Orange conrod, green and upper yellow cranks create a parallelogram mechanism.
There is a 4bar linkage of the pink conrod that connect green and blue panels.
See another solution:
• Vikgrind JetGate Demex AB
STEP files of this video are at:
http://www.mediafire.com/download/b1y...
Inventor files:
http://www.mediafire.com/file/9463dic...