LamaLo Technology Inc.
Propulsion
Shaft Alignment
Marine propulsion shaft alignment is a core
part of LLT’s business. With respect to existing alignment problems, we take a
Systems Engineering approach. All aspects of the shaftline alignment are
investigated by using a combination of analytical modeling, on-site measurements,
documentation review, and analysis of the operating environment, bearing/seal
design and shipyard construction practices. A least-cost solution is sought.
Alignment services include the following:
Theoretical Modeling
Development
of Alignment Criteria: bearing reactions, bearing wear, bending stress, shaft
slope, etc.
Determination
of Influence Coefficients: change in bearing load for unit displacement of each
bearing position
Determination
of Prescribed Alignment Condition: bearing offsets and reactions, and shaft
stress, deflection, shear stress, and relative slope.
Specification
of Alignment Procedures: sequence and method of installation, and gap/sag
values if applicable
Measurements
Bearing
Reactions using the strain gauge technique and Jack-up Method
Bearing
offsets are estimated from the measured reactions and the influence
coefficients.
Comparisons
are made of the measured condition relative to the prescribed condition and the
alignment criteria.
Recommendations
for adjustments to bearing offsets, if required, are provided on-site. The most
cost-effective solution is sought.
On-Line
Monitoring Systems designed specifically for each vessel are offered. Such
systems can result in significant cost savings by reducing maintenance costs,
and the inspection frequency of the propeller shafting and bearings
Analysis and Reporting
Results are provided
on-board the vessel. This includes an assessment as to the alignment condition
and what, if any, action is required. A formal Engineering report is submitted
within two weeks of the completion of the tests.
Cost
Fixed-price or cost plus quotes are
provided.