Scissor Lift

VEX V5 General Discussion General Forum
#1

I was looking at VEX videos on youtube and I came across this


I replayed the video many times, at a point even going frame by frame through the video, and I can not work out how their scissor lift mechanism worked. Could someone from AURA fill me in?

#2

I’m assuming that you’re talking about the 15" robot.
I’m not from AURA, but I think that I understand it.
It looks like it uses a 1:5 ratio pulley system up and at the back to pull up and down on the first stage of the scissor lift. It has a lot of elastics to balance the weight out.
This is basically the configuration that I see.

#3

@SamuelC (7842D) Thanks!

#4

SamuelC got it pretty much right, but if you want some more information/pictures have a look at page 24/25 of our design notebook from 2015.

http://www.aura.org.nz/wp-content/uploads/2015AuraNotebook.pdf

#5

Actualy that is a double reverse four bar. as you change one angle of the parralelagram all the other angels shift aaccordigly.

#6

@trader.aaron1 I was talking about the 15" bot, not the 24" one

#7