Mechanisms Flashcards
What motion does a Crank and Slider convert?
Converts movement from circular motion to reciprocating motion.
Applications of pulleys?
Inside cranes, washing machines.
First class lever?
Load, fulcrum, effort.
What is a bevel gear?
Bevel gears are gears that transmit motion through 90degrees.
Application of bevel gears?
Food mixers, car gear boxes.
What are the 3 functions of mechanisms?
To transmit motion, to convert motion, to control motion.
Example of a first class lever, 2nd class and 3rd class lever?
Sisscors, nut cracker and skip loader.
4 types of movement?
Recipocating, osciliating, linear, circular.
3 types of cams?
Pear cam, snail cam and eccentric cam.
Rack and pinion conversation of motion?
It converts rotary motion to linear motion or the other way round.
Applications of rack n pinion?
Steering wheel, cdrom drive.
Function of ratchet and pawl?
It allows movement in one direction only.
Applications of ratchet and pawl?
Clocks, bicycles.
4 types of springs?
Compression spring, tension spring, torsion spring and flat spring
What force can a compression spring resist and what is its application?
It can resist a squashing force and is used in bicycle’s suspension.
What force is a tension slring used to resist and what is its application?
It is used to resist a streching (tensile) force and is used in trampolines.
What force does a torsion spring resists and what is its application?
It resists a turning force (torque) and is used in a foot pump.
What is a flat spring and what is its application?
A flat spring is a spring that returns to its original shape when bent and are used in staplers.
4 functions of a structure?
Spanning between points, protecting things, containing things, supporting a load.
4 types of bridge?
Cable-stayed bridge, arc bridge, suspension bridge, beam bridge
