Lenze DSD - Manual (Page 149)

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
149
7 Applications
7.13 Belt conveyor for bulk material
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7.13 Belt conveyor for bulk material
The belt conveyor for bulk material transports the material to be conveyed by means of rotating
conveyor belts with tension carriers of a fabric or steel cable reinforcement and a rubber or plastic
cover. The conveyor belts are supported by idlers and are actuated or decelerated via drums by
means of friction. These conveyors are often designed as trough conveyors or pipe conveyors.
7.13.1 Calculations
For a belt conveyor for bulk material according to the drawing the following applies:
Total moment of inertia
[7-138] Equation 1: Total moment of inertia
Stationary torque
The stationary part of the torque consists of different individual forces:
[7-139] Equation 2: Stationary torque
The conveying force is calculated by the line loads, the conveying length, and the filling factor f (the
coefficient is a fictitious value):
[7-140] Equation 3: Conveying force
J
sum
m
L
m
Blt
+ ( )
d
2 1000 / mm m ⋅
------------------------------------
 
 
  2
J J
aux
+ + ⋅ =
M
sds
F
opr
F
g
F
add
+ + ( )
d
2 1000 / mm m ⋅
------------------------------------ ⋅ =
F
opr
l f g v
v
----- m’
aux
2 m’
Blt
m’
L
+ ⋅ ( ) β cos ⋅ + ( ) ⋅ ⋅ ⋅ ⋅ =