JP4001595B2 - Backstop - Google Patents

Description

  The present invention relates to a backstop, and more particularly to a backstop that can be captured and recovered without pulverizing bullets.

  In a shooting range for shooting with live ammunition, in order to prevent the shooter from firing and removing the target or bullets penetrating the target, usually to capture the bullet behind the target Backstop is provided.

  As the backstop, conventionally, the slope of an inclined land has been used, or soil and sand have been raised to form a slope (for example, refer to Patent Documents 1 to 3, etc.). However, in such a backstop, the bullets dig into the slope or collide with the slope and are crushed. In this way, it is not always easy to collect all the bullets that are indented on the slope and the lead dust generated by crushing. If the bullets, their fragments, and dust are left uncollected, the lead dust is scattered from the bullets. As a result, so-called lead pollution occurs that pollutes the environment.

  Therefore, as a backstop that can capture the fired bullet without splashing, and can recover the bullet, its fragments, and dust, for example, a backstop constructed by packing a cushioning material between two plate-like members (See Patent Document 4), and a structure in which a bulletproof film is suspended inside a housing-like backstop composed of a frame or the like (see Patent Document 5).

In the backstop described in Patent Document 4, the shock absorbing material captures the bullet penetrating the plate-like member, and collects the bullet by separating the shock absorbing material and the bullet. Further, in the backstop described in Patent Document 5, the bulletproof film is composed of a speed reducing material for reducing the bullet speed and a plate material wound around a protective material for preventing the bullet from penetrating. Is supposed to be recovered.
JP 2000-154998 A JP 2000-189943 A JP 2004-20169 A JP 2003-53272 A JP 2002-139300 A

  However, for example, in the backstop described in Patent Document 4, it is not always easy to separate the cushioning material and the bullet, and there is a problem that the separation takes time and labor costs are increased.

  Further, in the backstop described in Patent Document 5, the bullet may collide with the plate material and be pulverized to generate lead dust. Furthermore, in the shooting training using a more powerful gun such as a rifle, there is a problem that the bullet penetrates not only the moderator, but also the plate material and a steel plate-made bullet protection plate arranged behind the plate material.

  Accordingly, an object of the present invention is to provide a backstop that can be easily captured without being crushed and can be easily recovered, and that can also be used for shooting training with a more powerful gun such as a rifle. Another object of the present invention is to provide a backstop capable of reducing running costs and a maintenance method thereof.

In order to solve the aforementioned problem, the backstop according to claim 1 is:
In a shooting range for shooting using live bullets, a backstop disposed behind the target as seen from the shooter,
A plurality of trap materials made of a flat fiber-containing hard rubber material arranged in parallel in the front-rear direction with respect to the gunner so as to face the gunner, or a trap material made of a hard rubber material containing fibers and a trap material made of a steel plate A plurality of trap materials composed of
A bullet collection device for collecting bullets provided below the plurality of trap members;
The trap material has a damage prevention material made of a synthetic material of plastic and rubber for preventing damage to the trap material on the surface facing the shooter, and the interval is used for shooting. It is arranged to be larger than the length of the bullet.

  According to the first aspect of the present invention, the fired bullet is made of a plurality of trap materials made of a fiber-containing hard rubber material that is a highly elastic material, a trap material made of a fiber-containing hard rubber material, and a trap material made of a steel plate. While trapping a plurality of trap materials, the kinetic energy is gradually taken away to be stalled and dropped and recovered by the lower bullet recovery device. In addition, the backstop is lined with a trapping material with an anti-breakage material made of a composite of plastic and rubber on the surface facing the gunner. For example, a trap adjacent to a bullet used for shooting When inserted in the gap between the bullets, the gap between the bullets and the trapping material is arranged so that the gap between the bullets is 1 mm before and after the bullets, and the gap between the traps is 2 mm or more larger than the length of the bullets.

  According to a second aspect of the present invention, in the backstop according to the first aspect, the plurality of trap materials are arranged in the front-rear direction and the lateral direction with respect to the shooter and are viewed from the shooter. The seams between the trap materials adjacent in the lateral direction are arranged so as not to be aligned in the front-rear direction, and arranged behind the plurality of trap materials in parallel with the plurality of trap materials. A steel plate is provided.

  According to the second aspect of the present invention, when the backstops are arranged in the horizontal direction when viewed from the gunner, the seams of the trap materials adjacent in the horizontal direction are not arranged in a straight line. The trap material body will be present. In addition, a steel plate is provided behind the plurality of backstop trap materials in parallel to the trap materials.

  According to the first aspect of the present invention, the bullet that has been fired is penetrated through a trap material made of a hard rubber material containing fibers, which is a highly elastic material, so that the bullet is strongly braked without damaging the bullet. By trapping multiple trap materials, it effectively captures the bullet's kinetic energy, stalls the bullet, drops it, and collects it with the bullet collection device below, effectively capturing the bullet without breaking it can do. Therefore, there is no generation of lead dust due to the pulverization of bullets, and it is possible to reliably prevent generation of lead pollution. Also, if you use multiple trap materials consisting of a trap material made of hard rubber material containing fiber and a trap material made of steel plate, even if you use a more powerful gun such as a rifle, you can crush bullets In order to efficiently take away the kinetic energy, the same effect as described above can be exhibited.

  Further, in the backstop according to claim 1, since the trap material is disposed so that the interval between the trap materials is larger than the length of the bullet, the bullet that has lost the kinetic energy almost automatically falls to the bullet collection device below. Even if the bullet is caught in the trap material, it can be easily recovered by knocking it down with a stick, etc., so that the bullet can be collected very easily, and extra labor costs are spent on collecting the bullet. Or can be reduced.

  Furthermore, since the backstop according to claim 1 only suspends a plurality of trap materials, the installation space is small compared to the conventional case where soil and sand are raised and formed into a slope. That's it.

  In addition, since the anti-breakage material made of a composite material of plastic and rubber is affixed to the surface of the backstop trapping material facing the gunner, there are holes created by the bullet penetration in the anti-breakage material. It can have the property of being reduced, and can effectively protect the surface of the trap material that is easily damaged by penetrating bullets and prevent damage. Further, the durability of the trap material is increased, and the trap material can withstand penetration of more bullets, so that the running cost can be reduced.

  According to the second aspect of the present invention, when the backstops are arranged in the horizontal direction when viewed from the gunner, the seams of the trap materials adjacent in the horizontal direction are not arranged in a straight line. Since the main body of the trap material comes to be present, it always lands on the trap material 2 at the rear even if the bullet penetrates or passes through the joint portion. Therefore, it is possible to avoid a situation in which the bullets pass through the joint portions aligned in a straight line and jump out to the rear of the backstop, and the kinetic energy of the bullets penetrating is taken and captured. The effect can be surely exhibited.

  Further, since the steel plate is provided in parallel to the trap material behind the plurality of trap materials of the backstop, in addition to the effect of the invention according to claim 1, the bullet should penetrate all of the plurality of trap materials. Even if it has been done, it becomes possible to finally prevent bullet penetration with this steel plate.

  Hereinafter, embodiments of the backstop and the maintenance method thereof according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic perspective view showing a configuration of a backstop according to the present embodiment, and FIG. 2 is a side view showing a state in which the backstop of FIG. 1 is arranged in a shooting range. In the installation example shown in FIG. 2, a bullet pier B for protecting the target support portion below the target T from landing is provided on the shooter A side of the target T. Further, the target 2 is a fixed type fixed to the floor in FIG. 2 or the like, but in addition to this, for example, the target 2 moves in the front-rear direction with respect to the shooter A, or the shooter A The function of the backstop 1 of the present embodiment is effectively exhibited even for a target that moves in front of the backstop 1 in the lateral direction.

  The backstop 1 is disposed behind the target T as viewed from the shooter A. In this embodiment, the flat trap material 2, the steel plate 3, and the bullet collection device 4 for collecting bullets are provided. It has.

  The trap material 2 is juxtaposed in the front-rear direction with respect to the gunner A so as to face the gunner A, and in this embodiment, ten trap materials 2 are juxtaposed. In this embodiment, as shown in FIG. 2, the trap material 2 is attached by bolting the upper end portion of the trap material 2 to the lower part of the iron plate fixed to the ceiling of the training field.

  In that case, it is preferable to arrange | position so that the space | interval of the adjacent trap material 2 may become larger than the length of the bullet used for shooting. For example, when a bullet used for shooting is inserted into the gap between adjacent trap materials 2, the distance between the trap materials 2 is the length of the bullet so that the distance between the bullet and the trap material 2 is 1 mm before and after the bullet. It arrange | positions so that it may become 2 mm or more than this. As a method for attaching the trap material 2, the trap material 2 may be attached to the ceiling via an iron plate as shown in FIG. 2, but other methods such as fixing a hook to the ceiling may be used. It is also possible to attach the upper end portion of the trap member 2 to the hook so as to hang it.

  FIG. 3 is a cross-sectional view of the trap material according to the present embodiment. The trap material 2 is preferably formed from a highly elastic material. In this embodiment, the trap material 2 is formed of a fiber-containing hard rubber material that is a highly elastic material, and includes a fiber in which four layers of coarsely woven vinyl or polyamide fibers 5 are sandwiched between hard rubbers. Hard rubber material is used.

  Moreover, in this embodiment, the damage prevention material 6 for preventing the damage of the trap material 2 by penetration of a bullet is affixed on the surface facing the gunner of the trap material 2. The breakage prevention material 6 is made of a material obtained by synthesizing a pasted plastic and rubber, and has a property that a hole generated by the penetration is reduced when the bullet penetrates. Whether or not the damage preventing material 6 is stuck to the trap material 2 is determined by the gun or bullet used.

  As shown in FIGS. 1 and 2, a flat steel plate 3 is disposed in parallel to the trap material 2 on the rear side when viewed from the shooting hand of the plurality of trap materials 2. This steel plate 3 is installed in order to prevent the bullet from penetrating in the event that the bullet has penetrated all of the plurality of trap materials 2, and in this embodiment, the thickness is A steel plate of about 4 to 6 mm is used.

  A bullet collection device 4 for collecting bullets is disposed below the plurality of trap members 2. In the present embodiment, a box-type bullet collection device 4 having an open top is adopted as the bullet collection device 4. However, in addition to this, for example, a bullet that has fallen like a belt conveyor is received. It is also possible to use an apparatus that automatically conveys and collects.

  Next, the operation of the backstop 1 according to this embodiment will be described.

  When the shooter A fires a bullet toward the target T and the bullet deviates from the target T and collides with the trap material 2 of the backstop 1, the bullet penetrates the trap material 2. However, at that time, the trap material 2 exerts a force on the bullet in the direction of inhibiting its progress. As described above, if the trap material 2 is formed using a highly elastic material, in particular, a hard rubber material containing fibers, even if the bullet collides, there is not enough hardness to damage the bullet. Moreover, you can apply a strong brake to the bullet.

  Then, as shown in FIG. 4, each time the bullet S penetrates the trap material 2, its kinetic energy is taken away by the trap material 2, and finally it cannot penetrate even if it collides with the trap material 2. Then, it falls downward and is recovered by the bullet recovery device 4. In the meantime, in any trap material 2, the bullet S is not damaged as described above, so that the bullet S can be recovered by the bullet recovery device 4 without being damaged.

  According to the experiments by the present inventors, when a hard rubber material with a fiber having a thickness of 8 to 10 mm is used as the trap material 2, if the bullet S is a 9 mm parabellum bullet, 5 to 6 layers of the trap material 2 are penetrated. At this point, the bullet S can be stopped and dropped and recovered. Therefore, if the backstop 1 is configured by using 10 trap materials 2 as in the present embodiment, the bullet S hits the trap material 2 before reaching the steel plate 3 disposed behind the trap material 2 and stops. Collected. Thus, since the backstop 1 of the present invention stops and captures the bullet S while passing through the plurality of trap materials 2, when the bullet S reaches the steel plate 3, the trap material 2 is used. Measures are taken such as increasing the number of traps 2, changing the arrangement of the trap materials 2, or replacing the trap materials 2 with new ones.

  As described above, if the intervals between the adjacent trap members 2 are arranged so as to be larger than the length of the bullets S, the bullets S can be smoothly dropped in the gaps between the trap members 2. In addition, a small part of the bullet S may stop in a state of being caught in the trap material 2, but in this case, if a rod-shaped object is inserted into the gap and knocked down, it is easily recovered by the bullet recovery device 4. .

  As described above, the breakage prevention material 6 is stuck to prevent the trap material 2 from being broken by the penetration of the bullet S. Since the bullet S fired from the gun is given strong rotation around its bullet axis, as shown in FIG. 5, the surface portion on the incident side is damaged when penetrating the trap material 2. There is. However, if the breakage prevention material 6 is pasted, it is possible to prevent the broken trap material 2 from being scattered due to the property that the hole generated by the penetration is reduced.

  Here, the maintenance method of the backstop 1 of this embodiment is described. As described above, the backstop 1 of the present embodiment takes kinetic energy from the bullet S every time the bullet S penetrates the trap material 2, and stalls and recovers the bullet S. Therefore, for example, among the 10 trap members 2 provided as in the present embodiment, the trap material 2 on the side close to the shooter has a large penetration amount of the bullet S, and the durability of the trap member 2 is weakened. However, the trap material 2 on the side farther from the shooter has little or no penetration of the bullet S, and the durability is maintained.

  Therefore, the trap material 2 on the side close to the shooter through which many bullets S have passed is removed, and the trap material 2 having a small amount of bullet penetration behind it is moved to the side close to the shooter, and the necessary number of new traps behind it. The material 2 may be replenished and drooped. In this way, in this embodiment, a set of 10 trap materials 2 is replaced with a new trap material 2 so that no bullet S has penetrated at all, or almost all bullets S have penetrated. Therefore, it is possible to prevent the trap material 2 that can withstand use from being wasted and discarded, and the trap material 2 can be used efficiently, thereby reducing the running cost.

The trap material 2 of this embodiment can withstand about 8000 shots / penetration per 1 m ^{2 of} trap material when a 9 mm parabellum bullet is used as the bullet S and the landing sites of the bullet S are appropriately dispersed. The necessity of the replacement is confirmed by visual confirmation. It is also possible to decide whether or not to replace based on the type of gun and bullet used and the number of bullets used.

  Thus, according to the backstop 1 of the present embodiment, the fired bullet S is stalled by gradually taking away its kinetic energy while penetrating the plurality of trap materials 2, and dropped to recover the lower bullet. Since it is collected by the device 4, the bullet S can be captured efficiently without being crushed. Therefore, there is no generation of lead dust due to bullet pulverization, and it is possible to reliably prevent the occurrence of lead pollution.

  Further, in the backstop 1 of the present embodiment, the bullet S that has lost its kinetic energy almost automatically falls to the bullet collection device 4 below and is collected, so that the bullet S can be collected very easily. It is possible to reduce or eliminate the extra labor cost for collecting bullets.

  Furthermore, as shown in FIG. 1 and FIG. 2, the backstop 1 basically only suspends a plurality of trap materials 2, so that soil and sand are raised and formed into a sloped surface as in the prior art. The installation space is very small compared to the case.

  In addition, when using a more powerful gun such as a rifle, it is preferable to use a trap material made of a steel plate as the trap material 2 in addition to the trap material made of a highly elastic material as described above. Specifically, for example, as shown in FIG. 6, the trap portion of the backstop 1 is made of a trap material 21 made of the fiber-containing hard rubber material having a thickness of about 9 mm and a trap made of a steel plate having a thickness of about 3 to 4 mm. The material 22 and the material 22 are arranged in parallel.

  If constituted in this way, as in the case of using the handgun, the kinetic energy of the bullet fired from the rifle while passing through the trap material 21 made of a hard rubber material containing fibers and the trap material 22 made of a steel plate. Can be taken away and bullets can be stalled and captured and recovered. Moreover, even if a bullet penetrates the trap material 22 made of a steel plate, if the thickness of the trap material 22 is about 3 to 4 mm, the bullet is stalled without being deformed or crushed. Can be avoided.

  When the bullet reaches the rear steel plate 3, measures such as increasing the number of trap materials 2, changing the arrangement of the trap materials 2, or replacing the trap materials 2 with each other are taken as described in the above embodiment. It is the same as the case of.

  Further, in an actual shooting range, there are cases where a plurality of targets T shown in FIG. 1 and FIG. 2 are arranged side by side in the horizontal direction as viewed from the gunner A, or a relatively wide range is moved in the horizontal direction. is there. In such a case, a plurality of backstops 1 of the present embodiment can be used side by side. At that time, the seam of the trap material 2 adjacent in the lateral direction may be fixed with a pin or the like.

  Further, in the above-described case, the backstops 1 can be simply arranged in the horizontal direction as described above. However, as schematically shown in FIG. 7, the seams between the trap materials adjacent in the horizontal direction are formed in the front-rear direction. It is preferable that they are arranged so as not to be aligned. If the seams are aligned in the front-rear direction, there is a possibility that the fired bullets penetrate or pass through the seam portion. Usually, the seam portion is weaker than the trap material itself in preventing the bullet from penetrating and taking away its kinetic energy, so that the bullet easily collides with the steel plate 3 at the rear end and deforms or penetrates through the steel plate 3. A situation may occur in which the concrete wall C (see FIG. 2) on the rear side collides and is crushed.

  However, as shown in FIG. 7, if the trap material 2 is arranged so that the seams of the trap material 2 are not aligned in the front-rear direction, the trap material 2 body is always located behind the seam of the trap material 2 adjacent in the lateral direction. Therefore, even if the bullet S penetrates or passes through the joint portion, it always lands on the trap material 2 at the rear. Therefore, it is possible to avoid the situation as described above, and it is possible to effectively exhibit the effect of the present embodiment in which the kinetic energy of the projecting bullet is taken away.

  In the above embodiment, the case where the backstop 1 is used in an indoor shooting range as shown in FIG. 2 has been described. However, even in an outdoor shooting range, for example, the trap material 2 of the backstop 1 from the support plate, etc. It is also possible to use it by hanging it.

It is a schematic perspective view which shows the structure of the backstop which concerns on this embodiment. It is a side view which shows the state which has arrange | positioned the backstop of FIG. 1 in the shooting range. It is sectional drawing of the trap material which concerns on this embodiment. It is a schematic diagram explaining the function of the trap material which concerns on this embodiment. It is a mimetic diagram explaining the state where a trap material is damaged by a bullet. It is a side view which shows the structural example of the trap material for rifles. It is a schematic diagram which shows the backstop arrange | positioned so that the joint line of a trap material may not line up in a straight line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Backstop 2 Trap material 21 Trap material consisting of hard rubber material containing fiber 22 Trap material consisting of steel plate 3 Steel plate 4 Bullet collection device 6 Damage prevention material A Shooter S Bullet T Target

Claims (2)

In a shooting range for shooting using live bullets, a backstop disposed behind the target as seen from the shooter,
A plurality of trap materials made of a flat fiber-containing hard rubber material arranged in parallel in the front-rear direction with respect to the gunner so as to face the gunner, or a trap material made of a hard rubber material containing fibers and a trap material made of a steel plate A plurality of trap materials composed of
A bullet collection device for collecting bullets provided below the plurality of trap members;
The trap material has a damage prevention material made of a synthetic material of plastic and rubber for preventing damage to the trap material on the surface facing the shooter, and the interval is used for shooting. The backstop is arranged to be larger than the length of the bullet.   The plurality of trap materials are arranged in the front-rear direction and the lateral direction with respect to the shooter, and when viewed from the shooter, the seams between the trap materials adjacent in the lateral direction are not aligned in the front-rear direction. 2. The backstop according to claim 1, further comprising a steel plate disposed behind the plurality of trap members and disposed in parallel with the plurality of trap members.

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