Mortar simulation bomb

Abstract

The invention discloses a mortar simulation bomb, which comprises a bomb body, a tail pipe arranged at the tail part of the bomb body and an empennage arranged at the tail part of the tail pipe, and is characterized in that a large amount of step / machine gun blank ammunition stored by troops is used as a basic powder pipe, and an inner cavity and an outer cavity are arranged in the tail pipe, so that the path of discharging gas into a bore is prolonged, and residual powder carried in the gas is fully combusted; and the generated gas is maximized, so that the problem that a simulated bullet cannot be shot far away or even cannot be shot out of a muzzle is solved, an acousto-optic effect is generated, the mortar filling training quality can be effectively improved, and psychological training can be performed on a gun holder.

Description

[0001] This invention is a divisional application of a mortar simulation bomb. The application date of the original application is April 13, 2023, the application number is 202310393211.5, and the name of the invention is a mortar simulation bomb. Technical Field

[0002] The invention relates to a mortar simulation bullet and belongs to the field of military training. Background Art

[0003] Mortars are the primary infantry escort weapon. Due to the unique muzzle-loading method, for many years, during live-fire loading training, soldiers had to tie a rope to a dummy round, then use the rope to pull the round out of the barrel after loading. This repetitive process resulted in poor training results due to poor technique. Summary of the Invention

[0004] The present invention provides a mortar simulation bomb, which solves the problems disclosed in the background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A mortar simulation projectile comprises a projectile body, a tail tube disposed at the rear of the projectile body, and a tail fin disposed at the rear of the tail tube. The projectile is characterized in that a second cavity is disposed in the tail tube, an exhaust port communicating with the second cavity is disposed on the tail tube, a rear end of the second cavity is used to load a basic cartridge, and gas generated by firing the basic cartridge is discharged sequentially through the second cavity and the exhaust port; The second cavity includes an inner cavity and an outer cavity. The rear end of the inner cavity is used for loading the basic medicine tube. The front end of the inner cavity is connected to the outer cavity, and the outer cavity is connected to the exhaust port.

[0006] The basic cartridge is a rifle or machine gun blank.

[0007] The rear end of the second cavity is detachably connected to a third restraint member, which is used to restrain the basic drug tube in the second cavity. The third restraint member is provided with a firing hole connected to the second cavity for passing the firing pin.

[0008] The beneficial effects achieved by the present invention are as follows: 1. The present invention loads a basic powder tube into the tail tube at the rear end of the projectile, and the gas generated by the basic powder tube after firing drives the simulated ejection out of the muzzle, and emits sound and light, which can effectively improve the quality of mortar loading training and can also provide psychological training for the gunner; 2. The present invention adopts rifle / machine gun blank cartridges as the basic powder tube, and the rifle / machine gun blank cartridges have a large storage capacity for troops, low cost, and are safe and reliable to use; 3. In view of the fact that the amount of rifle / machine gun blank ammunition is small, the gas generated is small, and the driving force is insufficient, the present invention designs two pneumatic structures for mortars of different calibers, one of which is to drive the hollow driving member to move backward in the first cavity through the expansion of gas in the tail tube. Since the rear end of the driving member contacts the firing pin base and cannot move backward, the projectile is pushed in the opposite direction toward the muzzle, just like shoving a boat, using the driving member as a rod to support the projectile as a boat, giving it a certain Initial velocity, and eventually the simulated ejection will be ejected from the muzzle, which is applicable to both small-caliber (60mm) mortars and large and medium-caliber (82mm, 100mm, 120mm) mortars; the other is to discharge the gas directly into the barrel, and the expansion of the gas accumulated in the barrel directly pushes the simulated ejection 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 gunpowder ratio problem of blank ammunition, a certain amount of residual gunpowder will be entrained 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 part and the front end of the first cavity, or in the process of the channel formed by the inner cavity and the outer cavity, the residual gunpowder is fully burned to maximize the generated gas; 5. The present invention is provided with a detachable restraint at the loading end of the basic cartridge, and the basic cartridge is restrained at the loading end by the restraint to prevent the primer shell from falling into the barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the first structure of a mortar simulated projectile; Figure 2 for Figure 1 Schematic diagram of the launch dynamics of the mortar simulated shell; Figure 3 Schematic diagram of the structure of the tail wing; Figure 4 This is a schematic diagram of the second structure of the mortar simulated projectile; Figure 5 Schematic diagram of the tail wing structure with the exhaust port opened at the rear end of the tail pipe.

[0010] Figure 1: fuze, 2: air-sealing ring, 3: projectile body, 4: tail pipe, 5: hollow driving part, 6: limit part, 7: reset part, 8: exhaust port, 9: basic powder tube, 10: tail fin, 11: first restraint part, 12: second restraint part, 13: inner cavity, 14: third restraint part, 15: outer cavity. DETAILED DESCRIPTION

[0011] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0012] like Figure 1 As shown, a mortar simulation projectile includes a projectile body 3, a tail tube 4 connected to the tail of the projectile body 3 and a tail fin 10 connected to the tail of the tail tube 4. A first cavity is provided in the tail tube 4, and the first cavity can be a cylindrical cavity. An exhaust port 8 connected to the first cavity is provided on the tail tube 4. A hollow driving member 5 that can be extended and retracted from its rear end is slidably connected in the first cavity. The front end side wall of the hollow driving member 5 is in contact with the inner wall of the first cavity. The rear end of the inner cavity of the hollow driving member 5 is filled with a basic drug tube 9. The gas generated by the firing of the basic drug 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 make relative movement in the first cavity. When the relative movement reaches a preset position, the gas is discharged from the exhaust port 8.

[0013] The mortar simulating round, which is loaded with a basic cartridge 9 at the rear end of the hollow driver 5, ejects the simulated projectile from the muzzle through the cartridge 9, emitting sound and light. This effectively improves mortar loading training and provides psychological training for the gunner. The pneumatic structure of the mortar simulating round utilizes gas expansion within the tail tube 4, increasing the space between the front end of the hollow driver 5 and the front end of the first cavity. This drives the hollow driver 5 to move relative to the first cavity, creating a "boating" effect that propels the simulated projectile out of the muzzle. This mortar simulating round is suitable for both small-caliber and large-caliber mortars, making it a versatile mortar simulating round.

[0014] As an embodiment of the present invention, the above-mentioned mortar simulation projectile includes a fuse 1, a projectile body 3, a tail pipe 4 and a tail fin 10 connected in sequence from front to back; wherein, the fuse 1 is a hard entity that can withstand repeated impacts with the ground, and the fuse 1 can be connected to the projectile body 3 through a thread, or can be made into one piece with the projectile body 3; a circumferential closed air ring 2 is provided on the projectile body 3 to increase the thrust of the gas on the simulation projectile; the tail pipe 4 can be threadedly connected to the projectile body 3, and the rear end of the tail pipe 4 is connected to the tail fin 10.

[0015] In the above-mentioned mortar simulation bullet, the basic powder tube 9 adopts rifle / machine gun blank bullets, which have large storage capacity, low cost, and are safe and reliable to use. In order to match the rifle / machine gun blank bullets, the rear end of the inner cavity of the hollow drive member 5 is matched with the rifle / machine gun blank bullets.

[0016] As an embodiment of the present invention, in the above-mentioned mortar simulation projectile, the first cavity and the hollow drive member 5 are similar to a cylinder as a whole. After the rifle / machine gun blank is fired, the gas is ejected forward along the inner cavity of the hollow drive member 5. Since the front side wall of the hollow drive member 5 is in contact with the inner wall of the first cavity, the high-pressure gas will expand in the space between the front end of the hollow drive member 5 and the front end of the first cavity. Since the rear end of the hollow drive member 5 is in contact with the firing pin base at the bottom of the mortar tube, the hollow drive member 5 cannot move backward, causing the projectile 3 to move forward, generating a "boat-supporting" effect, and finally ejecting the entire simulation projectile out of the muzzle, solving the problem of insufficient thrust due to the small amount of rifle / machine gun blank ammunition. See the action process. Figure 2 .

[0017] Due to the propellant ratio problem of rifle / machine gun blank cartridges, the gas generated after the blank cartridge is fired will carry a certain amount of residual gunpowder. The present invention can temporarily retain this high-temperature and high-pressure gas through the expansion space, so that the residual gunpowder can be fully burned, thereby maximizing the gas generated and further enhancing the driving force of the simulated bullet.

[0018] In addition, in order to enable the hollow driving member 5 to be reset so as not to affect the flight of the simulated bullet and make the simulated bullet closer to the real bullet, a reset member 7 can be mounted on the hollow driving member 5 to enable the hollow driving member 5 to be reset after relative movement in the first cavity. Specifically, the reset spring shown in the figure can be used.

[0019] In order to prevent the return spring from being entangled or broken due to excessive extrusion, a circle of limiting members 6 can be fixed on the outer wall of the hollow driving member 5, which can be a circle of protrusions in the figure. When the hollow driving member 5 moves relatively to a preset position in the first cavity, the limiting member 6 abuts against the rear end face of the tail pipe 4, thereby terminating the relative movement.

[0020] In order to match the expansion and contraction of the hollow driving member 5, an exhaust port 8 can be further opened on the side wall of the tail pipe 4. The hollow driving member 5 moves relatively to a preset position in the first cavity. The exhaust port 8 connects the space between the front end of the hollow driving member 5 and the front end of the first cavity. The gas can be smoothly discharged into the barrel from the exhaust hole. The expansion of the gas accumulated in the barrel generates a certain thrust on the simulated bullet, further driving the simulated bullet.

[0021] The position of the limiter 6 must match the position of the exhaust port 8. The two together determine the size of the movement stroke between the tail pipe 4 and the hollow drive member 5, and determine the range of the simulated bullet. The larger the stroke, the longer the range, and vice versa. It is equivalent to the length of the pole for punting a boat, which is related to the distance that can be punted at one time.

[0022] In order to restrain the hollow driving member 5, the rear end of the tail pipe 4 can adopt a closed structure, in which a through hole is provided for the hollow driving member 5 to enter and exit, and the hollow driving member 5 is extended and retracted through the through hole. Here, a detachable first restraining member 11 is specifically used. In order to facilitate processing and operation, the first restraining member 11 and the tail wing 10 can be prepared as a whole (see Figure 1 and Figure 3 ).

[0023] In the above-mentioned mortar simulation bullet, if the rifle / machine gun blank cartridge is not constrained to a certain extent, the shell (i.e., the cartridge case) of the rifle / machine gun blank cartridge after firing will often remain in the barrel. If the cartridge case is to be removed, the barrel needs to be disassembled and inverted, which is very troublesome to clean. Therefore, as an embodiment of the present invention, a second constraining member 12 can be detachably connected to the rear end of the hollow driving member 5, specifically a threaded connection. The second constraining member 12 is used to constrain the basic cartridge case 9 in the inner cavity of the hollow driving member 5, and the shell will not pop out after firing. In order to facilitate firing, a firing hole is opened on the second constraining member 12, which is connected to the inner cavity of the hollow driving member 5 and is used to pass the firing pin.

[0024] The second restraining member 12 is essentially a cover that blocks the rear end of the hollow driving member 5 , similar to a bottle cap, and is combined with the hollow driving member through threads.

[0025] Initially, the hollow driving element 5 moves relative to the first cavity, propping up the projectile body 3 and imparting an initial velocity to the mortar simulant, which serves as the primary driving force. As gases are discharged into the barrel, their accumulation and expansion further add a certain amount of thrust to the mortar simulant, resulting in a strong overall driving force. This solves the issues of small charge volume, low gas generation, and insufficient driving force associated with rifle / machine gun blank cartridges, making it suitable for both small-caliber and medium-caliber mortars.

[0026] 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.

[0027] 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.

[0028] 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 member 14 is detachably connected to the rear end of the second cavity. The third restraint member 14 is used to restrain the basic cartridge case 9 in the second cavity, and a firing hole is provided on the third restraint member 14 for passing the firing pin, which is connected to the second cavity.

[0029] 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.

[0030] 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.

[0031] After the basic cartridge 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 barrel from the exhaust port 8. The expansion of the gas accumulated in the barrel and the backward ejection of the high-speed gas push the simulated ejection out of the muzzle.

[0032] Similarly, after firing a blank cartridge of a rifle / machine gun, the gas will carry a certain amount of residual gunpowder. The present invention can temporarily retain these gases through the channels of the inner cavity 13 and the outer cavity 15, so that the residual gunpowder can be fully burned, the generated gas is maximized, and the driving force of the simulated bullet is enhanced.

[0033] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner as long as no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

[0034] In the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are intended solely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not intended to indicate or imply relative importance.

[0035] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus / device.

[0037] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A mortar simulation projectile, comprising a projectile body, a tail pipe arranged at the tail of the projectile body, and a tail fin arranged at the tail of the tail pipe, characterized in that: A second cavity is provided in the tail pipe, and an exhaust port communicating with the second cavity is provided on the tail pipe. The rear end of the second cavity is used to load the basic cartridge, and the gas generated by firing the basic cartridge is discharged in sequence through the second cavity and the exhaust port. The second cavity includes an inner cavity and an outer cavity. The rear end of the inner cavity is used for loading the basic medicine tube. The front end of the inner cavity is connected to the outer cavity, and the outer cavity is connected to the exhaust port.

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

3. A mortar simulation bomb according to claim 2, characterized in that: The rear end of the second cavity is detachably connected to a third restraint member, which is used to restrain the basic drug tube in the second cavity. The third restraint member is provided with a firing hole connected to the second cavity for passing the firing pin.

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