Temporary protection device and double-leaf civil air defense door

Abstract

The utility model discloses a temporary protection device and a double-leaf civil air defense door. The temporary protection device comprises a supporting piece, a blocking piece and a connecting piece. The supporting piece is arranged in the length direction of the blocking piece and used for being detachably connected with the first base body and the blocking piece. The blocking piece is used for forming a beam string structure reinforcing structure so as to counteract deformation, caused by loads, of the first base body through reverse deflection; the connecting piece is located at the end of the blocking piece and used for being detachably connected with the second base body and the blocking piece. The double-leaf civil air defense door comprises the temporary protection device. According to the temporary protection device, all components and the connection with the surroundings are achieved in a detachable mode, if necessary, the temporary protection device can be used for the civil air defense door, so that the protection capacity of the civil air defense door is improved, the requirement for the weight of the civil air defense door is lowered while the same protection capacity is achieved, and the purpose of reducing the weight of the civil air defense door is achieved. On the contrary, when unnecessary, the temporary protection device can be detached from the civil air defense door, the use convenience of the civil air defense door is improved, and the practicability is better.

Description

Technical Field

[0001] This utility model relates to the field of civil defense door technology, specifically to a temporary protective device and a double-leaf civil defense door. Background Technology

[0002] In civil defense projects, air-raid shelter doors are often quite thick and heavy to meet protection requirements, withstand the impact and pressure generated by explosions, and provide a high level of protection. For example, the resistance level of a nuclear-grade 5 air-raid shelter door is 0.1 MPa, and that of a nuclear-grade 6 air-raid shelter door is 0.05 MPa. Many nuclear-grade 5 air-raid shelter doors, especially those with larger widths (fixed widths of 5.5 / 7m), have disadvantages such as being heavy, having complex structures, being difficult to install and open, being expensive, and causing numerous problems in actual engineering projects. In particular, to achieve the corresponding protective performance, the weight of these air-raid shelter doors is exceptionally large.

[0003] The latest "General Technical Requirements for Civil Air Defense Protective Equipment (Protective Doors)" specifies the surface density of door leaves. The surface density of door leaves for nuclear level 5 and 6 protective doors and airtight protective doors must be less than ≤350kg / m³. 2 300kg / m 2 This poses a significant challenge to traditional air-raid shelter doors. Reducing weight will decrease the protective performance of the doors, especially the middle opening of double-leaf air-raid shelter doors, which is subject to the greatest stress and is the weakest point. Utility Model Content

[0004] The technical problem to be solved by this utility model is that existing air defense doors are too heavy. The purpose is to provide a temporary protective device and a double-leaf air defense door to solve the above-mentioned problem.

[0005] This utility model is achieved through the following technical solution:

[0006] In the first aspect, this utility model provides a temporary protective device, including a support member, a barrier member, and a connector;

[0007] The support member is arranged along the length of the barrier member and is used for detachable connection between the first base and the barrier member;

[0008] The barrier is used to form a “tensioned beam” reinforced structure to counteract the deformation of the first matrix caused by the load through reverse deflection;

[0009] The connector is located at the end of the barrier and is used for detachable connection between the second base and the barrier.

[0010] In one possible design, the support member includes multiple support rods spaced apart along the length of the barrier member, and the length of the support rods gradually decreases from the middle of the first base to the two sides of the first base, so that the end of the support member facing the barrier member forms a curve that is adapted to the "tensioned beam" reinforcement structure.

[0011] In one possible design, with the center of the first base as the center, multiple support rods are divided into two symmetrical support groups, and the support rods in the same support group are arranged at equal intervals.

[0012] In one possible design, the support rod has two opposing ends, one end for connecting to the first base, and the other end is constructed as a double-ear end with two parallel and spaced-apart ear plates, each ear plate having a shaft hole.

[0013] The double-eared ends of the support rod form an open groove with one end open through two ear plates. Correspondingly, the barrier is inserted into the open groove. A fixing pin located on the outside of the barrier is inserted through the ear plate to close the open end of the open groove.

[0014] In one possible design, the barrier components can be either cables or support frames;

[0015] When the barrier is made of cables, the cables are threaded onto the support rods of the same support member, and both ends of the cables extend to the second base and are detachably connected to the connectors; correspondingly, when there are multiple support members, there are multiple cables and they are set one-to-one with the support members.

[0016] When a support frame is selected as the barrier component, the support frame connects multiple support components to form a hollow truss; correspondingly, multiple support components are provided.

[0017] Accordingly, when there are multiple supports, connecting rods are provided between adjacent supports to connect the multiple supports and form a space truss structure.

[0018] In one possible design, if the width of the first base is large, the cable is divided into at least two sub-segments, and adjacent sub-segments are detachably connected by connectors.

[0019] In one possible design, the end of the cable is provided with an attachment adapted to the connector, the attachment including a base and an extension post, the base for connecting the cable and the extension post, and the extension post having external threads for connection.

[0020] In one possible design, the connector includes a base rod and a sleeve; the base rod is inserted into a second base, one end of the base rod protrudes from the second base and is connected to the sleeve; the inner circumferential surface of the sleeve is provided with an internal thread adapted to the extension post.

[0021] In one possible design, the outer periphery of the sleeve is provided with a first extended plate, and the base is provided with a second extended plate. One of the first extended plate and the second extended plate is provided with a fixing bolt, and the other is provided with a screw hole adapted to the fixing bolt.

[0022] Accordingly, the first extension plate, the second extension plate, the fixing bolts, and the screw holes constitute a fixing module;

[0023] Accordingly, at least two fixing modules are provided between the connector and the attachment.

[0024] Secondly, this utility model provides a double-leaf air-raid shelter door, including a double-leaf door and the aforementioned temporary protective device. The temporary protective device is detachably connected to the double-leaf door via a support member, and a plurality of temporary protective devices are provided and spaced apart along the height direction of the double-leaf door.

[0025] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0026] The temporary protective device allows for the detachable connection of its components and surrounding structures. When necessary, it can be used on air-raid shelter doors to enhance their protective capabilities, achieving the same level of protection while reducing the weight requirements. Conversely, when not needed, the temporary protective device can be removed from the air-raid shelter door, improving its ease of use and practicality. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a top view schematic diagram of a double-leaf air-raid shelter door.

[0029] Figure 2 This is a front view schematic diagram of a double-leaf air-raid shelter door.

[0030] Figure 3 This is a schematic diagram of a single support rod.

[0031] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0032] Figure 5 A front view schematic diagram of a double-leaf air-raid shelter door when selecting a support frame for the barrier components.

[0033] Figure 6 This is a simulated schematic diagram of a double-leaf air-raid shelter door without the aforementioned temporary protective device installed.

[0034] Figure 7 A simulated schematic diagram of a double-leaf air-raid shelter door for installing the aforementioned temporary protective device.

[0035] The attached diagram shows the markings and corresponding component names:

[0036] 10. Double-leaf door; 21. Support component; 211. Support rod; 212. Double-ear end; 213. Open slot; 214. Fixing pin; 22. Barrier component; 221. Cable; 222. Support frame; 23. Connector; 231. Base rod; 232. Sleeve; 30. Additional component; 301. Base; 302. Outer column; 401. First outer plate; 402. Second outer plate; 403. Fixing bolt. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0038] Example 1:

[0039] like Figures 1-5 As shown, a temporary protective device includes a support member 21, a barrier member 22, and a connector 23;

[0040] The support member 21 is arranged along the length of the barrier member 22 and is used to detachably connect the first base and the barrier member 22;

[0041] The barrier element 22 is used to form a "tensioned beam" reinforced structure to counteract the deformation of the first matrix caused by the load through reverse deflection;

[0042] The connector 23 is located at the end of the barrier 22 and is used for detachably connecting the second base and the barrier 22.

[0043] The temporary protective device allows for the detachable connection of its components and surrounding structures. When necessary, it can be used on air-raid shelter doors to enhance their protective capabilities, achieving the same level of protection while reducing the weight requirements. Conversely, when not needed, the temporary protective device can be removed from the air-raid shelter door, improving its ease of use and practicality.

[0044] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, taking a double-leaf air-raid shelter door as an example, the barrier 22 is arranged parallel to the width direction of the air-raid shelter door. Both ends of the barrier 22 extend outside the air-raid shelter door and are connected to the second base through connectors 23. Correspondingly, the second base is constructed as beams, walls, or other structures for installing the air-raid shelter door. The side of the barrier 22 facing the air-raid shelter door is connected to the air-raid shelter door through a support 21.

[0045] Therefore, when an external impact acts on the air-raid shelter door, the door tends to rotate towards the temporary protective device. At this time, the impact force is transmitted to the second base through the support member 21, the barrier member 22, and the connecting member 23, thereby expanding the area bearing the impact load and preventing the air-raid shelter door from bearing the impact load alone, thus improving its protective performance. Furthermore, since the barrier member 22 is constructed as a tensioned beam reinforced structure, it possesses the structural characteristics of a tensioned beam, offering advantages such as good seismic performance, self-balancing to reduce support load, and suitability for large spans. This makes the temporary protective device more compatible with the air-raid shelter door and improves its practicality.

[0046] It is worth noting that multiple temporary protective devices are installed at equal intervals along the height of the air-raid shelter door. Based on this, the cooperation of these multiple temporary protective devices increases the coverage area and further improves the protective performance of the air-raid shelter door. It is readily understood that, for air-raid shelter doors of different sizes, those skilled in the art can appropriately increase or decrease the number of temporary protective devices used.

[0047] Furthermore, it is readily understood that the temporary protective device can be used on air defense doors or on any other suitable component, and this utility model does not impose any limitations on this.

[0048] In one possible implementation, the support member 21 includes a plurality of support rods 211 spaced apart along the length of the barrier member 22, and the length of the support rods 211 gradually decreases from the middle of the first base to the two sides of the first base, so that the end of the support member 21 facing the barrier member 22 forms a curved surface adapted to the "tensioned beam" reinforcement structure.

[0049] Based on the above design, the support member 21 is constructed as multiple support rods 211. The structure of the support rods 211 is relatively simple, easy to obtain, and economical, which helps to mass-produce the temporary protective device. At the same time, considering that the barrier member 22 needs to be constructed as a "tensioned beam" reinforced structure, the length of the support rods 211 is designed according to the different positions of the support rods 211 to form a curve that fits the "tensioned beam" reinforced structure, so that the barrier member 22 can be dislodged through the support member 21.

[0050] Optionally, with the center of the first base as the center, the multiple support rods 211 are divided into two symmetrical support groups, and the support rods 211 in the same support group are arranged at equal intervals. Based on this, on the one hand, it is convenient to apply to the symmetrical components of double-leaf air-raid shelter doors, improving adaptability; on the other hand, it also makes the structure of the temporary protective device symmetrical, thereby improving the protective performance of the temporary protective device.

[0051] In one possible implementation, the support rod 211 has two opposing ends, one end of which is used to connect to the first base, and the other end is constructed as a double-ear end 212 with two parallel and spaced ear plates, and each ear plate is provided with a shaft hole.

[0052] The double-eared end 212 of the support rod 211 forms an open groove 213 with one open end through two ear plates. Correspondingly, the barrier 22 is inserted into the open groove 213. A fixing pin 214 located outside the barrier 22 is inserted through the ear plate to close the open end of the open groove 213.

[0053] Based on the above design, the support rod 211 can be connected to the first base through any suitable structure, ensuring good stability and firmness during the connection. For the connection between the support rod 211 and the barrier component 22, an open groove 213 is formed by a double-ear plate design. The open end of the groove 213 is then closed by any suitable component such as a fixing pin 214, forming a connection hole. The barrier component 22 passes through this connection hole, providing a certain amount of movement. When subjected to external impact, the air-raid shelter door rotates slightly until the barrier component 22 abuts against the support rod 211, causing it to tension and withstand the impact load. Conversely, under normal circumstances, the barrier component 22 is in a relaxed state, which helps ensure its service life, mitigates construction errors in the support rod 211, optimizes dynamic response, and improves structural safety redundancy.

[0054] Optionally, for the connection between the support rod 211 and the first base, one of them has one or two lugs, and the other has a fixing seat adapted to the lugs. The fixing seat has a slot adapted to the lugs and a pin for fixing. Thus, the two are detachably connected by inserting the lugs into the fixing seat. The connection structure is simple, easy to implement, and convenient to assemble and disassemble.

[0055] In one possible implementation, the barrier element 22 may be a cable 221 or a support frame 222;

[0056] When the barrier component 22 is a cable 221, the cable 221 is threaded through the support rod 211 of the same support component 21, and both ends of the cable 221 extend to the second base and are detachably connected to the connector 23; correspondingly, when there are multiple support components 21, there are multiple cables 221 and they are set one-to-one with the support components 21.

[0057] When the barrier component 22 is a support frame 222, the support frame 222 connects multiple support components 21 and forms a hollow truss; correspondingly, the support component 21 is provided with multiple components.

[0058] Based on the above design, the end volume of the cable 221 is relatively small. When the cable 221 is connected to the second base, the connection is more flexible and less affected by the surrounding structure and / or shape, making it more adaptable to the environment. Conversely, the support frame 222 can connect multiple support members 21 simultaneously, making the connection more convenient. However, the support frame 222 is larger in volume and more susceptible to the influence of the surrounding structure and / or shape, limiting its use to specific environments.

[0059] It is easy to understand that when there are multiple support members 21, there are connecting rods between adjacent support members 21. The connecting rods enable multiple support members 21 to form a spatial truss structure, thereby improving the overall integrity of the temporary protective device and helping to improve the protective performance.

[0060] Optionally, if the width of the first base is large, the cable 221 is divided into at least two sub-segments, which are detachably connected by connectors. Based on this, for a wider first base, such as a double-leaf air-raid shelter door, the cable 221 can be segmented to better adapt to specific usage scenarios. It is easy to understand that connectors include, but are not limited to, sleeve 232 connectors, U-clamps, and wedge connectors.

[0061] In one possible implementation, the end of the cable 221 is provided with an attachment 30 adapted to the connector 23. The attachment 30 includes a base 301 and an extension post 302. The base 301 is used to connect the cable 221 and the extension post 302, and the extension post 302 is provided with external threads for connection.

[0062] In one possible implementation, the connector 23 includes a base rod 231 and a sleeve 232; the base rod 231 is inserted into the second base, and one end of the base rod 231 extends out of the second base and is connected to the sleeve 232; the inner circumferential surface of the sleeve 232 is provided with an internal thread adapted to the extension post 302.

[0063] Based on the above design, when the cable 221 is connected to the connector 23 via the attachment 30, the extension post 302 is rotated and inserted into the sleeve 232, and the attachment 30 and the connector 23 are connected by a threaded connection. Conversely, rotating in the opposite direction will disconnect the two.

[0064] Preferably, the sleeve 232 is provided with a first extension plate 401 on its outer periphery, and the base 301 is provided with a second extension plate 402. One of the first extension plate 401 and the second extension plate 402 is provided with a fixing bolt 403, and the other is provided with a screw hole adapted to the fixing bolt 403.

[0065] Accordingly, the first extension plate 401, the second extension plate 402, the fixing bolts 403 and the screw holes form a fixing module;

[0066] Accordingly, at least two fixing modules are provided between the connector 23 and the attachment 30.

[0067] Based on the above design scheme, when the attachment 30 is connected to the connector 23, the first extension plate 401 and the second extension plate 402 in the same fixed module are opposite each other. The fixing bolt 403 is rotated and inserted into the screw hole, increasing the connection point, so as to improve the firmness, stability and reliability of the connection between the attachment 30 and the connector 23.

[0068] As is easy to understand, multiple fixed modules are evenly distributed around the sleeve 232 to improve the uniformity of force at the connection between the attachment 30 and the connector 23, thereby improving their service life while ensuring the connection effect.

[0069] It is worth noting that both the first extension plate 401 and the second extension plate 402 are constructed as annular plates, with a number of screw holes on the circumference of the annular plates adapted to the number of fixing modules. This facilitates the connection of the fixing modules, helps reduce stress concentration, and improves the service life of the connection between the attachment 30 and the connector 23.

[0070] Based on the temporary protective device described above, this embodiment introduces a double-leaf air defense door, which includes a double-leaf door 10 and the temporary protective device. The temporary protective device is detachably connected to the double-leaf door 10 through a support member 21, and several temporary protective devices are provided and spaced apart along the height direction of the double-leaf door 10.

[0071] Based on the above design scheme, in addition to the temporary protective device, the double-leaf air-raid shelter door can also include any other suitable functional modules, making its functions more comprehensive to meet different work requirements and improve its practicality. Furthermore, it is easy to understand that any suitable existing equipment can be selected for these functional modules, offering a wide range of choices.

[0072] Example 2:

[0073] Based on Example 1, this embodiment simulates the protective effect of a double-leaf air-raid shelter door using the aforementioned temporary protective device. Specifically:

[0074] Taking a 7m wide and 4.2m high air-raid shelter door as an example, the door's load-bearing capacity is 0.1 MPa. In MidasGEN, the maximum load on the steel frame door is 345 MPa. (See...) Figure 6 It was close to yield failure. However, after adding temporary protective devices, it was observed... Figure 7 The maximum pressure for steel frame doors is 177 MPa. (See...) Figure 7 It reduces the number of cells by nearly half, providing greater protection.

[0075] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A temporary protective device, characterized in that, It includes support components (21), barrier components (22), and connectors (23); The support member (21) is arranged along the length of the barrier member (22) and is used to detachably connect the first base and the barrier member (22); The barrier (22) is used to form a "tensioned beam" reinforced structure to counteract the deformation of the first matrix caused by the load through reverse deflection; The connector (23) is located at the end of the barrier (22) and is used for detachably connecting the second base and the barrier (22).

2. The temporary protective device according to claim 1, characterized in that, The support member (21) includes a plurality of support rods (211) spaced apart along the length of the barrier member (22), and the length of the support rods (211) gradually decreases from the middle of the first base to the two sides of the first base, so that the end of the support member (21) facing the barrier member (22) forms a curve adapted to the "tensioned beam" reinforcement structure.

3. The temporary protective device according to claim 2, characterized in that, Centered on the middle of the first base, multiple support rods (211) are divided into two symmetrical support groups, and the support rods (211) in the same support group are equally spaced.

4. The temporary protective device according to claim 3, characterized in that, The support rod (211) has two opposite ends, one end of which is used to connect to the first base, and the other end is constructed as a double-ear end (212) with two parallel and spaced ear plates, and each ear plate is provided with a shaft hole. The double-eared end (212) of the support rod (211) forms an open groove (213) with one open end through two ear plates. Correspondingly, the barrier (22) is inserted into the open groove (213). A fixing pin (214) located outside the barrier (22) is inserted through the ear plate to close the open end of the open groove (213).

5. The temporary protective device according to any one of claims 1-4, characterized in that, The barrier component (22) is selected from either a cable (221) or a support frame (222); When the barrier component (22) is a cable (221), the cable (221) is threaded on the support rod (211) of the same support component (21), and the two ends of the cable (221) extend to the second base and are detachably connected to the connector (23); correspondingly, when there are multiple support components (21), there are multiple cables (221) and they are set one-to-one with the support components (21); When the barrier component (22) is selected as a support frame (222), the support frame (222) connects multiple support components (21) and forms a hollow truss; correspondingly, the support component (21) is provided with multiple support components; Accordingly, when there are multiple support members (21), there are connecting rods between adjacent support members (21) so that multiple support members (21) can be connected to form a space truss structure.

6. The temporary protective device according to claim 5, characterized in that, If the width of the first base is large, the cable (221) is divided into at least two sub-segments, and adjacent sub-segments are detachably connected by a connector.

7. The temporary protective device according to claim 5, characterized in that, The end of the cable (221) is provided with an attachment (30) adapted to the connector (23). The attachment (30) includes a base (301) and an extension post (302). The base (301) is used to connect the cable (221) and the extension post (302). The extension post (302) is provided with external threads for connection.

8. The temporary protective device according to claim 7, characterized in that, The connector (23) includes a base rod (231) and a sleeve (232); the base rod (231) is inserted into the second base, and one end of the base rod (231) extends out of the second base and is connected to the sleeve (232); the inner circumferential surface of the sleeve (232) is provided with an internal thread adapted to the extension post (302).

9. The temporary protective device according to claim 8, characterized in that, The sleeve (232) is provided with a first extension plate (401) on its outer periphery, and a second extension plate (402) is provided on the base (301). One of the first extension plate (401) and the second extension plate (402) is provided with a fixing bolt (403), and the other is provided with a screw hole adapted to the fixing bolt (403). Accordingly, the first extension plate (401), the second extension plate (402), the fixing bolts (403), and the screw holes form a fixing module; Accordingly, at least two fixing modules are provided between the connector (23) and the attachment (30).

10. A double-leaf air-raid shelter door, characterized in that, The device includes a double-leaf door (10) and a temporary protective device according to any one of claims 1-9. The temporary protective device is detachably connected to the double-leaf door (10) by a support member (21), and a plurality of the temporary protective devices are provided and spaced apart along the height direction of the double-leaf door (10).

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