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MECHANISMS (Rotary motion mechanisms (Friction drives (Friction drives are…
MECHANISMS
Rotary motion mechanisms
These mechanisms transmit motion and effort in a circular way, from the input to the output
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Gear train
This is a system of more than two gears, connected together
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Pulley trains with belts
It's a system of pulleys, or wheels, with a belt
formed by more than two wheels.
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Mechanisms
Around us we can see many moving objects and mechanisms that produce movement that we can also call motion.
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The most important element in all of them is the driving force that initiates the movement. The driving force can be a spring, an electric motor or our own muscles
Mechanisms are devices that transmit and convert forces and motion from a driving force or input element to an output element.
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Linear motion mechanisms
Mechanisms that transmit motion and force in a straight line from one point to another. Examples: levers and fixed, mobile and compound pulleys
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Fixed pulley
A fixed pulley is a wheel that has a groove around lt into which a rope, chain or belt fits It rotates around an axle that is fixed to an immobile surface
A fixed pulley is balanced when the effort F is equal to the resistance of the load, R
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Movable pulley
A moveable pulley is a set of two pulleys — one is fixed while the other can move in a linear direction.
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Compound pulley
This Is a system of fixed and moveable pulleys, often called block and tackle.
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