Write complete, valid Three.js code for a complete 3D model ...

Prompt

Write complete, valid Three.js code for a complete 3D model of 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, powered by a single hp motor, which can lift upto 2000 kilograms.