CN210464189U - Automatic silencing device of weapon - Google Patents

Abstract

The utility model provides a silencing device of an automatic weapon, which comprises a silencing bowl, a silencing body and a silencing barrel, wherein the rear end of the silencing barrel is provided with a locking 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 can be 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, the surface of the hollow shaft is provided with a plurality of slotted holes along the radial direction, the slotted holes are communicated with the inner hole of the hollow shaft, the hollow shaft is provided with a plurality of annular intercepting disks, and annular intercepting expansion chambers are formed between two adjacent annular; the silencing body is slidably arranged in the silencing barrel, the front end of the silencing body is respectively in threaded fastening connection with the silencing barrel and the silencing bowl, the surface of the silencing body is provided with a variable pitch spiral guide rib and a plurality of small holes, the intervals of the small holes are gradually increased from back to front along with the spiral guide rib, a spiral airflow channel is formed between the spiral guide rib and the silencing barrel, the muzzle noise can be obviously reduced, and muzzle flame and muzzle smoke are obviously reduced.

Description

Automatic silencing device of weapon

Technical Field

The utility model belongs to the technical field of firearms, specifically be an automatic weapon's silencing device.

Background

The automatic weapon silencing device is used as a device for reducing noise of weapons and reducing muzzle flame and muzzle smoke. The method has important significance for expanding the tactical performance of automatic weapons and performing anti-terrorism, saving the hostage and concealing and killing for reconnaissance personnel, special troops and polices.

Currently, there are four main categories according to the principle of noise reduction: resistive muffler device, small hole diffusion muffler device and loss muffler device. 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 noise elimination effect; the resistance noise elimination device has obvious middle and low frequency sound absorption effect and does not use sound absorption materials; the small-hole diffusion noise elimination device has the advantages that the noise elimination performance of the small-hole diffusion noise elimination device on low and medium frequency broadband can be realized, the sound absorption coefficient can be improved due to the small hole diameter, the width of a sound absorption frequency band can be increased due to the low porosity, and the position of a resonance sound absorption peak can be changed due to the depth of the hole plate. The design is tight, the resistance loss is small, the high temperature resistance is realized, and the service life is long; the loss silencing device consumes sound energy through nonlinear sound resistance or is filled with porous heat absorbing material after the perforated plate, so that gunpowder gas is further cooled and decompressed.

The silencer designed according to the single noise reduction principle can not meet the use requirement of the traditional automatic weapon tactical mission and the limitations of the automatic weapon structure and size requirement, so that the traditional silencer is mostly of a composite type. The first layers generally adopt a resistance, small hole diffusion and loss type structure, and the last layer adopts a resistance noise elimination structure. The existing silencing device for the automatic weapon has low noise and flame reducing efficiency, the gun is poor in concealment, and the using requirements of weapon users cannot be met.

Disclosure of Invention

To the defect among the prior art, the utility model provides an automatic weapon's silencing device can show and reduce the muzzle noise, and it is obvious to reduce muzzle flame, muzzle cigarette effect, and is less to automatic weapon's the shooting degree of accuracy and intensive influence, has improved the disguise that the firearms used.

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 is used for containing a bore of the firearm and connecting the bore with the locking firearm, the front end of the muzzle connector is provided with the silencing bowl, the axial leads of the muzzle connector, the silencing bowl, the silencing body and the silencing barrel are superposed, the silencing bowl is slidably arranged in the silencing body, the front end of the silencing bowl is provided with an external thread which 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 provided with a plurality of slotted holes along the radial direction, the slotted holes are communicated with the inner hole of the hollow shaft, the hollow shaft is also provided with a plurality of conical annular intercepting disks, and an annular intercepting expansion chamber is formed between each;

the noise reduction body is slidably arranged in the noise reduction barrel, the front end of the noise reduction body is provided with an external thread and an internal thread which are respectively fastened and connected with the noise reduction barrel and the noise reduction bowl, the surface of the noise reduction body is provided with a variable-pitch spiral guide rib and a plurality of small holes, the intervals of the small holes gradually increase from back to front along with the spiral guide rib, a spiral airflow channel is formed between the spiral guide rib and the noise reduction barrel, the spiral guide rib is used for increasing the length of the flowing direction of gunpowder gas and reducing the flow rate and pressure of the gunpowder gas, and the small holes are used for transferring noise frequency;

after the shot is ejected, gunpowder gas passes through an inner hole of a hollow shaft of the silencing bowl, the gas is released to the annular intercepting expansion chamber, the intercepting expansion and pressure reduction are carried out step by step, part of gas flow enters the spiral channel of the silencing body and flows out forwards, and the gas flow interacts with the gas flow in the silencing bowl step by step, so that when the gunpowder gas is ejected from the silencing device, the flow velocity and the pressure of the gunpowder gas are greatly reduced, and the suppression of noise 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.

Furthermore, the diameter of the inner hole of the hollow shaft of the silencing bowl is 1.2 times larger than that of the projectile. Can ensure that the pills smoothly pass through the inner hole of the silencing bowl.

Furthermore, 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. The service life and the assembly reliability of the product are ensured.

Furthermore, the silencing body and the silencing barrel are both thin-wall revolved bodies, and the silencing bowl is designed in an integrated forming mode. The influence of gunpowder gas on the shot is small, and the shooting intensity and accuracy of the weapon are not influenced.

The utility model has the advantages that:

1. the utility model discloses set up a plurality of slotted holes and be equipped with the annular intercepting plate that is the taper type on the hollow shaft surface of amortization bowl, slotted hole and hollow shaft hole intercommunication, form annular intercepting expansion chamber between two adjacent annular intercepting plate and the amortization body, the shot shooting back, gunpowder is gaseous through amortization bowl hole with gaseous release to annular intercepting expansion chamber, a plurality of intercepting expansion chambers can release the gaseous heat energy of gunpowder step by step, gas pressure and velocity of flow have been reduced, the noise reduction effect is showing, reach 16.5db, compare silencing device's 12db of the same kind, 37.5% improvement.

2. Set up aperture and variable pitch spiral direction muscle on the muffler surface, and the aperture interval is along with spiral direction muscle grow gradually forward, and the length of gaseous flow direction has been increased in setting up of spiral direction muscle, and the aperture setting does benefit to and shifts the noise frequency channel.

3. Silencing device sets up the airflow channel of two-layer different structure, form annular damming expansion chamber between amortization bowl and the amortization body, form spiral airflow channel between the amortization body and the amortization section of thick bamboo, the external wall of amortization is equipped with many apertures and communicates with each other with the amortization section of thick bamboo, high-pressure gas goes out the muzzle mouth after, by annular damming expansion chamber damming inflation decompression step by step, and simultaneously, partial air current is after getting into first order annular damming expansion chamber decompression, the spiral airflow channel who gets into between the amortization body and the amortization section of thick bamboo flows forward, hold back the air current interact that the expansion chamber flowed step by step with the annular between the amortization bowl and the.

4. The silencing bowl adopts a multilayer integrated design, the influence of gunpowder gas on the shot is small, the weapon shooting intensity and accuracy basically have no influence, and the influence is proved by a silencing device product identification test and an automatic weapon matching test.

5. The utility model discloses a silencing device long service life, through automatic weapon matching nature test, reach 5000 and send out more than, compare silencing device 4000 of the same kind and send out, improve 25%.

6. The utility model discloses an silencing device maintains the maintenance convenience, need not to disassemble, uses the brush can accomplish the routine maintenance.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the silencing pot;

FIG. 4 is a schematic structural view of a silencer;

FIG. 5 is a schematic structural view of a silencing bowl;

FIG. 6 is a schematic view of the gas flow direction of the present invention;

in the drawings: 1-silencing tube, 2-silencing body, 21-small hole, 22-variable pitch spiral guide rib,

3-silencing bowl, 31-hollow shaft, 32-annular intercepting disc, 33-slotted hole,

4-ring-shaped intercepting expansion chamber, 5-locking cylinder and 6-muzzle connector

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

In the present embodiment, the shooting direction of the firearm is taken as the front end,

as shown in fig. 1 to fig. 6, the automatic weapon silencing device comprises a silencing bowl 3, a silencing body 2 and a silencing tube 1 which are arranged in sequence from inside to outside, a locking tube 5 is arranged at the rear end of the silencing tube 1, a muzzle connector 6 is sleeved in the locking tube 5 and is used for containing a bore of a firearm and connecting the firearm with the locking firearm, the silencing bowl 3 is arranged at the front end of the muzzle connector 6, the axial leads of the muzzle connector 6, the silencing bowl 3, the silencing body 2 and the silencing tube 1 are overlapped, the silencing bowl 3 can be slidably arranged in the silencing body 2, external threads are arranged at the front end of the silencing bowl 3 and are 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 slots 33 are arranged on the surface of the hollow shaft 31 in the radial direction, the slots 33 are communicated with an inner hole of the hollow shaft, a plurality of conical annular intercepting discs 32 are arranged on the hollow shaft 31, and annular expansion chambers 4 are formed between two adjacent annular intercepting discs, each annular intercepting disc forms a powder gas intercepting surface, when powder gas passes through the channel, the section is suddenly enlarged and reduced, and sound waves of a certain frequency band are fed back or resonated.

In order to ensure that the shot smoothly passes 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 shot.

In order to ensure the use performance of the product and reduce the influence of gunpowder gas on the shot, the silencing bowl in the embodiment adopts a multilayer integrated design mode, so that the shooting intensity and accuracy of the weapon 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, which are respectively fastened and connected with the silencing barrel 1 and the silencing bowl 3 by threads, 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 interval of the small holes 21 is gradually increased from back to front along with the spiral guide ribs 22, a spiral airflow channel is formed between the spiral guide ribs 22 and the silencing barrel 1, the spiral guide ribs 22 can effectively increase the length of the gas flow direction of the gunpowder and reduce the flow rate and pressure of the gas of the gunpowder, the small holes 21 have the function of noise frequency band transfer, after the gas of the gunpowder enters the small holes from the annular intercepting and expanding chamber, the major part of the jet noise is transferred to ultrasonic frequency through the dense small holes, and as the gas passes forward, the large-area low-speed injection is formed after the injection is converged through the multistage small holes, 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 holes and the surface roughness of the silencing bowl, the silencing body and the silencing barrel are required to be more than ra0.8, and in order to reduce the weight of the silencing device, the silencing barrel and the silencing body are both thin-walled revolved bodies.

The utility model discloses a theory of operation:

after the projectile is ejected, gunpowder gas flows out of a gun mouth and is subjected to step-by-step interception expansion and decompression by an annular interception expansion chamber between the silencing bowl and the silencing body, meanwhile, partial gunpowder gas enters a first-stage interception expansion chamber for decompression and then enters a spiral gas flow channel between the silencing body and the silencing barrel to flow forwards, and the gas flowing out of the step-by-step interception expansion chamber between the silencing bowl and the silencing body interacts with the gas flowing out of the step-by-step interception expansion chamber between the silencing body and the silencing body, so that the flow speed and the pressure are further reduced, the maximum peak value of noise is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (5)

1. The utility model provides an automatic silencing device of weapon, includes the amortization bowl, the amortization body and the amortization section of thick bamboo that set gradually from inside to outside, the rear end of amortization section of thick bamboo is equipped with a locking section of thick bamboo, a locking section of thick bamboo endotheca is equipped with the muzzle connector for contain firearms thorax mouth and connect the locking firearms, the front end of muzzle connector is equipped with the amortization bowl, the axial lead coincidence of muzzle connector, amortization bowl, the amortization body and amortization section of thick bamboo, its characterized in that: the silencing bowl is slidably arranged in the silencing body, the front end of the silencing bowl is provided with an external thread which is fastened and connected with the silencing body through a thread, the middle part of the silencing bowl is a hollow shaft, the surface of the hollow shaft is provided with a plurality of slotted holes along the radial direction, the slotted holes are communicated with an inner hole of the hollow shaft, the hollow shaft is also provided with a plurality of conical annular intercepting disks, and an annular intercepting expansion chamber is formed between each two adjacent annular intercepting disks and the silencing body;

the noise reduction body is slidably arranged in the noise reduction barrel, the front end of the noise reduction body is provided with an external thread and an internal thread which are respectively fastened and connected with the noise reduction barrel and the noise reduction bowl, the surface of the noise reduction body is provided with a variable-pitch spiral guide rib and a plurality of small holes, the intervals of the small holes gradually increase from back to front along with the spiral guide rib, a spiral airflow channel is formed between the spiral guide rib and the noise reduction barrel, the spiral guide rib is used for increasing the length of the flowing direction of gunpowder gas and reducing the flow rate and pressure of the gunpowder gas, and the small holes are used for transferring noise frequency;

after the shot is ejected, gunpowder gas passes through an inner hole of a hollow shaft of the silencing bowl, the gas is released to the annular intercepting expansion chamber, the intercepting expansion and pressure reduction are carried out step by step, part of gas flow enters the spiral channel of the silencing body and flows out forwards, and the gas flow interacts with the gas flow in the silencing bowl step by step, so that when the gunpowder gas is ejected from the silencing device, the flow velocity and the pressure of the gunpowder gas are greatly reduced, and the suppression of noise during shooting is realized.

2. The automatic weapon silencing device of 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. The automatic weapon silencing device of claim 1, wherein: the diameter of the inner hole of the hollow shaft of the silencing bowl is 1.2 times larger than that of the projectile.

4. The automatic weapon silencing device of claim 1, wherein: the roughness of the inner holes and the surface of the silencing body, the silencing barrel and the silencing bowl is more than Ra0.8.

5. The automatic weapon silencing device according to any one of claims 1 to 4, wherein: the silencing body and the silencing barrel are both thin-wall revolved bodies, and the silencing bowl is designed in an integrated forming mode.

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