Mechanism for controlling fragments to fly off through training bomb

Abstract

The utility model discloses a training bomb fragment scattering control mechanism which comprises a bomb bottom structure, the bomb bottom structure is of a cylindrical structure and is provided with a first annular face, a second annular face, a third annular face, a fourth annular face, a fifth annular face and a sixth annular face, the middle of the bomb bottom structure is of a through hole structure, and the through hole structure is provided with a first through hole and a second through hole. The first through hole and the second through hole are communicated with each other, the diameter of the first through hole is larger than that of the second through hole, the diameter of the second annular face is larger than that of the first annular face, the diameters of the first annular face, the fourth annular face and the sixth annular face are the same, the bullet bottom structure is made of high-strength nylon materials, and the width of a conduction band of the bullet bottom structure is 7 mm. The yield strength of the material is 110 MPa, and the shear strength of the material is 44.3 MPa. The beneficial effects of the utility model are that: the problem that the blank ammunition is reliably dispersed when going out of the muzzle and the dispersed fragments fall within the range in front of the muzzle is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of blank training bullet fragment scattering control, in particular to a training bullet fragment scattering control mechanism. Background Art

[0002] Blank ammunition is an indispensable piece of equipment in military training, allowing troops to practice shooting skills in an environment close to actual combat while also reducing ammunition consumption and safety risks. To improve the ammunition system for anti-aircraft artillery shooting training for air defense forces, this system allows for both drill instruction and shooting training in small areas to understand equipment performance, as well as shooting training in large outdoor areas to familiarize oneself with ballistic performance. This system also facilitates maintenance and inspection of artillery equipment within military bases, improving equipment readiness. This system provides troops with a means of tiered training, ensuring the rapid development of combat effectiveness while also avoiding the difficult issue of addressing the safety risks of unexploded ordnance in the impact zone.

[0003] The blank training round consists of a prefabricated slotted plastic jacket with a wire-cut, shatter-resistant metal casing, prefabricated scattering fragments, a base, and an aluminum alloy drawbar. This ensures the projectile's firing strength and reliable projectile fragmentation upon exiting the muzzle. The projectile's mechanism of action is that upon firing from the barrel, the guide band squeezes into the rifling. Gas pressure and centrifugal force cause the projectile to fragment upon exiting the muzzle. Air resistance forces the fragments to settle within a certain area in front of the muzzle, meeting the requirements for small-field firing training and artillery inspection and maintenance.

[0004] Therefore, in order to ensure that the blank training projectile is reliably dispersed when it leaves the muzzle, a base structure needs to be designed. When the guide belt on the base squeezes into the rifling, it gives the projectile a certain rotation speed to obtain rotational centrifugal force to meet safety requirements. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and to provide a training bullet fragment dispersion mechanism that ensures that blank training bullets are reliably dispersed when exiting a gun muzzle.

[0006] The purpose of the utility model is achieved through the following technical solutions: a training bullet fragment dispersion control mechanism, comprising a bullet base structure, the bullet base structure being a cylindrical structure and provided with a first annular surface, a second annular surface, a third annular surface, a fourth annular surface, a fifth annular surface, and a sixth annular surface, the middle portion of the bullet base structure being a through hole structure, and the through hole structure being provided with a first through hole and a second through hole;

[0007] The first through hole and the second through hole are interconnected, and the diameter of the first through hole is larger than the diameter of the second through hole, the diameter of the second annular surface is larger than the diameter of the first annular surface, and the diameters of the first annular surface, the fourth annular surface and the sixth annular surface are the same. The bottom structure of the spring is made of high-strength nylon material, the guide band width of the bottom structure of the spring is 7 mm, the material yield strength is 110 MPa, and the shear strength is 44.3 MPa.

[0008] In the fragment dispersion control mechanism of the training bullet of the present invention, the cross-section tangential tensile strength of the bullet bottom structure is 367.5 MPa, and the yield strength of the surface material of the first through hole and the second through hole in the bullet bottom structure is 400 MPa.

[0009] In the fragment dispersion control mechanism of the training bullet of the present invention, the third annular surface and the fifth annular surface are arc-shaped grooves, the length of the bullet bottom structure is 38 mm, and the diameter of the second annular surface is 36.95 mm.

[0010] In the fragment dispersion control mechanism of the training bullet of the present invention, the diameters of the first annular surface, the fourth annular surface and the sixth annular surface are 35 mm, and the structure of the sixth annular surface is beveled.

[0011] The utility model has the following advantages:

[0012] 1. The present invention includes a bullet bottom structure, which is a cylindrical structure and is provided with a first annular surface, a second annular surface, a third annular surface, a fourth annular surface, a fifth annular surface and a sixth annular surface. The middle portion of the bullet bottom structure is a through hole structure, and the through hole structure is provided with a first through hole and a second through hole.

[0013] The first through hole and the second through hole are interconnected, and the diameter of the first through hole is larger than the diameter of the second through hole, the diameter of the second annular surface is larger than the diameter of the first annular surface, and the diameters of the first annular surface, the fourth annular surface and the sixth annular surface are the same. The bottom structure of the bullet is made of high-strength nylon material. The guide belt width of the bottom structure of the bullet is 7mm, the material yield strength is 110MPa, and the shear strength is 44.3MP, which solves the problem of reliable dispersion of blank bullets when they exit the muzzle and the problem of scattered fragments falling in the area in front of the muzzle.

[0014] The utility model selects high-strength nylon as the base material, the width of the base guide band is 7mm, the material yield strength is 110MPa, and the shear strength is about 44.3MPa, which meets the compressive strength requirements. The performance of the base outside the bore meets the requirements.

[0015] The tangential tensile strength of the cross-section of the bullet base in the bore of the utility model is 367.5 MPa, and the yield strength of the bullet body material is 400 MPa. According to the second strength theory, the bullet base meets the performance requirements in the bore. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] In the figure, there is a bullet bottom structure 1, a first annular surface 2, a second annular surface 3, a third annular surface 4, a fourth annular surface 5, a fifth annular surface 6, a sixth annular surface 7, a first through hole 8, and a second through hole 9. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings. The scope of protection of the present invention is not limited to the following:

[0020] like Figure 1~Figure 2 As shown, a fragment dispersion control mechanism for a training projectile includes a projectile base structure 1. The projectile base structure 1 is a cylindrical structure and has a first annular surface 2, a second annular surface 3, a third annular surface 4, a fourth annular surface 5, a fifth annular surface 6, and a sixth annular surface 7. The middle portion of the projectile base structure 1 is a through-hole structure, and the through-hole structure has a first through-hole 8 and a second through-hole 9.

[0021] The first through hole 8 and the second through hole 9 are interconnected, and the diameter of the first through hole 8 is larger than the diameter of the second through hole 9, the diameter of the second annular surface 3 is larger than the diameter of the first annular surface 2, and the diameters of the first annular surface 2, the fourth annular surface 5 and the sixth annular surface 7 are the same. The bottom structure 1 is made of high-strength nylon material, the guide band width of the bottom structure 1 is 7 mm, the material yield strength is 110 MPa, and the shear strength is 44.3 MPa.

[0022] In this embodiment, the cross-sectional tangential tensile strength of the projectile bottom structure 1 is 367.5 MPa, and the yield strength of the surface material of the first through hole 8 and the second through hole 9 in the projectile bottom structure 1 is 400 MPa.

[0023] In this embodiment, the third annular surface 4 and the fifth annular surface 6 are arc-shaped grooves, the length of the bullet bottom structure 1 is 38 mm, and the diameter of the second annular surface 3 is 36.95 mm.

[0024] In this embodiment, the diameters of the first annular surface 2 , the fourth annular surface 5 and the sixth annular surface 6 are 35 mm, and the sixth annular surface 7 is beveled.

[0025] The working principle of the present utility model is as follows: the projectile must meet the requirements of launch intensity and maximum flight distance. Therefore, the restraining force of the base structure on the metal projectile cannot be too small. If the restraining force is too small, the projectile will scatter prematurely in the chamber and the muzzle device will be easily damaged when it exits the muzzle. The restraining force should not be too large either. If it is too large, the projectile will not be reliably dispersed when it exits the muzzle and will fly out of the safe distance of 250m.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fragment dispersion control mechanism for a training projectile, characterized by: The bullet bottom structure is a cylindrical structure and is provided with a first annular surface, a second annular surface, a third annular surface, a fourth annular surface, a fifth annular surface and a sixth annular surface. The middle portion of the bullet bottom structure is a through hole structure, and the through hole structure is provided with a first through hole and a second through hole. The first through hole and the second through hole are interconnected, and the diameter of the first through hole is larger than the diameter of the second through hole, the diameter of the second annular surface is larger than the diameter of the first annular surface, and the diameters of the first annular surface, the fourth annular surface and the sixth annular surface are the same. The bottom structure of the spring is made of high-strength nylon material, the guide band width of the bottom structure of the spring is 7 mm, the material yield strength is 110 MPa, and the shear strength is 44.3 MPa.

2. A fragment dispersion control mechanism for a training bullet according to claim 1, characterized in that: The cross-sectional tangential tensile strength of the projectile bottom structure is 367.5 MPa, and the yield strength of the surface material of the first through hole and the second through hole in the projectile bottom structure is 400 MPa.

3. The fragment dispersion control mechanism for a training bullet according to claim 1, characterized in that: The third annular surface and the fifth annular surface are arc-shaped grooves, the length of the bullet bottom structure is 38 mm, and the diameter of the second annular surface is 36.95 mm.

4. The fragment dispersion control mechanism for a training bullet according to claim 1, characterized in that: The diameters of the first annular surface, the fourth annular surface and the sixth annular surface are 35 mm, and the structure of the sixth annular surface is beveled.

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