CN218937194U - Hierarchical energy-absorbing bullet catcher - Google Patents
Hierarchical energy-absorbing bullet catcher Download PDFInfo
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- CN218937194U CN218937194U CN202222930137.XU CN202222930137U CN218937194U CN 218937194 U CN218937194 U CN 218937194U CN 202222930137 U CN202222930137 U CN 202222930137U CN 218937194 U CN218937194 U CN 218937194U
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- positioning sleeve
- firing pin
- damping body
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Abstract
The utility model discloses a hierarchical energy-absorbing bullet catcher, and belongs to the technical field of grenades. The bullet catcher comprises a shearing body, a firing pin, a sealing rubber ring and a positioning sleeve; a damping body and a speed reducing body are arranged below the striking pin in the positioning sleeve; the speed reducer, the damping body and the striking pin are speed reducing parts, the hardness is gradually increased, and a linear speed reducing environment is provided for the warhead; the contact surface of the deceleration body and the bullet head is provided with a conical prefabricated hole, and the conical prefabricated hole plays a positive role when the bullet head contacts with the conical prefabricated hole, so that penetration of the bullet head along the axial direction of the grenade is ensured, and the damping body is ensured to complete the established task; the positioning sleeve is I-shaped, and a reasonable deformation space is reserved for deformation expansion of the speed reducer. The four-layer hardness step-by-step enhanced speed reducing mechanism and the reserved deformation space design of the bullet catcher can resist the breakdown of a 5.8-millimeter universal bullet, counteract the transverse expansion when a 7.62-millimeter common bullet is captured, resist the rolling of the 5.56-millimeter common bullet, and ensure the safety of shooting personnel under the condition of false loading.
Description
Technical Field
The utility model relates to the technical field of grenades, in particular to a hierarchical energy-absorbing bullet catcher.
Background
The grenade belongs to individual weapon equipment, is suitable for low-strength assault combat environment, is hung in front of a gun barrel, and is used for shooting ultra-caliber ammunition by using a gun and a bullet or an empty ammunition. The grenade is driven to fly by the shock wave generated when the propellant in the bullet burns, the old grenade is matched with a special grenade launcher and an empty grenade for launching (such as 67 mm broken grenade), the bullet (live shell) in the rifle chamber must be withdrawn during the launching, and the grenade is inserted on the launcher to be loaded with the empty grenade for shooting. The firing mode is complex to operate, can easily miss a fighter, and more seriously, can cause the accident of gun destruction and death once firing practice is misused. The occurrence and application of the bullet catcher in the 90 mm grenade ends the history of launching the grenade by the empty-packing bullet in China. The bullet catcher is also subjected to multiple updating, wherein the bullet catcher has a baffle type bullet catcher and a general bullet catcher which have good effects.
The baffle-type bullet catcher consists of multiple layers of baffles, and the action process is that the bullet of the bullet passes through a plurality of metal baffles, so that the bullet is blocked to attenuate the speed until the bullet is finally caught in the bullet catcher. The bullet catcher has a relatively complex structure, can be suitable for bullets with different calibers through a multistage deceleration design, is suitable for bullets with different bullets such as lead cores, steel cores, soft steel cores and the like, and greatly improves the universalization degree of the bullet catcher. But the bullet catcher has poor adaptability due to larger volume and mass, and has been replaced by other novel bullet catcher at present. A schematic view of the baffle-type bullet trap is shown in FIG. 1, wherein 1-baffle, 2-spacer ring
The universal bullet catcher is a current bullet catcher which is commonly used in all countries in the world, has the advantages of simple structure, small volume, light weight, safety, reliability and good universality, and is suitable for common bullet shooting with different calibers. The bullet catcher integrates the advantages of the previous generations of bullet catcher, and has the characteristics of reliable bullet catching and small deformation of the tail pipe caused by bullet impact through material selection and structural optimization design. The structure of the device consists of a limit sleeve, a speed reducer, a protective cover and the like. The speed reducer is made of metal materials with good plasticity, easy deformation and corrosion resistance. When bullet warhead strikes and penetrates the speed reducer, the bullet is penetrated through the speed reducer to realize speed reduction, the speed reducer is embedded into the limit sleeve due to extrusion expansion deformation, and the impact protective sleeve is blocked after the bullet penetrates the speed reducer, so that the energy of the bullet is finally converted into the firing kinetic energy of the grenade, the bullet warhead is captured, and the purpose of initial speed firing of the grenade is provided. A schematic of a generic projectile catcher is shown in fig. 2.
Disclosure of Invention
The utility model aims to provide a hierarchical energy-absorbing bullet catcher, which not only has the capability of resisting 5.8mm universal bullet armor piercing, but also counteracts the transverse expansion when capturing 7.62mm common bullets, and can also resist the rolling of 5.56mm common bullets by adopting a four-layer gradual-hardness-enhanced deceleration design and a reserved deformation space design. The novel grenade is ensured to be launched safely and reliably by using three kinds of bullet (live ammunition) of 5.8mm common bullet, 5.56mm common bullet and 7.62mm common bullet.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a hierarchical energy-absorbing bullet catcher comprises a shearing body, a firing pin, a sealing rubber ring and a positioning sleeve; a damping body and a speed reducing body are arranged below the striking pin in the positioning sleeve;
the shearing body is concave and is positioned at the topmost end of the bullet catcher, and is placed on a boss at the top end of the firing pin to be in direct contact with the firing pin;
the firing pin is in a tower shape and is positioned on the second layer of the bullet catcher, the lower end of the outer edge of the firing pin is bonded with the sealing rubber ring with a rectangular cross section through the military shellac paint, and the inner side of the firing pin is contacted with the damping body in a convex shape;
the lower part of the damping body is provided with an inverted concave-shaped speed reducer body, the damping body and the speed reducer body are placed in a positioning sleeve together, a sealing rubber ring with a circular section is arranged below the outer edge of the upper end of the positioning sleeve, and the positioning sleeve is bonded with the outer edge of a striking pin above the damping body through a sealing rubber pad;
the speed reducer, the damping body and the striking pin are speed reducing parts, the hardness is gradually increased, and a linear speed reducing environment is provided for the warhead;
the contact surface of the deceleration body and the bullet head is provided with a conical prefabricated hole, and the conical prefabricated hole plays a positive role when the bullet head contacts with the conical prefabricated hole, so that penetration of the bullet head along the axial direction of the grenade is ensured, and the damping body is ensured to complete the established task;
the positioning sleeve is I-shaped, and a reasonable deformation space is reserved for deformation expansion of the speed reducer.
The utility model has the following benefits:
1. the four-layer hardness step-by-step enhanced speed reducing mechanism and the design of the reserved deformation space can resist the breakdown of a 5.8-millimeter universal bullet, counteract the transverse expansion when a 7.62-millimeter common bullet is captured, and resist the rolling of the 5.56-millimeter common bullet;
2. the utility model can be compatible with the firing of a plurality of bullets and can ensure the safety of shooting personnel under the condition of false filling.
Drawings
FIG. 1 is a schematic view of a prior art septum type bullet trap;
FIG. 2 is a schematic diagram of a prior art generic projectile catcher;
FIG. 3 is a schematic view of a hierarchical projectile catcher of the present utility model.
Wherein, 1-firing pin, 2-damping body, 3-speed reducer, 4-locating sleeve, 5-sealing rubber ring, 6-sealing rubber pad and 7-shearing body
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The utility model is described below with reference to the drawings and examples. The utility model aims to design a bullet catcher capable of catching bullets with steel cores, soft steel cores and lead core tips and bullets with rigid bullet core flat bullets, and a bullet catcher capable of reliably ensuring the safety of a shooter when the armor piercing bullets are erroneously loaded, and the overall structure of the bullet catcher is shown in figure 3.
A hierarchical energy-absorbing bullet catcher comprises a shearing body, a firing pin, a sealing rubber ring and a positioning sleeve; a damping body and a speed reducing body are arranged below the striking pin in the positioning sleeve; the shearing body is concave and is positioned at the topmost end of the bullet catcher, and is placed on a boss at the top end of the firing pin to be in direct contact with the firing pin; the firing pin is in a tower shape and is positioned on the second layer of the bullet catcher, the lower end of the outer edge of the firing pin is bonded with the sealing rubber ring with a rectangular cross section through the military shellac paint, and the inner side of the firing pin is contacted with the damping body in a convex shape; the lower part of the damping body is provided with an inverted concave-shaped speed reducer body, the damping body and the speed reducer body are placed in a positioning sleeve together, a sealing rubber ring with a circular section is arranged below the outer edge of the upper end of the positioning sleeve, and the positioning sleeve is bonded with the outer edge of a striking pin above the damping body through a sealing rubber pad;
the speed reducer, the damping body and the striking pin are speed reducing parts, the hardness is gradually increased, and a linear speed reducing environment is provided for the warhead; the contact surface of the deceleration body and the bullet head is provided with a conical prefabricated hole, and the conical prefabricated hole plays a positive role when the bullet head contacts with the conical prefabricated hole, so that penetration of the bullet head along the axial direction of the grenade is ensured, and the damping body is ensured to complete the established task; the positioning sleeve is I-shaped, and a reasonable deformation space is reserved for deformation expansion of the speed reducer.
The design idea of the utility model is expressed as follows:
compared with early-shaped grenades, the novel grenade has higher requirements on the adaptability of the grenade to the grenade: it is desirable to be able to adapt to a variety of bullets (7.62 common bullets, 5.8 common bullets, 5.56 common bullets); the safe and reliable firing of the live ammunition can be ensured; the safety of the shooter can be ensured when the armor piercing bullet is filled in error.
The 5.8mm common bullet core is in a pointed shape, the 7.62mm common bullet core is in a blunt shape, and when the bullet catcher is impacted, the 5.8mm common bullet core has higher hardness and larger kinetic energy, has good armor piercing performance, and when the 7.62mm common bullet impacts the bullet catcher, the bullet core is deformed greatly, so that transverse expansion is generated. 5.56 general bullet does not have the steel core, and the soft plumbous is filled in the bullet, and the copper sheet that the warhead outside parcel is very thin moreover, and whole warhead just becomes very soft, and the warhead breaks the bullet core rapidly and warp and produce transverse expansion rapidly when hitting the speed reducer body. The high-safety and universality design of the bullet catcher is obviously required, and under the constraint of full bullet weight, the bullet catcher must have the characteristics of small volume, light weight, safe and reliable bullet catcher, good universality and the like, and the performance design of the bullet catcher is a key breakthrough point of the utility model.
The bullet is ejected to leave the muzzle and is provided with a certain rotation, when the rotating bullet is in direct contact with a harder metal plane, deflection is very easy to occur, the direction of the penetration speed reducer of the bullet is possibly caused to deviate from the axis, the acting force of the penetration speed reducer deviates to one side of the tail pipe, the tail pipe is deformed or damaged, and the grenade is disabled or a safety accident occurs. Therefore, the guiding and guiding is necessary in the initial deceleration stage, conical or arc prefabricated holes matched with the bullet are prefabricated on the contact surface of the deceleration body and the bullet, the guiding effect is achieved when the bullet contacts with the conical or arc prefabricated holes, penetration of the bullet along the axial direction of the grenade is ensured, and the bullet catching body is ensured to complete the established task.
In the grenade development process, the phenomenon of failure of catching the grenade caused by large strength difference of two-stage speed reducing parts occurs. If the bullet is decelerated at a first stage, the bullet with high kinetic energy impacts the second stage of deceleration body with high hardness, and the tip of the bullet is rapidly passivated under the action of axial load, if the bullet core material is not strong enough, the bullet will be sheared and damaged at an angle of 45 degrees to the bullet axis, resulting in failure of the bullet and brittle fracture, which may cause cracking of the positioning sleeve and tail pipe. Therefore, the speed reducer is designed to be gradually reduced, the speed reducing part is divided into three to four layers, the hardness is gradually enhanced, a linear speed reducing environment is provided for the bullet, the initial part can be made of metal with lower strength such as aluminum or copper, the middle section can be made of a middle hard material made of steel, the end section can be made of a high-strength material subjected to heat treatment, the strength of the connecting screw part can ensure that the bullet can be reliably blocked, the bullet of the bullet can be prevented from accidentally penetrating through the bullet catcher, and the safety of the fighter part is ensured.
When the bullet head of the bullet invades the speed reducer, radial deformation of the speed reducer can be caused, deformation expansion force of the speed reducer acts on the wall of the positioning sleeve, if the gap between the positioning sleeve and the inner wall of the tail pipe is too small, sufficient deformation space of the positioning sleeve is not ensured, the tail pipe can be extruded and deformed, and when the deformation quantity of the tail pipe exceeds a plastic range, tail pipe cracking can occur to cause failure of the grenade. Therefore, reasonable deformation space is reserved between the bullet catcher positioning sleeve and the tail pipe, and the action reliability of the grenade can be effectively improved.
According to analysis of characteristics of the grenade catcher and the grenade design experience, the grenade catcher is prefabricated, guided and guided, the grenade catcher is designed in a mode of gradually decelerating and reserving deformation space, and as shown in figure 3; the hierarchical energy-absorbing bullet catcher decelerates in four stages, and the bullet firstly impacts the deceleration body to complete the first deceleration; after passing through the speed reducing body, the speed reducing body is caught by the damping body to finish the second speed reduction; the bullet is embedded into the damping body to push the firing pin to move forwards under the inertia effect, so that the third deceleration is completed; and finally, shearing the contact part of the shearing body and the firing pin, and simultaneously deforming the damping body to consume redundant kinetic energy to finish fourth deceleration. The four-stage buffer structure can effectively ensure that the bullet catcher can reliably catch bullets, ensure the safety of the shooting process and improve the action reliability of the bullets.
The aluminum positioning sleeve is designed into an I-shaped revolving body structure, so that transverse deformation generated by the penetration of a bullet into the speed reducing body and the damping body can be counteracted, the inner wall of the tail pipe is prevented from being extruded, the speed reducing body with the guide hole can reduce the kinetic energy of the bullet when the bullet is impacted, meanwhile, the direction of the bullet can be guided, the bullet continuously impacts the damping body after the bullet breaks through the speed reducing body, the bullet breaks through the damping body and impacts the striking pin after being decelerated again, the striking pin shears the shearing body to move forwards, and the striking pin captures the bullet in the groove. The impact plug body and the bullet core cladding layer generated by the bullet breaking through the speed reducing body are filled between the groove of the damping body and the speed reducing body, so that the positioning sleeve is prevented from being transversely extruded.
The deceleration body material is selected from a rod H62-Y2, the incoming material is annealed, the elongation is not less than 40%, and the surface of the part is passivated. The damping body material is 40Cr, the heat treatment hardness reaches HRC 28-32, the firing pin material is 40Cr, and the heat treatment hardness reaches HRC 32-36. And 7, selecting 7A04-T6 as a shearing body material, and carrying out corrosion prevention treatment on the parts. The positioning sleeve material is selected from rods 6A02-T4, and the parts are subjected to chemical oxidation treatment.
Through structural design, material selection and test verification, the hierarchical energy-absorbing bullet catcher with the gradient energy-absorbing shear structure comprising a speed reducer, a damping body, a firing pin and a shearing body can effectively ensure that the bullet catcher can reliably catch bullets, meets shooting requirements of using common bullets of 7.62mm, 5.8mm and 5.56mm, and has safe and reliable effects.
This novel grenade needs to adapt to the ordinary bullet of 5.8mm, and the ordinary bullet of 7.62mm, the ordinary bullet of 5.56mm, the security of shooter when the armor-piercing bullet of 5.8mm is filled in by mistake. The following table shows the comparison results of adaptability tests of the universal bullet catcher and the hierarchical energy-absorbing bullet catcher:
table 1 general applicability test comparison results
Compared with the test of 80 rounds of co-consumed ammunition, the level energy-absorbing ammunition catcher has the advantages that the catching capability of the level energy-absorbing ammunition catcher for 5.8mm ammunition and 5.56mm ammunition is improved, and the safety of a shooter during the misloading of 5.8mm armor-piercing ammunition is greatly improved.
Claims (8)
1. The hierarchical energy-absorbing bullet catcher is characterized by comprising a shearing body, a firing pin, a sealing rubber ring and a positioning sleeve; a damping body and a speed reducing body are arranged below the striking pin in the positioning sleeve;
the shearing body is concave and is positioned at the topmost end of the bullet catcher, and is placed on a boss at the top end of the firing pin to be in direct contact with the firing pin;
the firing pin is in a tower shape and is positioned on the second layer of the bullet catcher, the lower end of the outer edge of the firing pin is adhered with the sealing rubber ring with a rectangular cross section through the military shellac paint, and the inner side of the firing pin is contacted with the damper body in a convex shape;
the damping device is characterized in that an inverted concave-shaped speed reducer is arranged below the damping body, the damping body and the speed reducer are arranged in a positioning sleeve together, a sealing rubber ring with a circular section is arranged below the outer edge of the upper end of the positioning sleeve, and the positioning sleeve is bonded with the outer edge of a beating needle above the damping body through a sealing rubber pad;
the speed reducer, the damping body and the striking pin are speed reducing parts, the hardness is gradually increased, and a linear speed reducing environment is provided for the warhead;
the contact surface of the deceleration body and the bullet head is provided with a conical prefabricated hole, and the conical prefabricated hole plays a positive role when the bullet head contacts with the conical prefabricated hole, so that penetration of the bullet head along the axial direction of the grenade is ensured, and the damping body is ensured to complete the established task;
the locating sleeve is I-shaped, and a reasonable deformation space is reserved for deformation expansion of the speed reducer.
2. The layered energy absorber of claim 1 wherein said spacer sleeve is aluminum.
3. The hierarchical energy-absorbing bullet trap according to claim 1, wherein the deceleration body material is a rod H62-Y2, the deceleration body material is annealed, the elongation is not less than 40%, and the surface of the part is passivated.
4. The hierarchical energy-absorbing bomb catcher according to claim 1, wherein the damping body material is 40Cr, and the heat treatment hardness reaches HRC 28-32.
5. The energy-absorbing bomb catcher according to claim 1, wherein the firing pin material is 40Cr, and the heat treatment hardness is HRC 32-36.
6. A hierarchical energy absorber according to claim 1, wherein the shear body material is selected from 7a04-T6, and the parts are subjected to corrosion protection.
7. A hierarchical energy absorber according to claim 1, wherein said spacer material is selected from rods 6a02-T4, part chemical oxidation treatment.
8. A hierarchical energy absorbing bullet trap according to any of claims 1-7 wherein the bullet trap is capable of capturing bullets of steel core, soft steel core, pencil point bullet and rigid bullet flat bullet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930137.XU CN218937194U (en) | 2022-11-03 | 2022-11-03 | Hierarchical energy-absorbing bullet catcher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222930137.XU CN218937194U (en) | 2022-11-03 | 2022-11-03 | Hierarchical energy-absorbing bullet catcher |
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| Publication Number | Publication Date |
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| CN218937194U true CN218937194U (en) | 2023-04-28 |
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| CN202222930137.XU Active CN218937194U (en) | 2022-11-03 | 2022-11-03 | Hierarchical energy-absorbing bullet catcher |
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- 2022-11-03 CN CN202222930137.XU patent/CN218937194U/en active Active
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