Link :
A link or element is that part of a machine which has a relative motion to some other parts. It is a resistance body or assembly of resistant connected in such a way that they form a single part of it having no relative motion.
Types of Link :
1 :- Rigid Link
2 :- Flexible Link
3 :- Fluid link
1 :- Rigid Link
It does not undergo any deformation while transmitting motion .Ex. Crank, Connecting rod, Piston.
2 :- Flexible Link
It is having partly deformation while transmitting motion. Ex. Springs, belts, ropes
3 :- Fluid Link
Motion is transmitted through the link as in case of hydraulic brakes, hydraulic press.
Binary link:
Link which is connected to other links at two points. (Fig.a)
Ternary link:
Link which is connected to other links at three points. (Fig.b)
Quaternary link:
Link which is connected to other links at four points. (Fig. c)
