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Linkages are used in mechanisms to transfer force and can change the direction of movement. They are simply an assembly of levers.
Linkages are used in mechanisms to transfer force and can change the direction of movement. They are simply an assembly of levers.
The number and shapes of the linkages can change the direction of the force. The position of the pivots can change the size or magnitude of the force. The closer the pivot is to the output end of the lever, the larger the force is at the output.
The number and shapes of the linkages can change the direction of the force, and the position of the pivots can change the size or magnitude of the force.
Push/Pull
Push/Pull
As the large rod at the top of the diagram moves to the left the two small rods at the bottom move to the right. All the rods are parallel to each other.
Bell Crank
Bell Crank
This linkage allows horizontal movement to be converted to vertical movement. It also works the opposite way round. A practical example of this is the brake mechanism on a bicycle.
Crank & Slider
Crank & Slider
The rods move forwards and backwards in slider. The fixed pivot anchor the linkages to one place.
REVERSE MOTION
REVERSE MOTION
As the top rod moves to the left the bottom rod moves to the right. The bars move in opposite directions. Another way of describing this linkage is the direction of movement in one rod is reversed in the other rod. The fixed pivot is the centre of rotation.
something extra
something extra
Here is some more information on linkages and their uses. This may help you with your design project ideas.
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