Gas closing device suitable for bullet launching of recoil-free gun

Abstract

The utility model belongs to the field of structural design of smoothbore projectile ammunition, and particularly relates to an air closing device suitable for projectile launching of a recoil-free cannon, which can be used for closing air between a projectile and the recoil-free cannon. The air closing device comprises a switching body, an air closing ring and a pressing plate, and the air closing ring is located between the switching body and the pressing plate. The gunpowder gas launched by the recoil-free gun and the ductility of the non-metal gas closing ring are ingeniously utilized, and the problem that the bullets are closed in the launch process of the smoothbore gun is solved. After the artillery is launched, the gas closing ring is cut off in the bullet squeezing-in process, and gunpowder gas expands the gas closing ring outwards to enable the gas closing ring to be tightly attached to the wall of a gun bore, so that the gas closing effect is achieved; the utility model has the advantages of simple structure, reliable function, convenience in processing and assembling, large popularization and application space and the like.

Description

Technical Field

[0001] This utility model belongs to the field of smoothbore cannon projectile structure design, specifically relating to a gas-sealing device suitable for firing projectiles from recoilless guns. Background Technology

[0002] The projectile gas-sealing device is an important component in the structural design of artillery-launched projectiles. Solving the projectile gas-sealing problem is directly related to the stability of the projectile's initial velocity and the muzzle disturbance. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The technical problem to be solved by this utility model is: how to provide a feasible and effective structural form that will not adversely affect other performance, fundamentally solve the problem of air tightness of the projectile in the gun barrel, achieve stable initial velocity of the projectile, and have no impact on the aerodynamic shape of the projectile after exiting the muzzle.

[0005] (II) Technical Solution

[0006] To solve the above technical problems, this utility model provides a gas-sealing device suitable for firing projectiles in recoilless guns. The gas-sealing device includes: a converter (2), a gas-sealing ring (3), and a pressure plate (4).

[0007] The gas-sealing device is located at the rear end of the ammunition projectile, and in the state before firing, it is located at the junction between the front barrel (1) and the rear barrel (5) of the launcher.

[0008] The adapter (2) is placed at the tail of the ammunition projectile; the adapter (2) has a stepped part at the end, and the joint between the front barrel (1) and the rear barrel (5) has an inner groove.

[0009] The air-sealing ring (3) is housed in the inner groove. The front end of the air-sealing ring (3) contacts the stepped part at the end of the adapter (2), and the rear end contacts the pressure plate (4).

[0010] The air-sealing ring (3) is fixedly installed between the adapter (2) and the pressure plate (4).

[0011] The outer diameter of the air-sealing ring (3) is set to be larger than the inner diameter of the front barrel (1) of the launcher, and an axial pre-groove is provided at the corresponding part of the front barrel (1) wall along the axial direction.

[0012] The launcher is a cannon.

[0013] Before firing, the projectile is loaded into the launcher. Since the outer diameter of the sealing ring (3) is larger than the inner diameter of the front barrel (1) of the launcher, the sealing ring (3) is stuck between the front barrel (1) and the rear barrel (5), ensuring the positioning of the projectile in the barrel.

[0014] During the launch process, the propellant gas propels the projectile forward, shearing the gas-sealing ring (3). The pre-formed groove on the gas-sealing ring (3) expands outward, causing the gas-sealing ring (3) to adhere tightly to the bore wall, thus achieving the purpose of gas sealing.

[0015] Among them, after the projectile leaves the muzzle, the sealing ring (3) is torn at the prefabrication groove and detaches from the projectile, without affecting the aerodynamic shape of the projectile.

[0016] The gas-sealing ring is used for projectile positioning before firing. After firing, the projectile is squeezed into the barrel, and the outer diameter portion of the gas-sealing ring that protrudes from the inner cavity of the barrel is sheared. The pre-made notch of the gas-sealing ring is opened by the propellant gas and tightly adheres to the barrel wall, thereby solving the problem of gas sealing during the projectile's movement in the barrel.

[0017] The gas-sealing device is used to seal the gas of projectiles on a breech-loading smoothbore cannon or recoilless gun firing platform.

[0018] The gas-sealing ring is a non-metallic gas-sealing ring. Before firing, the projectile is positioned in the barrel by the gas-sealing ring. After firing, the gas-sealing ring is reliably sheared, and the propellant gas enters the pre-formed groove of the gas-sealing ring to open the gas-sealing ring and ensure reliable gas sealing. After the projectile leaves the muzzle, when the external propellant gas leaks out, the gas-sealing ring can reliably break and detach from the projectile without affecting the aerodynamic shape of the projectile.

[0019] (III) Beneficial Effects

[0020] Compared with existing technologies, the air-sealing device of this invention can effectively solve the air-sealing problem of projectiles. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the position of the pre-launch gas-sealing device inside the barrel.

[0022] Figure 2 This is a schematic diagram of the gas-sealing device inside the barrel during the launch process. Detailed Implementation

[0023] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0024] To solve the above-mentioned technical problems, this utility model provides a gas-sealing device suitable for firing projectiles from recoilless guns, such as... Figure 1 As shown, the air-sealing device includes: a converter (2), an air-sealing ring (3), and a pressure plate (4);

[0025] The gas-sealing device is located at the rear end of the ammunition projectile, and in the state before firing, it is located at the junction between the front barrel (1) and the rear barrel (5) of the launcher.

[0026] The adapter (2) is placed at the tail of the ammunition projectile; the adapter (2) has a stepped part at the end, and the joint between the front barrel (1) and the rear barrel (5) has an inner groove.

[0027] The air-sealing ring (3) is housed in the inner groove. The front end of the air-sealing ring (3) contacts the stepped part at the end of the adapter (2), and the rear end contacts the pressure plate (4).

[0028] The air-sealing ring (3) is fixedly installed between the adapter (2) and the pressure plate (4).

[0029] The outer diameter of the air-sealing ring (3) is set to be larger than the inner diameter of the front barrel (1) of the launcher, and an axial pre-groove is provided at the corresponding part of the front barrel (1) wall along the axial direction.

[0030] The launcher is a cannon.

[0031] Before firing, the projectile is loaded into the launcher. Since the outer diameter of the sealing ring (3) is larger than the inner diameter of the front barrel (1) of the launcher, the sealing ring (3) is stuck between the front barrel (1) and the rear barrel (5), ensuring the positioning of the projectile in the barrel.

[0032] Among them, such as Figure 2 As shown, during the launch process, the propellant gas propels the projectile forward, shearing the gas-sealing ring (3). The pre-formed groove on the gas-sealing ring (3) expands outward, causing the gas-sealing ring (3) to adhere tightly to the bore wall, thus achieving the purpose of gas sealing.

[0033] Among them, after the projectile leaves the muzzle, the sealing ring (3) is torn at the prefabrication groove and detaches from the projectile, without affecting the aerodynamic shape of the projectile.

[0034] The gas-sealing ring is used for projectile positioning before firing. After firing, the projectile is squeezed into the barrel, and the outer diameter portion of the gas-sealing ring that protrudes from the inner cavity of the barrel is sheared. The pre-made notch of the gas-sealing ring is opened by the propellant gas and tightly adheres to the barrel wall, thereby solving the problem of gas sealing during the projectile's movement in the barrel.

[0035] The gas-sealing device is used to seal the gas of projectiles on a breech-loading smoothbore cannon or recoilless gun firing platform.

[0036] The gas-sealing ring is a non-metallic gas-sealing ring. Before firing, the projectile is positioned in the barrel by the gas-sealing ring. After firing, the gas-sealing ring is reliably sheared, and the propellant gas enters the pre-formed groove of the gas-sealing ring to open the gas-sealing ring and ensure reliable gas sealing. After the projectile leaves the muzzle, when the external propellant gas leaks out, the gas-sealing ring can reliably break and detach from the projectile without affecting the aerodynamic shape of the projectile.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A gas-sealing device suitable for firing projectiles from a recoilless rifle, characterized in that, The air-sealing device includes: a connector (2), an air-sealing ring (3), and a pressure plate (4); The gas-sealing device is located at the rear end of the ammunition projectile, and in the state before firing, it is located at the junction between the front barrel (1) and the rear barrel (5) of the launcher. The adapter (2) is placed at the tail of the ammunition projectile; the adapter (2) has a stepped part at the end, and the joint between the front barrel (1) and the rear barrel (5) has an inner groove. The air-sealing ring (3) is housed in the inner groove. The front end of the air-sealing ring (3) contacts the stepped part at the end of the adapter (2), and the rear end contacts the pressure plate (4).

2. The gas-sealing device for recoilless gun projectiles as described in claim 1, characterized in that, The air-sealing ring (3) is fixedly installed between the adapter (2) and the pressure plate (4).

3. The gas-sealing device for recoilless gun projectiles as described in claim 2, characterized in that, The outer diameter of the air-sealing ring (3) is set to be larger than the inner diameter of the front barrel (1) of the launcher, and an axial pre-groove is provided at the corresponding part of the front barrel (1) wall along the axial direction.

4. The gas-sealing device for recoilless gun projectiles as described in claim 1, characterized in that, The launcher is a cannon.

5. The gas-sealing device for recoilless gun projectiles as described in claim 3, characterized in that, Before firing, the projectile is loaded into the launcher. Since the outer diameter of the sealing ring (3) is larger than the inner diameter of the front barrel (1) of the launcher, the sealing ring (3) is stuck between the front barrel (1) and the rear barrel (5), ensuring the positioning of the projectile in the barrel.

6. The gas-sealing device for recoilless gun projectiles as described in claim 5, characterized in that, During the launch process, the propellant gas propels the projectile forward, shearing the gas-sealing ring (3). The pre-formed groove on the gas-sealing ring (3) expands outward, causing the gas-sealing ring (3) to adhere tightly to the bore wall, thus achieving the purpose of gas sealing.

7. The gas-sealing device for recoilless gun projectiles as described in claim 6, characterized in that, After the projectile exits the muzzle, the sealing ring (3) is torn at the precast groove and detaches from the projectile, without affecting the aerodynamic shape of the projectile.

8. The gas-sealing device for recoilless gun projectiles as described in claim 7, characterized in that, The gas-sealing ring is used for projectile positioning before firing. After firing, the projectile is squeezed into the barrel, and the outer diameter portion of the gas-sealing ring that protrudes from the inner cavity of the barrel is sheared. The pre-made notch of the gas-sealing ring is opened by the propellant gas and tightly adheres to the barrel wall, thereby solving the problem of gas sealing during the projectile's movement in the barrel.

9. The gas-sealing device for recoilless gun projectiles as described in claim 8, characterized in that, The gas-sealing device is used to seal the gas of projectiles on a breech-loading smoothbore cannon or recoilless gun firing platform.

10. The gas-sealing device for recoilless gun projectiles as described in claim 8, characterized in that, The gas-sealing ring is a non-metallic gas-sealing ring. Before firing, the projectile is positioned in the barrel by relying on the gas-sealing ring. After firing, the gas-sealing ring is reliably sheared, and the propellant gas enters the pre-formed groove of the gas-sealing ring to open the gas-sealing ring and ensure reliable gas sealing. After the projectile leaves the muzzle, when the external propellant gas leaks out, the gas-sealing ring can reliably break and detach from the projectile without affecting the aerodynamic shape of the projectile.

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