RU2689899C1 - Mechanism for arming of movable parts of automatic gun - Google Patents

Abstract

FIELD: military equipment.SUBSTANCE: invention relates to military equipment, in particular to mechanisms for remote cocking of automatic guns. Mechanism for arming of movable parts of automatic gun consists of electric motor, front and rear reduction gears, which are connected by cardan shaft, running nut, bushing and running shaft. Front reduction gear is arranged on gun guard in area of its rotation axis. Output shaft of the rear reduction gear transmits rotation to the running shaft through the bushing, the sliding nut is connected to the gate. When the reduction gear is removed, the bushing is fixed in the back of the gun with retainers. At installation of a reducer or manual cocking the retainers release the bushing.EFFECT: reducing unbalance moment, provision of manual cocking of movable parts, reduction of automatic gun dimensions.1 cl, 4 dwg

Description

The invention relates to military technology and can be used in machine guns and automatic guns for remote cocking when reloading weapons.

A mechanism is known for manual reloading of a machine gun mounted in an infantry fighting vehicle (Infantry fighting vehicle BMP-2. Technical description and operating instructions, part 1, M., Military Publishing House, 1987), which consists of a handle connected through a thrust and fork to the handle reloading machine gun.

The lack of a mechanism is the impossibility of remote reloading of a machine gun when it is placed in an uninhabited combat module or hard-to-reach places of combat compartments.

Known 30-mm automatic gun 2A42, mounted in the tower of an infantry fighting vehicle BMP-2. The gun has a pyro-recharging mechanism for remote movement of moving parts and consists of a cartridge for accommodating the squibs. A contactor is used to lock the cartridge chambers and supply current to the electrocapsule nozzle bushings. When the trigger is triggered, the powder gases enter the gas cylinder of the barrel assembly, act on the slide frame piston and move it to the rear position.

The disadvantage of the mechanism is a limited number of reloading cycles of the gun, depending on the number of squibs in the cartridge.

There is a method of automatic reloading of small arms previously accumulated before firing the energy of the electric accumulator and the return spring (Patent RU No. 2585679 dated 10.06.2016, IPC 8F 41A 7/02).

Small arms in this method includes a bolt carrier with a return spring and a bolt and a reloading mechanism with an electric accumulator and a solenoid. Automatic reloading is performed in sequence: after the shot is fired, the firing mechanism triggers a voltage from the electric accumulator of the reloading mechanism to the solenoid, which converts the slide frame with the gate from the closed gate position to the open gate position, then the return spring of the slide frame converts the gate frame from the open position shutter to closed shutter position.

The disadvantage of the reloading mechanism is the large weight of the electroaccumulator and solenoid.

A mechanism for remote weapon cocking is known (Patent RU No. 2422746 dated 06.27.2011, IPC F 41A 7/06) taken as a prototype. The mechanism includes a housing, an electric motor, a screw, a running nut with a drive element. The drive element is hinged on the spindle nut and connects the spindle nut and the arming rod. The mechanism is equipped with a nut position sensor.

The lack of a mechanism - the preponderance of the breech. The disadvantage is manifested when installing weapons with the possibility of pointing in a vertical plane.

The objective of the proposed invention is to bring the center of mass of the weapon to the axles of the combat module axles in order to reduce the unbalance moment of the automatic gun relative to the axis of its rotation, provide manual cocking of moving parts and ensure firing by automatic gun without activating the cocking mechanism of moving parts from de-energized installations, as well as reducing the dimensions of the automatic the guns.

The problem is solved by the cocking mechanism of the moving parts of the automatic gun, consisting of a gearbox housing, an electric motor, a lead screw and a running nut that interacts with the shutter of the automatic gun.

New is that the gearbox consists of two parts interconnected by a cardan shaft, one part of the gearbox is installed on the cannon fence, near the axis of its rotation, the other part of the gearbox is fixed on the gun butt plate in such a way that its output shaft interacts with the lead screw, installed by the sleeve, while the lead screw is located in the barrel of the automatic gun parallel to the axis of the barrel bore, the sleeve is provided with slots that interact with the lock, mounted in the back plate.

The proposed technical solution is illustrated with graphic materials, where in FIG. 1 shows a general view of the cocking mechanism mounted on an automatic gun; FIG. 2 shows the construction of the cocking mechanism in section; FIG. 3 — the part of the mechanism directly interacting with the shutter; FIG. 4 - rear view of the butt plate of an automatic gun.

The front, heavier part of the gearbox 1 is mounted on the fence 2 in the immediate vicinity of the axis of rotation 3 of the automatic gun. One of the gears of the front part of the gearbox is connected to the cardan shaft 4, fastened to the gear wheel of the rear part of the gearbox 5, mounted on the back of the gun 6. The output shaft 7 of the rear part of the gearbox 5 is fastened with the sleeve 8 with the lead screw 9, while the sleeve 8 is fixed. The lead screw 9 is installed in the receiver 14 of the gun.

The cocking mechanism of the moving parts of the automatic gun works as follows. When installing the rear part of the gearbox 5 on the butt plate 6 of the gun, the output shaft 7 enters the square hole of the sleeve 8 and acts on the latch 10, which releases the sleeve 8 with the lead screw 9 and the output shaft 7.

When you turn on the motor 11, the rotation from the front of the gearbox 1 through the drive shaft 4 is transmitted to the back of the gearbox 5 and the output shaft 7 starts to rotate. When this turns the spindle 9. Running nut 12 begins to move and, acting on the bolt 13, cocks it.

In the rearmost position, the shutter 13 becomes on the sear, the reverse of the electric motor 11 is turned on and the running nut 12 moves to the forward position. The gun is ready to fire.

With the withdrawal of the cocking mechanism of moving parts, shooting is carried out at the fixed position of the sleeve 8 by the latch 10.

For manual cocking of moving parts, a knob with a square tip is used, which is inserted into the square opening of the sleeve 8.

Thus, the proposed technical solution made it possible to reduce the moment of imbalance of the gun relative to the axis of the axles of the combat module, provide manual cocking of the moving parts of the automatic gun, ensure shooting with the de-energized fire control system and ensure placement of the cocking mechanism in the gun dimensions.

Claims (2)

1. The cocking mechanism of the moving parts of an automatic gun, consisting of a gearbox housing, an electric motor, a lead screw and a running nut that interacts with the shutter of an automatic gun, characterized in that the gearbox consists of two parts interconnected by a drive shaft, one part of the gearbox is mounted on the fence the gun near the axis of its rotation, the other part of the gearbox is fixed on the gun butt plate in such a way that its output shaft interacts with the lead screw installed by means of the sleeve, while a screw located in the receiver automatic gun barrel bore parallel to the axis. 2. The cocking mechanism of the movable parts of the automatic gun according to claim 1, characterized in that the sleeve is provided with slots interacting with a retainer fixed in the back plate.

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