Automatic constant-speed tension control device for supporting strip

The utility model relates to an automatic constant-speed tension control device for a supporting strip, which belongs to the technical field of synchronous conveying equipment and comprises a supporting strip spreading mechanism, a supporting strip guide mechanism and a tension synchronizing mechanism used for tensioning the supporting strip. The upper portion of the clutch rotating shaft is provided with a supporting strip unfolding frame, and the lower portion of the clutch rotating shaft is provided with a magnetic powder clutch. The feeding speed of the supporting strip spreading frame can be kept synchronous with the rotating speed of the supporting strip winding pipe welding machine under the control of the magnetic powder clutch, and then the supporting strip can be tensioned by being matched with the supporting strip guide mechanism and the tension synchronizing mechanism used for tensioning the supporting strip. And it is better guaranteed that the rotating speed of the supporting strip pipe winding