A mortar shell copper seat drop-off tail structure and a mortar shell composed of the same

Abstract

The utility model provides a mortar bomb anti -copper base falls off and falls tail structure, and the tail includes cylinder section and medicine chamber section, and the basic medicine pipe is arranged in the medicine chamber section of tail, and the basic medicine pipe includes paper tube and copper base, is equipped with the firing pin in the copper base, is equipped with the powder above the firing pin, still be equipped with the cross section is the arc -shaped resistance groove of the medicine chamber section inner wall department on the tail, and the resistance groove is in the contact position of copper base on the medicine chamber section, and the powder above is ignited after the firing pin is fired, and the copper base is under the action of the powder explosion force and is in the resistance groove position expansion deformation, and the copper base after deformation is clamped and is established in the medicine chamber section resistance groove. The utility model discloses simple structure, reasonable in design can effectively overcome the problem of being sheared because of the copper base of powder force effect after launching.

Description

Technical Field

[0001] This utility model relates to the field of weapon and equipment manufacturing technology, specifically to a mortar shell tail structure that prevents the copper base from falling off. Background Technology

[0002] Conventional mortar shells generally consist of a fuse, shell body, tail section, and propellant charge. The propellant charge includes a basic propellant tube and an additional propellant charge (see...). Figure 1 The fuse is the component that detonates the entire projectile and provides the energy for detonation; the warhead is the functional component that causes the entire projectile to kill; the tail is the stabilizing device during the flight of the projectile and also the structural component for installing the propellant charge; the propellant charge is the flight propulsion of the projectile. The basic propellant tube is inserted into the propellant chamber hole in the center of the tail, and the additional propellant charge is fixed in the outer cylindrical part of the tail.

[0003] The firing principle of a mortar shell is as follows: the projectile slides freely down the barrel from the muzzle, the firing pin strikes the primer on the basic propellant tube, igniting the propellant inside the tube. The propellant pressure bursts through the tube, igniting the additional propellant, and simultaneously generating high-temperature, high-pressure gas. This propellant gas propels the projectile at a certain speed away from the muzzle. After the projectile leaves the muzzle, to ensure the reliability and stability of continuous flight, the basic propellant tube must not detach from the propellant chamber in the center of the tail of the projectile.

[0004] The existing basic medicine tube consists of a copper base and a paper tube (see...) Figure 2 The firing pin is encased in a copper base, with black powder above it. Upon firing, the firing pin is ignited, setting the black powder ablaze. Under the force of the propellant, the copper base deforms and expands, fitting snugly against the diameter of the tail chamber. To ensure the main propellant tube does not detach from the tail chamber, a deflector groove is designed at the tail chamber (see...). Figure 3 After the basic propellant tube is loaded into the tail chamber of the missile, the position of the anti-recoil groove is not higher than the height of the copper base of the basic propellant tube. After firing, the copper base deforms and expands under the action of the propellant force, and the copper base located at the anti-recoil groove is squeezed and deformed into the anti-recoil groove, which can prevent the basic propellant tube from falling off in the tail chamber of the missile.

[0005] The existing anti-rejection groove design is a right-angle groove (see...) Figure 4 The copper base, due to its shape, frequently breaks and falls into the gun barrel during product use. Analysis revealed that the breakage was caused by stress concentration in the right-angle recoil groove. After firing, the copper base deforms and expands under the force of the propellant. At a certain moment, when stress concentration occurs, the copper base is sheared (see...). Figure 5 ). Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a mortar shell tail structure that prevents the copper base from detaching. The structure is simple and reasonably designed, and can effectively overcome the problem of the copper base being sheared by the force of the propellant after firing.

[0007] The technical solution of this utility model is as follows: a mortar shell tail structure to prevent copper base detachment. The tail includes a cylindrical section and a chamber section. A basic propellant tube is set in the chamber section of the tail. The basic propellant tube includes a paper tube and a copper base. A firing pin is provided inside the copper base, and gunpowder is provided above the firing pin. The inner wall of the chamber section on the tail is also provided with a recoil groove with an arc cross-section. The recoil groove is located on the chamber section and in contact with the copper base. When the firing pin is fired, the gunpowder above it is ignited. Under the action of the explosive force of the gunpowder, the copper base expands and deforms at the recoil groove position. The deformed copper base is stuck in the recoil groove of the chamber section.

[0008] Furthermore, the resisting groove is an annular groove.

[0009] Furthermore, the resisting groove is a plurality of staggered strip grooves.

[0010] Furthermore, the resisting groove is a plurality of evenly distributed concave holes.

[0011] A mortar shell, from top to bottom, includes a fuse, a shell body, a propellant charge, and the aforementioned mortar shell anti-copper base detachment tail structure. The propellant charge includes a basic propellant tube and an additional propellant charge. The tail includes a cylindrical section and a chamber section. The basic propellant tube is located in the chamber section of the tail, while the additional propellant charge is secured in the outer cylindrical section of the tail.

[0012] Compared with the prior art, the advantages of this utility model are as follows: This utility model has a simple structure and reasonable design, which can effectively overcome the phenomenon of copper seat breaking and falling into the gun barrel due to stress concentration, and ensure that the copper seat can be tightly locked into the anti-recoil groove after firing due to deformation and expansion under the action of gunpowder force. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a mortar shell. Figure 2 This is a schematic diagram of the basic drug delivery system. Figure 3 This is a schematic diagram of the mortar shell tail structure designed to prevent the copper base from detaching in the existing technology. Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the mortar shell tail structure designed to prevent the copper base from detaching. Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B.

[0014] Reference numerals: 1-Copper base, 2-Paper tube, 3-Cavity section, 4-Recoil groove, 5-Stress concentration point, 6-Arc-shaped recoil groove, 7-Fuse, 8-Warhead, 9-Additional charge, 10-Basic propellant tube, 11-Tail of the projectile. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings, but this is not intended to limit the scope of protection of the present invention.

[0016] Example 1: See appendix Figure 5 and attached Figure 6 A mortar shell tail structure for preventing copper base detachment is disclosed. The tail section includes a cylindrical section and a chamber section. A basic propellant tube is located in the chamber section of the tail section. The basic propellant tube includes a paper tube and a copper base. A firing pin (not shown in the figure) is provided inside the copper base, and gunpowder (not shown in the figure) is provided above the firing pin. The key feature is that a recoil groove with an arc-shaped cross-section is provided on the inner wall of the chamber section of the tail section. The recoil groove is located on the chamber section and contacts the copper base. When the firing pin is fired, the gunpowder above it is ignited. Under the action of the explosive force of the gunpowder, the copper base expands and deforms at the recoil groove position. The deformed copper base is then locked in the recoil groove of the chamber section.

[0017] The deflection groove is an annular groove. There is at least one annular groove. After firing, the copper base deforms and expands under the force of the propellant, and the copper base is squeezed and deformed into the annular groove. The deformed copper base and the annular groove can prevent the basic propellant tube from falling off in the tail chamber of the projectile.

[0018] Example 2: As another structural form, the deflection groove can also be designed as multiple staggered strip grooves. The copper base is squeezed and deformed into the multiple staggered strip grooves, and the deformed copper base and the multiple staggered strip grooves can prevent the basic propellant tube from falling off in the tail chamber of the projectile.

[0019] Example 3: As another structural form, the deflection groove can also be designed as multiple evenly distributed recesses. The copper base is squeezed and deformed into the multiple evenly distributed recesses, and the deformed copper base and the multiple evenly distributed recesses can prevent the basic propellant tube from falling off in the tail chamber of the projectile.

[0020] A mortar shell, from top to bottom, includes a fuse, a shell body, a propellant charge, and the aforementioned mortar shell anti-copper base detachment tail structure. The propellant charge includes a basic propellant tube and an additional propellant charge. The tail includes a cylindrical section and a chamber section. The basic propellant tube is located in the chamber section of the tail, while the additional propellant charge is secured in the outer cylindrical section of the tail.

Claims

1. A mortar shell tail structure to prevent copper base detachment, the tail comprising a cylindrical section and a chamber section, a basic propellant tube disposed in the chamber section of the tail, the basic propellant tube comprising a paper tube and a copper base, a firing pin disposed within the copper base, and gunpowder disposed above the firing pin; characterized in that: The inner wall of the chamber section on the tail of the projectile is also provided with a deflection groove with an arc cross-section. The deflection groove is located on the chamber section and in contact with the copper base. When the firing pin is fired, the gunpowder above it is ignited. Under the action of the explosive force of the gunpowder, the copper base expands and deforms at the deflection groove position. The deformed copper base is stuck in the deflection groove of the chamber section.

2. The mortar shell anti-copper base detachment tail structure as described in claim 1, characterized in that: The retraction groove is an annular groove.

3. The mortar shell anti-copper base detachment tail structure as described in claim 2, characterized in that: The resisting groove consists of multiple staggered strip grooves.

4. The mortar shell anti-copper base detachment tail structure as described in claim 1, characterized in that: The resist groove consists of multiple evenly distributed concave holes.

5. A mortar shell, characterized in that: From top to bottom, it includes a fuse, a projectile body, a propellant charge, and a mortar shell tail with a copper base detachment structure as described in any one of claims 1 to 4. The propellant charge includes a basic propellant tube and an additional propellant charge. The tail includes a cylindrical section and a chamber section. The basic propellant tube is located in the chamber section of the tail, while the additional propellant charge is secured in the outer cylindrical section of the tail.

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