About this 3D model

The idea behind the box are two gear operated levels that push metal rod up and down when turned.Pushing rod up locks the box and pushing the rod down unlocks but which way do you turn it to lock and unlock? Complete build requires: 2Xcarriers and 1 middle carrier 2 main gears, 2 sun gears and 6 planet gears 1 gear bottom, 1 gear box and 1 gear box top 70mm m8 threaded rod and two nuts