Determining the size of a mobile scissor lift's platform extension (also called platform extension deck or slide-out deck) involves balancing functional needs, structural limits, and safety regulations. Here's a structured approach to define its size:
1.Base Platform Size
Start by confirming the main platform dimensions, since the extension must integrate smoothly with it.
Common base platform sizes:
1.8m × 0.8m,
The extension should be along the longer side for best usability.
2.Extension Length Range
Typical extension lengths range between 0.8m to 1.5m, depending on model and application.
Indoor/light-duty units: 0.8m–1.0m extension
Rough terrain/heavy-duty lifts: 1.2m–1.5m extension
Longer extensions offer more reach but increase load on the scissor mechanism and affect center of gravity.
3.Load Capacity & Structural Limit
Check how much load the extension deck is designed to handle. Typically:
Extension deck rated at 113–136 kg (250–300 lbs)
Should support one worker with tools
The structural design (frame strength, rollers, and locking system) must accommodate this safely.
4.Center of Gravity and Stability
Larger extensions increase tilt risk. You may need to:
Adjust platform load distribution
Limit travel when fully extended
Add counterbalance or use outriggers in some designs
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