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ENGINEERING

STAIR LIFT

Status:
Produced for:
Team members:
Completed as of 2013
2nd-year project, Introduction to Design (MCG 2101)
Chris Crane
 
The goal of this project was to design an automatic stair lift capable of safely transporting a person between the floors of a house. The final stair lift design is powered by an onboard battery and is driven by a right angle worm drive motor which supplies torque to a pinion gear connected to the rail. The chair travels along a single rail by means of three pairs of rubber wheels which are designed to negotiate vertical and horizontal curves in the rail.
Animation showing the stair lift system negotiating a quarter turn staircase.
BLUE: onboard battery
BLUE: drivetrain, RED: suspension frame
BLUE: load-bearing rubber wheel, RED: stabilising rubber wheels
GREEN: rotating rubber guide wheels
BLUE: servo motor
RED: arm rests, BLUE: seat belt, GREEN+YELLOW: hydraulic emergency brake system
BLUE: folding foot rest
Motion of stair lift along rail
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