Drag light device structure

Abstract

The utility model discloses a tracer device structure which comprises a shell, a central hole and a main charging groove which is communicated with one circumferential side of the central hole and is wound outside the central hole are arranged in the shell, a hole opening at one axial end of the central hole is an ignition opening, and black powder is filled in the ignition opening. Ignition powder pressed on the black powder and transition powder pressed on the ignition powder are arranged in the center hole, and a double-base emission tablet is further arranged in the ignition opening; the rotating direction of the main charging groove is opposite to the rotating direction of the shell during flying, and the main charging groove is filled with main charging powder and transition powder pressed on the main charging powder. After the cannonball is shot out, a stable and reliable tracer effect is achieved, and the main problems that a traditional tracer device is generally unreliable in ignition performance, scattered in the flying process and broken in fire are solved.

Description

Technical Field

[0001] This utility model relates to the field of tracer devices, specifically a tracer device structure. Background Technology

[0002] The tracer device is mounted on the bottom of the shell. During firing, the high temperature and pressure environment inside the gun barrel ignites the tracer device simultaneously. After the shell leaves the barrel, it continues to emit light, indicating the shell's trajectory and used to correct its course. Currently, the commonly used tracer device involves pressing the ignition propellant and transition propellant along the shell's flight direction, while the main charge is pressed onto a curved surface along the shell's rotation direction. This method has the following problems:

[0003] 1. The traditional ignition sequence of a tracer device is igniter, transition charge, and main charge. The igniter's press-fit surface is a planar structure, which makes it difficult to ignite when receiving ignition.

[0004] 2. Traditional tracer devices lack a propellant-blocking structure in the center hole. Under high overload conditions, the propellant layer in the center hole is easily thrown out, causing sparks and misfires.

[0005] 3. In the traditional tracer device structure, the rotation direction of the main charge tank is the same as that of the shell. When the shell rotates at high speed, the burning surface of the main charge is easily peeled off, causing sparks and misfiring.

[0006] 4. In traditional tracer devices, the main charge is filled separately in the main charge tank, which can easily lead to flameout during combustion.

[0007] 5. Traditional tracer devices have countersunk holes on the bottom plane. During installation, a pin-type wrench needs to be inserted into the countersunk hole to rotate the knob. This is not easy to operate, the rotation force is insufficient, and there is a risk of improper installation. Utility Model Content

[0008] This invention provides a tracer device structure to solve the problems existing in the prior art tracer devices.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A tracer device structure includes a housing 6, the housing 6 having a central hole inside, and a main charge groove that rotates around the central hole from one side circumferentially, with the starting end of the main charge groove connected to the corresponding side of the central hole. One axial end of the central hole serves as an ignition port, into which black powder 2 is loaded. The central hole contains an ignition charge 3 pressed onto the black powder 2 and a transition charge 4.1 pressed onto the ignition charge 3. The ignition port also contains a double-base propellant sheet 1 tightly attached to the black powder 2, through which the black powder 2 is compacted onto the ignition charge 3.

[0011] The rotation direction of the main charge trough is opposite to that of the projectile during flight. The main charge trough contains the main charge 5 and the transition charge 4.2 pressed on the main charge 5, thereby making the rotation direction of the main charge 5 opposite to that of the projectile during flight.

[0012] Furthermore, the side of the black powder 2 that contacts the double-base propellant sheet 1 is designed to be an uneven, rough surface.

[0013] Furthermore, the inner wall of the ignition port is provided with a deflector ring 10, and the black powder 2 is located inside the deflector ring 10.

[0014] Furthermore, it also includes casting adhesive 7 and sealing gasket 8. The casting adhesive 7 is applied to the transition drug 4.1 in the central hole and the transition drug 4.2 in the main drug tank, and the sealing gasket 8 is pressed on the casting adhesive (7).

[0015] Furthermore, the outer circumferential wall of the housing 6 is provided with a wrench groove 9.

[0016] Furthermore, the outer circumferential wall of the housing 6 is provided with threads that rotate in the opposite direction to the direction of the projectile's flight.

[0017] Furthermore, the ignition agent 3 is obtained by mixing two specifications of magnesium powder with barium nitrate and barium peroxide in a weight ratio of 3:2:4 and then granulating with phenolic resin. The two specifications of magnesium powder are FM4 and FM5, and the ratio of the two specifications of magnesium powder is 1:1.

[0018] Furthermore, the transition charge 1 4.1 and transition charge 2 4.2 are made by mixing the ignition charge 3 and the main charge 5 in a weight ratio of 1:1.

[0019] Furthermore, the main charge 5 is made by mixing magnesium powder, polyvinyl chloride, strontium nitrate and iron oxide in a weight ratio of 30:8:50:5, and then granulating it with an adhesive.

[0020] The tracer device structure of this utility model has an ignition sequence of black powder, igniter, transition charge, and main charge. The black powder is easier to ignite, which improves the ignition reliability. Furthermore, the black powder is provided with a concave-convex structure on the pressing surface, which increases the ignition area of ​​the black powder and further improves the ignition reliability.

[0021] The present invention relates to a tracer device structure, which adds a propellant-blocking protrusion at the ignition port of the tracer device housing. This reduces the impact of the propellant pressure in the barrel on the propellant surface and prevents the central propellant column from being ejected under high overload during firing.

[0022] The structure of the tracer device of this utility model changes the combustion rotation direction of the main charge, so that the combustion direction is opposite to the rotation direction of the projectile during flight. During the rotation of the projectile, the combustion surface will be eroded rather than peeled off, making it less likely to be thrown out.

[0023] The tracer device structure of this utility model has a layer of transition material laid flat on top of the main charge. Since the transition material is more flammable than the main charge, the transition material is used to drive the main charge to continue burning, making it less likely to experience flameout.

[0024] The present invention relates to a tracer device structure with a wrench groove on the circumferential side of the housing, which makes it easier to use a wrench for clamping and installation, making installation more convenient and reliable.

[0025] This utility model's tracer device structure is used at the base of the shell, providing a stable and reliable tracer effect after the shell is fired. It solves the main problems of unreliable ignition, scattering during flight, and misfiring that are common in traditional tracer devices, and also improves the ease of assembly of the tracer device. Attached Figure Description

[0026] Figure 1 This is a front sectional view of the structure of an embodiment of this utility model.

[0027] Figure 2 This is a schematic diagram of the cardiac drug column structure in an embodiment of this utility model.

[0028] Figure 3 This is a top view of the shell structure of an embodiment of this utility model.

[0029] Figure 4 This is a front cross-sectional view of the shell structure according to an embodiment of this utility model. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this embodiment discloses a tracer device structure, including a cylindrical housing 6 with a vertical axial direction. The housing 6 has a coaxial central hole 6.1 at its center, and a main propellant groove 6.2 that spirals outwards from the central hole 6.1. The starting end of the main propellant groove 6.2 on the side corresponding to the central hole communicates with the corresponding side of the central hole 6.1, and the spiral direction of the main propellant groove 6.2 is opposite to the spiral direction of the projectile during flight. Two symmetrical wrench grooves 9 are respectively provided on the lower part of the outer circumferential wall of the housing 6, and the outer circumferential wall of the housing 6 has threads that spiral in the opposite direction to the spiral direction of the projectile during flight.

[0032] The lower axial end of the central hole 6.1 serves as the ignition port, and a detonator ring 10 is provided on the upper part of the circumferential inner wall of the ignition port. Black powder 2 is loaded into the ignition port within the detonator ring 10. Ignition charge 3 is loaded into the central hole 6.1 above the detonator ring 10, pressing against the top surface of the black powder 2. Transition charge 4.1 is loaded into the central hole 6.1 above the ignition charge 3, pressing against the top surface of the ignition charge 3. A double-base propellant sheet 1 is loaded into the ignition port below the detonator ring 10, adhering tightly to the bottom surface of the black powder 2, which has a rough, uneven surface. The main charge slot 6.2 contains the main charge 5 and transition charge 4.2 pressed against the top surface of the main charge 5.

[0033] The housing 6 also contains casting adhesive 7 and a sealing gasket 8. The casting adhesive 7 is applied to the top surface of the transition agent 4.1 in the central hole and the top surface of the transition agent 4.2 in the main charge tank. The sealing gasket 8 is pressed onto the casting adhesive 7, thereby sealing the interior of the housing 6.

[0034] During product assembly in this embodiment, black powder 2, igniter 3, and a portion of transition charge 4.1 are first loaded into the central hole 6.1 of the housing 6 through the central hole 6.1 above, and compacted with a press under a certain pressure; then the main charge 5 and another portion of transition charge 4.2 are loaded into the main charge slot 6.2 and compacted again under a certain pressure; then the double-base propellant sheet 1 is bonded to the bottom surface of the black powder 2 inside the ignition port with acetone nitrocellulose adhesive; finally, casting adhesive 7 is applied to the top surfaces of transition charge 4.1 and transition charge 4.2, and then the sealing gasket 8 is attached to the casting adhesive 7.

[0035] In this embodiment, the double-base propellant sheet 1 is a double-base sheet propellant for mortar firing charges, which has high flammability. During use, it is bonded to the bottom surface of the black powder 2 at the ignition port with acetone nitrocellulose adhesive to improve the ignition reliability of the product.

[0036] In this embodiment, the black powder 2 has high flammability and is used to receive the propellant flame in the shell's propellant tube and ignite the igniter 3. During the pressing of the black powder 2, its bottom surface is roughened to increase the ignition area. A plastic film is added to the base to further roughen the surface and enhance the ignition reliability of the black powder 2.

[0037] In this embodiment, the igniter 3 is obtained by uniformly mixing two grades of magnesium powder with barium nitrate and barium peroxide in a weight ratio of 3:2:4, and then granulating with phenolic resin. The two grades of magnesium powder are FM4 and FM5, and the ratio of the two grades of magnesium powder is 1:1. The high content of barium peroxide gives the igniter a high combustion speed and heat of combustion.

[0038] Transitional propellant 1 (4.1) and transitional propellant 2 (4.2) are made by mixing igniter 3 and main charge 5 in a weight ratio of 1:1. They serve as transitional components in the combustion sequence and prevent burnout when igniter 3 ignites main charge 5.

[0039] In this embodiment, the main charge 5 is made by mixing magnesium powder, polyvinyl chloride, strontium nitrate, and iron oxide in a weight ratio of 30:8:50:5, and then granulating it using a binder made of 711 resin and 3051 resin. Before granulation, the raw materials of each component of the main charge 5 are dried. After granulation, no further drying is required; the charge is left to stand naturally for 2 hours before being pressed into the shell. The propellant is then cured within the shell, resulting in a stronger core that can withstand the high overload during projectile firing.

[0040] In this embodiment, the casing 6 is cylindrical, and its outer circumferential wall is connected to the tail fuse device using a special M26×1 thread. The thread direction is left-handed, opposite to the rotation direction of the projectile during flight, ensuring that the tracer device will not fall off during firing. A central hole 6.1 is provided in the center of the casing, containing black powder 2, igniter 3, transition charge 1 4.1, and transition charge 2 4.2. A main charge groove 6.2 is located on one side of the central hole, extending outwards from the center. Upon ignition, the propellant in the central hole 6.1 transfers combustion to the main charge 5 and transition charge 2 4.2 in the main charge groove 6.2. The uppermost layer of transition charge 2 4.2 in the main charge groove 6.2 enhances the combustion reliability of the main charge 5. The combustion direction of the propellant in the main charge groove 6.2 is counterclockwise, opposite to the rotation direction of the projectile. During the projectile's rotation, the burning surface will experience erosion rather than peeling, making it less likely for the burning surface to be ejected. A propellant-blocking ring 10 is installed inside the ignition port of the center hole 6.1, which reduces the impact of the propellant pressure in the barrel on the ignition propellant surface and can prevent the center propellant column of the ignition port 6.1 from being ejected under high overload.

[0041] In this embodiment, the casting adhesive 7 has high strength and heat resistance, and is used to bond the sealing gasket. It can maintain the integrity of the structure during the combustion of the transition drug and the basic drug in the shell. With the assistance of the sealing gasket, it avoids the phenomenon of flame spread on the combustion surface, and ensures the stable combustion of the basic drug to meet the requirements of the product's luminescence time.

[0042] In this embodiment, the sealing gasket 8 is made of asbestos, which has high heat resistance and a certain degree of plasticity. When assembled into the tail of the projectile, it can fully cooperate and contact with the bottom structure of the projectile under pressure, so that the tracer device will not be displaced under high overload in the gun barrel, and can maintain the integrity of the structure during the combustion of the transition propellant and the basic propellant.

[0043] In this embodiment, the wrench groove 9 is easier to use with a wrench for installation compared to the wrench hole, making installation more convenient and reliable.

[0044] The preferred embodiments of this utility model have been described in detail above with reference to the accompanying drawings. These embodiments are merely descriptions of preferred embodiments and are not intended to limit the concept and scope of this utility model. The various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. Such combinations, as long as they do not violate the spirit of this utility model, should also be considered as part of this disclosure. To avoid unnecessary repetition, this utility model will not further describe all possible combinations.

[0045] This utility model is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this utility model and without departing from the design idea of ​​this utility model, all modifications and improvements made by those skilled in the art to the technical solution of this utility model should fall within the protection scope of this utility model. The technical content for which protection is sought in this utility model has been fully recorded in the claims.

Claims

1. A tracer device structure comprising a housing (6) having a central hole inside, and a main charge groove spirally wound outside the central hole from a side of the central hole, and a starting end of the main charge groove being communicated with a corresponding side of the central hole, characterized in that, The center hole axial one end orifice as ignition port, ignition port in the black powder (2) is equipped with, the center hole is equipped with the ignition powder (3) pressed on the black powder (2), the transition medicine (4.1) pressed on the ignition powder (3), the ignition port is equipped with the double-base propellant sheet (1) closely attached to the black powder (2), and the black powder (2) is compacted in the ignition powder (3) by the double-base propellant sheet (1); The main charge slot is opposite to the rotation direction of the shell flight, and the main charge (5) is equipped in the main charge slot, and the transition medicine (4.2) is pressed on the main charge (5), so that the rotation direction of the main charge (5) is opposite to the rotation direction of the shell flight.

2. A tracer device structure according to claim 1, wherein The side of the black powder (2) in contact with the double-base propellant sheet (1) is provided with a rough surface.

3. A tracer device structure according to claim 1, wherein The ignition port circumferential inner wall is provided with a medicine blocking convex ring (10), and the black powder (2) is located in the medicine blocking convex ring (10).

4. The tracer device structure of claim 1, wherein It also includes a foundry glue (7) and a sealing gasket (8), the foundry glue (7) is coated on the transition medicine (4.1) in the center hole and the transition medicine (2) in the main charge slot, and the sealing gasket (8) is pressed on the foundry glue (7).

5. The tracer device structure of claim 1, wherein The circumferential outer wall of the shell (6) is provided with a wrench groove (9).

6. A tracer device structure according to claim 1, wherein The circumferential outer wall of the shell (6) is provided with a thread opposite to the rotation direction of the shell flight.

7. A tracer device structure according to any one of claims 1 to 6, wherein The ignition powder (3) is obtained by mixing two specifications of magnesium powder and barium nitrate, barium peroxide in a weight ratio of 3:2:4, and then granulating with phenolic resin, the two specifications of magnesium powder are FM4 and FM5, and the proportion of the two specifications of magnesium powder is 1:

1.

8. A tracer device structure according to any one of claims 1 to 6, wherein The transition medicine (4.1) and the transition medicine (4.2) are prepared by mixing the ignition powder (3) and the main charge (5) in a weight ratio of 1:

1.

9. A tracer device structure according to any one of claims 1-6, characterized in that The main charge (5) is prepared by mixing magnesium powder, polyvinyl chloride, strontium nitrate and iron oxide in a weight ratio of 30:8:50:5, and then granulating with an adhesive.

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