|
Crawler Tractors:
Maximum drawbar pull can be exerted at all times over the roughest operating
conditions. For example, in pusher work, the operator merely has to make contact
with the equipment being pushed and open the throttle. As the load increases or
decreases, the varying torque required to handle the load is selected and exerted
automatically by the torque converter. The hydraulic connection between the driving
and driven parts smoothes out shocks and jolts, provides smooth, sustained acceleration
with the engine always working in its most efficient range. |
Hoists & Winches:
In winches, hoists or cranes the automatic torque adjustment provided by the torque
converter permits holding the load in mid-air with the throttle alone, without
"bobbing". In heavy-duty service such as logging yarders, the converter
automatically increases line pull as the load causes line speed to be reduced, preventing
slacking and jerking. Smooth load pick up assures a faster work cycle with no
interruptions for clutches or gear changing. A freewheel for boom-lowering is
optional. |
|
Slush Pumps:
The hydraulic torque converter when applied to reciprocating pumps such as oil
field slush pumps permit operation through a wide range of volume versus pressure while
using the maximum size liner. In addition to minimizing the impact loads on rods and
bearings, the elimination of liner changes makes the pump continuously available for more
operating hours. Small diameter chain sprockets replace the larger and expensive
"V" bent sheaves providing a more compact unit for easier transportation.
The converter permits the engine to operate in the more efficient speed range with
consequent economies in fuel consumption. |
Shunting Locomotives:
Diesel-electric locomotives produce a continually-varying torque to the wheels.
The use of a three-stage torque converter provides a good tractive effort curve
when compared to a diesel-electric set. For use on negative grades where braking may
be a problem, the torque converter can be furnished with a freewheel to provide automatic
downhill braking. This freewheel provides converter braking effort up to 90% engine
rated horsepower plus the additional friction braking horsepower of the engine. |
|
Excavators:
Excavators and other equipment which combine operations like hoisting, swinging and
crowding are good applications for three-stage torque converters. The hydraulic
torque converter smoothly delivers from two to three times the effective prime mover
torque for hoist and crowd loads, then automatically speeds up to the maximum desired
swing speed where an output shaft governor regulates the output speed to the desired
setting and thereby reduces power output to the minimum requirement. |
Conclusions:
Twin Disc's complete line of Hydraulic Torque Converters can meet the requirements
of diesel installations from 90 to 3500 horsepower. Three-Stage, Type Four, and
other models come in a wide range of types, sizes and capacities. For more
information about any Twin Disc Torque Converter line, contact Mill Log today! |
