Antenna supports

Antenna supports are designed for use in radio relay communication lines. The steel structures of the supports are a spatial rod shape in the form of a regular tetrahedral pyramid with a prismatic upper part. Structurally, the tower shaft consists of pyramidal sections 10 m long and a prismatic stack with sections of 5 m each. The elements of the sections are connected by bolts. Belts of adjacent sections are interconnected by flanges on high-strength bolts.

Inside the tower there is a staircase with a basket of fencing and with rest areas in each section.

Antenna tower specifications

General description.

Antenna supports are used in various communication lines.

The antenna support is a free-standing spatial rod structure in the form of a regular pyramid, the upper part of which is prismatic. They can be 3-sided and 4-sided. Antenna towers are designed in six sizes - 30, 40, 50, 60, 70 and 80 meters using sections 10 meters high each.

At the same time, supports with a height of 40 and 50 meters are formed by adding 10-meter sections to a support with a height of 30 meters, and supports with a height of 70 and 80 meters - by adding sections to a support with a height of 60 meters.

Installation conditions.

Scope - the entire territory of RUSSIA, regardless of regions and climatic conditions. Antenna supports are used even in those regions where the air temperature does not rise above -40°C. Can be used when exposed to sand, moisture, dust, frost, dew, snow, solar radiation. It is possible to manufacture antenna supports for areas with an estimated outdoor temperature below -40 ° C (made of steel S-345-3, S-345-4).

Package.

All of the above antenna mounts include:

- structural elements necessary for the installation of cable facilities, lighting and antenna equipment;

- swivel bracket on 4 fixed positions with a load capacity of up to 300 kg, designed to lift tools, cables, antenna equipment during operation and repair;

- climbing ladders required for antenna maintenance. The design provides for a recreation area, which is located every 10 meters;

- platforms for equipment maintenance, made taking into account the work of two installers on the main and one installer on a simplified platform.

Assembly.

Removable shoes are provided in each standard size of supports for pairing the lower sections with foundations. Taking into account the formation of each type of supports by adding sections, the lower braces in the corresponding sections are made as support braces with fastening on two bolts.

The sections are connected to each other by means of double-sided overlays; in the sections themselves, a diagonal lattice with combined nodes is adopted. In order to ensure the geometric invariability of the cross section, the structures of the supports are diaphragmed (diaphragms are part of the sections) with spacer elements placed along the sides of the shaft. Bearing elements of the support shaft (struts, braces, diaphragms) of the structure are made of angle and sheet steel.

All mounting connections are made on bolts according to GOST 7798-70* strength class 4.6, nuts according to GOST 5915-70* strength class 4 or 5, round washers according to GOST 11371-78* and spring washers according to GOST 6402-70*.

Anti-corrosion protection is performed by the following types of coating: primer GF-021 (1 layer) + alternating red and white stripes with PF-115 enamel (2 layers).