Auxiliary clamping and fixing equipment for power transmission line detection

Abstract

The invention relates to auxiliary clamping and fixing equipment for power transmission line detection, which comprises a mounting seat, a telescopic rod, a clamping unit and a driving unit, and is characterized in that the mounting seat is mounted at the top of the telescopic rod, and a mounting groove is formed in the mounting seat; the clamping unit comprises an upper clamping piece, a lower clamping piece and a first shaft, the first shaft is installed in the installation groove, one end of the upper clamping piece and one end of the lower clamping piece are connected to the first shaft in a sleeving mode, and the upper clamping piece and the lower clamping piece can rotate around the first shaft; one end of the driving unit is hinged to the lower clamping piece, and the other end of the driving unit is installed at the lower end of the telescopic rod. According to the equipment, through reasonable structural design, stable clamping and fixing of the power transmission line are realized, the problem of inaccurate detection caused by line shaking in the existing detection technology is effectively solved, meanwhile, the equipment has the advantages of being high in adaptability, convenient to operate, reliable in structure and the like, the accuracy and efficiency of power transmission line detection are remarkably improved, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, and in particular to a clamping and fixing device for auxiliary testing of power transmission lines. Background Technology

[0002] Transmission lines are the core carriers for power system energy transmission, and their operational safety and stability directly affect the reliability of power supply. Transmission lines are exposed to complex outdoor environments for extended periods, making them susceptible to strong winds, heavy rain, icing, galloping, external impacts, and material aging. This can lead to potential faults such as conductor wear, insulation damage, loose joints, and hardware failure. If these faults are not detected and addressed promptly and accurately, they can easily cause short circuits, power outages, or even large-scale blackouts, resulting in significant economic losses and adverse social impacts. Therefore, conducting regular and efficient inspections of transmission lines is crucial.

[0003] Currently, the power industry relies heavily on various transmission line testing equipment for transmission line inspection. The core testing method involves directly contacting the testing head with the transmission line surface to collect data on electrical parameters (such as resistance, capacitance, and partial discharge signals) and physical parameters (such as conductor diameter and insulation thickness) to identify and diagnose line faults. This type of testing equipment includes portable line insulation testing instruments, conductor wear detection devices, and online line monitoring terminals, which are widely used in routine inspections.

[0004] However, a key technical challenge exists in existing power transmission line inspection operations: current inspection equipment typically lacks corresponding auxiliary fixing structures. During inspection, positioning is achieved solely through the contact between the inspection head and the transmission line, failing to provide stable clamping and constraint. Because power transmission lines are located in highly open outdoor environments, they are easily affected by external factors, such as slight oscillations in a light breeze, large swaying in strong winds, airflow disturbances from nearby vehicles, and mechanical vibrations from adjacent construction areas. All of these can cause unexpected displacement and swaying of the power transmission lines.

[0005] Line vibration directly leads to a decrease in detection accuracy: On the one hand, the detection head only makes simple contact with the line, and when the line vibrates, relative slippage, unstable contact, or even temporary loss of contact can easily occur between the detection head and the line, resulting in jumps and distortions in the collected detection data, which cannot truly reflect the actual operating status of the transmission line; on the other hand, for detection scenarios that require the detection head to maintain a specific relative posture with the line (such as vertical contact or parallel scanning), line vibration will directly disrupt the preset detection posture, causing detection signal attenuation and detection range shift, making it difficult to accurately capture subtle defects in the line (such as pinholes in the insulation layer, local wear on the conductor, etc.).

[0006] The aforementioned inaccurate detection not only increases the workload of inspection personnel—requiring repeated testing to verify data validity and significantly reducing inspection efficiency—but may also lead to missed or misdiagnosed faults: missed diagnoses can cause potential faults to continue to develop, significantly increasing the safety risks of power transmission line operation; misdiagnoses may trigger unnecessary maintenance work, increasing operation and maintenance costs.

[0007] In the existing technology, there is no effective solution to the above problems, and the relevant testing equipment still lacks supporting auxiliary clamping and fixing structures. Therefore, developing an auxiliary device that can be adapted to various transmission line testing equipment, achieve stable clamping and fixing of transmission lines, and avoid interference with testing accuracy caused by line swaying has become an urgent technical need to be addressed in this field. It is of great significance for improving the accuracy and efficiency of transmission line testing and ensuring the safe and stable operation of the power system. Summary of the Invention

[0008] The purpose of this invention is to overcome the defects in the prior art and provide a clamping and fixing device for auxiliary testing of power transmission lines, which can solve the above-mentioned problems in the prior art.

[0009] A clamping and fixing device for auxiliary testing of power transmission lines includes a mounting base, a telescopic rod, a clamping unit, and a drive unit. The mounting base is installed on the top of the telescopic rod, and the mounting base is provided with a mounting groove; The clamping unit includes an upper clamping member, a lower clamping member, and a first shaft. The first shaft is installed in a mounting groove. One end of both the upper clamping member and the lower clamping member is sleeved on the first shaft, and both the upper clamping member and the lower clamping member can rotate around the first shaft. A drive unit, one end of which is hinged to the lower clamping member, and the other end of which is installed at the lower end of the telescopic rod.

[0010] Furthermore, the drive unit includes a hinge block, a limiting guide post, a pull rod, a wire drawing assembly, and a wire take-up assembly. Two hinge blocks are symmetrically arranged on both sides of the lower clamping member. One end of each hinge block is hinged to the end of the lower clamping member opposite to the first axis via a shaft. The other ends of the two hinge blocks are connected by a pull rod. A limiting guide groove is provided on each hinge block. One end of each limiting guide post is mounted on a mounting base, and the other end passes through the limiting guide groove. The limiting guide post can move freely along the limiting guide groove. One end of the wire drawing assembly is fixedly connected to the pull rod, and the other end is connected to the wire take-up assembly.

[0011] Furthermore, the take-up assembly includes a take-up reel, a rotating shaft, and a support sleeve. The support sleeve is fitted onto the telescopic rod, and the take-up reel is rotatably mounted on the support sleeve via the rotating shaft.

[0012] Furthermore, the drive unit also includes a fixing component, which includes a gear, a snap block, a snap seat, a spring, a snap post, and a toggle plate. One end of the rotating shaft passes through the bracket sleeve and is connected to the rotating rod. The gear is sleeved on the rotating shaft and located between the bracket sleeve and the rotating rod. The locking seat is installed on the bracket sleeve and located on one side of the gear. The locking seat has a locking groove. The locking block slides in the locking groove. The locking block has a guide groove. One end of the locking post is installed in the locking groove, and the other end of the locking post passes through the guide groove. The end of the locking block away from the gear is connected to the locking groove by a spring. The locking block has a locking connector near the gear end. The locking connector can be locked into the gear teeth.

[0013] Furthermore, the drive unit also includes several guide ring sleeves, which are mounted on the telescopic rod, and the guide ring sleeves are provided with holes to facilitate wire drawing.

[0014] Furthermore, the clamping unit includes a buffer assembly, and the upper clamping member and the lower clamping member are both provided with buffer assemblies on their opposing sides.

[0015] Furthermore, the buffer assembly includes a clamping plate, a guide rod, a limiting post, and a limiting spring. Both the upper clamping member and the lower clamping member have holes. One end of the guide rod is connected to the clamping plate through the hole, and the other end of the guide rod is connected to the limiting post. The limiting spring is sleeved on the guide rod and located between the clamping plate and the upper clamping member.

[0016] Furthermore, it also includes a handle, which is connected to the lower end of the telescopic rod.

[0017] The advantages and beneficial effects of this invention are as follows: (1) This equipment can form a ring-shaped clamping of the transmission line by rotating the upper clamping component and the lower clamping component around the first axis. Compared with the traditional detection method without a fixed structure, it can stably constrain the transmission line within the clamping area and avoid line shaking caused by external factors such as strong wind, airflow disturbance, and vibration. At the same time, the fixing component can lock the clamping state through the engagement of gear and snap-fit ​​connector to prevent loosening during the clamping process. This ensures that the transmission line remains stationary during the detection process, providing a basic guarantee for stable contact between the detection head and the line and accurate acquisition of detection data. This fundamentally improves the accuracy of transmission line detection and reduces the risk of missed or misjudged faults.

[0018] (2) The opening and closing angle of the clamping unit can be flexibly adjusted by the drive unit, and the elastic structure of the buffer component can be adapted to power transmission lines of different diameters, avoiding damage to the lines due to excessive clamping force, while ensuring the clamping stability of lines of different diameters, further improving the scene adaptability of the equipment.

[0019] (3) The overall structure of the equipment is compact, and the staff can complete the height adjustment, clamping and driving operations by holding the handle. The drive unit adopts the power transmission structure of "wire take-up component-wire drawing-hinged block" and sets the operation end at the lower end of the telescopic rod. The staff can complete the clamping / releasing action without close contact with the high-altitude power transmission line, which improves the safety of operation. At the same time, the toggle unlocking design of the fixing component is simple and convenient, and can quickly complete the release of the clamping state, shortening the overall time of equipment alignment, fixing and disassembly, improving the efficiency of detection assistance and reducing the workload of the staff.

[0020] (4) The cooperation between the limit guide post and the upper limit guide groove of the hinge block forms a precise constraint on the rotation trajectory of the lower clamping part, avoiding deviation and jamming during the clamping process, and ensuring the smoothness of the clamping action.

[0021] (5) The guide ring sleeve guides the wire drawing, avoids friction and wear between the wire drawing and the telescopic rod or other components, extends the service life of the wire drawing, and ensures the stability of power transmission.

[0022] (6) The buffer assembly, through the elastic buffer of the limit spring, can not only avoid damage to the transmission line by rigid clamping, but also absorb the small vibration of the line during clamping, further improve the clamping stability, and at the same time reduce the mechanical wear of the clamping unit and extend the overall service life of the equipment.

[0023] (7) Through reasonable structural design, this equipment can achieve stable clamping and fixing of transmission lines, effectively solving the problem of inaccurate detection caused by line shaking in existing detection technologies. It also has advantages such as strong adaptability, convenient operation and reliable structure, which significantly improves the accuracy and efficiency of transmission line detection and reduces operation and maintenance costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a clamping and fixing device for auxiliary testing of power transmission lines provided by the present invention; Figure 2 for Figure 1 First-angle structural diagram; Figure 3 for Figure 2 A magnified view of part A in the image; Figure 4 for Figure 2 A magnified view of part B in the image; Figure 5 for Figure 1 A schematic diagram of the second-angle structure; Figure 6 for Figure 5 A magnified view of part C; Explanation of reference numerals in the attached figures: Mounting base 1, telescopic rod 2, mounting groove 3, upper clamping part 4, lower clamping part 5, first shaft 6, hinge block 7, limit guide post 8, pull rod 9, wire pull 10, limit guide groove 11, take-up reel 12, rotating shaft 13, bracket sleeve 14, gear 15, snap-fit ​​block 16, snap-fit ​​seat 17, spring 18, snap-fit ​​post 19, actuating plate 20, rotating rod 21, snap-fit ​​groove 22, guide groove 23, snap-fit ​​connector 24, guide ring sleeve 25, clamping plate 26, guide rod 27, limit post 28, limit spring 29, handle 30. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and 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 of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] like Figure 1-6 As shown, a clamping and fixing device for auxiliary testing of transmission lines includes a mounting base 1, a telescopic rod 2, a clamping unit, and a driving unit. The mounting base 1 is installed on the top of the telescopic rod 2, and the mounting base 1 is provided with a mounting groove 3; The clamping unit includes an upper clamping member 4, a lower clamping member 5, and a first shaft 6. The first shaft 6 is installed in the mounting groove 3. One end of the upper clamping member 4 and the lower clamping member 5 are both sleeved on the first shaft 6, and both the upper clamping member 4 and the lower clamping member 5 can rotate around the first shaft. The driving unit is hinged at one end to the lower clamping member 4 and at the other end to the lower end of the telescopic rod 2.

[0028] In the above technical solution, this equipment, through the rotational cooperation of the upper and lower clamping components around the first axis, can form a ring-like clamping of the transmission line. Compared with traditional detection methods without a fixed structure, it can stably constrain the transmission line within the clamping area, avoiding line swaying caused by external factors such as strong winds, airflow disturbances, and vibrations. Simultaneously, the fixing components, through the locking engagement of gears and locking connectors, can lock the clamping state, preventing loosening during clamping and ensuring that the transmission line remains stationary throughout the detection process. This provides a fundamental guarantee for stable contact between the detection head and the line, and accurate data acquisition, fundamentally improving the accuracy of transmission line detection and reducing the risk of missed or misdiagnosed faults.

[0029] As a preferred embodiment of the above technical solution, the drive unit includes a hinge block 7, a limiting guide post 8, a pull rod 9, a wire drawing 10, and a wire take-up assembly. Two hinge blocks 7 are symmetrically arranged on both sides of the lower clamping member 5. One end of each hinge block 7 is hinged to the end of the lower clamping member 5 away from the first shaft 6 via a shaft. The other ends of the two hinge blocks 7 are connected via the pull rod 9. A limiting guide groove 11 is provided on each hinge block 7. One end of the limiting guide post 8 is installed on the mounting base 1, and the other end passes through the limiting guide groove 11. The limiting guide post 8 can move freely along the limiting guide groove 11. One end of the wire drawing 10 is fixedly connected to the pull rod 9, and the other end of the wire drawing 10 is connected to the wire take-up assembly.

[0030] The cooperation between the limiting guide post and the upper limit guide groove of the hinge block provides precise constraint on the rotation trajectory of the lower clamping part, avoiding deviation or jamming during clamping and ensuring smooth clamping action.

[0031] As a preferred embodiment of the above technical solution, the take-up assembly includes a take-up reel 12, a rotating shaft 13, and a bracket sleeve 14. The bracket sleeve 14 is sleeved and installed on the telescopic rod 2, and the take-up reel 12 is rotatably installed on the bracket sleeve 14 via the rotating shaft 13.

[0032] As a preferred embodiment of the above technical solution, the drive unit further includes a fixing component, which includes a gear 15, a snap-fit ​​block 16, a snap-fit ​​seat 17, a spring 18, a snap-fit ​​post 19, a toggle plate 20, and a rotating rod 21. One end of the rotating shaft 13 passes through the bracket sleeve 14 and is connected to the rotating rod 21. The gear 15 is sleeved on the rotating shaft 13 and located between the bracket sleeve 14 and the rotating rod 21. The locking seat 17 is installed on the bracket sleeve 14 and located on one side of the gear 15. The locking seat 17 has a locking groove 22. The locking block 16 slides in the locking groove 22. The locking block 16 has a guide groove 23. One end of the locking post 19 is installed in the locking groove 22, and the other end of the locking post 19 passes through the guide groove 23. The end of the locking block 16 away from the gear 15 is connected to the locking groove 22 by a spring 18. The end of the locking block 16 near the gear 15 has a locking connector 24. The locking connector 24 can be locked in the gear teeth of the gear 15. The actuating plate 20 is installed on the locking block.

[0033] As a preferred embodiment of the above technical solution, the drive unit further includes a plurality of guide ring sleeves 25, which are mounted on the telescopic rod 2. Each guide ring sleeve 25 has a hole for easy wire drawing through. The guiding effect of the guide ring sleeves on the wire drawing avoids friction and wear between the wire and the telescopic rod or other components, extends the service life of the wire drawing, and ensures the stability of power transmission.

[0034] As a preferred embodiment of the above technical solution, the clamping unit includes a buffer assembly, and the upper clamping member 4 and the lower clamping member 5 are both provided with buffer assemblies on opposite sides.

[0035] As a preferred embodiment of the above technical solution, the buffer assembly includes a clamping plate 26, a guide rod 27, a limiting post 28, and a limiting spring 29. Both the upper clamping member 4 and the lower clamping member 5 have holes. One end of the guide rod 27 passes through the hole and connects to the clamping plate 26, while the other end connects to the limiting post 28. The limiting spring 29 is sleeved on the guide rod 27 and located between the clamping plate 26 and the upper clamping member 4. Through the elastic buffering provided by the limiting spring, the buffer assembly not only avoids damage to the transmission line caused by rigid clamping but also absorbs minor vibrations of the line during clamping, further improving clamping stability. Simultaneously, it reduces mechanical wear of the clamping unit and extends the overall service life of the equipment.

[0036] As a preferred embodiment of the above technical solution, it further includes a handle 30, which is connected to the lower end of the telescopic rod 2.

[0037] The working principle of this invention is as follows: The core implementation logic of the clamping and fixing device for auxiliary power transmission line testing described in this invention is as follows: The overall height of the device is adjusted by a telescopic rod to accommodate power transmission lines of different heights; a drive unit drives the clamping unit to achieve stable clamping / releasing of the power transmission line; and the cooperation of various preferred components ensures the accuracy, stability, and ease of operation of the clamping action. Specifically, as follows: S1: Equipment Positioning and Height Adjustment: Operators can control the entire equipment via the handle at the bottom of the handheld device. Based on the height of the transmission line to be inspected, the telescopic pole's extension length is adjusted, allowing the mounting base and clamping unit at the top of the telescopic pole to precisely move to the height of the transmission line, completing the initial alignment of the equipment with the inspection target. This stage, through the telescopic pole's extension function, breaks the limitations of traditional close-range manual operation, adapting to transmission line inspection scenarios at different installation heights.

[0038] S2: The specific operation of the clamping unit opening and closing drive is as follows: Clamping preparation: In the initial state, the upper clamping component and the lower clamping component are in an open state around the first axis. The staff adjusts the transmission line to be tested to be in the clamping area between the upper and lower clamping components by using the telescopic rod. Clamping Drive: The wire winding is achieved by manipulating the take-up assembly. One end of the wire is fixedly connected to the pull rod. The winding force is transmitted to the pull rod through the wire, which in turn drives the two hinge blocks connected to the pull rod to move synchronously. Since one end of the hinge block is hinged to the end of the lower clamping member that is away from the first axis, and the limiting guide groove on the hinge block is slidably engaged with the limiting guide post on the mounting base, the limiting guide post constrains the movement trajectory of the hinge block, causing the hinge block to drive the lower clamping member to rotate upward around the first axis under the action of the wire pulling force. Clamping and locking: As the lower clamping member rotates upward, the distance between it and the upper clamping member gradually decreases until the buffer components on their opposing sides are tightly fitted with the transmission line, completing the clamping of the transmission line. At this point, the clamping state is locked by a fixing component: the gear rotates synchronously with the shaft of the take-up assembly, and the spring always applies an elastic thrust toward the gear to the locking block, causing the locking connector on the locking block to engage in the gear tooth gap, restricting the gear from rotating in the opposite direction, thereby preventing wire loosening and clamping force failure, and ensuring the stability of the clamping state; Release and Reset: After the test is completed, the staff uses the toggle plate to drive the clamp block to slide along the clamp slot of the clamp seat, so that the clamp connector is disengaged from the gear teeth and the rotation restriction of the gear is released; then the rotating rod of the take-up assembly is rotated in the opposite direction to loosen the wire pull, and the lower clamping part rotates in the opposite direction around the first axis under its own weight and the reaction force of the test line, and the upper and lower clamping parts return to the open state, so that the equipment can be removed from the transmission line.

[0039] In addition, during the wire drawing process, several guide rings installed on the telescopic rod provide guidance and constraint for the wire drawing, preventing the wire from shifting or tangling during winding / unwinding, and ensuring the smoothness of power transmission; during the clamping process, the buffer components on the opposite sides of the upper and lower clamping parts achieve flexible adjustment of the clamping force through the elastic buffering effect of the limit spring.

[0040] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention includes, but is not limited to, the embodiments described in the specific implementation. Any other implementations derived by those skilled in the art based on the technical solutions of this invention are also within the scope of protection of this invention.

Claims

1. A clamping and fixing device for power line inspection assistance, characterized by: Including mounting seat (1), telescopic rod (2), clamping unit and drive unit, The mounting seat (1) is installed at the top of the telescopic rod (2), and the mounting seat (1) is provided with a mounting groove (3) therein. The clamping unit comprises an upper clamping piece (4), a lower clamping piece (5), a first shaft (6), a buffer assembly, the first shaft (6) is installed in the mounting groove (3), one end of the upper clamping piece (4) and the lower clamping piece (5) is sleeved on the first shaft (6), and the upper clamping piece (4) and the lower clamping piece (5) can rotate around the first shaft; The opposite sides of the upper clamping piece (4) and the lower clamping piece (5) are provided with buffer assemblies. The drive unit is hingedly connected to the lower clamping piece (4) at one end and is installed at the lower end of the telescopic rod (2) at the other end.

2. The clamping and fixing device for transmission line inspection according to claim 1, characterized in that: The drive unit comprises a hinged block (7), a limiting guide column (8), a pull rod (9), a pull wire (10) and a take-up assembly, two hinged blocks (7) are symmetrically arranged on both sides of the lower clamping piece (5), one end of the hinged block (7) is hingedly connected to the end of the lower clamping piece (5) away from the first shaft (6), the other ends of the two hinged blocks (7) are connected by the pull rod (9), the hinged block (7) is provided with a limiting guide groove (11), one end of the limiting guide column (8) is installed on the mounting seat (1), the other end penetrates through the limiting guide groove (11) and is arranged, the limiting guide column (8) can freely move along the limiting guide groove (11), one end of the pull wire (10) is fixedly connected with the pull rod (9), the other end of the pull wire (10) is connected with the take-up assembly.

3. The clamping and fixing device for transmission line inspection according to claim 2, characterized in that: The take-up assembly comprises a take-up wheel (12), a rotating shaft (13) and a bracket sleeve (14), the bracket sleeve (14) is sleeved and installed on the telescopic rod (2), and the take-up wheel (12) is rotatably installed on the bracket sleeve (14) through the rotating shaft (13).

4. The clamping and fixing device for transmission line inspection according to claim 3, characterized in that: The drive unit further comprises a fixing assembly, the fixing assembly comprises a gear (15), a clamping block (16), a clamping seat (17), a spring (18), a clamping column (19) and a rotating rod (21), one end of the rotating shaft (13) penetrates through the bracket sleeve (14) and is connected with the rotating rod (21), the gear (15) is sleeved on the rotating shaft (13) and located between the bracket sleeve (14) and the rotating rod (21); The clamping seat (17) is installed on the bracket sleeve (14) and located on one side of the gear (15), the clamping seat (17) is provided with a clamping groove (22) therein, the clamping block (16) is slidably connected in the clamping groove (22), the clamping block (16) is provided with a guide groove (23), one end of the clamping column (19) is installed in the clamping groove (22), the other end of the clamping column (19) penetrates through the guide groove (23) and is arranged, one end of the clamping block (16) away from the gear (15) is connected with the clamping groove (22) through the spring (18), the clamping block (16) is provided with a clamping head (24) close to the gear (15), and the clamping head (24) can be clamped in the gear teeth of the gear (15).

5. The clamping and fixing device for transmission line inspection according to claim 4, characterized in that: The driving unit further comprises a plurality of guide sleeves (25) mounted on the telescopic rod (2), and the guide sleeves (25) are provided with holes for facilitating the wire to pass through.

6. The clamping and fixing device for transmission line inspection according to claim 5, characterized in that: The fixing assembly further comprises a push plate (20) mounted on the clamping block.

7. The clamping and fixing device for transmission line inspection according to claim 6, characterized in that: The buffer assembly comprises a clamping plate (26), a guide rod (27), a limiting column (28) and a limiting spring (29), the upper clamping piece (4) and the lower clamping piece (5) are both provided with holes, one end of the guide rod (27) penetrates the hole and is connected with the clamping plate (26), the other end of the guide rod (27) is connected with the limiting column (28), and the limiting spring (29) is sleeved on the guide rod (27) and located between the clamping plate (26) and the upper clamping piece (4).

8. The clamping and fixing device for transmission line inspection according to claim 1, characterized in that: The device further comprises a handle (30) connected with the lower end of the telescopic rod (2).

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