Export tracks and conveyors as .stl files, a universal format. You can read these files in SketchUp Make 2017 and Blender, which are free.
To export, select the tracks and conveyors you want to export, then press OTL
. You can also click the corresponding buttons: options
, track options
, selected as STL to clipboard
. The STL data goes to your clipboard. Depending on your 3D software, you can paste it into the software, or save the clipboard to a .txt or .stl file for manual import.