Angle-adjustable pneumatic ejection rope net launching device
The pneumatic catapult rope net launching device, which uses a high-pressure gas cylinder and an adjustable-angle launch tube, solves the problems of unstable rope net launching and fixed angle, and achieves safe, low-cost, portable, reusable, and multi-angle launching.
Patent Information
- Application Number
- CN202511311106.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2025-11-21
AI Technical Summary
Existing capture devices using rope net launch methods are costly, unstable, difficult to control precisely, and cannot adjust the launch angle, resulting in large and heavy devices that are inconvenient to carry and use repeatedly.
Using a high-pressure gas cylinder as a power source, the device controls the release of high-pressure gas through a solenoid valve. Combined with an adjustable-angle launch tube structure and a corrugated hose, it enables precise launch and multi-angle adjustment of the rope net. The device is compact and easy to carry.
It achieves safe, low-cost, and reusable rope net launching, and can adjust the launching angle according to different capture targets. The device is compact and portable, and suitable for a variety of scenarios.
Smart Images
Figure CN120991655A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of capture net gun technology, specifically to an adjustable-angle pneumatic catapult rope net launching device. Background Technology
[0002] Nowadays, scenarios such as hostage rescue require fast, accurate, and safe capture methods. The threats of drones to aviation safety and privacy violations require efficient and low-cost interception methods to replace high-energy-consuming laser or electromagnetic weapons. Wildlife protection requires non-lethal capture tools to avoid direct human-wildlife conflict. These capture targets and launch conditions are all different, requiring nets of different sizes to match different capture targets.
[0003] In existing technologies, the launching methods of capture nets often use gunpowder, which is expensive and increases the launching cost. It is not suitable for frequent and repeated use and is not universal. Due to the instability of gunpowder combustion, it is difficult to accurately control the exit speed of the rope net launch. Moreover, the high-temperature gas produced by combustion can easily corrode and damage the equipment and is highly dangerous. At the same time, it makes the overall size larger and heavier, making it inconvenient to carry.
[0004] Furthermore, current high-pressure gas ejection devices cannot change the launch angle of the net when targeting different targets, thus failing to launch nets of different sizes to meet the capture requirements of different targets. In addition, the fixed launch angle means that the entire device cannot be folded and stored, resulting in an excessively large size that is inconvenient to carry. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide an adjustable-angle pneumatic catapult rope net launching device that is easy to operate, safe to use, reusable, and can be adjusted at different launching angles for different capture targets in order to launch rope nets of different areas.
[0006] The technical solution of this invention is as follows: an adjustable-angle pneumatic catapult rope net launching device, comprising a high-pressure gas cylinder and a launching tube fitted onto the high-pressure gas cylinder. The high-pressure gas cylinder is connected to one end of a solenoid valve via a gas cylinder adapter, and the other end of the solenoid valve is connected to a low-pressure chamber formed by a low-pressure chamber front cover and a low-pressure chamber base. A flexible hose is provided on the low-pressure chamber front cover, and the flexible hose is connected to the launching tube, and the flexible hose, the launching tube, and the low-pressure chamber are connected. The net is installed inside the launching tube and located above the high-pressure gas cylinder. A launching mass block connected to the corner of the net is placed at the bottom of the launching tube. By controlling the solenoid valve, the high-pressure gas cylinder and the low-pressure chamber are connected, and the launching mass block is ejected by high-pressure gas, thereby driving the net to move.
[0007] Furthermore, it also includes a launch tube collar fixed to the end of the launch tube, an adjusting lever with one end hinged to the launch tube collar and the other end hinged to the adjusting ring guide rail, and the adjusting ring guide rail being connected to the adjusting hole on the launch tube.
[0008] Furthermore, different adjustment holes are opened at different heights on the launch tube, and the adjustment ring guide rail is connected to different adjustment holes by screws, thereby fixing the adjustment ring guide rail at different positions on the launch tube; each adjustment hole represents a corresponding launch angle.
[0009] Furthermore, each adjustment hole on the launch tube represents a corresponding launch angle. The bottommost hole represents 0°, and each subsequent hole represents a launch angle that differs by 4°. The topmost hole corresponds to a maximum launch angle of 40°.
[0010] Furthermore, the hose is a corrugated hose, which is flexible and pressure resistant, and is designed to adapt to changes in the launch angle.
[0011] Furthermore, the launch tube is divided into two spaces by a mesh partition plate to prevent the temperature of the cylinder from dropping when the high-pressure gas cylinder is released, which could cause frostbite or deformation of the mesh during operation. It also keeps the mesh inside the launch tube, making the device structure compact.
[0012] Furthermore, an O-ring is provided between the front cover of the low-pressure chamber and the base of the low-pressure chamber.
[0013] Furthermore, the bottom of the low-pressure chamber base 7 is provided with a threaded hole for installing an end cap plug. The end cap plug is equipped with a sensor, which is used to place the sensor during use to detect pressure changes in the low-pressure chamber.
[0014] Furthermore, the formula for calculating the work done by the high-pressure gas in the high-pressure cylinder is as follows:
[0015]
[0016] In the formula, W is the energy released by the high-pressure gas, V1 is the volume of the high-pressure gas cylinder, V2 is the volume of the low-pressure chamber, V3 is the volume of the four launch tubes; γ is the adiabatic index.
[0017] The launch velocity v of the launching mass at the launch tube opening is:
[0018]
[0019] Where m is the total mass of the four launch mass blocks.
[0020] Furthermore, the relationship between the launch angle θ and the range L is:
[0021]
[0022] Where l is the side length of the expanded net packet.
[0023] The adjustable-angle pneumatic catapult rope net launching device of the present invention has the following advantages:
[0024] (1) The launching device of the present invention uses a high-pressure gas cylinder as the launching power source, which has extremely high safety compared with gunpowder and other methods. The exit speed of the launching rope net is precisely controlled. The device is compact, lightweight, small in size, and easy to carry. At the same time, the high-pressure gas cylinder is filled with gas, resulting in low launching cost and frequent, multiple uses.
[0025] (2) The launching device of the present invention adopts an adjustable angle launching tube structure, which can change the launching angle of the rope net and launch rope nets of different sizes to meet the capture needs of different capture objectives.
[0026] (3) The launching device of the present invention adopts a "folding" structure, which makes the gas release direction of the high-pressure gas cylinder opposite to the direction of the launching tube, thus saving space for the launching tube and solenoid valve. The adjustable angle device can store the four launching tubes around the launching tube, making the whole device more compact and easy to carry.
[0027] (4) The present invention connects the high-pressure gas cylinder and the solenoid valve 5 by connecting the gas cylinder adapter 4, which facilitates the disassembly and replacement of the high-pressure gas cylinder. Attached Figure Description
[0028] Figure 1 This is a cross-sectional view of the internal structure of the present invention;
[0029] Figure 2 This is a top view of the present invention;
[0030] Figure 3 This is the left view of the present invention;
[0031] Figure 4 This is a three-dimensional isometric view of the adjusted annular guide rail in the 0-degree retracted state without the net bag and the launching mass block, according to Embodiment 2 of the present invention.
[0032] In the diagram, 1. High-pressure gas cylinder; 2. Launch tube; 3. Net bag separator plate; 4. Gas cylinder adapter; 5. Solenoid valve; 6. Low-pressure chamber front cover; 7. Low-pressure chamber base; 8. End cap plug; 9. Corrugated hose; 10. Launch tube; 11. Adjusting ring rail; 12. Adjusting lever; 13. Launch tube collar; 14. Rotating pin; 15. Measuring screw; 16. Bolt assembly; 17. O-ring seal; 18. Adjustment hole; 19. Net bag; 20. Launch mass block; 21. Net bag fixing pin. Specific implementation methods
[0033] To facilitate understanding of the present invention by those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0034] In the description of this application, 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, and are only for the convenience of describing the present 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 the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0036] This invention provides an adjustable-angle pneumatic catapult rope net launching device, such as... Figure 1 As shown, the device includes a launch tube 2 fitted onto a high-pressure gas cylinder 1. The high-pressure gas cylinder 1 is connected to one end of a solenoid valve 5 via a threaded gas cylinder adapter 4. When the solenoid valve 5 is closed, a high-pressure chamber is formed. The other end of the solenoid valve 5 is threadedly connected to and in communication with a low-pressure chamber front cover 6. The low-pressure chamber front cover 6 and the low-pressure chamber base 7 are connected by a bolt group 16, and an O-ring seal 17 is provided between the low-pressure chamber front cover 6 and the low-pressure chamber base 7. An end cap plug 8 is installed at the bottom of the low-pressure chamber base 7 via a thread, thereby forming a low-pressure chamber and ensuring airtightness. The release of high-pressure gas from the high-pressure chamber to the low-pressure chamber is controlled by the solenoid valve 5. The end cap plug 8 is used to place a pressure sensor to monitor the pressure changes in the low-pressure chamber.
[0037] The low-pressure chamber front cover 6 has four threaded holes that connect to four corrugated hoses 9, and the low-pressure chamber is in communication with the corrugated hoses 9. The corrugated hoses 9 are flexible and pressure-resistant, and can change the launch angle. One end of the corrugated hoses 9 is connected to and in communication with the launch tube 10. Each launch tube 10 has a launch tube collar 13 with adhesive. The launch tube collar 13 is rotatably connected to one end of the adjusting swing rod 12 through a rotating pin 14. The other end of the adjusting swing rod 12 is hinged to the adjusting ring rail 11. The other end of the launch tube 10 has a launch mass block 20 installed in the tube barrel. The four corners of the net bag 19 are connected to four net bag fixing pins 21, and the net bag fixing pins 21 are fixedly connected to the launch mass block 20. When launching the net bag 19, the launch mass block 20 is ejected by high-pressure gas, thereby pulling the net bag 19 to launch and unfold in the air.
[0038] Meanwhile, the solenoid valve 5 and the high-pressure gas cylinder 1 are connected to one side of the low-pressure chamber front cover 6 to save space and make the structure more compact.
[0039] As one embodiment of this invention, the launching tube 2 has different adjustment holes 18. The adjusting ring rail 11 can be changed in position and connected to different adjustment holes 18 through screws 15, thereby fixing the adjusting ring rail 11 at different positions on the launching tube 2. Each adjustment hole 18 represents a corresponding launching angle. The launching tube collar 13, the adjusting swing rod 12 and the adjusting ring rail 11 form a stable triangular structure, which is firmly connected and makes the launching angle not easily changed.
[0040] Each adjustment hole 18 on the launch tube 2 represents a corresponding launch angle. The first hole represents 0°, and each subsequent hole represents a launch angle that differs by 4°, with a maximum launch angle of 40°. Figure 4 As shown, when the adjusting ring rail is adjusted to 0 degrees, the device is in the retracted state. First, select the angle at which the net needs to be launched according to the target to be captured. Then, match the fit between the adjusting hole 18 and the adjusting ring rail 11. Finally, screw the screw 15 into the adjusting ring rail 11 and the adjusting hole 18 to fix it, so that the launching tube 10 can launch at a different angle.
[0041] As one embodiment of this invention, the launch tube 2 is circumferentially provided with a net bag partition plate 3 fixed by four screws 15. The net bag partition plate 3 divides the launch tube 2 into two parts of space. One side of the net bag partition plate 3 is used to place the high-pressure gas cylinder 1, and the other side is used to place the net bag 19 to be launched. This is to prevent the cylinder body from getting very cold when the high-pressure gas cylinder 1 is rapidly depressurized, which may cause frostbite during operation or deformation of the net bag. It also keeps the net bag inside the launch tube, making the entire device structure more compact and small.
[0042] Based on the pressure P1 of the high-pressure gas in high-pressure cylinder 1 and the cylinder volume V1, the maximum pressure that the high-pressure cylinder can withstand is 30MPa, but the working pressure during use is 1-4MPa. Considering the low-pressure chamber volume V2 and the volumes V3 in the four launch tubes, and treating the launch process as an adiabatic isentropic process, the formula for calculating the work done by the high-pressure gas in the high-pressure cylinder is:
[0043]
[0044] In the formula, W is the energy released by the high-pressure gas, V1 is the volume of the high-pressure gas cylinder, V2 is the volume of the low-pressure chamber, V3 is the volume of the four launch tubes; γ is the adiabatic index, and the adiabatic coefficient of air is taken as 1.4.
[0045] The launch velocity v of the launching mass at the launch tube opening is:
[0046]
[0047] Where m is the total mass of the four launch mass blocks.
[0048] Each adjustment hole 18 on the launch tube 2 corresponds to a launch angle θ. Different launch angles θ will result in different ranges L. When the net is deployed in the air, when it reaches its maximum deployed area, the launch mass blocks 20 at the four corners of the net will shrink towards the center, failing to reach an effective capture area. Therefore, in order to achieve the target range L, different launch angles θ need to be selected. The relationship between launch angle θ and range L is:
[0049]
[0050] Where l is the side length of the expanded net packet.
[0051] Working principle or process: During use, the adjusting ring guide rail on the launch tube is fixed to the corresponding adjusting hole with screws according to the required launch angle. The position of the adjusting hole is marked with different angle symbols. The launch tube collar is fixed to the head of the launch tube, so that a stable triangular structure is formed between the launch tube collar, the adjusting lever and the adjusting ring guide rail. After the solenoid valve 5 is energized, the solenoid valve 5 is in the open state, releasing the high-pressure gas in the high-pressure gas cylinder. The gas is released through the launch tube 10 on the front cover 6 of the low-pressure chamber. The launch mass 20 is placed in the launch tube 10. The high-pressure gas of 1-4MPa does work, so that the launch mass 20 reaches the required exit velocity in a short time, and pulls the net bag 19 placed on the net bag separator plate 3 for launch.
[0052] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. An adjustable-angle pneumatic catapult rope net launching device, characterized in that, The system includes a high-pressure gas cylinder and a launch tube fitted onto the high-pressure gas cylinder. The high-pressure gas cylinder is connected to one end of a solenoid valve via a cylinder adapter. The other end of the solenoid valve is connected to a low-pressure chamber formed by the front cover and base of the low-pressure chamber. A flexible hose is installed on the front cover of the low-pressure chamber, which connects to the launch tube. The hose, launch tube, and low-pressure chamber are interconnected. A net bag is installed inside the launch tube and above the high-pressure gas cylinder. A launch mass block connected to the corner of the net bag is placed at the bottom of the launch tube. By controlling the solenoid valve, the high-pressure gas cylinder and the low-pressure chamber are connected, and the launch mass block is ejected by high-pressure gas, thereby driving the net bag to move.
2. The pneumatic catapult rope net launching device according to claim 1, characterized in that, It also includes a launch tube collar fixed to the end of the launch tube, an adjusting lever with one end hinged to the launch tube collar and the other end hinged to the adjusting ring guide rail, and the adjusting ring guide rail being connected to the adjusting hole on the launch tube.
3. The pneumatic catapult rope net launching device according to claim 2, characterized in that, The launch tube has different adjustment holes at different heights. The adjustment ring rail is connected to the different adjustment holes by screws, thereby fixing the adjustment ring rail at different positions on the launch tube; each adjustment hole represents a corresponding launch angle.
4. The pneumatic catapult rope net launching device according to claim 3, characterized in that, Each adjustment hole on the launch tube represents a corresponding launch angle. The bottom hole represents 0°, and each subsequent hole represents a launch angle that differs by 4°. The top hole corresponds to a maximum launch angle of 40°.
5. The pneumatic catapult rope net launching device according to claim 1, characterized in that, The hose is a corrugated hose, flexible and pressure resistant, designed to adapt to changes in the firing angle.
6. The pneumatic catapult rope net launching device according to claim 1, characterized in that, The launch tube is divided into two spaces by a mesh partition plate. This is to prevent the temperature of the high-pressure gas cylinder from dropping when it is released, which could cause frostbite or deformation of the mesh during operation. It also keeps the mesh inside the launch tube, making the device structure compact.
7. The pneumatic catapult rope net launching device according to claim 1, characterized in that, An O-ring is provided between the front cover of the low-pressure chamber and the base of the low-pressure chamber.
8. The pneumatic catapult rope net launching device according to claim 1, characterized in that, The bottom of the low-pressure chamber base 7 is provided with a threaded hole for installing an end cap plug. The end cap plug is equipped with a sensor, which is used to place the sensor during use to detect pressure changes in the low-pressure chamber.
9. The pneumatic catapult rope net launching device according to claim 1, characterized in that, The formula for calculating the work done by the high-pressure gas in the high-pressure cylinder is: In the formula, W is the energy released by the high-pressure gas, V1 is the volume of the high-pressure gas cylinder, V2 is the volume of the low-pressure chamber, V3 is the volume of the four launch tubes; γ is the adiabatic index. The launch velocity v of the launching mass at the launch tube opening is: Where m is the total mass of the four launch mass blocks.
10. The pneumatic catapult rope net launching device according to claim 1, characterized in that, The relationship between the launch angle θ and the range L is: Where l is the side length of the expanded net packet.