Take-off boosting device for unmanned aerial vehicle

Abstract

The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle take-off boosting device which comprises a rocket engine installed at the rear end of the abdomen of a fuselage of an unmanned aerial vehicle. A mounting piece is rotationally mounted at the bottom of a web plate of the abdomen of the fuselage, and a rolling bag is hung on the mounting piece; a foaming agent is stored in the rolling bag, and air taps are mounted on at least two unparallel surfaces of the rolling bag; a limiting piece for limiting the mounting piece is arranged on the web plate; according to the unmanned aerial vehicle, after the starter is triggered, limiting on the mounting part is relieved, after the mounting part rotates by 90 degrees, the rolling bag is released, the rolling bag falls to the ground behind the unmanned aerial vehicle, one air nozzle makes contact with the ground and is opened after making contact with the ground, the rolling bag is ventilated, the foaming agent making contact with air expands, and the rolling bag is unfolded to form a boosting wall behind the unmanned aerial vehicle; the auxiliary rocket engine boosts the unmanned aerial vehicle to take off, and the take-off requirements of the unmanned aerial vehicle for high take-off quality and wing load under unmanned assistance can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to a take-off boosting device for an unmanned aerial vehicle. Background Art

[0002] Common small drone take-off methods include hand-throwing, tilt track rubber band, hydraulic and pneumatic. The specific take-off method depends mainly on the mass and wing load of the drone. As the take-off mass and wing load increase, the force required for the drone to take off becomes greater. However, both hand-throwing and rubber band ejection can only be achieved under human conditions.

[0003] Moreover, although the catapult launch method can give the UAV sufficient acceleration for takeoff, in addition to the transport aircraft and control station, it is also necessary to add vehicles to transport the catapult system. Therefore, for some scenarios that are not suitable for investing manpower and vehicles to transport the catapult system, no matter which take-off method is used, it cannot meet the take-off needs of increasing a certain take-off mass and wing load, and it is necessary to improve it. Summary of the invention

[0004] The purpose of the present invention is to provide a UAV take-off booster device to solve the problem that the existing UAV take-off booster device is difficult to take off in a complex environment when manpower and vehicles cannot be used to help take off.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows: A UAV takeoff booster device is used for the takeoff of the UAV, comprising a rocket engine installed at the rear end of the belly of the UAV fuselage; a mounting piece is rotatably mounted at the bottom of the belly plate of the belly of the fuselage, and a winding bag is mounted on the mounting piece; a foaming agent is stored in the winding bag, and at least two non-parallel surfaces of the winding bag are installed with air nozzles; a limiting piece for limiting the mounting piece is arranged on the belly plate; A hinge seat is installed on the top of the web, one end of a tilting rod is hinged to the hinge seat, and the other end of the tilting rod is connected to a starter; a stop rod penetrating the web is arranged in the middle of the tilting rod, and one end of the stop rod penetrating the web is coupled to the mounting member; Among them, when the UAV starts to take off, the starter is triggered to pull the tilting rod to press down the mounting part to release the limiting part of the mounting part, and the mounting part rotates and releases the rolling bag after rotating into place so that the rolling bag falls to the ground. The air nozzle on one surface of the rolling bag touches the ground and is opened. After the rolling bag is ventilated, the foaming agent expands to form a booster wall behind the UAV, thereby assisting the rocket engine in boosting the UAV to take off.

[0006] According to a further definition, erection frames are installed on both sides of the fuselage, erection wheels are installed at the ends of the erection frames, and erection steering gears are installed inside the fuselage, and the erection steering gears are used to drive the erection frames to be lowered and folded.

[0007] According to a further limitation, a starting rope is connected between the erecting frame and the tilting rod to form the starter.

[0008] According to a further definition, an adjusting servo is installed in the fuselage for adjusting the injection angle of the rocket engine; the output shaft of the adjusting servo is connected to a deflection rod, and the deflection rod is overlapped with the cocking rod to form the starter.

[0009] According to further definition, the web is provided with a through hole, a rotating shaft is installed on the mounting piece, and the rotating shaft is rotatably connected to the through hole; the hinged seat is installed at the top of the through hole, and is provided with a spring mounting hole concentric with the through hole, a spring member is installed in the spring mounting hole, and the spring member can be a spring sheet or a winding spring, which is used to apply force to drive the mounting piece to rotate after the limit of the mounting piece is released.

[0010] According to further definition, the limiting member includes a limiting opening and a limiting hole opened on the web, and the top two ends of the mounting member are provided with a first positioning portion cooperating with the limiting opening and a second positioning portion cooperating with the limiting hole; the limiting hole is located on the projection center line of the tilting rod on the web, so that the support rod can pass through the web; the limiting hole and the center line from the limiting opening to the through hole are perpendicular to each other.

[0011] According to further definitions, a mounting position is provided on one side of the mounting member; two opposite hanging rods are provided on the mounting position, and a movable knife is installed between the two opposite hanging rods; a fixed knife is installed at the bottom of the web; a hanging rope is connected to the top of the rolling bag, and the rolling bag is hung on the hanging rod through the hanging rope; when the mounting member is rotated into place, the fixed knife and the movable knife work together to cut off the hanging rope to release the rolling bag.

[0012] According to a further definition, the mounting member is a material storage shell, in which a foaming agent is also stored, a material drop opening is provided at the bottom of the material storage shell, a blocking block is installed on the material drop opening, and a pull rope is connected between the blocking block and the rolling bag.

[0013] The invention adopting the above technical solution has the following advantages: The UAV takeoff booster device in the present application, when the UAV starts to take off, the set starter is triggered, the limit of the limit part on the mounting part is released, the mounting part rotates ninety degrees and then releases the winding bag, and the winding bag falls to the ground behind the UAV, and one of the air nozzles contacts the ground. After touching the ground, it is opened to ventilate the winding bag, causing the foaming agent in contact with the air to expand, and the winding bag unfolds to form a booster wall behind the UAV. The booster wall can effectively increase the reverse thrust of the rocket engine, assist the rocket engine in boosting the UAV to take off, and can meet the takeoff requirements of the UAV with higher takeoff mass and wing load under unmanned assistance, and improve the adaptability, stability and controllability of the UAV takeoff booster. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings; Figure 1 A schematic diagram of a simulation structure of a drone embodiment of the present invention; Figure 2 This is a structural schematic diagram of an embodiment of a UAV takeoff booster device of the present invention; Figure 3 A schematic diagram of the force on the vertical frame of a take-off booster device for a drone according to the present invention; Figure 4 It is a schematic diagram of the assembly of the material storage shell and the winding bag on the web when they are in standby mode in an embodiment of the present invention; Figure 5 It is a schematic diagram of the assembly of the material storage shell and the winding bag on the web when they are ready to be released in an embodiment of the present invention; Figure 6 It is a schematic diagram of the assembly of the storage shell on the web after the winding bag is released in the embodiment of the present invention; Figure 7 Schematic diagram of the explosion structure of the web, storage shell and winding bag in the embodiment of the invention Figure 1 ; Figure 8 Schematic diagram of the explosion structure of the web, storage shell and winding bag in the embodiment of the invention Figure 2 ; Fig. 9 It is a schematic diagram of the assembly of the material storage shell and the winding bag in the embodiment of the invention; The main component symbols are described as follows: 100, UAV; 101, fuselage; 102, wing; 103, tail; 104, frame; 105, erection frame; 106, erection wheel; 107, running wheel; 108, rocket engine; 109, injection nozzle; 110, belly plate; 111, erection fulcrum; 112, tilting rod; 1121, stop rod; 1122, connecting hole; 113, rewinding bag; 114, storage shell; 115, Block; 116, limit opening; 117, limit hole; 118, fixed knife; 119, air nozzle; 120, blanking opening; 121, movable knife; 122, hanging rod; 123, mounting position; 124, hinged seat; 125, spring mounting hole; 126, through hole; 127, limit cap; 128, rotating shaft; 129, hanging rope; 130, pull rope; 131, first positioning part; 132, second positioning part. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions of the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0016] like Figure 1-Figure 6As shown, a UAV takeoff booster device according to an embodiment of the present invention is used for takeoff of a UAV 100, wherein the UAV 100 comprises a fuselage 101, wings 102 installed on both sides of the top of the fuselage 101, and a tail 103 installed at the tail of the fuselage 101; and cruise wheels for walking during takeoff are installed on the belly of the fuselage 101; the fuselage 101 is composed of a frame 104 and a skin covering the frame 104; thus, the UAV 100 has the same structure as a conventional UAV. The UAV takeoff booster device includes a rocket engine 108 installed at the rear end of the belly of the fuselage 101 of the UAV 100. There are two rocket engines 108, which are respectively located on both sides of the rear end of the belly of the fuselage 101; the bottom of the belly plate 110 of the belly of the fuselage 101 is rotatably installed with a mounting part, and the mounting part is mounted with a winding bag 113; the winding bag 113 stores a foaming agent, and the foaming agent can be selected from a filler made of pentane; because pentane is liquid at room temperature (generally around 25°C), but due to its low boiling point (the boiling point of normal pentane is 36.1°C), pentane will gradually vaporize in a room temperature environment. According to the properties of the gas, the volume will increase significantly when it changes from liquid to gas. Taking a certain amount of pentane as an example, when it changes from liquid to gas, the volume expansion multiple is large, so that the material foams and expands; the two non-parallel surfaces of the winding bag 113 are installed with air nozzles 119; the belly plate 110 is provided with a limiter for limiting the mounting part; like Figure 7 , Figure 8 As shown, a hinge seat 124 is installed on the top of the web 110 of this embodiment, and one end of the tilting rod 112 is hinged to the hinge seat 124, and the other end of the tilting rod 112 is connected to the starter; a stopper 1121 penetrating the web 110 is provided in the middle of the tilting rod 112, and one end of the stopper 1121 penetrating the web 110 is coupled to the mounting member; Among them, when the drone 100 starts to take off, the starter is triggered to pull the cocking rod 112 to press down the mounting part to release the limit of the mounting part by the limit part, and the mounting part rotates and releases the winding bag 113 after rotating into place, so that the winding bag 113 falls to the ground, and the air nozzle 119 on one surface of the winding bag 113 touches the ground and is opened. After the winding bag 113 is ventilated, the foaming agent expands to form a booster wall behind the drone 100, and the auxiliary rocket engine 108 boosts the drone 100 to take off; the take-off requirements of the drone 100 with higher take-off mass and wing load are met under unmanned assistance.

[0017] An air nozzle 119 is provided on the non-coplanar surface of the rolling bag 113. With this design, when the rolling bag 113 falls on the ground, no matter which side contacts the ground, an air nozzle 119 can be opened to ventilate the rolling bag 113, thereby stimulating the foaming agent therein to react and form a booster wall.

[0018] like Figure 7As shown, in this embodiment, the web 110 is provided with a through hole 126, and a rotating shaft 128 is installed on the mounting member. The rotating shaft 128 is rotatably connected to the through hole 126, and the rotatable connection can be achieved through a bearing; a limiting cap 127 is installed on the top of the rotating shaft 128 to limit the axial movement of the rotating shaft 128 and prevent the rotating shaft 128 from falling out. In addition, a return spring (not shown in the figure) is installed between the web 110 and the limiting cap 127. When the limit of the mounting member is released, the return spring can drive the mounting member to rotate 90 degrees and then be fixed by the limit.

[0019] In fact, in this embodiment, the hinge seat 124 can also be installed on the top of the through hole 126, and a spring mounting hole 125 concentric with the through hole 126 is provided. A spring member is installed in the spring mounting hole 125. The spring member also has the same function as the return spring. A spring sheet or a winding spring can be used to apply force to drive the mounting member to rotate after the limit of the mounting member is released.

[0020] like Figure 2 , Figure 3 As shown, in this embodiment, in order to shorten the gliding distance of the drone 100, the drone 100 can be set to a certain take-off angle, and cooperate with the drone take-off booster device to achieve a more flexible take-off; erection frames 105 are installed on both sides of the fuselage 101, and erection wheels 106 are installed at the ends of the erection frames 105. An erection steering gear is installed inside the fuselage 101, and the erection steering gear is used to drive the erection frames 105 to be lowered and retracted; During the boosting process, the connection between the fuselage 101 and the erection frame 105 is the erection fulcrum 111; the erection frame 105 is lowered, and the erection wheel 106 is supported on the ground. The line connecting the erection fulcrum 111 to the tail of the fuselage 101 is simplified to Figure 3 In the structure shown, the angle between the fuselage 101 and the ground is α, and the value of α can be flexibly set according to the design requirements of the drone 100.

[0021] In fact, the erection wheel 106 of this embodiment can replace the cruise wheel to allow the drone 100 to cruise on the ground; it can also be used in combination with the cruise wheel.

[0022] In fact, in order to improve the adaptability of the drone 100 to complex environments, a running wheel 107 can be installed on the head of the drone 100 to improve the obstacle-crossing capability of the drone 100.

[0023] like Figures 4 to 7As shown, in this embodiment, a starting rope is connected between the erecting frame 105 and the tilting rod 112 to form a starter; the erecting frame 105 and the tilting rod 112 are both provided with a connecting hole 1122 for connecting the starting rope, and the starting rope can be a nylon rope. When the erecting frame 105 is lowered, the starting rope can be used to pull one end of the tilting rod 112 connected thereto, and at the same time, the stop rod 1121 is driven to press down the mounting member, so that the limit of the mounting member is released.

[0024] like Figure 2 , Figure 7 As shown, in this embodiment, an adjusting servo is installed in the fuselage 101 for adjusting the injection angle of the rocket engine 108; the output shaft of the adjusting servo is connected with a deflection rod, and the deflection rod is overlapped with the tilting rod 112 to form a starter; when adjusting the injection angle of the rocket engine 108, the deflection rod is driven to rotate counterclockwise, overlaps the tilting rod 112, and presses down the tilting rod 112, so that the support rod 1121 also presses down the mounting part.

[0025] The limiting member of this embodiment includes a limiting opening 116 and a limiting hole 117 opened on the web 110, and a first positioning portion 131 cooperating with the limiting opening 116 and a second positioning portion 132 cooperating with the limiting hole 117 are provided at the top two ends of the mounting member; the limiting hole 117 is located on the projection center line of the tilting rod 112 on the web 110, so that the support rod 1121 can pass through the web 110; the center lines of the limiting hole 117, the limiting opening 116 and the through hole 126 are perpendicular to each other.

[0026] In fact, the mounting piece may be a strip plate, with square blocks integrally provided at both ends of the top of the strip plate to form the first positioning portion 131 , and a circular column is installed on one of the square blocks to form the second positioning portion 132 .

[0027] When the push rod 1121 presses down the second positioning portion 132, the mounting member rotates under the action of the spring member, releasing the limiting hole 117 from limiting the mounting member; after the mounting member rotates ninety degrees, the first positioning portion 131 cooperates with the limiting opening 116 to limit the mounting member again.

[0028] In this embodiment, one end of the abutment rod 1121 passes through the web 110 and is coupled to the mounting member, and has two states: one is abutting against the top of the mounting member; the other is out of contact with the mounting member.

[0029] like Figure 8 , Fig. 9As shown, in this embodiment, a mounting position 123 is provided on one side of the mounting member; two opposite hanging rods 122 are provided on the mounting position 123, and a movable knife 121 is installed between the two opposite hanging rods 122; a fixed knife 118 is installed at the bottom of the web 110; a hanging rope 129 is connected to the top of the rolling bag 113, and the rolling bag 113 is hung on the hanging rod 122 through the hanging rope 129; when the mounting member is rotated into place (the first positioning portion 131 is in the limit opening 116 ), the fixed knife 118 and the movable knife 121 work together to cut the hanging rope 129 to release the rolling bag 113; the rolling bag 113 falls to the ground behind the UAV 100, and an air nozzle 119 that contacts the ground first contacts the ground, and is opened after touching the ground to ventilate the rolling bag 113, causing the foaming agent that contacts the air to expand, and the rolling bag 113 is unfolded to form a booster wall behind the UAV 100, which can effectively increase the reverse thrust of the rocket engine 108.

[0030] In fact, both the fixed blade 118 and the movable blade 121 are blades, the difference is that the fixed blade 118 is fixed to the bottom of the web 110, and the movable blade 121 can rotate with the mounting member. Figure 6 For example, the blade of the fixed knife 118 is on the rotation path of the left hanging rod 122, and when the mounting part needs to be reset ( Figure 6 The state of the vertical web 110 in the length direction is rotated to Figure 4 When the mounting member is parallel to the longitudinal direction of the web 110 as shown in the figure, it can limit the travel of the mounting member, making it easier for the mounting member to be limited by the limiting hole 117.

[0031] like Figure 8 , Fig. 9 As shown, in this embodiment, the mounting member is a material storage shell 114, and the material storage shell 114 also stores a foaming agent. A material drop opening 120 is opened at the bottom of the material storage shell 114, and a blocking block 115 is installed on the material drop opening 120. A pull rope 130 is connected between the blocking block 115 and the rolling bag 113.

[0032] After the rolling bag 113 is released, the block 115 is pulled by the pull rope 130, and the block 115 is separated from the drop port 120, and the foaming agent in the storage shell 114 is discharged, falls on the ground and expands. Correspondingly, the injection port 109 of the rocket engine 108 corresponds to the drop port 120; the foaming agent discharged from the drop port 120 forms two new booster walls, which can also assist the rocket engine 108 in boosting the UAV 100.

[0033] The present embodiment provides a UAV takeoff boosting device, and based on the UAV takeoff boosting device, a UAV takeoff boosting device is provided. When the UAV 100 starts to take off, the set starter is triggered, the limit of the mounting part by the limit part is released, and the mounting part rotates ninety degrees to release the winding bag 113. The winding bag 113 falls to the ground behind the UAV 100. One of the air nozzles 119 contacts the ground and is opened after touching the ground to ventilate the winding bag 113, causing the foaming agent contacting the air to expand. The winding bag 113 unfolds to form a boosting wall behind the UAV 100. The boosting wall can effectively increase the reverse thrust of the rocket engine 108, assist the rocket engine 108 in boosting the UAV 100 to take off, and can meet the takeoff requirements of the UAV 100 with higher takeoff mass and wing load under unmanned assistance.

[0034] The above is a detailed introduction to a UAV takeoff booster device provided by the present invention. The description of the specific embodiment is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A drone take-off booster device, used for taking off a drone (100), comprising a rocket engine (108) installed at the rear end of the belly of a fuselage (101) of the drone (100); characterized in that: A mounting piece is rotatably mounted at the bottom of the belly plate (110) of the belly of the fuselage (101), and a rolling bag (113) is mounted on the mounting piece; a foaming agent is stored in the rolling bag (113), and a gas nozzle (119) is mounted on at least two non-parallel surfaces of the rolling bag (113); a limiting piece for limiting the position of the mounting piece is arranged on the belly plate (110); A hinge seat (124) is installed on the top of the web (110), one end of a tilting rod (112) is hinged to the hinge seat (124), and the other end of the tilting rod (112) is connected to a starter; a stopper (1121) penetrating the web (110) is provided in the middle of the tilting rod (112), and one end of the stopper (1121) penetrating the web (110) is coupled to the mounting member; When the drone (100) starts to take off, the starter is triggered to pull the lever (112) to press down the mounting part to release the limiting part from limiting the mounting part, and the mounting part rotates and releases the rolling bag (113) after rotating to the right position, so that the rolling bag (113) falls to the ground, and the air nozzle (119) on one surface of the rolling bag (113) touches the ground and is opened, and the rolling bag (113) is ventilated to expand the foaming agent to form a booster wall behind the drone (100), thereby assisting the rocket engine (108) in boosting the drone (100) to take off.

2. The UAV takeoff booster device according to claim 1, characterized in that: Erecting frames (105) are installed on both sides of the fuselage (101), and erecting wheels (106) are installed at the ends of the erecting frames (105). An erecting steering gear is installed inside the fuselage (101), and the erecting steering gear is used to drive the erecting frames (105) to be lowered and retracted.

3. The UAV takeoff booster device according to claim 2, characterized in that: A starting rope is connected between the erecting frame (105) and the tilting rod (112), forming the starter.

4. The UAV takeoff booster device according to claim 1, characterized in that: An adjusting servo is installed in the fuselage (101) for adjusting the injection angle of the rocket engine (108); the output shaft of the adjusting servo is connected to a deflection rod, and the deflection rod is overlapped with the cocking rod (112) to form the starter.

5. The UAV takeoff booster device according to claim 1, characterized in that: The web (110) is provided with a through hole (126), a rotating shaft (128) is installed on the mounting member, and the rotating shaft (128) is rotatably connected to the through hole (126); the hinge seat (124) is installed at the top of the through hole (126), and is provided with a spring mounting hole (125) concentric with the through hole (126), a spring member is installed in the spring mounting hole (125), and the spring member is used to apply force to drive the mounting member to rotate after the limit of the mounting member is released.

6. The UAV takeoff booster device according to claim 5, characterized in that: The limiting member comprises a limiting opening (116) and a limiting hole (117) provided on the web (110); a first positioning portion (131) cooperating with the limiting opening (116) and a second positioning portion (132) cooperating with the limiting hole (117) are provided at two ends of the top of the mounting member; the limiting hole is located on the projection center line of the tilting rod on the web so that the support rod can pass through the web; the center lines of the limiting hole (117) and the limiting opening (116) to the through hole (126) are perpendicular to each other.

7. The UAV takeoff booster device according to claim 1, characterized in that: A mounting position (123) is provided on one side of the mounting member; two opposite hanging rods (122) are provided on the mounting position (123), and a movable knife (121) is installed between the two opposite hanging rods (122); a fixed knife (118) is installed at the bottom of the web (110); a hanging rope (129) is connected to the top of the rolling bag (113), and the rolling bag (113) is hung on the hanging rod (122) via the hanging rope (129); when the mounting member is rotated into place, the fixed knife (118) and the movable knife (121) work together to cut the hanging rope (129) to release the rolling bag (113).

8. The UAV takeoff booster device according to claim 1, characterized in that: The mounting member is a material storage shell (114), and a foaming agent is also stored in the material storage shell (114). A material drop opening (120) is provided at the bottom of the material storage shell (114), and a blocking block (115) is installed on the material drop opening (120). A pull rope (130) is connected between the blocking block (115) and the rolling bag (113).

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