ACCUMULATING PORTAL CONVEYOR

摘要

An accumulating portal conveyor comprises a conveyor belt, a frame for supporting and guiding the belt, which frame includes a first helical path and a second helical path spaced from the first helical path, a bridging path and a return path. Under operating conditions the belt successively follows the first helical path upwardly, the bridging path, the second helical path downwardly and the return path, and such that in transverse direction of an upright plane through central centerlines of the first and second helical paths. The bridging path includes a static part having a fixed position with respect to the helical paths and a dynamic portion displaceable in transverse direction of the upright plane to change the path length of the belt. At least a portion of the return path is displaceable for compensating the change of the path length of the belt at the bridging path.

主权项

1. An accumulating portal conveyor, comprising:
a drivable endless conveyor belt), a frame configured to support and guide the conveyor belt, which frame is provided with a first helical path and a second helical path which lies at a distance from the first helical path, a bridging path and a return path, which are arranged such that under operating conditions the conveyor belt successively follows the first helical path upwardly, the bridging path, the second helical path downwardly and the return path, and such that in a transverse direction of an upright plane through central centerlines of the first and second helical path a free passage below the bridging path and between the helical paths is provided, wherein the bridging path is provided with a static part having a fixed position with respect to the helical paths and a dynamic portion which is displaceable in a transverse direction of the upright plane so as to be able to change the path length of the conveyor belt between the helical paths, and wherein at least a portion of the return path is displaceable with respect to the helical paths for compensating the change of the path length of the conveyor belt at the bridging path.