Belt weighing system having an entry transition support structure

摘要

A belt weighing system comprising a weigh frame, an entry transition support structure and an exit transition support structure positioned on either sides of the weigh frame. The weigh frame preferably includes a plurality of closely spaced idlers to support a conveyor belt. The optional entry transition support structure can include one or more second belt support components, and the optional exit transition support structure can include one or more third belt support components. In one example form, a plurality of closely spaced idlers is also provided to support the belt adjacent or near the weigh frame in the transition regions. The plurality of closely spaced idlers reduces, ameliorates or controls belt sag at or near the weigh frame and thus reduces errors that are otherwise introduced by relative material movement or other non-linear dynamic effects along the conveyor belt.

主权项

1. A belt weighing system, comprising:
a weigh frame; additional belt support components positioned on the weigh frame and adjacent the weigh frame along a conveyor belt, and between spaced apart idlers that support the conveyor belt; and an entry transition support structure positioned on a first side of the weigh frame and including one or more of the additional belt support components, wherein the additional belt support components positioned on the entry transition support structure include horizontal carry idlers and are positioned to reduce belt sag to reduce relative movement of conveyed material along the conveyor belt, and wherein the entry transition support structure is pivoted at or near a line of contact of the conveyor belt with a last fixed idler before the weigh frame, and on the end toward the weigh frame is pivoted at or near a line of contact between the conveyor belt and a first idler on the weigh frame.