Negative pressure environment air cannon launcher system

Abstract

The application discloses a kind of negative pressure environment air cannon launcher systems, cross medium launcher includes cannon barrel and gas holder, cannon barrel rear end passes through gas holder, cannon barrel is equipped with shell support, shell support is equipped with guide belt and multiple sliding seals, cannon barrel in gas holder is opened with air hole, the end of cannon barrel rear end is fixed with bottom plate, bottom plate and shell support are equipped with launch chamber, bottom plate is opened with the air guide hole of communication gas holder and launch chamber, gas holder is inflated to guide belt by air hole before launching and is communicated launch chamber by air hole after launching, the inner wall of cannon barrel is equipped with guide groove.Compared with prior art, the guide function of the anti-rotation mechanism of the present application is only activated after launching, and is not activated at other times, causing less damage to the cannon barrel. Furthermore, due to the flexible contact, the damage to the cannon barrel can be further reduced. The gas holder can complete energy storage for the guide belt through the air hole before launching, and can also communicate with the launch chamber through the air hole after launching, which can significantly improve the launching speed of the projectile.

Description

Technical Field

[0001] This invention relates to the field of air cannon launching technology, and more specifically to a negative pressure environment air cannon launching system. Background Technology

[0002] The negative pressure cross-medium high-speed water launcher is a launcher that can be used in a negative pressure environment. As a specialized negative pressure high-overload simulation device, it has many advantages. It uses compressed high-pressure air to propel the test projectile forward to a certain speed, thus launching the test projectile. Compared with traditional artillery, air cannons have the advantages of clean and reliable energy sources. Furthermore, they offer a wide range of initial velocities for the test projectiles, good adjustability, and the ability to launch test projectiles of various shapes and materials. The test projectiles are highly adaptable, continuously adjustable, and exhibit good test repeatability. However, existing air cannon launcher systems use two different mechanisms for projectile launch and anti-rotation, which does not provide a significant enhancement effect.

[0003] Therefore, it is necessary to provide a new negative pressure ambient air gun launcher system to solve the above-mentioned technical problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by disclosing a negative pressure ambient air gun launcher system, which solves the problem that the projectile launching and anti-rotation functions of the prior art are handled by two different mechanisms.

[0005] The technical solution adopted by this invention to solve its technical problem is: a negative pressure ambient air gun launcher system, including a launching platform, a chamber provided on the launching platform, a cross-medium launcher and a water tank provided in the chamber, the water tank being located below the cross-medium launcher, an air compressor, a hydraulic press and an electrical control box being provided outside the chamber, the cross-medium launcher being connected to the air compressor, the hydraulic press and the electrical control box respectively through pipelines, the cross-medium launcher including a gun barrel and an air tank, the rear end of the gun barrel passing through the air tank, a projectile sabot provided inside the gun barrel, the projectile sabot having a guide belt and multiple sliding seals, one of the sliding seals being located behind the guide belt, the gun barrel inside the air tank having a vent hole, a base plate fixed to the rear end of the gun barrel, a launching chamber being provided between the base plate and the projectile sabot, the base plate having a vent hole connecting the air tank and the launching chamber, the air tank being inflated to the guide belt through the vent hole before launching and connected to the launching chamber through the vent hole after launching, the inner wall of the gun barrel having a guide groove.

[0006] Preferably, a fastener is fixed on the base plate, and the fastener is detachably connected to the projectile.

[0007] Preferably, the sliding seal includes a sealing ring and at least two slip rings, with the sealing ring disposed between the two slip rings.

[0008] Preferably, the fastener includes a fixing rod, and the fixing rod is interference-fitted with the rear end of the projectile.

[0009] Preferably, the fastener further includes a first fixing post fixed to the base plate, the first fixing post being hinged to the fixing rod.

[0010] Preferably, the transmedium transmitter further includes: an air tube, a piston, a piston rod, a cylinder, and a sealing disc. The air tube is connected to a gas storage tank via a one-way valve. The piston is slidably disposed within the cylinder. One end of the piston rod is fixed to the piston, and the other end is fixedly connected to the sealing disc. The sealing disc is used to control the opening and closing of the pipeline between the gas storage tank and the launch chamber. The piston divides the cylinder into a rodless chamber and a rod chamber, and the air tube is connected to the rodless chamber.

[0011] Preferably, the pipeline between the gas storage tank and the launch chamber is divided into a first branch pipe and a second branch pipe, and the cylinder body is connected to a third branch pipe at the rod chamber. The third branch pipe is connected to the second branch pipe, and the sealing disc is used to control the connection between the first branch pipe and the rod chamber.

[0012] Preferably, a support plate is fixed inside the cylinder, and the piston rod passes through the support plate.

[0013] Preferably, a measuring tube is fixed to the front end of the gun barrel, and a projectile velocity measuring device is provided on the measuring tube.

[0014] Preferably, the cross-medium launcher further includes a loading platform and a support. The gun barrel and the gas tank are both fixed on the support. The support is hinged to the loading platform. A hydraulic cylinder is provided between the loading platform and the support. The two ends of the hydraulic cylinder are respectively hinged to the loading platform and the support.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] In this invention, before firing, compressed air from the gas tank enters the guide belt through the vent, increasing the air pressure on the guide belt. When it encounters the guide groove, the guide belt expands and embeds itself into the groove, preventing the sabot from rotating, i.e., preventing the projectile from rotating inside the barrel. After firing, when the tail of the sabot moves to the vent, compressed air can directly enter the firing chamber through the vent, propelling the sabot forward. This additional compressed air provides more thrust to the sabot, further increasing the projectile's firing velocity. The more vents there are, the more compressed air enters the firing chamber, providing even more thrust to the sabot. In this structure, the guide belt and the barrel have flexible contact, resulting in low friction and minimal damage to the barrel. The sabot is not guided when returning from the front end to the rear end mounting position of the barrel, further reducing the damage to the barrel. The negative pressure environment air gun launcher system provided by this invention has an anti-rotation mechanism whose guiding function is activated only after firing and not under normal conditions, minimizing damage to the barrel. Furthermore, the flexible contact further reduces damage to the barrel. After the gas tank stores energy in the guide belt before launch through the vent, it can also connect to the launch chamber through the vent after launch, which can significantly increase the launch speed of the projectile. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure for removing the compartment according to the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the present invention with the compartment and launch platform removed;

[0020] Figure 4 This is a partial cross-sectional schematic diagram of the transmedium transmitter of the present invention;

[0021] Figure 5 This is a schematic diagram of the barrel structure of the present invention;

[0022] Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point A;

[0023] Figure 7 This is a partial structural schematic diagram of the transmedium transmitter of the present invention;

[0024] Figure 8 This is a schematic diagram of the projectile velocity measuring device of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Launch platform, 2. Compartment, 3. Transmedium launcher, 4. Water tank, 5. Air compressor, 6. Hydraulic press, 7. Electrical control box, 8. Pipeline, 9. Loading platform, 31. Gun barrel, 311. Vent hole, 312. Guide groove, 32. Gas tank, 33. Missile sabot, 34. Guide belt, 35. Sliding seal, 351. Sealing ring, 352. Slip ring, 36. Base plate, 361. Vent hole, 37. Fastener, 371. Fixing rod, 37 2. First fixed column, 380. One-way valve, 381. Air pipe, 382. Piston, 383. Piston rod, 384. Cylinder body, 385. Sealing plate, 386. First branch pipe, 387. Second branch pipe, 388. Third branch pipe, 389. Support plate, 39. Measuring tube, 100. Launch chamber, 200. Rodless chamber, 300. Rod chamber, 400. Projectile velocity measuring device, 500. Bracket, 600. Hydraulic cylinder, 700. Projectile. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0028] See attached document Figure 1-8 The figure illustrates a specific embodiment of the invention. As shown, the present invention discloses a negative pressure ambient air gun launcher system, including a launching platform 1, a chamber 2 on the launching platform 1, a cross-medium launcher 3 and a water tank 4 inside the chamber 2, the water tank 4 being located below the cross-medium launcher 3, an air compressor 5, a hydraulic press 6 and an electrical control box 7 outside the chamber 2, the cross-medium launcher 3 being connected to the air compressor 5, the hydraulic press 6 and the electrical control box 7 respectively via pipelines 8, the cross-medium launcher 3 including a gun barrel 31 and an air storage tank 32, the rear end of the gun barrel 31 passing through the air storage tank 32, a sabot 33 inside the gun barrel 31, and a guide belt 34 on the sabot 33. The system includes multiple sliding seals 35, one of which is located behind the guide belt 34. The gun barrel 31 inside the gas tank 32 has a vent 311. A base plate 36 is fixed to the rear end of the gun barrel 31. A firing chamber 100 is located between the base plate 36 and the sabot 33. The base plate 36 has a vent 361 connecting the gas tank 32 and the firing chamber 100. Before firing, the gas tank 32 inflates the guide belt 34 through the vent 311, and after firing, it connects to the firing chamber 100 through the vent 311. The guide belt 34 has an inflation port. The inner wall of the gun barrel 31 has two guide grooves 312. The gas tank 32, vent 311, sliding seal 35, guide belt 34, and guide grooves 312 constitute an anti-rotation mechanism.

[0029] Fasteners 37 are fixed on the base plate 36. Fasteners 37 are detachably connected to the projectile 700. Before firing, the sabot 33 is restricted inside the barrel 31 by fasteners 37.

[0030] The sliding seal 35 includes a sealing ring 351 and at least two slip rings 352, with the sealing ring 351 disposed between the two slip rings 352. Specifically, the sliding seals 35 are distributed at the front and rear ends of the spring support 33, and the guide band 34 is disposed between the two sliding seals 35.

[0031] The fastener 37 includes a fixing rod 371, which is interference-fitted with the rear end of the projectile 700. When the thrust on the projectile 700 is too great, the fixing rod 371 will disengage from the projectile 700.

[0032] The fastener 37 also includes a first fixing post 372 fixed on the base plate 36, and the first fixing post 372 is hinged to the fixing rod 371.

[0033] The transmedium transmitter 3 also includes: an air pipe 381, a piston 382, ​​a piston rod 383, a cylinder 384, and a sealing disc 385. The air pipe 381 is connected to the gas storage tank 32 through a one-way valve 380. The piston 382 is slidably disposed in the cylinder 384. One end of the piston rod 383 is fixed to the piston 382, ​​and the other end is fixedly connected to the sealing disc 385. The sealing disc 385 is used to control the opening and closing of the pipeline between the gas storage tank 32 and the launch chamber 100. The piston 382 divides the cylinder 384 into a rodless chamber 200 and a rod chamber 300. The air pipe 381 is connected to the rodless chamber 200. First, compressed air is introduced through the air pipe 381. This compressed air pushes the piston 382 forward, causing the sealing disc 385 to block the pipe between the gas tank 32 and the launch chamber 100. Simultaneously, another stream of compressed air enters the tank through the one-way valve 380. When the pressure in the gas tank 32 reaches the set pressure, inflation stops. In preparation for launch, the air pipe 381 is opened, and the piston rod 383 drives the sealing disc 385 to move rapidly backward, opening the pipe between the gas tank 32 and the launch chamber 100. The gas in the gas tank 32 enters the launch chamber 100, pushing out the sabot 33. Because the one-way valve 380 has a one-way opening and reverse closing characteristic, the gas in the gas tank 32 will not flow out from the air pipe 381. The overall structure has few components and a simple, ingenious design, resulting in no energy loss during the launch of the 700 projectile.

[0034] The pipeline between the gas tank 32 and the launch chamber 100 is divided into a first branch pipe 386 and a second branch pipe 387. A third branch pipe 388 is connected to the rod chamber 300 of the cylinder body 384. The third branch pipe 388 is connected to the second branch pipe 387. A sealing disc 385 controls the connection between the first branch pipe 386 and the rod chamber 300. When the piston 382 blocks the sealing disc 385 from the first branch pipe 386, the pipeline between the gas tank 32 and the launch chamber 100 is disconnected. When the piston 382 moves backward, it causes the sealing disc 385 to move away from the first branch pipe 386. The first branch pipe 386 then connects to the second branch pipe 387 through the rod chamber 300, meaning the pipeline between the gas tank 32 and the launch chamber 100 is now connected. Specifically, the third branch pipe 388 and the cylinder body 384 form a three-way connector structure.

[0035] A support plate 389 is fixed inside the cylinder body 384. The piston rod 383 passes through the support plate 389. When the piston 382 slides inside the cylinder body 384, the support plate 389 can support the moving piston rod 383.

[0036] The profile of the sealing disc 385 near the piston rod 383 is larger than that of the other end, which can better seal the first branch pipe 386.

[0037] A measuring tube 39 is fixed to the front end of the gun barrel 31, and a projectile velocity measuring device 400 is installed on the measuring tube 39. The projectile velocity measuring device 400 includes a photoelectric sensor and a digital oscilloscope. The transmitting and receiving terminals of the photoelectric sensor are fixed to the measuring tube 39 through a first measuring mechanism and a second measuring mechanism, respectively. The measuring tube 39 has a measuring hole, and the light beam emitted from the transmitting terminal travels along the measuring hole to the receiving terminal. The photoelectric sensor is communicatively connected to the digital oscilloscope. The ranging process is as follows: the transmitting terminal of the photoelectric sensor emits a light beam to the receiving terminal. When the projectile 700 passes through the light beam, it will emit a signal to the digital oscilloscope. Then, the time of the two triggers is read from the digital oscilloscope. Since the installation distance between the photoelectric sensor at the first measuring mechanism and the photoelectric sensor at the second measuring mechanism is constant, the firing velocity of the projectile 700 can be calculated.

[0038] The cross-medium launcher 3 also includes a loading platform 9 and a support 500. The gun barrel 31 and the gas tank 32 are both fixed on the support 500. The support 500 is hinged to the loading platform 9. A hydraulic cylinder 600 is provided between the loading platform 9 and the support 500. The two ends of the hydraulic cylinder 600 are respectively hinged to the loading platform 9 and the support 500. The firing angle of the gun barrel 31 can be adjusted by the hydraulic cylinder 600.

[0039] A cable tray is provided between the loading platform 9 and the launching platform 1 to facilitate personnel walking from the launching platform 1 to the loading platform 9.

[0040] In this invention, before firing, compressed air from the gas tank 32 enters the guide belt 34 through the vent 311, increasing the air pressure in the guide belt 34. When it encounters the guide groove 312, the guide belt 34 expands and embeds itself into the guide groove 312, preventing the sabot 33 from rotating, i.e., preventing the projectile 700 from rotating inside the barrel 31. After firing, when the tail of the sabot 33 moves to the vent 311, compressed air can directly enter the firing chamber 100 through the vent 311, propelling the sabot 33 forward. This additional compressed air provides more thrust to the sabot 33, further increasing the firing velocity of the projectile 700. The more vents 311 are provided, the more compressed air flows into the firing chamber 100, providing even more thrust to the sabot 33. In the above structure, the guide belt 34 and the gun barrel 31 are in flexible contact, resulting in low friction and minimal damage to the gun barrel 31. The sabot 33 is not guided when returning from the front end of the gun barrel 31 to the rear end mounting position, further reducing the damage to the gun barrel 31. The negative pressure ambient air gun launcher system provided by this invention has an anti-rotation mechanism whose guiding function is activated only after firing and not under normal conditions, minimizing damage to the gun barrel 31. Furthermore, the flexible contact further reduces damage to the gun barrel 31. The gas tank 32 stores energy in the guide belt 34 before firing through the vent 311, and after firing, it can connect to the firing chamber 100 through the vent 311, significantly increasing the firing velocity of the projectile 700.

[0041] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A negative pressure ambient air gun launcher system, characterized in that, The system includes a launch platform with a compartment housing a cross-medium launcher and a water tank located below the launcher. An air compressor, a hydraulic press, and an electrical control box are located outside the compartment. The cross-medium launcher is connected to the air compressor, hydraulic press, and electrical control box via pipelines. The cross-medium launcher includes a barrel and a gas tank. The rear end of the barrel passes through the gas tank. A sabot is located inside the barrel, equipped with a guide band and multiple sliding seals, one of which is located behind the guide band. A vent is provided in the barrel within the gas tank. A base plate is fixed to the rear end of the barrel. The base plate and the sabot... A firing chamber is provided between the two. The base plate has a vent hole connecting the gas storage tank and the firing chamber. The gas storage tank is inflated by the guide belt through the vent hole before firing and connected to the firing chamber through the vent hole after firing. The inner wall of the gun barrel is provided with a guide groove. The cross-medium launcher also includes: a gas pipe, a piston, a piston rod, a cylinder and a sealing plate. The gas pipe is connected to the gas storage tank through a one-way valve. The piston is slidably disposed in the cylinder. One end of the piston rod is fixed to the piston, and the other end is fixedly connected to the sealing plate. The sealing plate is used to control the opening and closing of the pipeline between the gas storage tank and the firing chamber. The piston divides the cylinder into a rodless chamber and a rod chamber. The gas pipe is connected to the rodless chamber. Before launch, compressed air from the gas tank (32) enters the guide belt (34) through the vent (311), increasing the air pressure in the guide belt (34). When it encounters the guide groove (312), the guide belt (34) expands and embeds itself into the guide groove (312), preventing the sabot (33) from rotating. After launch, when the tail of the sabot (33) moves to the vent (311), compressed air directly enters the launch chamber (100) through the vent (311), propelling the sabot (33) forward.

2. The negative pressure ambient air cannon launcher system according to claim 1, characterized in that, Fasteners are fixed to the base plate, and the fasteners are detachably connected to the projectile.

3. The negative pressure ambient air cannon launcher system according to claim 2, characterized in that, The sliding seal includes a sealing ring and at least two slip rings, with the sealing ring disposed between the two slip rings.

4. The negative pressure ambient air gun launcher system according to claim 3, characterized in that, The fastener includes a fixing rod, which is interference-fitted with the rear end of the projectile.

5. The negative pressure ambient air gun launcher system according to claim 4, characterized in that, The fastener also includes a first fixing post fixed to the base plate, the first fixing post being hinged to the fixing rod.

6. The negative pressure ambient air gun launcher system according to claim 1, characterized in that, The pipeline between the gas storage tank and the launch chamber is divided into a first branch pipe and a second branch pipe. The cylinder body is connected to a third branch pipe at the rod chamber. The third branch pipe is connected to the second branch pipe. The sealing disc is used to control the connection between the first branch pipe and the rod chamber.

7. The negative pressure ambient air gun launcher system according to claim 6, characterized in that, A support plate is fixed inside the cylinder, and the piston rod passes through the support plate.

8. The negative pressure ambient air cannon launcher system according to claim 1, characterized in that, A measuring tube is fixed to the front end of the gun barrel, and a projectile velocity measuring device is provided on the measuring tube.

9. The negative pressure ambient air cannon launcher system according to claim 1, characterized in that, The cross-medium launcher also includes a loading platform and a support. The gun barrel and the gas tank are both fixed on the support. The support is hinged to the loading platform. A hydraulic cylinder is provided between the loading platform and the support. The two ends of the hydraulic cylinder are respectively hinged to the loading platform and the support.

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