A power pylon iron accessory

Abstract

The application belongs to the technical field of power equipment and relates to a power tower iron accessory. The application comprises a support frame, a cross arm, elastic sheets, a driving assembly and wire clamping assemblies. First sliding blocks are rotationally connected to the ends of the support frame, and each first sliding block is slidingly connected to a sliding rail plate. Second sliding blocks are rotationally connected to the ends of the cross arm, and the second sliding blocks are limitingly and slidingly connected to corresponding sliding rail plates. The wire clamping assemblies are arranged in multiple and sequentially arranged below the elastic sheets. The elastic sheets are arranged below the cross arm and can be bent and deformed. The space reference is established by adjusting the states of the sliding rail plates and the cross arm, so that the curved shape of the elastic sheets is matched with the ideal transition curve of the cable. Furthermore, the five wire clamping assemblies are distributed along the arc line matched with the required bending path of the cable, the bending stress amplitude of the cable is reduced, the cable damage caused by stress concentration is effectively prevented, and the long-term operation safety and reliability of the power transmission line are improved.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology and relates to a steel accessory for power transmission towers. Background Technology

[0002] In power transmission line engineering, cables need to pass through clamps on the crossarms on both sides of the tower when crossing power towers. When the line path makes a horizontal turn, the cable will form a spatial curve within the span between adjacent towers. Traditionally, the cable is supported by fixed installations or clamp assemblies with only single-node adjustment functions. The bending shape of the cable is determined by its own tension and the geometric parameters of the span. Multiple support points often cannot naturally form a smooth arc that matches the theoretical stress curve of the cable, easily resulting in an excessively small bending radius at a certain support point, causing the cable to bear excessive bending stress at that point. Under long-term operation, this can cause conductor fatigue, strand breakage, and accelerated insulation aging, seriously threatening transmission safety and line life.

[0003] To address the aforementioned problems, this invention proposes an iron accessory for power transmission towers. Summary of the Invention

[0004] To address the problems existing in the background art, the present invention proposes an iron accessory for power transmission towers.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An accessory for power transmission towers, comprising:

[0007] The support frame has a first slider rotatably connected to both ends, and each first slider is slidably connected to a slide rail plate;

[0008] The crossbeam has a second slider rotatably connected to both ends, and the second slider is slidably connected to the corresponding slide rail plate for limiting.

[0009] An elastic sheet is disposed below the crossarm;

[0010] A drive assembly is mounted on the crossarm, and the elastic sheet bends and deforms under the push of the drive assembly;

[0011] A wire clamping assembly is disposed below the elastic sheet;

[0012] In this process, by adjusting the direction and position of the slide rail plate, the position of the crossarm, and the bending shape of the elastic sheet, multiple cable clamping assemblies are distributed along an arc that matches the required bending path of the cable.

[0013] Furthermore, the elastic sheet slides through the two rotating columns, which are respectively rotatably installed at both ends of the crossarm, and the lower end of the rotating column is connected to the wire clamping assembly.

[0014] Furthermore, a first calibration rod is provided on the slide rail plate, a second calibration rod is provided on the crossarm, a third calibration rod is installed on the rotating column, and a calibration strip that cooperates with the third calibration rod is installed on the slide rail plate; the second calibration rod and the first calibration rod are used in conjunction.

[0015] Furthermore, the drive assembly includes a sliding plate that is slidably connected to the crossarm; a connecting post that cooperates with the elastic sheet is mounted on the sliding plate; and the lower end of the connecting post is connected to a corresponding wire clamping assembly.

[0016] Furthermore, the drive assembly is provided in three parts, which are spaced apart along the length of the crossarm. The drive assembly located in the middle is provided with two connecting posts on both sides of the elastic sheet.

[0017] Furthermore, a threaded rod for driving the sliding plate to slide is rotatably mounted on the crossarm.

[0018] Furthermore, the first slider is fixedly connected to a shaft that is rotatably connected to the support frame. One end of the shaft extends to the upper end of the support frame and is fixedly connected to a mounting plate, on which an aiming device is mounted.

[0019] Furthermore, the crossarm is fixedly connected to a guide rail, and the sliding plate is slidably connected to the guide rail for limiting.

[0020] Furthermore, the cable clamping assembly includes an insulating rod and a clamp, the insulating rod being disposed below the elastic sheet; the clamp is mounted below the insulating rod for clamping the cable.

[0021] Compared with existing technologies, the present invention has the following advantages: By adjusting the state of the slide rail plate and crossarm, a spatial reference is established, so that the arc shape of the elastic sheet bends matches the ideal transition curve of the cable. This, in turn, allows the five clamping assemblies to be distributed along an arc that matches the required bending path of the cable, reducing the bending stress amplitude of the cable, effectively preventing cable damage caused by stress concentration, and improving the long-term safety and reliability of the transmission line. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the first support frame in this invention;

[0024] Figure 3 This is a schematic diagram of the slide rail plate in this invention;

[0025] Figure 4This is a schematic diagram of the wire clamping assembly in this invention;

[0026] Figure 5 This is a schematic diagram showing the positions of the calibration strip and the third calibration rod in this invention;

[0027] Figure 6 This is a schematic diagram of the crossarm structure in this invention;

[0028] Figure 7 This is a schematic diagram of the structure of the elastic sheet in the present invention when it is in a flat state;

[0029] Figure 8 This is a schematic diagram of the interaction between the elastic sheet and the connecting post when the elastic sheet is in a flat state in this invention;

[0030] Figure 9 This is a schematic diagram of the structure of the second support frame in this invention;

[0031] Figure 10 This is a top view of the slide rail plate and crossarm in the initial stage of this invention;

[0032] Figure 11 This is a bottom view of the slide rail plate and crossbeam in the initial stage of this invention;

[0033] Figure 12 This is a simplified diagram of the initial state of the first support frame in this invention;

[0034] Figure 13 This is a simplified diagram of the state when the slide rail plate on the first support frame is adjusted.

[0035] Figure 14 This is a simplified diagram of the state when the position adjustment of the slide rail plate on the first support frame in this invention is completed;

[0036] Figure 15 This is a simplified diagram of the state of the crossbeam on the first support frame when the adjustment is completed in this invention;

[0037] Figure 16 This is a simplified diagram of the state of the elastic sheet on the first support frame when it has completed bending in this invention;

[0038] Figure 17 This is a simplified diagram showing the state after all the wire clamping components on the first support frame in this invention have been adjusted.

[0039] Figure 18 This is a simplified diagram showing the state of the cable when it is installed on the first support frame in this invention;

[0040] Figure 19 This is a simplified diagram of the initial state of the second support frame in this invention;

[0041] Figure 20This is a simplified diagram of the state when the slide rail plate on the second support frame is adjusted.

[0042] Figure 21 This is a simplified diagram showing the state of the slide rail plate on the second support frame after the position adjustment is completed in this invention;

[0043] Figure 22 This is a simplified diagram of the state of the crossbeam on the second support frame when the adjustment is completed in this invention;

[0044] Figure 23 This is a simplified diagram of the state of the elastic sheet on the second support frame when it has completed bending in this invention;

[0045] Figure 24 This is a simplified diagram showing the state after all the wire clamping components on the second support frame in this invention have been adjusted.

[0046] Figure 25 This is a simplified diagram of the state when the cable is installed on the second support frame in this invention.

[0047] In the diagram: 1. Power transmission tower; 2. Support frame; 201. First support frame; 202. Second support frame; 3. Mounting plate; 4. Aiming device; 5. First bolt; 6. First slider; 7. Second bolt; 8. Slide rail plate; 9. First calibration rod; 10. Crossarm; 11. Second calibration rod; 12. Second slider; 13. Third bolt; 14. Calibration strip; 15. Third calibration rod; 16. Rotating column; 17. Elastic sheet; 18. Motor; 19. Threaded rod; 20. Guide rail; 21. Sliding plate; 22. Connecting column; 23. Insulating rod; 24. Wire clamp. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Example 1: As Figures 1-25 As shown, the technical solution adopted by the present invention is as follows: an accessory for power transmission towers includes a support frame 2, a slide rail plate 8, a crossarm 10, an elastic sheet 17, a drive assembly, and multiple wire clamping assemblies.

[0050] The support frame 2 is fixedly installed on the power tower 1 by bolts. The support frame 2 can be U-shaped, C-shaped, or other frame structures that can provide a stable installation foundation. In this embodiment, the support frame 2 is U-shaped. Both ends of the support frame 2 are rotatably connected to a first slider 6.

[0051] Specifically, the first slider 6 forms a rotating joint with the support frame 2 via a shaft. One end of the first slider 6 is fixedly connected to the shaft. The other end of the shaft extends upward through the support frame 2 and is fixedly connected to a mounting plate 3. An aiming device 4 is detachably mounted on the mounting plate 3. Rotating the first slider 6 synchronously rotates the shaft, mounting plate 3, and aiming device 4 together. The aiming device 4 is preferably a long-range optical aiming device with crosshairs, used for accurately aligning with predetermined cable fixing points on adjacent power towers 1.

[0052] The mounting plate 3 is threaded with a first bolt 5. By tightening the first bolt 5, the mounting plate 3 is fixed relative to the support frame 2.

[0053] Each first slider 6 is slidably connected to a slide rail plate 8. The slide rail plate 8 has a first groove along its length, and the first slider 6 slides in conjunction with the first groove, so that the slide rail plate 8 can slide linearly relative to the first slider 6.

[0054] The first slider 6 is threaded with a second bolt 7. By tightening the second bolt 7, the first slider 6 and the slide rail plate 8 are fixed.

[0055] Each slide rail plate 8 is fixedly connected to a first alignment rod 9. The end of the first alignment rod 9 furthest from the corresponding slide rail plate 8 is arc-shaped. When adjusting the position of the slide rail plate 8, first rotate the slide rail plate 8 and align it with the predetermined cable fixing point on the adjacent power tower 1 using the aiming device 4, so that the slide rail plate 8 and the predetermined cable fixing point on the adjacent power tower 1 are on the same straight line. Then tighten the first bolt 5 to fix the mounting plate 3 to the support frame 2. Then move the slide rail plate 8 so that it slides along the first slider 6 until the axis of the arc at the ends of the two first alignment rods 9 coincides. After that, tighten the second bolt 7 to fix the slide rail plate 8 and the first slider 6.

[0056] In the vertical plane, the two first calibration rods 9 should be staggered vertically to avoid mutual interference when adjusting the slide rail plate 8, and to ensure that the arc-shaped axes of the ends of the two first calibration rods 9 can coincide.

[0057] The crossarm 10 is positioned between two slide rail plates 8. Specifically, a second slide groove is provided on the slide rail plate 8, and a second slider 12 is slidably positioned within the second slide groove. The second slider 12 is rotatably connected to the crossarm 10.

[0058] A second alignment rod 11 is fixedly connected to the middle of the crossarm 10, and the second alignment rod 11 is set perpendicular to the crossarm 10.

[0059] After the slide rail plate 8 is adjusted, adjust the position of the crossarm 10 so that the second slider 12 moves along the second slide groove and the second calibration rod 11 moves closer to the first calibration rod 9 until the axis of the two first calibration rods 9 falls on the second calibration rod 11.

[0060] The second slider 12 is threaded with a third bolt 13. After the position of the crossarm 10 is adjusted, tighten the third bolt 13 to fix the second slider 12 onto the slide rail plate 8, thereby fixing the position of the crossarm 10 relative to the slide rail plate 8.

[0061] like Figure 7 As shown, the elastic sheet 17 is located below the crossarm 10. Both ends of the crossarm 10 are rotatably connected to rotating columns 16, and the elastic sheet 17 slides through the two rotating columns 16.

[0062] like Figure 4 , Figure 5 As shown, a third calibration rod 15 is fixedly connected to one of the rotating columns 16. A calibration strip 14 is fitted onto the third calibration rod 15 and fixed to the bottom of the slide rail plate 8 on the same side. When the elastic sheet 17 bends and deforms, the elastic sheet 17 slides along the rotating column 16. At the same time, due to the bending of the elastic sheet 17, the rotating column 16 rotates relative to the crossbeam 10. The rotating column 16 drives the third calibration rod 15 to move until the third calibration rod 15 and the calibration strip 14 coincide, that is, the third calibration rod 15 and the calibration strip 14 are in the same vertical plane, and the bending and deformation of the elastic sheet 17 is completed.

[0063] The drive assembly is mounted on the crossarm 10. The drive assembly includes a sliding plate 21. A guide rail 20 is fixedly mounted on the crossarm 10, and the sliding plate 21 is slidably connected to the guide rail 20. A threaded rod 19 is threadedly connected to the sliding plate 21, and the threaded rod 19 is rotatably connected to the crossarm 10. The threaded rod 19 can be rotated by hand, or a motor 18 can be mounted on the crossarm 10 to drive the threaded rod 19. The motor 18 is protected by an insulating sleeve. A connecting post 22 that mates with an elastic plate 17 is mounted on the sliding plate 21.

[0064] Specifically, multiple driver components can be configured. For example... Figure 6 , Figure 7As shown, in this embodiment, three drive assemblies are spaced apart along the length of the crossarm 10. The middle drive assembly has two connecting posts 22 connected to its sliding plate 21. These two connecting posts 22 are located on either side of the elastic sheet 17 and are fixedly connected to the center of the elastic sheet 17. For example, the elastic sheet 17 can be clamped and fixed using the two connecting posts 22, or it can be fixed to the connecting posts 22 by welding. Each of the sliding plates 21 of the two drive assemblies on either side has one connecting post 22, and the connecting posts 22 on the two drive assemblies are in contact with the elastic sheet 17 or have a small gap. The connecting posts 22 on the two drive assemblies and the sliding plates 21 are located on the same side of the elastic sheet 17.

[0065] Multiple wire clamping assemblies are provided and sequentially arranged below the elastic sheet 17. Each wire clamping assembly includes an insulating rod 23 and a wire clamp 24. In this embodiment, five wire clamping assemblies are provided, with the upper ends of the insulating rods 23 at both ends fixedly connected to the bottom of two rotating columns 16, respectively. The upper ends of the remaining three insulating rods 23 are fixedly connected to three sliding plates 21, respectively. The wire clamp 24 is rotatably connected to the bottom end of the insulating rod 23 for clamping and fixing the cable.

[0066] In use, the elastic sheet 17 is bent and deformed by the drive component in the middle, and then the sliding plates 21 on both sides are moved toward the elastic sheet 17, so that the five clamping components are distributed along the bent and deformed elastic sheet 17.

[0067] like Figure 1 As shown, a power tower 1 is equipped with two support frames 2. For ease of description, the two support frames 2 are named the first support frame 201 and the second support frame 202, respectively.

[0068] In the first support frame 201, the drive assembly is located on the side of the crossarm 10 closer to the first support frame 201, and the second alignment rod 11 is located on the side of the crossarm 10 away from the first support frame 201. The elastic sheet 17 on the first support frame 201 bends and deforms towards the side away from the first support frame 201.

[0069] On the second support frame 202, the drive assembly is located on the side of the crossarm 10 away from the second support frame 202, and the second alignment rod 11 is located on the side of the crossarm 10 closer to the second support frame 202. On the second support frame 202, the elastic sheet 17 bends and deforms towards the side away from the second support frame 202.

[0070] When the cable is pre-deformed to bend to the left, the first support frame 201 is installed on the left side of the power tower 1, and the second support frame 202 is installed on the right side of the power tower 1, as follows. Figure 1 As shown.

[0071] When the cable is pre-deformed to bend to the right, the first support frame 201 is installed on the right side of the power tower 1, and the second support frame 202 is installed on the left side of the power tower 1.

[0072] Working principle: Initially, the aiming device 4 and the slide rail 8 are on the same vertical plane, and the slide rail 8 and the crossarm 10 are on the same straight line. For example... Figure 7 , Figure 8 As shown, the elastic sheet 17 is in a straight state, and the axis of the elastic sheet 17 and the corresponding insulating rod 23 are on the same vertical plane.

[0073] In use, the support frame 2 is installed onto the power tower 1 according to the preset bending direction of the cable. Assuming the cable is preset to bend to the left, then... Figure 1 As shown, the first support frame 201 is installed on the left side of the power tower 1, and the second support frame 202 is installed on the right side of the power tower 1.

[0074] The cable installation process will be illustrated using the structure on the first support frame 201 on the left as an example. Please refer to [link / reference]. Figures 12 to 18 , Figure 12 This is the initial state of the first support frame 201.

[0075] First, adjust the position of the slide rail plate 8 and loosen the first bolt 5 so that the mounting plate 3 can rotate the first slider 6 relative to the support frame 2. The operator then places their eye close to an aiming device 4 and manually rotates the corresponding slide rail plate 8 slowly. The slide rail plate 8, through the first slider 6, causes the mounting plate 3 and the aiming device 4 to rotate together. Using the crosshairs on the aiming device 4, the operator precisely aligns the slide rail plate 8 with the reference point on the corresponding side of the adjacent power tower 1, which is intended for cable fixing. When the center of the crosshairs coincides with the reference point, it is considered that the direction of the slide rail plate 8 is consistent with the theoretical route of the cable leading to the adjacent power tower 1 on the same side as the slide rail plate 8. At this point, tighten the first bolt 5 on that side to lock the mounting plate 3 and the first slider 6 into the first support frame 201.

[0076] Similarly, perform the same operation on the other slide rail plate 8 on the first support frame 201, and then tighten the corresponding first bolt 5. At this point, as... Figure 13 The state shown.

[0077] After the two slide rail plates 8 on the first support frame 201 are adjusted, loosen the two second bolts 7 so that the two slide rail plates 8 can slide along their corresponding first sliders 6. Slowly push the two slide rail plates 8 and observe the first calibration rods 9. When the two slide rail plates 8 are pushed until the axes of the arcs at the ends of the two first calibration rods 9 coincide, stop pushing the slide rail plates 8. At this time, as shown... Figure 14 As shown in the diagram. Then, tighten the two second bolts 7 to lock the slide rail plate 8 to the first slider 6.

[0078] Next, loosen the two third bolts 13, allowing the second sliders 12 at both ends of the crossarm 10 to slide along the second grooves on the slide rail plate 8. Push the crossarm 10 to move, and the second alignment rod 11 will move along with it. Observe the relative position of the second alignment rod 11 and the two first alignment rods 9. When the second alignment rod 11 just passes through the coincident axis of the arc at the ends of the two first alignment rods 9, stop moving. At this point, as... Figure 15 As shown in the diagram. Tighten the two third bolts 13 to lock the second slider 12 onto the slide rail plate 8.

[0079] By manually rotating the central threaded rod 19 or starting the motor 18 in the middle of the crossbeam 10, the central threaded rod 19 rotates, causing the sliding plate 21 to move away from the first support frame 201. The sliding plate 21 pushes the middle part of the elastic plate 17 away from the first support frame 201. Due to the constraint of the rotating column 16, the elastic plate 17 undergoes bending deformation. The deformation of the elastic plate 17 exhibits a symmetrical bending with its middle part as the vertex. During the bending process, the elastic plate 17 slides relative to the two rotating columns 16, simultaneously causing the two rotating columns 16 to rotate.

[0080] The third calibration rod 15 rotates along with the rotating column 16. The third calibration rod 15 represents the tangential direction of the elastic plate 17 at the rotating column 16. The operator observes the third calibration rod 15 and the calibration strip 14 fixed to the bottom surface of the slide rail plate 8 on the same side. When the third calibration rod 15 rotates to coincide with the calibration strip 14, they are on the same vertical plane. Figure 16 In the indicated state, the middle motor 18 is turned off. At this time, the tangent direction of the bending arc formed by the elastic sheet 17 at the two rotating columns 16 is consistent with the direction of the two slide rail plates 8, which means that the bending arc of the elastic sheet 17 matches the transition curve required for the cable to cross the power tower 1.

[0081] Start the two motors 18 located on both sides of the crossarm 10. Each motor 18 drives its corresponding sliding plate 21 to move along the guide rail 20 towards the elastic plate 17. Continue until the corresponding connecting post 22 contacts the side of the bent elastic plate 17, or moves to a predetermined small gap, then shut off the motors 18 on both sides. At this point, the upper ends of all five insulating rods 23 are positioned on the bending arc defined by the elastic plate 17, and the five wire clamping assemblies are distributed along an arc matching the required bending path of the cable, as shown below. Figure 17 As shown in the diagram. This allows for a smoother transition when the cable is installed onto multiple clamps 24, which helps reduce the bending stress amplitude of the cable, effectively prevents cable damage caused by stress concentration, and improves the long-term safety and reliability of the transmission line.

[0082] Next, insert the cable into each of the five clamps 24 in sequence and tighten the clamps 24, as follows. Figure 18As shown in the diagram. The cable is bent along the elastic sheet 17.

[0083] Similarly, such as Figures 19-25 As shown, adjust the slide rail plate 8 on the second support frame 202 so that the direction of the slide rail plate 8 is consistent with the theoretical direction of the cable leading to the adjacent power tower 1 on the same side of the slide rail plate 8. Then, tighten the first bolt 5 to lock the mounting plate 3 and the first slider 6 onto the second support frame 202, as shown. Figure 20 As shown.

[0084] Then, slide the slide rail 8 along the first slider 6, so that the arc-shaped axes at the ends of the two first calibration rods 9 coincide, as shown. Figure 21 As shown.

[0085] Subsequently, the crossarm 10 is moved so that the second alignment rod 11 passes through the arc-shaped axis between the ends of the two first alignment rods 9, as shown. Figure 22 As shown.

[0086] Activate the central drive assembly to fully deform the elastic plate 17 towards the second support frame 202 until the third alignment rod 15 coincides with the alignment strip 14. The tangents of the elastic plate 17 at the two rotating columns 16 then align with the directions of the two slide rail plates 8. Figure 23 As shown.

[0087] Activate the drive assemblies on both sides, causing the corresponding connecting posts 22 to contact the elastic sheet 17 or leave a small gap. Multiple insulating rods 23 are distributed along the elastic sheet 17, as shown below. Figure 24 As shown.

[0088] Then the corresponding cables are installed on the five wire clamps 24 on the second support frame 202, such as... Figure 25 As shown, the cable bends along the elastic sheet 17.

[0089] It should be noted that after the aiming device 4 is used up, it can be removed from the mounting plate 3 and reused.

[0090] Example 2: To enhance the fixing effect, after tightening the first bolt 5, a hole is drilled on the top surface of the mounting plate 3, penetrating the mounting plate 3 and drilling a hole of a certain depth in the support frame 2. Then, an expansion bolt is passed through the through hole in the mounting plate 3 and the hole in the support frame 2, completely fixing the mounting plate 3 and the support frame 2 with the expansion bolt. Similarly, after tightening the second bolt 7, a hole is drilled on the side of the first slider 6, penetrating one side of the first slider 6 and drilling a hole of a certain depth in the slide rail plate 8. Then, an expansion bolt is passed through the through hole in the first slider 6 and the hole in the slide rail plate 8, completely fixing the slide rail plate 8 and the first slider 6 with the expansion bolt. After tightening the third bolt 13, the second slider 12 is fixed to the slide rail plate 8. Then, a tool is used to drill a hole on the side of the second slider 12, penetrating one side of the second slider 12 and drilling to a certain depth into the slide rail plate 8. Expansion bolts are then passed through the through hole in the second slider 12 and the hole in the slide rail plate 8, completely fixing the second slider 12 and the slide rail plate 8 together. Of course, the fixing between the mounting plate 3 and the support frame 2, the fixing between the slide rail plate 8 and the first slider 6, and the fixing between the second slider 12 and the slide rail plate 8 can also be achieved by welding or other methods.

[0091] Example 3: In another embodiment, in order to adapt to different installation environments or simplify the structure, the first calibration rod 9, the second calibration rod 11, the third calibration rod 15, and the calibration strip 14 can be replaced with a laser aligner or other vision or electronic positioning devices. Their function is also to provide a clear reference benchmark for each adjustment step. They are all equivalent substitutions of the technical concept of this invention.

[0092] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A type of iron accessory for power transmission towers, characterized in that, include: The support frame (2) has a first slider (6) rotatably connected to both ends, and each first slider (6) is slidably connected to a slide rail plate (8). The crossbeam (10) has a second slider (12) rotatably connected to both ends, and the second slider (12) is limited and slidably connected to the corresponding slide rail plate (8); An elastic sheet (17) is disposed below the crossarm (10); A drive assembly is mounted on the crossarm (10), and the elastic sheet (17) bends and deforms under the push of the drive assembly; A wire clamping assembly is disposed below the elastic sheet (17); In this process, by adjusting the direction and position of the slide rail plate (8), the position of the crossarm (10), and the bending shape of the elastic sheet (17), the multiple clamping assemblies are distributed along an arc that matches the required bending path of the cable.

2. The iron accessory for power transmission towers according to claim 1, characterized in that: The elastic sheet (17) slides through the two rotating columns (16), which are respectively rotatably installed at both ends of the crossarm (10), and the lower end of the rotating column (16) is connected to the clamping assembly.

3. A steel accessory for power transmission towers according to claim 2, characterized in that: The slide rail plate (8) is provided with a first calibration rod (9), the crossbeam (10) is provided with a second calibration rod (11), the rotating column (16) is installed with a third calibration rod (15), and the slide rail plate (8) is installed with a calibration strip (14) that works in conjunction with the third calibration rod (15); the second calibration rod (11) and the first calibration rod (9) work together.

4. The iron accessory for power transmission towers according to claim 1, characterized in that: The drive assembly includes a sliding plate (21) which is slidably connected to the crossarm (10); a connecting post (22) that cooperates with the elastic sheet (17) is installed on the sliding plate (21); the lower end of the connecting post (22) is connected to a corresponding clamping assembly.

5. A steel accessory for power transmission towers according to claim 4, characterized in that: The drive assembly is provided in three parts, which are spaced apart along the length of the crossarm (10). The drive assembly located in the middle is provided with two connecting posts (22) on both sides of the elastic sheet (17).

6. A steel accessory for power transmission towers according to claim 4, characterized in that: A threaded rod (19) for driving the sliding plate (21) to slide is rotatably mounted on the crossarm (10).

7. A steel accessory for power transmission towers according to claim 1, characterized in that: The first slider (6) is fixedly connected to a shaft that is rotatably connected to the support frame (2). One end of the shaft extends to the upper end of the support frame (2) and is fixedly connected to a mounting plate (3). A sight (4) is mounted on the mounting plate (3).

8. A steel accessory for power transmission towers according to claim 4, characterized in that: The crossarm (10) is fixedly connected to a guide rail (20), and the sliding plate (21) is limited and slidably connected to the guide rail (20).

9. A steel accessory for power transmission towers according to claim 1, characterized in that: The cable clamping assembly includes an insulating rod (23) and a clamp (24). The insulating rod (23) is disposed below the elastic sheet (17). The clamp (24) is installed below the insulating rod (23) for clamping the cable.

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