Improved anti-impact civil air defense door

Abstract

The utility model relates to an improved impact-resistant civil air defense door, which belongs to the field of civil air defense doors and comprises a door body, an impact-resistant mechanism is arranged on the front surface of the door body, and a shunting mechanism is arranged in the middle of the door body. According to the improved anti-impact civil air defense door, the anti-impact mechanism is arranged, energy transmitted to the door body is reduced through preliminary impact absorption of the wrapping layer, the supporting part prone to being broken is designed to be capable of being broken when being impacted, energy can be controllably released through the design, and therefore the door body main body is protected against damage, and compared with traditional materials, the improved anti-impact civil air defense door has the advantages that the structure is simple, and cost is low. Long-term damage caused by impact is reduced through the design of the easy-to-fold supporting part and the wrapping layer, the durability of the door body is improved, due to the fact that the easy-to-fold supporting part and the wrapping layer can be replaced after impact, the maintenance cost and complexity are reduced through the modular design, light weight is achieved through the porous structure design of the fixing block, and the service life of the door body is prolonged. And meanwhile, the lightening holes are formed, so that the weight is reduced on the premise that the structural strength is not sacrificed, and the reliability of the whole structure is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of civil defense doors, and specifically to an improved impact-resistant civil defense door. Background Art

[0002] Civil defense doors, whose full name is civil air defense engineering protection equipment, are a type of protection equipment used in civil defense engineering, including protective doors, protective closed doors, closed doors and explosion-proof valves. They are usually composed of door frames and door leaves. Their main function is to prevent shock waves, toxic agents and other harmful substances from passing through in wartime or emergency situations, and to protect the safety of personnel and equipment.

[0003] As disclosed in Chinese Patent Publication No. (CN219953143U), a new type of protective and impact-resistant civil air defense door comprises a civil air defense door frame, the inner side of the civil air defense door frame is movably connected to a civil air defense door body, the left side of the civil air defense door body is movably connected to a protective box, the inner side of the protective box is fixedly connected to a fixed air bag, the left side of the fixed air bag is fixedly connected to a connecting plate, the left side of the connecting plate is fixedly connected to a fixed block, the outer side of the fixed block is movably connected to an adjustment plate, the outer side of the adjustment plate is movably connected to a connecting block, the left side of the connecting block is fixedly connected to a buffer plate, the left side of the buffer plate is fixedly connected to a buffer spring, and the left side of the buffer spring is fixedly connected to a pressure-resistant plate. This new type of protective and impact-resistant civil air defense door has a simple overall structure, achieves the purpose of protecting and impact-resistant civil air defense doors, avoids damage to civil air defense doors due to external force during installation and use, improves the service life of civil air defense doors, and ensures the sealing and shielding effects of civil air defense doors.

[0004] However, the existing technology, such as the above-mentioned patent, still has the problem of poor impact resistance for civil defense doors. The specific solutions of the existing technology mainly use flexible materials and elastic structures as buffers to absorb external impact forces and reduce damage to the door body itself. Although these design solutions can reduce the impact of impact to a certain extent, they will lead to reduced durability and high maintenance costs in long-term use, and may affect the reliability of the overall structure. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the present application provides an improved impact-resistant civil defense door, which has the advantages of good impact resistance and solves the problem of poor impact resistance of civil defense doors.

[0006] To achieve the above objectives, the present application provides the following technical solutions: an improved impact-resistant civil air defense door, comprising a door body, an impact-resistant mechanism provided on the front of the door body, and a diversion mechanism provided in the middle of the door body;

[0007] The anti-impact mechanism includes a fixed block, an outer frame, a wrapping layer and an easily broken support part. The fixed block is fixed to the back of the door body by bolts, the outer frame is sleeved on the outside of the fixed block, the wrapping layer is fixed to the outside of the outer frame, and the easily broken support part is fixed between the left and right inner walls of the outer frame.

[0008] By adopting this technical solution, when the civil air defense door is impacted, it can absorb and disperse the impact force through the anti-impact mechanism, and at the same time guide and disperse the airflow through the diversion mechanism, thereby improving the impact resistance of the door body.

[0009] Furthermore, the wrapping layer is a high-density foam layer, and the width of the wrapping layer is equal to the width of the outer frame.

[0010] This technical solution ensures that the entire outer frame is covered with a high-density foam layer, providing uniform impact absorption.

[0011] Furthermore, the easily breakable support portion includes a plurality of strip supports with folded corners.

[0012] By adopting this technical solution, the layering and complexity of the structure are increased, so that the impact force can be absorbed and dispersed in multiple directions.

[0013] Furthermore, the number of the fixing blocks is not less than two and is evenly distributed on the front of the door body.

[0014] The adoption of this technical solution helps provide more uniform support and enhances the stability and impact resistance of the overall structure.

[0015] Furthermore, a plurality of weight-reducing holes are provided on the outer side of the fixing block, and screw holes for connecting with the door body bolts are provided at the four corners of the back side of the fixing block.

[0016] By adopting this technical solution, the fixed block can be firmly connected to the door body. This design achieves lightweight without sacrificing structural strength.

[0017] Furthermore, the diversion mechanism includes a mounting frame, a rotating shaft and a centrifugal impeller. The mounting frame is fixed to the middle of the front of the door body, the rotating shaft is rotatably connected to the back wall of the inner cavity of the mounting frame through a bearing, and the centrifugal impeller is located inside the mounting frame and fixed to the outside of the rotating shaft.

[0018] By adopting this technical solution, the centrifugal impeller can rotate and guide the airflow under the impact of the airflow, thereby reducing the direct impact on the door body.

[0019] Furthermore, an air inlet is provided on the front side of the installation frame.

[0020] By adopting this technical solution, the premise of airflow guidance and dispersion is achieved, which helps to improve the diversion efficiency.

[0021] Furthermore, a plurality of diversion grooves are provided between the installation frame and the side opposite to the door body, and the length of the diversion groove is equal to the width of the door body.

[0022] By adopting this technical solution, the airflow can be evenly dispersed in the width direction of the door body, reducing local concentrated force, thereby improving the overall impact resistance of the door body.

[0023] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0024] 1. The improved impact-resistant civil air defense door is equipped with an impact-resistant mechanism. The initial impact absorption by the wrapping layer reduces the energy transferred to the door body. The easily broken support part is designed to break when impacted. This design can release energy in a controlled manner, thereby protecting the main body of the door from damage. Compared with traditional materials, the design of the easily broken support part and the wrapping layer reduces the long-term damage caused by impact and improves the durability of the door body. Since the easily broken support part and the wrapping layer can be replaced after the impact, this modular design reduces maintenance costs and complexity. The porous structure design of the fixed block achieves lightweight. At the same time, the setting of the weight-reducing holes helps to reduce weight without sacrificing structural strength, thereby enhancing the reliability of the overall structure.

[0025] 2. The improved impact-resistant civil defense door is equipped with a diversion mechanism. The centrifugal impeller rotates under the impact of the airflow, effectively guiding the airflow and reducing the direct impact on the door body. The shock wave is dispersed by the rotation of the centrifugal impeller, reducing the local pressure on the door body. The diversion mechanism provides additional protection time for the door body because the airflow needs to bypass the centrifugal impeller, which delays the time for the shock wave to reach the door body. The design of the diversion groove makes the shock wave distributed along the width of the door body, reducing the concentrated stress points, thereby reducing the overall stress. The coordinated use of the air inlet and the diversion groove improves the protection efficiency and reduces the direct impact on the door body by reasonably distributing the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 This is a schematic diagram of the impact resistance mechanism of this application;

[0028] Figure 3 This is a partial cross-sectional view of the impact-resistant mechanism of this application;

[0029] Figure 4 This is a diagram of the diversion organization for this application;

[0030] Figure 5 This is a side view of the diversion mechanism of this application.

[0031] In the figure: 1. Door body; 2. Anti-impact mechanism; 21. Fixed block; 22. Outer frame; 23. Wrapping layer; 24. Easily breakable support portion; 25. Weight reduction hole; 3. Diverter mechanism; 31. Mounting frame; 32. Rotating shaft; 33. Centrifugal impeller; 34. Air inlet; 35. Diverter slot. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] See also Figure 1 An improved impact-resistant civil defense door in this embodiment includes a door body 1, an impact-resistant mechanism 2 is provided on the front of the door body 1, and a diversion mechanism 3 is provided in the middle of the door body 1.

[0034] See also Figures 2 to 3 In order to improve the impact resistance of the civil defense door, the anti-impact mechanism 2 in this embodiment includes a fixed block 21, an outer frame 22, a wrapping layer 23 and an easily broken support part 24. The fixed block 21 is fixed to the back of the door body 1 by bolts. The fixed block 21 serves as the basic part of the anti-impact mechanism 2. The fixed block 21 is fixed to the back of the door body 1 by bolts and can also be assembled and used in a modular manner. The outer frame 22 is mounted on the outside of the fixed block 21. The outer frame 22 is mounted on the outside of the fixed block 21 to form a frame structure, which together with the fixed block 21 constitutes the external form of the anti-impact mechanism 2. The wrapping layer 23 is fixed to the outside of the outer frame 22, and the easily broken support part 24 is fixed between the left and right inner walls of the outer frame 22.

[0035] In this embodiment, the wrapping layer 23 is a high-density foam layer, and the width of the wrapping layer 23 is equal to the width of the outer frame 22. The wrapping layer 23 is fixed to the outside of the outer frame 22 and uses a high-density foam layer material to play a role in preliminarily absorbing impact energy. Its width is equal to the width of the outer frame 22 to ensure that the entire outer frame 22 is covered by the wrapping layer 23. The easily broken support part 24 includes several strip supports with folded angles. The easily broken support part 24 is fixed between the inner walls on the left and right sides of the outer frame 22 and is composed of several strip supports with folded angles. These supports are designed to be able to break when impacted, further absorbing and dispersing the impact force. The number of fixed blocks 21 is not less than two, and they are evenly distributed on the front of the door body 1. Several weight-reducing holes 25 are opened on the outside of the fixed block 21, and screw holes for connecting to the door body 1 are opened at the four corners of the back of the fixed block 21. The weight-reducing holes 25 opened on the outside of the fixed block 21 help to reduce the weight of the door body 1 without affecting its structural strength.

[0036] See also Figures 4 and 5 In order to reduce the impact of airflow on the civil defense door, the diversion mechanism 3 in this embodiment includes a mounting frame 31, a rotating shaft 32 and a centrifugal impeller 33. The mounting frame 31 is fixed to the middle of the front of the door body 1, and the rotating shaft 32 is rotatably connected to the back wall of the inner cavity of the mounting frame 31 through a bearing. The mounting frame 31 is fixed to the middle of the front of the door body 1, providing an installation basis for the diversion mechanism 3, and the rotating shaft 32 is rotatably connected to the back wall of the inner cavity of the mounting frame 31 through a bearing, allowing the centrifugal impeller 33 to rotate freely. The centrifugal impeller 33 is located inside the mounting frame 31 and is fixed to the outside of the rotating shaft 32. When the centrifugal impeller 33 is impacted by the positive airflow, the centrifugal impeller 33 rotates, thereby guiding and dispersing the airflow.

[0037] In this embodiment, an air inlet 34 is provided on the front of the installation frame 31, and a number of diverter grooves 35 are provided between the installation frame 31 and the side opposite to the door body 1, and the length of the diverter groove 35 is equal to the width of the door body 1. The air inlet 34 allows the airflow to enter the diversion mechanism 3, and the diverter groove 35 is used to guide the airflow to disperse along the width direction of the door body 1 to reduce the direct impact on the door body 1.

[0038] The working principle of the above embodiment is:

[0039] (1) The fixed block 21 is the basic part of the anti-impact mechanism 2. The fixed block 21 is fixed to the back of the door body 1 by bolts, providing a stable support point for the entire anti-impact mechanism 2. It can also be assembled in a modular manner. The outer frame 22 is mounted on the outside of the fixed block 21 to form a frame structure, which together with the fixed block 21 constitutes the external form of the anti-impact mechanism 2. The wrapping layer 23 is fixed on the outside of the outer frame 22 and is made of a high-density foam layer material to play a role in initially absorbing impact energy. Its width is equal to that of the outer frame 22 to ensure that the entire outer frame 22 is covered by the wrapping layer 23. The easily broken support part 24 is fixed between the inner walls on the left and right sides of the outer frame 22 and consists of several strip supports with folded corners. These supports are designed to break when impacted, further absorbing and dispersing the impact force. The weight-reducing holes 25 opened on the outside of the fixed block 21 help to reduce the weight of the door body 1 without affecting its structural strength.

[0040] (2) The mounting frame 31 is fixed to the middle of the front of the door body 1, providing a mounting base for the diversion mechanism 3. The rotating shaft 32 is rotatably connected to the back wall of the inner cavity of the mounting frame 31 through a bearing, allowing the centrifugal impeller 33 to rotate freely. When the centrifugal impeller 33 is impacted by the positive airflow, the centrifugal impeller 33 rotates to guide and disperse the airflow. The air inlet 34 allows the airflow to enter the diversion mechanism 3. The diversion groove 35 is used to guide the airflow to disperse along the width direction of the door body 1, thereby reducing the direct impact on the door body 1.

Claims

1. An improved impact-resistant civil air defense door, comprising a door body (1), characterized in that: The front of the door body (1) is provided with an anti-impact mechanism (2), and the middle of the door body (1) is provided with a diversion mechanism (3); The anti-impact mechanism (2) comprises a fixed block (21), an outer frame (22), a wrapping layer (23) and an easily broken support portion (24); the fixed block (21) is fixed to the back of the door body (1) by bolts; the outer frame (22) is sleeved on the outer side of the fixed block (21); the wrapping layer (23) is fixed to the outer side of the outer frame (22); and the easily broken support portion (24) is fixed between the left and right inner walls of the outer frame (22).

2. The improved impact-resistant civil defense door according to claim 1, characterized in that: The wrapping layer (23) is a high-density foam layer, and the width of the wrapping layer (23) is equal to the width of the outer frame (22).

3. The improved impact-resistant civil defense door according to claim 1, characterized in that: The easily breakable support portion (24) comprises a plurality of strip supports with folded corners.

4. The improved impact-resistant civil defense door according to claim 1, characterized in that: The number of the fixing blocks (21) is no less than two and they are evenly distributed on the front surface of the door body (1).

5. The improved impact-resistant civil defense door according to claim 1, characterized in that: A plurality of weight-reducing holes (25) are provided on the outer side of the fixing block (21), and screw holes for connecting with the door body (1) are provided at the four corners of the back side of the fixing block (21).

6. The improved impact-resistant civil defense door according to claim 1, characterized in that: The diversion mechanism (3) comprises a mounting frame (31), a rotating shaft (32) and a centrifugal impeller (33); the mounting frame (31) is fixed to the middle of the front face of the door body (1); the rotating shaft (32) is rotatably connected to the back wall of the inner cavity of the mounting frame (31) via a bearing; and the centrifugal impeller (33) is located inside the mounting frame (31) and fixed to the outside of the rotating shaft (32).

7. The improved impact-resistant civil defense door according to claim 6, characterized in that: An air inlet (34) is provided on the front of the installation frame (31).

8. The improved impact-resistant civil defense door according to claim 6, characterized in that: A plurality of diversion grooves (35) are provided between the mounting frame (31) and the side opposite to the door body (1), and the length of the diversion grooves (35) is equal to the width of the door body (1).

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