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RACK AND PINION EXAMINATION QUESTION |
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V. Ryan © 2004 | |
1.
The diagram below shows a fork lift truck. It is used to lift pallets,
complete with their heavy loads. The forks on the front of the truck
move up and down the vertical track. In the magnified area, draw the
missing mechanism that allows movement of the forks. |
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EXPLANATION: |
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The driver controls the clockwise or anticlockwise motion of the pinion wheel. The pinion drives the rack either up or down. The rack is fixed to the forks and consequently they move in the same direction of the rack. |
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