CN109579642B - Integrated high overload air cannon impact shell - Google Patents
Integrated high overload air cannon impact shell Download PDFInfo
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- CN109579642B CN109579642B CN201811446574.6A CN201811446574A CN109579642B CN 109579642 B CN109579642 B CN 109579642B CN 201811446574 A CN201811446574 A CN 201811446574A CN 109579642 B CN109579642 B CN 109579642B
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- shell
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- cylindrical bullet
- impact
- air cannon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B35/00—Testing or checking of ammunition
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Vibration Dampers (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to an integrated high overload air cannon impact shell, which is characterized in that: the cylindrical bullet comprises a cylindrical bullet body, a cylindrical bullet body and a shell, wherein the cylindrical bullet body and the cylindrical bullet body are fixedly connected, the peripheries of the cylindrical bullet body and the cylindrical bullet body are coated with the shell, and an integral structure is formed. The beneficial effects are that: the invention adopts an integrated design, solves the problems of eccentricity, rotation, deformation, poor tightness and the like of the shell in a high-acceleration impact test, effectively improves the impact resistance of the air cannon shell, can carry out the air cannon impact test of over 20000g by adopting the 5 kg-class air cannon shell, can be repeatedly used for a plurality of times, basically avoids the condition of replacing the shell in the test process, saves the test cost, and can meet the high-order requirement.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to an integrated high overload air cannon impact shell.
Background
The air cannon test system is to use compressed air to replace high-pressure gas generated by gunpowder explosion to finish acceleration of the cannon, thereby realizing high-magnitude impact acceleration. In order to obtain performance parameters of rockets and missiles in higher-order impact mechanical environment tests, a high overload simulation test is generally carried out by adopting an air cannon test system.
At present, a lot of tests require that the magnitude of impact tests reach more than 15000g, and a lot of electronic components require 20000g. In view of the increasing magnitude of current air cannon impact tests, the cannon must bear tremendous energy during high overload impact. Conventional split shells have failed to withstand the impact forces on the shell itself during the test. The problems of eccentricity, rotation, deformation, poor tightness and the like easily occur in the high overload impact process, so that the shell cannot be automatically recovered after one impact, and the test efficiency is greatly reduced.
In order to meet the impact test requirement of more than 15000g, development of a novel impact shell with the advantages of rotation resistance, falling resistance, small resistance and vibration reduction is needed to be developed, so that the problem easily occurring in high-magnitude impact test is solved, the test cost increase caused by the problems of eccentricity, rotation, deformation, poor tightness and the like of the shell is overcome, and the purposes of improving the test efficiency and the test capability are achieved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides an integrated high overload air cannon impact cannon shell, and solves the problems that the cannon shell is easy to eccentric, rotate, deform, poor in tightness and the like during high acceleration impact test.
The invention aims to achieve the aim, and the integrated high overload air cannon impact cannon shell is characterized by comprising the following technical scheme: the cylindrical bullet comprises a cylindrical bullet body, a cylindrical bullet body and a shell, wherein the cylindrical bullet body and the cylindrical bullet body are fixedly connected, the peripheries of the cylindrical bullet body and the cylindrical bullet body are coated with the shell, and an integral structure is formed.
The cylindrical warhead is made of metal materials, and the upper surface of the end head of the cylindrical warhead is an arc-shaped surface.
The cylindrical elastomer is made of metal materials, the longitudinal axis of the cylindrical elastomer is I-shaped in cross section, a stepped anti-drop table is arranged at the upper end of the cylindrical elastomer, and a plurality of connecting holes are radially formed in the middle cylinder of the cylindrical elastomer.
The shell is made of PU polyurethane rubber, the columnar elastomer and the columnar part warhead are coated to form an integrated structure through die casting, and the PU polyurethane rubber is filled in the stepped anti-drop table and the connecting hole of the columnar elastomer.
The bottom of the shell is provided with a shock pad.
The beneficial effects are that: compared with the prior art, the invention adopts an integrated design, solves the problems of eccentricity, rotation, deformation, poor sealing performance and the like of the shell during a high-acceleration impact test, effectively improves the impact resistance of the air cannon shell, can perform the air cannon impact test of over 20000g by adopting 5kg class of air cannon shells, can be repeatedly used for a plurality of times, basically avoids the condition of replacing the shells during the test, saves the test cost, and can meet the high-order requirement.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic illustration of the invention in an air cannon impact test application.
In the figure: 1. the anti-drop device comprises a cylindrical bullet, an anti-drop platform, a cylindrical bullet, a connecting hole, a shell 5, a shock pad 6, an impact shell 7, a guide barrel 8, an air chamber 9 and an air gun base 10.
Detailed Description
The following detailed description of the embodiments according to the present invention is provided with reference to the preferred embodiments:
referring to fig. 1-2 in detail, the embodiment discloses an integrated high overload air cannon impact shell, which comprises a cylindrical warhead 1, a cylindrical shell body 3 and a shell body 5, wherein the cylindrical warhead and the cylindrical shell body are fixedly connected, and the peripheries of the cylindrical shell body and the cylindrical shell body are coated with the shell body to form an integrated integral structure. The bottom of the shell is provided with the shock pad 6, and the shock pad 6 on the rear end face of the shell can relieve the reverse impact effect on the shell body when the shell falls back, so that the service life of the shell is prolonged.
The preferred scheme of this embodiment is: the cylindrical warhead is made of metal materials, and the upper surface of the end head of the cylindrical warhead is an arc-shaped surface. The cylindrical warhead is an impact main body and is positioned at the front end of the shell, so that the air resistance during impact is reduced, and meanwhile, the contact area between the shell and the table top is small, so that a high-magnitude impact test is easy to realize.
The preferred scheme of this embodiment is: the cylindrical shell body is made of metal materials, the longitudinal axis section of the cylindrical shell body is I-shaped, the upper end of the cylindrical shell body is provided with a stepped anti-drop table 2, and a plurality of connecting holes 4 are radially formed in the middle cylinder of the cylindrical shell body, and the connecting holes are 3 in the embodiment.
The preferred scheme of this embodiment is: the shell is made of PU polyurethane rubber, the columnar elastomer and the columnar part warhead are coated to form an integrated structure through die casting, and the PU polyurethane rubber is filled in the stepped anti-drop table and the connecting hole of the columnar elastomer. The anti-drop table adopts a multi-step design, so that the cylindrical elastomer and the PU polyurethane rubber shell are prevented from being separated and dropped due to multiple impacts; the connecting holes prevent the cylindrical shell body and the PU polyurethane rubber shell from rotating mutually, so that the stability of the shell before and after impact is ensured; the shell adopts PU polyurethane rubber shell, can avoid the friction between cylindricality projectile body and the barrel inner chamber, can guarantee the leakproofness of shell and barrel inner chamber simultaneously. The anti-drop platform, the cylindrical elastomer and the PU polyurethane rubber shell are integrally cast, and the anti-drop platform has the characteristics of separation deformation prevention, rotation prevention and the like, and has the advantages of small resistance, friction prevention, good sealing performance, good damping effect and the like.
The shell of the air cannon can bear larger thrust (pressure intensity), realizes large-magnitude (more than 20000 g) high overload simulated impact test, does not need maintenance or replacement of the shell, can be repeatedly used for many times, and greatly improves test efficiency.
The self weight of the shell can be adjusted by adjusting the proportion of the cylindrical shell body and the PU polyurethane rubber shell, and the impact test of various magnitudes can be realized by adjusting the self weight, so that the self limitation is avoided.
Working process
As shown in fig. 3, firstly, the impact shell is arranged in the inner cavity of the gun barrel, the PU polyurethane rubber shell is in direct contact with the inner wall of the gun barrel, the tightness is kept, when the air gun impact test is carried out, the air chamber 9 is pressurized, the pressure gas is released, the cylindrical shell impact test table surface of the shell is enabled to obtain high-order acceleration, the anti-falling table prevents separation deformation, the connecting hole prevents rotation of the shell, then the shell is automatically recovered to the bottom of the gun barrel, the shock pad lightens reverse impact, and the air gun impact test can be carried out repeatedly.
The raw materials of the invention are commercially available.
The foregoing detailed description of the one-piece high overload air cannon impact projectile has been presented by way of example and not limitation, and several embodiments may be enumerated in accordance with the intended scope of the present invention, and therefore variations and modifications may be considered within the scope of the present invention.
Claims (2)
1. An integral high overload air cannon impact shell is characterized in that: the cylindrical bullet is fixedly connected with the cylindrical bullet, the periphery of the cylindrical bullet and the cylindrical portion of the cylindrical bullet are coated with the shell, the cylindrical bullet is made of metal materials, the upper surface of the end of the cylindrical bullet is an arc surface, the cylindrical bullet is made of metal materials, the longitudinal axis of the cylindrical bullet is I-shaped, the upper end of the cylindrical bullet is provided with a stepped anti-drop table, the middle cylinder of the cylindrical bullet is radially provided with a plurality of connecting holes, the shell is made of PU polyurethane rubber materials, the cylindrical bullet and the cylindrical portion of the cylindrical bullet are coated to form an integral structure through casting of a die, and the PU polyurethane rubber is filled in the stepped anti-drop table and the connecting holes of the cylindrical bullet.
2. The integrated high overload air cannon impact cannon of claim 1, wherein: the bottom of the shell is provided with a shock pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446574.6A CN109579642B (en) | 2018-11-29 | 2018-11-29 | Integrated high overload air cannon impact shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446574.6A CN109579642B (en) | 2018-11-29 | 2018-11-29 | Integrated high overload air cannon impact shell |
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| Publication Number | Publication Date |
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| CN109579642A CN109579642A (en) | 2019-04-05 |
| CN109579642B true CN109579642B (en) | 2023-09-22 |
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| CN201811446574.6A Active CN109579642B (en) | 2018-11-29 | 2018-11-29 | Integrated high overload air cannon impact shell |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649630A (en) * | 2020-05-25 | 2020-09-11 | 南京理工大学 | Bullet bottom construction with reduce and fall impact function |
| CN111458104B (en) * | 2020-05-27 | 2022-09-06 | 北京机械设备研究所 | Reusable ejection simulation load and manufacturing method thereof |
| CN116736026B (en) * | 2023-08-14 | 2023-10-10 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for constructing ultrahigh overload assessment environment by utilizing secondary light air cannon launching process |
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| CN1254828A (en) * | 1999-06-10 | 2000-05-31 | 谢蕴 | Grenade |
| KR20110126770A (en) * | 2010-05-18 | 2011-11-24 | 국방과학연구소 | The shock projectile for ballistic impact test and simulator of ballistic impact by it |
| CA2847654A1 (en) * | 2013-03-27 | 2014-09-27 | Kms Consulting Llc | System for measuring the yaw, spin and muzzle velocity of an ammunition projectile |
| CN105841559A (en) * | 2016-05-30 | 2016-08-10 | 中国工程物理研究院电子工程研究所 | Novel air cannon equivalent loading test device |
| CN205784908U (en) * | 2016-05-30 | 2016-12-07 | 中国工程物理研究院电子工程研究所 | A kind of air artillery equivalent loading test device for hanging |
| CN209588859U (en) * | 2018-11-29 | 2019-11-05 | 天津航天瑞莱科技有限公司 | Integral type high overload air bubble impacts shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7748325B2 (en) * | 2005-10-21 | 2010-07-06 | Liberty Ammunition, Llc | Firearms projectile |
| AU2013101363B4 (en) * | 2013-07-31 | 2014-03-13 | Techventure Investments Pty Ltd | A projectile body and corresponding ammunition round for small arms or a light firearm |
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- 2018-11-29 CN CN201811446574.6A patent/CN109579642B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712465A (en) * | 1986-08-28 | 1987-12-15 | The Boeing Company | Dual purpose gun barrel for spin stabilized or fin stabilized projectiles and gun launched rockets |
| CN1254828A (en) * | 1999-06-10 | 2000-05-31 | 谢蕴 | Grenade |
| KR20110126770A (en) * | 2010-05-18 | 2011-11-24 | 국방과학연구소 | The shock projectile for ballistic impact test and simulator of ballistic impact by it |
| CA2847654A1 (en) * | 2013-03-27 | 2014-09-27 | Kms Consulting Llc | System for measuring the yaw, spin and muzzle velocity of an ammunition projectile |
| CN105841559A (en) * | 2016-05-30 | 2016-08-10 | 中国工程物理研究院电子工程研究所 | Novel air cannon equivalent loading test device |
| CN205784908U (en) * | 2016-05-30 | 2016-12-07 | 中国工程物理研究院电子工程研究所 | A kind of air artillery equivalent loading test device for hanging |
| CN209588859U (en) * | 2018-11-29 | 2019-11-05 | 天津航天瑞莱科技有限公司 | Integral type high overload air bubble impacts shell |
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| CN109579642A (en) | 2019-04-05 |
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