Modular building sub- and superstructure

Abstract

The application relates to the technical field of module building connecting nodes, in particular to a modular building primary-secondary structure which comprises a first connecting mechanism and a second connecting mechanism, the first connecting mechanism and the second connecting mechanism are correspondingly arranged, one side of the first connecting mechanism is provided with a connecting piece, one side of the second connecting mechanism is provided with a holding mechanism, the holding mechanism is matched with the connecting piece, a locking assembly is arranged on the holding mechanism, the locking assembly is matched with the connecting piece, the locking assembly is detachably connected with an unlocking assembly, the unlocking assembly is arranged on one side of an upper shell, the upper shell is arranged on the outer side of the holding mechanism, and the upper shell is fixedly connected to the outer side wall of the first connecting mechanism. When the modular building primary-secondary structure is installed, the prefabricated first connecting mechanism and the second connecting mechanism are transported to the site, the first connecting mechanism and the second connecting mechanism are hoisted to complete the connection, no additional operation is needed, the modular building primary-secondary structure is convenient to disassemble, and the integrity of the first connecting mechanism and the second connecting mechanism is not damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of modular building connection nodes, in particular to a modular building sub-mother structure. BACKGROUND

[0002] Steel structure modular building system has full modular building system, giant frame modular building structure system, modular unit and core tube composite structure system, and modular unit and traditional frame structure hybrid system. The reliable connection between the modular unit and the lateral force resisting system is crucial to the stress performance of the entire modular steel structure building. The traditional connection generally adopts bolt connection or weld connection, but these two connection methods have some problems. The on-site bolt connection and weld connection can greatly increase the on-site workload and need to reserve the corresponding operation hole. Reserving too large operation space between the modular unit and the lateral force resisting system will affect the seismic performance of the overall structure. On the other hand, the traditional bolt connection and weld connection are difficult to ensure that the demolition is realized without damaging the integrity of the modular unit. Therefore, a modular building sub-mother structure is proposed. SUMMARY

[0003] The purpose of the present application is to provide a modular building sub-mother structure to solve the above problems.

[0004] To achieve the above purpose, the present application provides the following scheme:

[0005] A modular building sub-mother structure comprises a first connecting mechanism and a second connecting mechanism, the first connecting mechanism and the second connecting mechanism are correspondingly arranged, one side of the first connecting mechanism is provided with a connecting piece, one side of the second connecting mechanism is provided with a clamping mechanism, the clamping mechanism and the connecting piece are arranged on the same side, the clamping mechanism is matched with the connecting piece, a locking assembly is arranged on the clamping mechanism, the locking assembly is matched with the connecting piece, the locking assembly is detachably connected with an unlocking assembly, the unlocking assembly is arranged on one side of an upper shell, the upper shell is arranged on the outer side of the clamping mechanism, and the upper shell is fixedly connected to the outer side wall of the first connecting mechanism.

[0006] Preferably, the clamping mechanism comprises a lower supporting plate fixedly connected to one side of the second connecting mechanism, the top surface of the lower supporting plate is flush with the top end of the second connecting mechanism, an upper clamping block is slidably connected to the top surface of the lower supporting plate, an inclined slope is formed in the top surface of the upper clamping block, the inclined slope is close to the second connecting mechanism, two L-shaped clamping pieces are arranged on both sides of the upper clamping block, the openings of the two L-shaped clamping pieces are oppositely arranged, a distance is left between the two L-shaped clamping pieces, the L-shaped clamping pieces are rotatably connected to the top surface of the lower supporting plate, the upper clamping block is located inside the two L-shaped clamping pieces, and the locking assembly is arranged in the upper clamping block.

[0007] Preferably, the connecting piece comprises a T-shaped connecting block, the small end of the T-shaped connecting block is fixedly connected to one side of the first connecting mechanism, the bottom surface of the T-shaped connecting block is flush with the bottom end of the first connecting mechanism, the end of the T-shaped connecting block away from the first connecting mechanism is inserted between the two U-shaped clamping pieces, and the end of the T-shaped connecting block away from the first connecting mechanism is in abutment with the upper clamping block.

[0008] Preferably, a first sliding groove is formed in the lower support plate and penetrates through the lower support plate, a first sliding block is slidably connected in the first sliding groove, the bottom end of the first sliding block extends out of the first sliding groove and is fixedly connected with a first limiting plate, the top end of the first sliding block extends out of the first sliding groove and is fixedly connected with the upper clamping block, the first sliding block slides in a direction away from the side wall of the second connecting mechanism, one end of a first spring is fixedly connected to the side of the upper clamping block away from the second connecting mechanism, and the other end of the first spring is fixedly connected to the end of the first sliding groove away from the second connecting mechanism.

[0009] Preferably, a second sliding groove is horizontally formed in the upper clamping block, the second sliding groove is located on the slope, the locking assembly comprises a pin slidably connected in the second sliding groove, one end of the pin extends out of the second sliding groove and extends into a limiting hole, the limiting hole is formed in the end of the T-shaped connecting block away from the first connecting mechanism, the other end of the pin extends into a third sliding groove and is fixedly connected with a second sliding block, the third sliding groove is formed in the upper clamping block and communicates with the second sliding groove, the second sliding block is horizontally and slidably connected in the third sliding groove, one end of a first sliding rod is fixedly connected to the end of the second sliding block away from the pin, a second spring is sleeved on the outer side wall of the first sliding rod, the other end of the first sliding rod is slidably connected with a limiting ring, the limiting ring is fixedly connected to the opening of the third sliding groove, and the second spring is located between the limiting ring and the second sliding block.

[0010] Preferably, a fourth sliding groove is formed in one end of the first sliding rod extending out of the third sliding groove, the fourth sliding groove is arranged along the length direction of the first sliding rod, a connecting column is slidably connected in the fourth sliding groove, both ends of the connecting column extend out of the fourth sliding groove and are fixedly connected to the inner wall of a sleeve, the sleeve is slidably connected to the outer side of the first sliding rod, a magnetic ring is fixedly connected to the end of the sleeve close to the upper clamping block, the magnetic ring is slidably connected to the outer side of the first sliding rod, the magnetic ring is magnetically connected with the upper clamping block, a hook groove vertically formed in the end of the sleeve away from the upper clamping block, and the unlocking assembly is detachably connected with the hook groove.

[0011] Preferably, a through hole is formed on the side of the upper shell away from the first connecting mechanism, the unlocking assembly comprises a second sliding rod horizontally slidingly connected in the through hole, one end of the second sliding rod extends into the inner cavity of the upper shell and is fixedly connected with a hook, the hook is detachably connected in the hook slot, and the other end of the second sliding rod extends out of the upper shell and is fixedly connected with a pull ring.

[0012] Preferably, the end of the second sliding rod extending out of the upper shell is fixedly connected with a second limiting plate, a third spring is sleeved outside the second sliding rod, the third spring is located in the upper shell, and the two ends of the third spring abut against the hook and the inner side wall of the upper shell respectively.

[0013] Preferably, a limiting block is fixedly connected to the top surface of the lower supporting plate, and the limiting block is located on the side of the upper clamping block away from the second connecting mechanism.

[0014] The present application has the following technical effects:

[0015] The first connecting mechanism and the second connecting mechanism in the present application only need to be placed opposite to each other when being installed, the connecting piece enters the embracing mechanism, and then the locking assembly fixes and positions the embracing mechanism and the connecting piece; when the first connecting mechanism and the second connecting mechanism need to be disassembled, the locking of the connecting piece by the locking assembly can be released by pulling the unlocking assembly, and at this time, the first connecting mechanism and the second connecting mechanism can be conveniently separated.

[0016] The present application only needs to transport the prefabricated first connecting mechanism and the second connecting mechanism to the site when being installed, and the first connecting mechanism and the second connecting mechanism can be connected by being hoisted in a stacking manner, without additional operation, and the first connecting mechanism and the second connecting mechanism can be conveniently disassembled without damaging the original integrity. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0018] Figure 1 is a structural schematic view of the present application;

[0019] Figure 2 is Figure 1 a B-B sectional view in the

[0020] Figure 3 is Figure 1 a local enlarged view of A in the

[0021] Figure 4 is a top view of the second connecting mechanism in the application;

[0022] Figure 5 is a schematic view of the practical application of the application;

[0023] Wherein, 1, the first connecting mechanism; 2, the second connecting mechanism; 3, the lower support plate; 4, the upper shell; 5, the T-shaped connecting block; 6, the first limiting plate; 7, the first sliding block; 8, the first spring; 9, the upper clamping block; 10, the pin; 11, the second sliding block; 12, the second spring; 13, the first sliding rod; 14, the magnetic ring; 15, the sleeve; 16, the connecting column; 17, the hook; 18, the third spring; 19, the second sliding rod; 20, the second limiting plate; 21, the pull ring; 22, the U-shaped clamping member; 23, the limiting block; 24, the box-shaped module; 25, the frame. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be apparently and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0025] In order to make the above-mentioned purposes, features and advantages of the application more apparent and easy to understand, the application will be further described in detail below with reference to the drawings and specific embodiments.

[0026] Embodiment 1

[0027] With reference to Figures 1 to 4 , the embodiment provides a modular building primary and secondary structure, comprising: a first connecting mechanism 1 and a second connecting mechanism 2, the first connecting mechanism 1 and the second connecting mechanism 2 are correspondingly arranged, one side of the first connecting mechanism 1 is provided with a connecting piece, one side of the second connecting mechanism 2 is provided with a clamping mechanism, the connecting piece and the clamping mechanism are arranged on the same side, the clamping mechanism is matched with the connecting piece, a locking assembly is arranged on the clamping mechanism, the locking assembly is matched with the connecting piece, the locking assembly is detachably connected with an unlocking assembly, the unlocking assembly is arranged on one side of an upper shell 4, the upper shell 4 covers the outside of the clamping mechanism, and the upper shell 4 is fixedly connected to the outer side wall of the first connecting mechanism 1.

[0028] The first connecting mechanism 1 and the second connecting mechanism 2 in the application only need to be placed opposite to each other when being installed, the connecting piece enters the holding mechanism, and then the locking assembly limits and fixes the holding mechanism and the connecting piece; when the first connecting mechanism 1 and the second connecting mechanism 2 need to be disassembled, the locking of the connecting piece by the locking assembly can be released only by pulling the unlocking assembly, and at this time, the first connecting mechanism 1 and the second connecting mechanism 2 can be conveniently separated.

[0029] The application only needs to transport the prefabricated first connecting mechanism 1 and the second connecting mechanism 2 to the site when being installed, and the first connecting mechanism 1 and the second connecting mechanism 2 can be connected by being hoisted in a stacked manner, without additional operation, and the first connecting mechanism 1 and the second connecting mechanism 2 can be conveniently disassembled without damaging the original integrity.

[0030] Further optimization scheme, the holding mechanism includes a lower support plate 3 fixed on one side of the second connecting mechanism 2, the top surface of the lower support plate 3 is flush with the top end of the second connecting mechanism 2, the top surface of the lower support plate 3 is slidably connected with an upper clamping block 9, a slope is formed on the top surface of the upper clamping block 9, the slope is close to the second connecting mechanism 2, two L-shaped holding pieces 22 are arranged on the two sides of the upper clamping block 9, the openings of the two L-shaped holding pieces 22 are oppositely arranged, a distance is left between the two L-shaped holding pieces 22, the middle part of the L-shaped holding piece 22 is rotatably connected to the top surface of the lower support plate 3, the upper clamping block 9 is located inside the two L-shaped holding pieces 22, and the locking assembly is arranged in the upper clamping block 9.

[0031] When being installed, the first connecting mechanism 1 drives the connecting piece to descend, the connecting piece abuts against the slope, at this time, the upper clamping block 9 moves away from the second connecting mechanism 2 under the action of the connecting piece, and drives the two L-shaped holding pieces 22 to rotate, when the connecting piece is separated from the slope, the upper clamping block 9 moves to the limit position, at this time, the openings of the two L-shaped holding pieces 22 are opposite to each other, and a gap is left between the end of the L-shaped holding piece 22 close to the second connecting mechanism 2 and the upper clamping block 9, the connecting piece falls into the gap, so that the holding action is realized.

[0032] Further optimization scheme, the connecting piece includes a T-shaped connecting block 5, the small end of the T-shaped connecting block 5 is fixed on one side of the first connecting mechanism 1, the bottom surface of the T-shaped connecting block 5 is flush with the bottom end of the first connecting mechanism 1, the end of the T-shaped connecting block 5 away from the first connecting mechanism 1 is inserted between the two L-shaped holding pieces 22, and the end of the T-shaped connecting block 5 away from the first connecting mechanism 1 abuts against the upper clamping block 9. The large end of the T-shaped connecting block 5 falls into the gap between the L-shaped holding piece 22 and the upper clamping block 9, so that the holding action is realized.

[0033] Further optimization scheme, the first sliding groove is set through the lower support plate 3, the first sliding block 7 is slidably connected in the first sliding groove, the bottom end of the first sliding block 7 extends out of the first sliding groove and is fixedly connected with the first limiting plate 6, the top end of the first sliding block 7 extends out of the first sliding groove and is fixedly connected with the upper clamping block 9, the first sliding block 7 slides in the direction away from the side wall of the second connecting mechanism 2, one end of the first spring 8 is fixedly connected to the side of the upper clamping block 9 away from the second connecting mechanism 2, and the other end of the first spring 8 is fixedly connected to the end of the first sliding groove away from the second connecting mechanism 2. The upper clamping block 9 is slidably connected to the top surface of the lower support plate 3 through the first sliding block 7, the first limiting plate 6 prevents the upper clamping block 9 from being separated from the lower support plate 3, and the first spring 8 drives the upper clamping block 9 to reset.

[0034] Further optimization scheme, the second sliding groove is set horizontally on the upper clamping block 9, the second sliding groove is located on the slope, the locking assembly comprises a pin 10 slidably connected in the second sliding groove, one end of the pin 10 extends out of the second sliding groove and extends into the limiting hole, the limiting hole is formed in the end of the T-shaped connecting block 5 away from the first connecting mechanism 1, the other end of the pin 10 extends into the third sliding groove and is fixedly connected with the second sliding block 11, the third sliding groove is formed in the upper clamping block 9 and communicates with the second sliding groove, the second sliding block 11 is slidably connected in the third sliding groove, one end of the second sliding block 11 away from the pin 10 is fixedly connected with the first sliding rod 13, the second spring 12 is sleeved on the outer side wall of the first sliding rod 13, the other end of the first sliding rod 13 away from the second sliding block 11 is slidably connected with the limiting ring, the limiting ring is fixedly connected to the opening of the third sliding groove, and the second spring 12 is located between the limiting ring and the second sliding block 11. When the T-shaped connecting block 5 is lowered, it first abuts against the slope on the top surface of the pin 10, at this time, the pin 10 is retracted into the second sliding groove under the action of the T-shaped connecting block 5, when the T-shaped connecting block 5 falls in the gap between the two U-shaped clamping members 22 and the upper clamping block 9, at this time, the second spring 12 drives the first sliding rod 13 to slide in the third sliding groove, so that the end of the pin 10 extending out of the second sliding groove is pushed into the limiting hole, and the limiting of the T-shaped connecting block 5 is completed; when disassembling, the first sliding rod 13 is pulled through the unlocking assembly, so that the pin 10 is separated from the limiting hole.

[0035] Further optimization scheme, one end of the first slide rod 13 extending out of one end of the third sliding groove is provided with a fourth sliding groove, the fourth sliding groove is arranged along the length direction of the first slide rod 13, a connecting column 16 is slidably connected in the fourth sliding groove, both ends of the connecting column 16 extend out of the fourth sliding groove and are fixedly connected to the inner wall of the sleeve 15, the sleeve 15 is slidably connected to the outer side of the first slide rod 13, one end of the sleeve 15 close to the upper clamping block 9 is fixedly connected with a magnetic ring 14, the magnetic ring 14 is slidably connected to the outer side of the first slide rod 13, the magnetic ring 14 is magnetically connected with the upper clamping block 9, one end of the sleeve 15 away from the upper clamping block 9 is provided with a vertically arranged hook groove, and the unlocking assembly is detachably connected with the hook groove. In this way, the sleeve 15 is adsorbed on the upper clamping block 9 through the magnetic ring 14, and the first slide rod 13 will not affect the sleeve 15 when sliding in the third sliding groove, facilitating the positioning connection between the unlocking assembly and the sleeve 15.

[0036] Further optimization scheme, one end of the first slide rod 13 extending out of one end of the third sliding groove is provided with a fourth sliding groove, the fourth sliding groove is arranged along the length direction of the first slide rod 13, a connecting column 16 is slidably connected in the fourth sliding groove, both ends of the connecting column 16 extend out of the fourth sliding groove and are fixedly connected to the inner wall of the sleeve 15, the sleeve 15 is slidably connected to the outer side of the first slide rod 13, one end of the sleeve 15 close to the upper clamping block 9 is fixedly connected with a magnetic ring 14, the magnetic ring 14 is slidably connected to the outer side of the first slide rod 13, the magnetic ring 14 is magnetically connected with the upper clamping block 9, one end of the sleeve 15 away from the upper clamping block 9 is provided with a vertically arranged hook groove, and the unlocking assembly is detachably connected with the hook groove. In this way, the sleeve 15 is adsorbed on the upper clamping block 9 through the magnetic ring 14, and the first slide rod 13 will not affect the sleeve 15 when sliding in the third sliding groove, facilitating the positioning connection between the unlocking assembly and the sleeve 15.

[0037] Further optimization scheme, one end of the first slide rod 13 extending out of one end of the third sliding groove is provided with a fourth sliding groove, the fourth sliding groove is arranged along the length direction of the first slide rod 13, a connecting column 16 is slidably connected in the fourth sliding groove, both ends of the connecting column 16 extend out of the fourth sliding groove and are fixedly connected to the inner wall of the sleeve 15, the sleeve 15 is slidably connected to the outer side of the first slide rod 13, one end of the sleeve 15 close to the upper clamping block 9 is fixedly connected with a magnetic ring 14, the magnetic ring 14 is slidably connected to the outer side of the first slide rod 13, the magnetic ring 14 is magnetically connected with the upper clamping block 9, one end of the sleeve 15 away from the upper clamping block 9 is provided with a vertically arranged hook groove, and the unlocking assembly is detachably connected with the hook groove. In this way, the sleeve 15 is adsorbed on the upper clamping block 9 through the magnetic ring 14, and the first slide rod 13 will not affect the sleeve 15 when sliding in the third sliding groove, facilitating the positioning connection between the unlocking assembly and the sleeve 15.

[0038] Further optimization scheme, the top surface of the lower support plate 3 is fixedly connected with a limiting block 23, and the limiting block 23 is located on the side of the upper clamping block 9 away from the second connecting mechanism 2. In this way, the movement distance of the upper clamping block 9 is prevented from being too large, so that the T-shaped connecting block 5 cannot be inserted into the gap between the T-shaped connecting block 5 and the upper clamping block 9, and the connection fails.

[0039] Embodiment 2

[0040] Refer to Figure 5 , Figure 5For a practical application of the device, the first connecting mechanism 1 and the second connecting mechanism 2 are horizontally arranged, the first connecting mechanism 1 is fixedly connected to the box-shaped module 24, the side wall of the box-shaped module 24 is fixedly connected to the side wall of the upper shell 4 away from the opening, the second connecting mechanism 2 is fixedly connected to the frame 25, and the first connecting mechanism 1 and the second connecting mechanism 2 adjacent to each other are connected through the connecting piece and the embracing mechanism, so as to connect the box-shaped module 24 and the frame 25 together.

[0041] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0042] The above-described embodiments are only descriptions of the preferred modes of the present application and do not limit the scope of the present application. Various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A modular building sub-mother structure comprising: First connecting mechanism (1) and second connecting mechanism (2), the first connecting mechanism (1) and the second connecting mechanism (2) are correspondingly arranged, characterized by, one side of the first connecting mechanism (1) is provided with a connecting piece, one side of the second connecting mechanism (2) is provided with a clamping mechanism, the connecting piece and the clamping mechanism are provided on the same side, the clamping mechanism is matched with the connecting piece, a locking assembly is arranged on the clamping mechanism, the locking assembly is matched with the connecting piece, the locking assembly is detachably connected with an unlocking assembly, the unlocking assembly is arranged on one side of the upper shell (4), the upper shell (4) covers the outside of the clamping mechanism, and the upper shell (4) is fixedly connected to the outer side wall of the first connecting mechanism (1); The clamping mechanism comprises a lower supporting plate (3) fixedly connected to one side of the second connecting mechanism (2), the top surface of the lower supporting plate (3) is flush with the top end of the second connecting mechanism (2), the top surface of the lower supporting plate (3) is slidably connected with an upper clamping block (9), a slope is formed in the top surface of the upper clamping block (9), the slope is close to the second connecting mechanism (2), two L-shaped clamping pieces (22) are arranged on the two sides of the upper clamping block (9), the openings of the two L-shaped clamping pieces (22) are oppositely arranged, and a distance is left between the two L-shaped clamping pieces (22), the middle of the L-shaped clamping piece (22) is rotatably connected to the top surface of the lower supporting plate (3), the upper clamping block (9) is located inside the two L-shaped clamping pieces (22), and the locking assembly is arranged in the upper clamping block (9); The connecting piece comprises a T-shaped connecting block (5), the small end of the T-shaped connecting block (5) is fixedly connected to one side of the first connecting mechanism (1), the bottom surface of the T-shaped connecting block (5) is flush with the bottom end of the first connecting mechanism (1), the end of the T-shaped connecting block (5) away from the first connecting mechanism (1) is inserted between the two L-shaped clamping pieces (22), and the end of the T-shaped connecting block (5) away from the first connecting mechanism (1) is abutted with the upper clamping block (9); A first sliding groove is formed in the lower supporting plate (3), and a first sliding block (7) is slidably connected in the first sliding groove; The upper clamping block (9) is provided with a horizontally arranged second sliding groove, and the second sliding groove is located on the slope; the locking assembly comprises a pin (10) which is slidingly connected in the second sliding groove, one end of the pin (10) extends out of the second sliding groove and extends into a limiting hole, the limiting hole is arranged at the end of the T-shaped connecting block (5) away from the first connecting mechanism (1), the other end of the pin (10) extends into a third sliding groove, the third sliding groove is arranged in the upper clamping block (9) and communicates with the second sliding groove, the second sliding block (11) is slidingly connected in the third sliding groove, one end of the second sliding block (11) away from the pin (10) is fixedly connected with a first sliding rod (13), a second spring (12) is arranged on the outer side wall of the first sliding rod (13), the other end of the first sliding rod (13) away from the second sliding block (11) is slidingly connected with a limiting ring, and the limiting ring is fixedly connected at the opening of the third sliding groove; the second spring (12) is located between the limiting ring and the second sliding block (11).

2. A modular building sub- and superstructure according to claim 1, characterized in that: The bottom end of the first sliding block (7) extends out of the first sliding groove and is fixedly connected with a first limiting plate (6), the top end of the first sliding block (7) extends out of the first sliding groove and is fixedly connected with the upper clamping block (9), the first sliding block (7) slides away from the side wall of the second connecting mechanism (2), one end of the first spring (8) is fixedly connected to the side of the upper clamping block (9) away from the second connecting mechanism (2), and the other end of the first spring (8) is fixedly connected to the end of the first sliding groove away from the second connecting mechanism (2).

3. A modular building sub- and superstructure according to claim 1, characterized in that: One end of the first sliding rod (13) extending out of the third sliding groove is provided with a fourth sliding groove, the fourth sliding groove is arranged along the length direction of the first sliding rod (13), a connecting column (16) is slidingly connected in the fourth sliding groove, both ends of the connecting column (16) extend out of the fourth sliding groove and are fixedly connected to the inner wall of a sleeve (15), the sleeve (15) is slidingly connected to the outer side of the first sliding rod (13), a magnetic ring (14) is fixedly connected to the end of the sleeve (15) close to the upper clamping block (9), the magnetic ring (14) is slidingly connected to the outer side of the first sliding rod (13), the magnetic ring (14) is magnetically connected with the upper clamping block (9), a hook groove vertically arranged is formed in the end of the sleeve (15) away from the upper clamping block (9), and the unlocking assembly is detachably connected with the hook groove.

4. A modular building sub- and superstructure according to claim 3, wherein: A through hole is formed in the side of the upper shell (4) away from the first connecting mechanism (1), the unlocking assembly comprises a second sliding rod (19) which is slidingly connected in the through hole, one end of the second sliding rod (19) extends into the inner cavity of the upper shell (4) and is fixedly connected with a hook (17), the hook (17) is detachably connected in the hook groove, and the other end of the second sliding rod (19) extends out of the upper shell (4) and is fixedly connected with a pull ring (21).

5. A modular building sub- and superstructure according to claim 4, characterised in that: One end of the second slide rod (19) extending out of the upper shell (4) is fixedly connected with a second limiting plate (20), the outer side of the second slide rod (19) is sleeved with a third spring (18), the third spring (18) is located in the upper shell (4), and the two ends of the third spring (18) respectively abut against the hook (17) and the inner side wall of the upper shell (4).

6. The modular building sub- and superstructure according to claim 1, characterized in that: The top surface of the lower supporting plate (3) is fixedly connected with a limiting block (23), and the limiting block (23) is located on the side, away from the second connecting mechanism (2), of the upper clamping block (9).

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