Bunched aerial insulated cable

Abstract

This invention relates to the field of overhead insulated cable technology and proposes a bundled overhead insulated cable, comprising multiple overhead insulated cable bodies, mounting troughs, arc-shaped cable clamps, and transverse sliding troughs. Mounting troughs are installed on two corresponding overhead power lines, and two longitudinally corresponding flexible slide rails are provided between the two corresponding mounting troughs. Multiple arc-shaped cable clamps are installed on both the mounting troughs and the flexible slide rails. The overhead insulated cable bodies are positioned between the transversely corresponding arc-shaped cable clamps. The transverse sliding troughs are slidably connected between the multiple flexible slide rails, and end connection structures connecting to the outer surface of the overhead insulated cable bodies are provided on both sides of the transverse sliding troughs. This technical solution solves the problem in existing bundled overhead insulated cables where it is inconvenient to bundle multiple overhead insulated cables laid at different times together during use.

Description

Technical Field

[0001] This invention relates to the field of overhead insulated cable technology, and more specifically, to a bundled overhead insulated cable. Background Technology

[0002] Overhead insulated cables are a special long-distance power transmission carrier that combines the convenience of overhead conductor laying with the insulation safety of power cables. Its core structure includes a conductor, an insulation layer, and, depending on the usage environment, a semiconductor shielding layer, an outer semiconducting shielding layer, and a protective layer. The conductor mainly uses hard aluminum wire, hard-drawn copper wire, aluminum alloy wire, or steel-cored aluminum wire. The insulation layer is manufactured using a production process similar to that of cross-linked cables. In existing technologies, overhead insulated cables are commonly used for long-distance power transmission operations. Therefore, overhead insulated cables are generally installed between two power overhead lines to achieve power grid control and transmission operations.

[0003] In actual power grid regulation and power transmission, multiple overhead insulated cables drawn from a single power transmission tower often need to be laid to power transmission towers in multiple different directions. There are also cases where multiple overhead insulated cables are laid to the same power transmission tower. In order to improve the stability of the overhead insulated cables during the overhead laying process and to prevent the cables from swaying, tangling or falling off due to external forces such as wind and icing, the existing technology usually adopts a bundled approach for overhead laying of multiple overhead insulated cables facing the same direction. By concentrating and fixing multiple cables together, the installation stability of multiple overhead insulated cables is effectively improved and the operation and maintenance risks after laying are reduced.

[0004] The advantage of laying existing bundled overhead insulated cables is that multiple areas of the bundled overhead insulated cables are fixed together. However, this method is not convenient for reconnecting new overhead insulated cables to multiple areas of the already bundled overhead insulated cables. Therefore, it is not convenient to bundle multiple overhead insulated cables laid at different times together during the laying process. Summary of the Invention

[0005] This invention proposes a bundled overhead insulated cable, which solves the problem in the prior art that it is inconvenient to bundle together multiple overhead insulated cables laid at different times during use.

[0006] The technical solution of the present invention is as follows: A bundled overhead insulated cable, comprising multiple overhead insulated cable bodies, and further comprising: The mounting racks are provided on the two corresponding power overhead structures, and two longitudinally corresponding flexible slide rails are provided between the two corresponding mounting racks. The arc-shaped cable clamps are provided on both the mounting slot and the flexible slide rail, and the overhead insulated cable body is arranged between the multiple arc-shaped cable clamps corresponding in the lateral position. A transverse sliding trough is slidably connected between multiple flexible slide rails. Both sides of the transverse sliding trough are provided with end connection structures that connect to the outer surface of the overhead insulated cable body. After the end of the overhead insulated cable body being moved is connected to the transverse sliding trough, the overhead insulated cable body is driven to move between multiple arc-shaped cable clamps.

[0007] According to an exemplary embodiment of this disclosure, the flexible slide rail includes rigid rail segments and flexible rail segments, with multiple rigid rail segments and multiple flexible rail segments arranged alternately, and the rigid rail segments and flexible rail segments between two flexible slide rails corresponding to each other.

[0008] According to an exemplary embodiment of this disclosure, sliding protrusions are provided on both the upper and lower sides of the transverse sliding frame, and a matching slide rail is provided on both the rigid rail section and the flexible rail section, with the sliding protrusions slidably disposed within the matching slide rail.

[0009] According to an exemplary embodiment of this disclosure, a through bushing is rotatably connected inside the transverse sliding slot frame, and mounting shafts are rotatably connected to both sides of the through bushing. The two end connection structures are respectively disposed on the two mounting shafts for adjusting the connection orientation of the end connection structures.

[0010] According to an exemplary embodiment of this disclosure, the end connection structure includes an arc-shaped abutment and a binding strap. The arc-shaped abutment is in contact with the surface of the overhead insulated cable body, and a plurality of binding straps are provided on the arc-shaped abutment, with one side of the binding strap penetrating through the arc-shaped abutment.

[0011] According to an exemplary embodiment of this disclosure, the arc-shaped abutment and the arc-shaped cable clamp can form a complete circle, and the arc-shaped abutment intersects with the arc-shaped cable clamp during the movement of the arc-shaped abutment.

[0012] According to an exemplary embodiment of this disclosure, a synchronous pulley is rotatably connected inside the mounting bracket, and a synchronous belt is driven between the two synchronous pulleys. A connecting bracket is provided on the inner top of the transverse sliding bracket, and the connecting bracket is connected to the corresponding area of ​​the synchronous belt.

[0013] The working principle and beneficial effects of this invention are as follows: The present invention discloses a bundled overhead insulated cable. When multiple overhead insulated cable bodies are laid in a bundle between two power overhead structures, two mounting trays are first set on the corresponding power overhead structures. Then, the end connection structure on the transverse moving tray is connected to the end of the overhead insulated cable body to be laid. The transverse moving tray is then moved from the range of the mounting tray on one side to the range of the mounting tray on the other side. At the same time, the overhead insulated cable body is laid between the two mounting trays, which effectively improves the convenience of laying the overhead insulated cable body between the two power overhead structures.

[0014] The bundled overhead insulated cable disclosed in this invention allows the overhead insulated cable body to pass sequentially through the inner sides of multiple arc-shaped cable clamps when moving a new overhead insulated cable body from one side of the mounting trough to the other side. This enables multiple areas on the overhead insulated cable body after laying to be supported and clamped by multiple arc-shaped cable clamps, thereby improving the support and fixation of the subsequently laid overhead insulated cable body. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of a bundled overhead insulated cable disclosed in this invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure in which the mounting tray, flexible slide rail, arc cable clamp, and transverse sliding tray work together; Figure 3 For the present invention Figure 1 A partial cross-sectional structural diagram showing the assembly of the mounting tray, flexible slide rail, arc-shaped cable clamp, and transverse sliding tray. Figure 4 For the present invention Figure 1 A schematic diagram of the planar structure of the overhead insulated cable body, mounting trough, arc-shaped cable clamp, and transverse sliding trough; Figure 5 For the present invention Figure 1 A schematic diagram of the structure of the arc-shaped cable clamp and the arc-shaped abutment seat; Figure 6 For the present invention Figure 1 A schematic diagram of the structure of the through bushing, mounting shaft, arc-shaped abutment seat, and strapping.

[0017] In the diagram: 1. Overhead insulated cable body; 2. Mounting trough frame; 3. Flexible slide rail; 4. Arc-shaped cable clamp; 5. Transverse trough frame; 6. Rigid rail section; 7. Flexible rail section; 8. Sliding protrusion; 9. Matching slide rail; 10. Through bushing; 11. Mounting shaft; 12. Arc-shaped abutment seat; 13. Bundling strap; 14. Synchronous pulley; 15. Synchronous belt; 16. Extension rod; 17. Drive handwheel. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] This embodiment proposes a bundled overhead insulated cable, such as... Figures 1 to 6 As shown, the cable includes multiple overhead insulated cable bodies 1. In the prior art, the overhead insulated cable body 1 includes conductors specifically designed for overhead insulated cables, such as aluminum alloy conductors, aluminum conductors, or steel-cored aluminum conductors. In subsequent processing, an insulation layer is formed on the conductor surface through an extrusion coating process. Because the overhead insulated cable body 1 is exposed to strong sunlight during use, its weather resistance must be ensured. Therefore, the cross-linked polyethylene insulation layer selected within the overhead insulated cable body 1 generally has good heat resistance, effectively improving the insulation performance of the overhead insulated cable body 1 after long-term use. Then, according to actual usage requirements, a semiconductor shielding layer can be formed on the outer surface of the cross-linked polyethylene insulation layer through a wrapping process to improve the stability of power transmission. Multiple conductors coated with cross-linked polyethylene insulation and semiconductor shielding layers are then stranded together through a stranding process to form an overhead insulated cable with complete electrical performance. Finally, an outer sheath is extruded on the outermost side to provide final protection for the multiple conductors. The overhead insulated cable body 1 is then laid between two power overhead lines to maintain the connection of the power grid system.

[0020] It also includes mounting racks 2, with mounting racks 2 installed on each of the two corresponding power overhead cables. According to the transmission path of multiple power overhead cables, mounting racks 2 are installed at corresponding heights on two adjacent power overhead cables. The installation method of the two corresponding mounting racks 2 requires that the port angles of the two mounting racks 2 correspond. Whether the two mounting racks 2 are installed at the same height or at different heights, the ports of the two mounting racks 2 must be parallel to facilitate the layout of the flexible slide rail 3 and to keep the transverse sliding rack 5 parallel to slide.

[0021] Two longitudinally corresponding flexible slide rails 3 are provided between the two corresponding mounting slots 2. The flexible slide rail 3 includes rigid rail sections 6 and flexible rail sections 7. Multiple rigid rail sections 6 and multiple flexible rail sections 7 are staggered, and the rigid rail sections 6 and flexible rail sections 7 between the two flexible slide rails 3 correspond to each other. Because during long-term outdoor installation, the flexible slide rail 3 inevitably mixes with a lot of dust, gravel and other debris in the sliding rail 9. And due to the influence of the climate, the flexible slide rail 3 will inevitably deform during outdoor use. However, by using the flexible slide rail 3, even after slight deformation, it can still ensure that the transverse sliding slot 5 can continue to move. Moreover, the flexible rail section 7 can be bent, which also improves the convenience of transporting the flexible slide rail 3. Because there is a distance of tens or even hundreds of meters between the two power overhead structures, the staggered arrangement between the rigid rail section 6 and the flexible rail section 7 can also ensure that the transverse sliding slot 5 always slides and engages with a rigid rail section 6, which can also ensure the stability of the transverse sliding slot 5. When the two flexible slide rails 3 used in this invention correspond in the longitudinal position, it is necessary to make the multiple rigid rail segments 6 and multiple flexible rail segments 7 corresponding in the longitudinal direction intersect each other. Assuming that a certain area of ​​a flexible slide rail 3 is a rigid rail segment 6, the corresponding area of ​​another flexible slide rail 3 is a flexible rail segment 7, which is used to keep the transverse sliding frame 5 moving normally.

[0022] Both the mounting tray 2 and the flexible slide rail 3 are equipped with multiple arc-shaped cable clamps 4. The overhead insulated cable body 1 is positioned between the multiple arc-shaped cable clamps 4 in corresponding lateral positions. The arc-shaped cable clamps 4 have a large semi-circular arc, which ensures good support and fixation of the overhead insulated cable body 1 regardless of whether the notch of the arc-shaped cable clamp 4 faces upward or downward. Furthermore, when the overhead insulated cable body 1 moves laterally within the multiple arc-shaped cable clamps 4, the arc-shaped cable clamps 4 have good expansion properties, as does the inner arc surface area of ​​the arc-shaped cable clamp 4. Only the dimensions on both sides of the notch of the arc-shaped cable clamp 4 fit the outer diameter of the overhead insulated cable body 1, so the arc-shaped cable... The inner arc surface of the cable has a sufficient area for the overhead insulated cable body 1 to move laterally, so that when the overhead insulated cable body 1 is moved by the lateral moving slot frame 5, the overhead insulated cable body 1 can move smoothly between multiple arc-shaped cable clamps 4. After the overhead insulated cable body 1 is moved to the designated position, the fixing of the end of the overhead insulated cable body 1 is released. Under the influence of gravity, the overhead insulated cable body 1 contacts the corresponding position of the arc-shaped cable clamp 4. The overhead insulated cable body 1 on the upper side fits against the two sides of the notch of the arc-shaped cable clamp 4, while the overhead insulated cable body 1 on the lower side fits against the inner arc surface of the arc-shaped cable clamp 4 on the lower side, thus achieving effective fixing of the overhead insulated cable body 1.

[0023] The transverse sliding frame 5 is slidably connected between multiple flexible slide rails 3. Sliding protrusions 8 are provided on both the upper and lower sides of the transverse sliding frame 5. A matching slide rail 9 is provided on the rigid rail section 6 or the flexible rail section 7. The sliding protrusions 8 are slidably disposed within the matching slide rail 9. In order for the transverse sliding frame to slide between the two flexible slide rails 3, there is a certain gap between the matching slide rails 9 on the rigid rail section 6 and the flexible rail section 7, which facilitates the bending of the area of ​​the flexible rail section 7. Furthermore, because the corresponding flexible rail section 7 and rigid rail section 6 in the upper and lower longitudinal directions are intersected, the sliding protrusions 8 always slide within the matching slide rail 9 during the movement of the transverse sliding frame 5, so that the movement of the transverse sliding frame 5 between the two flexible slide rails 3 remains stable.

[0024] A through-sleeve 10 is rotatably connected inside the transverse trough frame 5. Mounting shafts 11 are rotatably connected to both sides of the through-sleeve 10. Two end connection structures are respectively mounted on the two mounting shafts 11 to adjust the connection orientation of the end connection structures. To allow one end connection structure to connect with the corresponding end of the overhead insulated cable body 1, an extension rod 16 is provided between the arc-shaped abutment seat 12 and the end of the mounting shaft 11 on the same side. The extension rod 16 is perpendicular to the mounting shaft 11, causing both the extension rod 16 and the mounting shaft 11 to rotate along the center end of the through-sleeve 10. The arc-shaped abutment seat 12 is flipped along the center point of the mounting shaft 11 until it contacts the outer surface of the overhead insulated cable body 1. At this time, the extension rod 16 is perpendicular to the overhead insulated cable body 1. To avoid the arc-shaped abutment seat 12 contacting the surface of the completed overhead insulated cable body 1, the extension rod 16 is rotated to an angle parallel to the overhead insulated cable body 1. At this time, the arc-shaped abutment seat 12 will not interfere with the overhead insulated cable body 1.

[0025] Both sides of the transverse trough 5 are provided with end connection structures that connect to the outer surface of the overhead insulated cable body 1. After the end of the overhead insulated cable body 1 is connected to the transverse trough 5, the overhead insulated cable body 1 moves between multiple arc-shaped cable clamps 4. The end connection structure includes an arc-shaped abutment seat 12 and a binding strap 13. The arc-shaped abutment seat 12 is in contact with the surface of the overhead insulated cable body 1. Multiple binding straps 13 are provided on the arc-shaped abutment seat 12. One side of the binding strap 13 passes through the arc-shaped abutment seat 12. After the end of the cable body 1 makes contact, the binding strap 13 is wrapped around the end of the overhead insulated cable body 1 half a turn, and one side of the binding strap 13 passes through the arc-shaped abutment seat 12. The arc-shaped abutment seat 12 is provided with a damping slot in the area through which it is passed, so that the binding strap 13 will not easily move out of the damping slot after passing through the damping slot. After the binding strap 13 passes through the arc-shaped abutment seat 12, the binding strap 13 and the arc-shaped abutment seat 12 are used to fix and clamp the end of the overhead insulated cable body 1 between the binding strap 13 and the inner arc surface of the arc-shaped abutment seat 12.

[0026] The arc-shaped abutment seat 12 and the arc-shaped cable clamp 4 can form a complete circle. During the movement of the arc-shaped abutment seat 12, it intersects with the arc-shaped cable clamp 4. In order to enable the arc-shaped cable clamp 4 to effectively support the overhead insulated cable body 1, and to prevent the arc-shaped abutment seat 12 and the arc-shaped cable clamp 4 from contacting each other during the subsequent lateral movement, the arc-shaped abutment seat 12 and the arc-shaped cable clamp 4 used in this invention are made to form a complete circle during the production process, so that the arc-shaped abutment seat 12 will not contact each other during the lateral movement.

[0027] The mounting tray 2 is rotatably connected to a synchronous pulley 14, and a synchronous belt 15 is installed between the two synchronous pulleys 14 for transmission. A connecting tray is installed on the inner top of the transverse tray 5, and the connecting tray is connected to the corresponding area of ​​the synchronous belt 15. When it is necessary to move the transverse tray 5 between the two flexible slide rails 3, a drive handwheel 17 corresponding to the center point of the synchronous pulley 14 is concentrically installed on one of the synchronous pulleys 14. By rotating the drive handwheel 17, the synchronous belt 15 and the two synchronous pulleys 14 are synchronously transmitted. During the transmission of the synchronous belt 15, the transverse tray 5 is moved, and the arc-shaped abutment seat 12 moves the end of the overhead insulated cable body 1.

[0028] The working principle of this bundled overhead insulated cable: When multiple overhead insulated cable bodies 1 need to be bundled and erected between two power overhead structures, two mounting trays 2 are installed on the corresponding two power overhead structures. Then, two flexible slide rails 3 are installed between the two mounting trays 2 using fasteners. Then, a transverse sliding tray 5 is installed in the matching slide rails 9 on both sides of the longitudinal direction via sliding protrusions 8. Then, one end of an overhead insulated cable body 1 is connected to an arc-shaped abutment seat 12. Then, during the transmission process of the synchronous belt 15, the transverse sliding tray 5 is moved, causing the arc-shaped abutment seat 12 to move the end of the overhead insulated cable body 1, so that the overhead insulated cable body 1 moves between multiple arc-shaped cable clamps 4. Then, the clamps on the overhead insulated cable body 1 are released, so that the overhead insulated cable body 1 is fixed between multiple arc-shaped cable clamps 4.

[0029] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 bundled overhead insulated cable, comprising multiple overhead insulated cable bodies (1), characterized in that, Also includes: The mounting slots (2) are provided on the two corresponding power overhead structures, and two longitudinally corresponding flexible slide rails (3) are provided between the two corresponding mounting slots (2). Arc-shaped cable clamps (4), multiple arc-shaped cable clamps (4) are provided on the mounting slot frame (2) and the flexible slide rail (3), and the overhead insulated cable body (1) is arranged between multiple arc-shaped cable clamps (4) in the corresponding lateral position; A transverse sliding trough (5) is slidably connected between multiple flexible slide rails (3). Both sides of the transverse sliding trough (5) are provided with end connection structures that connect to the outer surface of the overhead insulated cable body (1). After the end of the moved overhead insulated cable body (1) is connected to the transverse sliding trough (5), the overhead insulated cable body (1) is driven to move between multiple arc-shaped cable clamps (4).

2. A bundled overhead insulated cable according to claim 1, characterized in that, The flexible slide rail (3) includes a rigid track segment (6) and a flexible track segment (7). Multiple rigid track segments (6) and multiple flexible track segments (7) are staggered, and the rigid track segments (6) and flexible track segments (7) between two flexible slide rails (3) correspond to each other.

3. A bundled overhead insulated cable according to claim 2, characterized in that, The transverse sliding groove frame (5) is provided with sliding protrusions (8) on both the upper and lower sides, and the rigid rail section (6) or the flexible rail section (7) is provided with a matching slide rail (9), and the sliding protrusions (8) are slidably disposed in the matching slide rail (9).

4. A bundled overhead insulated cable according to claim 3, characterized in that, The transverse sliding slot (5) is rotatably connected to a through bushing (10), and both sides of the through bushing (10) are rotatably connected to mounting shafts (11). The two end connection structures are respectively set on the two mounting shafts (11) for adjusting the connection orientation of the end connection structures.

5. A bundled overhead insulated cable according to claim 4, characterized in that, The end connection structure includes: Arc-shaped abutment seat (12), the arc-shaped abutment seat (12) is in contact with the surface of the overhead insulated cable body (1); A binding strap (13) is provided on the arc-shaped abutment seat (12), and one side of the binding strap (13) passes through the arc-shaped abutment seat (12).

6. A bundled overhead insulated cable according to claim 5, characterized in that, The arc-shaped abutment (12) and the arc-shaped cable clamp (4) can form a complete circle. During the movement of the arc-shaped abutment (12), it intersects with the arc-shaped cable clamp (4).

7. A bundled overhead insulated cable according to claim 6, characterized in that, The mounting slot (2) is rotatably connected to a synchronous wheel (14), and a synchronous belt (15) is provided between the two synchronous wheels (14). A connecting slot is provided on the inner top of the transverse slot (5), and the connecting slot is connected to the corresponding area of ​​the synchronous belt (15).

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