Robinson EDL-1 Digital Portfolio

Processes

Generating ideas

The initial sketches of climber prototypes involved concepts from already existing concepts as well as new ideas to attempt
This included concepts such as cut outs in the drive train, extending arms, and spinning to choke up on the chain holding the cage

2. Analyzing the problem and logging designs

Before deciding on a design, I analyzed the structure of the deep cage that was going to be climbed.
During the process of designing this project different climbers each was logged in a google slide before testing

CAGE Design/Prototype Log

3. Geometry and Physics analysis of cage

I analyzed different design concepts and a majority of them required the cage to be pulled in at an angle. This angle changes depending on the placement of the cage in the robot. In order to maximize our height off the ground
I created a desmos sheet to calculate the distance the bumpers of the robot would be from the ground to ensure we would be off the ground. https://www.desmos.com/calculator/kdwxjkgara
The second method of climb we tested was named "spinbot" as it would spin in a circle to pull the chain up and give us more height off the ground
- The spinbot was tested and I calculated the angular acceleration based on a video from the first prototype

4. Beginning the prototype process

We started by using an old drivetrain directly attached to a chain and choking the chain by twisting it before standing back and letting go.
This was a very impromptu prototype design, as others that followed were first created in KrayolaCAD, a simplistic 3D model, before being designed with defined geometry
We had a page for what will be tested with a description and a page for the Learnings. After, there is a requirement reevaluation for what is necessary of the design.

4. Creating the geometry and visualizing it with CAD

The design we decided to go with took inspiration from team 3847's climber design with a bar to pull in a cage -> https://www.chiefdelphi.com/t/spectrum-3847-build-blog-2025/478254/184
I began by creating a geometry sketch based on pivot points and general geometry before creating it in 3D

5. Prototype Testing

Videos of varius stages of prototype

IMG_8739.mov

IMG_8831.mov

IMG_8830.mov

IMG_8889.mov

6. Finalizing Design

The design went through a few iterations, but we settled on a a rope and pulley mechanism with friction material and a bar to hold up the cage.
This is the final design on the robot.

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