Rulmeca Motorized Pulley Power Calculation Program - Metric Version 5.37 This is a worksheet only. It is to be hidden from view. Customer Name Conveyor Number Conveyor Length (m) 1000 Load (T/hour) 700 86.8 kW Belt Speed (m/s) 2.5 1050 mm Material Lift Height (m) 0 RECOMMENDED DRUM MOTOR Ambient temperature (deg C) Min -10 90 kW Ambient temperature (deg C) Max 40 2.5 m/s Initial Velocity of Material (m 0 JOKI Model(s): Number of Belt Cleaners 2 800 Number of Belt Ploughs 1 $0 Length of Skirt Zone (m) 3 Depth of Mat'l in skirt zone (m 25 Number of Non-driven Pulleys 4 ALTERNATE DUAL DRIVE OPTION 0 Kg/m 0 55 kW/ea 2.5 m/s JOKI Model(s): Elevation (Km above sea level) 1.0 630, 800 Type of Material Sand, dry bank $0 Belt Width (mm) 1000 0 Belt Carcass Type Fabric Idler Roll diam (mm) 108 CEMA Type (A,B,C,D,E) C RECOMMENDED OPTIONS: Troughing (carrying) Idler Spac 1.2 Required Belt Pull, Te = 33209 N SPECIAL NOTES: Engineering Design Data: Ai 10.2304 N Tm 0 N Calculated power to drive c 83.02 kW Cs 0.1378 Tp 999 N Drive pulley bearing fricti 1.07 kW H 0 m Tpl 876 N Power at motor: 84.10 kW Kt 1.06 Tsb 269 N Gear loss in motorized pull 2.69 kW Kx 0.93kg/m Ttr 0 N Calculated power for JOKI 86.79 kW Ky 0.019 Tx 9654 N Derate for high elevation 0.00 kW L 1000 m Tyb 4671 N Required Power for motorize 86.79 kW Q 700 mtph Tyc 2611 N Si 1.2 m Tym 14504 N (Note: JOKI models above are based on 50 Hz Tac 2895 N Tyr 2059 N Tam 486 N V 3 m/s Power savings for 3 shift/day, 50 week/yr operation Tb 0 N Wb 13 kg/m (JOKI pulley compared to gearmotor & V-belt drive) Tbc 1751 N Wm 78 kg/m Save: 23876 Kw-Hrs/Yr, 1 shift/day or 71629 Kw-Hr Te 33209 N Save: 2077 €/Yr, 1 shift/day or 6232 €/Yr, 3 shifts/d
Transcript
document.xls 04/08/2023 05:22:46
Rulmeca Motorized Pulley Power Calculation Program - Metric Version 5.37
This is a worksheet only. It is to be hidden from view.
Customer NameConveyor NumberConveyor Length (m) 1000Load (T/hour) 700 86.8 kWBelt Speed (m/s) 2.5 1050 mmMaterial Lift Height (m) 0 RECOMMENDED DRUM MOTORAmbient temperature (deg C) Min -10 90 kWAmbient temperature (deg C) Max 40 2.5 m/sInitial Velocity of Material (m/s) 0 JOKI Model(s):Number of Belt Cleaners 2 800Number of Belt Ploughs 1 $0 Length of Skirt Zone (m) 3Depth of Mat'l in skirt zone (mm) 25Number of Non-driven Pulleys 4 ALTERNATE DUAL DRIVE OPTION0 Kg/m 0 55 kW/ea
2.5 m/s
JOKI Model(s):
Elevation (Km above sea level) 1.0 630, 800Type of Material Sand, dry bank $0 Belt Width (mm) 1000 0
Belt Carcass Type Fabric
Idler Roll diam (mm) 108 CEMA Type (A,B,C,D,E) C RECOMMENDED OPTIONS:Troughing (carrying) Idler Spacing (m) 1.2
Required Belt Pull, Te = 33209 N SPECIAL NOTES:
Engineering Design Data:
Ai 10.2304 N Tm 0 N Calculated power to drive conveyor 83.02Cs 0.1378 Tp 999 N Drive pulley bearing friction: 1.07H 0 m Tpl 876 N Power at motor: 84.10
Kt 1.06 Tsb 269 N Gear loss in motorized pulley: 2.69Kx 0.93kg/m Ttr 0 N Calculated power for JOKI 86.79Ky 0.019 Tx 9654 N Derate for high elevation 0.00L 1000 m Tyb 4671 N Required Power for motorized pulle 86.79Q 700 mtph Tyc 2611 NSi 1.2 m Tym 14504 N (Note: JOKI models above are based on 50 Hz power.)
Tac 2895 N Tyr 2059 N
Tam 486 N V 3 m/s Power savings for 3 shift/day, 50 week/yr operationTb 0 N Wb 13 kg/m (JOKI pulley compared to gearmotor & V-belt drive)
Tbc 1751 N Wm 78 kg/m Save: 23876 Kw-Hrs/Yr, 1 shift/day or 71629 Kw-Hrs/Yr, 3Te 33209 N Save: 2077 €/Yr, 1 shift/day or 6232 €/Yr, 3 shifts/day @
document.xls 04/08/2023 05:22:46
kWkWkWkWkWkWkW
(Note: JOKI models above are based on 50 Hz power.)
Power savings for 3 shift/day, 50 week/yr operation(JOKI pulley compared to gearmotor & V-belt drive)
Save: 23876 Kw-Hrs/Yr, 1 shift/day or 71629 Kw-Hrs/Yr, 3Save: 2077 €/Yr, 1 shift/day or 6232 €/Yr, 3 shifts/day @
Specifier
document.xls, Specifier, Page 3 of 8 04/08/2023 05:22:46
Rulmeca Motorized Pulley Power Calculation Program - Metric Version 5.37Specifier Sheet and Recommendation Summary
Material, fric coeff Grains,wheat,corn,etc, 0.043Gravel, bank run, 0.115
Belt Width Iron Ore, 0.276Limestone, pulv.,dry, 0.128
Belt Carcass Type RECOMMENDED "SINGLE DRIVE" MOTORIZED PULLEY: Phosphate rock, dry, 0.109Salt, dry fine, 0.081
Idler Roll diameter Power: 90 kW Models Available: Sand, dry, bank, 0.138Wood chips, 0.010
Belt Speed: 2.5 m/s 800
Troughing Idler Spacing Face Width: 1050 mm
Angle of Wrap** RECOMMENDED "DUAL DRIVE" MOTORIZED PULLEY:
Type of Lagging Power: 55 kW/ea Models Available:
Type of Take-up Belt Speed: 2.5 m/s 630, 800
Type of Belt Face Width: 1050 mm
Power savings - 1 shift and 3 shift per day:Condition of Idlers & Pulleys (Motorized Pulley compared to exposed conveyor belt drives) Condition of Idlers & Pulleys
Save: 23876 Kw-Hrs/Yr, 1 shift/day or 71629 Kw-Hrs/Yr, 3 shifts/day** This parameter is for either single or dual drive arrangement. Save: 2077 €/Yr, 1 shift/day or 6232 €/Yr, 3 shifts/day @ 0.087 €/Kw-Hr
#N/A *A smaller pulley diameter may cause belt carcass or fastener damage.
This calculation does not check pulley/belt traction. Theoretical Belt Strength (based on piw and belt width)Belt Strength (lbs)= belt width (in) x piw
Special Loading Conditions: Belt Width=
3. Sidewall & Cleated Belt Parameters: piw =
2. For slider bed, specify bed length and type of bed material below. Sidewall & cleat height (mm) 0 Belt Strength=
BELT PULL SUMMARY: Force (N) Standard Loading Belt Pull 33,209 Extra pull for Hopper (if any) 0 Extra pull for Slider Bed (if any) 0 Force (N) Extra pull for Diverter or Tripper (if any) 0 Maximum Allowable Radial Load 73,600 TOTAL Required Belt Pull (Te): 33,209 Estimated Maximum Radial Load #N/A
#N/A#N/A
RECOMMENDED OPTIONS (if any):#N/ASelected Diameter is 800 mm#N/A
SPECIAL NOTES (if any): (This calculation does not check pulley/belt traction.)
#N/A
Check Belt Tension Force (N)Maximum Belt Tension (T1) #N/AAllowable Belt Tension 77,606
RECOMMENDED "SINGLE DRIVE" MOTORIZED PULLEY: #N/A
Power: 90 kW Models Available:
Belt Speed: 2.5 m/s 800
Face Width: 1050 mm
RECOMMENDED "DUAL DRIVE" MOTORIZED PULLEY:
Power: 55 kW/ea Models Available:
Belt Speed: 2.5 m/s 630, 800
Face Width: 1050 mm
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REQUIRED POWER:
Check Radial Load (to prevent internal damage to pulley)
Power Calculation Summary Calculated power to drive conveyor belt: 83.0 kW Drive pulley bearing friction: 1.1 kW Power at motor: 84.1 kW Gear loss in motorized pulley: 2.7 kW Calculated power 86.8 kW Derate for high elevation 0.0 kW Derate for high temperature 0.0 kW Required Power for motorized pulley: 86.8 kW
Symbol Value Definition of TermsTe 33209 N Te = effective belt tension at drive.
ang #N/A ang = angle of belt wrap around drive pulley(s).Cw #N/AT2 #N/A T2 = estimated "slack-side tension" required to keep belt from slipping on pulley surface.T1 #N/A T1 = Te + T2
T1 + T2 #N/A T1 + T2 = Sum of belt forces on drive pulley. NOTE: This is not a vector sum.T_L Full Lagging T_L = type of lagging specified for drive pulley(s).
Tatype Manual Tatype = type of take-up specified to apply "slack-side tension".Beltype 4 ply Beltype = type of belt carsass specified.
w 1000 mm w = belt widthstr 17323 N str = tensile strength of specified belt.
pstr #N/A pstr = percentage of available belt tensile strength used.btr 14 to 21 mm btr = thickness range of specified beltAi 10.2304 N Ai = belt tension required to overcome frictional resistance and rotate idlers.Cs 0.1378 Cs = skirtboard friction factor.H 0 m H = vertical distance that material is lifted or lowered.
Kt 1.06 Kt = ambient temperature correction factor.
Kx 0.93kg/m
Ky 0.02 Ky = factor to calculate resistance of belt and resistance of load to flexure as they move over idlers.L 1000 m L = length of conveyor.Q 700 mtph Q = tons per hour conveyed.Si 1.2 m Si = troughing idler spacing.
Tac 2895 N Tac = total of the tensions from conveyor accessories.Tam 486 N Tam = tension required to accelerate the material continuously as it is fed onto belt.Tb 0 N Tb = tension required to lift or lower the belt.Tbc 1751 N Tbc = tension required to overcome belt cleaner drag.Te 33209 N Te = effective belt tension at drive.Tm 0 N Tm = tension required to lift or lower conveyed material.
Tp 999 N
Tpl 876 N Tpl = tension required to overcome belt plow drag.Tsb 269 N Tsb = tension required to overcome skirtboard drag.Ttr 0 N Ttr = tension required to overcome special loading condition(s.)Tx 9654 N Tx = tension required to overcome carrying and return idler friction.
Tyb 4671 N Tyb = total of tensions due to resistance of belt to flexure as it rides over carrying and return idlers.Tyc 2611 N Tyc = tension due to resistance of belt to flexure as it rides over carrying idlers.Tym 14504 N Tym = tension due to resistance of material to flexure as it rides over carrying idlers.Tyr 2059 N Tyr = tension due to resistance of belt to flexure as it rides over return idlers.V 3 m/s V = design belt speed.
Wb 13 kg/m Wb = weight of belt per unit of length of conveyor.Wm 78 kg/m Wm = weight of material per unit of length of conveyor.
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Kx = factor to calculate frictional resistance of the idlers and the sliding resistance between belt and idler rolls.
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Tp = tension required to overcome resistance of belt to flexure around pulleys and resistance of pulleys to rotate on their bearings.
Diameter Pulley (mm) 516 mm Lagging Thickness (mm)
Lagging Thickness (MM) 8 mm
Belt Speed 2.58 m/s Actual Belt Speed (m/s)
25 deg.
Tonnage Rate (MTPH) 700
1,760
Belt Thickness (mm) 8
Distance to Chute Plate (mm) 700
Angle of Conv. Inclination (deg) 0 Surcharge angle (deg) Alternate Belt Speed (m/s) 1.4 Tonnage Rate (metric tph)=
Belt Speed (fpm)Material Density (kg/cu m)=
Area A (sq ft)
0
Calculated Results: Pulley Diam Lagged (in) Calc'd mat'l height at centerline 113 mm Pulley radius Lagged (in) Calc'd actual height of C.O.G.* 46 mm Belt Thickness (in) Calc'd actual mat'l cross section 4.3 sq m Radius to Belt Top (in) CEMA Max Allow. height at center 198 mm
CEMA Max Height of C.O.G.* 79 mm
CEMA Max Allow. cross section 13.7 sq m
Note:
This program uses actual C.O.G.* height above
top of belt (based on actual cross section) to plot
trajectory. Height of C.O.G. for CEMA
max. allow. cross section is given for ref. only.
(based on CEMA 5th Edition)
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Surcharge Angle (degrees)
Material Density (Kg/m3)
Go to Large Pulley Sheet Design Trajectory - solid red line; Alternate speed - dotted blue.
Go to Overview Sheet
Design Cross Section - dotted red line; CEMA max allow. - solid black line.
*C.O.G. = center of gravity of material, shown as ∆ and ∆
Mat'l Cross Section at Pulley Face:Small Pulley (scale: 75 mm/increment)
Material Trajectory:Small Pulley (scale: 75 mm/increment)
