CN113091506B - Film front cover suitable for burst-type launch canister - Google Patents
Film front cover suitable for burst-type launch canister Download PDFInfo
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- CN113091506B CN113091506B CN202110302181.3A CN202110302181A CN113091506B CN 113091506 B CN113091506 B CN 113091506B CN 202110302181 A CN202110302181 A CN 202110302181A CN 113091506 B CN113091506 B CN 113091506B
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- cover frame
- arc
- lower cover
- upper cover
- shaped opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A35/00—Accessories or details not otherwise provided for
- F41A35/02—Dust- or weather-protection caps or covers
- F41A35/04—Muzzle covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F1/00—Launching apparatus for projecting projectiles or missiles from barrels, e.g. cannons; Harpoon guns
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Tents Or Canopies (AREA)
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Abstract
The invention provides a film front cover suitable for a burst-type launch canister, which comprises an upper cover frame 10, a lower cover frame 20, a film 30 and non-woven fabrics 40; the upper cover frame 10 is coaxially connected with the lower cover frame 20, one side of the lower cover frame 20, which is not connected with the upper cover frame 10, is positioned in the launch canister, a first special-shaped opening 18 is arranged on the upper cover frame 10, a second special-shaped opening 28 is arranged on the lower cover frame 20, and the first special-shaped opening 18 and the second special-shaped opening 28 are identical in shape and overlapped in position; a thin film 30 and a non-woven fabric 40 are arranged between the upper cover frame 10 and the lower cover frame 20, and when the guided missile is launched, the guided missile firstly passes through the second special-shaped opening 28, sequentially penetrates through the non-woven fabric 40 and the thin film 30, and flies away through the first special-shaped opening 18. The invention has simple structure, convenient operation and good stability, avoids the safety risk brought to the work of vehicle-carrying or ship-carrying equipment, has simple processing and saves the manufacturing cost.
Description
Technical Field
The invention relates to the field of missile launching, in particular to a film front cover suitable for a burst-type launching canister.
Background
The front cover is used as a main functional component of the missile launcher, and dry gas with certain pressure needs to be filled into the missile launcher during storage of the missile according to the maintenance-free requirement of the existing missile, so that a good storage environment is provided for electronic equipment on the missile. Therefore, the front cover has certain bearing (pressure) capacity and air tightness performance, and the missile in the launching tube is protected.
Along with the continuous update of missile weapon systems, the technology of the front cover of the missile launcher is rapidly developed, various cover opening modes such as mechanical type, fragile type, easy-to-crack and non-falling type and the like are sequentially generated, the mechanical cover opening mode is opened as a hydraulic system is needed, the maintenance cost is high, the mechanical cover opening mode is gradually eliminated, the conventional front cover is formed by a composite material mold, and two cover opening modes of easy-to-crack cover body non-falling and fracture according to the number of petals (easy-to-crack and non-falling type) or fragile cover body and fracture according to the number of petals (fragile type) are adopted. The easily-broken cover body is not dropped and is broken according to the number of the petals, so that multiple materials are required to be compounded for ensuring that the cover body is not dropped, the process is more complex, the cost is higher, and the reliability is poorer; the fragile cover body and the composite material are broken according to the number of the petals, the composite material cannot be broken according to the number of the petals due to the inherent characteristic of high discreteness of the composite material forming process, and the petals with certain quality bring safety risks to the work of vehicle-carrying equipment or ship-carrying equipment due to the uncertainty of the motion track in the launching process. Aiming at the defects in the prior art and solving the problems of the prior front cover, the invention provides the assembled light film front cover which has the advantages of good quality consistency, simple structure, small size, light weight, no need of opening a die, low cost and high reliability, and is particularly urgent for meeting the requirements of novel emission conditions.
Patent document CN208704539U discloses a fragile rocket launching tube cover, which comprises a pressure plate and a cover plate, wherein the pressure plate is sleeved in the cover plate, the cover plate is provided with a thread which is in threaded connection with a rocket launching tube body, and the pressure plate is provided with a fragile structure. It has the effects that: 1. the launching rapidity of the rocket is improved, and the rocket can be launched without opening the launching cylinder cover of the rocket; 2. the sealing performance is good. However, the technical scheme belongs to a cover opening mode of a fragile cover body and a cover opening mode of a fragile type cover body which is broken according to the number of the petals, and due to uncertainty of a motion track in the launching process, safety risks are brought to work of vehicle-carrying or ship-based equipment.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a film front cover suitable for a burst-type launch canister.
The film front cover suitable for the burst-type launch canister comprises an upper cover frame, a lower cover frame, a film and non-woven fabrics;
the upper cover frame is coaxially connected with the lower cover frame, one side, which is not connected with the upper cover frame, of the lower cover frame is positioned in the launching tube, a first special-shaped opening is formed in the upper cover frame, a second special-shaped opening is formed in the lower cover frame, and the first special-shaped opening and the second special-shaped opening are identical in shape and are overlapped in position;
and a film and a non-woven fabric are arranged between the upper cover frame and the lower cover frame, and when the guided missile is launched, the guided missile firstly passes through the second special-shaped opening, sequentially penetrates through the non-woven fabric and the film, and flies away through the first special-shaped opening.
Preferably, the non-woven fabric, the film, the upper cover frame and the lower cover frame are all equal in outer diameter.
Preferably, the upper cover frame and the film, the film and the non-woven fabric, and the non-woven fabric and the lower cover frame are adhered through silica gel.
Preferably, the positioning device further comprises a positioning pin, a first positioning pin hole is formed in the upper cover frame, and a second positioning pin hole is formed in the lower cover frame and corresponds to the first positioning pin hole;
the positioning pin sequentially penetrates through the first positioning pin hole, the thin film, the non-woven fabric and the second positioning pin hole.
Preferably, the upper cover frame is riveted with the lower cover frame;
a first countersunk smooth hole is formed in the circumferential direction of the upper cover frame, and a second countersunk smooth hole is formed in the position, corresponding to the first countersunk smooth hole, of the lower cover frame;
the rivet sequentially passes through the first countersunk head unthreaded hole, the film, the non-woven fabric and the second countersunk head unthreaded hole.
Preferably, a plurality of first round holes are uniformly arranged on the circumferential direction of the upper cover frame;
a plurality of second round holes are uniformly formed in the circumferential direction of the lower cover frame.
Preferably, the film comprises a metal film.
Preferably, an annular groove is formed in one side, close to the interior of the launching tube, of the lower cover frame;
and a sealing ring is arranged in the annular groove.
Preferably, the cross section of the first shaped opening comprises four third arcs and four first arc-shaped openings;
the two ends of the third arc line are connected with the end parts of the adjacent first arc-shaped openings, and the two ends of the first arc-shaped openings are connected with the end parts of the adjacent third arc lines.
Preferably, the first arcuate opening comprises a first arc, two second arcs, and two first straight segments;
two second pitch arcs and two first pitch arcs are the symmetry setting, and the one end of adjacent first pitch arc is connected at the both ends of first pitch arc, and the one end of second pitch arc is connected to the other end of first pitch arc, and the tip of third pitch arc is connected to the other end of second pitch arc.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has simple structure, convenient operation and good stability, avoids the safety risk brought to the work of vehicle-carrying or ship-carrying equipment, has simple processing and saves the manufacturing cost.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged partial schematic view of the present invention;
FIG. 4 is a schematic structural view of the upper cover frame according to the present invention;
FIG. 5 is a schematic cross-sectional view of the upper lid frame of the present invention;
FIG. 6 is a schematic structural view of a lower cover frame according to the present invention;
FIG. 7 is a schematic cross-sectional view of the lower cover frame of the present invention.
The figures show that:
First locating pin hole 15 and second round hole 24 sealing ring 60
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the present invention.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The invention discloses a film front cover suitable for a burst-type launch canister, which comprises an upper cover frame 10, a lower cover frame 20, a film 30 and non-woven fabrics 40, wherein the upper cover frame is provided with a plurality of through holes; the upper cover frame 10 is coaxially connected with the lower cover frame 20, one side of the lower cover frame 20, which is not connected with the upper cover frame 10, is positioned in the launcher, a first special-shaped opening 18 is arranged on the upper cover frame 10, a second special-shaped opening 28 is arranged on the lower cover frame 20, and the first special-shaped opening 18 and the second special-shaped opening 28 are identical in shape and overlapped in position; a film 30 and a non-woven fabric 40 are arranged between the upper cover frame 10 and the lower cover frame 20, and when the missile is launched, the missile firstly passes through the second special-shaped opening 28, sequentially penetrates through the non-woven fabric 40 and the film 30, and then flies away through the first special-shaped opening 18. Preferably, the film 30 includes a metal film, and the nonwoven fabric 40 is a high-strength nonwoven fabric.
The non-woven fabric 40, the film 30, the upper cover frame 10 and the lower cover frame 20 have the same outer diameter. The upper cover frame 10 and the film 30, the film 30 and the non-woven fabric 40, and the non-woven fabric 40 and the lower cover frame 20 are adhered through silica gel.
The film front cover suitable for the break-through launch canister further comprises a positioning pin 70, a first positioning pin hole 15 is formed in the upper cover frame 10, and a second positioning pin hole 25 is formed in the lower cover frame 20 at a position corresponding to the first positioning pin hole 15; the positioning pins 70 pass through the first positioning pin holes 15, the thin film 30, the non-woven fabric 40, and the second positioning pin holes 25 in sequence. Preferably, the number of the first positioning pin holes 15 is 2, and the first positioning pin holes are used for positioning when the front cover is assembled.
The upper cover frame 10 is riveted with the lower cover frame 20; a first countersunk unthreaded hole 13 is formed in the circumferential direction of the upper cover frame 10, and a second countersunk unthreaded hole 23 is formed in the position, corresponding to the first countersunk unthreaded hole 13, of the lower cover frame 20; the rivet 50 sequentially passes through the first countersunk hole 13, the film 30, the non-woven fabric 40, and the second countersunk hole 23. A plurality of first round holes 14 are uniformly formed in the circumferential direction of the upper cover frame 10; a plurality of second circular holes 24 are uniformly formed in the circumferential direction of the lower cover frame 20. Preferably, 12 first countersunk holes 13 are formed in the upper cover frame 10 and used for riveting during front cover assembly; 12 first round holes 14 are formed and are used for being fixed on a front flange of the launching tube during final assembly.
An annular groove 29 is formed in one side, close to the interior of the launching tube, of the lower cover frame 20; a seal ring 60 is provided inside the annular groove 29.
The cross section of the first shaped opening 18 comprises four third arcs 17 and four first arc openings; the two ends of the third arc line 17 are connected with the end parts of the adjacent first arc openings, and the two ends of the first arc openings are connected with the end parts of the adjacent third arc lines 17. The first arc-shaped opening comprises a first arc line 11, two second arc lines 12 and two first straight line segments 16; the two second arc lines 12 and the two first straight line segments 16 are symmetrically arranged, two ends of each first arc line 11 are connected with one end of the adjacent first straight line segment 16, the other end of each first straight line segment 16 is connected with one end of each second arc line 12, and the other end of each second arc line 12 is connected with the end of each third arc line 17.
The cross-section of the second shaped opening 28 comprises four sixth arcs 27 and four second arc openings; the ends of the sixth arc 27 are connected to the ends of the adjacent second arc openings, and the ends of the second arc openings are connected to the ends of the adjacent sixth arc 27. The second arcuate opening comprises a fourth arc 21, two fifth arcs 22 and two second straight segments 26; the two fifth arcs 22 and the two second straight-line segments 26 are symmetrically arranged, two ends of the fourth arc 21 are connected to one end of the adjacent second straight-line segment 26, the other end of the second straight-line segment 26 is connected to one end of the fifth arc 22, and the other end of the fifth arc 22 is connected to the end of the sixth arc 27.
The first special-shaped opening 18 and the second special-shaped opening 28 are enclosed by arc lines and straight line segments which are symmetrical relative to a central line, the openings are used for the missile body, the cable cover and the missile hanging to pass through when the missile body is launched, and 4 arc-shaped openings in the 45-degree direction enclosed by the arc lines and the straight line segments are used for the missile air rudder to pass through when the missile body is launched.
After the upper cover frame 10, the lower cover frame 20, the film 30 and the non-woven fabric 40 are positioned by the positioning pins 70, the two binding surfaces are bonded together by silica gel, and the parts are riveted together by the rivets 50. The lower cover frame 20 is then fitted with the upper seal ring 60 to form a membrane front cover. When the missile is launched, the missile penetrates through the second special-shaped opening 28 of the lower cover frame 20 to break through the adhesive layer formed by the film 30 and the non-woven fabric 40 and then flies away from the film front cover through the first special-shaped opening 18 of the upper cover frame 10.
In one embodiment of the present invention, the upper cover frame 10 is composed of 12 first countersunk holes 13, 12 first round holes 14, 2 first positioning pin holes 15, and a first special-shaped opening 18, wherein the first special-shaped opening 18 is defined by a third arc line 17, a second arc line 12, a first arc line 11, and a first straight line segment 16 which are symmetrical with respect to a central line; the lower cover frame 20 consists of 12 second countersunk unthreaded holes 23, 12 second round holes 24, 2 second positioning pin holes 25, a second special-shaped opening 28 and a weight-reducing slot 211, wherein the second special-shaped opening 28 is defined by a sixth arc line 27, a fifth arc line 22, a fourth arc line 21 and a second straight line segment 26 which are symmetrical relative to a central line.
In order to evaluate the safety and reliability of the film front cover, the process of breaking the film cover by the missile is simulated by using the impact test tool, and the expected design requirement is met.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (4)
1. The film front cover suitable for the burst-type launch canister is characterized by comprising an upper cover frame (10), a lower cover frame (20), a film (30) and non-woven fabrics (40);
the upper cover frame (10) is coaxially connected with the lower cover frame (20), one side, which is not connected with the upper cover frame (10), of the lower cover frame (20) is positioned in the launching tube, a first special-shaped opening (18) is formed in the upper cover frame (10), a second special-shaped opening (28) is formed in the lower cover frame (20), and the first special-shaped opening (18) and the second special-shaped opening (28) are identical in shape and overlapped in position;
a film (30) and a non-woven fabric (40) are arranged between the upper cover frame (10) and the lower cover frame (20), when the missile is launched, the missile firstly passes through the second special-shaped opening (28), sequentially breaks the non-woven fabric (40) and the film (30), and then flies away through the first special-shaped opening (18);
the upper cover frame (10) is adhered to the thin film (30), the thin film (30) is adhered to the non-woven fabric (40), and the non-woven fabric (40) is adhered to the lower cover frame (20) through silica gel;
the upper cover frame (10) is provided with a first positioning pin hole (15), and the lower cover frame (20) is provided with a second positioning pin hole (25) at a position corresponding to the first positioning pin hole (15);
the positioning pins (70) sequentially penetrate through the first positioning pin holes (15), the thin film (30), the non-woven fabric (40) and the second positioning pin holes (25);
the upper cover frame (10) is riveted with the lower cover frame (20);
a first countersunk smooth hole (13) is formed in the circumferential direction of the upper cover frame (10), and a second countersunk smooth hole (23) is formed in the position, corresponding to the first countersunk smooth hole (13), of the lower cover frame (20);
the rivet (50) sequentially penetrates through the first countersunk smooth hole (13), the film (30), the non-woven fabric (40) and the second countersunk smooth hole (23);
a plurality of first round holes (14) are uniformly formed in the circumferential direction of the upper cover frame (10);
a plurality of second round holes (24) are uniformly formed in the circumferential direction of the lower cover frame (20);
the cross section of the first shaped opening (18) comprises four third arcs (17) and four first arc-shaped openings;
two ends of the third arc line (17) are connected with the end parts of the adjacent first arc-shaped openings, and two ends of the first arc-shaped openings are connected with the end parts of the adjacent third arc lines (17);
the first arc-shaped opening comprises a first arc line (11), two second arc lines (12) and two first straight line segments (16);
two second pitch arc (12) and two first pitch arc (16) are the symmetry setting, and the one end of adjacent first pitch arc (16) is connected at the both ends of first pitch arc (11), and the one end of second pitch arc (12) is connected to the other end of first pitch arc (16), and the tip of third pitch arc (17) is connected to the other end of second pitch arc (12).
2. The film front cover for a break-through emitter tube of claim 1, wherein the non-woven fabric (40), the film (30), the upper cover frame (10) and the lower cover frame (20) have the same outer diameter.
3. The membrane front cover for a break-through launch canister according to claim 1, characterised in that the membrane (30) comprises a metal membrane.
4. The film front cover for a break-through launch canister according to claim 1, characterized in that the lower cover frame (20) is provided with an annular groove (29) on a side close to the inside of the launch canister;
and a sealing ring (60) is arranged in the annular groove (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110302181.3A CN113091506B (en) | 2021-03-22 | 2021-03-22 | Film front cover suitable for burst-type launch canister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110302181.3A CN113091506B (en) | 2021-03-22 | 2021-03-22 | Film front cover suitable for burst-type launch canister |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113091506A CN113091506A (en) | 2021-07-09 |
| CN113091506B true CN113091506B (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110302181.3A Active CN113091506B (en) | 2021-03-22 | 2021-03-22 | Film front cover suitable for burst-type launch canister |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115014125B (en) * | 2022-06-17 | 2023-07-04 | 北京新风航天装备有限公司 | Broken carbon fiber composite fragile film cover according to preset path |
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| US5652405A (en) * | 1996-06-04 | 1997-07-29 | Rakov; Mikhail A. | System for shooting using compressed gas |
| JPH11248395A (en) * | 1998-03-04 | 1999-09-14 | Yokohama Rubber Co Ltd:The | Structure of cover in canister for missile |
| RO131583A2 (en) * | 2015-06-08 | 2016-12-30 | Pincu Sfartz | Synchronous launcher |
| CN106839874A (en) * | 2017-04-14 | 2017-06-13 | 北京特种机械研究所 | One kind can high efficiency temperature controlled composite cylinder |
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2021
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