Why Do Bolt-type Tension Clamps Have Such High Clamping Force?

bolted type strain clamp is an important component that secures the wires using mechanical fastening. Its clamping force comes from the mechanical action between the bolt and the clamping body. As the bolt is gradually tightened, the screw generates tensile stress, and contact pressure is generated between the components. This force transmission mechanism is similar to the common bolt connection structure, which can convert the load into friction, thereby achieving a high clamping state.

The internal bolt connection design of dead end strain clamp allows the two bodies to move toward the position of the wire, so that the wire is placed into the groove and a stable mechanical fit is formed during the fastening process. As the bolts are twisted more, the gaps inside the clamping body gradually shrink, resulting in significant frictional contact between the conductor and the clamping body, which improves the overall load-bearing capacity under working conditions. This method shares similarities with simple mechanical clamps in terms of friction generation mechanism, but it places higher demands on structural strength in power transmission applications.

bolted dead end clamp clamps are typically manufactured from high-strength materials such as malleable cast iron or alloy steel. Their body and pressure plate geometry are engineered to improve stress uniformity and deformation resistance, maintaining a stable mechanical connection when the conductor is under tension.