Hydraulic Tub Lift P 16006 2015 2016 From

Hydraulic Tub Lift P 16006 2015 – 2016 From Left to Right: Alexander Branch, Dominique Hall, Jacob Swearingen, Alexander Krall Team Guide: Arthur North Introduction: The P 16006 team was tasked with creating a bathtub lift system for potential users that experience compromised lower extremities. The project is a second revision that seeks to improve upon the design of the previous P 14006 iteration. A hydraulic system was chosen for the main power source of the lift system since all bathtubs have easy access to a water source. Aluminum was selected as the main building material to reduce weight for the sake of portability. Given then small size and curves of the reference bathtub, the design had to be mindful of both the stability and size of the lift. Space utilization in the final design was efficient and suction cups are incorporated to anchor the lift further. A manual swivel system with an ergonomic chair, both salvaged from the previous iteration, allow for both comfort and easy accessibility to the lift. A rechargeable electric actuator serves as the main component for an optional swivel assist, which can be used if necessary. Main Lift Requirements: Full Setup - Minimal Set-up - Comfortable - Compact Design - Swivels 90° - Hydraulic - Sturdy & Safe - Free of Nickel - Easy to Operate - Reasonable Speed Swivel Assist ANSYS Stroke = 8. 75” Test Max Weight Load Weightless Raise Time Bore = 2. 50” Result Pass/Fail 180 lbs. Pass 9 seconds Pass Weightless Lower Time 18 seconds Pass Raise with Max Load 7 seconds Pass Lower with Max Load 8 seconds Pass Stress Analyses: ANSYS: - Max Stress at Bolts is 71, 428 psi. - Yield of Steel is 84, 000 psi. - Factor of Safety is 1. 2, as a result. Euler’s Buckling: - Max allowable Force is 1922 ft. lbs. - Far exceeds Max Force on Lift. - Buckling is therefore not a concern. Conclusions & Acknowledgements: The final design of the lift is highly compact and lightweight. It operates swiftly and can handle large weights without hiccups in the movement. Not only does the lift operate as expected, it can handle various types of stresses, which is a testament to its durability. Our team would formally like to thank Bimba and R. W. Earl Associates for their generous donation of one hydraulic piston, Monroe County Water for their assistance in determining the pressure ranges for households, and Parker-Hannifin for their donation of raw materials used to construct the lift.