Rotating connection structure for erecting scaffolding main nodes

Abstract

The present invention discloses a rotary connection structure for erecting the main node of a scaffold, and belongs to the technical field of design and manufacturing of construction process equipment for building engineering. A rotary connection structure with good force-bearing effect and the ability to eliminate lateral force on columns is provided. The rotary connection structure includes a scaffolding steel pipe, and the rotary connection structure also includes a column node connection assembly and a horizontal node composite connection assembly. The column node connection assembly is detachably hinged at the geometric center of the horizontal node composite connection assembly in the vertical direction; the columns of the scaffolding steel pipe are detachably connected to form a whole through the column node connection assembly, the transverse horizontal bars of the scaffolding steel pipe are detachably connected to form a whole through the horizontal node composite connection assembly in the transverse direction in the same horizontal plane, and the longitudinal horizontal bars of the scaffolding steel pipe are detachably connected to form a whole through the horizontal node composite connection assembly in the longitudinal direction in the same horizontal plane; the transverse horizontal bars and the longitudinal horizontal bars are located in the same horizontal plane.

Description

Technical Field

[0001] The invention relates to a rotary connection structure, in particular to a rotary connection structure used for erecting a main node of a scaffold, and belongs to the technical field of design and manufacturing of construction process equipment for building engineering. Background Art

[0002] Scaffolding is an indispensable facility for construction projects, height-based operations, and edge work. Currently, domestic construction scaffolding is mostly constructed using steel pipes, fasteners, planks, bases, and brackets. The joints between vertical poles, horizontal bars, and vertical bars are called primary nodes.

[0003] The stress characteristics of the scaffolding are as follows: the uprights are the main load-bearing components, bearing the main construction loads and the greatest stress; the stress at the main nodes is the most complex.

[0004] At present, the fasteners used for scaffolding in China are mainly composed of cast iron clamps and fastening steel bolts. The friction generated by tightening the bolts forms a constraint mechanism. Its characteristics are: first, the horizontal bars and vertical bars are overlapped on different surfaces. After the load is applied, the vertical bars are compressed downward by the extrusion force, causing the horizontal bars to bend and increasing the internal force of the horizontal bars, which is not conducive to the overall stress and stability of the scaffolding; second, the bolts are easily corroded, making installation and disassembly difficult, and prone to thread slippage and insufficient friction between the steel pipe and the fasteners, posing a safety hazard; third, the tightness of the bolts needs to be adjusted for each installation and disassembly, and the installation and disassembly workload is extremely large; finally, when the scaffolding is dismantled, after the horizontal bars are removed, the horizontal constraints of the vertical bars are reduced, resulting in a decrease in the stability of the vertical bars to be removed, often causing the vertical bars to bend, deform, and damage, and posing a safety hazard. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a rotating connection structure for erecting a main node of a scaffold, which has a good force-bearing effect and can eliminate the lateral force of a column.

[0006] The technical solution adopted to solve the above technical problems is: a rotating connection structure for erecting the main node of the scaffolding, including a scaffolding steel pipe, the rotating connection structure also includes a column node connection assembly and a horizontal node composite connection assembly, the column node connection assembly is detachably hinged at the geometric center of the horizontal node composite connection assembly along the vertical direction; the columns of the scaffolding steel pipe are detachably connected as a whole through the column node connection assembly, the transverse horizontal bars of the scaffolding steel pipe are detachably connected as a whole through the horizontal node composite connection assembly in the transverse direction within the same horizontal plane, and the longitudinal horizontal bars of the scaffolding steel pipe are detachably connected as a whole through the horizontal node composite connection assembly in the longitudinal direction within the same horizontal plane; the transverse horizontal bars and longitudinal horizontal bars respectively connected as a whole through the horizontal node composite connection assembly are located in the same horizontal plane.

[0007] Furthermore, the rotating connection structure also includes a reset protective shell structure, and the column node connection component and the horizontal node composite connection component are adaptively positioned and sleeved on the reset protective shell structure. The two joints of the column node connection component extend from the upper and lower sides of the reset protective shell structure, and the four joints of the horizontal node composite connection component extend from the reset protective shell structure symmetrically from the front, back, left and right directions.

[0008] The preferred embodiment of the above scheme is that the reset protection shell structure includes a drum-shaped shell and an elastic reset member, and through holes corresponding to the outer diameters of the two joints of the column node connection assembly are respectively provided on the top and bottom side surfaces of the drum-shaped shell, and adjustment long holes extending along the circumference are respectively provided on the four circumferential sides of the drum-shaped shell, and the four joints of the horizontal node composite connection assembly are respectively adjustable in position and extend out of the drum-shaped shell from the respective adjustment long holes, and the two joints of the column node connection assembly respectively extend out of the drum-shaped shell from the top and bottom side surfaces; the horizontal node composite connection assembly is adjustably arranged at the geometric center of the drum-shaped shell along the horizontal plane through the elastic reset member.

[0009] Furthermore, the column node connection assembly includes a vertical node connection shaft and a vertical quick-release connection member group. A mounting hole extending vertically is provided at the geometric center of the horizontal node composite connection assembly. The two joints of the column node connection assembly are composed of the upper and lower ends of the vertical node connection shaft extending out of the drum-shaped shell. The outer diameters of the upper and lower ends of the vertical node connection shaft are adapted to the inner diameter of the column. The diameter of the mounting hole is 1.2 times the diameter of the through hole provided on the top and bottom sides of the drum-shaped shell. The vertical node connection shaft connected to the mounting hole and the through hole is movably hinged to the horizontal node composite connection assembly in the drum-shaped shell with the cooperation of the vertical quick-release connection member group. The upper and lower ends of the vertical node connection shaft are respectively inserted into the inner holes of the upper and lower columns and are locked and connected with the cooperation of the vertical quick-release connection member group.

[0010] The preferred embodiment of the above scheme is that the vertical quick-release connecting part group includes two vertical shaft clamping rings and two pins, and pin holes are respectively provided on the upper and lower ends of the vertical node connecting shaft, and pin holes are also provided at the ends of each column. The vertical node connecting shaft connected to the mounting hole and the through hole is movably arranged on the horizontal node composite connection assembly in the drum-shaped shell through the two vertical shaft clamping rings, and the columns sleeved on the upper and lower ends of the vertical node connecting shaft are respectively detachably connected to the pin holes through corresponding pins to form a whole.

[0011] Furthermore, the horizontal node composite connection assembly includes at least a transverse axis, a longitudinal axis and a node complex, the mounting hole is vertically arranged at the geometric center of the node complex, the transverse axis and the longitudinal axis are respectively symmetrically distributed on the node complex along the circumferential direction through one end of each, the transverse axis and the longitudinal axis respectively extend out of the adjustment long holes on the corresponding sides of the drum shell through the other end of each, the elastic reset components of the reset protection shell structure are respectively connected between the drum shell and the node complex at the corresponding positions, and the four joints of the horizontal node composite connection assembly are respectively composed of the ends of the transverse axis and the longitudinal axis extending out of the adjustment long holes on the corresponding sides of the drum shell; during the erection of the main node of the scaffolding, the end of the transverse axis extending out of the corresponding adjustment long hole can be detachably inserted into the inner hole of the corresponding transverse horizontal rod, and the end of the longitudinal axis extending out of the corresponding adjustment long hole can be detachably inserted into the inner hole of the corresponding longitudinal horizontal rod.

[0012] The preferred embodiment of the above scheme is that the horizontal node composite connection assembly also includes a horizontal quick-release connection group consisting of four horizontal axis clamps and four pins, and pin holes are also respectively provided on the four joints of the horizontal node composite connection assembly and the corresponding transverse horizontal rods and the corresponding longitudinal horizontal rods; during the erection of the main node of the scaffolding, the lengths of the transverse axis and the longitudinal axis inserted into the corresponding transverse horizontal rods and the corresponding longitudinal horizontal rods are respectively limited by each horizontal axis clamp, and are detachably connected as a whole with the cooperation of each pin and the corresponding pin hole.

[0013] Furthermore, the transverse axis and the longitudinal axis are an integral structure with the node complex.

[0014] The beneficial effects of the present invention are as follows: the technical solution provided by the present application is aimed at the technical problems existing in the prior art. It is based on the scaffolding steel pipe and forms the rotating connection structure of the present application by adding a column node connection assembly and a horizontal node composite connection assembly, and the column node connection assembly is detachably hinged vertically at the geometric center of the horizontal node composite connection assembly; then, during the scaffolding erection process, the columns of the scaffolding steel pipe are detachably connected as a whole through the column node connection assembly, the transverse horizontal bars of the scaffolding steel pipe are detachably connected as a whole through the horizontal node composite connection assembly in the transverse direction within the same horizontal plane, and the longitudinal horizontal bars of the scaffolding steel pipe are detachably connected as a whole through the horizontal node composite connection assembly in the longitudinal direction within the same horizontal plane; and it is ensured that the transverse horizontal bars and the longitudinal horizontal bars respectively connected as a whole through the horizontal node composite connection assembly are located in the same horizontal plane. Because the longitudinal and transverse horizontal bars of the scaffolding steel pipe are connected to the columns via the horizontal node composite connection assembly, they are all located in the same plane, eliminating the disadvantage of the prior art that the longitudinal and transverse horizontal bars are not located in the same plane when connected to the columns. This effectively eliminates the lateral bending forces on the columns that are not located in the same plane, achieving the goal of improving the stress-bearing effect. At the same time, by further improving the column node connection assembly and the horizontal node composite connection assembly, the prior art can also solve the technical problems of the complex overall stress of the scaffolding during use when using conventional fasteners, the heavy workload of fastener anti-corrosion maintenance, the difficulty in determining whether the friction between the fastener and the steel pipe meets the standards, the heavy workload of installation and removal, and the significant safety hazards during removal. By optimizing the main node fasteners of the scaffolding and allowing the horizontal bars of the main nodes to rotate appropriately, the internal stress on the horizontal bars is eliminated or reduced, thereby increasing the overall stability of the scaffolding. Furthermore, the conventional fastener bolt fastening connection is changed to a butt pin fastening method, which facilitates installation and removal, eliminates the anti-corrosion maintenance work at the bolt area, and reduces the overall workload of the scaffolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic cross-sectional view of the rotary connection structure used for erecting a main node of a scaffold according to the present invention;

[0016] Figure 2 This is an exploded view of the rotary connection structure used for erecting a scaffold main node according to the present invention;

[0017] Figure 3 This is an exploded view of the connection between the rotating connection structure used for erecting the main node of the scaffolding and the corresponding parts of the scaffolding steel pipe.

[0018] Markings in the figure are: column 1, transverse horizontal rod 2, longitudinal horizontal rod 3, drum-shaped shell 4, joint 5, adjustment long hole 6, vertical node connecting shaft 7, vertical shaft clamping ring 8, pin 9, pin hole 10, transverse shaft 11, longitudinal shaft 12, node complex 13, through hole 14, mounting hole 15, horizontal shaft clamping ring 16. DETAILED DESCRIPTION

[0019] like Figure 1 、 Figure 2 as well as Figure 3The present invention shows a rotating connection structure for the main node installation of a scaffolding, which has a good stress-bearing effect and can eliminate lateral stress on columns. The rotating connection structure includes a scaffolding steel pipe, and the rotating connection structure also includes a column node connection assembly and a horizontal node composite connection assembly. The column node connection assembly is detachably hinged at the geometric center of the horizontal node composite connection assembly in the vertical direction; the column 1 of the scaffolding steel pipe is detachably connected to form a whole through the column node connection assembly, the transverse horizontal rod 2 of the scaffolding steel pipe is detachably connected to form a whole in the same horizontal plane in the transverse direction through the horizontal node composite connection assembly, and the longitudinal horizontal rod 3 of the scaffolding steel pipe is detachably connected to form a whole in the same horizontal plane in the longitudinal direction through the horizontal node composite connection assembly; the transverse horizontal rod 2 and the longitudinal horizontal rod 3, which are respectively connected to form a whole through the horizontal node composite connection assembly, are located in the same horizontal plane. The technical solution provided by the present application is aimed at the technical problems existing in the prior art. It is based on the scaffolding steel pipe and forms the rotating connection structure of the present application by adding a column node connection assembly and a horizontal node composite connection assembly, and the column node connection assembly is detachably hinged at the geometric center of the horizontal node composite connection assembly along the vertical direction; then, during the scaffolding erection process, the columns of the scaffolding steel pipe are detachably connected as a whole through the column node connection assembly, the transverse horizontal bars of the scaffolding steel pipe are detachably connected as a whole through the horizontal node composite connection assembly along the horizontal direction in the same horizontal plane, and the longitudinal horizontal bars of the scaffolding steel pipe are detachably connected as a whole through the horizontal node composite connection assembly along the longitudinal direction in the same horizontal plane; and it is ensured that the transverse horizontal bars and the longitudinal horizontal bars respectively connected as a whole through the horizontal node composite connection assembly are located in the same horizontal plane. Since the longitudinal horizontal bars and transverse horizontal bars of the scaffolding steel pipe are respectively in the same plane when connected to the columns through the horizontal node composite connection assembly, the disadvantage of the prior art that the longitudinal horizontal bars and transverse horizontal bars are not in the same plane when connected to the columns is eliminated, and the lateral bending force on the columns that is not in the same plane can be effectively eliminated, thereby achieving the purpose of improving the force effect. At the same time, in order to achieve the appropriate movement of the transverse horizontal bars and the longitudinal horizontal bars in the horizontal plane, the rotary connection structure described in the present application also includes a reset protection shell structure, the column node connection assembly and the horizontal node composite connection assembly are appropriately positioned and sleeved on the reset protection shell structure, the two joints of the column node connection assembly extend from the upper and lower sides of the reset protection shell structure, and the four joints of the horizontal node composite connection assembly extend from the reset protection shell structure symmetrically from the front, back, left and right four directions.Specifically, the reset protection housing structure includes a drum-shaped housing 4 and an elastic reset member. Through holes 14 corresponding to the outer diameters of the two joints 5 of the column node connection assembly are provided on the top and bottom sides of the drum-shaped housing 4. Adjustment slots 6 extending along the circumference are provided on the four circumferential sides of the drum-shaped housing 4. The four joints 5 of the horizontal node composite connection assembly are adjustable and extend from the drum-shaped housing 4 through each adjustment slot 6. The two joints 5 of the column node connection assembly extend from the drum-shaped housing 4 through the top and bottom sides. The horizontal node composite connection assembly is adjustably arranged at the geometric center of the drum-shaped housing 4 along the horizontal plane via the elastic reset member. Thus, the coordination of the vertical rods and the drum-shaped housing 4 at the elastic reset member allows the horizontal rods 2 and the longitudinal rods 3 to be properly positioned in the horizontal plane.

[0020] Accordingly, in order to facilitate the erection of the scaffolding and simplify the structure of the column node connection assembly and the horizontal node composite connection assembly of the present application, and to facilitate manufacturing and subsequent use, the column node connection assembly of the present application includes a vertical node connection shaft 7 and a vertical quick-release connection member group. A mounting hole 15 extending vertically is provided at the geometric center of the horizontal node composite connection assembly. The two joints 5 of the column node connection assembly are composed of the upper and lower ends of the vertical node connection shaft 7 extending out of the drum-shaped shell 4. The outer diameters of the upper and lower ends of the vertical node connection shaft 7 are adapted to the inner diameter of the column 1, and the diameter of the mounting hole is 1.2 times the diameter of the through hole provided on the top and bottom sides of the drum-shaped shell; the vertical node connection shaft 7 connected to the mounting hole 15 and the through hole 14 is movably hinged to the horizontal node composite connection assembly in the drum-shaped shell 4 with the cooperation of the vertical quick-release connection member group, and the upper and lower ends of the vertical node connection shaft 7 are respectively inserted into the inner holes of the upper and lower columns 1 and locked in connection with the cooperation of the vertical quick-release connection member group. The horizontal node composite connection assembly of the present application includes at least a transverse axis 11, a longitudinal axis 12 and a node complex 13, and the mounting hole 15 is vertically arranged at the geometric center of the node complex. The transverse axis 11 and the longitudinal axis 12 are respectively symmetrically distributed on the node complex 13 along the circumferential direction through one end of each. The transverse axis 11 and the longitudinal axis 12 respectively extend out of the adjustment long hole 6 on the corresponding side of the drum shell 4 through the other end of each. The elastic reset components of the reset protective shell structure are respectively connected between the drum shell 4 and the node complex 13 at the corresponding positions. The four joints 5 of the horizontal node composite connection assembly are respectively composed of the ends of the transverse axis 11 and the longitudinal axis 12 extending out of the adjustment long hole 6 on the corresponding side of the drum shell 4; during the erection of the main node of the scaffolding, the end of the transverse axis 11 extending out of the corresponding adjustment long hole 6 can be detachably inserted into the inner hole of the corresponding transverse horizontal rod 2, and the end of the longitudinal axis 12 extending out of the corresponding adjustment long hole 6 can be detachably inserted into the inner hole of the corresponding longitudinal horizontal rod 3.

[0021] More specifically, the vertical quick-release connector group of the present application includes two vertical shaft clamping rings 8 and two pins 9. Pin holes 10 are respectively provided on the upper and lower ends of the vertical node connecting shaft 7, and pin holes 10 are also provided at the ends of each column 1. The vertical node connecting shaft 7 connected to the mounting hole and the through hole is movably arranged on the horizontal node composite connection assembly in the drum-shaped shell 4 through the two vertical shaft clamping rings 8. The columns 1 sleeved on the upper and lower ends of the vertical node connecting shaft 7 are respectively detachably connected to the pin holes 10 through the corresponding pins 9 and are quickly connected as a whole. The horizontal node composite connection assembly also includes a horizontal quick-release connector group consisting of four horizontal shaft clamps 16 and four latches 9. Latch holes 10 are also provided on the four joints 5 of the horizontal node composite connection assembly and the corresponding horizontal horizontal bars 2 and the corresponding longitudinal horizontal bars 3. During the erection of the main node of the scaffold, the lengths of the horizontal shaft 11 and the longitudinal shaft 12 inserted into the corresponding horizontal horizontal bars 2 and the corresponding longitudinal horizontal bars 3 are limited by the horizontal shaft clamps 16, and are detachably connected as a whole under the cooperation of the latches 9 and the corresponding latch holes 10. At this time, the preferred structure is that the horizontal shaft 11 and the longitudinal shaft 12 are an integral structure with the node complex 13. In this way, by further improving the column node connection assembly and the horizontal node composite connection assembly, the technical problems in the prior art, such as the complex overall force of the scaffold during use when conventional fasteners are used, the heavy workload of fastener anti-corrosion maintenance, the difficulty in determining whether the friction between the fasteners and the steel pipes meets the standards, the heavy workload of installation and disassembly, and the great safety hazards during the dismantling process, are also solved. By optimizing the scaffolding's main node fasteners and allowing for appropriate rotation of the horizontal rods, internal stress on the horizontal rods is eliminated or reduced, increasing the scaffolding's overall stability. Furthermore, the conventional fastener bolt fastening method is replaced with a butt-pin fastening method, making installation and removal easier, eliminating the need for anti-corrosion maintenance work on the bolted parts, and reducing the overall scaffolding workload.

[0022] In summary, the technical solution provided by this application also has the following advantages:

[0023] 1. By optimizing the fastener structure, the vertical poles and horizontal poles of the scaffolding are subjected to stress in the same plane, which reduces the internal stress of the horizontal poles, prevents the bending of the horizontal poles and the overall deformation of the scaffolding, enhances the overall stability of the scaffolding and the life of the steel pipes, improves the safety of the scaffolding and saves costs.

[0024] 2. The fasteners and steel pipes are fixed with pins, which is faster than the bolt fastening connection of conventional fasteners, so that the scaffolding can be installed and disassembled quickly. At the same time, it eliminates the anti-corrosion and maintenance work of the bolt parts, reduces the overall workload of the scaffolding, saves a lot of labor and material costs, and thus reduces the cost of using the scaffolding.

[0025] 3. The use of butt pin fastening method eliminates the problem of conventional fastener bolts (threads) prone to thread slippage and insufficient tightening force, eliminating safety hazards during the erection, use and dismantling of scaffolding.

[0026] 4. By optimizing the fasteners, the control of the horizontal spacing, longitudinal spacing and step distance (vertical spacing) of the scaffolding is more convenient. The scaffolding can be designed in advance according to the specifications and the materials can be cut in a centralized and unified manner, which is conducive to the unified processing and classified stacking of scaffolding steel pipes, and is conducive to the acceptance, erection and dismantling of the scaffolding, saving construction time and costs.

[0027] The technical solution of this application is further described below through specific embodiments:

[0028] Current fasteners used in scaffolding can only be used to connect horizontal and vertical bars at different planes. This increases the internal stress in the horizontal bars when loaded, which is detrimental to the overall stability of the scaffold. Furthermore, the bolts in these fasteners are prone to rust and thread stripping, making it difficult to control the tightening force, posing a safety hazard. Furthermore, the bolts need to be adjusted for tightness every time they are installed or removed, making installation and removal a significant workload.

[0029] Based on the above characteristics, the technical solution adopted by the present invention is:

[0030] 1. The fasteners are integrally formed in the horizontal (transverse and longitudinal) directions, and are hinged in the horizontal and vertical directions, forming a three-axis mutual constraint mechanism, thereby optimizing the fastener structure. Compared to conventional fasteners that can only connect in two directions at the main node, this achieves a common connection in the horizontal, longitudinal, and vertical directions of the scaffolding, allowing the horizontal and longitudinal steel pipes to be arranged on the same horizontal plane, making the overall force of the scaffolding more reasonable.

[0031] 2. The joints in three directions are hinged to allow the steel pipes in the horizontal direction (including horizontal and longitudinal directions) to rotate appropriately to eliminate or reduce the internal stress between the horizontal and longitudinal steel pipes and reduce the deformation of the steel pipes caused by loads.

[0032] 3. Set up fastener shells to increase the ability of the scaffolding main nodes to withstand external mechanical impacts, thereby improving the safety of the scaffolding and the service life of the fasteners.

[0033] 4. The steel pipe and fasteners are fixed with butt pins, which is easier to install and remove than conventional fasteners with bolts.

[0034] Example 1

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0036] like Figure 1 、 Figure 2 、 Figure 3The components of the rotatable scaffolding main node fastener shown include a vertical axis, a horizontal axis, a longitudinal axis, a shell, and a pin.

[0037] Among them, the vertical shaft is provided with a joint and a clamping ring; the transverse shaft is provided with a joint and a clamping ring, the longitudinal shaft is provided with a joint and a clamping ring, the transverse shaft and the longitudinal shaft are formed as one piece, and a hinge hole is provided at the intersection of the transverse shaft and the longitudinal shaft; the joint is used to connect the steel pipe and the fastener, and the clamping ring is used to constrain the relative positions of each shaft and the steel pipe.

[0038] After the transverse axis and the longitudinal axis are formed as one piece, the vertical axis is connected to the transverse axis and the longitudinal axis through a hinge hole. The three axes form a mutual constraint mechanism through their respective retaining rings, but the transverse axis and the longitudinal axis can rotate appropriately around the vertical axis, and the three axes can always remain perpendicular to each other during rotation.

[0039] In order to protect the core parts of the fastener, a shell is used to protect the connection parts of the vertical axis, transverse axis and longitudinal axis of the fastener. The shell is also divided into three directions: transverse, longitudinal and vertical. Among them, the transverse and longitudinal ends of the shell are provided with rotation holes to support the appropriate rotation of the transverse axis and the longitudinal axis. The vertical shell is provided with a hinge hole, and the vertical axis passes through the hinge hole, so that the vertical axis, transverse axis, longitudinal axis and shell are connected to form a whole.

[0040] Pin holes are provided on the joints and steel pipes in all directions of the vertical axis, the horizontal axis and the longitudinal axis.

[0041] During formal implementation, the vertical steel pipes, horizontal steel pipes and longitudinal steel pipes are aligned with the pin holes on the vertical axis, horizontal axis and longitudinal axis respectively, and the pins are inserted to complete the connection between the fasteners and the steel pipes. After arranging them in this order, the required scaffolding can be formed.

Claims

1. A rotary connection structure for erecting a scaffolding main node, comprising a scaffolding steel pipe, characterized in that: The rotating connection structure further comprises a column node connection assembly and a horizontal node composite connection assembly, wherein the column node connection assembly is detachably hinged at the geometric center of the horizontal node composite connection assembly in the vertical direction; the column (1) of the scaffolding steel pipe is detachably connected to form a whole through the column node connection assembly, the transverse horizontal rod (2) of the scaffolding steel pipe is detachably connected to form a whole through the horizontal node composite connection assembly in the transverse direction in the same horizontal plane, and the longitudinal horizontal rod (3) of the scaffolding steel pipe is detachably connected to form a whole through the horizontal node composite connection assembly in the longitudinal direction in the same horizontal plane; the transverse horizontal rod (2) and the longitudinal horizontal rod (3) respectively connected to form a whole through the horizontal node composite connection assembly are located in the same horizontal plane, The rotary connection structure also includes a reset protection shell structure. The column node connection assembly and the horizontal node composite connection assembly are adapted to be sleeved on the reset protection shell structure. The two joints of the column node connection assembly extend from the upper and lower sides of the reset protection shell structure. The four joints of the horizontal node composite connection assembly extend from the four directions of front, back, left and right symmetrically to each other. The reset protection shell structure includes a drum shell (4) and an elastic reset member. Through holes (14) adapted to the outer diameters of two joints (5) of the column node connection assembly are respectively provided on the top and bottom side surfaces of the drum shell (4). Adjustment long holes (6) extending along the circumference are respectively provided on the four circumferential side surfaces of the drum shell (4). The four joints (5) of the horizontal node composite connection assembly are respectively adjustable in position and extend out of the drum shell (4) from the respective adjustment long holes (6). The two joints (5) of the column node connection assembly are respectively extended out of the drum shell (4) from the top and bottom side surfaces. The horizontal node composite connection assembly is adjustably arranged at the geometric center of the drum shell (4) along the horizontal plane through the elastic reset member. The column node connection assembly comprises a vertical node connection shaft (7) and a vertical quick-release connection piece group. A mounting hole (15) extending vertically is provided at the geometric center of the horizontal node composite connection assembly. The two joints (5) of the column node connection assembly are formed by the upper and lower ends of the vertical node connection shaft (7) extending out of the drum shell (4). The outer diameters of the upper and lower ends of the vertical node connection shaft (7) are adapted to the inner diameter of the column (1). The diameter of the mounting hole is 1.2 times the diameter of the through hole provided on the top and bottom sides of the drum shell. The vertical node connection shaft (7) passing through the mounting hole (15) and the through hole (14) is movably hinged to the horizontal node composite connection assembly in the drum shell (4) in cooperation with the vertical quick-release connection piece group. The upper and lower ends of the vertical node connection shaft (7) are respectively inserted into the inner holes of the upper and lower columns (1) and locked in cooperation with the vertical quick-release connection piece group.

2. The rotary connection structure for erecting a scaffolding main node according to claim 1 is characterized in that: The vertical quick-release connector assembly includes two vertical shaft clamping rings (8) and two latches (9). Latch holes (10) are respectively provided on the upper and lower ends of the vertical node connecting shaft (7). Latch holes (10) are also provided on the ends of each column (1). The vertical node connecting shaft (7) connected to the installation hole and the through hole is movably arranged on the horizontal node composite connection assembly in the drum shell (4) through the two vertical shaft clamping rings (8). The columns (1) sleeved on the upper and lower ends of the vertical node connecting shaft (7) are detachably connected to the latch holes (10) through corresponding latches (9) to form a whole.

3. The rotary connection structure for erecting a scaffold main node according to any one of claims 1 to 2, characterized in that: The horizontal node composite connection assembly comprises at least a transverse axis (11), a longitudinal axis (12) and a node complex (13), wherein the mounting hole (15) is vertically arranged at the geometric center of the node complex, the transverse axis (11) and the longitudinal axis (12) are respectively symmetrically distributed on the node complex (13) along the circumferential direction through one end thereof, the transverse axis (11) and the longitudinal axis (12) respectively extend through the other end thereof through the adjustment long hole (6) on the corresponding side of the drum shell (4), and the elastic reset components of the reset protection shell structure are respectively connected to the corresponding positions. Between the drum shell (4) and the node complex (13), the four joints (5) of the horizontal node composite connection assembly are respectively composed of the ends of the transverse shaft (11) and the longitudinal shaft (12) extending out of the corresponding side adjustment long hole (6) of the drum shell (4); during the erection of the scaffolding main node, the ends of the transverse shaft (11) extending out of the corresponding adjustment long hole (6) are respectively detachably inserted into the inner holes of the corresponding transverse horizontal rods (2), and the ends of the longitudinal shaft (12) extending out of the corresponding adjustment long hole (6) are respectively detachably inserted into the inner holes of the corresponding longitudinal horizontal rods (3).

4. The rotary connection structure for erecting a scaffolding main node according to claim 3 is characterized in that: The horizontal node composite connection assembly also includes a horizontal quick-release connection component group consisting of four horizontal shaft clamps (16) and four latches (9), and latch holes (10) are also respectively provided on the four joints (5) of the horizontal node composite connection assembly and the corresponding transverse horizontal rods (2) and the corresponding longitudinal horizontal rods (3); during the erection of the scaffolding main node, the lengths of the transverse shaft (11) and the longitudinal shaft (12) inserted into the corresponding transverse horizontal rods (2) and the corresponding longitudinal horizontal rods (3) are respectively limited by the respective horizontal shaft clamps (16), and are detachably connected as a whole under the cooperation of the respective latches (9) and the corresponding latch holes (10).

5. The rotary connection structure for erecting a scaffolding main node according to claim 4, characterized in that: The transverse axis (11) and the longitudinal axis (12) are an integral structure with the node complex (13).

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