CN110425929B - Silencing device of automatic weapon - Google Patents
Silencing device of automatic weapon Download PDFInfo
- Publication number
- CN110425929B CN110425929B CN201910873790.7A CN201910873790A CN110425929B CN 110425929 B CN110425929 B CN 110425929B CN 201910873790 A CN201910873790 A CN 201910873790A CN 110425929 B CN110425929 B CN 110425929B
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- silencing
- bowl
- silencer
- hollow shaft
- barrel
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 127
- 230000003584 silencer Effects 0.000 claims abstract description 29
- 239000003721 gunpowder Substances 0.000 claims description 24
- 230000006837 decompression Effects 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims 5
- 241001330002 Bambuseae Species 0.000 claims 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 5
- 239000011425 bamboo Substances 0.000 claims 5
- 210000000038 chest Anatomy 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
- 230000000694 effects Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000013095 identification testing Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
The invention provides a silencing device of an automatic weapon, which comprises a silencing bowl, a silencing body and a silencing barrel, wherein a locking barrel is arranged at the rear end of the silencing barrel, a muzzle connector is sleeved in the locking barrel, the front end of the muzzle connector is provided with the silencing bowl, the silencing bowl is slidably arranged in the silencing body, the front end of the silencing bowl is in threaded fastening connection with the silencing body, the middle part of the silencing bowl is a hollow shaft, a plurality of slotted holes are radially formed in the surface of the hollow shaft, the slotted holes are communicated with an inner hole of the hollow shaft, a plurality of annular shutoff plates are arranged on the hollow shaft, and an annular shutoff expansion chamber is formed between two adjacent annular shutoff plates and the silencing body; the silencer is slidably arranged in the silencer cylinder, the front end of the silencer is respectively and fixedly connected with the silencer cylinder and the silencer bowl in a threaded manner, the surface of the silencer is provided with variable-pitch spiral guide ribs and a plurality of small holes, the intervals of the small holes gradually become larger from back to front along with the spiral guide ribs, a spiral airflow channel is formed between the spiral guide ribs and the silencer cylinder, muzzle noise can be remarkably reduced, and muzzle flame and muzzle smoke are remarkably reduced.
Description
Technical Field
The invention belongs to the technical field of firearms, and particularly relates to a silencing device of an automatic weapon.
Background
The automatic weapon silencer is used as a device for reducing weapon noise and reducing muzzle flame and muzzle smoke. Has important significance for expanding the tactical performance of automatic weapons and executing anti-terrorism, rescuing people and hidden killing for investigation personnel, special forces and police.
At present, there are four main categories according to the principle of noise reduction: resistive muffling devices, small hole diffusion muffling devices and loss muffling devices. The resistive muffler device has the advantages of remarkable sound absorption effect on middle and high frequency bands, simple processing and manufacturing and poor low-frequency muffler effect; the resistant muffler device has remarkable middle-low frequency sound absorption effect and does not use sound absorption materials; the small hole diffusion muffler has high sound absorption coefficient, low porosity, wide sound absorption band and high pore plate depth. The design is tight, the resistance loss is small, the high temperature resistance is high, and the service life is long; the loss muffler device consumes sound energy through nonlinear acoustic resistance or is filled with porous heat absorbing materials after perforated plates, so that gunpowder and fuel gas are further cooled and decompressed.
In combination with the existing tactical tasks of automatic weapons and the limitations of the structural and dimensional requirements of automatic weapons, the muffler designed according to the single noise reduction principle cannot meet the use requirements of the muffler, so that most of the existing mufflers are composite. The first few layers generally adopt a resistance, pore diffusion and loss type structure, and the last layer adopts a resistive noise elimination structure. The existing silencing device for the automatic weapon is low in noise reduction and flame reduction efficiency, and the gun is poor in use concealment, so that the use requirement of a weapon user cannot be met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the silencing device for the automatic weapon, which can obviously reduce muzzle noise, reduce muzzle flame and muzzle smoke, has obvious effect, has small influence on shooting accuracy and density of the automatic weapon, and improves the use concealment of the firearm.
The invention relates to a silencing device of an automatic weapon, which comprises a silencing bowl, a silencing body and a silencing barrel which are sequentially arranged from inside to outside, wherein the rear end of the silencing barrel is provided with a locking barrel, a muzzle connector is sleeved in the locking barrel and used for containing a muzzle and connecting a locking firearm, the front end of the muzzle connector is provided with the silencing bowl, the muzzle connector, the silencing bowl, the silencing body and the silencing barrel are overlapped, the silencing bowl is slidably arranged in the silencing body, the front end of the silencing bowl is provided with external threads and is in threaded fastening connection with the silencing body, the middle part of the silencing bowl is a hollow shaft, the surface of the hollow shaft is radially provided with a plurality of slotted holes, the slotted holes are communicated with an inner hole of the hollow shaft, a plurality of conical annular shutoff discs are further arranged on the hollow shaft, and an annular shutoff expansion chamber is formed between two adjacent annular shutoff discs and the silencing body;
The silencer is arranged in the silencing barrel in a sliding way, the front end of the silencer is provided with an external thread and an internal thread which are respectively and fixedly connected with the silencing barrel and the silencing bowl, the surface of the silencer is provided with a variable pitch spiral guide rib and a plurality of small holes, the intervals of the small holes gradually become larger from back to front along with the spiral guide rib, a spiral air flow channel is formed between the spiral guide rib and the silencing barrel, the spiral guide rib is used for increasing the flow direction length of gunpowder gas, the flow speed and the pressure of the gunpowder gas are reduced, and the small holes are used for transferring noise frequency bands;
after shot is ejected, the gunpowder gas passes through the inner hole of the hollow shaft of the silencing bowl, the gas is released to the annular interception expansion chamber, interception expansion and decompression are carried out step by step, partial air flow enters the spiral channel of the silencing body and flows forward to interact with the air flow step by step in the silencing bowl, so that when the gunpowder gas is ejected from the silencing device, the air flow speed and pressure of the gunpowder gas are greatly reduced, and the noise suppression during shooting is realized.
Furthermore, the front end of the silencing body is provided with a limiting step, and the silencing body is limited by the limiting step when in threaded connection with the silencing barrel.
Further, the diameter of the inner hole of the hollow shaft of the silencing bowl is 1.2 times larger than the diameter of the projectile. Can ensure that the pellets smoothly pass through the inner hole of the silencing bowl.
Further, the roughness of the inner holes and the surfaces of the silencing body, the silencing cylinder and the silencing bowl is more than Ra0.8. The service life and the assembly reliability of the product are ensured.
Furthermore, the silencing body and the silencing cylinder are thin-wall revolution bodies, and the silencing bowl is integrally formed. The gunpowder gas has little influence on the projectile, and the shooting density and accuracy of the weapon are not affected.
The invention has the beneficial effects that:
1. according to the invention, the surface of the hollow shaft of the silencing bowl is provided with a plurality of slotted holes and is provided with the conical annular shutoff plates, the slotted holes are communicated with the inner holes of the hollow shaft, the annular shutoff expansion chambers are formed between the two adjacent annular shutoff plates and the silencing body, after the projectile is shot, the gunpowder gas is released to the annular shutoff expansion chambers through the inner holes of the silencing bowl, the plurality of shutoff expansion chambers can release the heat energy of the gunpowder gas step by step, the gas pressure and the flow velocity are reduced, the noise reduction effect is obvious, the noise reduction effect is up to 16.5db, and the noise reduction effect is improved by 37.5% compared with the noise reduction device of the same type.
2. The small holes and the variable pitch spiral guide ribs are arranged on the surface of the silencing body, the intervals of the small holes gradually become larger along with the spiral guide ribs, the length of the gas flow direction is increased due to the arrangement of the spiral guide ribs, and noise frequency bands can be transferred due to the arrangement of the small holes.
3. The silencer is provided with two layers of airflow channels with different structures, an annular interception expansion chamber is formed between the silencer bowl and the silencer body, a spiral airflow channel is formed between the silencer body and the silencer barrel, a plurality of small holes are formed in the outer wall of the silencer body and are communicated with the silencer barrel, high-pressure gas is intercepted, expanded and decompressed step by the annular interception expansion chamber, meanwhile, partial airflow enters the annular interception expansion chamber of the first stage and is decompressed, and then flows out forwards through the spiral airflow channel between the silencer body and the silencer barrel, and interacts with the airflow flowing out step by the annular interception expansion chamber between the silencer bowl and the silencer body, so that the flow speed and pressure are further reduced.
4. The silencing bowl adopts a multilayer integrated design, the impact of gunpowder gas on the projectile is small, the shooting density and accuracy of the weapon are basically not influenced, and the silencing bowl has been proved by a silencing device product identification test and an automatic weapon matching test.
5. The silencer provided by the invention has long service life, and the silencer reaches more than 5000 bolts through an automatic weapon matching test, and is improved by 25% compared with 4000 bolts of the same type.
6. The silencer is convenient to maintain, and can be routinely maintained without disassembling the silencer and using a hairbrush.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of a sound deadening cylinder;
FIG. 4 is a schematic structural view of a muffler;
FIG. 5 is a schematic structural view of a sound deadening bowl;
FIG. 6 is a schematic diagram of the gas flow direction of the present invention;
in the accompanying drawings: 1-a silencing cylinder, 2-a silencing body, 21-small holes, 22-variable pitch spiral guide ribs,
3-Silencing bowl, 31-hollow shaft, 32-annular shutoff plate, 33-slotted hole,
4-Annular closure expansion chamber, 5-locking barrel, 6-muzzle connector
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
In this embodiment, the firing direction of the firearm is taken as the front end,
The automatic weapon silencing device comprises a silencing bowl 3, a silencing body 2 and a silencing barrel 1 which are sequentially arranged from inside to outside, wherein a locking barrel 5 is arranged at the rear end of the silencing barrel 1, a muzzle connecting body 6 is sleeved in the locking barrel 5 and used for containing a muzzle and connecting a locking firearm, the front end of the muzzle connecting body 6 is provided with the silencing bowl 3, the axes of the muzzle connecting body 6, the silencing bowl 3, the silencing body 2 and the silencing barrel 1 coincide, the silencing bowl 3 is slidably arranged in the silencing body 2, an external thread is arranged at the front end of the silencing bowl 3 and is in threaded fastening connection with the silencing body 2, a hollow shaft 31 is arranged in the middle of the silencing bowl, a plurality of slotted holes 33 are formed in the surface of the hollow shaft 31 in the radial direction, the slotted holes 33 are communicated with an inner hole of the hollow shaft, a plurality of conical annular shutoff discs 32 are arranged on the hollow shaft 31, an annular expansion chamber 4 is formed between two adjacent annular shutoff discs 32 and the silencing body 2, each annular shutoff disc forms a gunpowder gas shutoff surface, when a gunpowder gas passes through a channel, the section suddenly becomes larger and smaller, and a certain sound wave is fed back or a resonance frequency band is generated.
In order to ensure that the pellets smoothly pass through the inner hole of the silencing bowl, the diameter of the inner hole of the hollow shaft of the silencing bowl is 1.2 times larger than that of the pellets.
In order to ensure the usability of the product and reduce the influence of gunpowder gas on the projectile, the silencing bowl in the embodiment adopts a multilayer integrated design mode, so that the density and accuracy of weapon shooting are ensured.
In this embodiment, the silencing body 2 is slidably installed in the silencing barrel 1, the front end of the silencing body 2 is provided with an external thread and an internal thread, the external thread and the internal thread are respectively in threaded fastening connection with the silencing barrel 1 and the silencing bowl 3, the surface of the silencing body 2 is provided with a variable pitch spiral guide rib 22 and a plurality of small holes 21, the intervals of the small holes 21 gradually become larger along with the spiral guide rib 22 from back to front, a spiral airflow channel is formed between the spiral guide rib 22 and the silencing barrel 1, the spiral guide rib 22 can effectively increase the flowing length of gunpowder gas, the flow speed and the pressure of the gunpowder gas are reduced, the small holes 21 have the function of transferring noise frequency bands, after the gunpowder gas enters the small holes from the annular intercepting expansion chamber, the main part of the injection noise is transferred into ultrasonic frequencies through the dense small holes, and large-area low-speed injection is formed after the injection of the multi-stage small holes is converged along with the forward transfer of the gas, and the generated noise is reduced;
In this embodiment, in order to ensure the service life and the assembly reliability of the product, the inner hole and the surface roughness of the silencing bowl, the silencing body and the silencing barrel are required to be above Ra0.8, and in order to reduce the weight of the silencing device, the silencing barrel and the silencing body are thin-walled revolution bodies.
The working principle of the invention is as follows:
After the shot is ejected, the gunpowder gas flows out of the muzzle, is subjected to gradual closure expansion and decompression by the annular closure expansion chamber between the silencing bowl and the silencing body, and simultaneously, after the part of gunpowder gas enters the first-stage closure expansion chamber and is subjected to decompression, the part of gunpowder gas enters the spiral airflow channel between the silencing body and the silencing barrel and flows forwards, and interacts with the gas flowing out of the gradual closure expansion chamber between the silencing bowl and the silencing body, so that the flow speed and the pressure are further reduced, the maximum peak value of noise is reduced, and the purpose of silencing is achieved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (5)
1. The utility model provides an automatic silencing device of weapon, includes from inside to outside amortization bowl, amortization body and amortization section of thick bamboo that sets gradually, the rear end of amortization section of thick bamboo is equipped with locking section of thick bamboo, locking section of thick bamboo endotheca is equipped with the muzzle connector for hold the firearms thorax mouth and connect locking firearms, the front end of muzzle connector is equipped with amortization bowl, the axial lead coincidence of muzzle connector, amortization bowl, amortization body and amortization section of thick bamboo, its characterized in that: the silencing bowl is slidably arranged in the silencing body, an external thread is arranged at the front end of the silencing bowl and is in threaded fastening connection with the silencing body, a hollow shaft is arranged in the middle of the silencing bowl, a plurality of slotted holes are formed in the surface of the hollow shaft along the radial direction and are communicated with an inner hole of the hollow shaft, a plurality of conical annular shutoff plates are further arranged on the hollow shaft, and an annular shutoff expansion chamber is formed between two adjacent annular shutoff plates and the silencing body;
The silencer is arranged in the silencing barrel in a sliding way, the front end of the silencer is provided with an external thread and an internal thread which are respectively and fixedly connected with the silencing barrel and the silencing bowl, the surface of the silencer is provided with a variable pitch spiral guide rib and a plurality of small holes, the intervals of the small holes gradually become larger from back to front along with the spiral guide rib, a spiral air flow channel is formed between the spiral guide rib and the silencing barrel, the spiral guide rib is used for increasing the flow direction length of gunpowder gas, the flow speed and the pressure of the gunpowder gas are reduced, and the small holes are used for transferring noise frequency bands;
after shot is ejected, the gunpowder gas passes through the inner hole of the hollow shaft of the silencing bowl, the gas is released to the annular interception expansion chamber, interception expansion and decompression are carried out step by step, partial air flow enters the spiral channel of the silencing body and flows forward to interact with the air flow step by step in the silencing bowl, so that when the gunpowder gas is ejected from the silencing device, the air flow speed and pressure of the gunpowder gas are greatly reduced, and the noise suppression during shooting is realized.
2. A silencing device for an automatic weapon according to claim 1, wherein: the front end of the silencing body is provided with a limiting step, and the silencing body is limited by the limiting step when in threaded connection with the silencing barrel.
3. A silencing device for an automatic weapon according to claim 1, wherein: the diameter of the inner hole of the hollow shaft of the silencing bowl is 1.2 times larger than the diameter of the projectile.
4. A silencing device for an automatic weapon according to claim 1, wherein: the roughness of the inner holes and the surfaces of the silencing body, the silencing barrel and the silencing bowl is more than Ra0.8.
5. A silencing apparatus for an automatic weapon according to any of claims 1-4, wherein: the silencing body and the silencing barrel are thin-wall revolution bodies, and the silencing bowl is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873790.7A CN110425929B (en) | 2019-09-17 | Silencing device of automatic weapon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873790.7A CN110425929B (en) | 2019-09-17 | Silencing device of automatic weapon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425929A CN110425929A (en) | 2019-11-08 |
| CN110425929B true CN110425929B (en) | 2024-07-12 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210464189U (en) * | 2019-09-17 | 2020-05-05 | 重庆建设工业(集团)有限责任公司 | Automatic silencing device of weapon |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210464189U (en) * | 2019-09-17 | 2020-05-05 | 重庆建设工业(集团)有限责任公司 | Automatic silencing device of weapon |
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