What is beam engine mechanism? - Basic Mechanical Engineering

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• Sravanthi    -Posted on 12 Nov 15
  By fixing different links of chain, different inversions of four bar chain can be obtained.
  
  The different types of four bar inversions are as follows:
  
  1) Double crank mechanism: This is the second inversion of four bar chain. It is used for transmitting rotary motion from one crank to the other crank. Coupled wheels of locomotive is an example of this inversion.
  
  2) Crank and lever mechanism: This is the first inversion of four bar chain. It is used to convert rotary motion of input link into oscillatory motion of output link. Beam engine mechanism is an example of this inversion and it consists of four links. The crank rotates about a fixed centre and the lever oscillates at another fixed centre.
  
  3) Double lever mechanism: This is the third inversion of four bar chain. It is used for transmitting oscillatory motion from one lever to another. Ackermann steering gear mechanism is an example of double lever mechanism.
  

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