| 摘要 |
A spiral conveyor for positively driving a conveyor belt along a helical path. The spiral conveyor includes a rotating cylindrical tower with parallel drive members extending from the bottom to the top of the tower on its periphery. Each drive member includes an outwardly protruding ridge that varies in height from the bottom to the top of the tower. The conveyor belt has a series of rows (92) of belt modules (60) having a top side and a bottom side and hingedly linked together between consecutive rows (92) along hinge joints which have play in the conveying direction to allow the rows (92) to collapse together at a side edge when the side edge is at the inside of a turn in a conveying path. The conveyor belt has teeth (62) with guide surfaces (78, 79) at the side edge of the belt. The teeth (62) guide the drive members between belt rows (92) into driving engagement with drive faces at the inside edge of the belt. |
