Extra-high voltage tension string tower head uniform force connecting device
By adopting a coordinated design of uniform force connecting rod components and connecting hardware in the tower head connection device of ultra-high voltage transmission lines, the problem of insufficient self-adaptive capability of traditional connection devices is solved, realizing three-dimensional spatial adaptive adjustment and dynamic load sharing, improving mechanical safety and fatigue life, and reducing the risks of high-altitude operations and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAISE BUREAU OF EHV TRANSMISSION CO OF CHINA SOUTHERN POWER GRID CO LTD
- Filing Date
- 2025-12-22
- Publication Date
- 2026-04-24
AI Technical Summary
Existing UHV transmission line tower head connection devices suffer from excessive rigidity, insufficient self-adaptability, and inability to effectively compensate for the deviation between the conductor tension direction and the tower head mounting hole axis, leading to stress concentration and structural hazards. Furthermore, the materials lack durability, resulting in low construction efficiency, poor adaptability, and high risks associated with high-altitude operations.
The system employs a collaborative design of two sets of uniform force connecting rod assemblies and connecting hardware to achieve three-dimensional adaptive adjustment. The uniform force connecting rod assemblies automatically compensate for force angle deviations, forming a parallel redundant force transmission system to share the load. Alloy steel or titanium alloy materials are used and surface treated to improve the durability and corrosion resistance of the materials.
It has significantly improved the mechanical safety and fatigue life of the connection points, reduced the difficulty and risk of high-altitude operations, improved construction and maintenance efficiency, extended the service life of the equipment, and reduced operation and maintenance costs.
Smart Images
Figure CN121923024A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of equipment technology for construction and maintenance of ultra-high voltage transmission lines, and more specifically, to a uniform force connection device for ultra-high voltage tension string tower heads. Background Technology
[0002] With the large-scale construction and upgrading of my country's ultra-high voltage (UHV) power transmission network, the voltage level, transmission capacity, and crossing distance of transmission lines are constantly increasing, placing unprecedentedly high demands on the mechanical safety and operational reliability of the lines. As the core load-bearing structure of the transmission line, the tension tower plays a crucial role in balancing conductor tension and anchoring insulator strings; its safety is the cornerstone of the stable operation of the entire line. The tower head, as the "throat" connecting conductor hardware, insulator strings, various construction traction equipment, and the tower itself, directly determines the efficiency of tension transmission, the safety of construction and maintenance, and the durability of long-term service through the design and performance of its connection structure.
[0003] Currently, the connection at the tower head end generally relies on traditional high-strength steel or alloy steel fitting systems. These systems typically employ bolt fastening, single-pin hinges, or rigid connecting plates, connecting to external equipment at pre-drilled construction holes in the tower body. However, they suffer from the following drawbacks: First, the structure is too rigid and lacks adaptability. Traditional fittings are mostly designed with fixed angles or only have a single degree of freedom, failing to effectively compensate for the inevitable deviation between the conductor tension direction and the axis of the tower head mounting hole during construction. This angular deviation causes eccentric loads at the connection points, leading to abnormal stress concentration. Under long-term operation, fatigue cracks are prone to develop in critical areas such as the pin and hole wall, creating structural hazards. Second, the force transmission path is concentrated, resulting in high operational risks. In operations such as insulator replacement, traditional single-point or simple two-point connection methods are difficult to distribute the load evenly, leading to prominent local overload phenomena. Especially at the moment of load application and release, the sudden change in the force flow path can cause impacts, easily leading to instantaneous damage to the fittings (such as pin shearing or connecting plate tearing), posing a direct safety threat to high-altitude operations. Third, the equipment is bulky and has poor adaptability, resulting in low construction efficiency. Steel-framed structures are large and heavy, making high-altitude installation and dismantling extremely difficult, requiring multiple people and auxiliary equipment, which is time-consuming and labor-intensive. Furthermore, their low standardization makes them difficult to adapt to the mounting holes of different tower types, often requiring on-site non-standard modifications, increasing project complexity, cost, and secondary safety risks. Fourth, the material's environmental durability is insufficient, resulting in high life-cycle costs. Ordinary steel is easily corroded in harsh environments such as humidity and salt spray, leading to weakened effective cross-sections, strength loss, and accelerated wear, significantly reducing fatigue life. To ensure safety, frequent maintenance and replacement are required, resulting in high operation and maintenance costs.
[0004] Existing improvements, such as using double pins and adding shims, have failed to fundamentally solve the problem of force balance and adaptive adjustment in three-dimensional space. Therefore, there is an urgent need for a tower head connection device that can achieve automatic force equalization, is lightweight, easy to install, and highly adaptable. Summary of the Invention
[0005] In view of this, the purpose of the present invention is to provide a uniform force connection device for ultra-high voltage tension tower heads, which aims to solve the problems existing in the prior art.
[0006] According to the present invention, a uniform force connection device for ultra-high voltage tension string tower head is provided for connecting between the tower head side and the conductor side, comprising a connecting fitting and two sets of uniform force connection rod assemblies connected to the connecting fitting. The uniform force connecting rod assembly includes a connecting rod, a first U-shaped connector, and a second U-shaped connector; the closed ends of the two first U-shaped connectors are respectively rotatably connected to both sides of the open end of the second U-shaped connector via a first rotating shaft, and the closed end of the second U-shaped connector is rotatably connected to the first end of the connecting rod via a second rotating shaft; The first U-shaped connector has a first connection hole at its open end for connection to the tower head side; the second end of the connecting rod is connected to the connecting hardware via a connecting component or directly, and the connecting hardware is used for connection to the conductor side. The axis of the first connecting hole is perpendicular to the axis of the first rotating shaft.
[0007] Preferably, the first connecting hole is configured as a pin hole, and a tower mounting base is provided on the tower head side, and the first connecting hole of each first U-shaped connector is connected to the tower mounting base by a pin. A traction plate for fixing the conductor is provided on the conductor side, and the connecting hardware is used to connect to the traction plate.
[0008] Preferably, the connecting hardware has a triangular plate-shaped structure, and the two sets of uniform force connecting rod assemblies are rotatably connected to the two bottom corners of the connecting hardware. The connecting hardware has a traction plate connecting pin hole on the top corner away from the two sets of uniform force connecting rod assemblies for connecting with the traction plate.
[0009] Preferably, a traction plate connecting groove is provided on the top corner of the connecting hardware away from the two sets of uniform force connecting rod assemblies, and the traction plate connecting pin hole penetrates the side wall of the traction plate connecting groove.
[0010] Preferably, the connecting fitting has recessed structures on its three sides.
[0011] Preferably, a wear-resistant bushing is provided in the connecting pin hole of the traction plate.
[0012] Preferably, the connecting hardware and the uniform force connecting rod assembly are made of alloy steel or titanium alloy.
[0013] Preferably, the surfaces of the connecting fittings and the uniform force connecting rod assembly are nickel-plated or anodized.
[0014] Preferably, a connecting seat is fixed at the first end of the connecting rod, a U-shaped groove is provided on the connecting seat, a second rotating shaft fixing hole is provided through the side wall of the U-shaped groove, the second rotating shaft passes through the second rotating shaft fixing hole and is detachably connected to the connecting seat, and a second rotating shaft hole is provided at the closed end of the second U-shaped connector, the second U-shaped connector is rotatably connected to the second rotating shaft through the second rotating shaft hole; The second U-shaped connector has mounting grooves on its two side plates, and the through direction of the mounting grooves is perpendicular to the axis of the second rotating shaft hole. A first rotating shaft fixing hole is provided through the side wall of the mounting groove. The first rotating shaft passes through the first rotating shaft fixing hole and is detachably connected to the side plate of the second U-shaped connector. The closed end of the first U-shaped connector has a first rotating shaft hole, and the first U-shaped connector is rotatably connected to the first rotating shaft through the first rotating shaft hole.
[0015] Preferably, the second end of the connecting rod is connected to a traction device, and the connecting rod is connected to the connecting hardware via the traction device.
[0016] The ultra-high voltage tension tower head uniform force connection device provided by this invention, through the coordinated design of two sets of uniform force connection rod assemblies and connecting hardware, enables the device to have three-dimensional spatial adaptive adjustment capability, automatically compensate for force angle deviation, achieve dynamic load equalization, completely eliminate off-center loading and stress concentration, and greatly improve the mechanical safety and fatigue life of the connection point. The two sets of uniform force connection rod assemblies form a parallel redundant force transmission system, collaboratively sharing the load and providing multiple safety backups. Even if local components malfunction, the overall structure remains stable and reliable. In addition, the device uses pin or rotating shaft connections, has a high degree of modularity and strong versatility, can be quickly adapted to different tower types, greatly simplifies the high-altitude installation and dismantling process, reduces operational difficulty and safety risks, and improves construction and maintenance efficiency. Attached Figure Description
[0017] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings.
[0018] Figure 1 A three-dimensional structural schematic diagram of the uniform force connection device for ultra-high voltage tension tower heads according to an embodiment of the present invention is shown.
[0019] Figure 2A three-dimensional structural schematic diagram of the uniform force connecting rod in the uniform force connecting device for ultra-high voltage tension tower head according to an embodiment of the present invention is shown.
[0020] Figure 3 A three-dimensional structural schematic diagram of the connecting fittings in the uniform force connection device for ultra-high voltage tension tower head according to an embodiment of the present invention is shown.
[0021] In the diagram: 1. Connecting hardware; 11. Traction plate connecting pin hole; 12. Traction plate connecting groove; 13. Concave structure; 14. Second connecting hole; 2. Uniform force connecting rod assembly; 21. Connecting rod; 211. Connecting seat; 2111. U-shaped groove; 2112. Second rotating shaft fixing hole; 212. Reinforcing rib plate; 213. Connecting ear plate; 22. Second U-shaped connector; 221. Mounting groove; 222. First rotating shaft fixing hole; 23. First U-shaped connector; 231. First connecting hole; 24. First rotating shaft; 25. Second rotating shaft; 3. Traction equipment. Detailed Implementation
[0022] Various embodiments of the invention will now be described in more detail with reference to the accompanying drawings. In the various drawings, the same elements are indicated by the same or similar reference numerals. For clarity, the various parts in the drawings are not drawn to scale.
[0023] This invention provides a uniform force connection device for the tower head of an ultra-high voltage tension string, used for connecting between the tower head side and the conductor side. See also... Figure 1 and Figure 2 The ultra-high voltage tension string tower head uniform force connection device includes a connecting hardware 1 and two sets of uniform force connecting rod assemblies 2 connected to the connecting hardware 1. The uniform force connecting rod assembly 2 includes a connecting rod 21, a first U-shaped connector 23, and a second U-shaped connector 22. The closed ends of the two first U-shaped connectors 23 are rotatably connected to the two sides of the open end of the second U-shaped connector 22 through a first rotating shaft 24, and the closed end of the second U-shaped connector 22 is rotatably connected to the first end of the connecting rod 21 through a second rotating shaft 25. The open end of the first U-shaped connector 23 is provided with a first connecting hole 231 for connecting to the tower head side. The second end of the connecting rod 21 is connected to the connecting hardware 1 through a connecting component or directly, and the connecting hardware 1 is used to connect to the conductor side. The axis of the first connecting hole 231 is perpendicular to the axis of the first rotating shaft 24.
[0024] The first connecting hole 231 is configured as a pin hole, and a tower mounting base is provided on the tower head side. The first connecting hole 231 of each of the first U-shaped connectors 23 is connected to the tower mounting base by a pin. A traction plate for fixing the conductor is provided on the conductor side, and the connecting hardware 1 is used to connect to the traction plate. Two sets of uniform force connecting rod assemblies 2 are connected in parallel to the same connecting hardware 1. In use, the huge tension from the conductor is simultaneously and evenly distributed to the two sets of uniform force connecting rod assemblies 2 through the traction plate and the connecting hardware 1, and then transmitted to the tower. Any instantaneous overload or impact at any single point will be redistributed, greatly improving the overall reliability of the device. Even if one set of uniform force connecting rod assemblies 2 malfunctions, the other set can still provide an effective force transmission path, preventing instantaneous device failure. In the uniform force connecting rod assembly 2, two first U-shaped connectors 23 are connected to the two sides of the open end of the second U-shaped connector 22 through a first rotating shaft 24. The second U-shaped connector 22 is connected to the connecting rod 21 through a second rotating shaft 25, and forms a series double-axis hinge structure with the connecting rod 21. The axis of the first connecting hole 231 of the first U-shaped connector 23 is perpendicular to the axis of the first rotating shaft 24. The first U-shaped connector 23 can swing left and right around the axis of the first connecting hole 231, and the second U-shaped connector 22 can swing up and down around the first rotating shaft 24. This gives the entire device a multi-degree-of-freedom adjustment capability in three-dimensional space. When there is a spatial angular deviation between the conductor tension direction and the tower mounting base, the device can automatically adjust its posture by rotating through the combination of the first rotating shaft 24 and the pin in the first connecting hole 231, thus automatically aligning the force transmission path. This fundamentally avoids the eccentric load, stress concentration, and unilateral wear or shear failure of the pin caused by angular deviation in traditional rigid connections. It transforms the originally harmful eccentric load into an adjustable internal force within the system, significantly improving the safety margin and fatigue life of the connection point. The device connects to the tower via a standard pin, achieving "plug and play." The combination of the two sets of uniform force connecting rod assemblies 2 and the connecting hardware 1 can adapt to a wider load range and more tower head structure forms. Compared to the problem of traditional hardware having "one design per tower" and poor adaptability, this device reduces non-standard operations such as on-site processing and grinding, making high-altitude installation and disassembly faster and simpler, reducing reliance on operator experience, and fundamentally reducing the time and risk of high-altitude operations.
[0025] See Figure 3The connecting hardware 1 has a triangular plate-like structure. Two sets of uniform force connecting rod assemblies 2 are rotatably connected to the two base corners of the connecting hardware 1. A traction plate connecting pin hole 11 for connecting to the traction plate is provided on the apex corner of the connecting hardware 1 away from the two sets of uniform force connecting rod assemblies 2. Specifically, a second connecting hole 14 is provided at each of the two base corners of the connecting hardware 1. A pin can be inserted into the second connecting hole 14, thereby detachably connecting to the uniform force connecting rod assembly 2 via the pin. Preferably, the connecting hardware 1 is made into an isosceles triangular plate-like structure. Designing the connecting hardware 1 as a triangular plate-like structure and connecting the two sets of uniform force connecting rod assemblies 2 to the two base corners, with the traction plate connection point located at the apex corner, naturally forms a stable triangular force transmission closed loop geometrically. The concentrated tensile force from the traction plate, after being transmitted through the apex corner, is automatically and efficiently distributed along the two sides of the triangle to the uniform force connecting rod assemblies 2 at the two base corners, effectively reducing the peak load at a single connection point and achieving secondary uniform force distribution. The triangular structure has geometric self-stability in mechanics. When the device is subjected to asymmetrical loads or has a torsional tendency, the three corners of the triangle constrain each other, which can effectively resist deformation and prevent the connecting hardware 1 from twisting or becoming unstable, thereby ensuring the overall rigidity and reliability of the entire device under multi-directional composite forces.
[0026] Furthermore, a traction plate connecting groove 12 is provided on the top corner of the connecting fitting 1 away from the two sets of uniform force connecting rod assemblies 2, and the traction plate connecting pin hole 11 penetrates the side wall of the traction plate connecting groove 12. By providing a traction plate connecting groove 12 on the connecting fitting 1, the connection between the traction plate and the connecting fitting 1 is facilitated. When the traction plate is connected to the connecting fitting 1, the connecting end of the traction plate can be inserted into the traction plate connecting groove 12 on the connecting fitting 1, and then a pin is inserted into the traction plate connecting pin hole 11, passing through the pin hole on the traction plate, to connect the traction plate to the connecting fitting 1.
[0027] Furthermore, recessed structures 13 are provided on the three sides of the connecting fitting 1. For example... Figure 3 As shown, the concave structure includes a central arc segment and straight segments located on both sides of the arc segment and tangent to it. The concave structures 13 on the three sides of the connecting hardware 1 effectively form concave reinforcing ribs, significantly enhancing the bending and deformation resistance of the connecting hardware 1, achieving both lightweight and high rigidity. The concave structure 13, acting as a smooth force flow transition channel, guides the force flow more smoothly along the sides of the triangle, avoiding stress concentration phenomena commonly found at right angles or sharp corners; the uniform stress distribution greatly reduces the risk of fatigue cracks, thereby extending the service life of the connecting hardware 1 under long-term alternating loads.
[0028] Furthermore, a wear-resistant bushing is provided in the connecting pin hole 11 of the traction plate. In specific implementation, the wear-resistant bushing can be made of aluminum bronze. By providing a wear-resistant bushing in the connecting pin hole 11 of the traction plate, the wear-resistant bushing can optimize the friction pair, greatly reduce the wear of the connecting pin hole 11 of the traction plate, and specifically solve the key pain point of easy wear at the connection point under long-term high load; the wear-resistant bushing can maintain the precision fit between the pin shaft and the pin hole for a long time, ensuring that the connection is not loose and the force transmission is always stable and reliable, avoiding the impact and instability caused by the increase of the gap; this design allows for repair by simply replacing the inexpensive wear-resistant bushing after wear, without scrapping the entire connecting hardware 1, realizing low-cost and modular maintenance, and strongly supporting the design goal of long life and maintenance-free operation of the entire device.
[0029] Furthermore, the connecting fitting 1 and the uniform force connecting rod assembly 2 are made of alloy steel or titanium alloy. The surfaces of the connecting fitting 1 and the uniform force connecting rod assembly 2 are treated with nickel plating or anodizing. Using alloy steel or titanium alloy as the main material for the connecting fitting 1 and the uniform force connecting rod 21 provides a fundamental guarantee for the device to withstand the enormous tension of the ultra-high voltage line, ensuring the device maintains structural integrity and has sufficient safety margin even under extreme operating conditions. In particular, titanium alloy has extremely high specific strength compared to traditional ordinary carbon steel. This means that while achieving the same or even higher load-bearing capacity, the weight of titanium alloy components can be significantly reduced, directly translating into a substantial reduction in high-altitude work load, easier installation, and reduced additional stress on the tower head structure due to the reduced weight. For alloy steel, nickel plating forms a dense, chemically stable metallic coating on its surface, acting as a sacrificial barrier to isolate the substrate from corrosive media, providing reliable cathodic protection. For titanium alloys, anodizing can grow a thicker and harder ceramic oxide film in situ on its surface, further sealing surface defects and greatly enhancing its wear resistance and corrosion resistance. In this embodiment, the connecting hardware 1 and the uniform force connecting rod assembly 2 are made of aerospace titanium alloy material (Ti-6Al-4V), which reduces density by 40% and increases yield strength by about 30% compared to traditional steel structures. The connecting hardware 1 is integrally CNC machined from titanium alloy, and its surface is anodized with an oxide film thickness of approximately 15μm; all orifice edges are chamfered to prevent stress concentration. This process ensures that the connecting hardware 1 has a complete surface, high symmetry, and no internal welding defects, resulting in structural strength and durability significantly superior to traditional welded parts.
[0030] See Figure 2The first end of the connecting rod 21 is fixedly provided with a connecting seat 211. A U-shaped groove 2111 is formed on the connecting seat 2111, and a second rotating shaft fixing hole 2112 is provided through the side wall of the U-shaped groove 2111. The second rotating shaft 25 passes through the second rotating shaft fixing hole 2112 and is detachably connected to the connecting seat 211. The closed end of the second U-shaped connector 22 is provided with a second rotating shaft 25 hole, and the second U-shaped connector 22 is rotatably connected to the second rotating shaft 25 through the second rotating shaft 25 hole. Specifically, the connecting seat 211 can be fixedly connected to the first end of the connecting rod 21 by welding. A triangular reinforcing rib plate 212 is also welded between the connecting seat 211 and the connecting rod 21 to ensure a firm connection between them. By providing a connecting seat 211 at the first end of the connecting rod 21, the connection between the second U-shaped connector 22 and the connecting rod 21 is facilitated. The robust "fork-ear" hinge structure provides a stable and reliable rotation fulcrum for force transmission, precisely ensuring the required rotational freedom and motion accuracy of the second U-shaped connector 22.
[0031] Furthermore, mounting grooves 221 are respectively provided on the two side plates of the second U-shaped connector 22, and the through direction of the mounting grooves 221 is perpendicular to the axial direction of the hole of the second rotating shaft 25. A first rotating shaft fixing hole 222 is provided through the side wall of the mounting groove 221. The first rotating shaft 24 passes through the first rotating shaft fixing hole 222 and is detachably connected to the side plate of the second U-shaped connector 22. The closed end of the first U-shaped connector 23 is provided with a first rotating shaft 24 hole, and the first U-shaped connector 23 is rotatably connected to the first rotating shaft 24 through the first rotating shaft 24 hole. By providing mounting grooves 221 on the two side plates of the second U-shaped connector 22, the closed end of the first U-shaped connector 23 can be embedded in the mounting grooves 221 and connected to the second U-shaped connector 22, which enhances the stability of the hinge point and its resistance to complex loads.
[0032] In this embodiment, the connecting rod 21 has a square columnar structure, and reinforcing ribs can be arranged inside as needed to improve axial bending resistance. The first rotating shaft 24 and the second rotating shaft 25 are made of high-strength stainless steel or tempered alloy steel, and the surface is nitrided to improve hardness. The first rotating shaft 24 and the first rotating shaft fixing hole 222, and the second rotating shaft 25 and the second rotating shaft fixing hole 2112 are all precision fitted (H7 / g6 grade), which ensures both flexible rotation and long-term connection tightness. The "flexible multi-point support" formed by the series connection of multiple rotating shafts can absorb and disperse instantaneous impact forces, making the tower head structure safer and more stable. In order to ensure the absolute safety of the rotating shaft connection under long-term high-load vibration, both ends of the first rotating shaft 24 and the second rotating shaft 25 are equipped with limit rings and double-layer safety pins to ensure that they do not come off under high vibration and high stress environments. Specifically, annular grooves are machined at the ends of the rotating shafts, and an open ring is first installed as the first line of defense to prevent axial movement. Then, a radial hole is drilled at the end of the shaft, and a cylindrical pin or R-pin is inserted as a safety pin. Even if the retaining ring loosens due to vibration, the safety pin ensures that the shaft will not come out, thus forming a "double safety".
[0033] In this embodiment, the second end of the connecting rod 21 is connected to a traction device 3, and the connecting rod 21 is connected to the connecting hardware 1 via the traction device 3. See also... Figure 1 The traction device 3 is a hydraulic screw, and the second end of the connecting rod 21 is provided with a connecting lug 213. The connecting lug 213 is provided with a pin hole. The connecting rod 21 is connected to the first end of the hydraulic screw through a pin shaft, and the second end of the hydraulic screw is connected to the bottom corner position of the connecting hardware 1 through a pin shaft. During conductor traction or tension holding operations, the hydraulic screw is gradually pressurized by starting the hydraulic system, and the uniform force connecting rod assembly 2 automatically adjusts its angle under stress. When the traction direction deviates due to operational needs or tower characteristics, the device will automatically adjust: if there is a horizontal deflection angle, the device can swing left and right around the axis of the first connecting hole 231 on the first U-shaped connector 23; if there is a vertical tilt angle, the device can pitch around the first rotating shaft 24. This adaptive adjustment ensures that no matter how the tension direction changes, the uniform force connecting rod assembly 2 and the connecting hardware 1 can always cooperate and evenly share the load, so that the force acting on the tower mounting base always remains uniform and centered, avoiding the problems of off-center loading, shearing and impact of traditional rigid connections.
[0034] In this ultra-high voltage tension tower head uniform force connection device, the first U-shaped connector 23, the second U-shaped connector 22, the connecting rod 21, and the connecting hardware 1 are all modular assembly structures. If a component is damaged, it can be replaced individually, reducing maintenance costs. At the same time, the dimensions of each component are standardized, facilitating mass production and on-site inventory management. It has strong compatibility and is suitable for various tower types.
[0035] In summary, the UHV tension tower head uniform force connection device provided by this invention, through the coordinated design of two sets of uniform force connection rod assemblies and connecting hardware, enables the device to have three-dimensional spatial adaptive adjustment capability, automatically compensate for force angle deviations, achieve dynamic load equalization, completely eliminate off-center loading and stress concentration, and greatly improve the mechanical safety and fatigue life of the connection point. The two sets of uniform force connection rod assemblies form a parallel redundant force transmission system, collaboratively sharing the load and providing multiple safety backups. Even if local components malfunction, the overall structure remains stable and reliable. In addition, the device uses pin or rotating shaft connections, has a high degree of modularity and strong versatility, can be quickly adapted to different tower types, greatly simplifies the high-altitude installation and dismantling process, reduces operational difficulty and safety risks, and improves construction and maintenance efficiency.
[0036] It should be noted that, in this document, 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A uniform force connection device for the tower head of an ultra-high voltage tension string, used for connecting between the tower head side and the conductor side, characterized in that, It includes connecting hardware and two sets of uniform force connecting rod assemblies connected to the connecting hardware; The uniform force connecting rod assembly includes a connecting rod, a first U-shaped connector, and a second U-shaped connector; the closed ends of the two first U-shaped connectors are respectively rotatably connected to both sides of the open end of the second U-shaped connector via a first rotating shaft, and the closed end of the second U-shaped connector is rotatably connected to the first end of the connecting rod via a second rotating shaft; The first U-shaped connector has a first connection hole at its open end for connection to the tower head side; the second end of the connecting rod is connected to the connecting hardware via a connecting component or directly, and the connecting hardware is used for connection to the conductor side. The axis of the first connecting hole is perpendicular to the axis of the first rotating shaft.
2. The ultra-high voltage tension tower head uniform force connection device according to claim 1, characterized in that, The first connecting hole is configured as a pin hole, and a tower mounting base is provided on the tower head side. The first connecting hole of each first U-shaped connector is connected to the tower mounting base by a pin. A traction plate for fixing the conductor is provided on the conductor side, and the connecting hardware is used to connect to the traction plate.
3. The ultra-high voltage tension tower head uniform force connection device according to claim 2, characterized in that, The connecting hardware has a triangular plate-shaped structure. The two sets of uniform force connecting rod assemblies are rotatably connected to the two bottom corners of the connecting hardware. The top corner of the connecting hardware away from the two sets of uniform force connecting rod assemblies is provided with a traction plate connecting pin hole for connecting with the traction plate.
4. The ultra-high voltage tension tower head uniform force connection device according to claim 3, characterized in that, A traction plate connecting groove is provided on the top corner of the connecting hardware away from the two sets of uniform force connecting rod assemblies, and the traction plate connecting pin hole penetrates the side wall of the traction plate connecting groove.
5. The ultra-high voltage tension tower head uniform force connection device according to claim 3, characterized in that, The connecting hardware has recessed structures on its three sides.
6. The ultra-high voltage tension tower head uniform force connection device according to claim 3, characterized in that, A wear-resistant bushing is provided in the connecting pin hole of the traction plate.
7. The ultra-high voltage tension tower head uniform force connection device according to claim 1, characterized in that, The connecting hardware and the uniform force connecting rod assembly are made of alloy steel or titanium alloy.
8. The ultra-high voltage tension tower head uniform force connection device according to claim 1, characterized in that, The surfaces of the connecting hardware and the uniform force connecting rod assembly are treated with nickel plating or anodizing.
9. The ultra-high voltage tension tower head uniform force connection device according to claim 1, characterized in that, The first end of the connecting rod is fixed with a connecting seat, the connecting seat is provided with a U-shaped groove, a second rotating shaft fixing hole is provided through the side wall of the U-shaped groove, the second rotating shaft passes through the second rotating shaft fixing hole and is detachably connected to the connecting seat, the closed end of the second U-shaped connector is provided with a second rotating shaft hole, and the second U-shaped connector is rotatably connected to the second rotating shaft through the second rotating shaft hole; The second U-shaped connector has mounting grooves on its two side plates, and the through direction of the mounting grooves is perpendicular to the axis of the second rotating shaft hole. A first rotating shaft fixing hole is provided through the side wall of the mounting groove. The first rotating shaft passes through the first rotating shaft fixing hole and is detachably connected to the side plate of the second U-shaped connector. The closed end of the first U-shaped connector has a first rotating shaft hole, and the first U-shaped connector is rotatably connected to the first rotating shaft through the first rotating shaft hole.
10. The ultra-high voltage tension tower head uniform force connection device according to claim 1, characterized in that, The second end of the connecting rod is connected to a traction device, and the connecting rod is connected to the connecting hardware via the traction device.