Patented system for locking the tie rods and quick closing (by turning the hook clockwise), locking and unlocking connections in the middle of the uprights to change the working configurations, 4 positions of use: scaffolding, double ladder, support or work platform, non-slip floor Eurodeck wood supported by a shaped tubular aluminum structure for a perfect connection to the post, with 61x46 cm access hatch, wheel mounting kit 2mm off the ground to easily move the scaffolding