Our PRO-BELT computer software has been proven in the field to be highly accurate for the design of all belt conveyors of any size or configuration. We ran our PRO-BELT calculations for a very long overland conveyor with a length of 12,345 meters. The conveyor had a very small decline of 41 meters. This was an excellent example to use to certify the accuracy of PRO-BELT because most of the belt tension and power requirement came from friction calculations and very little came from lift requirements. High incline conveyors are not a good example to use because lift power is a scientific absolute. The calculations were made with our metric version, but the English version gives identical results after units conversion.
Printouts were made for two different drive configurations. One analysis was based on a configuration with multiple head drives only, and the second analysis was a combination of multiple head drives and tail booster drives. The results were identical.
The owner field tested this conveyor in 1995. The testing was extensive and was considered to be highly accurate. PRO-BELT gave a "Recommended Minimum Motor Power" of 1746 kW versus the field test result of 1720 kW. The PRO-BELT analysis was 101.5% of the actual power requirement. This accuracy within 1.5% is considered to be outstanding because this very long overland conveyor did not have much lift. The most important calculation in belt conveyor design is to estimate the idler friction and belt flexure friction accurately, since the lift calculation is a scientific absolute.
PRO-BELT goes beyond CEMA to provide extremely accuracy results. PRO-BELT allows belt conveyors to be divided into multiple sections with different loading conditions in each section. The software gives identical accuracy whether the conveyor is divided into a few sections or many sections. The designs are accurate for conveyors of any length including extremely long overland belt conveyors.
The PRO-BELT pulley shaft design program was certified accurate by one of the largest independent engineering firms in the world. The program calculates the deflection at the pulley hub based on a free shaft analysis. The bending moment between the shaft and hub is neglected. This gives a conservative design that eliminated many of the common pulley failures. The program also performs a combined bending and torsional fatigue analysis throughout the shaft in accordance with ANSI / ASME Standard B106.M. The drive pulley extension is also analyzed for either directly connected drives or shaft mounted drives. A warning message is displayed when the deflection or stress is outside of allowable limits.
The PRO-BELT feeder program was tested by a world renown bulk materials handling equipment manufacturing company. They tested a very large belt feeder at Kennecott Copper in Magna, Utah. The results were highly accurate and slightly on the conservative side. They proceeded to use the PRO-BELT feeder program to design fifteen (15) very large belt feeders for a large ore processing project in South America. Our feeder program formulas are proprietary. Highly accurate results are produced for belt feeders of any size operating with any bulk material. We will not publish the formula used to obtaining this high degree of accuracy. The feeder program can also be used to model apron feeders and drag chain conveyors. Belt feeders can be designed with either slider bed or idler supported belts. The feeder and have a conveyor section as well as a feed hopper section. The three page report gives the detailed results for all friction loads within the feeder.
is available in either English or Metric units. Click the following link to see the Price Schedule & Upgrade Order Form.
Professional Designers & Engineers, Inc.
Kent R. Rieske, President
P. O. Box 11380
Boulder, CO 80301 USA
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Tel: 303
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