A crash-resistant steel security door

Abstract

The utility model relates to security door technical field especially is a kind of steel security door of collision resistance, including door body and the door lock being installed on door body, and door body includes inner layer steel sheet and outer layer steel sheet, and inner layer steel sheet and outer layer steel sheet are connected with intermediate filling layer;Intermediate filling layer includes outer reinforcing main part, and outer reinforcing main part is fixedly connected between inner layer steel sheet and outer layer steel sheet, and outer reinforcing main part is in middle part and is equipped with collision resistance filling interlayer, and the outer surface edge of collision resistance filling interlayer is fixedly connected with the reinforcing rib of multiple equidistance distribution.The utility model described a kind of steel security door of collision resistance, through multilayer composite structure design, effectively promote the impact resistance, pry and fireproof performance of door body;The combination of honeycomb aluminum plate and fireproof plate enhances energy-absorbing shock absorption and heat insulation effect, and the reinforcing rib structure of door lock area improves overall security and durability, applicable to a variety of high security demand place.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to an impact-resistant steel security door. Background Technology

[0002] With increasing public awareness of security, the performance requirements for security doors, as a crucial component of building security, are constantly rising. Traditional security doors are mostly manufactured using single-layer steel plate structures or filled with lightweight materials. While they offer some anti-theft functionality, they generally suffer from weak impact resistance, structural deformation, and vulnerability to damage to the lock area when facing violent attacks or prying. Furthermore, existing security doors offer limited performance in fire resistance, heat insulation, and rust prevention, failing to meet the comprehensive security and multifunctionality demands of modern buildings. Therefore, we propose an impact-resistant steel security door. Utility Model Content

[0003] The main purpose of this utility model is to provide an impact-resistant steel security door, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An impact-resistant steel security door includes a door body and a door lock installed on the door body. The door body includes an inner steel plate and an outer steel plate, with an intermediate filling layer connecting the inner steel plate and the outer steel plate.

[0006] The intermediate filling layer includes an outer reinforcing body, which is fixedly connected between the inner steel plate and the outer steel plate. An impact-resistant filling interlayer is sleeved in the middle of the outer reinforcing body, and the impact-resistant filling interlayer is fixedly connected between the inner steel plate and the outer steel plate. Multiple equally spaced reinforcing ribs are fixedly connected to the outer surface edge of the impact-resistant filling interlayer.

[0007] Preferably, the reinforcing rib is a U-shaped structure and is fixed to the edge of the outer reinforcing body by spot welding.

[0008] By adopting the above technical solution: the reinforcing ribs of the U-shaped structure have good shear resistance and deformation resistance, which can effectively enhance the structural strength of the door lock area; by spot welding, they are fixed to the edge of the impact-resistant filling layer, which not only ensures a firm connection, but also avoids damage to the overall structure of the filling layer, thereby improving the door's impact resistance and anti-pry performance.

[0009] Preferably, the outer reinforcing body includes a reinforcing frame, which is fixedly connected between the inner steel plate and the outer steel plate, and a plurality of abutments corresponding to the positions of the reinforcing ribs are fixedly connected to the inner surface edge of the outer reinforcing body.

[0010] By adopting the above technical solution: the outer reinforcing body forms a stable connection structure with the inner and outer steel plates through the reinforcing frame, thereby improving the overall rigidity of the door; at the same time, abutments corresponding to the positions of the reinforcing ribs are set on the inner side of the reinforcing frame to provide positioning support for the subsequent snap-fit ​​fixing of the reinforcing ribs, thereby enhancing the structural fit accuracy and stability.

[0011] Preferably, the number of abutments is equal to the number of reinforcing ribs, and the abutments are engaged within the corresponding reinforcing ribs.

[0012] By adopting the above technical solution, the abutment and the reinforcing rib are matched one-to-one and interlocked, so that the reinforcing rib and the outer reinforcing body form a structural linkage, which effectively enhances the local rigidity and resistance to damage in the door lock area; this interlocking method not only facilitates installation, but also improves the overall stability and impact resistance of the structure.

[0013] Preferably, the impact-resistant filling interlayer includes a honeycomb aluminum plate, with a No. 1 fireproof plate and a No. 2 fireproof plate fixedly connected to both ends of the honeycomb aluminum plate, the No. 1 fireproof plate being fixedly connected to the inner steel plate, and the No. 2 fireproof plate being fixedly connected to the outer steel plate.

[0014] By adopting the above technical solution: honeycomb aluminum panels, as the core energy-absorbing material, have the characteristics of being lightweight, high-strength, and capable of absorbing energy and shock absorption, effectively absorbing external impact energy; their two ends are connected to fireproof panels No. 1 and No. 2 respectively, forming a stable sandwich structure, which not only improves the overall strength but also integrates fireproof performance and enhances the overall safety performance of the door.

[0015] Preferably, the first fireproof board is a rock wool board, and the second fireproof board is a calcium silicate board.

[0016] By adopting the above technical solutions: Fireproof board No. 1 is made of rock wool board, which has excellent heat insulation performance and high temperature resistance; Fireproof board No. 2 is made of calcium silicate board, which has good fire resistance limit and structural stability; The combination of the two can improve the fire resistance rating of the door while taking into account structural strength and thermal stability, thus meeting the dual requirements of fire prevention and theft prevention.

[0017] Preferably, the outer steel plate has a thickness of 2.0-3.0 mm, and the inner steel plate has a thickness of 1.5-2.5 mm.

[0018] By adopting the above technical solution, the thickness range of the outer steel plate and the inner steel plate is reasonably set so that the structural strength is guaranteed while cost control is taken into account. The thicker outer steel plate can effectively resist external impact, while the slightly thinner inner steel plate reduces the overall weight while ensuring strength, making it easier to install and use.

[0019] Preferably, both the inner and outer steel plates are coated with an anti-rust coating on the side away from the intermediate filler layer.

[0020] By adopting the above technical solution, applying an anti-rust coating to the outer surface of the inner and outer steel plates can effectively prevent the steel plates from oxidizing and corroding due to long-term exposure to air, thus extending the service life of the door. At the same time, the anti-rust coating can also serve as a primer, providing good adhesion for subsequent decorative surface layers and enhancing the door's aesthetics and weather resistance.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. It adopts a multi-layer composite structure design, including an outer steel plate, an inner steel plate, and an intermediate filling layer. The filling layer is composed of honeycomb aluminum panels and fireproof panels. The honeycomb aluminum panels have excellent energy absorption and shock absorption performance, which can effectively absorb external impact energy and significantly improve the impact resistance of the door. At the same time, the fireproof panels not only enhance the heat insulation and fire resistance of the door, but also improve the overall structural stability, thus providing stronger safety protection when facing multiple threats such as violent impacts and fires.

[0023] 2. By setting U-shaped reinforcing ribs in the door lock area and engaging with the abutment blocks on the outer reinforcing body, a reinforced frame with structural linkage is formed, which significantly enhances the local rigidity and resistance to damage in the door lock area, effectively preventing forced lock picking. At the same time, the inner and outer steel plate surfaces are coated with anti-rust coatings, which improves the durability of the door in humid or corrosive environments and extends its service life. The overall structural design is reasonable and the functional integration is high. It has multiple advantages such as anti-theft, impact resistance, anti-pry, fire resistance, and rust prevention, and has good application prospects and market promotion value. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an impact-resistant steel security door according to the present invention;

[0025] Figure 2 This is a schematic diagram of the structural composition of an impact-resistant steel security door according to the present invention;

[0026] Figure 3 This is a schematic diagram of the intermediate filling layer of an impact-resistant steel security door according to this utility model;

[0027] Figure 4 This is a schematic diagram of the external reinforcement body of an impact-resistant steel security door according to this utility model;

[0028] Figure 5 This is a schematic diagram of the impact-resistant filling layer of an impact-resistant steel security door according to the present invention.

[0029] In the diagram: 1. Door body; 2. Door lock; 3. Inner steel plate; 4. Middle filling layer; 41. Outer reinforcing body; 411. Reinforcing frame; 412. Abutment block; 42. Impact-resistant filling interlayer; 421. Honeycomb aluminum plate; 422. No. 1 fireproof board; 423. No. 2 fireproof board; 43. Reinforcing rib; 5. Outer steel plate. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Please see Figure 1-5 This utility model provides a technical solution:

[0034] An impact-resistant steel security door includes a door body 1 and a door lock 2 installed on the door body 1. The door body 1 includes an inner steel plate 3 and an outer steel plate 5, with an intermediate filling layer 4 connecting the inner steel plate 3 and the outer steel plate 5. The outer steel plate 5 has a thickness of 2.0-3.0 mm, and the inner steel plate 3 has a thickness of 1.5-2.5 mm. Both the inner steel plate 3 and the outer steel plate 5 are coated with an anti-rust coating on the side away from the intermediate filling layer 4.

[0035] In this embodiment, the intermediate filling layer 4 includes an outer reinforcing body 41, which is fixedly connected between the inner steel plate 3 and the outer steel plate 5. An impact-resistant filling interlayer 42 is sleeved in the middle of the outer reinforcing body 41, and the impact-resistant filling interlayer 42 is fixedly connected between the inner steel plate 3 and the outer steel plate 5. Multiple equally spaced reinforcing ribs 43 are fixedly connected to the outer surface edge of the impact-resistant filling interlayer 42. The reinforcing ribs 43 have a U-shaped structure and are fixed to the edge of the outer reinforcing body 41 by spot welding. The outer reinforcing body 41 includes a reinforcing frame 411, which is fixedly connected between the inner steel plate 3 and the outer steel plate 5. Multiple abutments 412 corresponding to the positions of the reinforcing ribs 43 are fixedly connected to the inner surface edge of the outer reinforcing body 41. The number of abutments 412 is equal to the number of reinforcing ribs 43, and the abutments 412 are engaged in the corresponding reinforcing ribs 43.

[0036] Through the above scheme: the intermediate filling layer 4 is set between the inner steel plate 3 and the outer steel plate 5, which plays the role of buffering energy absorption, fireproofing and heat insulation and enhancing the overall rigidity; the intermediate filling layer 4 includes an outer reinforcing body 41 and an impact-resistant filling interlayer 42. Multiple U-shaped reinforcing ribs 43 set at the edge of the impact-resistant filling interlayer 42 are fixedly connected to the outer reinforcing body 41 by spot welding, and form a snap-fit ​​with the abutment block 412 on the inner side of the outer reinforcing body 41. This structure not only enhances the overall rigidity of the door body, but also forms a "reinforced frame" around the door lock 2, which significantly improves the impact resistance and anti-pry capability of the door lock area.

[0037] In this embodiment, the impact-resistant filling interlayer 42 includes a honeycomb aluminum plate 421. The two ends of the honeycomb aluminum plate 421 are respectively fixedly connected to a first fireproof plate 422 and a second fireproof plate 423. The first fireproof plate 422 is fixedly connected to the inner steel plate 3, and the second fireproof plate 423 is fixedly connected to the outer steel plate 5. The first fireproof plate 422 is a rock wool board, and the second fireproof plate 423 is a calcium silicate board.

[0038] Through the above scheme: the impact-resistant filling interlayer 42 is located in the middle of the outer reinforcing body 41 to absorb external impact force and has fire resistance performance; the impact-resistant filling interlayer 42 is composed of honeycomb aluminum plate 421, fireproof plate 422 (number one) and fireproof plate 423 (number two); honeycomb aluminum plate 421: has the characteristics of being lightweight, high-strength, and energy-absorbing and shock-absorbing, and is used to absorb external impact energy; fireproof plate 422 (number one) is made of rock wool board, which has good heat insulation and fire resistance performance; fireproof plate 423 (number two) is made of calcium silicate board, which has a high fire resistance limit and structural stability; fireproof plate 422 (number one) is bonded and fixed to the inner steel plate 3, and fireproof plate 423 (number two) is bonded and fixed to the outer steel plate 5, forming a stable interlayer structure.

[0039] It should be noted that this utility model is an impact-resistant steel security door. When the door 1 is subjected to external impact, the impact force is first borne by the outer steel plate 5 with a thickness of 2.0-3.0 mm, and then transmitted to the honeycomb aluminum plate 421 in the middle through the second fireproof plate 423 fixedly connected to it. The honeycomb aluminum plate 421, due to its unique porous structure, can efficiently absorb impact energy, playing a buffering and shock-absorbing role, thereby effectively preventing the overall deformation of the door. Subsequently, the impact force that is not completely absorbed continues to be transmitted inward to the first fireproof plate 422 and the 1.5-2.5 mm thick steel plate 421. The inner steel plate 3, with a thickness of mm, further disperses and resists, ensuring the stability of the door structure. Simultaneously, multiple U-shaped reinforcing ribs 43, located at the edge of the impact-resistant filling layer 42, are fixedly connected to the filling layer 42 by spot welding and form a snap-fit ​​with the abutment block 412 on the inner side of the outer reinforcing body 41. This structure not only enhances the overall rigidity of the door but also forms a "reinforced frame" around the door lock 2, significantly improving the impact resistance and pry resistance of the door lock area. Furthermore, the No. 1 fireproof board 422 uses rock with good heat insulation properties. The cotton board and the No. 2 fireproof board 423 use calcium silicate board with excellent fire resistance. Together with the honeycomb aluminum board 421, they form a composite filling structure with fire resistance, heat insulation and energy absorption. While improving the impact resistance of the door, it also significantly enhances its fire safety performance. The outer sides of the inner and outer steel plates of the door are coated with anti-rust coating, which further extends the service life of the door in complex environments. Thus, it achieves a high degree of integration of multiple functions such as anti-theft, impact resistance, anti-pry, fire resistance and rust prevention, and is suitable for the security protection needs of residential, commercial and important facilities.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant steel security door, comprising a door body (1) and a door lock (2) installed on the door body (1), characterized in that: The door body (1) includes an inner steel plate (3) and an outer steel plate (5), and an intermediate filling layer (4) is connected between the inner steel plate (3) and the outer steel plate (5). The intermediate filling layer (4) includes an outer reinforcing body (41), which is fixedly connected between the inner steel plate (3) and the outer steel plate (5). An impact-resistant filling interlayer (42) is sleeved in the middle of the outer reinforcing body (41), and the impact-resistant filling interlayer (42) is fixedly connected between the inner steel plate (3) and the outer steel plate (5). Multiple equally spaced reinforcing ribs (43) are fixedly connected to the outer surface edge of the impact-resistant filling interlayer (42).

2. The impact-resistant steel security door according to claim 1, characterized in that: The reinforcing rib (43) is a U-shaped structure and is fixed to the edge of the outer reinforcing body (41) by spot welding.

3. The impact-resistant steel security door according to claim 1, characterized in that: The outer reinforcing body (41) includes a reinforcing frame (411), which is fixedly connected between the inner steel plate (3) and the outer steel plate (5). The inner surface edge of the outer reinforcing body (41) is fixedly connected with a plurality of abutments (412) corresponding to the positions of the reinforcing ribs (43).

4. The impact-resistant steel security door according to claim 3, characterized in that: The number of abutments (412) is equal to the number of reinforcing ribs (43), and the abutments (412) are engaged within the corresponding reinforcing ribs (43).

5. The impact-resistant steel security door according to claim 1, characterized in that: The impact-resistant filling interlayer (42) includes a honeycomb aluminum plate (421). The two ends of the honeycomb aluminum plate (421) are respectively fixedly connected to a first fireproof plate (422) and a second fireproof plate (423). The first fireproof plate (422) is fixedly connected to the inner steel plate (3), and the second fireproof plate (423) is fixedly connected to the outer steel plate (5).

6. The impact-resistant steel security door according to claim 5, characterized in that: The No. 1 fireproof board (422) is a rock wool board, and the No. 2 fireproof board (423) is a calcium silicate board.

7. The impact-resistant steel security door according to claim 1, characterized in that: The outer steel plate (5) has a thickness of 2.0-3.0 mm, and the inner steel plate (3) has a thickness of 1.5-2.5 mm.

8. The impact-resistant steel security door according to claim 1, characterized in that: The inner steel plate (3) and the outer steel plate (5) are both coated with an anti-rust coating on the side away from the intermediate filler layer (4).

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