Level Conveyors: HP=)/33,000 Inclined Conveyors: HP=+x F x S)/33,000. Effective Tension. Pull needed to move belt and load horizontally: E= F x Tight Side Tension. Total tension to move belt and load horizontally: E 2 = E+E 1. Slack Side Tension. Additional tension required to prevent slippage on drive pulley: E 1 =E x K

Belt tension:The belt of the conveyor always experience a tensile load due to the rotation of the electric drive, weight of the conveyed materials, and due to the idlers. The belt tension at steady...

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Input data: Conveyor capacity = 1500 t/h = 416.67 Kg/sec Belt speed = 1.5 m/sec Conveyor height = 20 m Conveyor length = 250 m Mass of a set of idlers = 20 Kg Idler spacing = 1.2 m Load due to belt = 25 Kg/m Inclination angle of the conveyor = 5 0 Coefficient of friction = 0.02 Start up factor = 1.5 Drive efficiency = 0.9 Friction factor = 15 Breaking strength loss factor = 0.75 Calculation: 1. First, we will use the eqn.1.2for finding out the load due to idlers: mi = = 16.67 Kg/m 1. We will use the eqn.1.1for finding out the belt tension in steady state: Tb = 1.37*0.02*250*9.81*16.67+ {2*25+ }*cos + ) = 77556.88 N. 1. The belt tension while starting the system can be calculated by using the eqn.1.4: Tbs = 1.5 * 77556.88 = 116335.32 N 1. For calculating the power at drive pulley, we will use the eqn.1.3: Pp = / 1000 = 116.335 Kw 1. We will use the eqn.1.5estima...

The conveyor belt calculations methodology discussed in the article is to be used only for the guidance on calculating the initial conveyor design parameters; the final design must be validated by using the FEAor other similar tools before building the prototype. Reference 1. Dunlop Conveyor belt technique design and calculation 2. Bridgestone Conveyor Belt Design Manual

3. BELT CONVEYORS BASIC CALCULATIONS: 1. Mass of the Load per Unit Length: Load per unit length. Given the production capacity Qt = tph, the weight of the load per unit length is calculated by: Wm = 2000. Qt or Wm = 33.333.Qt = 60 x v v

Belt Conveyor Capacity Table 1. Determine the surcharge angle of the material. The surcharge angle, on the average, will be 5 degrees to 15 degrees less than the angle of repose. 2. Determine the density of the material in pounds per cubic foot . 3. Choose the idler shape. 4. Select a suitable conveyor belt speed. 5.

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