Roadbed stone crushing equipment mounting and lifting device

The invention discloses a roadbed stone crushing equipment installing and lifting device which comprises front and back symmetrical fixing plates, the fixing plates are fixed to a crane extending suspension arm, a retracting and releasing device is arranged between the fixing plates, the retracting and releasing device is provided with a first pull rope and a second pull rope, and the retracting and releasing device drives the first pull rope and the second pull rope to move; a groove is formed in the lower side of the cylinder; a round rod is fixed in the groove; a rotating rod is rotationally arranged on the round rod; an adjusting rope is fixed at the upper end of the rotating rod; the first rotating shaft drives the first pull rope and the second pull rope to slide through the winding and unwinding device, so that the adjusting device drives the rotating rod to change the rotating direction, and the adjusting rope pulls the lower end of the lifting rope to slide upwards or downwards; a plurality of hangin