The roller conveyor can be installed with one end
lower than the other to take advantage of gravity. It can
also be installed level and the load pushed along
manually. Several sections can be put together and
developed into a continuous system for movement of
material. The conveyor can be used on piers, in
storerooms, or wherever a steady flow of supplies is
desired. A drop of one-half inch per foot is usually
required to keep an object in motion on the rollers.
Folding stands maybe used when it is necessary to clear
obstructions on the deck or to pass through doors.
Accessories for horizontal conveyors include turntables
and curved sections.
Roller conveyors with hinged gate actions are also
available for warehouse operations involving the
crossing of thoroughfares. (See figure 7-19.) If a roller
conveyor is used, the cargo should be moved slowly
enough to permit personnel at the end of the conveyor
to handle the boxes. A brake may be improved using a
belt as shown in figure 7-20.
Figure 7-18.--Cargo net sling.
The power-driven belt conveyor consists of an
endless belt mounted on a frame and driven by a pulley
The chute (fig. 7-21) provides a rapid means of
connected to a drive motor. The belt travels over a series
c o nvey i n g p a c k a g e s d ow n wa r d . T h e p r i n c i p a l
of rollers or a sliding bed. The belt conveyor can be used
application is aboard ships where a need exists to strike
to transport materials over a fixed path of travel up
inclines of as much as 25 degrees.
Figure 7-19.--Roller conveyor hinged gate multiphase warehouse operation.