An anti-impact civil defense door structure

Abstract

The application relates to the technical field of civil air defense projects, in particular to an anti-impact civil air defense door structure which comprises a door frame and a door body, the door body comprises a door mounting frame, a clamping frame is arranged on the door mounting frame, a fireproof heat-resistant plate, a reinforced concrete plate, a first damping buffer plate, a radiation-proof plate, a second damping buffer plate and a pressure-bearing plate are sequentially clamped in the door mounting frame in a direction away from the clamping frame, and a limiting frame is detachably connected to the door mounting frame; the door frame comprises a frame body, a movable plug plate assembly and an opening and closing assembly arranged on the frame body, the movable plug plate assembly comprises a first plug plate layer, a second plug plate layer and a third plug plate layer which are detachably connected to the opening and closing assembly and can be sequentially inserted on the side surfaces of the first damping buffer plate, the second damping buffer plate and the limiting frame. The application has the effect of conveniently reopening the civil air defense door.

Description

Technical Field

[0001] This application relates to the technical field of civil defense engineering, and in particular to an impact-resistant civil defense door structure. Background Technology

[0002] Civil defense doors are protective devices installed at the entrances and exits of civil defense projects. Civil defense doors are usually in the open state. In the event of a disaster, people can enter the civil defense project, close the civil defense doors to resist the disaster, and open the civil defense doors to exit when the disaster ends.

[0003] In existing technology, the structure of a civil defense door includes a door body and a door frame. The door body is rotatably mounted within the door frame via hinges, and a sealing rubber layer is installed between the door body and the door frame. In practical applications, civil defense doors must protect against and respond to various disasters, including physical impacts from mudslides, non-physical impacts from explosions, and high temperatures and toxic fumes from fires.

[0004] Regarding the aforementioned technologies, the inventors discovered that after civil defense doors protect against various disasters, the doors themselves can also suffer damage, especially from high-temperature impacts. This can cause damage to the hinges, melting and adhesion of the sealing rubber layer, and deformation of the door or frame, making it difficult to reopen the door. This can trap people inside the civil defense facility and increase the difficulty of subsequent rescue efforts. Summary of the Invention

[0005] In order to facilitate the reopening of air-raid shelter doors after they have been damaged or deformed by high-temperature impact, this application provides an impact-resistant air-raid shelter door structure.

[0006] The impact-resistant air defense door structure provided in this application adopts the following technical solution:

[0007] An impact-resistant air defense door structure includes a door frame and a door body. The door body includes a door mounting frame hinged to the door frame. A locking frame is provided on the inner wall of the door mounting frame. Along the direction away from the locking frame, a fireproof and heat-resistant plate, a reinforced concrete plate, a first damping buffer plate, a radiation shielding plate, a second damping buffer plate, and a pressure-bearing plate are sequentially locked in the door mounting frame. A limiting frame for locking the pressure-bearing plate is detachably connected to one end of the door mounting frame away from the locking frame.

[0008] The door frame includes a frame body, a movable insert plate assembly, and an opening and closing assembly disposed on the frame body for driving the movable insert plate assembly. The movable insert plate assembly includes a first insert plate layer, a second insert plate layer, and a third insert plate layer detachably connected to the opening and closing assembly. The first insert plate layer, the second insert plate layer, and the third insert plate layer can be sequentially inserted into the side of the first damping buffer plate, the second damping buffer plate, and the limiting frame.

[0009] By adopting the above technical solution, after the door body is closed on the door frame, the opening and closing component drives the movable insert plate component. The first insert plate layer is inserted into the side of the first damping buffer plate, the second insert plate layer is inserted into the side of the second damping buffer plate, and the third insert plate layer is inserted into the side of the limiting frame, thus fixing the door body to the door frame. After the air-raid shelter door is impacted, the hinge part is damaged, and the door mounting frame and the frame body are deformed and stuck together, the third insert plate layer, the limiting frame, the pressure plate, the second damping buffer plate, the second insert plate layer, the radiation shielding plate, the first damping buffer plate, the first insert plate layer, and the reinforced concrete can be disassembled sequentially from the inside. The fireproof and heat-resistant board and the reinforced concrete board can be disassembled sequentially after the fastening frame is cut off from the outside. The fireproof and heat-resistant board, the reinforced concrete board, the first damping buffer board, the first insert plate layer, the radiation shielding board, the second damping buffer board, the second insert plate layer, the pressure plate, the limiting frame and the third insert plate layer can be disassembled in sequence, which makes it easy to reopen the air-raid shelter door. The first damping buffer board and the second damping buffer board can serve as a buffer structure to reduce the damage to the door when it is impacted. At the same time, they can also protect the first insert plate layer and the second insert plate layer, reduce the probability of deformation of the first insert plate layer and the second insert plate layer, and facilitate the disassembly of the first insert plate layer and the second insert plate layer.

[0010] Optionally, a triangular truncated pyramid is provided on the corner of the door mounting frame. The triangular truncated pyramid is made of damping material. The upper bottom surface of the triangular truncated pyramid abuts against the inner side of the locking frame. The triangular truncated pyramid is detachably connected to the limiting frame. The cross-sectional area of ​​the triangular truncated pyramid gradually increases from the direction away from the locking frame to the direction near the limiting frame.

[0011] The two sides of the triangular truncated pyramid that abut against the door mounting frame are called abutting surfaces, and the other side of the triangular truncated pyramid is called a snap-fit ​​surface. Chamfered surfaces for abutting against the snap-fit ​​surface are provided on the corners of the fireproof and heat-resistant board, the reinforced concrete board, the first damping buffer board, the radiation shielding board, the second damping buffer board, and the pressure plate.

[0012] By adopting the above technical solution, the triangular truncated pyramid made of damping material can play a buffering role. Combined with the first and second damping buffer plates, this gives the door better impact resistance. When both the locking frame and the limiting frame are present, the contact surface of the triangular truncated pyramid abuts against the inner frame wall of the door mounting frame. The contact surface and the chamfered bevel cooperate to stably install the fire-resistant and heat-resistant board, reinforced concrete slab, first damping buffer plate, radiation shielding plate, second damping buffer plate, and pressure plate within the door mounting frame. After removing the limiting frame, it can be easily... Removing the triangular truncated pyramid facilitates the sequential disassembly of the pressure-bearing plate, second damping buffer plate, second insert plate layer, radiation shielding plate, first damping buffer plate, first insert plate layer, reinforced concrete slab, and fire-resistant and heat-resistant plate from the inside. After cutting the clamping frame, with the cooperation of the clamping surface and the beveled corner, it is easy to sequentially disassemble the fire-resistant and heat-resistant plate, reinforced concrete slab, first damping buffer plate, first insert plate layer, radiation shielding plate, second damping buffer plate, second insert plate layer, pressure-bearing plate, limiting frame, and third insert plate layer from the outside, thereby facilitating the reopening of the air-raid shelter door.

[0013] Optionally, a plurality of insertion through holes are provided on the inner frame wall of the frame body, a first slot for inserting the first insert plate layer is provided on the side of the first damping buffer plate, a second slot for inserting the second insert plate layer is provided on the side of the second damping buffer plate, a plurality of clearance through holes are provided on the side wall of the door mounting frame, the clearance through holes are connected to the first slot or the second slot, and an insertion notch for securing the third insert plate layer is provided on the limiting frame.

[0014] By adopting the above technical solution, after the frame body has a through hole for insertion and the door mounting frame has a clearance through hole, the first insert plate layer in the frame body can be inserted into the first slot, the second insert plate layer in the frame body can be inserted into the second slot, and after the limiting frame has a notch for insertion, the third insert plate layer in the frame body can be inserted into the notch for insertion. This allows the door to be fixed on the door frame, and when the door is impacted, the force between the door and the door frame is also distributed by the first insert plate layer, the second insert plate layer, and the third insert plate layer, thereby improving the door's impact resistance.

[0015] Optionally, the opening and closing assembly includes a mounting plate disposed within the frame body, wherein the first insert layer, the second insert layer, and the third insert layer are detachably connected to the mounting plate.

[0016] By adopting the above technical solution, after the first insert layer, the second insert layer, and the third insert layer are detachably connected to the mounting plate, the first insert layer, the second insert layer, and the third insert layer can be moved simultaneously through the mounting plate, which facilitates the simultaneous insertion and fixing of the first insert layer, the second insert layer, and the third insert layer into the door body.

[0017] Optionally, a positioning strip is provided on the surface of the mounting plate, and a locking block is provided at both ends of the positioning strip, the locking block being located on the side of the positioning strip away from the mounting plate;

[0018] The first insert plate layer, the second insert plate layer, and the third insert plate layer have the same structure, including two end plates, a middle plate disposed between the two end plates, and a combined screw inserted into the two end plates and the middle plate. An end slot adapted to the positioning strip is provided on the end plate away from the combined screw. A locking groove adapted to the locking block is provided on the side wall of the end slot near the bottom of the slot. An insert groove adapted to the positioning strip is provided on the middle plate away from the combined screw.

[0019] By adopting the above technical solution, the slot and the locking block cooperate, and the end slot and the positioning strip cooperate, so that the end plate can be locked onto the mounting plate. After the combined screw is inserted into one end of the two end plates and the middle plate, the two end plates can be fixed onto the mounting plate. At the same time, the insertion slot and the positioning strip cooperate, so that the middle plate can be fixed onto the mounting plate. Since the combined screw is detachable, the first insertion plate layer, the second insertion plate layer and the third insertion plate layer can be detachably connected to the mounting plate. Moreover, at the end of the combined screw away from the positioning strip, when the first insertion plate layer, the second insertion plate layer or the third insertion plate layer is fixed onto the door body, the combined screw will be protected by the first damping buffer plate, the second damping buffer plate or the limiting frame, reducing the probability of deformation of the combined screw after the door body is subjected to impact. This makes it easy to remove the first insertion plate layer, the second insertion plate layer or the third insertion plate layer after disassembling the combined screw.

[0020] Optionally, a clearance notch is provided on the side of the end plate away from the middle plate, and the nut of the combined screw is disposed in the clearance notch.

[0021] By adopting the above technical solution, the clearance notch can protect the combined screw and reduce the probability of damage to the nut part of the combined screw.

[0022] Optionally, a sealing notch is provided on the outer wall of the door mounting frame, a sealing rubber layer is provided on the sealing notch, and a sealing protrusion is provided on the sealing rubber layer.

[0023] By adopting the above technical solution, after the door body covers the door frame, the door mounting frame is adapted to be set on the frame body through the sealing notch. The sealing rubber layer and sealing protrusion can seal the gap between the door mounting frame and the frame body, so that the air defense door has good sealing performance.

[0024] Optionally, the opening and closing assembly further includes a movable rack vertically disposed on the mounting plate away from the positioning strip plate, a driven gear meshing with the movable rack, a transmission shaft vertically disposed on the driven gear, and a wheel handle fixed to one end of the transmission shaft away from the driven gear, the wheel handle being disposed outside the frame body.

[0025] By adopting the above technical solution, the rotating wheel handle drives the driven gear to rotate through the transmission shaft, which in turn causes the moving rack to move the mounting plate, thereby facilitating the movement of the first insert layer, the second insert layer, and the third insert layer.

[0026] Optionally, a protective sleeve is vertically provided on the outer wall of the frame body, and the protective sleeve is sleeved on the transmission shaft.

[0027] By adopting the above technical solution, after the frame body is poured into the wall, the protective sleeve can protect the drive shaft and prevent the drive shaft from being fixed to the wall during the pouring process.

[0028] Optionally, an extension portion for increasing the contact area is provided on the outer frame wall of the frame body.

[0029] By adopting the above technical solution, an extension is provided on the outer frame wall of the frame body. After the frame body is cast into the wall, the contact area between the frame body and the wall can be increased, so that after the frame body bears the force, it is easier to distribute the force to the wall and improve the impact resistance of the door frame.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. By setting up a door body, door mounting frame, locking frame, fireproof and heat-resistant board, reinforced concrete slab, first damping buffer plate, radiation shielding plate, second damping buffer plate, pressure-bearing plate, limiting frame, door frame, frame body, movable insert plate assembly, first insert plate layer, second insert plate layer, third insert plate layer, and opening and closing assembly, after the door body is closed on the door frame, the opening and closing assembly drives the movable insert plate assembly. The first insert plate layer is inserted into the side of the first damping buffer plate, the second insert plate layer is inserted into the side of the second damping buffer plate, and the third insert plate layer is inserted into the side of the limiting frame, thus fixing the door body to the door frame. After the air-raid shelter door is impacted, the hinge part is damaged, and the door mounting frame and frame body are deformed and locked together, the third insert plate layer and the limiting frame can be disassembled sequentially from the inside. The structure consists of a pressure-bearing plate, a second damping buffer plate, a second insert plate layer, a radiation shielding plate, a first damping buffer plate, a first insert plate layer, a reinforced concrete slab, and a fire-resistant and heat-resistant plate. From the outside, only the retaining frame needs to be cut away to allow for the sequential disassembly of the fire-resistant and heat-resistant plate, reinforced concrete slab, first damping buffer plate, first insert plate layer, radiation shielding plate, second damping buffer plate, second insert plate layer, pressure-bearing plate, limiting frame, and third insert plate layer. This facilitates reopening the air-raid shelter door. The first and second damping buffer plates act as a buffer structure, reducing damage to the door when impacted. They also protect the first and second insert plate layers, reducing the probability of deformation and facilitating disassembly.

[0032] 2. By incorporating a truncated triangular prism, a snap-fit ​​surface, and a beveled edge, the truncated triangular prism made of damping material acts as a buffer, working in conjunction with the first and second damping buffer plates to enhance the door's impact resistance. When both the locking frame and the limiting frame are present, the contact surface of the truncated triangular prism abuts against the inner frame wall of the door mounting frame. The snap-fit ​​surface and the beveled edge work together to ensure the fire-resistant and heat-resistant board, reinforced concrete slab, first damping buffer plate, radiation shielding plate, second damping buffer plate, and pressure-bearing plate are stably installed within the door mounting frame. After removing the limiting frame... The triangular truncated pyramid can be easily disassembled, allowing for the sequential removal of the pressure plate, second damping buffer plate, second insert plate layer, radiation shielding plate, first damping buffer plate, first insert plate layer, reinforced concrete slab, and fire-resistant and heat-resistant plate from the inside. After cutting the clamping frame, the fire-resistant and heat-resistant plate, reinforced concrete slab, first damping buffer plate, first insert plate layer, radiation shielding plate, second damping buffer plate, second insert plate layer, pressure plate, limiting frame, and third insert plate layer can be easily removed from the outside, thus facilitating the reopening of the air-raid shelter door.

[0033] 3. By setting up an installation plate, positioning strip, locking block, end plate, end slot, slot, middle plate, insert groove, and combination screw, the slot and locking block cooperate, and the end slot and positioning strip cooperate, so that the end plate can be locked onto the installation plate. After the combination screw is inserted into one end of the two end plates and the middle plate, it can fix the two end plates onto the installation plate. At the same time, the insert groove and positioning strip cooperate, so that the middle plate can be fixed onto the installation plate. Since the combination screw is detachable, the first insert layer, the second insert layer, and the third insert layer can be detachably connected to the installation plate. Moreover, at the end of the combination screw away from the positioning strip, when the first insert layer, the second insert layer, or the third insert layer is fixed to the door body, the combination screw will be protected by the first damping buffer plate, the second damping buffer plate, or the limiting frame, reducing the probability of deformation of the combination screw after the door body is subjected to impact. This makes it easy to remove the first insert layer, the second insert layer, or the third insert layer after removing the combination screw. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of an impact-resistant air defense door structure as seen from within the protected area, according to an embodiment of this application.

[0035] Figure 2 This is a schematic diagram of an impact-resistant air defense door structure from the outside of the protected area, as described in an embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the door frame structure in an embodiment of this application.

[0037] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0038] Figure 5 yes Figure 3 Enlarged schematic diagram of part B.

[0039] Figure 6 This is a cross-sectional schematic diagram of the door body in an embodiment of this application.

[0040] Figure 7 This is a cross-sectional schematic diagram of the door frame in an embodiment of this application.

[0041] Figure 8 yes Figure 7 An enlarged schematic diagram of section C.

[0042] Explanation of reference numerals in the attached drawings: 1. Door frame; 11. Frame body; 111. Outer extension; 112. Insertion through hole; 12. Movable insert plate assembly; 121. First insert plate layer; 122. Second insert plate layer; 123. Third insert plate layer; 124. End plate; 1241. End slot; 1242. Slot; 1243. Clearance notch; 125. Middle plate; 1251. Insertion groove; 126. Combination screw; 13. Opening and closing assembly; 131. Mounting plate; 132. Positioning strip; 133. Locking block; 134. Moving rack; 135. Driven gear; 13 6. Drive shaft; 137. Wheel handle; 2. Door body; 21. Door mounting frame; 211. Clearance through hole; 212. Sealing notch; 22. Locking frame; 23. Fireproof and heat-resistant board; 24. Reinforced concrete slab; 25. First damping buffer plate; 251. First slot; 26. Radiation shield; 27. Second damping buffer plate; 271. Second slot; 28. Pressure plate; 29. ​​Limiting frame; 291. Insertion notch; 3. Triangular truncated pyramid; 31. Locking surface; 4. Chamfered bevel; 5. Sealing rubber layer; 51. Sealing protrusion; 6. Protective sleeve. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0044] This application discloses an impact-resistant air-raid shelter door structure. (Refer to...) Figure 1 and Figure 2 An impact-resistant civil defense door structure includes a door frame 1 and a door body 2 hinged to the door frame 1.

[0045] Reference Figure 1 and Figure 3 The door frame 1 includes a frame body 11, an opening and closing assembly 13 disposed on the frame body 11, and a movable insert plate assembly 12 detachably connected to the opening and closing assembly 13. In this embodiment, two opening and closing assemblies 13 and two movable insert plate assemblies 12 are provided, and the two movable insert plate assemblies 12 are symmetrically arranged on both sides of the frame body 11.

[0046] The frame body 11 is rectangular in shape, and an extension 111 is provided on the outer frame wall of the frame body 11. The extension 111 is rectangular in shape and its thickness is less than that of the frame body 11. The frame body 11 and the extension 111 are integrally formed. Since the door frame 1 of the air defense door is usually cast into the building wall, the extension 111 can increase the contact area between the frame body 11 and the wall, making it easier for the frame body 11 to transfer the force to the wall and improve the impact resistance of the door frame 1.

[0047] Reference Figure 3 and Figure 4A cavity is provided inside the frame body 11. The opening and closing assembly 13 includes a driven gear 135 rotatably disposed in the cavity of the frame body 11, a transmission shaft 136 vertically fixed to the middle of the driven gear 135, a wheel handle 137 fixed to the end of the transmission shaft 136 away from the driven gear 135, a movable rack 134 meshing with the driven gear 135, and a mounting plate 131 vertically fixed to the end of the movable rack 134 away from the outer extension 111.

[0048] In this embodiment, one end of the drive shaft 136 passes through the frame body 11, so that the wheel handle 137 is located outside the frame body 11 and within the protected area. This means that opening and closing the air-raid shelter door via the wheel handle 137 can only be done within the protected area. In another embodiment, both ends of the drive shaft 136 pass through the frame body 11, and wheel handles 137 are provided both inside and outside the protected area. This means that the air-raid shelter door can be opened and closed via the wheel handle 137 both inside and outside the protected area.

[0049] The drive shaft 136 is perpendicular to the frame body 11. A protective sleeve 6 is vertically fixed to the outer wall of the frame body 11. The protective sleeve 6 is sleeved on the drive shaft 136. When the frame body 11 is poured into the wall, the drive shaft 136 is protected to prevent the drive shaft 136 from being poured into the wall.

[0050] The rotating wheel handle 137 can drive the driven gear 135 to rotate via the transmission shaft 136, and drive the mounting plate 131 to move via the moving rack 134. The moving rack 134 is parallel to the frame body 11. Along the length direction of the moving rack 134, the mounting plate 131 can move closer to or further away from the outer extension 111.

[0051] Reference Figure 3 and Figure 5 The movable insert plate assembly 12 includes a multi-layer insert plate layer that is detachably connected to the mounting plate 131. The insert plate layer includes two end plates 124, a middle plate 125 disposed between the two end plates 124, and a combination screw 126 inserted into the two end plates 124 and the middle plate 125. The end plates 124 are trapezoidal plates, and the middle plate 125 is rectangular plates. Multiple insertion through holes 112 for inserting the insert plate layer are provided on the inner frame wall of the frame body 11.

[0052] Reference Figure 3 and Figure 6In this embodiment, the multi-layer insert plate consists of a first insert plate layer 121, a second insert plate layer 122, and a third insert plate layer 123 with identical structures. The first insert plate layer 121, the second insert plate layer 122, and the third insert plate layer 123 are spaced apart and pass through the insertion through hole 112. The first insert plate layer 121, the second insert plate layer 122, and the third insert plate layer 123 can be inserted into the door body 2, so that the door body 2 is fixed on the frame body 11. At the same time, after the door body 2 is subjected to impact force, the force is distributed to the frame body 11 through the first insert plate layer 121, the second insert plate layer 122, and the third insert plate layer 123, thereby improving the impact resistance of the door body 2.

[0053] Reference Figure 4 and Figure 5 Multiple positioning strips 132 are fixedly fixed at intervals on the surface of the mounting plate 131 away from the moving rack 134. A locking block 133 is fixedly fixed to both ends of each positioning strip 132, with the locking block 133 positioned on the side of the positioning strip 132 away from the mounting plate 131. An end slot 1241 adapted to the positioning strip 132 is provided on the end plate 124 away from the combining screw 126. A slot 1242 adapted to the locking block 133 is provided on the side wall of the end slot 1241 near the bottom of the slot. An insertion groove 1251 adapted to the positioning strip 132 is provided on the end of the middle plate 125 away from the combining screw 126.

[0054] The number of middle plates 125 is set according to the length of the insert layer. In this embodiment, there are four middle plates 125 and three positioning strips 132. Each positioning strip 132 is provided with four locking blocks 133. Along the length direction of the positioning strip 132, the cross-section of the positioning strip 132 and the locking blocks 133 is T-shaped. One end of the end slot 1241 and the slot 1242 is sealed, and the other end is open to form a T-shaped port. The insert groove 1251 is a rectangular groove with open ends.

[0055] The end slot 1241 engages with the positioning strip 132, and the slot 1242 engages with the locking block 133, so that the end plate 124 can be locked onto the positioning strip 132. The insertion slot 1251 engages with the positioning strip 132, so that the middle plate 125 can be locked onto the positioning strip 132. The combination screw 126 is located at the end of the two end plates 124 and the middle plate 125 away from the positioning strip 132. After the end plates 124 and the middle plate 125 are fixed together, the insertion plate layer can be detachably connected to the mounting plate 131.

[0056] Reference Figure 4 and Figure 6A through hole for inserting the combined screw 126 is provided on the end of the end plate 124 away from the end slot 1241. A clearance notch 1243 communicating with the through hole is provided on the side of the end plate 124 away from the middle plate 125. The end of the combined screw 126 is set in the clearance notch 1243. The clearance notch 1243 can protect the nut of the combined screw 126 and reduce the probability of external damage to the end of the combined screw 126.

[0057] Reference Figure 6 and Figure 7 The door body 2 includes a door mounting frame 21 hinged to the frame body 11, a locking frame 22 fixed to the inner frame wall of the door mounting frame 21, a fireproof and heat-resistant plate 23, a reinforced concrete plate 24, a first damping buffer plate 25, a radiation shielding plate 26, a second damping buffer plate 27, and a pressure plate 28 sequentially locked in the door mounting frame 21 in a direction away from the locking frame 22, and a limiting frame 29 detachably connected to the end of the door mounting frame 21 away from the locking frame 22.

[0058] Reference Figure 7 and Figure 8 The door mounting frame 21 is rectangular. A sealing notch 212 is provided on the outer frame wall of the door mounting frame 21. The door mounting frame 21 can be inserted into the frame body 11 through the sealing notch 212. At this time, the opening direction of the sealing notch 212 faces the inside of the protected area, and the sealing notch 212 can play a sealing role.

[0059] A sealing rubber layer 5 is provided on the sealing notch 212, and a sealing protrusion 51 is provided on the sealing rubber layer 5. Multiple sealing rubber layers 5 and sealing protrusions 51 are provided, and multiple sealing rubber layers 5 and sealing protrusions 51 are spaced apart on the sealing notch 212. Through the cooperation of the sealing rubber layer 5 and the sealing protrusions 51, the gap between the door mounting frame 21 and the frame body 11 can be better sealed, so that the sealing performance between the door mounting frame 21 and the frame body 11 is better.

[0060] Reference Figure 6 and Figure 8 Multiple clearance through holes 211 for inserting the insert plate are provided on the outer frame wall of the door mounting frame 21. The clearance through holes 211 are spaced apart on the surface of the sealing notch 212 facing the inner frame wall of the frame body 11, so that the first insert plate layer 121 and the second insert plate layer 122 can be inserted into the door mounting frame 21.

[0061] The fireproof and heat-resistant plate 23, the reinforced concrete plate 24, the first damping buffer plate 25, the radiation shielding plate 26, the second damping buffer plate 27, and the pressure plate 28 are all rectangular plates with the same length and width. The thickness is set according to the situation. A first slot 251 for inserting the first insert plate layer 121 is opened on the side of the first damping buffer plate 25, and a second slot 271 for inserting the second insert plate layer 122 is opened on the side of the second damping buffer plate 27. In this embodiment, there are two first slots 251, which are symmetrically arranged on both sides of the first damping buffer plate 25. There are two second slots 271, which are symmetrically arranged on both sides of the second damping buffer plate 27.

[0062] The first insert plate layer 121 is inserted into the first slot 251. The first damping buffer plate 25 can protect and reduce the shock of the first insert plate layer 121. After the second insert plate layer 122 is inserted into the second slot 271, the second damping buffer plate 27 can protect and reduce the shock of the second insert plate layer 122. This improves the impact resistance of the air defense door, reduces the probability of deformation of the combined screw 126, and facilitates the disassembly of the first insert plate layer 121 and the second insert plate layer 122.

[0063] In this embodiment, the fireproof and heat-resistant plate 23 is made of fire-resistant material, and a fire-resistant coating is applied to the surface of the fireproof and heat-resistant plate 23, giving the door 2 good heat insulation and fire resistance; the reinforced concrete plate 24 is formed by pouring concrete through a steel skeleton, and before the reinforced concrete plate 24 breaks, it can convert the solid impact into force and distribute it to the first damping buffer plate 25, thereby improving the impact resistance of the door 2; the first damping buffer plate 25 and the second damping buffer plate 27 are both made of damping material, which can absorb vibration and impact, thereby improving the impact resistance of the door 2; the radiation shielding plate 26 is made of radiation shielding material, which gives the door 2 good radiation shielding ability; the pressure plate 28 is made of steel material, which can block objects with strong penetrating ability such as shrapnel and bullets, thereby giving the door 2 good penetration resistance.

[0064] Reference Figure 6 and Figure 7 The limiting frame 29 is detachably connected to the door mounting frame 21 by screws. The locking frame 22 cooperates with the limiting frame 29 to sequentially fix the fireproof and heat-resistant board 23, reinforced concrete board 24, first damping buffer plate 25, radiation shielding plate 26, second damping buffer plate 27, and pressure plate 28 inside the door mounting frame 21. A locking notch 291 for locking the third insert layer 123 is provided on the side of the limiting frame 29 away from the pressure plate 28. In this embodiment, two locking notches 291 are provided, symmetrically arranged on both sides of the limiting frame 29. The locking notches 291 facilitate the removal of the combination screw 126, making it easy to remove the third insert layer 123.

[0065] Multiple triangular truncated pyramids 3 are provided inside the door mounting frame 21. The triangular truncated pyramids 3 are made of damping material. The upper bottom surface of the triangular truncated pyramid 3 abuts against the inner side of the locking frame 22, and the lower bottom surface of the triangular truncated pyramid 3 abuts against the inner side of the limiting frame 29. The triangular truncated pyramid 3 is detachably connected to the limiting frame 29 by bolts. The cross-sectional area of ​​the triangular truncated pyramid 3 gradually increases from the direction away from the locking frame 22 to the direction near the limiting frame 29.

[0066] The two sides of the triangular frustum 3 that abut against the door mounting frame 21 are called abutting surfaces, and the other side of the triangular frustum 3 is called snap-fit ​​surface 31. Multiple chamfered surfaces 4 for abutting snap-fit ​​surface 31 are provided on the corners of the fireproof and heat-resistant board 23, reinforced concrete board 24, first damping buffer board 25, radiation shielding board 26, second damping buffer board 27 and bearing plate 28.

[0067] The triangular truncated pyramid 3 made of damping material can play a buffering role. Together with the first damping buffer plate 25 and the second damping buffer plate 27, it makes the door body 2 have better impact resistance. When both the locking frame 22 and the limiting frame 29 are present, the contact surface of the triangular truncated pyramid 3 abuts against the inner frame wall of the door mounting frame 21. The contact surface 31 and the chamfered bevel 4 cooperate to ensure that the fireproof and heat-resistant plate 23, the reinforced concrete plate 24, the first damping buffer plate 25, the radiation shielding plate 26, the second damping buffer plate 27 and the pressure plate 28 are stably set in the door mounting frame 21.

[0068] The implementation principle of the impact-resistant air-raid shelter door structure in this application embodiment is as follows: when the air-raid shelter door is impacted and the hinge part is damaged, and the door mounting frame 21 and the frame body 11 are deformed and stuck together, the insert plate layer can be easily removed after the assembly screw 126 is disassembled. From inside the protected area, after removing the first insert plate layer 121, the limiting frame 29 can be easily removed. After removing the limiting frame 29, the triangular truncated pyramid 3 can be easily removed, making it easy to disassemble the pressure plate 28, the second damping buffer plate 27, the second insert plate layer 122, the radiation shielding plate 26, the first damping buffer plate 25, the first insert plate layer 121, the reinforced concrete plate 24, and the fireproof and heat-resistant plate 23 sequentially from the inside. From outside the protected area, after cutting the clamping frame 22, with the cooperation of the clamping surface 31 and the chamfered surface 4, it is easy to disassemble the fireproof and heat-resistant plate 23, the reinforced concrete plate 24, the first damping buffer plate 25, the first insert plate layer 121, the radiation shielding plate 26, the second damping buffer plate 27, the second insert plate layer 122, the pressure plate 28, the limiting frame 29, and the third insert plate layer 123 sequentially from the outside, thus facilitating the reopening of the air-raid shelter door.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An impact-resistant air defense door structure, comprising a door frame (1) and a door body (2), characterized in that: The door body (2) includes a door mounting frame (21) hinged to the door frame (1). A locking frame (22) is provided on the inner frame wall of the door mounting frame (21). Along the direction away from the locking frame (22), a fireproof and heat-resistant plate (23), a reinforced concrete plate (24), a first damping buffer plate (25), a radiation shielding plate (26), a second damping buffer plate (27), and a pressure plate (28) are sequentially locked in the door mounting frame (21). A limiting frame (29) for locking the pressure plate (28) is detachably connected to one end of the door mounting frame (21) away from the locking frame (22). The door frame (1) includes a frame body (11), a movable insert plate assembly (12), and an opening and closing assembly (13) disposed on the frame body (11) for driving the movable insert plate assembly (12). The movable insert plate assembly (12) includes a first insert plate layer (121), a second insert plate layer (122), and a third insert plate layer (123) detachably connected to the opening and closing assembly (13). The first insert plate layer (121), the second insert plate layer (122), and the third insert plate layer (123) can be sequentially inserted into the first damping buffer. On the side of the plate (25), the second damping buffer plate (27) and the limiting frame (29); a triangular truncated pyramid (3) is provided on the corner of the door mounting frame (21). The triangular truncated pyramid (3) is made of damping material. The upper bottom surface of the triangular truncated pyramid (3) abuts against the inner side of the locking frame (22). The triangular truncated pyramid (3) is detachably connected to the limiting frame (29). The cross-sectional area of ​​the triangular truncated pyramid (3) gradually increases from the direction away from the locking frame (22) to the direction closer to the limiting frame (29). The two sides of the triangular frustum (3) that abut against the door mounting frame (21) are called abutment surfaces, and the other side of the triangular frustum (3) is called snap-fit ​​surface (31). Chamfered bevels (4) for abutting against the snap-fit ​​surface (31) are provided on the corners of the fireproof and heat-resistant board (23), the reinforced concrete slab (24), the first damping buffer plate (25), the radiation shielding plate (26), the second damping buffer plate (27), and the pressure plate (28). Multiple insertion through holes (112) are opened on the inner frame wall of the frame body (11), and openings are made on the side of the first damping buffer plate (25). The first slot (251) is provided for insertion of the first insert plate layer (121), and a second slot (271) is provided on the side of the second damping buffer plate (27) for insertion of the second insert plate layer (122). Multiple clearance through holes (211) are provided on the side wall of the door mounting frame (21), the clearance through holes (211) connecting the first slot (251) or the second slot (271). A locking notch (291) is provided on the limiting frame (29) for locking the third insert plate layer (123). The opening and closing assembly (13) includes a mounting plate disposed within the frame body (11). 131), the first insert plate layer (121), the second insert plate layer (122), and the third insert plate layer (123) are detachably connected to the mounting plate (131); a positioning strip (132) is provided on the surface of the mounting plate (131), and a locking block (133) is provided at both ends of the positioning strip (132), the locking block (133) being located on the side of the positioning strip (132) away from the mounting plate (131); the first insert plate layer (121), the second insert plate layer (122), and the third insert plate layer (123) have the same structure, including two end plates (124), and are provided with A middle plate (125) is located between the two end plates (124), and a combined screw (126) is inserted into the two end plates (124) and the middle plate (125). An end slot (1241) adapted to the positioning strip (132) is provided on the end plate (124) away from the combined screw (126). A slot (1242) adapted to the locking block (133) is provided on the side wall of the end slot (1241) near the bottom of the slot. An insertion groove (1251) adapted to the positioning strip (132) is provided on the middle plate (125) away from the combined screw (126).

2. The impact-resistant air defense door structure according to claim 1, characterized in that: A clearance notch (1243) is provided on the side of the end plate (124) away from the middle plate (125), and the nut of the combined screw (126) is disposed in the clearance notch (1243).

3. The impact-resistant air-raid shelter door structure according to claim 2, characterized in that: A sealing notch (212) is provided on the outer wall of the door mounting frame (21), a sealing rubber layer (5) is provided on the sealing notch (212), and a sealing protrusion (51) is provided on the sealing rubber layer (5).

4. The impact-resistant air-raid shelter door structure according to claim 3, characterized in that: The opening and closing assembly (13) further includes a movable rack (134) vertically disposed on the mounting plate (131) away from the positioning strip (132), a driven gear (135) meshing with the movable rack (134), a transmission shaft (136) vertically disposed on the driven gear (135), and a wheel handle (137) fixed to one end of the transmission shaft (136) away from the driven gear (135). The wheel handle (137) is disposed outside the frame body (11).

5. The impact-resistant air-raid shelter door structure according to claim 4, characterized in that: A protective sleeve (6) is vertically provided on the outer wall of the frame body (11), and the protective sleeve (6) is sleeved on the transmission shaft (136).

6. The impact-resistant air-raid shelter door structure according to claim 5, characterized in that: An extension (111) for increasing the contact area is provided on the outer frame wall of the frame body (11).

Images