Start and Stops The fluid coupling and brake positively control
starting and stopping. The fluid coupling acts as a cushioning
device that helps dampen jerking of the conveyor chain
during ordinary operation. In addition, the fluid coupling tapers
the loads starting and stopping characteristics so as to give
a ramp effect on starting and stopping.
Precise control of starting and stopping is especially important
on the turntable where the load must be accurately positioned
for strapping cans.
Fluid Couplings can be used in applications where the drive
is required to retard, hold or drive the load. These
high slip applications generate a lot of heat which can be dissipated
by 2 or more air cooled couplings.
The photo shows three fluid couplings whose housings (impellors)
are connected by a pair of "v" belts. The finned housings
rotate at motor speed and provide optimum cooling. The three fluid
couplings output shafts (runner) and their pulleys are connected
by a timing belt to a bull gear mounted on the right angle reducer.