A drone inspection and monitoring device

Abstract

The present invention discloses a drone inspection and monitoring device, which belongs to the technical field of drone monitoring equipment, and includes an inspection and monitoring seat, wherein a cable inspection unit is arranged at the bottom of the inspection and monitoring seat, and the cable inspection unit is composed of an installation inspection mechanism and a cable internal and external inspection mechanism, which are respectively used to inspect the installation firmness of the cable and the temperature of the outer skin and the conductor. The present invention controls the movement of the cable internal and external inspection mechanism by a drone, and can sense the outer skin temperature of the inspection cable without blind spots, and detects the current flowing through the mutual inductance wire wound around the outer core through a clamp ammeter, so as to judge whether the internal resistance and temperature of the inspection cable are increased due to aging, thereby achieving the effect of all-round inspection of the cable, and through the installation inspection seat equipped with a permanent magnet and an electromagnet, the resistance of the cable when it moves into the inspection frame can be detected by installing an inspection pressure device, so as to judge whether this section of the inspection cable has the problem of loose installation.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle monitoring, and in particular to an unmanned aerial vehicle inspection and monitoring device. Background Art

[0002] UAVs, or unmanned aircraft, are unmanned aircraft that are controlled by radio remote control equipment and preset flight programs. UAVs are small in size and can flexibly shuttle in small spaces. In practical applications, UAVs can be used for aerial photography, wildlife observation, surveying and mapping, agricultural monitoring, power inspection, filming, etc., which brings great convenience to life and work. Among them, when conducting power inspections on cables in small spaces (such as cables installed in factories and cables laid underground (pipelines)), problems can be discovered in a timely manner and appropriate maintenance can be given.

[0003] When the cables suspended in the factory are in use, in order to ensure the safety of electricity use, it is necessary to use drones to conduct regular inspections of the cables. The current drone cable inspection method is to install a thermal imaging camera at the bottom to observe whether the heat is evenly distributed in various parts of the cable and whether there is skin damage on the outer surface of the cable, and use this as the cable damage detection standard. However, this drone inspection and monitoring method has the following problems:

[0004] When using drones to shoot cables, due to the limitation of shooting angles, when shooting one side of the cable, it is also necessary to shoot the other side of the cable, which reduces the inspection efficiency. In addition, during the shooting process, because there are often more than one cable laid, there may be cable obstructions, which will cause the camera to capture incomplete images of the heat distribution of various parts of the cable and whether the outer skin is damaged, resulting in inspection failure.

[0005] Cables suspended in the factory will cause internal circuit aging and increased internal resistance due to long-term use. However, since the outer sheath of the cable is mostly made of fire-proof and heat-insulating materials, when the cable is not damaged, only the outer surface temperature of the cable is imaged by a thermal imaging camera. The fire-proof and heat-insulating materials block the internal temperature, making the thermal imaging screen unable to effectively capture the abnormal cable temperature rise caused by internal circuit aging, reducing the accuracy of inspections. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art that when a thermal imaging camera is installed on a drone to conduct cable inspection and shooting, the inspection efficiency is reduced due to the limitation of the shooting angle, and the actual laying of more than one cable blocks the shooting of the inspection cable by the remaining cables, resulting in inspection failure, and when the outer skin of the cable is not damaged but the internal aging causes the cable temperature to rise, only the thermal imaging picture of the outer surface of the cable is shot, and the abnormality of the cable temperature rising due to the aging of the internal line cannot be effectively captured, resulting in reduced inspection accuracy. A drone inspection and monitoring device is proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A drone inspection and monitoring device comprises an inspection and monitoring seat installed at the bottom of the drone, which is used to inspect and monitor overhead cables. A cable inspection unit is arranged at the bottom of the inspection and monitoring seat, which is used to inspect abnormal conditions of the cables. The cable inspection unit consists of an installation inspection mechanism and a cable internal and external inspection mechanism. The installation inspection mechanism is used to inspect the installation firmness of the cables, and the cable internal and external inspection mechanism is used to inspect the outer skin of the cables and the temperature of the conductors.

[0009] The installation inspection mechanism comprises an inspection frame arranged at the bottom of the inspection monitoring seat, the inspection frame is provided with an inspection port on the side close to the cable, the inspection frame is movably connected with the inspection port through the installation inspection seat, and the inspection port is selectively closed, an installation detection bayonet is provided on the outer surface of the installation inspection seat, a permanent magnet is fixed on the side of the installation inspection seat away from the cable, an electromagnet that is attracted by the magnetic force of the permanent magnet is movably arranged on the top of the inspection frame, and an installation inspection pressure device is arranged on the top of the inspection frame to detect the firmness of the cable installation;

[0010] The cable internal and external inspection mechanism includes an outer skin temperature detection strip and a clamp ammeter arranged on the inspection frame. The outer skin temperature detection strip is provided with a temperature sensor for inspecting abnormal temperature on the outer surface of the cable. The inspection frame is provided with an inspection brush at the inspection port. The inspection frame and the inspection mounting seat are provided with an iron core electrically connected through the inspection brush, and a mutual inductance wire electrically connected to the clamp ammeter is wound around the iron core.

[0011] Preferably, the inspection frame is provided with an active slot on one side close to the cable, the active slot consists of a closed slot and an inspection slot arranged from low to high, and the inspection mounting seat is rotatably connected to the active slot by rotating a locking column.

[0012] Preferably, the installation detection bayonet is configured as an arc-shaped groove adapted to the cable diameter and is located at the top of the closed bayonet.

[0013] Preferably, the installation inspection pressure device is composed of a stabilizing seat and a pressure detection ring which are slidably connected to the electromagnet, and the sliding distance of the electromagnet in the stabilizing seat is limited by limiting rings at both ends of the electromagnet.

[0014] Preferably, the outer skin temperature detection strip is symmetrically arranged inside the inspection frame, and an outer skin temperature detection sub-strip is arranged on the side of the inspection mounting seat close to the outer skin temperature detection strip.

[0015] Preferably, an inspection conductive column is provided in the inspection installation seat, which is used to close the inspection port when the inspection installation seat is installed. When alternating current flows through the cable, it is electrically connected to the iron core to form a mutual inductance loop. The clamp ammeter detects the current size of the alternating current in the cable through the current size flowing through the mutual inductance wire.

[0016] Preferably, a repair marking mechanism is also provided at the bottom of the inspection and monitoring seat for repairing and marking the wires with abnormal temperatures, the repair marking mechanism comprises a repair marking bracket movably arranged on a side of the inspection installation seat close to the inspection frame, a driving rack meshing with the repair marking bracket is arranged in the inspection installation seat, a repair marking box is fixedly installed in the repair marking bracket, a repair roller is rotatably provided on the repair marking box close to the axis of the repair marking bracket, and the repair marking box is connected to a repair marking tank installed on the repair marking bracket.

[0017] Preferably, a driving gear meshing with a driving rack is disposed on the outer surface of the repair mark bracket, and a limiting slider movably connected to the inner surface of the repair mark bracket is slidably connected to the inner wall of the installation inspection seat.

[0018] Preferably, a repair mark opening is provided on the repair mark bracket. When the cable is not inspected, the repair mark opening is tilted downward. When an abnormal temperature of the outer skin is found during cable inspection, the flight trajectory of the drone is controlled to control the cable to pass through the repair mark opening and enter the inner side of the repair mark bracket.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the movement of the inspection monitoring seat and the cable internal and external inspection mechanism equipped with an inspection frame, the outer skin temperature of the inspection cable can be sensed without blind spots, and the alternating current flowing through the inspection cable generates an alternating magnetic field in the iron core, so that the current flowing through the mutual inductance wire wrapped around the outside of the iron core can be detected by a clamp ammeter to determine whether the internal resistance and temperature of the inspection cable are increased due to aging, thereby achieving the effect of all-round inspection of the cable.

[0021] 2. By installing an inspection seat equipped with a permanent magnet and cooperating with an electromagnet, the resistance of the cable when it moves into the inspection frame can be detected by installing an inspection pressure device, thereby determining whether this section of the inspection cable has a problem of loose installation.

[0022] 3. By using the inspection frame equipped with the outer skin temperature detection strip and the outer skin temperature detection sub-strip, a complete detection ring can be formed to detect whether the outer skin of the inspection cable is damaged and causes abnormal temperature. When the damaged part is detected, the damaged part is temporarily coated and marked by the repair marking bracket to facilitate the subsequent maintenance personnel to quickly locate and replace the damaged part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an unmanned aerial vehicle inspection and monitoring device proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of an unmanned aerial vehicle inspection and monitoring device proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the inspection frame cross section of a UAV inspection and monitoring device proposed by the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified view of the structure at center A;

[0027] Figure 5 For the present invention Figure 3 A magnified view of the structure at B in the middle;

[0028] Figure 6 This is an exploded view of a repair mark bracket and a repair mark box structure of a UAV inspection and monitoring device proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the azimuth movement of an inspection cable of an unmanned aerial vehicle inspection and monitoring device proposed by the present invention relative to an inspection installation base.

[0030] In the figure: 1. Inspection monitoring seat; 2. Inspection frame; 21. Movable card slot; 211. Closed card slot; 212. Inspection card slot; 3. Install inspection seat; 31. Install detection card port; 32. Permanent magnet; 33. Electromagnet; 34. Install inspection pressure device; 341. Stable seat; 342. Pressure detection ring; 35. Rotate locking column; 4. External skin temperature detection strip; 41. External skin temperature detection sub-strip; 5. Clamp ammeter; 51. Inspection brush; 52. Iron core; 53. Mutual inductance wire; 54. Inspection conductive column; 6. Repair mark bracket; 61. Drive rack; 62. Drive gear; 63. Limit slider; 64. Repair mark port; 7. Repair mark box; 71. Repair roller; 72. Repair mark tank. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example, see Figures 1 to 7A drone inspection and monitoring device includes an inspection and monitoring seat 1 installed at the bottom of the drone, which is used to inspect and monitor overhead cables. A cable inspection unit is provided at the bottom of the inspection and monitoring seat 1. The cable inspection unit is used to inspect abnormal conditions of the cables. The cable inspection unit consists of an installation inspection mechanism and a cable internal and external inspection mechanism. The installation inspection mechanism is used to inspect the installation firmness of the cable. The cable internal and external inspection mechanism is used to inspect the outer skin of the cable and the temperature of the conductor.

[0035] It should be noted that the cables for the inspection of the drone in the present invention are cables that are arranged side by side in the factory building, and the spacing between adjacent cables is appropriate and will not affect the inspection process of the inspection monitoring seat 1. The flight trajectory of the drone in the present invention is controlled by a remote control device or a self-prepared flight program. This is the flight control technology of the existing drone and will not be described in detail in the following.

[0036] like Figures 1 to 4 As shown, the inspection installation mechanism includes an inspection frame 2 arranged at the bottom of the inspection monitoring seat 1, and the inspection frame 2 is provided with an inspection port near the cable side, and the inspection frame 2 is movably connected with the inspection port through the inspection installation seat 3 to selectively close the inspection port, and an installation detection bayonet 31 is provided on the outer surface of the inspection installation seat 3, and a permanent magnet 32 ​​is fixed on the side of the inspection installation seat 3 away from the cable, and an electromagnet 33 that is magnetically attracted to the permanent magnet 32 ​​is movably provided on the top of the inspection frame 2 to generate attraction for the inspection installation seat 3, and an inspection pressure device 34 is provided on the top of the inspection frame 2 to detect the firmness of the cable installation;

[0037] Based on the above, the installation detection bayonet 31 is set to an arc-shaped groove adapted to the cable diameter and is located at the top of the closed bayonet 211, so that the cable placed in the installation detection bayonet 31 can be positioned, so that when the cable is squeezed to enter the inspection frame 2, the length of the rotating force arm of the installation inspection seat 3 is locked, so that when the installation inspection pressure device 34 detects the squeezing force of the electromagnet 33 as the permanent magnet 32 ​​moves, the force that prompts the permanent magnet 32 ​​to move is only related to the firmness of the cable installation, so as to achieve the effect of improving the accuracy of the pressure detection circle 342 on the squeezing force of the electromagnet 33;

[0038] It should be noted that: when the cable is fixed to the bottom of the suspension beam of the factory building through the suspension bracket, the inspection object of the inspection monitoring seat 1 is the cable set between the adjacent suspension brackets. The inspection monitoring seat 1 is controlled by the drone to control the inspection frame 2 to approach the cable, so that the cable can enter the inspection frame 2 through the outer side of the inspection seat 3, so that the subsequent cable internal and external inspection mechanism can detect the outer surface temperature and internal power supply of the cable in the frame during the flight of the drone;

[0039] Based on the above, if Figure 7As shown, when the inspection frame 2 needs to be set outside the inspection cable, the inspection monitoring seat 1 is controlled by the drone to change its position, so that the cable can be pushed from the installation detection bayonet 31 of the installation inspection seat 3 to enter the inspection frame 2. This is the displacement process of moving the installation inspection mechanism and the cable internal and external inspection mechanisms to the inspection position during cable inspection.

[0040] Similarly, when it is necessary to move the inspection frame 2 outside the cable, the inspection monitoring seat 1 is controlled to move so that the cable moves from the bottom of the inspection seat 3 to the top of one side of the inspection frame 2. After moving to the top, the inspection frame 2 is moved outward, and the inspection seat 3 is squeezed outward by the cable to open the inspection port and move the cable outside the inspection frame 2. This is the process of moving the cable out of the cable internal and external inspection mechanism at the end of the cable inspection.

[0041] Furthermore, an active slot 21 is provided on one side of the inspection frame 2 close to the cable. The active slot 21 consists of a closed slot 211 and an inspection slot 212 arranged from low to high. The inspection seat 3 is rotatably connected to the active slot 21 by rotating the locking column 35. The inspection pressure device 34 is composed of a stable seat 341 and a pressure detection ring 342 slidably connected to the electromagnet 33. The sliding distance is limited by the limit ring at both ends of the electromagnet 33. The pressure detection ring 342 can detect the extrusion force of the limit ring squeezing the pressure detection ring 342 when the permanent magnet 32 ​​attracts the electromagnet 33 to move, so that the firmness of this section of the inspection cable when installed through the suspension frame can be judged according to the extrusion force detected at this time. For example, if the extrusion force detected at this time is less than the preset value, it is judged that the installation of this section of the inspection cable is too loose and the firmness is low.

[0042] It should be noted that the rotation process of the inspection seat 3 is divided into a bottom rotation process when the cable enters the inspection frame 2 and a top rotation process when the cable moves out of the inspection frame 2 according to the cable inspection process. The bottom rotation process is: the rotation locking column 35 set at the top of the inspection seat 3 is used as the rotation axis, and the inspection seat 3 is driven to rotate by the cable squeezing and installing the detection bayonet 31;

[0043] The top rotation process is as follows: the rotation locking column 35 provided at the bottom of the inspection seat 3 is used as the rotation axis, and the detection bayonet 31 is installed by squeezing the cable to the top of one side of the inspection frame 2 to drive the inspection seat 3 to rotate.

[0044] Based on the above, during the rotation of the inspection seat 3, the conductive electromagnet 33 generates a magnetic attraction force on the permanent magnet 32, thereby preventing the rotating locking column 35 from disengaging from the movable slot 21 during installation of the inspection seat 3, resulting in inspection failure.

[0045] like Figure 3 and Figure 4As shown, the cable internal and external inspection mechanism includes an outer skin temperature detection strip 4 and a clamp ammeter 5 arranged on the inspection frame 2. The outer skin temperature detection strip 4 is provided with a temperature sensor for inspecting abnormal temperature on the outer surface of the cable. The inspection frame 2 is provided with an inspection brush 51 at the inspection port. The inspection frame 2 and the inspection mounting seat 3 are provided with an iron core 52 electrically connected through the inspection brush 51. A mutual inductance conductor 53 electrically connected to the clamp ammeter 5 is wound around the iron core 52.

[0046] It should be noted that: the outer skin temperature detection strip 4 is symmetrically arranged inside the inspection frame 2, and the outer skin temperature detection sub-strip 41 is arranged on the side of the inspection seat 3 close to the outer skin temperature detection strip 4. The outer skin temperature detection strip 4 and the outer skin temperature detection sub-strip 41 can form a complete detection loop, so that when the inspection monitoring seat 1 moves with the drone, the outer skin temperature of the cable located in the inspection frame 2 can be detected. When the outer skin of the cable is damaged, the thermal insulation performance of the cable at the damaged part will deteriorate. When the outer skin temperature detection strip 4 and the outer skin temperature detection sub-strip 41 are used for detection, the temperature of the temperature sensor corresponding to the damaged part is higher than the temperature of the rest of the cable outer skin, and the cable outer skin is judged to be damaged.

[0047] Furthermore, a patrol conductive column 54 is provided in the installation patrol seat 3, which is used to close the patrol port when the installation patrol seat 3 is used. When AC flows through the cable, it is electrically connected to the iron core 52 to form a mutual inductance loop. The clamp ammeter 5 detects the current size of the AC in the cable through the current size flowing through the mutual inductance wire 53;

[0048] It should be noted that: after the cable is moved into the inspection frame 2, the clamp ammeter 5 can detect the magnitude of the alternating current passing through this section of the inspection cable through the mutual inductance conductor 53, and by comparing it with the standard value of the alternating current in the cable, it can be determined whether the internal resistance of the conductor in this section of the inspection cable has increased due to aging, and the current value is lower than the standard value, so that the integrity of the outer skin of the inspection cable and whether the current value is abnormal can be inspected through the outer skin temperature detection sub-strip 41 and the clamp ammeter 5.

[0049] like Figure 5 and Figure 6As shown, a repair marking mechanism is also provided at the bottom of the inspection and monitoring seat 1 for repairing and marking the wires with abnormal temperatures. The repair marking mechanism includes a repair marking bracket 6 movably arranged on the side of the inspection seat 3 close to the inspection frame 2, a driving rack 61 meshing with the repair marking bracket 6 is arranged in the inspection seat 3, a repair marking box 7 is fixedly installed in the repair marking bracket 6, a repair roller 71 is rotatably provided on the side of the repair marking box 7 close to the axis of the repair marking bracket 6, and the repair marking box 7 is connected to a repair marking tank 72 installed on the repair marking bracket 6, which can replenish the insulation filling liquid with fluorescent agent for the repair marking box 7. The insulation filling liquid mentioned here is an insulating heat-insulating glue, which can harden when in contact with air. It is a prior art and will not be repeated in the subsequent description.

[0050] It should be noted that: when the inspection cable is detected to be damaged by the outer skin temperature detection strip 4 and the outer skin temperature detection sub-strip 41, the inspection monitoring seat 1 is controlled so that the repair mark bracket 6 is located on the outer surface of the inspection cable, and when the inspection frame 2 moves downward, the repair mark bracket 6 is driven to rotate by driving the rack 61, so that the repair roller 71 adheres to and rolls around the inspection cable for one circle, and the insulating filling liquid with fluorescent agent contained in the repair mark box 7 is applied to the surface of the inspection cable. After the coating is completed, the insulating filling liquid is hardened, the defective part is temporarily repaired, and the damaged part is marked, providing a significant mark for subsequent maintenance personnel, thereby achieving the purpose of temporarily repairing the damaged part of the cable and marking it.

[0051] Furthermore, the outer surface of the repair mark bracket 6 is provided with a driving gear 62 meshing with the driving rack 61, and the inner wall of the inspection seat 3 is slidably connected with a limiting slider 63 movably connected with the inner surface of the repair mark bracket 6;

[0052] It should be noted that: the repair mark bracket 6 is provided with a repair mark opening 64, and the distance between the repair mark openings 64 is less than the arc chord length of the limit slider 63, so that the repair mark bracket 6 can be rotated from the repair mark opening 64 to the limit slider 63 without falling off the installation inspection seat 3;

[0053] Based on the above, when the cable is not inspected, the repair mark bracket 6 is limited by the limit slider 63, and the repair mark opening 64 is controlled to be tilted downward. When the outer skin temperature is abnormal during the cable inspection, the flight trajectory of the drone is controlled to control the cable to enter the inner side of the repair mark bracket 6 through the repair mark opening 64, and when the inspection frame 2 moves downward, the repair mark bracket 6 is driven to rotate until the repair mark opening 64 rotates to vertically upward and detaches from the repair mark bracket 6, and then the inspection frame 2 moves away from the inspection cable, squeezes the top of the inspection seat 3, and when the inspection seat 3 is tilted at a sufficient angle for the cable to be moved out, the inspection cable is moved out of the inspection frame 2;

[0054] Based on the above, after the inspection cable is moved out of the repair mark bracket 6, under the action of gravity, the repair mark bracket 6 is restored to the repair mark opening 64 tilted downward, completing the resetting process of the repair mark bracket 6.

[0055] Working principle:

[0056] The present invention controls the inspection monitoring seat 1 to change its position through the drone, and when inspecting the inspection cable, it is divided into an installation firmness inspection process, an outer skin temperature inspection process, a conductor current inspection process, and a damaged part repair marking process, wherein the installation firmness inspection process of the inspection cable is specifically as follows: the inspection monitoring seat 1 is controlled by the drone to change its position, so that the cable can push the installation inspection seat 3 from the installation detection bayonet 31 of the installation inspection seat 3 into the inspection frame 2, during which the pressure of the upper limit ring extrusion pressure detection circle 342 of the electromagnet 33 is detected by installing the inspection pressure device 34, so that the firmness of this section of the inspection cable when installed through the suspension frame can be judged according to the extrusion force detected at this time;

[0057] Based on the above, the inspection process of the cable outer skin temperature is specifically as follows: after the inspection cable enters the inspection frame 2, a complete inspection loop can be formed by the outer skin temperature detection strip 4 and the outer skin temperature detection sub-strip 41. When the inspection monitoring seat 1 moves with the drone, the temperature of the cable outer skin located in the inspection frame 2 is detected. When the cable outer skin is damaged, the thermal insulation performance of the cable at the damaged part will deteriorate. When the outer skin temperature detection strip 4 and the outer skin temperature detection sub-strip 41 are used for detection, the temperature of the temperature sensor corresponding to the damaged part is higher than the temperature of the rest of the cable outer skin, and a judgment is made that the cable outer skin is damaged.

[0058] Based on the above, the current inspection process of the conductors in the inspection cable is specifically as follows: after the cable is moved into the inspection frame 2, the clamp ammeter 5 can detect the magnitude of the alternating current passing through this section of the inspection cable through the mutual inductance conductor 53, and by comparing it with the standard value of the alternating current in the cable, it can be determined whether the internal resistance of the conductors in this section of the inspection cable has increased due to aging, and the current value is lower than the standard value, so that the integrity of the outer skin of the inspection cable and whether the current value is abnormal can be inspected through the outer skin temperature detection sub-strip 41 and the clamp ammeter 5.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An unmanned aerial vehicle inspection and monitoring device, comprising an inspection and monitoring seat (1) installed at the bottom of the unmanned aerial vehicle, used for inspecting and monitoring overhead cables, characterized in that: The inspection and monitoring seat (1) is provided with a cable inspection unit at the bottom thereof, the cable inspection unit being used to inspect the abnormal state of the cable, the cable inspection unit comprising an installation inspection mechanism and a cable internal and external inspection mechanism, the installation inspection mechanism being used to inspect the installation firmness of the cable, and the cable internal and external inspection mechanism being used to inspect the outer skin of the cable and the temperature of the conductor; The installation inspection mechanism comprises an inspection frame (2) arranged at the bottom of the inspection monitoring seat (1); the inspection frame (2) is provided with an inspection port on a side close to the cable; the inspection frame (2) is movably connected to the inspection port through the installation inspection seat (3) to selectively close the inspection port; an installation detection bayonet (31) is provided on the outer surface of the installation inspection seat (3); a permanent magnet (32) is fixed on the side of the installation inspection seat (3) away from the cable; an electromagnet (33) is movably provided on the top of the inspection frame (2) to attract the permanent magnet (32) and generate an attraction force on the installation inspection seat (3); and an installation inspection pressure device (34) is provided on the top of the inspection frame (2) to detect the firmness of the cable installation; The cable internal and external inspection mechanism comprises an outer skin temperature detection strip (4) and a clamp ammeter (5) arranged on the inspection frame (2); a temperature sensor is arranged inside the outer skin temperature detection strip (4) for inspecting abnormal temperature on the outer surface of the cable; an inspection brush (51) is arranged at the inspection port of the inspection frame (2); an iron core (52) electrically connected via the inspection brush (51) is arranged inside the inspection frame (2) and the mounting inspection seat (3); a mutual inductance wire (53) electrically connected to the clamp ammeter (5) is wound outside the iron core (52).

2. The unmanned aerial vehicle inspection and monitoring device according to claim 1, characterized in that: The inspection frame (2) is provided with an active slot (21) on one side close to the cable, the active slot (21) being composed of a closed slot (211) and an inspection slot (212) arranged from low to high, and the inspection mounting seat (3) is rotatably connected to the active slot (21) by rotating a locking column (35).

3. The unmanned aerial vehicle inspection and monitoring device according to claim 1, characterized in that: The installation detection bayonet (31) is configured as an arc-shaped groove adapted to the diameter of the cable and is located at the top of the closed bayonet (211).

4. The unmanned aerial vehicle inspection and monitoring device according to claim 1, characterized in that: The installation inspection pressure device (34) is composed of a stabilizing seat (341) and a pressure detection ring (342) which are slidably connected to the electromagnet (33), and the sliding distance is limited by limit rings at both ends of the electromagnet (33).

5. The unmanned aerial vehicle inspection and monitoring device according to claim 1, characterized in that: The outer skin temperature detection strip (4) is symmetrically arranged on the inner side of the inspection frame (2), and an outer skin temperature detection sub-strip (41) is arranged on the side of the mounting inspection seat (3) close to the outer skin temperature detection strip (4).

6. The unmanned aerial vehicle inspection and monitoring device according to claim 1, characterized in that: The inspection installation seat (3) is provided with an inspection conductive column (54) for closing the inspection port of the inspection installation seat (3). When alternating current flows through the cable, it is electrically connected to the iron core (52) to form a mutual inductance loop. The clamp ammeter (5) detects the current size of the alternating current in the cable through the current size flowing through the mutual inductance wire (53).

7. The unmanned aerial vehicle inspection and monitoring device according to claim 1, characterized in that: The bottom of the inspection and monitoring seat (1) is also provided with a repair marking mechanism for repairing and marking the wire with abnormal temperature. The repair marking mechanism comprises a repair marking bracket (6) movably arranged on a side of the inspection installation seat (3) close to the inspection frame (2). A driving rack (61) meshing with the repair marking bracket (6) is arranged in the inspection installation seat (3). A repair marking box (7) is fixedly installed in the repair marking bracket (6). A repair roller (71) is rotatably arranged on one side of the repair marking bracket (6) close to the axis of the repair marking bracket (6), and the repair marking box (7) is connected to a repair marking tank (72) installed on the repair marking bracket (6).

8. The unmanned aerial vehicle inspection and monitoring device according to claim 7, characterized in that: The outer surface of the repair mark bracket (6) is provided with a driving gear (62) meshing with the driving rack (61), and the inner wall of the installation inspection seat (3) is slidably connected with a limiting slider (63) movably connected to the inner surface of the repair mark bracket (6).

9. The unmanned aerial vehicle inspection and monitoring device according to claim 7, characterized in that: The repair mark bracket (6) is provided with a repair mark opening (64). When the cable is not inspected, the repair mark opening (64) is tilted downward. When an abnormal temperature of the outer skin of the cable is found during inspection, the flight trajectory of the drone is controlled so that the cable passes through the repair mark opening (64) and enters the inner side of the repair mark bracket (6).

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