Question
Download Solution PDFWhich of the following is an inversion of a single slider-crank chain?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- Rotary engine – I inversion of slider-crank mechanism (crank fixed)
- Whitworth quick return motion mechanism – I inversion of slider-crank mechanism so option 3 is correct.
- Crank and slotted lever quick return motion mechanism – II inversion of slider-crank mechanism (connecting rod fixed).
- Oscillating cylinder engine – II inversion of slider-crank mechanism (connecting rod fixed).
- Pendulum pump or bull engine – III inversion of slider-crank mechanism (slider fixed).
- Inversions of double slider crank mechanism: Elliptical trammel, Oldham coupling
- Inversions of four-bar chain: Crank-rocker mechanism, Drag link mechanism, Double crank mechanism, Double rocker mechanism
Inversions of single slider crank mechanism:
- A slider-crank is a kinematic chain having four links. It has one sliding pair and three turning pairs.
- Link 2 has rotary motion and is called a crank. Link 3 has got combined rotary and reciprocating motion and is called connecting rod. Link 4 has reciprocating motion and is called a slider. Link 1 is a frame (fixed). This mechanism is used to convert rotary motion to reciprocating and vice versa.
- Inversions of the slider-crank mechanisms are obtained by fixing links 1, 2, 3 and 4.
- First inversion: This inversion is obtained when link 1 (ground body) is fixed.
- Application- Reciprocating engine, reciprocating compressor, etc.
- Second inversion: This inversion is obtained when link 2 (crank) is fixed.
- Application- Whitworth quick returns mechanism, Rotary engine, etc.
Whitworth quick returns mechanism
- Third inversion: This inversion is obtained when link 3 (connecting rod) is fixed.
- Application - Slotted crank mechanism, Oscillatory engine, etc.
- Fourth inversion: This inversion is obtained when link 4 (slider) is fixed.
- Application- A hand pump, pendulum pump or Bull engine, etc.
Last updated on Jul 15, 2025
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