Blocking device for firearm de-functioning and mounting and dismounting method thereof

Abstract

The invention belongs to the field of firearm de-functioning, and particularly discloses a blocking device for firearm de-functioning and a mounting and dismounting method thereof.The blocking device comprises a wire chamber blocking piece and a cartridge chamber blocking piece, the wire chamber blocking piece and the cartridge chamber blocking piece are each of a hollow tubular structure, the wire chamber blocking piece is embedded in a wire chamber of a gun barrel, and the cartridge chamber blocking piece and the cartridge chamber blocking piece are both of a hollow tubular structure; the cartridge chamber blocking piece is embedded in a cartridge chamber of the gun barrel, and the cartridge chamber blocking piece, the cartridge chamber blocking piece and the gun barrel are located on the same axis. Through the structural design of the blocking device, the bullet loading function and the bullet launching function of the firearms can be removed, under the condition that the structures and the functions of the firearms are kept complete and intact, the lossless function removing function is achieved, the requirements of firearm cultural relics or firearms participating in an exhibition on the function removing function are met, and the aim of protecting the cultural relics is achieved.

Description

Technical Field

[0001] The present application belongs to the field of firearm disabling, and more specifically, to a blocking device for firearm disabling and a method for installing and disassembling the device. Background Art

[0002] The guns collected in museums are cultural relics with special significance or great collection value. From the perspective of value, they are cultural relics rather than firearms, but they still have the firing function of firearms, so their firing function needs to be removed before collection and exhibition.

[0003] Existing firearms all use the barrel to energize the projectile, making the barrel lose its firing function and thus achieving the purpose of deactivating the function. Therefore, removing the firing function of the barrel has become the most direct and effective means of deactivating the function of the firearm. Existing methods of removing the firing function of the barrel usually cause damage to the barrel. Using this method to treat the barrel will destroy the integrity and integrity of the firearm cultural relic, and cannot meet the purpose of deactivating the function of the firearm to protect the cultural relic. Summary of the invention

[0004] In response to the defects of the prior art, the present application provides a blocking device for disabling the function of a firearm and a method for installing and disassembling the device, aiming to solve the problem that the existing method of removing the firing function of a gun barrel will cause damage to the gun barrel, which will destroy the integrity and intactness of the firearm cultural relic and cannot meet the purpose of cultural relic protection.

[0005] In the first aspect, the blocking device for disabling a firearm provided in the present application specifically includes a rifle blocking piece and a chamber blocking piece, wherein the rifle blocking piece and the chamber blocking piece are both hollow tubular structures, the rifle blocking piece is embedded in the rifle of the gun barrel, the chamber blocking piece is embedded in the chamber of the gun barrel, and the rifle blocking piece, the chamber blocking piece and the gun barrel are located on the same axis.

[0006] Through the above technical scheme conceived by the present application, compared with the prior art, since the present application adopts the chamber and rifling of the gun barrel by adopting the chamber blocking piece and the rifling blocking piece, the loading function and the projectile firing function of the firearm can be removed, and the original structure of the firearm can be kept intact to achieve non-destructive defunctionalization, which meets the requirements for defunctionalization of firearm cultural relics or firearms participating in exhibitions. It has significant advantages in defunctionalization of firearm cultural relics in museums and can achieve beneficial effects that meet the purpose of cultural relic protection.

[0007] As a further preferred embodiment, both ends of the rifle blocking piece are provided with expansion openings, and the diameter of the expansion openings gradually decreases from the ends of the rifle blocking piece toward the middle thereof.

[0008] By adopting the above technical solution, an expansion port is provided at the end of the rifle plugging piece, which can be easily deformed and embedded in the rifling under the action of impact, so that its position inside the rifle is fixed without causing damage to the barrel structure. The operation is simple and convenient, and at the same time, the difficulty of disassembling the rifle plugging piece can be increased. When the impact piece or the cleaning rod is inserted into the expansion port, it will slide toward the inner hole and cannot apply force, thereby increasing the difficulty of removal. When the edge of the expansion port is blocked, the rifle plugging piece will become larger under the action of strong force, and the combination with the rifle will be more firmly.

[0009] As a further preference, a docking port is provided at one end of the chamber blocking member close to the rifle blocking member, and a caliber of the docking port gradually decreases from the end of the chamber blocking member toward the middle thereof.

[0010] By adopting the above technical scheme, the chamber is sealed after the chamber blocking piece is installed in the chamber. Similarly, the difficulty of disassembling the chamber blocking piece can be increased through the docking interface. When an impact piece or a cleaning rod is inserted into the docking interface, it will slide toward the inner hole and cannot apply force, thereby increasing the difficulty of disassembly. When the rifle blocking piece is disassembled, it can enter the docking interface and form a tight fit with the chamber blocking piece, which is convenient for the simultaneous disassembly of the rifle blocking piece and the chamber blocking piece, thereby improving the disassembly efficiency.

[0011] As a further preferred embodiment, the minimum caliber of the docking port is not less than the minimum caliber of the extension port, and is not greater than the maximum caliber of the extension port.

[0012] By adopting the above technical solution, the chamber blocking piece is not easily pushed out alone. At the same time, when removing the rifle blocking piece, the rifle blocking piece is pushed to one side of the chamber blocking piece, and the chamber blocking piece can be pushed out together with the rifle blocking piece, thereby improving the disassembly efficiency.

[0013] As a further preference, a strip opening is provided on one side of the chamber blocking member along its axial direction.

[0014] By adopting the above technical solution, the arrangement of the strip-shaped opening enables the chamber plugging piece to be easily deformed, so that the chamber plugging piece can better adapt to the tapered chamber.

[0015] As further preferred, the rifle blocking member is provided in plurality.

[0016] By adopting the above technical solution, for some firearms with low supervision requirements and easy access to ammunition, the number of rifle plugging pieces can be increased to enhance the effect of deactivation and make it difficult to restore the function.

[0017] In a second aspect, the present application provides a method for installing the above-mentioned blocking device, comprising the following steps: S1: After cleaning the barrel, install the rifling plug into the rifling of the barrel; S2: impacting both ends of the rifle blocking member at the same time, so that the rifle blocking member is deformed to achieve rifle blocking; S3: Install the chamber plug into the chamber opening of the barrel; S4: Impact the chamber blocking piece so that the chamber blocking piece completely enters the chamber, thereby completing the installation of the blocking device.

[0018] In a third aspect, the present application provides a method for installing the above-mentioned blocking device, comprising the following steps: S1: Processing multiple rifling plugs to match the rifling of the barrel; S2: After cleaning the barrel, multiple rifling plugs are sequentially installed into the barrel rifling; S3: Fill the rifling of the barrel with structural glue and open a through hole along the axial direction of the rifling; S4: Install the chamber plug into the chamber opening of the barrel; S5: Impact the chamber blocking piece so that the chamber blocking piece completely enters the chamber, thereby completing the installation of the blocking device.

[0019] As a further preferred method, the method for opening the through hole in step S3 is: inserting a heated cleaning rod into the rifling of the barrel to allow the structural adhesive to quickly form a surface drying layer, and then withdrawing the cleaning rod to complete the opening of the through hole.

[0020] In a fourth aspect, the present application provides a method for disassembling the above-mentioned blocking device, comprising the following steps: S1: cutting the end of the rifle plug away from the chamber plug to form a force-bearing plane; S2: Impact the force-bearing plane until the rifle plugging piece contacts the chamber plugging piece, and then the chamber plugging piece and the rifle plugging piece are pushed out of the chamber in turn to complete the disassembly.

[0021] In general, the above technical solutions conceived by this application have the following technical advantages compared with the prior art: The present application uses a chamber plug and a rifle plug to seal the chamber and rifling of the gun barrel, thereby removing the loading function and the projectile firing function of the firearm, and achieves non-destructive deactivation while keeping the original structure of the firearm intact, which meets the requirements for deactivation of firearm cultural relics or firearms participating in exhibitions, and has significant advantages in deactivation of firearm cultural relics in museums; at the same time, it can achieve non-destructive and easy-to-handle reversible restoration, so that the exhibited firearms and firearm cultural relics can maintain the requirements of cultural relic value while complying with management regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the rifle plugging member provided in an embodiment of the present application; Figure 2It is a schematic diagram of the overall structure of the chamber plugging member provided in an embodiment of the present application; Figure 3 It is a schematic diagram of the installation of the rifle plugging member provided in the embodiment of the present application; Figure 4 It is a schematic diagram of the installation of the chamber blocking member provided in the embodiment of the present application; Figure 5 It is a schematic diagram of the overall structure of the tool provided in the embodiment of the present application; Figure 6 It is a schematic diagram of the installation of multiple rifle plugging parts provided in an embodiment of the present application.

[0023] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Rifle plug; 11. Expansion port; 12. Force plane; 2. Chamber plug; 21. Docking port; 22. Strip opening; 3. Gun barrel; 4. First impact piece; 5. Second impact piece; 6. Tool; 61. Tool head; 62. Tool rod; 63. Mounting hole. DETAILED DESCRIPTION

[0024] 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.

[0025] Based on the structure and function of existing firearms, all firearms use the barrel to energize the projectile, and the purpose of deactivating the function is achieved by making the barrel lose its firing function. Therefore, removing the firing function of the barrel has become the most direct and effective means of deactivating the function of firearms. According to relevant regulations, all firearms on public display must comply with relevant regulations and meet the conditions for deactivating exhibits, and even firearms in museums are no exception. However, the deactivation of firearms in the existing relevant standard "Firearm Deactivation Treatment and Safety Prevention Requirements for Exhibition Firearms (GA1015-2012)" will destroy the integrity and integrity of firearms cultural relics, and cannot be applied to the deactivation requirements of firearms cultural relics in museums.

[0026] Reference Figure 1-4, a blocking device for disabling a function of a firearm disclosed in the present application comprises a rifle blocking member 1 and a chamber blocking member 2, wherein the rifle of a barrel 3 is blocked by the rifle blocking member 1, and the chamber of the barrel 3 is blocked by the chamber blocking member 2, wherein the rifle blocking member 1 is embedded in the rifle of the barrel 3 after installation, and the chamber blocking member 2 is embedded in the chamber of the barrel 3 after installation, and in the blocked barrel 3, the rifle blocking member 1, the chamber blocking member 2 and the barrel 3 are located on the same axis. In the present embodiment, one rifle blocking member 1 is provided, and in another feasible embodiment, a plurality of rifle blocking members 1 may be provided. For firearms with high cultural relic value, where there is no or it is difficult to find corresponding ammunition, or where the firearms have high requirements for custody, one rifle blocking member 1 may be provided, and for firearms with low requirements for custody, where the ammunition may be obtained, or where it is easy to make them by oneself, a plurality of rifle blocking members 1 may be provided, and the installation and removal of the rifle blocking member 1 and the chamber blocking member 2 may be carried out by using corresponding impact members.

[0027] Specifically, the rifle plugging piece 1 and the chamber plugging piece 2 are both hollow tubular structures, wherein both ends of the rifle plugging piece 1 are provided with expansion ports 11, the caliber of the expansion port 11 gradually decreases from the end of the rifle plugging piece 1 to the middle thereof, that is, the expansion port 11 is trumpet-shaped, and the two expansion ports 11 are connected by a channel, the diameter of the channel is the same as the minimum caliber of the expansion port 11, and after the rifle plugging piece 1 is loaded into the rifle, two first impact pieces 4 are used to impact from both ends at the same time, forcing the metal at the expansion port 11 to deform, fit tightly with the barrel 3 and embed into the rifling, and the edges at both ends are close to the inner wall of the barrel 3, and the barrel 3 is blocked by the rifle plugging piece 1, and the two ends of the barrel 3 remain connected, wherein the head of the first impact piece 4 is conical and has the same initial shape as the expansion port 11. The taper is the same. The diameters of the rifle plugging piece 1 and the first impact piece 4 are generally smaller than the negative line diameter of the barrel 3 caliber. Considering the influence of cylindricity and straightness, the first impact piece 4 is also required to ensure that the first impact piece 4 can pass through the barrel 3. Its diameter is 0.05mm-1mm smaller than the diameter of the rifle plugging piece 1; the expansion port 11 can be easily deformed and embedded in the rifling under the impact, so that its position inside the rifle is fixed without causing damage to the barrel structure, which can increase the difficulty of disassembly of the rifle plugging piece 1 and is not easy to be disassembled. When an impact piece or a cleaning rod is inserted, it will slide to the inner hole at the expansion port and cannot apply force, thereby increasing the difficulty of removal. When the edge of the expansion port is blocked, the rifle plug 1 will become larger under the action of strong force, and the combination with the rifle will be more firmly.

[0028] Furthermore, a docking port 21 is provided at one end of the chamber blocking piece 2, and the other end is a plane. The caliber of the docking port 21 gradually decreases from the end of the chamber blocking piece 2 to the middle thereof, that is, the docking port 21 is in the shape of a trumpet, and a second impact piece 5 is used to impact the chamber blocking piece 2 to make it enter the chamber. The second impact piece 5 is in a planar structure and fits with the end face of the chamber blocking piece 2. After the chamber blocking piece 2 is installed, the docking port 21 is close to the rifle blocking piece 1, and the minimum caliber of the docking port 21 is not less than the minimum caliber of the expansion port 11, and not greater than the maximum caliber of the expansion port 11. The small end of the docking port 21 is connected with the other end of the chamber blocking piece 2 through a channel. At this time, after a cleaning rod is used to pass through the rifle blocking piece 1, it can pass through the chamber blocking piece 2 without being blocked by the chamber blocking piece 2, and thus the chamber blocking piece 2 cannot be pushed out, thereby increasing the difficulty of disassembling the chamber blocking piece 2.

[0029] It can be understood that the expansion port 11 on the rifle plugging member 1 and the docking port 21 on the chamber plugging member 2 are deformed during the impact process and have a tight fit with the inner bore of the barrel 3. It is not only an important working part that determines whether the plugging is reliable, but also an important part to prevent disassembly.

[0030] Furthermore, a strip opening 22 is provided on one side of the chamber blocking piece 2 along its axial direction, and the strip opening 22 is connected to the docking port 21 and the internal channel on the chamber blocking piece 2. The setting of the strip opening 22 enables the chamber blocking piece 2 to be easily deformed, so that the chamber blocking piece 2 can better adapt to the tapered chamber.

[0031] When the rifle plugging member 1 is provided as one, the installation method of the above-mentioned plugging device comprises the following steps: S1: Clean the gun barrel 3. The oil stain inside the gun barrel 3 needs to be cleaned and quickly air-dried. The rifling plug 1 is installed into the rifling of the gun barrel 3 from one end of the gun barrel 3.

[0032] S2: Two first impact members 4 are inserted from both ends of the barrel 3 respectively, and impact both ends of the rifle plugging member 1 simultaneously, so that the rifle plugging member 1 is deformed after strong pressure or hammering towards each other, and the rifle plugging member 1 is tightly fitted with the rifle to achieve rifle plugging.

[0033] S3: Install the chamber plugging member 2 into the chamber opening of the gun barrel 3 whose rifling is blocked, so that the docking port 21 faces the rifling plugging member 1.

[0034] S4: Use the second impact member 5 to impact the flat end of the chamber blocking member 2, so that the chamber blocking member 2 completely enters the chamber. The strip opening 22 on the chamber blocking member 2 allows the chamber blocking member 2 to be easily deformed, so that the chamber blocking member 2 can better adapt to the tapered chamber, thereby completing the installation of the blocking device.

[0035] Of course, after the blocking device is installed, the assembly quality of the chamber blocking piece 2 and the rifle blocking piece 1 can be further checked to ensure the effectiveness of the installation of the blocking device; specifically, a cleaning rod is used to check the assembly quality, and the cleaning rod is inserted from both ends of the barrel 3 for inspection. If there is no obstruction during the insertion of the cleaning rod, but it directly passes through the inner holes of the rifle blocking piece 1 and the chamber blocking piece 2, then the assembly is qualified, otherwise it is unqualified. The principle is: when there is an obstruction after the cleaning rod is inserted, the chamber blocking piece 2 and the rifle blocking piece 1 can be forced out. If there is no obstruction, no force can be applied during forced ejection, and forced removal cannot be performed; if the assembly is unqualified, the first impact piece 4 is used to continue to impact the expansion port 11 of the rifle blocking piece 1 until there is no obstruction during the insertion of the cleaning rod.

[0036] During disassembly, when the cleaning rod is inserted from the mouth of the barrel 3 and attempts to forcefully eject the rifle plug 1, since the rifle plug 1 has a taper inside, the ejection mechanism is still to force the taper position to deform radially to tighten the assembly with the barrel 3, and it is impossible to directly eject. Therefore, the embodiment of the present application designs a corresponding disassembly solution.

[0037] Specifically, refer to Figure 5 When the rifle plugging member 1 is set to one, the disassembly method includes the following steps: S1: A tool 6 is extended into the rifle to cut the end of the rifle plug 1 away from the chamber plug 2 to form a force plane; wherein the tool 6 is composed of a tool rod 62 and a tool head 61, which are connected by a thread, the tool head 61 is a hollow structure with a twist groove and a blade feature, the tool rod 62 is shaft-shaped, and a guide rod is provided at the head to cooperate with the tool head 61 to prevent the tool head 61 from tilting and damaging the inner bore structure of the barrel 3 during use; by twisting the tool rod 62, a force plane 12 that receives impact can be cut at the front end of the rifle plug 1; the diameter of the tool head 61 is 0.6mm-1mm smaller than the positive line diameter of the barrel 3, the diameter of the tool rod 62 is 0.2mm-0.4mm smaller than the positive line diameter of the barrel 3, and the other end is provided with a mounting hole 63 for mounting a wrench.

[0038] S2: impacting the stress plane 12, specifically using the third impact piece for impacting, the end of the third impact piece is a planar structure and fits with the stress plane, and impacting until the rifle plugging piece 1 contacts the chamber plugging piece 2, and then both are pushed out of the chamber together to complete the disassembly; during the disassembly process, the matching relationship between the third impact piece and the stress plane 12 is checked in real time. If the stress plane 12 deteriorates the pushing effect due to deformation, the first step is implemented again to ensure a regular stress plane 12, and the rifle plugging piece 1 is cut to re-form a stress plane 12 that receives the impact; if the rifle plugging piece 1 cannot push the chamber plugging piece 2 out of the chamber, the first impact piece 4 is used to impact the rifle plugging piece 1 pushed to the chamber position, and wait for it to deform and form a tight fit with the chamber plugging piece 2, and then the third impact piece is inserted from the mouth of the barrel 3 and hammered to force the blockage in the chamber out, and the barrel 3 returns to its original state.

[0039] Reference Figure 6 When there are multiple rifle plugging members 1, in this embodiment, there are three rifle plugging members 1. The installation method of the above-mentioned plugging device includes the following steps: S1: Each rifle plugging member 1 is processed so that the expansion opening 11 at one end thereof is enlarged to be compatible with the rifle of the gun barrel 3, so that the rifle plugging member 1 can be suitable for plugging gun barrels 3 of different sizes.

[0040] S2: Clean the gun barrel 3. The oil stain inside the gun barrel 3 needs to be cleaned and quickly air-dried. Multiple rifle plugging members 1 are sequentially installed into the rifle of the gun barrel 3.

[0041] S3: Fill the rifle of the barrel 3 equipped with the rifle plug 1 with structural glue, and open a through hole along the axis direction of the rifle. The through hole is located on the same axis as the barrel 3, the rifle plug 1 and the chamber plug 2, and the cleaning rod can pass through the through hole when inserted; specifically, the method of opening the through hole is: insert the heated cleaning rod into the rifle of the barrel 3, so that the structural glue quickly forms a surface drying layer, and then the cleaning rod is pulled out to complete the opening of the through hole. The temperature of the cleaning rod is generally controlled within 150°C. If the structural glue has enough drying time, heating treatment is not required. When the diameter of the cleaning rod is smaller than the inner hole of the through hole, the cleaning rod can pass through the through hole when inserted. When the diameter of the cleaning rod is larger than the hole, the through hole will be blocked at the expansion port 11. If the forced impact continues, the expansion port 11 will continue to expand and fit more closely with the rifle; by providing a through hole, protective oil can be injected into the barrel 3 for rust prevention.

[0042] S4: Place the chamber plugging member 2 at the chamber opening of the gun barrel 3 whose rifling is blocked, so that the docking port 21 faces the rifling plugging member 1 .

[0043] S5: Use the second impact piece 5 to impact the flat end of the chamber blocking piece 2, so that the chamber blocking piece 2 can completely enter the chamber. The strip opening 22 on the chamber blocking piece 2 allows the chamber blocking piece 2 to be easily deformed, so that the chamber blocking piece 2 can better adapt to the tapered chamber, thereby completing the installation of the blocking device.

[0044] After the blocking device is installed, the assembly quality of the chamber blocking piece 2 and the rifle blocking piece 1 can be further inspected to ensure the effectiveness of the installation of the blocking device; specifically, a cleaning rod is used to inspect the assembly quality, and the cleaning rod is inserted from both ends of the barrel 3 for inspection. If the cleaning rod has no obstruction during the insertion process and can directly pass through the inner holes of the rifle blocking piece 1 and the chamber blocking piece 2, then the assembly is qualified, otherwise it is unqualified.

[0045] When the rifle plugging member 1 is provided in plurality, the disassembly method comprises the following steps: S1: First, the structural adhesive filled in the rifling of the barrel 3 is softened with a glue remover and then cleaned.

[0046] S2: Use a cutter 6 to extend into the rifle to cut the end of the rifle plug 1 away from the chamber plug 2 to form a force plane 12; S3: Use the third impact member to impact the force-bearing plane 12 until the rifle plugging member 1 contacts the chamber plugging member 2, and then the chamber plugging member 2 and the rifle plugging member 1 are pushed out of the chamber in turn, completing the disassembly.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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 scope of protection of the present application.

Claims

1. A blocking device for disabling a firearm, characterized in that: The invention comprises a rifle plugging member (1) and a chamber plugging member (2), wherein the rifle plugging member (1) and the chamber plugging member (2) are both hollow tubular structures, the rifle plugging member (1) is embedded in the rifle of a gun barrel (3), the chamber plugging member (2) is embedded in the chamber of the gun barrel (3), and the rifle plugging member (1), the chamber plugging member (2) and the gun barrel (3) are located on the same axis.

2. A blocking device for disabling a function of a firearm as claimed in claim 1, characterized in that: Both ends of the rifle plugging member (1) are provided with expansion openings (11), and the diameter of the expansion openings (11) gradually decreases from the end of the rifle plugging member (1) toward the middle thereof.

3. A blocking device for disabling a function of a firearm as claimed in claim 2, characterized in that: The end of the chamber blocking member (2) close to the rifle blocking member (1) is provided with a docking port (21), and the caliber of the docking port (21) gradually decreases from the end of the chamber blocking member (2) toward the middle thereof.

4. A blocking device for disabling a function of a firearm as claimed in claim 3, characterized in that: The minimum caliber of the docking port (21) is not less than the minimum caliber of the expansion port (11), and is not greater than the maximum caliber of the expansion port (11).

5. A blocking device for disabling a function of a firearm as claimed in claim 1, characterized in that: A strip-shaped opening (22) is provided on one side of the chamber blocking member (2) along its axial direction.

6. A blocking device for disabling a function of a firearm according to any one of claims 1 to 5, characterized in that: The rifle blocking member (1) is provided in plurality.

7. A method for installing a plugging device according to any one of claims 1 to 5, characterized in that: The steps include: S1: After cleaning the gun barrel (3), the rifling plug (1) is installed into the rifling of the gun barrel (3); S2: impacting both ends of the rifle blocking member (1) simultaneously, so that the rifle blocking member (1) is deformed to achieve rifle blocking; S3: Installing the chamber plugging member (2) into the chamber opening of the gun barrel (3); S4: impacting the chamber plugging member (2) so that the chamber plugging member (2) completely enters the chamber, thereby completing the installation of the plugging device.

8. A method for installing a plugging device as claimed in claim 6, characterized in that: The steps include: S1: Processing a plurality of rifling plugs (1) to make them fit with the rifling of a gun barrel (3); S2: After cleaning the gun barrel (3), a plurality of rifling plugging members (1) are sequentially installed into the rifling of the gun barrel (3); S3: Filling the rifling of the gun barrel (3) with structural adhesive and opening a through hole along the axial direction of the rifling; S4: Installing the chamber plugging member (2) into the chamber opening of the gun barrel (3); S5: impacting the chamber blocking member (2) so that the chamber blocking member (2) completely enters the chamber, thereby completing the installation of the blocking device.

9. The method for installing a plugging device according to claim 8, characterized in that: The method for opening the through hole in step S3 is: inserting a heated cleaning rod into the rifling of the gun barrel (3) to allow the structural adhesive to quickly form a surface drying layer, and then withdrawing the cleaning rod to complete the opening of the through hole.

10. A method for disassembling a blocking device according to any one of claims 1 to 5, characterized in that: The steps include: S1: cutting the end of the rifle plugging member (1) away from the chamber plugging member (2) to form a force-bearing plane; S2: Impacting the force-bearing plane until the rifle plugging member (1) contacts the chamber plugging member (2), and then the chamber plugging member (2) and the rifle plugging member (1) are pushed out of the chamber in sequence, completing the disassembly.

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