Beam Engine
Beam Engine
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Introduction*Beam Engines and water 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.
What is beam engine?
Itis a type of steamenginewhere a pivoted overhead beamis 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.
SCHEMATIC DIAGRAM
Working PrincipleWhen crank rotates about the fixed centre ,
lever oscillates about a fixed point . The end of the middlelink 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 linearstraight line motion.
MobilityCharacteristicsNumber of links(n): 6Number of
joints(j):7Mobility characteristic (): 3*(n-j-1)+j= 3*(6-7-1)+7=
1Since =1, hence we require only one input to produce the desired
output.
Degree of FreedomIn 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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ANIMATION
THANKS
