Cross arm
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Cross arm
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Cross arm
Classification of crossarm
The transverse arm can be classified in a variety of ways according to different standards:
Classification by use: can be divided into straight arm, Angle arm and tensile arm. The linear cross arm is mainly used for the linear pole tower to bear the vertical and horizontal load of the wire; The Angle cross arm is used for the Angle pole tower, in addition to bearing the vertical and horizontal load of the wire, but also need to bear a large unilateral wire tension; Tensile cross arm is used for poles and towers that need to withstand greater tension.
According to material classification: can be divided into iron cross arm, porcelain cross arm, synthetic insulation cross arm and so on. Different materials have different characteristics and application range, such as iron cross arm strength is high but easy to corrosion, porcelain cross arm insulation performance is good but fragile.
The installation of cross arm
The installation position and method of the crossarm have an important influence on its performance. In general, the cross arm should be installed 300mm from the top of the rod to ensure its stability and safety. For the straight pole tower, the single cross arm should be installed on the electric side; For the corner tower, the terminal tower and the branch tower, the cross arm should be installed on the side of the cable. In addition, during the installation process, it is also necessary to pay attention to the smoothness of the crossarm to avoid skew or skew.
The material and production of cross arm
The materials of the cross arm are various, common iron, wood, ceramic and insulating materials. Among them, the iron cross arm is widely used because of its high strength and strong bearing capacity. Porcelain cross arm is suitable for special occasions because of its good insulation performance. In the production process, it is necessary to choose the appropriate material and specifications according to the actual needs, and carry out the corresponding anti-corrosion and anti-rust treatment to ensure its service life and safety.
Maintenance and overhaul of crossarm
As an important part of power facilities, the maintenance and overhaul of cross arm are equally important. During daily operation, check and maintain the crossarm regularly to discover and handle potential safety hazards in a timely manner. Damaged or aging crossarm parts should be replaced in time to ensure the normal operation and safety of power facilities.
To sum up, the cross arm plays a crucial role in power facilities. Through reasonable classification, installation, production and maintenance, the performance of the crossarm can be fully brought into play and the safe and stable operation of power facilities can be guaranteed.
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