Lightweight high-strength foam aluminum alloy plate civil air defense door

Abstract

A light high-strength foam aluminum alloy plate civil air defense door comprises a door leaf and a door frame, and the door leaf is hinged to the door frame. The light high-strength foam aluminum alloy plate civil air defense door comprises a protective layer, the protective layer comprises an outer protective layer and an inner protective layer, and a foam aluminum structural layer is arranged between the outer protective layer and the inner protective layer; mounting holes are formed in the middle foamed aluminum structural layer, the outer protective layer and the inner protective layer are arranged on the two sides of the middle foamed aluminum structural layer respectively, and bolts penetrate through the mounting holes to fasten the outer protective layer, the inner protective layer and the middle foamed aluminum structural layer. Through the structural design, the civil air defense door made of the light high-strength foam aluminum alloy plate takes the foam aluminum as a core material, so that the material performance of the foam aluminum can be fully played, the civil air defense door has the excellent performances of light weight, electromagnetic radiation interference resistance and the like, and meanwhile, the civil air defense door can be ensured to have reliable structural strength.

Description

Technical Field

[0001] The utility model relates to the technical field related to civil air defense equipment, and more specifically, particularly relates to a light and high-strength foam aluminum alloy plate civil air defense door. Background Art

[0002] Existing civil air defense door panels mostly use reinforced concrete door panels or steel structure door panels. For reinforced concrete door panels, the door panels themselves have a large weight, poor crack resistance, and poor thermal insulation and sound insulation performance. For steel structure door panels, the door panels have poor corrosion resistance and are prone to rust in environments with high humidity and corrosive media. In addition, both reinforced concrete door panels and steel structure door panels have poor thermal insulation and anti-electromagnetic interference performance. Utility Model Content

[0003] 1. Technical issues

[0004] To sum up, how to optimize the structure of existing civil air defense door panels to improve their thermal insulation and other performance has become an urgent problem to be solved by technical personnel in this field.

[0005] (II) Technical solution

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a lightweight high-strength foam aluminum alloy plate civil air defense door. In the utility model, the lightweight high-strength foam aluminum alloy plate civil air defense door comprises a door leaf and a door frame, wherein the door leaf is hinged to the door frame;

[0008] The lightweight high-strength foam aluminum alloy plate civil air defense door comprises a protective layer, the protective layer comprises an outer protective layer and an inner protective layer, and a foam aluminum structural layer is arranged between the outer protective layer and the inner protective layer;

[0009] A mounting hole is provided on the middle foam aluminum structure layer, the outer protective layer and the inner protective layer are respectively provided on both sides of the middle foam aluminum structure layer, and bolts are passed through the mounting hole to fasten the outer protective layer and the inner protective layer to the middle foam aluminum structure layer.

[0010] Preferably, in the lightweight and high-strength foam aluminum alloy plate civil air defense door provided by the utility model, the civil air defense door leaf (1) comprises two aluminum alloy thin plates or stainless steel thin plates, and foam aluminum material is filled between the aluminum alloy thin plates or stainless steel thin plates to form a sandwich structure; the civil air defense door frame (3) is made of L-shaped steel profile; and the civil air defense door leaf is installed on the civil air defense door frame by at least two sets of hinge assemblies (4).

[0011] Preferably, the lightweight and high-strength foam aluminum alloy plate civil defense door provided by the utility model also includes a sealing structure (5); a sealing structure is arranged on a side of the civil defense door frame used to abut against the civil defense door leaf, wherein the sealing structure includes a flat block structure and an oblique block structure, the flat block structure is welded and fixed perpendicularly to the outer side surface of the civil defense door frame, and the oblique block structure is inclined relative to the outer side surface of the civil defense door frame and welded and fixed, the flat block structure and the oblique block structure form a closing structure, and a sealing strip is assembled between the flat block structure and the oblique block structure, and the opening formed between the flat block structure and the oblique block structure can be used for the civil defense door leaf to abut against the sealing strip after closing.

[0012] Preferably, in the lightweight high-strength foam aluminum alloy plate civil air defense door provided by the utility model, the side edges of the civil air defense door leaf are folded and formed into a edging, and the folded steel plate is cut according to the edge length of the civil air defense door leaf to form an edging section (6), and the two ends of the edging section are cut at a 45° angle for docking the top edging and the side edging of the civil air defense door leaf.

[0013] Preferably, in the lightweight and high-strength foam aluminum alloy plate civil air defense door provided by the utility model, the hinge assembly includes a first base plate and a second base plate, two first card plates arranged at intervals are vertically fixed on the first base plate to form a door frame hinge part, and a second card plate is vertically fixed on the second base plate to form a door leaf hinge part, the door frame hinge part is fixed to the door frame of the civil air defense door with multiple groups of bolts, and the door leaf hinge part is fixed to the door leaf of the civil air defense door with multiple groups of bolts, the second card plate is clamped between the two first card plates, a bearing is arranged on the lower side of the second card plate and between the second card plate and the first card plate, and an adjustment block is arranged on the upper side of the second card plate and between the second card plate and the first card plate.

[0014] Preferably, in the lightweight and high-strength foam aluminum alloy plate civil defense door provided by the utility model, an adjustment long hole is provided on the first clamping plate, and the length direction of the adjustment long hole is perpendicular to the first substrate, and a mounting circular hole is provided on the second clamping plate, and bolts for assembling the door frame hinge part and the door leaf hinge part are provided through the first clamping plate and the second clamping plate, and the door leaf hinge part can be adjusted in position relative to the door frame hinge part through the adjustment long hole, so as to provide an avoidance space for the rotation of the door leaf of the civil defense door when the door leaf of the civil defense door is opened.

[0015] Preferably, in the lightweight high-strength foam aluminum alloy plate civil air defense door provided by the utility model, the holes opened on the original plate for making the door leaf are all provided with an annular hole sealing structure (7); when installing the hinge assembly and the door lock system, all rotating parts are scrubbed clean and oiled, and regular maintenance is performed during the later use.

[0016] Preferably, in the lightweight and high-strength foam aluminum alloy plate civil air defense door provided by the utility model, an artistic coating or an artistic mark is provided on the outer side edge of the door leaf of the civil air defense door according to the customer's artistic requirements.

[0017] Preferably, in the lightweight and high-strength foam aluminum alloy plate civil air defense door provided by the present invention, after the door leaves of the civil air defense door are assembled and welded, the inner surface of the door leaves and the periphery of the door leaves are smoothed, and the flatness is <2.

[0018] Preferably, in the lightweight and high-strength foam aluminum alloy plate civil air defense door provided by the utility model, the door lock system adopts a linkage locking mechanism, the door lock system is connected to the inner thread of the civil air defense door leaf through a thread and is coated with a thread fastener, grease is applied to the surface of the active friction parts of the door lock system, and gaskets and / or washers can be arranged at the installation location of the shaft components of the door lock system to adjust the gap.

[0019] (III) Beneficial effects

[0020] The utility model provides a lightweight high-strength foam aluminum alloy plate civil air defense door. In the utility model, the lightweight high-strength foam aluminum alloy plate civil air defense door includes a door leaf and a door frame, wherein the door leaf is hinged on the door frame; the lightweight high-strength foam aluminum alloy plate civil air defense door includes a protective layer, wherein the protective layer includes an outer protective layer and an inner protective layer, and a foam aluminum structural layer is arranged between the outer protective layer and the inner protective layer; a mounting hole is arranged on the middle foam aluminum structural layer, wherein the outer protective layer and the inner protective layer are arranged on both sides of the middle foam aluminum structural layer, and bolts are passed through the mounting holes to fasten the outer protective layer and the inner protective layer to the middle foam aluminum structural layer. Through the above-mentioned structural design, the lightweight high-strength foam aluminum alloy plate civil air defense door provided by the utility model uses foam aluminum as the core material to manufacture the civil air defense door, which can give full play to the material properties of foam aluminum, so that the civil air defense door has excellent properties such as light weight and resistance to electromagnetic radiation interference, and can also ensure that the civil air defense door has reliable structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0022] Figure 1 This is a structural schematic diagram of a civil air defense door made by a method for making a civil air defense door made of a lightweight and high-strength foamed aluminum alloy plate in an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the civil air defense door in the horizontal direction in the embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the civil air defense door in the vertical direction in the embodiment of the utility model;

[0025] Figure 4 It is a partial structural schematic diagram of the civil air defense door in the embodiment of the utility model;

[0026] Figure 5 This is a structural schematic diagram of one side of the civil air defense door equipped with a door lock system in an embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the other side of the civil air defense door in the embodiment of the utility model;

[0028] Figure 7 It is a side view of the door leaf of the civil air defense door in the embodiment of the utility model;

[0029] Figure 8 It is a top view of the door leaf of the civil air defense door in the embodiment of the utility model;

[0030] Fig. 9 This is a structural cross-sectional view of the upper handle of the door lock system in the embodiment of the utility model;

[0031] Fig.10 This is a structural cross-sectional view of the upper door bolt of the door lock system in the embodiment of the utility model;

[0032] Fig.11 for Fig. 9 A partial structural cross-sectional view of the door leaf of the civil air defense door after the handle is removed;

[0033] Fig.12 This is a schematic diagram of the structure of the door leaf edge wrapping in the embodiment of the utility model;

[0034] Fig.13 This is a schematic diagram of the structure of the edge-wrapped end of the door leaf in an embodiment of the utility model;

[0035] Fig.14 This is a schematic diagram of the structure of the door lock system in the embodiment of the utility model;

[0036] Fig.15 It is a side view of a door leaf of a civil air defense door in a specific embodiment of the utility model;

[0037] Fig.16 for Fig.15 A longitudinal cross-sectional view of

[0038] Fig.17 It is a schematic diagram of the partial structure of the door leaf of the civil air defense door in the embodiment of the utility model;

[0039] Fig.18 It is a schematic diagram of the partial structure of another part of the door leaf of the civil air defense door in the embodiment of the utility model;

[0040] Fig.19 This is a schematic cross-sectional structure diagram of a lightweight and high-strength foam aluminum alloy plate civil air defense door in an embodiment of the utility model;

[0041] Fig. 20 This is a schematic diagram of the structure of the foam aluminum structure layer used in the lightweight and high-strength foam aluminum alloy plate civil air defense door in one embodiment of the utility model;

[0042] Fig.21 It is a schematic structural diagram of the foam aluminum structural layer used in the lightweight and high-strength foam aluminum alloy plate civil defense door in another embodiment of the utility model.

[0043] exist Figures 1 to 18 In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0044] Civil air defense door leaf 1, door lock system 2, civil air defense door frame 3, hinge assembly 4, sealing structure 5, edging section 6, hole edge sealing structure 7, handle 8, bolt 9, panel 10, foam aluminum material 11, square steel for packaging 12, dovetail block 13, bolt 14. DETAILED DESCRIPTION

[0045] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0046] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0047] Please refer to Figures 1 to 21 ,in, Figure 1 This is a structural schematic diagram of a civil air defense door made by a method for making a civil air defense door made of a lightweight and high-strength foamed aluminum alloy plate in an embodiment of the utility model; Figure 2 It is a schematic diagram of the cross-sectional structure of the civil air defense door in the horizontal direction in the embodiment of the utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the civil air defense door in the vertical direction in the embodiment of the utility model; Figure 4 It is a partial structural schematic diagram of the civil air defense door in the embodiment of the utility model; Figure 5 This is a structural schematic diagram of one side of the civil air defense door equipped with a door lock system in an embodiment of the utility model; Figure 6 This is a schematic diagram of the structure of the other side of the civil air defense door in the embodiment of the utility model; Figure 7 It is a side view of the door leaf of the civil air defense door in the embodiment of the utility model; Figure 8 It is a top view of the door leaf of the civil air defense door in the embodiment of the utility model; Fig. 9 This is a structural cross-sectional view of the upper handle of the door lock system in the embodiment of the utility model; Fig.10 This is a structural cross-sectional view of the upper door bolt of the door lock system in the embodiment of the utility model; Fig.11 for Fig. 9 A partial structural cross-sectional view of the door leaf of the civil air defense door after the handle is removed; Fig.12 This is a schematic diagram of the structure of the door leaf edge wrapping in the embodiment of the utility model; Fig.13 This is a schematic diagram of the structure of the edge-wrapped end of the door leaf in an embodiment of the utility model; Fig.14 This is a schematic diagram of the structure of the door lock system in the embodiment of the utility model; Fig.15 It is a side view of a door leaf of a civil air defense door in a specific embodiment of the utility model; Fig.16 for Fig.15 A longitudinal cross-sectional view of Fig.17 It is a schematic diagram of the partial structure of the door leaf of the civil air defense door in the embodiment of the utility model; Fig.18 It is a schematic diagram of the partial structure of another part of the door leaf of the civil air defense door in the embodiment of the utility model; Fig.19 This is a schematic cross-sectional structure diagram of a lightweight and high-strength foam aluminum alloy plate civil air defense door in an embodiment of the utility model; Fig. 20 This is a schematic diagram of the structure of the foam aluminum structure layer used in the lightweight and high-strength foam aluminum alloy plate civil air defense door in one embodiment of the utility model; Fig.21 It is a schematic structural diagram of the foam aluminum structural layer used in the lightweight and high-strength foam aluminum alloy plate civil defense door in another embodiment of the utility model.

[0048] The utility model provides a method for manufacturing a lightweight high-strength foam aluminum alloy plate civil air defense door. In the utility model, the method for manufacturing the lightweight high-strength foam aluminum alloy plate civil air defense door comprises the following steps:

[0049] Step 1: Make the door leaf 1 of the civil defense door.

[0050] The utility model uses foamed aluminum as the main manufacturing material of the door leaf 1 of the civil air defense door. The foamed aluminum material is a porous metal material formed by adding additives to pure aluminum or aluminum alloy and undergoing a foaming process. The foamed aluminum has the characteristics of both metal and bubble materials. The foamed aluminum material has the characteristics of low density, high impact absorption, high temperature resistance, strong fire resistance, corrosion resistance, sound insulation and noise reduction, low thermal conductivity, high electromagnetic shielding, strong weather resistance, filtering ability, easy processing, easy installation, high forming accuracy, and surface coating. The advantages of this material are: excellent physical properties, chemical properties, etc.; performance characteristics: light weight, high specific stiffness, etc.; structural characteristics: larger pore size, large specific surface area, etc. In order to ensure the structural strength of the door leaf, the utility model sets a structural reinforcement part on the front and back sides of the foamed aluminum (the structural reinforcement part uses a metal plate, such as a stainless steel plate).

[0051] Specifically, the utility model uses two aluminum alloy sheets or stainless steel sheets as panels (or can be understood as protective layers), a metal frame can be set between the two panels to ensure that a predetermined gap is maintained between the two panels (at the same time, the metal frame can also improve the overall structural strength of the civil air defense door leaf 1), and a foamed aluminum material is filled between the two panels to form a sandwich structure (the foamed aluminum material forms a foamed aluminum structural layer) to make the original plate of the door leaf (a sandwich structure, the outer two layers are protective layers, and the middle layer is a foamed aluminum structural layer). In order to ensure the stability of the foamed aluminum material (foamed aluminum structural layer) filled between the two panels (protective layers), the utility model can set reinforcing ribs or reinforcing ribs on the inner side of the panel, and the reinforcing ribs or reinforcing ribs can be used to increase the firmness of the foamed aluminum material between the panels.

[0052] Please refer to Fig.15 and Fig.16 ,in, Fig.15 It is a side view of a door leaf of a civil air defense door in a specific embodiment of the utility model; Fig.16 for Fig.15 Longitudinal cross-sectional view of .

[0053] As can be seen from the above, the door leaf 1 of the civil air defense door is mainly made of a panel 10 and a foam aluminum material 11. The foam aluminum material 11 is similar to the sponge material in the prior art (the difference is that the foam aluminum material 11 is made of metal aluminum). Although the foam aluminum material 11 has many advantages, it is not suitable for welding, and the panel 10 structure outside the door leaf 1 of the civil air defense door needs to be fixed with the foam aluminum material 11. Therefore, the utility model proposes the following optimized design to achieve reliable fixation of the door leaf panel 10 and the foam aluminum material 11 filled inside. The optimized design is as follows: small holes are evenly distributed on the entire piece of foam aluminum material 11, dovetail groove structures are set at both ends of the small holes, and dovetail blocks 13 (the dovetail blocks 13 are made of hard materials with slight elasticity) are accommodated in the dovetail grooves. The panel 10 is set on both sides of the foam aluminum material 11, and bolts 14 are used to pass through the dovetail blocks 13 and the small holes to achieve the fastening of the panel 10 and the foam aluminum material 11. Regarding the encapsulation of the side of the civil air defense door leaf 1, the utility model can extend the side of the door leaf panel 10 outward relative to the foam aluminum material 11 and bend the edge inward to form a trough structure that can be loaded with a steel plate or square steel 12 for encapsulation. After the steel plate or square steel 12 is loaded, the side of the civil air defense door leaf 1 is encapsulated. In addition, the utility model will also provide hole structures with different functions (such as handles or rotating shafts for installing door lock systems, etc.) on the civil air defense door leaf 1. The utility model will pre-embed the shaft hole structure after the civil air defense door leaf 1 is opened, and finally complete the installation of the door lock system. After the encapsulation square steel 12 is provided, the utility model can also provide an edge wrapping 15 on the side of the civil air defense door leaf 1. The edge wrapping 15 can be fixedly connected to the encapsulation square steel 12 and the panel 10 by welding.

[0054] After the door leaf production board is prepared, the door leaf production board is cut according to the size and shape of the hole where the civil air defense door is to be installed. Generally, the door leaf is a rectangular door leaf structure. According to the installation requirements of the door lock system 2 of the civil air defense door, holes are opened on the door leaf production board for installing the door lock system 2, and then the cut and punched door leaf production board is hemmed to form the door leaf 1 of the civil air defense door.

[0055] After the door leaf is cut, it is necessary to edge the civil air defense door leaf 1 (using the edge segment 6 to edge each side of the civil air defense door leaf 1). The edge step is: select a thin steel plate as the edge material, and after preliminary cutting into strips, use the long steel plate as the material to fold it according to the thickness of the side of the civil air defense door leaf 1 to form a profile with a U-shaped cross section, so that the profile can be stuck on the side (two sides and upper and lower sides) of the civil air defense door leaf 1. After the long steel plate is bent and formed, the folded steel plate is sheared for the second time according to the edge length of the civil air defense door leaf 1, and an edge segment 6 with the same length as the two sides and upper and lower sides of the civil air defense door leaf 1 is formed. Then the edge segment 6 is sheared for the third time, that is, the two ends of the edge segment 6 are cut at 45°, which is used for the butt joint of the top edge edge and the side edge edge of the civil air defense door leaf 1.

[0056] Furthermore, the edge of the civil air defense door leaf 1 is shaped, and the edge of the civil air defense door leaf 1 is folded outward to form a sealing edge, and the sealing edge can be against the sealing strip after the civil air defense door leaf 1 is closed. The edge of the civil air defense door leaf 1 is a steel one-piece structure, which can ensure the structural strength of the edge. After the edge is clamped onto the side of the civil air defense door leaf 1, the edge can be fixed by setting bolts or rivets, or by welding.

[0057] The utility model is provided with a door lock system 2 on a door leaf 1 of a civil air defense door. In order to be able to install the door lock system 2, the utility model performs a hole opening process on the door leaf in step one, and a circular hole sealing edge structure 7 is provided on the holes opened on the original plate for manufacturing the door leaf. Specifically, the hole sealing edge structure 7 is made of steel material.

[0058] The utility model is provided with a door lock system 2 on a civil air defense door leaf 1. The door lock system 2 includes a linkage rod, various shaft components and a bolt 9. The shaft structure is first fixed at the position where the bolt 9 needs to be installed on the civil air defense door leaf 1. The front end portion and the rear end portion of the bolt 9 form an obtuse angle structure. A sliding hole is provided on the rear end portion of the bolt 9. The corner of the bolt 9 (the corner formed by the front end portion and the rear end portion) can be rotatably installed on the above-mentioned shaft structure. A slider is provided on the linkage rod. The slider is slidably matched with the sliding hole. A plurality of bolts 9 are provided on the same side of the civil air defense door leaf 1. The bolts 9 on the same side are matched with the same linkage rod to realize linkage. The linkage rods provided on the adjacent two sides of the civil air defense door leaf 1 are linked by a T-shaped member. The T-shaped member is installed on the civil air defense door leaf 1 through the shaft structure, and the two ends are hinged with the linkage rod. Among the plurality of linkage rods, one linkage rod is connected to the handle 8. The linkage rod is operated by rotating the handle 8 to complete unlocking or locking.

[0059] Specifically, in step one, when installing the door lock system 2, the door lock system 2 adopts a linkage locking mechanism, the door lock system 2 is connected to the inner thread of the civil defense door leaf 1 through a thread and is coated with a thread fastener, grease is applied to the surface of the active friction part of the door lock system 2, and gaskets and / or washers can be set at the installation location of the shaft components of the door lock system 2 to adjust the gap.

[0060] Step 2: Make the door frame of the civil defense door 3.

[0061] The door frame 3 of the civil air defense door is a structure fixedly installed at the passage opening, and is also used for the installation of the door leaf. Therefore, it is necessary to maintain a high degree of installation firmness on the building, and at the same time, it should have reliable sealing between the door leaf 1 of the civil air defense door.

[0062] Before installing the civil air defense door frame 3, the opening of the building needs to be processed first, specifically to ensure the flatness of the edge of the opening. If it is not flat, concrete slurry can be used to fill it, and then holes are drilled on the building according to the positions of the expansion bolts set on the civil air defense door frame 3. After completing the above operations, the civil air defense door frame 3 is made: L-shaped steel profiles (L-shaped steel profiles are long straight steel profiles with an L-shaped cross section) are used as door frame making materials, and the door frame making materials are cut and formed into a multi-section structure according to the size and shape of the opening of the civil air defense door to be installed, and each section is installed to the edge of one side of the opening where the civil air defense door leaf 1 is set, and each section of the door frame making material is fixed and installed by expansion bolts, and the door frame making materials at the adjacent two ends are offset. The above-mentioned can realize the fixed installation of the civil defense door frame 3. In order to meet the sealing contact between the civil defense door leaf 1 and the civil defense door frame 3 after closing, the utility model also includes the step of making a sealing structure 5 in step two: a sealing structure 5 is set on the side of the civil defense door frame 3 used to resist the civil defense door leaf 1, wherein the sealing structure 5 includes a flat block structure and an oblique block structure, the flat block structure is welded and fixed perpendicular to the outer side surface of the civil defense door frame 3, the oblique block structure is inclined relative to the outer side surface of the civil defense door frame 3 and welded and fixed, the flat block structure and the oblique block structure form a closing structure, and the sealing strip is assembled between the flat block structure and the oblique block structure. The opening formed between the flat block structure and the oblique block structure can be used for the civil defense door leaf 1 to resist the sealing strip after closing.

[0063] In the utility model, the sealing strip is sponge rubber, which is in the shape of a long strip with four side surfaces. One of the side surfaces is the rear back, which abuts against the civil defense door frame 3. Two of the side surfaces are two side surfaces, which contact the inner side surfaces of the flat block structure and the oblique block structure. The fourth side surface is the front surface, which is a wavy structure and is used to abut against the sealing edge provided on the edge of the civil defense door leaf 1. The sealing edge is squeezed and deformed to achieve airtight contact between the civil defense door leaf 1 and the civil defense door frame 3.

[0064] It should be noted that: when installing the hinge assembly 4 and the door lock system 2 of the utility model, all rotating parts are scrubbed clean and oiled, and regular maintenance is carried out during the later use; the outer side of the civil air defense door leaf 1 is provided with an art coating or art mark according to the customer's art requirements; after the civil air defense door leaf 1 is assembled and welded, the inner surface of the civil air defense door leaf 1 and the periphery of the door leaf are smoothed, and the flatness is <2.

[0065] Step 3: Install the civil air defense door leaf 1.

[0066] Install the door leaf 1 of the civil air defense door on the door frame 3 of the civil air defense door. Specifically, the utility model uses at least two groups of hinge assemblies 4 to install the door leaf 1 of the civil air defense door on the door frame 3 of the civil air defense door. In step three, it also includes the step of manufacturing the hinge assembly 4, vertically fixing two first card plates spaced apart on the first substrate to form a door frame hinge part, vertically fixing a second card plate on the second substrate to form a door leaf hinge part, fixing the door frame hinge part to the door frame 3 of the civil air defense door with multiple groups of bolts, fixing the door leaf hinge part to the door leaf 1 of the civil air defense door with multiple groups of bolts, inserting the second card plate between the two first card plates, setting a bearing on the lower side of the second card plate and between the second card plate and the first card plate, and setting an adjustment block on the upper side of the second card plate and between the second card plate and the first card plate. Furthermore, in step three, an adjustment long hole is provided on the first card plate, and the length direction of the adjustment long hole is perpendicular to the first substrate. A mounting circular hole is provided on the second card plate, and bolts for assembling the door frame hinge part and the door leaf hinge part are provided through the first card plate and the second card plate, and the door leaf hinge part can be adjusted in position relative to the door frame hinge part through the adjustment long hole, so as to provide an avoidance space for the rotation of the civil defense door leaf 1 when the civil defense door leaf 1 is opened.

[0067] From the above, it can be known that the utility model provides a method for manufacturing a lightweight high-strength foam aluminum alloy plate civil air defense door, and the method for manufacturing a lightweight high-strength foam aluminum alloy plate civil air defense door includes: step 1, manufacturing a door leaf 1 of a civil air defense door, filling foam aluminum material between two aluminum alloy sheets or stainless steel sheets to form a door leaf manufacturing original plate with a sandwich structure, shearing the door leaf manufacturing original plate according to the size and shape of the hole for installing the civil air defense door as required, opening holes in the door leaf manufacturing original plate according to the installation requirements of the door lock system 2 of the civil air defense door for installing the door lock system 2, and then The original plate for making the door leaf is wrapped to form the door leaf 1 of the civil air defense door; Step 2, the door frame 3 of the civil air defense door is made, and L-shaped steel profiles are used as the door frame making material. The door frame making material is cut and formed into a multi-section structure according to the size and shape of the opening where the civil air defense door is installed, and each section is installed to the side edge of the opening to set the door leaf 1 of the civil air defense door, and the door frame making materials of each section are fixed and installed by expansion bolts, and the door frame making materials at the adjacent two ends are offset; Step 3, the door leaf 1 of the civil air defense door is installed, and at least two sets of hinge assemblies 4 are used to install the door leaf 1 of the civil air defense door to the door frame 3 of the civil air defense door. The utility model adopts the above-mentioned method to make a lightweight and high-strength foam aluminum alloy plate civil air defense door. The civil air defense door is made of foam aluminum as the core material, which can give full play to the material properties of foam aluminum, so that the civil air defense door has excellent properties such as light weight and resistance to electromagnetic radiation interference, and can also ensure that the civil air defense door has reliable structural strength.

[0068] Compared with the prior art, the civil air defense door produced by the utility model has the following technical effects:

[0069] 1. The foam aluminum alloy structure civil air defense door uses a foam aluminum alloy core layer in the middle of the door leaf, which can reach the strength of concrete and steel structure filling, which is beneficial to avoid stress concentration, prolong service life, and has the function of sound absorption and heat insulation;

[0070] 2. Different from the existing honeycomb panels bonded with adhesives, the foam aluminum alloy core panel of the utility model is completely non-combustible, and the layers are composited, and all connections are metallurgical connections. The entire foam aluminum alloy core layered structure is a pure metal structure, which can be welded and processed twice, is light in weight, has high strength, high rigidity, good stability, no pollution, good energy absorption effect, and can be completely recycled;

[0071] 3. The foam aluminum alloy structure civil air defense door of the utility model can achieve different civil air defense levels by changing the size of the foam aluminum alloy core hole inside the door leaf and the thickness of the core plate.

[0072] The manufacturing method of the lightweight and high-strength foam aluminum alloy plate civil defense door provided by the utility model can be essentially divided into two steps: step one, using two hard structure plates as protective layers, spacing the two protective layers and forming a filling space; step two, loading the foam aluminum structure layer into the filling space, the protective layer and the foam aluminum structure layer absorb the impact energy, and the foam aluminum structure layer performs electromagnetic shielding and heat insulation.

[0073] In the above two steps, the utility model adopts a protective layer and a foam aluminum structural layer to form a "sandwich" structure, that is, a three-layer structure of protective layer-foam aluminum structural layer-protective layer. Among them, the foam aluminum structural layer realizes the functions of buffering, electromagnetic shielding, heat insulation, etc., and the protective layer can serve as the outer protective structure of the foam aluminum structural layer while playing a role in impact resistance, so that the foam aluminum material can be used in the production of civil air defense door panels. In the utility model, the protective layer is preferably a stainless steel plate structure (the protective layer is a steel plate, and the two protective layers are arranged in parallel and spaced apart), and the protective layer and the foam aluminum structural layer are assembled by bolt assemblies to achieve non-welding type. Of course, the utility model can also adopt other methods to achieve the fixed connection between the protective layer and the foam aluminum structural layer, such as mortise and tenon structure.

[0074] As can be seen from the above, the protective layer can also absorb a certain amount of impact energy through its own deformation during the process of resisting external impact. Therefore, in order to increase the absorption of impact energy by the protective layer and reduce the energy absorption pressure of the foam aluminum structure layer, the utility model proposes the following structural optimizations for the protective layer: 1. The protective layer is a planar structure; 2. The protective layer is a smooth curved surface structure. When the protective layer is a smooth curved surface structure, the convex surface of the protective layer faces the direction of the impact energy source, which can not only increase the energy absorption area of ​​the protective layer, but also increase the deformability of the protective layer.

[0075] The basic material of the foam aluminum structure layer is metal aluminum or aluminum alloy material. The utility model uses metal aluminum or aluminum alloy material as an aluminum substrate, adds a foaming agent into the aluminum substrate, forms closed-cell bubbles in the aluminum substrate through the foaming agent, and controls the addition metering of the foaming agent so that the pore diameter range of the closed-cell bubbles formed on the aluminum substrate after foaming is 0.3-7mm.

[0076] The bubbles formed by foaming in the aluminum substrate of the utility model can be closed-cell bubbles (bubbles are not connected to each other) or through-hole bubbles (bubbles are connected to each other). When the through-hole bubble structure is adopted, the utility model adds a foaming agent to the aluminum substrate (the amount added is greater than the amount added to form closed-cell bubbles, and the foaming volume is increased by increasing the amount of the foaming agent, thereby achieving the connection between the bubbles), and through-hole bubbles are formed in the aluminum substrate through the foaming agent, and the aperture diameter of the through-hole bubbles ranges from 0.3 to 7 mm.

[0077] Specifically, the porosity of the foam aluminum structure layer is 63% to 90%.

[0078] Based on the above-mentioned method for making a lightweight high-strength foam aluminum alloy plate civil air defense door, the utility model also provides a lightweight high-strength foam aluminum alloy plate civil air defense door. In the utility model, the lightweight high-strength foam aluminum alloy plate civil air defense door includes a door leaf and a door frame, the door leaf is hinged on the door frame, and the door leaf is made by the above-mentioned method for making a lightweight high-strength foam aluminum alloy plate civil air defense door.

[0079] Specifically, the lightweight and high-strength foam aluminum alloy plate civil defense door includes an outer protective layer, an inner protective layer and an intermediate foam aluminum structural layer; mounting holes are arranged on the intermediate foam aluminum structural layer, and the outer protective layer and the inner protective layer are arranged on both sides of the intermediate foam aluminum structural layer. Bolts are passed through the mounting holes to fasten the outer protective layer and the inner protective layer to the intermediate foam aluminum structural layer.

[0080] In the embodiment of the utility model, the main focus is on the optimized design of the assembly structure of the protective layer and the intermediate foam aluminum structural layer: a dovetail groove is provided at the end of the mounting hole set in the intermediate foam aluminum structural layer, a dovetail block is provided in the dovetail groove, and bolts are used to pass through the dovetail block and the mounting hole to fasten the outer protective layer and the inner protective layer to the intermediate foam aluminum structural layer.

[0081] In addition, the utility model can also realize the hemming of the surrounding sides through the structural design of the protective layer. The specific structure is: the sides of the outer protective layer and the inner protective layer extend outward relative to the middle foam aluminum structure layer and the edges are bent inward to form a slot structure that can be loaded with a steel plate or square steel for packaging, and the steel plate or square steel is loaded into the slot structure to realize the side packaging.

[0082] Furthermore, the utility model provides a door leaf opening on the door leaf, and a shaft structure is embedded in the door leaf opening to realize the installation of the door lock system shaft or the door leaf handle.

[0083] As can be seen from the above, the utility model provides a lightweight and high-strength foam aluminum alloy plate civil air defense door and a method for manufacturing the civil air defense door. The utility model's structural optimization of the civil air defense door is mainly reflected in the application of foam aluminum materials in the field of civil air defense, especially the breakthrough use of foam aluminum materials as a manufacturing material for civil air defense door leaves, so that the civil air defense door leaves have lightweight, high strength, shielding, sound insulation, moisture resistance, energy absorption, anti-collision, corrosion resistance and other properties, which are very suitable for application and promotion in protective engineering. In addition, the utility model specifically adopts a foam aluminum material with a closed-cell structure. Due to the closed-cell structure design, the impact resistance of the foam aluminum structural layer can be improved (stronger energy absorption).

[0084] The utility model provides a method for manufacturing a lightweight high-strength foam aluminum alloy plate civil air defense door. The lightweight high-strength foam aluminum alloy plate civil air defense door manufactured by the manufacturing method includes a door frame and a civil air defense door leaf. The door frame is consistent with the structure of a traditional civil air defense door. The utility model particularly optimizes the structure of the civil air defense door leaf, specifically, the traditional steel frame plus steel skin structure is replaced by a foam aluminum door leaf structure.

[0085] In the present invention, specifically, the door leaf of the civil air defense door is mainly composed of a panel (the panel is a protective layer, specifically including an outer protective layer and an inner protective layer) and an intermediate foam aluminum structure layer. The intermediate foam aluminum structure layer is similar to the sponge material structure in the prior art (the difference is that the intermediate foam aluminum structure layer is made of metal aluminum as the base material by adding foaming additives). The panel structure on the outside of the door leaf of the civil air defense door needs to be fixed to the intermediate foam aluminum structure layer. Therefore, the present invention proposes the following optimized design to achieve reliable fixation of the door leaf panel and the intermediate foam aluminum structure layer filled inside. The optimized design is as follows: evenly distribute mounting holes on the entire intermediate foam aluminum structure layer, set dovetail groove structures at both ends of the mounting holes, accommodate dovetail blocks (the dovetail blocks are made of hard materials with slight elasticity) in the dovetail grooves, set the panels on both sides of the intermediate foam aluminum structure layer, and use bolts to pass through the dovetail blocks and mounting holes to achieve the fastening of the panel (outer protective layer and inner protective layer) and the intermediate foam aluminum structure layer.

[0086] Regarding the encapsulation of the side edges of the civil air defense door leaf, the utility model can extend the side edges of the door leaf panel outward relative to the middle foam aluminum structure layer and bend the edges inward to form a trough structure that can be loaded with encapsulation steel plates or encapsulation square steels. After the steel plates or square steels are loaded, the encapsulation of the side edges of the civil air defense door leaf is achieved.

[0087] In addition, the utility model also provides hole structures with different functions on the door leaf of the civil air defense door, that is, the door leaf is opened to install the handle or shaft of the door lock system. The utility model will embed the shaft hole structure after the door leaf of the civil air defense door is opened, and finally complete the installation of the door lock system. After the square steel for packaging is provided, the utility model can also provide edging on the side of the door leaf of the civil air defense door, and the edging can be fixedly connected with the square steel for packaging and the panel by welding.

[0088] Foamed aluminum is made by adding additives to pure aluminum or aluminum alloy and then undergoing a foaming process. It has both metal and bubble characteristics. Foamed aluminum materials have low density, strong impact absorption, high temperature resistance, strong fire resistance, corrosion resistance, sound insulation and noise reduction, low thermal conductivity, high electromagnetic shielding, strong weather resistance, filtering ability, easy processing, easy installation, high forming precision, and surface coating. Foamed aluminum materials have excellent physical and chemical properties, and also have the advantages of light weight and high specific stiffness. The structural characteristics of foamed aluminum materials are: large pore size and large specific surface area. Because foamed aluminum has excellent physical, chemical and mechanical properties and recyclability, these excellent properties of foamed aluminum give it broad application prospects in today's material field and are promising engineering materials, especially in the transportation industry, aerospace industry and building structure industry.

[0089] The structural features of the foam aluminum material used in the utility model are summarized as follows:

[0090] 1. Larger pore size: Aluminum foam has a closed-cell structure, and the pore diameter is generally 0.3-7mm.

[0091] 2. High and controllable porosity. In the present invention, the porosity can be controlled within 63%-90%.

[0092] 3. Large specific surface area, ranging from 10 to 45 cm2 / cm3.

[0093] 4. Diversified pore structures: closed pores, through pores and micro-through pores.

[0094] 5. The metal skeleton composition and pore structure are controllable, with a wide range of applications and can meet different needs.

[0095] The performance characteristics of the foam aluminum material used in this utility model are summarized as follows:

[0096] 1. Lightweight: The density is 0.1-0.4 times that of metallic aluminum.

[0097] 2. High specific stiffness: Its bending specific stiffness is 1.5 times that of steel.

[0098] 3. High damping performance and impact energy absorption rate: The damping performance is 5-10 times that of metal aluminum. When the porosity of 84% foam aluminum is 50% deformed, it can absorb more than 2.5MJ / m3 of energy.

[0099] 4. Good acoustic function: a. Sound insulation performance (closed cell): When the sound wave frequency is between 800-4000HZ, the sound insulation coefficient of closed-cell foam aluminum is above 0.9; b. Sound absorption performance (micro-through holes and through holes): When the sound wave frequency is between 125-4000HZ, the sound absorption coefficient of through-hole foam aluminum can reach up to 0.8, and its octave average sound absorption coefficient exceeds 0.4.

[0100] 5. Excellent electromagnetic shielding performance: When the electromagnetic wave frequency is between 2.6-18GHZ, the electromagnetic shielding performance of foam aluminum can reach 60-90dB.

[0101] 6. Good thermal properties: closed-cell foam with a porosity of 80-90% is equivalent to marble. Through-hole foam aluminum has good heat dissipation under forced convection conditions because its pores are interconnected.

[0102] 7. Non-flammable and has good heat resistance. □Good corrosion resistance and weather resistance, low moisture absorption, no aging, and non-toxic.

[0103] 8. Easy to process: convenient for cutting, drilling and gluing; can be bent into the required shape by molding; can be surface treated with organic or inorganic paint; can be covered on both sides to form large-sized lightweight, high-rigidity panels.

[0104] 9. Easy to install: Foam aluminum materials can be installed at high places without mechanical lifting equipment, such as ceilings, walls and roofs. They can be connected and fixed mechanically or directly with screws, or they can be glued to the wall or ceiling with adhesives.

[0105] 10. The "sandwich" structure formed by metal sheet - foamed aluminum - metal sheet inherits the excellent properties of foamed aluminum and has high bending strength. It can be used as new building materials, high-rigidity structural parts for locomotives and vehicles, etc.

[0106] 11. Multifunctional compatibility of the above performances.

[0107] In the utility model, the foam aluminum material adopts a "sandwich" structure (outer protective layer, foam aluminum structural layer, inner protective layer), which has the characteristics of light weight and high rigidity, and can be used as an excellent structural material. Compared with conventional metal materials (such as steel materials used in traditional civil air defense doors), the use of foam aluminum materials can reduce the weight of components by more than half, and the rigidity can be increased by nearly 10 times. In addition, foam aluminum also has excellent electromagnetic shielding properties, and can be used for electromagnetic shielding of telecommunications, electronic instruments, computer rooms, and television broadcasting equipment, and can prevent the electric pulse effect EMP caused by nuclear radiation (this effect can burn semiconductors or cause electronic chaos due to data transmission losses, and ultimately destroy electronic equipment). Foam aluminum is also a high-quality thermal insulation material with low thermal conductivity. It also has the advantages of light weight, high specific rigidity, and non-combustibility. It can be used as heat insulation, heat preservation, and cold preservation materials. In addition, foam aluminum is also an impact energy absorbing material with excellent impact energy absorption performance. It can be used as automobile anti-collision guards, protective shells of mechanical devices, safety pads for elevators, interlayers of aircraft shells (to buffer explosion shock waves) and protective layers of spacecraft (to capture space debris), etc.

[0108] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lightweight and high-strength foam aluminum alloy plate civil air defense door, characterized in that: It comprises a door leaf of a man-air defense door and a door frame of the man-air defense door, wherein the door leaf is hinged to the door frame; The lightweight high-strength foam aluminum alloy plate civil air defense door includes a protective layer, the protective layer includes an outer protective layer and an inner protective layer, and an intermediate foam aluminum structural layer is arranged between the outer protective layer and the inner protective layer; A mounting hole is provided on the middle foam aluminum structure layer, the outer protective layer and the inner protective layer are respectively provided on both sides of the middle foam aluminum structure layer, and bolts are passed through the mounting hole to fasten the outer protective layer and the inner protective layer to the middle foam aluminum structure layer.

2. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 1 is characterized in that: The civil air defense door leaf (1) comprises two aluminum alloy thin plates or stainless steel thin plates, and foamed aluminum material is filled between the aluminum alloy thin plates or stainless steel thin plates to form a sandwich structure; The civil air defense door frame (3) is made of L-shaped steel profile; The door leaf of the civil air defense door is installed on the door frame of the civil air defense door via at least two sets of hinge assemblies (4).

3. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 1 is characterized in that: Also includes a sealing structure (5); A sealing structure is arranged on a side of the civil defense door frame used to abut against the civil defense door leaf, wherein the sealing structure includes a flat block structure and an oblique block structure. The flat block structure is welded and fixed perpendicularly to the outer side surface of the civil defense door frame, and the oblique block structure is inclined and welded relative to the outer side surface of the civil defense door frame. The flat block structure and the oblique block structure form a closing structure, and a sealing strip is assembled between the flat block structure and the oblique block structure. The opening formed between the flat block structure and the oblique block structure can be used for the civil defense door leaf to abut against the sealing strip after closing.

4. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 1 is characterized in that: The side edges of the civil air defense door leaf are folded to form an edge, and the folded steel plate is cut according to the edge length of the civil air defense door leaf to form an edge section (6), and the two ends of the edge section are cut at a 45° angle to connect the top edge edge and the side edge edge of the civil air defense door leaf.

5. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 2 is characterized in that: The hinge assembly includes a first base plate and a second base plate. Two first card plates arranged at intervals are vertically fixed on the first base plate to form a door frame hinge part. A second card plate is vertically fixed on the second base plate to form a door leaf hinge part. The door frame hinge part is fixed to the door frame of the civil air defense door with multiple sets of bolts. The door leaf hinge part is fixed to the door leaf of the civil air defense door with multiple sets of bolts. The second card plate is inserted between the two first card plates. A bearing is arranged on the lower side of the second card plate and between the second card plate and the first card plate. An adjustment block is arranged on the upper side of the second card plate and between the second card plate and the first card plate.

6. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 5 is characterized in that: An adjustment long hole is provided on the first clamping plate, and the length direction of the adjustment long hole is perpendicular to the first substrate. A mounting circular hole is provided on the second clamping plate. Bolts for assembling the door frame hinge part and the door leaf hinge part are provided through the first clamping plate and the second clamping plate, and the door leaf hinge part can be adjusted in position relative to the door frame hinge part through the adjustment long hole, so as to provide an avoidance space for the rotation of the civil air defense door leaf when the civil air defense door leaf is opened.

7. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 1 is characterized in that: The holes opened on the original plate for making the door leaf are all provided with a circular hole sealing edge structure (7); It also includes a door lock system and a hinge assembly. When installing the hinge assembly and the door lock system, all rotating parts are scrubbed clean and oiled, and regular maintenance is performed during later use.

8. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 1 is characterized in that: The outer side of the civil air defense door leaf is provided with an artistic coating or an artistic logo according to the customer's artistic requirements.

9. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 1, characterized in that: After the door leaves of the civil air defense door are assembled and welded, the inner surface of the door leaves and the periphery of the door leaves are smoothed, and the flatness is <2.

10. The lightweight and high-strength foam aluminum alloy plate civil air defense door according to claim 7, characterized in that: The door lock system adopts a linkage locking mechanism, which is connected to the inner thread of the civil air defense door leaf through a thread and coated with a thread fastener, and grease is applied to the surface of the active friction parts of the door lock system, and gaskets and / or washers can be set at the installation location of the shaft components of the door lock system to adjust the gap.

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