CN214039737U - Protective armor with special-shaped hole structure - Google Patents

Abstract

The utility model discloses a heterotypic pore structure protection armor, including the armor base plate to and a plurality of heterotypic hole of seting up on the armor base plate. The special-shaped holes mainly comprise tapered holes, stepped holes and other combined special-shaped holes, and the opening directions of the special-shaped holes face to the bullet-facing surface. The difference between the special-shaped hole and the traditional hole structure armor columnar hole is that the diameter of the continuous change is beneficial to preventing the projectile body from directly penetrating through the center of the hole and guiding the projectile body. The stepped holes also provide a large number of high strength edges in the thickness direction, increasing the probability of the projectile experiencing unbalanced forces. In addition, the high-strength armor base plate can be optimally designed into a corrugated plate, and due to the obvious inclination angle, the projectile body can yaw more easily in the impact process; the composite plate can be optimally designed into a composite plate, and armor materials with different mechanical properties can be freely combined to meet the actual requirements of different projects.

Description

Protective armor with special-shaped hole structure

Technical Field

The utility model belongs to the technical field of shellproof, concretely relates to heterotypic pore structure protection armor is applicable to armoured vehicle protection.

Background

With the increasing level of technology of modern weaponry, the competition between armor protection equipment and anti-armor weaponry is becoming more and more intense. Among them, good maneuverability and high protection capability are the targets continuously pursued in the field of armored vehicles protection research. The hole structure armor is used as a novel armored vehicle additional armor which is proposed in recent ten years and is gradually applied, and has the dual advantages of high maneuverability and high protection capability.

The hole structure armor is generally made of high-strength steel and is characterized in that a large number of through holes are uniformly distributed on a high-strength steel plate. The through holes not only can realize obvious weight reduction effect, but also can remarkably improve the corrosion effects of crushing, breaking and the like on the incident projectile body, thereby realizing higher protection efficiency.

The holes in conventional hole structure armor are generally cylindrical holes with circular, triangular or rectangular cross-sectional areas. Such columnar holes provide a large number of high strength edges on the exterior surface of the armor, which can subject incident projectiles with impact points near the edges to severe forces (also known as edge effects). However, this edge effect is only apparent when the hole diameter is close to the diameter of the incoming projectile. If the diameter of the projectile body is obviously smaller than that of the hole, the projectile body is more likely to directly pass through the hole; if the diameter of the projectile is significantly larger than the diameter of the hole, no significant asymmetric force is applied regardless of the position of the impact point. Therefore, the protection effect of the conventional hole structure armor still depends on the diameter of an incident projectile body in a real working scene, which is one of the reasons why the armor cannot be widely applied.

In view of the above, it is highly desirable to develop a new hole structure armor that has protection capability independent of the diameter of the incident projectile.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heterotypic pore structure protection armor can effectively reduce the destruction effect that has different diameter projectiles.

In order to achieve the above purpose, the present invention adopts the following technical solution.

The protective armor with the special-shaped hole structure comprises an armor base plate and a plurality of special-shaped holes which are arranged on the armor base plate and are through holes.

The utility model discloses further improvement lies in, the three-dimensional shape in special-shaped hole is taper, echelonment or the combination shape between them, and the cross sectional shape is circular, oval, triangle-shaped, quadrangle or is greater than four polygons.

The utility model discloses further improvement lies in, the opening in special-shaped hole, the great one side of hole diameter promptly, the face of meeting the bullet.

The utility model discloses a further improvement lies in, the shape of armor base plate is dull and stereotyped or buckled plate.

The utility model discloses further improvement lies in, the armor base plate is overlapped by single-deck high strength armor board or multilayer has the high strength armor board of different performance and constitutes.

The utility model discloses a further improvement lies in, the armoured base plate is made by high strength bulletproof material.

The utility model discloses further improvement lies in, and high strength bulletproof material is high strength steel or armoured ceramic.

Compare with current traditional pore structure protective armor, the utility model discloses can realize more abundant function than traditional pore structure protective armor. The detailed description is as follows:

1) tapered holes: the diameter of the cylindrical hole of the traditional hole structure protective armor is kept constant, while the diameter of the conical hole can be continuously changed. When the diameter of the hole on the back bullet surface is far smaller than that of the conventional bullet body, the funnel-shaped taper hole can effectively prevent the bullet body from directly penetrating through the center of the hole. In addition, the inclined conical surface can guide the bullet body and the fragments thereof to converge towards the center of the conical hole and further collide with each other, so that the penetration speed of the bullet body and the fragments thereof is reduced.

2) Step-shaped holes: conventional aperture structure armor provides a large number of edges at the projectile-facing side to produce a relatively significant edge effect on the incident projectile. The diameters of the stepped holes are changed in a stepped manner, so that the edges with the same number as the traditional hole structure armor can be provided on the bullet-facing surface, and a large number of edges can be provided below the bullet-facing surface at each layer of step again. The larger the number of steps, the larger the number of edges. The large number of high strength edges distributed throughout the armor substrate can significantly increase the probability that the projectile is subjected to severe asymmetric effects.

4) Other combination forms: on the basis of above-mentioned taper hole and shoulder hole, the hole shape still can be the special-shaped hole of other combination forms of cylinder hole, taper hole and shoulder hole. The special-shaped holes can simultaneously have the characteristics of holes with different shapes, so that more and more functions are realized.

3) Optimizing the shape: on the basis of the special-shaped hole, the shape of the armor base plate is flat plate, corrugated plate or other. Taking a corrugated plate as an example, the corrugated armor plate has an obvious inclination angle, so that an incident projectile body generates an obvious yawing phenomenon at a contact part with the armor plate due to the inclination angle, thereby improving the ballistic resistance of the armor plate.

4) Performance optimization: on the basis of the characteristics, the number of layers of the armored substrate is single layer or multilayer. For the multilayer armor base plate, each layer of armor base plate can be made of materials with different mechanical properties, and the layers are connected through a high-strength bonding layer. This kind of base plate performance optimization configuration along thickness direction has realized the utility model discloses with the effective combination of different engineering practical application scenes.

Drawings

Fig. 1 is a schematic view of a flat plate-shaped armor with a special-shaped hole structure according to the present invention, wherein fig. 1a and fig. 1b are a cross-sectional view and a perspective view of the flat plate armor with a tapered hole structure, respectively; fig. 1c, 1d and 1e are a sectional view and a perspective view of a plate protective armor of a stepped-hole structure and a perspective view of a plate protective armor of a quadrangular stepped-hole structure, respectively.

Fig. 2 is a schematic view of the corrugated plate-shaped protection armor with a special-shaped hole structure according to the present invention, wherein fig. 2a is a cross-sectional view of a corrugated plate protection armor with a triangular hole structure; FIG. 2b is a cross-sectional view of a trapezoidal hole structure corrugated plate protective armor; figure 2c is a cross-sectional view of a corrugated sheet armor having a corrugated cell structure.

FIG. 3 is a schematic cross-sectional view of a plate armor with a special-shaped hole structure, which is formed by combining a cylindrical hole, a stepped hole and a tapered hole.

FIG. 4 is a schematic cross-sectional view of a two-layer stepped-hole structure plate armor.

Fig. 5 is a graph comparing penetration failure results of the projectile and the target plate at the position of the hole center, wherein fig. 5a is a straight hole and fig. 5b is a tapered hole.

Fig. 6 is a graph comparing penetration failure results of the projectile and the target plate at the hole edge position, wherein fig. 6a is a straight hole and fig. 6b is a tapered hole.

Description of reference numerals:

1 is a high-strength metal flat plate; 2 is a conical hole; 3 is a step-shaped hole; 4 is a high-strength metal triangular corrugated plate; 5 is a high-strength metal trapezoidal corrugated plate; 6 is a high-strength metal corrugated plate; 7 is a special-shaped hole; 8 is an upper substrate; and 9 is a lower substrate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1 to 3, the utility model provides a pair of heterotypic pore structure protection armor, including high-strength metal flat plate 1 or high-strength metal triangle buckled plate 4 to and a large amount of taper holes 2, echelonment hole 3 or the heterotypic hole 7 that forms by cylinder hole, shoulder hole and taper punch combination on it, and heterotypic hole is the through-hole. Wherein, the high-strength metal flat plate 1 and the high-strength metal triangular corrugated plate 4 can be made of various high-strength armor materials, such as high-strength steel (such as ultra-high hardness bainite), armor ceramics or the like; the section of the high-strength metal triangular corrugated plate 4 can be triangular, trapezoidal, wavy or other; the opening of the conical hole 2 is upward, and the angle of the conical surface can be properly adjusted according to the actual situation; the opening of the step hole 3 is upward, and the number of steps can be properly adjusted according to the actual situation.

Referring to fig. 4, the number of layers of the high-strength metal flat plate 1 and the high-strength metal triangular corrugated plate 4 may be a single layer, two layers or even more. Taking two layers of high-strength metal flat plates 1 and high-strength metal triangular corrugated plates 4 as an example, the upper substrate 8 and the lower substrate 9 can be made of materials with different mechanical properties, so as to realize different engineering application purposes.

Referring to fig. 5, the protection capability of the traditional straight hole structure armor and the tapered hole structure armor at the position of the penetration hole core of the projectile is compared. The final penetration failure results show that: compared with the erosion in the middle of the projectile body in the armor with the straight hole structure, the projectile body in the armor with the conical hole structure has large-area serious erosion, slight deflection and serious fracture, and the protection capability for penetration of the projectile body is greatly improved. Both target plates are simply reamed.

Referring to fig. 6, the protection capability of the traditional straight hole structure armor and the tapered hole structure armor at the position of the penetration hole edge of the projectile body is compared. The final penetration failure results show that: in the straight hole structure armor, the final projectile body is subjected to local erosion and deflection due to asymmetric stress, and a target plate is reamed and expanded to a peripheral hole. Compared with the straight hole structure armor, the taper hole structure armor has the advantages that the serious erosion of the projectile body in the taper hole structure armor is in a wider range, the deflection is more obvious, the target plate is small in expansion area and does not expand to the peripheral holes, and the multiple impact resistance of the target plate is improved.

The above description is provided for the purpose of describing the present invention in more detail with reference to the specific preferred embodiments, and it should not be construed that the present invention is limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in various forms without departing from the spirit and scope of the present invention.

Claims (3)

1. A protective armor with a special-shaped hole structure is characterized by comprising an armor base plate and a plurality of special-shaped holes which are arranged on the armor base plate, wherein the special-shaped holes are through holes;

the shape of the armor substrate is a flat plate or a corrugated plate; the armor base plate is formed by superposing a single-layer high-strength armor plate or a plurality of layers of high-strength armor plates with different mechanical property materials;

the three-dimensional shape of the special-shaped hole is conical, stepped or the combination shape of the conical and the stepped holes, and the cross section shape is circular, oval, triangular, quadrangular or polygonal more than four; the opening of the special-shaped hole, namely the side with the larger diameter of the hole, faces to the bullet-facing surface.

2. The armor of claim 1, wherein the armor substrate is made of a high strength ballistic material.

3. The armor of claim 2, wherein the high-strength bulletproof material is high-strength steel or armor ceramic.

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