Connection structure of steel structure columns and steel structure beams

By adopting the sliding and rotation mechanism of components such as connecting barrels and contact plates in steel structure connections, the problem of inability to adjust and poor adaptability in the prior art is solved, the flexibility and convenience of steel structure connections are realized, and the construction efficiency is improved and convenience of use.

CN118390660BInactive Publication Date: 2024-12-06CHINA RAILWAY CONSTR ENG GRP QINGDAO ENGINEERI
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Patent Information

Application Number
CN202410655735.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-24
Publication Date
2024-12-06
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing steel structure connection method cannot be adjusted due to preset installation holes, which affects convenience and adaptability. The fixed structure is relatively stiff and it is difficult to make flexible adjustments during use.

Method used

The connecting mechanism is adopted that includes components such as connecting barrels, contact plates, resistance springs, articulation frames, sector-shaped tooth plates, adjustment gears and locking rods. Through sliding, rotation and plugging mechanisms, the connecting barrels and steel columns can be flexibly connected and adjusted. Use spring and gear mechanisms to achieve rapid fixing and resetting to ensure stability and convenience of connections.

Benefits of technology

It realizes the flexibility and convenience of steel structure connection, allows position adjustment and fixing during installation, and improves the construction efficiency and convenience of steel structures.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to the technical field of steel structures. The present invention discloses a connection structure of a steel structure column and a steel structure beam. The problem to be solved by the present invention is that when connecting a steel structure, the connection is generally fixed by bolts, and the steel structure cannot be adjusted during installation due to the pre-set installation holes, and the adaptability adjustment during the use of the steel structure is poor, which affects the convenience of the steel structure during use and installation. The present invention can pre-fix the steel plate and the connecting tube by connecting the connecting tube and the connecting piece, which is convenient for the subsequent installation of the steel plate, the connecting tube and the steel beam, and can adjust the installation position, which is convenient for the connection convenience of the steel structure.
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Description

Technical Field

[0001] The invention relates to the field of steel structures, in particular to a connection structure of a steel structure column and a steel structure beam. Background Art

[0002] Structural parts are various components that can constitute the entity of building installation projects after hoisting, assembly and installation during the construction process of building installation projects. In some engineering construction, we often use metal structural parts, among which steel structure is one of the main types of building structures.

[0003] The existing patent (Announcement No.: CN117051990B) discloses a connection structure of steel structure beams and columns and a steel structure, including a beam-column body, a sleeve, an I-beam connector and a nut, etc. A sleeve is fixedly installed on the beam-column body, and an I-beam connector that can be plugged in is arranged next to the sleeve. Nuts are symmetrically fixedly installed in the beam-column body, and the sleeve is connected to the two nuts. The present invention fixes the I-beam connector by connecting the nut to the threaded rod, and pushes the push block through the rigid gasket when the threaded rod is screwed, so that the wedge-shaped push block drives the limit block in the direction away from each other and inserts into the corresponding limit groove, thereby additionally reinforcing the I-beam connector and the sleeve, thereby preventing the I-beam connector from loosening, thereby reducing the labor of workers with a simple structure and improving the efficiency of building steel structure beams and columns. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: when connecting steel structures, the connection points are generally fixed by bolts, and the pre-set mounting holes make it impossible to adjust the steel structure during installation, and thus the adaptability and adjustment of the steel structure during use is poor, affecting the convenience of the steel structure during use and installation. Summary of the invention

[0004] The purpose of the present invention is to provide a connection structure of a steel structure column and a steel structure beam to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a connection structure of a steel structure column and a steel structure beam, comprising a steel column, a connection tube is connected to the outer wall of the steel column, a connection mechanism is inserted into the end of the connection tube away from the steel column, a cavity is provided in the connection tube, a contact plate is slidably provided in the cavity in the connection tube, a resistance spring is connected between the contact plate and the cavity in the connection tube, an articulated frame is hingedly provided on the top surface of the contact plate, a sector-shaped tooth plate is also rotatably provided in the cavity, a connection frame is hingedly provided on the end surface of the sector-shaped tooth plate, and the articulated frame and the connection frame are hingedly matched.

[0005] Preferably, fixing bolts arranged opposite to each other in pairs are further provided on the outer wall of the connecting tube, and threaded holes corresponding to the four groups of fixing bolts on the connecting tube are provided on the steel column.

[0006] Preferably, baffles are fixedly provided on the outer walls on both sides of the contact plate, and two groups of snap-fitting blocks are slidably provided on the outer wall of the connecting tube, and pressure springs are provided between the two groups of snap-fitting blocks and the outer wall of the contact plate, and one end of the snap-fitting block extending toward the cavity is provided with an inclined end and a flat end, and one end of the snap-fitting block located outside the connecting tube is provided with a wedge-shaped groove, and the baffles on both sides of the contact plate are in contact with the snap-fitting blocks.

[0007] Preferably, an adjusting gear is rotatably arranged in the cavity in the connecting cylinder, and rotating sleeves are respectively arranged on both sides of the adjusting gear in the cavity for relative rotation, and both groups of rotating sleeves are provided with teeth meshing with the adjusting gear, and an oblique groove is provided on the rotating sleeve, and a locking rod is slidably arranged in the rotating sleeve, and the locking rod is slidably matched with the top of the connecting cylinder, and a limiting rod is provided on the locking rod for contacting with the oblique groove on the rotating sleeve.

[0008] Preferably, the connecting mechanism includes a steel plate plugged into the connecting tube, the outer wall of the steel plate is provided with sliding grooves arranged opposite to each other, and an adjusting rod is slidably arranged in two groups of sliding grooves on the steel plate, one end of the adjusting rod is connected to the outer wall of the steel plate by a bolt, and the other end of the adjusting rod is provided with a wedge frame, and the wedge frame is in contact with the wedge groove on the clamping block.

[0009] Preferably, the surface of the steel plate is further provided with a groove, in which relatively arranged docking holes are arranged at equal intervals, the spacing between the two groups of locking rods is the same as the spacing between the relatively arranged docking holes, and the locking rods are plug-fitted into the docking holes.

[0010] Preferably, a plug rod is provided on the side of the steel plate facing the steel column, and openings corresponding to the plug rod are provided on the connecting tube and the steel column. The plug rod is plugged into the opening, and a nut is provided on the plug rod for fixing the steel plate, the connecting tube and the steel column.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In the present invention, when it is necessary to connect the steel structure, before the connecting tube contacts the outer wall of the steel column, the resistance spring arranged in the cavity will make the initial position of the contact plate extend toward the outside of the connecting tube. The operator first slides the contact plate in the cavity. When the contact plate slides, the baffle plate arranged on the outer wall of the contact plate will contact the clamping abutment block on the outer wall of the connecting tube. After the baffle plate contacts the inclined end of the clamping abutment block, the clamping abutment block will shrink until the baffle plate is located at the flat end of the other end of the clamping abutment block. The clamping abutment block will fix the baffle plate in a limited position, so that the contact plate is in a clamped and pressure-receiving state in the cavity. After that, the connecting part of the connecting tube and the steel column is docked, so that the four groups of fixing bolts on the outer wall of the connecting tube are docked and connected with the four groups of threaded holes on the steel column, and the connecting tube is fixed to the outer wall of the steel column to perform the preliminary connection of the connecting tube, thereby realizing the installation operation of the connecting tube.

[0013] In the present invention, when the contact plate slides in the cavity, the contact plate will pull the articulated frame to move, and the movement of the articulated frame will drive the connecting frame to move, so that the sector-shaped toothed plate will deflect. When the sector-shaped toothed plate deflects, it will synchronously drive the two sets of adjusting gears to rotate. The rotation of the adjusting gears can drive the rotating sleeve to rotate. The inclined groove provided on the rotating sleeve will drive the locking rod to move downward, and then the steel plate will be moved toward the direction of the connecting tube to dock with the connecting tube. The wedge-shaped frame at one end of the adjusting rod on the steel plate will be inserted into the wedge-shaped groove on the clamping block. At this time, the engaging block will move toward the outside of the cavity under the drive of the wedge frame, thereby releasing the contact plate engaged at the engaging block. At this time, the contact plate will quickly reset under the drive of the resistance spring, and pull the articulated frame and the connecting frame while resetting, so that the fan-shaped tooth plate can drive the two sets of rotating sleeves to rotate. After the rotating sleeve drives the locking rod to move upward, the locking rod will dock with the docking hole on the steel plate, thereby docking and pre-fixing the steel plate and the connecting tube, which is convenient for the subsequent installation of the steel plate, the connecting tube and the steel column.

[0014] In the present invention, the adjusting rods arranged on both sides of the steel plate can slide in the slide groove to adjust the position of the adjusting rod. After the position of the adjusting rod is adjusted, the position of the wedge frame on the adjusting rod can be adjusted, so that the steel plate and the connecting tube can be moved to different positions to contact the card-jointed abutment block when being plugged in. At the same time, the docking holes arranged on the steel plate correspond to the locking rods, and through this arrangement, the position of the steel plate, the connecting tube and the steel column can be conveniently adjusted when being installed.

[0015] In the present invention, after the steel plate, the connecting tube and the steel column are butt-jointed, the insertion rod arranged on the steel plate will be inserted into the openings in the connecting tube and the steel column, and then the three will be butt-jointed and installed, and then the three will be fixed by nuts to realize the connection and installation of the steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a partial three-dimensional structure expansion diagram of the present invention;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the connecting tube of the present invention;

[0019] Figure 4 The sectional view of the local three-dimensional structure of the connecting tube of the present invention Figure 1 ;

[0020] Figure 5 The sectional view of the local three-dimensional structure of the connecting tube of the present invention Figure 2 ;

[0021] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0022] Figure 7 It is a partial three-dimensional structural cross-sectional view of the present invention.

[0023] In the figure: 1. steel column; 2. connecting cylinder; 21. cavity; 22. contact plate; 23. resistance spring; 24. hinged frame; 25. fan-shaped tooth plate; 26. connecting frame; 27. baffle; 28. clamping block; 29. ​​wedge groove; 201. pressure spring; 202. adjusting gear; 203. rotating sleeve; 204. inclined groove; 205. locking rod; 206. limiting rod; 3. connecting mechanism; 31. steel plate; 32. slide groove; 33. adjusting rod; 34. bolt; 35. wedge frame; 36. groove; 37. docking hole; 38. fixing bolt; 39. plug rod; 301. nut. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 7The present invention provides a technical solution: a connection structure of a steel structure column and a steel structure beam, comprising a steel column 1, a connection tube 2 is connected to the outer wall of the steel column 1, a connection mechanism 3 is inserted and arranged at one end of the connection tube 2 away from the steel column 1, a cavity 21 is provided in the connection tube 2, a contact plate 22 is slidably arranged in the cavity 21 in the connection tube 2, a resistance spring 23 is connected between the contact plate 22 and the cavity 21 in the connection tube 2, an articulated frame 24 is hingedly arranged on the top surface of the contact plate 22, a sector-shaped tooth plate 25 is also rotatably arranged in the cavity 21, a connection frame 26 is hingedly arranged on the end surface of the sector-shaped tooth plate 25, and the articulated frame 24 and the connection frame 26 are hingedly matched;

[0026] The outer wall of the connecting tube 2 is also provided with fixing bolts 38 arranged opposite to each other in pairs, and the steel column 1 is provided with threaded holes corresponding to the four groups of fixing bolts 38 on the connecting tube 2;

[0027] Baffles 27 are fixedly provided on both sides of the outer wall of the contact plate 22, and two groups of clamping blocks 28 are slidably provided on the outer wall of the connecting tube 2. A pressure spring 201 is provided between the two groups of clamping blocks 28 and the outer wall of the contact plate 22. The end of the clamping block 28 extending toward the cavity 21 is provided with an inclined end and a flat end. The end of the clamping block 28 located outside the connecting tube 2 is provided with a wedge-shaped groove 29. The baffles 27 on both sides of the contact plate 22 are in contact with the clamping blocks 28.

[0028] When the steel structure needs to be connected, before the connecting tube 2 contacts the outer wall of the steel column 1, the resistance spring 23 arranged in the cavity 21 will make the initial position of the contact plate 22 extend toward the outside of the connecting tube 2. The operator first slides the contact plate 22 in the cavity 21. When the contact plate 22 slides, the baffle 27 arranged on the outer wall of the contact plate 22 will contact the clamping abutment 28 on the outer wall of the connecting tube 2. After the baffle 27 contacts the inclined end of the clamping abutment 28, the clamping abutment 28 will shrink until the baffle 27 is located at the flat end of the other end of the clamping abutment 28. The clamping abutment 28 will fix the baffle 27 in a limited position, so that the contact plate 22 is in a clamped and pressure-receiving state in the cavity 21. Then, the connecting tube 2 is docked with the connecting part of the steel column 1, so that the four groups of fixing bolts 38 on the outer wall of the connecting tube 2 are docked and connected with the four groups of threaded holes on the steel column 1, and the connecting tube 2 is fixed to the outer wall of the steel column 1 to perform the preliminary connection of the connecting tube 2 and realize the installation operation of the connecting tube 2.

[0029] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, an adjusting gear 202 is rotatably arranged in the cavity 21 in the connecting cylinder 2, and rotating sleeves 203 are respectively rotatably arranged on both sides of the adjusting gear 202 in the cavity 21, and teeth meshing with the adjusting gear 202 are arranged on both sets of rotating sleeves 203, and an inclined groove 204 is provided on the rotating sleeve 203, and a locking rod 205 is slidably arranged in the rotating sleeve 203, and the locking rod 205 is slidably matched with the top of the connecting cylinder 2, and a limiting rod 206 contacting with the inclined groove 204 on the rotating sleeve 203 is arranged on the locking rod 205;

[0030] The connecting mechanism 3 includes a steel plate 31 inserted on the connecting tube 2, and the outer wall of the steel plate 31 is provided with slide grooves 32 arranged opposite to each other, and an adjusting rod 33 is slidably arranged in two groups of slide grooves 32 on the steel plate 31, and one end of the adjusting rod 33 is connected to the outer wall of the steel plate 31 by a bolt 34, and the other end of the adjusting rod 33 is provided with a wedge frame 35, and the wedge frame 35 contacts the wedge groove 29 on the clamping abutment block 28;

[0031] The surface of the steel plate 31 is also provided with a groove 36, and the groove 36 is provided with oppositely arranged docking holes 37 arranged at a medium interval. The spacing between the two sets of locking rods 205 is the same as the spacing between the oppositely arranged docking holes 37, and the locking rods 205 are plugged into and matched with the docking holes 37;

[0032] When the contact plate 22 slides in the cavity 21, the contact plate 22 will pull the hinge frame 24 to move, and the movement of the hinge frame 24 drives the connecting frame 26 to move, so that the sector tooth plate 25 deflects. When the sector tooth plate 25 deflects, it will synchronously drive the two sets of adjusting gears 202 to rotate. The rotation of the adjusting gear 202 can drive the rotating sleeve 203 to rotate. The inclined groove 204 set on the rotating sleeve 203 will drive the locking rod 205 to move downward, and then the steel plate 31 will be moved toward the direction of the connecting tube 2 to dock with the connecting tube 2. The wedge frame 35 at one end of the adjusting rod 33 on the steel plate 31 will be inserted into the wedge groove 29 on the clamping block 28. At this time, the engaging block 28 will move toward the outside of the cavity 21 under the drive of the wedge-shaped frame 35, thereby releasing the contact plate 22 engaged at the engaging block 28. At this time, the contact plate 22 will quickly reset under the drive of the resistance spring 23, and pull the hinge frame 24 and the connecting frame 26 while resetting, so that the fan-shaped toothed plate 25 can drive the two sets of rotating sleeves 203 to rotate. After the rotating sleeve 203 drives the locking rod 205 to move upward, the locking rod 205 will dock with the docking hole 37 on the steel plate 31, so that the steel plate 31 and the connecting tube 2 are docked and pre-fixed, which is convenient for the subsequent installation of the steel plate 31, the connecting tube 2 and the steel column 1;

[0033] The adjusting rods 33 arranged on both sides of the steel plate 31 can slide in the slide groove 32 to adjust the position of the adjusting rod 33. After the position of the adjusting rod 33 is adjusted, the position of the wedge frame 35 on the adjusting rod 33 can be adjusted, so that the steel plate 31 can be moved to different positions and contact the card-jointed abutment block 28 when being plugged in with the connecting tube 2. At the same time, the docking holes 37 arranged on the steel plate 31 correspond to the locking rod 205, and through this arrangement, the position of the steel plate 31 can be conveniently adjusted when being installed with the connecting tube 2 and the steel column 1.

[0034] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, a plug rod 39 is also arranged on the side of the steel plate 31 facing the steel column 1, and openings corresponding to the plug rod 39 are arranged on the connecting tube 2 and the steel column 1. The plug rod 39 is plugged into the opening, and a nut 301 is arranged on the plug rod 39 for fixing the steel plate 31, the connecting tube 2 and the steel column 1; when the steel plate 31, the connecting tube 2 and the steel column 1 are docked, the plug rod 39 arranged on the steel plate 31 will be inserted into the openings in the connecting tube 2 and the steel column 1, and then the three will be docked and installed, and then the three will be fixed by the nut 301 to realize the connection and installation of the steel structure.

[0035] The use method and advantages of the present invention: The use method of the connection structure of the steel structure column and the steel structure beam, the working process is as follows:

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown:

[0037] When the steel structure needs to be connected, before the connecting tube 2 contacts the outer wall of the steel column 1, the resistance spring 23 provided in the cavity 21 will make the initial position of the contact plate 22 extend toward the outside of the connecting tube 2. The operator first slides the contact plate 22 in the cavity 21. When the contact plate 22 slides, the baffle 27 provided on the outer wall of the contact plate 22 will contact the clamping abutment 28 on the outer wall of the connecting tube 2. After the baffle 27 contacts the inclined end of the clamping abutment 28, the clamping abutment 28 will shrink until the baffle 27 is located at the flat end of the other end of the clamping abutment 28. The clamping abutment 28 will fix the baffle 27 in a limited position, so that the contact plate 22 is in a clamped and pressure-receiving state in the cavity 21. Then, the connecting tube 2 is docked with the connecting part of the steel column 1, so that the four groups of fixing bolts 38 on the outer wall of the connecting tube 2 are docked and connected with the four groups of threaded holes on the steel column 1, and the connecting tube 2 is fixed to the outer wall of the steel column 1 to perform the preliminary connection of the connecting tube 2, thereby realizing the installation operation of the connecting tube 2.

[0038] When the contact plate 22 slides in the cavity 21, the contact plate 22 will pull the hinge frame 24 to move, and the movement of the hinge frame 24 drives the connecting frame 26 to move, so that the sector tooth plate 25 deflects. When the sector tooth plate 25 deflects, it will synchronously drive the two sets of adjusting gears 202 to rotate. The rotation of the adjusting gear 202 can drive the rotating sleeve 203 to rotate. The inclined groove 204 set on the rotating sleeve 203 will drive the locking rod 205 to move downward, and then the steel plate 31 will be moved toward the direction of the connecting tube 2 to dock with the connecting tube 2. The wedge frame 35 at one end of the adjusting rod 33 on the steel plate 31 will be inserted into the wedge groove 29 on the clamping block 28. At this time, the engaging block 28 will move toward the outside of the cavity 21 under the drive of the wedge-shaped frame 35, thereby releasing the contact plate 22 engaged at the engaging block 28. At this time, the contact plate 22 will quickly reset under the drive of the resistance spring 23, and pull the hinge frame 24 and the connecting frame 26 while resetting, so that the fan-shaped toothed plate 25 can drive the two sets of rotating sleeves 203 to rotate. After the rotating sleeve 203 drives the locking rod 205 to move upward, the locking rod 205 will dock with the docking hole 37 on the steel plate 31, so that the steel plate 31 and the connecting tube 2 are docked and pre-fixed, which is convenient for the subsequent installation of the steel plate 31, the connecting tube 2 and the steel column 1;

[0039] The adjusting rods 33 arranged on both sides of the steel plate 31 can slide in the slide grooves 32 to adjust the positions of the adjusting rods 33. After the positions of the adjusting rods 33 are adjusted, the positions of the wedge-shaped frames 35 on the adjusting rods 33 can be adjusted, so that the steel plate 31 can be moved to different positions to contact the clamping abutment block 28 when plugging and connecting with the connecting tube 2. At the same time, the docking holes 37 arranged on the steel plate 31 correspond to the locking rods 205, and this arrangement can facilitate the position adjustment of the steel plate 31, the connecting tube 2 and the steel column 1 when they are installed.

[0040] After the steel plate 31, the connecting tube 2 and the steel column 1 are butt-jointed, the insert rod 39 provided on the steel plate 31 will be inserted into the openings in the connecting tube 2 and the steel column 1, and then the three will be butt-jointed and installed, and then the three will be fixed by the nut 301 to realize the connection and installation of the steel structure.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A connection structure of a steel structure column and a steel structure beam, characterized in that: The invention comprises a steel column (1), wherein a connecting tube (2) is connected to the outer wall of the steel column (1), a connecting mechanism (3) is inserted and arranged at one end of the connecting tube (2) away from the steel column (1), a cavity (21) is provided in the connecting tube (2), a contact plate (22) is slidably arranged in the cavity (21) in the connecting tube (2), a resisting spring (23) is connected between the contact plate (22) and the cavity (21) in the connecting tube (2), an articulated frame (24) is hingedly arranged on the top surface of the contact plate (22), a sector-shaped tooth plate (25) is rotatably arranged in the cavity (21), a connecting frame (26) is hingedly arranged on the end surface of the sector-shaped tooth plate (25), and the articulated frame (24) and the connecting frame (26) are hingedly matched; Baffles (27) are fixedly provided on both sides of the outer wall of the contact plate (22); two groups of clamping blocks (28) are slidably provided on the outer wall of the connecting tube (2); pressure springs (201) are provided between the two groups of clamping blocks (28) and the outer wall of the contact plate (22); an end of the clamping block (28) extending toward the cavity (21) is provided with an inclined end and a flat end; an end of the clamping block (28) located outside the connecting tube (2) is provided with a wedge-shaped groove (29); and the baffles (27) on both sides of the contact plate (22) are in contact with the clamping blocks (28); An adjusting gear (202) is also rotatably arranged in the cavity (21) in the connecting cylinder (2), and rotating sleeves (203) are respectively rotatably arranged on both sides of the adjusting gear (202) in the cavity (21), and teeth meshing with the adjusting gear (202) are arranged on both sets of rotating sleeves (203), and an inclined groove (204) is provided on the rotating sleeve (203), and a locking rod (205) is slidably arranged in the rotating sleeve (203), and the locking rod (205) is slidably matched with the top of the connecting cylinder (2), and a limiting rod (206) is provided on the locking rod (205) and contacts the inclined groove (204) on the rotating sleeve (203); The connecting mechanism (3) comprises a steel plate (31) plugged into the connecting tube (2), the outer wall of the steel plate (31) is provided with sliding grooves (32) arranged opposite to each other, an adjusting rod (33) is slidably arranged in two sets of sliding grooves (32) on the steel plate (31), one end of the adjusting rod (33) is connected to the outer wall of the steel plate (31) by a bolt (34), and the other end of the adjusting rod (33) is provided with a wedge-shaped frame (35), and the wedge-shaped frame (35) contacts the wedge-shaped groove (29) on the clamping abutment block (28); The surface of the steel plate (31) is further provided with a groove (36), and the groove (36) is provided with oppositely arranged docking holes (37) arranged at a medium interval, the spacing between the two groups of locking rods (205) is the same as the spacing between the oppositely arranged docking holes (37), and the locking rods (205) are plug-fitted into the docking holes (37); The outer wall of the connecting tube (2) is also provided with fixing bolts (38) arranged opposite to each other in pairs, and the steel column (1) is provided with threaded holes corresponding to the four groups of fixing bolts (38) on the connecting tube (2); A plug rod (39) is also arranged on the side of the steel plate (31) facing the steel column (1), and openings corresponding to the plug rod (39) are arranged on the connecting tube (2) and the steel column (1). The plug rod (39) is plugged into the opening, and a nut (301) is arranged on the plug rod (39) for fixing the steel plate (31), the connecting tube (2) and the steel column (1).