Fabricated polyurethane insulation board with splicing mechanism

Abstract

The invention relates to the technical field of polyurethane insulation boards, and discloses an assembly type polyurethane insulation board with a splicing mechanism, the assembly type polyurethane insulation board comprises a first polyurethane insulation board and a second polyurethane insulation board, a sliding connecting piece is fixedly mounted on the rear side face of the first polyurethane insulation board through bolts, and a first semicircular board is fixedly mounted on the sliding connecting piece; when the first polyurethane heat preservation plate and the second polyurethane heat preservation plate need to be connected, a semi-annular connecting block is pushed to push one end of the semi-annular connecting block into a connecting cavity of the second semi-circular plate, the end of the semi-annular connecting block penetrates through a U-shaped limiting plate, and the second semi-circular plate is fixedly installed on the rear side face of the second polyurethane heat preservation plate through a bolt. And then a pushing block is controlled to move by rotating a rotating plate so as to control an arc-shaped convex block and a T-shaped plate to move, finally, a limiting block is pushed out from a contraction state, the pushed-out limiting block and a U-shaped limiting plate form axial abutting connection, reliable locking and fixing of a semi-annular connecting block are achieved, and plate corner damage caused by curing and bonding in traditional adhesive connection is avoided.

Description

Technical Field

[0001] This invention relates to the field of polyurethane insulation board technology, specifically to an assembled polyurethane insulation board with a splicing mechanism. Background Technology

[0002] Rigid polyurethane foam, as a high-performance insulation material, is widely used in building exterior wall insulation, cold storage enclosure, and other fields due to its extremely low thermal conductivity and good closed-cell ratio. Polyurethane insulation boards typically use metal steel plates as the outer protective layer and are filled with rigid polyurethane foam to form a sandwich structure, which not only ensures insulation performance but also improves the overall structural strength of the board. When building a cold storage, multiple polyurethane insulation boards need to be spliced ​​and installed on a pre-welded steel structure frame.

[0003] Currently, in order to solve the splicing problem between insulation boards, various combined connection structures have emerged in the industry. For example, a combined assembled polyurethane insulation board disclosed in authorization announcement number CN223880544U includes an insulation board body and a connecting sleeve, which realizes the function of combining and connecting two adjacent insulation boards, so that two adjacent insulation boards are connected to each other, thereby avoiding gaps between two adjacent insulation boards, ensuring the heat insulation effect of the insulation board, and making the installation of insulation boards more convenient, saving time and effort, and improving the installation efficiency of insulation boards.

[0004] Currently, in the construction of cold storage facilities, the steel frame is typically welded first, and then polyurethane insulation panels are spliced ​​and fixed to the outside of the steel frame piece by piece. Because the dimensions of the insulation panels are difficult to perfectly match the steel frame, the joints between two insulation panels are often not located precisely at the support positions of the steel frame. This makes it impossible to reliably fix the joints directly with bolts or other mechanical fasteners. To address this issue, adhesives are commonly used to fill and bond the joints of the insulation panels. However, this adhesive-based method has the following drawbacks: Firstly, for temporary cold storage facilities or prefabricated cold storage facilities that need to be relocated, the insulation panels often need to be disassembled and reused. Using adhesives during disassembly can easily lead to damage to the edges and corners of the panels, peeling of the surface layer, and even damage to the overall structure, significantly reducing the material's reusability. Secondly, adhesive bonding has a long curing time, affecting construction progress, and the bonding quality is greatly affected by the ambient temperature and humidity, making it difficult to guarantee long-term reliability. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an assembled polyurethane insulation board with a splicing mechanism, aiming to solve the problems of easy damage to the board during disassembly and difficulty in reuse caused by traditional adhesive bonding methods.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an assembled polyurethane insulation board with a splicing mechanism, comprising a first polyurethane insulation board and a second polyurethane insulation board. A sliding connector is bolted to the rear side of the first polyurethane insulation board, and a first semi-circular plate is fixedly mounted on the sliding connector. A second semi-circular plate is bolted to the rear side of the second polyurethane insulation board. An installation cavity is formed on one side of the first semi-circular plate, and a semi-annular connecting block is disposed within the installation cavity. An arc-shaped sliding connector is formed through the outer side of the first semi-circular plate. The semi-circular connecting block has a mounting block fixedly connected to one side of the semi-circular connecting block, which is slidably connected to the arc-shaped sliding opening. A connecting cavity is opened on one side of the second semi-circular plate. A U-shaped limiting plate is fixedly installed on the side wall of the connecting cavity. One end of the semi-circular connecting block is located in the connecting cavity and is provided with a limiting member that abuts against the U-shaped limiting plate. The limiting member is also used to abut against the side wall of the connecting cavity. A rotating member is provided in the connecting cavity to control the movement of the limiting member. A pushing member is provided in the mounting cavity to control the movement of the semi-circular connecting block. The pushing member is used to control the rapid correspondence between the connecting cavity and the mounting cavity.

[0007] Preferably, the sliding connector includes a slide rail that is fixedly mounted on a polyurethane insulation board by bolts, and an annular groove is provided on the inner side of the slide rail. A circular slider that is fixedly connected to the first semicircular plate is slidably disposed in the annular groove.

[0008] Preferably, the pushing member includes an arc-shaped housing fixedly installed in the mounting cavity, an arc-shaped connecting port corresponding to the arc-shaped sliding opening is provided through the outer side of the arc-shaped housing, the mounting block is slidably connected to the arc-shaped connecting port, and an arc-shaped spring is fixedly provided between the mounting block on the inner side of the arc-shaped housing and the cavity of the arc-shaped housing.

[0009] Preferably, the semi-annular connecting block has a fixed cavity, the limiting member includes a T-shaped plate slidably connected to the fixed cavity, a telescopic spring is fixedly disposed between the T-shaped plate and the fixed cavity, an arc-shaped protrusion is fixedly installed on one side of the T-shaped plate, limiting grooves that communicate with each other are opened on both sides of the T-shaped plate and the arc-shaped protrusion, a connecting groove is opened through both sides of the fixed cavity, a limiting block that abuts against the U-shaped limiting plate is slidably disposed in the connecting groove, the two limiting blocks abut against the two side walls of the connecting cavity respectively, a fixing block that is slidably connected to the limiting groove is fixedly installed on one side of the limiting block, a fixing groove is opened at the end of the semi-annular connecting block, and a pushing member for controlling the movement of the arc-shaped protrusion is disposed in the fixing groove.

[0010] Preferably, the pushing member includes an arc-shaped push block that is slidably connected to the fixing groove, and a push rod is fixedly connected to one side of the arc-shaped push block. One end of the push rod is located in the fixing cavity and is fixedly connected to the arc-shaped protrusion.

[0011] Preferably, the rotating component includes a stop block fixedly installed in the connecting cavity, a placement groove corresponding to the position of the fixed groove is provided on one side of the stop block, a pushing block for pushing the arc-shaped push block is slidably arranged in the placement groove, and a rotating plate threadedly connected to the second semicircular plate, one end of the rotating plate being rotatably connected to the pushing block.

[0012] Preferably, there is a gap between the semi-annular connecting block and the sidewalls of the connecting cavity and the mounting cavity.

[0013] Preferably, when the arc spring is in its normal state, one end of the semi-annular connecting block is located inside the connecting cavity.

[0014] Preferably, both polyurethane insulation board one and polyurethane insulation board two have a concave groove on one side and a convex connecting block that matches the concave groove is fixedly installed on the other side.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. To avoid the drawbacks of traditional adhesive bonding methods, which easily lead to damage to the boards during disassembly and prevent reuse, this invention uses a semi-annular connecting block inside the first semi-circular plate. When it is necessary to connect polyurethane insulation board one and polyurethane insulation board two, the semi-annular connecting block is pushed so that one end is inserted into the connecting cavity of the second semi-circular plate, and the end of the semi-annular connecting block passes through the U-shaped limiting plate. Then, by rotating the rotating plate, the pushing block is moved, and the pushing block pushes the arc-shaped push block to slide along the guide path. The arc-shaped push block transmits the driving force to the arc-shaped protrusion and the T-shaped plate through the push rod, finally pushing the limiting block out of the retracted state. The pushed-out limiting block forms an axial abutment with the U-shaped limiting plate, realizing reliable locking and fixing of the semi-annular connecting block. At the same time, the extended part of the limiting block and the two inner walls of the connecting cavity are also connected. This mechanical locking structure forms a tight contact, thus completing a rigid connection between the two insulation boards. During disassembly, simply rotating the rotating plate in the opposite direction resets the pushing block, and the limiting block automatically retracts under the action of the telescopic spring, easily separating the semi-circular connecting block from the connecting cavity. This avoids problems such as edge damage, surface peeling, and even overall structural damage caused by the curing and bonding of traditional adhesive connections. It keeps both polyurethane insulation board one and polyurethane insulation board two intact after disassembly, enabling multiple reuses of materials and significantly reducing the overall cost of cold storage construction. More importantly, while the pushed-out limiting block abuts against the two side walls of the connecting cavity, it allows for a gap between the semi-circular connecting block and the connecting cavity, ensuring a stable connection while reducing sliding friction.

[0017] 2. To reduce the reliance on precise measurements during on-site installation, simplify the construction process, and improve assembly efficiency, this invention uses bolts to install a slide rail on a polyurethane insulation board. The first semicircular plate is slidably connected to the slide rail via a circular slider at its bottom, forming an adjustment mechanism that can move along a straight line. In actual installation, operators do not need to determine the precise correspondence between the first and second semicircular plates in advance through precise measurements. They only need to fix the second semicircular plate in the conventional way, and then push the first semicircular plate to make it slide on the slide rail. The position can be dynamically adjusted during the movement until the connecting cavity and the installation cavity are completely aligned and overlapped.

[0018] 3. To ensure rapid and accurate positioning of the second and first semicircular plates, this invention installs an arc-shaped housing within the mounting cavity and slides the mounting block of the semi-annular connecting block to the arc-shaped connecting port on the arc-shaped housing. Simultaneously, an arc-shaped spring is fixed between the mounting block and the cavity of the arc-shaped housing. When the arc-shaped spring is in its normally extended state, one end of the semi-annular connecting block extends into the connecting cavity, forming a pre-positioned state. During the process of pushing the first semicircular plate towards the second semicircular plate along the slide rail, the arc-shaped spring controls the front end of the semi-annular connecting block to remain within the connecting cavity until it can no longer move. At this point, the positions of the connecting cavity and the mounting cavity perfectly correspond and overlap. The operator can then control the semi-annular connecting block to continue moving, smoothly pushing the limiting member into the connecting cavity for subsequent rigid locking. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 for Figure 1 A magnified structural diagram of A in the middle;

[0021] Figure 3 This is a three-dimensional structural diagram of the connection between the first and second semicircular plates of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the sliding connector of the present invention;

[0023] Figure 5 This is a three-dimensional cross-sectional structural diagram of the first and second semicircular plates of the present invention.

[0024] Figure 6 This is a three-dimensional cross-sectional structural diagram of the semi-annular connecting block of the present invention;

[0025] Figure 7 for Figure 6 A magnified structural diagram of B in the diagram;

[0026] Figure 8 This is a three-dimensional structural diagram of the limiting component of the present invention;

[0027] Figure 9 This is a schematic diagram of the installation structure of polyurethane insulation board one and polyurethane insulation board two of the present invention.

[0028] In the diagram: 1. Polyurethane insulation board one; 2. Polyurethane insulation board two; 3. T-shaped connecting block; 4. U-shaped groove; 5. First semicircular plate; 6. Second semicircular plate; 7. Slide rail; 8. Connecting cavity; 9. Annular slide groove; 10. Semi-annular connecting block; 11. Circular slider; 12. Rotating plate; 13. Arc-shaped sliding opening; 14. Mounting block; 15. Stop block; 16. Limiting block; 17. U-shaped limiting plate; 18. Mounting cavity; 19. Arc-shaped shell; 20. Arc-shaped spring; 21. Telescopic spring; 22. Push block; 23. Placement groove; 24. Connecting groove; 25. Limiting groove; 26. Fixing cavity; 27. Fixing groove; 28. Arc-shaped push block; 29. ​​Arc-shaped protrusion; 30. T-shaped plate; 31. Push rod; 32. Fixing block; 33. Arc-shaped connecting port. Detailed Implementation

[0029] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0030] Please see Figures 1-9 A prefabricated polyurethane insulation board with a splicing mechanism includes a polyurethane insulation board 1 and a polyurethane insulation board 2 (the polyurethane insulation board 1 and polyurethane insulation board 2 have the same structure. When building a cold storage, the polyurethane insulation board located on the side needs to be disassembled and edge-wrapped). One side of both polyurethane insulation board 1 and polyurethane insulation board 2 has a U-shaped groove 4, and the other side is fixedly provided with a convex connecting block 3 that matches the U-shaped groove 4. When splicing, the sealing between the two polyurethane insulation boards is ensured.

[0031] A sliding connector is fixedly installed on the rear side of polyurethane insulation board 1 by bolts. A first semicircular plate 5 is fixedly installed on the sliding connector. A second semicircular plate 6 is fixedly installed on the rear side of polyurethane insulation board 2 by bolts. The first semicircular plate 5 can move on the sliding connector. No precise measurement is required beforehand. Later, by sliding the first semicircular plate 5, the first semicircular plate 5 and the second semicircular plate 6 can be controlled to achieve the corresponding position.

[0032] A mounting cavity 18 is formed on one side of the first semicircular plate 5, and a semi-annular connecting block 10 is disposed within the mounting cavity 18. An arc-shaped sliding opening 13 is formed through the outer side of the first semicircular plate 5. A mounting block 14, which is slidably connected to the arc-shaped sliding opening 13, is fixedly connected to one side of the semi-annular connecting block 10. A connecting cavity 8 is formed on one side of the second semicircular plate 6, and a U-shaped limiting plate 17 is fixedly installed on the side wall of the connecting cavity 8. One end of the semi-annular connecting block 10 is located within the connecting cavity 8 and is provided with a limiting member that abuts against the U-shaped limiting plate 17. The limiting member is also used to abut against the side wall of the connecting cavity 8. A rotating member is provided within the connecting cavity 8 to control the movement of the limiting member. A fixing cavity 26 is formed within the semi-annular connecting block 10, and the limiting member includes a T-shaped plate 30 that is slidably connected to the fixing cavity 26. The T-shaped plate 30 and the fixing cavity 26 are connected... A telescopic spring 21 is fixedly installed between the T-shaped plate 30 and the U-shaped plate 17. A limiting groove 25 communicating with each other is opened on both sides of the T-shaped plate 30 and the arc-shaped protrusion 29. A connecting groove 24 is opened through both sides of the fixed cavity 26. A limiting block 16 that abuts against the U-shaped limiting plate 17 is slidably installed in the connecting groove 24. The two limiting blocks 16 abut against the two side walls of the connecting cavity 8 respectively. A fixing block 32 that is slidably connected to the limiting groove 25 is fixedly installed on one side of the limiting block 16. A fixing groove 27 is opened at the end of the semi-annular connecting block 10. A pushing component for controlling the movement of the arc-shaped protrusion 29 is provided in the fixing groove 27. The pushing component includes an arc-shaped push block 28 that is slidably connected to the fixing groove 27. A push rod 31 is fixedly connected to one side of the arc-shaped push block 28. One end of the rotating component is fixedly connected to the arc-shaped protrusion 29 within the fixed cavity 26. The rotating component includes a stop block 15 fixedly installed within the connecting cavity 8. A placement groove 23 corresponding to the position of the fixed groove 27 is provided on one side of the stop block 15. A pushing block 22 for pushing the arc-shaped pusher 28 is slidably disposed within the placement groove 23. A rotating plate 12 is threadedly connected to the second semicircular plate 6. One end of the rotating plate 12 is rotatably connected to the pushing block 22. There are gaps between the semi-annular connecting block 10 and the side walls of both the connecting cavity 8 and the mounting cavity 18. When it is necessary to connect polyurethane insulation board 1 and polyurethane insulation board 2, the semi-annular connecting block 10 is pushed into the second semicircular plate 6 by the mounting block 14, causing one end of the semi-annular connecting block 10 to pass through the U-shaped limiting plate 17. Then, by rotating... The rotating plate 12 controls the movement of the pushing block 22, which in turn pushes the arc-shaped push block 28 to slide along the guide path. The arc-shaped push block 28 transmits the driving force to the arc-shaped protrusion 29 and the T-shaped plate 30 via the push rod 31 (the telescopic spring 21 is compressed), ultimately pushing the limiting block 16 out of its retracted state (the limiting groove 25 is an arc-shaped groove at the arc-shaped protrusion 29 and a horizontal groove at the T-shaped plate 30). The pushed-out limiting block 16 forms an axial abutment with the U-shaped limiting plate 17, achieving reliable locking and fixing of the semi-annular connecting block 10. At the same time, the extended part of the limiting block 16 forms a tight abutment with the two inner walls of the connecting cavity 8, thereby completing the rigid connection between the two insulation boards. When disassembling this mechanical locking structure, it is only necessary to rotate the rotating plate 12 in the opposite direction to reset the pushing block 22.The limiting block 16 automatically retracts under the action of the telescopic spring 21, easily controlling the semi-annular connecting block 10 to return to its original position. This avoids problems such as edge damage, surface peeling, and even overall structural damage caused by the curing of traditional adhesives, ensuring the polyurethane insulation board remains intact after disassembly. This allows for multiple reuses of the material, significantly reducing the overall cost of cold storage construction. More importantly, while the extended limiting block 16 abuts against the two side walls of the connecting cavity 8, a gap is allowed between the semi-annular connecting block 10 and the connecting cavity 8, allowing for a stable connection while reducing sliding friction.

[0033] The mounting cavity 18 is provided with a pusher to control the movement of the semi-annular connecting block 10. The pusher is used to control the rapid alignment between the connecting cavity 8 and the mounting cavity 18.

[0034] As a further technical solution of the present invention, the sliding connector includes a slide rail 7 fixedly mounted on a polyurethane insulation board 1 by bolts. An annular groove 9 is provided on the inner side of the slide rail 7. A circular slider 11 fixedly connected to the first semicircular plate 5 is slidably arranged in the annular groove 9. The first semicircular plate 5 is slidably connected to the annular groove 9 through the circular slider 11 at its bottom, forming an adjustment mechanism that can move along a straight line. In the actual installation process, the operator does not need to determine the precise corresponding position of the first semicircular plate 5 and the second semicircular plate 6 in advance by precise measurement. The second semicircular plate 6 is fixed in the conventional way, and then the first semicircular plate 5 is pushed to slide on the slide rail 7. The position can be dynamically adjusted during the movement until the connecting cavity 8 and the mounting cavity 18 are completely aligned and overlapped. This reduces the dependence on precise measurement during on-site installation, simplifies the construction process, and improves assembly efficiency.

[0035] As a further technical solution of the present invention, the pushing component includes an arc-shaped housing 19 fixedly installed in the mounting cavity 18. An arc-shaped connecting port 33 corresponding to the arc-shaped sliding port 13 is provided through the outer side of the arc-shaped housing 19. The mounting block 14 is slidably connected to the arc-shaped connecting port 33. An arc-shaped spring 20 is fixedly provided between the mounting block 14 located on one side of the arc-shaped housing 19 and the cavity of the arc-shaped housing 19. When the arc-shaped spring 20 is in the normal state, one end of the semi-circular connecting block 10 is located in the connecting cavity 8, forming a pre-positioned state. During the process of pushing the first semi-circular plate 5 towards the second semi-circular plate 6 along the slide rail 7, after the connecting cavity 8 and the mounting cavity 18 overlap, the arc-shaped spring 20 controls the front end of the semi-circular connecting block 10 to always be located in the connecting cavity 8 until it can no longer move. At this time, the positions of the connecting cavity 8 and the mounting cavity 18 are exactly completely aligned and overlapped. At this time, the operator controls the semi-circular connecting block 10 to continue moving, and the limiting component can be smoothly pushed into the connecting cavity 8 for subsequent rigid locking, ensuring that the second semi-circular plate 6 and the first semi-circular plate 5 can be quickly and accurately positioned.

[0036] During work:

[0037] Step 1: Pre-install connection components

[0038] The slide rail 7 is fixedly installed on the rear side of the polyurethane insulation board 1 by bolts, and the second semicircular plate 6 is fixedly installed on the rear side of the polyurethane insulation board 2 by bolts. The first semicircular plate 5 is adjustable for flexible positioning. Operators do not need to determine the precise correspondence between the first semicircular plate 5 and the second semicircular plate 6 in advance through precise measurement, which lays the foundation for subsequent rapid assembly.

[0039] Step 2: Sliding adjustment to achieve precise alignment

[0040] Polyurethane insulation board 1 and polyurethane insulation board 2 are fixedly installed on the welded steel structure frame, while keeping polyurethane insulation board 1 and polyurethane insulation board 2 in a spliced ​​state (the concave groove 4 and the convex connecting block 3 are interlocked). Then, the first semicircular plate 5 is slid and moved, so that it slides in the annular groove 9 of the slide rail 7 through the circular slider 11, driving the first semicircular plate 5 to move towards the second semicircular plate 6. The movement process can be divided into two stages: In the first stage, when the connecting cavity 8 and the mounting cavity 18 have not yet overlapped, the semi-annular connecting block 10 can be temporarily retracted into the mounting cavity 18 by pushing the mounting block 14 to avoid interference with the second semicircular plate 6. In the second stage, when the connecting cavity 8 and the mounting cavity 18 begin to overlap, the front end of the semi-annular connecting block 10 is always located in the connecting cavity 8 under the action of the arc spring 20 until it is pushed to the point of resistance, when the two cavities are exactly aligned and overlapped.

[0041] Step 3: Insert the semi-circular connecting block 10

[0042] The semi-annular connecting block 10 is pushed by the mounting block 14 to move along the arc-shaped sliding port 13 and the arc-shaped connecting port 33, so that one end of it continues to enter the connecting cavity 8 of the second semi-circular plate 6, and the end of the semi-annular connecting block 10 passes through the U-shaped limiting plate 17 until the fixing groove 27 corresponds to the position of the placement groove 23 on the stop block 15.

[0043] Step 4: Rotate to lock

[0044] Rotate the rotating plate 12. The rotating plate 12 drives the push block 22 to move in the placement groove 23 through the thread. The push block 22 pushes the arc-shaped push block 28 to slide along the fixed groove 27. The arc-shaped push block 28 transmits the driving force to the arc-shaped protrusion 29 and the T-shaped plate 30 through the push rod 31, so that the T-shaped plate 30 overcomes the resistance of the telescopic spring 21 and moves into the fixed cavity 26.

[0045] During the movement of the T-shaped plate 30, the limiting grooves 25 on both sides move synchronously. Since the limiting groove 25 is an arc groove at the arc protrusion 29 and a horizontal groove at the T-shaped plate 30, this special structure causes the fixing block 32 to be pushed outward when sliding along the limiting groove 25, which drives the limiting block 16 to extend outward from the retracted state along the connecting groove 24.

[0046] One end of the pushed-out limiting block 16 forms an axial abutment with the U-shaped limiting plate 17, thereby reliably locking and fixing the semi-annular connecting block 10 and preventing it from coming out of the connecting cavity 8. At the same time, the extended part of the limiting block 16 forms a tight abutment with the two inner side walls of the connecting cavity 8. Thus, the polyurethane insulation board 1 and the polyurethane insulation board 2 are rigidly connected through the first semi-circular plate 5, the second semi-circular plate 6 and the internal limiting components, avoiding the quality instability caused by the curing time and environmental temperature and humidity of traditional adhesive bonding. The abutment between the limiting block 16 and the two side walls of the connecting cavity 8 allows for a gap between the semi-annular connecting block 10 and the two side walls of the connecting cavity 8, which can also make the connection stable while reducing sliding friction.

[0047] Step 5: Disassembly

[0048] When the insulation panels need to be disassembled for relocation or replacement, the rotating plate 12 is rotated in the opposite direction, causing the pushing block 22 to move outward and reset, relieving the pressure on the arc-shaped pushing block 28. The elastic force of the telescopic spring 21 causes the T-shaped plate 30 and the arc-shaped protrusion 29 to automatically reset. The fixing block 32 is driven to move inward through the limiting groove 25, causing the limiting block 16 to retract from the extended state to the retracted state. At this time, the contact between the limiting block 16 and the U-shaped limiting plate 17 is released, and the semi-annular connecting block 10 returns to its free state. The arc-shaped spring 20 separates the semi-annular connecting block 10 from the U-shaped limiting plate 17, so that the disassembled polyurethane insulation board 1 and polyurethane insulation board 2 remain intact. This achieves multiple reuses of materials and significantly reduces the overall cost of cold storage construction. It is especially suitable for temporary cold storage or prefabricated cold storage scenarios that need to be relocated.

[0049] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.

Claims

1. A prefabricated polyurethane insulation board with a splicing mechanism, comprising a first polyurethane insulation board (1) and a second polyurethane insulation board (2), characterized in that, A sliding connector is fixedly installed on the rear side of the first polyurethane insulation board (1) by bolts. A first semicircular plate (5) is fixedly installed on the sliding connector. A second semicircular plate (6) is fixedly installed on the rear side of the second polyurethane insulation board (2) by bolts. An installation cavity (18) is opened on one side of the first semicircular plate (5). A semi-annular connecting block (10) is provided in the installation cavity (18). An arc-shaped sliding opening (13) is opened through the outer side of the first semicircular plate (5). An installation block (1) that is slidably connected to the arc-shaped sliding opening (13) is fixedly connected on one side of the semi-annular connecting block (10). 4) A connecting cavity (8) is provided on one side of the second semicircular plate (6). A U-shaped limiting plate (17) is fixedly installed on the side wall of the connecting cavity (8). One end of the semi-circular connecting block (10) is located in the connecting cavity (8) and is provided with a limiting member that abuts against the U-shaped limiting plate (17). The limiting member is also used to abut against the side wall of the connecting cavity (8). A rotating member is provided in the connecting cavity (8) to control the movement of the limiting member. A pushing member is provided in the mounting cavity (18) to control the movement of the semi-circular connecting block (10). The pushing member is used to control the rapid correspondence between the connecting cavity (8) and the mounting cavity (18).

2. The prefabricated polyurethane insulation board with splicing mechanism according to claim 1, characterized in that, The sliding connector includes a slide rail (7) that is fixedly installed on a polyurethane insulation board (1) by bolts. An annular groove (9) is provided on the inner side of the slide rail (7). A circular slider (11) that is fixedly connected to the first semicircular plate (5) is slidably arranged in the annular groove (9).

3. The prefabricated polyurethane insulation board with a splicing mechanism according to claim 2, characterized in that, The pusher includes an arc-shaped housing (19) fixedly installed in the mounting cavity (18). An arc-shaped connection port (33) corresponding to the arc-shaped sliding port (13) is provided through the outer side of the arc-shaped housing (19). The mounting block (14) is slidably connected to the arc-shaped connection port (33). An arc-shaped spring (20) is fixedly provided between the mounting block (14) on one side inside the arc-shaped housing (19) and the cavity of the arc-shaped housing (19).

4. The prefabricated polyurethane insulation board with a splicing mechanism according to claim 3, characterized in that, The semi-annular connecting block (10) has a fixed cavity (26) inside. The limiting member includes a T-shaped plate (30) that is slidably connected to the fixed cavity (26). A telescopic spring (21) is fixedly installed between the T-shaped plate (30) and the fixed cavity (26). An arc-shaped protrusion (29) is fixedly installed on one side of the T-shaped plate (30). The T-shaped plate (30) and the arc-shaped protrusion (29) have mutually communicating limiting grooves (25) on both sides. The fixed cavity (26) has connecting grooves through both sides. The connecting groove (24) has a limiting block (16) that slides inside the connecting groove (24) and abuts against the U-shaped limiting plate (17). The two limiting blocks (16) abut against the two side walls of the connecting cavity (8) respectively. A fixing block (32) that slides through the limiting groove (25) is fixedly installed on one side of the limiting block (16). A fixing groove (27) is opened at the end of the semi-annular connecting block (10). A pusher for controlling the movement of the arc-shaped protrusion (29) is provided in the fixing groove (27).

5. A prefabricated polyurethane insulation board with a splicing mechanism according to claim 4, characterized in that, The pusher includes an arc-shaped push block (28) that is slidably connected to the fixed groove (27). A push rod (31) is fixedly connected to one side of the arc-shaped push block (28). One end of the push rod (31) is located in the fixed cavity (26) and is fixedly connected to the arc-shaped protrusion (29).

6. A prefabricated polyurethane insulation board with a splicing mechanism according to claim 5, characterized in that, The rotating component includes a stop block (15) fixedly installed in the connecting cavity (8). A placement groove (23) corresponding to the position of the fixed groove (27) is opened on one side of the stop block (15). A push block (22) for pushing the arc-shaped push block (28) to move is slidably arranged in the placement groove (23). A rotating plate (12) is threadedly connected to the second semi-circular plate (6). One end of the rotating plate (12) is rotatably connected to the push block (22).

7. A prefabricated polyurethane insulation board with a splicing mechanism according to claim 6, characterized in that, There are gaps between the semi-annular connecting block (10) and the sidewalls of the connecting cavity (8) and the mounting cavity (18).

8. A prefabricated polyurethane insulation board with a splicing mechanism according to claim 7, characterized in that, When the arc spring (20) is in its normal state, one end of the semi-annular connecting block (10) is located inside the connecting cavity (8).

9. A prefabricated polyurethane insulation board with a splicing mechanism according to claim 1, characterized in that, Both polyurethane insulation board one (1) and polyurethane insulation board two (2) have a concave groove (4) on one side and a convex connecting block (3) that matches the concave groove (4) fixed on the other side.

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