Modular building unit structure

Abstract

The utility model discloses a modular building unit structure, including left connecting piece, right connecting piece and middle connecting piece, left and right connecting piece is L type, and the short side of L type is equipped with threaded hole, and the long side of L type is equipped with first via hole and steel wire via hole, the middle connecting piece is U type, and the surface is equipped with corresponding through -hole. Two building unit structures are 180 degrees overturning and central symmetry, and are primarily connected through the bolt, and then are enhanced in structure through the mode that steel wire rope passes through steel wire via hole, and there is height difference among adjacent steel wire via holes. The locking structure in the cavity of middle connecting piece contains spin nut, compensation spring and clamping device, and the clamping device is semicircular metal ring with external thread and pointed end spur. When installing, after bolt connection, steel wire rope is fixed through locking structure, and compensation spring is compressed to make steel wire rope inclined pull, provide pre -tightening force, improve overall strength and impact resistance.

Description

Technical Field

[0001] This utility model relates to a modular building unit structure. Background Technology

[0002] With the rapid development of the construction industry, modular buildings have been widely used in residential, commercial, and temporary facilities due to their advantages such as high construction efficiency, low cost, and good environmental performance. Modular buildings are typically assembled from multiple prefabricated building units through connecting structures. The reliability and stability of these connecting structures directly affect the safety and service life of the entire building.

[0003] In existing technologies, there are various ways to connect modular building units, such as bolted connections, welded connections, and pin connections. However, these connection methods have certain limitations: bolted connections are prone to loosening during long-term use, leading to a decrease in connection strength; although welded connections have high strength, they are difficult to construct and not conducive to later disassembly and maintenance; pin-connected structures have weak impact resistance and are prone to deformation or damage when subjected to external forces.

[0004] Furthermore, most existing connection structures can only achieve fastening in one direction, making it difficult to provide stable preload in multiple dimensions. This results in insufficient overall stiffness of modular buildings, compromising their safety in extreme environments such as earthquakes and strong winds. Therefore, developing a modular building unit structure that is reliable in connection, high in strength, highly impact-resistant, and easy to install and maintain is of great significance. Utility Model Content

[0005] The purpose of this invention is to solve the problems of insufficient connection strength, weak impact resistance, difficulty in controlling preload, and inconvenience in installation and maintenance in the existing technology, and to provide a modular building unit structure.

[0006] A modular building unit structure, wherein a single building unit structure includes a left connector, a right connector, and a middle connector;

[0007] The left and right connectors are both L-shaped structures. The short side of the L-shaped structure is provided with a threaded hole, and the long side of the L-shaped structure is provided with a first through hole and a steel wire through hole. The middle connector is a U-shaped structure, and the surface of the middle connector is provided with through holes corresponding to the first through hole and the steel wire through hole.

[0008] The two adjacent building unit structures are rotated 180 degrees apart. The right connector of the first building unit structure is in contact with the left connector of the second building unit structure, and the two are centrally symmetrical. The two building unit structures are initially fixed together by bolts and pre-tensioned by steel wire ropes.

[0009] The steel wire rope passes through the steel wire through holes in multiple building unit structures in sequence, and there is a height difference between the steel wire through holes between two adjacent building unit structures; in the cavity of each connecting piece, a single steel wire rope is fitted with two locking structures on the left and right, and the locking structure is fixed to a certain point on the steel wire rope, and the steel wire rope is tightened between two adjacent building unit structures by tension.

[0010] Furthermore, the locking structure includes a self-spinning nut, a compensating spring, and a clamping device. The clamping device consists of two semi-circular metal rings with external threads on their surfaces. The outer diameter of the metal rings gradually increases along the tightening direction of the self-spinning nut. Several pointed spikes are provided on the inner wall of the metal rings, which are used to securely connect with the surface of the wire rope. The pointed spikes on the inner wall can penetrate the gaps on the surface of the wire rope, further enhancing friction through mechanical engagement and preventing the wire rope from slipping under stress. The compensating spring stores elastic potential energy during the tightening of the self-spinning nut, continuously applying pressure to the metal rings to ensure that the clamping device and the wire rope are not affected by vibration, temperature changes, or other factors.

[0011] Furthermore, the number of threaded holes on the short side is 2-4, and they are evenly distributed along the length of the short side. The number of the first through holes matches the number of threaded holes, and their positions correspond one-to-one. By setting multiple threaded holes, the connection load is evenly distributed among each bolt, and the shear force and tensile force between adjacent units are dispersed to multiple bolts, reducing the stress on a single bolt.

[0012] Furthermore, the height difference of the wire through-holes between two adjacent building units is 5-15mm, and the height difference alternates along the extension direction of the wire rope. This design enhances the structure's resistance to lateral displacement. Under horizontal loads such as earthquakes and strong winds, energy is absorbed through the elastic deformation of the wire rope, reducing the overall structural sway and improving the seismic and wind resistance of modular buildings.

[0013] Furthermore, the inner wall of the spin nut is provided with an internal thread that matches the external thread of the metal ring, and one end of the spin nut is provided with an annular boss for abutting the compensating spring. The annular boss provides a stable force support point for the compensating spring, preventing the spring from shifting or tilting during compression or rebound, and ensuring that the spring force can act perpendicularly on the metal ring.

[0014] Furthermore, the width of the central connector matches the long side width of the left and right connectors, and the inner wall of the central connector is coated with an anti-corrosion coating with a thickness of 0.1-0.3mm. This anti-corrosion coating extends the service life of the central connector, especially in harsh environments such as humid and rainy conditions, preventing a decrease in structural strength due to corrosion. This allows the central connector to both provide stable support as a connecting carrier and resist environmental erosion, thus improving the durability of modular buildings.

[0015] Furthermore, the wire rope adopts a multi-strand stranded structure with a diameter of 6-10mm, and the surface of the wire rope is coated with a galvanized layer with a thickness of 50-100μm. Compared with a single wire, it can withstand greater tensile force, and the stranded structure allows the wire rope to bend within a certain range, adapting to angle changes during oblique pulling.

[0016] Furthermore, the ratio of the length of the long side to the short side of the left and right connecting members is 2-3:1. The short side mainly serves as lateral support; its shorter length reduces material consumption and ensures that it can quickly embed itself into the corresponding position when connected to adjacent units, thus improving installation efficiency.

[0017] Furthermore, the concave portion of the connecting member is provided with a rounded transition. This rounded transition disperses stress at right-angle corners to the curved surface, preventing cracks or fractures caused by excessive localized stress.

[0018] Beneficial effects:

[0019] This invention significantly improves the connection reliability and structural strength of modular building units through a dual connection method combining bolted connections and wire rope diagonal fastening. Bolts provide initial fixation for adjacent units, while the wire rope passes through wire through holes with height differences to form a diagonal tension. Combined with the self-rotating nut, compensating spring, and clamping device with pointed spikes in the locking structure, it stably provides preload, effectively resisting external impacts, preventing loosening of connections, and enhancing the overall building's resistance to deformation.

[0020] Meanwhile, this structure boasts advantages such as convenient installation and high durability. The connectors are highly adaptable, requiring no complex equipment during installation; splicing and locking can be completed with simple operations. The compensating spring automatically compensates for preload loss caused by wire rope slack. Its modular design allows for flexible combination, adapting to various building scenarios, combining practicality and adaptability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the connection between two adjacent units in a modular building unit structure.

[0022] Figure 2 This is a schematic diagram of the shape of the wire rope between two adjacent units;

[0023] Figure 3 This is a cross-sectional view of the steel wire rope.

[0024] Figure 4 This is a schematic diagram showing the connection of the self-rotating nut, clamping device, and compensating spring.

[0025] Figure 5 This is a schematic diagram of the structure of a single monomer;

[0026] 1. Left connector, 2. Middle connector, 3. First through hole, 4. Threaded hole, 5. Wire rope, 6. Bolt, 7. Self-rotating nut, 8. Compensating spring, 9. Clamping device, 10. Arc transition, 11. Wire through hole. Detailed Implementation

[0027] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0028] like Figure 1-5 As shown, a modular building unit structure includes a left connector 1, a right connector and a middle connector 2.

[0029] Both the left connector 1 and the right connector are L-shaped structures, each including a long side and a short side, with a length ratio of 2.5:1. The groove of the middle connector has an arc transition 10. The side of the short side has two threaded holes 4, evenly distributed along the length of the short side; the surface of the long side has two first through holes 3 and two wire through holes 11, with the positions of the first through holes 3 and the threaded holes 4 corresponding one-to-one.

[0030] The middle connector 2 has a U-shaped structure, and the opening width matches the long side width of the left connector 1 and the right connector. The surface of the middle connector 2 is provided with through holes corresponding to the first through hole 3 and the wire through hole 11, and the inner wall is provided with a 0.2mm thick anti-corrosion coating. The recess of the U-shaped structure forms the operating space for operating the bolt 6 and the self-rotating nut 7.

[0031] Two adjacent building unit structures are connected by bolts 6 and steel wire ropes 5. The two adjacent building unit structures are rotated 180 degrees, and the right connector of the first building unit structure is in contact with the left connector 1 of the second building unit structure, and the two are centrally symmetrical.

[0032] The wire rope 5 has a multi-strand stranded structure, a diameter of 8mm, and a galvanized layer with a thickness of 70μm on its surface. The wire rope 5 passes through the wire through holes 11 in multiple building unit structures in sequence. The height difference of the wire through holes 11 between two adjacent building unit structures is 10mm, and the height difference alternates along the extension direction of the wire rope 5.

[0033] Within the cavity of each connecting member 2, two locking structures are fitted onto a single steel wire rope 5. Each locking structure includes a self-rotating nut 7, a compensating spring 8, and a clamping device 9. The clamping device 9 consists of two semi-circular metal rings made of high-strength alloy steel. The surfaces of the metal rings have external threads, and the outer diameter of the metal rings gradually increases along the tightening direction of the self-rotating nut 7. Several pointed protrusions are provided on the inner wall of the metal rings, and these protrusions are integrally formed with the metal rings. The inner wall of the self-rotating nut 7 has internal threads that match the external threads of the metal rings, and one end of the self-rotating nut 7 has an annular boss for abutting against the compensating spring 8.

[0034] During installation, the two building unit structures are joined together by rotating them so that the right connector of the first building unit structure contacts the left connector 1 of the second building unit structure and is centrally symmetrical. Then, a bolt 6 is passed through the first through hole 3 in the first building unit structure and screwed into the threaded hole 4 in the second building unit structure, thus achieving the initial connection between the two building unit structures.

[0035] Next, the steel wire rope 5 is passed sequentially through the wire through holes 11 of the two building unit structures. Two locking structures are fitted onto each steel wire rope 5 within the cavity of each connecting piece 2. By rotating the self-rotating nut 7, it is tightened along the external thread of the metal ring, pressing the clamping device 9 inward. The pointed protrusions of the inner wall of the metal ring pierce the surface of the steel wire rope 5, completing the fixed connection between the locking device and the steel wire rope 5. Continuing to rotate the self-rotating nut 7 compresses the compensating spring 8, and the elastic force of the compensating spring 8 straightens the steel wire rope 5. Due to the height difference between the wire through holes 11 in the two adjacent building unit structures, the straightened portion of the steel wire rope 5 is always in a diagonal tension state, maintaining an upward diagonal tension to provide preload for the two adjacent building unit structures.

[0036] During use, the compensating spring 8 automatically compensates for the preload loss caused by the slack in the wire rope 5, ensuring the stability of the connection structure. When maintenance or replacement of parts is required, simply rotate the self-rotating nut 7 in the opposite direction to loosen the clamping device 9, and the wire rope 5 can be removed for the corresponding operation. The operation is simple and quick.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular building unit structure, characterized in that, A single building unit structure includes a left connector, a right connector, and a middle connector; The left and right connectors are both L-shaped structures. The short side of the L-shaped structure is provided with a threaded hole, and the long side of the L-shaped structure is provided with a first through hole and a steel wire through hole. The middle connector is a U-shaped structure, and the surface of the middle connector is provided with through holes corresponding to the first through hole and the steel wire through hole. The two adjacent building unit structures are rotated 180 degrees apart. The right connector of the first building unit structure is in contact with the left connector of the second building unit structure, and the two are centrally symmetrical. The two building unit structures are initially fixed together by bolts and pre-tensioned by steel wire ropes. The steel wire rope passes through the steel wire through holes in multiple building unit structures in sequence, and there is a height difference between the steel wire through holes between two adjacent building unit structures; in the cavity of each connecting piece, a single steel wire rope is fitted with two locking structures on the left and right, and the locking structure is fixed to a certain point on the steel wire rope, and the steel wire rope is tightened between two adjacent building unit structures by tension.

2. The modular building unit structure according to claim 1, characterized in that, The locking structure includes a self-spinning nut, a compensating spring, and a clamping device; the clamping device consists of two semi-circular metal rings with external threads on their surfaces; and the outer diameter of the metal rings gradually increases along the tightening direction of the self-spinning nut; the inner wall of the metal rings is provided with several pointed protrusions, which are used to securely connect with the surface of the wire rope.

3. A modular building unit structure according to claim 2, characterized in that, The number of threaded holes on the short side is 2-4, and they are evenly distributed along the length of the short side. The number of the first through holes matches the number of threaded holes, and their positions correspond one-to-one.

4. A modular building unit structure according to claim 2, characterized in that, The height difference of the wire through-hole between two adjacent building unit structures is 5-15mm, and the height difference alternates along the extension direction of the wire rope.

5. A modular building unit structure according to claim 2, characterized in that, The inner wall of the spin nut is provided with an internal thread that matches the external thread of the metal ring, and one end of the spin nut is provided with an annular boss for abutting against the compensating spring.

6. A modular building unit structure according to claim 2, characterized in that, The width of the middle connector matches the width of the long side of the left and right connectors, and the inner wall of the middle connector is provided with an anti-corrosion coating with a thickness of 0.1-0.3mm.

7. A modular building unit structure according to claim 2, characterized in that, The wire rope adopts a multi-strand stranded structure, has a diameter of 6-10mm, and has a galvanized layer on its surface with a thickness of 50-100μm.

8. A modular building unit structure according to claim 2, characterized in that, The ratio of the length of the long side to the length of the short side of the left and right connectors is 2-3:

1.

9. A modular building unit structure according to claim 2, characterized in that, The inner recess of the connecting piece is provided with an arc transition.

Images