CALCULATIONS SUMMARY SHEET Project: Terrace Bay Neenah Paper Item: M-2054 Conv. Modifications at 350 fpm
Engineer's Stamp
Project #: Y5424-01 Rev.#: Calculations by: cdk Date: Checked by: Date:
A Aug 23/05
BELT CONVEYOR AND BELT FEEDER DRIVE SIZING CALCULATIONS The reference material for this spreadsheet consists of CEMA's 4th Edition of Belt of Belt Conveyors for Bulk Materials from which all of the lookup values are obtained.
BELT CAPACITY Required Conveying Rate: Material Conveyed:
250.00 tph wood chips 3
Material Density: Angle of Repose: Angle of Surcharge: Belt Width: Trough Angle (0 for flat belt): Maximum Load Cross Sectional Area:
30.0 lb/ft 45.0 deg 30.0 deg 36.0 in 35.0 deg 1.1420 ft2 3
Maximum Belt Capacity: Maximum Lump Size: Belt Speed: Design: Minimum to Handle Design Capacity: Maximum Capacity at Design Speed: ny
e
eg
b
req
6,857.00 ft /hr/100fpm 1.0 in 350.0 fpm 243.1 fpm 359.993 TPH
or
an an
Troughing Idler Info: Diameter Class (A-E) Load Rating , oa er pac ng: i Return Idler Spacing: K1, Lump Adjustment Factor: , nv ronm ronmen en a a n enan enance ce ac or: or: 2 , erv erv ce ac or: or: 3 , e p e e a c or : 4 , e n eg : b , a er e r a n eg : m Max Material Weight Actual Material Weight Idler Load (Max material weight): Adjusted Idler Load (Max material weight): Suitability of Idler Selection:
COOK ENGINEERING
<< input << input
**
e
<< input << input << input << input << input << input << input << input
CEMA 4th Edition Table or Figure or Page
Table 3-3 Table 3-3 Table 3-3 Table 3-1 Figure 4-1 Tables 4-2 to 4-5 Tables 4-2 to 4-5
<< input Table 4-1 Should be less than design
onveyors 5.0 in C 837.0 lb 4.000 4.000 ft 10.0 ft 1.00 1.15 1.20 0.85 9.0 lb/ft
<< input << input << input << input << input << input << input << input << input << input
Tables 5-8 to 5-12 Tables 5-8 to 5-12 Table 5-2 Table 5-2 Table 5-4 Table 5-5 Table 5-6 Table 5-7 Table 6-1
34.26 lb/ft 23.81 lb/ft 173.04 lb 202.98 lb lb Selection is OK
1
Te, EFFECTIVE TENSION Conveyor is Pan Type (Y or N): Coefficient of Dynamic Friction: # of Plows: # of Belt Cleaners (Scraper Type): L, Length of Conveyor (3000 ft maximum): H, Lift of Conveyor (Negative for Declining): # of Tight Side Non-Driving Pulleys: # of Slack Side Non-Driving Pulleys: Belt Material (Fabric or Steel): Approximate Tight Side Tension (Iterate): Approximate Slack Side Tension (Iterate): Number of drive pulleys: Lb, Length of Skirtboards (1 Side):
N 0.45 0.0 1.0 39.3 ft 9.5 ft 0.0 0.0 Fabric 2,074.3 lbs 1,131.4 lbs 1.0
<< input << input Pan Conveyor Only << input << input << input << input << input << input << input << input from below << input from below << input
8.0 ft
<< input
Kt, Temperature Factor:
1.0
<< input
Fig 6-1
Ai:
1.8
<< input
Page 76
Kx:
0.47 lb/ft
Ky:
0.028
<< input
Tables 6-2, 6-3
Material velocity component in direction of belt travel as it is fed onto conveyor: Cs, Skirtboard Friction Factor:
300.0 fpm
<< input
Calculate
<< input << input << input << input
Table 6-7
<< input
Page 84
Hopper used to regulate flow of material (Y or N)? w, Width of Hopper Outlet: l, Length of Hopper Outlet: Tp, Tension From Non-Driving Pulleys: Tam, Tension from Acceleration: Tsb, Skirtboard Tension:
0.0095 N 0.0 in 0.0 in 0.0 lb 3.6 lb 49.0 lb
Ttr , Tripper Tension:
0.0 lb
Tpl, Plow Tension:
0.0 lb
Tbc, Belt Cleaner Tension: Tension required to extract material from hopper (normal operation): Tension from belt on slide (Pan Conveyor Only): Te, Effective Tension (Required for Operation):
BELT SELECTION Angle of Wrap, Drive Pulley: Wrap Factor Cw: (Lagged) T2, Slack-Side Tension Required to Prevent Slip with Dry Belt (higher for wet conditions): Allowable percent sag of belt: T0, Required Belt Tension to Reduce Sag: T1, Operating Maximum Belt Tension: Maximum Belt Tension per inch (operating): Maximum Allowable Starting Tension:
COOK ENGINEERING
180.0 lb 0.0 lb 0.0 lb
**** Manual entry for this conveyor ***
518.5 lb
180.0 deg 1.20
<< input << input
Table 6-8
622.2 lb 2.00 %
<< input
Table 6-10
<< input
Calc's p. 102-110
826.8 lb 1,140.7 lb 31.7 lb/in 330.0 lb/in
<< input
Manufacturer
2
MOTOR SELECTION Operating Shaft Power Required from T e:
5.5 hp 0.28 hp 98.5 % 99.0 % 5.9 hp
Drive pulley friction loss horsepower: Speed Reduction Efficiency: Motor and Power Supply Efficiency: Operating Motor Power Required:
<< input << input
Manufacturer
Effective Tension Required for Starts: Percentage Full Load Torque req'd for Starts: Breakaway Torque Required for Starting:
810.8 lbs 156.4 % 27.8 ft-lbs
Selected Motor Horsepower: Selected Motor RPM: Motor Locked Rotor Torque (percentage of rated full load torque. Use 140% max for VFD applications, check with manufacturer): Motor Pull Up Torque (percentage of rated full load torque, check with manufacturer): Motor Rated Full Load Torque: Breakaway Torque Available for Starting: Minimum Pull Up Torque Available:
10.0 hp 1,750.0 rpm
<< input << input
250.0 %
<< input
Table 13-1
175.0 % 30.0 ft-lbs 75.0 ft-lbs 52.5 ft-lbs
<< input
Table 13-5
Breakaway Torque Sufficient for Starting: Pull Up Torque Sufficient for Acceleration: Selected Motor and Drive O.K.: Reduced Torque Starting Required:
YES YES YES NO
Notes and Comments: 1. This design method does not cover conveyors of over 3000 feet length, horizontally curved conveyors, head and tail driven conveyors, high lift conveyors, large decline with braking requirements or conveyors with undulating geometrics.
Page 16
2. This design method uses actual expected belt loading. It is worthwhile checking the horsepower requirements for a fully loaded belt in case of future higher capacity requirements. 3. Motor starting torque characteristics and conveyor acceleration should be checked in depth to ensure compatibility between motor and conveyor.
PULLEY SELECTION (Based on Dodge PT-Components Engineering Catalog:) Selected Motor Horsepower: 10.0 hp Pulley Face Width: 38 Inches Design Bearing Center to Center: 51.00 Inches BCMF: 13.00 Te (Effective Tension): 942.9 lbs Drive Factor: (1.2 for bare manual, 0.8 for lagged) 1.2 T2 (Slack Side Tension): 1,131.4 lbs T1 (Tight Side Tension): 2,074.3 lbs Design PIW (Drive Side): 57.6 lbs per inch Design PIW (Slack Side): 31.4 lbs per inch Arc of Contact: 180.0 degrees Tail Pulley Diameter: (Ext'g., Bare) 20.0 Inches Drive Pulley Diameter: (Lagged, 1/4") 24.5 Inches Check on Tail Pulley to Belt Tension 275 lbs per inch Check on Drive Pulley to Belt Tension 345 lbs per inch Selected Tail Pulley Size O.K.: YES Selected Drive Pulley Size O.K.: YES
Page 119
<< input
<< input
Table 2 pg.13-52
<< input << input << input << input
Table 1 pg.13-12 Table 1 pg.13-12 Manufacturer Manufacturer
SHAFT SELECTION (Based on Dodge PT-Components Engineering Catalog:)
COOK ENGINEERING
3
Resultant Pulley Load (Tail): Resultant Pulley Load (Drive): Design Drive Pulley Shaft Size: Design Tail Pulley Shaft Size: Check on Drive Shaft Load Rating: Check on Tail Shaft Load Rating: Design Steel Shafting Grade: (1045) Valve N Adrive (use Table 4 to choose correct A calc.)
2,023.0 lbs 2,865.9 lbs 2.94 Inches 2.19 Inches 3200 lbs 1100 lbs 8,000 psi 6.5 Inches 8.25 Inches
<< input
KB-drive (KB = 1.5 or K B = 2.5 for Overhung load)
2.50 2.7235 Inches
<< input
Check on Drive Pulley Shaft from Torque: Atail (use Table 4 to choose correct A calc.)
8.13
KB-tail (KB = 1.5 or KB = 2.5 for Overhung load) Check on Tail Pulley Shaft from Torque: Selected Drive Pulley Shaft O.K. for Load: Selected Drive Pulley Shaft O.K. for Torque: Selected Tail Pulley Shaft O.K. for Load: Selected Tail Pulley Shaft O.K. for Torque:
<< input << input << input << input << input
Manufacturer Manufacturer Table 3 PT13-13 Table 3 PT13-13 Manufacturer
<< input
1.50 1.9873 Inches
<< input
YES YES YES YES
BELT SELECTION Select a belt with a MOR 1/4" X 1/8", Grooved Pattern SELECTION: SCANDURA ROLYALON 3-330 BELT SPEED REDUCER SELECTION (Based on Dodge Gearing Catalogue:) Dodge TDT Series Convert FPM to RPM: 54.6 RPM Determine Service Factor: 1 Calculate Equivalent HP 10 HP Application Class II Select Unit Size & Ratio TDT425 Unit ratio 24.38 Ratio Therefore reuse existing 10 hp motor, new TDT425 reducer required
< Note: Manual add in lagging thickness << input Table 2 pg.2-7
BELT DRIVE SELECTION (Based on Dodge PT-Components Engineering Catalog:) Determine Service Factor: 1.5 Design HP: 15.0 Determine Overall Ratio Required: 32.07 Determine Belt Drive Ratio: 1.32 Selected nearest ratio 1.31 Driver Sheave OD 5.70 Inches Driven Sheave OD 7.50 Inches HP Per Belt 3VX series 15.64 Minimum Number of belts required: 1.0 Belt Selection 5VX-500 Belt Center to Center Distance 16.4 Note: Designer can also use Dodge PT-Components Engineering Catalog pg. PT7-1
COOK ENGINEERING
<< input << input << input
<< input
pg G1-21
table 2 pg PT7-43
Motor rpm/belt rpm Overall Ratio/reducer ratio << input Page B-168 << input Page B-168 << input Page B-168 << input Page B-168 << input << input
Page B-168
4
