Planar Mechanism with Lower Pairs
Planar Mechanism
Taking a different link as the fixed link, the slider-crank mechanism shown in Fig. (a) can be inverted into the mechanism shown in Fig. (b), (c) and (d).
1. First Inversion Fig. (a)
This inversion is obtained when link 1 (i.e; cylinder) is fixed.
Applications
- Reciprocating engine
- Reciprocating compressor
2. Second Inversion Fig. (b)
Fixing of the link 2 (i.e; crank) of a slider-crank chain results in the second inversion.
Applications
- Whitworth quick return mechanism
- Rotary engine (GNOME engine)
3. Third Inversion Fig. (c)
By fixing the link 3 (i.e; connecting rod) of the slider-crank mechanism, the third inversion is obtained.
Applications
- Oscillating cylinder engine
- Crank and slotted-lever mechanism
4. Fourth Inversion Fig. (d)
If the link 4 (i.e., slider) of the slider-crank mechanism is fixed, the fourth inversion is obtained.
Applications
- Hand pump
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