| 摘要 |
PURPOSE:To provide a small-sized elevation driver part, by furnishing the moving frame, to be guided by a column-shaped frame, with two or more receptacles at a certain spacing in the vertical direction and by installing here fittings for receiving the shaft penetrating the cable drum selectively. CONSTITUTION:A column-shaped frame 1 is installed upright on a portable platform body 3, at the bottom of which an elevation driver part 2 of a stamping drive type oil-hydraulic jack is installed, and a moving frame 4 to be guided by this column-shaped frame 1 is installed in coupling with said elevation driver part 2. This moving frame 4 has two or more receptacles 5 installed at a certain spacing in the vertical direction, and at an appropriate position thereof, a fitting 7 for receiving the shaft is mounted to support on end of the shaft 6 penetrating the cable drum. Accordingly if this shaft receiving fitting 7 is mounted at the receptacle 5 located at a level a little lower than the shaft 6, the cable drum 25 can be supported rotatably only by elevating the piston 27 of the elevation driver part 2 to a minor extent. Therefore the elevation driver part can be made in small size and the whole platform made light in weight. |
