Page 21 - ConveyorBeltMaintenanceManual2010

19
INSTALLATION, MAINTENANCE & TROUBLESHOOTING GUIDE
i n s t a l l a t i o n
Impact of material being loaded on the belt is often the cause of severe cuts and gouges. The degree of impact can be
lessened to some extent by providing a cushion in the form of rubber covered disc type or semi-pneumatic idlers, which also
tend to prevent material from crowding under the skirt boards at the instant of impact (Fig. 26).
The use of a “Grizzly,” a slightly fanned row of bars, at the bottom of the transfer chute reduces wear on the belt. It distributes
the impact of large lumps by allowing the fines to fall onto the belt first to act as a cushion. The fan shape of the “Grizzly” in
the direction of travel prevents jamming of the lumps (Fig. 27).
A “V-slot” cut in the bottom of the chute is another very satisfactory method of allowing fines to fall on the belt before the lumps
and thereby reducing belt wear at this point (Fig. 28).
Fig. 27
Grizzly Chute
Fig. 26
Deflection instantaneous
and localized
Belt cushioned by
semi-pneumatic or
rubber disc type idlers –
preventing damage to belt
No opening at skirt upon
impact of material
Semi-pneumatic or rubber disc type idler arrangement,
placed as close together as possible
Fig. 28
V-Slot Chute