RU66763U1 - PERFORATED TWO-BRANCH STAND - Google Patents

Abstract

The utility model relates to building metal structures and is intended to support the ceilings and coatings of buildings and structures, it can be a design of lighting poles, communication systems. The rack contains branches made of pre-cut along the wall along a zigzag line of perforated I-beams, and perforated steel plates. Increases stiffness, bearing capacity and stability of the rack without additional material consumption.

Description

The utility model relates to building metal structures, and more specifically to perforated racks (columns) used to maintain floors and coatings of buildings and capable of performing other functions (lighting poles, communication systems, etc.).

Known devices of metal structures of perforated racks (columns) made of:

- split rolling profiles (I-beams, etc.) by dissolving along the wall of the initial profile along a zigzag line with subsequent butt welding of protrusions of the formed parts [Kopytov MM Perforated rods and methods for their research. Tomsk - 2002 (p. 4, fig. 1.1.c)]. At the same time, a regularly perforated structure is obtained from a continuous rolling profile. The disadvantage of this design is the limited dimensions of the cross section of the assortment of the original profiles and a significant difference in the radii of inertia relative to the main axes of the section;

- rolling profiles (I-beams, channels, corners); interconnected by perforated plates [Kopytov MM Perforated rods and methods for their study. Tomsk - 2002 (p. 4, fig. 1.1.a); Kopytov M.M. Perforated rods. Tomsk -1980 (p.79, fig.4.16)]. As a result, a two-branch column is formed, the branches of which are connected by perforated plates. The disadvantage of this design is the relatively small degree of development of the section, limited by the height of the wall of the original profile.

The holes in the profiles and plates can be in the form of a square, rectangle, hexagon, circle, oval.

Closest to the claimed perforated rack is a rack formed of two continuous rolling profiles (I-beams, channels), interconnected by perforated plates by welding, rivets or bolts with the formation of a two-branch column [Kopytov M.M. Perforated rods. Tomsk - 1980 (p. 79, fig. 4.16)]. To increase the bearing capacity, it is necessary to increase the number of solid profiles. This leads to an increase in metal consumption.

The objective of the utility model is to increase the bearing capacity and stiffness of the rack at low metal and labor costs.

The problem is solved as follows. Two known perforated I-beams formed by dissolving along the wall of the initial profile in a zigzag line with subsequent butt welding of the protrusions of the formed parts are connected into one section of a closed profile using two perforated plates. Thus, the claimed device differs from the prototype in the use of perforated profiles instead of solid ones. This indicates the "novelty" of the claimed device. Due to the proposed replacement of continuous profiles with perforated ones, the rigidity and bearing capacity of the rack (column) increases, since the perforated I-beams have a higher height compared to the original ones, without additional material consumption.

In figure 1. depicts a General view of a fragment of a perforated two-branch rack (column); figure 2 is a view aa of figure 1; figure 3 - section 1-1 of figure 1.

The perforated two-branch rack contains two developed I-beams 1, 2 and two perforated plates 3 (Figs. 1, 2, 3). Elements 3 (figures 1, 2, 3) are attached to the outer (outer) sides of the shelves of the developed I-beams 1, 2 by welding, rivets or bolts. Possible execution

such a rack using as elements 1, 2 welded composite perforated I-beams.

The manufacture of perforated two-branch racks is as follows. Known methods (gas, plasma or laser cutting) dissolve the walls of the original I-beams (or other rolling profiles) along a zigzag line. The "halves" of the I-beams are formed, which are welded end-to-end along the protruding parts. The holes in the perforated plates are formed by stamping, or by gas, plasma or laser cutting. Perforated plates are attached to the external (external) faces of the flanges of the developed I-beams by welding, rivets or bolts.

As a result of replacing continuous rolling profiles in a two-branch rack with perforated profiles, the section height increases, and therefore, the rigidity and bearing capacity of the rack are increased without additional material consumption. The layout of an equidistant rack becomes possible.

Claims (1)

A perforated two-branch rack containing branches and two perforated steel plates combined into one section of a closed profile by welding, rivets or bolts, characterized in that the branches of the rack are made of perforated I-beams obtained by cutting along a zigzag line along the wall of continuous I-beams and subsequent welding butt on the ledges of the formed parts.