Short barrel extension and recoil type automatic rifle

Abstract

The invention discloses a segment sleeve short back collapse automatic rifle, including a casing, a hand grip, a sight, firing mechanism components, rotating locked bolt impels counter components, etc. The invention is characterized in that the rifle also includes a segment sleeve transmission device, an air shock absorption device and a barrel disassembly and replace device. The segment sleeve transmission device consists of a sliding segment sleeve, a buffer spring and an energy regulation screw pair. The air shock absorption device consists of an air shock absorption piston, a barrel, the casing and a casing big nut. The barrel disassembly and replace device consists of the casing, the casing big nut, a barrel locating bolt and a demountable barrel. For a motion mass center of the segment sleeve transmission device completely coincides with a bore axis, the dynamic and recoil force transmission completely coincides with the bore axis. And the radial differentiation during the recoilforce transmission process is avoided and reduced to the utmost extend. The stability and the shoot precision of the barrel are guaranteed on fire. The invention has the advantages of large power bullet adaptability, high shoot precision, fast shooing speed, stable and reliable action, simple and reasonable structure, etc.

Description

technical field [0001] The invention relates to firearms, in particular to a short-recoil automatic rifle with a high-power bullet, high shooting accuracy, fast firing rate and good reliability. Background technique [0002] The automation of firearms has significantly improved the combat effectiveness of light weapons, and automatic rifles have therefore become the main light weapons used on modern battlefields. The automatic principle and automatic mechanism of firearms have experienced nearly a hundred years of development and evolution, and they tend to be complete in theory and various in form. At present, the application on automatic rifles is relatively common, and there are mainly six automatic methods that are relatively mature in technology: free bolt type, semi-free bolt type, short recoil type of barrel, long recoil type of barrel, air-operated type and Blow type. Although there are so many automatic methods, none of them can make the automatic rifle perform re...

AI Technical Summary

Problems solved by technology

[0003] 1. Free bolt type: It cannot adapt to high-power bullets. The overweight bolt and the way of opening the gun will cause a serious drop in shooting accuracy.

[0004] 2. Semi-free bolt type: evolved from the free bolt type. In order to achieve the purpose of prolonging the locking time and increasing the initial velocity of the warhead, the roller wedge locking method is often used, which leads to poor mechanical properties and damage to materials and processing technology. High requirements, high cost, short life, poor stability and reliability

[0005] 3. Short-barrel recoil type: the rate of fire is low, and the single-shot accuracy is acceptable. Since the barrel is an integral sliding part, there is an assembly gap, resulting in a sudden drop in burst accuracy

However, because it gave up using the recoil as the energy source of the automaton, it set up a set of transmission mechanism outside the axis of the barrel, resulting in an increase in the radial moment of shooting, and the shooting accuracy is not high, especially the burst accuracy is not high.

In addition, due to the huge pressure difference between the barrel and the piston air chamber when the bullet is fired, a strong instantaneous jet of gunpowder gas is formed at the air guide hole, causing the barrel to vibrate due to strong radial force, which further affects the shooting performance. precision

[0008] 6. Blowing type: The principle and disadvantages are the same as the air-guiding type, and because the piston chamber is moved to the inside of the casing, the internal pollution of the casing is aggravated and the reliability is deteriorated

It can be seen that the deficiencies of the above automatic methods are mainly reflected in the organic integration of the four performance indicators of adaptability to high-power bullets, shooting accuracy, firing rate, and reliability.

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