1 symbols used, 7applications – Lenze DSD User Manual
Page 134
7
Applications
7.10
Chain conveyor
134
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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Required torque of the application (with losses)
Provided that the friction torque of the application is proportional to the torque to be transmitted,
the torque of the application can be calculated with the following equation:
[7-117] Equation 11: Required torque of the application (with losses)
Tip!
Further equations to complete the calculations required for an application can be found in
the chapter "
".
7.10.1.1
Symbols used
M
th,App
M
App
M
App
ω
ω
-------
1
η
Chn
------------
1
–
⋅
⋅
+
=
Symbol
Description
Dimension unit
a
Acceleration (translatory)
m/s
2
d
Diameter of the drive roll
mm
F
μ
Friction force
N
F
g
Lifting force
N
F
add
Additional force (e. g. backing force)
N
g
Gravitational acceleration (g = 9.81 m/s
2
)
m/s
2
J
Moment of inertia of driving roller
kgm
2
J
sum
Total moment of inertia
kgm
2
l
Conveying length
m
m
L
Mass of the payload
kg
m’
L
Mass of the line load
kg/m
m
Chn
Mass of the transport chain
kg
m
add
Additional mass (e. g. by deflectors)
kg
M
App
Required torque of the application (without losses)
Nm
M
th,App
Required torque of the application (with losses)
Nm
M
sds
Stationary torque
Nm
s
Path (translatory)
m
v
Speed (translatory)
m/s
α
Angular acceleration
rad/s
2
β
Angle of tilt
°
η
Chn
Chain efficiency
ϕ
Angle
rad
μ
Gdn
Coefficient of friction of the chain to the supporting surface
μ
L
Coefficient of friction of the load to the chain
ω
Angular velocity
rad/s