CH5
Chapter 5 · Conveyors and continuous transport
From one suspended load to a steady flow: belt pull and what sizes the drive, the belt as a spring, load sharing by master-slave or droop, protection and start/stop sequencing, escalators, ropeways and the bucket-wheel excavator.
5 lessons· 150 min
- 01Belt pull: what sizes a conveyor driveConveyor types, the effective belt pull and the drive power (eqs. 5.1 and 5.2, Tutorial 5.1), the capstan limit, and the DIN 22101 resistances that tell you where the power goes.30 min
- 02Starting and stopping: the belt as a springWhy a long belt stretches when it starts, the tension wave that kills splices, ramp time against the belt's natural period, when an S-curve helps and when it hurts, backstops and regenerative declines.25 min
- 03Several motors on one belt: master-slave and droopWhy drives coupled through a belt fight, the master-slave (speed-torque) scheme of Tutorial 5.1, droop control (eq. 5.4), what each costs, and what happens when the fieldbus fails (Lab V).35 min
- 04Protection and sequencing along the linePull cords, belt-drift, zero-speed and blockage detectors; starting a chain of conveyors from the discharge end and stopping it from the feed end; and the drive needs of screws, bucket elevators, chain conveyors and pneumatic conveying.30 min
- 05Escalators, ropeways and the bucket-wheel excavatorPassenger transport where the drive is subordinate to safety: the escalator safety chain (Tutorial 5.2), redundant ropeway drives, and the bucket-wheel excavator, where many drives must match one material flow.30 min