A pay-off ground tackle for graphene copper transmission line

Abstract

The application discloses a pay-off ground wire trolley of a graphene copper power transmission line, which comprises a wheel set composed of a wire wheel and a steel wire rope wheel, and a main frame body for mounting the wheel set, characterized in that the wheel set is symmetrically arranged on both sides of the main frame body, two groups of wheel sets are arranged on each side, the wheel sets on each side are axially arranged at both ends of a balance guard plate, the balance guard plate is connected through a hinge, and the balance guard plate and the wheel sets at both ends thereof can be turned to a symmetric and longitudinally distributed folding storage state under the action of a thrust force; a conductive wheel set is further arranged on the middle part of the balance guard plate and horizontally arranged between the two groups of wheel sets, and one end of the conductive wheel set is connected with a grounding wire. The trolley can not only stably and efficiently perform a pay-off operation, but also can be folded and stored during transportation and storage, thereby being convenient for transportation and storage, and can ground induced electricity and prevent electric arc, thereby improving usability and safety.

Description

Technical Field

[0001] This invention relates to the technical field of specialized equipment in the power transmission and transformation industry, mainly to essential machinery for tension stringing construction of high-voltage overhead transmission lines, specifically a stringing and grounding pulley for graphene copper transmission lines. Background Technology

[0002] Wire-laying pulleys are essential equipment for tension wire-laying construction of high-voltage overhead transmission lines. During tension wire-laying, a suitable pulley is first selected based on the cross-sectional dimensions and weight of the conductor being laid, as well as the distance and elevation difference between the towers within the construction section. Then, according to the turning angle between towers, 1-2 pulleys are suspended on each tower. A traction machine pulls the guide rope, which in turn pulls the traction rope connected to the conductor via a guide plate, thus allowing the conductor to pass sequentially through each pulley, completing the laying of the conductor on each tower within the construction section. Therefore, the wire-laying pulley provides support and a laying path for the conductor, playing a crucial role in protecting the conductor and improving the efficiency of the laying construction.

[0003] Currently widely used traditional wire-laying pulleys can be classified into single-wheel, three-wheel, five-wheel, seven-wheel, and nine-wheel wire-laying pulleys according to the number of pulleys, which can respectively meet the needs of laying single conductors, double-split conductors, four-split conductors, six-split conductors, and eight-split conductors in one operation. For wire-laying pulleys with more than one wheel, such as three-wheel and five-wheel pulleys, the middle pulley is a wire rope pulley used to pass through the guide rope and traction rope, and the pulleys arranged symmetrically on both sides are conductor pulleys used to pass through the conductor. For single-wheel wire-laying pulleys, the guide rope, traction rope, and conductor all pass through this single wheel. The pulley is suspended on the transmission tower or directly on the insulator string.

[0004] If the cable-laying pulley has five or more wheels, it is large in size and occupies a large area, making it difficult to transport, store, and manage. Furthermore, when transporting high-voltage cables, the friction between the conductor and the pulley as it passes over the pulley can induce a current in the conductor. Construction workers who carelessly touch the conductor may be struck by this strong induced current and fall from the tower, posing a life-threatening risk. In addition, excessive induced current can generate electric arcs, which can easily burn electrical equipment, causing property damage and even loss of life. How to effectively and completely remove the generated induced current is a current industry challenge. Summary of the Invention

[0005] To address the shortcomings of the existing technology, the inventors have developed an improved wire-laying trolley that not only enables stable and efficient wire-laying operations but also allows for easy folding and storage during transportation and storage. Furthermore, it can ground the induced electricity to prevent arcing, thus improving usability and safety.

[0006] Specifically, the present invention is implemented as follows: a grounding trolley for graphene copper transmission lines includes wheel sets composed of conductor wheels and wire rope wheels, and a main frame for mounting the wheel sets. The wheel sets are symmetrically distributed on both sides of the main frame, with two sets of wheel sets on each side. Each wheel set on each side is axially mounted at both ends of a balance guard plate. The balance guard plate is hinged, allowing the balance guard plate and the wheel sets at both ends to flip into a symmetrical and longitudinally distributed folded storage state under thrust. A conductive wheel set is also provided in the middle of the balance guard plate, transversely positioned between the two sets of wheel sets, with one end of the conductive wheel set connected to the grounding conductor. The grounding conductor includes an outer insulating sheath and a composite core inside the insulating sheath. The composite core is made of several graphene wires and several copper wires interlaced.

[0007] Furthermore, the composite core of the grounding conductor consists of a graphene wire and a copper wire that are alternately staggered and distributed around the periphery of the central core.

[0008] Furthermore, the hinge assembly includes: the middle part of the balance guard plate is hinged to the lower end of the cable tie beam and the outer end of the support rod, the inner end of the support rod is connected to the middle part of the main frame, and the upper end of the cable tie beam is connected to the upper fixing lug of the main frame; the balance guard plate can drive the two sets of wheel sets to rotate in a self-balancing manner at the hinge point.

[0009] Furthermore, the inclined beam and support rod are provided with at least one pin hole, and the limiting pin can be inserted into the pin hole to limit the rotation range of the balance guard plate.

[0010] Furthermore, a metal chain is attached to the end of the limit pin, and the metal chains of all the limit pins on each side are connected to the grounding wire.

[0011] Furthermore, both ends of the wheel axle of the wheel set are mounted on locking blocks, and the locking blocks are fixedly mounted on the ends of the balance guard plate in a detachable manner.

[0012] Furthermore, the two ends of the conductive wheel axle of the conductive wheel assembly are mounted on the conductive wheel axle caps, and the conductive wheel axle caps are mounted on the middle part of the balance guard plate through elastic elements. The conductive wheel assembly is pushed upward under the compressive force of the elastic elements.

[0013] Furthermore, the axle cap includes mounting plates on the left and right sides. Each of the mounting plates is fixedly mounted on a twin-screw fixing seat via a guide screw. A compression spring is sleeved on the guide screw and placed in a compressed state between the mounting plate and the twin-screw fixing seat.

[0014] Furthermore, the main frame includes two symmetrically arranged main rods, with a wheel assembly installed between the main rods. A triangular plate with hanging holes is installed between the tops of the main rods.

[0015] Furthermore, a grounding wire lug is provided on the outer surface of the fixing ear. One end of the grounding wire is connected to the end of the conductive wheel axle of the conductive wheel assembly, and the other end is connected to the grounding wire lug. The grounding wire lug is then connected to the grounding wire.

[0016] Furthermore, the number of conductive wheels on the conductive wheel assembly is the same as the number of wheels on the wire wheel assembly, and their arrangement direction and position are consistent, allowing the same wire to pass through.

[0017] The working principle and beneficial effects of this invention are as follows: The wheel set of this invention features a symmetrical design, with two sets of wheels on each side. Hinged together in the middle of the balance guard plate, the two sets of wheels on each side can rotate adaptively and swing adaptively with the movement of the cable, eliminating forces and preventing cable damage caused by forces during transport, achieving self-balancing transport. This also allows the cable to pass at the most suitable angle, providing stable and safe support for the cable. Furthermore, the hinged balance guard plate allows the wheel set to be arranged obliquely or laterally, satisfying transport in multiple directions. It can also be folded and stored during transport or storage. Adjusting the two sets of wheels on each side to a longitudinal arrangement shortens the lateral space length, facilitates neat stacking, and saves space. Specifically, the tilt angle and shape of the balance guard plate can be limited and controlled through pin holes and limiting pins to achieve the desired range of motion. The operation is simple, and the structure is reasonable and stable. The conductive wheel assembly, made of conductive metal material, is positioned between two sets of wheels. It contacts the passing cable, and any induced current generated is transmitted to the grounding conductor, ultimately eliminating the induced current. The grounding conductor uses a graphene and copper core for guidance, offering fast discharge speed, resistance to lightning current surges, and a long service life, making it suitable for field and high-altitude operations. During use, the conductive wheel assembly is positioned below the cable, with the cable passing above it. To ensure contact with each cable, elastic elements are installed at both ends of the conductive wheel assembly for support. However, compared to a rigid connection, when the downward pressure from the cable is excessive, the elastic elements compress to avoid damage, achieving both stability and safety while effectively releasing induced current. This invention utilizes a three-axis pulley system to support the conductor, reducing the envelope angle and thus the bending radius of the conductor on the pulley, preventing damage to the internal structure of the conductor and ensuring the quality of the conductor after installation. By adding a high-conductivity roller to the cable-laying trolley, the induced current on the conductor is fully unloaded during the laying process, preventing burns, strand breakage, or even wire breakage caused by induced current. The effective unloading of induced current eliminates potential harm from it, thus fundamentally ensuring the safety of construction personnel. This invention has a scientifically sound and reasonable overall structure, improving the stability and safety of cable transmission. Furthermore, its structure is user-friendly and retractable, possessing broad market prospects and demand. Attached Figure Description

[0018] Figure 1 This is a front view of the structure of the grounding trolley for graphene-copper transmission lines according to the present invention.

[0019] Figure 2 This is a top view of the grounding pulley for the graphene-copper transmission line of the present invention.

[0020] Figure 3This is a three-dimensional structural view of the grounding pulley for the graphene-copper power transmission line of the present invention.

[0021] Figure 4 This is a perspective view of the wheel assembly structure of the grounding trolley for graphene copper power transmission lines according to the present invention.

[0022] Figure 5 This is a front view of the structure of the grounding trolley for graphene-copper power transmission lines after the wheel assembly is stored.

[0023] Figure 6 This is a schematic diagram of the grounding wire structure of the grounding trolley for the graphene copper transmission line of the present invention.

[0024] Figure 7 This is a perspective view of the grounding wire structure of the grounding trolley for the graphene copper transmission line of the present invention.

[0025] Figure 8 This is a schematic diagram of the cross-sectional structure of the graphene copper wire used in the grounding wire of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the graphene copper wire used in the grounding wire of the present invention.

[0027] The components include: 1. Wire rope pulley, 2. Conductor pulley, 3. Main frame, 4. Balance guard plate, 5. Conductive wheel assembly, 6. Grounding wire, 31. Diagonal tie beam, 32. Support rod, 33. Fixing lug, 34. Limiting pin, 7. Metal chain, 35. Locking block, 36. Conductive wheel axle cap, 37. Conductive wheel axle, 38. Mounting plate, 381. Guide screw, 382. Twin screw fixing seat, 383. Compression spring, 310. Main rod, 311. Triangular plate, 312. Hanging hole, 8. Grounding wire lug, 51. Conductive wheel, 21. Wheel piece; 61. Graphene wire, 62. Copper wire. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0029] Example 1: A grounding trolley for graphene copper transmission lines includes a wheel assembly consisting of a conductor wheel 2 and a wire rope wheel 1, and a main frame 3 for mounting the wheel assembly. The wheel assemblies are symmetrically distributed on both sides of the main frame 3, with two sets of wheel assemblies on each side. Each wheel assembly is axled and mounted at both ends of a balance guard plate 4. The balance guard plate 4 is hinged, allowing it and the wheel assemblies at both ends to fold into a symmetrical and longitudinally distributed folded storage state under thrust. A conductive wheel assembly 5 is also provided in the middle of the balance guard plate 4, transversely positioned between the two sets of wheel assemblies. One end of the conductive wheel assembly 5 is connected to a grounding conductor 6. The grounding conductor 6 includes an outer insulating sheath and a composite core inside the insulating sheath. The composite core is made of several graphene wires 61 and several copper wires 62 interlaced. In the composite core of the grounding conductor 6, an outer layer of graphene wire 61 and a copper wire 62 are alternately staggered and distributed around the periphery of the central core. In this embodiment, the center line is a copper wire 62, surrounded by three graphene wires 61 and four copper wires 62 interleaved. Each graphene wire 61 or copper wire 62 is actually a bundle of several thin wires. This structure maintains the overall strength of the wire while increasing conductivity, resulting in good discharge effect, fast discharge speed, resistance to lightning current impact, and a longer service life, making it more suitable for field and high-altitude operations. In actual use, the main frame 3 serves as the main support and installation body. The wheel sets are installed on both sides of the main frame 3, forming a symmetrical structure. The wire wheel 2 is placed in the middle, with an equal number of wire rope wheels 1 on both sides, forming a wheel set coaxially. A wheel set is installed at each end of the balance guard plate 4 to achieve symmetrical balance. Through the hinge in the middle of the balance guard plate 4, the two wheel sets on each side can rotate adaptively and swing adaptively with the movement of the passing cable, eliminating the force and preventing cable damage caused by the force during transportation, achieving self-balancing transportation, and also facilitating cable transport. The optimal angle provides stable and safe support for the sliding line; on the other hand, the articulated balance guard plate 4 allows the wheel set to be arranged diagonally or laterally, which can meet the needs of multi-directional transportation, and can also be folded and stored during transportation or storage. After the two sets of wheels on each side are adjusted to be arranged longitudinally, the lateral space length is shortened, which is also conducive to the neat arrangement when stacking and does not occupy space. Specifically, the tilt angle and shape of the balance guard plate 4 can be limited and controlled by the pin hole and the limiting pin 34 to achieve the desired range of motion. The operation is simple and the structure is reasonable and stable.The conductive wheel assembly 5 is positioned between the two sets of wheels and is made of conductive metal material. It comes into contact with the passing cable. Once an induced current is generated, it can be transmitted by the conductive wheel assembly 5 to the grounding wire 6 for final grounding, thus eliminating the induced current. In use, the conductive wheel assembly 5 is placed below the cable, with the cable passing above it. To ensure that it can contact each cable, elastic elements are installed at both ends of the conductive wheel assembly 5 to support it and make contact with the cable. However, compared to a rigid connection, when the downward pressure of the cable is too great, the elastic elements will compress and make way to avoid damage to the cable. This achieves a stable and safe function while effectively contacting the cable to release the induced current.

[0030] Preferably, the hinge assembly includes: the middle part of the balance guard plate 4 is hinged to the lower end of the diagonal beam 31 and the outer end of the support rod 32; the inner end of the support rod 32 is connected to the middle of the main frame 3; and the upper end of the diagonal beam 31 is connected to the upper fixing lug 33 of the main frame 3. The balance guard plate 4 can drive the two sets of wheels to rotate in a self-balancing manner at the hinge point. The diagonal beam 31, the support rod 32, and the main frame 3 form a stable triangular support structure, which can provide force support for the load-bearing support of the entire wheel set and can also serve as a limit control for the rotation of the balance guard plate 4. For example, the diagonal beam 31 is provided with at least one pin hole, and the limiting pin 34 can be inserted into the pin hole to limit the rotation range of the balance guard plate 4. When it is necessary to limit the rotation height of the balance guard plate 4, a limiting pin 34 is inserted and locked in the area above the balance guard plate 4. It extends from the inside of the main frame 3 and can block the upward displacement of the balance guard plate 4, thereby limiting its direction of movement. Similarly, in the storage state, the balance guard plate 4 is in a longitudinally distributed state. At this time, the limiting pins 34 are inserted in both sides of the balance guard plate 4 to limit its rotation and keep it in a longitudinally distributed folded storage state, so that it will not deflect during transportation. It can also meet various tilting methods to match the movement direction of the conveying cable, increasing the ease of use and practicality of the cable laying trolley.

[0031] Preferably, a metal chain 7 is attached to the tail end of the limiting pin 34, and the metal chains 7 of all the limiting pins 34 on each side are connected to the grounding wire 6. The limiting pins 34 are installed on the cable tie beam 31, which can also quickly release the induced electricity that may be generated on the cable tie beam 31 or the main frame 3, further improving the timeliness and effectiveness of induced electricity release; and eliminating the possibility of electric arc.

[0032] Preferably, both ends of the wheel axle of the wheel assembly are mounted on locking blocks 35, and the locking blocks 35 are fixedly mounted on the ends of the balance guard plate 4 in a detachable manner. This structure facilitates daily maintenance and repair operations.

[0033] Preferably, the two ends of the conductive wheel axle 37 of the conductive wheel assembly 5 are mounted on the conductive wheel axle cap 36. The conductive wheel axle cap 36 is mounted on the middle part of the balance guard plate 4 through an elastic element. The conductive wheel assembly 5 is pushed upward under the compressive force of the elastic element. The wheel axle cap includes mounting plates 38 on the left and right sides. The left and right sides of the mounting plates 38 are fixedly mounted on the double screw fixing seat 382 by guide screws 381. The compression spring 383 is sleeved on the guide screws 381 and is placed in a compressed state between the mounting plate 38 and the double screw fixing seat 382. The compression spring 383 can extend and retract on the guide screw 381. The end of the guide screw 381 has a thread for mounting on the twin screw fixing seat 382. On the one hand, it allows the mounting plate 38 to be mounted on the twin screw fixing seat 382, ​​and on the other hand, it provides a movable area for the mounting plate 38. Under normal conditions, the compression spring 383 maintains tension and supports the mounting plate 38, thereby lifting the conductive wheel shaft 37, i.e., the conductive wheel assembly 5, upward so that it can make contact with the cable and prevent situations such as free rotation or lack of contact. In special cases, when the direction of the cable changes, the compression spring 383 can continue to be compressed when the conductive wheel shaft 37 is pressed, allowing displacement space and making the cable feeding process more stable and safe.

[0034] Specifically, the main frame 3 includes two symmetrically arranged main rods 310, with a wheel assembly installed between the main rods 310. A triangular plate 311 is installed between the tops of the main rods 310, and the triangular plate 311 has hanging holes 312 for mounting the rear suspension.

[0035] On the outer surface of the fixing ear 33, a grounding wire lug 8 is provided. One end of the grounding wire 6 is connected to the end of the conductive wheel axle 37 of the conductive wheel assembly 5, and the other end is connected to the grounding wire lug 8, which is then connected to the grounding wire. This structure allows the grounding wires 6 to be uniformly gathered in the middle of the main frame 3 before being led to the ground through the grounding wire. This structure provides force constraint and regulates the direction of the grounding wires 6, preventing excessive grounding wires 6 from scattering and causing accidents such as entanglement.

[0036] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A grounding pulley for a graphene copper transmission line, comprising a wheel assembly consisting of a conductor wheel (2) and a wire rope wheel (1), and a main frame (3) for mounting the wheel assembly, characterized in that, The wheel sets are symmetrically distributed on both sides of the main frame (3), with two sets of wheel sets on each side. The wheel sets on each side are axle-mounted at both ends of the balance guard plate (4). The balance guard plate (4) is hinged to the main frame (3) through a hinge assembly, so that the balance guard plate (4) and the wheel sets at both ends can be flipped into a symmetrical and longitudinally distributed folded storage state under the thrust. A conductive wheel set (5) is also provided in the middle of the balance guard plate (4), which is placed between the two sets of wheel sets and parallel to the two sets of wheel sets. One end of the conductive wheel set (5) is connected to the grounding wire (6). The grounding conductor (6) includes an outer insulating sheath and a composite core placed inside the insulating sheath. The composite core is made of several graphene wires (61) and several copper wires (62) interlaced together. The hinge assembly includes a tie beam (31) and a support rod (32). The middle part of the balance guard plate (4) is hinged to the lower end of the tie beam (31) and the outer end of the support rod (32). The inner end of the support rod (32) is connected to the middle part of the main frame (3). The upper end of the tie beam (31) is connected to the upper fixed lug (33) of the main frame (3). The balance guard plate (4) can drive two sets of wheels to rotate in a self-balancing manner around the middle hinge point of the balance guard plate (4). At least one pin hole is provided on both the tie beam (31) and the support rod (32). A limiting pin (34) can be inserted into the pin hole and can limit the rotation range of the balance guard plate (4). A metal chain (7) is attached to the end of the limit pin (34), and the metal chains (7) of all the limit pins (34) on each side of the main frame (3) are connected to the grounding wire (6).

2. The grounding pulley for graphene-copper transmission lines according to claim 1, characterized in that, The composite core of the grounding conductor (6) is surrounded by an alternating graphene wire (61) and a copper wire (62) around the periphery of the central core.

3. The grounding pulley for graphene-copper transmission lines according to claim 1, characterized in that, Both ends of the wheel axle of the wheel set are mounted on locking blocks (35), and the locking blocks (35) are fixedly mounted on the end of the balance guard plate (4) in a detachable manner.

4. The grounding pulley for graphene-copper transmission lines according to claim 2, characterized in that, The two ends of the conductive wheel axle (37) of the conductive wheel assembly (5) are mounted on the conductive wheel axle cap (36). The conductive wheel axle cap (36) is mounted on the middle part of the balance guard plate (4) through an elastic element. The conductive wheel assembly (5) is pushed upward under the elastic force of the elastic element.

5. The grounding pulley for graphene-copper transmission lines according to claim 4, characterized in that, The conductive wheel axle cap (36) includes mounting plates (38) on the left and right sides. The left and right sides of the mounting plates (38) are fixedly mounted on the twin screw fixing seat (382) by guide screws (381). The compression spring (383) is sleeved on the guide screws (381) and is placed between the mounting plate (38) and the twin screw fixing seat (382) in a compressed state.

6. The grounding pulley for graphene-copper transmission lines according to claim 1, characterized in that, The main frame (3) includes two symmetrically arranged main rods (310), the wheel set is installed between the main rods (310), a triangular plate (311) is installed between the tops of the main rods (310), the triangular plate (311) is provided with hanging holes (312), and the two main rods (310) are distributed along the wheel axle extension direction of the wheel set.

7. The grounding pulley for graphene-copper transmission lines according to claim 4, characterized in that, On the outer surface of the fixed ear (33), a grounding wire nose (8) is provided. One end of the grounding wire (6) is connected to the end of the conductive wheel axle (37) of the conductive wheel assembly (5), and the other end is connected to the grounding wire nose (8). The grounding wire nose (8) is then connected to the grounding wire.

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