A portable catapult for flapping-wing aircraft and its operating method

Abstract

The present invention relates to a portable catapult for flapping-wing aircraft and an operating method thereof, comprising: a catapult frame; a sliding trolley, the sliding trolley being mounted on the catapult frame and being capable of sliding along the catapult frame; a flapping-wing aircraft mounting seat, the bottom end of the flapping-wing aircraft mounting seat being connected to the top of the sliding trolley; an onboard bracket, the onboard bracket being mounted on the flapping-wing aircraft mounting seat and being capable of sliding relative to the flapping-wing aircraft mounting seat; and a catapult device, the catapult device comprising at least an elastic rope mounted within the catapult frame and a trigger mounted at the bottom of the catapult frame. The portable catapult for flapping-wing aircraft can save human resources, and a single flapping-wing aircraft operator can complete the catapult launch of the flapping-wing aircraft.

Description

Technical Field

[0001] The present invention relates to the field of flapping-wing aircraft, and in particular to a portable catapult for flapping-wing aircraft and an operating method thereof. Background Art

[0002] With the development of science and technology, flapping-wing aircraft have a wide range of application scenarios both in the military and civilian fields; flapping-wing aircraft require a certain initial velocity and flight attitude for takeoff. At present, flapping-wing aircraft generally adopt the manual throwing takeoff method. In addition to a flapping-wing aircraft operator, a person is also required to assist in throwing the flapping-wing aircraft to complete the takeoff operation. On the one hand, there are certain skill requirements for the throwing personnel. When a novice throws the flapping-wing aircraft, the flapping-wing aircraft is prone to insufficient initial velocity or incorrect flight attitude, resulting in takeoff failure. On the other hand, when manually throwing, the initial velocity and flight attitude of the flapping-wing aircraft are uncontrollable, and the initial velocity and attitude are different each time thrown. In addition, if the flapping-wing aircraft needs to be taken off repeatedly (takeoff performance test) or multiple flapping-wing aircraft need to take off at the same time (multi-machine collaboration), the manual throwing method is difficult to meet the requirements. Therefore, a portable catapult for flapping-wing aircraft has been developed. Summary of the Invention

[0003] The present invention provides a portable catapult for a flapping-wing aircraft and an operating method thereof, aiming to solve at least one of the technical problems existing in the prior art.

[0004] The technical solution of the present invention is a portable catapult for a flapping-wing aircraft, comprising:

[0005] ejection rack;

[0006] A sliding trolley, the sliding trolley being arranged on the ejection frame and being capable of sliding along the ejection frame;

[0007] a flapping-wing aircraft mounting base, wherein the bottom end of the flapping-wing aircraft mounting base is connected to the top of the sliding trolley;

[0008] an airborne bracket, the airborne bracket being disposed on the flapping-wing aircraft mounting base and being slidable relative to the flapping-wing aircraft mounting base;

[0009] The ejection device at least comprises an elastic rope installed in the ejection frame and a trigger installed at the bottom of the ejection frame.

[0010] Furthermore, the ejection frame includes a front tube, a rear tube, a first positioning plate and a second positioning plate connected in sequence, the first positioning plate and the second positioning plate are respectively connected to the rear end of the front tube and the front end of the rear tube, and the first positioning plate and the second positioning plate are symmetrically arranged on the inner side of the ejection frame.

[0011] The first positioning plate is provided with a first front positioning block, a first buckle lock and a first rear positioning block connected in sequence, the first front positioning block is connected to the rear end of the front tube, and the first rear positioning block is connected to the front end of the rear tube;

[0012] The second positioning plate is provided with a second front positioning block, a second buckle lock and a second rear positioning block connected in sequence, the second front positioning block is connected to the rear end of the front tube, and the second rear positioning block is connected to the front end of the rear tube;

[0013] An elastic rope fixing shaft is provided between the first front positioning block and the second front positioning block.

[0014] Furthermore, a roller is provided at the top of the front end of the ejection frame, one end of the elastic rope is connected to the roller at the front end of the sliding trolley, and the other end of the elastic rope is fixed to the elastic rope fixing shaft after passing around the roller.

[0015] Furthermore, it also includes a front support leg and a rear support leg, the front support leg is connected to the front end of the front tube, the rear support leg is connected to the rear end of the rear tube, and the length of the front support leg is greater than the length of the rear support leg.

[0016] Furthermore, a first buffer device and a second buffer device are symmetrically provided on the outer side of the front end of the front tube.

[0017] The first buffer device includes: a first buffer mounting seat, a first buffer shaft and a first buffer rubber block connected in sequence, the first buffer mounting seat is connected to one side of the top of the front tube, the first buffer shaft is provided with a first buffer spring, and further includes a first linear bearing fixed to the top of the front tube through the first buffer mounting seat;

[0018] The second buffer device includes: a second buffer mounting seat, a second buffer shaft and a second buffer rubber block connected in sequence, the second buffer mounting seat is connected to one side of the top of the front tube, the second buffer shaft is provided with a second buffer spring, and also includes a second linear bearing fixed to the top of the front tube through the second buffer mounting seat.

[0019] Furthermore, the sliding trolley includes a first side plate, a second side plate, a first wheel axle, a second wheel axle, a third wheel axle, a fourth wheel axle, a rubber wheel with a bearing, a first buffering force block and a second buffering force block.

[0020] The first side panel and the second side panel are rectangular and arranged opposite to each other;

[0021] The first axle, the second axle, the third axle and the fourth axle are respectively connected to the end points of the first side plate and the second side plate;

[0022] There are eight rubber wheels with bearings, and the rubber wheels with bearings are respectively arranged at the connection between the first wheel axle, the second wheel axle, the third wheel axle and the fourth wheel axle and the first side plate or the second side plate;

[0023] The ejection frame passes through the space formed by the four wheel axles of the sliding trolley, and the sliding trolley slides on the ejection frame;

[0024] The first buffer force-bearing block is arranged on the outer side of the front end of the first side plate, and the second buffer force-bearing block is arranged on the outer side of the front end of the second side plate.

[0025] Furthermore, the trigger includes a pull pin, a brake rope and a trigger pedal connected in sequence.

[0026] The pull pin is arranged at the bottom end of the ejection frame, and the trigger pedal is used to control the extension and retraction of the pull pin shaft of the pull pin.

[0027] When the sliding trolley slides to the bottom end of the ejection frame, the elastic rope is in a taut state, the pulling pin shaft of the pulling pin extends out and is clamped at the front end of the second wheel shaft of the sliding trolley; when the trigger pedal is pressed, the pulling pin shaft of the pulling pin retracts, and the sliding trolley is ejected upward along the ejection frame driven by the elastic rope.

[0028] Furthermore, the flapping-wing aircraft mounting base includes a mounting base bottom plate, a first mounting base vertical plate, a second mounting base vertical plate and a tail wing support plate.

[0029] The mounting seat bottom plate is connected to the top of the sliding trolley, the first mounting seat vertical plate and the second mounting seat vertical plate are perpendicular to the mounting seat bottom plate, the first mounting seat vertical plate and the second mounting seat vertical plate are arranged opposite to each other, the first mounting seat vertical plate is provided with a first slot, and the second mounting seat vertical plate is provided with a second slot.

[0030] Both sides of the front end of the tail wing support plate are respectively connected to the top of the first mounting seat upright plate and the top of the second mounting seat upright plate.

[0031] Furthermore, the airborne bracket includes an airborne bracket base plate, a first airborne bracket vertical plate, a second airborne bracket vertical plate and an airborne bracket clamping plate.

[0032] The airborne bracket base plate includes a first locking finger and a second locking finger, the first locking finger is locked in the first slot, the second locking finger is locked in the second slot, the first airborne bracket vertical plate and the second airborne bracket vertical plate are arranged opposite to each other and are respectively perpendicular to the airborne bracket base plate, the airborne bracket card plate is locked at the front end of the first airborne bracket vertical plate and the second airborne bracket vertical plate, and the airborne bracket card plate is connected to the airborne bracket base plate.

[0033] Furthermore, the present invention also discloses a method for operating a portable catapult for a flapping-wing aircraft, which is applied to the portable catapult for a flapping-wing aircraft. The method comprises the following steps:

[0034] S100, installing the airborne bracket on the flapping-wing aircraft, and clamping the airborne bracket and the flapping-wing aircraft on the flapping-wing aircraft mounting seat;

[0035] S200, manually pull the trolley to the bottom of the ejection frame, step on the trigger pedal of the trigger to retract the pull pin of the pull pin, then pull the trolley down so that the second wheel shaft passes over the pull pin, release the trigger pedal, the pull pin of the pull pin bounces up, and the trolley is stopped at the bottom of the ejection frame. At this time, the elastic rope has stored elastic potential energy;

[0036] S300, opening the flapping-wing aircraft, flapping the wings of the flapping-wing aircraft at a certain flapping frequency, pressing the trigger pedal again, retracting the pull pin shaft of the pull pin, and the sliding trolley drives the flapping-wing aircraft thereon to accelerate under the action of the elastic potential energy of the elastic rope;

[0037] S400: When the flapping-wing aircraft moves to the top of the ejection frame, the sliding trolley stops moving under the action of the buffer device, and the airborne bracket and the flapping-wing aircraft are separated from the flapping-wing aircraft mounting seat under the action of inertia force and are ejected at a preset initial velocity and angle of attack, thereby completing the catapult takeoff of the flapping-wing aircraft.

[0038] The beneficial effects of the present invention are:

[0039] The portable catapult for flapping-wing aircraft can save human resources. A single flapping-wing aircraft operator can complete the catapult takeoff of the flapping-wing aircraft. When the flapping-wing aircraft is taken off using the catapult, the initial velocity and flight attitude can be guaranteed to be consistent each time, and the controllability is strong. By connecting multiple catapult foot trigger switches in parallel, the simultaneous takeoff requirements of multiple flapping-wing aircraft can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the overall structure of a portable catapult for flapping-wing aircraft.

[0041] Figure 2The present invention is a schematic diagram of the structure of a portable catapult for flapping-wing aircraft after concealing the front tube, rear tube, front support legs and rear support legs.

[0042] Figure 3 The diagram is a schematic diagram of a first positioning plate, a second positioning plate, and an elastic rope fixing shaft in a portable catapult for a flapping-wing aircraft.

[0043] Figure 4 A schematic diagram of a first buffer device in a portable catapult for a flapping-wing aircraft.

[0044] Figure 5 A schematic diagram of a second buffer device in a portable catapult for flapping-wing aircraft.

[0045] Figure 6 This is a schematic diagram of the structure of a portable catapult sliding trolley for flapping-wing aircraft.

[0046] Figure 7 This is a schematic diagram of the structure of a portable catapult and flapping-wing aircraft mounting base for flapping-wing aircraft.

[0047] Figure 8 Schematic diagram of the structure of a portable catapult airborne bracket for flapping-wing aircraft.

[0048] Figure 9 The diagram is a structural diagram of a slot-type connection between a portable catapult for a flapping-wing aircraft and a mounting base of the flapping-wing aircraft and an onboard bracket.

[0049] Figure 10 This is a schematic diagram of the connection between the Puyi aircraft fuselage and the onboard bracket in the portable catapult used for flapping-wing aircraft.

[0050] Figure 11 This is a schematic diagram of the connection structure between the elastic rope of a portable catapult for flapping-wing aircraft, the sliding trolley, and the onboard bracket.

[0051] Figure 12 The diagram is a structural diagram of a portable catapult ejection device for flapping-wing aircraft.

[0052] Figure 13 Schematic diagram of the pull pin structure of a portable catapult for flapping-wing aircraft.

[0053] Figure 14 The present invention is a schematic diagram of the installation of a flapping-wing aircraft on a catapult in a portable catapult for flapping-wing aircraft.

[0054] Figure 15 This is a schematic diagram of the structure of the elastic rope energy storage and trigger pull pin stopping before ejection in a portable catapult for flapping-wing aircraft.

[0055] Figure 16Schematic diagram of a portable catapult for flapping-wing aircraft catapult takeoff.

[0056] Figure 17 A flow chart of a method for operating a portable catapult for an ornithopter aircraft.

[0057] Reference numerals:

[0058] 1. The numbering in the figure is: 100, ejection frame; 101, roller; 102, front support leg; 103, rear support leg; 110, front tube; 120, rear tube; 130, first positioning plate; 131, first front positioning block; 132, first buckle lock; 133, first rear positioning block; 140, second positioning plate; 141, second front positioning block; 142, second buckle lock; 143, second rear positioning block; 150, elastic rope fixing shaft; 160, first buffer device; 161, first buffer mounting seat; 162, first buffer shaft; 163, first buffer rubber block; 164, first buffer spring; 165, first linear bearing; 170, second buffer device; 171, second buffer mounting seat; 172, second buffer shaft; 173, second buffer rubber block; 174, second buffer spring; 175, second linear bearing; 200, sliding small Car; 210, first side panel; 220, second side panel; 230, first wheel axle; 240, second wheel axle; 250, third wheel axle; 260, fourth wheel axle; 270, rubber wheel with bearing; 280, first buffer block; 290, second buffer block; 300, flapping-wing aircraft mounting seat; 310, mounting seat bottom plate; 320, first mounting seat vertical plate; 321, first slot; 330, second mounting seat vertical plate Plate; 331, second slot; 340, tail support plate; 400, airborne bracket; 410, airborne bracket bottom plate; 411, first latch finger; 412, second latch finger; 420, first airborne bracket vertical plate; 430, second airborne bracket vertical plate; 440, airborne bracket clamping plate; 500, ejection device; 510, elastic rope; 520, trigger; 521, pull pin; 522, brake rope; 523, trigger pedal. DETAILED DESCRIPTION

[0059] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0060] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, terms such as "upper," "lower," "left," "right," "top," and "bottom" used in this disclosure are intended solely to describe the relative positions of the components of the disclosure as shown in the accompanying drawings.

[0061] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention. The term "and / or" as used herein includes any combination of one or more of the related listed items.

[0062] It should be understood that although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element without departing from the scope of the present disclosure.

[0063] Reference Figures 1 to 17 In some embodiments, the technical solution of the present invention is a portable catapult for flapping-wing aircraft and its operation method, referring to Figure 1 , the portable catapult for flapping-wing aircraft comprises:

[0064] Ejection rack 100;

[0065] A sliding trolley 200 is provided on the ejection frame 100 and can slide along the ejection frame 100;

[0066] A flapping-wing aircraft mounting base 300 , the bottom end of which is connected to the top of the sliding trolley 200 ;

[0067] An airborne bracket 400, the airborne bracket 400 being disposed on the flapping-wing aircraft mounting base 300 and being slidable relative to the flapping-wing aircraft mounting base 300;

[0068] The ejection device 500 at least includes an elastic rope 510 installed in the ejection frame 100 and a trigger 520 installed at the bottom of the ejection frame 100.

[0069] The beneficial effects of the present invention are:

[0070] The portable catapult for flapping-wing aircraft can save human resources. A single flapping-wing aircraft operator can complete the catapult takeoff of the flapping-wing aircraft. When the flapping-wing aircraft is taken off using the catapult, the initial velocity and flight attitude can be guaranteed to be consistent each time, and the controllability is strong. By connecting multiple catapult foot trigger switches in parallel, the simultaneous takeoff requirements of multiple flapping-wing aircraft can be met.

[0071] Further, refer to Figures 1 to 3 The ejection frame 100 includes a front tube 110, a rear tube 120, a first positioning plate 130 and a second positioning plate 140 connected in sequence. The first positioning plate 130 and the second positioning plate 140 are respectively connected to the rear end of the front tube 110 and the front end of the rear tube 120. The first positioning plate 130 and the second positioning plate 140 are symmetrically arranged on the inner side of the ejection frame 100.

[0072] The first positioning plate 130 is provided with a first front positioning block 131, a first buckle lock 132, and a first rear positioning block 133 which are connected in sequence. The first front positioning block 131 is connected to the rear end of the front tube 110, and the first rear positioning block 133 is connected to the front end of the rear tube 120.

[0073] The second positioning plate 140 is provided with a second front positioning block 141, a second buckle lock 142, and a second rear positioning block 143 connected in sequence. The second front positioning block 141 is connected to the rear end of the front tube 110, and the second rear positioning block 143 is connected to the front end of the rear tube 120.

[0074] An elastic rope fixing shaft 150 is provided between the first front positioning block 131 and the second front positioning block 141 .

[0075] In some specific embodiments, the front tube 110 and the rear tube 120 are both made of aluminum alloy, and have dimensions of 150 mm * 150 mm * 1500 mm, with a wall thickness of 1 mm. The front tube 110 and the rear tube 120 are positioned with a first positioning plate 130 and a second positioning plate 140 to ensure that their outer surfaces are flush. The front tube 110 and the rear tube 120 are then secured with a first hasp lock 132 and a second hasp lock 142 to form a track with a length of 3000 mm.

[0076] Further, refer to Figure 1 and Figure 2 A roller 101 is provided at the top of the front end of the ejection frame 100, one end of the elastic rope 510 is connected to the roller 101 at the front end of the sliding trolley 200, and the other end of the elastic rope 510 is fixed to the elastic rope fixing shaft 150 after passing through the roller 101.

[0077] Further, refer to Figure 1 、 Figure 11 、 Figure 14 and Figure 16 , also includes a front support leg 102 and a rear support leg 103, the front support leg 102 is connected to the front end of the front tube 110, the rear support leg 103 is connected to the rear end of the rear tube 120, and the length of the front support leg 102 is greater than the length of the rear support leg 103.

[0078] In some specific embodiments, the ejection frame 100 is supported and placed on the ground by a front support leg 102 and a rear support leg 103. The front support leg 102 adopts a structure in which a 30mm*30mm*t1.0mm square tube is nested in a 28mm*28mm*t1.0mm square tube. The length of the front support leg 102 is adjusted by adjusting the nesting length of the two square tubes. The length of the rear support leg 103 is fixed. By adjusting the length of the front support leg 102, the angle between the track and the horizontal plane can be adjusted, that is, the elevation angle of the flapping-wing aircraft during ejection takeoff.

[0079] Further, refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The front end of the front tube 110 is symmetrically provided with a first buffer device 160 and a second buffer device 170.

[0080] The first buffer device 160 includes: a first buffer mounting seat 161, a first buffer shaft 162, and a first buffer rubber block 163 connected in sequence. The first buffer mounting seat 161 is connected to one side of the top of the front tube 110. The first buffer shaft 162 is provided with a first buffer spring 164. The first buffer device 160 also includes a first linear bearing 165 fixed to the top of the front tube 110 through the first buffer mounting seat 161.

[0081] The second buffer device 170 includes: a second buffer mounting seat 171, a second buffer shaft 172 and a second buffer rubber block 173 connected in sequence, the second buffer mounting seat 171 is connected to one side of the top of the front tube 110, and a second buffer spring 174 is provided on the second buffer shaft 172. It also includes a second linear bearing 175 fixed to the top of the front tube 110 through the second buffer mounting seat 171.

[0082] Specifically, the first buffer rubber block 163 is installed on the first buffer shaft 162, the first buffer spring 164 is sleeved on the first buffer shaft 162, the first buffer shaft 162 passes through the first linear bearing 165, and the first linear bearing 165 is fixed to the top of the catapult through the first buffer mounting seat 161. The first buffer spring 164 plays the main buffering role, and the first buffer shaft 162 and the first linear bearing 165 are used to prevent the first buffer spring 164 from radial deformation, which causes the buffering effect to deteriorate.

[0083] Specifically, the second buffer rubber block 173 is installed on the second buffer shaft 172, the second buffer spring 174 is sleeved on the second buffer shaft 172, the second buffer shaft 172 passes through the second linear bearing 175, and the second linear bearing 175 is fixed to the top of the catapult through the second buffer mounting seat 171. The second buffer spring 174 plays the main buffering role, and the second buffer shaft 172 and the second linear bearing 175 are used to prevent the second buffer spring 174 from radial deformation, which causes the buffering effect to deteriorate.

[0084] Further, refer to Figure 6 The sliding trolley 200 includes a first side plate 210, a second side plate 220, a first wheel shaft 230, a second wheel shaft 240, a third wheel shaft 250, a fourth wheel shaft 260, a rubber wheel with a bearing 270, a first buffer block 280 and a second buffer block 290.

[0085] The first side panel 210 and the second side panel 220 are rectangular and arranged opposite to each other;

[0086] The first axle 230, the second axle 240, the third axle 250 and the fourth axle 260 are connected to the end points of the first side plate 210 and the second side plate 220 respectively;

[0087] There are eight rubber wheels 270 with bearings, and the rubber wheels 270 with bearings are respectively arranged at the connection between the first wheel shaft 230, the second wheel shaft 240, the third wheel shaft 250 and the fourth wheel shaft 260 and the first side plate 210 or the second side plate 220;

[0088] The ejection frame 100 passes through the space formed by the four wheel axles of the sliding trolley 200, and the sliding trolley 200 slides on the ejection frame 100;

[0089] The first buffering force block 280 is disposed on the outside of the front end of the first side plate 210 , and the second buffering force block 290 is disposed on the outside of the front end of the second side plate 220 .

[0090] Specifically, the sliding trolley 200 is provided with eight rubber wheels 270 with bearings, and the rubber wheels with bearings are mounted around the guide rails on the ejection frame 100 through the first wheel axle 230, the second wheel axle 240, the third wheel axle 250, or the fourth wheel axle 260 and the wheel mounting plate, so that the sliding trolley 200 can move linearly along the guide rails on the ejection frame 100.

[0091] Further, refer to Figure 12 and Figure 13 The trigger 520 includes a pull pin 521, a brake rope 522 and a trigger pedal 523 connected in sequence.

[0092] The pull pin 521 is provided at the bottom end of the ejection frame 100 , and the trigger pedal 523 is used to control the extension and retraction of the pull pin shaft of the pull pin 521 .

[0093] When the sliding trolley 200 slides to the bottom end of the ejection frame 100, the elastic rope 510 is in a taut state, and the pulling pin shaft of the pulling pin 521 extends and is clamped at the front end of the second wheel shaft 240 of the sliding trolley 200. When the trigger pedal 523 is pressed, the pulling pin shaft of the pulling pin 521 retracts, and the sliding trolley 200 is ejected upward along the ejection frame 100 under the drive of the elastic rope 510.

[0094] Reference Figure 14 and Figure 15 One end of the elastic rope 510 is connected to the first wheel shaft 230 of the sliding trolley 200, and the other end of the elastic rope 510 is passed around the roller 101 at the top of the ejection frame 100 and fixed to the elastic rope fixing shaft 150 of the ejection frame 100. The elastic rope 510 is used to drive the sliding trolley 200. Manually pulling the sliding trolley 200 from the roller 101 to the pull pin 521 at the bottom of the ejection frame 100 can fully store elastic potential energy in the elastic rope 510.

[0095] In some specific embodiments, referring to Figure 14 and Figure 15 The trigger 520 is a foot-operated trigger 520, which is arranged at the bottom of the ejection frame 100, wherein the pulling pin 521 is installed at the end of the rear tube 120, and the pulling pin 521 is connected to the trigger pedal 523 through a brake rope 522. The trigger pedal 523 is used to control the extension and retraction of the pulling pin shaft of the pulling pin 521. When the pulling pin shaft bounces up, the sliding trolley 200 can be stopped at the bottom of the ejection frame 100, and the elastic rope 510 is full of elastic potential energy. When the pulling pin shaft retracts, the sliding trolley 200 drives the flapping-wing aircraft thereon to accelerate under the drive of the elastic rope 510.

[0096] Further, refer to Figure 7The flapping-wing aircraft mounting base 300 includes a mounting base bottom plate 310, a first mounting base vertical plate 320, a second mounting base vertical plate 330 and a tail wing support plate 340.

[0097] The mounting base plate 310 is connected to the top of the sliding trolley 200, the first mounting base plate 320 and the second mounting base plate 330 are perpendicular to the mounting base plate 310, the first mounting base plate 320 and the second mounting base plate 330 are arranged opposite to each other, the first mounting base plate 320 is provided with a first slot 321, and the second mounting base plate 330 is provided with a second slot 331.

[0098] Both sides of the front end of the tail wing support plate 340 are connected to the top of the first mounting seat upright plate 320 and the top of the second mounting seat upright plate 330 respectively.

[0099] The tail support plate 340 is used to support the tail of the flapping-wing aircraft so that it does not interfere with the ejection frame 100 during the ejection process to avoid ejection failure. The first mounting seat upright plate 320 and the second mounting seat upright plate 330 are provided with a first slot 321 and a second slot 331. The first slot 321 and the second slot 331 are both U-shaped slots used to fix the airborne bracket 400. The flapping-wing aircraft mounting seat 300 is fixed to the sliding trolley 200 through the mounting seat base plate 310.

[0100] Further, refer to Figures 8 to 10 The airborne bracket 400 includes an airborne bracket base plate 410, a first airborne bracket vertical plate 420, a second airborne bracket vertical plate 430 and an airborne bracket card plate 440.

[0101] The airborne bracket base plate 410 includes a first locking finger 411 and a second locking finger 412, the first locking finger 411 is locked in the first slot 321, and the second locking finger 412 is locked in the second slot 331, the first airborne bracket vertical plate 420 and the second airborne bracket vertical plate 430 are arranged opposite to each other and are respectively perpendicular to the airborne bracket base plate 410, the airborne bracket clamping plate 440 is clamped at the front end of the first airborne bracket vertical plate 420 and the second airborne bracket vertical plate 430, and the airborne bracket clamping plate 440 is connected to the airborne bracket base plate 410.

[0102] Specifically, the airborne bracket base plate 410, the first airborne bracket upright plate 420, the second airborne bracket upright plate 430 and the airborne bracket clamping plate 440 are all made of 2.5mm carbon fiber plates and are hollowed out to reduce weight so as to reduce the influence of the weight of the airborne bracket 400 on the performance parameters of the flapping-wing aircraft. One end of the airborne bracket 400 is connected to the fuselage of the flapping-wing aircraft through the bracket upright plate, and the other end of the airborne bracket 400 is clamped in the first slot 321 and the second slot 331 of the upper mounting seat upright plate of the flapping-wing aircraft mounting seat 300 through the bracket base plate. Under the combined action of its own gravity and the acceleration force during ejection, the flapping-wing aircraft and the airborne bracket 400 can be firmly fixed on the flapping-wing aircraft mounting seat 300.

[0103] The first airborne bracket upright plate 420 and the second airborne bracket upright plate 430 of the airborne bracket 400 are both connected to the fuselage of the flapping-wing aircraft. Here, the center of gravity of the flapping-wing aircraft and the center of gravity of the airborne bracket 400 are required to be in the same direction. The airborne bracket base plate 410 in the airborne bracket 400 is inserted into the grooves of the first airborne bracket upright plate 420 and the second airborne bracket upright plate 430.

[0104] Furthermore, the present invention also discloses a method for operating a portable catapult for a flapping-wing aircraft, wherein the portable catapult for a flapping-wing aircraft is operated by referring to Figure 17 , the operating method comprises the following steps:

[0105] S100, installing the airborne bracket 400 on the flapping-wing aircraft, and clamping the airborne bracket 400 and the flapping-wing aircraft on the flapping-wing aircraft mounting base 300;

[0106] S200: Manually pull the trolley 200 to the bottom of the ejection frame 100, step on the trigger pedal 523 of the trigger 520, retract the pull pin of the pull pin 521, then pull the trolley 200 downward so that the second wheel shaft 240 passes over the pull pin 521, release the trigger pedal 523, and the pull pin of the pull pin 521 springs up, stopping the trolley 200 at the bottom of the ejection frame. At this time, the elastic rope 510 has stored elastic potential energy.

[0107] S300: Open the flapping-wing aircraft and flap its wings at a certain flapping frequency. Then, press the trigger pedal 523 again. The pull pin shaft of the pull pin 521 retracts. Under the elastic potential energy of the elastic rope 510, the sliding trolley 200 drives the flapping-wing aircraft thereon to accelerate.

[0108] S400: When the flapping-wing aircraft moves to the top of the ejection frame 100, the sliding trolley 200 stops moving under the action of the buffer device, and the airborne bracket 400 and the flapping-wing aircraft are separated from the flapping-wing aircraft mounting seat 300 under the action of inertial force, and are ejected at a preset initial velocity and angle of attack, thereby completing the catapult takeoff of the flapping-wing aircraft.

[0109] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may be modified and varied in various ways.

Claims

1. A portable catapult for flapping-wing aircraft, characterized in that: include: Ejection rack (100); A sliding trolley (200), wherein the sliding trolley (200) is arranged on the ejection frame (100), and the sliding trolley (200) can slide along the ejection frame (100); A flapping-wing aircraft mounting seat (300), wherein the bottom end of the flapping-wing aircraft mounting seat (300) is connected to the top of the sliding trolley (200); an airborne bracket (400), the airborne bracket (400) being arranged on the flapping-wing aircraft mounting seat (300) and being slidable relative to the flapping-wing aircraft mounting seat (300); An ejection device (500), the ejection device (500) comprising at least an elastic rope (510) installed in the ejection frame (100) and a trigger (520) installed at the bottom of the ejection frame (100); The sliding trolley (200) comprises a first side plate (210), a second side plate (220), a first wheel axle (230), a second wheel axle (240), a third wheel axle (250), a fourth wheel axle (260), a rubber wheel with a bearing (270), a first buffering force block (280) and a second buffering force block (290). The first side plate (210) and the second side plate (220) are rectangular and arranged opposite to each other; The first axle (230), the second axle (240), the third axle (250), and the fourth axle (260) are respectively connected to end points provided on the first side plate (210) and the second side plate (220); The number of the rubber wheels (270) with bearings is eight, and the rubber wheels (270) with bearings are respectively arranged at the connection points between the first wheel axle (230), the second wheel axle (240), the third wheel axle (250), and the fourth wheel axle (260) and the first side plate (210) or the second side plate (220); The ejection frame (100) passes through the space formed by the four wheel axles of the sliding trolley (200), and the sliding trolley (200) slides on the ejection frame (100); The first buffer force block (280) is arranged on the outside of the front end of the first side plate (210), and the second buffer force block (290) is arranged on the outside of the front end of the second side plate (220); The trigger (520) comprises a pull pin (521), a brake rope (522) and a trigger pedal (523) connected in sequence. The pull pin (521) is arranged at the bottom end of the ejection frame (100), and the trigger pedal (523) is used to control the extension and contraction of the pull pin shaft of the pull pin (521). When the sliding trolley (200) slides to the bottom end of the ejection frame (100), the elastic rope (510) is in a taut state, the pull-out pin shaft of the pull-out pin (521) extends and is clamped at the front end of the second wheel shaft (240) of the sliding trolley (200), and when the trigger pedal (523) is pressed, the pull-out pin shaft of the pull-out pin (521) retracts, and the sliding trolley (200) is ejected upward along the ejection frame (100) driven by the elastic rope (510); The flapping-wing aircraft mounting seat (300) comprises a mounting seat base plate (310), a first mounting seat upright plate (320), a second mounting seat upright plate (330), and a tail wing support plate (340). The mounting seat bottom plate (310) is connected to the top of the sliding trolley (200), the first mounting seat vertical plate (320) and the second mounting seat vertical plate (330) are perpendicular to the mounting seat bottom plate (310), the first mounting seat vertical plate (320) and the second mounting seat vertical plate (330) are arranged opposite to each other, the first mounting seat vertical plate (320) is provided with a first slot (321), and the second mounting seat vertical plate (330) is provided with a second slot (331). Both sides of the front end of the tail wing support plate (340) are respectively connected to the top of the first mounting seat upright plate (320) and the top of the second mounting seat upright plate (330).

2. The portable catapult for flapping-wing aircraft according to claim 1, characterized in that: The ejection frame (100) includes a front tube (110), a rear tube (120), a first positioning plate (130), and a second positioning plate (140) connected in sequence, wherein the first positioning plate (130) and the second positioning plate (140) are respectively connected to the rear end of the front tube (110) and the front end of the rear tube (120), and the first positioning plate (130) and the second positioning plate (140) are symmetrically arranged on the inner side of the ejection frame (100); The first positioning plate (130) is provided with a first front positioning block (131), a first buckle lock (132), and a first rear positioning block (133) which are connected in sequence, the first front positioning block (131) being connected to the rear end of the front tube (110), and the first rear positioning block (133) being connected to the front end of the rear tube (120); The second positioning plate (140) is provided with a second front positioning block (141), a second buckle lock (142) and a second rear positioning block (143) which are connected in sequence, the second front positioning block (141) being connected to the rear end of the front tube (110), and the second rear positioning block (143) being connected to the front end of the rear tube (120); An elastic rope fixing shaft (150) is provided between the first front positioning block (131) and the second front positioning block (141).

3. The portable catapult for flapping-wing aircraft according to claim 2, characterized in that: A roller (101) is provided at the top of the front end of the ejection frame (100), one end of the elastic rope (510) is connected to the roller (101) at the front end of the sliding trolley (200), and the other end of the elastic rope (510) is fixed to the elastic rope fixing shaft (150) after passing through the roller (101).

4. The portable catapult for flapping-wing aircraft according to claim 2, characterized in that: It also includes a front supporting leg (102) and a rear supporting leg (103), wherein the front supporting leg (102) is connected to the front end of the front tube (110), and the rear supporting leg (103) is connected to the rear end of the rear tube (120), and the length of the front supporting leg (102) is greater than the length of the rear supporting leg (103).

5. The portable catapult for flapping-wing aircraft according to claim 2, characterized in that: A first buffer device (160) and a second buffer device (170) are symmetrically provided on the outer side of the front end of the front tube (110). The first buffer device (160) comprises: a first buffer mounting seat (161), a first buffer shaft (162) and a first buffer rubber block (163) connected in sequence, the first buffer mounting seat (161) being connected to one side of the top of the front tube (110), a first buffer spring (164) being provided on the first buffer shaft (162), and a first linear bearing (165) being fixed to the top of the front tube (110) via the first buffer mounting seat (161); The second buffer device (170) includes: a second buffer mounting seat (171), a second buffer shaft (172) and a second buffer rubber block (173) connected in sequence, the second buffer mounting seat (171) is connected to one side of the top of the front tube (110), a second buffer spring (174) is provided on the second buffer shaft (172), and the second linear bearing (175) is fixed to the top of the front tube (110) through the second buffer mounting seat (171).

6. The portable catapult for flapping-wing aircraft according to claim 1, characterized in that: The airborne bracket (400) comprises an airborne bracket base plate (410), a first airborne bracket upright plate (420), a second airborne bracket upright plate (430) and an airborne bracket clamping plate (440). The airborne bracket base plate (410) includes a first latching finger (411) and a second latching finger (412), wherein the first latching finger (411) is latched in the first slot (321), and the second latching finger (412) is latched in the second slot (331), the first airborne bracket vertical plate (420) and the second airborne bracket vertical plate (430) are arranged opposite to each other and are respectively perpendicular to the airborne bracket base plate (410), the airborne bracket clamping plate (440) is latched at the front ends of the first airborne bracket vertical plate (420) and the second airborne bracket vertical plate (430), and the airborne bracket clamping plate (440) is connected to the airborne bracket base plate (410).

7. A method for operating a portable catapult for a flapping-wing aircraft, applied to the portable catapult for a flapping-wing aircraft according to any one of claims 1 to 6, characterized in that: The operating method comprises the following steps: S100, installing the airborne bracket (400) on the flapping-wing aircraft, and clamping the airborne bracket (400) and the flapping-wing aircraft on the flapping-wing aircraft mounting seat (300); S200, manually pull the sliding trolley (200) to the bottom of the ejection frame (100), step on the trigger pedal (523) of the trigger (520), retract the pull pin shaft of the pull pin (521), then pull the sliding trolley (200) down to make the second wheel shaft (240) pass over the pull pin (521), release the trigger pedal (523), the pull pin shaft of the pull pin (521) bounces up, and the sliding trolley (200) is stopped at the bottom of the ejector, at this time the elastic rope (510) stores elastic potential energy; S300, opening the flapping-wing aircraft, flapping the wings of the flapping-wing aircraft at a certain flapping frequency, stepping on the trigger pedal (523) again, the pull pin shaft of the pull pin (521) retracts, and the sliding trolley (200) drives the flapping-wing aircraft thereon to accelerate under the action of the elastic potential energy of the elastic rope (510); S400, when the flapping-wing aircraft moves to the top of the ejection frame (100), the sliding trolley (200) stops moving under the action of the buffer device, and the airborne bracket (400) and the flapping-wing aircraft are separated from the flapping-wing aircraft mounting seat (300) under the action of inertial force, and are ejected at a preset initial velocity and angle of attack, thereby completing the ejection takeoff of the flapping-wing aircraft.

Images