CN111238296A

CN111238296A - Light gas big gun mechanical hulling device

Info

Publication number: CN111238296A
Application number: CN202010097717.8A
Authority: CN
Inventors: 符云帆; 周刚; 王长利; 骆奎; 苏书艺; 蒋立群; 朱灿伟
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-06-05

Abstract

The invention relates to a light gas gun mechanical shelling device, aiming at solving the problem of unsatisfactory shelling and meeting the shelling requirements of shells with different diameters. The invention consists of a connecting section, a bullet holder recovery cabin and a detachable shelling section. The linkage segment constitutes a whole with retrieving the cabin, retrieves the cabin and passes through the screw and links to each other with the shelling section, and the shelling section can be dismantled and change the use, satisfies the projectile body shelling demand of different bullet footpaths, retrieves the cabin and has the speed reduction board. The separation of the projectile body and the projectile support is completed through the mechanical hulling device on the premise of not influencing the kinetic energy of the projectile body.

Description

Light gas big gun mechanical hulling device

Technical Field

The invention belongs to the field of explosion and impact dynamics, and relates to a light gas gun mechanical shelling device.

Background

The second-level light gas gun is a universal launching device, has wide application range on the material, shape and quality of a projectile body, and is widely applied to the experimental research of the problems of high speed and ultrahigh speed. When the metal projectile body is launched in the test, a plastic projectile support capable of wrapping the projectile body is required to be manufactured for the reason of protecting the bore of the launching tube, the outer diameter of the projectile support is consistent with the inner diameter of the launching tube, and the projectile body carried by the projectile support is shot to a target body at a high speed. In a light cannon high-speed/ultrahigh-speed collision test, the sabot can influence the pit opening effect of the target body. In order to avoid the interference of the projectile holder on the test, the projectile body needs to be separated by the projectile holder. The currently common shelling methods are mainly classified into pneumatic shelling and mechanical shelling. The pneumatic shelling makes the bullet support separated from the bullet body by the combined action of the shock wave at the outlet of the launching tube and the surrounding flow field in high-speed flight through designing the geometric shape of the bullet support. Compared with pneumatic shelling, mechanical shelling is directly and mechanically acted with the bullet holder through an external sheller, separation of the bullet holder and the bullet body is achieved, and speed of the bullet body cannot be lost in the process.

As seen from the results of the final adjustment in literature, the mechanical shelling all has a small amount of elastic support to follow up the experimental results; for the monomers with different elastic single diameters, the shelling range cannot be adjusted, and shelling devices with different sizes need to be processed; meanwhile, the current huller can generate bending deformation after being used repeatedly, and cannot be used repeatedly, so that the cost is increased.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the light-gas gun mechanical hulling device which is detachable, is suitable for replacing suitable hullers for shells with different diameters, ensures the hulling effect and can effectively isolate sabot fragments after the shells are separated from the sabots.

The invention discloses a light gas gun mechanical shelling device, which comprises a connecting section coaxially arranged at the outer side of the outlet end of a gun barrel, wherein the inner diameter of the connecting section is larger than the outer diameter of a sabot, a recovery cabin is fixed on the inner wall of the outlet end of the connecting section, the recovery cabin is annular and is coaxially arranged with the inner cavity of the connecting section, an opening is formed in the recovery cabin facing the inlet direction of the connecting section, a shelling section is fixed on one side of the opening of the recovery cabin, the outer wall of the shelling section is an inclined plane for conveniently guiding sabot fragments into the recovery cabin, a through hole for ejecting a projectile body is formed in the middle of the shelling section, and a retaining ring with the inner diameter smaller than the outer diameter of the sabot and larger than the outer diameter of the projectile body is formed on the end face of the shelling section facing the inlet direction of the connecting section. The internal diameter of linkage segment and the external diameter that is greater than the bullet and holds in the palm, consequently, be greater than the internal diameter of gun barrel to guarantee that the projectile body holds in the palm the accurate shelling device that gets into with the bullet, block the bullet support through the shelling section, the bullet support after the breakage continues to fly forward along the inclined plane of shelling section and takes place the collision with retrieving the cabin, retrieve through retrieving the cabin, make like this in case the bullet holds in the palm and the projectile body separation, the bullet holds in the palm and is in the isolated state with the projectile body, guarantees that the bullet of separation holds in the palm can not influence the flight orbit and the speed of projectile body.

In this embodiment, the shelling section is in the shape of a truncated cone.

In this embodiment, the diameter of the shelling section at one end of the retainer ring is smaller, the other end of the shelling section is annularly arrayed with a plurality of screw holes by taking the central shaft as a center, the end part of the inner annular wall of the recovery cabin is provided with a threaded hole corresponding to the screw hole, and the shelling section is fixed on the recovery cabin through a screw which penetrates through the screw hole and is screwed in the threaded hole. When the shelling section is damaged or different models need to be changed according to the projectile body, the shelling section is convenient to change, and the using cost is low.

In this embodiment, the other end of the shelling section is annularly arrayed with twelve screw holes centering on the central axis.

In the embodiment, an annular speed reduction plate and a plurality of layers of damping films are sequentially distributed on the opening of the recovery cabin from outside to inside.

In this embodiment, the material of the shelling section is brass. The brass material has high strength and high hardness, and can effectively separate the cartridge holder with relatively low density.

In this embodiment, the laser speed measuring device for measuring the flying speed of the projectile body is installed on the inner wall of the connecting section, and the laser speed measuring device is radially arranged and the detection end of the laser speed measuring device faces the central axis of the connecting section. The laser speed measuring device is adopted, so that the speed of the projectile support and the projectile body coming out from the gun barrel outlet can be directly measured.

In the embodiment, the connecting section is in threaded connection with the gun barrel, so that the connecting section and the gun barrel can be conveniently detached.

In the embodiment, the inner diameter of the shelling section baffle ring is 4cm or 10cm or 18cm, and the wall thickness of the connecting section is 12 cm.

Due to the adoption of the structure, the embodiment has the following advantages:

1. the fragment of bullet support can effectively be isolated after the bullet body separates with the bullet support, does not receive the influence of bullet support fragment when making the bullet body strike the target.

2. The shelling section is made of brass materials, so that the structural strength is guaranteed, and the utilization efficiency is improved.

3. The shelling section of this device can be dismantled alone to adapt to different bullet footpath size bodies, make the cone angle reach suitable shelling position, guarantee the shelling effect.

Drawings

FIG. 1 is a perspective cross-sectional view of an embodiment of the invention.

FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention.

In the attached drawing, 1-gun barrel, 2-connecting section, 3-bullet holder, 4-bullet body, 5-recovery cabin, 6-shelling section, 7-speed reducing plate, 8-through hole, 9-laser speed measuring device and 10-screw hole.

Detailed description of the preferred embodiments

The following further describes embodiments of the present invention with reference to the drawings.

Example 1:

as shown in fig. 1 and 2, the light gas gun mechanical hulling device comprises a connecting section 2, a hulling section 6 and a recovery cabin 5, wherein the connecting section 2 of the device can be connected with a gun barrel in a threaded mode or fixed on an external support through a separate fixing device, so that two separate systems are formed with a target plate. The inner diameter of the connecting section 2 is larger than the outer diameter of the gun barrel, so that a laser speed measuring device 9 is arranged in the connecting section 2 in a space. In this embodiment, the connecting section 2 is a cylinder, and the inner diameter of the cylinder is larger than the level of the gun, so that the projectile holder and the projectile body can smoothly pass through the cylinder during flying. In order to ensure the strength, the wall thickness of the connecting section is 12 cm. The shelling section 6 is connected with the connecting section 2 through a recovery cabin 5; the recycling bin 5 is connected with the connecting section 2 at one end and with the hulling section 6 at the other end by 12 screws. The recovery cabin 5 and the connecting section 2 are of an integral structure. The shelling section 6 is a round table with a hollow middle part, a baffle ring with the inner diameter smaller than the outer diameter of the bullet holder 3 and larger than the outer diameter of the bullet body 4 is formed on the end face of the shelling section 6 facing the inlet direction of the connecting section 2, the inner diameter of the baffle ring has three specifications of 4cm, 10cm and 18cm, and shelling treatment of bullet bodies with different bullet diameters can be met. When the bullet support 3 drives the bullet body 4 to fly to the shelling section 6, the bullet support 3 collides with the retaining ring of the shelling section 6, the contact surface of the bullet support 3 and the annular retaining ring is a platform, the stress area is increased, the shelling section 6 transmits impact force to the connecting section 2, and the shelling section adopts brass for ensuring strength. Retrieve the cabin 5 for the annular and with 2 coaxial settings of inner chamber of linkage segment, retrieve the cabin 5 and be equipped with the opening towards 2 import directions of linkage segment, the outer wall of shelling section 6 is for making things convenient for the leading-in inclined plane of retrieving cabin 5 of 3 fragments of support of bullet, guarantees like this that 3 collision shelling sections 6 of support of bullet get rid of the body after, and the fragment that the bullet held in the palm 3 gets into retrieves cabin 5, and the projectile jets out through 6 middle part through-holes 8 of shelling section to realize the separation of bullet support and projectile, influence projectile flight trajectory when preventing the bullet support and retrieving. The recovery cabin 5 is internally provided with a speed reducing plate 7 and an annular shock absorption sheet, when the bullet support 3 flies to the recovery cabin 5, the speed reducing effect is achieved under the shock absorption effect of the speed reducing plate 7 and the annular shock absorption sheet in the recovery cabin 5. The laser speed measuring device is arranged at the front section of the connecting section, so that the speed of the projectile body can be directly measured.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a light gas big gun machinery hulling device which characterized in that: comprises a connecting section (2) coaxially arranged at the outer side of the outlet end of a gun barrel (1), the inner diameter of the connecting section (2) is larger than the outer diameter of a bullet holder (3), a recovery cabin (5) is fixed on the inner wall of the outlet end of the connecting section (2), the recovery cabin (5) is annular and is coaxial with the inner cavity of the connecting section (2), the recycling bin (5) is provided with an opening facing the inlet direction of the connecting section (2), a shelling section (6) is fixed on one side of the opening of the recovery cabin (5), the outer wall of the shelling section (6) is an inclined plane which is convenient for guiding fragments of the bullet holder (3) into the recovery cabin (5), the middle part of the shell removing section (6) is provided with a through hole (8) for the ejection of the elastomer (4), the end face of the shelling section (6) facing the inlet direction of the connecting section (2) forms a retaining ring with the inner diameter smaller than the outer diameter of the bullet holder (3) and larger than the outer diameter of the bullet body (4).

2. The light gas gun mechanical shelling device of claim 1 wherein: the shelling section (6) is in a circular truncated cone shape.

3. The light gas gun mechanical shelling device of claim 2 wherein: the diameter of the shelling section (6) at one end of the baffle ring is smaller, the other end of the shelling section (6) is annularly arrayed with a central shaft as a center and is provided with a plurality of screw holes (10), the end part of the inner annular wall of the recovery cabin (5) is provided with a threaded hole corresponding to the screw hole (10), and the shelling section (6) is fixed on the recovery cabin (5) through a screw which penetrates through the screw hole (10) and is screwed in the threaded hole.

4. The light gas gun mechanical shelling device of claim 3 wherein: the other end of the shelling section (6) is annularly arrayed with twelve screw holes (8) by taking a central shaft as a center.

5. The light gas gun mechanical shelling device of claim 1 wherein: annular speed reduction plates (7) and multiple layers of damping films are sequentially distributed on the opening of the recovery cabin (5) from outside to inside.

6. The light gas gun mechanical shelling device of claim 1 wherein: the material of the shelling section (6) is brass.

7. The light gas gun mechanical shelling device of claim 1 wherein: the laser speed measuring device (9) for measuring the flying speed of the projectile body (4) is installed on the inner wall of the connecting section (2), the laser speed measuring device (9) is arranged along the radial direction, and the detection end face of the laser speed measuring device faces to the central axis of the connecting section (2).

8. The light gas cannon mechanical shelling apparatus as claimed in any one of claims 1 to 7, wherein: the connecting section (2) is in threaded connection with the gun barrel (1).

9. The light gas gun mechanical shelling device of claim 8 wherein: the inner diameter of the retaining ring of the shelling section is 4cm or 10cm or 18 cm.

10. The light gas gun mechanical shelling device of claim 8 wherein: the wall thickness of the connecting section is 12 cm.