The power angle steel tower is an important transmission line support structure, and its assembly quality is directly related to the safe and stable operation of the transmission line. This article will introduce the assembly process of power angle steel tower in detail, in order to provide reference and help for relevant practitioners.
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1. Preparation before assembly.
Before starting the assembly, we need to make the following preparations:
1.Check whether the foundation embedded parts meet the design requirements to ensure that their position, elevation and levelness meet the specifications
2.Check whether the specifications, models and quantities of the angle steel tower are consistent with the design, and check whether the angle steel tower is deformed and damaged
3.Prepare the tools, materials and safety protective equipment required for assembly, such as wrenches, hammers, wire ropes, safety belts, etc.;
4.Formulate detailed assembly plans and safety technical measures, and make technical disclosures.
Second, the assembly steps.
The assembly steps of the power angle steel tower are as follows:
1.Basic installation.
According to the position of the foundation embedded parts, the foundation steel plate is placed on the embedded parts, and the levelness and elevation are adjusted to ensure that the foundation steel plate is stable. Then, weld the steel plate and embedded parts according to the design requirements to ensure that the welding quality meets the requirements of the specification.
2.Tower foot installation.
The base of the tower is placed on the foundation, the position is adjusted so that it is aligned with the base steel plate, and then welded. Pay attention to ensure the verticality and horizontality of the tower foot to prevent deformation caused by improper welding.
3.Cross arm mounting.
The cross arm is the main bearing structure of the angle steel tower, and its installation quality is directly related to the safety of the transmission line. According to the design requirements, the cross arm is installed on the tower foot, the position is adjusted so that it is aligned with the tower foot, and then welded. When welding, special attention should be paid to the stability of the cross arm to prevent the cross arm from deforming or falling off due to improper welding.
4.Ladder installation.
The ladder is a passage for maintenance personnel to go up and down the angle steel tower, and its installation position should meet the design requirements and be firmly connected with the tower body. During installation, it is necessary to ensure the perpendicularity and parallelism of the ladder, so that the maintenance personnel can safely get on and off the angle steel tower.
5.Pull cord installation.
Pull wire is one of the important supporting structures of the angle steel tower, and its installation quality is directly related to the stability of the angle steel tower. According to the design requirements, install the cable in the corresponding position, and adjust its length and angle to make it meet the design requirements. The fixation of the cable should be firm and reliable to prevent the cable from falling off or loosening due to poor fixation.
6.Accessory installation.
Accessories include shockproof hammers, deflector wires, insulators, etc., and their installation positions and quantities should meet the design requirements. When installing, it is necessary to ensure the firmness and reliability of the accessories, and prevent the accessories from falling off or loosening due to improper installation.
3. Assembly quality inspection and acceptance.
After the assembly is completed, we need to carry out the following quality inspection and acceptance work:
1.Check whether the overall structure of the angle steel tower meets the design requirements, and whether the connection of each component is firm and reliable
2.Detect whether the verticality and horizontality of the angle steel tower meet the requirements of the code;
3.Check whether the welding quality meets the requirements of the specification, and repair the unqualified welding parts
4.Inspect the attachment to ensure its robustness and reliability;
5.Carry out necessary electrical tests, such as insulation resistance test, withstand voltage test, etc., to ensure that the electrical performance of the angle steel tower meets the requirements.
4. Safety precautions.
During the assembly process of the power angle steel tower, we need to pay special attention to the following safety matters:
1.Comply with relevant safety operating procedures and use tools and equipment correctly;
2.In the assembly process, attention should be paid to preventing the slipping and dumping of the components of the angle steel tower, so as to avoid the loss of personnel and property.