Building structure and connecting structure used between modular building structures

Abstract

The invention relates to a building structure and a connecting structure used between modular building structures, and the connecting structure used between the modular building structures comprises a rotary locking piece and a limiting piece; the limiting piece can be fixed to the first to-be-connected building module or the second to-be-connected building module. The rotary locking piece can be rotatably arranged at the lower end part of the first to-be-connected building module, the limiting piece and the upper end part of the second to-be-connected building module in a penetrating manner so as to lock and connect the first to-be-connected building module and the second to-be-connected building module. The self-locking connecting structure has the advantages that the self-locking connecting structure is simple and convenient to operate, and the overall performance of the building structures is guaranteed while self-locking connection between the modular building structures is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of modular steel structure connection, in particular to a building structure and a connecting structure for modular building structures. BACKGROUND

[0002] Modular steel structure building has the advantages of short construction period, high building quality, green low-carbon environmental protection and the like. Modular steel structure needs to be connected between prefabricated modules by using connecting nodes, so as to form a complete modular building. A fast, universal, safe and reliable connecting node between modules is the key to fully exert the advantages of fast construction of modular steel structure building and ensure the overall stress performance of the modular steel structure.

[0003] The existing connecting node between modules has the following problems: the connecting node structure is complex, the factory processing is difficult, complex and tedious connection and installation operations need to be carried out on the construction site, and the node with complex structure cannot meet the demand of fast installation and construction of modular steel structure building, the installation of the node on the module beam and column needs more holes, which weakens the overall performance of the structure, and cannot realize rigid connection between modules, and the module connection cannot be completed due to lack of construction space in the process of modular steel structure building.

[0004] Therefore, it is necessary to study a new connecting structure for modular building structures to solve the above technical problems. SUMMARY

[0005] (I) Technical problems to be solved

[0006] In view of the above shortcomings and deficiencies of the prior art, the present application provides a building structure and a connecting structure for modular building structures, which solves the technical problems of complex structure, difficult installation and weak overall performance of the connecting structure for modular building structures.

[0007] (II) Technical solutions

[0008] In order to achieve the above purpose, the main technical solutions adopted by the present application include:

[0009] In a first aspect, the present application provides a connecting structure for modular building structures, comprising a rotating locking member and a limiting member; the limiting member can be fixed to a first to-be-connected building module or a second to-be-connected building module; the rotating locking member can be rotatably arranged in the lower end of the first to-be-connected building module, the limiting member and the upper end of the second to-be-connected building module, so as to lock and connect the first to-be-connected building module and the second to-be-connected building module.

[0010] Optionally, in the connection structure between modular building structures, the limiting member can be fixed to the first building module to be connected; the rotary locking member includes a support part, a rotating shaft, and a locking part; the rotating shaft is rotatably inserted through the lower end of the first building module to be connected, the limiting member, and the upper end of the second building module to be connected; the support part and the locking part are connected to the two ends of the rotating shaft; the rotary locking member rotates between an unlocked position and a locked position; in the unlocked position, the support part is supported on the top of the limiting member, and the locking part can be located inside the second building module to be connected and can freely enter and exit the second building module to be connected; in the locked position, the support part abuts against the limiting member, and the limiting member provides a horizontal limit to the support part, and the locking part can be locked onto the upper end of the second building module to be connected.

[0011] Optionally, in the connection structure for modular building structures, the support portion includes a first support block, a second support block, and a connector; the middle part of the connector is connected to the upper end of the rotating shaft; the first support block and the second support block are symmetrically arranged at both ends of the connector; in the unlocked position, both the first support block and the second support block are movably supported on the top of the limiting member; in the locked position, the connector is supported on the top of the limiting member, and the first support block and the second support block are respectively attached to two opposite sides of the limiting member.

[0012] Optionally, in the connection structure for modular building structures, the support part further includes a receiving block; the upper part of the receiving block is provided with a groove that extends through both ends; the receiving block is disposed at the upper end of the rotating shaft; the first support block and the second support block are respectively rotatably connected to both ends of one side wall of the groove, and the areas in contact with the limiting member are both arc-shaped surfaces; in the unlocked position, the connector is disengaged from the groove; in the locked position, the connector overlaps within the groove.

[0013] Optionally, the connection structure for modular building structures further includes a pre-tensioning member; the pre-tensioning member is detachably wedged between the support and the limiting member; in the unlocked position, the pre-tensioning member is disengaged from the support and the limiting member; in the locked position, the pre-tensioning member is wedged between the support and the limiting member.

[0014] Optionally, in the connection structure between modular building structures, the rotary locking member further includes a locking block; the locking block is connected between the support and the rotating shaft; a first groove is provided at one end of the pre-tightening member facing the rotating shaft; the first groove accommodates and adapts to the shape of the locking block.

[0015] Secondly, embodiments of the present invention provide a building structure, including the connection structure described in the first aspect, a first building module to be connected, and a second building module to be connected; the first building module to be connected and the second building module to be connected are hollow columns; a first through hole is formed in the lower end wall of the first building module to be connected; a second through hole is formed in the upper end wall of the second building module to be connected; a rotating locking member passes through the first through hole, a limiting member, and the second through hole, and is located at one end of the second building module to be connected and engaged in the second through hole; the limiting member is engaged in the first through hole; a third through hole is formed in the lower end side wall of the first building module to be connected for rotating the rotating locking member.

[0016] Optionally, in the building structure, the first building module to be connected further includes a shear key; the shear key is connected to the outer edge of the first through hole; the second through hole is adapted to be connected to the outside of the shear key.

[0017] Optionally, the building structure further includes a third building module to be connected, a fourth building module to be connected, a first horizontal positioning component, and a second horizontal positioning component; the first horizontal positioning component is simultaneously connected to both the third building module to be connected and the first building module to be connected, so as to position the two at the same horizontal position; the second horizontal positioning component is simultaneously connected to both the fourth building module to be connected and the second building module to be connected, so as to position the two at the same horizontal position.

[0018] Optionally, in the building structure, the first horizontal positioning component includes an external plug disposed on the side wall of the first building module to be connected and an internal plug disposed on the side wall of the third building module to be connected; the internal plug is wedged into the external plug to position the third building module to be connected and the first building module to be connected at the same horizontal position.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of the present invention are as follows: The building structure and the connection structure between modular building structures of the present invention, by using a rotating locking component in conjunction with a limiting component, allow the entire connection structure to pass through the interior of the two building modules to be connected, and then complete the vertical assembly of the two building modules to be connected through self-rotation and locking. Compared with the prior art, the self-locking connection structure is simple in structure and convenient in operation, and ensures the overall performance of the building structure while realizing the self-locking connection between modular building structures.

[0021] In this invention, a pre-tightening member is provided between the rotating locking member and the limiting member to increase the pre-tightening force of the vertical connection, thereby enhancing the connection performance of the connection structure in the vertical direction.

[0022] In this invention, the third through hole on the inner side of the upper building module to be connected ensures the construction space for rotational self-locking and insertion of pre-tightening components during the installation of the connection structure.

[0023] The building modules to be connected in the horizontal direction of the present invention are positioned by inserting external and internal plugs on adjacent building modules in the vertical direction. With the help of the vertical connection structure, the assembly of multiple building modules to be connected can be realized, which is convenient, fast and has small error.

[0024] In this invention, the anti-shear key, horizontal positioning component, and pre-tightening component are all inclined, which increases the stability of the mechanism and eliminates the impact of machining errors of each component on the assembly process. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a building structure and a connection structure for connecting modular building structures according to Embodiment 1 of the present invention.

[0026] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the preload component;

[0027] Figure 3 This is a three-dimensional structural diagram of a building structure according to Embodiment 2 of the present invention and a connection structure for modular building structures;

[0028] Figure 4 for Figure 3 A three-dimensional structural diagram showing the connection structure located inside the first building module to be connected;

[0029] Figure 5 for Figure 3 A three-dimensional structural diagram of the connecting structure located inside the first building module to be connected in a rotating state.

[0030] Figure 6 for Figure 3 The connecting structure is located inside the first building module to be connected, as shown in a three-dimensional diagram viewed from below.

[0031] Figure 7 for Figure 3 A schematic diagram of the three-dimensional structure of the second building module to be connected;

[0032] Figure 8 for Figure 3 The connecting structure is located inside the second building module to be connected, as shown in a three-dimensional diagram viewed from below.

[0033] Figure 9 This is a three-dimensional structural diagram of the first horizontal positioning component.

[0034] [Explanation of Labels in the Attached Image]

[0035] 1: Connecting structure; 11: Rotary locking component; 111: Support part; 1111: First support block; 1112: Second support block; 1113: Connecting component; 1114: Receiving block; 1115: Groove; 112: Rotating shaft; 113: Snap-fit ​​part; 12: Limiting component; 13: Pre-tightening component; 131: First groove; 14: Snap-fit ​​block; 2: First building module to be connected; 21: First through hole; 22: Third through hole; 23: Shear key; 3: Second building module to be connected; 31: Second through hole; 4: First horizontal positioning component; 41: External plug-in; 42: Internal plug-in; 5: Second horizontal positioning component. Detailed Implementation

[0036] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0037] This invention proposes a building structure and a connection structure for modular building structures. Addressing the technical problems of complex structures, difficult installation, and weak overall performance of current connection structures for modular building structures, this invention utilizes a rotating locking component in conjunction with a limiting component. The entire connection structure is inserted inside the two building modules to be connected, and then, through self-rotation and locking, the two building modules are assembled vertically. Compared to existing technologies, this self-locking structure is simple and easy to operate, ensuring the overall performance of the building structure while achieving a self-locking connection between modular building structures.

[0038] In this invention, a pre-tightening member is provided between the rotary locking member and the limiting member to increase the pre-tightening force in the vertical direction of the connection, thereby enhancing the connection performance of the connection structure in the vertical direction.

[0039] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0040] Example 1:

[0041] Reference Figure 1 , Figure 2 and Figure 3This embodiment provides a connection structure 1 for modular building structures, including a rotary locking member 11 and a limiting member 12. The limiting member 12 can be fixed to a first building module 2 or a second building module 3 to be connected. The rotary locking member 11 can be rotatably inserted through the lower end of the first building module 2 to be connected and the upper end of the limiting member 12 and the second building module 3 to be connected. That is, the limiting member 12 provides rotational support for the rotary locking member 11. A steel block or steel plate structure with a reserved through hole in the middle can be selected. The steel block or steel plate structure is fixedly snapped onto the first building module 2 or the second building module 3 to be connected. The reserved through hole is used for rotary locking. The fastener 11 passes through. During the design process, the limiting member 12 can be directly and movably fitted onto the middle of the rotating locking member 11, and the reserved through hole should not be too large, just enough to allow the rotating locking member 11 to rotate freely. In this way, it is convenient to play a certain limiting role on the rotating locking member 11 in the horizontal direction. By rotating the rotating locking member 11, which is installed between the first building module 2 to be connected and the second building module 3 to be connected, from the unlocked position to the locked position, the first building module 2 to be connected and the second building module 3 to be connected are locked and connected. The first building module 2 to be connected and the second building module 3 to be connected are building modules with the same structure or slightly different structures.

[0042] Because the rotating locking component 11 is used in conjunction with the limiting component 12, the entire connecting structure 1 is inserted inside the upper and lower building modules to be connected. Then, through self-rotation and locking, the two building modules to be connected are assembled in the vertical direction. Compared with the existing technology, the self-locking structure is simple and easy to operate. While realizing the self-locking connection between modular building structures, it ensures the overall performance of the building structure.

[0043] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 To provide a stable connection and locking function, the rotary locking member 11 includes a support part 111, a rotating shaft 112 and a locking part 113. For ease of explanation, the limiting member 12 is fixed to the bottom of the first building module 2 to be connected located above. If the second building module 3 to be connected is located above, the limiting member 12 can also be fixed to the second building module 3 to be connected.

[0044] The rotating shaft 112 is rotatably inserted through the lower end of the first building module 2 to be connected, the upper end of the limiting member 12 and the second building module 3 to be connected. To facilitate rotation, the rotating shaft 112 is a cylinder arranged vertically. The support part 111 and the locking part 113 are connected to both ends of the rotating shaft 112. During the disassembly and installation of the connecting structure 1, the rotating locking member 11 rotates between the unlocked position and the locked position. Specifically, the connecting structure 1 is first placed between the first building module 2 and the second building module 3 to be connected. At this time, it is the unlocked position. The support part 111 is supported on the top of the limiting member 12, and the locking part 113 can be located inside the second building module 3 to be connected and can freely enter and exit the second building module 3 to be connected. That is, the locking part 113 just enters the second building module 3 to be connected. An external force is applied to the rotary locking member 11 to rotate it 90 degrees. The two ends of the support part 111 fall from the top of the limiting member 12 to the opposite sides of the limiting member 12, which plays a limiting role in the horizontal direction and can also prevent the rotary locking member 11 from rotating further. The middle part of the support part 111 abuts against the limiting member 12. At the same time, the snap-fit ​​part 113 also rotates 90 degrees relative to it and snaps into the upper end of the second building module 3 to be connected. The snap-fit ​​part 113 and the middle part of the support part 111 also form a limiting role in the vertical direction under the action of the limiting member 12, thus entering the locked position. The unlocking process is the reverse operation, which will not be described in detail here.

[0045] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 To further improve the stability of the support part 111 in the locked position, the support part 111 includes a first support block 1111, a second support block 1112, and a connector 1113. The middle part of the connector 1113 is connected to the upper end of the rotating shaft 112, and the first support block 1111 and the second support block 1112 are symmetrically arranged at both ends of the connector 1113. In the unlocked position, as... Figure 4As shown, the first support block 1111 and the second support block 1112 are both movably supported on the top of the limiting member 12, that is, the first support block 1111 and the second support block can move relative to the limiting member 12, driving the connecting member 1113 to rotate horizontally about the pivot 112; after the connecting member 1113 rotates 90 degrees, it drives the pivot 112 and the locking part 113 to rotate 90 degrees, that is, when it reaches the locked position, the connecting member 1113 is supported on the top of the limiting member 12, and the first support block 1111 and the second support block 1112 are separated from the top of the limiting member 12 and respectively abut against the two opposite sides of the limiting member 12, playing a limiting role in the horizontal direction. The first support block 1111 and the second support block 1112 can be prisms or arc-shaped plates arranged in the vertical direction, which can play a supporting role during the rotation of the supporting part 111 and a limiting role after the supporting part 111 rotates. No detailed limitation is made here.

[0046] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 To improve the smoothness of the rotation of the support part 111, the support part 111 also includes a receiving block 1114. The receiving block 1114 has a through groove 1115 at both ends on its upper part. The receiving block 1114 is located at the upper end of the rotating shaft 112. The first support block 1111 and the second support block 1112 are respectively rotatably connected to both ends of one side wall of the groove 1115, and the areas in contact with the limiting member 12 are all arc-shaped surfaces. Figure 1 , Figure 4 and Figure 5 The first support block 1111 and the second support block 1112 are rotatably connected to the two ends of the receiving block 1114 via pins. In the unlocked position, under the support of the first support block 1111 and the second support block 1112, the connecting piece 1113 disengages from the groove 1115. In the locked position, the first support block 1111 and the second support block 1112 lose the support of the limiting member 12 and fall under the action of gravity, fitting against both sides of the limiting member 12. At this time, the connecting piece 1113 also falls and overlaps in the groove 1115. It is worth emphasizing that in order to ensure the stability of the entire connecting structure 1, sufficient space needs to be reserved on both sides of the limiting member 12 to accommodate the first support block 1111 and the second support block 1112, that is, to ensure that the first support block 1111 and the second support block 1112 are in a natural hanging state, so as to better exert the limiting function.

[0047] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6To further improve the vertical connection performance of the connection structure 1, the first building module 2 to be connected, and the second building module 3 to be connected, the connection structure 1 also includes a pre-tightening member 13. The pre-tightening member 13 is detachably wedged between the support part 111 and the limiting member 12. The surfaces of the pre-tightening member 13 and the support part 111 (receiving block 1114) that come into contact with each other are inclined surfaces, which facilitates wedging. In the unlocked position, the pre-tightening member 13 is disengaged from the support part 111 and the limiting member 12. In the locked position, the pre-tightening member 13 is wedged between the support part 111 and the limiting member 12. The pre-tightening member 13 increases the pre-tightening force of the vertical connection, eliminates the influence of the processing errors of each component, and improves the stability of the overall connection.

[0048] Reference Figure 1 and Figure 2 To further increase the stability of the pretensioner 13 after insertion, the rotary locking member 11 also includes a locking block 14. The locking block 14 is connected between the support part 111 and the rotating shaft 112. The pretensioner 13 has a first groove 131 at one end facing the rotating shaft 112. The first groove 131 accommodates and adapts to the shape of the locking block 14. For example, if the pretensioner 13 is a U-shaped block tilted to one side, then the shape of the locking block 14 matches the shape of the first groove 131, which can play a stable limiting role for the pretensioner 13.

[0049] Example 2:

[0050] Reference Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 This embodiment provides a building structure, including the connecting structure 1 from Embodiment 1, a first building module 2 to be connected, and a second building module 3 to be connected. Both the first and second building modules 2 and 3 are hollow columns. A first through hole 21 is formed in the lower end wall of the first building module 2, and a second through hole 31 is formed in the upper end wall of the second building module 3. A rotating locking member 11 passes through the first through hole 21, the limiting member 12, and the second through hole 31. See also... Figure 4 and Figure 5 As shown, the two ends of the limiting member 12 are fixedly engaged with the first through hole 21. Simultaneously, the first through hole 21 extends a certain space on the other opposite sides of the limiting member 12, thus providing space for the first support block 1111 and the second support block 1112 to hang naturally. The rotating locking member 11 is engaged with the second through hole 31 at one end of the second building module 3 to be connected, as shown... Figure 7 and Figure 8As shown, the second through hole 31 facilitates the insertion of the snap-fit ​​part 113 into the second building module 3 to be connected, and the snap-fit ​​part 113 engages with the second through hole 31 after rotating 90 degrees. A third through hole 22 is provided on the lower end side wall of the first building module 2 to be connected. The third through hole 22 is located inside the building module to be connected, which facilitates operations such as rotating the locking part 11 and inserting the pre-tightening part 13 inside the building module, saving construction space. After the third through hole 22 is used, it can be sealed with a steel block that matches the shape of the third through hole 22, which helps to improve the rigidity and aesthetics of the overall structure.

[0051] Reference Figure 6 and Figure 7 In the building structure of this embodiment, the first building module 2 to be connected also includes a shear key 23. The shear key 23 is connected to the outer edge of the first through hole 21, and the second through hole 31 is adapted to be connected to the outer side of the shear key 23. It is worth noting that the shear key 23 and the second through hole 31 are connected by a wedge connection, which provides shear resistance and improves the stress performance of the building structure.

[0052] Reference Figure 6 , Figure 7 and Figure 9 In this embodiment, the vertical connection of the building structure relies on the connection structure 1 in embodiment 1. To further facilitate the positioning of the building modules to be connected in the horizontal direction, it also includes a third building module to be connected, a fourth building module to be connected, a first horizontal positioning component 4, and a second horizontal positioning component 5. The first horizontal positioning component 4 is connected to both the third building module to be connected and the first building module to be connected 2 to position them at the same horizontal position. The second horizontal positioning component 5 is connected to both the fourth building module to be connected and the second building module to be connected 3 to position them at the same horizontal position. Here, the first horizontal positioning component 4 and the second horizontal positioning component 5 are merely markings for differentiation, and their structures are identical.

[0053] Reference Figure 6 , Figure 7 and Figure 9In this embodiment, to improve the accuracy of positioning between building modules to be connected in the horizontal direction, the first horizontal positioning component 4 is described as an example. The first horizontal positioning component 4 includes an outer plug 41 disposed on the side wall of the first building module 2 to be connected and an inner plug 42 disposed on the side wall of the third building module to be connected. The inner plug 42 is wedged into the outer plug 41 to position the third building module to be connected and the first building module 2 to be connected at the same horizontal position. Here, in order not to affect the distance between the building modules to be connected, the inner plug 42 is embedded in the side wall of the third building module to be connected. The corresponding outer plug 41 is embedded in the gap reserved by the inner plug 42 during installation. This can ensure zero-distance contact between two adjacent building modules to be connected, ensuring the overall assembly effect while positioning. By inserting the outer plug 41 and inner plug 42 disposed on adjacent building modules to be connected in the vertical direction, the positioning of adjacent building modules to be connected in the horizontal direction is realized. With the help of the vertical connection structure 1, the assembly of multiple building modules to be connected can be realized, which is convenient, fast and has small error.

[0054] In this invention, the anti-shear key 23, the first horizontal positioning component 4, and the pre-tightening component 13 are all inclined, which increases the stability of the mechanism and eliminates the impact of the processing errors of each component on the assembly process.

[0055] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A connecting structure for modular building structures, characterized in that: it comprises a rotating locking member (11) and a limiting member (12); the limiting member (12) can be fixed to a first building module (2) to be connected or a second building module (3) to be connected; and the rotating locking member (11) can be rotatably arranged through the lower end of the first building module (2) to be connected, the limiting member (12) and the upper end of the second building module (3) to be connected, so as to lock and connect the first building module (2) to be connected and the second building module (3) to be connected.

2. The connecting structure (1) for modular building structures according to claim 1, characterized in that: the limiting member (12) can be fixed to the first building module (2) to be connected; the rotating locking member (11) comprises a supporting part (111), a rotating shaft (112) and a clamping part (113); the rotating shaft (112) is used for rotatably arranging through the lower end of the first building module (2) to be connected, the limiting member (12) and the upper end of the second building module (3) to be connected; the supporting part (111) and the clamping part (113) are connected to both ends of the rotating shaft (112); the rotating locking member (11) is rotatable between an unlocked position and a locked position; in the unlocked position, the supporting part (111) is supported on the top of the limiting member (12), and the clamping part (113) can be located inside the second building module (3) to be connected and can freely enter and exit the second building module (3) to be connected; in the locked position, the supporting part (111) abuts against the limiting member (12), and the limiting member (12) limits the supporting part (111) in the horizontal direction, and the clamping part (113) can be clamped to the upper end of the second building module (3) to be connected.

3. The connecting structure for modular building structures according to claim 2, characterized in that: the supporting part (111) comprises a first supporting block (1111), a second supporting block (1112) and a connecting member (1113); the middle part of the connecting member (1113) is connected to the upper end of the rotating shaft (112); the first supporting block (1111) and the second supporting block (1112) are symmetrically arranged at both ends of the connecting member (1113), respectively; in the unlocked position, the first supporting block (1111) and the second supporting block (1112) are both movably supported on the top of the limiting member (12); in the locked position, the connecting member (1113) is supported on the top of the limiting member (12), and the first supporting block (1111) and the second supporting block (1112) are respectively attached to two opposite side surfaces of the limiting member (12).

4. The connecting structure for modular building structures according to claim 3, characterized in that: the supporting part (111) further comprises a receiving block (1114); the receiving block (1114) is provided with a groove (1115) penetrating through both ends at the upper part; and the receiving block (1114) is arranged at the upper end of the rotating shaft (112). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The first support block (1111) and the second support block (1112) correspond to the two ends of a side wall of the groove (1115) respectively, and the areas in contact with the limiting member (12) are both arc surfaces; In the unlocked position, the connecting member (1113) is separated from the groove (1115); In the locked position, the connecting member (1113) overlaps in the groove (1115).

5. The connecting structure for modular building structures according to claim 2, further comprising a pre-tightening member (13); the pre-tightening member (13) is detachably wedged between the support part (111) and the limiting member (12); in the unlocked position, the pre-tightening member (13) is separated from the support part (111) and the limiting member (12); in the locked position, the pre-tightening member (13) is wedged between the support part (111) and the limiting member (12).

6. The connecting structure for modular building structures according to claim 5, wherein the rotating locking member (11) further comprises a clamping block (14); the clamping block (14) is connected between the support part (111) and the rotating shaft (112); the pre-tightening member (13) is provided with a first groove (131) at one end thereof facing the rotating shaft (112); the first groove (131) accommodates and is adapted to the shape of the clamping block (14).

7. A building structure, comprising the connecting structure (1) according to any one of claims 1-6, a first building module (2) to be connected and a second building module (3) to be connected; the first building module (2) to be connected and the second building module (3) to be connected are hollow cylinders; the first building module (2) to be connected is provided with a first through hole (21) in a lower end wall thereof; the second building module (3) to be connected is provided with a second through hole (31) in an upper end wall thereof; the rotating locking member (11) passes through the first through hole (21), the limiting member (12) and the second through hole (31), and is clamped at one end thereof in the second through hole (31) of the second building module (3) to be connected; the limiting member (12) is clamped in the first through hole (21); a third through hole (22) is provided in a lower end side wall of the first building module (2) to be connected for rotating the rotating locking member (11).

8. The building structure according to claim 7, wherein the first building module (2) to be connected further comprises a shear key (23); the shear key (23) is connected to the outer edge of the first through hole (21); the second through hole (31) is adapted to be fitted on the outer side of the shear key (23).

9. The building structure according to claim 7, further comprising a third building module to be connected, a fourth building module to be connected, a first horizontal positioning member (4) and a second horizontal positioning member (5); the first horizontal positioning member (4) is connected to the third building module to be connected and the first building module (2) to be connected at the same time to position them at the same horizontal position. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Said second horizontal positioning means (5) are connected to both said fourth building module to be connected and said second building module to be connected (3) to position them in the same horizontal position.

10. The building structure according to claim 9, characterized in that: Said first horizontal positioning means (4) comprise an outer insert (41) provided on the lateral wall of said first building module to be connected (2) and an inner insert (42) provided on the lateral wall of said third building module to be connected; Said inner insert (42) is wedged in said outer insert (41) to position said third building module to be connected and said first building module to be connected (2) in the same horizontal position.

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