BRPI1104401A2 - base for anchoring an antenna mounting post and method for mounting a communications structure - Google Patents

Abstract

BASE FOR ANCHORING AN ANTENNA COLUMN AND METHOD FOR ASSEMBLYING A COMMUNICATION STRUCTURE - A metal structure that solves the location of radiating systems and equipment without relaying a civil work is described. The system comprises a tripod-shaped metal base (12) which rests on the ground and is fixed to it by means of quick anchors (17). On this base a single-pole (11) and platform (23) are mounted manually for the installation of communications equipment (E). The parts are relatively light in weight and short in length so that they can be transported on pickup trucks, translatable by technical personnel without the need for a crane, manually assembled without the use of cranes.

Description

"BASE FOR ANCHORING AN ANTENNA MOUNT COLUMN AND METHOD FOR MOUNTING A COMMUNICATION STRUCTURE"

FIELD OF INVENTION

The present invention is within the scope of the support of radiating systems (antennas and coaxials) and communications equipment applicable to telecommunications and in particular to wireless cellular telephony.

Given the technical need to mount the antennas at high heights, the necessary infrastructure includes column-like structures to house the antennas and their immediate accessory equipment. Such structures are erected on free land which, in many cases, especially in large cities and towns, is part of a lease that is leased, however in other cases, especially in rural areas, they are in areas far from some urbanized area. In both cases, although for different reasons, it is very convenient to reduce the time of the work.

DESCRIPTION OF TECHNICAL STATE

As a space for communications equipment, there are conventionally the following options:

- shelters resting on a slab of

concrete;

- concrete slabs and equipment resistant to

bad weather.

As a means to house the radiating systems, A (almost exclusively metallic) antenna support structures are used, where the different known schematic topologies are shown in figures IA, IB and 1C, respectively:

- Cable-stayed masts 11A: These are small cross-sectioned structures, which are cable-stayed in height by means of R-bars that connect to ground anchors 12A (Fig. IA). They need a surface T that is important for their installation, which makes them inconvenient for densely populated areas, but on the other hand, great heights and large carrying capacity can be achieved, and they are proportionally economical structures compared to other areas. solutions, factors that make them preferable for use in rural areas.

Self-supporting towers 11B: These are considerable section reticular structures that attach to their foundation 12B without the need for support (fig. 1B). They require a discrete T surface for their installation and can achieve more limited heights and considerable load capacity. They are usually installed in suburban areas.

- Monopostes IlC: These are circular section structures that attach to their 12C foundation without

need for stationing (fig. 1C). They have an even smaller T-surface for their installation, which makes them generally convenient for urban areas, but they have limitations because higher heights cannot be achieved and they have little carrying capacity.

Traditionally, to install a structure to support antennas, its foundations (civil works) are made according to its engineering:

- a well is constructed either manually or with

bulldozer;

- Armor and form are placed in the well; and

- the bases are filled with concrete.

Once the concrete drying time is expected, the foundations are covered, the excess earth is removed and the structure can be assembled which, in the case of masts IlA and towers 11B, can be performed manually and, in the case of monoposts. 11C, must be made with crane.

In addition to the cost of equipment and labor, especially for urban and suburban facilities, to some degree, the arrangement of machinery and construction time - typically between two and three weeks, for a 25-meter structure. height - supposes a social impact for those living in that area and in the neighborhood. In urban areas, the land is often the bottom of a plot where there is a dwelling that prevents or hinders access to machinery.

PROBLEMS TO SOLVE The problems related to this invention are: (a) the need for growing telephone networks, and especially for mobile telephony, (b) making it increasingly difficult to find large locations with access to machinery (especially in urban areas), and (c) excessive workloads and lead times.

It is also an object of the present invention to avoid having to carry out a civil work, not relying on the use of cranes for assembly, reducing installation time and lowering the social impact (annoyance to neighbors, roadblocks, etc.) of the installation.

SUMMARY OF THE INVENTION

The present invention consists of a metal structure that resolves the location of irradiating systems and equipment without the need for civil works. The system consists of a metal base that rests on the ground and fastens to it by means of quick anchors. On this base are mounted manually the column and platforms for the installation of communications equipment. The column is conveniently adapted to the

monoposte topology.

The system is designed with no heavy or long parts to be transportable on small vehicles (pickup truck) and transferable by technical personnel without the use of cranes. Likewise, lightweight parts make it possible to manually assemble without the need for a crane.

BRIEF DESCRIPTION OF DRAWINGS

For the sake of clarity and understanding of the present invention, it has been illustrated in various figures representing a preferred embodiment, by way of example only, where:

Figures IA, IB and IC are side views representing the different types of conventionally used columns described above. Figure 2 is a perspective view of a

single-post column with an installation base in accordance with the present invention. Figure 3 is an enlarged view of the base of the column.

of figure 2.

Finally, Figure 4 is a plan view of the base of Figures 2 and 3.

DETAILED DESCRIPTION OF THE INVENTION

Figure 2 shows a monoposte column 11 accompanying the monoposte topology and which is erected manually, stepwise, on a metal tripod 12 which functions as a stable support base. The tripod 12 comprises a central structure or core 13, formed by welded plates for fixing single-spindle 11, 22 meters, and three radial structures of tubular profiles 14 with 2 meters each, formed by respective plates boxes with adequate resistance (alternatively , double T-profiles or other structural elements capable of supporting flexion may be employed. These tubular profiles 14 are screwed to the central structure 13.

On top 16 of monoposte 11 are mounted one or

more antennas A.

These parts 11, 13, 14 are relatively light in weight so that they can be transported to the laying site and manually assembled without the need for a crane.

Figures 3 and 4 show the radial structure of the tripod 12 in more detail. Column 11 is dimensioned according to its height, installation zones and antennas to be supported according to CIRSOC regulations, and profiles 14 are dimensioned according to the reaction caused by the way column 11 is supported, considering the brackets are set into the column. For a 22 meter single-pole 11 in the city of Buenos Aires, tubular profiles 14 are provided formed by a 500 mm χ 160 mm and 6.4 mm thick sheet metal box.

On the distal exteriors of each of the three radial structures 14 are placed two quick anchors 17 fixed to the profiles 14 by clamps 19 to support the traction of the assembly, supported on a feet in the shape of precast concrete slabs 18 with 0 , 90 m χ 0.90 m, fixed by screws to the radial profiles 14, to support the compression of the joint. The anchor system is provided by the company Anclajes & Servicios S.R.L. (Buenos Aires) and can be viewed on the website:

HTTP://www.anclajesyservicios.com.ar/imag/html/su

link.html

The design of anchors 17 has a redundancy of 1 + 1 (100%).

Optionally, tensioning bars 21 may be added by joining 22 the monoposte 11 with the radial profiles 14 to provide greater stability, although such bars are not indispensable according to the structural calculation of the base.

At base 12 is constructed a platform made of UPN14 profile beams 23, which rest on two of the profiles 14, and on the platform is placed the communications equipment E, which is connected with antennas A by means of conventional coaxial cables that pass through monoposte 11 (so they are not apparent) to improve visual impact.

There are also different ascent systems for maintenance access with greater or lesser visual impact:

a) traditional staircase;

b) independent steps; or

c) winch system to lift the service technician.

ADVANTAGES ABOUT A TRADITIONAL STRUCTURE

- The same heights and load capacities as a traditional single-seater are achieved;

It does not require civil work (wells, concrete, filling, removal of material from the remaining terrain, etc.) for foundation of the structure;

- It is installed with minimal soil preparation;

- Does not require transportation in semi trailer;

- Can be transported in pickup truck;

- Can be placed in narrow places such as

runners;

- Does not require crane for its assembly; - It is mounted manually;

- Does not require civil works to make foundation slabs for the equipment;

- Higher installation speed;

- Lower labor cost; and

- Lower social impact.

To illustrate the advantages of the present invention and the objectives achieved, the following table compares the construction times for a 22 meter high structure: Mast Self-supporting tower Monoposte Invention Site preparation 1 day 1 day 1 day 0 , 5 days Excavation, reinforcement, formwork and concrete 7 days 6 days 6 days 0 days Concrete cure 7 days 7 days 7 days 0 days Structure assembly 3 days 3 days 1 day * 1 day Total 18 days 17 days 15 days 1, 5 days

* with crane. The table shows a 90% or more reduction in

time, enabling the above mentioned objectives to be achieved.

Having been thus specially described and

Given the nature of the present invention, and the manner in which it is practiced in practice, various features of the device of the present invention are defined, as property and exclusive right, by the appended claims.

Claims (9)

1. "ANTENNA MOUNTING ANCHOR BASE", comprising a base for anchoring a column (11) for mounting telecommunications antennas and the like on the ground, characterized in that said base consists of a plurality of equidistant structures (14) projecting radially from a central structure in which said column (11) is placed with respective anchors (17) at the distal ends of said radial structures (14). A "base for anchoring a column" according to claim 1, characterized in that the plurality of radial structures (14) form a tripod. "BASE FOR ANCHORING A COLUMN" according to Claim 1 or 2, characterized in that the base is metallic. A "base for anchoring a column" according to claim 3, characterized in that each radial structure (14) comprises a metal profile. 5. "BASE ANCHOR BASE" according to Claim 4, characterized in that the metal profile (14) is a sheet metal box, a double T-profile or other structural element capable of withstanding flexion. 6. "BASE FOR ANCHORING A COLUMN" according to claim 1, 2, 3, 4 or 5, characterized in that the column (11) is of single-type type. "BASE FOR ANCHORING A COLUMN" according to claim 1, 2, 3, 4, 5 or 6, characterized in that the height of the column (11) is more than ten meters, possibly greater than twenty. meters. A "base for anchoring a column" according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that the antenna is mounted on the top (16) of the column (11), and It's for a type of cell phone. "METHOD FOR ASSEMBLING A COMMUNICATION STRUCTURE", such as telephony antennas, on a ground forming a base according to claims 1, 2, 3, 4, 5, 6, 7 or 8, comprising the steps of (a) disposing of a substantially flat surface ground, (b) having a central structure on said ground surface, (c) individually transporting and radially disposing on said ground surface, the plurality of frames (14) securing them to said central frame (d); securing to said ground the anchors (17) at the ends of said radial structures (14), (e) securing the column (11) to said central structure and erecting it over the latter structure, and (f) mounting at least one device of telecommunications at the top (16) of said column (11).