RU53344U1 - LIGHTED ANTENNA SUPPORT FOR INSTALLATION ON ROOFS OF PUBLIC AND INDUSTRIAL BUILDINGS - Google Patents

Abstract

The utility model relates to antenna mounts for installing them on the roofs of public and industrial buildings, on which it places antennas and radio equipment for a cellular radiotelephone communication network, for example, Beeline GSM 900/1800. The essence of the technical solution is as follows. The proposed light antenna support, as well as existing structures of the supports contains, assembled into a single structure, racks, struts, and braces, but unlike the known ones, is made of collapsible from several sections and contains: a lower support section made in the form of a truncated trihedral pyramid . And on this section, several sections are fixed one on top of the other, respectively fastened together, and each of them is made in the form of a trihedral prism, for example, five meters long. At the same time, the howl sections are fastened together by means of flange connections, and the flanges are fixed (welded), respectively, on the racks of each section from two sides. On each face of the prismatic sections between the struts, racks are fixed crosswise metal braces (rods) with a diameter of, for example, 12 mm, working in the structure only for tension by the principle of the thread and are simultaneously a guard for a stepladder located and fixed on braces on one of the faces inside prismatic sections. Depending on the wind region of the installation of the support and its total height, the first lower prismatic section mounted on the support section is structurally reinforced in strength with reinforced uprights. In areas with increased wind load on the supports - the entire support can be installed on an additional collapsible support section with an increased support base on a foundation base. A folding platform is installed inside the prismatic sections in the service areas for antennas and radio equipment. Over the entire height of the support from the outside, on one of the faces on the struts of each section of the support, the designs of the simplest devices for attaching to them the power cables of the radio equipment mounted on the support are made.

Description

The utility model relates to antenna supports for installing them on the roofs of public and industrial buildings, and also antennas and radio equipment for a cellular radiotelephone communication network, for example, Beeline GSM 900/1800, are placed on the support.

The famous "Pyramidal trellised tower" according to the description of the invention to the patent of the Russian Federation No. 2165505, IPC class 7 E 04 H 12/08, published on 04/20/2001 in B No. 12 (1).

In the design of this tower, the technical result of the invention is to double the unification of the tower belts and the nodes of the interface of its lattice elements with belts. This lattice tower is made in the form of a pyramid containing belts, lattice elements-braces, struts forming flat trapezoidal panels.

A feature of this technical solution is that in panels of the same height, pairs of panels with equal lengths of belt sections and pairs of geometrically similar panels are made.

The disadvantage of this pyramidal lattice tower is its large metal consumption and, accordingly, a large weight.

Also known are the "Communication Tower" with a height of 26 to 120 meters. See the brochure of OJSC Omsk Metal Construction Plant, attached on sheet 1 to the application materials (2).

This tower has a tetrahedral shape and is made of struts, struts and braces. The disadvantage of this communication tower is that it is designed for installation on the ground on the foundation supports. In addition, this communication tower is very metal-intensive and has a lot of weight, as it is made of steel profile angle and T-bars and is a single structure, which makes it difficult to transport to the installation site.

The goal in creating the proposed support is to develop and

creation of the construction of a lightweight antenna support, designed for installation on the roofs of public and industrial buildings, which would have significantly less weight compared to existing analog designs. The goal is also to significantly improve and facilitate the conditions of transportation of the support to the installation site and its installation.

The specified goal and technical result are achieved as follows.

The proposed lightweight antenna support, like existing support structures, contains, assembled in a single structure, racks, struts and braces, but unlike the known ones, it is made of collapsible from several sections and contains: a lower supporting section made in the form of a truncated trihedral pyramid. And on this section, several sections are fixed one on top of the other, respectively fastened together, and each of them is made in the form of a trihedral prism, for example, five meters long.

At the same time, all sections are fastened together by means of flange connections, and flanges are fixed (welded), respectively, on the racks of each section from two sides. On each face of the prismatic sections between the struts, racks are fixed crosswise metal braces (rods) with a diameter of, for example, 12 mm, working in the structure only for tension by the principle of the thread and are also a guard for a stepladder located and fixed on braces on one of the faces inside prismatic sections.

Depending on the wind region of the installation of the support and its total height, the first lower prismatic section mounted on the support section is structurally reinforced in strength with reinforced uprights.

In areas with increased wind load on the support - the entire support can be installed on an additional collapsible support section about the increased support base on a foundation base.

A folding platform is installed inside the prismatic sections in the service areas for antennas and radio equipment. Over the entire height of the support from the outside, on one of the faces on the struts of each section of the support, the designs of the simplest devices for attaching to them the power cables of the radio equipment mounted on the support are made.

As a close analogue of the proposed lightweight antenna support, you can take the "Communication Tower" at the source of scientific and technical information (2).

The list of figures in the drawings.

Figure 1 shows the proposed lightweight antenna mount for installation on the roofs of public and industrial buildings, a view of the front face (panels), M 1: 100.

Figure 2 shows one trihedral section, a view of the front face, M 1:25.

Figure 3 shows a section along BB of figure 2, M 1: 12.5.

In Fig.4 shows a section aa of Fig 1, M 1: 12.5.

Figure 5 shows an additional collapsible support section with an enlarged support base on a foundation base, M 1:50.

The proposed lightweight antenna mount contains the following components and parts.

The equipment of a cellular radiotelephone communication network is usually placed at an optimum total height of 40-50 meters on the roofs of public and industrial buildings. Given the height of the buildings, for example, 20-25 meters, respectively, and the most optimal height of the antenna mount itself is 20-25 meters. But under specific given conditions, antenna supports can be made in the heights of 11, 16, 21, 26, 31 meters or more.

The collapsible design allows you to assemble the support of the required height, with an atom, taking into account the zone of different wind load on the support, the unification of sections and the entire support is also achieved. And if it becomes necessary to expand the coverage area of a given radiotelephone communication point and increase the support height, then one or more prismatic sections can be installed on an existing support, provided that there is a sufficient margin of safety for the support.

Figure 1 shows the construction of a collapsible lightweight antenna support with a height of 21 m (view of the front face), while the height of the support section 1, made in the form of a truncated trihedral pyramid is 6 m, and the height of each section 2, made in the form of a trihedral prism is 5 m.

A lightning rod 3 is fixed on the upper section 2. On the inner side of the prismatic sections on one of the faces on the spacers, in FIGS. 1, 2 and 3, a step ladder 4 is fixed on the front face, and on the inside of the support section 1, the step ladder has

also a fence 5.

On the outside of one of the faces of each section 1 and 2, the simplest constructions of devices 6 are attached (Fig. 3), intended for attaching to them the power cables of the radio equipment mounted on the support.

The supporting section 1 (Figs. 1, 3 and 4) is supported and mounted on a foundation base through three flanges 7, fastened (welded) to the ends of the uprights 8 and located at the corners of an equilateral triangle at the base of the section with a side length of 2500 mm.

The foundation of the entire support is fixedly mounted on the roof of the building.

In the proposed antenna support, in the support section 1, the posts 8 are made of a steel pipe with a diameter of 83 × 4 mm, and the struts 9 are located at a distance of 1000 mm from each other and made of a pipe with a diameter of 38 × 4 mm, and the braces are made of a pipe with a diameter of 32 × 3 mm

Sections 2 (Figs. 1, 2, and 3) are made in the form of a triangular equilateral prism with a side width of 1000 mm, the racks 8 for the first lower prismatic section are made of a steel pipe with a diameter of 83 × 4 mm, that is, it is structurally reinforced with strength reinforced racks, taking into account the total height of the support, as well as depending on the wind area and wind load on the support.

And for the two upper sections 2 racks 8 are made of pipes with a diameter of 57 × 4 mm. For all three sections 2, the spacers 9 are made of a pipe with a diameter of 32 × 3 mm m, they are located at a distance of 1000 mm from each other.

The braces 10 are located between the spacers 9 and are fixed (welded) by the ends on the uprights 8 crosswise and are made of steel rods with a diameter of, for example, 12 mm and are simultaneously a guard for a stepladder 4 located and fixed on the spacers 9 on one, for example, front face inside the prismatic sections 2. A stepladder 4 is attached to the struts 9 by means of coupling clamps 11 (Fig. 3).

The braces 10 are fastened to each other in places of intersection with wire clips 12 about the possibility of displacement relative to each other with a slight deformation of sections 2 from the wind load and work in the structure only in tension by the principle of the thread, see the book "Calculation of steel structures", authors I. M. Likhtarnikov et al., Ed. "Alarm clock". Kiev, 1984, from 245-257, as well as SNiP II-23-81 "Steel structures.

On each section 1 and 2, at the ends of the uprights 8, steel flanges 7 are welded (Figs. 1, 2, 3, 4 and 5), designed for reliable fastening with bolts with nuts and locknuts, all four sections into a single antenna support structure.

Inside section 2 (figure 3) on hinges 13, mounted on a spacer 9 in the service areas of antennas and radio equipment, a folding service platform 14 is installed.

On the very top section 2 there are several brackets designed for mounting (placing) antennas and radio equipment on them.

When installing the proposed lightweight antenna support in areas with increased wind load, an additional collapsible support section 15 is provided and made, also having the shape of a truncated trihedral pyramid with an enlarged support base, for example, between three support flanges located at the corners of an equilateral triangle with a side length of 3750 mm

This support section consists of three parts, and between them they are fastened by means of three flange connections 16. This support section can be installed both on the roof of the building and on the ground.

To install the proposed antenna support on a foundation foundation, mounted on the roof of the building, all four sections 1 and 2, and, if necessary, section 15 in an unassembled form can be loaded into a truck body, for example, KAMAZ, and delivered to the installation site.

Then, in succession, on the roof of the building, on the foundation foundation, support section 1 (or support section 15) is strengthened, and three sections 2 are successively strengthened on it via flange connections. After installing the entire antenna support, appropriate radio equipment intended for the cellular radiotelephone communication network is placed on it.

The design of the proposed welded collapsible lightweight antenna support is based on calculations on the strength of the main components and parts, as well as calculation on the minimum deviation from the vertical axis of the upper point of the antenna support at maximum wind load on the support, as well as on endurance.

The proposed design is also based on the requirements and regulations of the relevant GOSTs and SNiPs. presented to the designs of antenna supports.

The total weight of the entire proposed lightweight antenna mount is

about 1400 kg, including the support section 1-475 kg, and the weight of each prismatic section 2-300 kg. This is almost 3.5-4 times less than the weight of the analogue - communication tower with the same height of 21 m. The weight of the additional collapsible support section 15 is 625 kg.

The proposed lightweight antenna mount was made in September 2005 in Omsk and is installed on the roof of a public building at an altitude of 22 meters, has a low total weight and minimal windage, and has been successfully operated.

Unassembled, it is convenient for transportation both in weight and overall dimensions. Literally in one truck it can also be delivered over long distances up to 1000 km or more.

Literature:

1. "Pyramidal lattice tower" according to the description of the invention to the patent of the Russian Federation No. 2165505, IPC class 7 E 04 H 12/08, published on April 20, 2001 in B No. 12.

2. “Communication tower” with a height of 26 to 120 m, see the advertising brochure of Omsk Steel Plant OJSC, attached on 1 sheet.

Claims (5)

1. A lightweight antenna mount for installation on the roofs of public and industrial buildings, comprising racks, struts and braces assembled into a single structure, characterized in that the support is collapsible from several sections and contains a lower support section made in the form of a truncated trihedral pyramid; mounted on the lower support section and, accordingly, one on the other several sections, and each of them is made in the form of a trihedral prism, at least five meters long, while all sections are fastened together by means of flange connections, and the flanges are fixed on the racks of each section ; metal braces crosswise mounted on racks between struts on each face of the prismatic sections with a diameter of at least 12 mm, working in a tensile structure only on the principle of a thread and simultaneously being a guard for a step ladder located and fixed on braces on one of the faces inside the prismatic sections . 2. The lightweight antenna mount according to claim 1, characterized in that the first lower prismatic section mounted on the support section, depending on the wind region of installation of the support, as well as the total height of the support, is structurally reinforced in strength with reinforced uprights. 3. The lightweight antenna support according to claim 1, characterized in that in areas with increased wind load on the support, the entire support is mounted on an additional collapsible support section having an increased support base on a foundation base. 4. The lightweight antenna mount according to claim 1, characterized in that a folding platform is installed inside the prismatic sections at the radio equipment service points. 5. The lightweight antenna mount according to claim 1, characterized in that on the outside on one of the faces along the entire height of the mount on the struts of each section, the structures of the simplest devices for attaching to them the power cables of the radio equipment mounted on the mount are made.