Standards null for run crane

摘要

PURPOSE: To attain weight reduction and cost reduction of a traveling crane use column to guide a raising-lowering carriage as well as to make the column usable in both of a single post type crane and a double post type crane. ;CONSTITUTION: In a traveling crane use column of a hollow square column shape being integral moldings of aluminium, the recessed parts 16 and 17 which are formed by recessing side walls inside and continue in the column lengthwise direction, are formed on at least one both side wall 12 and 13 among both front and rear side walls 12 and 13 and both left and right side walls 14 and 15, and part installing rail grooves 25a to 28b continuing in the column lengthwise direction are respectively formed in respective four corner parts 21 to 24, and a cross-sectional shape is formed in longitudinal symmetry and bilateral symmetry.;COPYRIGHT: (C)1995,JPO