A soft-hard composite protection structure with entangled wire material as the anti-impact and energy-dissipating medium

Abstract

The present invention relates to the technical field of protective equipment, and in particular to a soft-hard composite protective structure using entangled metal wire material as an anti-impact and energy-consuming medium, including a protective structure body. The protective structure body includes an outer layer of entangled metal wire material, a middle layer of entangled metal wire material, and an inner layer of entangled metal wire material arranged in sequence. Entangled metal wire layer fixing structures are provided between the outer layer of entangled metal wire material and the middle layer of entangled metal wire material, and between the middle layer of entangled metal wire material and the inner layer of entangled metal wire material. A circumferential fixing structure is provided on the outside of the protective structure body, and a packaging shell is provided on the outside of the circumferential fixing structure. The present invention plays an important role in reducing armor damage and improving anti-penetration ability.

Description

Technical Field

[0001] The present invention relates to the technical field of protective equipment, and in particular to a soft-hard composite protective structure using entangled metal wire material as an anti-impact and energy-dissipating medium. Background Art

[0002] The strategic requirements of mobile operations and three-dimensional offensive and defensive operations have put forward higher requirements for the mobility and protection capabilities of military equipment. Under the conditions of modern warfare, the rapid deployment and strategic transfer capabilities of armored vehicles are particularly important, and the mobility is facing a severe test. However, while having strong mobility, the importance of protection capabilities cannot be ignored. In modern warfare, the killing capabilities of ammunition and fragments are constantly increasing, and it is urgent to improve the protection capabilities of armored vehicles. Considering the above situations, it is required that armored vehicles have both good mobility and strong protection performance.

[0003] Based on traditional protective structures and materials, to improve the protection capabilities, it is necessary to increase their thickness. However, the increase in thickness will lead to an increase in mass, which does not meet the requirements of lightweight development. New materials are the material basis for the development of high-performance armor, and new structural designs are important means to improve the protection capabilities of armor. The effective combination of the two becomes an important method to improve the protection performance of armor.

[0004] The anti-ballistic mechanisms of traditional protective materials, such as ceramics, metal alloys, and fiber composite materials, etc., all absorb energy through their own deformation and damage, resulting in serious damage to the armor structure and being unfavorable for resisting multiple strikes. As a structural material, metal rubber material has good energy absorption and shock damping performance and can greatly dissipate impact energy. Using metal rubber material in the armor structure can reduce the overall damage degree of the structure and has good application prospects in anti-ballistic. The metal rubber material is soft. Although it plays an important role in reducing the damage degree of the armor, its effect on improving the anti-penetration ability of the armor is not obvious. Summary of the Invention

[0005] The purpose of the present invention is to provide a soft-hard composite protective structure using entangled metal wire material as an anti-impact and energy-dissipating medium. By designing the structure of metal rubber, multi-dimensional constraints are achieved, which play important roles in reducing armor damage and improving anti-penetration ability.

[0006] The present invention provides a soft-hard composite protection structure with entangled wire material as the impact-resistant energy dissipation medium, including a protection structure body. The protection structure body includes an outer layer of entangled wire material, a middle layer of entangled wire material, and an inner layer of entangled wire material arranged in sequence. Entangled wire layer fixing structures are provided between the outer layer of entangled wire material and the middle layer of entangled wire material, and between the middle layer of entangled wire material and the inner layer of entangled wire material. A circumferential fixing structure is provided on the outside of the protection structure body, and a packaging shell is provided on the outside of the circumferential fixing structure.

[0007] Preferably, the outer layer of entangled wire material is formed by splicing four pentahedral entangled wire materials with their bottoms facing up.

[0008] Preferably, the bottoms of the four pentahedral entangled wire materials are on the same horizontal plane and are spliced into a cross shape.

[0009] Preferably, the inner layer of entangled wire material is formed by splicing nine pentahedral entangled wire materials with their bottoms facing down.

[0010] Preferably, the bottoms of the nine pentahedral entangled wire materials are on the same horizontal plane and are arranged in a three-horizontal and three-vertical pattern.

[0011] Preferably, the bottoms of the pentahedral entangled wire materials are all square.

[0012] Preferably, the middle layer of entangled wire material is formed by splicing 12 tetrahedral entangled wire materials, and the tetrahedral entangled wire materials are used to fill the gap between the outer layer of entangled wire material and the inner layer of entangled wire material. Specifically, the above-mentioned wire-wound material is made of 304 austenitic stainless steel wire through weaving, winding, and stamping.

[0013] Preferably, the entangled wire layer fixing structure is a metal plate at the gap of the splicing contact surface between the outer layer of entangled wire material and the middle layer of entangled wire material, and between the middle layer of entangled wire material and the inner layer of entangled wire material. Specifically, the metal plate is made of aluminum alloy.

[0014] Preferably, the circumferential fixing structure is filled with four aluminum alloy blocks around to form a regular cuboid.

[0015] Preferably, the packaging shell is provided on the six faces of the protection structure body, and four surrounding faces are provided with threaded holes for fixing the internal structure. The packaging shell is made of titanium alloy.

[0016] Advantageous effects:

[0017] The encapsulation shell is made of titanium alloy, the internal wire winding material is stainless steel, and the interlayer fixing structure is aluminum alloy. The three materials form a composite structure in terms of structure. When subjected to impact, stress waves or projectiles undergo multiple reflections and transmissions between different materials, consuming a large amount of energy to achieve the purpose of impact resistance. This mechanism is equivalent to the anti-penetration mechanism of composite armor.

[0018] Adopting a splicing structure of multiple entanglement wire materials with different shapes can effectively disperse the impact energy received, so that the impact energy is not particularly concentrated. In addition, adding a titanium alloy encapsulation structure outside the internal structure can impose a constraint on the internal structure, reduce the deformation of the internal structure when subjected to impact, improve the protection performance, and also enhance the above-mentioned effect of dispersing impact energy. Brief Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a disassembled schematic diagram of the protection structure body in the present invention;

[0021] Figure 2 It is a disassembled schematic diagram of the bottom view of the protection structure body in the present invention;

[0022] Figure 3 It is a schematic diagram after the protection structure body in the present invention is spliced;

[0023] Figure 4 It is a schematic diagram of the positional relationship between the protection structure body and the circumferential fixing structure in the present invention;

[0024] Figure 5 It is a schematic diagram of the overall protection structure in the present invention.

[0025] Explanation of the reference numerals: 1 - protection structure body, 2 - outer layer of entanglement wire material, 3 - middle layer of entanglement wire material, 4 - inner layer of entanglement wire material, 5 - interlayer fixing structure of entanglement wire material, 6 - circumferential fixing structure, 7 - encapsulation shell, 8 - threaded hole. Detailed Embodiments

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Embodiment 1

[0030] A soft-hard composite protection structure with entangled metal wire material as the impact-resistant energy dissipation medium, as Figures 1-5 shown, includes a protection structure body 1. The protection structure body 1 includes an outer layer 2 of entangled metal wire material, a middle layer 3 of entangled metal wire material and an inner layer 4 of entangled metal wire material arranged in sequence. Entangled metal wire layer fixing structures 5 are provided between the outer layer 2 of entangled metal wire material and the middle layer 3 of entangled metal wire material and between the middle layer 3 of entangled metal wire material and the inner layer 4 of entangled metal wire material. A circumferential fixing structure 6 is provided on the outside of the protection structure body 1, and a packaging shell 7 is provided on the outside of the circumferential fixing structure 6.

[0031] Metal rubber (i.e., the entangled wire material mentioned in the present invention) is a homogeneous elastic porous material. It is formed by orderly arranging a certain mass of stretched and helical metal wires in a stamping (or rolling) die using a certain process method and then shaping it by cold stamping. Its raw material is metal wire, which not only has the inherent properties of the selected metal but also has elasticity like rubber, so it gets this name. In the present invention, the wire winding material is braided, wound, and stamped from 304 austenitic stainless steel wire with a wire diameter of 0.15 mm.

[0032] The outer layer 2 of the entangled wire material is composed of four pentahedron entangled wire materials with their bottoms facing up. The hypotenuse length of the outer layer 2 of the pentahedron wire winding material is 43.08 mm. The bottoms of the pentahedron entangled wire materials are all squares with a bottom side length of 42.3 mm. The bottoms of the four pentahedron entangled wire materials are in the same horizontal plane and are spliced into a cross shape.

[0033] The inner layer 4 of the entangled wire material is composed of nine pentahedron entangled wire materials with their bottoms facing down. The dimensions of the pentahedron entangled wire materials in the inner layer are the same as those of the outer layer of the pentahedron wire winding material mentioned above. The bottoms of the nine pentahedron entangled wire materials are in the same horizontal plane and are arranged in a three-horizontal and three-vertical pattern.

[0034] The middle layer 3 of the entangled wire material is composed of 12 tetrahedron entangled wire materials, which are used to fill the gap between the outer layer 2 and the inner layer 4 of the entangled wire material. One face of the tetrahedron wire winding material in the middle layer is an equilateral triangle with a side length of 42 mm, and all the remaining side lengths are 40.95 mm.

[0035] The interlayer fixing structure 5 of the entangled wire material is a metal plate at the gap of the splicing contact surfaces between the outer layer 2 and the middle layer 3 of the entangled wire material and between the middle layer 3 and the inner layer 4 of the entangled wire material. The metal plate is made of aluminum alloy with a thickness of 0.4 mm. Through the wave impedance mismatch effect of the wire winding material and the interlayer fixing structure 5, the anti-ballistic performance can be improved.

[0036] As Figure 4 shown, the circumferential fixing structure 6 is filled with four aluminum alloy blocks around, which are spliced by four aluminum alloys to form a regular cuboid to ensure uniform stress on the periphery during subsequent outer shell encapsulation.

[0037] The encapsulation structure 7 is made of titanium alloy, and the thread processing form is as Figure 5As shown, the thread arrangements on the opposite faces are the same, and the size of the internal hexagonal thread is M5X15. By encapsulating the internal structure, the energy absorption performance and anti-ballistic performance are further improved. The encapsulation shell is made of titanium alloy, and threaded holes are machined on the four surrounding faces. Bolts are used to connect the opposite threaded holes for fixing the internal structure. Note: For clear display, the encapsulation shell of the panel is not shown, and the titanium alloy shell is also encapsulated on the top directly above in the figure. The composite protection structure of the present invention is mainly used for the armored bulletproof structure on armored vehicles.

[0038] The anti-impact principle of the present invention is divided into two parts:

[0039] 1. The encapsulation shell is made of titanium alloy, the internal wire winding material is stainless steel, and the interlayer fixing structure is aluminum alloy. The three materials form a composite structure in terms of structure. When subjected to impact, stress waves or projectiles undergo multiple reflections and transmissions between different materials, consuming a large amount of energy to achieve the purpose of anti-impact. This mechanism is equivalent to the anti-penetration mechanism of composite armor.

[0040] 2. The splicing structure of multiple entangled wire materials with different shapes is adopted, which can effectively disperse the impact energy received, so that the impact energy is not particularly concentrated. In addition, a titanium alloy encapsulation structure is added outside the internal structure, which has a constraining effect on the internal structure, reduces the deformation of the internal structure when subjected to impact, improves the protection performance, and can also enhance the above-mentioned effect of dispersing impact energy.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soft-hard composite protection structure with entangled wire material as the anti-impact and energy-dissipating medium, characterized in that, It includes a protection structure body. The protection structure body includes an outer layer of intertwined metal wire material, a middle layer of intertwined metal wire material, and an inner layer of intertwined metal wire material arranged in sequence. The outer layer of intertwined metal wire material is formed by splicing four pentahedron intertwined metal wire materials with their bottoms facing upward. The inner layer of intertwined metal wire material is formed by splicing nine pentahedron intertwined metal wire materials with their bottoms facing downward. The middle layer of intertwined metal wire material is formed by splicing 12 tetrahedron intertwined metal wire materials. The tetrahedron intertwined metal wire materials are used to fill the gaps between the outer layer of intertwined metal wire material and the inner layer of intertwined metal wire material. There are intertwined metal wire layer fixing structures between the outer layer of intertwined metal wire material and the middle layer of intertwined metal wire material, and between the middle layer of intertwined metal wire material and the inner layer of intertwined metal wire material. There is a circumferential fixing structure on the outside of the protection structure body. The circumferential fixing structure is filled with four aluminum alloy blocks around to form a regular cuboid. There is a packaging shell on the outside of the circumferential fixing structure. The packaging shell is arranged on the six faces of the protection structure body, and there are threaded holes on the four surrounding faces for fixing the internal structure. The packaging shell is made of titanium alloy, the internal intertwined metal wire material is made of stainless steel, and the layer fixing structure is made of aluminum alloy.

2. The soft and hard composite protection structure using entangled metal wire material as the anti-impact energy dissipation medium according to claim 1, characterized in that, The bottoms of the four pentahedron intertwined metal wire materials are on the same horizontal plane and are spliced into a cross shape.

3. The soft-hard composite protection structure using entangled wire material as the anti-impact and energy-dissipating medium according to claim 1, characterized in that, The bottoms of the nine pentahedron intertwined metal wire materials are on the same horizontal plane and are arranged in a three-horizontal and three-vertical pattern.

4. The soft-hard composite protection structure with entangled metal wire material as the anti-impact and energy-dissipating medium according to claim 3, characterized in that, The bottoms of the pentahedron intertwined metal wire materials are all squares.

5. The soft-hard composite protection structure using entangled wire material as the anti-impact energy dissipation medium according to claim 1, characterized in that, The intertwined metal wire layer fixing structure is a metal plate at the gap of the splicing contact surfaces between the outer layer of intertwined metal wire material and the middle layer of intertwined metal wire material, and between the middle layer of intertwined metal wire material and the inner layer of intertwined metal wire material.

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