RU224510U1 - BALLISTIC SYSTEM SHUTTER - Google Patents

Abstract

The utility model relates to weapons and can be used in bolts with caseless ammunition. The shutter of the ballistic installation contains a housing with a striking mechanism, in which a firing pin, a mainspring, a firing pin bushing, a sear, a bolt lock, a sear spring, a handle, a sear axis, crimp protrusions and a compensation bushing are placed. Unlike the bolt of a military weapon, the bolt of a ballistic launcher is motionless. The bolt is designed to load ammunition, lock the barrel when firing, and fire a shot. In a caseless firing scheme, the bolt acts as a cartridge case, in the internal volume of which the powder charge burns out, which makes it possible to ensure the intra-ballistic characteristics specified for the ammunition and their synchronization with the intra-ballistic characteristics of the combat weapon. The free internal volume is a cavity limited on the outside by the diameter of the inner surface of the bolt body, and on the inside by the outer diameter of the firing pin bushing, and ends with a compensation bushing in the end part of the bolt body. The technical result is to ensure stable intra-ballistic characteristics of caseless ammunition when fired from a ballistic installation in order to obtain the necessary parameters of military weapons and conduct mass production. 3 ill.

Description

The utility model relates to a weapon and can be used in a weapon with a caseless ammunition design and the characteristics of a military weapon.

A small arms bolt is known, described in patent RU 2677165, dated December 18, 2017, IPC: F41A 17/00, containing a locking element movably mounted on the bolt body with the ability to rotate around its longitudinal axis and equipped with combat ledges. A bolt for small arms, containing a housing in which a striking mechanism is placed with the possibility of forced cocking - relaxation of the mainspring using a cocking mechanism driven by a control element, which is a slider configured to slide it along the rear side of the housing between the lower uncocked position and upper cocked position, characterized in that the cocked mechanism is a double-arm lever on which the wheel is located, which interacts with the inner surface of the slide when rotating; the second arm is loaded with a mainspring.

A known bolt is described in patent RU 2164333 dated March 30, 1999, IPC: F41A 3/36, containing an element movably mounted on the bolt body with the ability to rotate around its longitudinal axis and equipped with lugs, characterized in that there is a pair of two guides with sockets for sealing devices located in the muzzle of the guides, which are connected parallel to the barrel in the lugs, the bolt frame forming a movable connection with the guides, containing two hollow rods, open from the muzzle and breech and connected at the breech by a jumper having a cutout for the bottom sleeves, sockets for the ejector and firing pin, a comb for sending the cartridge into the chamber and a groove for the passage of the reflector, each of the pair of stems of the bolt frame has in the muzzle a channel for the return spring and its supporting element, as well as a socket for the reloading handle, and in its breech - a socket of a locking element installed in the socket with the possibility of longitudinal movement relative to the shutter frame. The locking element is made with lugs that can be placed on bushings that compensate for the movements of the locking element.

All the described bolts are not suitable for firing caseless rounds, since they do not have a free internal cavity for the powder charge to burn out, which plays the role of an ammunition casing and makes it possible to ensure the intra-ballistic characteristics of a military weapon specified for the ammunition.

The technical task is to ensure stable intra-ballistic characteristics of caseless ammunition when fired from a ballistic installation in order to obtain the necessary parameters of military weapons and conduct mass production.

The technical problem is solved by the fact that in a bolt containing a body with a striking mechanism, in which a firing pin, a mainspring, a firing pin bushing, a sear, a bolt closure, a sear spring, a handle, a sear axis, truss protrusions, and a compensation sleeve are placed, there is a free internal volume, which is a cavity limited on the outside by the diameter of the inner surface of the bolt body, and on the inside by the outer diameter of the firing pin bushing and ends with a compensation bushing in the end part of the bolt body.

In military weapons, the bolt moves in the horizontal direction and leads to a change in the free volume, where the powder charge burns out and does not allow intra-ballistic characteristics to be ensured with high accuracy. The main task of the ballistic installation is to participate in the production of ammunition and their elements, with the required high accuracy of characteristics, while the spread of intra-ballistic characteristics should be 2.5 times lower than those specified for subsequent use in military weapons. The result can be achieved by the correct choice of the size of the free cavity in the fixed bolt of the ballistic installation, which can be adjusted by the thickness of the sleeve located at the end of the bolt body.

Unlike the bolt of a military weapon, the bolt of a ballistic launcher is stationary during the firing process. The bolt is designed to load ammunition, lock the barrel when fired, and fire a shot. In a caseless firing scheme, the bolt acts as a cartridge case, in the internal volume of which the powder charge burns out, which makes it possible to ensure the intra-ballistic characteristics specified for the ammunition and their synchronization with the intra-ballistic characteristics of the combat weapon. The free internal volume of the bolt is a cavity limited on the outside by the diameter of the inner surface of the bolt body, and on the inside by the outer diameter of the firing pin bushing and ends with a compensation bushing in the end part of the bolt body.

The installation is loaded manually from the breech. The bolt is connected to the barrel using three lugs that absorb the pressure of the powder gases when fired. On the breech of the barrel there are three lugs for locking the barrel when firing a shot.

The connection between the bolt and the barrel must be made with the firing pin cocked and the safety in the "PR" position.

Firing from the installation is carried out in single shots remotely from behind cover using a cable attached to the sear.

The utility model is illustrated in more detail by the drawing, which shows the following:

Fig. 1 - Ballistic installation;

Fig. 2 - shutter;

Fig. 3 - making croutons.

The ballistic installation (Fig. 1) for measuring the characteristics of a shot consists of a stand 1, a ballistic barrel 2, nuts 3, a bolt 4, a crushing device or crushing nut 5 or 6, a gasket 7, a cable 8 and a bushing 9.

The bolt (Fig. 2) consists of a bolt body 10, a firing pin 11, a firing spring 12, a firing pin bushing 13, a sear 14, a bolt closure 15, a sear spring 16, a handle 17, a sear axis 18, and crimp protrusions 19 (Fig. 3) The installation is loaded manually from the breech. The connection of the bolt 4 with the barrel 2 is made using three cracked protrusions 19, which perceive the pressure of the powder gases when fired. On the breech of the barrel there are three lugs for locking the barrel when firing a shot.

The bolt 4 is connected to the barrel 2 (Fig. 1) with the hammer 11 cocked (Fig. 2).

Firing from the installation is carried out in single shots remotely from behind cover using a cable 8 (Fig. 1) attached to a sear 14 (Fig. 2).

To fire a shot, it is necessary to tighten the cable 8, while the sear 14 will rotate on the axis and release the firing pin 11, which, under the action of the mainspring 12, will rush forward and puncture the primer. A shot occurs, and powder gases from the nozzles of the propellant charge sleeve rush into the free cavity limited by the bolt body 10, the firing pin body 13 and the compensation sleeve 9 in the bolt, where the powder charge burns out, providing the specified intra-ballistic characteristics of the ammunition. To unload the installation, it is necessary to pull the striker 11 back, grasping the handle 17, while the sear 14, under the action of its spring 16, will rise up and hold the striker 11 in the rear position.

The described technical solution was implemented in the manufacture of ballistic barrels for a 40-mm automatic anti-personnel grenade launcher complex and tested by firing in various operating conditions, including temperature factors with the determination of guaranteed service life parameters, the main characteristics of the ballistic barrel were determined.

Claims (1)

The shutter of a ballistic installation contains a housing with a striking mechanism, in which a firing pin, a mainspring, a firing pin bushing, a sear, a bolt closure, a sear spring, a handle, a sear axis, truss protrusions and a compensation bushing are placed, characterized in that it contains a free internal volume representing a cavity limited on the outside by the diameter of the inner surface of the bolt body, and on the inside by the outer diameter of the firing pin bushing, and ends with a compensation bushing in the end part of the bolt body.