ELEVATION DEVICE FOR WORKING PLATFORM FOR PILE CONSTRUCTING MACHINE

PURPOSE: To allow a working platform to incline easily in compliance with inclination of a leader. CONSTITUTION: The second guide rails 36, 38 are installed on a leader parallel with the first guide rail 10 furnished on the leader which is supported with possibility of inclining round a fulcrum shaft, and wires 48. 50 led from a winch are fastened to a moving table 42 which is supported movably along the second guide rails 36, 38. On the moving table 42 a table 72, which the operator gets on, is supported swingably round a supporting shaft 60 which is parallel with the fulcrum shaft, and the center of gravity G of the table 72 is positioned below the supporting shaft 60. A restricting mechanism 97 is furnished to restrict swings of the table 72, being equipped with a restricting member inserted slidably in a groove formed on the moving table 42 side, a screw shaft 90 penetrating the restricting member and attached to the table 72, and a pair of nuts fitted on the screw shaft 90 while the restricting member is interposed in between.