7applications – Lenze DSD User Manual
Page 145
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
145
7
Applications
7.12
Belt conveyors for unit loads
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Stationary torque
The stationary part of the torque consists of different individual forces:
[7-131] Equation 2: Stationary torque
[7-132] Equation 3: Friction force
[7-133] Equation 4: Lifting force
If the transported material drives against a limit stop (e. g. adjustment of the material), the force
F
add
is generated:
[7-134] Equation 5: Additional force
The friction of the rolls is taken into consideration by the friction force F
aux
:
[7-135] Equation 6: Friction force by run via rolls
The mass of the payload is calculated by the line load:
[7-136] Equation 7: Mass of the payload
Torque of the application
[7-137] Equation 8: Torque of the application
Tip!
Further equations to complete the calculations required for an application can be found in
the chapter "
".
M
sds
F
μ
F
g
F
add
F
aux
+
+
+
(
)
d
2 1000
/
mm m
⋅
------------------------------------
⋅
=
F
μ
m
L
m
Blt
2
-----------
+
g μ
Gdn
β
cos
v
v
-----
⋅ ⋅
⋅
⋅
=
F
g
m
L
g
β
sin
⋅ ⋅
=
F
add
m
add
g
ρ β
–
(
)
sin
ρ
cos
-------------------------- v
v
-----
with ρ arctan μ
L
=
⋅ ⋅
⋅
=
F
aux
m
aux
m
Blt
2
-----------
+
g μ
aux
v
v
-----
⋅ ⋅
⋅
=
m
L
m’
L
l
⋅
=
M
App
M
sds
J
sum
α
⋅
+
=