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Advanced Gearbox Development
The Problem:Current dynamic component test systems unable to
accommodate more than a single type of transmission.
Manualpositioning and configuration changes are limited and
cumbersome.
The RedViking Solution:Custom designed gearbox and actuator
assembly to automatically apply thrust loads to transmission, as
well as torqueresistance or rotational load with automated position
and configuration changes. New system tests multiple types
oftransmissions.
Advanced Gearbox Development
The customers current powertrain test system did not accommodate
the geometries, loads and speeds for their expandingtesting
requirements. RedViking worked with the customer to design a custom
gearbox and actuator assembly toaccommodate multiple transmissions
at different interface angles through the use of fixed and dynamic
gearbox sections.
The new patent pending design allowed the test system to
accommodate multiple types of main transmissions withautomatic
adjustment to the specific test article.
Smaller OTS motors, identical to those used for the test stand
inputs, were integrated rather than using one large, moreexpensive
custom motor. The resulting 5X speed increasing gearbox and
actuator assembly accommodates a wide range oftorque and speed set
points and includes automatic test article connection and test
profile identification.
Key PointsKey Points
Advanced Gearbox Development:
vanced Gearbox Development | RedViking Engineering
http://www.redvikingeng.com/project-overview/advanced-gearbox-dev...
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7/28/2019 Advanced Gearbox Development _ RedViking
Engineering
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Accurate, repeatable data acquisition for advanced analysis
Speed increaser with 1:4.25 ratio
6 piece construction
2 fixed input 90 gearboxes (elbows)
2 fixed bearing support sections
1 pivoting speed increaser gearbox
1 thrust actuator assembly
Thrust actuator has hydraulically powered vertical movement with
position and load feedback
Thrust actuator contains tooling for automatic connection to a
transmission mast output regardless of orientation
Speed increaser and thrust actuator electrically pivot and
hydraulically lock into multiple locations
Bearing stanchions support the center pivoting gearbox and allow
for rotational adjustment
Absorbed power is split and transferred through elbow gearboxes
to (2) identical absorber dynamometers
Easily interchangeable gearbox input shafts with torque
transducers of various ranges
Completely integrated jet lubrication delivery system
Integrated gearbox condition monitoring instrumentation
vibration, temperature, fluid level
Automatic connection and integrated actuators allow for
automatic torque and thrust calibration using acalibration
fixture
Designed for 20,000+hours of service
Custom designed, ground gears with performance enhancing micro
geometry and isotropic superfinish
Projects
Advanced Gearbox DevelopmentFlexible Transmission Test
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vanced Gearbox Development | RedViking Engineering
http://www.redvikingeng.com/project-overview/advanced-gearbox-dev...
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