Nomencluature

Item Name / Term Used	Function / Description
Angle of repose	Angle to the horizontal which a freely formed pile makes when poured from above.
Angle of surcharge	Angle to the horizontal which a material assumes win at rest on a moving belt.
Head/drive/discharge pulley	To introduce power to the belt; material is discharged over this pulley.
Material trajectory	Arc scribed by material discharged over head pulley.
Tail pulley	Belt support.
Snub pulley	To increase belt angle of wrap around drive pulley.
Take-up pulley	Mounted on sliding frame to maintain required tension in belt.
Bend pulley	Deflects belt around angles greater than 40 degrees.
Feed/loading chute	Contains feed material; centralises load on belt; imparts material velocity in direction of belt travel.
Skirt plates	Integral part of feed chute; contains material on belt while accelerating to belt speed.
Skirt rubber	Adjustable wearing strips attached to skirt plate; seal between belt and skirt plate.
Impact idlers	Closely spaced idlers at load point; supports belt and absorbs impact.
Impact bed	Continuous low-friction wearing strip at load point; supports belt and absorbs impact.
Transition idlers	Supports belt through transition from flat pulley to full idler trough angle.
Troughing/carrying idlers	Supports loaded belt; maintains desired belt profile and required trough angle.
Troughing angle	Angle of wing idlers to horizontal viewed in cross-section through carrying side belt.
Return idlers	Supports return belt; maintains desired belt profile.
Carrying-side/strand belt	Upper or top belt profile which carries transported material.
Return-side/strand belt	Lower or bottom belt profile, not usually loaded.
Load stream	Material in transit on carrying side of belt.
Head/discharge chute	Collects, contains and guides discharged material to downstream equipment.
Primary belt scraper	Contact scraper mounted across head pulley; removes product from belt.
Secondary belt scraper	Contact scraper mounted after head pulley; removes residual product from belt.
Return belt plough	Contact scraper mounted before tail pulley on return belt; prevents material being caught between belt and pulley.
Take-up carriage	Structural frame incorporating guides; retains and guides moving take-up assembly.
Take-up trolley	Moving structural frame supporting take-up pulley; vertical or horizontal orientation.
Belt splice	Method of joining two belt ends; hot or hold vulcanising or mechanical splice.
Low speed coupling	Mechanical component connecting gearbox output shaft to pulley shaft.
High speed coupling	Mechanical/hydro-mechanical component connecting motor to gearbox input shaft.
Reducer/gearbox	Torque converting device connecting drive motor to drive pulley.
Drive motor
Baseplate	Structural frame onto which drive motor, gearbox and coupling are mounted.
Drive unit	Conveyor drive assembly incorporating motor, gearbox, high and low speed couplings, baseplate.
Torque arm
Pulley bearings	Bearing assemblies mounted on pulley shaft.
Plummer blocks	Pulley bearing support housings; secures bearings/pulleys to structural support frame.
Sole plate	Steel plate with jacking bolts; mounted between Plummer block and support frame; facilitates the alignment of pulley.
Head frame	Structural frame supporting drive/head pulley and scrapers.
Tail frame	Structural frame supporting tail pulley.
Brake unit	Disc or caliper unit mounted on pulley shaft; forced breaking of belt conveyor.
Conveyor stringers/support	Light frame supporting carrying and return idlers between head and tail pulleys.
Deck plates	Platework mounted on stringers between carrying and return belt; prevents spillage falling on return belt.
Foundations	Supports for conveyor stringers, head and tail frames; concrete.
Holding down bolts	Anchor bolts cast into foundations; secures stringers to foundations.
Dedusting	Forced evacuation of airborne dust in chute is and skirts.
Pulley lagging	Rubberised cover applied to pulley; increases friction between belt and pulley.
Convex curve	Vertical curve in the conveyor profile.
Convex/concave radius	Radius of vertical curve in the conveyor profile.
Concave curve	Vertical curve in the conveyor profile.
Horizontal radius	Horizontal curve in conveyor - plan view.
Belt speed	Maximum continuous belt speed in loaded condition.
Material characteristics / properties	Material type, classification, characteristics, behaviour, specification.