Stay rods are essential components in overhead line construction, designed to provide mechanical support and maintain the stability of poles or towers under tension. They are typically used in conjunction with stay wires to counterbalance the pulling force of conductors. A hot-dip galvanized stay rod with stay bow is commonly used because galvanization offers superior corrosion resistance, ensuring durability and long-term performance even in harsh outdoor conditions. The stay bow serves as the connecting element between the stay wire and the ground anchor, guaranteeing that the wire is firmly fixed and the overall structure remains stable. There are two main types of stay rods used in transmission and distribution line projects: 1. Bow Type Stay Rod This is one of the most widely used designs, especially for medium- and low-voltage distribution lines. A complete bow type stay assembly generally includes: Stay Rod – The main rod driven into the ground or fixed to the anchor. Stay Plate – A plate that provides stability by distributing the load into the soil. Stay Bow – A U-shaped bow that connects the stay wire to the rod. Stay Thimble – Protects the stay wire loop from abrasion and increases its service life. Advantages: Simple and reliable design. Easy installation and maintenance. Suitable for a wide range of soil and environmental conditions. 2. Turnbuckle Type Stay Rod This type is designed for applications requiring adjustable tension. The assembly typically consists of: Stay Rod – The primary anchor element fixed in the ground. Turnbuckle – Provides the ability to adjust the stay wire tension, ensuring precise alignment of poles or towers. Eye Bolt – Facilitates secure connection between the turnbuckle and the stay wire. Stay Thimble – Protects the looped stay wire from wear. In most cases, additional accessories such as stay guy grips, stay guy wires, and stay insulators are required to complete the system. Advantages: Allows fine-tuning of stay wire tension. Ideal for heavy-duty applications or locations where precise pole alignment is critical. Provides greater flexibility in installation and adjustment. Conclusion Both bow type stay rods and turnbuckle type stay rods play a vital role in ensuring the stability of overhead line systems. The selection depends on project requirements: Bow type is best for simple, cost-effective, and durable installations. Turnbuckle type is preferred when adjustability and precise tension control are essential. By using high-quality hot-dip galvanized materials, both types can achieve excellent corrosion resistance and long service life, ensuring the safe and reliable operation of power transmission and distribution networks.
