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MECHANISMS, PULLEYS, GEAR MECHANISMS WITH A CHAIN, GEAR TRAIN - Coggle…
MECHANISMS
MECHANISMS
Mechanisms are devices that transmit and convert forces and motions from a driving force to an output element. They enable us to carry out tasks with greater comfort and less effort.
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We're surrounded by objects that move or have the capacity to move. What is it that makes it possible for these objects to move? Look at these photos:
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LINEAR MOTION MECHANISMS
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A lever is a rigid bar that pivots on a fulcrum to move a load using effort. It follows the law: effort × distance = load × distance.
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ROTARY MOTION HECHANISMS
Rotary motion mechanisms transmit movement and force in a circular motion from an input to an output. Examples include friction drives, pulley systems with belts, gears, and worm gears.
1. Friction Drive
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When it rotates, it drives the output wheel (wheel 2).
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Uses: industrial machines, making sheets or moving materials.
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-moving people from one place to anoter.
-telling the time.
-entretaining children in a park.
-raising or lowering objects.
The most important element in all of them is the motor that starts the movement. This motor can be a spring, an electric motor or our own muscles.
PULLEYS
PULLY TRAIN WITH BELTS
A pulley train with belts uses several pulleys connected by belts to transfer rotary motion from a drive pulley to driven pulleys. The speed ratio depends on the diameters of the pulleys. These systems are used in machines like drills and tools.
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GEAR TRAIN
A Gear train is a system of three or more gears connected together to transmit motion.
Connected gears rotate in opposite directions, and the speed depends on the number of teeth on each gear.
It is used to increase or decrease speed in machines and in Robotics.
