It constructs to drive a plurality of favourable turns that drive that compress tightly a synchronous revolution

The utility model discloses an it constructs to drive a plurality of favourable turns that drive that compress tightly a synchronous revolution compresses tightly the piece and all is equipped with the pressure arm including pull rod, the top of each pull rod, and the lower part follow of each pull rod is equipped with down stopper and last stopper in supreme equal interval down, and all cup joint with a link activity lower part of each pull rod, and the link is located between the lower stopper and last stopper of each pull rod, driving the favourable turn and constructing including the drive plate, the drive plate is connected with the last stopper on each pull rod through the connecting piece respectively, and the drive plate motion drives each pull rod synchronous revolution. Structure more than adopting through the motion of push -and -pull drive plate, can drive a plurality of pull rod synchronous revolutions, and consequently clamping can be realized a plurality ofly waiting to process getting of beari