Modular building assembly structure

Abstract

The utility model relates to the technical field of building construction, in particular to a modular building assembly structure, a protection frame adopts a rectangular frame body formed by butting two semi-rectangular frames, the protection frame is convenient to disassemble, and as a rectangular groove is formed in the top surface of an integral edge strip of the protection frame, and a rotating frame is connected to the integral edge strip, the protection frame is convenient to disassemble. In addition, due to the arrangement of the clamping assemblies, stable connection is formed between the protection frame and the middle supporting strip, and therefore connection of the two semi-rectangular frames is guaranteed, and due to the arrangement of the belleville springs, the connection of the two semi-rectangular frames is guaranteed. Relative movement of the rotating frame and the rotating supporting shaft is met, clamping stability of the rotating frame to the connecting reinforcing steel bars is guaranteed, the connecting reinforcing steel bars are clamped and positioned through the protective frame, the rotating frame, the limiting block and the rotating frame, and therefore butt joint of connecting holes in the bottom of a subsequent prefabricated wall and the connecting reinforcing steel bars is guaranteed, assembling efficiency is guaranteed, and assembling quality is improved. And the life safety of workers is also guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a modular building assembly structure. Background Art

[0002] Green building refers to high-quality buildings that save resources, protect the environment, reduce pollution, provide people with healthy, applicable and efficient use space, and maximize the harmonious coexistence of man and nature throughout their entire life cycle. In order to ensure construction efficiency, the application of modular building components in the field of green buildings has been popularized, so that its modular components can greatly improve construction efficiency during construction.

[0003] In the prior art, when installing a prefabricated modular wall, a lifting device is used to lift it. Then, during installation, the prefabricated modular wall needs to be precisely connected to the connecting steel bars below. In the actual connection process, the connecting steel bars are not all in a vertical state, and it is often necessary to manually use tools to bend the connecting steel bars to achieve precise connection. Once multiple connecting steel bars in a group are in a bent state, it will greatly increase the difficulty of connection and delay construction efficiency. Once the tool suddenly separates from the connecting steel bars, it may cause serious safety accidents and threaten the health of the workers. Therefore, a modular green building assembly structure is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a modular building assembly structure, which limits the connection steel bars, facilitates the accurate and rapid connection between the prefabricated walls and the connection steel bars, ensures the assembly efficiency, and also protects the life safety of the workers.

[0005] The utility model discloses a modular building assembly structure, comprising a prefabricated wall, a base and connecting steel bars. A plurality of connecting steel bars are connected to the top surface of the base, each group of connecting steel bars comprises six connecting steel bars, the six connecting steel bars are arranged in a 2×3 rectangular array, the top of each connecting steel bar is connected to the inside of the bottom surface of the prefabricated wall, and comprises a docking assembly, the docking assembly comprises a protective frame, an intermediate brace, a limit block, a rotating frame and a rotating shaft, the protective frame comprises two semi-rectangular frames composed of three side strips, the two semi-rectangular frames are symmetrically arranged, the two semi-rectangular frames form a rectangular frame body composed of four side strips, two symmetrical side strips in the rectangular frame body are integral side strips, and the other two symmetrical side strips are docking side strips, the protective frame is connected to the top surface of the base, a plurality of protective frames are provided, and the plurality of protective frames are the same in number as the plurality of groups of connecting steel bars, the six connecting steel bars of each group of connecting steel bars are arranged in the rectangular frame body of the protective frame, a rectangular groove is provided on the top surface of the integral side strip of each protective frame, the top surfaces of the two rectangular grooves are both open, the cross section of the intermediate brace is rectangular, the intermediate brace is connected in the two rectangular grooves, and a Two shaft holes Ⅰ are along the length direction of the middle support bar. Both shaft holes Ⅰ penetrate the middle support bar. Both shaft holes Ⅰ are rotatably connected with rotating shafts. Both ends of the rotating shafts extend out of shaft holes Ⅰ. Three grooves are arranged on the two side walls of the middle support bar parallel to the two butt-jointed side bars of the protective frame. The three groups of grooves on the two side walls of the middle support bar are symmetrical to each other. The two rotating shafts penetrate the three grooves on one side wall of the middle support bar respectively. Three rotating support shafts are fixed on each rotating shaft. Each rotating support shaft is respectively arranged in a groove. The rear end of each rotating support shaft is provided with shaft hole Ⅱ , the shaft hole II is fixedly connected to the rotating shaft, the front end of the rotating support shaft is connected to a rotating frame, and an arc groove II is provided on the side wall of the rotating frame away from the rotating support shaft. The docking assembly also includes a limiting block, and an arc groove I is provided on one side wall of the limiting block. The arc groove I is connected to the outer wall of the connecting steel bar. There are six limiting blocks, and the six limiting blocks are all connected in the protective frame. The arc groove I of each limiting block is connected to the outer wall of a connecting steel bar, and the side wall of the limiting block away from the connecting steel bar is connected to the inner wall of the limiting block. Each connecting steel bar is connected symmetrically to the arc groove II and the arc groove I.

[0006] Furthermore, a countersunk hole is provided at the front end of the rotating support shaft, a support column is provided on the side wall of the rotating frame, the support column extends out of the side wall of the rotating frame, an external thread I is provided on the outer wall of one end of the support column away from the rotating frame, a baffle is connected to the support column, a screw hole I is provided at the center of the baffle, the screw hole I is connected to the external thread I, the baffle is slidably connected in the countersunk hole, an internal thread I is provided on the inner wall of the front end of the countersunk hole, a baffle ring is connected to the internal thread I, an external thread III is provided on the outer wall of the baffle ring, a through hole I is provided in the center of the baffle ring, the external thread III is connected to the internal thread I, the inner diameter of the through hole I is larger than the outer diameter of the support column, and the support column is slidably connected in the through hole I.

[0007] Furthermore, a plurality of butterfly springs are connected between the retaining ring and the side wall of the rotating frame, and the plurality of butterfly springs are all sleeved on the supporting column.

[0008] Furthermore, a support column tube is provided on the side wall of the rotating frame, the support column tube is arranged on the outside of the support column, an external thread II is provided on the outer wall of the support column tube, a limiting tube is connected to the support column tube, a through hole II is provided at the center of the limiting tube, an internal thread II is provided on the inner wall of one end of the through hole II, the internal thread II is connected to the external thread II, and the rotating support shaft is slidably connected in the through hole II.

[0009] Furthermore, a semicircular support bar is fixedly connected to the inner wall of the arc groove II, and the semicircular support bar is connected to the outer wall of the connecting steel bar. There is at least one semicircular support bar.

[0010] Furthermore, a clamping assembly is provided on the outer wall of the protective frame, and the clamping assembly includes a first fixed block and a second fixed block. Both ends of the middle strut extend out of the two integral side strips of the protective frame. Two clamping assemblies are provided, and the two clamping assemblies are respectively connected to the two integral side strips of the protective frame. The first fixed block and the second fixed block are both fixedly connected to the outer wall of the protective frame. The end of the middle strut extending out of the integral side strip of the protective frame is clamped between the first fixed block and the second fixed block. The first fixed block is provided with a screw hole II, and the second fixed block is provided with a pin hole II. The ends of the middle strut extending out of the integral side strip of the protective frame are provided with a pin hole I, and the screw hole II, the pin hole I and the pin hole I are coaxial. The clamping assembly also includes a bolt pin, and the bolt pin includes a bolt portion and a pin portion. The outer diameter of the pin portion is smaller than the outer diameter of the bolt portion. The pin portion is threadedly connected to the front end of the bolt portion, the bolt portion is connected in the screw hole II, and the pin portion is inserted in the pin hole I.

[0011] Furthermore, handles are fixedly connected to both ends of the rotating shaft extending out of the shaft hole I, and saw teeth are provided on the outer walls of the handles.

[0012] The beneficial effects of the utility model are:

[0013] The protective frame is formed by connecting two semi-rectangular frames to form a rectangular frame. In order to facilitate the disassembly of the protective frame, since the rectangular groove is arranged on the top surface of the integral side bar of the protective frame, that is, the rotating frame is connected to the integral side bar, the clamping of the connecting steel bars will not cause the connecting side bars to separate from each other. In addition, the setting of the clamping assembly enables the protective frame to form a stable connection with the middle support bar, thereby ensuring the connection of the two semi-rectangular frames.

[0014] The utility model not only satisfies the relative movement between the rotating frame and the rotating support shaft but also ensures the clamping stability of the rotating frame on the connecting steel bars through the arrangement of the butterfly spring.

[0015] The utility model clamps and positions the connecting steel bars by means of the protection frame, the rotating frame, the limit block and the rotating frame, thereby ensuring the docking of the connecting holes at the bottom of the subsequent prefabricated wall with the connecting steel bars, ensuring the assembly efficiency, and also ensuring the life safety of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the use state of the utility model;

[0017] Figure 2 This is a top view of the structure of the utility model;

[0018] Figure 3 For this utility model Figure 1 AA section view;

[0019] Figure 4 For this utility model Figure 3 A partial enlargement of Figure Ⅰ ;

[0020] Figure 5 For this utility model Figure 1 BB cross-sectional view;

[0021] Figure 6 For this utility model Figure 1 CC section view;

[0022] Figure 7 For this utility model Figure 3 DD cross-sectional view;

[0023] Figure 8 It is a structural schematic diagram of the rotating frame of the utility model;

[0024] Fig. 9 It is a structural schematic diagram of the rotating support shaft of the utility model;

[0025] Fig.10 It is a structural schematic diagram of the retaining ring of the utility model;

[0026] Fig.11 It is a structural schematic diagram of the limiting tube of the utility model.

[0027] In the figure: 1. Prefabricated wall; 2. Base; 3. Docking assembly; 301. Protective frame; 3011. Rectangular groove; 302. Middle support bar; 3021. Groove; 3022. Axis hole I; 3023. Pin hole I; 303. Limit block; 3031. Arc groove I; 304. Rotating frame; 3041. Arc groove II; 3042. Semicircular support bar; 3043. Support column; 3044. External thread I; 3045. Baffle; 3046. Support column tube; 3047. Screw hole I; 3048. External thread II; 30 5. First fixed block; 3051. Screw hole II; 306. Rotating shaft; 307. Handle; 308. Second fixed block; 3081. Pin hole II; 309. Bolt pin; 3091. Bolt part; 3092. Pin part; 310. Rotating support shaft; 3101. Shaft hole II; 3102. Countersunk hole; 3103. Internal thread I; 311. Retaining ring; 3111. External thread III; 3112. Through hole I; 312. Limiting tube; 3121. Internal thread II; 3122. Through hole II; 313. Butterfly spring; 4. Connecting steel bars. DETAILED DESCRIPTION

[0028] like Figure 1-Figure 11As shown, the utility model is a modular building assembly structure including a prefabricated wall 1, a base 2 and connecting steel bars 4, a plurality of groups of connecting steel bars 4 are connected to the top surface of the base 2, each group of connecting steel bars 4 includes six connecting steel bars 4, the six connecting steel bars 4 are arranged in a 2×3 rectangular array, the top of each connecting steel bar 4 is connected to the inside of the bottom surface of the prefabricated wall 1, including a docking component 3, the docking component 3 includes a protective frame 301, an intermediate support bar 302, a limit block 303, a rotating frame 304 and a rotating shaft 306, the protective frame 301 includes two semi-rectangular frames composed of three side strips, the two semi-rectangular frames are symmetrically arranged, the two semi-rectangular frames form a rectangular frame composed of four side strips, and two of the rectangular frames The symmetrical side strips are integral side strips, and the other two symmetrical side strips are butt side strips. The protective frame 301 is connected to the top surface of the base 2. There are multiple protective frames 301, and the number of multiple protective frames 301 is the same as the number of multiple groups of connecting steel bars 4. The six connecting steel bars 4 of each group of connecting steel bars 4 are all arranged in the rectangular frame body of the protective frame 301. A rectangular groove 3011 is provided on the top surface of the integral side strip of each protective frame 301. The top surfaces of the two rectangular grooves 3011 are both open. The cross section of the middle brace 302 is rectangular. The middle brace 302 is connected in the two rectangular grooves 3011. Two axial holes I3022 are provided on the middle brace 302. Along the length direction of the middle brace 302, the two axial holes I3022 penetrate the middle The support bar 302 has two shaft holes Ⅰ 3022 in which the shaft 306 is rotatably connected. Both ends of the shaft 306 extend out of the shaft hole Ⅰ 3022. Three grooves 3021 are provided on the two side walls of the middle support bar 302 parallel to the two butt-jointed side bars of the protection frame 301. The three groups of grooves 3021 on the two side walls of the middle support bar 302 are symmetrical to each other. The two shafts 306 respectively penetrate the three grooves 3021 on one side wall of the middle support bar 302. Three rotating support shafts 310 are fixed on each rotating shaft 306. Each rotating support shaft 310 is respectively arranged in a groove 3021. A shaft hole Ⅱ 3101 is provided at the rear end of each rotating support shaft 310. The shaft hole Ⅱ 3101 is fixedly connected to the rotating shaft 30 6, a rotating frame 304 is connected to the front end of the rotating support shaft 310, and an arc groove II 3041 is provided on the side wall of the rotating frame 304 away from the rotating support shaft 310. The docking assembly 3 also includes a limiting block 303, and an arc groove I 3031 is provided on one side wall of the limiting block 303. The arc groove I 3031 is connected to the outer wall of the connecting steel bar 4. There are six limiting blocks 303, and the six limiting blocks 303 are all connected in the protective frame 301. The arc groove I 3031 of each limiting block 303 is connected to the outer wall of a connecting steel bar 4, and the side wall of the limiting block 303 away from the connecting steel bar 4 is connected to the inner wall of the limiting block 303. Each connecting steel bar 4 is connected symmetrically to the arc groove II 3041 and the arc groove I 3031.

[0029] When the utility model is in use, the protective frame 301 is first placed on the top surface of the base 2, and each group of connecting steel bars 4 is ensured to be located in the protective frame 301. Before connecting the rotating frame 302, it is necessary to ensure that the direction of the rotating frame 304 is perpendicular to the base 2. Then the rotating frame 302 is placed in the rectangular groove 3011, and the rotating shaft 306 drives the rotating frame 304 to rotate, so that the arc groove II 3041 is connected to the outer wall of the connecting steel bar 4. Finally, the limit block 303 is inserted into the protective frame 301 and the arc groove I 3031 is connected to the connecting steel bar 4. At this time, the clamping and positioning of the connecting steel bar 4 is completed, and the displacement and skew of the connecting steel bar 4 are effectively prevented. , thereby ensuring the subsequent docking of the connecting hole at the bottom of the prefabricated wall 1 with the connecting steel bar 4. When the prefabricated wall 1 is docked with the connecting steel bar 4, it should be noted that when the upper end of the connecting steel bar 4 has been inserted into the connecting hole at the bottom of the prefabricated wall 1, the lifting machinery is controlled to stop the falling of the prefabricated wall 1. The prefabricated wall 1 should be disassembled before continuing to fall. When disassembling the utility model, the limit block 303 is first moved upward and taken out, and the rotating shaft 306 drives the rotating frame 304 to rotate so that the rotating frame 304 changes to a vertical state, and then the rotating frame 302 is pulled out from between the two rows of connecting steel bars 4, and then the two docking edge strips are separated to remove the protective frame 301.

[0030] For the purpose of illustrating the problem, this embodiment only takes the example that each group of connecting steel bars 4 includes six connecting steel bars 4 and the six connecting steel bars 4 are arranged in a 2×3 rectangular array. In actual use, after the number and arrangement of the connecting steel bars 4 are changed, the number of the rotating frame 304, the limit blocks 303 and the grooves 3021 and the size of the protective frame 301 in this embodiment are adaptively changed according to actual conditions before use.

[0031] In the utility model, the protective frame 301 is formed into a rectangular frame by connecting two semi-rectangular frames. In order to facilitate the disassembly of the protective frame 301, since the groove 3021 is arranged on the top surface of the integral side strip of the protective frame 301, that is, the rotating frame 304 is connected to the integral side strip, the clamping of the connecting steel bar 4 will not cause the connecting side strips to separate from each other.

[0032] The rectangular groove 3011 is provided to provide space for the rotation of the rotating shaft 306 . During actual design and processing, attention should be paid to providing a certain gap between the rotating shaft 306 and the rectangular groove 3011 .

[0033] In order to facilitate the installation and removal of the limit block 303, a hook hole or a lifting ring may be provided on the top surface of the limit block 303 in actual use.

[0034] When the utility model is disassembled, the distance from the bottom surface of the prefabricated wall 1 to the base 2 should reserve a height after the rotating frame 304 is changed to a vertical state and a height for the limit block 303 to be taken out.

[0035] In actual use, the two butting edge strips may be separated first, the protective frame 301 may be removed, and then the limiting block 303 may be removed last.

[0036] It can be found from the above technical solution that when the rotating shaft 306 drives the rotating frame 304 to rotate, the arc groove II 3041 will cause a certain interference and blocking phenomenon with the connecting steel bar 4 during the rotation process. After the blocking occurs, the rotating shaft 306 can only be operated by vigorously rotating, which makes the above technical solution have certain inconveniences. In order to solve this problem, the front end of the rotating support shaft 310 of the utility model is provided with a countersunk hole 3102, and the side wall of the rotating frame 304 is provided with a support column 3043, and the support column 3043 extends out of the side wall of the rotating frame 304. The outer wall of the end of the support column 3043 away from the rotating frame 304 is provided with an external thread I 3044, and the support column 3043 is connected to the baffle 3045, and the center of the baffle 3045 is provided with a screw hole I 3047, and the screw hole I 3047 is connected to the external thread I 3044. The baffle plate 3045 is slidably connected in the counterbore 3102. An internal thread Ⅰ3103 is provided on the inner wall of the front end of the counterbore 3102. A baffle ring 311 is connected to the internal thread Ⅰ3103. An external thread Ⅲ3111 is provided on the outer wall of the baffle ring 311. A through hole Ⅰ3112 is provided in the center of the baffle ring 311. The external thread Ⅲ3111 is connected to the internal thread Ⅰ3103. The inner diameter of the through hole Ⅰ3112 is larger than the outer diameter of the support column 3043. The support column 3043 is slidably connected in the through hole Ⅰ3112.

[0037] When the rotating frame 304 is rotated using the above structure, the rotating frame 304 and the rotating support shaft 310 can move relative to each other, thereby eliminating the interference and obstruction between the arc groove II 3041 and the connecting steel bar 4. The retaining ring 311 is configured to prevent the baffle 3045 from completely disengaging from the countersunk hole 3102, causing the rotating frame 304 to disengage from the rotating support shaft 310.

[0038] However, due to the relative movement between the rotating frame 304 and the rotating support shaft 310, the clamping force of the rotating frame 304 on the connecting steel bar 4 may be insufficient. To solve this problem, the utility model connects multiple butterfly springs 313 between the ring 311 and the side wall of the rotating frame 304, and the multiple butterfly springs 313 are all sleeved on the support column 3043.

[0039] The utility model provides the butterfly spring 313 to ensure the relative movement between the rotating frame 304 and the rotating support shaft 310 and ensure the clamping stability of the rotating frame 304 on the connecting steel bars 4.

[0040] The butterfly spring 313 is provided to ensure that when the rotating frame 304 is stably clamped on the outer wall of the connecting steel bar 4, the butterfly spring 313 has a certain amount of compression, thereby providing a clamping force.

[0041] A support column tube 3046 is provided on the side wall of the rotating frame 304, and the support column tube 3046 is provided on the outside of the support column 3043. An external thread II 3048 is provided on the outer wall of the support column tube 3046. A limiting tube 312 is connected to the support column tube 3046. A through hole II 3122 is provided at the center of the limiting tube 312. An internal thread II 3121 is provided on the inner wall of one end of the through hole II 3122. The internal thread II 3121 is connected to the external thread II 3048, and the rotating support shaft 310 is slidably connected in the through hole II 3122.

[0042] Since the thickness of the baffle 3045 cannot be set too thick, the utility model later sets a support column tube 3046 to provide a certain guiding effect for the relative movement of the rotating frame 304 and the rotating support shaft 310. In addition, the support column tube 3046 also covers the butterfly spring 313 inside, thereby improving a certain protective effect on the butterfly spring 313.

[0043] It should be noted that, since the outer diameter of the butterfly spring 313 will expand when it is compressed, the outer diameter of the support column tube 3046 must be larger than the outer diameter of the butterfly spring 313 by a certain size.

[0044] A semicircular support bar 3042 is fixedly connected to the inner wall of the arc groove II 3041 , and the semicircular support bar 3042 is connected to the outer wall of the connecting steel bar 4 , and at least one semicircular support bar 3042 is provided.

[0045] Since the rotation of the rotating frame 304 requires the compression of the butterfly spring 313, and the compressed butterfly spring 313 will eventually become the torque for rotating the shaft 306, and one shaft 306 is actually connected to three rotating frames 304, if the torque required to rotate the shaft 306 is too large, the operation will be more laborious and difficult. The thickness of the support bar 3042 is less than the overall thickness of the rotating frame 304. The setting of the support bar 3042 reduces the contact area between the connecting steel bar 4 and the rotating frame 304, thereby reducing the force required to rotate the rotating frame 304.

[0046] The utility model also includes a clamping assembly, a clamping assembly is provided on the outer wall of the protective frame 301, the clamping assembly includes a first fixed block 305 and a second fixed block 308, both ends of the intermediate support bar 302 extend out of the two integral side strips of the protective frame 301, and the clamping assembly is provided with two, and the two clamping assemblies are respectively connected to the two integral side strips of the protective frame 301, the first fixed block 305 and the second fixed block 308 are both fixedly connected to the outer wall of the protective frame 301, and the end of the intermediate support bar 302 extending out of the integral side strip of the protective frame 301 is clamped between the first fixed block 305 and the second fixed block 308, and the first fixed block 305 A screw hole II 3051 is provided on it, a pin hole II 3081 is provided on the second fixing block 308, and pin holes I 3023 are provided at the ends of the middle support bar 302 extending out of the integral side bar of the protective frame 301. The screw hole II 3051, the pin hole I 3023 and the pin hole I 3023 are coaxial. The clamping assembly also includes a bolt pin 309, and the bolt pin 309 includes a bolt portion 3091 and a pin portion 3092. The outer diameter of the pin portion 3092 is smaller than the outer diameter of the bolt portion 3091. The pin portion 3092 is threadedly connected to the front end of the bolt portion 3091, the bolt portion 3091 is connected in the screw hole II 3051, and the pin portion 3092 is inserted in the pin hole I 3023.

[0047] The utility model forms a stable connection between the protection frame 301 and the middle support bar 302 through the setting of the clamping assembly, thereby ensuring the connection of the two semi-rectangular frames. The connection can be completed by rotating the bolt pin 309 during operation. It is easy to use and can be used whether the pin part 3092 is inserted into the pin hole II 3081 during use. It should be noted that the position of the pin hole I 3023 should not interfere with the position of the shaft hole I 3022.

[0048] The two ends of the rotating shaft 306 extending out of the shaft hole I 3022 are fixedly connected with handles 307, and saw teeth are arranged on the outer wall of the handle 307. It is more convenient to rotate the rotating shaft 306 through the handle 307.

Claims

1. A modular building assembly structure, comprising a prefabricated wall (1), a base (2) and connecting steel bars (4), wherein a plurality of groups of connecting steel bars (4) are connected to the top surface of the base (2), each group of connecting steel bars (4) comprises six connecting steel bars (4), the six connecting steel bars (4) are arranged in a 2×3 rectangular array, the top of each connecting steel bar (4) is connected to the inside of the bottom surface of the prefabricated wall (1), and is characterized in that: The invention comprises a docking assembly (3), wherein the docking assembly (3) comprises a protective frame (301), an intermediate support bar (302), a limit block (303), a rotating frame (304) and a rotating shaft (306), wherein the protective frame (301) comprises two semi-rectangular frames each having three side bars, wherein the two semi-rectangular frames are symmetrically arranged, and the two semi-rectangular frames form a rectangular frame body consisting of four side bars, wherein two symmetrical side bars in the rectangular frame body are integral side bars, and the other two symmetrical side bars are docking side bars, and the protective frame (301) is connected to the top surface of the base (2), and a plurality of protective frames (301) are provided, and the number of the plurality of protective frames (301) is the same as the number of the plurality of groups of connecting steel bars (4), and the six connecting steel bars (4) of each group of connecting steel bars (4) are arranged on In the rectangular frame body of the protection frame (301), a rectangular groove (3011) is provided on the top surface of the integral side strip of each protection frame (301), the top surfaces of the two rectangular grooves (3011) are both open, the cross section of the middle support bar (302) is rectangular, the middle support bar (302) is connected in the two rectangular grooves (3011), two shaft holes I (3022) are provided on the middle support bar (302), along the length direction of the middle support bar (302), the two shaft holes I (3022) both penetrate the middle support bar (302), the two shaft holes I (3022) are rotatably connected with a rotating shaft (306), the two ends of the rotating shaft (306) both extend out of the shaft hole I (3022), and are parallel to the two butting side strips of the protection frame (301). Three grooves (3021) are provided on both side walls of the middle support bar (302), and the three groups of grooves (3021) on the two side walls of the middle support bar (302) are symmetrical to each other. Two rotating shafts (306) respectively penetrate the three grooves (3021) on one side wall of the middle support bar (302), and three rotating support shafts (310) are fixed on each rotating shaft (306), and each rotating support shaft (310) is respectively arranged in a groove (3021), and each rotating support shaft (310) is provided with an axis hole II (3101) at the rear end, and the axis hole II (3101) is fixedly connected to the rotating shaft (306), and the front end of the rotating support shaft (310) is connected to a rotating frame (304), and the rotating frame (304) is far away from the rotating support shaft. A circular arc groove II (3041) is provided on the side wall of (310), and the docking assembly (3) further comprises a limit block (303), a side wall of the limit block (303) is provided with a circular arc groove I (3031), the circular arc groove I (3031) is connected to the outer wall of the connecting steel bar (4), six limit blocks (303) are provided, and the six limit blocks (303) are all connected in the protection frame (301), the circular arc groove I (3031) of each limit block (303) is connected to the outer wall of a connecting steel bar (4), the side wall of the limit block (303) away from the connecting steel bar (4) is connected to the inner wall of the limit block (303), and each connecting steel bar (4) is connected to the circular arc groove II (3041) and the circular arc groove I (3031) symmetrically.

2. A modular building assembly structure according to claim 1, characterized in that: The front end of the rotating support shaft (310) is provided with a countersunk hole (3102), the side wall of the rotating frame (304) is provided with a support column (3043), the support column (3043) extends out of the side wall of the rotating frame (304), an outer wall of one end of the support column (3043) away from the rotating frame (304) is provided with an external thread I (3044), the support column (3043) is connected to a baffle (3045), the center of the baffle (3045) is provided with a screw hole I (3047), the screw hole I (3047) is connected to the external thread I (3044), and the baffle (30 45) is slidably connected in the counterbore (3102), an internal thread I (3103) is provided on the inner wall of the front end of the counterbore (3102), a retaining ring (311) is connected to the internal thread I (3103), an external thread III (3111) is provided on the outer wall of the retaining ring (311), a through hole I (3112) is provided in the center of the retaining ring (311), the external thread III (3111) is connected to the internal thread I (3103), the inner diameter of the through hole I (3112) is larger than the outer diameter of the support column (3043), and the support column (3043) is slidably connected in the through hole I (3112).

3. A modular building assembly structure according to claim 2, characterized in that: A plurality of butterfly springs (313) are connected between the retaining ring (311) and the side wall of the rotating frame (304), and the plurality of butterfly springs (313) are all sleeved on the supporting column (3043).

4. A modular building assembly structure according to claim 3, characterized in that: A support column tube (3046) is provided on the side wall of the rotating frame (304), the support column tube (3046) is arranged on the outside of the support column (3043), an external thread II (3048) is provided on the outer wall of the support column tube (3046), a limit tube (312) is connected to the support column tube (3046), a through hole II (3122) is provided at the center of the limit tube (312), an internal thread II (3121) is provided on the inner wall of one end of the through hole II (3122), the internal thread II (3121) is connected to the external thread II (3048), and the rotating support shaft (310) is slidably connected in the through hole II (3122).

5. A modular building assembly structure according to claim 4, characterized in that: A semicircular support bar (3042) is fixedly connected to the inner wall of the arc groove II (3041), and the semicircular support bar (3042) is connected to the outer wall of the connecting steel bar (4). There is at least one semicircular support bar (3042).

6. A modular building assembly structure according to any one of claims 1 to 5, characterized in that: The outer wall of the protective frame (301) is provided with a clamping assembly, which includes a first fixing block (305) and a second fixing block (308). Both ends of the middle support bar (302) extend out of two integral side bars of the protective frame (301). Two clamping assemblies are provided, and the two clamping assemblies are respectively connected to the two integral side bars of the protective frame (301). The first fixing block (305) and the second fixing block (308) are both fixedly connected to the outer wall of the protective frame (301). The end of the middle support bar (302) extending out of the integral side bar of the protective frame (301) is clamped between the first fixing block (305) and the second fixing block (308). The first fixing block (305) is provided with a screw hole II (3051). The second fixing block (308) is provided with a pin hole II (3081), the ends of the middle support bar (302) extending out of the integral side bar of the protection frame (301) are provided with a pin hole I (3023), the screw hole II (3051), the pin hole I (3023) and the pin hole I (3023) are coaxial, and the clamping assembly also includes a bolt pin (309), the bolt pin (309) includes a bolt part (3091) and a pin part (3092), the outer diameter of the pin part (3092) is smaller than the outer diameter of the bolt part (3091), the pin part (3092) is threadedly connected to the front end of the bolt part (3091), the bolt part (3091) is connected in the screw hole II (3051), and the pin part (3092) is inserted in the pin hole I (3023).

7. A modular building assembly structure according to claim 6, characterized in that: Both ends of the rotating shaft (306) extending out of the shaft hole I (3022) are fixedly connected to handles (307), and saw teeth are provided on the outer wall of the handles (307).

Images