JP5525309B2 - Stopping device - Google Patents

Description

  The present invention relates to a bullet stopping device, and more particularly to a bullet stopping device in which a granular member for reducing the speed of a bullet is accommodated.

  2. Description of the Related Art A stopping device for avoiding a bullet used in actual shooting training is known. Among such bullet stopping devices, there is one in which a granular member for reducing the speed of a bullet is accommodated inside. In this type of bullet-stop device, the bullets will be mixed and mixed with the granular material, so when many bullets accumulate inside the bullet-stop device, avoiding crushing due to collision with a new shot bullet It is necessary to collect bullets as much as possible.

  For this reason, for example, a fraction collection device for a stopping device has been proposed in which a granular member including a bullet is sucked by a suction hose and sent to a separator that collects the bullet of the conveying airflow column to separate the bullet from the granular member ( For example, see Patent Document 1).

JP 2005-125221 A

  In the technique described in the above-mentioned patent document, the bullet is separated from the granular member by sucking the bullet from the bullet stopping device together with the granular member and sending it to an external separation device. However, in such a separation method, a large suction force is required for suction of the granular member, so that a large suction device is required, and a large path for transporting the sucked granular member and the bullet is also required. For this reason, the technique described in the above-mentioned patent document has problems in terms of downsizing and cost reduction of the apparatus.

  The present invention has been made in view of these problems, and an object thereof is to appropriately separate a bullet from a granular member while realizing space saving and low cost.

  In order to solve the above-described problems, a bullet stopping device according to an aspect of the present invention includes a penetrating member provided so that a bullet can penetrate therethrough, and a granular member that stops the bullet penetrating the penetrating member and entering the inside. And a fluidizing means for fluidizing the granular member accommodated in the accommodating portion so as to separate the bullets retained in the accommodating portion from the granular member.

  According to the present invention, a bullet can be appropriately separated from a granular member while realizing space and low cost.

It is a front view of a bullet stopping device concerning a 1st embodiment. It is a right view of a bullet stopping device concerning a 1st embodiment. (A) is a figure which shows typically the inside of the accommodating part before a vibration is given in the stopping device which concerns on 1st Embodiment, (b) is the stopping device which concerns on 1st Embodiment. It is a figure which shows typically the inside of the accommodating part after a vibration is given in FIG. (A) is a figure which shows typically the inside of the accommodating part before a vibration is given in the stopping device which concerns on 2nd Embodiment, (b) is the stopping device which concerns on 2nd Embodiment. It is a figure which shows typically the inside of the accommodating part after a vibration is given in FIG.

  Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a front view of a bullet stopping device 10 according to the first embodiment. FIG. 2 is a right side view of the bullet stopping device 10 according to the first embodiment. Hereinafter, the configuration of the bullet stopping device 10 will be described with reference to both FIG. 1 and FIG. 2.

  The bullet stopping device 10 includes a penetrating member 12, a backstop 14, a side plate 16, and a base unit 18. The penetrating member 12 is vertically arranged so as to cover the front surface. The penetrating member 12 is formed of an elastic material capable of penetrating a predetermined bullet assumed to be used when shooting training is performed using the bullet stopping device 10. Specifically, the penetrating member 12 is formed of, for example, vulcanized rubber, unvulcanized rubber, resin, or the like, in which the through hole contracts after the bullet has penetrated to form a landing mark such as a pinhole. The predetermined bullet of the stopping device 10 is a bullet having a diameter of 9 mm and a length of 15 mm to 20 mm. Of course, the predetermined bullet is not limited to this.

  The backstop 14 has the same size as that of the penetrating member 12, and is arranged vertically so as to be parallel to the penetrating member 12 behind the penetrating member 12. The backstop 14 is formed of a special steel plate having a high hardness so that there is almost no damage even after landing or only a small damage remains. A side plate 16 is provided on each side surface of the space between the penetrating member 12 and the backstop 14. Thus, the penetrating member 12, the backstop 14, and the side plate 16 are connected to each other to form a square cylindrical shape.

  The base unit 18 supports the penetrating member 12, the backstop 14, and the side plate 16 below. The base unit 18 includes a side plate 20 and a base plate 22. The base plate 22 is formed in a rectangular shape. Four side plates 20 are provided, and are arranged so as to stand vertically from each of the four edges of the base plate 22. Thus, the base unit 18 and the four side plates 20 are combined to form a box shape.

  A bullet collection mechanism 26 is provided inside the side plate 20. The bullet collection mechanism 26 has a hopper 28. The hopper 28 has an edge connected to the lower opening formed by the penetrating member 12, the backstop 14, and the side plate 16. The hopper 28 has an inclined portion 28a, a tube portion 28b, and a discharge port 28c. The pipe portion 28b is arranged so as to extend in the vertical direction at the center and below the hopper 28. The inclined portion 28a has a lower end connected to the upper end of the tube portion 28b. The inclination part 28a inclines so that it may fall, so that it approaches the upper end part of the pipe part 28b from its edge part. The discharge port 28c is provided on the side surface near the lower end of the tube portion 28b, and bullets separated as described later are discharged from the discharge port 28c.

  Thus, the accommodating portion 30 is formed in a region surrounded by the penetrating member 12, the backstop 14, the side plate 16, and the hopper 28. When the bullet stopping device 10 is used for shooting training, the bullet penetrates the penetrating member 12 and enters the inside of the accommodating portion 30. However, it is necessary to reduce the speed of the bullet sufficiently within the housing portion 30 and finally stop the bullet so that the bullet hitting the backstop 14 does not penetrate the penetrating member 12 again.

  For this reason, the accommodating part 30 is provided so that the granular member 4 can be accommodated inside. The granular member 4 contacts and decelerates the bullet that has penetrated the penetrating member 12 and entered inside, and finally stops the bullet. In FIG. 1 and FIG. 2, a state in which the granular member 4 is filled in the accommodating portion 30 is shown. By filling the granular member 4 in this way, even when the stopping device 10 is used for sniper training of a sniper rifle that fires bullets at a high speed of, for example, 800 to 900 m / sec, The bullet can be stopped properly inside.

  The granular member 4 is made of a material having a specific gravity and hardness lower than that of a predetermined bullet. In the first embodiment, a rubber chip is employed as the granular member 4. By forming the granular member 4 from a material having a high frictional resistance such as rubber, it is possible to appropriately stop the bullets entering the inside of the accommodating portion 30. The granular member 4 may be formed of another material having a specific gravity and hardness lower than a predetermined bullet, for example, a resin material, instead of rubber.

  The granular member 4 is formed in a predetermined size having a particle size of 2 mm or more and 5 mm or less. In addition, not all the granular members 4 need to be this size, and for example, most granular members 4 such as 95% or more may be this size.

  Since the granular member 4 does not have a perfect spherical shape, the “particle diameter” is hereinafter referred to as a circumscribed circle equivalent diameter. Of course, the definition of the particle size is not limited to this, for example, biaxial average diameter, triaxial average diameter, constant tangent diameter, constant direction area divided diameter, constant direction maximum diameter, equivalent to area circle Either a diameter or a volume sphere equivalent diameter may be used. Needless to say, the particle size of the granular member 4 is not limited to 2 mm or more and 5 mm or less, and the particle size of the granular member 4 may be less than 2 mm or greater than 5 mm.

  When the bullet stopping device 10 is used for a long period of time in the shooting training, the number of bullets stopped inside the accommodating portion 30 increases. In order to avoid the collision of bullets and prevent the bullets from being crushed, it is sometimes necessary to collect the bullets that are retained inside the storage unit 30. However, when all the granular members 4 are ejected together with the bullets from the accommodating portion 30 by using the recovery mechanism to separate the bullets from the granular members 4, the recovery mechanism becomes large and space saving is difficult. It is also difficult to reduce the cost of the recovery mechanism.

  For this reason, the bullet stopping device 10 includes a vibration generating mechanism 32. The vibration generating mechanism 32 includes a motor (not shown) and an eccentric member (not shown) driven by the motor, and generates vibration when the motor drives the eccentric member. Since the configuration of such a vibration generating mechanism 32 is known, description thereof is omitted. Note that other configurations may be adopted for the vibration generating mechanism 32.

  The vibration generating mechanism 32 is attached to the outer surface of the inclined portion 28 a and applies vibration to the hopper 28. The vibration generating mechanism 32 gives vibration to the granular member 4 accommodated in the accommodating portion 30 so as to separate the bullets retained in the accommodating portion 30 from the granular member 4 by applying vibration to the accommodating portion 30 in this way. Fluidize. Therefore, the vibration generating mechanism 32 functions as fluidizing means for fluidizing the granular member 4. Note that the vibration generating mechanism 32 may be provided in another location of the bullet stopping device 10. Further, the vibration generating mechanism 32 vibrates the granular member 4 accommodated in the accommodating portion 30 by applying vibration to a member such as a rod or plate inserted inside the accommodating portion 30 so as to be in contact with the granular member 4. May be given.

  Furthermore, for example, the side plate 16 or the hopper 28 may be provided with an air introduction hole through which the granular member 4 and the bullet cannot pass. An air introduction mechanism such as a pump for introducing air from the air introduction hole may be provided. In this case, the air introduction mechanism fluidizes the granular member 4 by blowing air from the air introduction hole into the interior of the accommodating portion 30 so that the bullets retained in the accommodating portion 30 are separated from the granular member 4. Also good. In this case, the air introduction mechanism functions as fluidizing means. This also allows the bullets to be separated from the granular member 4.

  FIG. 3A is a view schematically showing the inside of the accommodating portion 30 before vibration is applied in the bullet stopping device 10 according to the first embodiment, and FIG. 3B is a diagram showing the first embodiment. It is a figure which shows typically the inside of the accommodating part 30 after a vibration is given in the bullet stop apparatus 10 which concerns on a form.

  Before the vibration is generated by the vibration generating mechanism 32, the bullet 2 is stopped in a state of being scattered in the granular member 4 as shown in FIG. As a result of earnest research and development by the inventor, it is found that the so-called fluidization can be caused in the granular member 4 and the bullet 2 by applying vibration to the granular member 4 through the accommodating portion 30 by the vibration generating mechanism 32. did. When fluidization occurs in this way, a material having a large specific gravity moves downward than a material having a small specific gravity. Since the bullet 2 has a specific gravity greater than that of the granular member 4, it moves downward when vibration is applied by the vibration generating mechanism 32. Thus, the bullet 2 can be separated from the granular member 4 as shown in FIG.

  As described above, the inclined portion 28a is provided below the accommodating portion 30, and the inclined portion 28a guides the separated bullets to the discharge port 28c through the tube portion 28b. Thus, the bullet 2 can be separated and collected from the granular member 4 while the granular member 4 is accommodated in the accommodating portion 30, and the size and space saving of the mechanism for collecting the bullet 2 can be realized.

  Returning to FIG. 1 and FIG. The bullet collection mechanism 26 further includes a transport mechanism 34 that transports the separated bullets to the discharge port 28c. The transport mechanism 34 includes a screw feeder 36 and a motor 38. The screw feeder 36 is provided coaxially in the discharge port 28c. The motor 38 is provided below the pipe portion 28 b and drives the screw feeder 36. Since the shape and structure of the screw feeder 36 are known, the description thereof is omitted. When the screw feeder 36 is driven, the bullets in the screw feeder 36 are conveyed downward and discharged from the discharge port 28c.

  The bullet stopping device 10 is provided with an electronic control unit 80. The electronic control unit 80 includes a CPU that executes various arithmetic processes, a ROM that stores various control programs, a RAM that is used as a work area for data storage and program execution, and the like, and is provided in the stopping device 10. Control the actuator. The electronic control unit 80 controls the drive of the screw feeder 36 by controlling the operation of the motor 38.

  Of course, the transport mechanism 34 is not limited to a screw feeder. For example, instead of the screw feeder 36, a rotary valve may be used. Since the rotary valve is known, the description thereof is omitted. Further, the transport mechanism 34 may be deleted. Since the inclined portion 28 a is provided below the housing portion 30, the separated bullets 2 are separated while the granular member 4 is vibrated by the vibration generating mechanism 32 even when the transport mechanism 34 is not provided. It is guided to the lower discharge port 28c.

  The bullet stopping device 10 further includes a tube 40, a separation mechanism 42, a bullet collection box 44, and a discharge tube 46. The tube 40 has one end connected to the discharge port 28 c and the other end connected to the separation mechanism 42, and feeds the bullet discharged from the discharge port 28 c to the separation mechanism 42. The granular member 4 may be mixed and discharged from the discharge port 28c together with the bullet. The separation mechanism 42 blows only the granular member 4 having a specific gravity smaller than that of the bullet by blowing air to the discharge destination from the tube 40, and drops only the bullet further downward. Since such a separation mechanism 42 is known, the description thereof is omitted. The separation mechanism 42 is connected to a discharge pipe 46 communicating with the outside of the stopping device 10, and the granular member 4 blown off by the separation mechanism 42 is discharged out of the stopping device 10 from the granular member discharge port 46 a. The

  A conduit 50 is connected to the granular member discharge port 46 a of the discharge pipe 46. A cyclone separator (not shown) is provided at the tip of the conduit 50. Since the cyclone separator is known, the description thereof is omitted. Thereby, even when a bullet is discharged from the granular member discharge port 46a, it is possible to appropriately extract the bullet from the granular member 4. The cyclone separator is connected to the return pipe 52, and the return port 52 a of the return pipe 52 is directed from above the storage part 30 to the storage part 30. The granular member 4 separated by the cyclone separator is returned to the accommodating portion 30 from the return port 52a. The separation mechanism 42 or the cyclone separator may be deleted.

  A bullet collection box 44 is provided below the separation mechanism 42, and bullets dropped from the separation mechanism 42 are accommodated in the bullet collection box 44. The side plate 20 in the vicinity of the bullet collection box 44 is provided with a bullet collection port 20a. The user can take out the bullets stored in the bullet collection box 44 from the bullet collection port 20a.

  The bullet collection box 44 is provided with a filter 45 for separating the bullets from the granular member 4. The filter 45 has a plurality of openings. Each of the plurality of openings is provided such that one of a predetermined bullet and the granular member 4 can pass therethrough. In the first embodiment, since the granular member 4 is smaller than the predetermined bullet, the plurality of openings are provided so that the granular member 4 can pass therethrough and the predetermined bullet cannot pass therethrough.

  Specifically, as described above, the granular member 4 accommodated in the accommodating portion 30 is formed in a predetermined size smaller than the smallest hole through which a predetermined bullet can pass. Since the predetermined bullet has a diameter of 9 mm and a length of 15 mm or more and 20 mm or less, the smallest hole through which the predetermined bullet can pass is a hole having a diameter of 9 mm. Since the granular member 4 has a predetermined particle size of 2 mm or more and 5 mm or less, the granular member 4 can pass as long as the diameter is larger than 5 mm. Thus, for example, each of the plurality of openings of the filter 45 may be a round hole having a diameter greater than 5 mm and less than 9 mm. Thus, the filter 45 can appropriately separate the bullet and the granular member 4 by the filter 45 even when the granular member 4 is mixed with the bullet from the separation mechanism 42 and falls. The granular member 4 may be larger than the predetermined bullet, and each of the plurality of openings of the filter 45 may be provided so that the predetermined bullet can pass and the granular member 4 cannot pass.

  A metal sensor 48 is provided on the tube portion 28b. The metal sensor 48 is provided in an annular shape so as to surround the tube portion 28b, and detects the passage of metal inside the tube portion 28b. Since such a metal sensor 48 is known, the description thereof is omitted. Other types of metal sensors may be used.

  The metal sensor 48 transmits the detection result to the electronic control unit 80. The bullet stopping device 10 is provided with a collection switch (not shown) for collecting bullets. When this recovery switch is pushed by the user, the electronic control unit 80 first operates only the vibration generating mechanism 32 without operating the motor 38 of the transport mechanism 34, and moves the bullets stopped in the storage unit 30 downward. And separated from the granular member 4. When a sufficient time has elapsed from when the metal sensor 48 detects the movement of the bullet to the tube portion 28b until the tube portion 28b is filled with the bullet, the electronic control unit 80 operates the motor 38, The separated bullets are sequentially discharged from the discharge port 28c.

  When a predetermined time has elapsed since it is estimated that all bullets filled in the tube portion 28b have been discharged after the movement of the bullet is no longer detected by the metal sensor 48 during the operation of the motor 38, the electronic control unit 80 The operation of the generating mechanism 32 and the motor 38 is stopped. The electronic control unit 80 may stop the operation of the vibration generating mechanism 32 when starting the operation of the motor 38.

(Second Embodiment)
Fig.4 (a) is a figure which shows typically the inside of the accommodating part 30 before a vibration is given in the bullet stop apparatus 10 which concerns on 2nd Embodiment, FIG.4 (b) is 2nd implementation. It is a figure which shows typically the inside of the accommodating part 30 after a vibration is given in the bullet stop apparatus 10 which concerns on a form. Hereinafter, unless otherwise specified, the configuration and operation of the bullet stopping device 10 according to the second embodiment are the same as those in the first embodiment. The same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  In the second embodiment, the small granular member 6 that is a rubber chip is accommodated together with the granular member 4 in the accommodating portion 30. For this reason, the small granular member 6 has the same specific gravity as the granular member 4 and has a lower specific gravity than the bullet 2. The material of the small granular member 6 is not limited to rubber, and may be formed of another material having a specific gravity lower than that of the bullet 2. The small granular member 6 may be originally accommodated in the accommodating portion 30 together with the granular member 4, or may be put into the accommodating portion 30 by the user immediately before the vibration generating mechanism 32 is operated to collect the bullet 2.

  The small granular member 6 is formed in a predetermined size smaller than the smallest hole through which a predetermined bullet can pass and smaller in particle diameter than the granular member 4. Specifically, the small granular member 6 is formed so as to have a particle diameter of 1 mm. Needless to say, the particle diameter of the small granular member 6 is not limited to this, and may be other particle diameters smaller than 2 mm which is the minimum particle diameter of the granular member 4.

  Before the vibration is generated by the vibration generating mechanism 32, the bullet 2 is stopped in a state of being scattered in the granular member 4 and the small granular member 6 as shown in FIG. When vibration is applied to the granular member 4 and the small granular member 6 through the accommodating portion 30 by the vibration generating mechanism 32, the bullet 2 having a higher specific gravity than the granular member 4 and the small granular member 6 moves downward. Thus, the bullet 2 is separated from the granular member 4 and the small granular member 6. The granular member 4 and the small granular member 6 have the same specific gravity, but the small granular member 6 having a smaller particle diameter moves downward than the granular member 4 due to vibration. Thus, as shown in FIG. 4B, the bullet 2, the small granular member 6, and the granular member 4 are separated from below to form respective layers, as shown in FIG. 4B.

  By placing the small granular member 6 in the accommodating portion 30 in this manner, the separation mechanism 42 and the filter 45 can be separated from the bullet 2 more easily than the granular member 4. For this reason, the bullet 2 can be collected more appropriately. The plurality of openings provided in the filter 45 may be provided so that the small granular member 6 can pass therethrough and a predetermined bullet cannot pass therethrough. Specifically, each of the plurality of openings in the filter 45 may be a round hole having a diameter of 1 mm or more and less than 9 mm.

  The small granular member 6 may be formed of another material having a specific gravity lower than that of the bullet 2. For example, the small granular member 6 may be an iron ball having a specific gravity lower than that of the bullet 2. Thereby, the small granular member 6 can be moved below the granular member 4 more appropriately. Further, if the small granular member 6 is formed into a spherical shape, the small granular member 6 can easily pass through the opening of the filter 45, so that the bullet 2 and the small granular member 6 can be more appropriately separated using the filter 45. It becomes possible. In this case as well, the plurality of openings provided in the filter 45 are provided such that the small granular member 6 can pass therethrough and a predetermined bullet cannot pass through.

  The present invention is not limited to the above-described embodiments, and an appropriate combination of the elements of each embodiment is also effective as an embodiment of the present invention. Various modifications such as design changes can be added to each embodiment based on the knowledge of those skilled in the art, and embodiments to which such modifications are added can also be included in the scope of the present invention.

  2 bullets, 4 granular members, 6 small granular members, 10 bullet stopping devices, 12 penetrating members, 14 backstops, 26 bullet recovery mechanisms, 28 hoppers, 28a inclined portions, 28b pipe portions, 28c discharge ports, 30 accommodating portions, 32 vibration generating mechanism, 34 transport mechanism, 36 screw feeder, 38 motor, 44 bullet collection box, 45 filter, 48 metal sensor.

Claims (11)

An accommodating portion provided so that the granular member can be accommodated therein so as to stop the bullet that has penetrated the penetrating member provided so as to penetrate the bullet and entered the interior;
Fluidizing means for fluidizing the granular member accommodated in the accommodating portion so that the bullets retained in the accommodating portion are separated from the granular member;
A sensor for detecting movement of a bullet to a region on a lower end side of the housing portion and having a discharge port from which a separated bullet is discharged;
A transport mechanism for transporting the separated bullets to the discharge port;
A control unit for controlling the transport mechanism ,
The said control part operates the said conveyance mechanism after predetermined time progress, after the said sensor detects the movement of the bullet to the said area | region, The bullet stop apparatus characterized by the above-mentioned . The controller is
Actuating the transport mechanism after a first time has elapsed since the sensor detected the movement of the bullet into the area;
2. The bullet stopping device according to claim 1 , wherein the transport mechanism is stopped after a second time has elapsed since the sensor no longer detects the movement of a bullet into the region . The control unit further controls the fluidizing means,
The said control part stops the said fluidization means after the said 2nd time progress, The bullet stop apparatus of Claim 2 characterized by the above-mentioned. The said fluidization means contains the vibration generation mechanism made to fluidize by giving a vibration to the granular member accommodated in the said accommodating part, The bullet stopping device of Claim 1 or 3 characterized by the above-mentioned. The bullet stopping device according to claim 4 , wherein the vibration generating mechanism applies vibration to the housing portion. The said accommodation part has an inclination part which guides the isolate | separated bullet to the said discharge port, The bullet stop apparatus in any one of Claim 1 to 5 characterized by the above-mentioned. A filter for separating a bullet from the granular member ;
Before SL filter is disposed discharge destination of the outlet, a plurality of openings one predetermined bullets and the granular member is provided with each possible passage entering the inside is assumed in the housing part The bullet stopping device according to any one of claims 1 to 6 , further comprising: Said particulate member from claim 1, characterized in that it comprises a first particulate member having a predetermined particle size, and a second particulate member having a smaller predetermined grain size than the first particulate member, the The bullet stopping device according to any one of 6 . A filter for separating a bullet from the granular member ;
Claim before Symbol filter, which is disposed discharge destination of the outlet, the predetermined bullets second particulate member can pass and is characterized by having a plurality of openings, each provided so as not to pass The bullet stopping device according to 8. The granular member includes a first granular member having a specific gravity smaller than that of a predetermined bullet assumed to enter the inside, and a second granular member having a specific gravity smaller than that of the predetermined bullet and larger than that of the first granular member. When, stopping bullets device according to claim 1, wherein 6 to include. A filter for separating a bullet from the granular member ;
Before SL filter is disposed discharge destination of the outlet, the housing portion a plurality of one of a predetermined projectile and said second particulate member which enters into the inside is assumed provided with each possible passage of The stopping device according to claim 10, further comprising an opening.

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