CN112197646B - Stealth anti-damage shielding shelter - Google Patents
Stealth anti-damage shielding shelter Download PDFInfo
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- CN112197646B CN112197646B CN202011082063.8A CN202011082063A CN112197646B CN 112197646 B CN112197646 B CN 112197646B CN 202011082063 A CN202011082063 A CN 202011082063A CN 112197646 B CN112197646 B CN 112197646B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H3/00—Camouflage, i.e. means or methods for concealment or disguise
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/02—Layer formed of wires, e.g. mesh
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
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Abstract
The invention belongs to the technical field of functional materials, and provides a stealth and anti-damage shielding shelter which comprises a shelter body, a bottom plate and a shelter door; the bottom plate is connected with the periphery of the bottom of the cabin body, and the bottom plate and the cabin body form a closed space structure; the cabin door is arranged on one surface of the cabin body and is used for people to enter and exit; the cabin body is an integrally formed structure which is enclosed by 4 side walls and 1 top plate; at least two of the 4 side walls of the cabin body are folded plates which comprise vertical surfaces and inclined surfaces; the inclined plane comprises a first inclined plane and a second inclined plane, one side of the first inclined plane is connected with the top plate, and an included angle between the first inclined plane and the top plate is 151 degrees; the second inclined plane is connected with the other side of the first inclined plane, an included angle between the second inclined plane and the first inclined plane is 145 degrees, the other side of the second inclined plane is connected with a vertical plane, and the vertical plane is connected with the bottom plate; the cabin body and the cabin door respectively comprise a stealth layer, an anti-damage layer, a heat insulation layer and an electromagnetic shielding layer.
Description
Technical Field
The invention belongs to the technical field of structural design, and particularly relates to a hidden survivability-resisting shielding shelter.
Background
The shelter is a transportable box-type workshop with certain protection capability, can provide a proper working environment for personnel and equipment, and is convenient for carrying in various modes. At present, shielding square cabins, stealth square cabins, bulletproof square cabins, explosion-proof square cabins and other types have been developed for square cabins.
The future shelter can be widely applied to military and civil aspects, and the future battlefield environment requires that the shelter has multiple functions of resisting electromagnetic interference and threat of electromagnetic weapons, preventing reconnaissance and discovery, resisting damage, preserving heat to improve personnel comfort and the like. The existing shelter mostly adopts a metal skin structure, even the shelter for the battlefield only has single functions of hiding, resisting damage and shielding or two functions, and the thickness of a shelter wall plate is thicker; the aluminum skin is adopted for shielding, so that the weight is heavy; the heat preservation performance is poor; electronic signals and heat generated by internal equipment are easy to detect and find various problems.
The future battlefield environment is complex, and the existing shelter with single function can not meet the requirement of the future battlefield environment. Therefore, there is a need for a shelter with multiple protective functions.
Disclosure of Invention
The invention aims to overcome the defects of single function, heavy weight and the like of a shelter in the prior art, and provides a hidden survivable shielding shelter, which combines a hidden layer, a survivable layer, a shielding layer and a heat-insulating layer into a shelter plate through reasonable configuration, so that the shelter can simultaneously meet the functions of hiding, survivability, shielding and heat insulation; on the aspect of specific function optimization, the overall stealth performance of the shelter is obviously improved by combining structural design with the use of stealth materials; the technical scheme of combining the carbon fiber, the permalloy and the metal copper net layer is adopted to replace the technical scheme of the aluminum skin in the prior art, so that the electromagnetic wave shielding function is realized, and the lightweight characteristic is achieved.
The technical scheme of the invention is that the hidden damage-resistant shielding shelter comprises a shelter body, a bottom plate and a shelter door; the bottom plate is arranged at the bottom of the cabin body and is connected with the periphery of the bottom of the cabin body, and the bottom plate and the cabin body form a closed space structure; the cabin door is arranged on one surface of the cabin body and is used for people to enter and exit; the cabin body is an integrally formed structure formed by four side walls and a top plate, and the top plate is parallel to the bottom plate; at least two of the four side walls of the cabin body are folded plates which comprise vertical surfaces and inclined surfaces; the inclined plane comprises a first inclined plane and a second inclined plane, one side of the first inclined plane is connected with the top plate, and an included angle between the first inclined plane and the top plate is 151 degrees; the second inclined plane is connected with the other side of the first inclined plane, and the included angle between the second inclined plane and the first inclined plane is 145 degrees; the other side of the second inclined plane is connected with a vertical plane of the side wall, and the bottom of the vertical plane is connected with the bottom plate; the cabin body and the cabin door respectively comprise structural plates which comprise a stealth material layer, an anti-damage material layer, a heat insulation material layer and an electromagnetic shielding layer.
According to the most frequently-detected angle and direction of the shelter, the top of the shelter is designed with a continuous chamfer (a folded plate structure in a side wall, the appearance of the shelter formed by combining two inclined surface designs and a top plate is equivalent to that of a connecting part of a right-angle side adjacent to the top of a conventional hexahedral shelter, after one angle is cut, the angle is changed again on the basis of the chamfer to carry out secondary cutting to form continuous variable-angle multi-surface connection), the area of a top plane is remarkably reduced (because the top plane is approximately vertical to the detection direction, a strong reflecting surface is formed), and the signal returning to the detection direction can be reduced by a connection mode of reducing the top plane and the obtuse angle of the top. Meanwhile, the stealth layer, the anti-damage layer, the heat insulation layer and the electromagnetic shielding layer are comprehensively used in the cabin body and the cabin door structure, so that the integration of stealth, anti-damage, heat insulation and shielding is realized.
Further, the cabin body and the cabin door structural plate sequentially comprise the following structures: the outer skin layer is positioned on the outer side of the stealth and anti-damage shielding shelter, and the electromagnetic shielding layer is positioned on the inner side of the stealth and anti-damage shielding shelter; the layers are bonded and cured through low-dielectric-constant resin.
The outer skin layer plays a role in supporting and bearing external load; the stealth layer is used for resisting reconnaissance threats from the outside; the anti-destruction layer resists attack threats from a striking direction; the heat insulation layer is used for maintaining the temperature inside the shelter; the electromagnetic shielding layer is used for preventing electromagnetic signals inside the shelter from leaking, and meanwhile, preventing external signals from entering the shelter to interfere with the operation of internal information equipment inside the shelter, because electromagnetic shielding and stealth are needed, an adhesive medium between the layers needs low dielectric constant so as to avoid incompatibility or form negative effects on stealth performance and electromagnetic shielding performance design, functional requirements and functional characteristics are taken into consideration in the design, and mutual consideration and functional enhancement are achieved.
Furthermore, the outer skin layer is a quartz fiber layer, and the stealth layer is a wave-absorbing foam layer formed by alternately attaching and stacking a foam layer and a frequency selection surface; the anti-damage layer is an ultra-high molecular weight polyethylene plate layer; the heat-insulating layer is a foam plate; the electromagnetic shielding layer is formed by sequentially overlapping a permalloy plate, a first carbon fiber layer, a copper net layer and a second carbon fiber layer and bonding, curing and connecting the permalloy plate, the first carbon fiber layer, the copper net layer and the second carbon fiber layer through low dielectric constant resin, wherein the second carbon fiber layer is located on the innermost side of the invisible survivability shielding shelter.
According to the invention, the outer skin layer is prepared by using the quartz fiber, so that the outer load can be borne; the stealth layer is used for absorbing radar waves and realizing radar stealth; the anti-damage layer is made of an ultra-high molecular weight polyethylene material and can play a role in resisting bullets; the foam board of the heat-insulating layer plays a role in heat insulation of the cabin body. The permalloy plate in the electromagnetic shielding layer mainly plays a role in shielding low-frequency electromagnetic waves, and the copper mesh layer plays a role in shielding medium-frequency and high-frequency electromagnetic waves; the carbon fiber layer has certain conductivity, can assist shielding, has high strength and high modulus characteristics simultaneously, is used for being paved on the outer part of the inner layer and the copper mesh layer, and can bear loads from the inside and the outside of the plate simultaneously.
Still further, the thickness of the outer skin layer is 0.4mm; the thickness of the stealth layer is 22.5mm; the thickness of the anti-damage layer is 16mm, and the thickness of the heat-insulating layer is 23.5mm; the thickness of the permalloy plate in the electromagnetic shielding layer is 0.1mm, the thickness of the first carbon fiber layer is 0.2mm, the thickness of the copper net layer is 0.1mm, and the thickness of the second carbon fiber layer is 0.4mm; the low dielectric constant resin comprises one of epoxy resin, vinyl ester resin and unsaturated polyester resin.
The layers are optimally designed according to the function requirements of the layers, the overall thickness is controlled to be 6-7cm, and compared with the traditional shelter plate with single or two functions, the shelter plate obviously reduces the weight and improves the multifunctional integration under the condition that the overall thickness is not increased or even reduced.
Still further, the bottom plate is a structure formed by a bottom plate electromagnetic shielding layer attached to the surface of the reinforcing frame and a bottom plate heat-insulating layer and a bottom plate outer skin layer sequentially filled in the reinforcing frame from one side close to the bottom plate electromagnetic shielding layer, wherein the bottom plate outer skin layer is positioned on the outer side of the stealth and damage-resistant shielding shelter, the bottom plate electromagnetic shielding layer is positioned on the inner side of the stealth and damage-resistant shielding shelter, and the bottom plate outer skin layer is bonded and cured with the bottom plate heat-insulating layer and the reinforcing frame and the bottom plate electromagnetic shielding layer through adhesive resin; the outer skin layer of the bottom plate is a glass fiber layer; the bottom plate heat-insulating layer is a foam plate; the electromagnetic shielding layer of the bottom plate is a layer formed by sequentially overlapping a permalloy plate, a first carbon fiber layer, a copper net layer and a second carbon fiber layer and bonding, curing and connecting the permalloy plate, the first carbon fiber layer, the copper net layer and the second carbon fiber layer through bonding resin; the total thickness of the bottom plate is the same as the plate thickness of the cabin body.
The bottom plate is because being used in cabin body lower part, need not compromise stealthy and survivability ability, but because play the supporting role, need increase strengthening frame with the reinforcing support dynamics, in addition can suitably increase the thickness of outer skin layer of bottom plate and bottom plate heat preservation in order to strengthen supporting and functions such as dampproofing low temperature of preventing, satisfy shielding needs with panel unanimous and electromagnetic shielding layer thickness at total thickness under, distribute in strengthening frame according to the design needs with the thickness on stealthy layer and the survivability layer in cabin body panel, in the outer skin layer of bottom plate and the bottom plate heat preservation of increase, the cost has both been practiced thrift, guarantee simultaneously and strengthened shelter efficiency.
Still further, the reinforcing frame is an aluminum profile reinforcing frame or a glass fiber reinforcing frame; the adhesive resin is epoxy resin.
Because the bottom plate needs to support cabin bodies, personnel, equipment and the like, the reinforcing frame plays a main supporting role, and meanwhile, the inner bottom plate outer skin layer, the bottom plate heat-insulating layer and the bottom plate electromagnetic shielding layer are protected from deformation or damage due to frequent local stress. The factors of cost, no need of stealth and the like are comprehensively considered, the outer skin layer of the bottom plate is a glass fiber layer, and the resin between the layers is epoxy resin.
Further, the cabin door is installed on the cabin body through a door hinge, and the cabin body is connected with the base plate through bolts uniformly distributed around the bottom of the cabin body and the periphery of the base plate; the connection part of the cabin body and the bottom plate adopts a lap joint mode to ensure the electrical continuity so that the whole square cabin forms a conductive electromagnetic shielding structure; the cabin body, the bottom plate and the cabin door are provided with a connecting piece embedded part and a line inlet and outlet reserved hole, and the connecting piece embedded part and the line inlet and outlet reserved hole are processed by a stealth material, a bulletproof material and an electromagnetic shielding material.
The electromagnetic shielding treatment of the connecting piece embedded part and the inlet and outlet wire preformed holes comprises the steps of using a shielding ring, a shielding sleeve, additionally arranging a shielding layer on the inlet and outlet wire, and the like; the stealth material treatment comprises the steps of reducing reflection of a strong reflection structure by stealth, even replacing a metal structural part by a wave-absorbing structure material and the like.
The invention also provides a processing technology of the stealth and anti-damage shielding shelter, which comprises a cabin body processing technology, a cabin door processing technology, a bottom plate processing technology and a connecting technology; firstly, respectively adopting a cabin body processing technology, a cabin door processing technology and a bottom plate processing technology to process the cabin body, the cabin door and the bottom plate, then adopting a connecting technology to connect the cabin door to the cabin body, and connecting the bottom of the cabin body with the bottom plate; the cabin body processing technology uses a cabin body mould comprising a left mould and a right mould, wherein the left mould and the right mould are two shells formed by symmetrically splitting along the height direction of a cabin body, and the left mould and the right mould are connected to form a cabin body model consistent with the appearance of the cabin body; the cabin processing technology comprises the following steps: s1, fixedly connecting a left mold and a right mold to form a cabin body mold, and sequentially carrying out outer skin layer, stealth layer, anti-damage layer, bulletproof layer and heat preservation layer laying on the inner surface of the cabin body mold; s2, reserving a hole matched with the cabin door on the layer when the step S1 is carried out, and spreading the layer in the step S1 to the periphery of the hole; s3, layering an electromagnetic shielding layer; s4, carrying out layer bonding and curing on the plurality of structural layers after layering; s5, removing the left die and the right die; the cabin door processing technology uses a plate die consistent with the size of the cabin door, and sequentially comprises the following steps: laying a stealth layer, an anti-damage layer and a heat insulation layer on a plate mould in sequence; installing a connecting piece with the cabin; layering electromagnetic shielding layers; after laying, carrying out layer bonding and curing on the plurality of structural layers; after the layers are laid in the cabin body processing technology and the cabin door processing technology, the multiple structural layers are subjected to layer bonding and curing by adopting a vacuum bonding and curing technology.
The left mold and the right mold are used for reducing the demolding difficulty, and meanwhile, the processes of firstly closing the molds and then integrally laying the layers are adopted, so that local strong radar reflection points and electromagnetic shielding leakage points caused by multiple connections are obviously reduced; in the functional material layer laying process, the electromagnetic shielding layer is arranged at the end and is arranged after various embedded parts and connecting parts (such as bolts between the cabin door and the bottom plate and hinge seats between the cabin door and the cabin body) are installed and fixed, so that the integral integrity of the electromagnetic shielding layer in the cabin body is ensured, and the electromagnetic shielding effect is ensured to the maximum extent.
Further, the processing technology of the bottom plate comprises the following steps: fixing a paved bottom plate electromagnetic shielding layer on the surface of one side of a reinforcing frame, wherein a permalloy plate of the bottom plate electromagnetic shielding layer is attached to the surface of the reinforcing frame, paving a filled bottom plate heat-insulating layer and a bottom plate outer skin layer in the reinforcing frame in sequence from one side of the permalloy plate close to the bottom plate electromagnetic shielding layer, and after paving is finished, adopting vacuum introduced adhesive resin to carry out bonding and curing; in the cabin body processing technology and the cabin door processing technology, a vacuum bag pressing curing technology is adopted for carrying out layer bonding curing on the laminated multilayer material: introducing low-dielectric-constant resin once under a vacuum condition, and then carrying out bonding curing under pressure; when the layer structure materials of the cabin body, the cabin door and the bottom plate are paved, redundant sizes of the electromagnetic shielding layers are reserved at the peripheral edges of the cabin body and the cabin door and the peripheral edges of the bottom plate electromagnetic shielding layers at the reinforced frame, so that the electromagnetic shielding layers of the cabin body and the internal corresponding layers of the bottom plate electromagnetic shielding layers are in staggered lap joint at the connecting parts of the cabin body and the bottom plate and the cabin door and the cabin body, and the electromagnetic shielding layers of the cabin door and the internal corresponding layers of the electromagnetic shielding layers of the cabin body are in staggered lap joint, thereby realizing better shielding lap joint.
Similarly, the electromagnetic shielding layer of the bottom plate is integrally covered on the reinforcing frame and the inner sides of the material layer and the embedded part filled in the reinforcing frame in the bottom plate, so that the integrity of the shielding surface is ensured to the maximum extent; the vacuum bag pressing process can ensure the impregnation uniformity of the resin among layers, the uniformity of the overall thickness of the layers and the curing effect. The staggered overlapping means that two parts to be connected adopt a mode of overlapping corresponding layers, namely, a permalloy plate of one part is overlapped and connected with a permalloy plate of the other part, and the connection mode of a first carbon fiber cloth layer, a copper mesh layer and a second carbon fiber cloth layer between the two parts is also the same as that of the permalloy plate.
Furthermore, the vacuum degree of the vacuum bag pressing is-101 MPa, and the reserved redundant sizes of the electromagnetic shielding layer and the bottom plate shielding material layer are as follows: the reserved redundant size of the permalloy plate is not less than 20mm, and the permalloy plates among the shelter components are connected in an alternating mode through spot welding by a spot welding machine; the reserved redundant size of the first carbon fiber cloth layer, the copper mesh layer and the second carbon fiber cloth layer is not smaller than 40mm, and the first carbon fiber cloth layer, the copper mesh layer and the second carbon fiber cloth layer are connected in an overlapping mode in an interactive connection mode among the shelter component parts.
Compared with the prior art, the invention has the advantages that:
1. has the functions of stealth, damage resistance, shielding and heat preservation.
2. According to the structural characteristics of the shelter, the radar reflection of the shelter in the main direction of reconnaissance is reduced through the structural design of the characteristic inclined plane, and the whole stealth performance of the shelter is obviously improved by combining with the use of stealth materials.
3. The technical scheme of combining the carbon fiber, the permalloy and the metal copper net layer is adopted to replace the technical scheme of the aluminum skin in the prior art, so that the electromagnetic wave shielding function is realized, and the lightweight advantage is achieved.
4. Through reasonable configuration, material selection optimization and thickness design of various functional layers such as supporting, hiding, anti-damage, heat preservation, shielding and the like, the shelter has more excellent and light mechanical properties such as impact resistance, rigidity, strength and the like.
Drawings
These and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a three-dimensional appearance structure of a stealth and anti-damage shielding shelter in embodiment 1 of the present invention;
fig. 2 is a schematic front view of a stealth and anti-damage shielding shelter in embodiment 1 of the present invention;
fig. 3 is a schematic layer structure diagram of cabin bodies and cabin door plates of a stealth and anti-damage shielding shelter in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a bottom plate material of a stealth and anti-damage shielding shelter in embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a cabin body mold used in a processing process of a stealth and anti-damage shielding shelter in embodiment 2 of the present invention;
fig. 6 is a schematic flow chart of a processing process of a stealth and survivability shielding shelter in embodiment 2 of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings and the detailed description of the invention.
Example 1
A hidden damage-resistant shielding shelter is shown in a schematic three-dimensional structure in figure 1 and comprises a shelter body 1, a bottom plate 2 and a shelter door 3; the bottom plate 2 is arranged at the bottom of the cabin body 1 and is connected with the periphery of the bottom of the cabin body 1, and the bottom plate and the cabin body form a closed space structure; the cabin door 3 is arranged on one surface of the cabin body 1 and is used for people to enter and exit; the cabin body 1 is an integrally formed structure formed by four side walls and 1 top plate, and the top plate is parallel to the bottom plate 2; the front view structure schematic diagram of the cabin body 1 is shown in fig. 2, at least two of four side walls of the cabin body (preferably two parallel side walls; the design can also be adopted on the tops of three or four side walls, but the design needs to take account of the height of the cabin door on the side wall on which the cabin door 3 is designed so as to reduce the processing difficulty of the cabin door 3) are folded plates, and the folded plates comprise vertical surfaces and inclined surfaces; the inclined planes comprise a first inclined plane 11 and a second inclined plane 12, one side of the first inclined plane 11 is connected with the top plate, and an included angle between the first inclined plane 11 and the top plate is 151 degrees; the second inclined plane 12 is connected with the other side of the first inclined plane 11, and the included angle between the second inclined plane 12 and the first inclined plane 11 is 145 degrees; the other side of the second inclined plane 12 is connected with the vertical plane of the side wall, and the bottom of the vertical plane is connected with the bottom plate 2; the structural plates of the cabin body 1 and the cabin door 3 respectively comprise a stealth layer, an anti-damage layer, a heat insulation layer and an electromagnetic shielding layer.
The layer structure of the structural plates of the cabin body 1 and the cabin door 3 is schematically shown in figure 3: the structure sequentially comprises the following structures: the outer skin layer C1 is positioned on the outer side of the stealth anti-damage shielding shelter, and the electromagnetic shielding layer C5 is positioned on the inner side of the stealth anti-damage shielding shelter; the layers are bonded, cured and connected through low-dielectric-constant resin; among them, further preferred is a design: the outer skin layer C1 is a quartz fiber layer, and the stealth layer C2 is a wave-absorbing foam layer formed by alternately attaching and stacking a foam layer and a frequency selection surface; the anti-damage layer C3 is an ultra-high molecular weight polyethylene plate layer; the heat-insulating layer C4 is a foam plate; the electromagnetic shielding layer C5 is formed by sequentially overlapping a permalloy plate C51, a first carbon fiber layer C52, a copper mesh layer C53 and a second carbon fiber layer C54 and bonding, curing and connecting the permalloy plate, the first carbon fiber layer C52, the copper mesh layer C53 and the second carbon fiber layer C54 through low dielectric constant resin, wherein the second carbon fiber layer C54 is positioned on the innermost side of the invisible survivability shielding shelter; the thickness of the outer skin layer C1 is 0.4mm in order to ensure the efficiency of each functional layer and take the parameters of weight, thickness and the like into consideration; the thickness of the stealth layer C2 is 22.5mm; the thickness of the anti-destruction layer C3 is 16mm, and the thickness of the heat insulation layer C4 is 23.5mm; the thickness of the permalloy plate C51 in the electromagnetic shielding layer C5 is 0.1mm, the thickness of the first carbon fiber layer C52 is 0.2mm, the thickness of the copper mesh layer C53 is 0.1mm, and the thickness of the second carbon fiber layer C54 is 0.4mm; the low dielectric constant resin comprises one of epoxy resin, vinyl ester resin and unsaturated polyester resin.
The details of some of the shelter are preferably designed as follows: the cabin door 3 is arranged on the cabin body 1 through a door hinge, and the cabin body 1 is connected with the bottom plate 2 through bolts uniformly distributed around the bottom of the cabin body and the periphery of the bottom plate; the layer structures of the connection part of the cabin body 1 and the bottom plate 2 adopt a lap joint mode, the cabin body 1 and the cabin door 3 adopt an electromagnetic shielding layer and adopt a mutual overlapping mode of corresponding layers, and the electric continuity is ensured so that the whole shelter forms a conductive electromagnetic shielding structure; as is well known to those skilled in the art, the cabin 1, the floor 2 and the cabin door 3 are provided with connecting members and embedded members (such as floor embedded members D5 shown in fig. 4) and access line reserved holes, and the embedded members and the access line reserved holes are treated by stealth materials, bulletproof materials and electromagnetic shielding materials.
Example 2
The processing technology of the stealth and anti-damage shielding shelter in the embodiment 1 has the flow schematic shown in fig. 6: the method comprises a cabin body 1 processing technology, a cabin door 3 processing technology (wherein the cabin door 3 processing technology is basically the same as the cabin body 1, but the difference is that the mold of the cabin body 1 is replaced by a substrate), a bottom plate 2 processing technology and a connecting technology; firstly, respectively adopting a cabin body 1 processing technology, a cabin door 3 processing technology and a bottom plate 2 to process the cabin body 1, the cabin door 3 and the bottom plate 2, then adopting a connecting technology to connect the cabin door 3 to the cabin body 1, and connecting the bottom of the cabin body 1 with the bottom plate 2.
The cabin body 1 processing technology uses a cabin body mould which comprises a left mould M1 and a right mould M2 and is shown in figure 5, the left mould M1 and the right mould M2 are two shells formed by symmetrically splitting along the height direction of the cabin body 1, and the two shells are connected to form a cabin body model with the same shape as the cabin body 1; and flange edges are arranged on the connecting surfaces of the left die M1 and the right die M2 and are used for sealing and sealing surfaces when vacuum bags are pressed.
The processing technology of the cabin body 1 comprises the following steps: s1, fixedly connecting a left mold M1 and a right mold M2 to form a cabin body mold, and sequentially arranging an outer skin layer, a stealth layer, an anti-damage layer, a bulletproof layer and a heat preservation layer on the inner surface of the cabin body mold; s2, reserving a hole matched with the cabin door 3 on the laying layer while performing the step S1, wherein the laying layer in the step S1 is arranged on the periphery of the hole; s3, layering an electromagnetic shielding layer; s4, carrying out layer bonding and curing on the plurality of structural layers after layering; s5, removing the left mold M1 and the right mold M2;
the cabin door 3 processing technology adopts a plate die with the same size as the cabin door 3, and the technology sequentially comprises the following steps: laying an outer skin layer, a stealth layer, a bulletproof layer and a heat insulation layer on a plate mould in sequence; mounting a hatch connector, such as a hinge mount; and (5) layering the electromagnetic shielding layer, and carrying out layer bonding and curing on the layered multi-layer material.
And after the layers are laminated in the cabin body 1 processing technology and the cabin door 3 processing technology, the layers of the multilayer materials are bonded and cured by adopting a vacuum bonding and curing technology.
The processing technology of the bottom plate 2 comprises the following steps: fixing a paved bottom plate electromagnetic shielding layer D4 on the surface of one side of a reinforced frame D1, wherein a permalloy plate of the bottom plate electromagnetic shielding layer D4 is attached to the surface of the reinforced frame D1, paving a filled bottom plate heat-insulating layer D3 and a bottom plate outer skin layer D2 in the reinforced frame D1 in sequence from one side of the permalloy plate close to the bottom plate electromagnetic shielding layer D4, installing a bottom plate embedded part D5 in the reinforced frame D1, and conducting bonding and curing by adopting vacuum introduction bonding resin after paving.
The optimized design is as follows: in the cabin body 1 processing technology and the cabin door 3 processing technology, the multi-layer material after being layered is subjected to layer bonding and curing by adopting a vacuum bag pressure curing technology: introducing low-dielectric-constant resin once under a vacuum condition, and then carrying out bonding curing under pressure; when the layer structure materials of the cabin body 1, the cabin door 3 and the bottom plate 2 are paved, the electromagnetic shielding layer C5 is reserved at the peripheral edges of the cabin body 1 and the cabin door 3, and the bottom plate electromagnetic shielding layer D4 is reserved at the peripheral edges of the reinforcing frame, so that the electromagnetic shielding layer C5 of the cabin body and the internal corresponding layer of the bottom plate electromagnetic shielding layer D4 are in staggered lap joint at the connecting part of the cabin body 1, the bottom plate 2 and the cabin door 3 and the cabin body 1, and the electromagnetic shielding layer C5 of the cabin door and the internal corresponding layer of the electromagnetic shielding layer C5 of the cabin body are in staggered lap joint, so that better shielding lap joint is realized. In order to achieve both the efficiency and the curing effect, the design is preferably as follows: the vacuum degree of vacuum bag pressing is-101 MPa; the redundant sizes of the electromagnetic shielding layer and the bottom plate shielding material layer are reserved as follows: the reserved redundant size of the permalloy plate is not less than 20mm, and the permalloy plates among the shelter components are connected in an alternating mode through spot welding by a spot welding machine; the reserved redundant sizes of the first carbon fiber cloth layer, the copper mesh layer and the second carbon fiber cloth layer are not smaller than 40mm, and the first carbon fiber cloth layer, the copper mesh layer and the second carbon fiber cloth layer among the shelter component parts are connected in an interactive overlapping mode.
The shielding performance index of the shelter is-40 dB; stealth performance index: the radar stealth function is provided, the average values of Ka and Ku waveband reflectivities are-17dB, the average values of X and C waveband reflectivities are-13dB, and the average values of S and L waveband reflectivities are-8 dB; the anti-destruction index is as follows: a 7.62mm ball shot fired by a small arms shot with a shrapnel with a landing velocity of 600m/s and a mass of 40g cannot vertically puncture the shelter. Is about 25% lighter than the prior art shelter.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. A preparation method of a stealth and anti-damage shielding shelter is characterized by comprising a shelter body (1), a bottom plate (2) and a shelter door (3);
the bottom plate (2) is arranged at the bottom of the cabin body (1) and is connected with the periphery of the bottom of the cabin body (1) to form a closed space structure;
the cabin door (3) is arranged on one surface of the cabin body (1) and is used for people to enter and exit;
the cabin body (1) is an integrally formed structure formed by 4 side walls and 1 top plate in a surrounding mode, and the top plate is parallel to the bottom plate (2);
at least two of the 4 side walls of the cabin body (1) are folded plates which comprise vertical surfaces and inclined surfaces; the inclined plane comprises a first inclined plane (11) and a second inclined plane (12), one side of the first inclined plane (11) is connected with the top plate, and an included angle formed between the first inclined plane and the top plate is 151 degrees; the second inclined plane (12) is connected with the other side of the first inclined plane (11) and forms an included angle of 145 degrees with the first inclined plane (11); the other side of the second inclined plane (12) is connected with a vertical plane of the side wall, and the bottom of the vertical plane is connected with the bottom plate (2);
the structural plates of the cabin body (1) and the cabin door (3) respectively comprise a stealth layer, an anti-damage layer, a heat insulation layer and an electromagnetic shielding layer;
the structural plates of the cabin body (1) and the cabin door (3) sequentially comprise the following layer structures: the shielding shelter comprises an outer skin layer (C1), a stealth layer (C2), an anti-damage layer (C3), a heat preservation layer (C4) and an electromagnetic shielding layer (C5), wherein the outer skin layer (C1) is positioned on the outer side of the stealth anti-damage shielding shelter, and the electromagnetic shielding layer (C5) is positioned on the inner side of the stealth anti-damage shielding shelter; the outer skin layer (C1), the stealth layer (C2), the anti-damage layer (C3), the heat-insulating layer (C4) and the electromagnetic shielding layer (C5) are bonded, cured and connected through low-dielectric-constant resin;
the outer skin layer (C1) is a quartz fiber layer, and the stealth layer (C2) is a wave-absorbing foam layer formed by alternately attaching and stacking a foam layer and a frequency selection surface; the damage-resistant layer (C3) is an ultra-high molecular weight polyethylene plate layer; the heat-insulating layer (C4) is a foam board; the electromagnetic shielding layer (C5) is a permalloy plate (C51), a first carbon fiber layer (C52), a copper mesh layer (C53) and a second carbon fiber layer (C54) which are sequentially overlapped and bonded and cured by low-dielectric-constant resin to form a layer, wherein the second carbon fiber layer (C54) is positioned at the innermost side of the stealth and anti-damage shielding shelter;
the thickness of the outer skin layer (C1) is 0.4mm; the thickness of the stealth layer (C2) is 22.5mm; the thickness of the anti-damage layer (C3) is 16mm, and the thickness of the heat-insulating layer (C4) is 23.5mm; the thickness of the permalloy plate (C51) in the electromagnetic shielding layer (C5) is 0.1mm, the thickness of the first carbon fiber layer (C52) is 0.2mm, the thickness of the copper mesh layer (C53) is 0.1mm, and the thickness of the second carbon fiber layer (C54) is 0.4mm; the low dielectric constant resin comprises one of epoxy resin, vinyl ester resin and unsaturated polyester resin;
the bottom plate (2) comprises a reinforcing frame (D1) and a bottom plate electromagnetic shielding layer (D4) attached to the surface of the reinforcing frame (D1), the reinforcing frame (D1) close to one side of the bottom plate electromagnetic shielding layer (D4) is filled with a bottom plate heat-insulating layer (D3), the other side of the bottom plate heat-insulating layer (D3) is attached to a bottom plate outer skin layer (D2), the bottom plate outer skin layer (D2) is located on the outer side of the stealth anti-damage shielding shelter, the bottom plate electromagnetic shielding layer (D4) is located on the inner side of the stealth anti-damage shielding shelter, the bottom plate outer skin layer (D2) is connected with the bottom plate heat-insulating layer (D3), and the surface of the reinforcing frame (D1) is bonded with the bottom plate electromagnetic shielding layer (D4) through adhesive resin and is connected in a curing mode;
the bottom plate outer skin layer (D2) is a glass fiber layer; the bottom plate heat-insulating layer (D3) is a foam plate; the bottom plate electromagnetic shielding layer (D4) is a layer formed by sequentially overlapping a permalloy plate, a first carbon fiber layer, a copper net layer and a second carbon fiber layer and bonding, curing and connecting the permalloy plate, the first carbon fiber layer, the copper net layer and the second carbon fiber layer through bonding resin;
the total thickness of the bottom plate (2) is the same as the plate thickness of the cabin body (1);
the reinforced frame (D1) is an aluminum profile reinforced frame or a glass fiber reinforced frame; the adhesive resin is epoxy resin;
the cabin door (3) is installed on the cabin body (1) through a door hinge, and the cabin body (1) is connected with the base plate (2) through bolts uniformly distributed around the bottom of the cabin body and the periphery of the base plate;
the joints of the cabin door (3) and the cabin body (1) and the bottom plate (2) are connected in a lap joint mode to ensure the electrical continuity;
the cabin body (1), the bottom plate (2) and the cabin door (3) are provided with embedded connecting piece parts and preformed holes for incoming and outgoing lines;
the processing technology comprises a cabin body (1) processing technology, a cabin door (3) processing technology, a bottom plate (2) processing technology and a connecting technology; firstly, preparing a cabin body (1), a cabin door (3) and a bottom plate (2) by respectively adopting a cabin body (1) processing technology, a cabin door (3) processing technology and a bottom plate (2) processing technology, then connecting the cabin door (3) to the cabin body (1) by adopting a connection technology, and connecting the bottom of the cabin body (1) with the bottom plate (2);
the cabin body (1) processing technology uses a cabin body mold comprising a left mold (M1) and a right mold (M2), the left mold (M1) and the right mold (M2) are two shells symmetrically split along the height direction of the cabin body (1), and the two shells are connected to form the cabin body mold with the same shape as the cabin body (1);
the cabin body (1) processing technology comprises the following steps:
s1, fixedly connecting a left mold (M1) and a right mold (M2) to form a cabin body mold, and sequentially carrying out outer skin layer, stealth layer, anti-damage layer and heat preservation layer laying on the inner surface of the cabin body mold;
s2, reserving holes matched with the cabin door (3) on the layer of the cabin body mould while the step S1 is carried out, and spreading the layer of the step S1 to the periphery of the holes;
s3, layering an electromagnetic shielding layer;
s4, carrying out layer bonding and curing on the plurality of structural layers after layering;
s5, removing the left die (M1) and the right die (M2);
the processing technology of the cabin door (3) uses a plate die with the same size as the cabin door, and the specific processing steps sequentially comprise: laying a stealth layer, an anti-damage layer and a heat insulation layer on a plate mould in sequence; layering electromagnetic shielding layers; after laying, carrying out layer bonding and curing on the plurality of structural layers;
after the layers are laid in the cabin body (1) processing technology and the cabin door (3) processing technology, the multiple structural layers are subjected to layer bonding and curing by adopting a vacuum bonding and curing technology;
the machining process of the bottom plate (2) comprises the following steps: firstly, fixing a paved bottom plate electromagnetic shielding layer (D4) on the surface of one side of a reinforced frame (D1), wherein a permalloy plate of the bottom plate electromagnetic shielding layer (D4) is attached to the surface of the reinforced frame (D1); sequentially laying a filled bottom plate heat-insulating layer (D3) and a bottom plate outer skin layer (D2) in the reinforcing frame (D1) from one side of the permalloy plate close to the bottom plate electromagnetic shielding layer (D4), and after laying is finished, adopting vacuum to introduce bonding resin for bonding and curing;
in the cabin body (1) processing technology and the cabin door (3) processing technology, a plurality of structural layers after being paved are subjected to layer bonding and curing, and a vacuum bag pressing and curing technology is adopted: introducing resin once under a vacuum condition, and then carrying out bonding and curing under a vacuum pressure;
when the layer structures of the cabin body (1), the cabin door (3) and the bottom plate (2) are paved, the electromagnetic shielding layer (C5) reserves redundant sizes at the bottom edge of the cabin body, the peripheral edge of the hole and the peripheral edge of the cabin door (3); the bottom plate electromagnetic shielding layer (D4) reserves redundant sizes at the peripheral edge of the reinforcing frame, so that the electromagnetic shielding layer (C5) of the cabin body is in staggered lap joint with the inner corresponding layer of the bottom plate electromagnetic shielding layer (D4) and the electromagnetic shielding layer (C5) of the cabin door is in staggered lap joint with the inner corresponding layer of the electromagnetic shielding layer (C5) of the cabin body at the connecting parts of the cabin body (1), the bottom plate (2), the cabin door (3) and the cabin body (1), and the electrical connection is realized;
the vacuum degree of the vacuum bag pressing is-101 MPa;
the redundant sizes of the electromagnetic shielding layer and the bottom plate electromagnetic shielding layer are reserved as follows: the reserved redundant size of the permalloy plates is not less than 20mm, and the permalloy plates between the cabin body and the connecting parts of the bottom plate and the cabin body and the cabin door are connected in an alternating spot welding mode through a spot welding machine; the reserved redundant sizes of the first carbon fiber cloth layer, the copper net layer and the second carbon fiber cloth layer are not smaller than 40mm, and the bottom of the cabin body is connected with the bottom plate connecting part, and the first carbon fiber cloth layer, the copper net layer and the second carbon fiber cloth layer of the cabin body and the cabin door connecting part in a corresponding layer interactive overlapping mode.
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| CN112762767A (en) * | 2021-01-15 | 2021-05-07 | 宁波曙翔新材料股份有限公司 | Open-close type stealth protection device and ground station stealth protection device |
| CN113619693B (en) * | 2021-09-14 | 2022-06-28 | 北京航空航天大学 | Stealth bulletproof composite material, forming method thereof and vehicle cockpit |
| CN114919265A (en) * | 2022-05-05 | 2022-08-19 | 北京卫星制造厂有限公司 | Light composite material for efficiently shielding low-frequency magnetic field |
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