CN110360873B - Non-pressure shell-drawing gun chamber - Google Patents

Abstract

The invention relates to a novel gun chamber. The invention relates to a pressure-free shell-drawing chamber, which is a part for connecting a gun barrel and a receiver in a gun, all chambers are simple pipes at present, the pressure-free shell-drawing chamber is composed of a plurality of parts, the chamber is evenly divided into two halves, one half of the chamber and a shell are integrally processed and fixed, two sides of the shell are provided with threads and are respectively connected with the gun barrel and the receiver, the other half of the chamber can move in the direction vertical to the chamber, and a sliding block is arranged between the movable half of the chamber and a cover plate at the bottom of the shell. When the shell is pulled out by the grab shell hook, the sliding block has no supporting force on the movable half bore, the whole bore has no pressure on the cartridge shell, the grab shell hook smoothly pulls out the cartridge shell, and the sliding block props against the movable half bore at other times, so that the bore is the same as that of a common bore. Firearms using pressureless caseshooters can fire aluminum alloy straight cartridge cases and plastic straight cartridge cases. The invention has important significance for firearm development.

Description

Non-pressure shell-drawing gun chamber

One, the technical field

The invention relates to a novel gun chamber. The chamber is the part of the firearm that connects the barrel and the receiver, and is where the cartridge to be fired is received. Most bore and barrel integrated processing also have bore and barrel to separate the processing, and interference fit is in the same place again, and the purpose is practiced thrift the barrel material. At present, all the bores are simple pipes, the inner walls of the bores are smooth and have no rifling, the shapes of the bores are matched with those of a cartridge case, the inner diameter of each bore is slightly larger than the outer diameter of the cartridge case, and the cartridge case can freely rotate in the bores. The pressure-free shell-drawing gun chamber designed by the inventor is composed of a plurality of parts, two sides of the pressure-free shell-drawing gun chamber are circular tubes, threads are arranged on the circular tubes and are respectively connected with a gun barrel and a receiver, a gun chamber is arranged in the middle of the pressure-free shell-drawing gun chamber, the gun chamber is averagely divided into two halves, one half of the gun chamber and a shell are integrally processed and fixed, the other half of the gun chamber can move in the shell along the direction perpendicular to the gun chamber, a sliding block is arranged between the movable half of the gun chamber and a cover plate at the bottom of the shell, the sliding block can enable the gun chamber to be in an unlocking state and a locking state, when a bullet is about to leave a gun muzzle, a shell-grabbing hook takes out the shell, the gun chamber is in an unlocking state, the sliding block does not have supporting force on the gun chamber, the gun chamber has no pressure on the shell, and the shell-grabbing hook smoothly pulls out the shell to throw the shell. And at other times, the gun chamber is in a locked state, the slide block is propped against the movable half gun chamber, and the gun chamber is the same as the common gun chamber. Firearms using pressureless caseless breech extraction can fire aluminum alloy straight cartridge cases and plastic straight cartridge cases.

Second, technical background

After the appearance of the metal set-load bullet, copper becomes a better choice for the raw material of the metal shell, and the bullets used in most of the countries until now are copper shell bullets. The use of copper as the cartridge case is also true, and although the copper cartridge case has many advantages, it also has obvious disadvantages. The use of copper as the cartridge case not only has expensive raw materials, but also has complex processing technology and high production cost, so the cost of the copper cartridge case accounts for more than half of the value of the bullet. With the sound of the gun, one bullet is shot out, and one exquisite bullet shell becomes waste, is discarded on the battlefield, and this is a very big waste. Due to the fact that the copper density is large, the weight of a copper bullet case is large, the weight of the copper bullet case accounts for more than half of the weight of the whole bullet, so that soldiers cannot carry too many bullets, and often want to save the ammunition before fighting. For more than a hundred years, military experts in the first generation continuously search substitutes for copper shell cases, and the copper-clad steel shell bullets are produced in Germany and the Soviet Union as early as the second world war. Many countries now give up the development of metal cartridge cases and have begun to develop plastic cartridge cases and caseless cases with the aim of reducing the cost and weight of the cases, but with slow progress. I have the idea of manufacturing the cartridge case by using the aluminum alloy in the past university, and the aluminum alloy straight cartridge case bullet is designed after the work is participated in, and is really high in quality and low in price compared with a copper cartridge case bullet. Because the aluminum alloy has rich resources, low price and easy processing, especially the manufacturing process of the straight-tube cartridge case is much simpler than that of the cone-tube cartridge case, the cost of the aluminum alloy straight-tube cartridge case is extremely low and even less than one tenth of that of the copper cartridge case, and the cost of the common bullet is reduced by half. Aluminum alloy cartridge cases are more corrosion resistant than copper cartridge cases, and although aluminum is chemically active, aluminum can generate a dense oxide film on the surface to prevent the interior from being oxidized continuously. The aluminum alloy shell has a light weight, the density of the aluminum alloy is less than one third of that of copper, the weight of the aluminum alloy shell is about one third of that of a copper shell with the same size, and the weight of the copper shell accounts for more than half of the total weight of the bullet, so that the weight of the aluminum alloy shell bullet is reduced by about one third compared with that of the bullet with the copper shell with the same size, and fifty percent of bullets can be carried under the condition that the weight of a warrior is unchanged without considering the influence of other factors. The straight magazine is used for the aluminum alloy straight-barrel cartridge case bullet, the straight magazine is processed, raw materials are saved, the processing technology is simple, the cost of the magazine is greatly reduced, the occupied space of the straight magazine is small, the straight magazine is convenient to carry and transport, and bullet supply is smooth. Why military experts are invisible to aluminum alloy, so far none of the countries use aluminum alloy as the bullet's bullet case? The reason is that the propellant powder is burnt to generate high-temperature and high-pressure gas to expand the cartridge case and tightly press the gun bore, great tension is needed for taking out the cartridge case, the copper cartridge case cannot be subjected to any treatment sometimes, the copper cartridge case is made into a conical cylinder which is difficult to process, the mechanical strength of aluminum alloy is poorer than that of copper, and the aluminum alloy cartridge case can be pulled apart or a case taking hook can be pulled to damage the bottom edge of the cartridge case to cause case clamping. I think that the aluminum alloy cartridge case is difficult to pull out and easy to clamp when being fired by a gun, why does not invent a firearm with easy shell pulling out? Therefore, the pressure-free shell-drawing gun chamber is designed, and the problem is perfectly solved. The gun using the pressureless shell-drawing gun chamber can not only shoot aluminum alloy straight-tube cartridge shell bullets, and the shell drawing is smooth and never blocked, but also can reduce the air supply of a muzzle air guide hole, reduce the vibration of the gun and improve the shooting precision.

Third, summary of the invention

I design's shell bore is taken out to no pressure comprises a plurality of parts, contains the shell of half bore, mobilizable half bore, slider, apron, piston, cylinder, air duct, spring respectively. Processing a bore by one side of a cuboid alloy steel, processing a rectangular groove at a position right facing a cartridge case from the bottom until only half of the bore is left, processing half of the bore by using an alloy steel, processing a slide block into the rectangular groove by processing two trapezoidal grooves on the plane, putting the rectangular groove from the bottom of the case, combining the rectangular groove with the half of the bore of the case to form a complete bore, moving the complete bore in the case along a direction vertical to the bore, processing a slide block into the rectangular groove, arranging two protrusions with trapezoidal cross sections on one surface of the slide block, contacting the movable bore, and a bottom plate contact surface as a plane, punching a hole in the middle of the surface of the slide block pointing to a muzzle, processing threads, moving the slide block in the case along a direction parallel to the bore, processing a cover plate to cover the rectangular groove, sealing, and adopting a welding mode, wherein a hole is formed at the position right opposite to the slide block below the muzzle threads of the case, the screw thread is processed in the hole for connecting the cylinder, the middle position is punched, the piston push rod penetrates through the connecting slide block from this, and the screw thread is processed at one end of the cylinder and can be fixed on the shell. The piston and the connecting rod are integrally processed, the tail end of the connecting rod is provided with threads, the connecting rod penetrates through a hole in the shell and is fixed on the sliding block, the spring is clamped between the piston and the shell, the cylinder is fixed on the shell, the piston is opposite to an air valve of the cylinder, the bottom of the cylinder is a concave surface, a gap is formed between the piston and the bottom of the cylinder, and the air valve is connected with a muzzle air guide hole through an air guide pipe. Lubricating oil is added among all parts. When the bullet reaches the air guide hole of the muzzle during shooting, air enters the air cylinder through the air guide tube to push the piston to move backwards, the slide block moves backwards together, the upper surface of the slide block protrudes into the groove in the back surface of the movable half bore, the movable half bore loses the supporting force of the slide block, the movable half bore moves downwards slightly, the whole bore has no pressure on the bullet shell, the shell grabbing hook smoothly takes out the shell, the protruding part of the slide block slides out of the groove in the back surface of the bore under the action of the spring at other time to prop against the movable half bore, so that the movable half bore cannot move, the bore is in a locked state, and the function of the gun is the same as that of a common bore.

Description of the drawings

FIG. 1 is a front view of a pressureless caseless breech

FIG. 2 is a cross-sectional view of a pressureless caseless breech

In FIG. 1, the screw threads of the both sides of the casing and the joint of the barrel and the casing, the screw threads of the joint of the end of the piston rod and the slide block, and the screw threads of the joint of the cylinder and the casing are not shown

Fifth, detailed description of the invention

The description has fully described the principle and function of the non-pressure shell-drawing gun chamber and the processing scheme, and it can be seen that the processing has no difficulty, and the concrete shapes, sizes, required materials and spring force of all the parts are designed by firearms experts.

Claims (5)

1. A pressure-free casing-drawing gun chamber is composed of a casing with a half chamber, a movable half chamber, a slide block, a cover plate, a piston, a cylinder, an air duct and a spring, and features that the gun without pressure casing-drawing gun chamber can launch the bullet of straight Al-alloy cylinder and the bullet of straight plastic cylinder, the movable half chamber is put in the rectangular slot of casing, the slide block is put in the slide block, the push rod of piston is connected to the slide block via spring, the air duct is connected to cylinder and fixed to casing, the cover plate is arranged at bottom of casing to make the movable half chamber and slide block in a closed space, the slide block can slide between the movable half chamber and cover plate, so assembling the pressure-free casing-drawing gun chamber, the two ends of casing are made of circular tube with screw threads for connecting gun tube and receiver, the air duct is connected to air duct on gun barrel, and when the gun is opened, when the bullet reaches the air guide hole of the muzzle, air enters the cylinder through the air guide tube to push the piston and the slide block to move backwards, the upper part of the slide block protrudes into the groove on the back of the movable half bore, the slide block has no supporting force on the bore, the bore has no pressure on the cartridge case, the case grabbing hook smoothly takes out the case, the upper part of the slide block protrudes out of the groove on the back of the bore to prop against the movable half bore at other times under the action of the spring, so that the cartridge case cannot move, and the function of the cartridge case is the same as that of the common bore.

2. A non-pressure shell drawing chamber as claimed in claim 1, characterized in that the housing and the fixed half chamber are made in one piece, the housing has round tubes on both sides, the tubes are threaded and connected with the barrel and the receiver, respectively, there are holes below the threads connected with the barrel, the threads are made in the holes for fixing the cylinder, the holes are perforated, the piston rod is connected with the slide block through the holes, the half chamber in the middle part of the housing is opposite to the rectangular groove for holding the half movable chamber and the slide block, and the bottom of the rectangular groove is sealed by a cover plate.

3. The pressureless casing extraction chamber as in claim 1, wherein the movable half chamber is combined with the half chamber of the casing to form a complete chamber, and can move in a rectangular slot of the casing along a direction perpendicular to the chamber, the back of the movable half chamber is a plane, and two trapezoidal grooves are formed on the plane.

4. A pressure-free casing-drawing chamber as in claim 1, wherein the slide has two projections of trapezoidal cross-section between the movable chamber half and the bottom cover of the casing, on the plane of contact with the movable chamber, and on the plane of contact with the bottom cover, and the slide has a hole in the middle of the plane pointing towards the muzzle, in which there is a thread for connection with the piston rod, the slide being able to move in the casing in a direction parallel to the chamber.

5. The pressureless casing extraction chamber as defined in claim 1, wherein the cylinder has one end fixed to the casing and the other end having the air valve, the air valve is connected to the muzzle air-guide hole by an air-guide tube, the cylinder has a piston therein, a spring is provided between the piston and the casing, and the piston rod is connected to the slider.

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