Low-altitude inspection unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a low-altitude inspection unmanned aerial vehicle which comprises an unmanned aerial vehicle body and connecting arms fixedly installed at the four corners of the unmanned aerial vehicle body. When the unmanned aerial vehicle needs to fly at a low altitude, due to the fact that the number of sundries at the low altitude is larger than that at the high altitude and the sundries are more likely to be influenced by leaves, weeds and the like, the first protection net can be installed at the upper end of the protection frame in the actual use process, and therefore the unmanned aerial vehicle can be protected from being damaged; according to the low-altitude inspection unmanned aerial vehicle, the propellers are protected through the first protective net, sundries are prevented from falling onto the propellers to damage the propellers, the protective devices can be correspondingly added according to the use requirements, the first protective net can be added to protect the propellers when low-altitude flight is needed, the first protective net can be detached when high-altitude flight is needed, and the protective devices are convenient to use. And the service life of the unmanned aerial vehicle can be prolonged while the weight is reduced.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a low-altitude inspection UAV. Background Technology

[0002] Unmanned aerial vehicles (UAVs), also known as drones, are unmanned aircraft controlled by radio remote control equipment and their own programmed control devices. The term "UAV" is actually a general term for unmanned aerial vehicles, which, from a technical perspective, can be categorized as: unmanned fixed-wing aircraft, unmanned vertical takeoff and landing aircraft, unmanned airships, unmanned helicopters, unmanned multi-rotor aircraft, and unmanned paragliders, among others. Compared to manned aircraft, they have advantages such as smaller size, lower cost, ease of use, lower requirements for the operational environment, and stronger battlefield survivability.

[0003] To ensure long-lasting and stable flight, existing drones are generally designed with a simple structure and light weight. They often lack corresponding protective structures for their propellers. As a result, when such drones need to fly at low altitudes, they are easily affected by debris, leaves, and other objects at low altitudes, making them unsuitable for low-altitude operations. On the other hand, drones with protective structures are difficult to disassemble and assemble, and require more time for cleaning and maintenance. Summary of the Invention

[0004] The purpose of this utility model is to provide a low-altitude inspection drone to solve the problems mentioned in the background art. Existing drones, in order to extend their flight time and ensure stable flight, generally have a simple structure and are lightweight. They often do not provide corresponding protective structures for their propellers. Therefore, when such drones need to fly at low altitudes, they are easily affected by debris, leaves, etc., and are not suitable for low-altitude operations. On the other hand, drones with protective structures are difficult to disassemble and assemble, and take a lot of time when cleaning and maintenance are required.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-altitude inspection drone, comprising a drone body and connecting arms fixedly installed at the four corners of the drone body. Each connecting arm has a propeller at one end and a protective frame fixedly installed on each connecting arm. The upper sidewall of the protective frame has several slots equidistantly spaced, and the inner wall of the protective frame has several sliding grooves equidistantly spaced. The slots communicate with the sliding grooves, and one end of each sliding groove has a locking groove. A connecting frame is slidably installed inside the protective frame, and a protective net is fixedly installed on the connecting frame. Connecting components are equidistantly spaced on the outer side of the connecting frame, and the connecting components are movably connected within the slots.

[0006] Preferably, the connecting assembly includes a connecting block 1 that is fixedly installed at equal intervals on the outside of the connecting frame. Each connecting block 1 has a connecting groove 1. Each connecting groove 1 has a limiting block that is slidably installed in it. The side wall of the limiting block and the upper side wall of the inner wall of the connecting groove 1 are provided with a plurality of slots at equal intervals. A spring is fixedly installed between the side wall of the limiting block and the inner wall of the connecting groove 1.

[0007] Preferably, the connecting block is slidably connected within the slot and the groove, and the limiting block is slidably connected within the slot.

[0008] Preferably, the lower two side walls of the protective frame are provided with mounting grooves, and arc-shaped plates are slidably installed in the mounting grooves. Protective netting is fixedly installed on the side of each arc-shaped plate.

[0009] Preferably, a fixing block is fixedly installed on both side walls of the arc-shaped plate, and a connecting groove 2 is formed between both side walls of the fixing block, and a connecting groove 3 is formed between the upper and lower walls of the fixing block.

[0010] Preferably, connecting blocks two are fixedly installed on both side walls of the protective frame, and connecting blocks three are fixedly installed on both side walls of the connecting blocks two. The connecting blocks three are slidably connected in the connecting groove two, and pins are slidably installed on each connecting block three. The pins are slidably connected to the connecting groove three.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The drone can be protected by a protective frame around the propeller to prevent damage to the propeller blades from debris during flight. When the drone needs to fly at low altitudes, there is more debris at low altitudes than at high altitudes, and the propeller blades are more susceptible to damage from leaves and weeds. In practical use, a protective net can be installed on the upper part of the protective frame to protect the propeller and prevent debris from falling onto it and causing damage. This low-altitude inspection drone can be equipped with additional protective devices according to usage requirements. When low-altitude flight is required, the protective net can be added for protection, and when high-altitude flight is required, the protective net can be removed to reduce weight and extend the drone's service life.

[0013] 2. With the cooperation of connecting block one, connecting groove one, limiting block, spring, arc plate, protective net two, fixing block, connecting groove two and connecting groove three, the device can quickly protect the upper end of the drone propeller through the connecting components during use, and at the same time provide protection for the lower end of the propeller through the plug-in method. It has a large protection range for the propeller that provides power to the drone, and is convenient and quick to install and remove. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the protective frame system of this utility model;

[0016] Figure 3 This is a three-dimensional exploded view of the protective frame system of this utility model;

[0017] Figure 4 This is a cross-sectional three-dimensional structural diagram of the protective frame system of this utility model;

[0018] Figure 5 For the present utility model Figure 4 Enlarged 3D structural diagram at point A.

[0019] In the diagram: 1. UAV body; 2. Connecting arm; 21. Propeller; 3. Protective frame; 31. Slot; 32. Slide groove; 33. Slot; 34. Mounting slot; 35. Connecting block two; 36. Connecting block three; 37. Pin; 4. Connecting frame; 41. Protective net one; 42. Connecting assembly; 421. Connecting block one; 422. Connecting slot one; 423. Limiting block; 424. Spring; 5. Arc plate; 51. Protective net two; 52. Fixing block; 53. Connecting slot two; 54. Connecting slot three. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1 - Figure 3 A low-altitude inspection drone includes a drone body 1 and connecting arms 2 fixedly installed at the four corners of the drone body 1. Each connecting arm 2 has a propeller 21 at one end and a protective frame 3 fixedly installed on each connecting arm 2. The upper side wall of the protective frame 3 has several slots 31 equidistantly opened, and the inner wall of the protective frame 3 has several sliding grooves 32 equidistantly opened. The slots 31 and sliding grooves 32 are connected. Each end of the sliding groove 32 has a slot 33. A connecting frame 4 is slidably installed inside the protective frame 3. A protective net 41 is fixedly installed on the connecting frame 4. Connecting components 42 are equidistantly arranged on the outer side of the connecting frame 4 and are movably connected in the slots 31.

[0022] In this embodiment: When the drone is in use, the protective frame 3 can be fixedly installed on the connecting arm 2. The protective frame 3 can protect the propeller 21 from damage caused by debris around it during drone flight. When the drone needs to fly at low altitude, since there are more debris at low altitude and it is more easily affected by leaves and weeds, a protective net 41 can be installed on the upper end of the protective frame 3 to protect the propeller 21 and prevent debris from falling onto it and causing damage. The low-altitude inspection drone can add protective devices according to usage requirements. When low-altitude flight is required, the protective net 41 can be added for protection. When high-altitude flight is required, the protective net 41 can be removed to reduce weight and extend the drone's service life.

[0023] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figure 2 - Figure 5 The connecting component 42 includes connecting blocks 421 that are fixedly installed at equal intervals on the outside of the connecting frame 4. Each connecting block 421 has a connecting groove 422. Each connecting groove 422 has a limiting block 423 that is slidably installed in it. The side wall of the limiting block 423 and the upper side wall of the inner wall 3 of the connecting groove 422 have several slots 31 that are equidistant from each other. A spring 424 is fixedly installed between the side wall of the limiting block 423 and the inner wall of the connecting groove 422. The connecting block 421 can slide in cooperation with the sliding groove 32, and the spring 424 can automatically push the limiting block 423 outward and slide it into the slot 33 to complete the installation and fixation of the protective net 41.

[0024] Connecting block 421 is slidably connected in slot 31 and slide 32, and limiting block 423 is slidably connected in slot 33.

[0025] The lower end of the protective frame 3 has mounting grooves 34 on both side walls. Arc plates 5 are slidably installed in the mounting grooves 34. Protective nets 51 are fixedly installed on the sides of the arc plates 5. The protective nets 51 can protect the lower end of the propeller 21.

[0026] Both sides of the curved plate 5 are fixedly installed with fixing blocks 52. Both sides of the fixing blocks 52 are provided with a second connecting groove 53, and the upper and lower walls of the fixing blocks 52 are provided with a third connecting groove 54.

[0027] Connecting blocks 2 35 are fixedly installed on both sides of the protective frame 3. Connecting blocks 36 are fixedly installed on both sides of the connecting blocks 2 35. Connecting blocks 36 are slidably connected in the connecting groove 2 53. Pins 37 are slidably installed on each connecting block 36. Pins 37 are slidably connected to the connecting groove 3 54. The installation and fixing of the protective nets 2 51 on both sides can be completed by the cooperation of the fixing block 52 and the connecting block 3 36.

[0028] In this embodiment: when the drone needs to fly at low altitude, the connecting block 421 on the side of the connecting frame 4 can be slid down along the slot 31 onto the protective frame 3, and then rotated along the slide groove 32. During rotation, the limiting block 423 on the connecting block 421 can be squeezed and slid into the connecting groove 422. When the connecting block 421 rotates in the slide groove 32 and contacts the other side wall of the slide groove 32, the limiting block 423 can be automatically pushed outward and slid into the slot 33 under the action of the spring 424. At this time, the fixed installation of the protective net 41 can be automatically completed under the action of the limiting block 423. When flying at low altitude, the lower end of the protective net 41 can be fixed. Protection is equally important, so arc-shaped plates 5 can be inserted into the mounting slots 34 on both sides. The arc-shaped plates 5 are equipped with a second protective net 51. When the two arc-shaped plates 5 are inserted into the protective frame 3, the fixing blocks 52 on both sides slide along the second connecting block 36 to the second connecting block 35. Then, the protective frame and the arc-shaped plates 5 are fixed by the pins 37 to complete the installation of the second protective net 51. When using this device, the upper end of the drone propeller 21 can be quickly protected by the connecting component 42. At the same time, the lower end of the propeller 21 is protected by the plug-in method. The protection range of the propeller 21 that provides power to the drone is large, and the disassembly and assembly are convenient and quick.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-altitude inspection unmanned aerial vehicle, comprising an unmanned aerial vehicle body (1) and a connecting arm (2) fixedly installed at four corners of the unmanned aerial vehicle body (1), one end of the connecting arm (2) is provided with a propeller (21), characterized in that: The connecting arm (2) is fixedly installed with a protection frame (3), the upper end side wall of the protection frame (3) is equidistantly provided with a plurality of slot openings (31), the inner wall of the protection frame (3) is equidistantly provided with a plurality of sliding grooves (32), the slot opening (31) is communicated with the sliding groove (32), one end of the sliding groove (32) is provided with a clamping groove (33), the protection frame (3) is slidably installed with a connecting frame (4), the connecting frame (4) is fixedly installed with a protective net (41), the outer side of the connecting frame (4) is equidistantly provided with a connecting assembly (42), and the connecting assembly (42) is movably connected in the slot opening (31).

2. The low-altitude inspection unmanned aerial vehicle according to claim 1, wherein: The connecting assembly (42) comprises a connecting block one (421) fixedly installed on the outer side of the connecting frame (4), a connecting groove one (422) is formed in the connecting block one (421), a limiting block (423) is slidably installed in the connecting groove one (422), and a spring (424) is fixedly installed between the side wall of the limiting block (423) and the inner wall of the connecting groove one (422).

3. The low-altitude inspection unmanned aerial vehicle according to claim 2, characterized in that: The connecting block one (421) is slidably connected in the slot opening (31) and the sliding groove (32), and the limiting block (423) is slidably connected in the clamping groove (33).

4. The low-altitude inspection unmanned aerial vehicle according to claim 3, characterized in that: The lower end of the protection frame (3) is provided with an installation groove (34) on both side walls, the installation groove (34) is slidably installed with an arc-shaped plate (5), and the side of the arc-shaped plate (5) is fixedly installed with a protective net (51).

5. The low-altitude inspection unmanned aerial vehicle according to claim 4, characterized in that: The two side walls of the arc-shaped plate (5) are fixedly installed with a fixed block (52), the two side walls of the fixed block (52) are commonly provided with a connecting groove two (53), and the upper and lower walls of the fixed block (52) are commonly provided with a connecting groove three (54).

6. The low-altitude inspection unmanned aerial vehicle according to claim 5, characterized in that: The two side walls of the protection frame (3) are fixedly installed with a connecting block two (35), the two side walls of the connecting block two (35) are fixedly installed with a connecting block three (36), the connecting block three (36) is slidably connected in the connecting groove two (53), the connecting block three (36) is slidably installed with a latch (37), and the latch (37) is slidably connected with the connecting groove three (54).

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