A mortar simulation projectile

Abstract

The present invention discloses a mortar simulation projectile, which includes a projectile body, a tail tube arranged at the tail of the projectile body, and tail fins arranged at the tail of the tail tube. Using the blank cartridges for rifles / machine guns stored in large quantities by troops as the basic charge tube, by arranging a driving member similar to a piston and a relatively enclosed space in the tail tube, the charge of the blank cartridge can be fully burned. Under the action of high-pressure gas, the driving member moves relative to the tail tube. Since the rear end of the driving member contacts the firing pin base and cannot move backward, it instead pushes the tail tube and the projectile body in the direction of the muzzle. Just like punting a boat, using this "pole" of the driving member to punt the "boat" of the projectile body, giving it a certain initial velocity, and finally shooting the simulation projectile out of the muzzle. It can effectively improve the quality of mortar loading training and also conduct psychological training for gunners.

Description

Technical Field

[0001] The present invention relates to a mortar simulation projectile, belonging to the field of military training. Background Art

[0002] The mortar is the main accompanying firepower of infantry and is widely equipped in the troops. Due to the special way of loading the projectile from the muzzle of the mortar, for many years, when conducting live loading training, soldiers have to tie a rope to the simulation projectile, and after loading, use the rope to pull the projectile out of the barrel. Repeating this process has caused the movements to be distorted and the training effect to be poor. Summary of the Invention

[0003] The present invention provides a mortar simulation projectile, which solves the problems disclosed in the background art.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A mortar simulation projectile includes a projectile body, a tail tube provided at the tail of the projectile body, and tail fins provided at the tail of the tail tube. A first cavity is provided in the tail tube, an exhaust port communicating with the first cavity is provided on the tail tube, and a hollow driving member that can telescopically extend from its own rear end is slidably connected in the first cavity. A basic charge tube is loaded at the rear end of the inner cavity of the hollow driving member. The gas generated by the firing of the basic charge tube causes the space between the front end of the hollow driving member and the front end of the first cavity to expand, driving the hollow driving member to move relative in the first cavity. When the relative movement reaches a preset position, the gas is discharged from the exhaust port.

[0006] The basic charge tube is a blank cartridge for a rifle or a machine gun (hereinafter referred to as a rifle / machine gun blank cartridge).

[0007] A second restraint is detachably connected to the rear end of the hollow driving member. The second restraint is used to restrain the basic charge tube in the inner cavity of the hollow driving member, and a firing hole for passing a firing pin and communicating with the inner cavity of the hollow driving member is provided on the second restraint.

[0008] A reset member is sleeved on the hollow driving member to reset the hollow driving member after relative movement in the first cavity.

[0009] The exhaust port is located on the side wall of the tail tube. When the hollow driving member moves relative in the first cavity to a preset position, the exhaust port communicates with the space between the front end of the hollow driving member and the front end of the first cavity.

[0010] A limiting member is provided on the outer wall of the hollow driving member. When the hollow driving member moves relative in the first cavity to a preset position, the limiting member abuts against the rear end face of the tail tube.

[0011] A mortar simulation projectile, comprising a projectile body, a tail tube provided at the tail of the projectile body, and tail fins provided at the tail of the tail tube. A second cavity is provided inside the tail tube, and an exhaust port communicating with the second cavity is provided on the tail tube. The rear end of the second cavity is used for loading a basic cartridge case. The gas generated by the firing of the basic cartridge case is discharged through the second cavity and the exhaust port in sequence.

[0012] The basic cartridge case is a blank cartridge for a rifle / machine gun.

[0013] A third restraint is detachably connected to the rear end of the second cavity. The third restraint is used to restrain the basic cartridge case in the second cavity. A firing hole for passing a firing pin and communicating with the second cavity is provided on the third restraint.

[0014] The second cavity includes an inner cavity and an outer cavity. The rear end of the inner cavity is used for loading the basic cartridge case. The front end of the inner cavity communicates with the outer cavity, and the outer cavity communicates with the exhaust port.

[0015] The beneficial effects achieved by the present invention are as follows: 1. In the present invention, the basic cartridge case is loaded into the tail tube at the rear end of the projectile body. The gas generated after the firing of the basic cartridge case is used to drive the simulation projectile out of the muzzle, and at the same time, sound and light are emitted, which can effectively improve the quality of mortar loading training and can also conduct psychological training for gunners; 2. The present invention uses a blank cartridge for a rifle / machine gun as the basic cartridge case. The blank cartridges for rifles / machine guns have a large storage capacity in the troops, low cost, and are safe and reliable to use; 3. In view of the fact that the blank cartridges for rifles / machine guns have a small amount of ammunition, less generated gas, and insufficient driving force, the present invention designs two pneumatic structures for mortars of different calibers. One is that the gas expands in the tail tube to drive the hollow driving member to move backward in the first cavity. Since the rear end of the driving member is in contact with the firing pin base and cannot move backward, it will instead push the projectile body in the direction of the muzzle. Just like punting a boat, using the driving member as a pole to punt the projectile body as a boat, giving it a certain initial velocity, and finally shooting the simulation projectile out of the muzzle. This is applicable to both small-caliber (60mm) mortars and medium and large-caliber (82mm, 100mm, 120mm) mortars; the other is to directly discharge the gas into the gun chamber, and the gas accumulated in the gun chamber expands to directly push the simulation projectile out of the muzzle. This method has a simple structure but is only applicable to small-caliber mortars; 4. In the present invention, due to the problem of the powder ratio of the blank cartridge, a certain amount of residual gunpowder will be carried in the high-temperature and high-pressure gas generated after firing. When the gas expands in the space between the front end of the hollow driving member and the front end of the first cavity, or in the process of passing through the channel formed by the communication of the inner cavity and the outer cavity, the residual gunpowder can be fully burned to maximize the generated gas; 5. In the present invention, a detachable restraint is provided at the loading end of the basic cartridge case. The basic cartridge case is restrained at the loading end through the restraint to prevent the primer shell from falling into the gun tube. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the first structure of the mortar simulation projectile;

[0017] Figure 2 is Figure 1 a schematic diagram of the launch dynamics of a medium mortar simulation projectile;

[0018] Figure 3 is a schematic diagram of the structure of the fin;

[0019] Figure 4 is the second schematic diagram of the structure of the mortar simulation projectile;

[0020] Figure 5 is a schematic diagram of the fin structure with the exhaust port opened at the rear end of the tail pipe.

[0021] Reference numerals: 1, fuse; 2, gas seal ring; 3, projectile body; 4, tail pipe; 5, hollow driving member; 6, limiting member; 7, reset member; 8, exhaust port; 9, basic charge tube; 10, fin; 11, first restraint member; 12, second restraint member; 13, inner cavity; 14, third restraint member; 15, outer cavity. Detailed implementation manners

[0022] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0023] As Figure 1 shown, a mortar simulation projectile includes a projectile body 3, a tail pipe 4 connected to the tail of the projectile body 3, and a fin 10 connected to the tail of the tail pipe 4. A first cavity is opened in the tail pipe 4. The first cavity can be a cylindrical cavity. An exhaust port 8 communicating with the first cavity is opened on the tail pipe 4. A hollow driving member 5 that can extend and retract from its own rear end is slidably connected in the first cavity. The front side wall of the hollow driving member 5 is attached to the inner wall of the first cavity. The basic charge tube 9 is loaded at the rear end of the inner cavity of the hollow driving member 5. The gas generated by the firing of the basic charge tube 9 causes the space between the front end of the hollow driving member 5 and the front end of the first cavity to expand, driving the hollow driving member 5 to move relatively in the first cavity. When the relative movement reaches a preset position, the gas is discharged from the exhaust port 8.

[0024] For the above-mentioned mortar simulation projectile, the basic charge tube 9 is loaded at the rear end of the hollow driving member 5, and the simulation projectile is fired out of the muzzle through the basic charge tube 9, and emits sound and light, which can effectively improve the mortar loading training and can also conduct psychological training for the gunner; the pneumatic structure of the above-mentioned mortar simulation projectile is that the gas expands in the tail pipe 4, so that the space between the front end of the hollow driving member 5 and the front end of the first cavity increases, thereby driving the hollow driving member 5 to move relatively in the first cavity, generating a "rowing boat" effect and driving the simulation projectile out of the muzzle. Such a simulation projectile is suitable for both small-caliber mortars and large-caliber mortars. It is a general mortar simulation projectile.

[0025] As an embodiment of the present invention, the above mortar simulation projectile includes a fuse 1, a projectile body 3, a tail tube 4, and fins 10 that are sequentially connected from front to back; among them, the fuse 1 is a hard solid that can withstand repeated impacts with the ground. The fuse 1 can be connected to the projectile body 3 by threads or can be integrated with the projectile body 3; a circumferential gas seal ring 2 is provided on the projectile body 3 to increase the thrust of the gas on the simulation projectile; the tail tube 4 can be threadedly connected to the projectile body 3, and the rear end of the tail tube 4 is connected to the fins 10.

[0026] In the above mortar simulation projectile, the basic cartridge case 9 uses a blank cartridge for a rifle / machine gun. The blank cartridge for a rifle / machine gun has a large storage capacity in the troops, low cost, and is safe and reliable to use; in order to cooperate with the blank cartridge for a rifle / machine gun, the rear end of the inner cavity of the hollow driving member 5 is matched with the blank cartridge for a rifle / machine gun.

[0027] As an embodiment of the present invention, in the above mortar simulation projectile, the first cavity and the hollow driving member 5 as a whole are similar to a cylinder. After the blank cartridge for a rifle / machine gun is fired, the gas jets forward along the inner cavity of the hollow driving member 5. Since the front side wall of the hollow driving member 5 fits against the inner wall of the first cavity, the high-pressure gas will expand in the space between the front end of the hollow driving member 5 and the front end of the first cavity. And since the rear end of the hollow driving member 5 contacts the firing pin base at the bottom of the mortar tube, the hollow driving member 5 cannot move backward, resulting in the forward movement of the projectile body 3, generating a "pole-boat" effect, and finally shooting the entire simulation projectile out of the muzzle, solving the problem of insufficient thrust due to the small amount of gas generated by the blank cartridge for a rifle / machine gun. The action process is shown in Figure 2 .

[0028] Due to the problem of the propellant ratio of the blank cartridge for a rifle / machine gun, the gas generated after the blank cartridge is fired will carry a certain amount of residual gunpowder. The present invention can temporarily accommodate these high-temperature and high-pressure gases through the expanded space, so that the residual gunpowder burns fully, achieving the maximization of the generated gas and further enhancing the driving force of the simulation projectile.

[0029] In addition, in order to enable the hollow driving member 5 to reset so as not to affect the flight of the simulation projectile and make the simulation projectile closer to a live ammunition, a reset member 7 can be sleeved on the hollow driving member 5 to reset the hollow driving member 5 after relative movement in the first cavity. Specifically, a reset spring in the figure can be used.

[0030] In order to prevent the reset spring from being wound and broken due to super strong extrusion, a circle of limiting members 6 can be fixed on the outer wall of the hollow driving member 5. Specifically, it can be a circle of protrusions in the figure. When the hollow driving member 5 moves relatively in the first cavity to a preset position, the limiting member 6 abuts against the rear end face of the tail tube 4, thereby terminating the relative movement.

[0031] To match the expansion and contraction of the hollow driving member 5, the exhaust port 8 can be further opened on the side wall of the tail pipe 4. When the hollow driving member 5 moves relative to the first cavity to a preset position, the exhaust port 8 communicates with the space between the front end of the hollow driving member 5 and the front end of the first cavity, and the gas can smoothly enter the gun barrel from the exhaust hole. The gas accumulated in the gun barrel expands and generates a certain thrust on the simulated projectile, further driving the simulated projectile.

[0032] The position of the limiting member 6 should match the position of the exhaust port 8. The two jointly determine the size of the movement stroke between the tail pipe 4 and the hollow driving member 5, and determine the range of the simulated projectile. A larger stroke results in a longer range, and vice versa, similar to the length of the oar of a boat, which is related to the distance that can be rowed at one time.

[0033] To restrict the hollow driving member 5, the rear end of the tail pipe 4 can adopt a closed structure. A through hole for the hollow driving member 5 to pass through is opened in the closed structure, and the hollow driving member 5 expands and contracts through the through hole. Here, a first restricting member 11 with a detachable connection is specifically adopted. For the convenience of processing and operation, the first restricting member 11 and the tail fin 10 can be prepared as a whole (see Figure 1 and Figure 3 ).

[0034] In the above mortar simulated projectile, if the blank cartridge of a rifle / machine gun is not restricted to a certain extent, the shell (i.e., the cartridge case) after the blank cartridge of the rifle / machine gun is fired often remains in the gun barrel. If the cartridge case needs to be taken out, the gun barrel needs to be disassembled and inverted, and the cleaning is very troublesome. Therefore, as an embodiment of the present invention, a second restricting member 12 can be detachably connected to the rear end of the hollow driving member 5, specifically by threaded connection. The second restricting member 12 is used to restrict the basic cartridge tube 9 in the inner cavity of the hollow driving member 5, and the shell after firing will not pop out. For the convenience of firing, a firing hole for passing the firing pin and communicating with the inner cavity of the hollow driving member 5 is opened on the second restricting member 12.

[0035] The second restricting member 12 is actually a cover body that blocks the rear end of the hollow driving member 5, similar to a bottle cap, and is combined with the hollow driving member by threads.

[0036] When the above mortar simulated projectile is in its initial state, the hollow driving member 5 moves relative to the first cavity to push the projectile body 3, giving the mortar simulated projectile an initial velocity, which is the main driving force. When the gas enters the gun chamber, through the accumulation and expansion of the gas, a certain thrust is added to the mortar simulated projectile. The overall driving force is strong, solving the problems of small charge amount, little gas generated, and insufficient driving force caused by the blank cartridge of a rifle / machine gun as the basic cartridge tube. It is applicable to both small-caliber mortars and medium- and large-caliber mortars.

[0037] For small-caliber mortars, since their shells are lighter (60mm mortar shells weigh less than one-third of 82mm mortar shells), only a smaller driving force is required; and because the cross-sectional area of the small-caliber mortar barrel is small, the distance from the rear end of the tail pipe to the closed gas ring is short, and the same gas can generate greater thrust. Therefore, the simulation shell of the small-caliber mortar can be simplified as follows Figure 4 As shown, it includes a projectile body 3, a tail pipe 4 arranged at the tail of the projectile body 3 and a tail fin 10 arranged at the tail of the tail pipe 4. A second cavity is provided in the tail pipe 4, and an exhaust port 8 connected to the second cavity is provided on the tail pipe 4. The rear end of the second cavity is used to load a basic cartridge 9. The gas generated by the firing of the basic cartridge 9 is discharged in sequence through the second cavity and the exhaust port 8.

[0038] The simulated projectile is also loaded with a basic cartridge case 9 at the rear end of the second cavity. The gas generated by firing the basic cartridge case 9 drives the simulated projectile out of the muzzle, emitting sound and light. This effectively improves the quality of mortar loading training and provides psychological training for the gunner. Its gas-driven structure discharges gas directly into the barrel, where the accumulated gas expands to propel the simulated projectile out of the muzzle. To further enhance the driving force, as one embodiment, an exhaust port can be positioned at the bottom of the tail pipe. The reaction force generated by the high-speed gas ejected from the rear end and the thrust generated by the gas expansion in the barrel combine to eject the simulated projectile out of the muzzle.

[0039] As an embodiment, the basic cartridge case 9 of the small-caliber mortar simulation projectile also adopts a rifle / machine gun blank cartridge, and a circumferential air-sealing ring 2 with the same effect is provided on the projectile body 3; similarly, in order to prevent the outer shell (i.e., cartridge case) of the rifle / machine gun blank cartridge from being retained in the gun barrel after being fired, a third restraint 14 is detachably connected to the rear end of the second cavity. The third restraint 14 is used to restrain the basic cartridge case 9 in the second cavity, and a firing hole is provided on the third restraint 14 for passing the firing pin, which is connected to the second cavity.

[0040] The third restraint 14 is actually a cover that blocks the rear end of the cavity. In order to facilitate operation, the third restraint 14 and the tail wing 10 are made into one piece. Figure 3 Similar, but the diameter of the middle through hole is smaller. For the structure in which the exhaust port is set at the bottom of the tail pipe, the third restraint 14 and the tail wing 10 are made into an integrated structure as shown in FIG. Figure 5 shown.

[0041] Figure 4 The structure in Figure 1 Simplified adjustments are made on the basis of the above, specifically: the limit member 6 is removed, the reset member 7 is removed, and the hollow driving member 5 is changed into a tube body fixed in the cavity of the tail pipe 4, specifically the rear end is fixed to the tail pipe. Therefore, this structure can divide the second cavity into an inner cavity 13 and an outer cavity 15. The rear end of the inner cavity 13 is used to load the basic medicine tube 9, and the front end of the inner cavity 13 is connected to the outer cavity 15, and the outer cavity 15 is connected to the exhaust port 8.

[0042] After the basic cartridge tube 9 is fired, the gas moves forward along the inner cavity 13, then moves to the outer cavity 15, and finally is discharged into the gun chamber from the exhaust port 8. Through the combined action of the expansion of the gas accumulated in the gun tube and the high-speed gas jetting backward, the simulated bullet is pushed out of the muzzle.

[0043] Similarly, after a blank cartridge of a rifle / machine gun is fired, the gas will carry a certain amount of residual gunpowder. Through the channels of the inner cavity 13 and the outer cavity 15, the present invention can temporarily accommodate these gases, so that the residual gunpowder burns fully, maximizing the generated gas and enhancing the driving force of the simulated bullet.

[0044] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0045] In the description of the present invention, the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or apparatus / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or apparatus / device.

[0048] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A mortar simulation projectile, comprising a projectile body, a tail tube provided at the tail of the projectile body, and tail fins provided at the tail of the tail tube, characterized in that, The tail tube is provided with a first cavity, and an exhaust port communicating with the first cavity is arranged on the tail tube. A hollow driving member that can telescopically extend from its rear end is slidably connected in the first cavity. A basic cartridge tube is loaded at the rear end of the inner cavity of the hollow driving member. The gas generated after the basic cartridge tube is fired causes the space between the front end of the hollow driving member and the front end of the first cavity to expand, driving the hollow driving member to make relative movement in the first cavity. When the relative movement reaches a preset position, the gas is discharged from the exhaust port; A reset member is sleeved on the hollow driving member to reset the hollow driving member after relative movement in the first cavity; The exhaust port is located on the side wall of the tail tube. When the hollow driving member makes relative movement in the first cavity to the preset position, the exhaust port communicates with the space between the front end of the hollow driving member and the front end of the first cavity, and the gas is discharged into the gun barrel from the exhaust hole. The accumulated gas in the gun barrel expands and generates a certain thrust on the simulated bullet.

2. A mortar simulation bomb according to claim 1, characterized in that: The basic cartridge tube is a blank cartridge for a rifle or a machine gun.

3. A mortar simulation projectile according to claim 1, characterized in that, The rear end of the hollow driving member is detachably connected with a second restraint member. The second restraint member is used to restrain the basic cartridge tube in the inner cavity of the hollow driving member. A firing hole for passing a firing pin and communicating with the inner cavity of the hollow driving member is opened on the second restraint member.

4. A mortar simulation projectile according to claim 1, characterized in that, A limiting member is arranged on the outer wall of the hollow driving member. When the hollow driving member makes relative movement in the first cavity to the preset position, the limiting member abuts against the first restraint member.

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