Basics of Conveyor Belt Design

A foundational overview of the engineering principles and practical considerations required for effective conveyor belt design. Covers the entire development process — from initial site layout and bulk material characterization to complex mechanical calculations and structural requirements.

1. Initial Steps Before Calculation

• Bulk material properties and categorisation

• Historical information and client preference

• How a conveyor works — basic functionality

• Site layout and conveyor arrangements

• Conveyor components (drives, pulleys, belts, idlers, take-ups)

• Special features (belt feeders, trippers, shuttles, multiple feeds)

• Drive types (electric, hydraulic, gearboxes, fluid couplings)

• Drive and take-up location

• Ancillaries (cleaners, ploughs, weighers, magnets, samplers)

• Chute design impacts

• Dust management and lubrication

• Typical pitfalls and errors

2. Conveyor Mechanical Design

• Manual and computer calculations

• Interpreting and iterating outputs

• Verifying correctness

3. Specific Calculations

• Driving force and power requirement

• All possible resistances (frictional, inertial, gravitational)

• Inertia resistance during charging/accelerating

• Frictional resistance — feed channel, breast board, wrapping resistance

• Bearing resistance of bend conveyor

• Frictional resistance of belt cleaners (primary and secondary)

• Plow discharger resistance

• Buffer-bed and conveyor belt resistance

4. Belt Tensions

• Minimum tension for non-slip and droop

• Torque and tension for pulleys

• Belt selection calculation

• Counterweight tensioning

5. Mechanical and Thermal Power

6. Load Calculation for Idlers/Rollers

7. Calculation of Braking and Backstop

8. Selection Calculation for Coupling/Hydraulic Coupling

9. Conveyor Structural Design

• What the structure provides

10. Belt Tracking

• Causes and management

11. Belt Splicing

• Different splice types for different belts

• Provisions for belt pulling and splicing

12. Safe Design

• Responsibilities for safety

• WHS impacts and considerations

13. Conveyor Electrical and Control

• Motor management — DOL, soft start, VFD, variable resistance

• Control set-up

• Managing faulty operation — belt drift, rip, temperature, vibration, idler failure

14. Design for Maintenance

• Component life and spares holding

• Special tools for maintenance

• Methods of monitoring and predicting component life

Mechanical Engineers, Bulk Materials Handling Engineers, Plant Engineers, Design Engineers, Project Engineers, Maintenance Engineers, Reliability Engineers, Process Engineers