Multi-layer composite structure non-lethal kinetic energy bomb matched with chamber launching tube

Abstract

The invention discloses a multi-layer composite structure non-lethal kinetic energy bomb matched with a wire chamber launching tube. The multi-layer composite structure non-lethal kinetic energy bomb is composed of a bomb head assembly, a bomb body assembly and a launching assembly. The warhead assembly is of a four-layer composite structure, a hemispherical warhead made of high-ductility polyurethane materials and a three-layer polycarbonate foam material warhead are connected in a nested mode through a bearing cavity, the outer layer is wrapped with a polytetrafluoroethylene warhead film with the low friction coefficient, and a double-cavity structure with OC stimulation powder and fluorescent dyeing powder is arranged in the warhead assembly. The projectile body assembly is made of a low-density polyethylene material to be of a deformable structure, and stable spinning is achieved through cooperation of a projectile belt and a wire chamber launching tube. The launching assembly adopts a high-low pressure launching system and is provided with bulk smokeless gunpowder and a mechanical impact type primer. Through material crushing deformation, pre-expansion cavity energy absorption and powder spraying mechanisms, the device has three non-lethal functions of kinetic energy impact, stimulation and dispersion and dyeing marking, and has the characteristics of stable center of gravity, high emission consistency, low safety risk and the like.

Description

Technical Field

[0001] The invention relates to the technical field of riot control ammunition, in particular to a multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube. Background Art

[0002] With the growing demand for public safety, non-lethal kinetic bullets play an important role in riot control, counter-terrorism and law enforcement operations. Traditional non-lethal kinetic bullets mostly use a single material structure (such as rubber bullets or foam bullets) to achieve a dispersal effect through kinetic impact. However, this type of design has significant limitations: first, the material energy absorption efficiency is low, and the impact kinetic energy is difficult to dissipate effectively, which can easily cause accidental injuries to the target; second, the function is single, lacking multi-effect synergistic capabilities such as tear gas and dyeing, and it is difficult to cope with complex scenarios; third, the projectile structure is simple, and after launch, it is easy to cause trajectory deviation due to center of gravity offset or aerodynamic instability, affecting the accuracy of the strike. In addition, most existing ammunition is adapted to smoothbore launchers, which can simplify the design but sacrifice the spin stability of the projectile, further exacerbating the problem of air tumbling.

[0003] In recent years, some improved ammunition has tried to introduce multi-layer structures or functional integration. For example, a soft outer layer and a hard inner core are combined to enhance energy absorption, but the unreasonable design of the material density gradient leads to uneven distribution of impact force, and there is still a risk of injury. Another solution is to build tear gas into the projectile body, but the release mechanism relies on external impact triggering, and there are problems such as low powder diffusion efficiency and delayed action. In terms of the launch system, traditional black powder charges are prone to produce muzzle smoke and residue, which interfere with tactical operations, and it is difficult to balance initial velocity consistency and safety.

[0004] Therefore, there is an urgent need for a non-lethal kinetic bomb that combines high safety, versatility and precision strike capability. Through material innovation, structural optimization and coordinated design of the launch system, we can break through the existing technical bottleneck and meet the needs of modern riot control missions for efficient, reliable and low-risk equipment. Summary of the invention

[0005] The object of the present invention is to provide a multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a multi-layer composite structure non-lethal kinetic bullet equipped with a rifled launch tube, comprising a warhead assembly, a body assembly and a launch assembly, characterized in that: The warhead assembly includes a first-layer warhead, a second-layer warhead, a third-layer warhead, a fourth-layer warhead, a warhead membrane and a pre-expansion cavity. The first-layer warhead is in a hemispherical shape. The first-layer warhead is made of a highly ductile polyurethane material. The lower side of the first-layer warhead is adhered to and connected to the second-layer warhead. The lower side of the second-layer warhead is adhered to and connected to the third-layer warhead. The lower side of the third-layer warhead is adhered to and connected to the fourth-layer warhead. The second-layer warhead is in an upper cylindrical and lower truncated cone structure. The third-layer warhead is in a cylindrical structure. The third-layer warhead includes an upper receiving cavity of the third-layer warhead. , an upper powder cavity of a three-layer bullet, a middle partition of a three-layer bullet, a lower powder cavity of a three-layer bullet, a lower receiving cavity of a three-layer bullet and a powder spraying hole of a three-layer bullet, the upper receiving cavity of the three-layer bullet and the lower receiving cavity of the three-layer bullet are truncated cone-shaped cavities, the upper powder cavity of the three-layer bullet and the lower powder cavity of the three-layer bullet are cylindrical cavities, the middle partition of the three-layer bullet is used to separate the upper powder cavity of the three-layer bullet and the lower powder cavity of the three-layer bullet, the upper powder cavity of the three-layer bullet is filled with OC stimulating powder, the lower powder cavity of the three-layer bullet is filled with fluorescent dyeing powder, the The powder spraying holes of the three-layer bullet penetrate the upper powder cavity of the three-layer bullet and the side wall of the lower powder cavity of the three-layer bullet. The powder spraying holes of the three-layer bullet are densely arranged on the side wall of the upper powder cavity of the three-layer bullet and the side wall of the lower powder cavity of the three-layer bullet. The four-layer bullet is in an upper cone and a lower cylindrical structure. The lower cone of the two-layer bullet is inserted into the upper receiving cavity of the three-layer bullet, and the upper cone of the four-layer bullet is inserted into the lower receiving cavity of the three-layer bullet. The two-layer bullet, the three-layer bullet and the four-layer bullet are all made of polycarbonate foam material. The one-layer bullet and the two-layer bullet are made of polycarbonate foam material. The outer side is wrapped with a bullet membrane, the bullet membrane is a sleeve with a sealed upper part and an open lower part, the bullet membrane is made of polytetrafluoroethylene material, the bullet membrane includes a bullet membrane spherical head, a bullet membrane columnar part and a bullet membrane connecting part, the inner side of the bullet membrane spherical head is wrapped with a layer of bullet, the inner side of the upper part of the bullet membrane columnar part is wrapped with two layers of bullet, the cavity surrounded by the inner wall surface of the middle and lower part of the bullet membrane columnar part and the outer side of the three layers of bullet is the pre-expansion cavity, and the side wall thickness of the bullet membrane connecting part is half of the side wall thickness of the bullet membrane columnar part; The lower side of the warhead assembly is connected to the body assembly, and the body assembly is made of low-density polyethylene material. The body assembly includes an upper body, an elastic belt and a lower body. The upper body includes an upper body receiving cavity, an upper receiving ring of the upper body and a lower receiving ring of the upper body. The upper body receiving cavity is used to clamp four layers of warheads. The upper receiving ring of the upper body abuts against the lower end surface of the columnar part of the warhead membrane. The lower receiving ring of the upper body abuts against the lower end surface of the connecting part of the warhead membrane. The connecting part of the upper body and the lower body is provided with an elastic belt, which is a protruding cylindrical structure. The lower body includes a lower body concave ring, a lower body hollow cavity and a lower concave cavity of the lower body. The lower body concave ring is a circular ring with a semicircular cross-section. The warhead membrane forms the warhead assembly and the body assembly into a whole through a heat-setting and shrinking process. The lower side of the projectile assembly is mechanically plugged with a firing assembly, the firing assembly includes a shell component and a charge, the shell component is used to connect and support the lower projectile, the shell component includes a shell, a shell convex ring, a shell bottom edge, a primer hole, a high-pressure chamber, a fire transfer hole and a low-pressure chamber, the upper end face of the shell abuts against the lower side of the bullet belt, a shell convex ring with a semicircular cross-section is provided on the inner side of the upper part of the shell, the shell convex ring is squeezed into the lower projectile concave ring, the side wall of the lower projectile abuts against the inner wall of the shell, the contact surface between the shell convex ring and the lower projectile concave ring, the contact surface between the lower projectile side wall and the inner wall of the shell are sealed by hot melt adhesive, and the shell bottom A cartridge case bottom edge is protruding from the part, a cylindrical primer hole is provided at the axis center of the bottom end face of the cartridge case, a cylindrical high-pressure chamber is integrated inside the cartridge case and on the upper side of the primer hole, a cylindrical fire transfer hole is provided at the axis center of the upper end face of the high-pressure chamber, the fire transfer hole is sealed by a brass diaphragm, the cartridge case element is filled with charge, the charge includes a primer and propellant, the primer is a mechanical impact primer, the primer is riveted inside the primer hole, the propellant is filled inside the high-pressure chamber, the propellant is bulk smokeless powder, and the cavity formed by the inner side of the cartridge case, the outer side of the high-pressure chamber and the lower concave cavity of the lower projectile body is the low-pressure chamber.

[0007] Preferably, the warhead assembly, the body assembly and the launching assembly are all axisymmetric structures, and the central axes of the warhead assembly, the body assembly and the launching assembly coincide with each other.

[0008] Preferably, the elongation at break of the one-layer warhead is 400%, and the material density of the two-layer warhead, the three-layer warhead and the four-layer warhead decreases successively. The two-layer warhead, the three-layer warhead, the four-layer warhead and the one-layer warhead work together to achieve a large amount of dissipation of impact kinetic energy through material crushing and irreversible deformation.

[0009] Preferably, the contact surface between the first-layer warhead and the second-layer warhead, the contact surface between the second-layer warhead and the third-layer warhead, the contact surface between the third-layer warhead and the fourth-layer warhead, and the contact surface between the fourth-layer warhead and the upper body are all connected by 814 glue.

[0010] Preferably, the friction coefficient of the bullet membrane against the rifle launch tube is less than 0.3, the three-layer bullet is squeezed and expanded into the pre-expansion cavity, and the bullet membrane ruptures after hitting the target, pushing the one-layer bullet, the two-layer bullet, the three-layer bullet, and the four-layer bullet to implement a secondary impact on the target. At the same time, the OC stimulating powder filled in the upper powder cavity of the three-layer bullet and the fluorescent dyeing powder filled in the lower powder cavity of the three-layer bullet are sprayed at high speed from the powder spraying hole of the three-layer bullet, respectively realizing the stimulation and dispersion and dyeing marking of the target.

[0011] Preferably, the projectile assembly adopts a reversible deformation design, which can not only withstand the launch pressure but also avoid the risk of accidental injury to living targets caused by hard components. The hollow cavity in the lower projectile body is used to reduce the total weight of the projectile assembly.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The four-layer composite warhead designed in the present invention is made of high-ductility polyurethane material (one-layer warhead) and polycarbonate foam material (two-layer, three-layer, and four-layer warheads). The warhead membrane adopts a heat-setting and shrinking process to process the four-layer warhead and the body assembly into a whole, so that the projectile composed of the warhead assembly and the body assembly can be smoothly rotated in the rifled launch tube. In addition, the friction coefficient of the warhead membrane is very small, so that the projectile has good exit consistency; the material density of the two-layer warhead, the three-layer warhead, and the four-layer warhead decreases successively, so that the center of gravity of the entire projectile can be centered, effectively avoiding the possible mid-air flipping of the projectile. The rolling problem is solved, and the striking accuracy is improved; when the warhead membrane impacts the target, the first-layer warhead, the second-layer warhead, the third-layer warhead and the fourth-layer warhead are all squeezed, and the internal microstructure of each layer of the warhead is sheared or buckled to absorb part of the impact energy, and at the same time, the three-layer warhead is forced to expand under pressure and squeeze into the pre-expansion cavity, further absorbing part of the impact energy. In addition, the elongation at break of the first-layer warhead is 400%, and the second-layer warhead, the third-layer warhead, the fourth-layer warhead and the first-layer warhead work together, and the impact kinetic energy of the projectile on the living target is greatly dissipated through material crushing and irreversible deformation, so that the use safety of the present invention is further improved; 2. When the present invention impacts a living target, the warhead membrane realizes a kinetic strike on the target and then ruptures. The first-layer warhead, the second-layer warhead, the third-layer warhead, and the fourth-layer warhead realize a secondary kinetic strike on the target under the inertia of the warhead assembly; the warhead membrane ruptures after impacting the target, and the OC irritating powder filled in the upper powder cavity of the three-layer warhead and the fluorescent dyeing powder filled in the lower powder cavity of the three-layer warhead are sprayed at high speed from the powder spraying holes of the three-layer warhead, respectively realizing irritation and dispersal and dyeing marking of the target, so that the present invention has the triple non-lethal effects of kinetic strike, tear dispersal and dyeing marking; 3. The projectile assembly of the present invention is made of low-density polyethylene, which can not only withstand the launch pressure of the rifle launch tube, but also prevent the hard parts from becoming secondary killing elements, thereby further reducing the use risk of the present invention; 4. The present invention is based on the firing of a rifled anti-riot gun. The bullet belt and the rifling of the rifled anti-riot gun cooperate with each other to give the bullet assembly and the body assembly a certain spin speed, thereby effectively avoiding tumbling in the air. At the same time, the center of gravity and the thrust center of the present invention coincide, which can significantly improve its striking accuracy; 5. The present invention adopts a high-low pressure firing system and uses bulk smokeless powder as the propellant, which can obtain a more consistent exit velocity and less muzzle smoke, which will not interfere with the normal tactical actions of the user. The present invention does not produce excessive gunpowder residue in the barrel, thereby not affecting repeated shooting and projectile accuracy, thereby making the present invention have a higher battlefield applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a 3 / 4 stereoscopic schematic diagram of the three-layer warhead 1-3 in the present invention; Figure 4 It is a 3 / 4 stereoscopic schematic diagram of the warhead membrane 1-5 in the present invention; Figure 5 It is a 3 / 4 stereoscopic schematic diagram of the projectile assembly 2 of the present invention; Figure 6 It is a structural schematic diagram of the transmitting component 3 in the present invention; Figure 7 It is a three-dimensional schematic diagram of the transmitting component 3 in the present invention.

[0014] In the figure: 1. bullet assembly, 1-1. one-layer bullet, 1-2. two-layer bullet, 1-3. three-layer bullet, 1-3-1. upper receiving cavity of three-layer bullet, 1-3-2. upper powder cavity of three-layer bullet, 1-3-3. middle partition of three-layer bullet, 1-3-4. lower powder cavity of three-layer bullet, 1-3-5. lower receiving cavity of three-layer bullet, 1-3-6. powder injection hole of three-layer bullet, 1-4. four-layer bullet, 1-5. bullet membrane, 1-5-1. ball head of bullet membrane, 1-5-2. columnar part of bullet membrane, 1-5-3. connecting part of bullet membrane, 1-6. pre-expansion cavity, 2. projectile assembly, 2-1. upper projectile, 2-1-1, upper projectile receiving cavity, 2-1-2, upper projectile upper receiving ring, 2-1-3, upper projectile lower receiving ring, 2-2, bullet belt, 2-3, lower projectile, 2-3-1, lower projectile concave ring, 2-3-2, lower projectile hollow cavity, 2-3-3, lower projectile lower concave cavity, 3, firing assembly, 3-1, cartridge case component, 3-1-1, cartridge case, 3-1-2, cartridge case convex ring, 3-1-3, cartridge case bottom edge, 3-1-4, primer hole, 3-1-5, high-pressure chamber, 3-1-6, fire transfer hole, 3-1-7, low-pressure chamber, 3-2, charge, 3-2-1, primer, 3-2-2, propellant. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-7The present invention provides a technical solution: a multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube, including a warhead assembly 1, a body assembly 2 and a launch assembly 3.

[0017] Combination Figure 1-Figure 4The warhead assembly 1 includes a first-layer warhead 1-1, a second-layer warhead 1-2, a third-layer warhead 1-3, a fourth-layer warhead 1-4, a warhead membrane 1-5 and a pre-expansion cavity 1-6. The first-layer warhead 1-1 is in a hemispherical shape. The first-layer warhead 1-1 is made of a highly ductile polyurethane material. The lower side of the first-layer warhead 1-1 is adhered and connected to the second-layer warhead 1-2. The lower side of the second-layer warhead 1-2 is adhered and connected to the third-layer warhead 1-3. The lower side of the third-layer warhead 1-3 is adhered and connected to the fourth-layer warhead 1-4. The second-layer warhead 1-2 is in an upper cylindrical and lower truncated cone structure. The three-layer warhead 1-3 is in a cylindrical structure. The three-layer warhead 1-3 includes a three-layer warhead upper receiving cavity 1-3-1, a three-layer warhead upper receiving cavity 1-3-1, and a three-layer warhead upper receiving cavity 1-3-2. The upper powder cavity 1-3-2, the middle partition 1-3-3 of the three-layer bullet, the lower powder cavity 1-3-4 of the three-layer bullet, the lower receiving cavity 1-3-5 of the three-layer bullet and the powder spraying hole 1-3-6 of the three-layer bullet, the upper receiving cavity 1-3-1 of the three-layer bullet and the lower receiving cavity 1-3-5 of the three-layer bullet are truncated cone-shaped cavities, the upper powder cavity 1-3-2 of the three-layer bullet and the lower powder cavity 1-3-4 of the three-layer bullet are cylindrical cavities, the middle partition 1-3-3 of the three-layer bullet is used to separate the upper powder cavity 1-3-2 of the three-layer bullet and the lower powder cavity 1-3-4 of the three-layer bullet, the upper powder cavity 1-3-2 of the three-layer bullet is filled with OC stimulating powder, the lower powder cavity 1-3-4 of the three-layer bullet is filled with fluorescent dyeing powder, the The three-layer bullet powder injection holes 1-3-6 penetrate the side walls of the upper powder cavity 1-3-2 and the lower powder cavity 1-3-4 of the three-layer bullet. The three-layer bullet powder injection holes 1-3-6 are densely arranged on the side walls of the upper powder cavity 1-3-2 and the lower powder cavity 1-3-4 of the three-layer bullet. The four-layer bullet 1-4 is in an upper cone and lower cylindrical structure. The lower cone of the two-layer bullet 1-2 is inserted into the upper receiving cavity 1-3-1 of the three-layer bullet. The upper cone of the four-layer bullet 1-4 is inserted into the lower receiving cavity 1-3-5 of the three-layer bullet. The two-layer bullet 1-2, the three-layer bullet 1-3 and the four-layer bullet 1-4 are all made of polycarbonate foam material. The one-layer bullet 1-1 and the two-layer bullet 1-2 The outer side is wrapped with a bullet film 1-5, and the bullet film 1-5 is a sleeve with a sealed upper part and an open lower part. The bullet film 1-5 is made of polytetrafluoroethylene material. The bullet film 1-5 includes a bullet film ball head 1-5-1, a bullet film columnar part 1-5-2 and a bullet film connecting part 1-5-3. The inner side of the bullet film ball head 1-5-1 is wrapped with a layer of bullet 1-1, and the inner side of the upper part of the bullet film columnar part 1-5-2 is wrapped with two layers of bullets 1-2. The cavity surrounded by the lower inner wall surface of the bullet film columnar part 1-5-2 and the outer side of the three-layer bullet 1-3 is the pre-expansion cavity 1-6, and the side wall thickness of the bullet film connecting part 1-5-3 is half of the side wall thickness of the bullet film columnar part 1-5-2; Combination Figure 2 and Figure 5The lower side of the warhead assembly 1 is connected to the body assembly 2, and the body assembly 2 is made of low-density polyethylene material. The body assembly 2 includes an upper body 2-1, an elastic belt 2-2 and a lower body 2-3. The upper body 2-1 includes an upper body receiving cavity 2-1-1, an upper body upper receiving ring 2-1-2 and an upper body lower receiving ring 2-1-3. The upper body receiving cavity 2-1-1 is clamped with a four-layer warhead 1-4, and the upper body upper receiving ring 2-1-2 is against the lower end surface of the warhead membrane columnar portion 1-5-2. The receiving ring 2-1-3 on the lower side of the body abuts against the lower end surface of the warhead membrane connecting part 1-5-3, and the connecting part of the upper warhead 2-1 and the lower warhead 2-3 is provided with an elastic belt 2-2, and the elastic belt 2-2 is a protruding cylindrical structure, and the lower warhead 2-3 comprises a lower warhead concave ring 2-3-1, a lower warhead hollow cavity 2-3-2 and a lower warhead lower concave cavity 2-3-3, and the lower warhead concave ring 2-3-1 is a circular ring with a semicircular cross section, and the warhead membrane 1-5 forms the warhead assembly 1 and the warhead assembly 2 into a whole through a heat-setting shrinkage process; Combination Figure 2 , Figure 6 and Figure 7The lower side of the projectile assembly 2 is mechanically plugged with a firing assembly 3, and the firing assembly 3 includes a shell component 3-1 and a charge 3-2. The shell component 3-1 is used to connect and support the lower projectile 2-3. The shell component 3-1 includes a shell 3-1-1, a shell convex ring 3-1-2, a shell bottom edge 3-1-3, a primer hole 3-1-4, a high-pressure chamber 3-1-5, a fire transfer hole 3-1-6 and a low-pressure chamber 3-1-7. The upper end surface of the shell 3-1-1 A cartridge case convex ring 3-1-2 with a semicircular cross section is arranged on the inner side of the upper part of the cartridge case 3-1-1, and the cartridge case convex ring 3-1-2 is squeezed into the lower projectile body concave ring 2-3-1. The side wall of the lower projectile body 2-3 is against the inner wall of the cartridge case 3-1-1. The contact surface between the cartridge case convex ring 3-1-2 and the lower projectile body concave ring 2-3-1, and the contact surface between the side wall of the lower projectile body 2-3 and the inner wall of the cartridge case 3-1-1 are sealed by hot melt adhesive. The bottom edge 3-1-3 of the cartridge case is protruding from the bottom, a cylindrical bottom fire hole 3-1-4 is provided at the axis center of the bottom end face of the cartridge case 3-1-1, a cylindrical high pressure chamber 3-1-5 is integrated inside the cartridge case 3-1-1 and on the upper side of the bottom fire hole 3-1-4, a cylindrical fire transfer hole 3-1-6 is provided at the axis center of the upper end face of the high pressure chamber 3-1-5, and the fire transfer hole 3-1-6 is sealed by a brass diaphragm, and a charge 3-2 is filled inside the cartridge case element 3-1, and the charge 3-2 is sealed by a brass diaphragm. 3-2 includes a primer 3-2-1 and a propellant 3-2-2, wherein the primer 3-2-1 is a mechanical impact primer, the primer 3-2-1 is riveted inside the primer hole 3-1-4, the propellant 3-2-2 is loaded inside the high-pressure chamber 3-1-5, and the propellant 3-2-2 is bulk smokeless powder. The cavity formed by the inner side of the cartridge case 3-1-1, the outer side of the high-pressure chamber 3-1-5 and the lower concave cavity 2-3-3 of the lower body is the low-pressure chamber 3-1-7.

[0018] Combination Figure 1 and Figure 2 The warhead assembly 1, the body assembly 2 and the launching assembly 3 are all axisymmetric structures, and the central axes of the warhead assembly 1, the body assembly 2 and the launching assembly 3 coincide with each other.

[0019] In this embodiment, the elongation at break of the one-layer warhead 1-1 is 400%, and the material densities of the two-layer warhead 1-2, the three-layer warhead 1-3 and the four-layer warhead 1-4 decrease successively. The two-layer warhead 1-2, the three-layer warhead 1-3, the four-layer warhead 1-4 and the one-layer warhead 1-1 work together to achieve a large amount of dissipation of impact kinetic energy through material crushing and irreversible deformation.

[0020] In this embodiment, the contact surface between the first-layer warhead 1-1 and the second-layer warhead 1-2, the contact surface between the second-layer warhead 1-2 and the third-layer warhead 1-3, the contact surface between the third-layer warhead 1-3 and the fourth-layer warhead 1-4, and the contact surface between the fourth-layer warhead 1-4 and the upper body 2-1 are all connected by 814 glue.

[0021] In this embodiment, the friction coefficient of the bullet membrane 1-5 against the rifled launch tube is less than 0.3, and the three-layer bullet 1-3 is squeezed and expanded into the pre-expansion cavity 1-6. The bullet membrane 1-5 ruptures after hitting the target, pushing the first-layer bullet 1-1, the second-layer bullet 1-2, the third-layer bullet 1-3, and the fourth-layer bullet 1-4 to implement a secondary impact on the target. At the same time, the OC stimulating powder filled in the upper powder cavity 1-3-2 of the three-layer bullet and the fluorescent dyeing powder filled in the lower powder cavity 1-3-4 of the three-layer bullet are sprayed at high speed from the powder spraying hole 1-3-6 of the three-layer bullet, respectively realizing the stimulation and dispersion and dyeing marking of the target.

[0022] In this embodiment, the projectile assembly 2 adopts a reversible deformation design, which can not only withstand the launch pressure, but also avoid the risk of accidental injury to living targets caused by hard components. The hollow cavity 2-3-2 in the lower projectile body is used to reduce the total weight of the projectile assembly 2.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer composite non-lethal kinetic bullet equipped with a rifled launch tube, comprising a bullet assembly (1), a body assembly (2) and a launch assembly (3), characterized in that: The warhead assembly (1) comprises a first-layer warhead (1-1), a second-layer warhead (1-2), a third-layer warhead (1-3), a fourth-layer warhead (1-4), a warhead membrane (1-5) and a pre-expansion chamber (1-6); the first-layer warhead (1-1) is in the shape of a hemisphere; the first-layer warhead (1-1) is made of a highly ductile polyurethane material; the first-layer warhead (1-1) is adhesively connected to the second-layer warhead (1-2) at the bottom; the second-layer warhead (1-2) is adhesively connected to the third-layer warhead (1-3) at the bottom; the third-layer warhead (1-3) is adhesively connected to the fourth-layer warhead (1-4) at the bottom; the second-layer warhead (1-2) is in the shape of an upper cylinder and a lower truncated cone; the third-layer warhead (1-3) is in the shape of a cylinder; the third-layer warhead (1-1) is in the shape of a cylinder; -3) comprises a three-layer bullet upper receiving cavity (1-3-1), a three-layer bullet upper powder cavity (1-3-2), a three-layer bullet middle partition (1-3-3), a three-layer bullet lower powder cavity (1-3-4), a three-layer bullet lower receiving cavity (1-3-5) and a three-layer bullet powder spraying hole (1-3-6), wherein the three-layer bullet upper receiving cavity (1-3-1) and the three-layer bullet lower receiving cavity (1-3-5) are truncated cone-shaped cavities, the three-layer bullet upper powder cavity (1-3-2) and the three-layer bullet lower powder cavity (1-3-4) are cylindrical cavities, the three-layer bullet middle partition (1-3-3) is used to separate the three-layer bullet upper powder cavity (1-3-2) and the three-layer bullet lower powder cavity (1-3-4), and the three-layer bullet upper The powder cavity (1-3-2) is filled with OC stimulating powder, the lower powder cavity (1-3-4) of the three-layer bullet is filled with fluorescent dye powder, the three-layer bullet powder injection hole (1-3-6) penetrates the upper powder cavity (1-3-2) of the three-layer bullet and the side wall of the lower powder cavity (1-3-4) of the three-layer bullet, the three-layer bullet powder injection hole (1-3-6) is densely arranged on the side wall of the upper powder cavity (1-3-2) of the three-layer bullet and the side wall of the lower powder cavity (1-3-4) of the three-layer bullet, the four-layer bullet (1-4) is in the shape of an upper cone and a lower cylinder, the lower cone of the two-layer bullet (1-2) is inserted into the upper receiving cavity (1-3-1) of the three-layer bullet, and the upper cone of the four-layer bullet (1-4) is inserted into the lower receiving cavity (1-3-5) of the three-layer bullet. ), the two-layer warhead (1-2), the three-layer warhead (1-3) and the four-layer warhead (1-4) are all made of polycarbonate foam material; the outer sides of the one-layer warhead (1-1) and the two-layer warhead (1-2) are wrapped with a warhead membrane (1-5); the warhead membrane (1-5) is a sleeve with a sealed upper portion and an open lower portion; the warhead membrane (1-5) is made of polytetrafluoroethylene material; the warhead membrane (1-5) comprises a warhead membrane ball head (1-5-1), a warhead membrane columnar portion (1-5-2) and a warhead membrane connecting portion (1-5-3); the inner side of the warhead membrane ball head (1-5-1) wraps a single-layer warhead (1-1); the inner side of the upper part of the warhead membrane columnar portion (1-5-2) wraps a two-layer warhead (1-2);The cavity enclosed by the inner wall surface of the lower middle part of the bullet membrane columnar part (1-5-2) and the outer side of the three-layer bullet (1-3) is the pre-expansion cavity (1-6), and the side wall thickness of the bullet membrane connecting part (1-5-3) is half the side wall thickness of the bullet membrane columnar part (1-5-2); The lower side of the warhead assembly (1) is connected to the body assembly (2); the body assembly (2) is made of low-density polyethylene material; the body assembly (2) comprises an upper body (2-1), an elastic belt (2-2) and a lower body (2-3); the upper body (2-1) comprises an upper body receiving cavity (2-1-1), an upper body upper receiving ring (2-1-2) and an upper body lower receiving ring (2-1-3); the upper body receiving cavity (2-1-1) is used to hold a four-layer warhead (1-4); the upper body upper receiving ring (2-1-2) abuts against the lower end surface of the warhead membrane columnar portion (1-5-2); the upper The receiving ring (2-1-3) on the lower side of the projectile body abuts against the lower end surface of the projectile membrane connecting part (1-5-3); the connecting part of the upper projectile body (2-1) and the lower projectile body (2-3) is provided with an elastic belt (2-2); the elastic belt (2-2) is a protruding cylindrical structure; the lower projectile body (2-3) comprises a lower projectile body concave ring (2-3-1), a lower projectile body hollow cavity (2-3-2) and a lower projectile body lower concave cavity (2-3-3); the lower projectile body concave ring (2-3-1) is a circular ring with a semicircular cross section; the projectile membrane (1-5) forms the projectile assembly (1) and the projectile body assembly (2) into a whole through a heat-setting shrinking process; The lower side of the projectile assembly (2) is mechanically plugged with a firing assembly (3), the firing assembly (3) comprising a shell component (3-1) and a charge (3-2), the shell component (3-1) being used to connect and support the lower projectile (2-3), the shell component (3-1) comprising a shell (3-1-1), a shell convex ring (3-1-2), a shell bottom edge (3-1-3), a primer hole (3-1-4), a high pressure chamber (3-1-5), a fire transfer hole (3-1-6) and a low pressure chamber (3-1-7), the shell (3-1-1) 1) The upper end surface abuts against the lower side of the elastic band (2-2); a cartridge case convex ring (3-1-2) with a semicircular cross section is arranged on the inner side of the upper part of the cartridge case (3-1-1); the cartridge case convex ring (3-1-2) is squeezed into the lower projectile body concave ring (2-3-1); the side wall of the lower projectile body (2-3) abuts against the inner wall of the cartridge case (3-1-1); the contact surface between the cartridge case convex ring (3-1-2) and the lower projectile body concave ring (2-3-1), and the contact surface between the side wall of the lower projectile body (2-3) and the inner wall of the cartridge case (3-1-1) are sealed by hot melt adhesive; the cartridge case (3-1-1) is provided with a cartridge case convex ring (3-1-2) having a semicircular cross section; the cartridge case convex ring (3-1-2) is squeezed into the lower projectile body concave ring (2-3-1); the side wall of the lower projectile body (2-3) and the inner wall of the cartridge case (3-1-1) are sealed by hot melt adhesive; 1) A cartridge case bottom edge (3-1-3) is protruding from the bottom, a cylindrical primer hole (3-1-4) is provided at the axis center of the bottom end surface of the cartridge case (3-1-1), a cylindrical high-pressure chamber (3-1-5) is integrally provided inside the cartridge case (3-1-1) and on the upper side of the primer hole (3-1-4), a cylindrical fire transfer hole (3-1-6) is provided at the axis center of the upper end surface of the high-pressure chamber (3-1-5), the fire transfer hole (3-1-6) is sealed by a brass diaphragm, and a charge (3-2) is filled inside the cartridge case element (3-1), the charge (3-2) comprises a primer (3-2-1) and propellant (3-2-2), wherein the primer (3-2-1) is a mechanical impact primer, the primer (3-2-1) is riveted inside the primer hole (3-1-4), the propellant (3-2-2) is loaded inside the high-pressure chamber (3-1-5), the propellant (3-2-2) is bulk smokeless powder, and the cavity formed by the inner side of the cartridge case (3-1-1), the outer side of the high-pressure chamber (3-1-5) and the lower concave cavity (2-3-3) of the lower body is the low-pressure chamber (3-1-7).

2. The multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube according to claim 1, characterized in that: The warhead assembly (1), the projectile body assembly (2) and the launching assembly (3) are all axisymmetric structures, and the central axes of the warhead assembly (1), the projectile body assembly (2) and the launching assembly (3) coincide with each other.

3. The multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube according to claim 1, characterized in that: The breaking elongation of the one-layer bullet (1-1) is 400%, and the material densities of the two-layer bullet (1-2), the three-layer bullet (1-3), and the four-layer bullet (1-4) decrease in sequence; the two-layer bullet (1-2), the three-layer bullet (1-3), the four-layer bullet (1-4) and the one-layer bullet (1-1) work in synergy to achieve large-scale dissipation of impact kinetic energy through material crushing and irreversible deformation.

4. The multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube according to claim 1, characterized in that: The contact surface between the first-layer bullet (1-1) and the second-layer bullet (1-2), the contact surface between the second-layer bullet (1-2) and the third-layer bullet (1-3), the contact surface between the third-layer bullet (1-3) and the fourth-layer bullet (1-4), and the contact surface between the fourth-layer bullet (1-4) and the upper bullet body (2-1) are all connected by adhesive bonding using 814 glue.

5. The multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube according to claim 1, characterized in that: The friction coefficient of the bullet film (1-5) on the rifled launch tube is less than 0.

3. The three-layer bullet (1-3) is squeezed and expanded into the pre-expansion cavity (1-6). The bullet film (1-5) ruptures after impacting the target, pushing the first-layer bullet (1-1), the second-layer bullet (1-2), the third-layer bullet (1-3), and the fourth-layer bullet (1-4) to perform a secondary impact on the target. At the same time, the OC stimulating powder filled in the upper powder cavity (1-3-2) of the three-layer bullet and the fluorescent dyeing powder filled in the lower powder cavity (1-3-4) of the three-layer bullet are sprayed at high speed from the powder spraying hole (1-3-6) of the three-layer bullet, respectively realizing the stimulation and dispersion and dyeing marking of the target.

6. The multi-layer composite structure non-lethal kinetic energy bullet equipped with a rifled launch tube according to claim 1, characterized in that: The projectile assembly (2) adopts a reversible deformation design, which can withstand the launch pressure and avoid the risk of accidental injury to living targets caused by hard components. The hollow cavity (2-3-2) in the lower projectile body is used to reduce the total weight of the projectile assembly (2).

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