RU2614180C1 - Prefabricated light support for emergency and restoration works on power lines - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: prefabricated light support consists of two X-connected struts 1, strut support 2, three hinged sections of triangular base 3, consisting of two parts with flange connections 4 in the middle, horizontal beams 5, 6, located above and below the intersection node X-connected struts, 1 rack, flexible traverses 7, flexible ties 8 that unite the upper and lower ends of X-connected struts 1 on one side of the vertical axis of the support. Base section 3, X-connected struts 1, strut support 2 and horizontal beams 5, 6 are interconnected by hinge joints.

EFFECT: simplified installation and reduced their labour input in support construction in place, allows for installation without foundation construction and heavy machinery application.

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Description

Technical field

The invention relates to the field of electric power, in particular, to the designs of prefabricated lightweight supports for emergency repair work on power lines.

State of the art

Known support for the suspension of wires of a power line (AS SU No. 65425, class 21 s, 12, publ. 10/31/1945), including X-shaped intersecting rods, strut, propping these rods at the point of intersection, supporting the transverse crosshead for wires, rods and struts are fixed to massive foundations or they are embedded directly in the ground.

The disadvantage of the support is the need to build a deep foundation for the installation of the support, requiring the use of heavy special equipment, which is not always possible in the field.

Known X-shaped transmission line support (AS US No. 3162719, class 174-45, publ. 12/22/1964), including X-shaped intersecting rods installed in the ground and rammed, two halves of the clamp installed at the intersection rods with teeth for more effective engagement with the rods, supporting the transverse traverse for wires.

The disadvantages of the support are the need to construct a buried foundation, the difficulty of installing each of the X-shaped intersecting rods at an angle to the vertical, the inefficiency of using teeth on the halves of the clamps on metal, concrete and plastic supports.

Known quick-mounted V-shaped hinged support of the power line (RU No. 2065013, IPC Е04Н 12/00, publ. 08/10/1996), including two V-shaped mounted metal racks, interconnected along the tops of a flexible insulating traverse, supported on one common surface the foundation elongated along the axis of the line by means of two adjacent hinges and fastened with side braces attached to their vertices placed across the line axis and additional pair braces attached at one end to the upper part of the racks and others to additional hinges mounted on the foundation on opposite sides of the support hinge of each rack along one horizontal axis with it, and the angle between the flexible insulating traverse and the horizontal in the mounting mode, set by the tension of the side braces, is determined from the ratio

The disadvantage of the support is the need to construct a buried foundation for fixing the support with lateral guy wires, changing the geometry of the support after installing the OHL line wires on a flexible insulating cross-beam, which leads to additional time costs when adjusting guy wires and the necessary calculations for the correct preliminary installation of the support.

The closest technical solution to the proposed one is the support of a power line (RU No. 1416647, IPC Е04Н 12/00, publ. 08/15/1988), including X-shaped racks installed on foundations and equipped with a horizontal beam installed below their intersection, strut fixed to the beam with the formation of the console, while the support is equipped with flexible connections, some of which combine the upper ends of the struts and the base of the strut, others - the upper and lower ends of the racks located on one side of the vertical axis of the support, the third - the upper and the lower ends of the struts with the strut console, additional ties that combine the base of the strut with its console through the point of intersection of the struts, and puffs connecting the points of support of the struts and struts.

A disadvantage of the known solution is the lack of structural rigidity, which does not allow delivery of a fully assembled support to the installation site, as well as installation without the use of heavy special equipment, a helicopter. The presence of a large number of tensioners mounted at the same points significantly increases the installation time and makes it difficult to meet the condition of simultaneous pre-tensioning in them. X-shaped struts and strut have a significant mass, as they are not composite, which complicates the preparation and installation of the support.

SUMMARY OF THE INVENTION

The task of the invention is to remedy the above disadvantages.

The technical result is achieved by the fact that two X-shaped connected racks are installed on the base and equipped with horizontal beams installed below and above their intersection node, the strut is mounted on the base, and the beam is flexible, flexible connections combine the upper and lower ends of the racks on one side of the vertical axis of the support, the base is made of three sections connected in a triangle, each of which, as well as the X-shaped struts and the strut, consist of two parts with a flange connection in the middle, the strut base Ia, an X-shaped connection strut, brace, the base section and the horizontal beams are interconnected by hinges to form a rigid three-dimensional structure.

The drawing shows a prefabricated lightweight support for emergency recovery work on power lines (in axonometry).

The quick-mounted lightweight support includes two X-shaped struts 1, strut 2, three articulated sections - a triangular base 3, consisting of two parts with a flange connection 4 in the middle, horizontal beams 5, 6 located above and below the intersection of the X-shaped connected racks, flexible traverse 7, flexible ties 8, combining the upper and lower ends of the X-shaped connected racks 1 on one side of the vertical axis of the support.

Two X-shaped racks, a strut, a triangular base, horizontal beams of a quick-erected lightweight support for emergency repair work on power lines can be made of either composite material, or they can be made of metal, concrete, plastic, wood, can be solid section or hollow, with a section in the form of a circle or polygon. The number of parts in the X-shaped struts, strut, three articulated sections can increase, based on the feasibility of choosing their mass for installation without special equipment, and can also be made either cylindrical, conical or pyramidal, if necessary, to optimize dimensions in different sections and the convenience of performing articulated and flange joints for assembly between themselves.

The construction of a prefabricated lightweight support for emergency repair work on power lines is carried out in six stages.

At the first stage, the strut and sections of the base 3 are assembled from the components using a flange connection 4.

In the second stage, the sections of the base 3 are assembled into a triangle using a swivel.

At the third stage, X-shaped racks 1 are assembled 1. To the two corners of the triangular base 3, one part of the racks 1 is attached using a swivel bracket-hinge, then the remaining parts are attached to the installed parts of the racks 1 using a flange connection 4. The assembled from the parts of the racks are crossed and collect among themselves.

At the fourth stage, horizontal beams 5, 6 and strut 2 are installed. To the X-shaped racks 1, horizontal beams 5, 6 are installed, located above and below the intersection, the horizontal beam above the intersection 5 is equipped with a platform and is used when installing wires, the horizontal beam below the intersection 6 is provided with a hinge to which the strut 2 is attached.

At the fifth stage, a flexible crosshead 7 and flexible ties are installed 8. A flexible crosshead 7 is installed between the upper ends of the X-shaped connected struts 1, and flexible ties 8 are installed between the upper and lower ends of the X-shaped connected struts 1 on one side of the vertical axis of the support. Flexible connections 8 are set with pre-tensioning.

At the sixth stage, the final assembly is carried out - the installation of a quick-mounted lightweight support. With the help of a winch or special equipment, X-shaped racks 1 are lifted until the strut 2, sliding with its lower end on the surface of the earth, comes into its hinge in the free corner of the triangular base 3, forming a rigid spatial structure.

The design of the quick-mounted lightweight support for emergency recovery work on power lines allows you to:

- deliver the support to the installation site in a compact form;

- fix the support at the installation site without erecting a foundation;

- mount without the use of special equipment, helicopter;

- to increase the manufacturability and reduce the overall size of the length of the support set, occupied in the warehouse in a transport position due to the possibility of parsing sections into components;

- to fulfill the condition of simultaneous pre-tensioning in flexible bonds;

- use only two flexible connections;

- significantly reduce the time of repair and restoration work on overhead power lines by delivering a fully assembled support to the installation site.

Claims (1)

A quick-mounted lightweight support for emergency repair work on power lines, containing two X-shaped racks installed on the base, equipped with a horizontal beam installed below their intersection, a strut, a flexible crosshead, flexible ties that combine the upper and lower ends of the racks along one side of the vertical axis of the support, characterized in that the base is made of three sections connected in a triangle, each of which, as well as X-shaped connected racks and strut consist of two parts with a flange in the middle, base stand, an X-shaped connection strut, brace, the base section and the horizontal beams are interconnected by hinges to form a rigid three-dimensional structure.

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