mine transportation narendralamba38@gmail.com

1. BELT CONVEYOR SYSTEM
PRESENT BY:NARENDRA LAMBA

2. CONTENT
• INTRODUCTION
• THE BELT
• CARE OF BELT
• IDLERS AND SUPPORTING STRUCTURES
• COMPONENTS
• NUMERICAL ANALYSIS
• ADVANTAGES AND DISADVANTAGES

3. INTRODUCTION
• It is used for material transportation in surface
as well as underground mines.
• The principal types of conveyor used in mines
are:
1: Belt conveyor
2: Scraper conveyor
3: Shaker conveyor

4. THE BELT
• The belt is an endless thick flat strip of woven
cotton ,rayon or nylon fabric laid up in plies.
• The surface and sides are covered by rubber
plastic or pvc.
• The belt conveyor works on a straight roadway
which may be level , inclined or partially inclined.
• The speed of belt varies from 0.75m/s to 2.5m/s.
• Belt width
surface mines: 0.6m to 1.5 m
underground mines: 0.6 to 1m

5. CARE OF BELT
1: Protect belt from direct sunlight and keep it away
from steam pipes.
2: Use drive drums and delivery as well as tail end
drums of adequate size so that sharp bending
avoided.
3: During handling do not subject the belt to many
bending or wrappings.
4: Prevent the belt from rubbing against any prop.
5: For troughted belt inclination of side rollers
should not exceed 30 degree.

6. IDLERS AND SUPPORTING
STRUCTURES
• The idler is a long pulley moving on its own
axle and ball bearings and filled with grease.
• The belt travels on idlers placed an interval of
1.5m to 2.1m.
• It provides troughed shape for handling loose
and broken material.
• The idlers are supported on channel iron
framework and the members of such
framework are 3 to 4m long.

7. COMPONENTS
FIG: BELT CONVEYOR

8. NUMERICAL ANALYSIS
1: CAPACITY(T)= a*b*v
where T=the carrying capacity(tonne/sec)
a=avg. Cross sectional area of material(m^2)
b= the bulk density(te/m^3)
v= speed of conveyor belt
2: NUMBER OF PLIES=(RSmax)/BKt
where as Smax=Maximum belt tension in in kg
R= factor of safety in the range of 8-10
B=Belt width in cm
Kt=Ultimate tensile strength /cm

9. ADVANTAGES
• It can be applied in surface and
underground mines
• Noiseless operation.
• Large length of conveying path
• Lower power consumption.
• Long life.
• Adaptability to different types of
goods.
• Ability to carry almost any bulk
material
• High reliability of operation.
• Can transport material in any
direction.
DISADVANTAGES
• Continuous or periodic
monitoring of belt is necessary
• The normal design of a belt
conveyor is opened. If your
product needs to be
contained, covers and or drip
pans can become expensive
and cumbersome.
• If the material is sticky, belt
cleaning can be difficult and
generally not very successful.
• Heating effect of belt material

10. REFERENCES
1:D J DESHMUKH VOLUME 3
2: R R TATIYA
3: GOOGLE IMAGE

11. THANK YOU