| Changes in elevation of overhead conveyors
are easily accomplished with vertical curves in the conveyor track.
Anchor vertical curves are fabricated from high carbon steel rail and
particular care is exercised to form smooth uniform bends without
deforming the rail. They are usually shipped as single bends of a given
radius and degree. Two single bends are assembled on the job to form a
complete compound vertical curve, usually a piece of straight rail is
inserted between the bends to gain required elevation.
Large radius
curves and gradual inclines, where space permits, will reduce wear on
chain, trolley, and rail. Clearance between trolleys and track flange
should be checked as discussed in the section of Application
Engineering.
If the change in elevation of a vertical
curve is 5' 0" or more, incline or decline safety devices are
recommended to prevent conveyor runway in the event of chain breakage.
Incline safety devices (Fig.1 ) are lifted by the trolley side arm to
allow conveyor to operate up incline. However, they act as a positive
stop to prevent down hill travel. |
Conveyor Track
Formulas |
