A shock-resistant double-layer air defense door

Abstract

This application relates to an impact-resistant double-layer air-raid shelter door, belonging to the technical field of double-layer air-raid shelter doors. The main body of the double-layer air-raid shelter door includes an outer door panel, a front door panel, a rear door panel, and two slots. The rear door panel is fixed inside the right slot, and the rear end of the front door panel is connected to the left slot. The front wall of the cavity of the left slot is provided with an anti-pressure component. The anti-pressure component includes multiple sets of connecting blocks, multiple sets of compression blocks, multiple sets of buffer springs, a connecting rod fixedly installed on the opposite side of the upper and lower connecting blocks, and a pressing rod fixedly installed and hinged to the front end of the two compression blocks in the same set. This impact-resistant double-layer air-raid shelter door, by providing an anti-pressure component, can mitigate the impact force received by the double-layer air-raid shelter door, reducing the probability of deformation or even damage due to impact force, thereby increasing the service life of the double-layer air-raid shelter door. It can buffer the impact force in stages to further improve the buffering performance and facilitate the maintenance and repair of the anti-pressure component.

Description

Technical Field

[0001] This application relates to the field of double-layer air defense door technology, specifically an impact-resistant double-layer air defense door. Background Technology

[0002] Civil defense doors, also known as air defense doors, are important protective equipment in civil air defense projects. They are mainly used to protect personnel and materials during wartime or emergency situations and to prevent harmful external substances such as nuclear radiation, biological and chemical pollution, and shock waves from affecting the internal environment.

[0003] Air defense doors are usually divided into single-layer and double-layer types, but the air defense doors currently on the market still have weak impact resistance. Since most air defense doors on the market are made of a thick steel plate, the interior of the air defense door usually does not have a corresponding impact-resistant structure. When the air defense door is hit, it is easy to deform or even be damaged, resulting in a relatively short service life. Therefore, an impact-resistant double-layer air defense door is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an impact-resistant double-layered air-raid shelter door, which has advantages such as good impact resistance and solves the problem of weak impact resistance.

[0005] To achieve the above objectives, this application provides the following technical solution: an impact-resistant double-layer air-raid shelter door, comprising a double-layer air-raid shelter door body, wherein the double-layer air-raid shelter door body includes an outer door panel, a front door panel, a rear door panel and two slots, the rear door panel is fixed inside the right slot, the rear end of the front door panel is connected to the inside of the left slot, and the front wall of the inner cavity of the left slot is provided with an anti-pressure component;

[0006] The anti-compression component includes multiple sets of connecting blocks, multiple sets of extrusion blocks, multiple sets of buffer springs, connecting rods fixedly installed on opposite sides of the upper and lower connecting blocks, pressing rods fixedly installed and hinged to the front ends of the two extrusion blocks in the same set, buffer plates fixedly installed and hinged to the ends of the two pressing rods in the same set away from the extrusion blocks, and snap-fit ​​structures fixedly installed at the upper and lower ends of the front door panel.

[0007] By adopting the above technical solution, the impact force on the double-layer air defense door can be mitigated, reducing the probability of the double-layer air defense door being deformed or even damaged due to the impact force, thereby increasing the service life of the double-layer air defense door, and the impact force can be buffered in stages to further improve the buffering performance.

[0008] Furthermore, the left ends of the multiple buffer plates abut against the right end of the front door panel, the two buffer springs in the same group are both sleeved on the outer surface of the connecting rod, and the multiple groups of connecting blocks are all fixed to the right wall of the inner cavity of the left side slot.

[0009] By adopting the above technical solution, the front door panel abuts against multiple buffer plates, thereby buffering and reducing the impact force it receives.

[0010] Furthermore, each of the two extrusion blocks in the same group has a circular hole on its opposite side for the connecting rod to pass through, and the connecting rod is slidably connected to the inside of the circular hole.

[0011] Using the above technical solution, the two compression blocks can slide on the outer surface of the connecting rod so that the compression blocks can compress the buffer spring sleeved on the outer surface of the connecting rod, and the blocking of the two connecting blocks in the same group can effectively prevent the buffer spring and the compression blocks from falling off the outer surface of the connecting rod.

[0012] Furthermore, the snap-fit ​​structure includes two sets of snap-fit ​​blocks, two sets of sleeve rods, a connecting plate fixedly installed at the opposite end of the upper and lower sets of snap-fit ​​blocks, a shifting block fixedly installed on the left side of the connecting plate, and a stop block fixedly installed at the opposite end of the upper and lower sets of sleeve rods. The outer surfaces of the two sets of sleeve rods are all fitted with resistance springs.

[0013] By adopting the above technical solution, the front door panel can be removed from the slot on the left side of the outer door panel to facilitate the maintenance and repair of the anti-pressure components, thereby ensuring the normal use of the anti-pressure components.

[0014] Furthermore, the upper and lower walls of the inner cavity of the slot on the left end are fixedly connected with two sliding grooves opened at the upper and lower ends of the inner cavity of the outer door panel, and the snap-fit ​​block is located inside the sliding groove and is slidably connected to it.

[0015] By adopting the above technical solution, the front door panel can be stably slid in the left slot through the upper and lower sets of locking blocks, so as to reduce the front door panel moving out of the left slot when it is reset due to the elastic force of multiple sets of buffer springs.

[0016] Furthermore, grooves are provided at both the upper and lower ends of the front door panel, and the snap-fit ​​block and the connecting plate are slidably connected inside the grooves.

[0017] Using the above technical solution, when the two sets of snap-fit ​​blocks are moved into the two grooves, the front door panel can be removed from the left side slot, which facilitates the maintenance and repair of the anti-pressure components.

[0018] Furthermore, two sliding holes are provided on the left side of the front door panel, and the sliding block is slidably connected to the inside of the sliding holes, and the sliding holes are connected to the grooves.

[0019] The above technical solution is adopted so that the moving block can be connected to the connecting plate, so that the user can move the moving block and the moving block can move the connecting plate in the groove of the front door panel.

[0020] Furthermore, the opposite ends of the upper and lower sets of sleeve rods are respectively fixed to the opposite walls of the two groove cavities. The opposite sides of the upper and lower connecting plates are provided with two through holes for the sleeve rods to pass through their interiors. The sleeve rods are slidably connected to the inside of the through holes.

[0021] By adopting the above technical solution, the connecting plate slides on the outer surface of the two T-shaped rods composed of two sleeve rods and two stops.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This impact-resistant double-layer air-raid shelter door, by being equipped with an anti-pressure component, can mitigate the impact force received by the double-layer air-raid shelter door, reduce the probability of deformation or even damage caused by impact force, thereby increasing the service life of the double-layer air-raid shelter door, and can buffer the impact force in stages to further improve the buffering performance, and facilitate the maintenance and repair of the anti-pressure component. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 This is a structural schematic diagram of the anti-compression component and the front door panel of this application;

[0026] Figure 3 This is a left-side perspective view of the front door panel and the latching block in this application.

[0027] Figure 4 This is a schematic diagram of the left side view of the card connector and connecting plate in this application.

[0028] In the diagram: 11. Outer door panel; 12. Front door panel; 13. Rear door panel; 14. Groove; 2. Anti-compression component; 21. Connecting block; 22. Connecting rod; 23. Extrusion block; 24. Pressing rod; 25. Buffer plate; 26. Buffer spring; 27. Snap-fit ​​block; 28. Connecting plate; 29. ​​Moving block; 210. Sleeve rod; 211. Stop block; 212. Resistance spring. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Please see Figure 1The impact-resistant double-layer air defense door in this embodiment includes a double-layer air defense door body. The double-layer air defense door body includes an outer door panel 11, a front door panel 12, a rear door panel 13, and two slots 14. The rear door panel 13 is fixed inside the right slot 14, and the rear end of the front door panel 12 is connected to the inside of the left slot 14. The front wall of the inner cavity of the left slot 14 is provided with an anti-pressure component 2.

[0031] Additionally, the front door panel 12 slides within the left slot 14 of the outer door panel 11. When the double-layered air-raid shelter door body is subjected to impact, the front door panel 12 moves within the left slot 14, allowing the front door panel 12 to press against the pressure-resistant component 2. This helps the pressure-resistant component 2 to alleviate the impact force on the double-layered air-raid shelter door body, reducing the probability of the double-layered air-raid shelter door body being deformed or even damaged due to impact.

[0032] Please see Figures 1 to 4 In this embodiment, the anti-compression component 2 includes multiple sets of connecting blocks 21, multiple sets of squeezing blocks 23, multiple sets of buffer springs 26, connecting rods 22 fixedly installed on opposite sides of the upper and lower connecting blocks 21, pressing rods 24 fixedly installed and hinged to the front ends of the two squeezing blocks 23 in the same group, buffer plates 25 fixedly installed and hinged to the ends of the two pressing rods 24 in the same group away from the squeezing blocks 23, and snap-fit ​​structures fixedly installed at the upper and lower ends of the front door panel 12.

[0033] Among them, the left ends of multiple buffer plates 25 abut against the right end of the front door panel 12. When the front door panel 12 gradually moves into the left slot 14, it can abut against multiple buffer plates 25, thereby buffering and reducing the impact force it receives. Two buffer springs 26 in the same group are sleeved on the outer surface of the connecting rod 22, and multiple connecting blocks 21 are fixed to the right wall of the inner cavity of the left slot 14.

[0034] Meanwhile, each of the two compression blocks 23 in the same group has a circular hole on its opposite side for the connecting rod 22 to pass through. The connecting rod 22 is slidably connected to the inside of the circular hole, so that the two compression blocks 23 in the same group can slide on the outer surface of the connecting rod 22. This allows the compression blocks 23 to compress the buffer spring 26 sleeved on the outer surface of the connecting rod 22. Furthermore, the blocking effect of the two connecting blocks 21 in the same group can effectively prevent the buffer spring 26 and the compression blocks 23 from falling off the outer surface of the connecting rod 22.

[0035] In addition, the lengths of the two adjacent sets of pressing rods 24 are different, and the lengths of the two adjacent connecting rods 22 are different, which results in the two adjacent buffer plates 25 not being on the same longitudinal level. This prevents the front door panel 12 from being squeezed by the buffer plates 25 at the same time, so that the impact force can be buffered in stages, thereby further improving the buffering performance.

[0036] Please see Figure 1 , Figure 3 and Figure 4The snap-fit ​​structure in this embodiment includes two sets of snap-fit ​​blocks 27, two sets of sleeve rods 210, a connecting plate 28 fixedly installed at the opposite end of the upper and lower sets of snap-fit ​​blocks 27, a shifting block 29 fixedly installed on the left side of the connecting plate 28, and a stop block 211 fixedly installed at the opposite end of the upper and lower sets of sleeve rods 210. The outer surfaces of the two sets of sleeve rods 210 are all fitted with resistance springs 212.

[0037] Secondly, the upper and lower walls of the inner cavity of the left end slot 14 are fixedly connected with two sliding grooves opened at the upper and lower ends of the inner cavity of the outer door panel 11. The locking block 27 is located inside the sliding groove and is slidably connected to it, so that the front door panel 12 can be steadily slid in the left end slot 14 through the upper and lower sets of locking blocks 27, so as to reduce the front door panel 12 from moving out of the left end slot 14 when it is reset due to the elastic force of multiple sets of buffer springs 26.

[0038] In addition, grooves are provided at both the upper and lower ends of the front door panel 12. The snap-fit ​​block 27 and the connecting plate 28 are slidably connected inside the grooves. When the two sets of snap-fit ​​blocks 27 are moved into the two grooves, the front door panel 12 can be removed from the left side slot 14 to facilitate maintenance and repair of the anti-pressure assembly 2.

[0039] Meanwhile, two sliding holes are provided on the left side of the front door panel 12. The sliding block 29 is slidably connected to the inside of the sliding hole. The sliding hole is connected to the groove so that the sliding block 29 can be connected to the connecting plate 28 so that the user can move the sliding block 29 and move the connecting plate 28 in the groove of the front door panel 12.

[0040] Furthermore, the opposite ends of the upper and lower sets of sleeve rods 210 are respectively fixed to the opposite walls of the inner cavities of the two grooves. The opposite sides of the upper and lower connecting plates 28 are provided with two through holes for the sleeve rods 210 to pass through. The sleeve rods 210 are slidably connected to the inside of the through holes, so that the sleeve rods 210 are fixed in the groove of the front door panel 12. This allows the connecting plates 28 to slide on the outer surface of the two T-shaped rods composed of the two sleeve rods 210 and the two stops 211. This allows the connecting plates 28 to slide in the groove and not easily fall out of the groove. The connecting plates 28 can slide on the outer surface of the sleeve rods 210 through the through holes, which facilitates the connecting plates 28 to compress the resistance spring 212.

[0041] The working principle of the above embodiments is as follows:

[0042] When the double-layered air-raid shelter door is subjected to impact, the front door panel 12 is pushed to gradually move into the left slot 14, so that the front door panel 12 presses against multiple buffer plates 25, and the buffer plates 25 press against the corresponding two pressing rods 24, so that the two pressing rods 24 can push the corresponding two pressing blocks 23 to move in opposite directions on the outer surface of the connecting rod 22, so that the two pressing blocks 23 can press against the two buffer springs 26 sleeved on the outer surface of the connecting rod 22, thereby alleviating the impact force on the body of the double-layered air-raid shelter door and reducing the probability that the body of the double-layered air-raid shelter door will be deformed or even damaged due to impact.

[0043] Furthermore, the front door panel 12 presses against the buffer plate 25 connected to the long pressing rod 24 and the connecting rod 22, and then presses against the buffer plate 25 connected to the short pressing rod 24 and the connecting rod 22, so as to buffer the impact force in stages and further improve the buffering performance.

[0044] Furthermore, when the anti-pressure assembly 2 needs maintenance, press the two moving blocks 29 to move them relative to each other, so that the two moving blocks 29 can drive the two connecting plates 28 to move relative to each other in the groove of the front door panel 12. When the two connecting plates 28 move on the outer surface of the two sets of sleeve rods 210, they can squeeze the resistance springs 212 sleeved on the outer surface of the sleeve rods 210. This allows the two connecting plates 28 to drive the upper and lower sets of locking blocks 27 to move in opposite directions, so that the two sets of locking blocks 27 can be moved out from the two sets of sliding grooves in the left slot hole 14 and into the two grooves in the front door panel 12. This allows the front door panel 12 to be removed from the left slot hole 14 for maintenance of the anti-pressure assembly 2, ensuring the normal use of the anti-pressure assembly 2.

[0045] Repeat the above steps, and the front door panel 12 can be moved into the left slot 14, and the two moving blocks 29 are released, so that the two sets of resistance springs 212 are no longer squeezed by pressure, so that the two sets of resistance springs 212 can push the two connecting plates 28 to move in opposite directions, so that the two connecting plates 28 can drive the two sets of snap-fit ​​blocks 27 to move out of the groove of the front door panel 12 and into the two sets of sliding grooves in the left slot 14, thereby completing the installation of the front door panel 12.

Claims

1. An impact-resistant double-layer air-raid shelter door, comprising a double-layer air-raid shelter door body, characterized in that: The double-layer air defense door body includes an outer door panel (11), a front door panel (12), a rear door panel (13) and two slots (14). The rear door panel (13) is fixed inside the right slot (14). The rear end of the front door panel (12) is connected to the inside of the left slot (14). The front wall of the inner cavity of the left slot (14) is provided with a pressure-resistant component (2). The anti-compression component (2) includes multiple sets of connecting blocks (21), multiple sets of extrusion blocks (23), multiple sets of buffer springs (26), connecting rods (22) fixedly installed on opposite sides of the upper and lower connecting blocks (21), pressing rods (24) fixedly installed at the front ends of the two extrusion blocks (23) in the same set, buffer plates (25) fixedly installed at the ends of the two pressing rods (24) in the same set away from the extrusion blocks (23) and snap-fit ​​structures fixedly installed at the upper and lower ends of the front door panel (12).

2. The impact-resistant double-layer air-raid shelter door according to claim 1, characterized in that: The left ends of the multiple buffer plates (25) abut against the right end of the front door panel (12), the two buffer springs (26) in the same group are sleeved on the outer surface of the connecting rod (22), and the multiple connecting blocks (21) are fixed to the right wall of the inner cavity of the left slot (14).

3. The impact-resistant double-layer air-raid shelter door according to claim 1, characterized in that: Both of the two extrusion blocks (23) in the same group have a circular hole on their opposite side for the connecting rod (22) to pass through. The connecting rod (22) is slidably connected to the inside of the circular hole.

4. The impact-resistant double-layer air-raid shelter door according to claim 1, characterized in that: The snap-fit ​​structure includes two sets of snap-fit ​​blocks (27), two sets of sleeve rods (210), a connecting plate (28) fixedly installed at the opposite end of the upper and lower sets of snap-fit ​​blocks (27), a shifting block (29) fixedly installed on the left side of the connecting plate (28), and a stop block (211) fixedly installed at the opposite end of the upper and lower sets of sleeve rods (210). The outer surfaces of the two sets of sleeve rods (210) are fitted with resistance springs (212).

5. The impact-resistant double-layer air-raid shelter door according to claim 4, characterized in that: The upper and lower walls of the inner cavity of the slot (14) on the left end are fixedly connected with two sliding grooves opened at the upper and lower ends of the inner cavity of the outer door panel (11). The snap-fit ​​block (27) is located inside the sliding groove and is slidably connected to it.

6. The impact-resistant double-layer air-raid shelter door according to claim 4, characterized in that: The front door panel (12) has grooves at both the top and bottom ends, and the snap-fit ​​block (27) and the connecting plate (28) are slidably connected inside the grooves.

7. The impact-resistant double-layer air-raid shelter door according to claim 6, characterized in that: Two sliding holes are provided on the left side of the front door panel (12), and the sliding block (29) is slidably connected to the inside of the sliding holes. The sliding holes are connected to the grooves.

8. The impact-resistant double-layer air-raid shelter door according to claim 6, characterized in that: The upper and lower sets of sleeve rods (210) are respectively fixed at opposite ends to opposite walls of the inner cavities of the two grooves. The upper and lower connecting plates (28) are provided with two through holes on opposite sides for the sleeve rods (210) to pass through their interiors. The sleeve rods (210) are slidably connected to the inside of the through holes.

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