Permanent Magnet Adsorption and Release Device for UAV

Abstract

The present invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to a permanent magnet adsorption and release device for an unmanned aerial vehicle, which comprises a permanent magnet fixedly arranged on the bottom surface of a fixed block; the top surface of the fixed block is hinged to a bracket; a circular tube is fixedly arranged on the bracket; the circular tube is fixedly arranged on a mounting frame; the mounting frame is arranged on the unmanned aerial vehicle; and an angle control mechanism is further included for controlling the rotation angle of the fixed block on the bracket. Compared with the prior art, through the arrangement of the permanent magnet and the angle control mechanism, inspection work can be carried out by using the camera of the unmanned aerial vehicle when the flight mechanism of the unmanned aerial vehicle is in a stopped state, a large amount of power consumption is saved, and the continuous working time is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to a permanent magnet adsorption and release device for an unmanned aerial vehicle. Background Art

[0002] In industrial production and life, unmanned aerial vehicles are often used to carry out inspections, patrols, and checks on large equipment that is inaccessible to personnel, such as power supply towers, communication towers, offshore engineering equipment, large lifting equipment, large chemical equipment, large amusement facilities, and so on. These equipment have large and complex structures, and many tasks are high-altitude operations. Relying on manual operation methods not only involves heavy physical labor but also poses great risks.

[0003] Chinese Patent CN 106275436 A provides a sensor installation device with a self-breaking function for an unmanned aerial vehicle device to install a sensor. It includes a square box structure with a bottom plate, an electromagnet is provided on the back of the bottom plate for adsorbing the sensor, a sensor is installed inside the box structure, and multiple permanent magnets and a safety switch are included on the outside of the box structure. During the adsorption process of the permanent magnet, the mechanical switch is touched to cut off the power supply of the electromagnet, and by disconnecting the electromagnet, the function of installing the sensor is achieved, which is suitable for use in various semi-intelligent device installation devices and has a semi-automatic function. The main purpose of this patent is to install the sensor.

[0004] As the unmanned aerial vehicle inspection technology becomes more and more mature, the unmanned aerial vehicle can quickly fly to the vicinity of the target part of large equipment and facilities and hover, and then use the high-definition camera device of the unmanned aerial vehicle to complete the inspection work through close-range shooting. However, this method of using the hovering function of the unmanned aerial vehicle for inspection also has many drawbacks, such as being not suitable for long-term inspection, unable to inspect in a macro and static state, and unable to inspect the blind spots of the line of sight of individual equipment. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a permanent magnet adsorption and release device for an unmanned aerial vehicle to solve the problems that the unmanned aerial vehicle is not suitable for long-term inspection, unable to inspect in a macro and static state, and unable to inspect the blind spots of the line of sight of individual equipment and facilities.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] The permanent magnet adsorption and release device for the unmanned aerial vehicle includes a permanent magnet, which is fixedly arranged on the bottom surface of a fixed block; the top surface of the fixed block is hinged to a bracket; a circular tube is fixedly arranged on the bracket; the circular tube is fixedly arranged on a mounting frame; the mounting frame is arranged on the unmanned aerial vehicle; and an angle control mechanism is further included for controlling the rotation angle of the fixed block on the bracket.

[0008] Use a permanent magnet to adsorb on the inspection part of the equipment to be inspected. When the flight mechanism of the drone stops working, use the drone camera to achieve long-term, macro, static, and individual blind-spot observations. After the observation work is completed, the angle control mechanism acts, driving the fixed block to rotate around its hinge with the bracket, and then driving the permanent magnet arranged on the bottom surface of the fixed block to gradually reduce the contact area with the surface of the equipment to be inspected until the permanent magnet separates from the surface of the equipment to be inspected, ensuring the flight of the drone. The setting of the circular tube ensures the distance between the permanent magnet and the drone, avoiding external interference with the drone flight.

[0009] Preferably, the angle control mechanism includes a rope, a traction component, and a reset component; one end of the rope is connected to the fixed block, and the other end is connected to the traction component; the traction component can pull the fixed block to rotate around its hinge with the bracket through the rope; the reset component is arranged on the bracket and is used to reset the angle of the fixed block on the bracket. The traction component pulls the fixed block to rotate around its hinge with the bracket through the rope until the permanent magnet separates from the surface of the equipment to be inspected. At this time, the traction component resets, and the fixed block resets under the action of the reset component for the next adsorption work.

[0010] Preferably, the bracket includes a disc; four hinge rods are evenly arranged along the circumferential direction on the bottom surface of the disc; the end of the hinge rod is hinged to the fixed block through a hinge shaft; the reset component is a spring; the spring is arranged in the middle of the bottom surface of the disc; one end of the spring is fixedly connected to the top surface of the fixed block, and the other end is fixedly arranged on the disc; after the rope passes through the disc, it passes through the spring and is connected to the fixed block. The setting of the fixed block on the four hinge rods ensures the stability of adsorption on the surface of the equipment to be inspected.

[0011] Preferably, one end of the circular tube is fixedly arranged in the middle of the top surface of the disc; the rope is arranged inside the circular tube to avoid external interference with the rope and ensure smooth operation.

[0012] Preferably, a sleeve is fixedly arranged in the middle of the top surface of the disc; one end of the circular tube is press-fitted into the sleeve. The press-fitting setting ensures the stable connection between the circular tube and the disc, reduces the setting of connecting parts such as bolts, reduces the weight, and ensures the inspection duration of the drone.

[0013] Preferably, the other end of the circular tube is fixedly arranged on the convex platform of the mounting frame; a connecting plate is fixedly arranged on the convex platform; the traction component is arranged on the connecting plate; the connecting plate is arranged on the drone through bolts.

[0014] Preferably, the traction component includes a digital servo; the digital servo is fixedly arranged on the connecting plate; the output end of the digital servo is fixedly arranged with a servo arm; the end of the servo arm is connected to the rope. The digital servo acts to drive the servo arm to rotate a certain angle, pulling the fixed block at the other end of the rope to rotate. The digital servo has precise control and is convenient for controlling the rotation of the fixed block.

[0015] Preferably, through holes are provided on the convex platforms; the circular tubes are press-fitted into the through holes. This ensures the fixed installation of the circular tubes on the mounting brackets, reduces the use of connecting parts, decreases the weight, and extends the inspection duration of the drone.

[0016] Preferably, the center line of the output end of the digital servo is perpendicular to the center line of the circular tube. This ensures that the rudder arm pulls the rope.

[0017] Preferably, a circular groove is provided on the bottom surface of the mounting block; the permanent magnet is cemented in the circular groove to ensure stable setting, reduce the use of connecting parts, and decrease the weight.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention uses a permanent magnet to adsorb on the inspection part of the device to be inspected. When the flight mechanism of the drone stops working, the drone camera is used to perform long-term, macro, static, and individual line-of-sight dead-angle observation work. After the observation work is completed, the angle control mechanism acts to drive the fixed block to rotate around its hinge joint with the bracket, and then drive the permanent magnet arranged on the bottom surface of the fixed block to gradually reduce the contact area with the surface of the device to be inspected until the permanent magnet disengages from the surface of the device to be inspected, ensuring the flight of the drone.

[0020] Compared with the prior art, the structure of the present invention is simple and the weight is light. Through the arrangement of the permanent magnet and the angle control mechanism, the drone camera can be used for inspection work when the flight mechanism of the drone is in a stopped state, saving a large amount of power consumption and extending the continuous working time. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is an exploded structural diagram of the fixed block and the permanent magnet of the present invention;

[0023] Figure 3 is a schematic structural diagram of the bracket and the spring of the present invention.

[0024] In the figure: 1 - permanent magnet; 2 - fixed block; 3 - bracket; 4 - circular tube; 5 - mounting bracket; 6 - rope; 7 - hinge shaft; 8 - spring; 9 - digital servo; 10 - rudder arm; 201 - circular groove; 301 - disc; 302 - hinge rod; 303 - sleeve; 501 - convex platform; 502 - connecting plate. Detailed Embodiments

[0025] The present invention will be specifically described and illustrated below in conjunction with embodiments.

[0026] As Figure 1-2As shown in the figure, the permanent magnet adsorption and release device of the drone includes a permanent magnet 1, which is fixedly arranged on the bottom surface of a fixed block 2; the top surface of the fixed block 2 is hinged to a bracket 3; the bracket 3 is fixedly provided with a circular tube 4; the circular tube 4 is fixedly arranged on a mounting frame 5; the mounting frame 5 is arranged on the drone; it also includes an angle control mechanism for controlling the rotation angle of the fixed block 2 on the bracket 3.

[0027] A circular groove 201 is arranged on the bottom surface of the mounting block 2; the permanent magnet 1 is cemented in the circular groove 201. The permanent magnet 1 is cemented in the circular groove 201 to ensure stable setting, reduce the use of connecting parts and reduce the weight.

[0028] The permanent magnet 1 is used to adsorb on the inspection part of the equipment to be inspected. When the flight mechanism of the drone stops working, the drone camera is used to realize long-term, macro, static and individual blind spot observations.

[0029] After the observation work is completed, the angle control mechanism acts to drive the fixed block 2 to rotate around its hinge with the bracket 3, and then drive the permanent magnet 1 arranged on the bottom surface of the fixed block 2 to gradually reduce the contact area with the surface of the equipment to be inspected until the permanent magnet is separated from the surface of the equipment to be inspected, ensuring the flight of the drone. The setting of the circular tube 4 ensures the distance between the permanent magnet 1 and the drone, avoiding external interference during the flight of the drone.

[0030] The angle control mechanism includes a rope 6, a traction component and a reset component; one end of the rope 6 is connected to the fixed block 2, and the other end is connected to the traction component; the traction component can pull the fixed block 2 to rotate around its hinge with the bracket 3 through the rope 6; the reset component is arranged on the bracket 3 for resetting the angle of the fixed block 2 on the bracket 3.

[0031] The traction component pulls the fixed block 2 to rotate around its hinge with the bracket 3 through the rope 6 until the permanent magnet 1 is separated from the surface of the equipment to be inspected. At this time, the traction component resets, and the fixed block 2 resets under the action of the reset component for the next adsorption work.

[0032] In other alternative embodiments, the angle control mechanism is set as an electric push rod. The cylinder body of the electric push rod is fixed on the bracket 3, and the output end is hinged to one end of a fixed block 2. By the action of the electric push rod, the fixed block 2 is driven to rotate around its hinge with the bracket 3.

[0033] Such as Figure 1 、 3As shown, the bracket 3 includes a disc 301; four hinge rods 302 are evenly arranged along the circumferential direction on the bottom surface of the disc 301; the end of the hinge rod 302 is hinged to the fixed block 2 through a hinge shaft 7; the reset assembly is a spring 8; the spring 8 is arranged in the middle of the bottom surface of the disc 301; one end of the spring 8 is fixedly connected to the top surface of the fixed block 2, and the other end is fixedly arranged on the disc 301; after the rope 6 passes through the disc 301, it passes through the spring 8 and is connected to the fixed block 2.

[0034] The arrangement of the fixed block 2 on the four hinge rods 302 ensures the stability of adsorption on the surface of the device to be inspected. In other alternative embodiments, the reset assembly is a gas strut.

[0035] One end of the round tube 4 is fixedly arranged in the middle of the top surface of the disc 301; the rope 6 is arranged in the round tube 4 to avoid external interference with the rope 6 and ensure smooth operation.

[0036] A sleeve 303 is fixedly arranged in the middle of the top surface of the disc 301; one end of the round tube 4 is press-fitted into the sleeve 303.

[0037] A through hole is arranged on the boss 501; the round tube 4 is press-fitted into the through hole. The press-fitting arrangement ensures the stability of the connection between the round tube 4 and the disc 301, ensures the stability of the round tube 4 arranged on the mounting frame 5, reduces the setting of connecting parts such as bolts, reduces the weight, and ensures the inspection duration of the unmanned aerial vehicle.

[0038] The other end of the round tube 4 is fixedly arranged on the boss 501 of the mounting frame 5; a connecting plate 502 is fixedly arranged on the boss 501; the traction assembly is arranged on the connecting plate 502; the connecting plate 502 is arranged on the unmanned aerial vehicle through bolts.

[0039] The traction assembly includes a digital servo 9; the digital servo 9 is fixedly arranged on the connecting plate 502; the output end of the digital servo 9 is fixedly provided with a servo arm 10; the end of the servo arm 10 is connected to the rope 6. The digital servo 9 has precise control and is convenient for controlling the rotation of the fixed block 2.

[0040] The center line of the output end of the digital servo 9 is perpendicular to the center line of the round tube 4 to ensure that the servo arm 10 pulls the rope 6.

[0041] In other alternative embodiments, the traction assembly is a motor and a disc arranged at the output end of the motor, and the rope 6 can be wound around the disc. During use, the unmanned aerial vehicle carries the battery of the digital servo 9, and the battery is electrically connected to the digital servo 9.

[0042] Although the present invention has been described in detail by means of the accompanying drawings and in combination with the embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope covered by the present invention.

Claims

1. A permanent magnet adsorption and release device for an unmanned aerial vehicle, comprising a permanent magnet (1), characterized in that, The permanent magnet (1) is fixedly arranged on the bottom surface of the fixed block (2); the top surface of the fixed block (2) is hinged to the bracket (3); the bracket (3) is fixedly provided with a circular tube (4); the circular tube (4) is fixedly arranged on the mounting frame (5); the mounting frame (5) is arranged on the drone; and an angle control mechanism is further included, which is used to control the rotation angle of the fixed block (2) on the bracket (3). The angle control mechanism includes a rope (6), a traction component and a reset component; one end of the rope (6) is connected to the fixed block (2), and the other end is connected to the traction component; the traction component can pull the fixed block (2) to rotate around its hinge with the bracket (3) through the rope (6); the reset component is arranged on the bracket (3) and is used to reset the angle of the fixed block (2) on the bracket (3). The bracket (3) includes a disc (301); four hinge rods (302) are evenly arranged on the bottom surface of the disc (301) along the circumferential direction; the end of the hinge rod (302) is hinged to the fixed block (2) through a hinge shaft (7); the reset component is a spring (8); the spring (8) is arranged in the middle of the bottom surface of the disc (301); one end of the spring (8) is fixedly connected to the top surface of the fixed block (2), and the other end is fixedly arranged on the disc (301); after passing through the disc (301), the rope (6) passes through the spring (8) and is connected to the fixed block (2).

2. The permanent magnet adsorption and release device for unmanned aerial vehicle according to claim 1, characterized in that, One end of the circular tube (4) is fixedly arranged in the middle of the top surface of the disc (301); the rope (6) is arranged in the circular tube (4).

3. The permanent magnet adsorption and release device for unmanned aerial vehicle according to claim 1, characterized in that, A sleeve (303) is fixedly arranged in the middle of the top surface of the disc (301); one end of the circular tube (4) is press-fitted in the sleeve (303).

4. The permanent magnet adsorption and release device for an unmanned aerial vehicle according to claim 2, wherein, The other end of the circular tube (4) is fixedly arranged on the boss (501) of the mounting frame (5); a connecting plate (502) is fixedly arranged on the boss (501); the traction component is arranged on the connecting plate (502); the connecting plate (502) is arranged on the drone through bolts.

5. The permanent magnet adsorption and release device for unmanned aerial vehicle according to claim 4, wherein The traction component includes a digital servo (9); the digital servo (9) is fixedly arranged on the connecting plate (502); the output end of the digital servo (9) is fixedly provided with a servo arm (10); the end of the servo arm (10) is connected to the rope (6).

6. The permanent magnet adsorption and release device for unmanned aerial vehicle according to claim 4, characterized in that, A through hole is arranged on the boss (501); the circular tube (4) is press-fitted in the through hole.

7. The permanent magnet adsorption and release device for the unmanned aerial vehicle according to claim 5, characterized in that, The center line of the output end of the digital servo (9) is perpendicular to the center line of the circular tube (4).

8. The permanent magnet adsorption and release device for the unmanned aerial vehicle according to claim 1, characterized in that, A circular groove (201) is arranged on the bottom surface of the mounting block (2); the permanent magnet (1) is cemented in the circular groove (201).

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