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Pawl & Ratchet Mechanism - Extender

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♦ To understand the concept of pawl & ratchet that how it allow the motion in only one direction and oppose to reverse the direction.
♦ It is a model of ratchet mechanism extender which used to extend the shaft you have seen in chair for head support.
♦ For grade 6, 7, 8
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Details

Ratchet and pawl used to allow the motion in only one direction and resist the other side. By using this, we can reduce accidents and load lifting failure. In this model, a shaft used as an extender as you may found in chair mechanism for head support. You can lock or adjust the height to the specific point manually. The assembly is a combination of a cylindrical case and groove cut neck. Two parts are locked with the shaft that fdits the groove of the neck body. Print with PLA and 20% or more infill provides enough strength to the model.

Additional Information

Lesson Plan Available No
Assembly Instructions [Also includes images] No
Grades Nine, Ten
Age Group 12+ Years
Height No
Parts to Print No
Electronic Components N/A
Additional Parts to Purchase No
Customization Available No
Concepts/Topics No
File Formats stl

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