CN220524764U - Reinforced fragile cover - Google Patents
Reinforced fragile cover Download PDFInfo
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- CN220524764U CN220524764U CN202322011469.2U CN202322011469U CN220524764U CN 220524764 U CN220524764 U CN 220524764U CN 202322011469 U CN202322011469 U CN 202322011469U CN 220524764 U CN220524764 U CN 220524764U
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- cover body
- cover
- reinforced
- frangible
- fragile
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- 230000002787 reinforcement Effects 0.000 claims abstract description 26
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- 230000014759 maintenance of location Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000005422 blasting Methods 0.000 abstract description 3
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- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model discloses a reinforced fragile cover, which comprises a fragile cover body with a multilayer structure, wherein the fragile cover body comprises a cover body outer surface, a cover body inner surface and a mooring net which are coaxially arranged; the outer surface of the cover body is provided with preset cracks which diverge from the center to the periphery, and the preset cracks penetrate through the outer surface of the cover body; the outer surface of the cover body is provided with a reinforcement body which diverges from the center to the periphery, and the reinforcement body protrudes out of the strip-shaped structure on the inner surface of the cover body; the preset cracks are arranged in a non-overlapping mode with the reinforcement body. The whole fragile cover product can be broken in a whole while meeting the requirement of effective cracking, and can not splash everywhere. The use has little influence on environment. When the device meets the requirement of actual use, the mechanical opening or blasting cover is under the action of large impact force, the impact force received by the center of the fragile cover body is maximum, the strength of the fragile cover body is ensured, the fragile cover body is effectively cracked, and the broken part is complete.
Description
Technical Field
The utility model belongs to the field of a transmitting cylinder cover, and particularly relates to a reinforced frangible cover.
Background
The cap of the cartridge not only performs the task of preventing the leakage of gas in the cartridge, but also requires a quick opening during firing, shortening the response time of the firing, an important component of the weapon storage and firing system. The metal cover in the form of mechanical opening is mostly adopted in the launch canister in China, so that the quality of the launch canister is improved, the cover opening form is complex, and emergency response during the firing of a weapon system is not facilitated. The rigid polyurethane foam plastic has the advantages of light weight, easy adjustment of sealing, high specific strength, heat insulation, sound insulation, shock resistance, impact resistance and the like, and is widely applied to the aspects of refrigerators, buildings, transportation, military aviation and the like. In recent years, the application of polyurethane rigid foam materials with high density (200-750 g/cm 3) as structural materials has been silently promoted, which is beneficial to the excellent compression strength, tensile strength, impact strength, elastic modulus and dimensional stability, so that the fragile cover (hereinafter referred to as fragile cover) for the transmitting tube is prepared from other materials.
The fragile cover material is fiber reinforced silicone rubber, and compared with other fragile materials such as rigid polyurethane foam, the fragile cover material has better flexibility and does not generate fragments. But during actual use, the mechanical opening or blasting lid receives the biggest impact force at big impact force under the effect of lid body center, if the intensity of lid body is not enough, can make lid body center broken earlier when using, is difficult to guarantee to launch the lid of case lid and effectively split, and the lid edge need the part that remains not broken, and broken part is complete.
By searching, application number CN202010898002.2 discloses a frangible cover comprising a base frame, a foam cover and a press frame; the edge of the foaming cover is tightly pressed by the bottom frame and the pressing frame and is fastened by adopting a connecting piece penetrating through the bottom frame and the pressing frame; the edge area of the foaming cover is smaller than that of the bottom frame, so that a peripheral gap is formed between the edge of the foaming cover and the bottom frame and is used for pouring airtight glue; the milling part of the foaming cover is also coated with airtight glue so as to prevent gas from leaking along the cover body of the foaming cover; the top surface diagonal department of foaming lid is equipped with cross stress groove along its radian, just the top surface edge mouth frame of foaming lid is equipped with annular stress groove all around, when the lid atress for the lid is four lamella breakage along stress groove. But this patent does not address the problem of broken partial integrity.
In summary, the reinforced fragile cover provided by the utility model can ensure the use effectiveness of the aircraft launching box cover, can crush according to a preset path, does not splash everywhere, is environment-friendly, and meets the market demand.
Disclosure of Invention
The utility model aims at the defects of the prior art and provides a reinforced frangible cover, which is characterized in that the inner surface of the cover body is reinforced to increase the strength of the cover body; and preset cracks are formed on the outer surface of the cover body, and mooring nets are arranged between the fragile cover bodies, so that the fragile cover product is formed into a whole. And adjusting the reinforcement and the weak part (thin wall and preset crack) of the fragile cover, analyzing the influence of the crack strength on the maximum impact force, and rapidly determining the crack strength of the fragile cover according to the maximum impact force so as to determine the direction and the structure of the preset crack.
This reinforced fragile lid is provided with the reinforcement with the great position of atress, sets up the preset crackle of diverging all around with the fragile lid body, combines the science setting of thin wall, makes whole fragile lid product can the monoblock broken again when satisfying effective splitting, can not splash everywhere.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the reinforced frangible cover comprises a frangible cover body with a multi-layer structure, wherein the frangible cover body comprises a cover body outer surface, a cover body inner surface and a mooring net which are coaxially arranged, and the mooring net is clamped in the middle; the outer surface of the cover body is provided with preset cracks which diverge from the center to the periphery, and the preset cracks penetrate through the outer surface of the cover body; the outer surface of the cover body is provided with a reinforcement body which diverges from the center to the periphery, and the reinforcement body protrudes out of the strip-shaped structure on the inner surface of the cover body; the preset cracks are arranged in a non-overlapping mode with the reinforcement body.
The reinforced frangible cover body is of a composite structure, and the mooring net is used as a connecting structure to connect the outer surface of the cover body and the inner surface of the cover body into a whole so as to increase the bonding strength of the frangible cover product; and the reinforcement is added at the position with larger bursting force, so that the whole fragile cover is effectively broken according to the required position, and cannot be broken in advance. When the broken frangible cover is broken, the structure of the mooring net can ensure that the inner and outer surfaces of the broken frangible cover body are still adhered to the mooring net, and the broken frangible cover is broken only at the weak part of the frangible cover.
Further, the pre-set crack simultaneously passes through the tethered mesh; the outer surface of the cover body is divided into a plurality of throwing bodies in a bisecting way. The outer surface of the cover body is equally divided, so that the breaking of the fragile cover is facilitated, and the breaking effect is ensured.
Further, the inner surface of the cover body is not provided with preset cracks. The preset cracks are not arranged on the inner surface of the cover body so as to enhance the stress intensity of the cover body and prevent the whole cover body from being broken according to a preset path.
Further, the end part of the preset crack surrounds the center of the outer surface of the cover body to form an annular gap. The annular notch is used for ensuring that the outer surface of the cover body is broken from the center to the periphery according to the extending direction of preset cracks during bursting. Under the same load form, the maximum tensile stress load occurs inside the pre-crack groove, which is beneficial for the crack to develop along the inside of the pre-crack groove (the brittle material fracture is mainly the tensile fracture).
Further, the fragile cover body is an arc cover body formed by arching the inner edge of the retaining flange towards the center; the fragile cover body is connected with the retaining flange through a thin wall. The thin wall is designed to break the whole cover body from the thin wall to peel off the inner edge of the retaining flange.
Further, the thin wall is an inner fracture groove formed by an inclined surface which is obliquely arranged from the fragile cover body to the direction of the retaining flange. Better consistency when the fragile cover is broken can be ensured; better Ji Genxing for frangible caps; the thickness of the weak areas is designed to ensure that broken fragments fly out along the preset direction, so that the channel is timely opened and the broken fragments are not interfered with the aircraft.
Further, the inner wall of the center of the inner surface of the cover body is provided with an annular table in a protruding mode, one end of the reinforcement body is connected with the annular table, and the other end of the reinforcement body is connected with the thin wall.
Further, one end of the reinforcement body connected with the annular table is provided with a horn-shaped structure which is contracted inwards by two side walls of the strip-shaped structure. The design can ensure the strength of the fragile cover body, and the concentration area is arranged in the center, so that the cover body is not broken due to overlarge strength while the strength is ensured.
Further, one end of the reinforcement body connected with the thin wall is provided with a transition zone which is inclined from the inner surface of the cover body to the outer surface of the cover body.
Further, the mooring net is a net-shaped nylon material or a spiral nylon material. The nylon net takes nylon yarn, polyester yarn, nano-fiber yarn and other chemical fibers as raw materials, and has the characteristics of high toughness, good elasticity, corrosion resistance, oil resistance, water resistance, wear resistance, high temperature resistance, weather resistance and the like; also has the characteristics of good insulativity, low lubrication coefficient and the like. The net structure can be effectively connected with the inner surface and the outer surface of the cover body to combine the mooring net with the outer surface of the cover body and the inner surface of the cover body. When the novel mooring net is used, even if the inner surface and the outer surface of the cover body are damaged by impact, the mooring net can still effectively connect fragments by utilizing the mesh structure.
Compared with the prior art, the utility model has the beneficial effects that:
the reinforced fragile cover is reinforced by the inner surface of the cover body so as to increase the strength of the cover body; and preset cracks are formed on the outer surface of the cover body, and mooring nets are arranged between the fragile cover bodies, so that the fragile cover product is formed into a whole. Adjusting the reinforcement and the weak part (thin wall and preset crack) of the fragile cover, analyzing the influence of the crack strength on the maximum impact force, and rapidly determining the crack strength of the fragile cover according to the maximum impact force so as to determine the direction and the structure of the preset crack; the whole fragile cover product can be broken in a whole while meeting the requirement of effective cracking, and can not splash everywhere.
The frangible cover body, the retaining flange and the mooring net are coaxially arranged and provided with preset cracks which diverge from the center to the periphery. The design is to break along the direction of the pre-crack when the breaking force is applied; and the edges of the fragile cover body and the retaining flange are provided with thin walls, so that the whole cover body can be broken along the transitional connection part, and the redundant parts can not be tethered on the retaining flange surface.
Drawings
Fig. 1 is a schematic structural view of the outer surface of the cover body of the reinforced frangible cover according to the present utility model.
Fig. 2 is a schematic partial cross-sectional view of a reinforced frangible cover of the present utility model.
Fig. 3 is a schematic cross-sectional view of a reinforced frangible cover according to the present utility model.
Fig. 4 is an enlarged view of the structure of fig. 3.
Fig. 5 is a schematic structural view of the tethered mesh of the reinforced frangible cover of the present utility model.
Fig. 6 is a schematic structural view of the inner surface of the cover body of the reinforced frangible cover according to the present utility model.
Fig. 7 is a schematic front view of the inner surface of the cover body of the reinforced frangible cover according to the present utility model.
The reference numerals include: 11. the inner surface of the cover body comprises a cover body outer surface, a 111 annular notch, a 112 sink groove, a 113V-shaped groove structure, a 12 mooring net, a 13 cover body inner surface, a 131 annular table, a 132 trumpet-shaped structure, a 133 transition area, a 2 indwelling flange, a 3 reinforcing body, a 41 thin wall, a 42 preset crack, a 5 internal fracture groove and a 6 mounting hole.
Detailed Description
For the purposes of illustrating and understanding the utility model, the following words are first described in the meaning of the utility model: embodiments of the present utility model are described in detail below with reference to FIGS. 1-7.
Example 1
The reinforced frangible cover of the embodiment is characterized in that the mooring net 12 is designed between the outer surface 11 of the cover body and the inner surface 13 of the cover body through the design of the cover body, so that the whole frangible cover product can be broken in a whole while being effectively cracked, and the product can not splash everywhere.
Specifically, the reinforced frangible cover comprises a composite frangible cover body comprising a cover body outer surface 11 and a cover body inner surface 13 which are coaxially arranged and a captive mesh 12 which is arranged in a sandwich manner; the cover body outer surface 11 is provided with preset cracks 42 which diverge from the center to the periphery, and the preset cracks 42 penetrate through the cover body outer surface 11; the outer surface 11 of the cover body is provided with a reinforcement body 3 which diverges from the center to the periphery, and the reinforcement body 3 protrudes out of the inner surface 13 of the cover body; the preplanned crack 42 is arranged non-coincident with the reinforcement 3. The frangible cover body is made of high density foamed polyurethane, and the mooring net 12 is made of a net-shaped nylon material or a spiral nylon material, and in the embodiment, is of a net-shaped structure with staggered warps and wefts. The tie down net 12 covers the entire joint surface of the cover outer surface 11 and the cover inner surface 13, and the tie down net 12 is adhered or embedded between the cover outer surface 11 and the cover inner surface 13. The nylon net takes nylon yarn, polyester yarn, nano-fiber yarn and other chemical fibers as raw materials, and has the characteristics of high toughness, good elasticity, corrosion resistance, oil resistance, water resistance, wear resistance, high temperature resistance, weather resistance and the like; also has the characteristics of good insulativity, low lubrication coefficient and the like. The net structure can be effectively connected with the inner surface and the outer surface of the cover body to combine the mooring net with the outer surface of the cover body and the inner surface of the cover body. When the novel mooring net is used, even if the inner surface and the outer surface of the cover body are damaged by impact, the mooring net can still effectively connect fragments by utilizing the mesh structure.
Specifically, the pre-crack 42 passes through both the mooring net 2 and the cover outer surface 11; the cover outer surface 11 is bisected into a plurality of ejectors. The outer surface of the cover body is equally divided, so that the breaking of the fragile cover is facilitated, and the breaking effect is ensured. But does not puncture the inner surface 13 of the cover, the inner surface of the cover is not provided with preset cracks 42 in order to enhance the stress intensity of the cover, so as to prevent the whole cover from being broken according to a preset path. At the same time, the end of the pre-crack 42 surrounds the center of the cover outer surface 11 as an annular gap 111. The annular gap 111 is used for ensuring that the outer surface of the cover body is broken from the center to the periphery according to the extending direction of preset cracks during the breaking. And the connection part of the outer surface 11 of the cover body and the retaining flange 2 is provided with a sink 112, namely, the outer surface 11 of the cover body is provided with the sink 112 on one side close to the retaining flange 2 in a circumferential direction. The countersink 112 is located opposite the internal fracture groove 5 to provide better alignment of the frangible cover edges.
In order to ensure the usability of the whole fragile cover, a reinforcement body 3 and a weak part are arranged on the fragile cover body, wherein the weak part comprises a thin wall 41 for connecting the fragile cover body and the retaining flange 2, and preset cracks 42 which are dispersed from the center of the fragile cover body to the periphery; the preset cracks 42 divide the cover outer surface 11 equally into a number of ejectors. The preset cracks 42 divide the whole outer surface 11 of the cover body into a plurality of areas to be broken, and the preset cracks 42 of the outer surface 11 of the cover body are preferably arranged into V-shaped groove structures 113, namely, the preset cracks 42 are arranged in sharp angles, so that the stress of the whole cover body is more concentrated, and the breaking effect is better. At the same time, a transition zone 133 is arranged at the joint of the edge of the outer surface 11 of the cover body and the retaining flange 2, and the transition zone 133 is preferably a transition inclined plane so as to increase the fracture uniformity of the frangible cover body and the retaining flange 2.
In order to ensure better consistency when the frangible cover breaks; better Ji Genxing for frangible caps; the thickness of the weak areas is designed to ensure that broken fragments fly out along the preset direction, so that the channel is timely opened and the broken fragments are not interfered with the aircraft. The fragile cover body is an arc cover body formed by the arch of the inner edge of the retaining flange 2 towards the center; the frangible cover body is connected to the retention flange 2 by a thin wall 41. The thin wall 41 is an inclined plane which is obliquely arranged from the fragile cover body to the retaining flange 2, namely, the outer edge of the fragile cover body gradually thins to the retaining flange to form a transitional connection surface, so that the direction of an internal fracture groove can be effectively broken during use. And an internal fracture groove 5 is arranged on the circumferential direction of the retaining flange 2, and the internal fracture groove 5 is provided with an angle, and is generally preferably smaller than 90 degrees, namely takes a sharp angle shape; this design is more prone to stress concentration and breakage. Better consistency when the fragile cover is broken can be ensured; the frangible cover is better homogenous.
According to the relation of thickness and bursting force, the central position of the cover body with large bursting force is thickened, so that the strength of the cover body is higher than that of the peripheral thin wall, and the cover body is broken according to preset requirements during use. The inner wall of the center of the inner surface 13 of the cover body is provided with an annular table 131 in a protruding mode, one end of the reinforcement body 3 is connected with the annular table 131, and the other end of the reinforcement body is connected with the thin wall 41. One end of the reinforcement body 3 connected to the annular table 131 is provided with a horn-like structure 132 which is inwardly contracted by both side walls of the strip-like structure.
The reinforced fragile cover is reinforced by the inner surface of the cover body so as to increase the strength of the cover body; and preset cracks are formed on the outer surface of the cover body, and mooring nets are arranged between the fragile cover bodies, so that the fragile cover product is formed into a whole. The whole fragile cover product can be broken in a whole while meeting the requirement of effective cracking, and can not splash everywhere. When the cover is used in practice, the mechanical opening or blasting cover is under the action of large impact force, the impact force received by the center of the fragile cover body is maximum, the strength of the fragile cover body is high, the cover body of the fragile cover is effectively cracked, and the broken part is complete.
The above is merely an embodiment of the present utility model, and the present utility model is not limited to the field of the present embodiment, but the specific structure and characteristics of the present utility model are not described in detail. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the present utility model, which should also be considered as the scope of the present utility model, and which does not affect the effect of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (10)
1. The reinforced frangible cover is characterized by comprising a frangible cover body with a multi-layer structure, wherein the frangible cover body comprises a cover body outer surface (11), a cover body inner surface (13) and a mooring net (12) which are coaxially arranged, and the mooring net is clamped in the middle; the cover body outer surface (11) is provided with preset cracks (42) which diverge from the center to the periphery, and the preset cracks (42) penetrate through the cover body outer surface (11); the outer surface (11) of the cover body is provided with a reinforcement body (3) which diverges from the center to the periphery, and the reinforcement body (3) protrudes out of the strip-shaped structure of the inner surface (13) of the cover body; the preset cracks (42) are arranged in a non-overlapping manner with the reinforcement body (3).
2. The reinforced frangible cover of claim 1, wherein the pre-crack (42) passes through the tethered mesh (12) simultaneously; the outer surface (11) of the cover body is divided into a plurality of throwing bodies in a bisecting way.
3. A reinforced frangible cover according to claim 2, wherein said cover inner surface (13) is not provided with pre-cracks (42).
4. A reinforced frangible cover according to claim 3, wherein the ends of the pre-crack (42) define an annular gap (111) at the centre of the outer surface (11) of the cover.
5. The reinforced frangible cover of claim 4, wherein the frangible cover body is an arcuate cover body formed by the inner edge of the retention flange (2) arching towards the center; the fragile cover body is connected with the retaining flange (2) through a thin wall (41).
6. The reinforced frangible cover of claim 5, wherein the thin wall (41) is an internal fracture groove (5) formed by a slope of the frangible cover body disposed obliquely to the direction of the retention flange (2).
7. The reinforced frangible cover of claim 6, wherein the inner wall of the inner surface (13) of the cover body is provided with an annular table (131) in a protruding manner, and one end of the reinforcing body (3) is connected with the annular table (131) and the other end is connected with the thin wall (41).
8. The reinforced frangible cover of claim 7, wherein one end of the reinforcement (3) connected to the annular land (131) is provided with a horn-like structure (132) which is inwardly contracted by both side walls of the strip-like structure.
9. A reinforced frangible cover according to claim 8, wherein one end of the reinforcement (3) connected to the thin wall (41) is provided with a transition zone (133) inclined from the cover inner surface (13) towards the cover outer surface (11).
10. The reinforced frangible cover of any of claims 1-9, wherein the tethered mesh (12) is a mesh nylon material or a spiral nylon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322011469.2U CN220524764U (en) | 2023-07-28 | 2023-07-28 | Reinforced fragile cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322011469.2U CN220524764U (en) | 2023-07-28 | 2023-07-28 | Reinforced fragile cover |
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| Publication Number | Publication Date |
|---|---|
| CN220524764U true CN220524764U (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322011469.2U Active CN220524764U (en) | 2023-07-28 | 2023-07-28 | Reinforced fragile cover |
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| Country | Link |
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| CN (1) | CN220524764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114970251A (en) * | 2022-05-12 | 2022-08-30 | 山东非金属材料研究所 | Design and manufacturing method of composite material frangible cover |
-
2023
- 2023-07-28 CN CN202322011469.2U patent/CN220524764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114970251A (en) * | 2022-05-12 | 2022-08-30 | 山东非金属材料研究所 | Design and manufacturing method of composite material frangible cover |
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