Defect identification device for in-service power line clamp

Abstract

The invention relates to an in-service power line clamp defect identification device, which relates to the field of power line network detection equipment, and comprises a detection bracket, a walking mechanism, a defect identification module and an electric clamp, the walking mechanism is used for supporting the detection support to drive the whole device to walk on a cable, after the electric clamp clamps the drainage wire, the counter weight frame is moved downwards, the drainage wire is straightened under the gravity action of the electric clamp, the floating base and the defect recognition module, at the moment, scanning is conducted from bottom to top along the drainage wire by moving the defect recognition module, and the detection accuracy is improved. The scanning path is determined by straightening the drainage wire, so that the drainage wire and the drainage wire clamp are always located in the scanning range of the defect identification module, the situation of scanning omission is avoided, the drainage wire and the drainage wire clamp continuously keep the tension effect in the scanning process, the crack defect on the drainage wire clamp can be amplified, and furthermore, the scanning efficiency is improved. And the stability of the connection between the drainage wire and the drainage wire clamp can be conveniently judged by utilizing the tension effect on the drainage wire.

Description

Technical Field

[0001] The present invention relates to the field of power line network detection equipment, and in particular to a device for identifying defects of in-service power line clamps. Background Art

[0002] During live maintenance work on the distribution network, if equipment on an important line fails, it is necessary to remove the faulty equipment as soon as possible to prevent the accident from becoming more serious. To this end, operators usually build a bypass in parallel with the faulty equipment and then remove the faulty equipment. Insulated drain wire clamps are usually used to complete the bypass transfer of the insulated drain wire. For example, patent application number CN202311311911.1 is a quick hanging device for insulated drain wires, which can be hung on the cable line. This drain wire clamp has a high reuse rate in emergency repair work. During the construction of the transfer line, it is necessary to detect the position of the drain wire clamp. On the one hand, it is necessary to check whether there are cracks on the drain wire clamp. On the other hand, it is necessary to check the stability of the connection between the drain wire clamp and the drain wire to ensure the stability of the drain wire clamp installation and prevent secondary accidents caused by clamp strain. During the installation of lead clips, it is common to rely on manual visual inspection to inspect the installed lead clips. Manual visual inspection can only check whether the appearance of the lead clips is intact, and it is not easy to find tiny cracks on the lead clips. Therefore, in order to improve the defect recognition rate, drone inspection equipment has been introduced, equipped with defect scanning cameras to scan the in-service lead clips. However, when dealing with the situation of bent drain wires, the existing defect scanning equipment cannot determine the scanning path, which can easily lead to missed scans and is not conducive to eliminating hidden dangers. Summary of the Invention

[0003] The present invention aims to overcome the problem that the existing defect scanning equipment cannot determine the scanning path when dealing with the situation of bent drainage lines, which easily leads to missed scans and is not conducive to eliminating hidden dangers. The purpose of the present invention is to provide a defect identification device for in-service power line clamps.

[0004] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions: An in-service power line clamp defect identification device is used to detect drainage line clamps hung on cables, comprising: a detection bracket, a walking mechanism, a defect identification module, and an electric clamp; The walking mechanism is installed on the detection bracket, and the walking mechanism is used to support the detection bracket to walk on the cable line. A support column is provided at the lower part of the detection bracket, and a counterweight frame is slidably installed on the support column. A horizontal support frame is slidably installed on the counterweight frame. A support seat is fixed at the end of the horizontal support frame, and a floating seat is slidably provided on the support seat. The defect recognition module and the electric clamp are respectively arranged on the floating seats, and the defect recognition module is located on the upper part of the electric clamp.

[0005] Furthermore, the walking mechanism includes walking casters and a walking motor. The outer ring of the walking casters is provided with a groove matching the cable. There are two walking casters, and a transmission shaft is connected between the two walking casters. A worm gear is installed on the transmission shaft. A worm is rotatably installed on the detection bracket. The worm engages with the worm wheel, and the walking motor drives the worm to rotate.

[0006] Furthermore, a support push rod is fixed to the bottom end of the support column, and the output end of the support push rod supports the counterweight frame upward. A lifting rack and a sinking rack are slidably installed on the support column. The lifting rack is parallel to the sinking rack, and the sinking rack is fixed on the counterweight frame. A cooperative gear is rotatably installed on the support column, and the cooperative gears are arranged on both sides of the lifting rack and are respectively engaged with the lifting rack and the sinking rack. A support plate is provided at the upper end of the lifting rack, and an arc-shaped groove matching the cable is provided on the upper part of the support plate.

[0007] Furthermore, a guide ridge is provided on one side of the support seat, and tooth segments are provided on both sides of the guide ridge. A floating gear is rotatably installed on the floating seat, and the floating gear is engaged with the tooth segments on both sides of the guide rack. A floating rack is slidably installed on the floating seat, and the floating rack engages with the floating gear. The defect recognition module is fixedly installed on the upper part of the floating rack.

[0008] Furthermore, the defect recognition module includes a U-shaped frame, a first scanning camera, and a second scanning camera. Ball screws are respectively installed on the two supporting legs of the U-shaped frame. The first scanning camera and the second scanning camera are respectively installed on the moving parts of the two ball screws. The lower ends of the two ball screws are connected to the same drive shaft through gears, and the drive shaft is driven to rotate by a scanning motor.

[0009] Furthermore, a buffer plate is slidably inserted into one end of the support plate, a buffer spring is provided at one end of the buffer plate located inside the support plate, and a receiving groove is provided at one end of the buffer plate located outside the support plate that cooperates with the outer ring of the drainage wire clamp.

[0010] Furthermore, a connecting cooperative column is fixed to the lower part of the buffer plate, and the lower end of the cooperative column slides through the horizontal support frame.

[0011] Furthermore, the horizontal support is parallel to the supporting plate, and the support column is perpendicular to the horizontal support.

[0012] Furthermore, the upper and lower ends of the support seat are respectively provided with limit blocks, the floating seat is located between the two limit blocks, the upper limit block is threadedly connected with an adjusting screw, the lower end of the adjusting screw is rotatably installed with a pressure plate, and the pressure plate is located on the upper part of the floating seat.

[0013] The beneficial effects of the present invention are: The walking mechanism supports the detection bracket and drives the device as a whole to walk on the cable line. After the electric clamp clamps the drainage line, the counterweight frame is moved down. Under the action of gravity of the electric clamp, the floating seat and the defect recognition module, the drainage line is straightened. At this time, the defect recognition module is moved to scan from bottom to top along the drainage line. The scanning path is determined by straightening the drainage line, so that the drainage line and the drainage line clamp are always located in the scanning range of the defect recognition module to avoid missing scans. Since the drainage line and the drainage line clamp maintain a continuous pulling force during the scanning process, the crack defect on the drainage line clamp can be magnified. Furthermore, the pulling force on the drainage line is used to facilitate the judgment of the stability of the connection between the drainage line and the drainage line clamp. The lifting rack is used to push the support plate upward so that the support plate contacts the cable line from the bottom. The arc groove on the support plate cooperates with the groove on the walking caster to form a clamp for the cable line, ensuring the overall position stability of the device during detection and scanning. Due to the relative movement of the support seat and the floating seat, the floating rack lifts the defect recognition module upward, and then the support legs of the U-shaped frame move upward. The support legs of the U-shaped frame move to the upper part of the cable line, and the first scanning camera and the second scanning camera can be moved to the upper part of the cable line along the ball screw arranged on the support legs of the U-shaped frame, thereby realizing a complete scan of the drainage wire clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic structural diagram of the walking mechanism of the present invention; Figure 3 This is a schematic diagram of the installation of the counterweight frame of the present invention; Figure 4 This is a schematic diagram of the installation of the floating seat of the present invention; Figure 5 This is a schematic diagram of the installation of the cooperative column of the present invention; Figure 6 This is a schematic diagram of the installation of the floating gear and floating rack of the present invention; Figure 7 This is a schematic diagram of the connection between the support plate and the buffer plate of the present invention.

[0015] In the figure: 1. Detection bracket; 2. Walking mechanism; 3. Defect recognition module; 4. Electric clamp; 12. Support column; 13. Counterweight frame; 14. Horizontal support frame; 15. Support seat; 16. Floating seat; 21. Walking caster; 22. Walking motor; 23. Drive shaft; 24. Worm gear; 25. Worm; 31. Support push rod; 32. Lifting rack; 33. Lowering rack; 34. Cooperative gear; 35. Support plate; 41. Guide rib; 42. Floating gear; 43. Floating rack; 51. U-shaped frame; 52. First scanning camera; 53. Second scanning camera; 56. Ball screw; 57. Drive shaft; 58. Scanning motor; 61. Buffer plate; 62. Buffer spring; 63. Receiving groove; 64. Cooperative column; 71. Limit block; 72. Adjusting screw; 73. Pressing plate. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0017] Example 1: Figure 1 As shown, a device for identifying defects in in-service power line clamps is used to detect drainage line clamps hung on cables, comprising: a detection bracket 1, a walking mechanism 2, a defect identification module 3, and an electric clamp 4; The walking mechanism 2 is installed on the detection bracket 1. The walking mechanism 2 is used to support the detection bracket 1 to walk on the cable line. A support column 12 is provided at the lower part of the detection bracket 1. A counterweight frame 13 is slidably installed on the support column 12. A horizontal support frame 14 is slidably installed on the counterweight frame 13. A support seat 15 is fixed to the end of the horizontal support frame 14. A floating seat 16 is slidably provided on the support seat 15. The defect recognition module 3 and the electric clamp 4 are respectively arranged on the floating seat 16. The defect recognition module 3 is located on the upper part of the electric clamp 4; A controller module (PLC) is provided on the detection bracket 1. The defect recognition module 3 scans and generates surface image data of the drainage wire clamp and transmits the surface image data of the drainage wire clamp to the controller module. The controller module remotely transmits the collected surface image data of the drainage wire clamp to the ground control center via a wireless module. The ground control center receives the surface image data of the drainage wire clamp, processes, analyzes, and stores it, and displays the image through a graphical interface. The walking mechanism 2 supports the detection bracket 1 and drives the device as a whole to walk on the cable line. When it moves to the drainage line clamp installation position, the counterweight frame 13 is pushed to the upper end of the support column 12. At this time, the counterweight frame 13 forms a support for the electric clamp 4 through the horizontal support frame 14, the support seat 15 and the floating seat 16, and the electric clamp 4 is used to clamp the drainage line. After the clamping is completed, the counterweight frame 13 is released. Since the electric clamp 4 has been positioned on the drainage line and will not move, the counterweight frame 13 moves downward under the action of its own gravity. The counterweight frame 13 will not lift the electric clamp 4 at this time. Under the action of gravity of the seat 16 and the defect recognition module 3, a downward pulling force will be formed on the drainage line, thereby straightening the drainage line. At this time, the defect recognition module 3 is moved to scan from bottom to top along the drainage line. The scanning path is determined by straightening the drainage line, so that the drainage line and the drainage line clamp are always located in the scanning range of the defect recognition module 3 to avoid missed scanning. Since the drainage line and the drainage line clamp continue to maintain a pulling force during the scanning process, the crack defect on the drainage line clamp can be magnified. In addition, the pulling force on the drainage line is used to facilitate the judgment of the stability of the connection between the drainage line and the drainage line clamp.

[0018] Example 2: Based on Example 1, Figure 1-Figure 3 As shown, the walking mechanism 2 includes a walking caster 21 and a walking motor 22. The outer ring of the walking caster 21 is provided with a groove matching the cable. There are two walking casters 21. A transmission shaft 23 is connected between the two walking casters 21. A worm gear 24 is installed on the transmission shaft 23. A worm 25 is rotatably installed on the detection bracket 1. The worm 25 engages with the worm gear 24, and the walking motor 22 drives the worm 25 to rotate; the walking motor 22 is connected to the control output end of the controller module. When walking is required, the ground control center remotely sends a control command, and the controller module is received by the wireless module The control instruction controls the travel motor 22 to start, thereby driving the worm gear 24 and worm 25 to rotate, and synchronously driving the two travel casters 21 to rotate through the transmission shaft 23. The rotation of the travel casters 21 can drive the entire device to move on the cable line. When the travel motor 22 stops, the self-locking effect formed by the worm gear 24 and worm 25 is used to limit the rolling of the travel casters 21. Under the action of the friction between the travel casters 21 and the cable line, the position of the entire device on the cable line can be maintained, so as to carry out the subsequent clamping of the drainage line and the scanning operation of the defect recognition module 3; A support push rod 31 is fixed to the bottom end of the support column 12, and the output end of the support push rod 31 supports the counterweight frame 13 upward. A lifting rack 32 and a sinking rack 33 are slidably installed on the support column 12. The lifting rack 32 is parallel to the sinking rack 33, and the sinking rack 33 is fixed on the counterweight frame 13. A cooperative gear 34 is rotatably installed on the support column 12. The cooperative gear 34 is arranged on both sides of the lifting rack 32 and meshes with the lifting rack 32 and the sinking rack 33 respectively. A support plate 35 is provided on the upper end of the lifting rack 32. The top of the support column 12 is provided with an arc-shaped groove that matches the cable line; when the entire device needs to walk on the cable line, the support push rod 31 extends to lift the counterweight frame 13 to the upper part of the support column 12. Since the counterweight frame 13 moves upward relative to the support column 12, the counterweight frame 13 drives the sinking rack 33 to move upward together. As the sinking rack 33 moves upward, the coordinated gear 34 rotates, and the coordinated gear 34 pushes the jacking rack 32 to move downward, thereby driving the support plate 35 to move downward. The support plate 35 is away from the walking casters 21 and will not contact the cable line; When the entire device moves to a position close to the drainage line clamp installation position, the support push rod 31 retracts. As the support push rod 31 contracts, the counterweight block moves downward under the action of its own gravity, synchronously driving the sinking rack 33 to move downward. The sinking rack 33 pushes the lifting rack 32 upward through the cooperative gear 34, and the lifting rack 32 pushes the support plate 35 upward, so that the support plate 35 contacts the cable line from the bottom of the cable line. The arc-shaped groove on the support plate 35 cooperates with the groove on the walking caster 21 to form a clamp for the cable line, ensuring the overall position stability of the device during detection scanning.

[0019] Example 3: Based on Example 2, Figure 1-Figure 7 As shown, when the device is installed as a whole, the defect recognition module 3 is located at the lower part of the cable line, which is conducive to hooking the walking casters 21 of the device on the cable line to prevent the defect recognition module from contacting the cable line. However, since the defect recognition module 3 is located at the lower part of the cable line, the hook position of the drainage clamp at the upper part of the cable line and the connection position between the drainage clamp and the cable line cannot be scanned during detection scanning, resulting in an incomplete scanning problem. Therefore, a guide ridge 41 is provided on one side of the support seat 15, and tooth segments are respectively provided on both sides of the guide ridge 41. A floating gear 42 is rotatably installed on the floating seat 16, and the floating gear 42 is engaged with the tooth segments on both sides of the guide rack. A floating rack 43 is slidably installed on the floating seat 16, and the floating rack 43 engages with the floating gear 42. The defect recognition module 3 is fixedly installed on the upper part of the floating rack 43; When the electric clamp 4 completes clamping the drainage line, the support push rod 31 retracts. At this time, the position of the electric clamp 4 and the drainage line is fixed, so that the floating seat 16 will not be displaced relative to the drainage line. Under the action of its own gravity, the counterweight frame 13 drives the horizontal support frame 14 and the support seat 15 to move downward, thereby causing a relative displacement between the support seat 15 and the floating seat 16. As the counterweight frame 13 moves downward, the support seat 15 also moves downward relative to the floating seat 16. The support seat 15 moves, and the guide ridge 41 on it drives the floating gear 42 on the floating seat 16 to rotate. The floating gear 42 rotates and pushes the floating rack 43 to move upward, thereby being able to lift the defect recognition module 3 upward; The defect recognition module 3 includes a U-shaped frame 51, a first scanning camera 52, and a second scanning camera 53. Ball screws 56 are respectively installed on the two legs of the U-shaped frame 51. The first scanning camera 52 and the second scanning camera 53 are respectively installed on the moving parts of the two ball screws 56. The first scanning camera 52 and the second scanning camera 53 are both high-definition visible light cameras. The lower ends of the two ball screws 56 are connected to the same drive shaft 57 through gears. The ball screws 56 are parallel to the support column 12, and the drive shaft 57 is driven by a scanning motor 58. The two legs of the U-shaped frame 51 face upward. Before scanning, due to the relative movement of the support base 15 and the floating base 16, the floating rack 43 lifts the defect recognition module 3 upward, thereby causing the legs of the U-shaped frame 51 to move upward. The legs of the U-shaped frame 51 move to the upper part of the cable. The scanning motor 58 drives the drive shaft 57 to rotate, thereby driving the two ball screws 56 to rotate synchronously, so that the first scanning camera 52 and the second scanning camera 53 can move synchronously. The first scanning camera 52 and the second scanning camera 53 can be moved to the upper part of the cable along the ball screws 56 provided on the legs of the U-shaped frame 51; Ultraviolet light sources are installed on the upper parts of the first scanning camera 52 and the second scanning camera 53. During emergency repairs at night or in dark environments, fluorescent powder can be pre-coated on the drainage clamp to improve the crack imaging effect. As the first scanning camera 52 and the second scanning camera 53 move, the ultraviolet light sources on them illuminate the drainage clamp, causing the fluorescent powder to glow, thereby enhancing the crack imaging effect. A buffer plate 61 is slidably inserted at one end of the support plate 35. A buffer spring 62 is provided at one end of the buffer plate 61 located inside the support plate 35. A receiving groove 63 is provided at one end of the buffer plate 61 located outside the support plate 35 to cooperate with the outer ring of the drainage clamp. When the walking mechanism 2 moves on the cable line, it drives the entire device to move. When it approaches the installation position of the drainage clamp, the buffer plate 61 contacts the drainage clamp in advance. The buffer spring 62 is provided to buffer the impact of the buffer plate 61, thereby reducing the impact force of the buffer plate 61 on the drainage clamp. Moreover, when positioning, the outer ring of the drainage clamp is snapped into the receiving groove 63, which facilitates the positioning of the drainage clamp. A connecting cooperative column 64 is fixed to the lower portion of the buffer plate 61, and the lower end of the cooperative column 64 slides through the horizontal support frame 14; The horizontal support frame 14 is parallel to the support plate 35, and the support column 12 is perpendicular to the horizontal support frame 14. The horizontal support frame 14, the support plate 35, the support column 12, and the coordination column 64 are arranged in a straight line to form a rectangular structure. The buffer plate 61 is blocked by the drainage wire clamp and retracts into the support plate 35. The cooperative column 64 is used to drive the horizontal support frame 14 to move horizontally on the counterweight frame 13, ensuring that the electric clamp 4 is always located directly below the end of the buffer plate 61. When the electric clamp 4 clamps the drainage wire, the angle between the drainage wire and the cable is ensured to be close to 90 degrees. Furthermore, the drainage wire is straightened by the limit of the buffer plate 61 and the electric clamp 4, and the plane where the drainage wire and the cable are located is as close as possible to the middle position of the first scanning camera 52 and the second scanning camera 53. When the first scanning camera 52 and the second scanning camera 53 move up and down for scanning, the floating distance of the drainage wire relative to the first scanning camera 52 and the second scanning camera 53 is reduced, thereby improving the stability of the scanning; The upper and lower ends of the support seat 15 are respectively provided with limit blocks 71, and the floating seat 16 is located between the two limit blocks 71. The upper limit block 71 is threadedly connected with an adjusting screw 72, and a pressure plate 73 is rotatably installed at the lower end of the adjusting screw 72. The pressure plate 73 is located on the upper part of the floating seat 16; the position of the pressure plate 73 is adjusted by rotating the adjusting screw 72 to change the moving distance of the floating seat 16 relative to the support seat 15. When the distance increases, the moving distance of the defect recognition module 3 pushed by the floating rack 43 will also increase synchronously, thereby changing the upward moving distance of the support leg of the U-shaped frame 51.

[0020] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for identifying defects in in-service power line clamps, used to detect drainage line clamps hung on cables, characterized in that: include: Detection bracket, walking mechanism, defect recognition module, electric clamp; The walking mechanism is installed on the detection bracket, and the walking mechanism is used to support the detection bracket to walk on the cable line. A support column is provided at the lower part of the detection bracket, and a counterweight frame is slidably installed on the support column. A horizontal support frame is slidably installed on the counterweight frame. A support seat is fixed at the end of the horizontal support frame, and a floating seat is slidably provided on the support seat. The defect recognition module and the electric clamp are respectively arranged on the floating seats, and the defect recognition module is located on the upper part of the electric clamp.

2. The device for identifying defects of in-service power line clamps according to claim 1, characterized in that: The walking mechanism includes walking casters and a walking motor. The outer ring of the walking casters is provided with a groove matching the cable. There are two walking casters, and a transmission shaft is connected between the two walking casters. A worm wheel is installed on the transmission shaft. A worm is rotatably installed on the detection bracket. The worm engages with the worm wheel, and the walking motor drives the worm to rotate.

3. The device for identifying defects of in-service power line clamps according to claim 1, characterized in that: A supporting push rod is fixed to the bottom end of the support column, and the output end of the supporting push rod supports the counterweight frame upward. A lifting rack and a sinking rack are slidably installed on the support column. The lifting rack is parallel to the sinking rack, and the sinking rack is fixed on the counterweight frame. A cooperative gear is rotatably installed on the support column, and the cooperative gears are arranged on both sides of the lifting rack and are respectively engaged with the lifting rack and the sinking rack. A support plate is provided at the upper end of the lifting rack, and an arc-shaped groove matching the cable is provided on the upper part of the support plate.

4. The device for identifying defects of in-service power line clamps according to claim 1, characterized in that: A guide ridge is provided on one side of the support seat, and tooth segments are provided on both sides of the guide ridge. A floating gear is rotatably installed on the floating seat, and the floating gear is engaged with the tooth segments on both sides of the guide rack. A floating rack is slidably installed on the floating seat, and the floating rack engages with the floating gear. The defect recognition module is fixedly installed on the upper part of the floating rack.

5. The device for identifying defects of in-service power line clamps according to claim 1, characterized in that: The defect recognition module includes a U-shaped frame, a first scanning camera, and a second scanning camera. Ball screws are respectively installed on the two supporting legs of the U-shaped frame. The first scanning camera and the second scanning camera are respectively installed on the moving parts of the two ball screws. The lower ends of the two ball screws are connected to the same drive shaft through gears, and the drive shaft is driven to rotate by a scanning motor.

6. The device for identifying defects of in-service power line clamps according to claim 3, characterized in that: A buffer plate is slidably inserted into one end of the support plate, a buffer spring is provided at one end of the buffer plate located inside the support plate, and a receiving groove is provided at one end of the buffer plate located outside the support plate to cooperate with the outer ring of the drainage wire clamp.

7. The device for identifying defects of in-service power line clamps according to claim 6, characterized in that: A connecting cooperative column is fixed to the lower portion of the buffer plate, and the lower end of the cooperative column slides through the horizontal support frame.

8. The device for identifying defects of in-service power line clamps according to claim 1, characterized in that: The horizontal support is parallel to the supporting plate, and the support column is perpendicular to the horizontal support.

9. The device for identifying defects of in-service power line clamps according to claim 1, characterized in that: The upper and lower ends of the support seat are respectively provided with limit blocks, the floating seat is located between the two limit blocks, the upper limit block is connected to an adjusting screw by a thread, the lower end of the adjusting screw is rotatably installed with a pressure plate, and the pressure plate is located on the upper part of the floating seat.

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