Lust CDA3000 - Example 1: Trolley Drive for Gantry Crane

Engineering Guide CDA3000
2-15
2 Drive definition
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2.4.1 Example 1:
Trolley drive for
gantry crane
Because of the narrow track width the trolley has a central drive powering
a running wheel on each side. The running wheels are coupled together
by a shaft. The drive system is a four-pole helical gearbox motor with
brake.
Figure 2.2 Standard trolley drive with geared motor
Known data:
Intrinsic weight of the trolley 5 t
Lifting weight 10 t
Running speed 30 m/min.
Two wheels are driven
Wheel diameter 315 mm
Journal diameter 80 mm
Friction pairing (rail/wheel)Steel/steel
Transmission gear z1=18
z2=34
Efficiency of the drive 80%
Mass moment of inertia of the running wheels
and the shaft 0.85 kgm²
Acceleration and braking time 1.5 s
Max. factor for starting torque 1.25