A pulley tensioner

Abstract

The utility model provides a kind of pulley tensioner, it is related to transmission device field, including sliding rod, sliding frame, tensioner, drive assembly and rotation limiting piece;Tensioner can be rotatably fixed in the bottom of sliding frame;Drive assembly drives sliding frame to slide along the extension direction of sliding rod;Sliding rod is through and is provided with locking hole;Sliding frame is provided with locking waist hole;The screw rod of locking bolt is set in locking hole and locking waist hole;Rotation limiting piece is fixed with sliding frame;The bottom of rotation limiting piece is provided with limiting recess;Limiting plate is equipped on locking bolt;Limiting plate is fixed on the screw rod of locking bolt;Limiting plate brim and the groove bottom surface of limiting recess are in abutment;Locking nut is tightened on locking bolt.The utility model can solve the problem that nut is tightened on bolt in prior art, bolt rotates in hole and nut is difficult to tighten on bolt, increase the time cost required for installation, realize the difficulty of installation adjustment, reduce the time cost required for installation adjustment.

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