An electric power cross arm
By designing an angle plate and slider structure for the power crossarm, the problems of bending deformation and inconvenient positioning caused by insulator installation in traditional crossarms are solved, realizing adjustable and fixed insulator positions and enhanced stability of the crossarm.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- STATE GRID FUJIAN ELECTRIC POWER CO LTD
- Filing Date
- 2023-11-09
- Publication Date
- 2026-07-21
Smart Images

Figure CN117489184B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power equipment technology, specifically to a power crossarm. Background Technology
[0002] Crossarms are an important component of transmission line towers, used to install insulators and fittings, support conductors, and maintain a safe distance between them. Since crossarms are mostly installed at high altitudes, traditional crossarms often encounter some problems.
[0003] 1. To avoid mutual interference between wires on the insulator, the insulator is usually installed at both ends of the crossarm, making the crossarm bear the weight at both ends, which can easily cause the crossarm to bend and deform.
[0004] 2. Traditional insulators are not easy to adjust laterally after installation, which limits their use. Summary of the Invention
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this invention provides a power crossarm, primarily to solve the problems of insulators typically being installed at both ends of the crossarm to avoid mutual interference between wires on the insulators, which causes the crossarm to bend and deform due to the weight distribution at both ends. Furthermore, traditional insulators are not easily laterally adjusted after installation, thus limiting their usability.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, the present invention provides the following technical solution:
[0009] An electric crossarm includes a first angle plate and a second angle plate. Multiple sliding grooves are formed on the top of both the first and second angle plates. A second slider is slidably connected within each sliding groove. An insulator body is located on the top of the second slider. A limiting groove is formed on the outer circumference of the second slider, near its bottom. Multiple limiting frames are provided on one inner wall of both the first and second angle plates, engaging with the limiting grooves. Two mounting holes are provided on one side of each limiting frame for fixed installation with either the first or second angle plate. Engaging components are provided on both sides of the second slider to fix its lateral position. Multiple tensioning components are provided between the first and second angle plates to clamp and fix them to the line pole. Supporting components are provided at the bottom of the first and second angle plates for auxiliary fixation. Two arc-shaped spring plates are fixedly connected to opposite sides of both the first and second angle plates.
[0010] Furthermore, the engaging assembly includes multiple slots, which are evenly distributed on the inner walls of both sides of the slide groove one. Both sides of the slider two are provided with clearance slots. A connecting shaft is fixedly connected between the inner walls of the clearance slots. A rotating frame that can engage with the slots is rotatably connected to the outer circumference of the connecting shaft. Both sides of the rotating frame are fixedly connected with torsion springs, and the other end of the torsion springs is fixed to the connecting shaft.
[0011] Based on the aforementioned scheme, each of the rotating frames is fixedly connected to a tie rod at its top, and the tie rod is in a vertical position when the rotating frame is engaged with the slot.
[0012] As a further embodiment of the present invention, the tensioning assembly includes multiple fixed discs, all of which are fixedly connected to the top outer wall of the second corner plate. A semi-threaded rod is fixedly connected to the top of each fixed disc. The top of the first corner plate has multiple sliding grooves, each corresponding to the position of the fixed disc. A slider is slidably connected within the sliding grooves. A connecting post is fixedly connected to the top of the slider. A tensioning plate is sleeved on one side of the connecting post. A plurality of grooves that can engage with the semi-threaded rod are provided on one side of the tensioning plate. A power component is provided on one side of the slider to tension the first and second corner plates.
[0013] Furthermore, the power component is a second threaded hole, which is located on one side of the first slider. The second threaded hole is internally threaded with a tension screw, and the end of the tension screw is in contact with the first angle plate.
[0014] Based on the aforementioned scheme, one side of each of the multiple semi-threaded rods is threaded with a flange nut that compresses the tensioning plate, and the top of each of the multiple connecting columns is provided with a threaded hole, and a clamping nut that limits the tensioning plate is threaded into the threaded hole.
[0015] As a further embodiment of the present invention, the support assembly includes multiple connecting plates one and multiple connecting plates two. The multiple connecting plates one and connecting plates two are rotatably connected to the two ends of corner plate one and corner plate two in an opposing manner. The bottom ends of the multiple adjacent connecting plates one and connecting plates two are rotatably connected to clamps one and clamps two, and two connecting holes are opened at both ends of the clamps one and clamps two.
[0016] Furthermore, the first clamp is located above the second clamp.
[0017] (III) Beneficial Effects
[0018] Compared with the prior art, the present invention provides an electric crossarm with the following advantages:
[0019] 1. This invention involves mounting angle plates one and two on a line pole, then clamping angle plates one and two onto the line pole using a tensioning assembly. Simultaneously, the arc-shaped spring plates on angle plates one and two generate a reaction force when they contact and press against the line pole, thereby further improving the fixing effect of angle plates one and two onto the line pole. Then, a locking assembly is used to lock and fix the adjusted insulator body, and a support assembly is used to provide auxiliary support and fixation to the ends of angle plates one and two, thereby effectively improving the stability of angle plates one and two during use.
[0020] 2. The present invention can adaptively adjust the tensioning distance of the tensioning component according to the thickness of the line pole. During installation, the tensioning plate is engaged with the semi-threaded rod through one of the grooves. Then, by rotating the tensioning screw, the tensioning screw is pressed against the first corner plate and drives the first slider to move outward along the second slide groove. Thus, the tensioning plate tightens and fixes the first and second corner plates through the semi-threaded rod.
[0021] 3. In this invention, the rotating frame is driven to rotate by the pull rod, thereby causing the rotating frame to disengage from the slot and flip into the recess. At the same time, the torsion spring is deformed by force and generates torque, thereby putting the second slider into an adjustable state. Then, the second slider and the insulator body are moved to the appropriate position along the first slide groove. The torsion spring rebounds and resets, causing the rotating frame to rotate in the opposite direction and reset, and re-engage with one of the slots. This adjusts and fixes the position of the second slider and the insulator body. Meanwhile, the limiting frame further limits and fixes the second slider through the limiting groove.
[0022] 4. The present invention clamps and fixes the line pole by connecting holes and fixing bolts, thereby providing auxiliary support and fixing to both ends of the crossarm, thus avoiding bending and deformation of the two ends of the angle plate 1 and angle plate 2 under load. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the front three-dimensional structure of an electric crossarm proposed in this invention;
[0024] Figure 2 This is a schematic diagram of the rear three-dimensional structure of an electric crossarm proposed in this invention;
[0025] Figure 3 This is an enlarged structural schematic diagram of a tensioning assembly for an electric crossarm proposed in this invention;
[0026] Figure 4 This is an exploded structural diagram of a tensioning assembly for an electric crossarm proposed in this invention;
[0027] Figure 5 This is a partially enlarged structural schematic diagram of an electric crossarm proposed in this invention;
[0028] Figure 6 This is a schematic diagram of the two-section structure of the slider of the power crossarm proposed in this invention.
[0029] In the diagram: 1. Angle plate one; 2. Connecting plate one; 3. Connecting plate two; 4. Clamp one; 5. Clamp two; 6. Connecting hole; 7. Angle plate two; 8. Arc-shaped spring plate; 9. Insulator body; 10. Tensioning assembly; 11. Slide groove one; 12. Slide groove two; 13. Flange nut; 14. Groove; 15. Tensioning plate; 16. Compression nut; 17. Threaded hole one; 18. Slider one; 19. Tensioning screw; 20. Threaded hole two; 21. Connecting column; 22. Fixing plate; 23. Semi-threaded rod; 24. Slider two; 25. Limiting frame; 26. Limiting groove; 27. Rotating frame; 28. Mounting hole; 29. Slot; 30. Pull rod; 31. Torsion spring; 32. Connecting shaft; 33. Alternating groove. Detailed Implementation
[0030] 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.
[0031] Reference Figures 1-6An electric crossarm includes a first angle plate 1 and a second angle plate 7. Multiple sliding grooves 11 are provided on the top of both the first angle plate 1 and the second angle plate 7. A second slider 24 is slidably connected within each sliding groove 11. An insulator body 9 is provided on the top of the second slider 24. A limiting groove 26 is provided on the outer circumference of the second slider 24 near its bottom. Multiple limiting frames 25 are provided on one inner wall of both the first angle plate 1 and the second angle plate 7, which engage with the limiting grooves 26. Two mounting holes 28 are provided on one side of each limiting frame 25 for fixed installation on either the first angle plate 1 or the second angle plate 7. Engaging components are provided on both sides of the second slider 24 to fix its lateral position. Multiple tensioning components 10 are provided between the first angle plate 1 and the second angle plate 7 to clamp and fix it to the line pole. Supports are provided at the bottom of the first angle plate 1 and the second angle plate 7 for auxiliary fixation. The components, angle plate 1 and angle plate 2, each have two arc-shaped spring plates 8 welded to opposite sides. Angle plate 1 and angle plate 2 are mounted on the line pole, and then the tensioning assembly 10 clamps them onto the line pole. Simultaneously, the arc-shaped spring plates 8 on angle plate 1 and angle plate 2 generate a reaction force when they contact and press against the line pole, further improving the fixing effect of angle plate 1 and angle plate 2 on the line pole. Then, by releasing the locking assembly, the position of the insulator body 9 on the slider 24 is adjusted, and the adjusted insulator body 9 is locked in place by the locking assembly. Finally, the support assembly provides auxiliary support and fixation to the ends of angle plate 1 and angle plate 2, effectively improving the stability of angle plate 1 and angle plate 2 during use.
[0032] In this invention, the engaging assembly includes multiple slots 29, which are evenly distributed on the inner walls of both sides of the sliding groove 11. The sliding block 24 has clearance grooves 33 on both sides. A connecting shaft 32 is bolted between the inner walls of the clearance grooves 33. A rotating frame 27, which engages with the slots 29, is rotatably connected to the outer circumference of the connecting shaft 32. Torsion springs 31 are bolted to both sides of the rotating frame 27, with the other end of each torsion spring 31 fixed to the connecting shaft 32. By pulling the rotating frame 27, disengaging it from the slots 29 and causing it to flip into the clearance grooves 33, the torsion springs 31 deform under stress and generate torque, thereby... Slider 24 is in an adjustable state. Then, slide slider 24 and insulator body 9 are moved to a suitable position along slide groove 11. Torsion spring 31 rebounds and resets, causing rotating frame 27 to rotate in the opposite direction and reset, and re-engage with one of the slots 29. This adjusts and fixes the position of slider 24 and insulator body 9. At the same time, limiting frame 25 further limits and fixes slider 24 through limiting groove 26. The top of multiple rotating frames 27 is fixed with pull rod 30 by bolts. When rotating frame 27 is engaged with slot 29, pull rod 30 is in a vertical position. By pulling pull rod 30 outward, pull rod 30 drives rotating frame 27 to rotate.
[0033] In this invention, the tensioning assembly 10 includes multiple fixing discs 22, all of which are bolted to the top outer wall of the second angle plate 7. A semi-threaded rod 23 is welded to the top of each fixing disc 22. The top of the first angle plate 1 has multiple sliding grooves 12 corresponding to the positions of the fixing discs 22. A slider 18 is slidably connected within each sliding groove 12. A connecting post 21 is bolted to the top of the slider 18. A tensioning plate 15 is sleeved on one side of the connecting post 21. Multiple grooves 14 that can engage with the semi-threaded rod 23 are provided on one side of the tensioning plate 15. A power component is provided on one side of the slider 18 to tighten the first angle plate 1 and the second angle plate 7. This allows for adaptive adjustment of the tensioning distance of the tensioning assembly 10 according to the thickness of the line pole. During installation, the tensioning plate 15 is engaged with the semi-threaded rod 23 through one of the grooves 14. The tensioning plate 15 is used to tighten and fix the angle plate 1 and the angle plate 7 via a power component. The power component is a threaded hole 20, which is located on one side of the slider 18. A tensioning screw 19 is threaded into the threaded hole 20, and the end of the tensioning screw 19 contacts the angle plate 1. By rotating the tensioning screw 19, the tensioning screw 19 is pressed against the angle plate 1 and drives the slider 18 to move outward along the slide groove 12. This causes the tensioning plate 15 to tighten and fix the angle plate 1 and the angle plate 7 via the semi-threaded rod 23. Each side of the semi-threaded rod 23 is threaded with a flange nut 13 that presses against the tensioning plate 15. The top of each of the connecting columns 21 is provided with a threaded hole 17, and a clamping nut 16 that limits the tensioning plate 15 is threaded into the threaded hole 17, thereby clamping and fixing the tensioning plate 15.
[0034] In this invention, the support assembly includes multiple connecting plates 1 and 2 and multiple connecting plates 3. The multiple connecting plates 1 and 2 are rotatably connected to the two ends of corner plate 1 and corner plate 2 in an opposing manner. The bottom ends of the multiple adjacent connecting plates 1 and 2 are respectively rotatably connected to clamps 1 and 2 5. Two connecting holes 6 are opened at both ends of the two clamps 1 and 2 5. The clamp 1 is located above the clamp 2 5. By clamping and fixing the line pole through the connecting holes 6 and fixing bolts, the two ends of the crossarm are provided with auxiliary support and fixation, thereby avoiding bending and deformation of the two ends of corner plate 1 and corner plate 2 7 under load.
[0035] The working principle of this embodiment is as follows: During use, angle plates 1 and 7 are mounted on the line pole. The tensioning distance of the tensioning assembly 10 can be adaptively adjusted according to the thickness of the line pole. During installation, the tensioning plate 15 is engaged with the semi-threaded rod 23 through one of the grooves 14. Then, by rotating the tensioning screw 19, angle plate 1 is pressed against the tensioning plate, causing the slider 18 to move outward along the sliding groove 22. This allows the tensioning plate 15 to tighten and fix angle plates 1 and 7 through the semi-threaded rod 23. Simultaneously, the arc-shaped spring plates 8 on angle plates 1 and 7 generate a reaction force when they contact and press against the line pole, further improving the fixing effect between angle plates 1 and 7 and the line pole. Then, pulling the pull rod 30 outward causes the rotating frame 27 to rotate, thus engaging the groove 22 with the tensioning plate. 9 disengages from the engaged state and flips into the recess 33. At the same time, the torsion spring 31 deforms under force and generates torque, thereby putting the second slider 24 into an adjustable state. Then, the second slider 24 and the insulator body 9 are moved to the appropriate position along the first slide groove 11. The torsion spring 31 rebounds and resets, causing the rotating frame 27 to rotate in the opposite direction and reset, and re-engage with one of the slots 29, thereby adjusting and fixing the position of the second slider 24 and the insulator body 9. At the same time, the limiting frame 25 further limits and fixes the second slider 24 through the limiting groove 26. Then, by clamping and fixing the line pole with the two clamps 1 and 2 through the connecting hole 6 and the fixing bolt, the two ends of the crossarm are provided with auxiliary support and fixation, thereby preventing the bending and deformation of the two ends of the angle plate 1 and the second angle plate 7 under the load, thus effectively improving the stability of the angle plate 1 and the second angle plate 7 during use.
[0036] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.
[0037] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An electric crossarm, comprising a first corner plate (1) and a second corner plate (7), characterized in that, Both the first corner plate (1) and the second corner plate (7) have multiple sliding grooves (11) at their tops. A second slider (24) is slidably connected in the first sliding groove (11). The top of the second slider (24) is provided with an insulator body (9). A limiting groove (26) is provided on the outer circumference of the second slider (24) near its bottom. Both the first corner plate (1) and the second corner plate (7) have multiple limiting frames (25) on one side of their inner walls that engage with the limiting grooves (26). The limiting frames (25) have two mounting holes (28) on one side that are fixedly installed on the first corner plate (1) or the second corner plate (7). The slider 2 (24) is provided with locking components on both sides to fix its lateral position. Multiple tensioning components (10) are provided between the angle plate 1 (1) and the angle plate 2 (7) to clamp and fix it to the line pole. Supporting components are provided at the bottom of the angle plate 1 (1) and the angle plate 2 (7) to assist in fixing them. Two arc-shaped spring plates (8) are fixedly connected to the opposite side of the angle plate 1 (1) and the angle plate 2 (7). The tensioning component (10) includes multiple fixing discs (22). The multiple fixing discs (22) are fixedly connected to the top outer wall of the angle plate 2 (7). 2) The top of the angle plate (1) is fixedly connected to a semi-threaded rod (23). The top of the angle plate (1) is provided with multiple sliding grooves (12) that correspond to the positions of the fixed plate (22). A slider (18) is slidably connected in the sliding grooves (12). A connecting post (21) is fixedly connected to the top of the slider (18). A tensioning plate (15) is sleeved on one side of the connecting post (21). A groove (14) is provided on one side of the tensioning plate (15) that can engage with the semi-threaded rod (23). A side of the slider (18) is provided to make the tensioning plate (15) tighten the angle plate (1) and the angle plate (7). The power component is a threaded hole two (20), which is opened on one side of the slider one (18). The threaded hole two (20) is internally threaded with a tension screw (19), and the end of the tension screw (19) is in contact with the angle plate one (1). One side of each of the multiple semi-threaded rods (23) is threaded with a flange nut (13) to compress the tension plate (15). The top of each of the multiple connecting columns (21) is provided with a threaded hole one (17), and the threaded hole one (17) is internally threaded with a clamping nut (16) to limit the tension plate (15).
2. The power crossarm according to claim 1, characterized in that, The engaging assembly includes multiple slots (29), which are evenly distributed on the inner walls of both sides of the slide groove one (11). Both sides of the slider two (24) are provided with clearance slots (33). A connecting shaft (32) is fixedly connected between the inner walls of the two sides of the clearance slots (33). A rotating frame (27) that can engage with the slots (29) is rotatably connected to the outer circumference of the connecting shaft (32). Both sides of the rotating frame (27) are fixedly connected with torsion springs (31), and the other end of the torsion springs (31) is fixed to the connecting shaft (32).
3. The power crossarm according to claim 2, characterized in that, Each of the rotating frames (27) is fixedly connected to a pull rod (30) at its top. The pull rod (30) is in a vertical position when the rotating frame (27) is engaged with the slot (29).
4. The power crossarm according to claim 1, characterized in that, The support assembly includes multiple connecting plates one (2) and multiple connecting plates two (3). The multiple connecting plates one (2) and connecting plates two (3) are rotatably connected to the two ends of corner plate one (1) and corner plate two (7) in an opposing manner. The bottom ends of the multiple adjacent connecting plates one (2) and connecting plates two (3) are respectively rotatably connected to clamp one (4) and clamp two (5). Two connecting holes (6) are opened at both ends of the two clamps one (4) and clamp two (5).
5. The power crossarm according to claim 4, characterized in that, The first clamp (4) is located above the second clamp (5).