High-voltage transmission line insulator zero value detection device

Abstract

The invention belongs to the technical field of electric appliances, and provides a high-voltage transmission line insulator zero-value detection device, which comprises a mounting frame, a crawling assembly, a detection assembly and an auxiliary alignment assembly, and is characterized in that the mounting frame is n-shaped, the top of the mounting frame is provided with a hanging bracket, and the hanging bracket is used for hooking of an unmanned aerial vehicle; the crawling assembly is arranged at the top of the mounting frame, is connected with the mounting frame and is used for driving the mounting frame to move on the insulator chain along the extension direction of the insulator chain; the auxiliary aligning assembly comprises two auxiliary wheel sets, and the two auxiliary wheel sets are arranged at the bottoms of the two sides of the mounting frame correspondingly and connected with the mounting frame. According to the high-voltage transmission line insulator zero value detection device provided by the invention, the mounting frame is guided to move to be aligned with the insulator chain through the auxiliary assembly, so that the detection device is more easily aligned with the insulator chain, and the mounting difficulty is reduced.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, specifically relating to a zero-value detection device for high-voltage transmission line insulators. Background Technology

[0002] Insulator strings are core components of high-voltage transmission lines, their primary function being to provide reliable electrical insulation. By isolating conductors from towers, they prevent current leakage to the ground, ensuring efficient power transmission. They must also withstand extreme conditions such as lightning strikes and switching overvoltages to prevent flashovers and short-circuit accidents. Furthermore, insulator strings provide mechanical support, balancing the vertical weight and horizontal tension of the conductors. Especially in harsh environments such as ice, snow, and strong winds, their mechanical strength directly determines whether the line can maintain stable operation. If an insulator string fails, it may lead to conductor detachment or grounding faults, causing widespread power outages. Therefore, their performance is crucial to the safety of the entire power grid.

[0003] During operation, porcelain insulator strings on transmission lines are subjected to long-term electrical, thermal, mechanical, and environmental stresses, leading to aging of the porcelain body, damage to the glaze, and corrosion of the steel cap, which in turn causes a decline in insulation performance. Contamination on the insulator surface (salt, dust, etc.) can easily form a conductive layer under humid conditions, causing flashover tripping. Traditional methods (visual inspection, spark gaps) are insufficient to effectively detect internal cracks. The accumulation of these factors leads to a decline in insulator performance, eventually resulting in zero-value insulators. In the event of lightning strikes or external forces, there is a risk of sudden insulator breakage or string failure, posing a serious threat to power grid safety.

[0004] Therefore, it is necessary to regularly inspect the insulator strings on high-voltage transmission lines. To reduce labor intensity and improve inspection efficiency, some inspection devices that use drones for hoisting have emerged on the market. During operation, the drone hoists the inspection device onto the insulator string, and then controls the device to move along the string to test the resistance of the insulator.

[0005] However, existing testing devices are not easy to align with insulator strings during hoisting, making installation quite difficult. Summary of the Invention

[0006] This invention provides a zero-value detection device for high-voltage transmission line insulators, aiming to solve the technical problem that existing detection devices are difficult to align with insulator strings during hoisting, making installation quite challenging.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A zero-value detection device for high-voltage transmission line insulators is provided, comprising: an installation frame, a crawling assembly, a detection assembly, and an auxiliary alignment assembly. The installation frame is n-shaped with a hanger at the top, which is used for hooking a drone. The crawling assembly is connected to the top of the installation frame and is used to drive the installation frame to move along the extension direction of the insulator string. The detection assembly is connected to the installation frame and is used to detect the resistance value of the insulator string. The auxiliary alignment assembly includes two auxiliary wheel sets, which are respectively connected to the bottom of both sides of the installation frame. Each auxiliary wheel set includes a first drive assembly and several rollers. The rollers are connected to the installation frame, and the axis of the rollers is parallel to the movement direction of the crawling assembly, used to contact the insulator during hoisting. The power output end of the first drive assembly is connected to the rollers and is used to drive the rollers to rotate. The rollers in the two auxiliary wheel sets rotate in opposite directions, with the opposite side rotating upwards.

[0008] It should be noted that the hanger is convex, curved, or U-shaped, and is directly or indirectly fixed to the mounting frame, with a large space on the lower side. During hoisting, a hook is set on the drone, which hooks onto the hanger to lift the testing device onto the insulator string. If the mounting frame is slightly to the right relative to the insulator, the roller on the left side of the mounting frame contacts the insulator and moves the mounting frame to the left, guiding it to align with the insulator string. If the mounting frame is slightly to the left relative to the insulator, the roller on the right side of the mounting frame contacts the insulator and moves the mounting frame to the right, guiding it to align with the insulator string. Therefore, precise drone control is not required to align the testing device with the insulator string.

[0009] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, the width of the roller is greater than the distance between two insulators on the insulator string.

[0010] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, a liquid bladder surrounds the outside of the roller, and the liquid bladder is fixedly connected to the roller.

[0011] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, the surface of the liquid bladder is provided with multiple suction cups.

[0012] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, the mounting frame includes a top frame and two side frames. The two side frames are respectively located on the lower side of both ends of the top frame, connected to the top frame and extending downward to form an n-shaped structure. The crawling assembly is connected to the top frame. The two auxiliary wheel sets are connected to the bottom of the two side frames one-to-one. The detection assembly is connected to the side frames or the top frame.

[0013] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, the top frame has an upwardly convex arc-shaped structure.

[0014] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, the crawling assembly includes a mounting frame, two synchronous pulleys, a synchronous belt, a second drive assembly, and several support rods. The mounting frame is connected to the top frame. The two synchronous pulleys are spaced apart along the direction of movement and connected to the mounting frame. The synchronous belt is wound around the two synchronous pulleys. The support rods are located inside the synchronous belt and connected to the mounting frame. The support rods abut against the synchronous belt to support the synchronous belt. The second drive assembly is connected to the mounting frame, and its power output end is connected to one of the synchronous pulleys to drive the synchronous pulley to rotate. Spacer frames are fixed at both ends of the upper side of the mounting frame, and the hanger is connected to the spacer frames.

[0015] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, the detection component includes a servo motor, a connecting frame, and two probes. The servo motor is connected to the top frame, and its power output end is connected to the connecting frame. The two probes are fixedly mounted on the connecting frame at intervals along the movement direction of the crawling component. The servo motor drives the connecting frame to swing back and forth about the movement direction of the crawling component as the axis.

[0016] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, two guide rods are further included. The two guide rods are respectively disposed on the inner side of the top frame, connected to the top frame, and extend along the movement direction of the crawling assembly. The distance between the two guide rods is smaller than the diameter of the insulator.

[0017] In one possible implementation of the zero-value detection device for high-voltage transmission line insulators provided by the present invention, a control box and a battery box are further included, wherein the control box and the battery box are respectively connected to the bottom of the two side frames.

[0018] The beneficial effects of the zero-value detection device for high-voltage transmission line insulators provided by this invention are as follows: Compared with the prior art, the zero-value detection device for high-voltage transmission line insulators provided by this invention designs the mounting frame in an n-shape and installs auxiliary wheel sets on both sides of the bottom of the mounting frame. When a drone hooks onto the hanger and hoists the detection device to the top of the insulator string, if the mounting frame is not aligned with the insulator string, the rollers at the bottom of the mounting frame will contact the insulator. The rollers on both sides of the mounting frame rotate in opposite directions, with the opposite side rotating upwards. Therefore, if the mounting frame is to the right relative to the insulator, the roller on the left side of the mounting frame will contact the insulator and move the mounting frame to the left, guiding the mounting frame to a state aligned with the insulator string; if the mounting frame is to the left relative to the insulator, the roller on the right side of the mounting frame will contact the insulator and move the mounting frame to the right, guiding the mounting frame to a state aligned with the insulator string. This makes it easier for the detection device to align with the insulator string and reduces the installation difficulty. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the zero-value detection device for high-voltage transmission line insulators provided in an embodiment of the present invention; Explanation of reference numerals in the attached figures: 11. Top frame; 111. Curved plate; 112. First horizontal plate; 12. Side frame; 121. Vertical plate; 122. Second horizontal plate; 13. Hanger; 21. Mounting bracket; 22. Synchronous pulley; 23. Synchronous belt; 24. Second drive assembly; 25. Support rod; 26. Spacer frame; 31. Servo motor; 32. Connecting frame; 33. Probe; 40. Guide rod; 51. Roller; 52. First drive assembly; 53. Liquid bladder; 54. Suction cup; 60. Control box; 70. Battery box. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0027] Please refer to the following: Figure 1 The zero-value detection device for high-voltage transmission line insulators provided by the present invention will now be described. The high-voltage transmission line insulator zero-value detection device includes an installation frame, a crawling assembly, a detection assembly, and an auxiliary alignment assembly. The installation frame is n-shaped and has a hanger 13 at the top for hooking a drone. The crawling assembly is connected to the top of the installation frame and is used to drive the installation frame to move along the extension direction of the insulator string. The detection assembly is connected to the installation frame and is used to detect the resistance value of the insulator string. The auxiliary alignment assembly includes two auxiliary wheel sets, which are respectively connected to the bottom of both sides of the installation frame. Each auxiliary wheel set includes a first drive assembly 52 and several rollers 51. The rollers 51 are connected to the installation frame, and the axis of the rollers 51 is parallel to the movement direction of the crawling assembly, used to contact the insulator during hoisting. The power output end of the first drive assembly 52 is connected to the rollers 51 to drive the rollers 51 to rotate. The rollers 51 in the two auxiliary wheel sets rotate in opposite directions, with the opposite side rotating upwards, i.e., the roller 51 on the left side of the installation frame.

[0028] It should be noted that the hanger 13 is convex, arc-shaped or U-shaped, and is directly or indirectly fixedly connected to the mounting frame, with a large space on its lower side. During hoisting, a hook is set on the drone, which hooks onto the hanger 13 to hoist the detection device onto the top of the insulator string. If the mounting frame is to the right relative to the insulator, the roller 51 on the left side of the mounting frame contacts the insulator and moves the mounting frame to the left, guiding it to align with the insulator string. If the mounting frame is to the left relative to the insulator, the roller 51 on the right side of the mounting frame contacts the insulator and moves the mounting frame to the right, guiding it to align with the insulator string. This eliminates the need for precise drone control to align the detection device with the insulator string, thus greatly reducing the installation difficulty.

[0029] After the mounting frame moves to the insulator string, the detection device is gradually lowered onto the insulator string. At this time, the crawling component contacts the surface of the insulator string, and the detection device can be driven to move along the axial direction of the insulator string through the crawling component, thereby detecting the insulators one by one.

[0030] The first drive assembly 52 is an existing motor equipped with a speed reducer.

[0031] Each auxiliary wheel assembly includes two or more rollers 51, which are directly or indirectly connected to the mounting frame via a shaft and driven by the first drive assembly 52.

[0032] Preferably, each auxiliary wheel assembly includes two rollers 51 connected in series by a rotating shaft. The rotating shaft is rotatably engaged with the mounting frame. The first drive assembly 52 is connected to the mounting frame, and the power output end is connected to the rotating shaft, thereby driving the rollers 51 to rotate.

[0033] The beneficial effects of the zero-value detection device for high-voltage transmission line insulators provided in this embodiment of the invention are as follows: Compared with the prior art, the zero-value detection device for high-voltage transmission line insulators provided in this embodiment of the invention designs the mounting frame as an n-shape and installs auxiliary wheel sets on the bottom of both sides of the mounting frame. When the detection device is hoisted to the top of the insulator string by hooking the hanger 13 with a drone, if the mounting frame is not aligned with the insulator string, the roller 51 at the bottom of the mounting frame will contact the insulator. The rollers 51 on both sides of the mounting frame rotate in opposite directions, with the opposite side rotating upwards. Therefore, if the mounting frame is to the right relative to the insulator, the roller 51 on the left side of the mounting frame will contact the insulator and drive the mounting frame to the left, guiding the mounting frame to move to a state aligned with the insulator string; if the mounting frame is to the left relative to the insulator, the roller 51 on the right side of the mounting frame will contact the insulator and drive the mounting frame to the right, guiding the mounting frame to move to a state aligned with the insulator string. This makes it easier for the detection device to align with the insulator string and reduces the installation difficulty.

[0034] like Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, the width of the roller 51 is greater than the distance between two insulators on the insulator string. This ensures that the roller 51 can directly contact the insulators without getting stuck in the gap between two adjacent insulators.

[0035] like Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, a liquid bladder 53 surrounds the outer side of the roller 51, and the liquid bladder 53 is fixedly connected to the roller 51.

[0036] Specifically, the liquid bladder 53 is fixed and wrapped around the outside of the roller 51 by means of adhesive, screw fixation, etc. The liquid bladder 53 is filled with liquids such as water, oil, emulsion, etc. When in contact with the insulator, it can increase the contact area with the insulator by deformation, thereby increasing the friction and thus increasing the guiding force on the detection device.

[0037] like Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, the surface of the liquid bladder 53 is provided with a plurality of suction cups 54.

[0038] Specifically, suction cups 54 are evenly distributed on the surface of liquid bladder 53. When in contact with the insulator, the deformation of liquid bladder 53 allows suction cups 54 to adhere to the insulator and be adsorbed onto the surface of the insulator, further increasing the guiding force on the detection device.

[0039] like Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, the mounting frame includes a top frame 11 and two side frames 12. The two side frames 12 are respectively located on the lower side of both ends of the top frame 11, connected to the top frame 11 and extending downward to form an n-shaped structure. The crawling component is connected to the top frame 11, and two auxiliary wheel sets are connected to the bottom of the two side frames 12 one by one. The detection component is connected to the side frames 12 or the top frame 11.

[0040] Furthermore, such as Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, the top frame 11 has an upwardly convex arc-shaped structure that matches the shape of the insulator.

[0041] Specifically, the top frame 11 consists of two arc-shaped plates 111 spaced apart along the direction of movement and a first horizontal plate 112 connecting the two arc-shaped plates 111. The side frame 12 consists of two vertical plates 121 spaced apart along the direction of movement and a second horizontal plate 122 connecting the two vertical plates 121. The vertical plates 121 are connected to the arc-shaped plates 111 to form a frame structure, which reduces the amount of material while ensuring installation space and overall strength.

[0042] like Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, the crawling assembly includes a mounting frame 21, two synchronous pulleys 22, a synchronous belt 23, a second drive assembly 24, and several support rods 25. The mounting frame 21 is connected to the top frame 11. The two synchronous pulleys 22 are spaced apart along the direction of movement and connected to the mounting frame 21. The synchronous belt 23 is wound around the two synchronous pulleys 22. The support rods 25 are located inside the synchronous belt 23 and connected to the mounting frame 21, abutting against the synchronous belt 23 to support it. The second drive assembly 24 is connected to the mounting frame 21, and its power output end is connected to one of the synchronous pulleys 22 to drive the synchronous pulley 22 to rotate. Spacing frames 26 are fixed at both ends of the upper side of the mounting frame 21, and the hanger 13 is connected to the spacing frames 26. The first drive assembly 52 is an existing motor equipped with a reducer.

[0043] It should be noted that the spacer 26 is located on the upper side of the synchronous belt 23 and is fixedly connected to the mounting frame 21. The middle part of the spacer 26 is the middle part of the entire detection device. The hanger 13 is connected to the middle part of the spacer 26, so that the detection device is more stable after being lifted and will not tilt significantly.

[0044] like Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, the detection component includes a servo motor 31, a connecting frame 32, and two probes 33. The servo motor 31 is connected to the top frame 11, and the power output end is connected to the connecting frame 32. The two probes 33 are fixedly mounted on the connecting frame 32 at intervals along the movement direction of the crawling component. The servo motor 31 drives the connecting frame 32 to swing back and forth about the movement direction of the crawling component as the axis.

[0045] It should be noted that high-voltage transmission lines typically have two strings of insulators arranged in parallel. The detection device is suspended on one of the insulator strings and is driven by a servo motor 31 to swing the probe 33 back and forth at a certain angle to contact the insulator, thereby detecting the insulators on the two parallel strings and improving detection efficiency.

[0046] like Figure 1As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, two guide rods 40 are also included. The two guide rods 40 are respectively disposed inside the top frame 11, connected to the top frame 11, and extend along the movement direction of the crawling assembly. The distance between the two guide rods 40 is less than the diameter of the insulator.

[0047] It should be noted that the guide rod 40 is used to guide the movement of the detection device. The two ends of the guide rod 40 are tilted outward to prevent the guide rod 40 from being stuck by the insulator.

[0048] like Figure 1 As shown, in a specific embodiment of the zero-value detection device for high-voltage transmission line insulators provided in this invention, a control box 60 and a battery box 70 are also included. The control box 60 and the battery box 70 are respectively connected to the bottom of the two side frames 12 and can act as counterweights, so that the center of gravity of the detection device is located below the insulator string, thereby making the detection device less likely to tip over or fall. To further lower the center of gravity, additional cement or metal counterweights can be placed inside the control box 60 and the battery box 70.

[0049] It should be noted that the battery is electrically connected to the control box 60, and the control box 60 is electrically connected to the first drive assembly 52, the second drive assembly 24, and the detection assembly. The battery supplies power to the control box 60, the first drive assembly 52, the second drive assembly 24, and the detection assembly. The control assembly controls the actions of the first drive assembly 52, the second drive assembly 24, and the detection assembly. The control box 60 integrates a signal transceiver module to receive remote control commands from the ground and send detection data to the ground terminal.

[0050] It should be noted that when the detection device is in use, it observes from a third-person perspective provided by an unmanned vehicle carrying a camera, and remotely controls the actions of the first drive component 52, the second drive component 24, and the detection component from the ground based on the observed content.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A zero-value detection device for high-voltage transmission line insulators, characterized in that, The system includes an installation frame, a crawling assembly, a detection assembly, and an auxiliary alignment assembly. The installation frame is n-shaped with a top hanger for hooking a drone. The crawling assembly is connected to the top of the installation frame and moves the frame along the insulator string's extension direction. The detection assembly is connected to the installation frame and detects the resistance of the insulator string. The auxiliary alignment assembly includes two auxiliary wheel sets connected to the bottom of both sides of the installation frame. Each auxiliary wheel set includes a first drive assembly and several rollers. The rollers are connected to the installation frame, and their axes are parallel to the movement direction of the crawling assembly, allowing them to contact the insulators during hoisting. The power output of the first drive assembly is connected to the rollers to drive them to rotate. The rollers in the two auxiliary wheel sets rotate in opposite directions, with the opposite side rotating upwards.

2. The zero-value detection device for high-voltage transmission line insulators as described in claim 1, characterized in that, The width of the roller is greater than the distance between two insulators on the insulator string.

3. The zero-value detection device for high-voltage transmission line insulators as described in claim 1, characterized in that, The roller is surrounded by a liquid bladder, and the liquid bladder is fixedly connected to the roller.

4. The zero-value detection device for high-voltage transmission line insulators as described in claim 3, characterized in that, The surface of the liquid capsule is provided with multiple suction cups.

5. The zero-value detection device for high-voltage transmission line insulators as described in claim 1, characterized in that, The mounting frame includes a top frame and two side frames. The two side frames are respectively located on the lower side of both ends of the top frame, connected to the top frame and extending downward to form an n-shaped structure. The crawling component is connected to the top frame. The two auxiliary wheel sets are connected to the bottom of the two side frames one by one. The detection component is connected to the side frames or the top frame.

6. The zero-value detection device for high-voltage transmission line insulators as described in claim 5, characterized in that, The top frame has an upward-convex arc-shaped structure.

7. The zero-value detection device for high-voltage transmission line insulators as described in claim 6, characterized in that, The crawling assembly includes a mounting frame, two synchronous pulleys, a synchronous belt, a second drive assembly, and several support rods. The mounting frame is connected to the top frame. The two synchronous pulleys are spaced apart along the direction of movement and connected to the mounting frame. The synchronous belt is wound around the two synchronous pulleys. The support rods are located inside the synchronous belt and connected to the mounting frame. The support rods abut against the synchronous belt to support it. The second drive assembly is connected to the mounting frame, and its power output end is connected to one of the synchronous pulleys to drive the pulley to rotate. Spacer frames are fixed at both ends of the upper side of the mounting frame, and the hanger is connected to the spacer frames.

8. The zero-value detection device for high-voltage transmission line insulators as described in claim 6, characterized in that, The detection component includes a servo motor, a connecting frame, and two probes. The servo motor is connected to the top frame, and its power output end is connected to the connecting frame. The two probes are fixed at intervals on the connecting frame along the movement direction of the crawling component. The servo motor drives the connecting frame to swing back and forth about the movement direction of the crawling component.

9. The zero-value detection device for high-voltage transmission line insulators as described in claim 6, characterized in that, It also includes two guide rods, which are respectively located inside the top frame, connected to the top frame, and extend along the movement direction of the crawling assembly. The distance between the two guide rods is less than the diameter of the insulator.

10. The zero-value detection device for high-voltage transmission line insulators as described in claim 6, characterized in that, It also includes a control box and a battery box, which are respectively connected to the bottom of the two side frames.

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