Mixed bullet strip device for relieving abrasion
A belt and warhead technology, used in offensive equipment, weapon accessories, barrels, etc., can solve the problems of unfavorable full combustion of the charge in the chamber, affecting the performance of the launching system, etc., and meet the performance requirements of the launching system and reduce friction loss. Effect
Inactive Publication Date: 2020-05-12
NANJING UNIV OF SCI & TECH
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Problems solved by technology
In addition, the initial movement resistance of the projectile produced by the plastic belt is significantly smaller than that produced by the metal belt under the same structural size, and the small initial movement resistance of the projectile is not conducive to the full combustion of the charge in the chamber. Ultimately affect the performance of the entire launch system
Method used
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Embodiment Construction
[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0015] The invention proposes a hybrid elastic belt device for reducing wear, which includes relatively thin metal elastic belt loops, plastic elastic belt loops and colloid with relatively high peel strength.
[0016] like figure 1 , there is a relatively narrow metal elastic belt ring 1 and a relatively wide plastic elastic belt ring 2, and the two are connected and fixed by colloid 3.
[0017] Pushed by the gunpowder gas after the bullet, the metal belt ring 1 squeezes into the barrel at first, and then the plastic belt ring 3 squeezes into the barrel. Arranging the metal belt ring 1 on the side of the bullet can prevent the metal belt from impacting the barrel groove and the beginning of the rifling at high speed. After the entire elastic belt device is completely squeezed into the barrel, the contact stress between the plastic elastic belt and the barr...
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The invention belongs to the field of inner bullet launching, and particularly relates to mixed bullet strip device for relieving abrasion. The mixed bullet strip device comprises a metal bullet stripring and a plastic bullet strip ring. The metal bullet strip ring is located on the bullet head side, and the plastic bullet strip ring is located on the bullet bottom side. The contact faces betweenthe metal bullet strip ring and the plastic bullet strip ring are fixed through glue. According to the mixed bullet strip device, the strength of a whole bullet strip structure is ensured through a metal bullet strip in a mixed bullet strip, and the emitter rotary stability requirement and the launching system performance requirement are met; the airtightness requirement of the whole bullet stripstructure is ensured through a plastic bullet strip in the mixed bullet strip, and an emitter is driven to rotate with assistance; and finally under the condition of not influencing the overall strength and the airtight performance of the bullet strip, frictional loss of the inner wall of a pipe body caused by the bullet strip is reduced.
Description
technical field [0001] The invention belongs to the field of internal bullet launching, and in particular relates to a hybrid elastic belt device for slowing wear. Background technique [0002] Projectile parts such as bullet belts are mainly used to provide the projectile with a rotational speed that ensures rotational stability and a closed gunpowder gas in the chamber. In order to ensure the effect of the belt sealing the gas in the chamber, the outer diameter of the belt is generally slightly larger than the diameter of the negative line of the barrel. This results in high contact stress between the belt and barrel, especially with integral metal belts. The structure of the belt has an important influence on the stability of the projectile, the wear of the barrel and the combustion process in the charge chamber. [0003] Existing bullet belt structure mainly is integral type metal bullet belt and plastic bullet belt. The strength of the metal elastic belt is greater t...
Claims
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IPC IPC(8): F41A21/18F41A35/00
CPCF41A21/18F41A35/00
Inventor 张小兵胡朝斌
Owner NANJING UNIV OF SCI & TECH