Transmissions Flashcards
1
Q
What are the main functions of a gearbox?
A
- transmit power from the prime mover to shaft.
- allow for variation in speed and power
- allow for changes between ahead and astern thrust.
2
Q
What are the main components of a gearbox?
A
- Pinions
- wheels
- shafts
- bearings
3
Q
How do you change the speed of a gear train
A
Add wheels to train if different sizes smaller to higher the speed and larger to slow it down the max ratio is 15:1
4
Q
How do you change direction of a gear train?
A
Add another wheel
5
Q
State 4 type of gear profile
A
- straight spur
- helical
- double helical
- worm wheel
6
Q
State 3 methods of gear reduction
A
- single gear reduction
- double gear reduction
- doubke gear reduction tandem
