Welding ball net rack ball joint positioning and fixing device and using method thereof

Abstract

The invention discloses a welding ball net rack ball joint positioning and fixing device and a using method thereof, and relates to the technical field of welding ball net rack splicing construction. According to the device, the positioning hole is formed in the bottom of the welding ball, and the high-strength bolt, the sleeve nut, the conical pipe, the supporting stand column, the limiting screw and other components are arranged in a matched mode, so that rapid and accurate positioning and temporary and effective fixing of the welding ball in the splicing process are achieved. Specifically, an internal thread is arranged in a positioning hole in the top of the welding ball and is matched with a high-strength bolt, so that the reliability and convenience of connection are ensured. The supporting stand column is used for supporting the welding ball, the welding ball is effectively fixed through cooperation of the limiting screw rod and the conical pipe, the welding ball is prevented from being pulled up in the welding process, and therefore welding deformation is controlled. According to the device and the using method thereof, the problems that in the prior art, welding balls are low in positioning precision, welding deformation is difficult to control, and a fixing device is tedious to assemble and disassemble are effectively solved, the assembling quality and construction efficiency of a grid structure are remarkably improved, and the device and the using method thereof have wide application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of welded spherical grid assembly construction, and more specifically, to a positioning and fixing device for spherical joints of welded spherical grids and its usage method. Background Art

[0002] The grid structure is a common form of steel structure, which has the advantages of good spatial force performance, high stiffness, clear force transmission path, simple structure, and easy fabrication and installation. It is widely used in large public buildings, industrial factories, stadiums and other fields. In the grid structure, the welded spherical grid is an important type, and its joints are composed of welded balls and bars connected by welding, which has the advantages of high bearing capacity, simple structure, and convenient fabrication and installation. Therefore, it has been widely used in engineering practice.

[0003] However, during the assembly construction process of welded spherical grids, the accurate positioning and temporary fixing of welded balls are crucial. The positioning accuracy of welded balls is directly related to the assembly accuracy and overall quality of the grid structure. In the prior art, the positioning and fixing of welded balls mainly rely on methods such as welding fixation and flame cutting. These methods are prone to damage the grid structure and have the following problems:

[0004] 1. Difficult to guarantee positioning accuracy: It is difficult to accurately control the spherical center coordinates of welded balls, resulting in insufficient assembly accuracy.

[0005] 2. Difficult to control welding deformation: The heat generated during the welding process is likely to cause deformation of welded balls, especially the problem of welded balls being pulled out and detached from the support columns, which affects the assembly accuracy and overall quality of the grid structure.

[0006] 3. Complicated installation and removal of fixing devices: The installation and removal operations of fixing devices are cumbersome, which are prone to cause secondary damage to the grid structure and result in material loss.

[0007] Therefore, in order to improve the assembly quality and construction efficiency of welded spherical grids, there is an urgent need for a positioning and fixing device for spherical joints of welded spherical grids and its usage method that can improve the positioning accuracy of welded balls, effectively control welding deformation, and is convenient for installation and removal. Summary of the Invention

[0008] The purpose of the present invention is to provide a positioning and fixing device for spherical joints of welded spherical grids and its usage method to solve the problems of low positioning accuracy of welded balls, difficult control of welding deformation, and complicated installation and removal of fixing devices in the prior art.

[0009] To achieve the object of the present invention, the technical solution adopted is: a positioning and fixing device for the spherical joints of a welded spherical grid, including a welded ball, a support column and a connecting structure; the connecting structure is used to connect the welded ball and the support column, and the connecting structure includes a conical tube that can be inserted into the support column. The central axis of the conical tube is on the same straight line as the center of the spherical center of the welded ball. The large-diameter end of the conical tube is matched with the inner diameter of the support column, and the small-diameter end of the conical tube is detachably connected to the welded ball; a tightening structure for pressing the conical tube is also installed on the support column.

[0010] Further, the connecting structure further includes a sleeve installed at the small-diameter end of the conical tube, and a top sealing plate is installed at the end of the sleeve away from the conical tube; a high-strength bolt is also installed in the sleeve, and the high-strength bolt passes through the top sealing plate and is threadedly connected to the welded ball. A sleeve nut that can move axially along it but cannot rotate independently is also installed on the high-strength bolt, and the sleeve nut is located between the welded ball and the sleeve; a positioning hole is provided at the bottom of the welded ball, and the central axis of the positioning hole is on the same straight line as the center of the welded ball. When the welded ball is installed, the direction of the positioning hole on the welded ball is perpendicular to the ground, and internal threads are provided in the positioning hole. The internal threads in the positioning hole are threadedly matched with the end of the screw rod of the high-strength bolt.

[0011] Further, a chute is provided on the screw rod of the high-strength bolt, and the chute is an oblong hole groove. The axis direction of the oblong hole groove is the same as the axis direction of the high-strength bolt. A pin that can be inserted into the chute is also provided on the sleeve nut. When the high-strength bolt is screwed, the pin can slide in the chute and drive the high-strength bolt to move along its axis direction.

[0012] Further, a middle sealing plate is provided at the end of the sleeve close to the conical tube.

[0013] Further, a limiting ring and a bottom sealing plate that are matched with the inner diameter of the support column are also provided at the large-diameter end of the conical tube.

[0014] Further, the tightening structure includes four limiting holes arranged at intervals along the circumferential direction of the support column. The four limiting holes are located at the same height position, and internal threads are provided in the limiting holes. A limiting screw rod that is matched with the internal threads is installed in each limiting hole. When the limiting screw rod is tightened, the limiting screw rod presses against the conical tube to prevent the welded ball from being pulled out under the welding deformation of the grid.

[0015] Further, the upper end face of the support column is funnel-shaped, and the taper of the upper end face of the support column is 45°, ensuring that the upper end face of the support column is completely attached to the welded ball.

[0016] Further, a support bottom plate is also installed at the lower end of the support column. The support bottom plate is used for the fixation and stability of the support column. When the height of the support column is relatively high and the stability is insufficient, inclined supports can be added to the support column.

[0017] Usage method of positioning and fixing device for spherical joints of welded spherical grids, comprising the following steps:

[0018] S1. By turning the sleeve nut, screw the high-strength bolt in the connecting structure into the positioning hole on the welded ball, so as to connect and fix the connecting structure with the welded ball that needs to be accurately positioned and temporarily fixed;

[0019] S2. Measure and set out the lines on the assembly site, set up support columns and support bottom plates according to the coordinate positions of the welded balls, and ensure that the support columns are perpendicular to the ground, so that the center line of the support column passes through the center of the welded ball, and the height of the support column is determined in combination with the coordinates of the welded ball; when the height of the support column is relatively high and the stability is insufficient, diagonal braces can be added to the support column;

[0020] S3. Insert the conical tube in the connecting structure into the support column, so that the welded ball is completely attached to the upper end face of the support column;

[0021] S4. Install the limit screw in the limit hole on the support column, and turn the limit screw to make the limit screw contact and press against the conical tube in the connecting structure, thereby completing the positioning and fixing of the welded ball;

[0022] S5. After the grid assembly is completed, turn the limit screw in the reverse direction to loosen the pressing of the conical tube by the limit screw, and turn the sleeve nut in the reverse direction, that is, remove the connecting structure, and the construction is simple and fast.

[0023] The beneficial effects of the present invention are:

[0024] By fixing the welded ball with the connecting structure, the present invention realizes the accurate positioning of the welded ball and ensures the accuracy of the ball center coordinates; through the cooperation of the pressing structure and the conical tube, the welded ball is effectively fixed, preventing the welded ball from being pulled out of the support column during the welding process, thereby controlling the welding deformation; at the same time, this device can quickly position and fix, shorten the assembly time, improve the construction efficiency, and after the grid assembly is completed, the device can be removed simply and quickly without damaging the grid structure. The structure is simple, the operation is convenient, and it is easy to implement on the construction site. Description of the Drawings

[0025] The drawings illustrate exemplary embodiments of the present invention and are used in conjunction with the description thereof to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the drawings are included in this specification and form a part of this specification.

[0026] Figure 1 is a structural diagram of the positioning and fixing device for spherical joints of welded spherical grids provided by the present invention;

[0027] Figure 2 is a perspective view of the positioning and fixing device for spherical joints of welded spherical grids provided by the present invention;

[0028] Figure 3 It is a structural diagram of the connection structure;

[0029] Figure 4 It is an exploded view of the connection structure;

[0030] Figure 5 It is a structural diagram of the support column.

[0031] Markings in the attached drawings and the corresponding part names:

[0032] 1 - Welding ball, 2 - Connection structure, 3 - Support column, 4 - Limit screw, 5 - Support base plate;

[0033] 2.1 - Pin, 2.2 - Sleeve nut, 2.3 - Top sealing plate, 2.4 - High-strength bolt, 2.5 - Sleeve, 2.6 - Middle sealing plate, 2.7 - Tapered pipe, 2.8 - Bottom sealing plate, 2.9 - Limit ring;

[0034] 2.4.1 - Slide groove. Specific implementation manner

[0035] The present invention will be further described in detail below in conjunction with the attached drawings and the implementation manner. It can be understood that the specific implementation manner described herein is only used to explain the relevant content and does not limit the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the attached drawings.

[0036] It should be noted that, without conflict, the implementation manners in the present invention and the features in the implementation manners can be combined with each other. The present invention will be described in detail below with reference to the attached drawings and in conjunction with the implementation manner.

[0037] As Figures 1 to 5 shown, a positioning and fixing device for the spherical node of a welded ball grid provided by the present invention includes a welding ball 1, a support column 3, and a connection structure 2. The connection structure 2 is used to connect the welding ball 1 and the support column 3, and both the connection structure 2 and the welding ball 1, the support column 3 are detachably connected. The connection structure 2 includes a tapered pipe 2.7. The central axis of the tapered pipe 2.7, the central axis of the support column 3, and the center of the welding ball 1 are on the same straight line. And when the connection structure 2 is installed, the tapered pipe 2.7 in the connection structure 2 is inserted into the support column 3. The diameter of the large-diameter end of the tapered pipe 2.7 is adapted to the inner diameter of the support column 3. After the tapered pipe 2.7 is inserted into the support column 3, the large-diameter end of the tapered pipe 2.7 and the support column 3 are in clearance fit, ensuring the coaxiality of the tapered pipe 2.7 and the support column 3.

[0038] To ensure the detachable connection between the welded ball 1 and the connecting structure 2, a sleeve 2.5 is welded to the small-diameter end of the conical tube 2.7, and the central axis of the sleeve 2.5 is collinear with the central axis of the conical tube 2.7. A top sealing plate 2.3 is welded to one end of the sleeve 2.5 close to the welded ball 1. A high-strength bolt 2.4 is installed in the sleeve 2.5, and its central axis is collinear with the central axis of the sleeve 2.5. A circular hole for the high-strength bolt 2.4 to pass through is opened in the center of the top sealing plate 2.3, and the hole diameter is adapted to the diameter of the screw rod of the high-strength bolt 2.4. A positioning hole is opened on the welded ball 1, and its central axis is collinear with the center of the welded ball 1, and the positioning hole is a threaded hole.

[0039] To prevent the high-strength bolt 2.4 from falling out of the sleeve 2.5, a middle sealing plate 2.6 is welded to one end of the sleeve 2.5 close to the conical tube 2.7, and the conical tube 2.7 is welded and fixed to the middle sealing plate 2.6 to enhance the connection strength between the sleeve 2.5 and the conical tube 2.7.

[0040] At the same time, a sleeve nut 2.2 is sleeved on the high-strength bolt 2.4. The sleeve nut 2.2 is located between the welded ball 1 and the sleeve 2.5. Its outer shape is the same as that of a hexagon head nut, and there is no thread in its inner hole. The sleeve nut 2.2 can move axially on the high-strength bolt 2.4 but cannot rotate independently. When rotating, it drives the high-strength bolt 2.4 to rotate synchronously. To achieve this, a chute 2.4.1 is provided on the outer wall of the high-strength bolt 2.4 along the axial direction, and a pin 2.1 is provided on the sleeve nut 2.2, and the pin 2.1 is inserted into the chute 2.4.1.

[0041] When the welded ball 1 and the connecting structure 2 need to be connected, the high-strength bolt 2.4 is screwed into the positioning hole by screwing the sleeve nut 2.2 to achieve the rapid and accurate connection between the connecting structure 2 and the welded ball 1, and prepare for the next connection between the welded ball 1 and the support column 3.

[0042] To ensure the coaxiality between the conical tube 2.7 in the connecting structure 2 and the support column 3, a limiting ring 2.9 is welded to the large-diameter end of the conical tube 2.7. Its diameter is slightly smaller than the inner diameter of the support column 3, and it has a clearance fit with the support column 3 to enhance the positioning effect between the conical tube 2.7 and the support column 3 and ensure their coaxiality. A bottom sealing plate 2.8 is also welded to the large-diameter end of the conical tube 2.7, and the limiting ring 2.9 is welded to the bottom sealing plate 2.8 to enhance the connection strength.

[0043] To ensure the fixation of the connecting structure 2 and the support column 3, a tightening structure for tightly pressing the conical tube 2.7 is installed on the support column 3. As Figure 2 、 Figure 5As shown in the figure, the tightening structure includes a plurality of limiting holes evenly spaced along the circumferential direction of the support column 3. The limiting holes are threaded holes, and the axial direction of the limiting screw 4 is the same as the diameter direction of the conical tube 2.7. A limiting screw 4 that is threadedly engaged with it is installed in each limiting hole. By turning the limiting screw 4, the limiting screw 4 can be tightened or loosened against the conical tube 2.7, preventing the welding ball 1 from being pulled out of the support column 3 under the welding deformation of the grid structure. Of course, in the present invention, when the force received by the welding ball 1 during the installation of the grid structure is small, the position of the limiting screw 4 can also correspond to the position of the limiting ring 2.9, so that the limiting screw 4 tightens the limiting ring 2.9 or the limiting screw 4 loosens the tightening of the limiting ring 2.9, realizing the connection and separation between the connecting structure 2 and the support column 3.

[0044] Through the cooperation of the welding ball 1, the support column 3 and the connecting structure 2, during the grid assembly, first connect the welding ball 1 with the connecting structure 2, then insert the connecting structure 2 into the support column 3, and finally turn the limiting screw 4 to tighten the conical tube 2.7. Under the condition of ensuring that the support column 3 is perpendicular to the ground, the welding ball 1 does not need to adjust its installation position, can be quickly positioned and fixed, and the installation time is shortened. After the grid structure is assembled, the device can be quickly removed without damaging the grid structure.

[0045] To ensure that the welding ball 1 fits against the upper end face of the support column 3, the upper end face of the support column 3 is funnel-shaped. Specifically, the taper of the upper end face of the support column 3 is generally 45°. The support base plate 5 welded to the lower end of the support column 3 is fixed to the ground by bolts. When the support column 3 is relatively high, an inclined support can be hinged to the support column 3, and the inclined support is fixed by a ground anchor.

[0046] In the welding ball grid ball node positioning and fixing device provided by the present invention, the connecting structure 2 is an integral tool-type unit. By turning the sleeve nut 2.2 on the connecting structure 2, the connecting structure 2 can be connected to the welding ball 1 as a whole. By turning the limiting screw 4 to tighten the conical tube 2.7 on the connecting structure 2, the connecting structure 2 can be connected to the support column 3, thereby realizing the effective support and fixed connection between the welding ball 1 and the support column 3.

[0047] The usage method of the welding ball grid ball node positioning and fixing device includes the following steps:

[0048] S1. First, align the high-strength bolt 2.4 with the positioning hole on the welding ball 1, and turn the sleeve nut 2.2. The sleeve nut 2.2 drives the high-strength bolt 2.4 to rotate, and while the high-strength bolt 2.4 rotates, it is screwed into the positioning hole on the welding ball 1 to realize the connection between the welding ball 1 and the connecting structure 2;

[0049] S2. Measure and set out the lines on the assembly site. Set the support base plate 5 and the support column 3 according to the coordinate position of the welded ball 1, ensure that the support column 3 is perpendicular to the ground, and make the center line of the support column 3 pass through the center of the welded ball 1. The height of the support column 1 is determined in combination with the coordinates of the welded ball 1. When the height of the support column 3 is relatively high and the stability is insufficient, an inclined support can also be hinged on the side of the support column 3, and the inclined support is fixed to the ground by a ground anchor.

[0050] S3. Insert the conical pipe 2.7 in the connecting structure 2 into the support column 3, and make the welded ball 1 fit perfectly with the upper end face of the support column 3.

[0051] S4. Screw the limit screw 4 into the limit hole of the support column 3, and rotate the limit screw 4 to make the limit screw 4 contact and press against the conical pipe 2.7 of the connecting structure 2, thereby completing the positioning and fixing of the welded ball 1.

[0052] S5. After the grid assembly is completed, loosen the limit screw, and turn the sleeve nut to remove the connecting structure, which is simple and fast in construction.

[0053] In this embodiment, the order of the above steps S1 and S2 can be swapped according to the actual construction requirements to flexibly arrange the construction process. At the same time, by using the positioning and fixing device for the spherical joints of the welded ball grid provided by the present invention, the following significant advantages are achieved:

[0054] 1. Facilitate coordinate measurement and control: During the assembly of the grid structure, the center coordinates of the welded ball 1 can be transferred to the outer wall of the support column 3, simplifying the coordinate measurement and control process of the entire assembled grid and improving the measurement efficiency and accuracy.

[0055] 2. Effectively control welding deformation: This device can effectively control the welding deformation of the welded ball 1 grid, especially prevent the welded ball 1 from being pulled out of the support column 3 during the welding process, thereby ensuring the assembly accuracy of the grid structure.

[0056] 3. Simple and fast construction: After the grid structure is assembled, only need to loosen the limit screw 4 and turn the sleeve nut 2.2 to quickly remove the device without complex operations, significantly improving the construction efficiency. Compared with the traditional welding fixation and flame cutting methods, the device of the present invention avoids the risk of damaging the grid structure, reducing material loss and repair costs.

[0057] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0058] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or variations can be made on the basis of the above disclosure, and these changes or variations are still within the scope of the present invention.

Claims

1. Welding ball grid ball node positioning and fixing device, characterized in that, It includes a welded ball (1), a support column (3) and a connection structure (2); the connection structure (2) is used to connect the welded ball (1) and the support column (3), and the connection structure (2) includes a tapered tube (2.7) that can be inserted into the support column (3). The central axis of the tapered tube (2.7) is on the same straight line as the center of the spherical center of the welded ball (1). The large-diameter end of the tapered tube (2.7) is in internal diameter fit with the support column (3), and the small-diameter end of the tapered tube (2.7) is detachably connected to the welded ball (1); a tightening structure for tightly pressing the tapered tube (2.7) is also installed on the support column (3).

2. The positioning and fixing device for the spherical joints of a welded spherical grid structure according to claim 1, wherein The connection structure (2) further includes a sleeve (2.5) installed at the small-diameter end of the tapered tube (2.7), and a top sealing plate (2.3) is installed at one end of the sleeve (2.5) away from the tapered tube (2.7); a high-strength bolt (2.4) is also installed in the sleeve (2.5). The high-strength bolt (2.4) passes through the top sealing plate (2.3) and is threadedly connected to the welded ball (1), and a sleeve nut (2.2) that can move along its axial direction but cannot rotate independently is also installed on the high-strength bolt (2.4). The sleeve nut (2.2) is located between the welded ball (1) and the sleeve (2.5).

3. The positioning and fixing device for the spherical joints of a welded spherical grid structure according to claim 2, characterized in that, A positioning hole with an axis direction consistent with its radius direction is also opened on the welded ball (1). The positioning hole is adapted to the end of the screw rod of the high-strength bolt (2.4), and a chute (2.4.1) extending along its axis direction is opened on the screw rod of the high-strength bolt (2.4). The sleeve nut (2.2) is in threaded fit with the screw rod of the high-strength bolt (2.4), and a pin (2.1) that can be inserted into the chute (2.4.1) is also provided on the sleeve nut (2.2).

4. The positioning and fixing device for the spherical joints of a welded spherical grid structure according to claim 1, characterized in that, One end of the sleeve (2.5) close to the tapered tube (2.7) has a middle sealing plate (2.6).

5. The positioning and fixing device for the spherical joints of a welded spherical grid structure according to claim 1, characterized in that, The large-diameter end of the tapered tube (2.7) also has a bottom sealing plate (2.8) and a limiting ring (2.9) that is in internal diameter fit with the support column (3).

6. The positioning and fixing device for the spherical joints of a welded spherical grid structure according to claim 1, characterized in that, The tightening structure includes a plurality of limiting holes arranged at intervals along the circumferential direction of the support column (3). A limiting screw rod (4) with a threaded fit is installed in the limiting holes, and the plurality of limiting screw rods (4) jointly tightly press the tapered tube (2.7).

7. The positioning and fixing device for the spherical joints of a welded spherical grid structure according to claim 1, wherein, The upper end end face of the support column (3) is funnel-shaped, and the taper of the upper end end face of the support column (3) is 45°.

8. The positioning and fixing device for the spherical joints of a welded spherical grid structure according to claim 1, wherein, A support bottom plate (5) is also installed at the lower end of the support column (3).

9. The using method of the positioning and fixing device for the spherical joints of the welded spherical grid, characterized in that, It includes the following steps: S1. By turning the sleeve nut (2.2), connect and fix the connection structure (2) with the welded ball (1) that needs to be accurately positioned and temporarily fixed; S2. Measure and set out the lines on the assembly site. Set the support column (3) and the support bottom plate (5) according to the coordinate position of the welded ball (1), and make the support column (3) perpendicular to the ground. The center of the spherical center of the welded ball (1) and the center line of the support column (3) are on the same straight line; S3. Insert the tapered tube (2.7) in the connection structure (2) into the support column (3) so that the welded ball (1) fits against the upper end end face of the support column (3); S4. Install the limit screw (4) on the support column (3), and turn the limit screw (4) to tightly fix the tapered tube (2.7) with the limit screw (4), thus completing the positioning and fixing of the welded ball (1). S5. After the grid assembly is completed, turn the limit screw (4) in the reverse direction to loosen the tight pressing of the tapered tube (2.7) by the limit screw (4), and turn the sleeve nut (2.2) in the reverse direction, that is, remove the connection structure (2).

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