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Beam engine Mechanism
The document explains the introduction and function of beam engines, first used in Wanlockhead in 1745 for pumping water in mining and canals. It describes the mechanics of the beam engine as a system that converts rotary motion into linear motion, consisting of a six-link mechanism with specific mobility characteristics and degrees of freedom. Applications of beam engines include water pumps, oil rigs, and specialized sawing machines.
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Beam engine Mechanism
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- 2. Introduction *Beam Engines andwater bucket pumps were introduced in Wanlockhead in 1745. *It was used to draw out water from mines, as well as to pump water into canals.The engine consisted of a large wooden frame into which a pivoted overhead beam was used to apply force generated by a pump rod and transfer that movement to a vertical piston. *This mechanism was mostly used in steam engines but nowadays it is used in water pumps, oil rigs , specifically designed sawing machine etc.
- 3. What is beamengine? • It is a type of steam engine where a pivoted overhead beam is used to apply the force from a vertical piston to a vertical connecting rod. • It is basically a 6 link mechanism that converts rotary motion of crank into linear straight line motion of vertical sliding link that in practice is used in pumps and other purposes.
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- 5. Working Principle When crankrotates about the fixed centre , lever oscillates about a fixed point .The end of the middle link is connected to the piston rod which reciprocates due to the rotation of the crank.The purpose of this mechanism is to convert rotary motion into the linear straight line motion.
- 6. Mobility Characteristics • Number oflinks(n): 6 • Number of joints(j):7 • Mobility characteristic (µ): 3*(n-j-1)+j • µ= 3*(6-7-1)+7= 1 Since µ=1, hence we require only one input to produce the desired output.
- 7. Degree of Freedom •In mechanics, the degree of freedom (DOF) of a mechanical system is the number of independent parameters that define its configuration. • Our project has 2 degrees of freedom i.e. rotation of link about axis perpendicular to the plane and vertical motion.
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