MULTIPLE-PURPOSE AUTOMATIC LIFTING STEP SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an automatic lifting step system which actualizes silent and safe lifting operation of a self-supported riding lifting device mounted on a wall side in parallel to an inclined stairway, while avoiding various problems in hold-in between rollers on rails.;SOLUTION: In the automatic lifting step system, the groove-shaped laid double-row rails are constructed to shield the outside faces of the rails, detect the cut of a traction chain, and properly function synchronous and safe resting cam brakes. To avoid the one-sided effect of the right and left brakes in a blank on the rail surfaces of the double-row rails for the right and left rollers, the shaft center swing form of a roller shaft center concentrically mounted in the hollow shaft of a mounted brake cam is served for preventing the blank on the rails, as a function managing element important for safe lifting operation together with a self-supported riding hand supporter. To rationalize the consistent removal of spaces between the rails and the right and left rollers, the shaft center swing form of the roller shaft center constructed concentrically with the cam shaft is provided for consistently supporting the roller surfaces on the double-row rails, as a functional structure important for safe and silent lifting operation together with the hand supporter on a self-supported riding plane.;COPYRIGHT: (C)2011,JPO&INPIT