Grounding pulley for tension stringing of power transmission line

Abstract

A power transmission line tension stringing grounding tackle comprises a hexagonal frame and a conductive balance mechanism. Six conductive wheels are evenly distributed on the inner side of the hexagonal frame in a circumferential rotating mode. The conductive balance mechanism comprises two elastic recovery pieces and a balance roller which are longitudinally and symmetrically arranged on the two sides of the hexagonal frame. The lower ends of the two elastic recovery pieces are fixed to the lower end of the hexagonal frame, the balance roller is arranged between the two elastic recovery pieces, and the two ends of the balance roller are rotationally connected to the upper ends of the two elastic recovery pieces respectively. According to the utility model, the conductive wheels are arranged on the inner side of the hexagonal frame so as to adapt to connectors of various specifications and models, and the universality of the grounding tackle applied to guide and guide ropes of different specifications and models is realized. By arranging the conductive balance mechanism and utilizing the flexible elastic structure of the elastic recovery piece, the lead rope passes through the space between the balance roller and the conductive wheel, so that the steel wire rope can be in close contact with the grounding tackle all the time when passing through the grounding tackle, and the situation that grounding protection is lost in the paying-off process due to jumping of the grounding tackle and the like is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power construction, in particular to a grounding pulley for tension stringing of transmission lines. Background Technique

[0002] At present, during the tension stringing process of transmission line construction, the induction electricity protection measures in the tension and traction field are generally realized by installing a grounding pulley with a three-wheel structure on the lead rope or the conductor. There are cases where the conductor and the traction rope are connected, and a connector is required for connection. Due to the structural reasons of the grounding pulley, the connector cannot pass directly through. Before the connector passes through the grounding pulley, the operator needs to stop the machine, remove the grounding pulley, install it behind the connector, and then carry out the traction operation. This process will cause the tension and traction equipment to lose protection briefly, increasing the safety risk of the operator, and frequent disassembly and assembly will also affect the construction efficiency. Such grounding pulleys have poor on-site operability, weak obstacle-crossing ability, and there are potential risks of self-unlocking or fatigue in the locking function. Summary of the Invention

[0003] In order to solve the technical problems existing in the above technology, in view of this, it is necessary to provide a grounding pulley for tension stringing of transmission lines.

[0004] A grounding pulley for tension stringing of transmission lines includes a hexagonal frame and a conductive balance mechanism; six conductive wheels are circumferentially and rotatably distributed inside the hexagonal frame, and the conductive balance mechanism includes two elastic recovery members and a balance roller symmetrically arranged longitudinally on both sides of the hexagonal frame; the lower ends of the two elastic recovery members are fixed to the lower end of the hexagonal frame, the balance roller is arranged between the two elastic recovery members, and the two ends of the balance roller are respectively rotatably connected to the upper ends of the two elastic recovery members.

[0005] Preferably, the hexagonal frame includes a first frame and a second frame; one end of the first frame is hinged to one end of the second frame, and the other end of the first frame is connected to the other end of the second frame through a fastening component, so that the first frame and the second frame form a hexagonal structure.

[0006] Preferably, the fastening component includes an ear plate and a pin rod; the ear plates are respectively arranged on the first frame and the second frame, the pin rod passes through the ear plates, and the pin rod and the ear plates are fixed by nuts.

[0007] Preferably, control rings are respectively arranged at both ends of the bottom of the second frame, and a control rope is connected to the control rings.

[0008] Preferably, the hexagonal frame is connected with a grounding wire.

[0009] Preferably, the grounding wire is connected with a grounding rod.

[0010] Preferably, the middle parts of the conductive wheels and the balance rollers are recessed downward to form an arc shape.

[0011] Compared with the prior art, the grounding pulley for tension stringing of transmission lines provided by the utility model includes a hexagonal frame and a conductive balance mechanism; six conductive wheels are circumferentially and rotatably distributed on the inner side of the hexagonal frame, and the conductive balance mechanism includes two elastic restoring members symmetrically arranged longitudinally on both sides of the hexagonal frame and a balance roller; the lower ends of the two elastic restoring members are fixed to the lower end of the hexagonal frame, the balance roller is arranged between the two elastic restoring members, and the two ends of the balance roller are respectively rotatably connected to the upper ends of the two elastic restoring members. The closed hexagonal design is adopted, and a set of conductive wheels is arranged on each side. By enlarging the size of the internal passage part of the grounding pulley to adapt to connectors of various specifications and models, the universality of the grounding pulley applied to guide ropes and pilot ropes of different specifications and models is realized, so as to avoid the dropping of the grounding pulley, realize the grounding protection in the whole process of tension stringing, reduce the number of shutdowns and the labor intensity of operators, and improve the construction efficiency. By adding a conductive balance mechanism at the front end and using the flexible elastic structure of the elastic restoring member, the pilot rope passes between the balance roller and the conductive wheels, so that the steel wire rope can always be in close contact with the grounding pulley when passing through the grounding pulley, and the grounding protection of the stringing process will not be lost due to reasons such as the jumping of the grounding pulley. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0013] Figure 1 It is a schematic structural diagram of the present utility model.

[0014] Figure 2 It is a schematic structural diagram of the hexagonal frame of the present utility model.

[0015] Figure 3 It is a schematic structural diagram of the first frame of the present utility model.

[0016] Figure 4 It is a schematic structural diagram of the second frame of the present utility model.

[0017] In the figure: hexagonal frame 01, first frame 11, second frame 12, conductive balance mechanism 02, elastic restoring member 21, balance roller 22, conductive wheel 03, fastening assembly 04, ear plate 41, pin rod 42, control ring 05, fixing plate 06. Detailed Embodiments

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc. indicating the orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0020] Please refer to Figures 1 to 4 , the present utility model provides a grounding pulley for tension stringing of transmission lines, including a hexagonal frame 01 and a conductive balance mechanism 02; wherein, the hexagonal frame 01 is made of Q235B steel. Six conductive wheels 03 are circumferentially and rotatably arranged on the inner side of the hexagonal frame 01. For the convenience of installation, a fixing plate 06 is installed on the inner surface of the hexagonal frame 01 by means of bolt fixation, and the conductive wheels 03 are rotatably installed on the fixing plate 06. The axial distance between two opposite conductive wheels 03 in a group is 202 mm, and the allowable passing width is 160 mm. It can easily pass through a 28T swivel connector, has strong versatility, and is applicable to the grounding protection scenarios of tension stringing tensioning and traction fields of any voltage class. The conductive balance mechanism 02 includes two elastic recovery members 21 and a balance roller 22 longitudinally and symmetrically arranged on both sides of the hexagonal frame 01; the lower ends of the two elastic recovery members 21 are fixed to the lower end of the hexagonal frame 01, the balance roller 22 is arranged between the two elastic recovery members 21, and the two ends of the balance roller 22 are respectively rotatably connected to the upper ends of the two elastic recovery members 21. Among them, the elastic recovery member 21 can be a spring or an elastic steel wire rope. The elastic force generated by the bending of the elastic recovery member 21 enables the balance roller 22 to always be in close contact with the conductor and guide rope being paid out, providing grounding protection throughout the process of paying out the conductor and guide rope.

[0021] In one embodiment, the hexagonal frame 01 includes a first frame 11 and a second frame 12; one end of the first frame 11 is hinged to one end of the second frame 12, and the other end of the first frame 11 is connected to the other end of the second frame 12 through a fastening assembly 04, so that the first frame 11 and the second frame 12 enclose a hexagonal structure. The opening or closing of the first frame 11 and the second frame 12 is realized through the fastening assembly 04, which can not only realize the reliable closing of the first frame 11 and the second frame 12, but also ensure that no loosening phenomenon occurs under various complex working conditions.

[0022] Specifically, the fastening assembly 04 includes ear plates 41 and a pin rod 42. The ear plates 41 are respectively arranged on the first frame 11 and the second frame 12. The pin rod 42 penetrates through the ear plates 41, and the pin rod 42 is fixed to the ear plates 41 by nuts.

[0023] In one embodiment, control rings 05 are respectively arranged at both ends of the bottom of the second frame 12, and control ropes are connected to the control rings 05. The other ends of the control ropes are anchored to the ground to form a triangular structure. When the guide rope and the lead rope move up and down significantly, the grounding pulley can effectively maintain stability with high stability.

[0024] In one embodiment, the hexagonal frame 01 is connected with a grounding wire. The grounding wire can be a flexible copper grounding wire with a cross-sectional area of 25 mm².

[0025] In one embodiment, the grounding wire is connected with a grounding rod.

[0026] In one embodiment, the middle parts of the conductive wheels 03 and the balance rollers 22 are recessed downward to form arcs.

[0027] During use, the grounding rod is buried in advance, the grounding rod is connected to the grounding wire, the fastening assembly 04 is opened to make the first frame 11 and the second frame 12 in an open state, the lead rope is passed through the conductive wheels 03 and the balance rollers 22, then the first frame 11 and the second frame are closed, so that the conductive wheel 03 at the top presses the lead rope, while the balance rollers 22 lift the lead rope upward, and the included angle between the two control ropes is adjusted (preferably 60 - 90°), and the replacement of the grounding pulley is avoided, and the installation is completed.

[0028] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A grounding pulley for tension stringing of transmission lines, characterized in that: It includes a hexagonal frame and a conductive balance mechanism; six conductive wheels are circumferentially and rotatably distributed on the inner side of the hexagonal frame, and the conductive balance mechanism includes two elastic restoring members and a balance roller symmetrically arranged longitudinally on both sides of the hexagonal frame; the lower ends of the two elastic restoring members are fixed to the lower end of the hexagonal frame, the balance roller is arranged between the two elastic restoring members, and the two ends of the balance roller are respectively rotatably connected to the upper ends of the two elastic restoring members.

2. The grounding pulley for tension stringing of transmission line according to claim 1, wherein: The hexagonal frame includes a first frame and a second frame; one end of the first frame is hinged to one end of the second frame, and the other end of the first frame is connected to the other end of the second frame through a fastening component, so that the first frame and the second frame enclose a hexagonal structure.

3. The grounding pulley for tension stringing of transmission lines according to claim 2, wherein: The fastening component includes an ear plate and a pin rod; the ear plates are respectively arranged on the first frame and the second frame, the pin rod penetrates through the ear plates, and the pin rod and the ear plates are fixed by nuts.

4. The grounding pulley for tension stringing of transmission lines according to claim 2, characterized in that: Control rings are respectively arranged at both ends of the bottom of the second frame, and control ropes are connected to the control rings.

5. The grounding pulley for tension stringing of transmission lines according to claim 1, wherein: The hexagonal frame is connected with a grounding wire.

6. The grounding pulley for tension stringing of transmission lines according to claim 5, wherein: The grounding wire is connected with a grounding rod.

7. The grounding pulley for tension stringing of transmission line according to claim 1, wherein: An arc is formed after the middle parts of the conductive wheels and the balance roller are recessed downward.

Images