Prefabricated wallboard assembly structure and assembly method thereof

Abstract

The invention discloses a prefabricated wallboard assembly structure and an assembly method thereof, and relates to the technical field of building prefabricated wallboards, the prefabricated wallboard assembly structure comprises a first wallboard and a second wallboard, a plurality of inserting grooves are formed in one side of the first wallboard, and hydraulic expansion splicing mechanisms are symmetrically mounted in the inserting grooves up and down; the hydraulic expansion splicing mechanism is composed of a metal sleeve, meshing teeth, a sealing rubber ring, a piston and an oil injection mechanism, the metal sleeve and the inserting groove are welded and fixed, an oil cavity is formed in the metal sleeve, multiple sets of mounting grooves are formed in one end of the metal sleeve, four annularly-distributed sliding grooves are formed in the outer sides of the mounting grooves, and the sliding grooves are communicated with the oil cavity. A plurality of inserting blocks are arranged on one side of the second wallboard, connecting holes are formed in the inserting blocks in an up-down symmetrical mode, a plurality of meshing grooves are formed in the inner ends of the connecting holes, and the problem that most existing prefabricated wallboards are connected through bolts, stress concentration is prone to occurring, and consequently the structural stability is reduced is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building prefabricated wall panels, in particular to a prefabricated wall panel assembly structure and an assembly method thereof. Background Art

[0002] With the rapid development of building industrialization, prefabricated wall panels are widely used due to their high construction efficiency and stable quality. Existing prefabricated wall panel assembly structures mostly use bolt connections, welding, or simple mortise and tenon joints. These connection methods have problems such as low assembly precision, complex construction, and insufficient seismic performance. Furthermore, some connection methods make it difficult to reuse components, which is not conducive to the development of green buildings.

[0003] For example, the Chinese authorized patent "A prefabricated wall panel combined assembly structure" with announcement number CN213014785U includes a mounting frame fixedly installed on the side of the wall, and multiple bottom support plates and top fixing plates are fixedly provided on the side of the mounting frame. There is an installation space between the bottom support plates and the top fixing plates used in pairs, and multiple wall panel modules are arranged in the installation space. The multiple wall panel modules located in the same installation space are connected end to end. One side wall of the wall panel module extends outward and has two trapezoidal ridges with trapezoidal cross-sections. The other side wall of the wall panel module is provided with two trapezoidal grooves with trapezoidal cross-sections. Among the two adjacent wall panel modules, the trapezoidal ridges of one wall panel module can be paired and inserted into the trapezoidal grooves of the other wall panel module to realize the snap connection between the two adjacent wall panel modules.

[0004] While the aforementioned existing technologies can achieve the basic connection function of prefabricated wall panels, traditional assembly methods have numerous drawbacks. Welding and grouting connections not only pollute the environment but also increase the amount of construction waste generated. Bolted connections also experience stress concentration, which can reduce structural stability. Furthermore, rotating bolts individually is time-consuming, impacting construction efficiency. Therefore, these methods do not meet existing requirements. Therefore, we propose a prefabricated wall panel assembly structure and assembly method. Summary of the Invention

[0005] The object of the present invention is to provide a prefabricated wall panel assembly structure and an assembly method thereof, so as to solve the problem raised in the above background art that most existing prefabricated wall panels are connected by bolts and are prone to stress concentration, resulting in reduced structural stability.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: A prefabricated wall panel assembly structure includes a first wall panel and a second wall panel, wherein a plurality of plug-in slots are provided on one side of the first wall panel, and a hydraulic expansion and splicing mechanism is symmetrically installed in the upper and lower parts of the plug-in slots, and the hydraulic expansion and splicing mechanism is composed of a metal sleeve, a bite tooth, a sealing rubber ring, a piston and an oil injection mechanism, wherein the metal sleeve is welded and fixed to the plug-in slot, an oil chamber is provided in the interior of the metal sleeve, and the piston is slidably arranged in the oil chamber, a plurality of mounting slots are provided at one end of the metal sleeve, and the sealing rubber ring is sealed in the interior of the mounting slot, four annularly distributed sliding grooves are provided on the outside of the mounting slot, the bite tooth is slidably installed in the interior of the slide groove, and the inner side of the bite tooth is fixed to the sealing rubber ring, a plurality of plug-in blocks are provided on one side of the second wall panel, and the plug-in blocks are snap-fitted with the plug-in slots, connecting holes are symmetrically provided in the upper and lower parts of the plug-in blocks, and the connecting holes are plug-fitted with the metal sleeve, a plurality of bite grooves are provided at the inner end of the connecting hole, and the bite teeth are snap-fitted with the bite grooves.

[0007] Preferably, a through hole is provided between the oil filling mechanism and the metal sleeve, and the through hole is connected to the oil chamber, a fixing plate is fixed at the middle position of the oil filling mechanism, and a center hole of a conical structure is provided at the center position of the fixing plate, a sealing plug of a conical structure is provided on the inner side of the center hole of the fixing plate, an elastic support mechanism is installed between the sealing plug and the metal sleeve, an oil filling hole is provided on one side of the oil filling mechanism, an oil filling nozzle is provided at the front end of the first wall panel, the oil filling nozzle is connected to the oil filling hole, and the oil filling nozzle is used to connect to an external oil pump pipeline.

[0008] Preferably, the elastic support mechanism consists of a fixed column, a movable column that slides and limits with the fixed column, and a spring installed between the fixed column and the movable column. One end of the fixed column is fixed to the metal sleeve, and one end of the movable column is fixed to the sealing plug.

[0009] Preferably, a positioning mechanism is provided at the middle position of the plug-in slot, and the positioning mechanism includes a limit slot provided on the inner side of the plug-in slot, and movable plates with sliding limits are symmetrically installed above and below the limit slot, and one end of the movable plate extends to the inside of the plug-in slot, and a positioning block is integrally formed at one end of the movable plate, and one end of the positioning block is in an inclined structure, and support springs are installed on both sides between the upper and lower movable plates, and a card slot is provided at the middle position of the plug-in block, and the positioning slot consists of a guide slot and a card slot, and the guide slot is used to squeeze the positioning card block to make the movable plate enter, and the positioning card block cooperates with the support spring to be engaged with the card slot.

[0010] Preferably, a gear is rotatably installed at the center position of the front end of the limiting groove, and rack plates with staggered distribution are provided on both sides of the gear. The side surfaces of the rack plates are slidably limited with the first wall panel, and the rack plates are meshed with the gears, and one end faces of the two rack plates are respectively fixed to the upper and lower movable plates.

[0011] Preferably, an adjusting wheel is further provided at the front end of the first wall panel, the adjusting wheel is rotatably connected to the first wall panel, and a shaft at one end of the adjusting wheel is connected to the shaft of the gear.

[0012] Preferably, a friction damper is provided between the second wall panel and the plug-in block, and two ends of the friction damper are respectively fixed to the second wall panel and the plug-in block by bolts.

[0013] Preferably, an exhaust hole is provided at the end of the metal sleeve.

[0014] Preferably, the contact surfaces of the first wall panel and the second wall panel are both provided with anti-friction rubber linings.

[0015] The assembly method of the prefabricated wall panel assembly structure comprises the following steps: Step 1: dock the first wall panel and the second wall panel so that the plug-in slot is aligned with the plug-in block. During the docking process, since the positioning block is inclined, when it contacts the guide groove of the positioning slot, the guide groove squeezes the positioning block, causing the two positioning blocks to synchronously move toward the center, thereby smoothly docking the plug-in slot and the plug-in block. Step 2: When the insertion slot and the insertion block are fully engaged, the positioning block extends into the interior of the slot. At this time, the positioning block loses the squeeze of the guide groove and, under the action of the support spring, the positioning block is synchronously separated, achieving a stable connection between the slot and the positioning block, completing the preliminary locking of the first wall panel and the second wall panel; Step 3: Connect the external pressure pump to the oil filling nozzle of the hydraulic expansion splicing mechanism through the hydraulic oil pipe, start the external pressure pump, and allow the hydraulic oil to enter the oil filling mechanism from the oil filling hole. The hydraulic oil exerts pressure on the sealing plug through the through hole in the center of the fixed plate, causing the elastic support mechanism to contract. The hydraulic oil is able to pass through the center hole and enter the oil chamber of the metal sleeve through the through hole to squeeze the piston. As the tapered piston moves, the sealing rubber ring is squeezed and expanded, squeezing the engaging teeth outward, further tightening the engaging teeth and the engaging groove at the end of the connecting hole, forming a high-strength mechanical connection; Step 4: After the oil injection is stopped, the hydraulic oil in the oil chamber reacts to the other end of the sealing plug, and cooperates with the elastic support mechanism to seal the center hole of the fixed plate to ensure the supporting effect of the hydraulic oil on the piston.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention replaces the conventional bolt connection in the prior art with a hydraulic expansion splicing mechanism. The hydraulic expansion splicing mechanism is composed of a metal sleeve, a bite tooth, a sealing rubber ring, a piston and an oil injection mechanism. During the docking process of the plug-in slot of the first wall panel and the plug-in block of the second wall panel, the upper and lower metal sleeves inside the plug-in slot will extend into the connecting hole of the plug-in block. Since the bite tooth is arranged on the outside of the sealing rubber ring, the connecting hole contacts the bite tooth and squeezes it. The elastic action of the sealing rubber ring will cause it to shrink, thereby facilitating the metal sleeve to smoothly enter the connecting hole. A plurality of bite grooves are provided at the end of the connecting hole. After the metal sleeve reaches the installation position, the bite tooth will engage with the bite groove. After that, after the positioning mechanism locks the plug-in slot and the plug-in block, the staff uses an external pressure pump to match the hydraulic oil pipe with the oil injection nozzle to allow hydraulic oil to enter the oil injection mechanism from the oil injection hole, and apply pressure to the sealing plug through the through hole in the center of the fixed plate, so that the elastic support mechanism When the structure contracts, the hydraulic oil is able to pass through the center hole, enter the oil chamber of the metal sleeve through the through hole, and squeeze the piston. In the process of pushing the tapered piston to move, the sealing rubber ring is squeezed, causing it to expand and squeeze the engaging teeth toward the outside, further improving the fastening effect of the engaging teeth and the engaging grooves, forming a high-strength mechanical connection. After the oil injection stops, the hydraulic oil in the oil chamber reacts to the other end of the sealing plug, and cooperates with the elastic support mechanism to seal the center hole of the fixed plate, ensuring the support effect of the hydraulic oil on the piston, and achieving fast and accurate alignment without the need to rotate the bolts one by one, greatly shortening the installation time, significantly improving construction efficiency, avoiding stress concentration problems, and improving structural stability. In addition, the high-strength mechanical connection formed by the hydraulic expansion and splicing mechanism does not require a complicated positioning process, and multi-directional tightening can be achieved through a single expansion operation, reducing errors in manual operation and ensuring the overall strength and reliability of the prefabricated wall panel assembly structure.

[0017] 2. The present invention is provided with a positioning mechanism installed by an auxiliary hydraulic expansion splicing mechanism. During the docking process of the plug-in slot of the first wall panel and the plug-in block of the second wall panel, due to the inclined structure of the positioning block, it will be squeezed when it contacts the guide groove of the positioning slot, so that the two positioning blocks are synchronously closed together toward the center, thereby smoothly entering the guide groove. After the plug-in slot and the plug-in block are engaged, the positioning block extends to the inside of the slot. After the guide groove loses its squeezing of the positioning block, the positioning block is synchronously separated under the action of the supporting spring, realizing the connection between the slot and the positioning block. If the two wall panels need to be detached due to installation problems, it is only necessary to rotate the adjusting wheel to drive the gear to rotate. Under the engagement of the gear and the two rack plates, the movable plates at one end of the positioning block are driven to close quickly. At this time, the first wall panel and the second wall panel can be easily separated by pulling them outward. The first wall panel and the second wall panel are locked by the positioning mechanism. Then, a stable initial connection is formed in the process of the external pressure pump injecting oil into the hydraulic expansion and splicing mechanism, which effectively prevents the wall panels from shifting or separating during the oil injection and tightening process of the hydraulic expansion and splicing mechanism, provides a stable foundation for hydraulic expansion, and ensures that a high-strength mechanical connection can be formed between the metal sleeve and the connecting hole. In addition, this structure does not require complicated alignment operations, reduces installation difficulty, and improves assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the first wall panel and the second wall panel of the present invention; Figure 2 This is a schematic structural diagram of the first wall panel and the second wall panel of the present invention before assembly; Figure 3 For the present invention Figure 2 A partial enlarged view of area A in the middle; Figure 4 A perspective view of the first wall panel and the second wall panel of the present invention after assembly; Figure 5 A three-dimensional diagram of the positioning mechanism of the present invention; Figure 6 It is a three-dimensional diagram of the hydraulic expansion splicing mechanism of the present invention.

[0019] In the figure: 1. First wall panel; 2. Second wall panel; 3. Connecting groove; 4. Oiling nozzle; 5. Adjusting wheel; 6. Connecting block; 7. Hydraulic expansion splicing mechanism; 8. Positioning mechanism; 9. Connecting hole; 10. Positioning groove; 11. Friction damper; 12. Metal sleeve; 13. Engaging teeth; 14. Piston; 15. Oiling mechanism; 16. Limiting groove; 17. Movable plate; 18. Support spring; 19. Positioning block; 21. Engaging groove; 22. Guide groove; 23. Slot; 24. Gear; 25. Rack plate; 28. Sealing rubber ring; 29. ​​Oil chamber; 30. Through hole; 31. Fixed plate; 32. Sealing plug; 33. Elastic supporting mechanism; 34. Oiling hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1-6 The present invention provides an embodiment of a prefabricated wall panel assembly structure, comprising a first wall panel 1 and a second wall panel 2. A plurality of plug-in slots 3 are provided on one side of the first wall panel 1. A hydraulic expansion splicing mechanism 7 is symmetrically installed in the upper and lower portions of the plug-in slots 3. The hydraulic expansion splicing mechanism 7 comprises a metal sleeve 12, engaging teeth 13, a sealing rubber ring 28, a piston 14, and an oil injection mechanism 15. The metal sleeve 12 is welded to the plug-in slot 3. An oil chamber 29 is provided inside the metal sleeve 12, and a piston 14 is slidably disposed inside the oil chamber 29. Multiple mounting grooves are provided at one end of the metal sleeve 12. The sealing rubber ring 28 is sealed inside the installation groove, and four annular sliding grooves are provided on the outside of the installation groove. The bite teeth 13 are slidably installed inside the sliding groove, and the inner side of the bite teeth 13 is fixed to the sealing rubber ring 28. The end of the metal sleeve 12 is provided with an exhaust hole. One side of the second wall panel 2 is provided with multiple plug-in blocks 6, and the plug-in blocks 6 are snap-fitted with the plug-in groove 3. The plug-in blocks 6 are symmetrically provided with connecting holes 9 in the upper and lower parts, and the connecting holes 9 are plug-fitted with the metal sleeve 12. The inner end of the connecting hole 9 is provided with multiple bite grooves 21, and the bite teeth 13 are snap-fitted with the bite grooves 21. During assembly, the first wall panel 1 is docked with the second wall panel 2, the plug block 6 is inserted into the plug slot 3, and the metal sleeve 12 is inserted into the connection hole 9. At this point, the engaging teeth 13 are squeezed by the connection hole 9, causing the sealing rubber ring 28 to contract and facilitate insertion. Subsequently, hydraulic oil is injected through the oil injection mechanism 15, pushing the piston 14 to squeeze the sealing rubber ring 28, causing it to expand. This in turn squeezes the engaging teeth 13 outward, forcing it to tightly engage with the engaging slot 21. Compared to traditional connection methods, this avoids the stress concentration problem of bolted connections, achieving multi-directional, high-strength tightening through hydraulic expansion, resulting in greater connection stability. Furthermore, the installation process eliminates the need to tighten bolts individually, improving assembly efficiency.

[0022] See also Figure 2 、 Figure 3 、 Figure 4 and Figure 6A through hole 30 is provided between the oil filling mechanism 15 and the metal sleeve 12, and the through hole 30 is connected to the oil chamber 29. A fixing plate 31 is fixed at the middle position of the oil filling mechanism 15, and a center hole of a conical structure is provided at the center position of the fixing plate 31. A sealing plug 32 of a conical structure is provided on the inner side of the center hole of the fixing plate 31. An elastic support mechanism 33 is installed between the sealing plug 32 and the metal sleeve 12. An oil filling hole 34 is provided on one side of the oil filling mechanism 15. An oil filling nozzle 4 is provided at the front end of the first wall panel 1. The oil filling nozzle 4 is connected to the oil filling hole 34 and is used to connect to an external oil pump pipeline. An external pressure pump injects hydraulic oil into the oil injection mechanism 15 through the oil injection nozzle 4 and the oil injection hole 34. The hydraulic oil pushes the sealing plug 32, compressing the elastic support mechanism 33, and then passes through the center hole of the fixed plate 31 and the through hole 30 to enter the oil chamber 29 of the metal sleeve 12. After the oil injection stops, the hydraulic oil in the oil chamber 29 pushes back against the sealing plug 32, causing the elastic support mechanism 33 to return to its original position. The sealing plug 32 reseals the center hole of the fixed plate 31, maintaining a stable pressure in the oil chamber 29. This ensures that the hydraulic oil steadily pushes the piston 14 to achieve expansion and tightening, effectively preventing hydraulic oil leakage, ensuring the long-term stable operation of the hydraulic expansion splicing mechanism 7, and improving the reliability of the prefabricated wall panel connection.

[0023] Furthermore, the elastic support mechanism 33 consists of a fixed column, a movable column that slides with the fixed column, and a spring mounted between the fixed and movable columns. One end of the fixed column is fixed to the metal sleeve 12, and one end of the movable column is fixed to the sealing plug 32. When hydraulic oil is injected, the hydraulic oil pressure overcomes the spring force, pushing the movable column to slide relative to the fixed column, compressing the spring, causing the sealing plug 32 to move and open the oil circuit. After the oil injection stops, the spring force pushes the movable column back to its original position, causing the sealing plug 32 to reseal the oil circuit. The elastic support mechanism 33 achieves automatic opening, closing, and sealing of the oil circuit, resulting in a simple and reliable structure, ensuring the normal operation of the hydraulic system, and can buffer hydraulic oil pressure fluctuations, thereby extending the service life of the hydraulic expansion and splicing mechanism 7.

[0024] See also Figure 2 、 Figure 3 and Figure 4 , a positioning mechanism 8 is provided at the middle position of the plug-in slot 3, and the positioning mechanism 8 includes a limiting slot 16 provided on the inner side of the plug-in slot 3, and a movable plate 17 with a sliding limit is symmetrically installed in the upper and lower parts of the limiting slot 16, and one end of the movable plate 17 extends to the inside of the plug-in slot 3, and a positioning block 19 is integrally formed at one end of the movable plate 17, and one end of the positioning block 19 is in an inclined structure. Support springs 18 are installed on both sides between the upper and lower movable plates 17, and a card slot 23 is provided at the middle position of the plug-in block 6. The positioning slot 10 consists of a guide slot 22 and a card slot 23. The guide slot 22 is used to squeeze the positioning block 19 to make the movable plate 17 enter, and the positioning block 19 cooperates with the support spring 18 to engage with the card slot 23; When the first wall panel 1 and the second wall panel 2 are docked, the positioning block 19 contacts the guide groove 22, and the movable plate 17 is squeezed to slide, and the support spring 18 is compressed; when the plug-in block 6 and the plug-in slot 3 are snapped into place, the positioning block 19 enters the slot 23, and the support spring 18 resets and pushes the positioning block 19 to clamp, thereby realizing rapid and accurate positioning and preliminary locking of the prefabricated wall panels, and preventing the wall panels from shifting during the hydraulic expansion process.

[0025] See also Figure 1 and Figure 5 , a gear 24 is rotatably installed at the center position of the front end of the limiting groove 16, and rack plates 25 with staggered distribution are provided on both sides of the gear 24. The side of the rack plate 25 is limited by the sliding of the first wall panel 1, and the rack plate 25 is meshed with the gear 24. One end surface of the two rack plates 25 is respectively fixed to the upper and lower movable plates 17. The front end of the first wall panel 1 is also provided with an adjusting wheel 5, which is rotatably connected to the first wall panel 1, and the shaft at one end of the adjusting wheel 5 is connected to the shaft of the gear 24; Rotating the adjusting wheel 5 drives the gear 24 to rotate. The gear 24 is meshed with the rack plate 25 to transmit the transmission, so that the rack plates 25 on both sides move synchronously, thereby driving the movable plate 17 and the positioning block 19 to move, thereby realizing the clamping and loosening of the positioning block 19. The positioning block 19 can be conveniently controlled through the gear rack transmission structure, which is labor-saving and accurate in operation, and has a compact structure and occupies little space, making it convenient for the installation and disassembly of prefabricated wall panels.

[0026] See also Figure 2 、 Figure 3 and Figure 4 A friction damper 11 is installed between the second wall panel 2 and the plug-in block 6. Its ends are bolted to the second wall panel 2 and the plug-in block 6, respectively. When the prefabricated wall panel is subjected to external forces such as vibration, relative motion occurs between the second wall panel 2 and the plug-in block 6. Friction dampers 11 rub against each other, converting vibration energy into heat and dissipating it, thereby reducing the vibration amplitude of the wall panel. This effectively improves the seismic performance of the prefabricated wall panel assembly structure, enhances the building's safety in disasters such as earthquakes, and ensures the stability of the building structure.

[0027] Furthermore, the contact surfaces of the first wall panel 1 and the second wall panel 2 are both provided with anti-friction rubber linings. During the wall panel docking process, the anti-friction rubber lining reduces the friction between the contact surfaces of the first wall panel 1 and the second wall panel 2, making it easier to dock the wall panels. During use, the elasticity of the rubber lining can buffer tiny displacements and vibrations between the wall panels.

[0028] The assembly method of the prefabricated wall panel assembly structure comprises the following steps: Step 1: dock the first wall panel 1 and the second wall panel 2 so that the insertion slot 3 is aligned with the insertion block 6. During the docking process, since the positioning block 19 is inclined, when it contacts the guide groove 22 of the positioning slot 10, the guide groove 22 squeezes the positioning block 19, causing the two positioning blocks 19 to synchronously move toward the center, thereby smoothly docking the insertion slot 3 with the insertion block 6. Step 2: When the insertion slot 3 and the insertion block 6 are fully engaged, the positioning block 19 extends into the interior of the slot 23. At this time, the positioning block 19 loses the squeeze of the guide groove 22. Under the action of the support spring 18, the positioning block 19 is synchronously separated, achieving a stable connection between the slot 23 and the positioning block 19, completing the preliminary locking of the first wall panel 1 and the second wall panel 2; Step 3: Connect the external pressure pump to the oil filling nozzle 4 of the hydraulic expansion and splicing mechanism 7 through the hydraulic oil pipe, start the external pressure pump, and allow the hydraulic oil to enter the oil filling mechanism 15 from the oil filling hole 34. The hydraulic oil exerts pressure on the sealing plug 32 through the through hole 30 in the center of the fixed plate 31, causing the elastic support mechanism 33 to contract. The hydraulic oil is able to pass through the center hole and enter the oil chamber 29 of the metal sleeve 12 through the through hole 30 to squeeze the piston 14. As the tapered piston 14 moves, the sealing rubber ring 28 is squeezed and expanded, squeezing the meshing teeth 13 outward, further tightening the meshing teeth 13 to the meshing groove 21 at the end of the connecting hole 9, forming a high-strength mechanical connection; Step 4: After stopping the oil injection, the hydraulic oil in the oil chamber 29 reacts to the other end of the sealing plug 32 and cooperates with the elastic support mechanism 33 to seal the center hole of the fixing plate 31 to ensure the supporting effect of the hydraulic oil on the piston 14.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A prefabricated wall panel assembly structure, comprising a first wall panel (1) and a second wall panel (2), characterized in that: A plurality of plug-in slots (3) are provided on one side of the first wall panel (1), and a hydraulic expansion splicing mechanism (7) is symmetrically installed in the upper and lower parts of the plug-in slots (3). The hydraulic expansion splicing mechanism (7) is composed of a metal sleeve (12), a bite tooth (13), a sealing rubber ring (28), a piston (14) and an oil injection mechanism (15). The metal sleeve (12) is welded and fixed to the plug-in slot (3). An oil chamber (29) is provided in the metal sleeve (12), and the piston (14) is slidably arranged in the oil chamber (29). One end of the metal sleeve (12) is provided with a plurality of mounting grooves, and the sealing rubber ring (28) is provided in the oil chamber (29). 8) The seal is arranged inside the installation groove, and four annularly distributed slide grooves are arranged on the outside of the installation groove. The bite teeth (13) are slidably installed inside the slide groove, and the inner side of the bite teeth (13) is fixed to the sealing rubber ring (28). A plurality of plug-in blocks (6) are provided on one side of the second wall panel (2), and the plug-in blocks (6) are snap-fitted with the plug-in groove (3). The plug-in blocks (6) are symmetrically arranged with connection holes (9) on the upper and lower sides, and the connection holes (9) are snap-fitted with the metal sleeve (12). The inner end of the connection hole (9) is provided with a plurality of bite grooves (21), and the bite teeth (13) are snap-fitted with the bite grooves (21).

2. The prefabricated wall panel assembly structure according to claim 1, characterized in that: A through hole (30) is provided between the oil filling mechanism (15) and the metal sleeve (12), and the through hole (30) is communicated with the oil chamber (29). A fixing plate (31) is fixedly provided at the middle position of the oil filling mechanism (15), and a center hole with a conical structure is provided at the center position of the fixing plate (31). A sealing plug (32) with a conical structure is provided on the inner side of the center hole of the fixing plate (31). An elastic support mechanism (33) is installed between the sealing plug (32) and the metal sleeve (12). An oil filling hole (34) is provided on one side of the oil filling mechanism (15). An oil filling nozzle (4) is provided at the front end of the first wall panel (1), and the oil filling nozzle (4) is communicated with the oil filling hole (34). The oil filling nozzle (4) is used for connecting to an external oil pump pipeline.

3. The prefabricated wall panel assembly structure according to claim 2, characterized in that: The elastic support mechanism (33) is composed of a fixed column, a movable column that is slidably limited with the fixed column, and a spring installed between the fixed column and the movable column. One end of the fixed column is fixed to the metal sleeve (12), and one end of the movable column is fixed to the sealing plug (32).

4. The prefabricated wall panel assembly structure according to claim 3, characterized in that: A positioning mechanism (8) is provided at the middle position of the plug-in slot (3), and the positioning mechanism (8) includes a limiting slot (16) provided on the inner side of the plug-in slot (3), and a movable plate (17) for sliding limiting is symmetrically installed in the upper and lower parts of the limiting slot (16), and one end of the movable plate (17) extends into the interior of the plug-in slot (3), and a positioning block (19) is integrally formed at one end of the movable plate (17), and one end of the positioning block (19) is in an inclined structure, and support springs (18) are installed on both sides between the upper and lower movable plates (17), and a card slot (23) is provided at the middle position of the plug-in block (6), and the positioning slot (10) consists of a guide slot (22) and a card slot (23), and the guide slot (22) is used to squeeze the positioning block (19) to make the movable plate (17) enter, and the positioning block (19) cooperates with the support spring (18) to be engaged with the card slot (23).

5. The prefabricated wall panel assembly structure according to claim 4, characterized in that: A gear (24) is rotatably mounted at the center of the front end of the limiting groove (16), and rack plates (25) are staggered on both sides of the gear (24). The side surfaces of the rack plates (25) are slidably limited with the first wall panel (1), and the rack plates (25) are meshedly connected with the gear (24). One end surface of the two rack plates (25) is fixed to the upper and lower movable plates (17) respectively.

6. The prefabricated wall panel assembly structure according to claim 5, characterized in that: The front end of the first wall panel (1) is further provided with an adjusting wheel (5), the adjusting wheel (5) is rotatably connected to the first wall panel (1), and the shaft at one end of the adjusting wheel (5) is connected to the shaft of the gear (24).

7. The prefabricated wall panel assembly structure according to claim 1, characterized in that: A friction damper (11) is provided between the second wall panel (2) and the plug-in block (6), and two ends of the friction damper (11) are respectively fixed to the second wall panel (2) and the plug-in block (6) by bolts.

8. The prefabricated wall panel assembly structure according to claim 1, characterized in that: An exhaust hole is provided at the end of the metal sleeve (12).

9. The prefabricated wall panel assembly structure according to claim 1, characterized in that: The contact surfaces of the first wall panel (1) and the second wall panel (2) are both provided with anti-friction rubber linings.

10. The assembly method of the prefabricated wall panel assembly structure according to claim 6, characterized in that: The steps include: Step 1: docking the first wall panel (1) and the second wall panel (2) so that the plug-in slot (3) is aligned with the plug-in block (6). During the docking process, since the positioning block (19) is in an inclined structure, when it contacts the guide groove (22) of the positioning slot (10), the guide groove (22) squeezes the positioning block (19), prompting the two positioning blocks (19) to synchronously close together toward the center, thereby allowing the plug-in slot (3) to dock smoothly with the plug-in block (6); Step 2: After the insertion slot (3) and the insertion block (6) are completely engaged, the positioning block (19) extends to the inside of the slot (23). At this time, the positioning block (19) loses the squeezing of the guide slot (22). Under the action of the support spring (18), the positioning block (19) is synchronously separated, achieving a stable connection between the slot (23) and the positioning block (19), and completing the preliminary locking of the first wall panel (1) and the second wall panel (2); Step 3: Connect the external pressure pump to the oil filling nozzle (4) of the hydraulic expansion splicing mechanism (7) through the hydraulic oil pipe, start the external pressure pump, and allow the hydraulic oil to enter the oil filling mechanism (15) from the oil filling hole (34). The hydraulic oil applies pressure to the sealing plug (32) through the through hole (30) in the center of the fixed plate (31), causing the elastic support mechanism (33) to contract, and the hydraulic oil is able to pass through the center hole and enter the oil chamber (29) of the metal sleeve (12) through the through hole (30) to squeeze the piston (14). As the tapered piston (14) moves, the sealing rubber ring (28) is squeezed and expanded, squeezing the engaging teeth (13) outward, so that the engaging teeth (13) and the engaging groove (21) at the end of the connecting hole (9) are further tightened to form a high-strength mechanical connection; Step 4: After the oil injection is stopped, the hydraulic oil in the oil chamber (29) reacts to the other end of the sealing plug (32), and cooperates with the elastic support mechanism (33) to seal the center hole of the fixed plate (31), thereby ensuring the supporting effect of the hydraulic oil on the piston (14).

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