Bonding-free plane type bursting fragile cover structure convenient to disassemble

Abstract

The invention provides a plane type bursting fragile cover structure free of bonding and convenient to disassemble, and relates to the technical field of launching canister front covers. The structure is installed at an outlet of a launch canister and comprises an annular fixing piece, a first fixing piece, a second fixing piece and a third fixing piece, and the annular fixing piece is installed at the outlet of the launch canister; the foam cover is attached to the outlet of the launching cylinder, is detachably connected with the launching cylinder through the annular fixing piece, and blocks the launching cylinder; the weak area is arranged on the end face, close to the interior of the launching cylinder, of the foam cover. As a whole, the foam cover is light in weight, sufficient in strength, convenient to disassemble and assemble, excellent in weather resistance and stability and not prone to affecting the bullet.

Description

Technical Field

[0001] The present invention relates to the technical field of front covers of launch tubes, and in particular to a flat, breakable cover structure which is free of bonding and easy to disassemble. Background Art

[0002] As an important component of the missile launch system, the front cover of the launch tube should protect the internal launch device, have good weather resistance, a certain degree of sealing, be able to withstand a certain pressure, and be able to open quickly during launch without interfering with the flight of the missile body or damaging the conductor body.

[0003] The existing front cover of the launch tube is made of metal with prefabricated grooves on the metal. The projectile breaks through the metal to open the cover. The metal cover is heavy, does not achieve the effect of weight reduction, and requires a long time to open. Some use fiber fabric with prefabricated cracks and aluminum foil to make the front cover of the launch tube. The weak area made by the prefabricated cracks is subjected to a strong impact on the warhead when it breaks through, and the failure form of the film cover may not be consistent with the expected damage form, which may be a tearing form, and will scratch the projectile. The petal-type composite material structure is formed by resin bonding and curing to form the front cover of the launch tube. The resin is fluid and has many pores after curing, making it difficult to guarantee the quality of the finished product.

[0004] Therefore, there is an urgent need for a flat-type breakable cover structure that is light in weight, strong enough, easy to assemble and disassemble, has excellent weather resistance and stability, and is not likely to affect the warhead without bonding and is easy to disassemble. Summary of the invention

[0005] The purpose of the present invention is to provide a flat, breakable cover structure that is free of bonding and easy to disassemble, which solves the technical problem in the prior art that the front cover of the launch tube is heavy and easily affects the ejection of the projectile. The preferred technical solution among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a flat, easy-to-disassemble, breakable cover structure that is free of bonding and can be installed at the exit of a launch tube, comprising:

[0008] An annular fixing member, the annular fixing member is installed at the outlet of the launching tube;

[0009] A foam cover, which is attached to the outlet of the launch tube and is detachably connected and sealed on the launch tube through the annular fixing piece;

[0010] A weak area is provided on the end surface of the foam cover close to the inside of the launching tube.

[0011] Preferably, the weak area includes:

[0012] A right-angle cross groove, wherein the right-angle cross groove is opened at the center of the foam cover;

[0013] A right-angle annular groove is provided on the edge of the foam cover and is connected to the right-angle cross groove.

[0014] Preferably, the annular fixing member comprises:

[0015] A clamp, wherein the clamp is threadedly sleeved on the outside of the outlet of the launching tube;

[0016] A pressure ring is coaxially detachably connected to the clamp, and an edge of the foam cover abuts between the pressure ring and the clamp.

[0017] Preferably, the annular fixing member further comprises:

[0018] An annular groove is provided on the end surface of the clamp close to the pressure ring, and the edge of the foam cover covers the annular groove.

[0019] Preferably, the annular fixing member further comprises:

[0020] Screws, the clamp and the pressure ring are connected by a plurality of the screws.

[0021] Preferably, both axial end surfaces of the foam cover are planes.

[0022] Preferably, the foam cover is made of PM I foam material.

[0023] Preferably, the density of the foam cover is 30 kg / m 3 -200kg / m 3 .

[0024] In the technical solution provided by the present invention, a foam cover is used, and the foam cover is detachably connected and sealed at the outlet of the launch tube through an annular fixing piece. On the one hand, it can avoid the use of adhesive to bond the foam and wait for the time for the adhesive to dry. On the other hand, the adhesive factor is eliminated to enhance or weaken the opening pressure of the fragile cover; the foam cover has a certain pressure resistance, which can ensure the good sealing of the launch tube. At the same time, a weak area is set on the foam cover, which can be destroyed under a small impact momentum, without interfering with the flying of the projectile and damaging the projectile body. On the whole, the foam cover of the present application is light in weight, strong enough, easy to disassemble and assemble, has excellent weather resistance and stability, and is not easy to affect the warhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a cross-sectional schematic diagram of the launch tube and the foam cover of the present invention;

[0027] Figure 2 It is a schematic diagram of the weak area of ​​the present invention.

[0028] In the figure, 1, launching tube; 2, clamp; 3, pressure ring; 4, foam cover; 5, screw; 6, right-angle ring groove; 7, right-angle cross groove; 8, weak area. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0030] refer to Figure 1-2 The specific embodiment of the present invention provides a flat, easy-to-disassemble, breakable cover structure that is free of bonding and can be installed at the outlet of the launch tube 1, comprising:

[0031] An annular fixing member, the annular fixing member is installed at the outlet of the launch tube 1;

[0032] A foam cover 4 is attached to the outlet of the launch tube 1 and is detachably connected and sealed to the launch tube 1 through an annular fixing piece;

[0033] A weak area 8 is provided on the end surface of the foam cover 4 close to the inside of the launch tube 1 .

[0034] The existing front cover of the launch tube is made of metal with prefabricated grooves on the metal. The projectile breaks through the metal to open the cover. The metal cover is heavy, does not achieve the effect of weight reduction, and requires a long time to open. Some use fiber fabric with prefabricated cracks and aluminum foil to make the front cover of the launch tube. The weak area made by the prefabricated cracks is subjected to a strong impact on the warhead when it breaks through, and the failure form of the film cover may not be consistent with the expected damage form, which may be a tearing form, and will scratch the projectile. The petal-type composite material structure is formed by resin bonding and curing to form the front cover of the launch tube. The resin is fluid and has many pores after curing, making it difficult to guarantee the quality of the finished product. In the present application, a foam cover 4 is used, and the foam cover 4 is detachably connected and sealed at the outlet of the launch tube 1 through an annular fixing piece. On the one hand, it can avoid the use of adhesive to bond the foam and wait for the time for the adhesive to dry. On the other hand, eliminating the adhesive factor enhances or weakens the opening pressure of the fragile cover; the foam cover 4 has a certain pressure resistance, which can ensure the good sealing of the launch tube 1. At the same time, a weak area 8 is set on the foam cover 4, which can be destroyed under a small impact momentum, does not interfere with the flying of the projectile, and does not damage the projectile body. On the whole, the foam cover 4 of the present application is light in weight, strong enough, easy to disassemble and assemble, has excellent weather resistance and stability, and is not easy to affect the warhead.

[0035] Further optimization scheme, weak area 8 includes:

[0036] A right-angle cross groove 7, which is provided at the center of the foam cover 4;

[0037] The right-angled annular groove 6 is provided at the edge of the foam cover 4 and communicated with the right-angled cross groove 7 .

[0038] Under the impact of the projectile, the first places where the foam cover 4 is destroyed are the right-angle ring groove 6 and the right-angle cross groove 7. The wall thickness here is relatively small and can be opened under a smaller impact. Among them, the diameter of the right-angle ring groove 6 can be adjusted as needed to achieve a diameter that does not interfere with the front cover (foam cover 4) when the customer's projectile comes out of the tube. It is not limited to the cross groove. If you want to increase the number of petals to be destroyed, you can adjust it accordingly. Of course, you can also change the angle of the groove, but it is relatively stable when the groove is at a right angle. The width and depth of the right-angle ring groove 6, the width and depth of the right-angle cross groove 7 and the foam density are controlled to meet the opening pressure requirements of different customers. It has strong designability and short processing time. The structural fragile cover is lightweight and high-strength, easy to disassemble and assemble, simple to operate, quick to respond, low maintenance cost and excellent weather resistance.

[0039] Further optimizing the scheme, the annular fixing includes:

[0040] A clamp 2, wherein the clamp 2 is threadedly sleeved on the outside of the outlet of the launch tube 1;

[0041] The pressing ring 3 is detachably connected to the clamp 2 coaxially, and the edge of the foam cover 4 abuts between the pressing ring 3 and the clamp 2.

[0042] The clamp 2 is threadedly sleeved on the outside of the outlet of the launch tube 1, and thread glue is applied to the threaded connection to make it firmly connected.

[0043] Further optimizing the solution, the annular fixing member also includes:

[0044] An annular groove is provided on the end surface of the clamp 2 close to the pressure ring 3, and the edge of the foam cover 4 covers the annular groove.

[0045] The main purpose of setting the annular groove is to increase the air tightness. When the edge of the foam cover 4 covers the annular groove, the annular groove is squeezed onto the annular groove by the pressure ring 3, thereby ensuring the overall air tightness of the launch tube 1.

[0046] Further optimizing the solution, the annular fixing member also includes:

[0047] Screws 5 , the clamp 2 and the pressure ring 3 are connected by a plurality of screws 5 .

[0048] The clamp 2 and the pressure ring 3 are detachably connected by screws 5, which can avoid using adhesive to bond the foam and waiting for the adhesive to dry, thereby eliminating the adhesive factor to enhance or weaken the opening pressure of the fragile cover.

[0049] According to a further optimized solution, both end surfaces of the foam cover 4 in the axial direction are planes.

[0050] The foam cover 4 is flat, and the destruction mode is relatively stable, and the fragments will not scratch the projectile body after the explosion.

[0051] Further optimization scheme, the foam cover 4 is made of PM I foam material; the density of the foam cover 4 is 30kg / m 3 -200kg / m 3 .

[0052] The thickness of the foam cover 4 can be adjusted according to the demand, and can ensure good air tightness while being destroyed under a small impact momentum. The foam cover 4 is planar, and the destruction mode is relatively stable, and the fragments will not scratch the projectile after the explosion.

[0053] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. used herein to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0054] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flat, breakable cover structure that is free of bonding and easy to disassemble, installed at the outlet of a launch tube (1), characterized in that: include: an annular fixing member, the annular fixing member being installed at the outlet of the launching tube (1); A foam cover (4), the foam cover (4) being attached to the outlet of the launch tube (1) and being detachably connected and sealed on the launch tube (1) via the annular fixing piece; A weak area (8), wherein the weak area (8) is arranged on the end surface of the foam cover (4) close to the inside of the launch tube (1).

2. The bonding-free, easy-to-disassemble, flat-type breakable cover structure according to claim 1, characterized in that: The weak area (8) comprises: A right-angle cross groove (7), wherein the right-angle cross groove (7) is provided at the center of the foam cover (4); A right-angled annular groove (6), wherein the right-angled annular groove (6) is provided on the edge of the foam cover (4) and is connected to the right-angled cross groove (7).

3. The bonding-free, easy-to-disassemble, flat-type breakable cover structure according to claim 1, characterized in that: The annular fixing member comprises: A clamp (2), the clamp (2) being threadedly sleeved on the outside of the outlet of the launching tube (1); A pressure ring (3) is coaxially detachably connected to the clamp (2), and an edge of the foam cover (4) abuts between the pressure ring (3) and the clamp (2).

4. The bonding-free, easy-to-disassemble, flat-type breakable cover structure according to claim 3, characterized in that: The annular fixing member also includes: An annular groove is provided on the end surface of the clamp (2) close to the pressure ring (3), and the edge of the foam cover (4) covers the annular groove.

5. The bonding-free, easy-to-disassemble, flat-type breakable cap structure according to claim 3, characterized in that: The annular fixing member also includes: Screws (5), the clamp (2) and the pressure ring (3) are connected via a plurality of screws (5).

6. The bonding-free, easy-to-disassemble, flat-type breakable cap structure according to claim 1, characterized in that: The two axial end surfaces of the foam cover (4) are respectively planes.

7. The bonding-free, easy-to-disassemble, flat-type breakable cover structure according to claim 6, characterized in that: The foam cover (4) is made of PMI foam material.

8. The bonding-free, easy-to-disassemble, flat-type breakable cap structure according to claim 7, characterized in that: The density of the foam cover (4) is 30 kg / m 3 -200kg / m 3 .

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