The invention discloses a transferring device of a construction machinery. The device comprises a fixing base, a traction block, a connecting base, a guide groove I, a screw rod I, a movable seat I, an end cover I, a hand wheel I, a spline shaft I, a transmission gear I, a connection gear I, a transmission shaft I, a
coupling I, a walking device I, a supporting plate I, a driven gear, a driving gear, a motor and the like. The transferring device of the construction machinery has the advantages of being reasonable and simple in structure, low in production cost, convenient to install and complete in function; the hand wheel I or a hand wheel II can drive the walking device I and a walking device II to move inwards or outwards, so that the requirements for transferring
mechanical equipment with different sizes and widths can be met; the supporting plate I and a supporting plate II are positioned below the corresponding walking device, so that the center of gravity during the transferring of the
mechanical equipment is reduced, and the stability and the reliability during transferring are ensured; and the height of the supporting plates can be adjusted according to a motor arranged in the transferring device so as to meet the requirement of loading and fixing the
mechanical equipment and the use effect is improved.