View source for Pool Lift F12

[[File:Pool Lift Test.png|290px|thumb|right|Pool Lift]]
== Abstract ==
This project is focused on designing and building a pool lift for a disabled girl who needs an easy way to get into her swimming pool. She is currently getting using a pool ladder to get in and out, but a pool lift will provide a safer and easier means of getting in.

== Team members ==
Tyler Fricks<br />
Ethan Jobe<br />
Kevin Lutz<br />
Kevin Squires<br />

== Introduction ==
The pool lift is for a girl approximately 10 years old with little to no function in her lower body. Up to now she has been getting in and out of her pool via her parents picking her up and walking down a small ladder at the edge of the pool. As she continues to grow, however, this will become increasingly difficult, and so the pool lift provides a much more sensible way to allow her in the pool.<br />

== Design Specifications  ==
The pool lift must do the following:<br />

* Lower the child into the pool and lift her back out.
* Support the child’s upper body while lowering and raising.
* Accommodate the child as she grows.
* Lift the child over the ledge of the pool (10 inches above the decking) then lower her into the water.
* Allow for easy transfer of the child between her wheelchair and the lift.
* Rotate 90 degrees to allow for loading and unloading.
* Resist corrosion from the wet working environment.
* Be convertible from an above-ground pool to an in-ground pool (if possible).
'''It was determined that adapting the lift to an above-ground pool would not be sensible, as the in-ground pool will be ready by summer.'''

== Conceptual Design ==
[[File:Concept 1.jpg|250px|thumb|center|'''Concept 1''']]
[[File:Concept 2.jpg|250px|thumb|center|'''Concept 2''']]
[[File:Concept 3.jpg|250px|thumb|center|'''Concept 3''']]
[[File:POOL LIFT ASSM.png|250px|thumb|center|'''Concept 4''']]

== Detailed Design ==
=== Concept Evaluation ===
To evaluate our concepts, we scored each design in six different categories on a 1-5 scale, with some categories carrying double weight. We ranked the concepts based on manufacturability, safety, cost, transferability, compactness, and ease of use. However, when we decided that transferring from an above-ground to an in-ground pool was no longer feasible, we removed transferability from the evaluation. This resulted in a tie between concepts 2 and 4. To break the tie we first used the safety category, but as that was also a tie we used the ease of use category, and '''CONCEPT 4''' was chosen as the basis of our designs going forward.<br />


[[File:Concept Evaluationnew.png]]<br />

=== Analysis ===
Once we chose our concept, we enhanced the design and performed multiple engineering analyses. Three analyses were performed on our design. Each analysis was worked out both by hand and in Matlab, and the processes and results are shown below.<br />

==== Position Analysis ====
[[File:Position Analysis Part 1.png|250px|thumb|center|'''Position Analysis''']]
[[File:Position Analysis Part 2.png|250px|thumb|center|'''Position Analysis cont.''']]
[[File:Position Analysis Part 3.png|250px|thumb|center|'''Position Analysis cont.''']]
===== Position Diagram =====
[[File:Position.png|250px|thumb|center|'''Position Diagram''']]

==== Velocity Analysis and Force Analysis ====
[[File:Velocity and Force Analysis.png|250px|thumb|center|'''Velocity and Force Analysis''']]
[[File:Velocity and Force Analysis part 2.png|250px|thumb|center|'''Velocity and Force Analysis cont.''']]

===== Velocity vs. Position Diagram =====
''The three different lines represent different actuator speeds.''<br />
[[File:Velocity vs position.png|250px|thumb|center|'''Velocity vs Position''']]<br />

===== Force vs. Position Diagram =====
[[File:Force vs Stroke Length.png|250px|thumb|center|'''Force vs Stroke Length''']]

==== Stress Analysis ====
[[File:Stress Analysis 1.png|250px|thumb|center|'''Stress Analysis''']] 
[[File:Stress Analysis 2.png|250px|thumb|center|'''Stress Analysis cont.]]

=== CAD Drawings ===
Below are the components of the pool lift, as well as the final design.
[[File:Actuator Bracket.png|250px|thumb|center|'''Actuator Bracket''']]
[[File:Actuator Framenew.png|250px|thumb|center|'''Actuator Frame''']]
[[File:Base Plate.png|250px|thumb|center|'''Base Plate''']]
[[File:Lifter Arm.png|250px|thumb|center|'''Lifter Arm''']]
[[File:Lifter Arm Bracket.png|250px|thumb|center|'''Lifter Arm Bracket''']]
[[File:Pool Lift.png|250px|thumb|center|'''Pool Lift''']]

=== Bill of Material ===
[[File:Bill of MaterialNew.png]]

=== Fabrication Process ===
[[File:BasePlateConstruct.jpeg|250px|thumb|center|'''Base Plate''']]
[[File:ChairBackingConstruct.jpeg|250px|thumb|center|'''Chair Backing''']]
[[File:ChairwithBacking.jpeg|250px|thumb|center|'''Chair With Backing''']]
[[File:ActuatorinFrame.jpeg|250px|thumb|center|'''Actuator in Frame''']]
[[File:Pool Lift Test.png|250px|thumb|center|'''Pool Lift at beginning of 60 lb. Test]]
[[File:Pool Lift Test 2.png|250px|thumb|center|'''Pool Lift during 60 lb. Test''']]
[[File:Pool Lift Test 3.png|250px|thumb|center|'''Pool Lift in Fully Extended Position during 60 lb. Test''']]

=== Completed design ===
Insert pictures of the final product

== Summary and Conclusions ==