How Do Bolt-type Tension Clamps Prevent Loose Threads? Here Are Some Anti-loosening Techniques

In the securing of high-altitude power cables, the biggest fear is that the bolted type strain clamp clamps will malfunction under high-frequency vibration. Once gaps appear in the threads, the tension balance of the entire line will be disrupted. To ensure the line remains stable, meticulous attention must be paid to the details of thread anti-loosening.

Common Physical Anti-Loosening Methods

Many frontline construction teams prefer to use mechanical intervention to prevent the screws from "self-releasing." This method is intuitive and easy to disassemble.

• Spring Washer Elastic Compensation: Utilizing the continuous tension generated when the washer is flattened, the frictional resistance between the threads is increased, offsetting some of the metal fatigue caused by environmental temperature differences.

• Cotter Pin Hard Locking: A pre-drilled hole is made at the end of the bolt, and a cotter pin is inserted to directly lock the nut in place. This method is very popular in areas with strong winds because it leaves no room for the nut to rotate.

• Double Nut Counter-Tightening: By having two nuts press against each other, a reverse tension zone is formed on the bolt, making the threads engage more tightly.

Friction and the Chemical Interaction of Materials

Beyond direct mechanical structures, many solutions now focus on improving the coefficient of friction.

The introduction of coating technology

Some high-specification dead end strain clamp fixtures are pre-coated with a layer of microcapsule anaerobic adhesive. When the nut is screwed in, the capsules rupture, and the adhesive rapidly solidifies in an oxygen-deficient environment. This adhesive film acts like an "invisible skin" welded onto the threads.

Fine-tuning of Thread Profile

By changing the thread angle or adding anti-loosening bevels, the nut, when subjected to radial force, generates a centripetal compressive force. This structural improvement allows the bolted dead end clamp to exhibit extremely strong self-locking ability when facing long-term oscillations.

This comprehensive protection, from physical to material aspects, is the real foundation for resolving the risk of loosening. After all, in power grid operation and maintenance, eliminating even one potential hazard can save a significant amount of subsequent maintenance costs.