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I am trying to create a mechanism that will elevate an object evenly. I have built (this is a real life case) a "cage" which is 2m x 1.5m by 1.5m tall and in the cage there will be placed an object with a geometry similar to the one in the drawing attached.

I have thought of rising the object by placing two ropes under it and bringing the ropes over the side of the cage and pulling from there. However because of the geometry of the object when you pull the same amount from both ropes, the object doesn't rise evenly.

So far I have obtained an equation that relates the relation between what the blue rope rises and what the red rope rises as a funtion of the height the object has risen (this relation changes with the height). I don't know how to obtain it formally, so what I did is draw the object (in Autocad) at 0.25 intervals, then I drew a 0.5m pull from each rope, obtained the relation between what each rope rises at each interval, and then solved a system of equations. My results were:0.589x^3+2.711x^2+4.526x+3.974 with the origin set at the top right end of the cage and "y" positive upwards.

However I have no idea of mechanical engineering nor how to design a mechanism that will elevate the object evenly. I'm thinking that maybe will pulleys, but I really don't know... Please help.

Thanks!

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# How to elevate object evenly

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