| 摘要 |
PROBLEM TO BE SOLVED: To integrally form a transfer section from a pillar section to a beam section, to ensure the facility of working and to remove a joining section in the transfer section as the structure of a cabin. SOLUTION: A pillar-beam structure 30 is composed of a front pillar section 31 disposed in upright from a base frame, a roof beam section 32 extended in the horizontal direction at the upper end section of the front pillar section 31 and the transfer section 33 from the front pillar section 31 to the roof beam section 32. The transfer section 33 is bent at an angle close to 90 deg., a notched section 30a is formed to a section in which a guide groove 34 is formed in the pillar-beam structure 30, and a cover section piece 43 is joined with the notched section 30a and fixed by a welding means. The guide groove 44 is also formed to the cover section piece 43 in the same shape as the other sections of the structure 30 under the state in which the cover section piece 43 is mounted to the notched section 30a. |
