An easily assembled building steel structure

Abstract

The present invention relates to the technical field of building steel structures, and specifically relates to a building steel structure convenient for assembly, including a first steel frame, and a first sleeve is slidably sleeved on the outer wall of the first steel frame. For this building steel structure convenient for assembly, by rotating the bolt again, the first moving frame and the second moving frame are further close to each other. At this time, the first moving frame and the second moving frame will drive the corresponding contact plates to approach the four sides of the second steel frame again. As the contact plates continue to move, the lower ends of the contact plates are urged to contact the fourth balls and the fourth guide rods, causing the contact plates to rotate under force. The rotation and inclination of the contact plates cause the ends of the contact plates to clamp the outer wall of the second steel frame. The clamping of the four sides causes the second steel frame to be aligned in a straight line with the end of the first steel frame below. At this time, the crane can lower the second steel frame to complete the precise docking.

Description

Technical Field

[0001] The present invention relates to the technical field of building steel structures, and particularly to a building steel structure convenient for assembly. Background Technique

[0002] During the construction of some factory buildings, the assembly and welding operations of steel structures are required for building steel structures. Among the current mainstream steel structure assembly methods, usually after aligning the ends of two steel structure members, the connecting ear plates pre-welded on the upper and lower two steel structure members are then aligned. After aligning the ear plates, bolts and nuts are used to screw and connect the ear plates on the two steel structure members. Subsequently, the butt joint seams of the upper and lower two steel structure members are welded. After welding, the ear plate positions are cut off, and then the cutting marks are polished, and the steel structure docking is completed.

[0003] For the existing steel structure docking methods on the market, since steel structure members are usually large in volume and huge in weight, it is difficult to lift them manually. Usually, a crane is used for hoisting to perform vertical docking of two steel structures. The crane controls the rough position movement of the steel structure, and then the hoisted steel structure is manually supported to be docked at the end of the steel structure that needs to be docked. Manual docking requires repeated adjustments, and the docking accuracy is poor, time-consuming and laborious, which does not meet the actual assembly requirements. Summary of the Invention

[0004] The present invention provides a building steel structure convenient for assembly, which has the beneficial effects of being able to quickly assemble and dock steel structures and can limit the movement range of the suspended steel structure, and solves the problems mentioned in the above background technique that at the end of the steel structure that needs to be docked, manual docking requires repeated adjustments, and the docking accuracy is poor, time-consuming and laborious, which does not meet the actual assembly requirements. To achieve the above object, the present invention provides the following technical solution: A building steel structure convenient for assembly, including a first steel frame, a first sleeve is slidably sleeved on the outer wall of the first steel frame, a second sleeve is slidably arranged on the outer wall of the first sleeve, and a first inclined block is fixed on the outer wall of the second sleeve;

[0005] A first moving frame and a second moving frame are slidably sleeved on the outer wall of the first sleeve. A third guide rod is slidably arranged inside the first moving frame. The inner wall of the second moving frame is fixed to the outer wall of the third guide rod. A third return spring is sleeved on the third guide rod. One end of the third return spring is fixed to the outer wall of the first moving frame, and one end of the third return spring is fixed to the outer wall of the second moving frame;

[0006] Fixed columns are fixed on the outer walls of the first moving frame and the second moving frame, and a plurality of abutting plates for restricting the movement track of the second steel frame are arranged on the outer wall of the fixed column.

[0007] As an alternative solution for an easily assembled building steel structure according to the present invention, wherein: a first guide rod is provided on the outer wall of the first sleeve, a sliding plate is slidably provided on the first guide rod, a bolt is inserted on the sliding plate, a first rotating disk is installed on the side of the bolt close to the first sleeve, a second rotating disk is rotatably provided on the outer wall of the first rotating disk, a rotating frame is sleeved on the outer wall of the second rotating disk, and a first return spring is fixed between the inner wall of the rotating frame and one side of the second rotating disk.

[0008] As an alternative solution for an easily assembled building steel structure according to the present invention, wherein: first balls are provided on the outer wall of the first rotating disk, threaded grooves for guiding the moving direction of the first balls are formed in the inner wall of the rotating frame, and the first balls slide in the threaded grooves.

[0009] As an alternative solution for an easily assembled building steel structure according to the present invention, wherein: a second guide rod is fixed on the outer wall of the first sleeve, a second return spring is fixed between the outer wall of the rotating frame and the outer wall of the first sleeve, the second return spring is sleeved on the outer wall of the second guide rod, a through groove is formed in the outer wall of the first sleeve, and the rotating frame slides in the through groove;

[0010] A silicone rubber friction convex block for fixing the position of the first sleeve is fixed at the end of the rotating frame.

[0011] As an alternative solution for an easily assembled building steel structure according to the present invention, wherein: a second inclined block is fixed on the outer wall of the sliding plate, a first guide rod is fixed on the outer wall of the second sleeve, a second ball is installed at the end of the first guide rod, and the second ball abuts against the inclined surface of the second inclined block.

[0012] As an alternative solution for an easily assembled building steel structure according to the present invention, wherein: second guide rods are fixed on the outer walls of the first moving frame and the second moving frame, a third ball is installed at the end of each second guide rod, and the third balls abut against the inclined surfaces of the first inclined blocks.

[0013] As an alternative solution for an easily assembled building steel structure according to the present invention, wherein: there are two fixing columns, a rotating shaft is rotatably provided on the outer walls of the two fixing columns, the outer wall of the rotating shaft is fixed to the outer wall of the abutting plate, a torsion spring is sleeved on the outer wall of the rotating shaft, one end of the torsion spring is fixed to the outer wall of the fixing column, and the other end of the torsion spring is fixed to the outer wall of the abutting plate.

[0014] As an alternative solution for an easily assembled building steel structure according to the present invention, wherein: two third guide rods are fixed on the outer wall of the first sleeve, and the first moving frame and the second moving frame are respectively in sliding fit with the two third guide rods.

[0015] As an alternative embodiment of the building steel structure that is convenient for assembly according to the present invention, wherein: a retaining piece for restricting the position of the sliding plate is fixed to the outer wall of the bolt.

[0016] As an alternative embodiment of the building steel structure that is convenient for assembly according to the present invention, wherein: a roller is rotatably provided on the outer wall of the abutting plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] In the present invention, by initially rotating the bolt, the rotating frames on both sides can drive the corresponding silicone rubber friction bumps to tightly press against the outer wall of the first steel frame, which can cause the first sleeve to stop at any height outside the first steel frame. Such a setting enables the rotating frame and its surrounding mechanisms to accurately position at any position on the outer wall of different first steel frames according to different situations, making the applicable range wider. By reversely screwing the bolt, the position fixation of the first sleeve can be released for quick removal. Such a setting allows it to be used in more steel structure butt joints for repeated utilization.

[0019] In the present invention, by continuously rotating the bolt, not only can the silicone rubber friction bumps press against the surface of the first steel frame with a greater pressing force to improve the fixing stability of the position of the first sleeve, but also it will cause the second sleeve to move upward. The upward movement of the second sleeve will cause the first moving frame and the second moving frame to approach each other. The approach of the first moving frame and the second moving frame will drive the multiple abutting plates on their outer walls to approach the four sides of the second steel frame, further restricting the movement range and swaying range of the second steel frame during hoisting. Moreover, the approach of the first moving frame and the second moving frame will abut against the second steel frame, aligning the second steel frame with the first steel frame more precisely vertically, making it easier to accurately dock, enabling it to be more accurately docked with the end of the first steel frame. Therefore, it can be seen that by continuously rotating the bolt, on the one hand, the position of the first sleeve can be further restricted and tightened, and on the other hand, the second steel frame and the first steel frame can be further aligned in a straight line, making the docking easier and more accurate.

[0020] In the present invention, by rotating the bolt again, the first moving frame and the second moving frame are further brought closer to each other. At this time, the first moving frame and the second moving frame will drive the corresponding contact plates to approach the four sides of the second steel frame again. As the contact plates continue to move, the lower ends of the contact plates will contact the fourth ball and the fourth guide rod, causing the contact plates to rotate under force. The rotation of the contact plates causes the rollers at their ends to tilt, so that the ends of the contact plates clamp the outer wall of the second steel frame. The clamping of the four sides aligns the second steel frame with the end of the first steel frame below in a straight line. At this time, the crane can lower the second steel frame to complete the precise docking. And in the whole process, only the bolt needs to be screwed, without too much manual adjustment. It can be seen that by rotating the bolt to different degrees, the limiting effect, as well as the clamping of the second steel frame and the effect of calibrating the position, can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0022] Figure 2 For the present invention Figure 1 The enlarged structural schematic diagram at A in it.

[0023] Figure 3 It is a schematic diagram of the contact plate structure of the present invention.

[0024] Figure 4 It is a schematic diagram of the enlarged partial structure of the present invention.

[0025] Figure 5 It is a schematic diagram of the top view sectional structure of the present invention.

[0026] Figure 6 It is a schematic diagram of the further top view sectional structure of the present invention.

[0027] Figure 7 For the present invention Figure 6 The enlarged partial structural schematic diagram in it.

[0028] Figure 8 For the present invention Figure 7 The enlarged structural schematic diagram at B in it.

[0029] Reference numerals: 1, second steel frame; 2, first steel frame; 3, first sleeve; 301, through groove; 4, first guide rod; 5, sliding plate; 6, second inclined block; 8, bolt; 801, retaining piece; 9, first rotating disc; 10, first ball; 11, rotating frame; 12, threaded groove; 13, second rotating disc; 14, first return spring; 15, second guide rod; 16, second return spring; 17, silicone rubber friction bump; 18, second sleeve; 19, first guide rod; 20, second ball; 21, first inclined block; 23, third ball; 24, second guide rod; 25, first moving frame; 26, second moving frame; 27, third guide rod; 28, third return spring; 29, fixed column; 30, rotating shaft; 31, torsion spring; 32, abutting plate; 33, roller; 34, fourth guide rod; 35, fourth ball; 36, third guide rod. Detailed implementation mode

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1. The purpose of this embodiment is to facilitate the solution of the problem that the crane can only control the rough position movement of the steel structure, and then manually support the hoisted steel structure to dock it at the end of the steel structure that needs to be docked. Manual docking requires repeated adjustments, has poor docking accuracy, is time-consuming and laborious, and does not meet the actual assembly requirements. Please refer to Figures 1-8 A building steel structure convenient for assembly, including a first steel frame 2. A first sleeve 3 is slidably sleeved on the outer wall of the first steel frame 2. A second sleeve 18 is slidably arranged on the outer wall of the first sleeve 3. A first inclined block 21 is fixed on the outer wall of the second sleeve 18, and the outer wall of the first inclined block 21 is set as an inclined surface;

[0032] A first moving frame 25 and a second moving frame 26 are slidably sleeved on the outer wall of the first sleeve 3. A third guide rod 27 is slidably arranged on the inner wall of the first moving frame 25. The inner wall of the second moving frame 26 is fixed to the outer wall of the third guide rod 27. A third return spring 28 is sleeved on the third guide rod 27. One end of the third return spring 28 is fixed to the outer wall of the first moving frame 25, and one end of the third return spring 28 is fixed to the outer wall of the second moving frame 26. The setting of the third return spring 28 facilitates subsequent resetting;

[0033] Fixed columns 29 are fixed to the outer walls of the first moving frame 25 and the second moving frame 26. A plurality of abutting plates 32 for restricting the movement track of the second steel frame 1 are arranged on the outer wall of the fixed column 29. The abutting plates 32 are used to restrict and clamp the second steel frame 1 so that it gradually aligns with the upper and lower positions of the first steel frame 2;

[0034] A first guide rod 4 is arranged on the outer wall of the first sleeve 3. A sliding plate 5 is slidably arranged on the first guide rod 4. A bolt 8 is inserted on the sliding plate 5. A first rotating disk 9 is installed on the side of the bolt 8 close to the first sleeve 3. A second rotating disk 13 is rotatably arranged on the outer wall of the first rotating disk 9. A rotating frame 11 is sleeved on the outer wall of the second rotating disk 13. A first return spring 14 is fixed between the inner wall of the rotating frame 11 and one side of the second rotating disk 13. During the process of screwing the bolt 8, the bolt 8 drives the first rotating disk 9 at its end to rotate synchronously. While the first rotating disk 9 rotates, the first ball 10 on its outer wall starts to move along the track of the thread groove 12. During the moving process, the first rotating disk 9 is continuously driven to move deeper into the inner wall of the rotating frame 11. And during the moving process of the first rotating disk 9, the second rotating disk 13 is driven to move synchronously. During the moving process of the second rotating disk 13, the first return spring 14 will be pressed. When the first return spring 14 is pressed, the pressing force will be conducted to the rotating frame 11 along the first return spring 14. As the rotating frame 11 is applied with the pressing force, the rotating frame 11 will first press the second return spring 16 to compress it. As the second return spring 16 is compressed, the rotating frame 11 will move into the through groove 301 along the guidance of the second guide rod 15;

[0035] A first ball 10 is arranged on the outer wall of the first rotating disk 9. The first ball 10 is rotatably arranged on the outer wall of the first rotating disk 9. A thread groove 12 for guiding the moving direction of the first ball 10 is opened on the inner wall of the rotating frame 11. The first ball 10 slides in the thread groove 12. Such a setting can drive the first ball 10 to slide along the thread groove 12 when the bolt 8 is rotated, thereby driving the bolt 8 to move;

[0036] A second guide rod 15 is fixed to the outer wall of the first sleeve 3. A second return spring 16 is fixed between the outer wall of the rotating frame 11 and the outer wall of the first sleeve 3. The second return spring 16 is sleeved on the outer wall of the second guide rod 15. A through groove 301 is opened on the outer wall of the first sleeve 3. The rotating frame 11 slides in the through groove 301;

[0037] A silicone rubber friction convex block 17 for fixing the position of the first sleeve 3 is fixed to the end of the rotating frame 11. The elastic force of the first return spring 14 is greater than the elastic force of the second return spring 16.

[0038] In this embodiment: In order to more quickly dock and assemble the steel structure, before docking the steel structure, first put the first sleeve 3 on the outer wall of the already assembled first steel frame 2, slide it to a suitable position, and then simultaneously turn the bolts 8 on both sides to promote the movement of the rotating frame 11, so that the silicone rubber friction bumps 17 at its end pass through the through groove 301 and contact the outer wall of the first steel frame 2. The two silicone rubber friction bumps 17 on both sides press and contact simultaneously. The silicone rubber has good friction. Continuing to press causes the silicone rubber to deform and increase the friction, fixing the position of the first sleeve 3 at this height. At this time, use a crane to move the end of the second steel frame 1 to the center position of the four-sided contact plate 32 and suspend it.

[0039] The effect achieved in this embodiment can position the first sleeve 3 and its surrounding mechanisms at any height position of the first sleeve 2 to facilitate the subsequent alignment, restriction and other work to proceed smoothly.

[0040] Embodiment 2. This embodiment aims to solve the problems of how to further fix the position of the assembly and how to position the first steel frame and the second steel frame after the fixed position of the assembly in Embodiment 1. Please refer to Figures 1-8 , a building steel structure convenient for assembly. A second inclined block 6 is fixed on the outer wall of the sliding plate 5. A first guide rod 19 is fixed on the outer wall of the second sleeve 18. A second ball 20 is installed at the end of the first guide rod 19. The second ball 20 contacts the inclined surface of the second inclined block 6. As the first rotating disk 9 and the second rotating disk 13 continue to move, the first return spring 14 is further compressed. At this time, since the silicone rubber friction bump 17 has contacted the outer wall of the first steel frame 2 and cannot move further, therefore, at this time, as the first return spring 14 continues to be compressed and deformed, the pressing force of its compression also increases continuously with the compression length, that is, the pressing force on the rotating frame 11 and the silicone rubber friction bump 17 is also getting larger and larger at this time, making the friction between the silicone rubber friction bump 17 and the outer wall of the first steel frame 2 greater, and the position of the first sleeve 3 is fixed more firmly. The movement of the sliding plate 5 drives the second inclined block 6 on its outer wall to move synchronously. The lateral movement of the second inclined block 6 causes the inclined surface on its outer wall to contact the second ball 20. The contact causes the second ball 20 to slide along the inclined surface of the outer wall of the second inclined block 6, and causes the second inclined block 6 to drive the first guide rod 19 to gradually rise. When the first guide rod 19 rises, it drives the second sleeve 18 to rise synchronously;

[0041] Second guide rods 24 are fixed on the outer walls of the first moving frame 25 and the second moving frame 26. Third balls 23 are installed at the ends of the second guide rods 24. The third balls 23 contact the inclined surfaces of the first inclined block 21;

[0042] The outer wall of the bolt 8 is fixed with a baffle 801 for limiting the position of the sliding plate 5. Two baffles 801 are provided, which are respectively arranged on both sides of the sliding plate 5 to facilitate limiting the sliding of the sliding plate 5 on the bolt 8.

[0043] The outer wall of the resistance plate 32 is rotatably provided with a roller 33. Since a plurality of resistance plates 32 are provided, the resistance plates 32 in four directions simultaneously press the four sides of the outer wall of the second steel frame 1, so that the position of the second steel frame 1 is now in the same straight line as the position of the first steel frame 2. The roller 33 can further align the first steel frame 2 with the second steel frame 1. When the second steel frame 1 is hung down, the friction between the outer surface of the second steel frame 1 and the outer surface of the resistance plate 32 can be reduced, so that the second steel frame 1 can be smoothly hung down and docked with the first steel frame 2.

[0044] In this embodiment: at this time, the bolts 8 on both sides continue to rotate simultaneously. As the bolts 8 continue to enter the rotating frame 11 with the first rotating disk 9 and the second rotating disk 13, the sliding plate 5 also moves synchronously. After the second sleeve 18 rises, it also rises with the two first inclined plane blocks 21 on its outer wall. The rise of the first inclined plane block 21 causes the inclined surface of its outer wall to conflict with the third ball 23. The conflict causes the third ball 23 to move with the second guide rod 24 toward the direction of the first inclined plane block 21.

[0045] Since the two first inclined blocks 21 are axially symmetrically arranged, the second guide rods 24 on both sides are close to each other, and then the second guide rods 24 on both sides are close to each other, and the corresponding first moving frame 25 and the second moving frame 26 are close to each other under the guidance of the third guide rod 27, and are guided by the third guide rod 36 during the movement. At this time, the contact plates 32 on the four sides further limit and clamp the second steel frame 1 at the center position at the same time.

[0046] And they are compressed while approaching. When the first mobile frame 25 and the second mobile frame 26 approach each other, the first mobile frame 25 and the second mobile frame 26 will move synchronously with the corresponding contact plates 32, causing the contact plates 32 on the four sides to simultaneously approach the position of the second steel frame 1. After the outer wall of the contact plate 32 contacts the outer wall of the second steel frame 1, the suspended second steel frame 1 will be pressed from the four sides to gradually approach the center point of the first steel frame 2, and the movable range of the second steel frame 1 during the lifting process is reduced, making the subsequent docking more precise. The effect achieved by this embodiment can, on the one hand, further limit and tighten the position of the first sleeve 3, and on the other hand, further achieve the second steel frame 1 and the first steel frame 2 to be in the same straight line, making their docking easier and more precise.

[0047] Embodiment 3: This embodiment is intended to facilitate solving the problem of how to further assist in docking and aligning the first steel frame and the second steel frame after preliminary positioning in Embodiment 2.Figures 1-8 , a building steel structure that is easy to assemble, wherein two fixed columns 29 are provided, and a rotating shaft 30 is rotatably provided on the outer wall of the two fixed columns 29, and the outer wall of the rotating shaft 30 is fixed to the outer wall of the contact plate 32, and a torsion spring 31 is sleeved on the outer wall of the rotating shaft 30, and one end of the torsion spring 31 is fixed to the outer wall of the fixed column 29, and the other end of the torsion spring 31 is fixed to the outer wall of the contact plate 32, and the rotation of the contact plate 32 causes the protruding part of the end of the contact plate 32 to be pressed against the outer wall of the second steel frame 1, and the contact causes the contact plate 32 to be forced to rotate along the rotating connection of the fixed column 29 with the rotating shaft 30, and the torsion spring 31 is twisted during the rotation to store force for subsequent reset;

[0048] A plurality of fourth guide rods 34 are fixed to the outer wall of the first sleeve 3, and fourth balls 35 are rotatably arranged at the ends of the fourth guide rods 34;

[0049] Two third guide rods 36 are fixed to the outer wall of the first sleeve 3 , and the first moving frame 25 and the second moving frame 26 are slidably matched with the two third guide rods 36 respectively.

[0050] In this embodiment: at this time, as the bolt 8 is continuously turned, the first moving frame 25 and the second moving frame 26 will be closer to each other. As the first moving frame 25 and the second moving frame 26 continue to be closer, the abutment plate 32 moves accordingly and the lower half thereof abuts against the fourth ball 35.

[0051] Since a plurality of contact plates 32 are provided, the contact plates 32 in four directions simultaneously press the four sides of the outer wall of the second steel frame 1, so that the position of the second steel frame 1 is now in the same straight line as the position of the first steel frame 2, so that the docking is more accurate. At this time, it is only necessary to gradually lower the second steel frame 1 by means of a crane. When the second steel frame 1 is lowered, its outer wall will slide against the roller 33 provided with the outer wall of the contact plate 32 for rotation, thereby reducing the friction resistance when the second steel frame 1 is lowered for docking, and the accurate docking of the second steel frame 1 and the first steel frame 2 is completed. Only welding of the joints is required to complete the assembly. The whole process is simple and can be achieved one by one by screwing the bolts 8.

[0052] After the docking is completed, the bolt 8 can be screwed in the reverse direction to make it rotate in the reverse direction with the first rotating disk 9, prompting the first ball 10 to move in the reverse direction along the trajectory of the thread groove 12, so that the second rotating disk 13 moves in the reverse direction. At this time, the first return spring 14 begins to rebound, and finally the rotating frame 11 and the silicone rubber friction protrusion 17 release the pressure on the surface of the first steel frame 2, so that the first sleeve 3 can be removed, and the first sleeve 3 and a series of structures can be slid upward to remove, and the remaining steel structures that need to be docked can be repeatedly assembled and docked quickly. The whole process does not require too much manual adjustment. By rotating the bolt 8 to different degrees, the effects of restriction and positioning, as well as the clamping and calibration position of the second steel frame can be achieved.

[0053] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0054] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An easily assembled building steel structure, including a first steel frame (2), characterized in that: A first sleeve (3) is slidably sleeved on the outer wall of the first steel frame (2). A second sleeve (18) is slidably arranged on the outer wall of the first sleeve (3). A first inclined surface block (21) is fixed on the outer wall of the second sleeve (18). A first moving frame (25) and a second moving frame (26) are slidably sleeved on the outer wall of the first sleeve (3). A third guide rod (27) is slidably arranged on the inner wall of the first moving frame (25). The inner wall of the second moving frame (26) is fixed on the outer wall of the third guide rod (27). A third return spring (28) is sleeved on the third guide rod (27). One end of the third return spring (28) is fixed on the outer wall of the first moving frame (25). One end of the third return spring (28) is fixed on the outer wall of the second moving frame (26). Fixing columns (29) are fixed on the outer walls of the first moving frame (25) and the second moving frame (26). A plurality of abutting plates (32) for restricting the moving track of the second steel frame (1) are arranged on the outer wall of the fixing column (29). A first guide rod (4) is arranged on the outer wall of the first sleeve (3). A sliding plate (5) is slidably arranged on the first guide rod (4). A bolt (8) is inserted into the sliding plate (5). A first rotating disk (9) is installed on the side of the bolt (8) close to the first sleeve (3). A second rotating disk (13) is rotatably arranged on the outer wall of the first rotating disk (9). A rotating frame (11) is sleeved on the outer wall of the second rotating disk (13). A first return spring (14) is fixed between the inner wall of the rotating frame (11) and one side of the second rotating disk (13).

2. The prefabricated building steel structure according to claim 1, characterized in that: A first ball (10) is arranged on the outer wall of the first rotating disk (9). A thread groove (12) for guiding the moving direction of the first ball (10) is formed on the inner wall of the rotating frame (11). The first ball (10) slides in the thread groove (12).

3. A building steel structure that is convenient for assembly according to claim 1, wherein: A second guide rod (15) is fixed on the outer wall of the first sleeve (3). A second return spring (16) is fixed between the outer wall of the rotating frame (11) and the outer wall of the first sleeve (3). The second return spring (16) is sleeved on the outer wall of the second guide rod (15). A through groove (301) is formed on the outer wall of the first sleeve (3). The rotating frame (11) slides in the through groove (301). A silicone rubber friction convex block (17) for fixing the position of the first sleeve (3) is fixed at the end of the rotating frame (11).

4. A building steel structure convenient for assembly according to claim 1, characterized in that: A second inclined surface block (6) is fixed on the outer wall of the sliding plate (5). A first guide rod (19) is fixed on the outer wall of the second sleeve (18). A second ball (20) is installed at the end of the first guide rod (19). The second ball (20) abuts against the inclined surface of the second inclined surface block (6).

5. A building steel structure convenient for assembly according to claim 1, characterized in that: Second guide rods (24) are fixed on the outer walls of the first moving frame (25) and the second moving frame (26). A third ball (23) is installed at the end of the second guide rod (24). The third ball (23) abuts against the inclined surface of the first inclined surface block (21).

6. The building steel structure convenient for assembly according to claim 1 is characterized in that: There are two fixed columns (29) provided. A rotating shaft (30) is rotatably arranged on the outer walls of the two fixed columns (29). The outer wall of the rotating shaft (30) is fixed to the outer wall of the abutting plate (32). A torsion spring (31) is sleeved on the outer wall of the rotating shaft (30). One end of the torsion spring (31) is fixed to the outer wall of the fixed column (29), and the other end of the torsion spring (31) is fixed to the outer wall of the abutting plate (32). A plurality of fourth guide rods (34) are fixed to the outer wall of the first sleeve (3). Fourth balls (35) are rotatably arranged at the ends of the fourth guide rods (34).

7. A building steel structure convenient for assembly according to claim 1, characterized in that: A retaining piece (801) for restricting the position of the sliding plate (5) is fixed to the outer wall of the bolt (8).

8. A building steel structure that is convenient for assembly according to claim 1, characterized in that: A roller (33) is rotatably arranged on the outer wall of the abutting plate (32).

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