CN211953870U - Integral equal-arc-surface ceramic bulletproof plate - Google Patents

Abstract

The utility model discloses an integral equal-cambered surface ceramic bulletproof plate, which is a multi-curved surface structure formed by intersecting at least two curved surface bodies with the same curvature radius and different circle centers; the intersection positions are smoothly set. The ceramic bulletproof plate is a multi-curved-surface body formed by intersecting curved-surface bodies with the same curvature radius and different circle centers, and the ceramic bulletproof plate with the structure is convenient to process a proper partition plate, so that a plurality of plates can be loaded and burned at one time, and the loading and burning efficiency is improved. Moreover, the bulletproof plate with the structure can be directly formed by hot-pressing sintering, a plurality of small pieces do not need to be spliced, and the overall performance of the ceramic bulletproof plate can be effectively improved.

Description

Integral equal-arc-surface ceramic bulletproof plate

Technical Field

The utility model belongs to pottery bulletproof plate field, concretely relates to cambered surface pottery bulletproof plate such as whole.

Background

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art that is already known to a person skilled in the art.

The bulletproof harness for protecting human bodies is generally formed by compounding an inner layer of a ceramic bulletproof inserting plate and a high polymer material of which the outer layer is wrapped by the ceramic bulletproof inserting plate. The outer layer of polymeric material can increase the wearing comfort of the bulletproof harness and protect the human body from being damaged by ceramic fragments, but the quality of the bulletproof ceramic is decisive for the bulletproof performance.

The influence factors of the penetration resistance of the ceramic bulletproof plate include the hardness, the compressive strength, the Young's modulus, the fracture energy, the structure of an interface and the like of the ceramic. The ceramic bulletproof plate in China is generally prepared by adopting a hot-pressing sintering process, and the hot-pressing sintering process can only produce products with simple shapes such as blocky sheets and the like, and then the small blocks are spliced into the ceramic bulletproof plate. Under the condition, when the ceramic bulletproof plate is impacted by a warhead, the ceramic bulletproof plate is easy to fall off in a whole block, and the continuous impact resistance is poor.

Disclosure of Invention

In order to solve the technical problem existing in the prior art, the utility model aims at providing a cambered surface pottery bulletproof plate such as whole.

In order to solve the above technical problem, one or more embodiments of the present invention provide the following technical solutions:

an integrated equal-arc surface ceramic bulletproof plate is a multi-curved-surface structure formed by intersecting at least two curved-surface bodies with the same curvature radius and different circle centers; the connection position is smoothly set.

Compared with the prior art, the utility model discloses a beneficial effect of above embodiment does:

the ceramic bulletproof plate is a multi-curved-surface body formed by intersecting curved-surface bodies with the same curvature radius and different circle centers, and the ceramic bulletproof plate with the structure is convenient to process a proper partition plate, so that a plurality of plates can be loaded and burned at one time, and the loading and burning efficiency is improved. Moreover, the bulletproof plate with the structure can be directly formed by hot-pressing sintering, a plurality of small pieces do not need to be spliced, and the overall performance of the ceramic bulletproof plate can be effectively improved.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

FIG. 1 is a front view of an equal radian bulletproof plate of an embodiment of the present invention;

r1 is an upper chamfer at the upper end of the bulletproof plate; l1 is the ballistic panel bottom width; l2 is the height of the side of the ballistic panel; l3 and L4 are the width and height of the upper chamfer of the bulletproof plate; r2 is a lower chamfer at the upper end of the bulletproof plate; r3 is a chamfer at the lower end of the bulletproof plate;

fig. 2 is a top view of the equal radian bulletproof plate of the embodiment of the present invention;

r6 is the curvature of the lower end of the ballistic panel; r7 is the curvature of the upper end of the curvature of the lower end of the ballistic panel;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

r4 and R4 are radii of curvature at the center of the vertical bisector of the upper and lower surfaces of the ballistic panel. a is the thickness of the center of the bulletproof plate; b is the thickness at the center of the upper edge.

FIG. 4 is a sectional view taken in the direction G-G of FIG. 1;

r5 is the radius of curvature at the center of the horizontal midline of the upper and lower surfaces of the ballistic panel. b1 is the thickness at the center of the side edge; a1 is the thickness at the center of the ballistic panel;

fig. 5 is a schematic structural diagram of the embodiment of the present invention, which utilizes a hot pressing mold to perform simultaneous hot pressing sintering of a plurality of bulletproof plates.

In the figure, 1, a partition plate, 2, a mould cylinder, 3, an upper pressure head, 4, a ceramic blank, 5 and a lower pressure head.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

An integrated equal-arc surface ceramic bulletproof plate is a multi-curved-surface structure formed by intersecting at least two curved-surface bodies with the same curvature radius and different circle centers; the connection position is smoothly set.

In some embodiments, the ceramic ballistic panel is thick in the middle and thin at the edges.

The radian bulletproof plate is thick in the middle and slightly thin in the edge, so that the quality of the bulletproof plate can be reduced while the protection effect of the core part of a human body is not reduced, the load of personnel is reduced, and the wearing comfort is improved.

Furthermore, the thickness of the middle part of the ceramic bulletproof plate is 10-40mm, and the thickness of the edge is 3-20 mm.

Furthermore, the thickness of the middle part of the ceramic bulletproof plate is 20-30mm, and the thickness of the edge is 5-15 mm.

The thickness of the ceramic bulletproof plate gradually decreases from the middle to the edge.

Furthermore, the ceramic bulletproof plate is of a double-curved-surface-body structure, one curved surface body is a cuboid curved surface body, the other curved surface body is a prismoid curved surface body, and the two curved surface bodies are intersected through a large-size end.

The cuboid curved surface body is a curved surface body structure with a certain thickness formed by bending a cuboid with a certain thickness to one side; the frustum curved body is a curved body formed by bending a frustum having a certain thickness to one side.

Furthermore, the width of the short side of the ceramic bulletproof plate is 150-350mm, the width of the side opposite to the short side is 200-500mm, and the length of the ceramic bulletproof plate is 250-600 mm.

When the ceramic bulletproof plate is used, the ceramic bulletproof plate is placed in front of a human body, the short edge faces upwards, the long edge faces downwards, the width of the short edge is small, effective protection on the human body can be guaranteed, the quality of the bulletproof plate can be reduced, weight of personnel is reduced, and flexibility is improved.

Furthermore, the curvature radius of each curved surface body of the ceramic bulletproof plate is 200-2000 mm. The curvature of the human body protection plate inserting plate is designed according to the curve of a human body, is not a single radius size, and is designed along with the change of the human body, such as: the curvature radius of the breast position of the guard plate is large, and the curvature radius of the waist position is small.

Furthermore, the curvature radius of each curved surface body of the ceramic bulletproof plate is 300-1500 mm.

In some embodiments, each corner of the ceramic ballistic panel is provided with a chamfer. Set up the chamfer, with the smooth setting of each angle department of ceramic bulletproof plate, can effectively prevent the fish tail.

Further, the chamfer is curved.

Example 1:

as shown in fig. 2, an integrated iso-cambered ceramic armor is a hyperboloid structure formed by intersecting two curved bodies with the same curvature radius and different circle centers; the intersection positions are smoothly set. The middle of the ceramic bulletproof plate is thick, and the edge of the ceramic bulletproof plate is thin.

As shown in fig. 1, R1 is the upper chamfer radius of the upper end of the bulletproof plate, and R1 is 20 mm; l1 is the width of the bottom of the bulletproof plate, and L1 is 260 mm; l2 is the height of the side edge of the bulletproof plate, and L2 is 320 mm; l3 and L4 are the width and height of the upper chamfer of the bulletproof plate, L3 is 50mm, and L4 is 70 mm; r2 is the lower chamfer radius of the upper end of the bulletproof plate, and R2 is 30 mm; r3 is the chamfer radius of the lower end of the bulletproof plate, and R3 is 20 mm.

As shown in fig. 3, the arc ballistic panel has a thick middle part with a thickness of 20mm, a slightly thinner edge, a thickness at the center of the short side with b thickness of 15 mm.

As shown in fig. 4, R5 is the radius of curvature at the center of the horizontal bisector of the upper and lower surfaces of the ballistic panel, and R5 is 400 mm. b1 is the thickness at the center of the side edge, b1 ═ 9.8 mm; a1 is the thickness of the armor at the center, a1 is 10 mm.

As shown in fig. 5, the graphite mold for hot-press sintering of the equal arc ceramic armor plate or more includes: the middle part of the mould cylinder body 2 is provided with a mould cavity, and the cross section shape of the mould cavity is consistent with the outline shape of the bulletproof plate to be sintered; 13 partition plates 1 are arranged on the cross section of the die cavity and attached to the inner wall of the die cavity, each partition plate 1 is a hyperboloid formed by intersecting arc surfaces with the same curvature radius and different circle centers, the middle of each partition plate is thin, and the edge of each partition plate is thick, so that the bulletproof plate with the thick middle and the thin edge is prepared; the upper pressing head 3 and the lower pressing head 5 are respectively arranged at two ends of the die cavity; the working surfaces of the upper pressing head 3 and the lower pressing head 5 are respectively an inner concave surface and an outer convex surface; the concave working surface is consistent with the concave surface of the partition board in shape and size, and the convex working surface is consistent with the convex surface of the partition board in shape and size. The mould barrel is of a split structure and is formed by splicing four graphite blocks, and the four graphite blocks are distributed in the circumferential direction of the mould barrel.

The application process of the graphite mold is explained by taking the boron carbide ceramic hot press molding as an example.

1. Putting the graphite lower pressure head into a hot pressing furnace;

2. assembling the graphite outer sleeve in place in a hot pressing furnace by taking the lower pressure head as a reference;

3. putting a prepressed boron carbide ceramic green body, wherein the radian of the green body is the same as that of the upper surface of the lower pressure head;

4. putting an intermediate graphite partition plate;

5. then putting a prepressed boron carbide ceramic green body, and then putting an intermediate graphite partition plate; according to production requirements, combining the height of the die and the thickness of the product, repeating the operation, and filling proper amount of boron carbide ceramic green bodies;

6. covering a graphite upper pressure head;

7. heating and heating according to a sintering schedule to finish the hot-pressing sintering process;

8. after the temperature of the hot pressing furnace is reduced, the hot pressing furnace is taken out, and the graphite upper pressing head, the boron carbide ceramic bulletproof plate and the intermediate partition plate are taken out in sequence until the graphite upper pressing head, the boron carbide ceramic bulletproof plate and the intermediate partition plate are taken out completely;

9. and the used graphite mould assembly is regularly stored for later use.

By adjusting the size of the mould, the graphite mould for the hot-pressed sintered equal-arc-surface ceramic bulletproof plate with different geometric sizes can be obtained.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an it is whole that cambered surface pottery bulletproof plate which characterized in that: the multi-curved surface structure is formed by intersecting at least two curved surface bodies with the same curvature radius and different circle centers; the intersection positions are smoothly set.

2. The integrated isoplanar ceramic armor of claim 1 wherein: the middle of the ceramic bulletproof plate is thick, and the edge of the ceramic bulletproof plate is thin.

3. The integrated isoplanar ceramic armor of claim 2 wherein: the thickness of the middle part of the ceramic bulletproof plate is 10-40mm, and the thickness of the edge is 3-20 mm.

4. The integrated isoplanar ceramic armor of claim 3, wherein: the thickness of the middle part of the ceramic bulletproof plate is 20-30mm, and the thickness of the edge is 5-15 mm.

5. The integrated isoplanar ceramic armor of claim 1 wherein: the ceramic bulletproof plate is of a double-curved-surface structure, one curved-surface body is a cuboid curved-surface body, the other curved-surface body is a prismoid curved-surface body, and the two curved-surface bodies are intersected through a large-size end.

6. The integrated isoplanar ceramic armor of claim 5, wherein: the width of the short side of the ceramic bulletproof plate is 150-350mm, the width of the side opposite to the short side is 200-500mm, and the length of the ceramic bulletproof plate is 250-600 mm.

7. The integrated isoplanar ceramic armor of claim 5, wherein: the curvature radius of each curved surface body of the ceramic bulletproof plate is 200-2000 mm.

8. The integrated isoplanar ceramic armor of claim 7, wherein: the curvature radius of each curved surface body of the ceramic bulletproof plate is 300-1500 mm.

9. The integrated isoplanar ceramic armor of claim 1 wherein: and each corner of the ceramic bulletproof plate is provided with a chamfer.

10. The integrated isoplanar ceramic armor of claim 9, wherein: the chamfer is curved.

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