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Double-frustum embedding and extruding prestress constraint bullet shielding layer

A technology of prestressing and shielding layer, applied in defenses, covering/lining, buildings, etc., can solve the problems of material waste, prestress distribution, excessive unevenness, large wall thickness gap, etc.

Pending Publication Date: 2021-05-18
QINGDAO TECHNOLOGICAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for a thicker confinement block, the wall thickness difference between the large port and the small port of the confinement ring is too large, which will cause waste of material and excessive uneven distribution of prestress

Method used

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  • Double-frustum embedding and extruding prestress constraint bullet shielding layer
  • Double-frustum embedding and extruding prestress constraint bullet shielding layer
  • Double-frustum embedding and extruding prestress constraint bullet shielding layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] see figure 1 with figure 2 , the double-conical frustum embedded prestressed constrained bullet-shielding layer in the illustration is a specific embodiment of the present invention, and the pre-stressed structure of the bullet-shielding layer includes a double-conical frustum filling block 1 and a double-conical frustum filling block 1. The cylindrical ferrule 21 of the extrusion assembly, such as figure 2 As shown, the biconical frustum filling block 1 is a biconical frustum structure, including two coaxial reverse conical frustums. The two sides of the double cone filling block 1 are the small ends of two reverse cones, and the same double cone filling block 1 is assembled with two cylindrical ferrules 21 fixedly connected together, respectively surrounding the set On the outer conical surfaces of the two reverse conical frustums of the biconical frustum filling block 1, the cylindrical ferrule 21 has a conical inner ring with the same shape as the outer conical ...

Embodiment 2

[0075] see Image 6 with Figure 7 , the biconical truncated prestressed constrained shielding layer in the illustration is another specific embodiment of the present invention. Assembled grooved ferrules 22, such as Figure 7 As shown, the biconical frustum filling block 1 of this embodiment has the same biconical frustum structure as that of Embodiment 1, and two grooved ferrules 22 fixedly connected together are assembled on the same biconical frustum filling block 1, respectively surrounding the set On the outer conical surfaces and the small end faces of the two reverse conical frustums of the double conical frustum filling block 1, the groove ferrule 22 has a conical inner ring with the same shape as the outer conical surface of the corresponding conical frustum and The panel 27 covered by the small end face, the inner ring conical surface of the groove ferrule 22 on the same biconical frustum filling block 1 is a reverse conical surface, corresponding to the two rever...

Embodiment 3

[0080] see Figure 10-13 , the double-cone truncated prestressed constrained bullet-shielding layer in the illustration is another specific embodiment of the present invention, and this embodiment is an extension of Example 1. The prestressed constrained block includes a double-conical truncated filled block 1 And the cylindrical ferrule 21 for inserting and extruding the biconical truncated filling block 1, such as Figure 12 with Figure 13 As shown, the biconical frustum filling block 1 is a biconical frustum structure, including two coaxial reverse conical frustums. The two sides of the double cone filling block 1 are the small ends of two reverse cones, and the same double cone filling block 1 is assembled with two cylindrical ferrules 21 fixedly connected together, respectively surrounding the set On the outer conical surfaces of the two reverse conical frustums of the biconical frustum filling block 1, the cylindrical ferrule 21 has a conical inner ring with the same ...

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Abstract

The invention discloses a double-frustum embedding and extruding prestress constraint bullet shielding layer. The double-frustum embedding and extruding prestress constraint bullet shielding layer is mainly formed by assembling double-frustum filling blocks and hoops matched with the double-frustum filling blocks for constraint. Two oppositely-buckled hoops are adopted to be assembled on two frustum faces of the double-frustum filling blocks correspondingly, inner rings of the hoops and the outer conical faces of the corresponding frustums are matched and wedged through the conical faces, and the hoops of two frustums are fixedly connected. According to the double-frustum embedding and extruding prestress constraint bullet shielding layer, radial prestress or three-way prestress is simply and conveniently applied to fragile materials such as ceramic, concrete and glass under the room temperature condition, the constraint bullet shielding layer is suitable for applying prestress to protective components of various sizes, a fiber reinforced polymer which is lighter in weight and higher in strength can also be adopted as a constraint material, non-uniformity of the wall thickness of the hoops is reduced to a certain degree, materials are saved, the limiting function is achieved, and when any face of prestress constraint block is impacted, the two oppositely-buckled hoops can effectively prevent the frustums from being disengaged from the hoops.

Description

technical field [0001] The invention relates to a double-cone truncated prestressed constrained bullet-shielding layer. Background technique [0002] With the continuous upgrading and development of anti-armor weapons and equipment, as well as the development and application of artificial intelligence automatic aiming firearms, more severe challenges are posed to the protective performance and protective structures of armored equipment such as tanks, infantry fighting vehicles, and bullet-proof vehicles. Lighter, more effective protective armor and protective structures are a long way to go. Since the pioneering research work of Wilkins et al. on small aspect ratio armor-piercing projectile tests on ceramic thin plates and aluminum backplates of limited thickness, the research on the ballistic performance of ceramic armor has attracted everyone's attention in the past few decades. Due to ceramic materials (such as Al 2 o 3 , B 4 C, SiC, TiB 2 and AlN, etc.) have the cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F13/075E04F13/14E04H6/44F41H5/06
CPCE04F13/141E04F13/142E04F13/0875E04H6/44F41H5/06
Inventor 王子国孙宇雁
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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