Device and method for detecting creepage distance of peristaltic high-altitude insulator

Abstract

The invention relates to the technical field of power detection devices, in particular to a creepage distance detection device and method for a peristaltic high-altitude insulator. The device comprises an insulator located at the high altitude, a detection device is installed on a cable adjacent to the insulator, the detection device comprises a wriggling mechanism, a main control mechanism and a detection mechanism, and the wriggling mechanism comprises a body, a wriggling wheel and a wriggling motor, and the wriggling wheel and the wriggling motor are arranged in the body; the main control mechanism comprises a controller and a shell arranged on the outer side of the controller; the detection mechanism comprises a mechanical arm and a probe. The movement of the detection device along the cable is realized through the wriggling mechanism, the detection device can accurately reach the detection position of the high-altitude insulator, and the operation is convenient; the laser detector is adopted to perform fan-shaped multi-angle scanning, so that observation points on the surface of the insulator can be accurately obtained, the creepage distance is further calculated, and the detection precision is high; the detection device has telescopic and folding functions, is convenient to store and carry, and improves the practicability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of power detection devices, and in particular to a creepage distance detection device and a detection method for a creepage type aerial insulator. Background Art

[0002] In the power system, the insulation performance of high-altitude insulators is directly related to the safety and stability of power transmission. Creepage distance is a key indicator for measuring the insulation performance of insulators. Accurately measuring its value helps to timely detect potential faults of insulators and ensure the normal operation of the power system. In order to overcome related technical difficulties, those skilled in the art are constantly exploring. For example, the Chinese patent publication number is CN113238126A, which discloses a creeping insulator string degradation detection robot, which sets the detection mechanism on the creeping moving mechanism to detect the insulator string. However, this solution still has shortcomings: it is difficult to detect the creepage distance of high-altitude insulators. The high-altitude location makes it difficult for the detection equipment to accurately reach the detection point, which is inconvenient to operate and poses safety risks; the existing detection method has poor accuracy and it is difficult to obtain key information on the insulator surface, resulting in inaccurate creepage distance measurement; at the same time, the detection equipment is large in size and inconvenient to store and carry, which limits its practical application and promotion. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a creepage distance detection device and a detection method for a creepage type aerial insulator.

[0004] The technical solution adopted in the present invention is as follows: A creepage distance detection device for a creeping high-altitude insulator includes an insulator located at a high altitude, and a detection device is installed on a cable adjacent to the insulator. The detection device includes a creeping mechanism, a main control mechanism, and a detection mechanism, wherein: The peristaltic mechanism includes a body, a peristaltic wheel and a peristaltic motor arranged in the body. The body is cylindrical and has a through slot inside that matches the cable. The peristaltic wheel is arranged in the middle of the through slot. The peristaltic wheels are arranged around the cables and are connected to the peristaltic motor in the middle of the body. The main control mechanism includes a controller and a housing arranged outside the controller. The top of the housing is connected to a connecting seat via a connecting shaft, and the connecting seat is equipped with a peristaltic mechanism. A telescopic seat is provided laterally extending from the housing, and a detection mechanism is installed at the end of the telescopic seat. The detection mechanism includes a mechanical arm and a probe. The probe is connected to the mechanical arm through an electric cylinder. The probe is set toward the insulator and is used to detect the creepage distance of the insulator.

[0005] This technical solution uses a peristaltic mechanism to move the detection device along the cable, accurately reaching the detection position of the high-altitude insulator, and is easy to operate. A laser detector is used to perform fan-shaped multi-angle scanning, which can accurately obtain the observation point on the insulator surface and then calculate the creepage distance, with high detection accuracy. The detection device has telescopic and folding functions, which is convenient for storage and carrying, improving the practicality of the device. Specifically, the detection device is installed on the cable adjacent to the high-altitude insulator, ensuring that the body of the peristaltic mechanism fits tightly with the cable through its internal groove, and the peristaltic wheel is arranged around the cable and reliably connected to the peristaltic motor; the shell of the main control mechanism is connected to the connecting seat through a connecting shaft, and the peristaltic mechanism on the connecting seat is firmly installed. The detection mechanism is installed at the end of the telescopic seat to ensure that the mechanical arm and the probe are properly connected. After the detection is completed, the controller controls the telescopic mechanism to retract the mechanical arm and the probe to the shell for portable storage. After the shell is retracted, the signal line between the two ends of the shell can be used as a handle, making it convenient for the operator to carry the device.

[0006] In addition, the creepage distance detection device and detection method of the creeping type aerial insulator proposed in the present invention also have the following additional technical features: According to one embodiment of the present invention, a creeping mechanism is provided on at least one side of the housing; the creeping mechanisms cooperate with each other to drive the housing to adjust the distance relative to the insulator.

[0007] In this technical solution, when the peristaltic motor drives the peristaltic wheel to rotate, the friction between the peristaltic wheel and the cable is used to move the entire detection device along the cable. When multiple peristaltic mechanisms cooperate with each other, the detection device can even move in a vertical direction.

[0008] According to one embodiment of the present invention, the shell is arranged in a folded cylindrical shape, and its two ends and the middle are respectively hinged to the connecting seat through a connecting shaft; a signal line is provided between the two ends, and the controller is connected to the robotic arm, electric cylinder and probe through the signal line.

[0009] In this technical solution, the foldable cylindrical housing significantly reduces the size of the device when not in use, making it easy to carry and store. A telescopic base extends laterally from one side of the housing, providing ample movement space for the detection mechanism. Meanwhile, the controller is mounted elsewhere within the housing and connected to external components via signal cables, achieving compact and efficient space utilization.

[0010] According to one embodiment of the present invention, the shell also has a built-in telescopic mechanism, which includes a telescopic motor. The telescopic motor drives the telescopic seat to perform telescopic movement relative to the shell under the drive of the controller, driving the robotic arm to retract to the shell for portable storage.

[0011] In this technical solution, when the peristaltic mechanism remains stationary, the telescopic seat is driven by the telescopic motor to make a certain degree of fine adjustment, so that the probe can move to a certain extent. After the detection is completed, the shell is folded and stored to reduce the space occupied.

[0012] According to one embodiment of the present invention, after the shell is retracted, the signal line between the two ends of the shell is used as a handle.

[0013] In this technical solution, the signal line is originally used to transmit signals. After the shell is shrunk, the spatial position where it is located is reasonably utilized; using it as a handle eliminates the need to add a special handle structure, avoiding the spatial conflict problem caused by setting up a handle component in a limited space, and realizing efficient reuse of space.

[0014] According to one embodiment of the present invention, the probe is a laser detector, which uses fan-shaped multi-angle scanning on the insulator to obtain at least four observation points in succession, and connects the four observation points to obtain the entire light beam path, thereby obtaining the creepage distance of the insulator surface.

[0015] According to one embodiment of the present invention, the insulator is a glass or ceramic product with disc-shaped protrusions arranged at intervals, arranged in the shape of umbrella skirts or umbrella ribs; each fan-shaped multi-angle scan by the probe covers at least three disc-shaped protrusions.

[0016] To achieve the above object, the present invention also provides a method for detecting the creepage distance of a creeping aerial insulator.

[0017] A creepage distance detection method for creeping type aerial insulators comprises the following steps: S1. Install the detection device on the cable adjacent to the aerial insulator. The body of the peristaltic mechanism cooperates with the cable through the internal groove. The peristaltic wheel is arranged around the cable and connected to the peristaltic motor. S2. The peristaltic mechanism is started under the control of the controller, and the peristaltic motor drives the peristaltic wheel to rotate. Through the friction between the peristaltic wheel and the cable, the entire detection device moves along the cable and approaches the insulator; S3: The controller starts the telescopic motor in the telescopic mechanism, drives the telescopic seat to telescope relative to the housing, and unfolds the robotic arm and the probe to the working position; S4. The probe is connected to the robotic arm via an electric cylinder and is positioned toward the insulator. The probe begins to scan the insulator in a fan-shaped, multi-angle manner. Each scan covers at least three disc-shaped protrusions and obtains at least four observation points. The controller connects the four observation points to form a complete beam path, thereby calculating the creepage distance on the insulator surface. S5. After the detection is completed, the controller controls the telescopic mechanism to retract the robotic arm and the probe to the shell for portable storage; after the shell is retracted, the signal line between the two ends of the shell can be used as a handle.

[0018] This technical solution ensures that the peristaltic mechanism can move reliably with the help of the cable by matching the internal groove of the peristaltic mechanism body with the cable, and the peristaltic mechanism is started by the controller. The friction-based driving method is simple and effective, which can enable the detection device to approach the insulator smoothly and ensure that the detection device accurately reaches the detection area; the controller controls the telescopic motor in the telescopic mechanism to start, transitioning from the preparation stage to the actual detection stage, so that the probe can reach the appropriate position, thereby effectively detecting the insulator; by connecting the probe to the robotic arm and setting it toward the insulator, multi-angle scanning and multi-point observation methods can comprehensively and accurately obtain information on the insulator surface and derive accurate creepage distance; the controller controls the telescopic mechanism to retract the robotic arm and the probe to the shell, so as to realize portable storage of the detection device and facilitate carrying and transportation of the equipment; after the shell is retracted, the signal line between the two ends of the shell is used as a handle to further optimize the portability of the equipment. This design takes into account both the functional realization of the equipment and the convenience of use.

[0019] According to one embodiment of the present invention, in step S4, the specific steps of sector-shaped multi-angle scanning are as follows: In the first scan, the insulator is scanned in a fan-shaped multi-angle manner to form a light beam on the surface of the insulator. The controller calculates a series of fixed-point coordinates along the beam path as the first observation point. The second scan is to scan the insulator in a fan-shaped multi-angle manner again, forming another light beam on the insulator surface. The laser ranging software measures the distance of the second light beam and calculates the coordinates on the light beam as the second observation point. Similarly, after the laser light source completes the distance measurement of the four observation points, the repeated fixed-point coordinates will be deduplicated, and eventually a complete beam path fixed-point coordinate will be formed. The fixed-point coordinates are connected to calculate the length of the entire beam path, thereby calculating the creepage distance of the insulator surface.

[0020] In this technical solution, each observation point obtained during a scan complements the insulator surface features. The discrete observation point data contains height and distance information at different locations on the insulator surface. By calculating the length of each line segment and adding them together, the length of the entire beam path is obtained. On the insulator surface, the length of this beam path has a certain geometric relationship with the creepage distance of the insulator. This creepage distance is the shortest distance between two electrodes along the insulator surface. The beam path formed by the multi-angle sector scan can approximately simulate the direction of this shortest distance.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention realizes the movement of the detection device along the cable through the peristaltic mechanism, which can accurately reach the detection position of the high-altitude insulator, eliminating the need for manual climbing to operate, greatly improving the convenience and safety of detection.

[0022] (2) The present invention uses a laser detector as a probe to perform sector-shaped multi-angle scanning, which can accurately obtain the observation points on the surface of the insulator and calculate the precise creepage distance through scientific data processing and analysis.

[0023] (3) The present invention has telescopic and folding functions. After the detection is completed, the robotic arm and the probe can be retracted to the shell. At the same time, the shell is retractable, and the signal line is used as a handle, which is convenient for storage and carrying, thereby improving the practicality of the device and being suitable for use in various occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural diagrams of the detection device of the present invention.

[0025] Figure 2 This is one of the structural diagrams of the detection device of the present invention.

[0026] Figure 3 It is a structural diagram of the peristaltic mechanism.

[0027] Figure 4 It is a flow diagram of the detection method of the present invention.

[0028] In the figure: 1. Insulator; 2. Cable; 3. Peristaltic mechanism; 31. Main body; 32. Through slot; 33. Peristaltic wheel; 34. Peristaltic motor; 4. Connecting seat; 5. Connecting shaft; 6. Main control mechanism; 7. Signal line; 8. Telescopic seat; 9. Robotic arm; 10. Probe. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Example 1 like Figures 1 to 3 As shown, this embodiment provides a creepage distance detection device for a creeping high-altitude insulator, including an insulator 1 located at a high altitude, and a detection device installed on a cable 2 adjacent to the insulator 1. The detection device includes a creeping mechanism 3, a main control mechanism 6, and a detection mechanism, wherein: The peristaltic mechanism 3 includes a body 31 and a peristaltic wheel 33 and a peristaltic motor 34 disposed within the body 31. The body 31 is cylindrical and has a through slot 32 therein for engaging with the cable 2. The peristaltic wheel 33 is disposed in the middle of the through slot 32 and is disposed around the cable 2. The peristaltic wheels 33 are connected to the peristaltic motor 34 in the middle of the body 31. The main control mechanism 6 includes a controller and a housing disposed outside the controller. The top of the housing is connected to the connecting seat 4 via a connecting shaft 5. The connecting seat 4 is mounted on the peristaltic mechanism 3. The housing is laterally extended with a telescopic seat 8. The end of the telescopic seat 8 is mounted with a detection mechanism. The detection mechanism includes a mechanical arm 9 and a probe 10. The probe 10 is connected to the mechanical arm 9 through an electric cylinder. The probe 10 is set toward the insulator 1 and is used to detect the creepage distance of the insulator 1.

[0031] like Figures 1 to 3 As shown, the present technical solution realizes the movement of the detection device along the cable 2 by the peristaltic mechanism 3, which can accurately reach the detection position of the high-altitude insulator 1 and is easy to operate; the laser detector is used to perform fan-shaped multi-angle scanning, which can accurately obtain the observation point on the surface of the insulator 1 and then calculate the creepage distance, with high detection accuracy; the detection device has telescopic and folding functions, which is convenient for storage and carrying, and improves the practicality of the device. Specifically, the detection device is installed on the cable 2 adjacent to the high-altitude insulator 1, ensuring that the body 31 of the peristaltic mechanism 3 is tightly matched with the cable 2 through the through groove 32 inside it, and the peristaltic wheel 33 is arranged around the cable 2 and reliably connected to the peristaltic motor 34; the shell of the main control mechanism 6 is connected to the connecting seat 4 through the connecting shaft 5, and the peristaltic mechanism 3 on the connecting seat 4 is firmly installed. The detection mechanism is installed at the end of the telescopic seat 8 to ensure that the mechanical arm 9 and the probe 10 are properly connected; after the detection is completed, the controller controls the telescopic mechanism to retract the mechanical arm 9 and the probe 10 to the shell, realizing portable storage. After the shell is retracted, the signal line 7 between the two ends of the shell can be used as a handle to facilitate the operator to carry the device.

[0032] In addition, the creepage distance detection device and detection method of the creeping type aerial insulator proposed in the present invention also have the following additional technical features: According to one embodiment of the present invention, a peristaltic mechanism 3 is provided on at least one side of the housing; the peristaltic mechanisms 3 cooperate with each other to drive the housing to adjust the distance relative to the insulator 1 .

[0033] In this technical solution, when the peristaltic motor 34 drives the peristaltic wheel 33 to rotate, the friction between the peristaltic wheel 33 and the cable 2 is used to move the entire detection device along the cable 2. When multiple peristaltic mechanisms 3 cooperate with each other, the detection device can even move vertically, such as Figure 1 and Figure 2 shown.

[0034] According to one embodiment of the present invention, the shell is arranged in a folded cylindrical shape, and its two ends and the middle are hinged to the connecting seat 4 through a connecting shaft 5 respectively; a signal line 7 is provided between the two ends, and the controller is connected to the robotic arm 9, the electric cylinder and the probe 10 through the signal line 7.

[0035] In this technical solution, the foldable cylindrical housing significantly reduces the size of the device when not in use, making it easy to carry and store. A telescopic seat 8 extends laterally from one side of the housing, providing ample space for the detection mechanism to move. Meanwhile, the controller is mounted elsewhere within the housing and connected to external components via signal cables 7, achieving compact and efficient space utilization.

[0036] According to one embodiment of the present invention, the shell also has a built-in telescopic mechanism, which includes a telescopic motor. The telescopic motor drives the telescopic seat 8 to perform telescopic movement relative to the shell under the drive of the controller, driving the mechanical arm 9 to retract to the shell for portable storage.

[0037] In this technical solution, when the peristaltic mechanism 3 remains stationary, the telescopic seat 8 is driven by the telescopic motor to make a certain degree of fine adjustment, so that the probe 10 can move to a certain extent. After the detection is completed, the shell is folded and stored to reduce the space occupied.

[0038] According to one embodiment of the present invention, after the housing is retracted, the signal line 7 located between the two ends of the housing is used as a handle.

[0039] In this technical solution, the signal line 7 is originally used to transmit signals. After the shell is shrunk, its spatial position is just reasonably utilized; using it as a handle, there is no need to add a special handle structure, avoiding the space conflict problem caused by setting up a handle component in a limited space, and realizing efficient reuse of space.

[0040] According to one embodiment of the present invention, the probe 10 is a laser detector, which uses a fan-shaped multi-angle scan on the insulator 1 to obtain at least four observation points in succession, and connects the four observation points to obtain the entire light beam path, thereby obtaining the creepage distance of the surface of the insulator 1.

[0041] According to one embodiment of the present invention, the insulator 1 is a glass or ceramic product with disc-shaped protrusions arranged at intervals, arranged in the shape of umbrella skirts or umbrella ribs; each fan-shaped multi-angle scan of the probe 10 covers at least three disc-shaped protrusions.

[0042] Example 2 Based on Example 1, Figure 4 As shown, this embodiment provides a creepage distance detection method for creepage type aerial insulators, comprising the following steps: S1. Install the detection device on the cable 2 adjacent to the aerial insulator 1. The body 31 of the peristaltic mechanism 3 cooperates with the cable 2 through the through slot 32 inside it. The peristaltic wheel 33 is arranged around the cable 2 and is connected to the peristaltic motor 34. S2, the peristaltic mechanism 3 is started under the control of the controller, and the peristaltic motor 34 drives the peristaltic wheel 33 to rotate. Through the friction between the peristaltic wheel 33 and the cable 2, the entire detection device is driven to move along the cable 2 and approach the insulator 1; S3, the controller controls the telescopic motor in the telescopic mechanism to start, driving the telescopic seat 8 to telescope relative to the housing, and unfolding the robotic arm 9 and the probe 10 to the working position; S4. The probe 10 is connected to the robot arm 9 via an electric cylinder, and the probe 10 is positioned toward the insulator 1. The probe 10 begins to work, performing a sector-shaped multi-angle scan of the insulator 1. Each scan covers at least three disc-shaped protrusions, and at least four observation points are obtained successively. The controller connects the four observation points to form a complete beam path, and then calculates the creepage distance on the surface of the insulator 1. S5. After the detection is completed, the controller controls the telescopic mechanism to retract the robotic arm 9 and the probe 10 to the shell for portable storage; after the shell is retracted, the signal line 7 located between the two ends of the shell can be used as a handle.

[0043] The present technical solution ensures that the peristaltic mechanism 3 can move reliably with the help of the cable 2 by coordinating the internal groove 32 of the peristaltic mechanism 3 body 31 with the cable 2, and the peristaltic mechanism 3 is started by the controller. The friction-based driving method is simple and effective, which can enable the detection device to smoothly approach the insulator 1 and ensure that the detection device accurately reaches the detection area; the controller controls the telescopic motor in the telescopic mechanism to start, transitioning from the preparation stage to the actual detection stage, so that the probe 10 can reach the appropriate position, thereby effectively detecting the insulator 1; by connecting the probe 10 to the mechanical arm 9 and setting it toward the insulator 1, multi-angle scanning and multi-point observation methods can comprehensively and accurately obtain information on the surface of the insulator 1 and obtain accurate creepage distance; the controller controls the telescopic mechanism to retract the mechanical arm 9 and the probe 10 to the shell, so as to realize portable storage of the detection device and facilitate carrying and transportation of the equipment; after the shell is retracted, the signal line 7 located between the two ends of the shell is used as a handle to further optimize the portability of the equipment. This design takes into account both the functional realization of the equipment and the convenience of use.

[0044] According to one embodiment of the present invention, in step S4, the specific steps of sector-shaped multi-angle scanning are as follows: In the first scan, a fan-shaped multi-angle scan is performed on the insulator 1 to form a light beam on the surface of the insulator 1. The controller calculates a series of fixed-point coordinates of the light beam path as the first observation point. The second scan is performed on insulator 1 again in a fan-shaped multi-angle scan, forming another light beam on the surface of insulator 1. The laser ranging software measures the distance of the second light beam and calculates the coordinates on the light beam as the second observation point. Similarly, after the laser light source completes the distance measurement of the four observation points, the repeated fixed-point coordinates will be deduplicated, and eventually a complete beam path fixed-point coordinate will be formed. The fixed-point coordinates are connected to calculate the length of the entire beam path, thereby calculating the creepage distance of the surface of insulator 1.

[0045] In this technical solution, each observation point obtained during each scan complements the surface features of insulator 1. The discrete observation point data contains height and distance information at different locations on the surface of insulator 1. By calculating the length of each line segment and adding them together, the length of the entire beam path is obtained. On the surface of insulator 1, the length of this beam path has a certain geometric relationship with the creepage distance of insulator 1. This creepage distance is the shortest distance between two electrodes along the surface of insulator 1. The beam path formed by sector-shaped multi-angle scanning can approximately simulate the direction of this shortest distance.

[0046] Although the present invention is described in detail with reference to the accompanying drawings and in combination with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who can easily conceive of changes or substitutions within the technical scope disclosed in the present invention shall be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A creepage distance detection device for creeping high-altitude insulators, characterized in that: The invention comprises an insulator (1) located at a high altitude, a detection device is installed on a cable (2) adjacent to the insulator (1), and the detection device comprises a creeping mechanism (3), a main control mechanism (6) and a detection mechanism, wherein: The peristaltic mechanism (3) comprises a body (31) and a peristaltic wheel (33) and a peristaltic motor (34) arranged in the body (31). The body (31) is arranged in a columnar shape and has a through slot (32) therein that matches the cable (2). A peristaltic wheel (33) is arranged in the middle of the through slot (32). The peristaltic wheels (33) are arranged around the cable (2) and are connected to the peristaltic motor (34) in the middle of the body (31). The main control mechanism (6) includes a controller and a housing arranged outside the controller, the top of the housing being connected to a connecting seat (4) via a connecting shaft (5), and the connecting seat (4) being provided with a peristaltic mechanism (3); a telescopic seat (8) extending laterally from the housing, and a detection mechanism being provided at the end of the telescopic seat (8); The detection mechanism comprises a mechanical arm (9) and a probe (10), wherein the probe (10) is connected to the mechanical arm (9) via an electric cylinder, and the probe (10) is arranged toward the insulator (1) and is used to detect the creepage distance of the insulator (1).

2. The creepage distance detection device for creeping type aerial insulator according to claim 1, characterized in that: A creeping mechanism (3) is provided on at least one side of the housing; the creeping mechanisms (3) cooperate with each other to drive the housing to adjust the distance relative to the insulator (1).

3. The creepage distance detection device for creeping type aerial insulator according to claim 1, characterized in that: The housing is arranged in a folded cylindrical shape, and its two ends and the middle are respectively hinged to the connecting seat (4) through a connecting shaft (5); a signal line (7) is provided between the two ends, and the controller is connected to the mechanical arm (9), the electric cylinder and the probe (10) through the signal line (7).

4. The creepage distance detection device for creeping type aerial insulators according to claim 3, characterized in that: The housing also has a built-in telescopic mechanism, which includes a telescopic motor. The telescopic motor drives the telescopic seat (8) to perform telescopic movement relative to the housing under the control of the controller, thereby driving the mechanical arm (9) to retract to the housing for portable storage.

5. The creepage distance detection device for creeping type aerial insulator according to claim 4, characterized in that: After the shell is retracted, the signal line (7) located between the two ends of the shell is used as a handle.

6. The creepage distance detection device for creeping type aerial insulator according to claim 1, characterized in that: The probe (10) is a laser detector, which uses a fan-shaped multi-angle scanning method to scan the insulator (1), and obtains at least four observation points in succession. The four observation points are connected to obtain the entire light beam path, and then the creepage distance on the surface of the insulator (1) is obtained.

7. The creepage distance detection device for creeping type aerial insulator according to claim 6, characterized in that: The insulator (1) is a glass or ceramic product with disc-shaped protrusions arranged at intervals, arranged in the shape of an umbrella skirt or an umbrella rib; each sector-shaped multi-angle scan of the probe (10) covers at least three disc-shaped protrusions.

8. A creepage distance detection method for a creepage type aerial insulator, using the creepage distance detection device for a creepage type aerial insulator according to any one of claims 1 to 7, characterized in that: The steps include: S1. The detection device is installed on a cable (2) adjacent to the aerial insulator (1). The body (31) of the peristaltic mechanism (3) cooperates with the cable (2) through the through slot (32) therein. The peristaltic wheel (33) is arranged around the cable (2) and is connected to the peristaltic motor (34). S2, the peristaltic mechanism (3) is started under the control of the controller, and the peristaltic motor (34) drives the peristaltic wheel (33) to rotate, and through the friction between the peristaltic wheel (33) and the cable (2), the entire detection device is driven to move along the cable (2) and approach the insulator (1); S3, the controller controls the telescopic motor in the telescopic mechanism to start, driving the telescopic seat (8) to telescope relative to the housing, and unfolding the mechanical arm (9) and the probe (10) to the working position; S4, the probe (10) is connected to the robot arm (9) through the electric cylinder, and the probe (10) is set in the direction of the insulator (1); the probe (10) starts to work and performs a fan-shaped multi-angle scan on the insulator (1); each scan covers at least three disc-shaped protrusions and obtains at least four observation points in succession; the controller connects the four observation points to form a whole light beam path, and then calculates the creepage distance of the surface of the insulator (1); S5. After the detection is completed, the controller controls the telescopic mechanism to retract the mechanical arm (9) and the probe (10) to the housing for portable storage; after the housing is retracted, the signal line (7) located between the two ends of the housing can be used as a handle.

9. The creepage distance detection method of creeping type aerial insulator according to claim 8, characterized in that: In step S4, the specific steps of sector-shaped multi-angle scanning are as follows: In the first scan, the insulator (1) is scanned in a fan-shaped multi-angle manner to form a light beam on the surface of the insulator (1). The controller calculates a series of fixed-point coordinates of the light beam path as the first observation point; The second scan is to scan the insulator (1) at multiple angles in a fan shape again, and another light beam is formed on the surface of the insulator (1). The laser ranging software measures the distance of the second light beam and calculates the coordinates on the light beam as the second observation point. Similarly, after the laser light source completes the distance measurement of the four observation points, the repeated fixed-point coordinates are deduplicated, and finally a complete beam path fixed-point coordinate is formed. The fixed-point coordinates are connected to calculate the length of the entire beam path, thereby calculating the creepage distance of the insulator (1) surface.

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