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Design Notes: Cross - country Conveyors |
Construction of a cross-country conveyor or any high tension conveyor requires experienced supervision. The surveyor is kept busy. The supporting structures are built true to the belt line. All idlers and pulleys are installed square to the belt line. Notify the construction supervisors that at start-up all mechanical equipment will be installed square and true in their finished position. (There will be no beating idlers with hammers to try for belt alignment). Do not rush to fix belts that run off-center. If possible run material over them for a week to see where they go when the initial transverse stiffness is loosened. Then adjust belt centering with pulley repositioning. Cross-country conveyors usually require high power. Because of the resulting high tensions in the conveyor belt, equipment placed in contact with the belt should be precisely aligned and located. Circles Geometry can help in the profile design of a conveyor, especially in the curve to a curve situations. In any case, it is a good checking tool in conveyor profile drawing production. Circles Geometry will give you the specifications you need to get well constructed terminal structures where, because of high tensions, the forced belt curvature required is constructed of idler rolls instead of snub pulleys. I have found that few people involved in supplying these structures have enough retained knowledge of analytic geometry to accurately dimension them. Although there are shops who build amazing well by eye, good specifications must have dimensions. You can get the dimensions to place idlers in any curve with Circles Geometry. Jack Gorman |
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