Section of the trunk of a metal support of an overhead power line 6-220 kV

Abstract

This utility model relates to energy construction. The objective of the claimed utility model is to create a section of a metal overhead power line support shaft with a simplified manufacturing process, while maintaining the rigidity and reliability of the structure. The technical result is achieved by creating a section of the trunk of a metal support of an overhead power transmission line, which consists of sections (1) forming its trunk, which are connected to each other and fastened to the foundation (3) using bolted connections, crossbars (2) are fastened to the trunk with bolts, while the section of the trunk of the metal support of an overhead power transmission line (1) is a lattice rack of a truss type, consisting of four faces, including rectilinear rods from steel angular profiles of a belt (5), diagonals (6), spacers (11), trusses (10) and horizontal ties (7), rigidly connected to each other at nodes and forming a geometrically unchangeable system,the section is provided with at least two horizontal ties (7) located in its middle part and at least one rigid unit (9), wherein the horizontal ties (7) are rods made of hot-rolled or bent rolled metal, welded at the ends to plates (8), which in turn are rigidly attached to the section belts (5) by welding, the rigid unit (9) is a rectangle in the form of spacers (11) welded to the belts (5) from their inner part, and four trusses (10) welded to the upper shelves of the spacers (11), wherein the trusses (10) are welded in such a way that they form a rhombus inscribed in the rectangle. 8 fig.,

Description

[0001] The utility model relates to energy construction. A metal lattice support is known (see patent CN 107859412, IPC: E04H 12 / 10, published on March 30, 2018), comprising vertical load-bearing chords made of a tubular section, connected by lattice elements, and transverse stiffening diaphragms formed from angles, ensuring the geometric rigidity of the shaft. Each transverse stiffening diaphragm consists of four struts, pairedly connecting the load-bearing chords to form a closed loop along the perimeter of the shaft, and one or two diagonal rods installed at the level of the struts (the plane of the diaphragm) and connected to them by means of sheet metal fittings and bolted connections. The disadvantages of the known support include the increased metal consumption of the structure and the labor intensity of installation work, which is due to the use of fittings and bolted connections.

[0002] A transmission line support pole is known (RU Patent 157872), made in the form of a spatial lattice structure containing chords of angular sections connected by lattice elements, and at least one transverse stiffening diaphragm, including spacers made of angular sections connecting adjacent chords, fixed on the inner surfaces of the shelves of the connected chords by the edges of their shelves, and diagonal rods made of angular sections, fixed at the junction of the chords and spacers by means of gussets. The gussets are attached to the ribs of the struts converging to the corresponding chord, the diagonal rods are installed on the plane of the gussets by the edges of their shelves, wherein one of the diagonal rods is made solid, and the other consists of two parts connected to each other in the intersection zone of the diagonal

[0003] rods by means of a plate placed below, on the surface of which the diagonal rods are fixed by the edges of their shelves

[0004] The main disadvantage of the closest analogues of the trunk section of the metal support of the overhead power line (rack) is the presence of a stiffening diaphragm made of hot-rolled steel of various sections (angle, pipe, bent closed profile, etc.) which are attached to the belts of the racks or spacers, as well as to each other using plates or for fastening to each other in one of the elements, cutouts are used, which increases the metal consumption of the structure, increases the nomenclature of the rolled metal used and complicates the technological process of manufacturing (increased number of welded seams, increased consumption of auxiliary materials - "consumables", readjustment of equipment, etc.).

[0005] The objective of the claimed utility model is to create a section of the trunk of a metal support for an overhead power line, with a simplified manufacturing process, without losing the rigidity and reliability of the structure.

[0006] The technical result achieved by using this utility model is a reduction in the metal content of the trunk section of a metal overhead power line support while maintaining the required structural rigidity. Other effects (weight reduction, fewer welded joints, and reduced manufacturing and installation labor) are described as consequences of achieving this technical result.

[0007] The technical result is achieved by creating a section of the trunk of a metal support of an overhead power line, consisting of sections (1) that form its trunk, which are connected to each other and secured to the foundation (3) using bolted connections, a crossbar (2)

[0008] is attached to the trunk with bolts, wherein the trunk section of the metal support of the overhead power line (1) is a lattice truss-type rack consisting of four faces including rectilinear rods made of steel angular belt sections (5), diagonals (6), spacers (11), trusses (10) and horizontal ties (7), rigidly connected to each other at the nodes and forming a geometrically unchangeable system, the section is equipped with at least two horizontal ties (7) located in its middle part, and at least one rigid node (9), wherein the horizontal ties (7) are rods made of hot-rolled or bent rolled metal welded at the ends to the plates (8), which in turn are rigidly attached to the section belts (5) by welding, the rigid node (9) is a rectangle in the form of struts (11) welded to the belts

[0009] (5) from their inner part and four trusses (10) welded to the upper shelves of the spacers (11), while the spacers and trusses form a closed spatial truss cell.

[0010] Disclosure of Utility Model

[0011] The trunk section of the metal support of the overhead power line is a lattice truss-type rack consisting of four faces, including straight rods made of steel angle sections (belts, diagonals, spacers, trusses and horizontal ties), connected to each other at the nodes and forming a geometrically unchangeable system, due to which it has increased rigidity and strength, the rack is equipped with at least two horizontal ties located in its middle part and at least one rigid node.

[0012] Horizontal ties (7) are rods made of hot-rolled or bent angle metal, fastened at the ends to

[0013] plates, which in turn are attached to the section belts by welding.

[0014] The rigid unit (9) consists of four spacers and four trusses made of hot-rolled or bent angle metal, the spacers are attached with their shelves to the shelves of the belts, thereby connecting them and forming a rectangular or square cross-section of the section rack, between each pair of spacers trusses are installed, which thereby form a closed spatial truss cell.

[0015] The metal tower of an overhead power line pole is secured to the foundation using bolted connections. The crossarms and cable support are bolted to the tower. If the tower consists of multiple sections, they are connected using bolted connections.

[0016] The claimed utility model is illustrated by drawings: Fig. 1 - general view of a support consisting of one section, Fig. 2 - general view of a support consisting of two sections,

[0017] Fig. 3 - general view of a single-chain support with a cable support consisting of two sections,

[0018] Fig. 4 - general view of a double-chain support with a cable support consisting of two sections,

[0019] Fig. 5 - drawing of the section of the metal support shaft, Fig. 6, 7 - diagrams of horizontal connections;

[0020] Fig. 8 - Rigid assembly diagram

[0021] The metal support consists of:

[0022] 1 - section trunk;

[0023] 2 - support crossbars;

[0024] 3 - support foundation;

[0025] 4 - cable resistant.

[0026] The metal support barrel section consists of:

[0027] 1 - belt;

[0028] 2 - diagonals;

[0029] 3 - horizontal connections:

[0030] 4 - plates;

[0031] 5 - hard knot;

[0032] 6 - trusses;

[0033] 7 - spacers.

[0034] A metal support for a 6-220 kV overhead power line (Fig. 1-4) consists of sections (1) that form its trunk, which are connected to each other and secured to the foundation (3) using bolted connections, and crossbars (2) are secured to the trunk with bolts. The support may consist of one or more sections.

[0035] The section of the trunk of the metal support of the overhead power transmission line (1) is a lattice truss-type post (Fig. 5), consisting of four faces including rectilinear rods made of steel angular belt sections (5), diagonals (6), spacers (11), trusses (10) and horizontal ties (7), rigidly connected to each other at nodes and forming a geometrically unchangeable system, due to which the section has increased rigidity and strength, the section is equipped with at least two horizontal ties (7) (Fig. 6, 7), located in its middle part, and at least one rigid node (9) (Fig. 8).

[0036] By installing horizontal ties (7) and a rigid node (9), the rigidity and load-bearing capacity of the trunk of the metal support of the overhead line as a whole are increased, the horizontal ties are rods made of hot-rolled or bent metal (7) welded at the ends to the plates (8), which in turn are rigidly attached to the section belts (5) by welding, this solution allows to evenly distribute the loads arising in the section elements and transfer it to the load-bearing elements, the use of plates in the nodes allows to reduce labor intensity, the rigid node (9) is a rectangle in the form of spacers (11) welded to the belts (5) from their inner part and four trusses (10) welded to the upper shelves of the spacers (11) form a closed spatial truss cell - this solution ensures the rigidity of the section structure.

[0037] The cable stand (4) is a lattice structure in the shape of a truncated pyramid, consisting of metal corner profiles (belts, spacers, braces, diaphragm).

[0038] The rack can have a constant or decreasing cross-section in the form of a rectangle or square.

[0039] Thus, the proposed utility model allows for the implementation of all three basic principles of designing metal structures, namely: the greatest savings in metal, the least labor intensity of manufacturing, and the highest installation speed.

Claims

A section of the trunk of a metal support of an overhead power line, made with the possibility of connecting with other sections of the trunk and fastening to the foundation by means of bolted connections, which is a lattice rack of a truss type, containing four faces of steel angular profiles of a belt (5), diagonals (6), a rigid unit (9) and at least two horizontal ties (7), located in its middle part, connected to each other and forming a geometrically unchangeable system, characterized in that the horizontal ties (7) are rods made of rolled metal, welded at the ends to plates (8), which in turn are rigidly attached to the belts of the section (5) by welding, wherein the rigid unit (9) is a rectangle in the form of spacers (11), welded to the belts (5) from their inner part, and four trusses (10), welded to the upper shelves of the spacers (11), wherein the trusses (10) are welded in such a way,which form, together with the spacers (11), a closed spatial truss cell.

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