Design Principle Of Bolt-type Tension Clamp Extrusion Sleeve Anti-reverse Tooth

The toothed structure on the inner surface of the extrusion sleeve employs a reverse-direction design. The fastening teeth are arranged along the direction of bolt tightening, gripping the conductor surface under applied torque. The anti-reverse teeth are arranged in the opposite direction, tending to pull outwards when the conductor is under tension. bolted type strain clamp Under this tension, the anti-reverse teeth will embed deeper into the outer layer of the wire, and the resulting frictional resistance is proportional to the tension. This toothed configuration ensures stronger locking capability of the extrusion sleeve as the conductor is subjected to greater force.

Overhead lines experience thermal expansion and contraction due to temperature changes during operation. When the conductor contracts, it will generate a retraction force on dead end strain clamp. If the inside of the compression sleeve only has one-way fastening teeth, this reverse force may cause the conductor to undergo a slight displacement inside the sleeve. The presence of the anti-reverse teeth creates a mechanical locking structure; when the conductor attempts to move outwards, the tooth tips pierce the gaps between the aluminum strands or steel core. This unidirectional locking characteristic is similar to a ratchet mechanism, allowing the conductor to be pushed inwards during installation but preventing any form of reverse movement.

The bidirectional toothed pattern disperses the contact stress on the conductor surface over a larger area. The clamping teeth bear the main crimping force, while the anti-reverse teeth share part of the load when the conductor is under tension. bolted dead end clamp reduces the stress concentration at individual tooth tips through this tooth pattern combination, thereby reducing the possibility of fatigue damage to the conductor under long-term tension.