Classification and structure of transmission line towers

Transmission line towers are generally divided into five types according to their shapes: wine glass type, cat head type, upper type, dry type and barrel type. According to the purpose, there are: towers, straight towers, corner towers, and transposition towers. Replace the conductor phase position tower), terminal tower and spanning tower.

The structural characteristics of the transmission line tower are that the various tower types are space truss structures, and the rods are mainly composed of single equilateral angle steel or combined angle steel. The materials generally use two kinds of Q235 (A3F) and Q345 (16Mn), and the joints between the rods are connected. The thick bolts are connected by bolts. The whole tower is composed of angle steel, connecting steel plates and bolts. Individual parts such as tower feet are welded into a single piece by several steel plates. Therefore, hot-dip galvanizing anti-corrosion, transportation and construction are extremely erected. Convenience. For the tower with a height of 60m or less, a nail is placed on one of the main materials of the tower to facilitate the construction workers to climb the tower.

The whole tower is mainly composed of three parts: the tower head, the tower body and the tower leg. If it is a pull tower, it also adds a wire drawing part.

Tower head

The section from the tower leg to the upper tower changes sharply (the fold line appears). The above part is the tower head. If there is no sharp change in the section, the lower part of the lower cross arm is the tower head.

Tower leg

The first section of the tower above the base is called the tower leg.

Tower body

The part between the tower leg and the tower is called the tower body.