| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction machine, improving the outside appearance beauty of a door and reducing the manufacturing cost of the door. SOLUTION: An intermediate plate material 22 having a thickness equal or below that of a door body 19 is provided between the door body 19 and a reinforcement material 24 constituting a right side door 18, the door body 19 and the intermediate plate material 22 are joined to each other by spot welding, and the intermediate plate material 22 and the reinforcement material 24 are joined to each other by fillet welding, thereby joining the reinforcement material 24 to the inside surface 19A of the door body 19 through the intermediate plate material 22. Thus, when the door body 19 and the intermediate plate material 22 are joined to each other by welding, the intermediate plate material 22, which has lower strength than the door body 19, warps with priority to thereby restrain the occurrence of warp in the door body 19 concerned in the quality of outside appearance, so that the outside appearance beauty of the door body 19 can be kept good. COPYRIGHT: (C)2010,JPO&INPIT
|
