A pancake coil and solenoid combined driven two-stage accelerating electromagnetic coil gun

Abstract

The application discloses a kind of pie-shaped coil and solenoid combined drive's two-stage acceleration electromagnetic coil gun, including coil gun mechanical device and for controlling the control system of coil gun mechanical device, the coil gun mechanical device includes cannon barrel solid section, pie-shaped coil, solenoid, laser shot type photoelectric sensor, for installing the cannon barrel hollow section and base assembly of bearing cannonball, the control system includes charging circuit, trigger circuit and discharge circuit, the pie-shaped coil realizes to cannonball armature first stage acceleration, the solenoid realizes to cannonball armature second stage acceleration.The application can realize to electromagnetic gun multistage acceleration launch drive.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic gun firing, and particularly relates to a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid. Background Technology

[0002] Since the 20th century, research on electromagnetic railguns has increased significantly. As a novel launching device distinct from artillery and air guns, electromagnetic railguns offer numerous advantages, including safety, high controllability, and environmental friendliness. They are primarily used in the military field, including impact testing and firefighting. Based on their launching principles, electromagnetic railguns can be categorized into railguns, reconnecting railguns, and coilguns. Railgun research is relatively mature, but the armature and rails experience severe wear during firing, leading to reduced electromagnetic energy conversion efficiency and significantly impacting the launcher's lifespan. Reconnecting railguns, due to their complex principles, are still in their early stages and cannot yet be practically applied in engineering. Therefore, most research on electromagnetic railguns focuses on coilguns. Based on the number of driving coil stages, coilguns can be divided into single-stage accelerating coilguns and multi-stage accelerating coilguns; the former is used for low-speed firing, while the latter is used for high-speed firing. Currently, solenoids are commonly used as driving coils in coilguns both domestically and internationally. However, because solenoids require air as a medium to conduct the magnetic field, this severely weakens the electromagnetic force on the armature. Therefore, although the energy conversion efficiency of traditional coilguns is higher than that of railguns, it remains relatively low. Summary of the Invention

[0003] To address this problem, this invention proposes a two-stage accelerating electromagnetic coil gun driven by a combination of a disc coil and a solenoid. This invention employs a combination of two driving coils with different structures, using the disc coil, which has higher energy conversion efficiency, as the first-stage accelerating driving coil. After the armature and projectile have achieved sufficient velocity, a solenoid is then used for subsequent acceleration. This significantly improves the electromagnetic energy conversion efficiency, enabling the projectile to obtain higher kinetic energy with lower electromagnetic energy.

[0004] To achieve the above objectives, the present invention proposes the following technical solution:

[0005] A two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid includes a coil gun mechanical device and a control system for controlling the coil gun mechanical device. The coil gun mechanical device includes a barrel assembly and a base assembly, and the barrel assembly is mounted on the base assembly.

[0006] The barrel assembly includes a solid barrel section, a disc-shaped coil, a solenoid, a laser-guided photoelectric sensor, and a hollow barrel section for mounting and carrying projectiles.

[0007] The hollow section of the barrel is connected to the solid section of the barrel. The disc-shaped coil is installed at the end of the hollow section of the barrel that is close to the solid section of the barrel. The solenoid and the laser-guided photoelectric sensor are both installed at the end of the hollow section of the barrel that is away from the solid section of the barrel.

[0008] The control system includes a charging circuit, a triggering circuit, and a discharging circuit. The charging circuit is connected to the charging port of the energy storage capacitor, the discharging circuit is connected to the discharging port of the energy storage capacitor, and the triggering circuit includes a manual triggering circuit and an automatic triggering circuit.

[0009] After the charging circuit stores electrical energy in the energy storage capacitor, the manual triggering circuit is manually closed, allowing a strong current to flow through the disc coil. A pulsed magnetic field is generated around the disc coil, which accelerates the projectile armature in the first stage.

[0010] When the projectile's warhead blocks the laser beam of the laser-guided photoelectric sensor, the automatic triggering circuit closes, causing a strong current to flow through the solenoid. A pulsed magnetic field is generated around the solenoid, which accelerates the projectile's armature in the second stage.

[0011] Preferably, the discharge circuit includes a primary acceleration discharge circuit and a secondary acceleration discharge circuit. The primary acceleration discharge circuit is used to generate a pulsed magnetic field around the disc coil to accelerate the projectile armature in the first stage. The secondary acceleration discharge circuit is used to generate a pulsed magnetic field around the solenoid to accelerate the projectile armature in the second stage.

[0012] Preferably, the first-stage accelerated discharge circuit includes an energy storage capacitor, a first thyristor, a disc coil, and a resistive element;

[0013] When the manual trigger circuit is closed, the discharge signal is transmitted to the first thyristor, which turns on the first-stage acceleration discharge circuit. The energy storage capacitor releases electrical energy from the discharge port, causing a strong current to flow through the disc coil and the resistive element, thereby generating a pulsed magnetic field around the disc coil to accelerate the projectile armature in the first stage.

[0014] Preferably, the secondary accelerated discharge circuit includes an energy storage capacitor, a second thyristor, a solenoid, and a resistive element;

[0015] When the projectile's warhead blocks the laser beam of the laser-guided photoelectric sensor, the automatic triggering circuit closes, and the discharge signal is transmitted to the second thyristor. The second thyristor then conducts the secondary acceleration discharge circuit, and the energy storage capacitor releases electrical energy from the discharge port, causing a strong current to flow through the solenoid and the resistive element, thereby generating a pulsed magnetic field around the solenoid and accelerating the projectile's armature in the second stage.

[0016] Preferably, the projectile armature is a combined armature, which includes a primary armature and a secondary armature. The secondary armature is the tail of the projectile and is made of steel. The primary armature is connected to the tail of the secondary armature and is made of aluminum alloy.

[0017] Preferably, the disc-shaped coil is wrapped around the hollow section of the barrel, and a cable groove for laying cables is opened on the outer surface of the wrapped area, and a clamp for fixing the cables is provided above the cable groove.

[0018] Preferably, two pairs of sensor fixing plates are symmetrically welded to the surface of the hollow section of the barrel, the solenoid is located between the two pairs of sensor fixing plates, and the laser through-beam photoelectric sensor is fixedly installed on the sensor fixing plates.

[0019] Preferably, the solenoid includes a solenoid inner cylinder, a wire, and a clamping plate, wherein the wire is wound around the surface of the solenoid inner cylinder, and the wire is fixed to the solenoid inner cylinder by the clamping plate.

[0020] Preferably, the base assembly includes a pitch adjustment structure and a rotation structure. The pitch adjustment mechanism is fixedly installed on the rotation mechanism. The pitch adjustment structure is used to control the pitch angle of the cannon shell, and the rotation structure is used to control the horizontal angle of the cannon shell in 360°.

[0021] Preferably, the rotating structure includes a rotating disk and a base, wherein the rotating disk is rotatably connected to the base;

[0022] The pitch adjustment structure includes an adjustment frame and a support base. The support base is fixedly connected to the base. The adjustment frame adopts a worm gear mechanism. When working, the worm drives the meshing worm gear to rotate in the opposite direction.

[0023] The adjustment frame is hinged to the hollow section of the barrel, and the support base is hinged to the solid section of the barrel.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] 1) Using a disc coil with higher energy conversion efficiency as the first-stage drive coil can effectively improve the overall energy conversion efficiency of the coil gun, enabling the projectile to achieve higher speed with lower electrical energy input.

[0026] 2) Compared to using mechanical or air-launched methods to give the projectile initial velocity, the advantage of using a disc coil is that the entire device operates in an electromagnetic environment, resulting in higher stability, stronger controllability, and effective prevention of mutual interference between the electromagnetic device and mechanical or air-launched devices.

[0027] 3) The armature adopts an aluminum alloy-steel composite armature, that is, a combination of a magnetically conductive armature and a non-magnetically conductive armature. The aluminum alloy armature is used as the armature of the disc coil, and the steel armature is used as the armature of the solenoid. After the solenoid generates a pulsed magnetic field, while further accelerating the steel armature and the projectile, it will also push the aluminum alloy armature back to prevent the aluminum alloy armature from interfering with the subsequent acceleration.

[0028] 4) This invention proposes a novel structure and acceleration method for a multi-stage accelerating coil gun. Although it is only a two-stage acceleration, the structure of each stage of coil and circuit, as well as the coordination between each stage, have been clearly defined. Using the same structure, it can be extended to a three-stage acceleration, a four-stage acceleration, or even more stages of acceleration. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention.

[0031] Figure 2 This is a schematic diagram of the barrel assembly structure of a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention.

[0032] Figure 3 This is a schematic diagram of the solenoid structure in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention.

[0033] Figure 4 This is a wiring diagram of a laser beam sensor in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid, according to the present invention.

[0034] Figure 5 This is a schematic diagram of the first-stage acceleration principle of the projectile armature in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid, according to the present invention.

[0035] Figure 6 This is a schematic diagram of the second-stage acceleration principle of the projectile armature in a gun, which is driven by a disc-shaped coil and a solenoid in combination according to the present invention.

[0036] Figure 7 This is a schematic diagram of the combined armature in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention.

[0037] In the diagram: 1. Rotary disk, 2. Base, 3. Adjustment frame, 4. Pin, 5. Support seat, 7. Solid barrel seat, 11. Sensor fixing plate, 13. Hollow section of barrel, 14. Solenoid, 15. Disc coil, 16. Inner cylinder of solenoid, 17. Wire, 18. Clamping plate, 20. Laser through-beam photoelectric sensor, 21. Cable trough, 22. Clamp, 23. Primary armature, 24. Secondary armature, 25. First thyristor, 26. Second thyristor. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Please refer to the following: Figures 1-7 ,in, Figure 1 This is a schematic diagram of the overall structure of a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention. Figure 2 This is a schematic diagram of the barrel assembly structure of a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention. Figure 3 This is a schematic diagram of the solenoid structure in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention. Figure 4 This is a wiring diagram of a laser beam sensor in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid, according to the present invention. Figure 5 This is a schematic diagram of the first-stage acceleration principle of the projectile armature in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid, according to the present invention. Figure 6 This is a schematic diagram of the second-stage acceleration principle of the projectile armature in a gun, which is driven by a disc-shaped coil and a solenoid in combination according to the present invention. Figure 7 This is a schematic diagram of the combined armature in a two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to the present invention.

[0045] A two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid includes a coil gun mechanical device and a control system for controlling the coil gun mechanical device. The coil gun mechanical device includes a barrel assembly and a base assembly, with the barrel assembly mounted on the base assembly.

[0046] The barrel assembly includes a solid barrel section 7, a disc coil 15, a solenoid 14, a laser-guided photoelectric sensor 20, and a hollow barrel section 13 for mounting and carrying projectiles.

[0047] The hollow section 13 of the barrel is connected to the solid section 7 of the barrel. The disc-shaped coil 15 is installed at one end of the hollow section 13 of the barrel near the solid section 7 of the barrel. The solenoid 14 and the laser through-beam photoelectric sensor 20 are both installed at the end of the hollow section 13 of the barrel away from the solid section 7 of the barrel.

[0048] In actual use, the hollow section 13 of the barrel is divided into a barrel section with a disc-shaped coil 15 installed, a barrel transition section, and a barrel section with a solenoid 14 and a laser-type photoelectric sensor 20 installed.

[0049] The control system includes a charging circuit, a triggering circuit, and a discharging circuit. The charging circuit is connected to the charging port of the energy storage capacitor, the discharging circuit is connected to the discharging port of the energy storage capacitor, and the triggering circuit includes a manual triggering circuit and an automatic triggering circuit.

[0050] After the charging circuit stores electrical energy in the energy storage capacitor, the manual triggering circuit is manually closed, so that a strong current flows through the disc coil 15, and a pulsed magnetic field is generated around the disc coil 15 to accelerate the projectile armature in the first stage.

[0051] When the projectile's warhead blocks the laser beam of the laser-guided photoelectric sensor 15, the automatic trigger circuit closes, causing a strong current to flow through the solenoid 14. A pulsed magnetic field is generated around the solenoid 14, which accelerates the projectile's armature in the second stage.

[0052] In actual use, the charging port of the energy storage capacitor is connected to an external power source through a charging circuit. When the coilgun is working, the charging voltage is set and the charging circuit is connected, and the external power source can begin charging the energy storage capacitor. After reaching the predetermined voltage, the charging circuit automatically disconnects. At this point, the electrical energy required for the shell to fire has been completely stored in the energy storage capacitor. Then, the triggering circuit is connected at the appropriate time (first stage manual triggering, second stage automatic triggering).

[0053] The discharge circuit includes a primary acceleration discharge circuit and a secondary acceleration discharge circuit. The primary acceleration discharge circuit is used to generate a pulsed magnetic field around the disc coil 15 to accelerate the projectile armature in the first stage. The secondary acceleration discharge circuit is used to generate a pulsed magnetic field around the solenoid 14 to accelerate the projectile armature in the second stage.

[0054] The first-stage accelerated discharge circuit includes an energy storage capacitor, a first thyristor 25, a disc coil 15, and a resistive element. When the manual trigger circuit is closed, the discharge signal is transmitted to the first thyristor 25, which conducts the first-stage accelerated discharge circuit. The energy storage capacitor releases electrical energy from the discharge port, causing a strong current to flow through the disc coil 15 and the resistive element, thereby generating a pulsed magnetic field around the disc coil 15, which accelerates the projectile armature in the first stage.

[0055] In practical use, since the initial positions of the armature and the projectile are fixed and the initial velocity is zero, there is no precise requirement for the timing of the discharge. The trigger circuit is activated manually via a button. Furthermore, since the drive coil for the first-stage acceleration is a disc-shaped coil 15, which can only be used to repel non-magnetic armatures, an aluminum alloy armature is chosen for the first-stage acceleration. When the pulsed magnetic field is generated, an eddy current magnetic field is induced inside the armature. The direction of this eddy current magnetic field is opposite to that of the pulsed magnetic field. The two magnetic fields repel each other, generating an electromagnetic repulsion force between the disc-shaped coil 15 and the armature, pushing the armature forward. The armature then propels the projectile forward, achieving the first stage of acceleration for the projectile.

[0056] The secondary acceleration discharge circuit includes an energy storage capacitor, a second thyristor 26, a solenoid 14, and a resistive element. When the projectile's warhead blocks the laser beam of the laser-guided photoelectric sensor 20, the circuit is automatically triggered to close, and the discharge signal is transmitted to the second thyristor 26, which conducts the secondary acceleration discharge circuit. The energy storage capacitor releases electrical energy from the discharge port, causing a strong current to flow through the solenoid 14 and the resistive element, thereby generating a pulsed magnetic field around the solenoid 14, which accelerates the projectile armature in the second stage.

[0057] In practical use, because the armature and the projectile are in a state of rapid motion at the moment of discharge, the accuracy requirement for the timing of discharge is very high. Therefore, manual button triggering is not suitable, and automatic triggering is selected. When the projectile's warhead blocks the laser beam of the laser beam sensor 20, the trigger circuit closes, and the energy storage capacitor releases electrical energy. The drive coil for the second-stage acceleration is a solenoid 14, which can be used to attract a magnetic armature or repel a non-magnetic armature. However, since the energy conversion efficiency of the solenoid 14 in attracting a magnetic armature is higher than that in repelling a non-magnetic armature, a steel armature is selected for the second-stage acceleration. When the pulsed magnetic field is generated, the magnetic field directly attracts the steel armature, and the armature drives the projectile through the inside of the solenoid 14, realizing the second-stage acceleration of the projectile.

[0058] The projectile armature adopts a combined armature, which includes a primary armature 23 and a secondary armature 24. The secondary armature 24 is the tail of the projectile and is made of steel. The primary armature 23 is connected to the tail of the secondary armature 24 and is made of aluminum alloy.

[0059] In actual use, when the first-stage circuit discharges, the disc coil 15 generates an electromagnetic repulsion force on the aluminum alloy armature, i.e., the primary armature 23, pushing the primary armature and the projectile out together. When the second-stage circuit discharges, the solenoid 14 generates an electromagnetic repulsion force on the primary armature, pushing it back, and generates an electromagnetic attraction force on the steel armature, i.e., the secondary armature 24, further accelerating the projectile. At the same time, it separates the projectile from the primary armature, preventing the primary armature from interfering with subsequent acceleration.

[0060] A disc-shaped coil 15 is wrapped around the hollow section 13 of the barrel, and a cable groove 21 for laying cables is opened on the outer surface of the wrapped part. A clamp 22 for fixing cables is provided above the cable groove 21.

[0061] In practical use, the disc coil 15 serves as the first-stage drive coil, which can effectively improve the overall energy conversion efficiency of the coil gun, resulting in higher stability and stronger controllability. It can also effectively prevent electromagnetic equipment from interfering with mechanical or air-launched equipment, enabling the projectile to achieve higher speeds with lower electrical energy input.

[0062] In addition, to demonstrate that the energy conversion efficiency of this invention is higher than that of conventional multi-stage accelerating coil guns, the following data is provided:

[0063] 1) Comparison of the efficiency of solenoids repelling non-magnetic armatures and attracting magnetic armatures.

[0064] A small projectile launching experiment was conducted using a simple solenoid. Iron and aluminum projectiles of similar mass were selected. Under the same circuit parameters and discharge voltage, the average velocity of the projectile after leaving the barrel was measured using a high-speed camera. The experimental results are shown in Table 1.

[0065] Projectile mass (g) Muzzle velocity (m / s) Iron projectile 11.9 13.4 Aluminum projectile 10.2 0.31

[0066] Table 1 Comparison Experiments of Armatures Made of Different Materials

[0067] Data shows that the attraction of a solenoid to a magnetically conductive metal is much greater than its repulsion to a non-magnetically conductive metal. Therefore, the solenoid scheme that attracts a magnetically conductive armature is superior to the traditional coil gun scheme that repels a non-magnetically conductive armature.

[0068] 2) Efficiency comparison between disc coils and solenoids

[0069] Armature firing experiments were conducted using a disc coil and a solenoid, respectively. The two coils had the same cross-sectional area, and the armatures were selected from aluminum and iron armatures with similar masses. The experimental results are shown in Table 2.

[0070] Armature material Armature mass (g) Muzzle velocity (m / s) Doughnut coil 7075 aluminum alloy 462 19.28 Solenoid 45 steel 470 10.60

[0071] Table 2 Comparison Experiments with Different Driving Coils

[0072] Data shows that the repulsive effect of the disc coil on the non-magnetic armature is significantly stronger than the attractive effect of the solenoid on the magnetic armature. Combined with the conclusions in Table 1, it is also stronger than the repulsive effect of the solenoid on the non-magnetic armature. Therefore, the scheme of using the disc coil as the first-stage drive coil is better than the traditional coilgun scheme that only uses a solenoid.

[0073] Two pairs of sensor mounting plates 11 are symmetrically welded to the surface of the hollow section 13 of the barrel. The solenoid 14 is located between the two pairs of sensor mounting plates 11. The laser through-beam photoelectric sensor 20 is fixedly installed on the sensor mounting plates 11.

[0074] In actual use, the laser-guided sensor near the transition section of the barrel is used to launch short and small projectiles, while the laser-guided sensor at the breech end of the barrel is used to launch long and slender projectiles.

[0075] The solenoid 14 includes a solenoid inner cylinder 16, a wire 17, and a clamping plate 18. The wire 17 is wound around the surface of the solenoid inner cylinder 16, and the wire 17 is fixed to the solenoid inner cylinder 16 by the clamping plate 18.

[0076] The base assembly includes a pitch adjustment structure and a rotation structure. The pitch adjustment mechanism is fixedly mounted on the rotation mechanism. The pitch adjustment structure is used to control the pitch angle of the cannon shell, and the rotation structure is used to control the horizontal angle of the cannon shell in 360°.

[0077] The rotating structure includes a rotating disk 1 and a base 2, with the rotating disk 1 and the base 2 being rotatably connected.

[0078] The pitch adjustment structure includes an adjustment frame 3 and a support base 5. The support base 5 is fixedly connected to the base 2. The adjustment frame 3 adopts a worm gear mechanism. When working, the worm drives the worm gear meshing with it to rotate in the opposite direction.

[0079] The adjusting frame 3 is hinged to the hollow section 13 of the barrel, and the support base 5 is hinged to the solid section 7 of the barrel.

[0080] In actual use, the adjusting frame 3 adopts a worm gear mechanism. The worm is fixed on the support base 5, the worm gear meshes with the worm, and the worm gear is connected to a figure-eight support frame. When the gun barrel is adjusted downward, the figure-eight support frame drives the worm gear to move to both sides on the worm. When the gun barrel is adjusted upward, the figure-eight support frame drives the worm gear to move inward on the worm.

[0081] The working process of this invention, a two-stage accelerating electromagnetic coil gun driven by a combination of a disc coil and a solenoid, is as follows:

[0082] 1) Install the armature and the projectile.

[0083] 2) Adjust the horizontal and vertical angles of the gun barrel.

[0084] 3) Charge the energy storage capacitor of the two-stage coil charging circuit through an external power supply.

[0085] 4) Once charging is complete and everything is ready, press the trigger switch of the disc coil trigger circuit.

[0086] 5) The electrical energy of the first-stage circuit is released, generating a pulsed magnetic field around the disc coil, which drives the armature and the projectile to move forward along the barrel.

[0087] 6) When the projectile's foremost tip blocks the sensor's laser beam, the solenoid's trigger circuit is activated, releasing the electrical energy of the second-stage circuit and generating a pulsed magnetic field inside the solenoid, further accelerating the armature and the projectile.

[0088] The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the present invention are within the protection scope of the present invention.

Claims

1. A two-stage accelerating electromagnetic coil gun driven by a combination of a disc-shaped coil and a solenoid, characterized in that: The invention includes a coilgun mechanical device and a control system for controlling the coilgun mechanical device. The coilgun mechanical device includes a barrel assembly and a base assembly, wherein the barrel assembly is mounted on the base assembly. The barrel assembly includes a solid barrel section (7), a disc coil (15), a solenoid (14), a laser-guided photoelectric sensor (20), and a hollow barrel section (13) for mounting the shell. The hollow section (13) of the barrel is connected to the solid section (7) of the barrel. The disc coil (15) is installed at the end of the hollow section (13) of the barrel that is close to the solid section (7) of the barrel. The solenoid (14) and the laser-guided photoelectric sensor (20) are both installed at the end of the hollow section (13) of the barrel that is away from the solid section (7) of the barrel. The control system includes a charging circuit, a triggering circuit, and a discharging circuit. The charging circuit is connected to the charging port of the energy storage capacitor, the discharging circuit is connected to the discharging port of the energy storage capacitor, and the triggering circuit includes a manual triggering circuit and an automatic triggering circuit. After the charging circuit stores electrical energy in the energy storage capacitor, the manual triggering circuit is manually closed, so that a strong current flows through the disc coil (15). A pulsed magnetic field is generated around the disc coil (15) to accelerate the projectile armature in the first stage. When the projectile's warhead blocks the laser beam of the laser beam-type photoelectric sensor (20), the automatic triggering circuit closes, causing a strong current to flow through the solenoid (14), generating a pulsed magnetic field around the solenoid (14) to accelerate the projectile's armature in the second stage. The projectile armature is a combined armature, which includes a primary armature (23) and a secondary armature (24). The secondary armature (24) is the tail of the projectile and is made of steel. The primary armature (23) is connected to the tail of the secondary armature (24) and is made of aluminum alloy. The primary armature (23) is used as the armature of the disc coil, and the secondary armature (24) is used as the armature of the solenoid. During the second-stage acceleration process, the solenoid (14) generates an electromagnetic repulsion force on the primary armature (23) and an electromagnetic attraction force on the secondary armature (24), which further accelerates the projectile and separates the projectile from the primary armature (23).

2. The two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 1, characterized in that: The discharge circuit includes a primary acceleration discharge circuit and a secondary acceleration discharge circuit. The primary acceleration discharge circuit is used to generate a pulsed magnetic field around the disc coil (15) to accelerate the projectile armature in the first stage. The secondary acceleration discharge circuit is used to generate a pulsed magnetic field around the solenoid (14) to accelerate the projectile armature in the second stage.

3. The two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 2, characterized in that: The first-stage accelerated discharge circuit includes an energy storage capacitor, a first thyristor (25), a disc coil (15), and a resistive element; When the manual trigger circuit is closed, the discharge signal is transmitted to the first thyristor (25), the first thyristor (25) conducts the first-stage acceleration discharge circuit, the energy storage capacitor releases electrical energy from the discharge port, and the strong current flows through the disc coil (15) and the resistive element, thereby generating a pulse magnetic field around the disc coil (15) to accelerate the projectile armature in the first stage.

4. The two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 2, characterized in that: The secondary accelerated discharge circuit includes an energy storage capacitor, a second thyristor (26), a solenoid (14), and a resistive element; When the projectile's warhead blocks the laser beam of the laser-guided photoelectric sensor (20), the automatic triggering circuit closes, and the discharge signal is transmitted to the second thyristor (26). The second thyristor (26) conducts the secondary acceleration discharge circuit, and the energy storage capacitor releases electrical energy from the discharge port, causing a strong current to flow through the solenoid (14) and the resistive element, thereby generating a pulsed magnetic field around the solenoid (14) to accelerate the projectile armature in the second stage.

5. The two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 1, characterized in that: The disc-shaped coil (15) is wrapped in the hollow section (13) of the barrel, and a cable groove (21) for laying cables is opened on the outer surface of the wrapped part. A clamp (22) for fixing the cable is provided above the cable groove (21).

6. The two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 1, characterized in that: Two pairs of sensor fixing plates (11) are symmetrically welded to the surface of the hollow section (13) of the barrel. The solenoid (14) is located between the two pairs of sensor fixing plates (11). The laser through-beam photoelectric sensor (20) is fixedly installed on the sensor fixing plate (11).

7. The two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 1, characterized in that: The solenoid (14) includes a solenoid inner cylinder (16), a wire (17) and a clamping plate (18). The wire (17) is wound around the surface of the solenoid inner cylinder (16), and the wire (17) is fixed to the solenoid inner cylinder (16) by the clamping plate (18).

8. The two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 1, characterized in that: The base assembly includes a pitch adjustment structure and a rotation structure. The pitch adjustment structure is fixedly installed on the rotation structure. The pitch adjustment structure is used to control the pitch angle of the cannon shell, and the rotation structure is used to control the horizontal angle of the cannon shell in 360°.

9. A two-stage accelerating electromagnetic coil gun driven by a disc-shaped coil and a solenoid according to claim 8, characterized in that: The rotating structure includes a rotating disk (1) and a base (2), wherein the rotating disk (1) and the base (2) are rotatably connected; The pitch adjustment structure includes an adjustment frame (3) and a support base (5). The support base (5) is fixedly connected to the base (2). The adjustment frame (3) adopts a worm gear mechanism. When working, the worm drives the worm gear meshing with it to rotate in the opposite direction. The adjustment frame (3) is hinged to the hollow section (13) of the barrel, and the support base (5) is hinged to the solid section (7) of the barrel.

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