The invention discloses a double-layer conveying
system. The double-layer conveying
system comprises a supporting part and a conveying trolley, and further comprises an
elevator part, wherein the supporting part is provided with an upper layer of guide rails and a lower layer of guide rails; a drive part capable of driving the conveying trolley to move along the upper layer of guide rails or the lower layer of guide rails is arranged on the supporting part; a positioning unit capable of positioning the conveying trolley which moves along the upper layer of guide rails on each
station is arranged on the supporting part; and the
elevator part can be used for switching the conveying trolley between the upper layer of guide rails and the lower layer of guide rails. During working, a workpiece which is needed to be conveyed on a
production line is placed onto the conveying trolley, and the drive part drives the conveying trolley to move along the upper layer of guide rails; when the workpiece reaches the corresponding
station, the positioning unit is used for positioning and locking the conveying trolley, and the positioning unit is combined with the
elevator part for switching the conveying trolley between the upper layer of guide rails and the lower layer of guide rails, so that long-distance, high-speed and high-precision conveying of the industrial manufacturing automatic
production line is completed; and with the design, the cost can be reduced, the performances are reliable, the mounting is convenient, and the conveying needs of the industrial automatic
production line are met.