Ricochet prevention apparatus for a live-fire shooting range and a shooting facility including the same

Abstract

The present invention relates to a ricochet prevention device for a live-fire shooting range and a live-fire shooting facility including the same, which can effectively prevent accidents involving casualties caused by ricochets by providing an optimized ricochet prevention structure for surrounding structures, including a target area, installed in a shooting range where live-fire shooting takes place, and improve economic efficiency by suppressing damage to the components of the shooting range and reducing maintenance costs. According to the present invention, a ricochet prevention device for a live-fire shooting range is provided, characterized by comprising: a target area-side ricochet prevention unit configured to be provided at the upper part of the target area to prevent the occurrence of ricochets from the upper part of the target area; a ceiling-side ricochet prevention unit configured to be provided at the ceiling of the shooting range in front of the target area to prevent the occurrence of ricochets from the ceiling; a side wall-side ricochet prevention unit configured to be provided at the side wall of the shooting range in front of the target area to prevent the occurrence of ricochets from the side wall; and a structure-side ricochet prevention unit configured to be provided on one side of the shooting range structure to prevent the occurrence of ricochets from the structure.

Description

Technology Field

[0001] The present invention relates to a ricochet prevention device for a live ammunition shooting range and a live ammunition shooting facility including the same. More specifically, the invention relates to a ricochet prevention device for a live ammunition shooting range and a live ammunition shooting facility including the same, which can effectively prevent accidents involving casualties caused by ricochets by providing an optimized ricochet prevention structure for surrounding structures including a target area installed in a shooting range where live ammunition is fired, improve economic efficiency by reducing maintenance costs by suppressing damage to the components of the shooting range, and further improve the safety of the shooting range environment by efficiently ventilating heavy metal fumes and dust, such as lead components, generated during the process of bullet breakage. Background Technology

[0003] In general, military units and police forces handling firearms have been consistently conducting shooting training for these personal firearms to develop the shooting skills necessary in emergencies and to maintain combat capabilities.

[0004] Shooting training using these personal firearms is mainly conducted at indoor shooting ranges or outdoor zeroing ranges, live-fire ranges, and combat shooting training grounds.

[0005] Figure 1 is a photograph showing the shapes of bullet heads and ricochets, Figure 2 is a drawing showing the damage to each structure of a live-fire shooter due to actual ricochets at an indoor live-fire shooting range, and Figure 3 is a photograph showing internal impact marks and internal and external penetration views due to ricochets.

[0006] When firing live ammunition, unexpected ricochets (referring to a bullet that deviates from its original trajectory after hitting an obstacle while in flight; also called a ricochet) may occur.

[0007] The ricochet phenomenon refers to a situation where a bullet does not shatter and scatter upon hitting an object, but rather bounces off while maintaining its shape and velocity to some extent. According to the law of action and reaction, an object struck by a bullet bounces off the bullet and exerts a repulsive force, changing the bullet's direction of motion and causing the ricochet phenomenon. This can result in serious injuries to the shooter or bystanders, and can even threaten their lives.

[0008] In other words, ricochets that occur during shooting training are a phenomenon in which a fired bullet, after colliding with a target or surrounding structure, does not penetrate or stop but bounces off the surface while maintaining its kinetic energy; the decisive factor in a bullet turning into a ricochet is the critical angle. When a bullet is incident on a collision surface at an angle lower than the critical angle, the surface's resistance acts more strongly than the normal drag, causing the bullet's trajectory to deflect, and the bullet in the second flight phase flies in a direction unrelated to the initial line of sight, striking an unintended target.

[0009] In particular, the problem of ricochets in indoor shooting ranges is much more serious than in outdoor shooting ranges. In indoor spaces, rigid structures such as impact zones, ceilings, and side walls are densely packed in close proximity, allowing bullets to repeatedly reflect off the target before reaching the shooter. It has been reported that in conventional impact zones using only bulletproof steel plates, heavy metal fumes or dust generated from bullet breakage release lead into the air at levels 62 times higher than the occupational environment standard, and lead at levels 1.6 times higher than the human body standard is detected in the blood of shooting range managers.

[0010] The main routes of ricochets in indoor shooting ranges can be categorized as follows.

[0011] First, it is a ricochet through the upper opening of the impact area. After impacting the inclined surface, the bullet deflects upward and escapes into the forward space through the ceiling opening of the impact area, and this bullet re-impacts the surface of the firing system, such as the ceiling structure or the bullet recovery device, to generate a secondary ricochet.

[0012] Second is ricochet towards the shooter from horizontal protrusions of the bulletproof steel plate. This is a phenomenon where a bullet strikes a horizontal protrusion of the impact site structure and reflects back toward the shooter; this phenomenon occurs repeatedly at the junction boundary between the upper part of the slope and the horizontal plane, even if the slope is located below the horizontal plane.

[0013] Third, secondary ricochet caused by structures within a zone approximately 10m in front of the impact site. After the initial impact at the impact site, the deflected bullet strikes the surfaces of structures in the forward zone, such as the floor, side walls, bullet recovery devices, and CCTV mounts, causing additional ricochet.

[0014] The 5.56×45mm round (KM193: bullet weight 3.56g, m / s velocity 964m / s; K100 NATO: bullet weight 3.95~5.18g, m / s velocity 914m / s), the main ammunition of the K2 rifle, exhibits severe bullet tumbling as it rapidly loses ballistic straightness immediately after impact with a target due to the high-speed flight characteristics of the lightweight bullet. This tumbling phenomenon causes the bullet to collide with the rubber plate of the target sheet at an abnormal angle immediately after passing through the target sheet, irregularly damaging the rubber plate and structurally intensifying the generation of ricochets. In particular, plastic target sheets of 5T or thicker, or compressed paper target sheets of 7T thickness, accelerate this tumbling phenomenon as their hardness increases, leading to more severe damage to the rubber plate and causing additional environmental pollution and fire hazards caused by microplastics and paper dust.

[0015] More specifically, conventional impact area technology related to ricochets has the following structural and functional limitations.

[0016] First, there is the external escape of ricochets due to the open top of the impact area. Conventional impact areas have a structure with an open top, so when a bullet deflects upward after colliding with an inclined surface, it escapes into the forward space through the ceiling area. The escaped bullet can cause a secondary ricochet accident by colliding again with ceiling structures or firing system accessories and reaching the shooter.

[0017] In addition, there is the issue of repeated ricochet at the horizontal protrusions of the bulletproof plate. Structurally, the phenomenon of bullets reflecting back toward the shooter can occur repeatedly at the joint boundary (horizontal protrusion) between the top of the bulletproof plate and the horizontal structure. As long as the joint between the inclined surface and the horizontal surface exists, there is a limitation in that this risk cannot be eliminated by the bulletproof plate structure alone.

[0018] In addition, the secondary impact surface in the 10m area in front of the impact point is left unattended. Since there are no separate barriers on the floor and side wall structures within approximately 10m in front of the impact point, the secondary impact surface of ricochets from the impact point is left unattended.

[0019] In addition, there is the issue of lead dust and splatter resulting from the exclusive use of bulletproof steel plates. A bullet impact zone composed solely of bulletproof steel plates scatters splatter fragments and a large amount of lead dust upon impact with a bullet, and generates lead concentrations that are 62 times higher than environmental standards.

[0020] In addition, there is damage to the target plate due to the material of the target plate. Plastic or compressed paper target plates accelerate the tumbling of the projectile, causing irregular damage to the rubber plate of the target plate and potentially leading to fire and environmental pollution caused by micro-fragments.

[0021] In addition, in the case of indoor shooting ranges, shooting takes place in a closed space, and since the sound of shooting generates significant noise, it is performed while wearing ear protection headsets; however, there is a problem in that these ear protection headsets also have limitations in blocking the generated noise. Prior art literature

[0023] Korean Patent Publication No. 10-2904285 (Published Dec. 26, 2025) Korean Patent Publication No. 10-2365474 (Published Feb. 23, 2022) Korean Patent Publication No. 10-1788934 (Published Oct. 23, 2017) Korean Patent Publication No. 10-2052633 (Published Dec. 5, 2019) The problem to be solved

[0024] The present invention relates to a ricochet prevention structure for preventing safety accidents caused by bullets or ricochets occurring at live-fire shooting ranges. Conventional protective structures rely primarily on methods that simply absorb or disperse the kinetic energy of the bullet using cushioning materials or multi-layer structures, which results in the problem of ricochets occurring in unexpected directions due to the irregular formation of the bullet's rebound direction.

[0025] In addition, conventional technology had certain limitations in simultaneously considering shock absorption performance and noise reduction performance, and in particular, there were problems such as damage to structures, compromise of user safety, and the possibility of secondary accidents still existing due to the inability to control the direction of travel of the warhead itself.

[0026] Furthermore, conventional structures often treat shock absorption and warhead recovery as separate functions or simply rely on fillers, which has limitations in that they fail to effectively suppress the warhead's external escape and result in reduced recovery efficiency.

[0027] Accordingly, the present invention aims to provide a ricochet prevention structure capable of solving the aforementioned problems by not merely absorbing shock upon impact, but by having multiple components act sequentially to gradually attenuate kinetic energy and simultaneously control the direction of travel of the warhead to suppress the occurrence of ricochets, and furthermore, by inducing the warhead or fragments to remain inside the structure to prevent external escape and simultaneously improve recovery efficiency.

[0028] In addition, another objective of the present invention is to provide a ricochet prevention structure capable of minimizing damage to structures, improving user safety within a shooting range, and simultaneously securing a noise reduction effect.

[0029] The problems solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0031] According to one aspect of the present invention for achieving the above objectives and other features of the present invention, a ricochet prevention device for preventing ricochets in an indoor live-fire shooting range is provided, comprising: a ricochet prevention unit on the impact area side configured to be provided at the upper part of the impact area to prevent the occurrence of ricochets at the upper part of the impact area; a ceiling-side ricochet prevention unit configured to be provided at the ceiling of the shooting range in front of the impact area to prevent the occurrence of ricochets at the ceiling; a side-wall-side ricochet prevention unit configured to be provided at the side-wall of the shooting range in front of the impact area to prevent the occurrence of ricochets at the side-wall; and a structure-side ricochet prevention unit configured to be provided on one side of the shooting range structure to prevent the occurrence of ricochets at the structure.

[0032] According to one aspect of the present invention, the impact area side ricochet prevention unit comprises a plate-shaped warhead buffer member provided on the side facing the firing lane and configured to absorb the impact of a warhead, and a bulletproof member provided on the rear surface of the warhead buffer member and formed of a wear-resistant steel plate, and the ceiling side ricochet prevention unit may comprise a first ceiling side ricochet prevention module provided adjacent to the upper end of the impact area side ricochet prevention unit, a second ceiling side ricochet prevention module provided continuously at the other end of the first ceiling side ricochet prevention module, and a third ceiling side ricochet prevention module provided continuously at the other end of the second ceiling side ricochet prevention module.

[0033] According to one aspect of the present invention, in order to prevent the upper portion of the ricochet prevention unit on the impact area side from being exposed to the firing lane side by the ceiling-side ricochet prevention unit when viewed from the firing lane side, it is preferable that the upper portion of the ricochet prevention unit on the impact area side be positioned behind the end portion of the first ceiling-side ricochet prevention module of the ceiling-side ricochet prevention unit or be positioned in contact with the end portion of the first ceiling-side ricochet prevention module.

[0034] According to one aspect of the present invention, the second ceiling-side ricochet prevention module is composed of two or more unit segments that are divided and provided in a stepped structure, and it is preferable that the unit segments are provided in such a relationship that the end of the other segment, which is the lane-side end, is vertically overlapped with the end of an adjacent unit segment so that the lane-side end is not exposed to the lane side.

[0035] According to one aspect of the present invention, the second ceiling-side ricochet prevention module is formed as a single plate-like body, and it is preferable that the second ceiling-side ricochet prevention module of the unit plate-like body has the lane-side end facing the lane side and the impact-side end of the third ceiling-side ricochet prevention module arranged in an overlapping manner vertically, or that the lane-side end of the second ceiling-side ricochet prevention module is positioned behind or in contact with the impact-side end of the third ceiling-side ricochet prevention module, so that the lane-side end facing the lane side is not exposed to the lane side.

[0036] According to one aspect of the present invention, each of the first to third ricochet prevention modules of the ceiling-side ricochet prevention unit comprises a plate-shaped bullet cushioning member provided on the side facing the firing lane and configured to absorb the impact of a bullet, and a bulletproof member provided on the rear side of the bullet cushioning member and formed of a wear-resistant steel plate, wherein the bullet cushioning member is formed with a thickness of 4 mm to 1,000 mm, and the thickness ratio of the bullet cushioning member to the bulletproof member is preferably set to bullet cushioning member : bulletproof member = 1:1 to 5:1.

[0037] According to one aspect of the present invention, the sidewall-side ricochet prevention unit comprises a cushioning module configured to cushion a bullet, and a bulletproof member made of a wear-resistant steel plate provided on the rear side of the cushioning module, wherein the cushioning module may comprise a cushioning member made of rubber foam and a finishing member provided on the front side of the cushioning member.

[0038] In addition, the anti-ricochet device of the present invention, which is an anti-ricochet device for mitigating impact caused by a bullet or ricochet occurring at a live ammunition shooting range, comprises a buffer section disposed on the front side colliding with the bullet, a ballistic section disposed behind the buffer section, and a structural section that supports the buffer section and the ballistic section so that they are spaced apart from or in contact with each other, wherein the buffer section and the ballistic section are each configured to absorb energy or limit its transmission in response to the impact of the bullet, and wherein the buffer section, the ballistic section, and the structural section do not act independently of each other upon collision with the bullet, but rather attenuate the kinetic energy of the bullet in stages and induce a change in the bullet's reflection path through their arrangement structure and mutual positional relationship.

[0039] According to one aspect of the present invention, the buffer is formed of one or more layers or regions, and each layer or region is formed to have different physical properties or thicknesses, so as to be configured to cause different damping behaviors depending on the position or incidence conditions upon impact of a warhead.

[0040] According to one aspect of the present invention, at least one of the buffer, bulletproof, or structural part is arranged to be inclined, overlap each other, or have a step, and the reflection path of the warhead is induced to change by said arrangement structure.

[0041] According to one aspect of the present invention, the buffer and the bulletproof part are arranged to be spaced apart from or in contact with each other, and are configured such that additional energy transfer is restricted by the bulletproof part after the warhead passes through or collides with the buffer. Effects of the invention

[0043] According to the present invention, the following effects are achieved.

[0044] First, since multiple components do not simply absorb shock but act sequentially according to the collision of the warhead to dampen kinetic energy in stages, there is an effect of improved shock mitigation efficiency compared to conventional single or simultaneous absorption structures.

[0045] Second, by dampening the kinetic energy of the warhead and simultaneously inducing a change in its direction of travel, it suppresses ricochets caused by irregular reflections and prevents deviations in unexpected directions, thereby significantly improving safety.

[0046] Third, by inducing the warhead or fragments to remain inside the structure, re-dispersion to the outside can be prevented, thereby improving the warhead recovery rate and reducing environmental pollution.

[0047] Fourth, since shock absorption, direction control, and warhead capture functions are not performed independently of each other but are organically combined and operate within a single structure, it is possible to simultaneously secure functional efficiency without increasing the complexity of the structure.

[0048] Fifth, the above structure has the effect of improving durability and reducing maintenance costs by minimizing structural damage even under repeated warhead collisions.

[0049] Sixth, since vibration and acoustic energy generated during the shock damping process are reduced together, it is possible to simultaneously secure the effect of noise reduction in a shooting range environment.

[0050] The effects of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0052] Figure 1 is a photograph showing the shapes of a warhead and a ricochet. Figure 2 is a drawing showing the damage to each structure of a live-fire shooter due to actual ricochets in an indoor live-fire shooting range. Figure 3 is a photograph showing the internal impact marks and the penetration of the interior and exterior caused by a ricochet. FIG. 4 is a drawing of a live ammunition shooting facility including a ricochet prevention device for a live ammunition shooting range according to the present invention, viewed from the shooting lane side toward the impact area side. FIG. 5 is a drawing showing an embodiment of a ricochet prevention device for a live ammunition shooting range according to the present invention. FIG. 6 is a drawing showing another embodiment of a ricochet prevention device for a live ammunition shooting range according to the present invention. FIG. 7 is a drawing showing another embodiment of a ricochet prevention device for a live ammunition shooting range according to the present invention. FIG. 8 is a drawing of the impact-side ricochet prevention unit and the ceiling-side ricochet prevention unit included in the ricochet prevention device of a live ammunition shooting range according to the present invention, viewed from one side of the front. FIG. 9 is a view from the rear side of the ricochet prevention unit on the impact side and the ricochet prevention unit on the ceiling side included in the ricochet prevention device of a live ammunition shooting range according to the present invention. FIG. 10 is a drawing showing a case in which a ventilation module included in the ricochet prevention device of a live ammunition shooting range according to the present invention is provided. FIG. 11 is a block diagram schematically showing the configuration of a ricochet control unit included in a ricochet prevention device for a live ammunition shooting range according to the present invention. Specific details for implementing the invention

[0053] Further objects, features, and advantages of the present invention can be more clearly understood from the following detailed description and the accompanying drawings.

[0054] Before providing a detailed description of the present invention, it should be understood that the present invention is capable of various modifications and may have various embodiments, and that the examples described below and illustrated in the drawings are not intended to limit the present invention to specific embodiments, but rather include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention.

[0055] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0056] The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0057] Additionally, terms such as "...part," "...unit," and "...module" described in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware, software, or a combination of hardware and software.

[0058] Furthermore, in the description referring to the attached drawings, identical components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. In describing the present invention, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the present invention, such detailed description is omitted.

[0059] Hereinafter, a ricochet prevention device for a live ammunition shooting range and a live ammunition shooting facility including the same, according to a preferred embodiment of the present invention, will be described in detail with reference to the attached drawings.

[0060] Before the detailed description of each of the ricochet prevention units of the present invention below, the bullet recovery system of Registered Patent No. 10-1644918, Registered Patent No. 10-2226058, and Registered Patent No. 10-1575273, which is the application of the present invention, may be adopted for the bullet recovery system of Registered Patent No. 10-1644918, Registered Patent No. 10-2226058, and Registered Patent No. 10-1575273.

[0061] Additionally, in the description below, "first end (part)" is defined as the end (part) facing the impact area, and "second end (part)" is defined as the end (part) facing the firing lane.

[0062] FIG. 4 is a drawing of a live ammunition shooting facility including a ricochet prevention device for a live ammunition shooting range according to the present invention, viewed from the shooting lane side toward the impact area side; FIG. 5 is a drawing showing one embodiment of a ricochet prevention device for a live ammunition shooting range according to the present invention; FIG. 6 is a drawing showing another embodiment of a ricochet prevention device for a live ammunition shooting range according to the present invention; and FIG. 7 is a drawing showing yet another embodiment of a ricochet prevention device for a live ammunition shooting range according to the present invention. FIG. 8 is a view from the front of a ricochet prevention unit on the impact site side and a ricochet prevention unit on the ceiling side included in a ricochet prevention device for a live ammunition shooting range according to the present invention, FIG. 9 is a view from the rear of a ricochet prevention unit on the impact site side and a ricochet prevention unit on the ceiling side included in a ricochet prevention device for a live ammunition shooting range according to the present invention, FIG. 10 is a drawing showing a case in which a ventilation module included in a ricochet prevention device for a live ammunition shooting range according to the present invention is provided, and FIG. 11 is a block diagram schematically showing the configuration of a ricochet control unit included in a ricochet prevention device for a live ammunition shooting range according to the present invention.

[0063] The ricochet prevention device for a live ammunition shooting range according to the present invention is a ricochet prevention device for preventing ricochets that may occur during live ammunition shooting in an indoor live ammunition shooting range, and as shown in FIGS. 4 to 11, it mainly comprises a ricochet prevention unit on the impact area side (first ricochet prevention unit) (100), a ricochet prevention unit on the ceiling side (second ricochet prevention unit) (200), a ricochet prevention unit on the side wall side (third ricochet prevention unit) (300), and a structure ricochet prevention unit (fourth ricochet prevention unit) (400), and may additionally include a ventilation unit (500).

[0064] Specifically, the ricochet prevention device for a live ammunition shooting range according to the present invention is a ricochet prevention device for preventing ricochets during live ammunition shooting, provided near a target area (10) where a target (11) is located in front of an indoor live ammunition shooting range, and as shown in FIGS. 4 to 11, it comprises: a target area-side ricochet prevention unit (first ricochet prevention unit) (100) provided at the upper part of the target area (10) to mitigate or prevent the bullet from ricocheting to the rear of the target area (10), that is, configured to mitigate or prevent the occurrence of ricochets at the upper part of the target area; and a ceiling-side ricochet prevention unit (second ricochet prevention unit) (200) provided at the ceiling of the shooting range in front of the target area (10) to mitigate or prevent the occurrence of ricochets at the ceiling. The invention includes a side wall-side ricochet prevention unit (third ricochet prevention unit) (300) configured to be provided on the side wall (side) of the shooting range in front of the target area (10) to mitigate or prevent ricochet from occurring on the side wall of the shooting range; and a structure ricochet prevention unit (fourth ricochet prevention unit) (400) configured to be provided on the front or front of the shooting range structure including the support or frame and ceiling light of the target (11) to mitigate or prevent ricochet from occurring on the shooting range structure. In addition, the invention may further include a ventilation unit (500) configured to be provided on the ceiling and / or side wall in front of the target area (10) to ventilate heavy metal fumes and dust, such as lead components, generated by the impact of the bullet.

[0065] The above-mentioned ricochet prevention unit (first ricochet prevention unit) (100) is configured to be provided at the upper part of the impact area (10) to mitigate or prevent bullets from ricocheting to the rear of the impact area (10), that is, to be provided at the upper part of the front structure of the impact area (10) to mitigate or prevent the occurrence of ricochets at the upper part of the impact area.

[0066] The above-mentioned ricochet prevention unit (first ricochet prevention unit) (100) is provided on the side facing the firing lane (front side) and includes a plate-shaped bullet buffer member (110) composed of a material that absorbs the impact force of a bullet, and a plate-shaped bulletproof member (120) provided on the rear side of the bullet buffer member (110) and formed of a wear-resistant steel plate to prevent penetration of the bullet buffer member (110), that is, to block the residual energy of the bullet that has passed through the bullet buffer member (110) to prevent further penetration.

[0067] The above warhead buffer member (110) may be made of a compressed plate of waste tire rubber, natural rubber, or chemical rubber as in the first embodiment.

[0068] In addition, the above-mentioned warhead buffer member (110) may be made of a plate-like body manufactured by mixing and compressing regenerated vulcanized rubber with a density of 1.15 g / cm³ or more and aramid fibers in a weight ratio of 85:15 as a second embodiment.

[0069] And the bulletproof member (120) may be made of a wear-resistant steel plate, preferably AR500, which is an alloy steel containing low-carbon boron (B).

[0070] The above-mentioned ricochet prevention unit (100) on the impact site side may be provided so that its upper end is inclined toward the firing line side at the upper end of the impact site (10) as shown in FIGS. 2, 4 to 6, and may be provided so that it stands upright (vertically) at the upper end of the impact site (10) as shown in FIGS. 3 and 7. Here, the upper end of the above-mentioned ricochet prevention unit (100) on the impact site side is provided in contact with the lower surface of the other end of the above-mentioned ricochet prevention unit (second ricochet prevention unit) (200) to be described below.

[0071] In the above-described ricochet prevention unit (100) on the impact site side, the inventor of the present invention confirmed through live ammunition firing tests at a live ammunition firing range that it is preferable to form the bullet cushioning member (110) with a thickness of 4T (mm) to 65T (mm), and to set the thickness ratio of the bullet cushioning member (110) to the bulletproof member (120) as bullet cushioning member : wear-resistant steel plate = 1:1 to 5:1. The thickness of the bullet cushioning member and the relationship between the bullet cushioning member and the wear-resistant steel plate (bulletproof member) can also be applied to other ricochet prevention units described below.

[0072] It was determined that the warhead buffer member (110) can effectively dampen the velocity and rotational energy while absorbing the primary impact of the warhead, thereby suppressing the rapid reflection of the warhead, and subsequently, the wear-resistant steel plate can stably support and disperse the remaining energy to prevent structural damage.

[0073] In particular, it was found that if the thickness of the warhead buffer member (110) is excessively thin, the shock absorption effect is insufficient, which may increase the possibility of ricocheting, and conversely, if it is excessively thick, there is a risk of warhead penetration or local damage. Therefore, it was found that setting the thickness to the above range and ratio is desirable for simultaneously securing anti-ricochet performance and structural durability. In other words, it was confirmed that if the thickness of the warhead buffer member (110) is excessively thick, the warhead penetrates excessively into the warhead buffer member (110), and a locally concentrated load is transmitted to the bulletproof member (120) without velocity reduction, causing stress to concentrate at specific points of the wear-resistant steel plate (120), resulting in damage such as micro-cracks, surface peeling, or local plastic deformation. Furthermore, it was confirmed that there is a problem in that local damage accumulates due to repeated collisions, reducing structural durability, causing the loss of function as a bulletproof plate, and shortening the service life.

[0074] In addition, the warhead buffer member and the bulletproof member do not merely perform the function of independently absorbing or blocking impact, but can also act to change the energy transfer path resulting from the collision of the warhead through their mutual arrangement structure and positional relationship.

[0075] Specifically, the warhead is decelerated primarily by the buffering member, changing its reflection characteristics, and subsequently, additional energy transfer is restricted by the bulletproof member and adjacent structure, while the reflection path is changed, so that the direction of travel of the ricocheted bullet can be guided non-linearly.

[0076] Accordingly, irregular ricochet caused by the simple recoil of the warhead can be suppressed, and the possibility of the ricocheted projectile escaping outward can be structurally reduced. The aforementioned sloped and overlapping structure induces the warhead's reflection path to change in multiple stages rather than a single direction, thereby contributing to controlling the trajectory of the ricocheted projectile.

[0077] The above-mentioned ricochet prevention unit (first ricochet prevention unit) (100) not only prevents ricochets from occurring at the upper part of the impact area (10), but also serves to prevent bullets that have missed the target at the upper part of the impact area (10) from proceeding to the rear side.

[0078] Next, the ceiling-side ricochet prevention unit (second ricochet prevention unit) (200) is a component configured to be provided in the ceiling of the shooting range in front of the impact area (10) to mitigate or prevent the occurrence of ricochets in the ceiling.

[0079] The above ceiling-side ricochet prevention unit (second ricochet prevention unit) (200) comprises, in one embodiment, a first ceiling-side ricochet prevention module (210) provided such that the upper end of the impact-side ricochet prevention unit (100) is in contact with the lower surface of one end (the end facing the impact area (10)) and the other end is extended toward the firing line; a second ceiling-side ricochet prevention module (220) provided such that one end is in contact with the other end of the first ceiling-side ricochet prevention module (210) and the other end is extended toward the firing line; and a third ceiling-side ricochet prevention module (230) provided such that one end is in contact with the other end of the second ceiling-side ricochet prevention module (220) and the other end is extended toward the firing line.

[0080] The above-mentioned first ceiling-side ricochet prevention module (210) is provided on the side (bottom surface) facing the interior of the indoor shooting range and includes a plate-shaped first bullet cushioning member (211) composed of a material that absorbs the impact force of a bullet, and a plate-shaped first bulletproof member (212) provided on the rear surface of the first bullet cushioning member (211) and formed of a wear-resistant steel plate to prevent penetration of the first bullet cushioning member (211), that is, to block the residual energy of a bullet that has passed through the first bullet cushioning member (211) to prevent further penetration.

[0081] In one embodiment, the first warhead cushioning member (211) may be made of a compressed plate of waste tire rubber, natural rubber, or chemical rubber, and in another embodiment, the first warhead cushioning member (211) may be made of a plate-like body manufactured by mixing recycled vulcanized rubber with a density of 1.15 g / cm³ or more and aramid fibers in a weight ratio of 85:15 and compressing them.

[0082] And the first bulletproof member (212) may be made of a wear-resistant steel plate, preferably AR500, which is an alloy steel containing low-carbon boron (B).

[0083] As shown in FIG. 3, the first ceiling-side ricochet prevention module (210) is provided such that the end (one end) facing the impact site (10) contacts the rear end of the upper portion of the impact site-side ricochet prevention unit (100). Alternatively, the first ceiling-side ricochet prevention module (210) may be provided such that it contacts the front of the upper portion of the impact site-side ricochet prevention unit (100).

[0084] The first ceiling-side ricochet prevention module (210) can be provided horizontally, that is, parallel to the ground, as shown in FIG. 2, FIG. 4 to FIG. 7, and can also be provided at an angle as shown in FIG. 3.

[0085] In addition, the first ceiling-side ricochet prevention module (210) can be horizontally configured by being integrated with the second ceiling-side ricochet prevention module (210), which will be described in detail below, as shown in FIG. 4 (see FIG. 4 to 7).

[0086] Furthermore, the second ceiling-side ricochet prevention module (220) is a component in which one end is provided to be in contact with the other end of the first ceiling-side ricochet prevention module (210), and the other end is provided to be extended toward the firing lane.

[0087] The above second ceiling-side ricochet prevention module (220) is provided on the side (bottom or exposed surface) facing the interior of the indoor shooting range and includes a plate-shaped second bullet buffer member (221) composed of a material that absorbs the impact force of a bullet, and a plate-shaped second bulletproof member (222) provided on the rear (top surface) of the second bullet buffer member (221) and formed of a wear-resistant steel plate to prevent penetration of the second bullet buffer member (221), that is, to block the residual energy of a bullet that has passed through the second bullet buffer member (221) to prevent further penetration.

[0088] The second warhead cushioning member (221) may be made of a compressed plate of waste tire rubber, natural rubber, or chemical rubber in one embodiment, as in the first warhead cushioning member (211), and the second warhead cushioning member (221) may be made of a plate-like body manufactured by mixing recycled vulcanized rubber with a density of 1.15 g / cm³ or more and aramid fibers in a weight ratio of 85:15 and compressing them in another embodiment.

[0089] And the second bulletproof member (222) may be made of a wear-resistant steel plate, preferably AR500, which is an alloy steel containing low-carbon boron (B).

[0090] These second bulletproof members (222) can be provided horizontally, that is, parallel to the ground.

[0091] In the present invention, the second ceiling-side ricochet prevention module (220) may be composed of a plurality of ricochet prevention modules that are divided into two or more and provided in a stepped structure, as shown in FIG. 3. In other words, the second ceiling-side ricochet prevention module (220) may be composed of a plurality of ricochet prevention modules that are divided into two or more and provided in a stepped structure, such that in the configuration between the divided ceiling-side ricochet prevention modules (220a, 220b), the adjacent ends are in a single-layer structure, that is, the end facing the firing lane from one ceiling-side ricochet prevention module (220a) is not exposed or is covered by the end facing the impact area from another ceiling-side ricochet prevention module (220b), that is, the upper surface of the end facing the impact area from another ceiling-side ricochet prevention module (220b) contacts the lower surface of the end facing the firing lane from one ceiling-side ricochet prevention module (220a).

[0092] For example, as shown in FIG. 3, the second ceiling-side ricochet prevention module (220) includes a second-1 ceiling-side ricochet prevention module (220a) that is horizontally provided, and a second-2 ceiling-side ricochet prevention module (220b) that is horizontally provided and extends from the other end of the second-1 ricochet prevention module (220a) toward the firing lane.

[0093] Here, the second-1 ceiling-side ricochet prevention module (220a) is provided with one end in contact with the other end of the first ceiling-side ricochet prevention module (210) so that the other end of the first ceiling-side ricochet prevention module (210) is not exposed to the firing lane. In other words, the second-1 ceiling-side ricochet prevention module (220a) is provided with one end in contact with the lower surface of the other end of the first ceiling-side ricochet prevention module (210).

[0094] And the above-mentioned second-2 ceiling-side ricochet prevention module (220b) is provided with one end in contact with the other end of the second-1 ceiling-side ricochet prevention module (210) so that the other end of the second-1 ceiling-side ricochet prevention module (220a) is not exposed to the firing lane. In other words, the above-mentioned second-2 ceiling-side ricochet prevention module (220b) is provided with one end in contact with the lower surface of the other end of the second-1 ceiling-side ricochet prevention module (220a).

[0095] Furthermore, the third ceiling-side ricochet prevention module (230) is a component in which one end is provided to be in contact with the other end of the second ceiling-side ricochet prevention module (220), and the other end is provided to be extended toward the firing lane.

[0096] Specifically, the third ceiling-side ricochet prevention module (230) is provided on the side facing the interior of the indoor shooting range (bottom or exposed surface) and includes a plate-shaped third bullet buffer member (231) composed of a material that absorbs the impact force of a bullet, and a plate-shaped third bulletproof member (232) provided on the rear (top surface) of the third bullet buffer member (231) and formed of a wear-resistant steel plate to prevent penetration of the third bullet buffer member (231), that is, configured to block the residual energy of a bullet that has passed through the third bullet buffer member (231) to prevent further penetration.

[0097] The third warhead cushioning member (231) may be made of a compressed plate of waste tire rubber, natural rubber, or chemical rubber in one embodiment, as in the warhead cushioning members (211, 221) described above, and the third warhead cushioning member (231) may also be made of a plate-like body manufactured by mixing recycled vulcanized rubber with a density of 1.15 g / cm³ or more and aramid fibers in a weight ratio of 85:15 and compressing them in another embodiment.

[0098] And the third bulletproof member (232) can also be made of wear-resistant steel plate, preferably AR500, which is an alloy steel containing low-carbon boron (B).

[0099] The above-described third ceiling-side ricochet prevention module (230) is provided at an angle as shown in the drawing, and one end thereof is provided to be in contact with the lower surface of the other end of the second ceiling-side ricochet prevention module (220) (the other end of the second-2 ceiling-side ricochet prevention module (220b)). Preferably, it is provided to be in contact with the lower surface of the other end.

[0100] The above-mentioned ceiling-side ricochet prevention unit (second ricochet prevention unit) (200) is preferably provided on the ceiling within a distance of 10m in front of the impact site (10).

[0101] Next, the side wall-side ricochet prevention unit (third ricochet prevention unit) (300) is a component configured to be provided on the side wall (side) of the shooting range in front of the impact area (10) to mitigate or prevent the occurrence of ricochets on the side wall of the shooting range.

[0102] The above-mentioned side wall-side ricochet prevention unit (300) includes a plate-shaped buffer module provided on the side exposed to the inside of the indoor shooting range, and a bulletproof member provided on the rear of the buffer module.

[0103] The above-described cushioning module includes a cushioning member and an exposed surface finishing member provided on the front of the cushioning member and made of a material having relatively greater rigidity than the cushioning member.

[0104] The above cushioning member may be made of a rubber foam mixed with styrene-butadiene-styrene (SBS) rubber particles and a polyethylene-based foam raw material.

[0105] Here, the rubber particles are mixed in an amount of 15 to 30 parts by weight per 100 parts by weight of the foam raw material, and the foaming agent may consist of one or more mixtures selected from azodicarbonamide (ADCA), azodiisobutylonitrile (ABBN), dinitrosopentamethyltetraamine (DNPT), p-toluenesulfonylhydrazide (TSH), and oxybisbenzenesulfonylhydrazide (OBSH).

[0106] It is preferable that the above rubber particles have an average particle size of 0.1 mm to 20 mm.

[0107] In addition, the buffer member may further include at least one flame-retardant material selected from boron, chlorine, bromine, and phosphorus.

[0108] In this way, the above-mentioned buffer member can have a flame-retardant function by containing a flame-retardant material, thereby preventing or minimizing fires that may occur when the buffer module ignites due to frictional heat caused by the impact of the warhead.

[0109] The above finishing member may be made of wood, preferably compressed wood board.

[0110] In addition, polygonal grooves including hemispherical and square shapes may be formed on the outer surface of the above-mentioned finishing member (the surface exposed to the interior of the indoor shooting range) to offset inter-floor and wall noise, thereby reducing noise.

[0111] The above groove can be formed to have a depth of 1 mm to 2 mm (radius in the case of a hemispherical shape) from one side of the finishing member.

[0112] In addition, a frustum of a cone or a frustum of a polygon may be further formed on the bottom surface of the above-mentioned groove. When the above-mentioned protrusion is formed, the height of the protrusion is preferably 1 mm to 3 mm (preferably 1.5 mm).

[0113] In addition, the cushioning member and the finishing member of the cushioning module may be formed with an uneven joint portion on the opposing surface facing each other for press-fit connection, and the cushioning module may also be formed with an uneven joint portion on the cross-section facing each other for press-fit connection between adjacent cushioning members in a planar manner.

[0114] In this way, the interlocking connection between the cushioning member and the finishing member allows for easy replacement in the event of damage to the finishing member, and the interlocking connection between the cushioning modules allows for easy replacement of the unit cushioning module.

[0115] In addition, the rear side of the above buffer member may be provided with a guide groove for guiding the water supply pipe of the sprinkler.

[0116] And the bulletproof member of the above-mentioned side wall-side ricochet prevention unit (300) can be made of a wear-resistant steel plate, preferably AR500, which is an alloy steel containing low-carbon boron (B), just like the bulletproof member of the other ricochet prevention unit described above.

[0117] The above-mentioned side wall ricochet prevention unit (third ricochet prevention unit) (300) is preferably provided on the side wall within a distance of 10m in front of the impact site (10).

[0118] Next, the above-mentioned structure ricochet prevention unit (4th ricochet prevention unit) (400) is a component configured to be provided at the front or front of a shooting range structure including a support or frame and ceiling lights of a target (11) to mitigate or prevent the occurrence of ricochets in the shooting range structure.

[0119] The above-mentioned structure anti-ricochet unit (400) may be composed of a warhead buffer member and a bulletproof member.

[0120] The bullet cushioning member of the above-mentioned structure ricochet prevention unit (400) may be made of a compressed plate of waste tire rubber, natural rubber, or chemical rubber in one embodiment, and in another embodiment, may be made of a plate-like body manufactured by mixing recycled vulcanized rubber with a density of 1.15 g / cm³ or more and aramid fibers in a weight ratio of 85:15 and compressing them.

[0121] And the bulletproof member of the above-mentioned structure ricochet prevention unit (400) can be made of a wear-resistant steel plate, preferably AR500, which is an alloy steel containing low-carbon boron (B).

[0122] Meanwhile, the present invention may further include a ventilation unit (500) configured to ventilate heavy metal fumes and dust, such as lead components, generated by the impact of the bullet, by being provided on the ceiling and / or side wall portions in front of the bullet impact area (10).

[0123] Specifically, the ventilation unit (500) comprises one or more ceiling exhaust modules (510) configured to exhaust air on the ceiling side near the impact area (10) by being provided on the lower end of one end of the ceiling side ricochet prevention unit (200) (i.e., the lower end of the impact area (10) side), one or more side exhaust modules (520) configured to exhaust air on the side near the impact area (10) by being provided on the side wall side ricochet prevention unit (200) on the impact area (10) side, an exhaust fan (not shown) configured to draw in air from each of the exhaust modules (510, 520) and exhaust it to the outside through the following air purification module (530), and an air purification module (530) configured to be provided outside the indoor shooting range and to purify the air drawn in by the exhaust fan and discharge it to the outside.

[0124] Each of the above exhaust modules (510, 520) may be configured to include one or more exhaust ports and exhaust ducts.

[0125] When the exhaust module (510, 520) is provided protruding toward the interior, the previously described structure anti-ricochet unit (4th anti-ricochet unit) (400) is provided on the front side facing the firing lane.

[0126] The air purification module (530) may be configured as a wet scrubber configured to purify air contaminated with gunpowder components and dust generated by firing bullets at an indoor live ammunition shooting range and exhaust it to the outside. Here, the air purification module (530) is a scrubber into which water used as scrubbing water is introduced, and since the water discharged from the scrubber contains contaminants such as gunpowder components and dust, it may be configured to purify wastewater by a water treatment device and then drain it into a sewer pipe.

[0127] Here, the ventilation unit (500) may further include one or more bottom exhaust modules configured to exhaust air on the bottom side near the impact site (10) by being provided on the bottom side of the impact site (10).

[0128] Meanwhile, the ricochet prevention device of the live ammunition shooting range according to the present invention may further include a ricochet control unit (600) configured to actively control the posture or position of the ricochet prevention unit (100) on the impact site side and the ricochet prevention unit (200) on the ceiling side by determining whether or not a ricochet occurs or the possibility of it occurring based on the impact state of the impact site (10).

[0129] The above ricochet control unit (600) includes a projectile detection unit (610) configured to detect a projectile impact state formed on a projectile impact area (10), a control unit (620) that determines whether or not a ricochet occurs or the possibility of occurrence based on projectile impact location, distribution, and pattern data received from the projectile detection unit (610), and a driving unit (630) configured to adjust at least one of the inclination of a projectile impact area-side ricochet prevention unit (100) provided on the upper part of the projectile impact area (10) and the position or inclination of a ceiling-side ricochet prevention unit (200) according to a control signal of the control unit (620).

[0130] Here, the impact detection unit (610) is configured to be an image processing device including a camera, so as to be able to detect the location and distribution of the impact group formed on the surface of the impact area (10) in real time or periodically.

[0131] Additionally, the control unit (620) is configured to generate a control signal when a bullet impact group is concentrated in a specific area, when a bullet impact pattern outside a set reference range is detected, or when it is determined that there is a high probability of ricochet occurring from an abnormal bullet impact distribution.

[0132] And the driving unit (630) is configured to move the inclination of the ricochet prevention unit (100) on the impact area side and / or the posture and position of the ricochet prevention unit (200) on the ceiling side, preferably at least some of the first to third ceiling side ricochet prevention modules (210, 220, 230), in the up and down direction according to the control signal of the control unit (620), or to rotate at a predetermined angle toward the firing lane side or the impact area side, while in the case of a module having a horizontal posture, the end (other end) facing the firing lane side is driven so that it is not exposed toward the firing lane side by the end of an adjacent module.

[0133] The above drive unit (630) may be configured as a linear drive device including a hydraulic cylinder or a pneumatic cylinder as an example.

[0134] In addition, as another embodiment, the drive unit (630) may be configured as an electric drive device including an electric motor and a linear actuator or a ball screw mechanism to precisely control the position of the anti-ricochet module.

[0135] In addition, the above driving unit forms a hinge coupling structure at one or both ends of the anti-ricochet module and is configured to rotate around the hinge axis, and can be adjusted to be inclined at a predetermined angle by the cylinder or electric driving device.

[0136] With this configuration, the driving unit (630) is configured to actively adjust the height and angle of inclination (attitude) of the anti-ricochet module according to the impact condition, thereby controlling the reflection path of the ricochet.

[0137] When configured in this way, the ricochet control unit (600) controls the reflection path of the bullet by actively changing the attitude or placement state of the ricochet prevention module according to the impact state, and effectively prevents safety accidents caused by ricochets by suppressing the occurrence of ricochets in advance or guiding the direction of travel of the generated ricochets in a safe direction.

[0138] According to the ricochet prevention device for a live ammunition shooting range and the live ammunition shooting facility including the same as described above, the present invention has the advantage of preventing ricochets by preventing the bullet from escaping outside the impact area regardless of the angle at which it is deflected, through the ricochet prevention structure at the top of the impact area and the upper and side of the impact area equipped zone, thereby fundamentally blocking the external escape path of the ricochet and preventing casualties caused by ricochets. Furthermore, it has the advantage of minimizing or preventing the occurrence of ricochets by structurally eliminating the ricochet phenomenon of the bullet head caused by the exposed horizontal protrusion (horizontal end) through the ricochet prevention component with an inclined, overlapping, and multi-stage composite structure.

[0139] In addition, the present invention has the advantage of absorbing the primary impact energy of a bullet through a specific configuration of the anti-ricochet component to reduce the amount of lead dust scattering by more than 80% compared to a bulletproof steel plate alone, reducing the reflected energy of the ricochet from 60~80% to 10~20%, and reducing the shooting impact sound by more than 12dB compared to a conventional bulletproof steel plate through a specific configuration of the anti-ricochet component to prevent noise complaints around the shooting range.

[0140] In addition, the present invention has the advantage of enabling optimal installation tailored to the spatial conditions of the shooting range by configuring the ricochet prevention component provided on the ceiling side in front of the impact area in various embodiments, and effectively managing the indoor environment of the shooting range by preventing ricochets from multiple directions and effectively ventilating heavy metal fumes and dust, such as lead components, generated during the process of bullet breakage.

[0141] The embodiments described in this specification and the accompanying drawings are merely illustrative of a part of the technical concept included in the present invention. Accordingly, since the embodiments disclosed in this specification are intended to explain, not limit, the technical concept of the present invention, it is obvious that the scope of the technical concept of the present invention is not limited by these embodiments. All variations and specific embodiments that can be easily deduced by a person skilled in the art within the scope of the technical concept included in the specification and drawings of the present invention should be interpreted as being included within the scope of the rights of the present invention. Explanation of the symbols

[0143] 10: Impact area 11: Target 100: Impact side ricochet prevention unit (1st ricochet prevention unit) 110: Warhead buffer member 120: Bulletproof absence 200: Ceiling-side ricochet prevention unit (2nd ricochet prevention unit) 210: 1st Ceiling-side Ricochet Prevention Module 211: First warhead buffer member 212: 1st Bulletproof Missile 220: 2nd Ceiling-side Ricochet Prevention Module 220a: 2-1 Ceiling-side ricochet prevention module 220b: 2-2 Ceiling-side Ricochet Prevention Module 221: Second warhead buffer member 222: 2nd Bulletproof Missile 230: 3rd Ceiling-side Ricochet Prevention Module 231: Third warhead buffer member 232: Third Bulletproof Missing 300: Sidewall anti-ricochet unit (3rd anti-ricochet unit) 400: Structure Anti-Ribbit Unit (4th Anti-Ribbit Unit) 500: Ventilation unit 510: Ceiling exhaust module 520: Side exhaust module 530: Air purification module 600: Ricochet Control Unit 610: Impact detection unit 620: Control unit 630: Drive unit

Claims

Claim 1 A ricochet prevention device for preventing ricochets in an indoor live ammunition shooting range, comprising: a ricochet prevention unit on the impact area side configured to be provided at the upper part of the impact area to prevent the occurrence of ricochets at the upper part of the impact area; a ricochet prevention unit on the ceiling side configured to be provided at the ceiling of the shooting range in front of the impact area to prevent the occurrence of ricochets at the ceiling; and a ricochet prevention unit on the side wall side configured to be provided at the side wall of the shooting range in front of the impact area to prevent the occurrence of ricochets at the side wall. A structure ricochet prevention unit configured to be provided on one side of a shooting range structure to prevent ricochets from occurring in the structure; wherein the impact area side ricochet prevention unit comprises a plate-shaped bullet cushioning member provided on the side facing the firing lane and configured to absorb the impact of a bullet, and a bulletproof member provided on the rear surface of the bullet cushioning member and formed of a wear-resistant steel plate; and the ceiling side ricochet prevention unit comprises a first ceiling side ricochet prevention module provided adjacent to the upper end of the impact area side ricochet prevention unit, a second ceiling side ricochet prevention module provided continuously at the other end of the first ceiling side ricochet prevention module, and a third ceiling side ricochet prevention module provided continuously at the other end of the second ceiling side ricochet prevention module.A ricochet prevention device for a live ammunition shooting range, comprising: a second ceiling-side ricochet prevention module composed of two or more unit segments divided into a stepped structure, wherein the unit segments are arranged such that the other end, which is the lane-side end, is not exposed to the lane side among the horizontal ends, and the end of an adjacent unit segment is arranged in a vertically overlapping relationship with the other end of the adjacent unit segment; and further comprising a ricochet control unit configured to adjust the posture and position of at least one of the impact site-side ricochet prevention unit and the ceiling-side ricochet prevention unit, wherein the ricochet control unit comprises a bullet impact detection unit that detects the impact state of the impact site, a control unit that determines whether or not a ricochet occurs or is likely to occur based on data received from the bullet impact detection unit, and a driving unit configured to move up and down or drive at least one of the impact site-side ricochet prevention unit and the ceiling-side ricochet prevention unit in an inclined manner according to a control signal from the control unit. Claim 2 delete Claim 3 A ricochet prevention device for a live ammunition shooting range according to claim 1, characterized in that, when viewed from the shooting lane side, the upper part of the ricochet prevention unit on the impact side is not exposed to the shooting lane side by the ceiling side ricochet prevention unit, and the upper part of the ricochet prevention unit on the impact side is positioned behind the first ceiling side ricochet prevention module of the ceiling side ricochet prevention unit or is positioned in contact with the first ceiling side ricochet prevention module. Claim 4 delete Claim 5 A ricochet prevention device for preventing ricochets in an indoor live ammunition shooting range, comprising: a ricochet prevention unit on the impact area side configured to be provided at the upper part of the impact area to prevent the occurrence of ricochets at the upper part of the impact area; a ricochet prevention unit on the ceiling side configured to be provided at the ceiling of the shooting range in front of the impact area to prevent the occurrence of ricochets at the ceiling; and a ricochet prevention unit on the side wall side configured to be provided at the side wall of the shooting range in front of the impact area to prevent the occurrence of ricochets at the side wall. The structure ricochet prevention unit is provided on one side of the shooting range structure and configured to prevent ricochets from occurring in the structure; wherein the impact area side ricochet prevention unit includes a plate-shaped bullet cushioning member provided on the side facing the firing lane and configured to absorb the impact of a bullet, and a bulletproof member provided on the rear surface of the bullet cushioning member and formed of a wear-resistant steel plate; wherein the ceiling side ricochet prevention unit includes a first ceiling side ricochet prevention module provided adjacent to the upper end of the impact area side ricochet prevention unit, a second ceiling side ricochet prevention module provided continuously at the other end of the first ceiling side ricochet prevention module, and a third ceiling side ricochet prevention module provided continuously at the other end of the second ceiling side ricochet prevention module; wherein the second ceiling side ricochet prevention module is formed as a single plate body, and the second ceiling side ricochet prevention module of the unit plate body has a firing lane side end facing the firing lane that is not exposed to the firing lane. A ricochet prevention device for a live ammunition shooting range, characterized in that the lane-side end of the second ceiling-side ricochet prevention module and the impact-side end of the third ceiling-side ricochet prevention module are arranged to overlap vertically so as not to be misaligned, or the lane-side end of the second ceiling-side ricochet prevention module is positioned behind or in contact with the impact-side end of the third ceiling-side ricochet prevention module. Claim 6 A ricochet prevention device for a live ammunition shooting range according to claim 1, wherein each of the first to third ricochet prevention modules of the ceiling-side ricochet prevention unit comprises a plate-shaped bullet cushioning member provided on the side facing the firing lane and configured to absorb the impact of a bullet, and a bulletproof member provided on the rear side of the bullet cushioning member and formed of a wear-resistant steel plate, wherein the bullet cushioning member is formed with a thickness of 4 mm to 1,000 mm, and the thickness ratio of the bullet cushioning member to the bulletproof member is set to bullet cushioning member : bulletproof member = 1:1 to 5:

1. Claim 7 A ricochet prevention device for a live ammunition shooting range according to claim 1, wherein the side wall-side ricochet prevention unit comprises a cushioning module configured to cushion a bullet, and a bulletproof member made of a wear-resistant steel plate provided on the rear of the cushioning module, and wherein the cushioning module comprises a cushioning member made of rubber foam and a finishing member provided on the front of the cushioning member. Claim 8 delete Claim 9 delete Claim 10 delete Claim 11 delete

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