A power engineering transmission line maintenance device

Abstract

The application provides a power engineering transmission line maintenance device, which comprises a rolling assembly, a driving part, an upper rolling body, a lower rolling body and an elastic member. The driving part is arranged on the fixed frame and connected with the upper rolling body. The elastic member is arranged on the fixed frame, and the lower rolling body is arranged on the elastic member. The driving part drives the upper rolling body to move towards or away from the lower rolling body, so as to change the distance between the upper rolling body and the lower rolling body. The auxiliary assembly comprises a stabilizing ring arranged on the fixed frame, so that the transmission line is clamped between the upper rolling body and the lower rolling body and is simultaneously clamped into the stabilizing ring. The maintenance mechanism is arranged on the fixed frame and is used for maintaining the transmission line clamped between the upper rolling body and the lower rolling body. The application can prevent the transmission line from being excessively squeezed during maintenance, avoid causing internal damage, and stabilize the transmission line to prevent excessive shaking of the transmission line from affecting the maintenance.

Description

Technical Field

[0001] This application belongs to the field of power transmission line maintenance technology, and in particular relates to a power engineering power transmission line maintenance device. Background Technology

[0002] Electric power engineering is an engineering and technical field related to the production, transmission, distribution and comprehensive utilization of electrical energy. It covers various power generation forms such as thermal power, hydropower, nuclear power and wind power, as well as key technologies such as ultra-high voltage transmission and smart grids. Electric power engineering requires the use of power transmission line maintenance equipment.

[0003] When power transmission line maintenance equipment rolls along the transmission line, it may cause damage to the transmission line due to the cold environment of the high altitude, where sections of the transmission line may be covered with ice. The maintenance equipment may not be able to automatically adapt, resulting in excessive compression of the transmission line and damage to its internal structure.

[0004] In addition, during the use of the maintenance equipment, if strong winds occur during high-altitude operations, causing the transmission lines to sway and shake continuously, the maintenance equipment will be unable to perform stable maintenance on the transmission lines. Utility Model Content

[0005] To address at least one of the aforementioned technical problems in the prior art, embodiments of this application provide a power transmission line maintenance device that can avoid excessive compression of transmission lines.

[0006] The technical solution adopted in this application embodiment is: a power transmission line maintenance device, comprising:

[0007] A rolling assembly includes a fixed frame, a driving component, an upper rolling body, a lower rolling body, and an elastic member. The driving component is disposed on the fixed frame and connected to the upper rolling body. The elastic member is disposed on the fixed frame, and the lower rolling body is disposed on the elastic member and located below the upper rolling body. A gap is formed between the upper rolling body and the lower rolling body. The driving component is used to drive the upper rolling body to move closer to or further away from the lower rolling body to change the gap between the upper rolling body and the lower rolling body, thereby clamping or releasing a power transmission line passing between the upper rolling body and the lower rolling body.

[0008] An auxiliary component includes two stabilizing rings disposed opposite each other on the fixed frame, such that when the transmission line is clamped between the upper rolling element and the lower rolling element, the two stabilizing rings are simultaneously engaged.

[0009] In an optional embodiment, the fixed frame includes a top frame and a bottom frame, and two side frames, the two ends of the top frame being connected to the top ends of the two side frames respectively, and the two ends of the bottom frame being connected to the bottom ends of the two side frames respectively; the driving component is fixed to the top frame; the upper rolling element and the lower rolling element are both located between the top frame and the bottom frame; and the elastic member is disposed on the bottom frame.

[0010] In an optional embodiment, the driving component includes a servo motor, the output shaft of which is connected to a threaded rod, and the top frame is provided with a through hole for the threaded rod to pass through.

[0011] A fixed cylinder is connected to the upper rolling element. The fixed cylinder has an internal thread and is threaded to the threaded rod. When the servo motor starts and drives the threaded rod to rotate, the fixed cylinder moves along the threaded rod and drives the upper rolling element to move in a direction closer to or away from the lower rolling element, so as to adjust the distance between the upper rolling element and the lower rolling element.

[0012] In an optional embodiment, the upper rolling element includes an upper support and an upper roller rotatably mounted on the upper support. The fixed cylinder is fixed to the upper support. The upper support is provided with an auxiliary plate extending axially along the upper roller. The fixed frame is provided with an auxiliary groove extending along the movement direction of the upper rolling element. The auxiliary plate is disposed in the auxiliary groove so that when the upper rolling element moves in a direction close to or away from the lower rolling element, the auxiliary plate moves along the auxiliary groove.

[0013] In an optional embodiment, the lower rolling element includes a lower support and a lower roller rotatably mounted on the lower support, wherein the axis of the lower roller is parallel to the axis of the upper roller; the transmission line is perpendicular to the axis of the upper roller and the axis of the lower roller.

[0014] In an optional embodiment, the elastic component includes a stabilizing cylinder, a spring, and a fixing block. The stabilizing cylinder is fixed to the bottom frame, the spring is disposed inside the stabilizing cylinder, one end of the spring is fixed to the bottom of the stabilizing cylinder, and the other end of the spring extends out of the stabilizing cylinder and is connected to the fixing block; the lower rolling element is disposed on the fixing block.

[0015] In an optional embodiment, an X-ray flaw detector is provided on the side of the bottom frame facing the top frame, and the X-ray flaw detector is used to inspect the power transmission line.

[0016] In an optional embodiment, the middle portions of the two side frames of the fixed frame are respectively provided with notches;

[0017] Both stabilizing rings are open circular rings and are respectively disposed on the notches of the two side frames. The center line connecting the two stabilizing rings passes between the upper rolling element and the lower rolling element.

[0018] In an optional embodiment, the stabilizing ring is provided with a baffle, the baffle being an arc shape with the same curvature as the stabilizing ring, and extending from one end of the opening of the stabilizing ring to block the opening; the baffle is provided with a protrusion.

[0019] In an optional embodiment, the inner wall of the stabilizing ring is provided with a wrapping brush, which is used to wrap the transmission line passing through the stabilizing ring; and / or

[0020] The power transmission line maintenance device also includes a U-shaped handle, the two ends of which are connected to the top and bottom edges of the fixed frame, respectively.

[0021] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: By setting an elastic member between the fixed frame and the lower rolling body, when encountering a transmission line covered with ice, the lower rolling body will press down on the elastic member, change the distance between the upper rolling body and the lower rolling body, prevent the maintenance device from excessively squeezing the transmission line, and avoid causing internal damage to the transmission line.

[0022] By setting a stabilizing ring on the fixed frame, when the transmission line sways excessively in strong winds, the transmission line can be confined within the stabilizing ring for pre-stabilization, ensuring that the transmission line will not leave the maintenance area when it is being repaired within the fixed frame.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0024] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0025] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0026] Figure 1 This is a schematic diagram of the structure of the power transmission line maintenance device according to an embodiment of this application.

[0027] Figure 2 This is an exploded view of the drive component, upper rolling element, and lower rolling element according to an embodiment of this application.

[0028] Figure 3 This is an exploded view of an elastic member according to an embodiment of this application.

[0029] Figure 4 This is another exploded view of the elastic member according to an embodiment of this application.

[0030] Figure 5 This is a diagram showing the usage status of the power transmission line maintenance device according to an embodiment of this application.

[0031] Figure label:

[0032] 1-Fixed frame; 11-Top frame; 12-Bottom frame; 13-Side frame; 2-Drive component; 21-Threaded rod; 3-Upper rolling element; 31-Upper bracket; 32-Upper roller; 33-Auxiliary plate; 34-Fixed cylinder; 4-Lower rolling element; 41-Lower bracket; 42-Lower roller; 5-Elastic component; 51-Stabilizing cylinder; 511-Guide groove; 52-Spring; 53-Fixed block; 54-Flange; 55-Guide block; 56-Telescopic rod;

[0033] 6-Stabilizing ring; 61-Opening; 7-Baffle; 71-Protrusion; 8-Wrapping brush;

[0034] 9 - X-ray flaw detector; 10 - U-shaped handle; M - power transmission line. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0036] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0038] like Figures 1 to 4 As shown in the figure, this application provides a power transmission line maintenance device (hereinafter referred to as the maintenance device), which includes a rolling assembly, an auxiliary assembly, and a maintenance mechanism. The rolling assembly includes a fixed frame 1, a driving component 2, an upper rolling body 3, a lower rolling body 4, and an elastic member 5. The driving component 2 is disposed on the fixed frame 1 and connected to the upper rolling body 3. The elastic member 5 is disposed on the fixed frame 1, and the lower rolling body 4 is disposed on the elastic member 5 and located below the upper rolling body 3, with a gap between the upper rolling body 3 and the lower rolling body 4. The driving component 2 is used to drive the upper rolling body 3 to move closer to or further away from the lower rolling body 4, so as to change the gap between the upper rolling body 3 and the lower rolling body 4 to adapt to transmission lines M with different outer diameters, and to clamp or release the transmission line M passing between the upper rolling body 3 and the lower rolling body 4. The auxiliary assembly includes two stabilizing rings 6, which are disposed opposite to each other on the fixed frame 1 so that the two stabilizing rings 6 can be engaged simultaneously. The inspection mechanism is mounted on the fixed frame 1 and is used to inspect and repair the power transmission line M held between the upper rolling body 3 and the lower rolling body 4. In this embodiment, when the inspection device is in use, if the surface of the power transmission line M is covered with ice, the lower rolling body 4 will press down on the elastic member 5, changing the distance between the upper rolling body 3 and the lower rolling body 4 to prevent excessive compression of the power transmission line M and potential damage to its interior. Furthermore, by setting a stabilizing ring 6, the power transmission line M is pre-stabilized by the stabilizing ring 6 mounted on the fixed frame, preventing the power transmission line M from swaying or shaking, and ensuring stable and smooth inspection.

[0039] In some embodiments, such as Figure 1As shown, the fixed frame 1 includes a top frame 11 and a bottom frame 12, and two side frames 13. The two ends of the top frame 11 are connected to the top ends of the two side frames 13, and the two ends of the bottom frame 12 are connected to the bottom ends of the two side frames 13, thus forming a roughly rectangular structure. The driving component 2 is fixed to the top frame 11. The upper rolling element 3 and the lower rolling element 4 are both located between the top frame 11 and the bottom frame 12. The elastic member 5 is located on the bottom frame 12. Two stabilizing rings 6 are respectively located on the two side frames 13. The fixed frame 1 has a simple and reasonable structure, facilitating the arrangement of the driving component 2, the upper rolling element 3, the lower rolling element 4, and the stabilizing rings 6, allowing the transmission line M to pass through the inside of the fixed frame 1 and complete the inspection.

[0040] In some embodiments, continue to combine Figure 1 The drive component 2 includes a servo motor, the output shaft of which is connected to a threaded rod 21. A through hole (not shown in the figure) is provided on the top frame 11 for the threaded rod 21 to pass through. The diameter of the through hole is larger than the outer diameter of the threaded rod 21, so that the wall of the through hole does not contact the threaded rod 21, thus preventing the through hole from interfering with the rotation of the threaded rod 21. Figure 2 As shown, a fixed cylinder 34 is connected to the upper rolling body 3. The fixed cylinder 34 is located below the top frame 11 and has internal threads. The fixed cylinder 34 is threadedly connected to the threaded rod 21. That is, the upper rolling body 3 is connected to the servo motor through the fixed cylinder 34 and the threaded rod 21. When the servo motor starts and drives the threaded rod 21 to rotate, the fixed cylinder 34 moves along the threaded rod 21 and drives the upper rolling body 3 to move closer to or further away from the lower rolling body 4, so as to adjust the distance between the upper rolling body 3 and the lower rolling body 4, clamping the power transmission line M between the upper rolling body 3 and the lower rolling body 4, or releasing the power transmission line M so that after the test is completed, the maintenance device can be removed from the power transmission line M.

[0041] Continue to combine Figure 2 The upper rolling body 3 includes an upper bracket and an upper roller 32 rotatably mounted on the upper bracket. The fixed cylinder 34 is fixed on the upper bracket. The side of the upper bracket is provided with an auxiliary plate 33 extending along the axial direction of the upper roller 32. When the upper rolling body 3 moves in a direction close to or away from the lower rolling body 4 (the direction close to or away from the lower rolling body 4 is the axial direction perpendicular to the upper roller 32), the auxiliary plate 33 stabilizes the up-and-down movement of the upper rolling body.

[0042] For example, a guide plate can be extended from the top edge 11 of the fixed frame toward the bottom edge 12 (the fixed plate is not shown in the figure because it is blocked by the fixed frame 1 and the upper rolling body 3). The guide plate is provided with an auxiliary groove along its extension direction (i.e., the vertical direction in the figure). The auxiliary plate 33 is located in the auxiliary groove. When the upper rolling body 3 moves toward or away from the lower rolling body 4, the auxiliary plate 33 moves along the auxiliary groove to guide the movement of the upper rolling body 3 and ensure the movement trajectory and stability of the upper rolling body 3.

[0043] In some embodiments, such as Figure 2 As shown, the lower rolling element 4 includes a lower support 41 and a lower roller 42 rotatably mounted on the lower support 41. The axis of the lower roller 42 is parallel to the axis of the upper roller 32. The transmission line M is perpendicular to the axes of the upper roller 32 and the lower roller 42. Thus, by using the parallel axes of the upper roller 32 and the lower roller 42, the transmission line M can be clamped and inspected.

[0044] Understandably, both the upper roller 32 and the lower roller 42 can rotate flexibly to allow the maintenance device to move smoothly along the transmission line M.

[0045] The upper roller 32 and the lower roller 42 have the same structure and dimensions. To ensure clamping stability, both the upper roller 32 and the lower roller 42 have a certain length in their respective axial directions, forming a roller-like structure. Both the upper support and the lower support 41 are U-shaped structures, with the two arms of the U-shape rotatably connected to the two ends of the upper roller 32 or the lower roller 42 in the axial direction, respectively.

[0046] In some embodiments, such as Figure 3 and Figure 4 As shown, the elastic component 5 includes a stabilizing cylinder 51, a spring 52, and a fixing block 53. The stabilizing cylinder 51 is fixed to the bottom frame 12. The spring 52 is located inside the stabilizing cylinder 51, with one end of the spring 52 fixed to the bottom of the stabilizing cylinder 51 and the other end extending out of the stabilizing cylinder 51 and connected to the fixing block 53. The lower rolling body 4 is located on the fixing block 53. Thus, when the power transmission line M between the upper rolling body 3 and the lower rolling body 4 becomes thickened due to ice or other factors, the lower rolling body 4 will press down on the spring 52, causing the spring 52 to contract inward into the stabilizing cylinder 51. This changes the distance between the upper rolling body 3 (upper roller 32) and the lower rolling body 4 (lower roller 42), preventing excessive compression of the power transmission line M and causing internal damage.

[0047] Furthermore, to ensure the smoothness of spring 52 during compression and release, such as Figure 3As shown, a flange 54 is provided around the lower outer periphery of the fixed block 53, and a guide block 55 protruding outward is provided on the flange 54. The inner wall of the stabilizing cylinder 51 is provided with a guide groove 511 extending along the axial direction parallel to the stabilizing cylinder 51, and the guide block 55 is located in the guide groove 511. When the surface of the transmission line M is covered with ice, the lower rolling body 4 will compress the spring 52 in the stabilizing cylinder 51 through the fixed block 53, causing the guide block 55 to slide vertically downward along the inner wall of the guide groove 511, stabilizing the deformation of the spring 52, and realizing the adaptability of the maintenance device to the cold environment of the plateau. After the maintenance is completed, after the transmission line M is removed from between the upper rolling body 3 and the lower rolling body 4, the lower rolling body 4 releases the downward pressure on the fixed block 53, the spring 52 extends stably, and pushes the guide block 55 to move upward along the guide groove 511 to reset its position.

[0048] like Figure 4 As shown, the lower end of the fixed block 53 is provided with a telescopic rod 56, and the spring 52 is sleeved on the telescopic rod 56. When the surface of the transmission line M is covered with ice, the lower rolling body 4 will squeeze the spring 52 in the stabilizing cylinder 51 through the fixed block 53, so that the spring 52 and the telescopic rod 56 will contract synchronously, stabilize the deformation of the spring 52, and realize the adaptability of the maintenance device to the cold environment of the plateau.

[0049] In some embodiments, the inspection facility may include an X-ray flaw detector 9. (Continuing with...) Figure 2 The X-ray flaw detector 9 is located on the side of the bottom frame 12 facing the top frame 11, and directly below the power transmission line M. See [reference needed]. Figure 5 The X-ray flaw detector 9 is used to inspect the transmission line M during transmission, improving the detection effect. The X-ray flaw detector 9 can be used to check for internal defects, cracks, or other hidden dangers in the transmission line M. For example, to ensure the stability of the X-ray flaw detector 9, a fixing groove (not shown due to being obscured by the X-ray flaw detector 9) can be opened off-center on the inner side of the bottom frame 12 of the fixed frame 1 (towards the top frame 11), and the X-ray flaw detector 9 is fixed within the fixing groove. The X-ray flaw detector 9 can be a model XXG2505.

[0050] To facilitate the installation of the servo motor, X-ray flaw detector 9, and elastic member 5, at least the middle portion of the top frame 11 and bottom frame 12 of the fixed frame 1 can be made wider. This arrangement also allows the upper rolling element 3 and lower rolling element 4 to be covered in the area between the top frame 11 and bottom frame 12.

[0051] In some embodiments, the middle portions of the two side frames 13 of the fixed frame 1 are respectively provided with notches (the notches are obscured by the stabilizing rings 6 and are not shown in the figure). Both stabilizing rings 6 are open circular rings, respectively located on the notches of the two side frames 13. The center line connecting the two stabilizing rings 6 passes between the upper rolling body 3 and the lower rolling body 4, and the openings 61 of the two stabilizing rings 6 face the same direction, facilitating the simultaneous stabilization of the transmission line M within the two stabilizing rings 6 through the openings 61. By providing notches on the fixed frame 1, it is convenient to fix the stabilizing rings 6 to the fixed frame 1, and it is also beneficial for the transmission line M, sandwiched between the upper rolling body 3 and the lower rolling body 4, to simultaneously pass through the two stabilizing rings 6, thereby achieving pre-stabilization of the transmission line M.

[0052] Furthermore, such as Figure 1 As shown, a baffle 7 is provided inside the stabilizing ring 6. The baffle 7 is an arc shape with the same curvature as the stabilizing ring 6. The baffle 7 can extend from one end of the opening 61 of the stabilizing ring 6 to block the opening 61. That is, the baffle 7 can extend and retract along the circumferential direction of the stabilizing ring 6 to open or block the opening 61. Figure 1 The middle baffle 7 is in the open opening 61 state and retracted into the stabilizing ring 6. Figure 5 The baffle 7 is in the state where it blocks the opening 61. The baffle 7 has a protrusion 71, which helps the operator move the baffle 7 during use. Specifically, the operator can pinch the protrusion 71 to pull the baffle 7 to extend or retract it. It should be noted that a damping design can be used between the baffle 7 and the stabilizing ring 6, allowing the baffle 7 to be held in any position when pulled out or retracted.

[0053] Continue to combine Figure 1 The inner wall of the stabilizing ring 6 is provided with a wrapping brush 8, which is used to wrap the transmission line M passing through the stabilizing ring 6. The wrapping brush 8 can play a simple cleaning and positioning role for the transmission line M, ensuring the smooth progress of the inspection.

[0054] like Figure 1 and Figure 5 As shown, the maintenance device also includes a U-shaped handle 10, with both ends of the U-shaped handle 10 connected to the top frame 11 and the bottom frame 12 of the fixed frame 1, respectively. For example, grooves can be formed on the sides of the top frame 11 and the bottom frame 12, and both ends of the U-shaped handle 10 can be embedded into these grooves to connect the U-shaped handle 10 to the fixed frame 1. In use, the operator can move the fixed frame 1 by holding the U-shaped handle 10.

[0055] The operating steps of the maintenance device in this application are as follows:

[0056] First step: The staff inserts the power transmission line M between the upper roller 32 and the lower roller 42 on the fixed frame 1, starts the servo motor on the fixed frame 1, the servo motor drives the threaded rod 21 to rotate, the threaded rod 21 rotates and drives the fixed cylinder 34 to move along the threaded rod 21, the fixed cylinder 34 drives the upper rolling body 3 to move towards the lower rolling body 4, so that the upper roller 32 of the upper rolling body 3 and the lower roller 42 of the lower rolling body 4 are in contact with the surface of the power transmission line M;

[0057] The second step: Before moving the maintenance device, the staff can insert the transmission line M into the stabilizing ring 6, let the wrapping brush 8 wrap around the power line, and slide the baffle 7 to block the transmission line M and prevent it from falling out of the stabilizing ring 6. When encountering strong winds and the transmission line M shakes excessively, the stabilizing ring 6 will pre-stabilize the transmission line M to ensure that it will not fall out of the maintenance range when it is being maintained within the fixed frame 1. The wrapping brush 8 can play a simple cleaning and positioning role.

[0058] The third step: When the staff holds the inspection device and rolls it along the transmission line M for inspection, they may encounter parts of the transmission line M covered with ice. At this time, the lower rolling body 4 will press down on the elastic member 5 to change the distance between the upper rolling body 3 and the lower rolling body 4, so as to prevent the inspection device from excessively squeezing the transmission line M and causing internal damage.

[0059] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A power transmission line maintenance device, characterized in that, include: A rolling assembly includes a fixed frame, a driving component, an upper rolling body, a lower rolling body, and an elastic member. The driving component is disposed on the fixed frame and connected to the upper rolling body. The elastic member is disposed on the fixed frame. The lower rolling body is disposed on the elastic member and located below the upper rolling body. A gap is formed between the upper rolling body and the lower rolling body. The driving component is used to drive the upper rolling body to move closer to or further away from the lower rolling body, so as to change the distance between the upper rolling body and the lower rolling body, and to clamp or release the power transmission line passing between the upper rolling body and the lower rolling body. An auxiliary component includes two stabilizing rings disposed opposite each other on the fixed frame, so that when the transmission line is clamped between the upper rolling element and the lower rolling element, the two stabilizing rings are simultaneously engaged. The maintenance mechanism, which is located on the fixed frame, is used to inspect and maintain the power transmission line held between the upper rolling element and the lower rolling element.

2. The power transmission line maintenance device according to claim 1, characterized in that, The fixed frame includes a top frame and a bottom frame, and two side frames. The two ends of the top frame are connected to the top ends of the two side frames, and the two ends of the bottom frame are connected to the bottom ends of the two side frames. The driving component is fixed to the top frame. The upper rolling element and the lower rolling element are both located between the top frame and the bottom frame. The elastic member is located on the bottom frame.

3. The power transmission line maintenance device according to claim 2, characterized in that, The driving component includes a servo motor, the output shaft of which is connected to a threaded rod, and the top frame is provided with a through hole for the threaded rod to pass through. A fixed cylinder is connected to the upper rolling element. The fixed cylinder has an internal thread and is threaded to the threaded rod. When the servo motor starts and drives the threaded rod to rotate, the fixed cylinder moves along the threaded rod and drives the upper rolling element to move in a direction closer to or away from the lower rolling element, so as to adjust the distance between the upper rolling element and the lower rolling element.

4. The power transmission line maintenance device according to claim 3, characterized in that, The upper rolling element includes an upper support and an upper roller rotatably mounted on the upper support. The fixed cylinder is fixed to the upper support. The upper support is provided with an auxiliary plate extending axially along the upper roller. The fixed frame is provided with an auxiliary groove extending along the movement direction of the upper rolling element. The auxiliary plate is disposed in the auxiliary groove so that when the upper rolling element moves in a direction close to or away from the lower rolling element, the auxiliary plate moves along the auxiliary groove.

5. The power transmission line maintenance device according to claim 4, characterized in that, The lower rolling element includes a lower support and a lower roller rotatably mounted on the lower support. The axis of the lower roller is parallel to the axis of the upper roller. The power transmission line is perpendicular to the axes of the upper roller and the lower roller.

6. The power transmission line maintenance device according to claim 2, characterized in that, The elastic component includes a stabilizing cylinder, a spring, and a fixing block. The stabilizing cylinder is fixed to the bottom frame, the spring is disposed inside the stabilizing cylinder, one end of the spring is fixed to the bottom of the stabilizing cylinder, and the other end of the spring extends out of the stabilizing cylinder and is connected to the fixing block; the lower rolling element is disposed on the fixing block.

7. The power transmission line maintenance device according to claim 2, characterized in that, An X-ray flaw detector is provided on the side of the bottom frame facing the top frame, and the X-ray flaw detector is used to inspect the power transmission line.

8. The power transmission line maintenance device according to claim 2, characterized in that, The two side frames of the fixed frame are respectively provided with notches in the middle. Both stabilizing rings are open circular rings and are respectively disposed on the notches of the two side frames. The center line connecting the two stabilizing rings passes between the upper rolling element and the lower rolling element.

9. The power transmission line maintenance device according to claim 8, characterized in that, The stabilizing ring is provided with a baffle, which is an arc with the same curvature as the stabilizing ring and can extend from one end of the opening of the stabilizing ring to block the opening; the baffle is provided with a protrusion.

10. The power transmission line maintenance device according to claim 8, characterized in that, The inner wall of the stabilizing ring is provided with a wrapping brush, which is used to wrap the transmission line passing through the stabilizing ring; and / or The power transmission line maintenance device also includes a U-shaped handle, the two ends of which are connected to the top and bottom edges of the fixed frame, respectively.

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