Splicing structure and method for net rack ball joints

Abstract

The invention discloses a net rack ball joint splicing structure and method, and relates to the technical field of steel structure installment, the splicing structure comprises a joint bolt ball main body and a bottom plate, a ball connecting screw tube is arranged in a first installation hole in the joint bolt ball main body, a connecting screw rod in the ball connecting screw tube is fixedly arranged at one end of a rod piece conical head, and the bottom plate is fixedly connected with the joint bolt ball main body. A limiting rod is fixedly arranged at the upper end of the bottom plate, a stop rod is fixedly arranged at the upper end of the limiting rod, a connecting sleeve on the limiting rod and the stop rod is fixedly arranged in a second mounting hole in the bottom end of the joint bolt ball body, a stop mechanism is arranged in the joint bolt ball body, and a limiting mechanism is arranged on the ball body connecting solenoid. According to the joint bolt ball, the joint bolt ball body can be fixedly connected with the bottom plate only through any connecting screw rod, the connecting screw rods are limited and fixed through the limiting frames, the connecting safety of the joint bolt ball body during connection is improved, and meanwhile the working height of the joint bolt ball body can be rapidly adjusted by arranging the multiple connecting rods.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure installation, in particular to a grid ball node assembly structure and method. Background Art

[0002] A grid structure is a highly indeterminate spatial bar system. Its advantages include excellent mechanical properties, high rigidity, excellent integrity and seismic resistance, economical and safe construction, and ease of fabrication and installation. Consequently, it has found widespread application. Grid structures are prefabricated components, reducing construction complexity and shortening project duration. Construction equipment can be installed within the grid structure itself, simplifying installation and auxiliary construction. Grids are spatial structures composed of multiple bars connected by nodes in a grid pattern. The basic units that make up a grid include triangular pyramids, triangular prisms, cubes, and truncated quadrangular pyramids. These units can be combined to form flat shapes such as triangles, quadrilaterals, hexagons, circles, or any other shape.

[0003] Ball nodes play an important role in steel structure buildings. First, ball nodes play the role of connection and intersection in steel structure buildings. Second, the bearing capacity of steel structure buildings is improved through the constraint of ball nodes. There are many forms of ball nodes currently used in steel structure buildings. The ball nodes of steel structure buildings can be connected by simple bolts, welded by two steel plates, or welded by channel steel, and then connected to the support bracket. Because the connection between the ball node and the support bracket is relatively complicated, and the ball node and the grid rod are mostly welded on site during installation, it is not easy to ensure the connection accuracy during processing, and the processing efficiency is low. The existing grid ball support is mostly welded by multiple steel plates, and when needed For different diameters When the ball nodes are fixed, different grid ball supports need to be processed, which has great limitations in use. In addition, the tennis ball supports are fixed and welded, which makes it inconvenient to adjust the height during use.

[0004] Based on this, a grid ball node assembly structure and method are now provided to eliminate the drawbacks of existing devices. Summary of the Invention

[0005] The object of the present invention is to provide a grid ball node assembly structure and method to solve the problem in the background art that it is not convenient to quickly and accurately connect the grid support rods and the grid ball nodes.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The cam is fixedly provided with a plurality of holes, and the threaded hole in the cam is threadably connected to the bottom end of the cam, and the cam is fixedly provided with a plurality of holes.

[0008] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0009] The two guide rails are fixedly mounted on the T-shaped slide groove at the inclined surface of the guide rail, and the two guide rails are respectively fixed on one end of the guide rail and the lower end of the guide rail are fixedly connected to the two spring telescopic rod output ends, and the other end of the spring telescopic rod is fixedly mounted on the installation chamber inside the node bolt ball body. The upper end of the arc block is arc-shaped, and a push rod is slidably provided in the circular through-hole at one end of the ball connecting screw tube. A tension spring is provided between one side of the circular plate and one end of the ball connecting screw tube, and one end of the push rod is tightly attached to the arc surface of the upper end of the arc block.

[0010] In an optional solution, a ball is provided at one end of each push rod.

[0011] In an optional solution: the cross-section of the limiting rod is rectangular.

[0012] The cam is fixedly mounted on the sliding sleeve, and the sliding sleeve has two ends respectively connected to the support frame, the two ends of the cam are fixed on the sliding sleeve, and the support frame is fixed with a toothed connection.

[0013] In an optional solution: a dial plate is provided at the bottom end of each of the limiting frames.

[0014] In an optional scheme: a mounting plate is coaxially provided under the base plate, and a plurality of fixed rotating blocks are provided in a circular array at the bottom end of the base plate, the fixed rotating block is rotatably connected to one end of the connecting rod, and the connecting rod and the fixed rotating block are connected by a second bolt, and a stop groove is provided at the upper end of the mounting plate corresponding to the position of the fixed rotating block, and the other end of the connecting rod is tightly attached to the stop groove, and mounting columns are fixed on both sides of one end of the connecting rod, and a rotating plate is rotatably provided on the mounting columns, and a first threaded hole is symmetrically provided on the upper end of the rotating plate, and a second threaded hole is provided at the upper end of the mounting plate corresponding to the position of the first threaded hole, and fixing screws are provided in the first threaded hole and the second threaded hole, and a plurality of fixed mounting holes are fixed on the upper end of the mounting plate.

[0015] In an optional solution: a plurality of fixed rotating blocks are fixedly provided at the bottom end of the base plate, a retaining groove is provided at the upper end of the mounting plate corresponding to the fixed rotating blocks, and a second threaded hole is provided at the upper end of the mounting plate corresponding to the position of the retaining groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention is characterized in that ball connecting screws are fixedly provided in several first mounting holes on the node bolt ball body, and the grid rod is connected to the node bolt ball body by connecting screws and rod cone heads. A connecting sleeve is fixedly provided in the second mounting hole on the node bolt ball body, and a stop rod is provided at the upper end of the bottom plate for use with the connecting sleeve. When any connecting screw is installed in the inside of the ball connecting screw tube, the connecting screw pushes the arc block to move through the push rod, and the arc block cooperates with the guide block through the limit slider, so that the stop frame moves into the annular limit groove at one end of the stop rod, thereby fixing the node bolt ball body and the bottom plate, so that the working efficiency of connecting the node bolt ball body and the bottom plate can be accelerated during use. At the same time, only any one connecting screw is needed to fix the node bolt ball body and the bottom plate, and the node bolt ball body and the bottom plate can be separated only after all several connecting screws are removed, thereby increasing the safety of the node bolt ball body when connected.

[0018] 2. The present invention provides a push rod, a sliding ring, a baffle and a limit frame, so that when the connecting screw is installed inside the spherical connecting screw, the cone head of the rod pushes the sliding ring to slide through the push rod. When the connecting screw is installed, one end of the limit frame can limit and fix the connecting screw to prevent the connecting screw from escaping from the inside of the spherical connecting screw during use. At the same time, by providing a plurality of connecting rods at the bottom end of the base plate and a plurality of retaining grooves at the upper end of the mounting plate, it is convenient to quickly adjust the working height of the node bolt ball body during use, thereby increasing the practicality of the grid ball node assembly structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the rod cone head structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the node bolt ball body of the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the installation sleeve of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the stop frame, limit slider and guide block of the present invention.

[0024] Figure 6 It is a schematic structural diagram of the stop frame of the present invention.

[0025] Figure 7 Schematic diagram of the stop rod structure of the present invention.

[0026] Figure 8 It is a schematic diagram of the connecting rod and retaining groove structure of the present invention.

[0027] Notes on figure numbers: 11 node bolt ball body, 12 sphere connecting screw, 13 support plate, 14 bottom plate, 15 connecting screw, 16 rod cone head, 17 truss rod, 18 limit rod, 19 stop rod, 20 connecting sleeve, 21 stop frame, 22 limit slider, 23 guide block, 24 arc block, 25 spring telescopic rod, 26 push rod, 27 tension spring, 28 mounting sleeve, 29 push rod, 30 sliding ring, 31 first return spring, 32 limit frame, 33 second return spring, 34 baffle, 35 connecting rod, 36 fixed rotating block, 37 stop groove, 38 rotating plate, 39 fixed mounting hole, 40 mounting plate. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] In one embodiment, Figures 1-8 As shown, a grid ball node assembly structure includes a node bolt ball body 11 and a base plate 14, wherein the node bolt ball body 11 is provided with a plurality of first mounting holes, wherein a ball connecting screw 12 is fixedly provided inside the first mounting hole, and a connecting screw 15 is threadedly provided in the threaded hole inside the ball connecting screw 12, and the connecting screw 15 is fixed at one end of the rod cone head 16, and a grid rod 17 is sleeved at the other end of the rod cone head 16, and a plurality of support plates 13 are provided in a circular array on the upper end of the base plate 14, and an arc-shaped notch is provided at the upper end of the support plate 13 corresponding to the position of the node bolt ball body 11. A limit rod 18 is fixed to the upper end of the base plate 14, and a stop rod 19 is fixed to the upper end of the limit rod 18. A connecting sleeve 20 is sleeved on the limit rod 18 and the stop rod 19. The connecting sleeve 20 is fixed in the second mounting hole at the bottom end of the node bolt ball body 11. A stopping mechanism is provided inside the node bolt ball body 11 for fixedly connecting the connecting sleeve 20 and the stop rod 19. The spherical connecting screw 12 is provided with a limiting mechanism for preventing the connecting screw 15 from loosening during use. The stopping mechanism facilitates the fixed connection between the node bolt ball body 11 and the base plate 14, and the limiting mechanism prevents the connecting screw 15 from loosening during use.

[0031] The stop mechanism includes two symmetrically arranged stop frames 21, a sliding groove is provided inside the connecting sleeve 20 at a position corresponding to the position of the stop frame 21, an annular limit groove is provided at one end of the stop rod 19 at a position corresponding to the position of the stop frame 21, and a limit slider 22 is fixed at one end of the stop frame 21. The stop frame 21 slides in the T-shaped slide groove at the inclined surface of the guide block 23, and the two guide sliders 23 are respectively fixed at one end of the mounting rod, and the two mounting rods are fixed at the bottom end of the arc block 24. The bottom end of the arc block 24 is fixedly connected to the output ends of two spring telescopic rods 25 respectively, and the other ends of the spring telescopic rods 25 are fixedly arranged in the installation chamber inside the node bolt ball body 11. The upper end of the arc block 24 is arranged in an arc shape, and a push rod 26 is slidably provided in the circular through-hole at one end of the ball connecting screw 12. A circular plate is fixed at both ends of the push rod 26. A tension spring 27 is provided between one side of the circular plate and one end of the ball connecting screw 12, and one end of the push rod 26 is in close contact with the arc surface of the upper end of the arc block 24.

[0032] During use, when it is necessary to build a grid frame, the connecting sleeve 20 is sleeved on the stop rod 19, and the node bolt ball body 11 is placed in the arc-shaped notches at the upper ends of the several support plates 13, and then the connecting screws 15 are installed one by one inside the spherical connecting screw tube 12. During the installation of the connecting screw 15, when one end of the connecting screw 15 contacts the circular plate at one end of the push rod 26, the connecting screw 15 pushes the push rod 26 to move. Since the other end of the push rod 26 is in close contact with the upper end of the arc block 24, the push rod 26 pushes the arc block 24 along the axis of the spring telescopic rod 25. When the arc block 24 moves, the limit slider 22 and the guide block 23 are used in conjunction with each other to make the stop frame 21 slide in the sliding groove inside the connecting sleeve 20. When the other end of the connecting screw 15 is in close contact with the other end of the spherical connecting screw 12, the arc block 24 stops moving. At this time, one end of the limit rod 18 moves into the annular limit groove, so that the stop rod 19 is fixedly connected to the connecting sleeve 20, so that the node bolt ball body 11 is fixedly connected to the base plate 14, and then the grid rod 17 is installed at one end of the rod cone head 16 to build the grid.

[0033] One end of the push rod 26 is provided with a ball, which is convenient for reducing the wear between the end of the push rod 26 and the arc surface of the arc block 24 when in use, and at the same time facilitates the push rod 26 to push the arc block 24 to move.

[0034] The cross section of the limiting rod 18 is rectangular, and when in use, it is convenient to limit the rotation of the node bolt ball body 11 during installation and use.

[0035] The limiting mechanism includes two symmetrically arranged push rods 29, each of which is fixed on the upper end of a sliding ring 30, and the sliding ring 30 is slidably arranged inside a mounting sleeve 28. The mounting sleeve 28 is fixed on one end of the ball connecting screw 12, and a baffle 34 is symmetrically provided at the bottom end of the sliding ring 30. A limiting frame 32 is closely attached to one side of the baffle 34, and a limiting cross bar 321 is fixed to one end of the limiting frame 32. A position corresponding to the position of the limiting cross bar 321 is provided on one side of the baffle 34. Rectangular groove, a guide slide rod is slidably provided in the circular through-hole on one side of the limit frame 32, and the guide slide rod is fixedly arranged inside the mounting sleeve 28. One side of the limit frame 32 abuts against one end of the second return spring 33, and the other end of the second return spring 33 abuts against one end inside the connecting tube. The connecting tube is fixed on the mounting sleeve 28, and one end of the limit frame 32 is slidably provided in the mounting groove on the spherical connecting screw 12, and a limit groove is provided on the connecting screw 15 corresponding to one end of the limit frame 32.

[0036] During use, when the connecting screw 15 is installed, as the connecting screw 15 rotates and screws into the spherical connecting screw tube 12, the inclined surface of the rod cone head 16 contacts one end of the push rod 29, and the connecting screw 15 continues to move, so that the push rod 26 pushes the sliding ring 30 to slide inside the installation sleeve 28 through the push rod 29. When the sliding ring 30 slides, it drives the baffle 34 to move. When the connecting screw 15 is installed, the rectangular groove on one side of the baffle 34 coincides with the limiting cross bar at one end of the limit frame 32. Under the action of the second return spring 33, one end of the limit frame 32 is inserted into the upper limit groove of the connecting screw 15, thereby fixing the connecting screw 15 to prevent the connecting screw 15 from falling off during use.

[0037] The bottom end of the limit frame 32 is provided with a shift plate. During use, when the connecting screw 15 needs to be disassembled, a tool is used to shift the limit frame 32 to slide, so that one end of the limit frame 32 is disengaged from the upper limit groove of the connecting screw 15, and then the connecting screw 15 is rotated to make the connecting screw 15 disengage from the inside of the spherical connecting screw tube 12. Under the action of the first return spring 31, the push rod 29, the sliding ring 30 and the baffle 34 return to their initial positions, and then the shift plate is released. Under the action of the second return spring 33, one side of the limit frame 32 is tightly attached to the side of the baffle 34, thereby limiting the limit frame 32.

[0038] Example 2

[0039] The difference from Example 1 is that a mounting plate 40 is coaxially provided below the base plate 14, and a plurality of fixed rotating blocks 36 are provided in a circular array at the bottom end of the base plate 14. The fixed rotating block 36 is rotatably connected to one end of the connecting rod 35, and the connecting rod 35 is connected to the fixed rotating block 36 by a second bolt. A retaining groove 37 is provided at the upper end of the mounting plate 40 corresponding to the position of the fixed rotating block 36, and the other end of the connecting rod 35 is in close contact with the retaining groove 37. Mounting columns are fixed on both sides of one end of the connecting rod 35, and a rotating plate 38 is rotatably provided on the mounting column. A first threaded hole is symmetrically provided on the upper end of the rotating plate 38, and a second threaded hole is provided at the upper end of the mounting plate 40 corresponding to the position of the first threaded hole. Fixing screws are provided in the first threaded hole and the second threaded hole, and a plurality of fixed mounting holes 39 are fixed on the upper end of the mounting plate 40.

[0040] During use, when it is necessary to fix the installation position of the node bolt ball body 11, the mounting plate 40 is fixed at the installation position by using the mounting screws in conjunction with the fixed mounting holes 39, and then one end of the connecting rod 35 is connected to the fixed rotating block 36, and the other end of the connecting rod 35 is connected to the retaining groove 37, and the rotating plate 38 is fixed by tightening the screws, thereby fixing the working position of the node bolt ball body 11. At the same time, connecting rods 35 of different lengths can also be used to adjust the working height of the node bolt ball body 11.

[0041] A plurality of fixed rotating blocks 36 are fixedly provided at the bottom end of the base plate 14 , and a retaining groove 37 is provided at the upper end of the mounting plate 40 corresponding to the fixed rotating blocks 36 , and a second threaded hole is provided at the upper end of the mounting plate 40 corresponding to the retaining groove 37 .

[0042] During use, without changing the length of the connecting rod 35, if it is necessary to adjust the installation height of the node bolt ball body 11, the two ends of the connecting rod 35 can be used in conjunction with the fixed rotating blocks 36 and the stop grooves 37 in different positions respectively, so that the angle between the connecting rod 35 and the mounting plate 40 is different, thereby adjusting the installation height of the node bolt ball body 11.

[0043] The above embodiment discloses a grid ball node assembly structure, wherein, when the grid is constructed, the mounting plate 40 is fixed to the installation position by using mounting screws in conjunction with the fixed mounting holes 39, and then one end of the connecting rod 35 is connected to the fixed rotating block 36, and the other end of the connecting rod 35 is connected to the retaining groove 37, and the rotating plate 38 is fixed by fastening screws, thereby fixing the working position of the node bolt ball body 11. When the installation height of the node bolt ball body 11 needs to be adjusted, the two ends of the connecting rod 35 can be used in conjunction with the fixed rotating blocks 36 and the retaining grooves 37 at different positions respectively, so that the angle between the connecting rod 35 and the mounting plate 40 is different, thereby adjusting the installation height of the node bolt ball body 11. At the same time, a number of fixed mounting holes 39 can also be provided at the upper end of the base plate 14, so that the base plate 14 can be directly installed.

[0044] It needs to be used according to the actual situation, and then the connecting sleeve 20 is sleeved on the stop rod 19, and the node bolt ball body 11 is in the arc-shaped notch at the upper end of the several support plates 13, and then the connecting screws 15 are installed one by one inside the spherical connecting screw tube 12. During the installation process of the connecting screw 15, when one end of the connecting screw 15 contacts the circular plate at one end of the push rod 26, the connecting screw 15 pushes the push rod 26 to move. Since the other end of the push rod 26 is in close contact with the upper end of the arc block 24, the push rod 26 pushes the arc block 24. The block 24 moves along the axis direction of the spring telescopic rod 25. When the arc block 24 moves, it cooperates with the limit slider 22 and the guide block 23 to make the stop frame 21 slide in the sliding groove inside the connecting sleeve 20. When the other end of the connecting screw 15 is in close contact with the other end of the spherical connecting screw 12, the arc block 24 stops moving. At this time, one end of the stop rod 19 moves into the annular limit groove, so that the stop rod 19 is fixedly connected to the connecting sleeve 20, so that the node bolt ball body 11 is fixedly connected to the base plate 14.

[0045] Then the grid rod 17 is installed at one end of the rod cone head 16 to build the grid. When the connecting screw 15 is installed, as the connecting screw 15 rotates and screws into the spherical connecting screw tube 12, the inclined surface of the rod cone head 16 contacts one end of the push rod 29, and the connecting screw 15 continues to move, so that the push rod 26 pushes the sliding ring 30 to slide inside the installation sleeve 28 through the push rod 29. When the sliding ring 30 slides, it drives the baffle 34 to move. When the connecting screw 15 is installed, the rectangular groove on one side of the baffle 34 coincides with the limiting cross bar at one end of the limit frame 32. Under the action of the second return spring 33, one end of the limit frame 32 is inserted into the upper limit groove of the connecting screw 15, thereby fixing the connecting screw 15 to prevent the connecting screw 15 from falling off during use. When the connecting screw 15 needs to be disassembled, use a tool to move the limit frame 32 to slide, so that one end of the limit frame 32 disengages from the upper limit groove of the connecting screw 15, and then rotate the connecting screw 15 to disengage from the inside of the spherical connecting screw tube 12. Under the action of the first return spring 31, the push rod 29, the sliding ring 30 and the baffle 34 return to their initial positions, and then release the plate. Under the action of the second return spring 33, one side of the limit frame 32 is tightly attached to the side of the baffle 34, thereby limiting the limit frame 32.

[0046] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A truss ball node assembly structure, comprising a node bolt ball body (11) and a base plate (14), wherein the node bolt ball body (11) is provided with a plurality of first mounting holes, wherein a spherical connecting screw tube (12) is fixedly provided inside the first mounting hole, wherein the threaded hole inside the spherical connecting screw tube (12) is threadedly matched with a connecting screw rod (15), wherein the connecting screw rod (15) is fixedly provided at one end of a rod cone head (16), and a truss rod (17) is sleeved at the other end of the rod cone head (16), wherein a plurality of support plates (13) are provided in a circumferential array at the upper end of the base plate (14), wherein an arc-shaped notch is provided at the upper end of the support plate (13) at a position corresponding to the position of the node bolt ball body (11), and wherein: A limiting rod (18) is fixedly provided on the upper end of the base plate (14), a stop rod (19) is fixedly provided on the upper end of the limiting rod (18), a connecting sleeve (20) is sleeved on the limiting rod (18) and the stop rod (19), and the connecting sleeve (20) is fixedly provided in the second mounting hole at the bottom end of the node bolt ball body (11); A stop mechanism for fixedly connecting the connecting sleeve (20) and the stop rod (19) is provided inside the node bolt ball body (11); The spherical connecting screw tube (12) is provided with a limiting mechanism for preventing the connecting screw rod (15) from loosening during use.

2. A grid ball node assembly structure according to claim 1, characterized in that: The stop mechanism comprises two symmetrically arranged stop frames (21), a sliding groove is provided inside the connecting sleeve (20) at a position corresponding to the position of the stop frame (21), an annular limiting groove is provided at one end of the stop rod (19) at a position corresponding to the position of the stop frame (21), a limiting slider (22) is fixed at one end of each stop frame (21), the stop frame (21) is slidably arranged in a T-shaped sliding groove at the inclined surface of the guide block (23), the two guide sliders (23) are respectively fixed at one end of the mounting rod, and the two mounting rods are fixed at the bottom end of the arc block (24), the arc block The bottom ends of the springs (24) are respectively fixedly connected to the output ends of the two spring telescopic rods (25). The other ends of the spring telescopic rods (25) are fixedly arranged in the installation chamber inside the node bolt ball body (11). The upper end of the arc block (24) is arranged in an arc shape. A push rod (26) is slidably arranged in the circular through hole at one end of the ball connecting screw tube (12). A circular plate is fixedly arranged at both ends of the push rod (26). A tension spring (27) is arranged between one side of the circular plate and one end of the ball connecting screw tube (12). One end of the push rod (26) is in close contact with the arc surface of the upper end of the arc block (24).

3. A grid ball node assembly structure according to claim 2, characterized in that: One end of the push rod (26) is provided with a ball.

4. The grid ball node assembly structure according to claim 2, characterized in that: The cross section of the limiting rod (18) is rectangular.

5. The grid ball node assembly structure according to claim 1, characterized in that: The limiting mechanism comprises two symmetrically arranged push rods (29), the push rods (29) are fixedly arranged at the upper end of the sliding ring (30), the sliding ring (30) is slidably arranged inside the mounting sleeve (28), the mounting sleeve (28) is fixedly arranged at one end of the ball connecting screw (12), the bottom end of the sliding ring (30) is symmetrically provided with a baffle (34), one side of the baffle (34) is closely provided with a limiting frame (32), one end of the limiting frame (32) is fixedly provided with a limiting cross bar (321), and one side of the baffle (34) is positioned relative to the limiting cross bar (321). A rectangular groove is provided at the corresponding position, a guide slide is provided in the circular through-hole on one side of the limit frame (32), and the guide slide is fixedly arranged inside the mounting sleeve (28). One side of the limit frame (32) abuts against one end of the second return spring (33), and the other end of the second return spring (33) abuts against one end inside the connecting pipe. The connecting pipe is fixed on the mounting sleeve (28), and one end of the limit frame (32) is slidably arranged in the mounting groove on the spherical connecting screw (12). A limit groove is provided on the connecting screw (15) at a position corresponding to one end of the limit frame (32).

6. The grid ball node assembly structure according to claim 5, characterized in that: The bottom end of the limiting frame (32) is provided with a dial plate.

7. The grid ball node assembly structure according to claim 1, characterized in that: A mounting plate (40) is coaxially provided below the base plate (14), and a plurality of fixed rotating blocks (36) are provided in a circumferential array at the bottom end of the base plate (14). The fixed rotating block (36) is rotatably connected to one end of the connecting rod (35), and the connecting rod (35) is connected to the fixed rotating block (36) by a second bolt. A stop groove (37) is provided at the upper end of the mounting plate (40) corresponding to the position of the fixed rotating block (36), and the other end of the connecting rod (35) is tightly attached to the stop groove (37). Mounting columns are fixed on both sides of one end of the connecting rod (35), and a rotating plate (38) is rotatably provided on the mounting column. A first threaded hole is symmetrically provided at the upper end of the rotating plate (38), and a second threaded hole is provided at the upper end of the mounting plate (40) corresponding to the position of the first threaded hole. Fixing screws are provided in the first threaded hole and the second threaded hole. A plurality of fixed mounting holes (39) are fixed at the upper end of the mounting plate (40).

8. The grid ball node assembly structure according to claim 7, characterized in that: A plurality of fixed rotating blocks (36) are fixedly provided at the bottom end of the base plate (14); a retaining groove (37) is provided at the upper end of the mounting plate (40) at positions corresponding to the fixed rotating blocks (36); and a second threaded hole is provided at the upper end of the mounting plate (40) at positions corresponding to the retaining groove (37).

9. A method for using the grid ball node assembly structure according to any one of claims 1 to 8, characterized in that: The following steps are included: Step 1: Fix the mounting plate (40) at the mounting location by installing screws, then connect the two ends of the connecting rod (35) to the fixed rotating block (36) and the retaining groove (37) respectively, and fix the rotating plate (38) by tightening the screws, thereby fixing the working position of the node bolt ball body (11). The two ends of the connecting rod (35) can be used in conjunction with the fixed rotating blocks (36) and the retaining groove (37) at different positions, so that the angle between the connecting rod (35) and the mounting plate (40) is different, thereby adjusting the installation height of the node bolt ball body (11); Step 2: Sleeve the connecting sleeve (20) onto the stop rod (19), and the node bolt ball body (11) is located at the arc-shaped notches at the upper ends of the several support plates (13). The connecting screws (15) are installed one by one inside the spherical connecting screw tube (12). The connecting screws (15) push the top rod (26) to move. The stop frame (21) slides in the sliding groove inside the connecting sleeve (20) through the use of the limiting slider (22) and the guide block (23). One end of the stop rod (19) moves into the annular limiting groove, so that the stop rod (19) is fixedly connected to the connecting sleeve (20), so that the node bolt ball body (11) is fixedly connected to the bottom plate (14), and then the grid rod (17) is installed on one end of the rod cone head (16), so as to build the grid; Step 3: As the connecting screw (15) is rotated and screwed into the interior of the spherical connecting screw tube (12), the inclined surface of the rod cone head (16) contacts one end of the push rod (29), and the push rod (26) pushes the sliding ring (30) to slide inside the installation sleeve (28) through the push rod (29). When the sliding ring (30) slides, the baffle (34) is driven to move. When the connecting screw (15) is installed, one end of the limit frame (32) is inserted into the upper limit groove of the connecting screw (15), thereby fixing the connecting screw (15). When the connecting screw (15) needs to be disassembled, use a tool to move the limit frame (32) so that one end of the limit frame (32) is disengaged from the upper limit groove of the connecting screw (15), and then rotate the connecting screw (15) so that the connecting screw (15) is disengaged from the interior of the spherical connecting screw tube (12).

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