Subway (Municipal Railway)
Metro fastener detecting and tightening vehicle
Lithium-battery-powered metro track vehicle that combines visual recognition and 3D point-cloud processing to detect loose fasteners and locate them precisely, then tighten them to a rated torque in the same pass.

Features
Lithium-battery power for emission-free on-line operation
Visual recognition for fastener identification along the track
3D point-cloud processing for accurate fastener positioning
Detects loose fasteners and locates them precisely against mileage
Tightens identified fasteners to a rated torque in the same operating pass
Single-pass detect-and-tighten cycle removes the need for a separate follow-up vehicle
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