Device for launching shotgun shell based on grenade launcher

Abstract

The invention belongs to the field of ammunition launching, and particularly discloses a device for launching a shotgun based on a grenade launcher, the device comprises a gun barrel body, a suppressor and a joint sleeve, and an inner chamber for loading the shotgun is formed in the gun barrel body in a penetrating manner; the suppressor is coaxially assembled at the front end of the gun barrel body and is provided with a center hole coaxial with the inner chamber; the section sleeve is detachably connected to the tail end of the gun barrel body, and the gun barrel body is fixedly installed in a launching tube of a launcher through the section sleeve. Through the structural design, the gun barrel body capable of loading the shotgun is fixedly mounted in the launching tube of the grenade launcher, so that the grenade launcher can launch the shotgun, the unmanned aerial vehicle can be effectively countered in a large area through combination of the grenade launcher and the shotgun, the cost is low, the limitation is few, and the application range is wide. On the premise of being compatible with an existing individual soldier equipment system, the anti-unmanned aerial vehicle capability of the individual soldier is effectively expanded.

Description

Technical Field

[0001] The present application belongs to the field of ammunition launching, and more specifically, relates to a device for launching shotgun shells based on a grenade launcher. Background Art

[0002] A drone is an unmanned aircraft controlled by a radio remote control device and a self-contained program control device. Drones are divided into military drones and civilian drones. With the rapid development of science and technology, the development of drones is getting faster and faster. Drones gradually have the ability to take aerial photos, fly in the air, reconnaissance images, vertical bombing, suicide collision, etc., especially in the military field. The attack and reconnaissance of drones are changing the rules of the battlefield.

[0003] Traditional air defense weapons (such as missiles and anti-aircraft guns) are difficult to effectively intercept low-altitude, slow-moving, and small targets. Therefore, ground personnel often encounter close-range harassment from drones. In order to reduce the damage caused by drones to their own personnel, it is urgent to counter drones. In the existing technology, laser weapons, wireless jammers, net guns, etc. are generally used to destroy small drones, but these methods are relatively expensive, have many restrictions on use, have a small range, are not effective, and are not easy to carry, which is not conducive to promotion. The gun-mounted front-loading grenade launcher is a portable surface-injury weapon that includes a launch tube for launching ammunition. However, the grenade launcher currently does not have air-blast ammunition suitable for drones and cannot effectively counter drones. Summary of the invention

[0004] In view of the defects of the prior art, the present application provides a device for launching shotgun shells based on a grenade launcher, aiming to solve the problem that the existing equipment cannot effectively counter drones at a low cost.

[0005] The present application provides a device for launching shotgun shells based on a grenade launcher, which specifically includes a barrel body, a suppressor and a sleeve. The interior of the barrel body is penetrated to form an inner bore for loading shotgun shells; the suppressor is coaxially assembled on the front end of the barrel body and is provided with a center hole coaxial with the inner bore; the sleeve is detachably connected to the rear end of the barrel body, and the barrel body is fixedly installed in the launch tube of the launcher through the sleeve.

[0006] The above technical scheme conceived by the present application, compared with the prior art, is that the present application fixes the barrel body capable of loading shotgun shells in the launching tube of the grenade launcher, so that the grenade launcher can launch shotgun shells, and when the shotgun shells are launched, the muzzle characteristics of the barrel body when launching the shotgun shells are suppressed by the suppressor. By combining the grenade launcher and the shotgun shells, it is possible to achieve the effect of effectively countering drones over a large area while being compatible with the current individual equipment system, with low cost and fewer restrictions, effectively expanding the individual soldier's anti-drone capability.

[0007] As a further preference, a plurality of gas guide holes connected to the inner bore are evenly distributed along the circumferential direction on the outer peripheral wall of the barrel body near the front end, and the gas guide holes are located inside the suppressor.

[0008] By adopting the above technical solution, after the shotgun is fired, the gas guide hole can guide the high-pressure gas in the inner chamber of the barrel body. When the unburned gunpowder gas reaches the gas guide hole, it can be poured into the inside of the launch tube, reducing the proportion of unburned gunpowder overflowing from the mouth of the barrel body.

[0009] As further preferred, the suppressor is slidably arranged along the axial direction of the barrel body; the device also includes a positioning mechanism arranged on the suppressor for slidingly positioning the suppressor.

[0010] By adopting the above technical solution, the positioning mechanism can fix the position of the suppressor on the barrel body, significantly enhancing the universal adaptability of the device, enabling it to adapt to the firing requirements of a variety of shotgun shells. Through this design, not only a customized suppression effect on the muzzle characteristics is achieved, but also the carrying size of the device is effectively reduced, thereby improving portability.

[0011] As a further preferred embodiment, a plurality of limiting ring grooves are formed on the outer peripheral wall of the barrel body along its axial direction; the positioning mechanism comprises a limiting latch, and the limiting latch is elastically arranged on the suppressor and can be inserted into the limiting ring groove.

[0012] By adopting the above technical solution, after the suppressor moves, the limiting latch can be inserted into the limiting ring groove on the barrel body, so that the position of the suppressor is fixed, the structure is simple, and the limiting effect is good.

[0013] As a further preferred embodiment, the positioning mechanism also includes a spring seat, a spring and a limit pin, the spring seat is rotatably connected to the suppressor and the rotation axis is parallel to the barrel body, the limit latch is slidably connected to the spring seat and the sliding direction is perpendicular to the rotation axis of the spring seat, the spring is fixedly connected between the limit latch and the spring seat and the layout direction is the same as the sliding direction of the limit latch, and the limit pin is fixedly connected to the suppressor to limit the rotation of the limit latch inserted in the limit ring groove.

[0014] By adopting the above technical solution, the limit latch can rotate together with the spring seat. After pressing the limit latch, it can compress the spring so that the limit latch can be inserted into the limit ring groove. At this time, after releasing the limit latch, the limit pin can limit the limit latch to prevent the limit latch from detaching from the limit ring groove. When the limit latch is pressed again, it compresses the spring again, so that after the limit latch is moved out of the limit ring groove, the position of the suppressor can be adjusted.

[0015] As further preferred, the suppressor comprises an expansion member and a diversion member which are coaxially arranged and have an integral structure, the radius of the expansion member is larger than the radius of the diversion member, the interior of the expansion member is an expansion chamber, a side of the expansion chamber away from the diversion member is provided with a reverse flow wall, the interior of the diversion member is a diversion chamber, and the expansion chamber is connected to the outside of the suppressor through the diversion chamber.

[0016] By adopting the above technical scheme, when the projectile flies out of the barrel body, it enters the expansion chamber, reduces the pressure of the gunpowder gas through the large volume, and causes backflow at the backflow wall, further delaying the overflow of the gunpowder gas, so that the propellant is completely burned in the expansion chamber. After the projectile flies out of the expansion chamber, the gunpowder gas is ejected from the expansion chamber. During the firing process, the pressure difference between the ejected gunpowder gas and the atmosphere is reduced by expanding in the expansion chamber, thereby reducing the muzzle characteristics, and finally achieving the suppression of sound, smoke and flame.

[0017] As further preferred, both ends of the guide member are coaxially provided with guide members of annular structure, the inner circumferential wall of the guide member is in contact with the outer wall of the barrel body, and a plurality of guide holes are opened on the guide member, and the guide holes connect the two sides of the guide member.

[0018] By adopting the above technical solution, the suppressor can be stably assembled on the barrel body through the guide piece, and the gas inside the suppressor can flow through the guide hole.

[0019] As a further preference, an annular cavity is formed on the inner circumferential wall of the guide member along the circumferential direction.

[0020] As a further preference, the front end of the barrel body is also provided with an anti-dropping member for preventing the suppressor from falling off.

[0021] By adopting the above technical solution, the provision of an anti-dropping member can prevent the suppressor from falling off the barrel body, thereby requiring reassembly and affecting the efficiency of use.

[0022] As further preferred, the sleeve is an annular structure and is threadedly connected and adapted to the barrel body, and a fixing annular groove is formed around the outer peripheral wall of the sleeve.

[0023] By adopting the above technical solution, the extension sleeve can be efficiently installed on the barrel body, and the barrel body can be quickly fixedly installed in the launch tube of the launcher through the extension sleeve, thereby improving the installation efficiency of the barrel body.

[0024] In general, the above technical solutions conceived by this application have the following technical advantages compared with the prior art: 1. This application fixes the barrel body loaded with shotgun shells in the launch tube of the grenade launcher, so that the grenade launcher can launch shotgun shells, and when the shotgun shells are launched, the muzzle characteristics of the barrel body when launching the shotgun shells can be suppressed by the suppressor. This application combines the grenade launcher and shotgun shells, and can achieve the effect of effectively countering drones over a large area while being compatible with the current individual equipment system, with low cost and fewer restrictions, effectively expanding the individual soldier's ability to counter drones.

[0025] 2. This application significantly enhances the universal adaptability of the device by enabling the suppressor to move along the axis of the barrel body and designing a telescopic adjustment function between the suppressor and the barrel body, so that it can adapt to the firing requirements of a variety of shotgun shells. Through this design, not only a customized suppression effect of the muzzle characteristics is achieved, but also the carrying size of the device is effectively reduced, improving portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the device provided in the embodiment of the present application being installed as a whole in a launch tube; Figure 2 It is a schematic diagram of the overall structure of the gun barrel body provided in an embodiment of the present application; Figure 3 This is a schematic diagram of the overall structure of the suppressor provided by an embodiment of the present application from a first perspective; Figure 4 is a schematic diagram of the overall structure of the suppressor provided by an embodiment of the present application from a second viewing angle; Figure 5 It is a schematic diagram of the overall structure of the positioning mechanism provided in the embodiment of the present application; Figure 6 It is a schematic diagram of the overall structure of the section sleeve provided in the embodiment of the present application; Figure 7 It is a schematic diagram of the overall structure of the limit latch provided in the embodiment of the present application.

[0027] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Barrel body; 11. Inner bore; 12. Gas guide hole; 13. Limiting ring groove; 14. Anti-dropping part; 15. External thread; 2. Suppressor; 21. Center hole; 22. Expansion part; 221. Expansion chamber; 222. Backflow wall; 23. Guide part; 231. Guide chamber; 24. Guide part; 241. Guide hole; 3. Section sleeve; 31. Mounting ring groove; 32. Round hole; 4. Positioning mechanism; 41. Limiting latch; 411. Mounting straight groove; 412. Pressing surface; 413. Limiting tooth; 42. Spring seat; 43. Spring; 44. Limiting pin; 45. Rotating pin; 5. Launch tube; 51. Fixed bullet pin. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] Among various anti-drone (counter-drone) technical means, area-kill weapons provide soldiers with the last layer of defense and counterattack capabilities by virtue of their area-kill characteristics and the advantage of being portable. Among the equipment currently in service that can be used by individual soldiers, area-kill weapons include military shotguns (caliber 18.4mm, hereinafter referred to as "shotguns") and gun-mounted front-loaded grenade launchers (caliber 35mm, hereinafter referred to as "launchers"). Among them, shotguns have a natural advantage in combating small drones. After the projectile explodes, a large number of shotgun shells can be released to form a scattered cloud to cause hard damage to the drone. However, shotguns are a type of equipment that occupies the staff. Except for use in special operations, individual soldiers generally do not carry them when performing daily tasks. The launcher and the rifle form a weapon system with a firepower output effect that takes into account both the straight and the curved, and combines points and surfaces. It does not occupy the staff and is an essential module in the soldier system, but the launcher currently does not have air-blast ammunition suitable for drones. Due to the different calibers of shotgun shells and grenades, the function of the launcher to launch shotgun shells cannot be realized at present. At the same time, because the launcher pursues lightweight and flexible tactical performance, its structural size is relatively small. When firing shotgun shells, the burning gunpowder gas sprays out of the muzzle to form a detonation sound and a significant flame feature, causing active exposure of soldiers, physiological discomfort and even permanent hearing damage, seriously affecting combat effectiveness and tactical operations. In addition, the charge of shotgun shells is large, and factors such as the stacking and arrangement of projectiles result in limited or poor noise suppression methods, which also deepens the difficulty of developing such a device. Based on the above problems, the present application combines the launcher and shotgun shells to develop a device for launching shotgun shells based on a grenade launcher. The device effectively expands the ability of individual soldiers to counter UAVs while being compatible with the current individual equipment system. At the same time, through innovative design, the problem of suppressing the muzzle characteristics when firing shotgun shells with a short barrel is solved, so that it fully meets the tactical use needs of individual soldiers.

[0030] Reference Figure 1 The present application discloses a device for launching shotgun shells based on a grenade launcher. When in use, the device is inserted and assembled from the mouth of a launching tube 5 of the grenade launcher, and includes components such as a barrel body 1, a suppressor 2, a positioning mechanism 4, and a sleeve 3.

[0031] Reference Figure 2 The barrel body 1 is cylindrical and has an inner bore 11 for loading shotgun shells along its axial direction. The outer structure of the barrel body 1 is a stepped shaft, including a tail shaft that matches the base of the launcher, a thread that is combined with the sleeve 3, and an outer wall that matches the suppressor 2. Figure 3-5 The suppressor 2 is coaxially assembled at the front end of the barrel body 1 and is provided with a center hole 21 coaxially arranged with the inner bore 11 along the axial direction. The center hole 21 can pass the projectile. The suppressor 2 can suppress the muzzle characteristics of the barrel body 1 when firing shotgun shells. The suppressor 2 is slidably arranged along the axial direction of the barrel body 1 to realize the telescopic function. The positioning mechanism 4 is arranged on the suppressor 2 to slide and position the suppressor 2. To prevent the suppressor 2 from falling off the barrel body 1, the front end of the barrel body 1 is also fixedly connected with an anti-falling part 14 of an annular structure. A telescopic adjustment function is designed between the suppressor 2 and the barrel body 1, which significantly enhances the universal adaptability of the device and enables it to adapt to the firing requirements of various shotgun shells. Through this design, not only the customized suppression effect of the muzzle characteristics is achieved, but also the carrying size of the device is effectively reduced, thereby improving the portability.

[0032] Reference Figure 6 The section sleeve 3 is coaxially detachably connected to the tail of the barrel body 1. The barrel body 1 can be fixedly installed in the launching tube 5 of the grenade launcher through the section sleeve 3. The section sleeve 3 is an annular structure and is threadedly connected and adapted to the barrel body 1. The outer peripheral wall of the barrel body 1 near the tail is provided with an external thread 15. The outer peripheral wall of the section sleeve 3 is surrounded by a fixing ring groove 31. The fixed bullet pin 51 on the launching tube 5 of the grenade launcher can be inserted into the fixing ring groove 31, thereby realizing the assembly and fixation of the barrel body 1. The tail of the section sleeve 3 is conical, and four circular holes 32 are evenly distributed on the tail end surface for assembly force application.

[0033] Reference Figure 5 and Figure 7 In this embodiment, a plurality of limiting ring grooves 13 are formed on the outer peripheral wall of the barrel body 1 along the axial direction thereof, and the suppressor 2 is fixed to the corresponding limiting ring grooves 13 by the positioning mechanism 4 .

[0034] Specifically, the positioning mechanism 4 includes a limiting catch 41, a spring seat 42, a spring 43 and a limiting pin 44. The limiting catch 41 is elastically arranged on the suppressor 2 and can be inserted into the limiting ring groove 13, so as to realize the position fixing of the suppressor 2. More specifically, the spring seat 42 is rotatably connected to the suppressor 2 through a rotating pin 45, and the rotating axis of the spring seat 42 is parallel to the barrel body 1. The limiting catch 41 is slidably connected to the spring seat 42, and the sliding direction of the limiting catch 41 is perpendicular to the rotating axis of the spring seat 42. One end of the limiting catch 41 is provided with a mounting straight groove 411 for the spring seat 42 to be plugged in, and the mounting straight groove 411 extends to the end to form an orifice. The limiting catch 41 can rotate synchronously with the spring seat 42. The spring 43 is fixedly connected between the limiting catch 41 and the spring seat 42, and the layout direction of the spring 43 is perpendicular to the rotating axis of the spring seat 42. The limit pin 44 is fixedly connected to the inhibitor 2 to limit the rotation of the limit clip 41 inserted in the limit ring groove 13. When the limit clip 41 is inserted into the limit ring groove 13, the limit clip 41 is pushed to compress the spring 43 to avoid the limit pin from interfering with the limit clip 41. After the limit clip 41 is inserted into the limit ring groove 13, the limit clip 41 is released, and the spring 43 pushes the limit clip 41 to extend. The limit pin 44 can realize the limit fixation of the limit clip 41 so that it is stably located in the limit ring groove 13. In order to facilitate pressing the limit clip 41 and limiting and fixing it with the limit clip 41, a pressing surface 412 is provided at the end of the limit clip 41 away from the installation straight groove 411, and an integrally formed limit tooth 413 is provided. When the limit latch 41 is installed into the suppressor 2, the limit tooth 413 is inserted under the limit pin 44, and the limit tooth 413 is stuck in the limit ring groove 13 on the barrel body 1. When in use, the limit latch 41 is pressed, and the limit tooth 413 can rotate after being free from the restriction of the limit pin 44 and can withdraw from the limit ring groove 13.

[0035] Reference Figure 2 and Figure 3Furthermore, a plurality of gas guide holes 12 connected to the inner bore 11 are evenly distributed along the circumferential direction on the outer peripheral wall near the front end of the barrel body 1. The gas guide holes 12 are used to guide the high-pressure combustion gas in the inner bore 11. The number and arrangement of the holes along the circumference can be adjusted according to actual conditions. In this embodiment, the number of gas guide holes 12 along the circumference is 8, and there is only one row. The gas guide holes 12 are located inside the suppressor 2. The interior of the suppressor 2 is a cavity structure, and the exterior of the suppressor 2 is an unequal diameter cylindrical structure, that is, the suppressor 2 includes an expansion member 22 and a guide member 23 that are coaxially arranged and integrally structured, wherein the expansion member 22 and the guide member 23 are both cylindrical structures and the radius of the expansion member 22 is greater than the radius of the guide member 23. The positioning mechanism 4 is arranged between the expansion member 22 and the guide member 23. The interior of the expansion member 22 is provided with an expansion chamber 221, and the expansion chamber 221 is far away from the guide member 23. A reverse flow wall 222 is provided on one side of the guide member 23, and the interior of the guide member 23 is a guide chamber 231, and the expansion chamber 221 is connected to the guide chamber 231; at the same time, both ends of the guide member 23 are coaxially provided with a guide member 24 of an annular structure, and the guide member 24 is in contact with the outer wall of the barrel body 1 along its inner wall. The inner circumferential wall of the guide member 24 is provided with an annular cavity along the circumferential direction, and the suppressor 2 is stably installed on the barrel body 1 through the guide member 24. A plurality of guide holes 241 are provided on the guide member 24, and the opening direction of the guide holes 241 is the same as the axial direction of the barrel body 1. The guide holes 241 are connected to both sides of the guide member 24, and the expansion chamber 221 and the guide chamber 231 are connected through the guide holes 241, and the guide chamber 231 is connected to the inside of the launch tube 5 of the launcher at the same time. The guide holes 241 are distributed circumferentially along the guide member 24, and the number can be adjusted according to actual conditions.

[0036] The loading, unloading and firing operations of the device and the launcher in the present application are the same as the loading, unloading and firing of the launcher. When in use, first load the shotgun shell into the inner bore 11 of the barrel body 1, and then insert it from the mouth of the launch tube 5. When it is fixed in place, the fixed bullet pin 51 on the launch tube 5 is stuck in the fixing ring groove 31. The firing mechanism of the launcher is triggered to fire the shotgun shell, and the gunpowder gas pushes the shotgun shell to move along the barrel body 1. When the unburned gunpowder gas reaches the gas guide hole 12, it is introduced into the drainage chamber 231 and then poured into the inside of the launch tube 5. When the projectile flies out of the barrel body 1, it enters the expansion chamber 221, and the pressure of the gunpowder gas is reduced by the large volume, and a backflow occurs at the backflow wall 222, which further delays the overflow of the gunpowder gas. When the projectile flies out of the barrel body, it enters the expansion chamber, and the pressure of the gunpowder gas is reduced by the large volume, and a backflow occurs at the backflow wall 222, which further delays the overflow of the gunpowder gas, so that the propellant is completely burned in the expansion chamber. After the projectile flies out of the expansion chamber, the gunpowder gas is ejected from the expansion chamber. During the launching process, the pressure difference between the ejected gunpowder gas and the atmosphere is reduced by expanding in the expansion chamber, thereby reducing the muzzle characteristics and ultimately achieving the suppression of sound, smoke and flame.

[0037] In the present application, when the suppressor 2 is in the maximum expanded state, its tail end does not escape from the inner bore 11 of the launch tube 5, and the gas and propellant gas in the launch tube 5 are blocked from overflowing, and the stability of the suppressor 2 during launch is ensured. When the suppressor 2 is in the contracted state, the gas guide hole 12 directly guides the unburned propellant gas into the expansion chamber 221, and then guides the gas to the guide chamber 231 or the launch tube 5 through the guide hole 241. This state weakens the function of the guide chamber 231 in transferring the unburned propellant, and is generally used in bullets with lower chamber pressure or smaller charge.

[0038] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations or constituent elements, and do not limit one or more additional functions, operations and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components or combinations thereof.

[0039] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for launching shotgun shells based on a grenade launcher, characterized in that: The invention comprises a barrel body (1), a suppressor (2) and a sleeve (3), wherein the barrel body (1) is provided with an inner chamber (11) for loading shotgun shells; The suppressor (2) is coaxially mounted on the front end of the barrel body (1) and is provided with a center hole (21) coaxial with the inner bore (11); The sleeve (3) is detachably connected to the rear end of the barrel body (1), and the barrel body (1) is fixedly installed in the launch tube of the launcher through the sleeve (3).

2. A device for launching shotgun shells based on a grenade launcher as claimed in claim 1, characterized in that: A plurality of gas guide holes (12) connected to the inner bore (11) are evenly distributed along the circumferential direction on the outer peripheral wall of the barrel body (1) near the front end, and the gas guide holes (12) are located inside the suppressor (2).

3. A device for launching shotgun shells based on a grenade launcher as claimed in claim 1, characterized in that: The suppressor (2) is slidably arranged along the axial direction of the barrel body (1); the device also includes a positioning mechanism (4) arranged on the suppressor (2) for slidingly positioning the suppressor (2).

4. A device for launching shotgun shells based on a grenade launcher as claimed in claim 3, characterized in that: A plurality of limiting ring grooves (13) are provided on the outer peripheral wall of the barrel body (1) along the axial direction thereof; the positioning mechanism (4) comprises a limiting latch (41), the limiting latch (41) being elastically arranged on the suppressor (2) and being capable of being latched into the limiting ring groove (13).

5. A device for launching shotgun shells based on a grenade launcher as claimed in claim 4, characterized in that: The positioning mechanism (4) further comprises a spring seat (42), a spring (43) and a limiting pin (44); the spring seat (42) is rotatably connected to the suppressor (2) and its rotation axis is parallel to the barrel body (1); the limiting latch (41) is slidably connected to the spring seat (42) and its sliding direction is perpendicular to the rotation axis of the spring seat (42); the spring (43) is fixedly connected between the limiting latch (41) and the spring seat (42) and its layout direction is the same as the sliding direction of the limiting latch (41); the limiting pin (44) is fixedly connected to the suppressor (2) to limit the rotation of the limiting latch (41) inserted in the limiting ring groove (13).

6. A device for launching shotgun shells based on a grenade launcher as claimed in claim 1, characterized in that: The suppressor (2) comprises an expansion member (22) and a drainage member (23) which are coaxially arranged and have an integral structure, the radius of the expansion member (22) is larger than the radius of the drainage member (23), the interior of the expansion member (22) is an expansion chamber (221), a side of the expansion chamber (221) away from the drainage member (23) is provided with a reverse flow wall (222), the interior of the drainage member (23) is a drainage chamber (231), and the expansion chamber (221) is connected to the drainage chamber (231).

7. A device for launching shotgun shells based on a grenade launcher as claimed in claim 6, characterized in that: Both ends of the guide member (23) are coaxially provided with guide members (24) of annular structure, the inner circumferential wall of the guide member (24) is in contact with the outer wall of the barrel body (1), and a plurality of guide holes (241) are provided on the guide member (24), and the guide holes (241) are connected to both sides of the guide member (24).

8. A device for launching shotgun shells based on a grenade launcher as claimed in claim 7, characterized in that: The inner peripheral wall of the guide member (24) is provided with an annular cavity along the circumferential direction.

9. A device for launching shotgun shells based on a grenade launcher as claimed in claim 1, characterized in that: The front end of the gun barrel body (1) is also provided with an anti-dropping piece (14) for preventing the suppressor (2) from falling off.

10. A device for launching shotgun shells based on a grenade launcher as claimed in claim 1, characterized in that: The sleeve (3) is an annular structure and is threadedly connected and adapted to the barrel body (1). A fixing annular groove (31) is formed around the outer peripheral wall of the sleeve (3).

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