Lift of double parallelogram mechanism 2

Input: orange screw crank.
The screw has two threaded portions of the same lead and opposite hands.
It is supported by three cross bars (in blue), two of which are the nuts for the orange screw. While turning the screw also moves up, down, but not in longitudinal direction.
Advantage: no linear slide joint.
A better setup for this mechanism: let the yellow and green bars fold inwards.

STEP files of this video:
https://www.mediafire.com/file/nz97ue0fsrup03h/LiftDoubleParallelogram2STEP.zip/file
Inventor files of this video:
https://www.mediafire.com/file/cyx56tmjqb9ttc9/LiftDoubleParallelogram2Inv.zip/file

Видео Lift of double parallelogram mechanism 2 канала thang010146