A portable low-overload catapult device using clean energy

Abstract

The application discloses a portable low-overload ejection device using clean energy, which comprises a handle assembly, a support assembly, a launching cylinder end cover, a launching cylinder, a gas-liquid combustion chamber and a diaphragm assembly. The handle assembly is used for fixing the sleeve and fixing the sleeve on the support assembly. The support assembly is used for supporting the whole ejection device. The launching cylinder end cover is used for fixing the launching cylinder and the gas-liquid combustion chamber and is provided with a gas interface. The launching cylinder is internally provided with a load support ring. The load support ring, the gas-liquid combustion chamber and a load bottom surface form a gas buffer space. The gas-liquid combustion chamber is used for feeding in gas and mixing the gas. The diaphragm assembly is arranged on a gas-liquid combustion chamber nozzle. The sleeve and the launching cylinder are in a sleeving structure. A recoil device is arranged between the sleeve and the launching cylinder and is used for reducing the recoil and resetting the launching cylinder. Chambers capable of extruding gas during the recoil process are arranged between the sleeve and the launching cylinder so as to further reduce the recoil. The launching cylinder recoil mechanism is adopted to increase the recoil stroke and significantly reduce the recoil force after launching. The clean energy is adopted to replace the traditional firework to expand the application range and reduce the pollution to the environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ejection, specifically to a portable low-overload ejection device using clean energy. BACKGROUND

[0002] The portable multifunctional ejection device is an innovative product combining clean energy technology and portable equipment.

[0003] With the progress of science and technology, low-overload launch is becoming the preferred requirement for launch. The traditional launch method uses pyrotechnics as energy, which may cause damage to the contents during launch due to too large an overload peak and too short an action time. The traditional method of reducing overload does not have a special structure for the combustion chamber, and after the combustible gas is injected, a short and sharp pressure peak is generated in an instant, which also risks damaging the load.

[0004] The handling measures for the load-bearing part of the traditional portable ejection device are mostly in the form of a combination of double-foot supports and seat plates or shoulder-carrying launch, and a few use launch tables. For the first load-bearing method, even if high-strength, low-mass alloy materials are used, the weight is still too heavy during assembly and movement, affecting the portability and speed of the device. For this method, the recoil force is completely borne by the ground, and there is a lack of recoil reduction devices, which may cause damage to precision loads. After launch, the vibration caused by the large recoil force will affect the launch angle. For shoulder-carrying launch, the recoil force during launch has a greater impact on launch accuracy. For launch tables, there is a lack of launch flexibility.

[0005] For traditional pyrotechnic ejection, gunpowder residues are generated during the launch process, which significantly affects the combustion efficiency and launch effect after multiple uses, and even blocks the nozzle and causes an explosion risk. The disposal of expired pyrotechnics also increases the launch cost. After the reaction occurs, harmful gases that pollute the environment and even endanger the safety of the user are generated. Current clean energy ejection is mostly suitable for a certain specific launch mode and lacks universality.

[0006] In summary, the traditional ejection method still has problems such as too large launch overload, launch universality, portability, and movement. SUMMARY

[0007] The application aims to provide a portable low-overload launching device using clean energy, which adds gas damping effect on the basis of traditional spring recoil, optimizes the unloading effect of the launching tube recoil, greatly reduces the load on the support during launching, uses a special gas-liquid combustion chamber structure to slow down the gas combustion process, weaken the overload peak, further reduce the load size, and reduce the device mass and adapt to various launching principles.

[0008] The technical solution for achieving the application aims is:

[0009] A portable low-overload launching device using clean energy, comprising:

[0010] A handle assembly for fixing the sleeve and fixing the sleeve on the support assembly;

[0011] A support assembly for supporting the entire launching device;

[0012] A launching cylinder end cover for fixing the launching cylinder and the gas-liquid combustion chamber, and provided with a gas interface;

[0013] A launching cylinder provided with a load support ring, the load support ring, the gas-liquid combustion chamber and the load bottom surface forming a gas buffer space;

[0014] A gas-liquid combustion chamber for introducing and mixing gas;

[0015] A diaphragm assembly arranged at the gas-liquid combustion chamber nozzle;

[0016] The sleeve and the launching cylinder are in a sleeve structure, and a recoil device is arranged therebetween for reducing the recoil and resetting the launching cylinder; and a chamber capable of extruding gas during the recoil process is arranged therebetween to further reduce the recoil.

[0017] Compared with the prior art, the application has the following advantages:

[0018] (1) On the basis of traditional spring recoil, the gas damping structure is improved, the overload generated during launching is further reduced by the recoil movement of the launching tube, and the load on the support assembly is reduced, thereby reducing the mass of the support assembly and improving the launching flexibility.

[0019] (2) The special M-shaped gas-liquid combustion chamber structure is used to significantly reduce the pressure peak under the condition that the speed is basically unchanged, further reducing the overload during launching.

[0020] (3) Different weight, different specifications of the load emission needs different launch conditions, the present application in the design of gas-liquid combustion chamber, diaphragm assembly and load support ring design as a modular structure, in the launch of different kinds of load multiple times, can be convenient and fast to replace the launch device, meet the different launch requirements.

[0021] (4) Considering the portable performance problem of launch, in the design, the traditional seat plate plus foot prop launch structure is combined into a special support structure with two short and one long, which can withstand overload while retaining the folding function of the original support. Compared with the traditional support mode, the weight is greatly reduced.

[0022] (5) According to the difference of launch geology, the type of foot can be changed flexibly to improve the stability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the portable multifunctional ejection device structure of clean energy of the present application;

[0024] Figure 2 It is a cross-sectional view of the launch device;

[0025] Figure 3 It is a recoil cross-sectional view of the launch device, (1) is the state before launch, (2) is the state after recoil;

[0026] Figure 4 It is a spring recoil cross-sectional view, (1) is the state before launch, (2) is the state after recoil;

[0027] Figure 5 It is a schematic view of the handle assembly structure;

[0028] Figure 6 It is a schematic view of the support assembly structure;

[0029] Figure 7 It is a schematic view of the launch cylinder end cover structure;

[0030] Figure 8 It is a schematic view of the replacement foot structure;

[0031] Figure 9 It is a schematic view of the gas flow direction of the gas-liquid combustion chamber;

[0032] BRIEF DESCRIPTION OF DRAWINGS:

[0033] 1-Launching tube, 2-Sleeve, 3-Launching tube end cap, 4-Gas-liquid combustion chamber, 5-Load support ring, 6-Diaphragm, 7-Diaphragm pressing element, 8-Returning spring, 9-Spring rod, 10-Handle, 11-Upper fixing ring, 12-Lower fixing ring, 13-Picatinny rail, 14-Short support leg, 15-Long support leg, 16-Support column, 17-Connecting rod, 18-Slip ring, 19-Lifting platform, 20-Screw handle, 21-Fixing clamp, 22-Quick release lock, 23-Sliding connecting clamp, 24-Replacement foot. Detailed Implementation

[0034] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 8 As shown, a portable low-overload ejection device using clean energy includes a launch tube 1, a gas-liquid combustion chamber 4, a load support ring 5, a launch tube end cap 3, a recoil spring 8, a sleeve 2, a spring rod 9, a diaphragm assembly, a grip assembly, and a support assembly.

[0036] like Figure 9 As shown, the front end of the gas-liquid combustion chamber 4 is a Laval nozzle. An annular V-groove 4-4 is provided inside the gas-liquid combustion chamber 4 near the Laval nozzle, which guides the gas to change direction during the charging process and then flows into the intermediate mixing zone 4-3. The rear end of the gas-liquid combustion chamber 4 is connected to the internal thread of the launch tube end cap 3 via a thread, and the front end is connected to the diaphragm assembly using screws. Different specifications of the gas-liquid combustion chamber 4 can be replaced according to requirements. The gas-liquid combustion chamber 4 is divided into a fuel gas zone 4-1, an oxide zone 4-2, and a mixing zone 4-3. The fuel gas zone 4-1, oxide zone 4-2, and mixing zone 4-3 are further subdivided into these zones. The arrangement of 4-2, mixing zone 4-3, and annular V-groove 4-4 creates an M-shaped combustion space within the gas-liquid combustion chamber 4 and the launch tube end cap 3. This special structure ensures that when combustible gas is injected, the combustible gas and oxides on both sides of mixing zone 4-3 are fully mixed in the central cylindrical space (mixing zone 4-3), while unmixed gases remain on both sides. After ignition of the central mixing zone 4-3, the combustible gas does not burn completely instantly, thus reducing the peak pressure and extending the pressurization time. The load support ring 5 is located outside the gas-liquid combustion chamber 4 and inside the launch tube 1. The load support ring 5, the outside of the gas-liquid combustion chamber 4, and the load bottom surface form a gas buffer space; the load support ring 5 can also act as a launch support.

[0037] like Figure 2As shown, the one end of the launching cylinder 1 is a launching cylinder threaded platform 1-1, the other end is a launching cylinder blocking ring 1-4 (sealed with the inner wall of the sleeve 2), and two ring-shaped launching cylinder cavity plates 1-2 and 1-3 are distributed at equal intervals around the outer wall of the launching cylinder between the two. There are four hole positions around the center on the launching cylinder cavity plate two 1-3; the hole positions can be used to fix one end of the spring rod 9, and the launching cylinder 1 is connected with the launching cylinder end cover 3 through the threaded platform 1-1.

[0038] As shown in Figure 3 and Figure 4 The sleeve 2 is sleeved outside the launching cylinder 1, the inner bottom of the sleeve 2 has a sleeve blocking ring 2-1 (sealed with the outer wall of the launching cylinder 1) and two sleeve cavity plates, and the sleeve cavity plate one 2-2 has four hole positions distributed at equal angles around the center; after the return spring 8 is appropriately compressed, it is sleeved around the spring rod 9, one end is connected to the launching cavity plate two 1-3 through a bolt, and the other end is supported on the sleeve cavity plate one 2-2, the other end of the spring rod 9 passes through the hole position of the sleeve cavity plate one 2-2; the sleeve 2 and the launching cylinder 1 are installed in cooperation; one end of the sleeve blocking ring 2-1 is attached to the launching cylinder threaded platform 1-1; the other end without the blocking ring is attached to the launching cylinder blocking ring 1-4; the annular chamber between the sleeve blocking ring 2-1 and the launching cylinder blocking ring one 1-2 forms chamber one; the annular chamber between the sleeve cavity plate two 2-3 and the launching cylinder cavity plate two 1-4 forms chamber two, and each outer wall of the chamber has four air holes arranged around the center; during the recoil, the launching cylinder 1 moves backward relative to the sleeve 2, the volume of the chamber one and the chamber two rapidly decreases, the gas is discharged from the air holes, and the spring recoil part (the return spring 8 is under pressure) is jointly acted, so that the recoil is reduced; during the return, the launching cylinder is reset to the initial state through the elastic force of the return spring 8.

[0039] As shown in Figure 2 The diaphragm assembly is composed of a diaphragm pressing piece 7 and a diaphragm 6, the diaphragm pressing piece 7 has screw fixing holes and positioning grooves, during installation, a rubber ring can be added between the gas-liquid combustion chamber 4 and the diaphragm 6 to prevent gas leakage; the screw fixing holes can install the diaphragm pressing piece 7 at one end of the throat of the gas-liquid combustion chamber 4, and different specifications of diaphragms can be replaced according to different use requirements.

[0040] As shown in Figure 7As shown, the launch tube end cover 3 is provided with four threaded holes; in the case of phase change mechanism, the middle threaded hole 3-2 is used to install the electric heating device (corresponding to the mixing area 4-3 position); the left and right threaded holes 3-1, 3-3 are connected with the liquid carbon dioxide steel cylinder (corresponding to the gas area 4-1 position), and the remaining threaded holes are used as safety relief holes; in the case of combustion launch mechanism, the middle threaded hole 3-2 is used to install the ignition device (corresponding to the mixing area 4-3 position), and the left and right threaded holes 3-1, 3-3 are connected with the gas cylinder and the oxidant cylinder (corresponding to the gas area 4-1 and the oxidant area 4-2 positions, respectively), and the upper threaded hole 3-4 is used as a safety relief hole to ensure the safety of the launching process; for the hydrogen-oxygen explosion scheme, the ignition device can be a small-power delay igniter, and for other gases such as methane, a portable high-energy igniter can be used;

[0041] As shown in Figure 5 , the handle assembly includes a handle 10, an upper fixing ring 11, a lower fixing ring 12, and a picatinny rail 13; the handle 10 is connected with the upper fixing ring 11 through screw holes at both ends, the upper fixing ring 11 is connected with the lower fixing ring 12 through four bolt groups at both sides, and is fixed to the outer wall of the sleeve 2; the picatinny rail 13 is connected with the lower fixing ring 12 through a fixed clamping groove. When moving, the support can be folded, and the handle part can be carried by hand. Since a large amount of aluminum alloy material with light weight and high strength is adopted, one person can carry the device launcher as a whole. Since the upper and lower fixing rings are connected by bolts, when the launch tube and the sleeve with a larger inner diameter are replaced, the handle assembly can still be quickly and accurately replaced, realizing the simplicity and interoperability of parts. The angle of the fixing clamp and the lifting platform can be quickly adjusted through the quick release lock, so as to change the pitch state of the launch tube.

[0042] As shown in Figure 6 , the support assembly includes a short leg 14, a long leg 15, a short connecting rod 16, a long connecting rod 17, a support column 18, a sliding ring 19, a lifting platform 20, a fixing clamp 21, a quick release lock 22, a sliding connection hoop 23, and a replacement footing 24.

[0043] Two short and one long three legs through the upper part of the connecting pin connection of the column 18, around the column 18, long leg 15 bottom end of the sliding connection hoop 23 movement of the slide; short leg 14 of the lower end also has a sliding connection hoop 23; through the buckle on the sliding connection hoop 23 fixed on each leg. All the legs have threaded holes at the bottom, used to replace the foot 24 connection; according to the long connecting rod 17 and long leg 15 corresponding, short connecting rod 16 and short leg 14 corresponding principle, two short and one long three connecting rod with the corresponding length of the sliding connection hoop 23 on the lower end of the connecting hole connected, the other end of the slip ring 19 connected, through the slip ring 19 on the column 18 can control the opening and closing of the leg; lifting platform 20 is fixed to the top of the column 18, built-in worm gear mechanism, through the screw handle to lift; quick release lock buckle 22 as a connecting pin connection lifting platform 20 and fixed clamp 21, this installation support in addition to retaining the original support easy to store the advantages of special leg combination makes it can well bear the recoil force in the process of ejection, and the leg can be used to high strength low quality of titanium alloy material, further increase the flexibility.

[0044] As Figure 8 shown, the replacement foot 24 includes rubber foot and thorn foot, and the thorn foot around has a foot bolt for fixing, can according to the terrain and load size, quickly replace the required type of foot.

[0045] Embodiment

[0046] With a load weight of 15 kg, the outlet velocity of 40 m / s, the maximum overload of not more than 100 g, for example, different launch principles are used for ejection.

[0047] In the preparation stage of the test, the mentioned launch cylinder, gas-liquid combustion chamber, load support ring, launch cylinder end cover, return spring, sleeve diaphragm assembly, handle assembly, support assembly are assembled, the heating device or ignition device is placed in the ignition hole on the launch cylinder end cover, the support is unfolded, the launch height is adjusted using the screw handle, the launch angle is adjusted using the quick release lock buckle, and is locked with the buckle. Note that the long support leg should be placed behind the launch cylinder to better withstand the recoil force after launching and avoid tilting. The preparation work before launching is completed.

[0048] The phase change emission principle is prepared for the emission stage. First, the rotating development emission cylinder end cover is removed, the gas-liquid combustion chamber is removed, the gas-liquid combustion chamber is installed in the Laval nozzle part of the gas-liquid combustion chamber, the required diaphragm is installed, and the pressure plate module is fixed by using the screw; the gas-liquid combustion chamber is reconnected with the emission cylinder end cover, the load support ring is installed according to the required load support ring size, the emission cylinder is tightened with the emission cylinder end cover; the equivalent test load is placed in the emission cylinder, the equivalent load is provided with an acceleration sensor inside for measuring the emission load; the liquefied carbon dioxide steel cylinder is used to fill 0.165 kg of liquid carbon dioxide into the gas-liquid combustion chamber through the high-pressure pipe, the liquid carbon dioxide is heated by using the remote control heating device, under the action of high temperature, the phase change reaction occurs rapidly, a large amount of high-temperature and high-pressure gas is generated in the gas-liquid combustion chamber, the pressure and temperature in the gas-liquid combustion chamber rapidly increase, when the membrane pressure is reached, the diaphragm is broken, the gas enters the load support ring and pushes the load to move, an infrared speed meter and a high-speed camera are arranged at the exit position of the cylinder for measuring the exit speed and emission posture of the equivalent load; when the equivalent load reaches the exit position, the speed is 40 m / s, the overload is 91 g, under the action of the barrel recoil, the overload is further reduced to about 75 g, effectively reducing the support of the load; with the load out of the cylinder, the pressure in the load support ring rapidly decreases, and the emission process is ended.

[0049] The preparation stage of the combustion emission principle is basically the same as the phase change, when filling the energy gas, two threaded holes are used to fill the oxidant (air) and the combustible gas (methane, hydrogen or propane), the remaining threaded holes are used as safety relief holes and ignition device installation points; in order to meet the above conditions, taking methane and hydrogen as an example, 0.078 mol of methane and 0.7446 mol of air or 0.175 mol of hydrogen and 0.4177 mol of air are filled into the gas-liquid combustion chamber, after the ignition reaction, due to the special structure of the gas-liquid combustion chamber, the gas mixture in the middle cylindrical area is more sufficient, after the gas is ignited, 95 g and 81.7 g of overloads are generated respectively, after the load reduction, 78.6 g and 67.7 g are reached respectively, and both reach the speed of 40 m / s at the outlet.

[0050] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0051] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable low-overload ejection device using clean energy, characterized in that, include: A grip assembly for securing the sleeve and fixing it to the support assembly; Support components, used to support the entire catapult device; The launch tube end cap is used to fix the launch tube and the gas-liquid combustion chamber, and is equipped with a gas interface; The launch tube is equipped with a load support ring inside. The load support ring, the gas-liquid combustion chamber and the bottom surface of the load form a gas buffer space. A gas-liquid combustion chamber is used to introduce and mix fuel gas. The diaphragm assembly is installed at the nozzle of the gas-liquid combustion chamber; The sleeve and the launch tube are connected by a sleeve structure, and a recoil device is provided between them to reduce recoil and reset the launch tube; and a chamber is provided between them to compress gas during the recoil process to further reduce recoil. The gas-liquid combustion chamber is divided into a fuel gas zone, an oxide zone, and a mixing zone; the mixing zone is located in the middle, and the fuel gas zone and oxide zone are located on both sides of the mixing zone; the nozzle on the front side of the gas-liquid combustion chamber is provided with an annular V-groove, which forms an M-shaped combustion space with the fuel gas zone, oxide zone, and mixing zone.

2. The portable low-overload ejection device using clean energy according to claim 1, characterized in that, The outer wall of the launch tube is provided with launch tube cavity plate one and launch tube cavity plate two; the inner wall of the sleeve is provided with sleeve cavity plate one and sleeve cavity plate two; sleeve cavity plate one is located between launch tube cavity plate one and launch tube cavity plate two; launch tube cavity plate two is located between sleeve cavity plate one and sleeve cavity plate two; multiple spring rods are fixed on launch tube cavity plate two, and the spring rods pass through sleeve cavity plate one; a recoil spring is sleeved on the spring rod, and the recoil spring is located between launch tube cavity plate two and sleeve cavity plate one; annular chambers are respectively provided between the front and rear ends of the launch tube and the sleeve, and exhaust holes are provided on the annular chambers, which can reduce recoil by compressing air during recoil.

3. The portable low-overload ejection device using clean energy according to claim 2, characterized in that, The inner bottom of the sleeve has a sleeve retaining ring that seals with the outer wall of the launch tube, forming an annular chamber; the front end of the launch tube has a launch tube retaining ring that seals with the inner wall of the sleeve, forming another annular chamber.

4. The portable low-overload ejection device using clean energy according to claim 1, characterized in that, The launch tube end cap has four threaded holes; including the middle threaded hole corresponding to the mixing zone, which is used to install an electric heating device; the remaining threaded holes are used to introduce combustion gas, oxides or as pressure relief holes.

5. The portable low-overload ejection device using clean energy according to claim 1, characterized in that, The grip assembly includes a grip, an upper retaining ring, a lower retaining ring, and a Picatinny rail; The grip is connected to the upper fixing ring, and the upper and lower fixing rings are used to fix it to the outer wall of the sleeve; the Picard rail is tightly connected to the lower fixing ring through a fixing slot.

6. The portable low-overload ejection device using clean energy according to claim 1, characterized in that, The support assembly includes a short support leg, a long support leg, a short connecting rod, a long connecting rod, a support column, a slip ring, a lifting platform, a fixing clamp, a quick-release locking buckle, a sliding connecting hoop, and a foot. Three outriggers, two short and one long, are connected by a connecting pin in the upper part of the support column and surround the column. The bottom of the long outrigger has a slide rail for the sliding connecting hoop to move; the lower end of the short outrigger also has a sliding connecting hoop. They are fixed to each outrigger by buckles on the sliding connecting hoop. The bottom of all outriggers is connected to the foot. The long connecting rod corresponds to the long outrigger, and the short connecting rod corresponds to the short outrigger. One end of the three connecting rods (two short and one long) is connected to the connecting hole on the sliding connecting hoop at the lower end of the corresponding length outrigger, and the other end is connected to the slip ring. The opening and closing of the outrigger is controlled by the movement of the slip ring on the support column. The lifting platform is fixed to the top of the support column and has a built-in worm gear mechanism. It is raised and lowered by a screw handle. The quick-release locking buckle acts as a connecting pin to connect the lifting platform and the fixing clamp.

7. The portable low-overload ejection device using clean energy according to claim 1, characterized in that, The diaphragm assembly includes a diaphragm press and a diaphragm. The diaphragm press has screw holes and positioning grooves for fixing the diaphragm to the nozzle of the gas-liquid combustion chamber.

8. The portable low-overload ejection device using clean energy according to claim 6, characterized in that, The feet are replaceable feet, including rubber feet and spiked feet.

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