sun-and-planet gear
E594625
The sun-and-planet gear is a mechanical gearing system used in early steam engines to convert reciprocating motion into rotary motion, enabling continuous rotation without a traditional crank.
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
mechanical gearing system
ⓘ
mechanism ⓘ steam engine component ⓘ |
| advantage |
avoids use of a crank
ⓘ
provides continuous rotation from a beam engine ⓘ |
| alternativeTo | crank mechanism ⓘ |
| application |
beam engines
ⓘ
rotative steam engines ⓘ |
| associatedWith |
James Watt
NERFINISHED
ⓘ
Matthew Boulton NERFINISHED ⓘ |
| belongsTo | epicyclic gear train family ⓘ |
| category |
historical engineering mechanism
ⓘ
power transmission device ⓘ |
| converts | reciprocating motion to rotary motion ⓘ |
| designGoal | circumvent crank patents ⓘ |
| developedFor | steam engine power transmission ⓘ |
| effect | increases rotational speed relative to beam motion ⓘ |
| enables | continuous rotation ⓘ |
| eraOfUse |
early 19th century
ⓘ
late 18th century ⓘ |
| field |
history of technology
ⓘ
mechanical engineering ⓘ |
| gearType | external gear system ⓘ |
| hasComponent |
driven shaft
ⓘ
driving shaft ⓘ gear arm ⓘ planet gear ⓘ sun gear ⓘ |
| hasConfiguration |
planet gear mounted on a rotating arm
ⓘ
sun gear fixed to output shaft ⓘ |
| hasMotionPath | planet gear orbits sun gear ⓘ |
| historicalUse | Boulton and Watt steam engines NERFINISHED ⓘ |
| kinematicRole |
changes direction of motion
ⓘ
converts oscillatory motion to unidirectional rotation ⓘ transmits torque ⓘ |
| mechanicalPrinciple | epicyclic gearing ⓘ |
| motionTypeInput | reciprocating motion ⓘ |
| motionTypeOutput | rotary motion ⓘ |
| operatesBy | planet gear revolving around sun gear ⓘ |
| replacedBy | crankshaft mechanism ⓘ |
| requires | meshing gear teeth ⓘ |
| usedFor | driving machinery from steam engines ⓘ |
| usedIn | early steam engines ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.