[0009] Pneumatic catapult devices such as figure 1 , figure 2 As shown, the launch tube 2 is included, the launch tube 2 is a cylindrical tube with a sealed upper opening at the bottom, a compressed air bottle 3, a one-way valve 4, an air storage chamber 5 and a sandbag 7 are arranged in the launch tube 2, and the compressed air bottle 3 is located at the launcher. The bottom of the cylinder 2, the upper part of the compressed air bottle 3 is connected to the one-way valve 4, the upper part of the one-way valve 4 is connected to the air storage chamber 5, the compressed air bottle 3 sends high-pressure air to the air storage chamber 5 through the one-way valve 4, and the air storage chamber 5 An electromagnetic valve 11 is arranged on the upper part of the cylinder, and the electromagnetic valve 11 controls the delivery of gas in the gas storage chamber 5 to the outside world. The ejector 6 is arranged on the upper part of the electromagnetic valve 11 in the launching tube 2. The ejector 6 is a barrel-shaped bottom sealing upper opening. The outer periphery of pusher 6 cooperates with the inwall of launcher 2, places sandbag 7 in pusher 6, and sandbag 7 connects an end of rope 12, and the other end of rope 12 stretches out by the upper opening of launcher 2; The lower part of the front end hinges the bracket 10, the lower end of the bracket 10 is hinged to the hinge seat 13, and the lower part of the hinge seat 13 is provided with several mounting seats 22 connected into one body, and the bottom of the hinge seat 13 is provided with a chute 31, and the chute 31 is a dovetail groove. The upper part of 22 is provided with a slider 30, the slider 30 cooperates with the chute 31, the bottom side of the mounting seat 22 is provided with a first electromagnet 18, the upper part of the first electromagnet 18 is connected to the lower end of the first spring 17, and the upper end of the first spring 17 is connected to The first block 16 and the second block 16 are equipped with a vertical first iron core 15, the bottom of the first iron core 15 can cooperate with the first electromagnet 18, the top of the mounting seat 22 offers a through hole 9, and the hinged seat 13 A slot 27 is provided at the bottom of the bottom, the top of the first iron core 15 can pass through the through hole 9 to cooperate with the slot 27, the power supply 25 is set in the mounting seat 22, the first electromagnet 18 is connected with the power supply 25, and the outside of the mounting seat 22 is provided with the second An electromagnet start button 23, the first electromagnet start button 23 controls the first electromagnet 18; Vertical mounting plate 24 is set in the mounting base 22, the second electromagnet 21 is installed on the mounting plate 24, and the second electromagnet 21 One end of the second spring 20 is connected, the other end of the second spring 20 is connected with the second block 19, the second iron core 14 is set on the second block 19, and one end of the second iron core 14 can cooperate with the second electromagnet 21 , the other end of the second iron core 14 can cooperate with the upper end of the first block 16; two lower metal sheets 26 are provided on the upper part of the mounting seat 22, two upper metal sheets 28 are arranged on the lower part of the hinged seat 13, and the two upper metal sheets 28 The two are connected by wires, spring buttons 29 are installed on the connecting wires, and the two lower metal sheets 26 are matched with the two upper metal sheets 28; the two lower metal sheets 26, the second electromagnet 21 and the power supply 25 are connected in series by wires, The two lower metal sheets 26 are respectively connected in series with the ends of the wires. In the present invention, a pusher 6 is added between the sandbag 7 and the launch tube 2, which effectively avoids the direct friction between the sandbag 7 and the launch tube 2, and makes the projection distance of the sandbag 7 farther. The tight combination between the launch tube 2 and the ejector 6 avoids the large gap between the sandbag 7 and the launch tube 2 in the prior art, which wastes a lot of compressed air and effectively reduces the cost. The gas storage chamber 5 valve of the present invention uses a solenoid valve 11, which replaces the original manual valve. The solenoid valve 11 is opened more quickly than the manual valve, so that the high-pressure gas in the gas storage chamber 5 can be released quickly, thereby greatly improving Emission efficiency and compressed air utilization are improved. A fixed ring 8 is arranged inside the upper opening of the launching tube 2, and the central opening of the fixed ring 8 can allow the sandbag 7 to pass through. The fixing ring 8 of the present invention can block the ejector 6 when the ejector 6 and the sandbag 7 are pushed to the upper part of the launch tube 2 by compressed air, and allow the sandbag 7 to pass through, effectively preventing the ejector 6 and the sandbag 7 from being Projected out, so that the ejector 6 can be reused, effectively avoiding waste of resources. The base 1 is hinged at the bottom of the launching tube 2 . The base 1 of the present invention can increase the contact area between the bottom of the launch tube 2 and the ground, and avoid the launch tube 2 from being damaged by the reaction force generated by the sandbag 7 during the process of launching the sandbag 7 . When the present invention is in use, the compressed air bottle 3 delivers high-pressure air to the air storage chamber 5 through the one-way valve 4, and the air storage chamber 5 stores the high-pressure air, and the sandbag 7 is placed on the pusher 6, and the sandbag 7 and the pusher 6 Fall naturally under the action of neutrality, open the solenoid valve 11, the high-pressure air in the air storage chamber 5 is released from the solenoid valve 11, push the sandbag 7 and the ejector 6 to be thrown upward, and the sandbag 7 and the ejector 6 reach the launch tube 2 Pusher 6 is blocked by fixed ring 8 during the top, and sandbag 7 is thrown out, and sandbag 7 drives rope 12 and arrives designated position. When adjusting the launch angle, the mounting base 22 is fixed on the ground, and the hinged base 13 can be conveniently matched with the mounting base 22 . During use, the slide groove 31 at the bottom of the connecting base 1 is slidably matched with the sliding block 30 at the top of the mounting base 22 . When placing the mounting seat 22 at the position of a suitable angle, press the spring button 29 to make the two upper metal sheets 28 communicate, and when the corresponding lower metal sheet 26 and the upper metal sheet 28 cooperate, the second electromagnet 21 and the power supply 25 form a path, the second electromagnet 21 sucks the second iron core 14, the end of the second iron core 14 is separated from the first block 16, and under the action of the first spring 17, the first block 16 The first iron core 15 is driven to move upwards, and the end of the first iron core 15 passes through the through hole 9 to cooperate with the draw-in groove 27 to be locked, and the spring button 29 is released to de-energize the second electromagnet 21. When it is necessary to take off the hinged seat 13, press the first electromagnet start button 23, the first electromagnet 18 supplies power, the first iron core 15 is sucked in, and the second iron core 14 is ejected under the action of the second spring 20 to avoid The first iron core 15 springs back. In the present invention, when the hinged seat 13 is installed on the mounting seat 22, press and hold the spring button 29 and lock it immediately after being plugged into a suitable position; After pressing the first electromagnet start button 23, the second iron core 14 will move the first iron core 15, no need to press the first electromagnet start button 23 for a long time, the present invention is convenient for installation, has a firm locking device, and can be locked and unlocked All are instant circuit connections, no need for long-term power supply, saving electric energy, and the power supply has a long service life.
[0010] The technical solutions of the present invention are not limited within the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.
