Tunnel fire and explosion prevention plate and preparation method thereof

Abstract

This invention discloses a fireproof and explosion-proof tunnel panel and its preparation method, relating to the technical field of fireproof and explosion-proof panels. The panel includes a panel body. One outer wall of the panel body has an installation groove, and a connecting mechanism is fixedly installed on the inner wall of the installation groove. The other outer wall of the panel body has a connecting groove, and a positioning component is installed on one inner wall of the connecting groove. Both inner walls of the connecting groove have rib grooves. One outer wall of the panel body has a recess, and the other outer wall of the panel body has a protrusion. By providing a connecting mechanism on the panel body, and the connecting groove on the other side of the panel body, it is convenient to splice two panel bodies. When splicing the sides of the panel bodies, the recess and protrusion cooperate. The cooperation between the positioning groove and the positioning component on the connecting seat facilitates quick positioning of the two spliced ​​panel bodies, solving the problem of inconvenient splicing of existing fireproof and explosion-proof panels.

Description

Technical Field

[0001] This invention relates to the field of fireproof and explosion-proof panel technology, specifically to a tunnel fireproof and explosion-proof panel and its preparation method. Background Technology

[0002] A tunnel is an engineering structure buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels. The tunnel structure comprises two parts: the main building and auxiliary equipment. The main building consists of the tunnel body and portals, while auxiliary equipment includes passing bays, fire-fighting facilities, emergency communication systems, and drainage systems. Longer tunnels also have specialized ventilation and lighting equipment. The construction of tunnels requires a large amount of fireproof and explosion-proof panels. These panels possess advantages such as lightweight, high strength, impact resistance, durability, and fire resistance, and are widely used in flammable and explosive environments such as power plants, nuclear power plants, petrochemical plants, pharmaceutical plants, drilling platforms, warehouses, airports, railways, and subway facilities. In the event of an accident, they can effectively absorb most of the impact force generated by an explosion, preventing further spread of fire and ensuring the safety of people's lives and property.

[0003] In practical use, existing fireproof and explosion-proof panels are often combined from multiple panels for convenience. However, the combination of these panels involves a large number of bolts, which results in relatively low efficiency during assembly and complicated disassembly later. Summary of the Invention

[0004] The purpose of this invention is to provide a tunnel fireproof and explosion-proof panel and its preparation method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tunnel fireproof and explosion-proof panel, comprising a panel body, an installation groove formed on one outer wall of the panel body, and a connecting mechanism fixedly installed on the inner wall of the installation groove; a connecting groove formed on the other outer wall of the panel body, and a positioning component installed on one inner wall of the connecting groove; rib grooves formed on both inner walls of the connecting groove; a groove formed on one outer wall of the panel body, and a protruding strip installed on the other outer wall of the panel body, the specifications of the protruding strip matching the specifications of the groove; a circular groove formed on one outer wall of the panel body, and a rotating column rotatably connected to the connecting mechanism is rotatably connected to the inner wall of the circular groove.

[0006] Preferably, the connecting mechanism includes a connecting seat fixedly connected to the inner wall of the mounting groove, and the specifications of the connecting seat match the specifications of the connecting groove. A positioning groove is provided on one outer wall of the connecting seat, and a mounting cavity is provided inside the connecting seat. Both inner walls of the mounting cavity are provided with ridges, and the inner walls of the two ridges are slidably connected with prisms, and the specifications of the prisms match the specifications of the ridge grooves.

[0007] Preferably, the inner wall of the mounting cavity is fixedly connected to two symmetrically arranged support seats, and a lead screw is rotatably connected between the two support seats and the inner walls on both sides of the mounting cavity. The same worm gear is rotatably connected to the outer wall of the opposite side of the two support seats, and the two drive shafts of the worm gear are respectively fixedly connected to the two lead screws. A worm is rotatably connected to the inner wall of one side of the mounting cavity, and the worm and the worm gear mesh with each other. The drive shaft of the worm is fixedly connected to the rotating column.

[0008] Preferably, the outer walls of both lead screws are screwed with threaded sleeves, and the outer walls of both threaded sleeves are rotatably connected to connecting plates. One end of each of the two connecting plates is rotatably connected to the same sliding frame, and the sliding frame is slidably connected to the inner wall of the mounting cavity.

[0009] Preferably, two symmetrically arranged fixing rods are fixedly connected to the inner walls of both sides of the mounting cavity, and springs are sleeved on the outer walls of the four fixing rods. Two drive seats are slidably connected to the outer walls of the four fixing rods, and the two drive seats are fixedly connected to the outer walls of the two prisms. Steel ropes are fixedly connected to the outer walls of the two drive seats on opposite sides.

[0010] Preferably, the inner wall of the mounting cavity is rotatably connected to two symmetrically arranged fixed pulleys, and the two steel ropes pass through the two fixed pulleys and are fixedly connected to the sliding frame.

[0011] Preferably, the positioning component includes a positioning seat fixedly connected to the inner wall of the connecting groove, and the specifications of the positioning seat match the specifications of the positioning groove.

[0012] Preferably, the inner wall of the positioning seat has an adjustment cavity, and the inner wall of the adjustment cavity is slidably connected to a contact seat, and a rubber pad is fixedly connected to one side of the outer wall of the contact seat.

[0013] Preferably, the same connecting rod is fixedly connected to the inner walls of both sides of the adjustment cavity, and a fixed seat is fixedly connected to the inner wall of the adjustment cavity. The connecting rod is installed through the fixed seat. Two symmetrically arranged sliding sleeves are slidably connected to the outer wall of the connecting rod, and a support plate is rotatably connected to the outer wall of each of the two sliding sleeves. A drive frame is rotatably connected to one end of each of the two support plates, and the drive frame is fixedly connected to the contact seat. Two symmetrically arranged springs are sleeved on the outer wall of the connecting rod.

[0014] A method for preparing fireproof and explosion-proof tunnel panels includes the following steps: S1: Material selection: Prepare the base metal composite board for the board body; the flame retardant for the fireproof layer is expanded graphite, aluminum hydroxide and borates; the adhesive is high-temperature resistant inorganic glue; other materials include ceramic micro powder, glass fiber mesh cloth and carbon fiber cloth; the base material should meet the requirements of high temperature resistance and high impact strength. S2: Material processing. The surface of the prepared metal composite plate is cleaned, mainly to remove oil and impurities from the metal composite plate. During the processing, the metal substrate is sandblasted to enhance the adhesion. S3: Fireproof layer preparation. Prepare a mixing container and mix the flame retardant and binder in a quantitative manner. The flame retardant contains 25% expanded graphite, 15% aluminum hydroxide and 10% borate. The binder contains 42% silica sol and 8% other materials. Pour the prepared materials into the mixing container and stir to mix. The stirring speed is less than 450 rpm and the time is 40 minutes to form a slurry. During the stirring process, the mixing container can be appropriately heated to improve the mixing efficiency. S4: Coating. First, fix the substrate in the mold, then pour the mixed slurry into the mold to coat the fireproof material evenly on the surface of the substrate. During the coating process, filter the slurry to avoid impurities in the mixing container from affecting the performance of the fireproof layer. The thickness of the fireproof layer is 3-4 mm. When coating the second layer of slurry, first lay the fiberglass mesh cloth, which is laid in a bidirectional cross pattern. S5: Lamination. After coating, the substrate is placed in the designated position, and then another substrate is pressed together by a hot press. The temperature during pressing is controlled at 180-250 degrees Celsius, the pressure is 6MPa, and the pressing time is 40 minutes. S6: Surface treatment. The pressed and molded board is cured at room temperature for 20 hours, and then dried at 50-60 degrees Celsius for 6 hours. During the drying process, check whether the fireproof coating is completely hardened and adjust the drying time according to the actual situation. After drying, fireproof sealant can be sprayed on the surface. The curing temperature needs to be strictly controlled. Too high a temperature may cause the coating to crack. S7: Testing. The prepared fireproof and explosion-proof boards are subjected to fireproof and explosion-proof tests. The test results are compared with national standards to determine whether the boards are qualified. S8: Secondary processing involves cutting qualified boards and then grooving them. This includes creating connecting grooves, ridge grooves, mounting grooves, recessed grooves, and round grooves. After grooving, the connecting mechanism is fixed in the mounting groove to facilitate the splicing of the boards.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting a connecting mechanism on the plate body, the connecting mechanism and the connecting groove on the other side of the plate body facilitate the splicing of two plate bodies. When the sides of the plate bodies are spliced, they cooperate through grooves and protrusions. When the two adjustable prisms in the connecting mechanism extend, they facilitate the fixed connection of the two plate bodies. The cooperation between the positioning groove and the positioning component on the connecting seat facilitates the quick positioning of the two spliced ​​plate bodies. The rotation of the two screws in the connecting seat drives the threaded sleeves to move towards or away from each other. When the two threaded sleeves move away from each other, they cooperate with the connecting plate to pull the sliding frame down. When the sliding frame moves down, it cooperates with the steel rope to pull the two prisms towards each other. When the two prisms move towards each other, they directly compress the spring on the fixing rod. When the spring returns to its original position, it facilitates the extension of the prisms. This solves the problem of the inconvenience of splicing existing fireproof and explosion-proof plates. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional unfolded structure of the present invention; Figure 2 This is a schematic diagram of the positioning component structure of the present invention; Figure 3 This is a schematic diagram of the plate body structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the connection mechanism of the present invention. Figure 5 This is a schematic diagram of the connection mechanism structure of the present invention; Figure 6 This is a three-dimensional structural diagram of the positioning component of the present invention; Figure 7 This is a cross-sectional view of the positioning component of the present invention.

[0017] In the diagram: 1. Plate body; 2. Connecting groove; 3. Positioning component; 4. Rib groove; 5. Protrusion; 6. Circular groove; 7. Rotating column; 8. Connecting mechanism; 9. Groove; 10. Mounting groove; 11. Connecting seat; 12. Positioning groove; 13. Mounting cavity; 14. Prism; 15. Support seat; 16. Worm gear; 17. Worm wheel; 18. Lead screw; 19. Threaded sleeve; 20. Connecting plate; 21. Sliding frame; 22. Drive seat; 23. Fixed pulley; 24. Steel rope; 25. Fixed rod; 26. Spring 1; 27. Positioning seat; 28. Adjustment cavity; 29. ​​Drive frame; 30. Contact seat; 31. Rubber pad; 32. Support plate; 33. Fixed seat; 34. Connecting rod; 35. Sliding sleeve; 36. Spring 2. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-7 This invention provides a technical solution for a tunnel fireproof and explosion-proof panel and its preparation method: A tunnel fireproof and explosion-proof panel includes a panel body 1. An installation groove 10 is formed on one outer wall of the panel body 1, and a connecting mechanism 8 is fixedly installed on the inner wall of the installation groove 10. A connecting groove 2 is formed on the other outer wall of the panel body 1, and a positioning component 3 is installed on one inner wall of the connecting groove 2. Rib grooves 4 are formed on both inner walls of the connecting groove 2. A groove 9 is formed on one outer wall of the panel body 1, and a protruding strip 5 is installed on the other outer wall of the panel body 1. The specifications of strip 5 and groove 9 are matched. A circular groove 6 is provided on one outer wall of the plate body 1, and a rotating column 7 connected to the connecting mechanism 8 is rotatably connected to the inner wall of the circular groove 6. The installation groove 10 on the plate body 1 facilitates the installation of the connecting mechanism 8. The connecting mechanism 8, together with the connecting groove 2, facilitates the quick splicing of two fireproof and explosion-proof plates. The cooperation between the protruding strip 5 and the groove 9 facilitates the locking of the fireproof and explosion-proof plates, improving the stability of the fireproof and explosion-proof plates. The setting of the rotating column 7 facilitates the adjustment of the connecting mechanism 8, thereby realizing the splicing of the plate body 1.

[0020] Please see Figure 3-5The connecting mechanism 8 includes a connecting seat 11 fixedly connected to the inner wall of the mounting groove 10, and the specifications of the connecting seat 11 match the specifications of the connecting groove 2. A positioning groove 12 is provided on one outer wall of the connecting seat 11, and a mounting cavity 13 is provided inside the connecting seat 11. Both inner walls of the mounting cavity 13 are provided with ridges, and prisms 14 are slidably connected to the inner walls of the two ridges. The specifications of the prisms 14 match the specifications of the ridge grooves 4. The opening of the mounting cavity 13 in the connecting seat 11 facilitates the sliding installation of the two prisms 14. When the prisms 14 extend and are inserted into the ridge grooves 4, the two plate bodies 1 can be spliced. Two symmetrically arranged support seats 15 are fixedly connected to the inner wall of the mounting cavity 13, and screw rods 18 are rotatably connected between the two support seats 15 and the inner walls of both sides of the mounting cavity 13. The same worm gear 17 is rotatably connected to the outer wall of the two support seats 15 on opposite sides, and the two drive shafts of the worm gear 17 are respectively fixedly connected to the two screw rods 18. A worm gear 16 is rotatably connected to the inner wall, and the worm gear 16 and the worm wheel 17 mesh with each other. The drive shaft of the worm gear 16 is fixedly connected to the rotating column 7. The two lead screws 18 are conveniently installed by the support base 15. The installation of the worm wheel 17 between the two support bases 15 facilitates the synchronous rotation of the two lead screws 18. The rotating column 7 drives the worm gear 16 to rotate, and then the worm gear 16 drives the worm wheel 17 to rotate. The outer walls of the two lead screws 18 are screwed with threaded sleeves 19, and the outer walls of the two threaded sleeves 19 are rotatably connected with connecting plates 20. One end of the two connecting plates 20 is rotatably connected to the same sliding frame 21, and the sliding frame 21 is slidably connected to the inner wall of the mounting cavity 13. The worm wheel 17 drives the two lead screws 18 to rotate synchronously, which facilitates the movement of the two threaded sleeves 19 towards or away from each other. When the two threaded sleeves 19 move towards each other, they cooperate with the connecting plate 20 to drive the sliding frame 21 to move upward. Conversely, when the two threaded sleeves 19 move away from each other, they cooperate with the connecting plate 20 to drive the sliding frame 21 to move downward.

[0021] Please see Figure 4-5 Two symmetrically arranged fixing rods 25 are fixedly connected to the inner walls of both sides of the mounting cavity 13, and springs 26 are sleeved on the outer walls of the four fixing rods 25. Two drive seats 22 are slidably connected to the outer walls of the four fixing rods 25, and the two drive seats 22 are fixedly connected to the outer walls of the two prisms 14. Steel ropes 24 are fixedly connected to the outer walls of the two drive seats 22 on opposite sides. The fixing rods 25 in the mounting cavity 13 facilitate the installation of springs 26. Under normal conditions, springs 26 cooperate with drive seats 22 to drive prisms 14 to extend. When prisms 14 are retracted into the mounting cavity 13, they compress springs 26 on the fixing rods 25. Two symmetrically arranged fixed pulleys 23 are rotatably connected to the inner wall of the mounting cavity 13. Two steel ropes 24 pass through the two fixed pulleys 23 and are fixedly connected to the sliding frame 21. The fixed pulleys 23 and steel ropes 24 facilitate the movement of the two drive seats 22 through the sliding frame 21, thus facilitating the adjustment of the position of the prisms 14.

[0022] Please see Figure 6-7 The positioning component 3 includes a positioning seat 27 fixedly connected to the inner wall of the connecting groove 2, and the specifications of the positioning seat 27 match those of the positioning groove 12. The opening of the connecting groove 2 facilitates the installation of the positioning seat 27. The positioning seat 27 facilitates quick positioning of the connecting seat 11 in conjunction with the positioning groove 12. An adjustment cavity 28 is provided on the inner wall of the positioning seat 27, and a contact seat 30 is slidably connected to the inner wall of the adjustment cavity 28. A rubber pad 31 is fixedly connected to one outer wall of the contact seat 30. The opening of the adjustment cavity 28 facilitates the sliding installation of the contact seat 30, and the setting of the contact seat 30 facilitates the installation of the rubber pad 31. The setting of the rubber pad 31 effectively reduces wear between the contact seat 30 and the connecting seat 11. The two sides of the adjustment cavity 28... The inner wall of the side is fixedly connected to the same connecting rod 34, and the inner wall of the adjusting cavity 28 is fixedly connected to the fixed seat 33. The connecting rod 34 is installed through the fixed seat 33. The outer wall of the connecting rod 34 is slidably connected to two symmetrically arranged sliding sleeves 35, and the outer walls of the two sliding sleeves 35 are rotatably connected to the support plate 32. One end of the two support plates 32 is rotatably connected to the drive frame 29, and the drive frame 29 is fixedly connected to the contact seat 30. The outer wall of the connecting rod 34 is sleeved with two symmetrically arranged springs 36. When the connecting seat 11 presses against the contact seat 30, the support plate 32 directly pushes the two sliding sleeves 35 to compress the springs 36, thereby facilitating the reverse pressing of the connecting seat 11 and improving the stable connection of the connecting seat 11.

[0023] A method for preparing fireproof and explosion-proof tunnel panels includes the following steps: S1: Material selection: Prepare the base metal composite board for the board body; the flame retardant for the fireproof layer is expanded graphite, aluminum hydroxide and borates; the adhesive is high-temperature resistant inorganic glue; other materials include ceramic micro powder, glass fiber mesh cloth and carbon fiber cloth; the base material should meet the requirements of high temperature resistance and high impact strength. S2: Material processing. The surface of the prepared metal composite plate is cleaned, mainly to remove oil and impurities from the metal composite plate. During the processing, the metal substrate is sandblasted to enhance the adhesion. S3: Fireproof layer preparation. Prepare a mixing container and mix the flame retardant and binder in a quantitative manner. The flame retardant contains 25% expanded graphite, 15% aluminum hydroxide and 10% borate. The binder contains 42% silica sol and 8% other materials. Pour the prepared materials into the mixing container and stir to mix. The stirring speed is less than 450 rpm and the time is 40 minutes to form a slurry. During the stirring process, the mixing container can be appropriately heated to improve the mixing efficiency. S4: Coating. First, fix the substrate in the mold, then pour the mixed slurry into the mold to coat the fireproof material evenly on the surface of the substrate. During the coating process, filter the slurry to avoid impurities in the mixing container from affecting the performance of the fireproof layer. The thickness of the fireproof layer is 3-4 mm. When coating the second layer of slurry, first lay the fiberglass mesh cloth, which is laid in a bidirectional cross pattern. S5: Lamination. After coating, the substrate is placed in the designated position, and then another substrate is pressed together by a hot press. The temperature during pressing is controlled at 180-250 degrees Celsius, the pressure is 6MPa, and the pressing time is 40 minutes. S6: Surface treatment. The pressed and molded board is cured at room temperature for 20 hours, and then dried at 50-60 degrees Celsius for 6 hours. During the drying process, check whether the fireproof coating is completely hardened and adjust the drying time according to the actual situation. After drying, fireproof sealant can be sprayed on the surface. The curing temperature needs to be strictly controlled. Too high a temperature may cause the coating to crack. S7: Testing. The prepared fireproof and explosion-proof boards are subjected to fireproof and explosion-proof tests. The test results are compared with national standards to determine whether the boards are qualified. S8: Secondary processing involves cutting qualified boards and then grooving them. This includes creating connecting grooves 2, ridge grooves 4, mounting grooves 10, recesses 9, and round grooves 8 on the boards. After grooving, the connecting mechanism 8 is fixed in the mounting groove 10 to facilitate the splicing of the boards.

[0024] Working principle: When two fireproof and explosion-proof panels need to be spliced, the connecting seat 11 on the body 1 of one explosion-proof panel is inserted into the connecting groove 2 on the body 1 of the other explosion-proof panel. Before insertion, the rotating column 7 is rotated. When the rotating column 7 rotates, it drives the worm gear 16 to rotate. When the worm gear 16 rotates, it directly drives the worm wheel 17 to drive the two lead screws 18 to rotate. When the lead screws 18 rotate, they drive the two threaded sleeves 19 to move apart. When the two threaded sleeves 19 move apart, they directly pull the sliding frame 21 down, which in turn, in conjunction with the steel rope 24, pulls the two drive seats 22 to move towards each other. The prism 14 is directly driven into the connecting seat 11. Then the connecting seat 11 is inserted into the connecting groove 2, so that the positioning groove 12 is aligned with the positioning component 3. When the connecting seat 11 is fully inserted, it squeezes the positioning component 3. At this time, the rotating column 7 is rotated in the opposite direction, driving the two lead screws 18 to rotate and drive the two threaded sleeves 19 to move towards each other. When the two threaded sleeves 19 move towards each other, they directly cooperate with the connecting plate 20 to push the sliding frame 21 to reset. At this time, the prism 14 extends out under the action of the spring 26. When the prism 14 is inserted into the prism groove 4, the two explosion-proof plates can be spliced ​​together. During the process of inserting the connecting seat 11 into the connecting groove 2, the connecting seat 11 and the rubber pad 31 come into contact, thereby pushing the contact seat 30 to cooperate with the support plate 32 to drive the two sliding sleeves 35 to move apart. When the two sliding sleeves 35 move apart, they directly compress the spring 36 on the connecting rod 34, thereby improving the connection stability of the connecting seat 11.

[0025] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A fireproof and explosion-proof tunnel panel, comprising a panel body (1), characterized in that: The outer wall of one side of the plate body (1) is provided with an installation groove (10), and the inner wall of the installation groove (10) is fixedly installed with a connecting mechanism (8). The outer wall of the other side of the plate body (1) is provided with a connecting groove (2), and the inner wall of one side of the connecting groove (2) is provided with a positioning component (3). The inner walls of both sides of the connecting groove (2) are provided with rib grooves (4). The outer wall of one side of the plate body (1) is provided with a groove (9), and the outer wall of the other side of the plate body (1) is provided with a protrusion (5). The specifications of the protrusion (5) match the specifications of the groove (9). The outer wall of one side of the plate body (1) is provided with a circular groove (6), and the inner wall of the circular groove (6) is rotatably connected to a rotating column (7) connected to the connecting mechanism (8).

2. The tunnel fireproof and explosion-proof panel according to claim 1, characterized in that: The connecting mechanism (8) includes a connecting seat (11) fixedly connected to the inner wall of the mounting groove (10), and the specifications of the connecting seat (11) match the specifications of the connecting groove (2). A positioning groove (12) is provided on one side of the outer wall of the connecting seat (11). An mounting cavity (13) is provided inside the connecting seat (11), and ridge openings are provided on both sides of the inner wall of the mounting cavity (13). A prism (14) is slidably connected to the inner wall of the two ridge openings, and the specifications of the prism (14) match the specifications of the ridge groove (4).

3. A tunnel fireproof and explosion-proof panel according to claim 2, characterized in that: The inner wall of the mounting cavity (13) is fixedly connected to two symmetrically arranged support seats (15), and a lead screw (18) is rotatably connected between the two support seats (15) and the inner walls on both sides of the mounting cavity (13). The two support seats (15) are rotatably connected to the same worm wheel (17) on opposite outer walls, and the two drive shafts of the worm wheel (17) are fixedly connected to the two lead screws (18) respectively. A worm (16) is rotatably connected to one inner wall of the mounting cavity (13), and the worm (16) and the worm wheel (17) mesh with each other. The drive shaft of the worm (16) is fixedly connected to the rotating column (7).

4. A tunnel fireproof and explosion-proof panel according to claim 3, characterized in that: Both lead screws (18) have threaded sleeves (19) screwed onto their outer walls, and both threaded sleeves (19) have connecting plates (20) rotatably connected to their outer walls. One end of each connecting plate (20) is rotatably connected to the same sliding frame (21), and the sliding frame (21) is slidably connected to the inner wall of the mounting cavity (13).

5. A tunnel fireproof and explosion-proof panel according to claim 4, characterized in that: The inner walls of both sides of the mounting cavity (13) are fixedly connected to two symmetrically arranged fixing rods (25), and the outer walls of the four fixing rods (25) are all sleeved with springs (26). The outer walls of the four fixing rods (25) are respectively slidably connected to two drive seats (22), and the two drive seats (22) are respectively fixedly connected to the outer walls of the two prisms (14). The outer walls of the two drive seats (22) on opposite sides are fixedly connected to steel ropes (24).

6. A tunnel fireproof and explosion-proof panel according to claim 5, characterized in that: The inner wall of the mounting cavity (13) is rotatably connected to two symmetrically arranged fixed pulleys (23), and the two steel ropes (24) pass through the two fixed pulleys (23) and are fixedly connected to the sliding frame (21).

7. A tunnel fireproof and explosion-proof panel according to claim 6, characterized in that: The positioning component (3) includes a positioning seat (27) fixedly connected to the inner wall of the connecting groove (2), and the specifications of the positioning seat (27) match the specifications of the positioning groove (12).

8. A tunnel fireproof and explosion-proof panel according to claim 7, characterized in that: The inner wall of the positioning seat (27) is provided with an adjustment cavity (28), and the inner wall of the adjustment cavity (28) is slidably connected with a contact seat (30), and a rubber pad (31) is fixedly connected to one side of the outer wall of the contact seat (30).

9. A tunnel fireproof and explosion-proof panel according to claim 8, characterized in that: The inner walls of both sides of the adjustment cavity (28) are fixedly connected to the same connecting rod (34). The inner wall of the adjustment cavity (28) is fixedly connected to a fixed seat (33). The connecting rod (34) is installed through the fixed seat (33). The outer wall of the connecting rod (34) is slidably connected to two symmetrically arranged sliding sleeves (35). The outer walls of the two sliding sleeves (35) are rotatably connected to a support plate (32). One end of the two support plates (32) is rotatably connected to a drive frame (29). The drive frame (29) is fixedly connected to a contact seat (30). The outer wall of the connecting rod (34) is sleeved with two symmetrically arranged springs (36).

10. A method for preparing a tunnel fireproof and explosion-proof panel as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Material selection: Prepare the base metal composite board for the board body; the flame retardant for the fireproof layer is expanded graphite, aluminum hydroxide and borates; the adhesive is high-temperature resistant inorganic glue; other materials include ceramic micro powder, glass fiber mesh cloth and carbon fiber cloth; the base material should meet the requirements of high temperature resistance and high impact strength. S2: Material processing. The surface of the prepared metal composite plate is cleaned, mainly to remove oil and impurities from the metal composite plate. During the processing, the metal substrate is sandblasted to enhance the adhesion. S3: Fireproof layer preparation. Prepare a mixing container and mix the flame retardant and binder in a quantitative manner. The flame retardant contains 25% expanded graphite, 15% aluminum hydroxide and 10% borate. The binder contains 42% silica sol and 8% other materials. Pour the prepared materials into the mixing container and stir to mix. The stirring speed is less than 450 rpm and the time is 40 minutes to form a slurry. During the stirring process, the mixing container can be appropriately heated to improve the mixing efficiency. S4: Coating. First, fix the substrate in the mold, then pour the mixed slurry into the mold to coat the fireproof material evenly on the surface of the substrate. During the coating process, filter the slurry to avoid impurities in the mixing container from affecting the performance of the fireproof layer. The thickness of the fireproof layer is 3-4 mm. When coating the second layer of slurry, first lay the fiberglass mesh cloth, which is laid in a bidirectional cross pattern. S5: Lamination. After coating, the substrate is placed in the designated position, and then another substrate is pressed together by a hot press. The temperature during pressing is controlled at 180-250 degrees Celsius, the pressure is 6MPa, and the pressing time is 40 minutes. S6: Surface treatment. The pressed and molded board is cured at room temperature for 20 hours, and then dried at 50-60 degrees Celsius for 6 hours. During the drying process, check whether the fireproof coating is completely hardened and adjust the drying time according to the actual situation. After drying, fireproof sealant can be sprayed on the surface. The curing temperature needs to be strictly controlled. Too high a temperature may cause the coating to crack. S7: Testing. The prepared fireproof and explosion-proof boards are subjected to fireproof and explosion-proof tests. The test results are compared with national standards to determine whether the boards are qualified. S8: Secondary processing, cut the qualified board into sections, and groove the cut board into sections. The main sections are connecting groove (2), ridge groove (4), installation groove (10), recess (9) and round groove (8). After grooving, the connecting mechanism (8) is fixed in the installation groove (10) to facilitate splicing of the board.

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