A spiral conveyor having a self-stacking conveyor belt positively driven on a helical path up or down a drive drum. Stacker supports at opposite sides of the belt support the tiers above. Locking structure on the outer stacker supports interlock consecutive tiers. Drive members on the drive drum have a belt entrance segment and a positive-drive segment. The positive-drive segment has ridges that engage the inner side of the belt without slip. The entrance segment provides a smooth reduction in drum diameter without drive ridges to multiple belt tiers entering the helical path.

A spiral conveyor having a self-stacking conveyor belt positively driven on a helical path up or down a drive drum. Stacker supports at opposite sides of the belt support the tiers above. Locking structure on the outer stacker supports interlock consecutive tiers. Drive members on the drive drum have a belt entrance segment and a positive-drive segment. The positive-drive segment has ridges that engage the inner side of the belt without slip. The entrance segment provides a smooth reduction in drum diameter without drive ridges to multiple belt tiers entering the helical path.

A low-profile, high-capacity elevator conveying system that is operably able to reduce spatial requirements for the elevating system to not less than about one third (⅓) of the overall lift height, and preferably having a height to base ratio in a range of between 4:1 to 8:1. The present invention also relates to a high capacity elevator conveying system which can elevate both fine and coarse materials through a range of between 300 μm and 300 mm, while limiting belt side travel to 150 mm maximum, or +/−75 mm as required to prevent edge damage to the conveyor belts.

A low-profile, high-capacity elevator conveying system that is operably able to reduce spatial requirements for the elevating system to not less than about one third (⅓) of the overall lift height, and preferably having a height to base ratio in a range of between 4:1 to 8:1. The present invention also relates to a high capacity elevator conveying system which can elevate both fine and coarse materials through a range of between 300 μm and 300 mm, while limiting belt side travel to 150 mm maximum, or +/−75 mm as required to prevent edge damage to the conveyor belts.

The belt conveyance device includes a plurality of rollers, a belt, a meandering correction part, and an adjustment part. The rollers are disposed at intervals each other and rotate around axes. The belt is disposed around the plurality of rollers and travels. The meandering correction part shifts one end portion in an axial direction of a tension roller included in the plurality of rollers in a radial direction within a predetermined range to correct a meandering of the belt. The adjustment part shifts the other end portion in the axial direction of the tension roller in the radial direction such that a position of the one end portion of the tension roller is variable under a state where the meandering of the belt is corrected.

The belt conveyance device includes a plurality of rollers, a belt, a meandering correction part, and an adjustment part. The rollers are disposed at intervals each other and rotate around axes. The belt is disposed around the plurality of rollers and travels. The meandering correction part shifts one end portion in an axial direction of a tension roller included in the plurality of rollers in a radial direction within a predetermined range to correct a meandering of the belt. The adjustment part shifts the other end portion in the axial direction of the tension roller in the radial direction such that a position of the one end portion of the tension roller is variable under a state where the meandering of the belt is corrected.

Apparatus and method that allows a conveyor belt operator to manually adjust a moving conveyor belt pitch around a curve in a confined space such as a tunnel, while also automatically adjusting skew to restore conveyor belt drift. The apparatus includes a rail pair between which a set of trough rollers, and a lower elevated return roller set, are adjustably mounted. The trough roller set is releasably and adjustably secured to brackets that can slide along a respective rail while the return rollers are also releasably coupled to respective sliding brackets on respective rails. Couplings are used to adjustably secure the trough roller set, and return roller set, to respective brackets by either selecting different bracket elevation attachment points and/or by changing couplings' length. A second set of trough rollers can also be slidably/adjustably mounted on the rails with the return rollers being located between the two trough roller sets.

Apparatus and method that allows a conveyor belt operator to manually adjust a moving conveyor belt pitch around a curve in a confined space such as a tunnel, while also automatically adjusting skew to restore conveyor belt drift. The apparatus includes a rail pair between which a set of trough rollers, and a lower elevated return roller set, are adjustably mounted. The trough roller set is releasably and adjustably secured to brackets that can slide along a respective rail while the return rollers are also releasably coupled to respective sliding brackets on respective rails. Couplings are used to adjustably secure the trough roller set, and return roller set, to respective brackets by either selecting different bracket elevation attachment points and/or by changing couplings' length. A second set of trough rollers can also be slidably/adjustably mounted on the rails with the return rollers being located between the two trough roller sets.

An arrangement for use with a conveyor belt assembly is disclosed. In at least one embodiment, the arrangement includes a transmission assembly arranged in operable association with a movable support or tracking frame assembly and configured having respective means for receiving an input force and supplying an output force. The transmission assembly is configured operable for transferring a received input force for supplying an output force for facilitating an adjustment of the position, alignment, or orientation of the support or tracking frame assembly via an actuator interface assembly.

An arrangement for use with a conveyor belt assembly is disclosed. In at least one embodiment, the arrangement includes a transmission assembly arranged in operable association with a movable support or tracking frame assembly and configured having respective means for receiving an input force and supplying an output force. The transmission assembly is configured operable for transferring a received input force for supplying an output force for facilitating an adjustment of the position, alignment, or orientation of the support or tracking frame assembly via an actuator interface assembly.