Design and Model of Bucket Elevator

1. A
Project Report
ON
?DESIGN AND MODEL OF BUCKET ELEVATOR ?

Under The Guidance Of
Prof. Y.D. Patel
Assistant Professor, A. D. Patel Institute of Technology

In partial Fulfillment for the award of the degree
Of
Bachelor of Engineering
In
Mechanical Engineering

Prepared By
UTKARSH AMARAVAT
(080010119001)

Submitted to

A.D. Patel Institute of Technology, New V.V. Nagar
May, 2012

2. xi

APPENDIX: A

PROGRAM:
/* Program about Bucket Elevator Design */
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
intNp, Dp, B, Bb, tb, b, h1, d, yes, no, Shaft_load, Bearing_No, Bearing_bore_diameter,
Bearing_outside_diameter, Permissible_rpm_for_Grease_lubrication, Permissible_rpm_for_Oil_lubrication, rh;
float H, Density, Bp, Q, a, ratio, v, rp, N,n,f, hp, V, mrb, qrb, mb, q0, T3, T4, k=10, i, W, Efficiency, P, t, L, T,
h2, C0, C, w, h, Te;
printf("Lifting Height(H) in m = \n");
scanf("%f", &H);
printf("Wheat Density in Tonne/m3 = \n");
scanf("%f", &Density);
printf("No of Belt ply (Np) = \n");
scanf("%d", &Np);
printf("Efficiency = \n");
scanf("%f", &Efficiency);
printf("Want to enter Capacity (Q)? Enter 1 for yes and 0 for no- \n");
scanf("%d",&yes);
{
if(yes)
{
printf("Capacity (Q) in Tonne/hr = \n");
scanf("%f", &Q);
a=Q/(3.60*3.2*Density*0.75);
{
if(1.1<=a<=1.3)
{
printf("ratio (i0/tb) in m-1 = 1.3 \n");
ratio = 1.3;
}
else if(1.4<=a<=2.0)
{
printf("ratio (i0/tb) in m-1 = 2.0 \n");
ratio = 2.0;

3. xii

}
else if(2.1<=a<=3.24)
{
printf("ratio (i0/tb) in m-1 = 3.24 \n");
ratio = 3.24;
}
else if(3.25<=a<=5.0)
{
printf("ratio (i0/tb) in m-1 = 5.0 \n");
ratio = 5.0;
}
else if(5.1<=a<=8.0)
{
printf("ratio (i0/tb) in m-1 = 8.0 \n");
ratio = 8.0;
}
else if(8.1<=a<=12.6)
{
printf("ratio (i0/tb) in m-1 = 12.6 \n");
ratio = 12.6;
}
else
printf("out of range.");
}
}
else
{
printf("Enter value of ratio (i0/tb)- (1.3, 2.0, 3.24, 5.0, 8.0, 12.6) in m-1 = \n");
scanf("%f", &ratio);
Q=(ratio*3.60*3.2*Density*0.75);
printf("Capacity (Q) in Tonne/hr = %f \n", Q);
}
}
printf("Want to enter Pulley diameter (Dp) or Want to use equation Dp=125*Np? Enter 1 for yes and 0 for no-
\n");
scanf("%d",&yes);
{
if(yes)
{

4. xiii

printf("Pulley diameter (Dp) in mm = \n");
scanf("%d", &Dp);
}
else
{
Dp=125*Np;
printf("Pulley diameter (Dp) in mm = %d \n", Dp);
}
}
rp=(float)Dp/(2*1000);
printf("Pulley radius (rp) in m = %f \n", rp);
N=(float)60*3.2*1000/(3.14*Dp);
printf("Belt velocity (v) in m/s = 3.2 \nRotation speed of prlley (N) in rpm = %f \n", N);
hp=(float)9.81*Q*Q/(3.14*3.14*N*N);
printf("Pole Distance (hp) in m = %f \n", hp);
{
if(hp<rp)
{
printf("Unloading of bucket centrifugally is possible. \n");
{
if(ratio==1.3)
{
printf("Bucket width (B) in mm = 125 \nBelt width (Bb) in mm = 160 \nBucket pitch (tb) in mm = 220 \n");
B=125;
Bb=160;
tb=220;
}
else if(ratio==2.0)
{
printf("Bucket width (B) in mm = 160 \nBelt width (Bb) in mm = 200 \nBucket pitch (tb) in mm = 320 \n");
B=160;
Bb=200;
tb=320;
}
else if(ratio==3.24)
{
printf("Bucket width (B) in mm = 200 \nBelt width (Bb) in mm = 250 \nBucket pitch (tb) in mm = 400 \n");
B=200;
Bb=250;

5. xiv

tb=400;
}
else if(ratio==5.0)
{
printf("Bucket width (B) in mm = 250 \nBelt width (Bb) in mm = 300 \nBucket pitch (tb) in mm = 400 \n");
B=250;
Bb=300;
tb=400;
}
else if(ratio==8.0)
{
printf("Bucket width (B) in mm = 320 \nBelt width (Bb) in mm = 370 \nBucket pitch (tb) in mm = 500 \n");
B=320;
Bb=370;
tb=500;
}
}
V=(float)21*B/250;
printf("Bucket volume in mm3 = %f \n", V);
mrb=2.4*Np/4;
qrb=9.81*mrb;
mb=3.38*B/250;
q0=qrb+(9.81*mb*1000/tb);
T4=(float)q0*H;
T3=(float)3.00*T4;
printf("Tension T3 in N =%f \nTension T4 in N = %f \n", T3,T4);
i=(float)k*T3/(Bb*55);
printf("Safety factor k = 10 \nRequired no. of belt plies (i) = %f \n", i);
W=(float)(T3-T4)/1.08;
printf("Pulley Resistance (W) in N = %f \n", W);
P=(float)1.25*W*3.2/(1000*Efficiency);
printf("Motor power (P) in kW = %f \n", P);
Bp=(float)1.25*Bb;
printf("Pulley width (Bp) in mm = %f \n", Bp);
t=(float)(Dp/200)+2;
printf("Rim thickness (t) in mm = %f \n", t);
L=(float)2*H+(3.14*Dp/1000);
printf("Belt length (L) in m = %f \n", L);
T=(float)(T3-T4)*Dp/2;

6. xv

printf("Belt Tension (T) in Nm = %f \n", T);
f=(float)T3/Bb;
printf("Permissible Tension (f) in belt per mm width in N/mm = %f \n",f);
{
if(108<=B<=120)
printf("Projection of bucket (b) in mm =79 \nDepth of Bucket (h1) in mm = 79 \nh2 in mm = 47.08 \n");
else if(121<=B<=180)
printf("Projection of bucket (b) in mm =105 \nDepth of Bucket (h1) in mm = 105 \nh2 in mm = 62.58 \n");
else if(181<=B<=235)
printf("Projection of bucket (b) in mm =130 \nDepth of Bucket (h1) in mm = 133 \nh2 in mm = 80.48 \n");
else if(236<=B<=320)
printf("Projection of bucket (b) in mm =156\n Depth of Bucket (h1) in mm = 156 \nh2 in mm = 92.98 \n");
else
printf("out of range. \n");
}
n=(float)L*1000/tb;
printf("N0. of Bucket (n) = %f \n", n);
if(Bb==160 &&Dp==200)
{
printf("Shaft diameter (d) in mm = 25 \nShaft_load in kN = 5 \nBearing_No = 6005 \nBearing_bore_diameter in
mm = 25 \nBearing_outside_diameter in mm = 47 \nBearing_width in mm = 12 \nBearing static load (C0) in kN
= 6.55 \nBearing Dynamic load (C) in kN = 11.20 \nPermissible_rpm_for_Grease_lubrication = 15000
\nPermissible_rpm_for_Oil_lubrication = 18000 \n");
d=25;
}
else if(Bb==200 &&Dp==200)
{
printf("Shaft diameter (d) in mm = 30 \nShaft_load in kN = 6 \nBearing_No = 6006 \nBearing_bore_diameter in
mm = 30 \nBearing_outside_diameter in mm = 55 \nBearing_width in mm = 13 \nBearing static load (C0) in kN
= 8.30 \nBearing Dynamic load (C) in kN = 13.30 \nPermissible_rpm_for_Grease_lubrication = 12000
\nPermissible_rpm_for_Oil_lubrication = 15000 \n");
d=30;
}
else if(Bb==250 &&Dp==200)
{
printf("Shaft diameter (d) in mm = 35 \nShaft_load in kN = 7 \nBearing_No = 6007 \nBearing_bore_diameter in
mm = 35 \nBearing_outside_diameter in mm = 62 \nBearing_width in mm = 14 \nBearing static load (C0) in kN
= 10.20 \nBearing Dynamic load (C) in kN = 15.90 \nPermissible_rpm_for_Grease_lubrication = 10000
\nPermissible_rpm_for_Oil_lubrication = 13000 \n");

7. xvi

d=35;
}
else if(Bb==160 &&Dp==250)
{
printf("Shaft diameter (d) in mm = 35 \nShaft_load in kN = 7 \nBearing_No = 6007 \nBearing_bore_diameter in
mm = 35 \nBearing_outside_diameter in mm = 62 \nBearing_width in mm = 14 \nBearing static load (C0) in kN
= 10.20 \nBearing Dynamic load (C) in kN = 15.90 \nPermissible_rpm_for_Grease_lubrication = 10000
\nPermissible_rpm_for_Oil_lubrication = 1300 \n");
d=35;
}
else if(Bb==300 &&Dp==200)
{
printf("Shaft diameter (d) in mm = 40\n Shaft_load in kN = 8 \nBearing_No = 6008 \nBearing_bore_diameter in
mm = 40 \nBearing_outside_diameter in mm = 68 \nBearing_width in mm = 15 \nBearing static load (C0) in kN
= 11.60 \nBearing Dynamic load (C) in kN = 16.80 \nPermissible_rpm_for_Grease_lubrication = 9500
\nPermissible_rpm_for_Oil_lubrication = 12000 \n");
d=40;
}
else if(Bb==200 &&Dp==250)
{
printf("Shaft diameter (d) in mm = 40 \nShaft_load in kN = 8 \nBearing_No = 6008 \nBearing_bore_diameter in
mm = 40 \nBearing_outside_diameter in mm = 68 \nBearing_width in mm = 15 \nBearing static load (C0) in kN
= 11.60 \nBearing Dynamic load (C) in kN = 16.80 \nPermissible_rpm_for_Grease_lubrication = 9500
\nPermissible_rpm_for_Oil_lubrication = 12000 \n");
d=40;
}
else if(Bb==160 &&Dp==300)
{
printf("Shaft diameter (d) in mm = 40 \nShaft_load in kN = 8 \nBearing_No = 6008 \nBearing_bore_diameter in
mm = 40 \nBearing_outside_diameter in mm = 68 \nBearing_width in mm = 15 \nBearing static load (C0) in kN
= 11.60 \nBearing Dynamic load (C) in kN = 16.80 \nPermissible_rpm_for_Grease_lubrication = 9500
\nPermissible_rpm_for_Oil_lubrication = 12000 \n");
d=40;
}
else if(Bb==250 &&Dp==250)
{
printf("Shaft diameter (d) in mm = 45 \nShaft_load in kN = 9 \nBearing_No = 6009 \nBearing_bore_diameter in
mm = 45 \nBearing_outside_diameter in mm = 75 \nBearing_width in mm = 16 \nBearing static load (C0) in kN

8. xvii

= 14.60 \nBearing Dynamic load (C) in kN = 20.80 \nPermissible_rpm_for_Grease_lubrication = 9000
\nPermissible_rpm_for_Oil_lubrication = 11000 \n");
d=45;
}
else if(Bb==200 &&Dp==300)
{
printf("Shaft diameter (d) in mm = 45 \nShaft_load in kN = 9 \nBearing_No = 6009 \nBearing_bore_diameter in
mm = 45 \nBearing_outside_diameter in mm = 75 \nBearing_width in mm = 16 \nBearing static load (C0) in kN
= 14.60 \nBearing Dynamic load (C) in kN = 20.80 \nPermissible_rpm_for_Grease_lubrication = 9000
\nPermissible_rpm_for_Oil_lubrication = 11000 \n");
d=45;
}
else if(Bb==160 &&Dp==350)
{
printf("Shaft diameter (d) in mm = 45 \nShaft_load in kN = 9 \nBearing_No = 6009 \nBearing_bore_diameter in
mm = 45 \nBearing_outside_diameter in mm = 75 \nBearing_width in mm = 16 \nBearing static load (C0) in kN
= 14.60 \nBearing Dynamic load (C) in kN = 20.80 \nPermissible_rpm_for_Grease_lubrication = 9000
\nPermissible_rpm_for_Oil_lubrication = 11000 \n");
d=45;
}
else if(Bb==300 &&Dp==250)
{
printf("Shaft diameter (d) in mm = 50 \nShaft_load in kN = 10 \nBearing_No = 6010 \nBearing_bore_diameter
in mm = 50 \nBearing_outside_diameter in mm = 80 \nBearing_width in mm = 16 \nBearing static load (C0) in
kN = 16.00 \nBearing Dynamic load (C) in kN = 21.60 \nPermissible_rpm_for_Grease_lubrication = 8500
\nPermissible_rpm_for_Oil_lubrication = 10000 \n");
d=50;
}
else if(Bb==160 &&Dp==400)
{
printf("Shaft diameter (d) in mm = 50 \nShaft_load in kN = 10 \nBearing_No = 6010 \nBearing_bore_diameter
in mm = 50 \nBearing_outside_diameter in mm = 80 \nBearing_width in mm = 16 \nBearing static load (C0) in
kN = 16.00 \nBearing Dynamic load (C) in kN = 21.60 \nPermissible_rpm_for_Grease_lubrication = 8500
\nPermissible_rpm_for_Oil_lubrication = 10000 \n");
d=50;
}
else if(Bb==370 &&Dp==200)
{

9. xviii

printf("Shaft diameter (d) in mm = 55 \nShaft_load in kN = 11 \nBearing_No = 6011 \nBearing_bore_diameter
in mm = 55 \nBearing_outside_diameter in mm = 90 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 21.20 \nBearing Dynamic load (C) in kN = 28.10 \nPermissible_rpm_for_Grease_lubrication = 7500
\nPermissible_rpm_for_Oil_lubrication = 9000 \n");
d=55;
}
else if(Bb==250 &&Dp==300)
{
printf("Shaft diameter (d) in mm = 55 \nShaft_load in kN = 11 \nBearing_No = 6011 \nBearing_bore_diameter
in mm = 55 \nBearing_outside_diameter in mm = 90 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 21.20 \nBearing Dynamic load (C) in kN = 28.10 \nPermissible_rpm_for_Grease_lubrication = 7500
\nPermissible_rpm_for_Oil_lubrication = 9000 \n");
d=55;
}
else if(Bb==200 &&Dp==350)
{
printf("Shaft diameter (d) in mm = 55 \nShaft_load in kN = 11 \nBearing_No = 6011 \nBearing_bore_diameter
in mm = 55 \nBearing_outside_diameter in mm = 90 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 21.20 \nBearing Dynamic load (C) in kN = 28.10 \nPermissible_rpm_for_Grease_lubrication = 7500
\nPermissible_rpm_for_Oil_lubrication = 9000 \n");
d=55;
}
else if(Bb==300 &&Dp==300)
{
printf("Shaft diameter (d) in mm = 60 \nShaft_load in kN = 12 \nBearing_No = 6012 \nBearing_bore_diameter
in mm = 60 \nBearing_outside_diameter in mm = 95 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 23.20 \nBearing Dynamic load (C) in kN = 29.60 \nPermissible_rpm_for_Grease_lubrication = 6700
\nPermissible_rpm_for_Oil_lubrication = 8000 \n");
d=60;
}
else if(Bb==200 &&Dp==400)
{
printf("Shaft diameter (d) in mm = 60 \nShaft_load in kN = 12 \nBearing_No = 6012 \nBearing_bore_diameter
in mm = 60 \nBearing_outside_diameter in mm = 95 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 23.20 \nBearing Dynamic load (C) in kN = 29.60 \nPermissible_rpm_for_Grease_lubrication = 6700
\nPermissible_rpm_for_Oil_lubrication = 8000 \n");
d=60;
}
else if(Bb==160 &&Dp==400)

10. xix

{
printf("Shaft diameter (d) in mm = 60 \nShaft_load in kN = 12 \nBearing_No = 6012 \nBearing_bore_diameter
in mm = 60 \nBearing_outside_diameter in mm = 95 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 23.20 \nBearing Dynamic load (C) in kN = 29.60 \nPermissible_rpm_for_Grease_lubrication = 6700
\nPermissible_rpm_for_Oil_lubrication = 8000 \n");
d=60;
}
else if(Bb==370 &&Dp==250)
{
printf("Shaft diameter (d) in mm = 65 \nShaft_load in kN = 13 \nBearing_No = 6013 \nBearing_bore_diameter
in mm = 65 \nBearing_outside_diameter in mm = 100 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 25.00 \nBearing Dynamic load (C) in kN = 30.70 \nPermissible_rpm_for_Grease_lubrication = 6300
\nPermissible_rpm_for_Oil_lubrication = 7500 \n");
d=65;
}
else if(Bb==250 &&Dp==350)
{
printf("Shaft diameter (d) in mm = 65 \nShaft_load in kN = 13 \nBearing_No = 6013 \nBearing_bore_diameter
in mm = 65 \nBearing_outside_diameter in mm = 100 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 25.00 \nBearing Dynamic load (C) in kN = 30.70 \nPermissible_rpm_for_Grease_lubrication = 6300
\nPermissible_rpm_for_Oil_lubrication = 7500 \n");
d=65;
}
else if(Bb==160 &&Dp==500)
{
printf("Shaft diameter (d) in mm = 65 \nShaft_load in kN = 13 \nBearing_No = 6013 \nBearing_bore_diameter
in mm = 65 \nBearing_outside_diameter in mm = 100 \nBearing_width in mm = 18 \nBearing static load (C0) in
kN = 25.00 \nBearing Dynamic load (C) in kN = 30.70 \nPermissible_rpm_for_Grease_lubrication = 6300
\nPermissible_rpm_for_Oil_lubrication = 7500 \n");
d=65;
}
else if(Bb==300 &&Dp==350)
{
printf("Shaft diameter (d) in mm = 70 \nShaft_load in kN = 14 \nBearing_No = 6014 \nBearing_bore_diameter
in mm = 70 \nBearing_outside_diameter in mm = 110 \nBearing_width in mm = 20 \nBearing static load (C0) in
kN = 31.00 \nBearing Dynamic load (C) in kN = 37.70 \nPermissible_rpm_for_Grease_lubrication = 6000
\nPermissible_rpm_for_Oil_lubrication = 7000 \n");
d=70;
}

11. xx

else if(Bb==200 &&Dp==450)
{
printf("Shaft diameter (d) in mm = 70 \nShaft_load in kN = 14 \nBearing_No = 6014 \nBearing_bore_diameter
in mm = 70 \nBearing_outside_diameter in mm = 110 \nBearing_width in mm = 20 \nBearing static load (C0) in
kN = 31.00 \nBearing Dynamic load (C) in kN = 37.70 \nPermissible_rpm_for_Grease_lubrication = 6000
\nPermissible_rpm_for_Oil_lubrication = 7000 \n");
d=70;
}
else if(Bb==370 &&Dp==300)
{
printf("Shaft diameter (d) in mm = 75 \nShaft_load in kN = 15 \nBearing_No = 6015 \nBearing_bore_diameter
in mm = 75 \nBearing_outside_diameter in mm = 115 \nBearing_width in mm = 20 \nBearing static load (C0) in
kN = 33.50 \nBearing Dynamic load (C) in kN = 39.70 \nPermissible_rpm_for_Grease_lubrication = 5300
\nPermissible_rpm_for_Oil_lubrication = 6700 \n");
d=75;
}
else if(Bb==250 &&Dp==400)
{
printf("Shaft diameter (d) in mm = 75 \nShaft_load in kN = 15 \nBearing_No = 6015 \nBearing_bore_diameter
in mm = 75 \nBearing_outside_diameter in mm = 115 \nBearing_width in mm = 20 \nBearing static load (C0) in
kN = 33.50 \nBearing Dynamic load (C) in kN = 39.70 \nPermissible_rpm_for_Grease_lubrication = 5300
\nPermissible_rpm_for_Oil_lubrication = 6700 \n");
d=75;
}
else if(Bb==200 &&Dp==500)
{
printf("Shaft diameter (d) in mm = 75 \nShaft_load in kN = 15 \nBearing_No = 6015 \nBearing_bore_diameter
in mm = 75 \nBearing_outside_diameter in mm = 115 \nBearing_width in mm = 20 \nBearing static load (C0) in
kN = 33.50 \nBearing Dynamic load (C) in kN = 39.70 \nPermissible_rpm_for_Grease_lubrication = 5300
\nPermissible_rpm_for_Oil_lubrication = 6700 \n");
d=75;
}
else if(Bb==300 &&Dp==400)
{
printf("Shaft diameter (d) in mm = 80 \nShaft_load in kN = 16 \nBearing_No = 6016 \nBearing_bore_diameter
in mm = 80 \nBearing_outside_diameter in mm = 125 \nBearing_width in mm = 22 \nBearing static load (C0) in
kN = 40.00 \nBearing Dynamic load (C) in kN = 47.50 \nPermissible_rpm_for_Grease_lubrication = 5000
\nPermissible_rpm_for_Oil_lubrication = 6300 \n");
d=80;

12. xxi

}
else if(Bb==250 &&Dp==450)
{
printf("Shaft diameter (d) in mm = 85 \nShaft_load in kN = 17 \nBearing_No = 6017 \n");
d=85;
}
else if(Bb==370 &&Dp==350)
{
printf("Shaft diameter (d) in mm = 90 \nShaft_load in kN = 18 \nBearing_No = 6018 \n");
d=90;
}
else if(Bb==300 &&Dp==450)
{
printf("Shaft diameter (d) in mm = 90 \nShaft_load in kN = 18 \nBearing_No = 6018 \n");
d=90;
}
else if(Bb==250 &&Dp==500)
{
printf("Shaft diameter (d) in mm = 90 \nShaft_load in kN = 18 \nBearing_No = 6018 \n");
d=90;
}
else if(Bb==300 &&Dp==500)
{
printf("Shaft diameter (d) in mm = 100 \nShaft_load in kN = 22 \nBearing_No = 6020 \n");
d=100;
}
else
printf("Out of range. \n");
rh=d;
printf("Radius of hub (rh) in mm = %d \n", rh);
w=(float)d/4;
printf("Key width (w) in mm = %f \n", w);
h=(float)2*w/3;
printf("Key height (h) in mm = %f \n", h);
Te=(float)52.8*3.14*d*d*d/16/1000000;
printf("Equivalent torque acting on shaft (Te) in kNm = %f \n", Te);
}
else
{

13. xxii

printf("Unloading of bucket centrifugally is not possible. \n");
}
}
getch();
}







SAMPLE COMPUTATION:
1. For Bucket Elevator Design:
Input:
Lifting Height(H) in m = 3
Wheat Density in Tonne/m3 = 0.768
No of Belt ply (Np) = 4
Efficiency = 0.85
Want to enter Capacity (Q)? Enter 1 for yes and 0 for no - 1
Capacity (Q) in Tonne/hr = 30
Want to enter Pulley diameter (Dp)? or Want to use equation Dp=125*Np? Enter 1 for yes and 0 for no – 0

Output:
Ratio (i0/tb) in m-1 = 5.0
Pulley diameter (Dp) in mm = 500
Pulley radius (rp) in m = 0.250000
Belt velocity (v) in m/s = 3.2
Rotation speed of pulley (N) in rpm = 122.292992
Pole Distance (hp) in m = 0.073231
Unloading of bucket centrifugally is possible.
Bucket width (B) in mm = 250
Belt width (Bb) in mm = 300
Bucket pitch (tb) in mm = 400
Bucket volume in mm3 = 21.000000
Tension T3 in N = 957.946533
Tension T4 in N = 319.315521

14. xxiii

Safety factor k = 10
Required no. of belt plies (i) = 0.580574
Pulley Resistance (W) in N = 591.325012
Motor power (P) in kW = 2.782706
Pulley width (Bp) in mm = 375.000000
Rim thickness (t) in mm = 4.000000
Belt length (L) in m = 7.570000
Belt Tension (T) in Nm = 159657.750000
Permissible Tension (f) in belt per mm width in N/mm = 3.193155
Projection of bucket (b) in mm = 156
Depth of Bucket (h1) in mm = 156
H2 in mm = 92.98
No. of Bucket (n) = 18.925001
Shaft diameter (d) in mm = 100
Shaft_load in kN = 22
Bearing_No = 6020
Radius of hub (rh) in mm = 100
Key width (w) in mm = 25.000000
Key height (h) in mm = 16.666666
Equivalent torque acting on shaft (Te) in KNm = 10.362000

2. For Bucket Elevator Prototype:
Inputs:
Lifting Height(H) in m = 1
Wheat Density in Tonne/m3 = 0.768
No of Belt ply (Np) = 2
Efficiency = 0.85
Want to enter Capacity (Q)? Enter 1 for yes and 0 for no - 0
Enter value of ratio (io/tb)- (1.3, 2.0, 3.24, 5.0, 8.0, 12.6) in m-1 = 2.0
Want to enter Pulley diameter (Dp)? or Want to use equation Dp=125*Np? Enter 1 for yes and 0 for no - 1
Pulley diameter (Dp) in mm = 200

Output:
Capacity (Q) in Tonne/hr = 13.271040
Pulley radius (rp) in m = 0.100000
Belt velocity (v) in m/s = 3.2
Rotation speed of pulley (N) in rpm = 305.732483
Pole Distance (hp) in m = 0.001875

15. xxiv

Unloading of bucket centrifugally is possible.
Bucket width (B) in mm = 160
Belt width (Bb) in mm = 200
Bucket pitch (tb) in mm = 320
Bucket volume in mm3 = 13.440000
Tension T3 in N = 234.262802
Tension T4 in N = 78.087601
Safety factor k = 10
Required no. of belt plies (i) = 0.212966
Pulley Resistance (W) in N = 144.606674
Motor power (P) in kW = 0.680502
Pulley width (Bp) in mm = 250.000000
Rim thickness (t) in mm = 3.000000
Belt length (L) in m = 2.628000
Belt Tension (T) in Nm = 15.617
Permissible Tension (f) in belt per mm width in N/mm = 1.171314
Projection of bucket (b) in mm = 105
Depth of Bucket (h1) in mm = 105
H2 in mm = 47.08
No. of Bucket (n) = 8.212500
Shaft diameter (d) in mm = 30
Shaft_load in kN = 6
Bearing_No = 6006
Bearing_bore_diameter in mm = 30
Bearing_outside_diameter in mm = 55
Bearing_width in mm = 13
Bearing static load (C0) in kN = 8.30
Bearing Dynamic load © in kN = 13.30
Permissible_rpm_for_Grease_lubrication = 12000
Permissible_rpm_for_Oil_lubrication = 15000
Radius of hub (rh) in mm = 30
Key width (w) in mm = 7.500000
Key height (h) in mm = 5.000000
Equivalent torque acting on shaft (Te) in KNm = 0.279774

16. xxv

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17. xxvi

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