Rotary wing type multi-string strain insulator detection device

Abstract

The invention relates to the technical field of insulator detection, and discloses a rotary wing type multi-string strain insulator detection device which comprises two flying frames, swing rods are hinged to one ends of four connecting rods, electric push rods are rotationally connected to the inner walls of four fixing frames, a synchronous belt is in transmission connection between two belt wheels, and the two flying frames are connected with a rotary shaft. The universal joint drives the connecting rod and the swing rod to swing on the two sides of the middle frame together, then the whole rotary wing type detection mechanism swings above an insulator through the swing rod, if the diameter of a detected insulator string is large, swing of the swing rod is hindered, and the detection result is accurate. The electric push rod is started to rotate and stretch between the swing rod and the fixing frame, then the swing rod can swing on the connecting rod to rotate, the swing rod can smoothly extend out of the interior of the insulator string, then the electric push rod is contracted to be matched with the belt wheel to do circular motion, the electric push rod extends into the inner wall of the other side to swing again, and the device can be smoothly toggled to walk.

Description

Technical Field

[0001] This invention belongs to the technical field of insulator testing, and specifically relates to a rotary multi-string tension insulator testing device. Background Technology

[0002] With the continuous development of my country's power industry, various power generation facilities such as thermal power, wind power, and photovoltaic power are springing up everywhere, and high-voltage transmission systems are receiving increasing attention. Insulators are insulating components used to connect conductors to towers on overhead high-voltage transmission lines, playing a supporting role and preventing current from returning to the ground. Therefore, the health of insulators is directly related to the safety and stability of the high-voltage transmission system.

[0003] Tension insulators operate in extremely harsh environments. They must withstand not only the tensile load between two towers in a transmission line but also variations in electrical load, while also being exposed to local wind and sun. This makes them highly susceptible to deterioration and even failure, threatening the stable operation of the transmission line. To ensure the safety of the transmission line and the smooth operation of power transmission, regular inspection, maintenance, and replacement of insulator strings are necessary. Given the current sheer number of insulators, in order to reduce maintenance costs while ensuring stable line operation, insulator deterioration detection is particularly important.

[0004] Because the installation environment for insulators is very harsh, the risk factor is high if inspection is carried out manually by ship. At the same time, the manpower and material resources required for inspection are large, which increases the inspection cost. Therefore, with the development of modern technology, drone inspection is gradually replacing manual inspection. However, existing rotary-wing UAV insulator testing devices still have the following drawbacks during use: 1. When existing rotary-wing UAV insulator inspection devices fly to high altitudes and make close contact with insulators for inspection, they need to move slowly on the surface of long insulators. However, ordinary UAVs cannot perform high-precision slow coverage movement, and their upper end does not have a complete walking function. As a result, the surface inspection of the insulator is not sufficient during the inspection process, thus reducing the inspection quality. 2. In the process of measuring the resistance of insulators by contact detectors, the existing rotor-type series tension insulator testing device cannot accurately control the contact of insulators connected in parallel due to the high altitude of the device. This may result in some insulators not being contacted, and during the contact process, the detection accuracy is reduced. At the same time, excessive contact can also cause the detection probe to break, thereby reducing the service life of the device.

[0005] Therefore, it is necessary to invent a rotor-type multi-string tension insulator testing device to solve the above problems. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a rotary multi-string tension insulator testing device to solve the issues raised in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rotor-type multi-string tension insulator testing device, comprising two flight frames, two adjusting rods and a middle frame, wherein the middle frame has a walking mechanism, a testing mechanism and a dust removal assembly distributed on the upper and lower sides, wherein the two flight frames are connected to each other through two adjusting rods, and the middle frame is installed between the two adjusting rods; The walking mechanism includes mounting frames fixedly installed on both sides of the top of the middle frame. Each mounting frame has a pulley rotatably connected to its top. Universal joints are installed at the edges of both sides of each pulley. A connecting rod is rotatably provided at one end of each of the four universal joints. First adjusting frames are rotatably connected to both ends of the top of the middle frame. The outer walls of one end of each of the four connecting rods are rotatably connected to the inner walls of the four first adjusting frames. A swing arm is hinged to one end of each of the four connecting rods. A fixing frame is fixed to one side of the bottom of each of the four connecting rods. Electric push rods are rotatably connected to the inner walls of each of the four fixing frames. The output ends of each of the four electric push rods are rotatably connected to one side of each of the four swing rods. A synchronous belt drives between the two pulleys. A first motor is installed at the center of the top of the middle frame. Preferably, the outer wall of the output end of the first motor meshes with the inner wall of the synchronous belt, a protective cover is installed on the top of the intermediate frame, and the outer walls of one end of the four connecting rods are respectively inserted and connected to the outer walls on both sides of the protective cover.

[0008] Preferably, the detection mechanism includes a second motor installed at the bottom center of the intermediate frame, the output end of the second motor is rotatably connected to a second adjustment frame, and the two ends of the second adjustment frame are rotatably connected to the output end and the back of the second motor, respectively.

[0009] Preferably, probe brackets are fixedly connected to the bottom of both ends of the second adjustment frame, probe sleeves are installed at the bottom of both probe brackets, and probe bodies are inserted into the inner walls of the two probe sleeves.

[0010] Preferably, the dust removal assembly includes air boxes installed at the bottom edges of the middle frame. Multiple mounting slots are equally spaced on one side of each air box, and a fan is installed on the inner wall of each mounting slot. Multiple air outlet slots are equally spaced on the other side of each air box, and the inner wall of each mounting slot is connected to the inner wall of one of the multiple air outlet slots.

[0011] Preferably, mounting sleeves are installed at both ends of the outer wall of the intermediate frame, two internal guide frames are installed between the inner walls of the four mounting sleeves, external guide frames are installed on one side of the inner wall of the two flight frames in an inclined state, landing gears are installed at the edge of the bottom side of the two flight frames, and rubber sleeves are fitted on the outer walls of both ends of the two landing gears.

[0012] Preferably, protective rings are installed at both ends of the two flight frames, and flight blades are rotatably connected to both ends of the two flight frames located inside the four protective rings. One end of each of the four flight blades passes through the bottom of the two flight frames and is fixedly connected to a third motor. Fixing bolts are threaded to both sides of the two flight frames, and one end of each of the four fixing bolts contacts the outer wall of the two adjusting rods.

[0013] Preferably, a central control box is installed on both sides of the bottom of the two flight frames at the outer edge of the two landing gears. The central control box contains a core computing module, a flight control module, a drive module, a high-voltage detection module, an image recognition module, an information exchange and transmission module, a power supply board, and a control board. Binocular cameras are installed at both ends of the middle frame, and infrared detectors are installed on both sides of the bottom of the middle frame. The two binocular cameras and the two infrared detectors are electrically connected to the two central control boxes, respectively.

[0014] Preferably, a control switch is installed at the upper end of the central control box, and the first motor, second motor, fan and third motor of the electric push rod are all electrically connected to the central control box through the control switch.

[0015] The technical effects and advantages of this invention are as follows: 1. In this invention, four swing rods at the upper end of the walking mechanism are respectively placed on adjacent insulator strings. By starting the first motor at the top of the middle frame, it drives the synchronous belt drive, thereby synchronously rotating the two pulleys. This causes the universal joints on both sides of the two pulleys to rotate. The universal joints drive the connecting rod and the swing rods to swing together on both sides of the middle frame, thereby causing the entire rotor-type detection mechanism to swing above the insulators. This allows it to move slowly on the insulator strings, enabling the detection mechanism, binocular camera, and infrared detector at the upper end to fully cover the entire insulator string for fault and resistance detection. During the swinging movement, if the diameter of the insulator string being detected is large and the swing rod swings is obstructed, the electric push rod is activated to rotate and extend between the swing rod and the fixed frame. This allows the swing rod to swing on the connecting rod and rotate, thus allowing it to smoothly extend into the interior of the insulator string. Then, the electric push rod is retracted to make it work with the pulley to make a circular motion, thus extending into the inner wall on the other side and swinging again to smoothly move the device. This makes the movement smoother, achieves full coverage of the insulator string, and improves the detection quality. 2. In this invention, during the detection process, the drone slowly walks on the insulator string through the walking mechanism to fully cover the insulator string. At the same time, the second motor is started to rotate the second adjustment frame left and right, which in turn swings the probe bracket left and right. While swinging, the probe body swings left and right to contact the surface of the insulation string on both sides to realize the resistance value detection. This design facilitates full contact between the device and the insulator, reducing the probability of no contact or poor contact. At the same time, the probe body is made of spring steel, which has a certain buffering effect when contacting and pressing, and is not easily damaged, thereby improving the accuracy of the device in detecting the resistance value of the insulator.

[0016] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the entire invention; Figure 2 This is a schematic diagram of the connection between the flight frame and the intermediate frame of the present invention; Figure 3 This is a schematic diagram of the walking mechanism of the present invention; Figure 4 This is a schematic diagram of the detection structure and dust removal component of the present invention; Figure 5 This is a schematic diagram of the invention operating on an insulator string.

[0019] In the diagram: 1. Flight frame; 2. Adjusting rod; 3. Intermediate frame; 4. Traveling mechanism; 401. Mounting bracket; 402. Pulley; 403. Universal joint; 404. Connecting rod; 405. First adjusting bracket; 406. Swing rod; 407. Fixed bracket; 408. Electric push rod; 409. Synchronous belt; 410. First motor; 411. Protective cover; 5. Detection mechanism; 501. Second motor; 502. Second adjusting bracket; 503. 504 Probe bracket; 505 Probe jacket; 505 Probe body; 6. Dust removal assembly; 601 Air box; 602 Mounting slot; 603 Fan; 604 Air outlet slot; 7. Mounting sleeve; 8. Internal guide frame; 9. External guide frame; 10. Landing gear; 11. Rubber sleeve; 12. Protective ring; 13. Flight propeller blade; 14. Third motor; 15. Fixing bolt; 16. Central control box; 17. Binocular camera; 18. Infrared detector. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides, for example Figure 1-5 The rotary multi-string tension insulator testing device shown includes two flight frames 1, two adjusting rods 2 and a middle frame 3. The middle frame 3 is characterized by having a walking mechanism 4, a testing mechanism 5 and a dust removal component 6 distributed on the upper and lower sides. The two flight frames 1 are connected to each other through two adjusting rods 2, and the middle frame 3 is installed between the two adjusting rods 2. The walking mechanism 4 includes mounting brackets 401 fixedly installed on both sides of the top of the intermediate frame 3. The top of each mounting bracket 401 is rotatably connected to a pulley 402. Universal joints 403 are installed on the edges of both sides of each pulley 402. One end of each universal joint 403 is rotatably connected to a connecting rod 404. The two ends of the top of the intermediate frame 3 are rotatably connected to a first adjusting bracket 405. The outer wall of one end of each of the four connecting rods 404 is rotatably connected to the inner wall of each of the four first adjusting brackets 405. One end of each of the four connecting rods 404 is hinged to a swing rod 406. One side of the bottom of each of the four connecting rods 404 is fixedly provided with a fixing bracket 407. The inner wall of each of the four fixing brackets 407 is rotatably connected to an electric push rod 408. The output end of each of the four electric push rods 408 is rotatably connected to one side of each of the four swing rods 406. A synchronous belt 409 is connected between the two pulleys 402. A first motor 410 is installed at the middle position of the top of the intermediate frame 3. In use, the rotor-type detection device is flown to a high position via the flight frame 1 to connect with the auxiliary insulator, and positioned above the insulator. The intermediate frame 3 is then positioned between the two insulators, as shown in the instruction manual. Figure 5 As shown, during this process, the four swing arms 406 at the upper end of the traveling mechanism 4 are placed on adjacent insulator strings respectively. By starting the first motor 410 at the top of the intermediate frame 3, it drives the synchronous belt 409 to rotate, thereby synchronously rotating the two pulleys 402. This causes the universal joints 403 on both sides of the two pulleys 402 to rotate. The universal joints 403 drive the connecting rod 404 and the swing arms 406 to swing together on both sides of the intermediate frame 3. This causes the entire rotor-type detection mechanism 5 to swing above the insulators by the swing arms 406, making it move slowly on the insulator strings. This allows the detection mechanism 5, the binocular camera 17, and the infrared detector at the upper end to move slowly. 18. It can fully cover the entire insulator string for fault and resistance detection. During the swinging movement, if the diameter of the insulator string being tested is large and the swing of the swing rod 406 is obstructed, the electric push rod 408 is activated to rotate and extend between the swing rod 406 and the fixed frame 407. This allows the swing rod 406 to swing on the connecting rod 404 and rotate, thus allowing it to smoothly extend into the interior of the insulator string. When the electric push rod 408 is retracted, it works in conjunction with the circular motion of the pulley 402 to extend into the inner wall on the other side and swing again, thus smoothly moving the device. This makes the movement smoother, achieves full coverage of the insulator string, and improves the detection quality.

[0022] The outer wall of the output end of the first motor 410 meshes with the inner wall of the synchronous belt 409. A protective cover 411 is installed on the top of the intermediate frame 3, and the outer wall of one end of the four connecting rods 404 is respectively inserted and connected to the outer walls on both sides of the protective cover 411. The protective cover 411 is installed on the intermediate frame 3 to protect the walking mechanism 4 and reduce the risk of damage caused by collision and dust cover. Furthermore, the testing mechanism 5 includes a second motor 501 installed at the bottom center of the intermediate frame 3. The output end of the second motor 501 is rotatably connected to a second adjusting frame 502, and the two ends of the second adjusting frame 502 are rotatably connected to the output end and the back of the second motor 501, respectively. The second motor 501 and the second adjusting frame 502 are installed below the intermediate frame 3 to facilitate resistance testing of the insulator strings below.

[0023] The bottom of both ends of the second adjustment frame 502 is fixedly connected to probe brackets 503. The bottom of each probe bracket 503 is equipped with a probe sleeve 504. The inner wall of each probe sleeve 504 is interlaced with a probe body 505. During the detection process, when the UAV slowly walks on the insulator string through the walking mechanism 4 to fully cover the insulator string, the second motor 501 is started to rotate the second adjustment frame 502 to rotate left and right, thereby swinging the probe brackets 503 left and right. At the same time, the probe body 505 swings left and right to contact the surface of the insulation string on both sides to realize the resistance value detection. This design facilitates the device to fully contact the insulator, reducing the probability of no contact or poor contact. At the same time, the probe body 505 is made of spring steel, which has a certain buffering effect when contacting and pressing, and is not easily damaged, thereby improving the accuracy of the device in detecting the resistance value of the insulator. Furthermore, the dust removal assembly 6 includes air boxes 601 installed at the bottom edges of the middle frame 3. Multiple mounting slots 602 are equally spaced on one side of each air box 601, and a fan 603 is installed on the inner wall of each mounting slot 602. Multiple air outlet slots 604 are equally spaced on the other side of each air box 601, and the inner wall of each mounting slot 602 communicates with the inner walls of multiple air outlet slots 604. During the detection process, the detection device activates the fan 603 in the mounting slot 602 on one side of the air box 601, and then blows air out through the air outlet slots 604 on the other side of the air box 601 to clean the dust from the surface of the insulator string. This allows the detection mechanism 5 to fully contact the insulator for detection, and also enables simple cleaning of the insulator for subsequent use. Furthermore, mounting sleeves 7 are installed at both ends of the outer wall of the middle frame 3. Two internal guide frames 8 are installed between the inner walls of the four mounting sleeves 7. External guide frames 9 are installed on one side of the inner wall of the two flight frames 1 in an inclined state. Landing gears 10 are installed at the edge of the bottom side of the two flight frames 1. Rubber sleeves 11 are fitted on the outer walls of both ends of the two landing gears 10. During flight of the rotor-type detection device, the flight frame 1 is slid on the two adjusting rods 2 according to the model and size of the insulator string, and then the fixing bolts 15 are tightened to change the size of the device so that the internal guide frames 8 and external guide frames 9 can fully contact the surface of the insulator for support and detection. During takeoff and landing, the support of the landing gear 10 can reduce equipment wear. The rubber sleeves 11 on the landing gear 10 also play a role in buffering and preventing wear.

[0024] Both ends of the two flight frames 1 are equipped with protective rings 12. Both ends of the two flight frames 1 are rotatably connected to flight blades 13 located inside the four protective rings 12. One end of each of the four flight blades 13 passes through the bottom of the two flight frames 1 and is fixedly connected to a third motor 14. Both sides of the two flight frames 1 are threaded with fixing bolts 15, and one end of each of the four fixing bolts 15 contacts the outer wall of the two adjusting rods 2. During flight, the third motor 14 is started to rotate the flight blades 13, which can carry the flight frames 1 into flight. During flight, the flight blades 13 are protected by the protective rings 12.

[0025] Furthermore, a central control box 16 is installed on both sides of the bottom of the two flight frames 1 at the outer edge of the two landing gears 10. The central control box 16 contains a core computing module, a flight control module, a drive module, a high-voltage detection module, an image recognition module, an information exchange and transmission module, a power supply board, and a control board. Binocular cameras 17 are installed at both ends of the middle frame 3, and infrared detectors 18 are installed on both sides of the bottom of the middle frame 3. The two binocular cameras 17 and the two infrared detectors 18 are electrically connected to the two central control boxes 16. During the detection process, the binocular cameras 17, the infrared detectors 18, and the probe body 505 on the detection mechanism 5 are all controlled by the various components inside the central control box 16. A remote control can also be provided so that the staff can control the device for detection and reciprocating flight from the ground.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary-type multi-string tension insulator testing device, comprising two flight frames (1), two adjusting rods (2), and an intermediate frame (3), characterized in that: The intermediate frame (3) has a walking mechanism (4), a detection mechanism (5) and a dust removal component (6) distributed on the upper and lower sides. The two flying frames (1) are connected to each other by two adjusting rods (2), and the intermediate frame (3) is installed between the two adjusting rods (2). The walking mechanism (4) includes mounting brackets (401) fixedly installed on both sides of the top of the intermediate frame (3). The top of each of the two mounting brackets (401) is rotatably connected to a pulley (402). Universal joints (403) are installed on the edges of both sides of the two pulleys (402). A connecting rod (404) is rotatably provided at one end of each of the four universal joints (403). The two ends of the top of the intermediate frame (3) are rotatably connected to the first adjusting brackets (405). The outer wall of one end of each of the four connecting rods (404) is respectively connected to the four first adjusting brackets (405). The inner wall is rotatably connected, and one end of each of the four connecting rods (404) is hinged to a swing rod (406). A fixed frame (407) is fixedly provided on one side of the bottom of each of the four connecting rods (404). An electric push rod (408) is rotatably connected to the inner wall of each of the four fixed frames (407). The output ends of the four electric push rods (408) are rotatably connected to one side of each of the four swing rods (406). A synchronous belt (409) is connected between the two pulleys (402). A first motor (410) is installed at the middle position of the top of the intermediate frame (3).

2. The rotary multi-string tension insulator testing device according to claim 1, characterized in that: The outer wall of the output end of the first motor (410) meshes with the inner wall of the synchronous belt (409), and a protective cover (411) is installed on the top of the intermediate frame (3), and the outer walls of one end of the four connecting rods (404) are respectively inserted and connected to the outer walls on both sides of the protective cover (411).

3. The rotary multi-string tension insulator testing device according to claim 1, characterized in that: The detection mechanism (5) includes a second motor (501) installed at the bottom center of the intermediate frame (3). The output end of the second motor (501) is rotatably connected to a second adjustment frame (502), and the two ends of the second adjustment frame (502) are rotatably connected to the output end and the back of the second motor (501), respectively.

4. The rotary multi-string tension insulator testing device according to claim 3, characterized in that: The bottom of both ends of the second adjustment frame (502) is fixedly connected to a probe bracket (503), and the bottom of the two probe brackets (503) is equipped with a probe sleeve (504). The inner walls of the two probe sleeves (504) are interlaced with probe bodies (505).

5. The rotary multi-string tension insulator testing device according to claim 1, characterized in that: The dust removal assembly (6) includes air boxes (601) installed at the bottom edges of the middle frame (3). Multiple mounting slots (602) are equally spaced on one side of the two air boxes (601). A fan (603) is installed on the inner wall of each mounting slot (602). Multiple air outlet slots (604) are equally spaced on the other side of the two air boxes (601). The inner wall of each mounting slot (602) is connected to the inner wall of one of the multiple air outlet slots (604).

6. The rotary multi-string tension insulator testing device according to claim 1, characterized in that: Mounting sleeves (7) are installed at both ends of the outer wall of the middle frame (3). Two internal guide frames (8) are installed between the inner walls of the four mounting sleeves (7). External guide frames (9) are installed on one side of the inner wall of the two flight frames (1) in an inclined state. Landing gears (10) are installed at the edge of the bottom side of the two flight frames (1). Rubber sleeves (11) are fitted on the outer walls of both ends of the two landing gears (10).

7. The rotary multi-string tension insulator testing device according to claim 1, characterized in that: Both ends of the two flight frames (1) are equipped with protective rings (12). Both ends of the two flight frames (1) are rotatably connected to the four protective rings (12). One end of each of the four flight blades (13) passes through the bottom of the two flight frames (1) and is fixedly connected to a third motor (14). Both sides of the two flight frames (1) are threaded with fixing bolts (15), and one end of each of the four fixing bolts (15) contacts the outer wall of the two adjusting rods (2).

8. The rotary multi-string tension insulator testing device according to claim 1, characterized in that: A central control box (16) is installed on both sides of the bottom of the two flight frames (1) at the outer edge of the two landing gears (10). The central control box (16) is equipped with a core computing module, a flight control module, a drive module, a high voltage detection module, an image recognition module, an information exchange and transmission module, a power supply board and a control board. Both ends of the middle frame (3) are equipped with binocular cameras (17). Both sides of the bottom of the middle frame (3) are equipped with infrared detectors (18). The two binocular cameras (17) and the two infrared detectors (18) are electrically connected to the two central control boxes (16).

9. A rotary multi-string tension insulator testing device according to claim 8, characterized in that: The upper end of the central control box (16) is equipped with a control switch, and the first motor (410), the second motor (501), the fan (603) and the third motor (14) of the electric push rod (408) are all electrically connected to the central control box (16) through the control switch.

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