RU2325499C2 - Pole support section - Google Patents

Abstract

FIELD: construction, road construction.

SUBSTANCE: invention pertains to the filed of assembling trussed bearing structures. The technical outcome is the increase in effectiveness due to lowering of transport losses along the whole way from the manufacturing factory to the site of installing the poles, and due reduction of labour intensiveness of assembling the supports in the construction. There is maintenance of the condition for parallelism or inclination and coaxiality of the section during assembly. That way, the fixed components are assembled under factory conditions. The support section for poles is in the form of a spatial trussed structure in the form of a parallelepiped or a truncated pyramid, formed by four bearing girdles, made from rolled metal or pipes, joined to each other by braces or bars. The spatial trussed structure is made in the form of two flat all-welded steel frames with a rectangular or trapezoidal shape, which present themselves as opposite borders of the section, and consisting of each of the two bearing girdles, joined to each other by welded braces or bars, as well as from separate frames. The frames have a rectangular or trapezoidal shape, and are fitted with braces or bars. The bearing girdles of the flat all-welded frames have openings or weld onto the strapping girdles with openings for assembling flat all-welded frames into the volume quadrangular in the cross-section of the structure, through mounting of separate frames onto the bearing girdles of the all-welded flat steel frames, with joining of these frames to each other using bolts.

EFFECT: increased effectiveness of trussed bearing structures with simplification of their assembly.

1 cl, 2 dwg

Description

The invention relates to the field of installation of volumetric truss supporting structures, mainly supporting pillars of power lines (power lines), and can be used for accelerated installation of structures for various purposes.

A support section for a rack is known, which is a spatial truss structure in the form of a parallelepiped having a rectangular upper and lower base plan, which are section bearing belts, interconnected at the corners by beams, which are interconnected on the side of each section section by braces or straps ( RU No. 2222488, В66С 23/62, ЕВВ 1/58, Е04Н 12/00, publ. 2004.01.27).

The disadvantage of this support section is that it is an already assembled structure used for butt joining along the belts with other similar pre-assembled sections. As a rule, such sections in the form of a parallelepiped or a truncated pyramid are assembled at the place of production, since when assembling only in the factory, it is possible to control the fulfillment of the conditions for the parallelism or inclination and alignment of the section. The assembled sections used for power transmission towers have significant dimensions, which requires a large number of transportation from the time of factory assembly to the time of installation of towers in power transmission lines.

In order to reduce the volume of transportation, most of the power transmission line towers are currently supplied from manufacturers in the form of individual pieces of angle-rolled sections with holes that are assembled on bolted joints in a three-dimensional structure at the bases of construction and installation organizations. At the same time, transportation is saved at the stage of transportation from the manufacturer to the warehouse of construction and installation organizations, however, transporting the assembled sections to the power transmission line remains very costly - to transport one support to the route, depending on the type of support, it is necessary to carry out 2 to 5 flights by long transport. Shipment of supports in the form of individual elements often leads to understaffing, because individual small support elements may be lost or stolen during transportation and repacking. It should also be noted the great complexity of the process of assembling structures on bolted joints.

With an increase in the power line voltage class, the spatial volume of the truss rack increases. It does not present a problem to develop a support strut that can withstand the corresponding loads, however, the problem remains in the delivery of sections of such a truss to the installation site in the power transmission line.

In this regard, the present invention is directed to solving the technical problem of performing the support section of the national team rack from separate pre-assembled enlarged units assembled in the factory. The technical result achieved in this case is to increase efficiency by reducing transport costs all the way from the manufacturer to the place of installation of the support in the power transmission line and by reducing the complexity of assembling the support in the three-dimensional structure, while ensuring the parallelism or inclination and alignment of the section when assembly because enlarged nodes are assembled in the factory.

The specified technical result is achieved by the fact that in the support section for the rack, which is a spatial truss structure in the form of a parallelepiped or a truncated pyramid formed by four load-bearing belts made of rolled steel, pipes or any other profile, including a bent variable or constant section, interconnected by braces or slats, the spatial truss is made in the form of two flat all-welded steel frames, which are opposite faces and sections and each consisting of two load-bearing belts interconnected by braces or strips for welding, as well as braces or strips with holes at the ends in the form of a separate set of elements or attached to a common frame, and the bearing belts of flat all-welded frames contain holes or welded to the belts of the lining with holes for assembling flat all-welded frames into a three-dimensional quadrangular cross-sectional structure by bolting the two indicated flat frames to each other with the indicated slats or braces.

These features are significant and interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

Figure 1 - General view of the support section in the assembled state, the sections are connected by separate braces;

figure 2 shows the assembly of the section, the sections are connected by braces attached to a common frame.

The invention contemplates a support section from which a power transmission tower or other surround truss structures are mounted.

The support section in assembled form is a spatial truss in the form of a parallelepiped or a truncated pyramid formed by four load-bearing belts made of rolled steel, pipes or any other profile, including a bent variable or constant section, interconnected by braces or planks.

A feature of the present invention is that the truss is collapsible from individual elements, which are then assembled at the installation site of the rack.

Spatial truss structure (figure 1) is made in the form of two flat all-welded steel frames 1, which are opposite sides of the section. Each frame consists of two bearing belts 2, interconnected by braces 3. Thus, each frame is a separate flat enlarged element of a rectangular or trapezoidal shape in plan.

In addition, the bearing belts are made either with holes 5 on the other side, or with welded-on plates 6 with holes to which, when mounting, brackets or strips 4, supplied as a separate set, are made, which are made with holes at the edges for bolting to the bearing belts of the frames.

Braces or straps can also be attached to a common separate frame 7 having a rectangular or trapezoidal shape in plan, which is attached to the bearing belts when assembling the section, and holes in the bearing belts or in welded overlays are also used (Fig. 2).

The assembly of flat all-welded frames into a three-dimensional quadrangular cross-sectional structure is carried out by bolting two indicated flat frames to each other with the indicated slats or braces, or frames with braces, or brackets. Since all-welded steel frames with all the connecting holes and a set of braces or strips with counter holes are made in the factory with control of the connection points, the installation maintains the spatial position of all elements both in parallelism or inclination of the faces, and in alignment of the support as a whole.

Bearing belts of all-welded frames 1, a separate frame 7 are made of, for example, a corner steel profile. Braces or strips can be made in the form of steel strips, segments of steel pipes with tapered ends or from a steel corner.

The use of a collapsible section allows even very large sections to be transported to places that are difficult to access for special vehicles, while increasing the efficiency of installation work by reducing the complexity of transporting and assembling the section at the installation site of the support truss, reducing transportation costs and facilitating the assembly of large sections.

The present invention is industrially applicable, as it can be manufactured using technologies commonly used in the manufacture of support sections.

Claims (1)

The support section for the rack, which is a spatial truss structure in the form of a parallelepiped or a truncated pyramid, formed by four load-bearing belts made of rolled steel or pipes, interconnected by braces or straps, characterized in that the spatial truss structure is made in the form of two flat all-welded steel frames of a rectangular or trapezoidal shape in plan, representing the opposite faces of the section, and consisting of each of two bearing belts, connected x with each other for welding by braces or planks, as well as from separate frames having a rectangular or trapezoidal shape in plan, to which braces or planks are attached, and the bearing belts of flat all-welded frames contain holes or plates welded to the belts with holes for assembling flat all-welded frames in a volumetric quadrangular cross-sectional structure by attaching individual frames to the bearing belts of all-welded flat steel frames when connecting these frames with bolts to each other.

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