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101

7Applications

7.12 Belt conveyors for unit loads

146

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

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7.12.1.1 Symbols used

7.12.2 Data for the entry

7.12.2.1 Diameter of the drive roll

7.12.2.2 Mass of the belt

Symbol Description Dimension unit

d Diameter of the drive roll mm

Friction force N

Lifting force N

add

Additional force (e. g. backing force) N

aux

Friction force by supporting rolls N

g Gravitational acceleration (g = 9.81 m/s

)m/s

J Moment of inertia of driving roller kgm

aux

Moment of inertia of supporting rollers kgm

sum

Total moment of inertia kgm

lConveying length m

Mass of the payload kg

m’

Mass of the line load kg/m

Blt

Mass of the belt kg

aux

Total mass of the supporting rolls kg

add

Additional mass (e. g. by deflectors) kg

App

Required torque of the application Nm

sds

Stationary torque Nm

v Material speed m/s

α Angular acceleration rad/s

β Angle of tilt °

Gdn

Coefficient of friction of belt/supporting surface

aux

Coefficient of friction belt/supporting rollers

Coefficient of friction of load/belt

Symbol Description

d Outside diameter of drive roll

Symbol Description

Blt

Mass of belt

• Value can be entered directly or calculated by the uniform load and conveying length.

"Uniform load mass (material handling technology)" calculator

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