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The mechanism shown in the figure converts reciprocating linear motion of link 1 or link 2 to continuous rotary motion of drum 3 and output shaft 4.
English (United States)
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Linear to Rotary Converter
The mechanism shown in the figure converts reciprocating linear motion of
link 1 or link 2 to continuous rotary motion of drum 3 and output shaft 4.
The links 1 and 2 are pivotally connected to stepped levers 5 and 6,
respectively, the corresponding ends of which are connected together through
tensioned tapes 7 and 8, guided by pulleys 9, and each making one turn around
the drum 3. The levers are themselves pivotally mounted so that they swivel
about their respective axes in response to the reciprocating linear motion of the
associated link 1 or 2.
In operation, a reciprocating drive applied to either link results in alternate
tightening and loosening of the tapes around the surface of the drum through the
swivelling action of the levers. It can be seen that the alternate tightening of the
two tapes on the drum caused by a reciprocating linear drive applied to link 1
results in continuous clockwise rotation of the drum 3 and shaft 4. A
reciprocating drive supplied to link 2, however, results in continuous
anticlockwise rotation of the drum and shaft. Since the tapes take up their own
position on the drum, backlash is eliminated making the mechanism particularly
suitable for converting low amplitude vibrations into rotary motion.
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