Electric retractable undercarriage of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle electric retractable undercarriage which comprises an unmanned aerial vehicle main body assembly, an electric retractable undercarriage and a butterfly nut, and the unmanned aerial vehicle main body assembly and the electric retractable undercarriage are positioned through a plurality of studs and are fastened through the butterfly nut. Compared with the prior art, the electric retractable undercarriage can be quickly disassembled and assembled, and the electric retractable undercarriage has the advantages of being simple in structure, convenient to operate, easy to transport, convenient to maintain and replace and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to an electric retractable landing gear for an unmanned aerial vehicle. Background Technique

[0002] For traditional unmanned aerial vehicles equipped with electric retractable landing gears, the electric retractable landing gear and the unmanned aerial vehicle body are usually assembled into a whole, and it is impossible to achieve quick disassembly and assembly, resulting in a large packaging volume of the unmanned aerial vehicle, inconvenient transportation and difficult maintenance and replacement. Content of the Utility Model

[0003] The purpose of the utility model is to provide an electric retractable landing gear for an unmanned aerial vehicle with a simple structure, convenient operation, easy transportation and convenient maintenance and replacement, so as to solve the problems put forward in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an electric retractable landing gear for an unmanned aerial vehicle, including an unmanned aerial vehicle body assembly, an electric retractable landing gear and a wing nut. The unmanned aerial vehicle body assembly and the electric retractable landing gear are positioned by a plurality of double-headed bolts and fastened with wing nuts to realize modular assembly convenient for maintenance and replacement;

[0005] It further includes an electrical part, and the electrical part realizes electrical connection between the landing gear and the unmanned aerial vehicle body assembly through two pairs of quick connectors at the end of the reduction motor and the bottom of the unmanned aerial vehicle body.

[0006] Preferably, the unmanned aerial vehicle body assembly includes an unmanned aerial vehicle body, a first screw, a first clamp, a second clamp, a hexagonal nut, a leg mounting seat and a double-headed bolt. The first clamp and the second clamp are connected by the first screw to fix the leg mounting seat, and the hexagonal nut and the double-headed bolt are assembled on the leg mounting seat.

[0007] Preferably, two outstretched arms are symmetrically arranged on the left and right of the unmanned aerial vehicle body. The outer side of the outstretched arm is provided with a first curved surface, a limiting hole is arranged at the bottom of the outstretched arm, and two first quick connectors are arranged at the bottom of the unmanned aerial vehicle body.

[0008] Preferably, a second curved surface is provided inside the first clamp, and first screw through holes are provided on both the left and right sides; a third curved surface is provided inside the second clamp, and second screw through holes are provided on both the left and right sides; a first threaded hole is provided at the top of the tripod mounting base, and a fourth curved surface is provided in the middle. A limiting post is provided on the fourth curved surface, a third screw through hole and a first mounting plane are provided at the bottom, and a first flange card slot is provided on the first mounting plane; the double-headed bolt is provided with a first external thread, a first flange plate and a second external thread; the limiting post of the tripod mounting base is assembled with the limiting hole of the UAV body, the fourth curved surface fits with the first curved surface from below, the second curved surface and the third curved surface of the first clamp and the second clamp fit with the first curved surface from above, and the first screw through hole and the second screw through hole are aligned with the first threaded hole, and the four are fastened with a first screw; the first external thread of the double-headed bolt passes through the third screw through hole, the first flange plate is assembled into the first flange card slot, and the hexagon nut fixes the double-headed screw to the tripod fixing base from the back.

[0009] Preferably, the electric retractable landing gear assembly includes a landing gear motor control assembly, a rotating shaft, a tripod assembly and a third screw, and the landing gear motor control assembly is connected to the tripod assembly through the rotating shaft.

[0010] Preferably, the landing gear motor control assembly includes a reduction motor, a second screw, a first bearing, a lead screw, a lever, a second bearing and a motor mounting base. The main shaft of the reduction motor is fixedly connected to the lead screw through the motor output shaft. The lever is mounted on the lead screw, and the lead screw is connected through the first bearing, the second bearing and the motor mounting base.

[0011] Preferably, the reduction motor is provided with a fourth screw through hole, an output shaft is provided at the end of the axis, a cable extends out from the back of the reduction motor, and a second quick connector is provided at the end of the cable; a third external thread is provided in the middle of the lead screw, a first cylinder is provided at the front end, an output shaft card slot is provided on the side of the first cylinder, and a second cylinder is provided at the end.

[0012] Preferably, a third cylinder is provided in the middle of the lever, fourth cylinders are symmetrically arranged on both sides of the third cylinder, and a second threaded hole is provided in the middle of the third cylinder.

[0013] Preferably, a second mounting plane is provided at the top of the motor mounting base, a fifth screw through hole and a first square groove are provided on the second mounting plane, a second mounting plane is provided at the front end, a first round hole and a third threaded hole are provided on the second mounting plane, a first bearing hole is provided in front of the first round hole, a second round hole is provided at the rear end of the motor mounting base, a second bearing hole is provided in front of the second round hole, second square grooves, third round holes, a second flange card slot is provided in front of the third round hole, and a sixth screw through hole is provided at the rear are provided on both the left and right sides of the motor mounting base; the rotating shaft is provided with a fifth cylinder, a second flange plate is provided behind the fifth cylinder, and a fourth threaded hole is provided at the front end of the fifth cylinder.

[0014] Preferably, the tripod assembly includes a tripod joint, a vertical rod, a T-shaped adapter, a cross bar, and a foam tube. The tripod joint is inserted into one end of the vertical rod, and the other end of the vertical rod is installed on the cross bar through the T-shaped adapter. The foam tubes are installed at both ends of the cross bar. At the rear end of the tripod joint, there is a fork structure. In the middle of the fork structure, there is a fourth round hole. On both sides of the fourth round hole, there are bosses. At the end of the fork structure, there are two shift lever stoppers. In the middle of the shift lever stoppers, there is a shift lever chute. In the middle of the shift lever chute, there is a third square groove. At the front end of the tripod joint, there is a sixth cylinder. In the middle of the sixth cylinder, there is a first vertical rod bonding groove. In the vertical direction of the T-shaped adapter, there is a seventh cylinder. In the middle of the seventh cylinder, there is a second vertical rod bonding groove. In the horizontal direction of the T-shaped adapter, there is an eighth cylinder. In the middle of the eighth cylinder, there is a cross bar bonding groove. The cross bars are symmetrically bonded and fixed in the cross bar bonding groove of the T-shaped adapter. One end of the vertical rod is bonded and fixed in the second vertical rod bonding groove of the T-shaped adapter, and the other end of the vertical rod is bonded and fixed in the first vertical rod bonding groove of the tripod joint. The tripod joint and the T-shaped adapter are aligned horizontally and centered. The foam tubes are assembled at both ends of the cross bar.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, a tripod mounting seat is assembled on the extension arm of the UAV body. The bottom of the tripod mounting seat is provided with a first mounting plane, and a number of stud bolts are installed on the first mounting plane. The top of the motor mounting seat of the electric retractable landing gear is provided with a second mounting plane, and a number of fifth screw through holes are provided on the second mounting plane. The fifth screw through holes correspond to the stud bolts one by one. The electric retractable landing gear is assembled on the stud bolts of the tripod mounting seat from below, and then the two are fastened with wing nuts. The disassembly process is the reverse operation, and the disassembly and assembly of the electric retractable landing gear can be completed without tools, thus achieving the design goal. Compared with the prior art, the present utility model can realize the quick disassembly, assembly, replacement and repair of the UAV electric retractable landing gear, and has the advantages of simple structure, convenient operation, easy transportation, and convenient maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall assembly diagram of the UAV and the electric retractable landing gear of the present utility model;

[0018] Figure 2 is the exploded view of the UAV body assembly and the electric retractable landing gear of the present utility model;

[0019] Figure 3 is the exploded view of the UAV body assembly of the present utility model;

[0020] Figure 4 is the three-dimensional diagram of the UAV body of the present utility model;

[0021] Figure 5Schematic perspective view of the first clamp of the present utility model;

[0022] Figure 6 Schematic perspective view of the second clamp of the present utility model;

[0023] Figure 7 Schematic perspective view of the tripod mounting base of the present utility model;

[0024] Figure 8 Schematic perspective view of the stud bolt of the present utility model;

[0025] Figure 9 Exploded view of the power-driven retractable landing gear of the present utility model;

[0026] Figure 10 Exploded view of the landing gear motor control assembly of the present utility model;

[0027] Figure 11 Schematic perspective view of the motor of the present utility model;

[0028] Figure 12 Schematic perspective view of the lead screw of the present utility model;

[0029] Figure 13 Schematic perspective view of the shift lever of the present utility model;

[0030] Figure 14 Schematic perspective view of the motor mounting base of the present utility model;

[0031] Figure 15 Schematic perspective view of the rotating shaft of the present utility model;

[0032] Figure 16 Exploded view of the tripod assembly of the present utility model;

[0033] Figure 17 Schematic perspective view of the tripod joint of the present utility model;

[0034] Figure 18 Schematic perspective view of the T-shaped adapter of the present utility model.

[0035] Explanation of the markings in the figure: 1 General assembly of the unmanned aerial vehicle and the power-driven retractable landing gear;

[0036] 10 UAV main body components, 110 UAV main body, 1101 extending arm, 1102 first curved surface, 1103 limiting hole, 1104 quick connector 1, 120 first screw, 130 first clamp, 1301 second curved surface, 1302 first screw through hole, 140 second clamp, 1401 third curved surface, 1402 second screw through hole, 150 hex nut, 160 tripod mounting seat, 1601 first threaded hole, 1602 fourth curved surface, 1603 limiting post, 1604 third screw through hole, 1605 first mounting plane, 1606 first flange slot, 170 double-headed bolt, 1701 first external thread, 1702 first flange, 1703 second external thread;

[0037] 20 Electric retractable landing gear components, 210 landing gear motor control components, 2110 reduction motor, 21101 fourth screw through hole, 21102 output shaft, 21103 cable, 21104 second quick connector, 2120 second screw, 2130 first bearing, 2140 lead screw, 21401 first cylinder, 21402 output shaft slot, 21403 third external thread, 21404 second cylinder, 2150 lever, 21501 third cylinder, 21502 fourth cylinder, 21503 second threaded hole, 2160 second bearing, 2170 motor mounting seat, 21701 second mounting plane, 21702 fifth screw through hole, 21703 first square groove, 21704 third mounting plane, 21705 first round hole, 21706 first bearing hole, 21707 third threaded hole, 21708 second round hole, 21709 second bearing hole, 217010 second square groove, 217011 third round hole, 217012 second flange slot, 217013 sixth screw through hole, 220 rotating shaft, 2201 fifth cylinder, 2202 second flange, 2203 fourth threaded hole, 230 tripod components, 2310 tripod joint, 23101 fork structure, 23102 fourth round hole, 23103 boss, 23104 lever stop, 23105 lever chute, 23106 third square groove, 23107 sixth cylinder, 23108 first vertical rod bonding groove, 2320 vertical rod, 2330 T-shaped adapter, 23301 seventh cylinder, 23302 second vertical rod bonding groove, 23303 eighth cylinder, 23304 cross rod bonding groove, 2340 cross rod, 2350 foam tube, 240 third screw;

[0038] 30 Wing nut. Detailed implementation

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figure 1 、 Figure 2 as shown Figure 1 which is the overall assembly schematic diagram of the drone and the electric retractable landing gear of the present invention; Figure 2 which is the exploded schematic diagram of the drone main body assembly and the electric retractable landing gear of the present invention. The present invention provides an electric retractable landing gear with a simple structure, convenient operation, and easy transportation, maintenance, and replacement.

[0041] The electric retractable landing gear of the drone and its installation structure in this embodiment mainly facilitate the transportation and maintenance and replacement of components of the drone.

[0042] This mechanism consists of a drone main body assembly 10, an electric retractable landing gear 20, and a wing nut 30. The drone main body assembly 10 and the electric retractable landing gear 20 are positioned by a number of double-headed bolts and fastened with the wing nut 30;

[0043] It also includes an electrical part. The electrical part realizes electrical connection between the landing gear and the drone main body assembly through two pairs of quick connectors at the end of the reduction motor and the bottom of the drone main body.

[0044] As Figure 3 shown, the drone main body assembly 10 includes a drone main body 110, a first screw 120, a first clamp 130, a second clamp 140, a hexagon nut 150, a leg mounting seat 160, and a double-headed bolt 170. The first clamp 130 and the second clamp 140 are connected by the first screw 120 to fix the leg mounting seat 160, and the double-headed bolt 170 and the hexagon nut 150 are assembled on the leg mounting seat 160.

[0045] As Figure 4 shown, the drone main body 110 is symmetrically provided with two protruding arms 1101 on the left and right. The outer side of the protruding arm 1101 is provided with a first curved surface 1102, and the bottom of the protruding arm 1101 is provided with a limit hole 1103. The bottom of the drone main body 110 is provided with two first quick connectors 1104.

[0046] As Figure 5 shown, the inner side of the first clamp 130 is provided with a second curved surface 1301, and the left and right sides of the first clamp 130 are provided with first screw through holes 1302.

[0047] As Figure 6 shown, a third curved surface 1401 is provided inside the second clamp 140, and second screw through holes 1402 are provided on both the left and right sides of the second clamp 140.

[0048] As Figure 7 shown, a first threaded hole 1601 is provided at the top of the tripod mounting seat 160, and a fourth curved surface 1602 is provided in the middle. A limiting post 1603 is provided on the fourth curved surface 1602, a third screw through hole 1604 and a first mounting plane 1605 are provided at the bottom, and a first flange slot 1606 is provided on the first mounting plane 1605.

[0049] As Figure 8 shown, the double-headed bolt 170 is provided with a first external thread 1701, a first flange 1702 and a second external thread 1703.

[0050] Two outstretched arms 1101 are symmetrically provided on the left and right sides of the UAV body 110. A first curved surface 1102 is provided on the outer side of the outstretched arm 1101, a limiting hole 1103 is provided at the bottom of the outstretched arm 1101, and two first quick connectors 1104 are provided at the bottom of the UAV body 110. The first clamp 130, the second clamp 140 and the tripod mounting seat 160 are respectively assembled on the outstretched arm 1101 from the upper and lower directions. The first curved surface 1102 is simultaneously attached to the second curved surface 1301, the third curved surface 1401 and the fourth curved surface 1602, and the limiting post 1603 of the tripod mounting seat 160 is assembled into the limiting hole 1103 at the bottom of the outstretched arm 1101 to prevent the tripod mounting seat 160 from shifting and misaligning during use. At the same time, the first screw 120 is used to fix the first clamp 130 and the second clamp 140 on the tripod mounting seat 160, so that the first clamp 130 and the second clamp 140 are fixed on the tripod mounting seat 160 and are simultaneously assembled on the outstretched arm 1101 of the UAV body 110. A third screw through hole 1604 and a first mounting plane 1605 are provided at the bottom of the tripod mounting seat 160, and a first flange slot 1606 is also provided on the first mounting plane 1605. The first external thread 1701 of the double-headed bolt 170 passes through the third screw through hole 1604, the first flange 1702 is assembled in the first flange slot 1606, and then the double-headed bolt 170 is fixed to the bottom of the tripod mounting seat 160 with a hexagonal nut 150. The second external thread 1703 of the double-headed bolt 170 is exposed, and the UAV body assembly 10 is assembled.

[0051] As Figure 9 shown, the electric retractable landing gear assembly 20 includes a landing gear motor control assembly 210, a rotating shaft 220, a landing gear assembly 230 and a third screw 240. The landing gear motor control assembly 210 is connected to the landing gear assembly 230 through the rotating shaft 220.

[0052] As Figure 10As shown, the landing gear motor control assembly 210 includes a reduction motor 2110, a second screw 2120, a first bearing 2130, a lead screw 2140, a lever 2150, a second bearing 2160, and a motor mount 2170. The main shaft of the reduction motor 2110 is fixedly connected to the lead screw 2140 through an output shaft 21102. The lever 2150 is mounted on the lead screw 2140, and the lead screw 2140 is connected through the first bearing 2130, the second bearing 2160, and the motor mount 2170.

[0053] As Figure 11 shown, the reduction motor 2110 is provided with a fourth screw through-hole 21101. The end of the axis of the reduction motor 2110 is provided with an output shaft 21102. A cable 21103 extends from the back of the reduction motor, and the end of the cable 21103 is provided with a second quick connector 21104.

[0054] As Figure 12 shown, the middle of the lead screw 2140 is provided with a third external thread 21403. The front end is provided with a first cylinder 21401. The side of the first cylinder 21401 is provided with an output shaft card slot 21402, and the end is provided with a second cylinder 21404.

[0055] As Figure 13 shown, the middle of the lever 2150 is provided with a third cylinder 21501. Fourth cylinders 21502 are symmetrically arranged on both sides of the third cylinder 21501. A second threaded hole 21503 is provided in the middle of the third cylinder.

[0056] As Figure 14 shown, the top of the motor mount 2170 is provided with a second mounting plane 21701. The second mounting plane 21701 is provided with a fifth screw through-hole 21702 and a first square groove 21703. The front end of the motor mount 2170 is provided with a second mounting plane 21704. The second mounting plane 21704 is provided with a first round hole 21705 and a third threaded hole 21707. A first bearing hole 21706 is provided in front of the first round hole 21705. The rear end of the motor mount 2170 is provided with a second round hole 21708. A second bearing hole 21708 is provided in front of the second round hole 21708. Second square grooves 217010, third round holes 217011 are provided on the left and right sides of the motor mount 2170. A second flange card slot 217012 is provided in front of the third round hole 217011, and a sixth screw through-hole 217013 is provided at the rear.

[0057] As Figure 15 shown, the rotating shaft 220 is provided with a fifth cylinder 2201. A second flange 2202 is provided behind the fifth cylinder 2201. A fourth threaded hole 2203 is provided at the front end of the fifth cylinder 2201.

[0058] As Figure 16As shown, the tripod assembly 230 includes a tripod joint 2310, a vertical rod 2320, a T-shaped adapter 2330, a cross bar 2340, and a foam tube 2350. The tripod joint 2310 is inserted into one end of the vertical rod 2320, and the other end of the vertical rod 2320 is installed on the cross bar 2340 through the T-shaped adapter 2330. The foam tubes 2350 are installed at both ends of the cross bar 2340.

[0059] As Figure 17 shown, a fork structure 23101 is provided at the rear end of the tripod joint 2310. A fourth round hole 23102 is provided in the middle of the fork structure 23101. Bosses 23103 are provided on both sides of the fourth round hole 23102. Two lever stoppers 23104 are provided at the end of the fork structure 23101. A lever chute 23105 is provided in the middle of the lever stoppers 23104. A third-party groove 23106 is provided in the middle of the lever chute 23105. A sixth cylinder 23107 is provided at the front end of the tripod joint 2310. A first vertical rod bonding groove 23108 is provided in the middle of the sixth cylinder 23107.

[0060] As Figure 18 shown, a seventh cylinder 23301 is provided in the vertical direction of the T-shaped adapter 2330. A second vertical rod bonding groove 23302 is provided in the middle of the seventh cylinder 23301. An eighth cylinder 23303 is provided in the horizontal direction of the T-shaped adapter 2330. A cross bar bonding groove 23304 is provided in the middle of the eighth cylinder 23303.

[0061] The working principle of the present utility model is as follows: The cross bar 2340 is adhesively fixed in the cross bar bonding groove 23304 of the T-shaped adapter 2330. One end of the vertical rod 2320 is adhesively fixed in the second vertical rod bonding groove 23302 of the T-shaped adapter 2330. The other end of the vertical rod 2320 is adhesively fixed in the first vertical rod bonding groove 23108 of the tripod joint 2310. The tripod joint 2310 is aligned with the center of the T-shaped adapter 2330 and is symmetric in the left and right directions. The tripod assembly 230 is assembled.

[0062] The first bearing 2130 and the second bearing 2160 are respectively assembled in the first bearing hole 21706 and the second bearing hole 21709 of the motor mounting base 2170. The first cylinder 21401 and the second cylinder 21404 at both ends of the lead screw 2140 are respectively assembled in the inner holes of the first bearing 2130 and the second bearing 2160. The second threaded hole 21503 on the lever 2150 is threadedly assembled on the third external thread 21403 of the lead screw 2140. The fourth cylinders 21502 on both sides of the lever 2150 are assembled in the second square groove 217010 on the left and right sides of the motor mounting base 2170. The output shaft 21102 of the reduction motor 2110 is assembled in the output shaft card slot 21402 of the lead screw 2140. At the same time, the fourth screw through hole 21101 is aligned with the third threaded hole 21707 of the motor mounting base 2170, and the reduction motor 2110 is installed on the third mounting plane 21704 of the motor mounting base 2170 using the second screw 2120, and the landing gear motor control assembly 210 is assembled;

[0063] Place the fork structure 23101 of the leg bracket joint 2310 on the leg bracket assembly 230 in the first square groove 21703 of the motor mounting base 2170, and align the fourth round hole 23102 of the leg bracket joint 2310 with the third round hole 217011 of the motor mounting base 2170. At the same time, the lever stop 23104 of the leg bracket joint 2310 is sleeved on the fourth cylinder 21502 of the lever 2150, that is, the fourth cylinder 21502 of the lever 2150 is assembled in the lever chute 23105. At this time, use the rotating shaft 220 and the third screw 240 to fix the leg bracket assembly 230 on the motor mounting base 2170, and the electric retractable landing gear assembly 20 is assembled;

[0064] The reduction motor 2110 rotates, and the output shaft 21102 drives the lead screw 2140 to rotate synchronously. The lead screw 2140 is in threaded cooperation with the lever 2150. The rotation of the reduction motor 2110 will cause the lever 2150 to slide within the range of the second square groove 217010 on the motor mounting base 2170. When the lever 2150 slides to the limit position (dead point), the motor will stall and the motor will immediately stop rotating. When the motor is started again, the motor will rotate in the opposite direction, driving the lever 2150 to slide towards the reverse dead point position. Since the lever stop 23104 on the leg bracket assembly 230 is clamped with the lever 2150, and the leg bracket assembly 230 can rotate around the rotating shaft 220, when the reduction motor 2110 drives the lever 2150 to slide back and forth, it will synchronously drive the leg bracket assembly 230 to swing left and right around the rotating shaft 220, that is, the retraction and lowering of the leg bracket assembly 230 are realized;

[0065] The electric retractable landing gear assembly 20 is extended close to the outrigger 1101 from below the UAV main body assembly 10. The second mounting plane 21701 at the top of the electric retractable landing gear assembly 20 gradually fits against the first mounting plane 1605 at the bottom of the tripod mounting base 160. At the same time, the fifth screw through-hole 21702 at the top of the electric retractable landing gear assembly 20 is aligned with the second external thread 1703 of the stud bolt 170 at the bottom of the tripod mounting base 160 and sleeved on the second external thread 1703 until the second mounting plane 21701 abuts tightly against the first mounting plane 1605. Finally, the electric retractable landing gear assembly 20 is fixed to the tripod mounting base 160, that is, fixed to the UAV main body assembly 10, by using the wing nut 30.

[0066] Thus, all the assembly between the electric retractable landing gear and the UAV is completed. The disassembly process is the reverse operation. When carrying out routine packaging and transportation, only a few wing nuts need to be loosened by hand to complete the disassembly and assembly of the electric retractable landing gear. The tripod assembly and the landing gear motor control assembly can be regarded as a whole, which can be conveniently packaged and transported without further disassembly. When it is necessary to repair and replace the parts of the electric retractable landing gear, only a few screws need to be unscrewed to complete the operation. It has the characteristics of simple structure, convenient operation, and being convenient for the transportation, repair and replacement of the UAV.

[0067] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrically retractable landing gear for a drone, characterized in that: It includes a drone main body component, an electric retractable landing gear and a butterfly nut. The drone main body component and the electric retractable landing gear are positioned by a plurality of stud bolts and fastened by butterfly nuts, thereby realizing a modular assembly that is easy to repair and replace. It also includes an electrical part, which realizes electrical communication between the landing gear and the drone main body components through two pairs of quick connectors at the end of the reduction motor and the bottom of the drone main body.

2. The electrically retractable landing gear of a UAV as claimed in claim 1, characterized in that: The drone main body assembly includes a drone main body, a first screw, a first clamp, a second clamp, a hexagonal nut, a tripod mounting seat and a stud bolt. The first clamp and the second clamp are connected and fixed to the tripod mounting seat by the first screw, and the hexagonal nut and the stud bolt are assembled on the tripod mounting seat.

3. The electrically retractable landing gear of a UAV as claimed in claim 2, characterized in that: The drone body is provided with two extending arms symmetrically on the left and right, a first curved surface is provided on the outer side of the extending arms, a limiting hole is provided on the bottom of the extending arms, and two first quick connectors are provided on the bottom of the drone body.

4. The electrically retractable landing gear of a UAV as claimed in claim 2, characterized in that: A second curved surface is provided on the inner side of the first clamp, and first screw holes are provided on the left and right sides; a third curved surface is provided on the inner side of the second clamp, and second screw holes are provided on the left and right sides; a first threaded hole is provided on the top of the tripod mounting seat, and a fourth curved surface is provided in the middle; a limiting column is provided on the fourth curved surface, and a third screw hole and a first mounting plane are provided on the bottom, and a first flange slot is provided on the first mounting plane; the stud bolt is provided with a first external thread, a first flange plate and a second external thread; the limiting column of the tripod mounting seat is assembled with the limiting hole of the drone body, the fourth curved surface is fitted with the first curved surface from below, the second curved surfaces and the third curved surfaces of the first clamp and the second clamp are fitted with the first curved surface from above, and the first screw hole and the second screw hole are aligned with the first threaded hole, and the four are fastened with the first screw; the first external thread of the stud bolt passes through the third screw hole, the first flange plate is assembled into the first flange slot, and the hexagonal nut fixes the stud screw to the tripod fixing seat from behind.

5. The electrically retractable landing gear for a UAV as claimed in claim 1, characterized in that: The electrically retractable landing gear comprises a landing gear motor control assembly, a rotating shaft, a tripod assembly and a third screw, and the landing gear motor control assembly is connected to the tripod assembly via the rotating shaft.

6. The electrically retractable landing gear of a UAV as claimed in claim 5, characterized in that: The landing gear motor control assembly includes a reduction motor, a second screw, a first bearing, a lead screw, a lever, a second bearing and a motor mounting seat. The main shaft of the reduction motor is fixedly connected to the lead screw through a motor output shaft, the lever is installed on the lead screw, and the lead screw is connected to the motor mounting seat through the first bearing, the second bearing.

7. The electrically retractable landing gear of a UAV as claimed in claim 6, characterized in that: The reduction motor is provided with a fourth screw through hole, an output shaft is provided at the end of the axis, a cable extends from the back of the reduction motor, and a second quick connector is provided at the end of the cable; a third external thread is provided in the middle of the screw rod, a first cylinder is provided at the front end, an output shaft slot is provided on the side of the first cylinder, and a second cylinder is provided at the end.

8. The electrically retractable landing gear of a UAV as claimed in claim 7, characterized in that: A third cylinder is arranged in the middle of the lever, fourth cylinders are symmetrically arranged on both sides of the third cylinder, and a second threaded hole is arranged in the middle of the third cylinder.

9. The electrically retractable landing gear of a UAV as claimed in claim 8, characterized in that: A second mounting plane is provided on the top of the motor mounting seat, a fifth screw hole and a first square groove are provided on the second mounting plane, a second mounting plane is provided on the front end, a first circular hole and a third threaded hole are provided on the second mounting plane, a first bearing hole is provided in front of the first circular hole, a second circular hole is provided at the rear end of the motor mounting seat, a second bearing hole is provided in front of the second circular hole, second square grooves and a third circular hole are provided on the left and right sides of the motor mounting seat, a second flange slot is provided in front of the third circular hole, and a sixth screw hole is provided at the rear; a fifth cylinder is provided on the rotating shaft, a second flange is provided at the rear of the fifth cylinder, and a fourth threaded hole is provided at the front end of the fifth cylinder.

10. The electrically retractable landing gear of a UAV as claimed in claim 9, characterized in that: The tripod assembly includes a tripod joint, a vertical rod, a T-shaped adapter, a cross rod and a foam tube, wherein the tripod joint is plugged into one end of the vertical rod, the other end of the vertical rod is installed on the cross rod through the T-shaped adapter, and the foam tube is installed at both ends of the cross rod; a fork structure is provided at the rear end of the tripod joint, a fourth circular hole is provided in the middle of the fork structure, bosses are provided on both sides of the fourth circular hole, two lever blocks are provided at the end of the fork structure, a lever slide groove is provided in the middle of the lever block, a third groove is provided in the middle of the lever slide groove, a sixth cylinder is provided at the front end of the tripod joint, and the sixth cylinder A first vertical rod bonding groove is provided in the middle; a seventh cylinder is provided in the vertical direction of the T-type adapter, a second vertical rod bonding groove is provided in the middle of the seventh cylinder, an eighth cylinder is provided in the horizontal direction of the T-type adapter, a cross bar bonding groove is provided in the middle of the eighth cylinder; the cross bar is symmetrically bonded and fixed in the cross bar bonding groove of the T-type adapter, one end of the vertical rod is bonded and fixed in the second vertical rod bonding groove of the T-type adapter, the other end of the vertical rod is bonded and fixed in the first vertical rod bonding groove of the tripod joint, the tripod joint is aligned in the center left and right with the T-type adapter, and the foam tube is assembled at both ends of the cross bar.

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