PWrite complete, valid OpenSCAD code for an 8ft x 7ft indust...

Prompt

PWrite complete, valid OpenSCAD code for an 8ft x 7ft industrial 4-post lift with a 3ft vertical stroke, featuring an empty center, 4 corner rack-and-pinion pillars, and a single motor linked to 4 corner bevel gearboxes via an H-layout line-shaft system, which can lift upto 2000 kilograms.