RU131143U1 - ARMS AUTOMATIC ENGINE WITH BALANCED AUTOMATION WITH ONE DRIVE PISTON - Google Patents

Abstract

A small arms automatics engine with balanced automation, including a bolt frame with a rod and piston, a bolt, a balancer with a rail, a bolt return spring with a bolt, a balancer return spring, gear sprockets, a gas chamber closed on one side, characterized in that that the movement of the balancing unit occurs under the influence of powder gases discharged into the gas chamber on one piston connected to the bolt frame.

Description

- Field of technology:

The technical solution relates to automatic small arms and is aimed at improving the stability of weapons when firing bursts.

- Prior art:

A machine with a balanced movable automation system is known (RF patent No. 2152580), comprising a receiver, a carriage support, a shutter frame and a balancer rail placed in the receiver, kinematically connected via an asterisk-gear mounted in the carriage with the possibility of oppositely directed movement.

A well-known machine with a balanced movable automation system AEK-971 (see the magazine "MILITARY PARADE" N 3 (27) 1998, may - June, p. 42, Military parade Ltd; Russia, in English), containing a barrel, a barrel box and device for balancing a mobile automation system.

A well-known machine with a balanced movable automation system (see US patent 3491650 A, 1970), comprising a barrel with a receiver, a shutter frame with a gas piston, a shutter and a return mechanism, a balance rail with a gas piston and a return mechanism, a carriage with an asterisk mounted on a support rigidly mounted on the barrel. The bolt frame and the balance bar, kinematically connected by an asterisk, moving in opposite directions and simultaneously striking the carriage in extreme positions, absorb the impact energy of the moving parts.

- Disclosure of utility model

Figure 1 shows the traditional scheme of operation of automation, characteristic of all the above examples of small arms using the effect of balanced automation. The automation engine of such a circuit has two drive pistons, rigidly connected with the bolt frame 1 and the balancer 2, which stipulate the presence of a gas chamber 6. open on both sides. To synchronize the movement of the bolt frame and the balancer, there is a kinematic connection through the gears-sprockets 5.

Provided that the masses of the bolt frame with the bolt and the balancer with the corresponding springs are equal in this scheme, the impact of the moving parts in the extreme positions and the reaction forces from the compressible return springs of the bolt frame with the bolt 3 and the balancer 4 can be completely eliminated. balancing fully copies the nature of the return of non-automatic small arms.

The results of studies on the formation of the recoil impulse of a hand-held automatic weapon with different automatic operation schemes, performed for the initial data of the AK74 assault rifle without taking into account the muzzle brake (see [1]), allowed conclusions to be drawn regarding the nature of the transfer of recoil impulse to the arrow most rational for increasing the stability of the weapon . Figure 2 presents the pulse diagrams characteristic of classical systems with the removal of powder gases from the bore and systems with balanced automation with two drive pistons.

In systems with the removal of powder gases (figure 2), the recoil momentum gradually increases before the movement of the shutter frame, moving under the influence of the pressure of the powder gases entering the gas chamber. In this case, the pressure force of the powder gases on the front wall of the gas chamber has a stabilizing effect on the weapon when firing. Its momentum is numerically equal to the momentum of the moving parts. By the end of the rollback, the momentum of the shot is transmitted to the arrow completely. On the coast, the recoil momentum increases due to the action of the expanding return spring, the force impulse of which is realized in the movement of the retractable parts, and due to the impact in the extreme forward position, the recoil momentum becomes equal to the momentum of the shot.

In systems with balanced automation with two drive pistons, there is no impulse from the pressure force of the powder gases to the front wall of the gas chamber, which ensures the transfer of the full shot impulse to the arrow by the end of the aftereffect, after which, with equal masses of the shutter frame with the shutter and the balancer, the recoil impulse to the arrow not getting through. Some advantage of these systems in comparison with the weapons of the classical configuration with the removal of powder gases is determined by the absence of a recoil momentum transfer for the coasting cycle, which does not lead to a significant improvement in firing characteristics, and they have not received widespread use of a system with balanced automation with two drive pistons.

The considered features of changing the recoil of weapons in the rollback cycle determine the appropriate construction of a pulse diagram to improve its stability: the change in the recoil momentum in the initial section (from the beginning to the end of the shot) should be similar to systems with the removal of powder gases with the subsequent exception of the transmission of the recoil pulse in the remaining sections work automation. The required nature of the transmission of the recoil pulse allows you to get a scheme with balanced automation with one drive piston (figure 3).

The composition of this scheme is almost identical to the traditional scheme with balanced automation, except for the absence of a balancer piston, and, as a result, the presence of a gas chamber closed on one side. In this scheme, until the end of the aftereffect, the formation of a recoil impulse is identical to a weapon of a classical configuration with the removal of powder gases. Due to the application of the effect of balanced automation for the remaining rollback and rollback, the transmission of the recoil pulse is excluded (Fig. 4).

Thus, the use of a scheme with balanced automation with one drive piston can significantly reduce the recoil momentum by the end of the aftereffect compared to the traditional scheme with balanced automation with two drive pistons, which, in turn, improves the stability of the weapon when firing.

- Brief description of the drawings:

Figure 1 - shows a schematic diagram of a weapon with balanced automation with two drive pistons.

Figure 2 - shows the pulse diagrams for weapons of classic layout with the removal of powder gases from the bore and systems with balanced automation with two drive pistons.

Figure 3 - shows a schematic diagram of a weapon with balanced automation with one drive piston.

Figure 4 - shows a pulse diagram for weapons with balanced automation with one drive piston.

Bibliographic list:

1. Galagan L.A., Chirkov D.V. The nature of the transfer of recoil momentum to the arrow in systems with a fixed receiver. Bulletin of IzhSTU №2 2012

Claims (1)

A small arms automatics engine with balanced automation, including a bolt frame with a rod and piston, a bolt, a balancer with a rail, a bolt return spring with a bolt, a balancer return spring, gear sprockets, a gas chamber closed on one side, characterized in that that the movement of the balancing unit occurs under the influence of powder gases discharged into the gas chamber on one piston connected to the bolt frame.

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