Lenze DSD Manual de usuario descargar pdf (Pagina 151)

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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 151

7Applications

7.13 Belt conveyor for bulk material

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

The filling degree is the ratio of the actual to the theoretically filled surface of the belt:

[7-144] Equation 7: Filling degree

[7-145] Equation 8: Lifting force

The additional force takes the frictional resistance and inertial resistance occurring in different po-

sitions of the belt conveyor into consideration:

[7-146] Equation 9: Additional force

• The additional force (F

add

) results from:

• The inertial and frictional resistance between the material to be conveyed and the belt at the

feeding position

• Frictional resistance between the material to be conveyed and lateral chutes

• Frictional resistance by the belt cleaner

• Flexural resistance of the belt

Torque of the application

[7-147] Equation 10: Torque of the application

 Tip!

Further equations to complete the calculations required for an application can be found in

the chapter "Basic calculations

". ( 68)

opr

abt

---------- -

g βsin⋅⋅=

add

C1–()F

opr

⋅=

Shunt-force factor

The coefficients f apply to filling degrees of the belt in the range of ϕ = 0.7 ... 1.1:

l [m] 80 100 150 200 300 400 500 600 700 800 900 1000 1500 > 2000

C 1.92 1.78 1.58 1.45 1.31 1.25 1.20 1.17 1.14 1.12 1.10 1.09 1.06 1.05

App

sds

sum

α⋅+=

1 2 ... 146 147 148 149 150 151 152 153 154 155 156 ... 495 496

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Lenze DSD Manual de usuario Pagina 151

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