Escalator driving spindle comprises a hollow shaft, the main shaft is mounted on the main shaft through a bearing, and the main shafts are respectively arranged on the large-diameter stepped sprockets of the hollow tube. The outer circumferential wall of the hollow tube is respectively provided with a large sprocket, the inner end is axially arranged on the annular step on the annular step surface, the outer circumferential wall of the hollow tube is welded on the large inner end step wheel, the annular step The annular side wall and the outer end of the big step wheel are provided with the end surface of the big step sprocket, the welding of the inner end surface is the contour end surface, and the edge of the end surface is the edge of the big sprocket. The escalator drive spindle simplifies the assembly process and effectively reduces assembly costs.
