Conveyor Take-up Arrangement: All belt conveyors require the use of some form of take-up device for the following reasons: To ensure adequate tension of the belt leaving the drive pulley so as to avoid any slippage of the belt To ensure proper belt tension at the loading and other points along the conveyor To compensate for changes in belt length
Pulley: The diameters of standard pulleys are: 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1400 and 1600 mm. pulley may be straight faced or crowned. The crown serves to keep the belt centered. The height of the crown is usually 0.5% of the pulley width, but not less than 4 mm. The pulley diameter Dp depends on the
Types and Selection of Drives: Single Unsnubbed Bare / Lagged pulley Drive Snubbed Bare / Lagged Pulley Drive Tandem Drive Special Drives Single Unsnubbed Bare / Lagged Pulley Drive: This is the simplest drive arrangement consisting of a steel pulley connected to a motor and the belt wrapped round it on an arc of 180°. This can be used for
Drive arrangement: In belt conveyors the driving power is transmitted to the belt by the driving pulley which is rotated by an electric motor. The basic mechanism of transmission of power from the pulley to the belt is based on the theory of friction drive. The fundamental equation for a belt conveyor drive is given by: (The Euler’s equation) T1
Idlers: Conveyor belts are usually supported on idler rollers. In some cases they are supported by solid wood or runway of steel sheet or a combination support comprising of the two types of supports placed alternatively. There are two basic types of idlers: Carrying idlers Return idlers Carrying Idlers: The most commonly used type of carrying idlers used for handling
Belt Conveyor parts: The desirable properties of an ideal belt material are: High Strength, Low self weight, Small specific elongation, High Flexibility, High resistivity to ply separation Low hygroscopic Long service life In general Reinforced Rubber Belts meet these requirements better than any other material. In general, a conveyor belt consists of three elements: Top cover Carcass Bottom Cover Carcass:
