CN111076624A

CN111076624A - Modular injection bullet with replaceable medicine tube

Info

Publication number: CN111076624A
Application number: CN201911142489.5A
Authority: CN
Inventors: 周克栋; 张岩; 赫雷; 张迪; 沈超
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-04-28
Anticipated expiration: 2039-11-20
Also published as: CN111076624B

Abstract

A modular injection bullet with a replaceable cartridge comprises a needle head, a hood, a cartridge connecting piece, a cartridge component, an injection power component, a firing component and a tail wing; the needle head is connected with the medicine tube connecting piece; the wind cap is sleeved outside the needle head and the medicine tube connecting piece; the medicine tube assembly comprises a medicine accommodating tube, a plunger and a plunger retaining sheet; the medicine tube connecting piece is connected to the front end of the medicine accommodating tube; the medicament accommodating tube accommodates a medicament; the plunger and the plunger stop piece are arranged at the rear side in the medicament containing pipe; the plunger stop piece is connected to the rear end of the plunger; the injection power component comprises a medicine chamber, a primer and a propellant powder; the powder chamber is connected to the rear end of the medicament accommodating tube, the primer is arranged in a primer hole at the rear end of the powder chamber, and the propellant powder is arranged in an accommodating cavity at the front end of the powder chamber; the tail wing is connected to the rear end of the medicine chamber; the firing component comprises a firing pin spring and a firing pin; the firing pin spring and the firing pin are positioned in a hole in front of the tail wing; the hole is communicated with the primer hole; the firing pin spring is positioned between the primer and the firing pin; the present invention may be used for different purposes.

Description

Modular injection bullet with replaceable medicine tube

Technical Field

The invention belongs to the technical field of injection bullets, and particularly relates to a modular injection bullet with a replaceable medicine tube.

Background

At present, the operation form of modern war has been changed significantly, large-scale military operations are reduced, special operations and the like are important components of future war, and when tasks such as information collection, anti-terrorism, arrest and the like are executed, the injection bomb can rapidly inject targets at a certain distance so as to achieve the purpose of rapidly subduing or controlling the targets and ensure the smooth completion of the tasks. Meanwhile, in the aspect of animal protection, the remote injection bomb is utilized, so that the animals can be anesthetized and treated at a long distance, and the method is of great help to relevant work.

Chinese patent publication No. CN2722189Y discloses an anesthesia bullet, which comprises a bullet and a bullet case, wherein when the bullet hits a target, a rubber layer outside the bullet is blocked and stops moving, and a stainless steel hollow steel needle inside the bullet pierces a plastic protective layer and a rubber layer by inertia to inject into the skin of the target, and meanwhile, under the action of an impact force, an anesthetic liquid medicine in the bullet is injected into a human body or an animal body through the stainless steel hollow steel needle. However, the anesthetic bullet completely depends on the inertia of the bullet to inject the medicine, and the human body has large resistance during the injection process, and the bullet is difficult to reliably complete the injection. Chinese patent publication No. CN1032075 discloses a shotgun shot, which is shot by using a shotgun, after hitting a target, a sealing cap on a needle is blocked and moves backwards, a small hole is opened, and compressed gas inside the small hole is expanded, so that the injection process is completed. However, when the injection bomb is used, liquid medicine needs to be prepared on site, the preparation time is long in the using process, the injection bomb does not have a modularization function, and different injection bombs are required to be used for different targets, so that the injection bomb is not convenient enough.

Disclosure of Invention

The invention aims to provide a modular injection bullet with a replaceable medicine tube, which is used for injecting medicine into a target after being emitted by a launching appliance in a long distance and has the function of being used quickly by replacing a few parts according to different targets and tasks.

The technical solution for realizing the purpose of the invention is as follows:

a modular injection bullet with a replaceable cartridge comprises a needle head, a hood, a cartridge connecting piece, a cartridge component, an injection power component, a firing component and a tail wing;

the needle head is connected with the medicine tube connecting piece; the air cap is sleeved outside the needle head and the medicine tube connecting piece;

the medicine tube assembly comprises a medicine accommodating tube, a plunger and a plunger retaining sheet; the medicine tube connecting piece is connected to the front end of the medicine accommodating tube; the medicament containing tube contains medicament; the plunger and the plunger retaining plate are arranged on the rear side in the medicament containing pipe to seal the medicament; the plunger catch is connected to the rear end of the plunger; the front end surface of the medicament accommodating tube is provided with a notch;

the injection power assembly comprises a medicine chamber, a primer and a propellant powder; the powder chamber is connected to the rear end of the medicament accommodating tube, the primer is arranged in a primer hole at the rear end of the powder chamber, and the propellant powder is arranged in an accommodating cavity at the front end of the powder chamber; a fire transfer hole is arranged in the explosive chamber and is used for communicating the primer with the propellant powder; a boss for bottom fire impact is arranged in the explosive chamber; the tail wing is connected to the rear end of the medicine chamber;

the firing assembly comprises a firing pin spring and a firing pin; the firing pin spring and the firing pin are positioned in a hole in front of the tail wing; the holes are communicated with the primer holes; the firing pin spring is positioned between the primer and the firing pin and is in a pre-compression state, so that the firing pin and the primer are in a non-contact state.

Compared with the prior art, the invention has the following remarkable advantages:

(1) the invention adopts gunpowder gas as an injection power source, can ensure enough energy to overcome injection resistance and complete injection action.

(2) The drug tube assembly can be prefabricated with various drugs in advance and can be stored for a long time, and can be directly combined with other modules to be used according to actual needs without configuring the drugs on site, so that the working efficiency is improved.

(3) The needle head, the hood, the medicine tube module, the empennage and other modules of the invention can be replaced according to the actual use condition, so that the injection bomb which is most suitable for the current task is combined, and the current task can be completed more conveniently and efficiently.

Drawings

Fig. 1 is a sectional view of the general structure of the present invention.

FIG. 2 is a schematic view of the connection and assembly of the needle, the hood, the drug tube connector and the drug containing tube.

Fig. 3(a-c) are schematic views of various different shapes of hoods that can be modularly replaced.

Fig. 4 is a schematic structural view of the cartridge assembly and the launching power assembly.

Fig. 5 is a schematic view of the structure of the connecting piece of the medicine tube.

Fig. 6 is a schematic view of the structure of the medicament accommodating tube.

Fig. 7 is a schematic view of a stopper structure of the plunger.

FIG. 8 is a schematic view of the injection power assembly being connected to the firing assembly and the tail.

FIG. 9 is a schematic view of a firing assembly in a fired state.

FIG. 10(a-b) is a sectional view and a schematic axial view of the structure of the drug chamber.

Fig. 11 is a schematic view of the striker pin structure.

Fig. 12 is a schematic view of a tail structure.

Fig. 13(a-d) are schematic views of a number of different styles of tail wings that can be modularly replaced.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, the invention relates to a modular injection bullet with replaceable cartridge, comprising a needle 1, a hood 2, a cartridge connector 3, a cartridge assembly, an injection power assembly, a firing assembly and a tail 11; the medicine tube assembly comprises a medicine accommodating tube 4, a plunger 5 and a plunger stop piece 6, and can accommodate a medicine 14 therein; the injection power assembly comprises a powder chamber 7 and a primer 8, wherein the powder chamber 7 is internally provided with propellant powder 13, and the primer 8 is internally provided with primer powder 12; the firing assembly comprises a firing pin spring 9 and a firing pin 10;

with reference to fig. 2, the needle head 1 is reliably connected with the drug tube connector 3 through the conical surface 1-1 and the conical surface 3-1 on the drug tube connector 3, and the needle head 1 can be replaced by needle heads with different lengths and different inner and outer diameters according to specific target conditions;

with reference to fig. 2 and fig. 3(a-c), the front end of the hood 2 has a hole through which the needle 1 can pass, the hood 2 is in interference connection with the drug tube connector 3 via a shaft hole, and the rear bottom surface of the hood 2 abuts against the end surface of the drug containing tube 4 to realize axial positioning;

further, with reference to fig. 2 and 3, the front end of the hood 2 is provided with a tapered surface 2-1, which can reduce air resistance during the flight of the projectile; aiming at different use scenes and use distances, the blast cap 2 can be quickly replaced into different shapes as shown in fig. 3, so that the shot can obtain better flight stability, and a task can be better executed;

with reference to fig. 4, 5 and 6, the medicine tube connecting piece 3 is reliably connected with the medicine accommodating tube through the rear thread 3-2 and the thread 4-1 on the medicine accommodating tube 4;

with reference to fig. 4, 5 and 6, the cartridge assembly is composed of a medicament containing tube 4, a plunger 5 and a plunger stop piece 6; the plunger 5 and the plunger baffle 6 are positioned at the rear part inside the medicament containing pipe, the front space is used for containing a medicament 14, the plunger 5 is made of rubber, and under the self elastic action of the plunger 5, the plunger is tightly matched with the inner circular surface of the medicament containing pipe through the outer circular surface; the bottom surface of the plunger separation blade is fixedly connected with the rear bottom surface of the plunger 5 through gluing;

further, referring to fig. 4 and 5, the front end of the drug tube connector 3 is tapered, and has a hole inside, so that the drug can flow out forwards;

further, referring to fig. 6, the medicament accommodating tube 4 is made of plastic, a plurality of pre-fabricated grooves 4-4 are formed in the front end face 4-3 of the medicament accommodating tube, when propellant begins to burn, the gas pressure of gunpowder in the medicament chamber 7 gradually rises, the pressure is transmitted to the front end face 4-3 through the plunger retaining sheet 6, the plunger 5 and the medicament, the thickness of the material is smaller at the grooves 4-4, the front end face can be broken from the grooves 4-4 under the action of certain pressure, and therefore the medicament can be injected into a target body through the medicament tube connecting piece 3 and the needle 1 under the action of the pressure; the front of the medicine tube connecting piece 3 is still provided with a cavity after being connected with the medicine accommodating tube 4, and the cavity is used for accommodating the front end surface 4-3 of the broken medicine accommodating tube; according to corresponding calculation, under certain pressure, the front notch can be reliably broken, and other positions of the medicament containing pipe cannot be damaged.

Further, with reference to fig. 4, the plunger 5 has two circles of grooves 5-1 on the outer side thereof, which are used for hermetically launching the gunpowder gas generated by burning the gunpowder, so as to prevent the gunpowder gas from affecting the physicochemical properties of the medicament.

Further, referring to fig. 7, the plunger stop piece 6 is made of metal, and the outer size of the plunger stop piece is slightly smaller than the inner diameter of the medicament accommodating tube, so as to prevent the plunger 5 from being deformed due to the firing of the plunger 5 by high-temperature gunpowder gas and further influence the action of the mechanism; meanwhile, the shape of the gas collecting device is disc-shaped, so that the gas collecting device can collect the gunpowder gas, and the gunpowder gas can stably push the plunger 5 and the medicament to move forwards.

Furthermore, with reference to fig. 4 and 6, since the medicament accommodating tube 4 is respectively connected with the medicament tube connecting part 3 and the medicament chamber 7 through the front and rear external threads 4-1 and 4-2, and the medicament 14, the plunger 5 and the plunger retaining plate 6 are all accommodated in the medicament accommodating tube 4, the plunger 5, the plunger retaining plate 6 and other parts and the medicament 14 form a module, so that modules with different lengths of medicament accommodating tubes and different types of medicaments can be prefabricated in advance, and the module is connected with a threaded cover through the external threads 4-2, and can be stored for a long time. When the injection bullet works in an actual task, the injection bullet can be assembled into the injection bullet which is most suitable for the current situation by replacing the module, the on-site preparation of a medicament is not needed, and the working task efficiency is improved.

With reference to fig. 4 and 6, the cartridge assembly is reliably connected with the internal thread 7-1 of the cartridge chamber 7 of the firing power assembly through the external thread 4-2 at the rear end of the cartridge;

referring to fig. 8, 10(a-b), 11 and 12, the rear part of the explosive chamber 7 is provided with a primer hole 7-2 which is connected with the primer 8 by interference fit; the rear part of the medicine chamber 7 is provided with an annular groove 7-3, the annular groove 7-3 is matched with a circular ring 11-1 shaft hole at the front end of the tail wing 11 to realize connection with the tail wing 11, and the bottom surface of the annular groove 7-3 is contacted with the front end surface of the tail wing 11 to realize axial positioning; the firing pin spring 9 and the firing pin 10 are positioned in an inner hole 11-2 in front of the empennage 11, the firing pin spring 9 is positioned among the explosive chamber 7, the primer 8 and the firing pin 10, when the tail wing 11 is matched with the explosive chamber 7 in place, the firing pin spring 9 is in a pre-compression state, and the firing pin 10 is pressed against the bottom surface of the inner hole 11-2 of the empennage; at the moment, the firing pin is in a cocked state, and the spring force of the firing pin is calculated, so that accidental firing cannot occur when the injection bullet falls or is impacted at low speed, and the daily service safety is ensured.

Further, with reference to fig. 12 and 13, the tail 11 has four plate-like fins, which are used to maintain the stability of the projectile during the flight of the projectile, and the tail 11 is connected to the chamber 7 through a shaft hole, so that it can be easily disassembled; for different use requirements, the tail fin 11 can be quickly replaced by other tail fins with different shapes and numbers as shown in fig. 13 (not limited to the tail fin shown in fig. 13) so as to better perform tasks; wherein, fig. 13(a) is six trapezoidal tails, fig. 13(b) is four trapezoidal tails, fig. 13(c) is six triangular tails, fig. 13(d) is four triangular tails, different tails have different improving effects on the flight stability of the projectile, and the different tails are respectively suitable for different distances and scenes. Through experimental verification, the designed empennage can ensure that the injected bullet keeps stable in the flying process.

Further, referring to fig. 9, 10 and 11, when the bullet hits and pierces the target, the main body of the bullet stops moving, the striker 10 continues to move forward under its own inertia to overcome the resistance of the striker spring 9 and hit the primer 8 in front, the front spherical surface 10-1 of the striker 10 contacts with the bottom cover 8-2 of the primer 8, the bottom cover of the primer 8 deforms under the impact of the striker 10, the front end surface of the bottom cover contacts with the hemispherical boss 7-4 in the chamber 7, during this process, the primer 12 in the primer 8 ignites under the high-speed extrusion impact to generate high-temperature and high-pressure propellant gas, and the propellant 13 in the chamber 7 is ignited through the two ignition holes 7-5 in the chamber 7, the propellant 13 burns to generate high-temperature and high-pressure gas to break the notch in front of the cartridge 4 and push the plunger 6, The plunger 5, medicament 14 completes the injection.

The modularized injection bomb can be launched by a smoothbore gun with a corresponding caliber, and the blast cap 2 and the empennage 11 can keep the stable flight of the injection bomb in the flight process of the injection bomb; when an injection bullet hits a target, under the action of inertia, the needle head 1 can penetrate into the body of the target, after the injection bullet completely penetrates, the hood 2 is blocked after contacting the target, and the injection bullet stops moving; the firing pin 10 moves forwards under the inertia effect to strike the primer 8 against the resistance of the firing pin spring 9, the primer 8 ignites the propellant powder in the propellant chamber 7 after firing, the propellant powder is combusted to generate a large amount of gunpowder gas, the pressure of the gunpowder gas acts on the prefabricated groove in front of the medicament containing pipe 4 through the plunger retaining pieces 6 and the plunger 5 and enables the prefabricated groove to be broken, and then the gunpowder gas pushes the plunger 5 and the plunger retaining pieces 6 to move forwards to inject the medicament into a target body through the medicament pipe connecting piece 3 and the needle head 1.

Claims

1. A modularized injection bullet with a replaceable medicine tube is characterized by comprising a needle head (1), a wind cap (2), a medicine tube connecting piece (3), a medicine tube component, an injection power component, a firing component and a tail wing (11);

the needle head (1) is connected with the medicine tube connecting piece (3); the hood (2) is sleeved outside the needle head (1) and the medicine tube connecting piece (3);

the medicine tube assembly comprises a medicine accommodating tube (4), a plunger (5) and a plunger retaining sheet (6); the medicine tube connecting piece (3) is connected to the front end of the medicine accommodating tube (4); the medicament accommodating tube (4) accommodates a medicament (14); the plunger (5) and the plunger retaining sheet (6) are arranged on the inner rear side of the medicament accommodating tube (4) to seal the medicament (14); the plunger catch (6) is connected to the rear end of the plunger (5); the front end face of the medicament accommodating tube (4) is provided with a notch (4-4);

the injection power assembly comprises a medicine chamber (7), a primer (8) and a propellant powder (13); the powder chamber (7) is connected to the rear end of the medicament accommodating tube (4), the primer (8) is arranged in a primer hole at the rear end of the powder chamber (7), and the propellant powder (13) is arranged in an accommodating cavity at the front end of the powder chamber (7); a fire transfer hole (7-5) is arranged in the explosive chamber (7) and is used for communicating the primer (8) with the propellant powder (13); a boss (7-4) with the impact action of the primer (8) is arranged in the medicine chamber (7); the tail wing (11) is connected to the rear end of the medicine chamber (7);

the firing assembly comprises a firing pin spring (9) and a firing pin 10; the striker spring (9) and the striker (10) are positioned in a hole (11-2) in front of the tail wing (11); the hole (11-2) is communicated with the primer hole; the striker spring (9) is located between the primer (8) and the striker pin (10) in a pre-compressed state, so that the striker pin (10) is in a non-contact state with the primer (8).

2. Modular cartridge replaceable according to claim 1, characterized in that the outer wall of the plunger (5) is provided with a plurality of turns of grooves (5-1) for the containment of the propellant gas.

3. Modular cartridge according to claim 1, characterized in that the cartridge connector (3) is provided with a cavity between it and the medicament containing tube (4) for receiving fragments of the front end of the medicament containing tube (4).

4. Modular cartridge according to claim 1, characterized in that the cartridge connector (3) is removably connected to the cartridge housing (4); the medicament accommodating tube (4) is detachably connected with the medicament chamber (7).

5. The modular cartridge of claim 1 wherein the frontal end of the hood (2) is hemispherical, multi-pyramidal or conical.

6. The replaceable cartridge modular projectile of claim 1 wherein said flight (11) is six trapezoidal flights, four trapezoidal flights, six triangular flights or four triangular flights.

7. Modular cartridge according to claim 1, characterized in that the rear end of the chamber (7) is provided with an annular groove (7-3); the front end of the tail wing (11) is provided with a circular ring (11-1); the circular ring (11-1) is connected with the annular groove (7-3) in a matching way.

8. The replaceable cartridge module of claim 1 wherein the plunger stop (6) is a rearwardly tilted disk-like structure.