Cooling system for machine pistols and machine guns

FIELD: weapon and ammunition.

SUBSTANCE: cooling system consists of two tanks - larger and smaller - with cooling emulsion connected among themselves by the pipeline through the cooling tap. The smaller tank is located inside the fire control handle in the lower part of which the drain plug is located. In the smaller tank the cylinder with holes, the piston and the rubber ball inside the piston is located. The return spring of the piston is located around it in its top part above the small tank. The pipeline the top end of which is laid into the stock cartridge chamber is connected to the lower part of the cylinder. On the pipeline near the trigger the tap with a guidon connected by rod to the lower end of the trigger is installed. In case of use of a folding butt both tanks are connected with a flexible hose.

EFFECT: improving cooling efficiency of gun barrels in submachine guns, auto-machine guns, heavy-calibre machine guns and automatic cannons.

2 cl, 2 dwg

 

The invention relates to weapons technology and can be used for cooling the barrels of automatic and semi-automatic firearms and is intended for machine guns Kalashnikov.

It is known that when firing from automatic weapons heat up and then overheat the barrel due to the heat generated by the combustion of gunpowder inside the barrel, and the friction of the bullet on the inner surface of the barrel. In the result, overheating occurs a failure of the weapon to work, and it can wear out.

To prevent overheating of the barrel on the heavy DShK 12.7 mm heavy machine gun Degtyareva - Shpagina, arr. 1938 (USSR) [Babak F. K. Guns / F. K. Babak. - M.: ACT; SPb.: Polygon, 2006. - S. 266] on the outer surface of the barrel fins made in the form of rings, which increases the surface of the barrel and improves cooling. But this is not enough.

For cooling gun barrels used water cooling. Example - Maxim machine gun (7.62 mm machine gun Maxim, arr. by 1910, the USA/Russia) [Babak F. K. Guns / F. K. Babak. - M.: ACT; SPb.: Polygon, 2006. - P. 149]. In the latest models of this gun was used not only water, but also ice and snow. This greatly increases the weight of the weapon.

As a result of overheating gun barrels can be observed the effect of "haze":

- heat �otoki from the trunk distort the field of view and purpose for a while it becomes indistinguishable;

- due to thermal overheating of the hot barrel with unilateral exposed to wind or precipitation occurs, the slip mid-point hits. This is especially true when using the optical sight.

In a heated barrel, if the long cartridge is in the chamber, can occur spontaneous shot.

To protect the hand from a burn barrel was enclosed in a metal casing provided with openings.

[Shunkov V. N. Encyclopedia of the latest small arms / V. N. Shunkov. Under the General editorship of A. E. Taras. - M.: AST, Mn.: Harvest, 2006. - 560 p.: ill. (Library of military history). P. 401].

Increasing the thickness of the barrel walls and the gain of the receiver can increase the intensity of fire.

Analogs of the invention can be a light machine gun Lewis machine gun "Pecheneg".

The Lewis gun (7.7 mm light machine gun Lewis, arr. by 1915, UK) for intensive cooling of the barrel of the gun pressed aluminum radiator with longitudinal ribs, which is enclosed in a casing and firing the powder gases emerging from the muzzle, produce thrust forward air, which increases cooling [Babak F. K. Guns / F. K. Babak. - M.: ACT; SPb.: Polygon, 2006. - P. 20].

In the machine gun "Pecheneg", which has the GRAU index P, the main feature is the outer Gabrini� and conclusion in a metal barrel jacket [Shunkov V. N. Encyclopedia of the latest small arms / V. N. Shunkov. Under the General editorship of A. E. Taras. - M.: AST, Mn.: Harvest, 2006. - 560 p.: ill. (Library of military history), p. 401]. When fired, the powder gases at high speed coming from the muzzle of the barrel, creating in the front of the casing, the effect of ejection of the pump, holding the cold air along the barrel. Air enters from the atmosphere through the Windows in the enclosure under the carrying handle [Shunkov V. N. Encyclopedia of the latest small arms / V. N. Shunkov. Under the General editorship of A. E. Taras. - M.: AST, Mn.: Harvest, 2006. - 560 p.: ill. (Library of military history), p. 402]. Thus, were able to achieve high practical rate of fire. When doing a long battle, the gun can fire up to 1,000 rounds per hour without compromising combat performance.

According to experts, the real solution to the problem of cooling of the barrels is to replace the shafts. Example, SACO, model M E (USA). However, in offensive operations it is not always possible. A disadvantage of the cooling of all existing models is that the cooling is the outer surface of the barrel, while the most intense heating of the metal inside the barrel.

The prototype of the present invention is a cooling system in the submachine gun "Range" M 4 Italian company "SITES" [Grytsenko, V. I., �Fedoseev S. L. The infantry weapon. - M.: Arsenal Press, 1997. - P. 137], the shutter which in its reciprocating movements forcibly directs the flow of air through the bore, along the wellbore, thereby preventing overheating of the barrel, even during intensive firing, extends continuously for 1,000 shots. Due to this, the probability of ignition of a cartridge in the chamber is sharply reduced. Outside the barrel is protected by a perforated steel casing. The rifling of the barrel are "sinusoidal" shape, this reduces the friction force of the bullet inside the barrel.

And yet in a long intense battle, all these measures cooling trunks insufficient or inconvenient because of the need for replacement of superheated trunk of another.

The technical result when using the invention is the ability to effectively cool the gun barrels in rifles, machine guns, heavy machine guns, automatic cannons.

The technical result is achieved in that there are two tanks large and small capacity with cooling emulsion, interconnected by tubing through the valve start cooling, and the small capacity tank is located inside the handle fire control, in the lower part of which has a drain tube inside the tank and small capacity is placed in the cylinder with holes, piston and re�inovem ball inside of the piston, the return spring of the piston is located in its upper part above a small capacitance, the lower part of the cylinder is connected to the pipeline, the upper end of which is directed into the chamber of the barrel, on the pipeline near the trigger the valve is installed with the box, which is connected by a rod with the lower end of the trigger. In the case of folded butt both reservoirs are connected by a flexible hose.

Fig.1 shows a General view: the reservoir 1 large container with lid 2. The conduit 3 connects the tank 1 high capacity tank with 4 small capacity located in the handle of the fire control 5. Handle 5 must be transparent to monitor the coolant level. Shows tap start cooling 6. The cylinder 7 with eight holes 8 and the piston 9 is located inside a small tank 4. Inside the cylinder 7 is a rubber ball 10. Shown return spring 11 of the piston 9. The pipeline 12 (Fig.1, not shown) connected at one end to the bottom of the cylinder 7, and the other end is directed into the chamber. On the pipe 12 near the trigger 13 is mounted crane with box 14. A rod 15 connecting the box to the crane with the bottom part 14 of the trigger 13. In the lower part of the grip fire control 5 a drain tube 16.

Fig.2 shows the handle of a fire-control 5 in the section. Shown: reservoir little� capacity 4, tap start cooling 6, cylinder 7, hole 8, the piston 9, the rubber ball 10, the return spring 11, the conduit 12, a trigger 13, a crane with box 14, rod 15, the drain tube 16.

Instead of a rubber ball 10 can do the bottom of the hollow piston 9. Take up arms. The large capacity tank 1 open the cover 2 and fill the reservoir of the cooling emulsion, which should meet the following requirements:

- must not freeze;

- must not cause corrosion of weapons;

- should not cause irritation in contact with skin and eyes hand;

- should reduce the friction during the movement of the bullet inside the barrel, which in turn will increase the speed of the bullet and increase its injurious action.

When shooting in the mountains, when the target is considerably above the horizon, it is necessary in large capacity 1 to create the piston 9 excess pressure.

Close the cover 2 of the tank 1. Open the valve start cooling 6. Fluid flows from a large reservoir 1 in a small tank 4, located in the lowest part of the weapon handle fire control 5. Filling of the cooling emulsion not only of the tank 4, and the cylinder 7 through the holes 8. The cooling system is ready for operation.

Inside the piston 9 is a rubber ball 10, inside which the air pressure is equal to 0.3 to 0.4 at�. Upon impact, the bolt and bolt carrier in the upper part of the piston 9 moves the piston 9 downwards, and to avoid hydraulic shock, compression rubber ball 10, and after a stop at the bottom of the piston 9, the ball 10 will increase in size and time of submission of the cooling emulsion of cylinder 7 through conduit 12 into the bore increases.

Thus, the rubber ball 10 not only smoothes the pressure of the cooling emulsion, but also increases the time of its submission. When you press the trigger 13 rod 15 moves backward, the other horses which is connected to the box of the crane 14 and opens the valve. When pressed further on the trigger 13 is shot. The bolt Assembly with the bolt of the machine is moved back and in its rearmost position strikes the bevel of the piston 9, which moves downward and compresses the emulsion.

Cooling emulsion in the cylinder 7, through conduit 12 through the valve 14 is injected through the chamber in the barrel is heated to the boiling point, turns into vapor, which is expelled through the bore. Thus, there is a cooling of the heated inner surface of the barrel.

The bolt carrier under the force of its spring, returns to its original position. The piston 9 under the influence of its spring 11 rises. Cylinder 7 filling�tsya through hole 8 with coolant. The machine is ready for the next shot.

When you release the trigger 13 he returns to the original position and the rod 15 rotates the box and closes the tap 14, which eliminates leakage of the cooling emulsion of weapons in the travelling position.

This cooling channel trunks allows you to fire continuously increases several times the density of fire and the use of the emulsion increases bullet speed, range, provides an effective lethality and accuracy.

1. Cooling gun barrels for machine guns having a barrel and the bolt, characterized in that there are two tanks large and small capacity with cooling emulsion, interconnected by tubing through the valve start cooling, and the small capacity tank is located inside the handle fire control, in the lower part of which has a drain plug, and inside the tank of small capacity is placed in the cylinder with holes, a piston and a rubber ball inside of the piston, the return spring of the piston is located in its upper part above a small capacitance, the lower part of the cylinder is connected to the pipeline, the upper end of which is directed into the chamber of the barrel, on the pipeline near the trigger the valve is installed with the box, which is connected by a rod with the lower end of the trigger �of ryuchok.

2. Cooling gun barrels for machine guns according to claim 1, characterized in that in the case of folded butt both reservoirs are connected by a flexible hose.



 

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