Multi-rotor drone and method of using the same

Abstract

The present application provides a multi-rotor UAV and a method for using the same. The multi-rotor UAV comprises a body, an arm assembly, an image acquisition assembly and a landing gear assembly. The body comprises a cover and an outer shell of an integrated structure. The body shell and the cover constitute a closed space to prevent rain from entering the interior of the body. The arm assembly comprises an arm, a first motor, a rain cover and a propeller. The rain cover covers the first motor in a horizontal direction to prevent rain from entering the interior of the first motor. The image acquisition assembly comprises a load mounting frame and a gimbal camera. The load mounting frame is connected to the bottom of the body. The gimbal camera is arranged on the load mounting frame to acquire images of the transmission line. The landing gear assembly comprises a landing gear fixing seat, an aluminum alloy bracket, a supporting carbon tube and a servo. The servo rotates the supporting carbon tube in the ascending plane of the multi-rotor UAV to achieve the purpose of retracting and releasing the supporting carbon tube.

Description

Technical Field

[0001] The present application relates to the field of power transmission line inspection equipment, and in particular to a multi-rotor UAV and a method for using the same. Background Art

[0002] A drone is an aircraft with a power unit but no operator. It uses aerodynamics to overcome its own weight, can fly autonomously or remotely, and can be used once or recycled multiple times. It is widely used in scientific research, civil or military fields. Drones include fixed-wing drones and multi-rotor drones. Compared with fixed-wing drones, multi-rotor drones have the advantages of simple structure, flexible control, easy operation, vertical take-off and landing, etc., which can meet the requirements of power transmission line inspection.

[0003] At present, the fuselage of a multi-rotor drone generally includes a shell, an arm and a landing gear. The arm is fixedly connected to the shell, and the landing gear is fixedly connected to the shell or the arm. The shell and the arm are mostly made of plastic. When assembling a multi-rotor drone, multiple plastic parts are connected to form a complete multi-rotor drone shell and arm by relying on the tension of multiple plastic parts to match the slots or screws. The tail end of the arm is equipped with a power device, which includes a first motor and blades. During the multi-rotor drone's power line inspection, the image acquisition device carried by the drone is connected to the bottom of the drone and is located between the two landing gears. The first motor drives the blades to rotate, so that the drone and its carried image acquisition device can fly in the air.

[0004] However, when the assembled multi-rotor drone performs power transmission line inspection tasks on rainy days, rainwater will flow into the shell through the gaps between the plastic parts. The shell contains various circuits, which can easily cause a short circuit in the shell. Rainwater will also enter the motor, causing a short circuit in the motor. The landing gear of multi-rotor drones is basically fixed and cannot be folded and lowered, which increases the resistance of the multi-rotor drone during flight, shortens the flight time of the multi-rotor drone, and hinders the image acquisition of the camera, resulting in a small shooting range, which affects the inspection effect of the power transmission line. Summary of the invention

[0005] The present application provides a multi-rotor drone and a method for using the same, in order to solve the problems in the prior art of rain causing short circuits in the multi-rotor drone housing and the internal circuits of the motor, and a small camera shooting range due to the fixed landing gear.

[0006] The present application provides a multi-rotor UAV, which adopts a remote control flight mode and is used for inspecting power transmission lines. The multi-rotor UAV comprises: a body, an arm assembly, an image acquisition assembly, and a landing gear assembly;

[0007] The machine body comprises a machine body shell and a machine cover, the machine body shell is an integrated structure, the machine cover is hinged to the machine body shell, a quick-release mounting part is provided on the machine body shell, the quick-release mounting part is used to form a closed space with the machine body shell and the machine cover, a plurality of connecting ends are evenly distributed on the peripheral side of the machine body shell, and the connecting ends are used to connect the machine arm assembly;

[0008] The arm assembly includes an arm, a first motor, a rain cover and a propeller. The arm is a hollow structure. A fixing port and a nut are provided at the end of the arm. The nut is sleeved on the outside of the fixing port. The fixing port is sleeved on the connecting end. The nut is used to tighten the fixing port. The first motor is located at the end of the arm away from the fixing port. The output end of the first motor is fixedly connected to the rain cover and the propeller in sequence. The rain cover covers the first motor in the horizontal direction. The propeller is used to provide flight power for the multi-rotor drone.

[0009] The image acquisition assembly includes a load mounting frame and a pan-tilt camera, wherein the load mounting frame is connected to the bottom of the body through a mounting plate, and the pan-tilt camera is arranged on the load mounting frame, and the pan-tilt camera is used to acquire images of the power transmission line;

[0010] The landing gear assembly includes a landing gear fixing seat, an aluminum alloy bracket, a supporting carbon tube and a servo. The landing gear fixing seat is sleeved on the connecting end. The landing gear assembly is fixedly connected to the body through the landing gear fixing seat. The aluminum alloy bracket is located between the landing gear fixing seat and the supporting carbon tube. The supporting carbon tube is a T-shaped structure. The supporting carbon tube is hinged to the landing gear fixing seat through the aluminum alloy bracket. The servo is arranged on the aluminum alloy bracket. The servo is used to rotate the supporting carbon tube within the rising plane of the multi-rotor UAV. A GPS antenna and an image transmission antenna are provided on the landing gear fixing seat. The GPS antenna is used to determine the position of the multi-rotor UAV, and the image transmission antenna is used to transmit images captured by the gimbal camera.

[0011] Optionally, a rubber strip is provided at a contact portion between the machine cover and the machine body shell, and the rubber strip is used to seal the contact portion between the machine cover and the machine body shell.

[0012] Optionally, a water retaining strip is provided on the bottom of the peripheral side of the machine body.

[0013] Optionally, the body shell, cover, arms and propellers are all made of resin-based carbon fiber materials.

[0014] Optionally, the rain cover is made of nylon fiberglass.

[0015] Optionally, an electronic speed regulator is provided inside the machine arm, and the electronic speed regulator is used to regulate the speed of the first motor.

[0016] Optionally, the electronic speed regulator is a foc sinusoidal wave electronic speed regulator.

[0017] Optionally, rubber sleeves are provided at both ends of the portion of the supporting carbon tube in contact with the ground.

[0018] Optionally, the load mounting bracket is provided with a second motor and a third motor, the output end of the second motor is fixedly connected to the mounting plate, the second motor is used to drive the load mounting bracket to rotate in a plane perpendicular to the rising direction of the multi-rotor UAV, and the output end of the third motor is fixedly connected to the gimbal camera, and the third motor is used to drive the gimbal camera to rotate in a plane parallel to the rising direction of the multi-rotor UAV.

[0019] The present application also provides a method for using a multi-rotor drone, the method comprising:

[0020] The machine cover is closed on the machine body shell by means of a quick-release mounting piece to form the machine body;

[0021] Sleeve the landing gear assembly onto the connecting end of the fuselage through the landing gear fixing seat;

[0022] Sleeve the arm assembly onto the connecting end through the fixing port, and tighten the fixing port by rotating the nut;

[0023] Fixing the load mounting frame of the image acquisition assembly to the bottom of the machine body through a mounting plate;

[0024] Starting the first motor to drive the propeller to rotate;

[0025] During the process of the multi-rotor UAV ascending to the target location, the steering gear rotates the supporting carbon tube along the ascending direction of the multi-rotor UAV;

[0026] When the multi-rotor drone reaches the target location, the second motor drives the load mounting frame to rotate in a plane perpendicular to the ascending direction of the multi-rotor drone, and the third motor drives the gimbal camera to rotate in a plane parallel to the ascending direction of the multi-rotor drone, so that the gimbal camera is aimed at the power transmission line;

[0027] After the multi-rotor drone completes the inspection of the power transmission line, the multi-rotor drone returns to the target location, and the steering gear rotates and supports the carbon tube along the descending direction of the multi-rotor drone;

[0028] After the multi-rotor drone lands on the ground, the first motor is turned off.

[0029] The present application provides a multi-rotor UAV and a method for using the same. The multi-rotor UAV comprises a body, an arm assembly, an image acquisition assembly and a landing gear assembly. The body comprises a cover and an outer shell of an integrated structure. The body shell and the cover constitute a closed space to prevent rain from entering the interior of the body. The arm assembly comprises an arm, a first motor, a rain cover and a propeller. The rain cover covers the first motor in a horizontal direction to prevent rain from entering the interior of the first motor. The image acquisition assembly comprises a load mounting frame and a gimbal camera. The load mounting frame is connected to the bottom of the body. The gimbal camera is arranged on the load mounting frame to acquire images of power transmission lines. The landing gear assembly comprises a landing gear fixing seat, an aluminum alloy bracket, a supporting carbon tube and a servo. The servo rotates the supporting carbon tube in the ascending plane of the multi-rotor UAV to achieve the purpose of retracting and releasing the supporting carbon tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 A schematic diagram of the structure of a multi-rotor drone provided in this application;

[0032] Figure 2 A schematic diagram of the body structure of a multi-rotor UAV provided in this application;

[0033] Figure 3 A schematic diagram of the structure of an arm assembly of a multi-rotor UAV provided in this application;

[0034] Figure 4 A schematic diagram of the structure of an image acquisition component of a multi-rotor drone provided in this application;

[0035] Figure 5 A schematic diagram of the landing gear assembly structure of a multi-rotor UAV provided in this application;

[0036] Figure 6 A schematic diagram of a flow chart of a method for using a multi-rotor drone provided in this application.

[0037] Among them, 1-body, 2-arm assembly, 3-image acquisition assembly, 4-landing gear assembly, 11-body shell, 111-quick release mounting parts, 12-machine cover, 13-connecting end, 14-rubber strip, 15-water retaining strip, 21-arm, 211-fixing port, 212-nut, 22-first motor, 23-rain cover, 24-propeller, 25-electronic speed regulator, 31-load mounting frame, 311-second motor, 312-third motor, 32-gimbal camera, 41-landing gear fixing seat, 42-aluminum alloy bracket, 43-support carbon tube, 431-rubber sleeve, 44-servo, 45-GPS antenna, 46-image transmission antenna. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The present application provides a multi-rotor drone, which is remotely controlled and used for inspecting power transmission lines. Figure 1 The multi-rotor UAV includes: a body 1, an arm assembly 2, an image acquisition assembly 3 and a landing gear assembly 4.

[0040] See also Figures 1 to 2 The fuselage 1 comprises a fuselage shell 11 and a cover 12. The fuselage shell 11 is an integrated structure. The interior of the fuselage shell 11 is bonded with a carbon fiber laminate using a room temperature curing adhesive, serving as a reinforcing structure of the fuselage shell 11 and providing an installation position for a flight control system module and a battery. The cover 12 is hinged to the fuselage shell 11. A quick-release mounting member 111 is provided on the fuselage shell 11. The quick-release mounting member 111 is preferably a rectangular sheet structure. The quick-release mounting member 111 can be rotatably connected to the fuselage. The housing 11, when the quick-release mounting piece 111 is rotated at a certain angle so that the quick-release mounting piece 111 contacts the machine cover 12, the quick-release mounting piece 111 is used to form a closed space between the body housing 11 and the machine cover 12; when the quick-release mounting piece 111 is rotated at a certain angle so that the quick-release mounting piece 111 is separated from the machine cover 12, the machine cover 12 is opened to facilitate quick replacement of the battery; a plurality of connection ends 13 are evenly distributed on the peripheral side of the body housing 11, and the connection ends 13 are used to connect the arm assembly 2.

[0041] See also Figure 3The arm assembly 2 includes an arm 21, a first motor 22, a rain cover 23 and a propeller 24. The arm 21 is a hollow structure. A fixing port 211 and a nut 212 are provided at the end of the arm 21. The nut 212 is sleeved on the outside of the fixing port 211. The outside of the fixing port 211 is provided with an external thread matching the internal thread of the nut 212. The fixing port 211 is sleeved on the connecting end 13. The nut 212 is rotated to tighten the fixing port 211. The first motor 22 is located on the arm 21 away from the At the end of the fixing port 211, the output end of the first motor 22 is fixedly connected to the rain cover 23 and the propeller 24 in sequence, the rain cover 23 covers the first motor 22 in the horizontal direction, and the first motor 22 drives the rain cover 23 to rotate, and the rain falling on the rain cover 23 will be thrown out and will not flow into the first motor 22, so as to protect the normal operation of the first motor 22 and ensure that the multi-rotor UAV can fly safely in a rainy environment. The propeller 24 is used to provide flight power for the multi-rotor UAV.

[0042] See also Figure 4 The image acquisition component 3 includes a load mounting frame 31 and a gimbal camera 32. The load mounting frame 31 is connected to the bottom of the body 1 through a mounting plate 33. The gimbal camera 32 is arranged on the load mounting frame 31, and the gimbal camera 32 is used to acquire images of the transmission line.

[0043] See also Figure 5 The landing gear assembly 4 includes a landing gear fixing seat 41, an aluminum alloy bracket 42, a supporting carbon tube 43 and a steering gear 44. The landing gear fixing seat 41 is sleeved with the connecting end 13. The landing gear assembly 4 is fixedly connected to the body 1 through the landing gear fixing seat 41. The aluminum alloy bracket 42 is located between the landing gear fixing seat 41 and the supporting carbon tube 43. The supporting carbon tube 43 is a T-shaped structure. The supporting carbon tube 43 is hinged to the landing gear fixing seat 41 through the aluminum alloy bracket 42. The steering gear 44 is arranged on the aluminum alloy bracket 42. The steering gear 44 is used to The supporting carbon tube 43 is rotated in the ascending plane of the rotor UAV. During the ascending process of the multi-rotor UAV, the servo 44 rotates the supporting carbon tube 43 in the ascending plane of the multi-rotor UAV so as to retract the supporting carbon tube 43. The gimbal camera 32 is not affected by the supporting carbon tube 43. The shooting range of the gimbal camera 32 is wide. A GPS antenna 45 and an image transmission antenna 46 are provided on the landing gear fixing seat 41. The GPS antenna 45 is used to determine the position of the multi-rotor UAV, and the image transmission antenna 46 is used to transmit the image captured by the gimbal camera 32.

[0044] See also Figure 2In order to enhance the waterproof effect of the machine body, a rubber strip 14 is provided at the contact portion between the machine cover 12 and the machine body shell 11 , and the rubber strip 14 is used to seal the contact portion between the machine cover 12 and the machine body shell 11 .

[0045] In a rainy environment, when the multi-rotor drone is inspecting, rainwater flows along the contour of the body 1 to the bottom of the body 1, and then may flow to the load mounting frame 31 and the gimbal camera 32, affecting the normal operation of the gimbal camera 32. A water retaining bar 15 is provided at the bottom of the peripheral side of the body 1. The water retaining bar 15 surrounds the load mounting frame 31. When rainwater flows onto the water retaining bar 15, it will drip naturally. The water retaining bar 15 protects the gimbal camera 32 from being affected by rainwater.

[0046] The body shell 11, the cover 12, the arm 21 and the propeller 24 are all made of resin-based carbon fiber material. The resin-based carbon fiber material can ensure that the overall strength of the multi-rotor drone remains unchanged, while reducing the overall weight of the multi-rotor drone and extending the flight time.

[0047] The rain cover 23 is preferably made of nylon fiber-reinforced material, which is light in weight and has good mechanical strength. The rain cover 23 will not break when rotating at high speed.

[0048] In order to control the flight speed of the multi-rotor drone, an electronic speed regulator 25 is provided inside the arm 21. The electronic speed regulator 25 is used to regulate the speed of the first motor 22. The electronic speed regulator 25 is a foc sine wave electronic speed regulator.

[0049] Rubber sleeves 431 are provided at both ends of the portion of the supporting carbon tube 43 that contacts the ground. When the multi-rotor drone lands, the rubber sleeves 431 can play a buffering role to reduce the vibration of the multi-rotor drone after contacting the ground.

[0050] See also Figure 4 The load mounting frame 31 is provided with a second motor 311 and a third motor 312. The output end of the second motor 311 is fixedly connected to the mounting plate 33. The second motor 311 is used to drive the load mounting frame 31 to rotate 360° in a plane perpendicular to the rising direction of the multi-rotor drone. The output end of the third motor 312 is fixedly connected to the gimbal camera 32. The third motor 312 is used to drive the gimbal camera 32 to rotate 360° in a plane parallel to the rising direction of the multi-rotor drone.

[0051] The present application provides a multi-rotor UAV, which includes a body 1, an arm assembly 2, an image acquisition assembly 3 and a landing gear assembly 4. The body 1 includes a cover 12 and an integrated shell 11, the body shell 11 and the cover 12 constitute a closed space to prevent rain from entering the interior of the body 1, the arm assembly 2 includes an arm 21, a first motor 22, a rain cover 23 and a propeller 24, the rain cover 23 covers the first motor 22 in the horizontal direction to prevent rain from entering the interior of the first motor 22, the image acquisition assembly 3 includes a load mounting frame 31 and a gimbal camera 32, the load mounting frame 31 is connected to the bottom of the body 1, the gimbal camera 32 is arranged on the load mounting frame 31 to capture images of the transmission line, and the landing gear assembly 4 includes a landing gear fixing seat 41, an aluminum alloy bracket 42, a supporting carbon tube 43 and a steering gear 44, the steering gear 44 rotates the supporting carbon tube 43 in the ascending plane of the multi-rotor UAV to achieve the purpose of retracting and releasing the supporting carbon tube.

[0052] This application provides a method for using a multi-rotor drone. Figure 6 , the method for using the multi-rotor drone includes:

[0053] Step S1, closing the machine cover 12 on the machine housing 11 through the quick-release mounting member 111 to form the machine body 1.

[0054] The quick-release mounting piece 111 is preferably a rectangular sheet structure, and the quick-release mounting piece 111 is rotatably connected to the body shell 11. When the quick-release mounting piece 111 is rotated by a certain angle so that the quick-release mounting piece 111 contacts the machine cover 12, the machine cover 12 is closed on the body shell 11 to form the body 1. The quick-release mounting piece 111 is rotated by a certain angle so that the quick-release mounting piece 111 is separated from the machine cover 12, so that the battery in the body shell 11 is easily replaced.

[0055] Step S2 , sleeve the landing gear assembly 4 onto the connecting end 13 of the fuselage 1 through the landing gear fixing seat 41 .

[0056] A plurality of connection ends 13 are evenly distributed around the body 1 . The landing gear assembly 4 includes a landing gear fixing seat 41 , an aluminum alloy bracket 42 , a supporting carbon tube 43 and a servo 44 . The landing gear fixing seat 41 is sleeved on the connection end 13 to fix the landing gear assembly 4 on the body 1 .

[0057] Step S3 , sleeve the arm assembly 2 onto the connection end 13 through the fixing opening 211 , and rotate the nut 212 to tighten the fixing opening 211 .

[0058] The arm assembly 2 includes an arm 21, a first motor 22, a rain cover 23 and a propeller 24. The arm 21 is a hollow structure. A fixing port 211 and a nut 212 are provided at the end of the arm 21. The nut 212 is sleeved on the outside of the fixing port 211. The outside of the fixing port 211 is provided with an external thread matching the internal thread of the nut 212. The fixing port 211 is sleeved on the connecting end 13, and the nut 212 is rotated to tighten the fixing port 211.

[0059] Step S4 , fixing the load mounting frame 31 of the image acquisition assembly 3 to the bottom of the machine body 1 through the mounting plate 33 .

[0060] The image acquisition component 3 includes a load mounting frame 31 and a pan-tilt camera 32 . The pan-tilt camera 32 is disposed on the load mounting frame 31 , and the pan-tilt camera 32 acquires images of the power transmission line.

[0061] Step S5, starting the first motor 22 to drive the propeller 24 to rotate.

[0062] Step S6, when the multi-rotor drone ascends to the target location, the steering gear 44 rotates and supports the carbon tube 43 along the ascending direction of the multi-rotor drone.

[0063] In this step, the supporting carbon tubes 43 are retracted to prevent the supporting carbon tubes 43 from affecting the image acquisition of the power transmission line by the pan-tilt camera 32 .

[0064] Step S7, when the multi-rotor UAV reaches the target location, the second motor 311 drives the load mounting frame 31 to rotate in a plane perpendicular to the rising direction of the multi-rotor UAV, and the third motor 312 drives the gimbal camera 32 to rotate in a plane parallel to the rising direction of the multi-rotor UAV, so that the gimbal camera 32 is aimed at the power transmission line.

[0065] In this step, the gimbal camera 32 can rotate 360° in a plane perpendicular to the ascending direction of the multi-rotor drone and in a plane parallel to the ascending direction of the multi-rotor drone.

[0066] Step S8, after the multi-rotor drone completes the inspection of the power transmission line, the multi-rotor drone returns to the target location, and the steering gear 44 rotates and supports the carbon tube 43 along the descending direction of the multi-rotor drone.

[0067] In this step, the supporting carbon tube 43 is lowered to allow the multi-rotor UAV to land on the ground.

[0068] Step S9: After the multi-rotor drone lands on the ground, the first motor 22 is turned off.

[0069] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A multi-rotor drone, which adopts a remote control flight mode and is used for inspecting power transmission lines, characterized in that: The multi-rotor drone comprises: a body (1), an arm assembly (2), an image acquisition assembly (3) and a landing gear assembly (4); The machine body (1) comprises a machine body shell (11) and a machine cover (12); the machine body shell (11) is an integrated structure; the machine cover (12) is hinged to the machine body shell (11); a quick-release mounting component (111) is provided on the machine body shell (11); the quick-release mounting component (111) is a rectangular sheet structure; the quick-release mounting component (111) is rotatably connected to the machine body shell (11); the quick-release mounting component (111) is used to form a closed space between the machine body shell (11) and the machine cover (12); a plurality of connection ends (13) are evenly distributed on the circumference of the machine body shell (11); the connection ends (13) are used to connect to the machine arm assembly (2); The arm assembly (2) comprises an arm (21), a first motor (22), a rain cover (23) and a propeller (24); the arm (21) is a hollow structure; a fixing port (211) and a nut (212) are provided at the end of the arm (21); the nut (212) is sleeved on the outside of the fixing port (211); the fixing port (211) is sleeved on the connecting end (13); the nut (212) is used to tighten the fixing port (211); the first motor (22) is located at an end of the arm (21) away from the fixing port (211); an output end of the first motor (22) is fixedly connected to the rain cover (23) and the propeller (24) in sequence; the rain cover (23) covers the first motor (22) in a horizontal direction; and the propeller (24) is used to provide flight power for the multi-rotor drone; The image acquisition component (3) comprises a load mounting frame (31) and a pan-tilt camera (32); the load mounting frame (31) is connected to the bottom of the body (1) via a mounting plate (33); the pan-tilt camera (32) is arranged on the load mounting frame (31); and the pan-tilt camera (32) is used to acquire images of the power transmission line; The landing gear assembly (4) comprises a landing gear fixing seat (41), an aluminum alloy bracket (42), a supporting carbon tube (43) and a steering gear (44); the landing gear fixing seat (41) is sleeved with the connecting end (13); the landing gear assembly (4) is fixedly connected to the body (1) via the landing gear fixing seat (41); the aluminum alloy bracket (42) is located between the landing gear fixing seat (41) and the supporting carbon tube (43); the supporting carbon tube (43) is a T-shaped structure; the supporting carbon tube (43) is connected via the aluminum alloy bracket (42) to the connecting end (13); The aluminum alloy bracket (42) is hinged to the landing gear fixing seat (41), the steering gear (44) is arranged on the aluminum alloy bracket (42), the steering gear (44) is used to rotate the supporting carbon tube (43) in the ascending plane of the multi-rotor unmanned aerial vehicle, and the landing gear fixing seat (41) is provided with a GPS antenna (45) and an image transmission antenna (46), the GPS antenna (45) is used to determine the position of the multi-rotor unmanned aerial vehicle, and the image transmission antenna (46) is used to transmit images collected by the gimbal camera (32); The load mounting frame (31) is provided with a second motor (311) and a third motor (312); the output end of the second motor (311) is fixedly connected to the mounting plate (33); the second motor (311) is used to drive the load mounting frame (31) to rotate in a plane perpendicular to the ascending direction of the multi-rotor unmanned aerial vehicle; the output end of the third motor (312) is fixedly connected to the gimbal camera (32); the third motor (312) is used to drive the gimbal camera (32) to rotate in a plane parallel to the ascending direction of the multi-rotor unmanned aerial vehicle.

2. The multi-rotor drone according to claim 1, characterized in that: The contact portion between the machine cover (12) and the machine body shell (11) is provided with a rubber strip (14), and the rubber strip (14) is used to seal the contact portion between the machine cover (12) and the machine body shell (11).

3. The multi-rotor drone according to claim 1, characterized in that: A water retaining strip (15) is provided at the bottom of the peripheral side of the machine body (1).

4. The multi-rotor drone according to claim 1, characterized in that: The machine body shell (11), the machine cover (12), the machine arm (21) and the propeller (24) are all made of resin-based carbon fiber materials.

5. The multi-rotor drone according to claim 1, characterized in that: The rain cover (23) is made of nylon fiber-reinforced material.

6. The multi-rotor UAV according to claim 1, characterized in that: An electronic speed regulator (25) is provided inside the machine arm (21), and the electronic speed regulator (25) is used to regulate the speed of the first motor (22).

7. The multi-rotor UAV according to claim 6, characterized in that: The electronic speed regulator (25) is a foc sine wave electronic speed regulator.

8. The multi-rotor UAV according to claim 1, characterized in that: Rubber sleeves (431) are provided at both ends of the portion of the supporting carbon tube (43) that contacts the ground.

9. A method for using a multi-rotor drone, the method for using a multi-rotor drone being applied to the multi-rotor drone according to any one of claims 1 to 8, characterized in that: The method for using the multi-rotor drone includes: The machine cover (12) is closed on the machine housing (11) by means of a quick-release mounting member (111) to form a machine body (1); The landing gear assembly (4) is sleeved onto the connection end (13) of the machine body (1) via a landing gear fixing seat (41); The arm assembly (2) is sleeved onto the connection end (13) through the fixing opening (211), and the nut (212) is rotated to tighten the fixing opening (211); The load mounting frame (31) of the image acquisition assembly (3) is fixed to the bottom of the machine body (1) via a mounting plate (33); Starting the first motor (22) to drive the propeller (24) to rotate; When the multi-rotor drone ascends to a target location, the steering gear (44) rotates the supporting carbon tube (43) along the ascending direction of the multi-rotor drone; When the multi-rotor drone reaches the target location, the second motor (311) drives the load mounting frame (31) to rotate in a plane perpendicular to the ascending direction of the multi-rotor drone, and the third motor (312) drives the gimbal camera (32) to rotate in a plane parallel to the ascending direction of the multi-rotor drone, so that the gimbal camera (32) is aligned with the power transmission line; After the multi-rotor drone completes the inspection of the power transmission line, the multi-rotor drone returns to the target location, and the steering gear (44) rotates the supporting carbon tube (43) along the descending direction of the multi-rotor drone; After the multi-rotor drone lands on the ground, the first motor (22) is turned off.

Images