods within the node, the assembly accuracy of the space frame ball nodes is greatly improved.

[0037] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A quick-positioning welding jig for spherical nodes in a space frame, characterized in that, The device includes a welding base (1), a rod positioning device (2), an adjustable support rod base (3), a rod support rod (4), and a top support (5). The welding base (1) is used to place the welding ball (6). The rod positioning device (2) is sleeved on the welding ball (6) to achieve precise layout of the contact position between the rod (7) and the welding ball (6). The adjustable support rod base (3) is arranged around the welding base (1). The rod support rod (4) is installed on the adjustable support rod base (3). The top support (5) is hinged to the top of the rod support rod (4) to support one end of the rod (7). The other end of the rod (7) is welded and fixed to the welding ball (6).

2. The quick positioning welding jig for space frame ball nodes as described in claim 1, characterized in that, The welding base (1) includes a circular base plate (11), a support ring (12) and a support plate (13). The support ring (12) and the support plate (13) are fixedly installed on the circular base plate (11). The four support plates (13) are evenly arranged around the support ring (12). The inner side of the upper part of the support plate (13) is adapted to the outer arc surface of the welding ball (6).

3. The quick positioning welding jig for space frame ball nodes as described in claim 1, characterized in that, The rod positioning device (2) adopts a hemispherical structure, and four positioning holes (21) that are adapted to the end size of the rod (7) are evenly arranged on its arc surface.

4. The quick positioning welding jig for space frame ball nodes as described in claim 1, characterized in that, The adjustable base (3) of the support rod includes a square base plate (31) and an adjustment rod (32) provided on the square base plate (31), and the outer side of the adjustment rod (32) is provided with external threads.

5. The quick positioning welding jig for space frame ball nodes as described in claim 4, characterized in that, The inner hole of the rod support rod (4) is provided with an internal thread that matches the external thread of the adjusting rod (32).

6. The quick positioning welding jig for space frame ball nodes as described in claim 4, characterized in that, An adjustment handle (33) is provided on the outside of the adjustment rod (32).

7. The quick positioning welding jig for space frame ball nodes as described in claim 1, characterized in that, The top support (5) adopts a semi-circular steel pipe structure, and its inner arc surface is compatible with the outer arc surface of the end of the rod (7).

8. A method for using a rapid positioning welding jig for space frame ball nodes as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Place the welding ball (6) on the welding base (1); S2. Using the rod positioning device (2), lay out the precise contact position between the rod (7) and the welding ball (6) on the welding ball (6); S3. Accurately lay out the horizontal position of the adjustable base (3) of the support rod according to the design drawings; S4. By adjusting the height of the rod support rod (4), the angle between the rod (7) and the welding ball (6) is adjusted to the design angle; S5. Hoist and place the rod (7), and weld it to the jig. One end of the rod (7) is aligned with the accurately laid-out position on the welding ball (6), and the other end is placed on the top support (5). Check the planar position and spatial position of the rod (7). After confirming that there are no errors, weld and fix it. S6. After the welding of a single ball node is completed and the weld is inspected and found to be qualified, the ball node assembly of the space frame is hoisted off the jig for standby, and the construction of the next set of assemblies continues in a cyclical manner, and the construction of other nodes is completed in sequence. S7. The individual ball node welding assembly components are assembled in sections by hoisting until the space frame installation is completed.

9. The method of using the quick positioning welding jig for space frame ball nodes as described in claim 8, characterized in that, In step S2, during the layout, the rod positioning device (2) is tightly fitted onto the welding ball (6), and a line is drawn on the welding ball (6) according to the position of the positioning hole (21) to determine the contact position between the rod (7) and the welding ball (6), and then the rod positioning device (2) is removed.

10. The method of using a rapid positioning welding jig for a space frame ball joint as described in claim 8, characterized in that, In step S4, the adjusting handle (33) is rotated, and the relative position between the rod support rod (4) and the adjusting rod (32) is changed by using the matching external and internal threads, so as to adjust the height of the rod support rod (4).

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