2-20
Engineering Guide CDA3000
2 Drive definition
2.4.2 Example 2: Belt
turning station
for truck engine
distribution
The indexing table for the belt turning station is designed to distribute the
truck engines across two different conveyor belts. The indexing table is
incremented in steps of 90°.
The rotating upper section is supported by a slewing ring. Slewing rings
permit a highly compact design combined with a low center of gravity
(only one bearing to absorb all forces and moments).
The size of the bearing support means that correspondingly very high
radial and axial forces and moments are absorbed.
(1) Truck engines
Figure 2.9 Belt turning station
Known data:
Mass of indexing table with slewing ring etc. 130 kg
Indexing table diameter 1600 mm
Mass of truck engine 500 kg
Distance of truck from pivot point 600 mm
Max. cycle time for 90° 1.4 s
Acceleration/deceleration time 0.2 s
Ball rim z1=29
z2=180
Efficiency 90%
Motor nominal speed 1440 rpm
Positioning accuracy need only be approx. ± 2 mm, because mechanical
indices are used.
(1)
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