Additional strengthening of the pipe and cab structure of the construction equipment which has this

摘要

Without causing the increase of cost reinforcing the pipe with simple constitution, in order to offer the additional strengthening of the pipe whose it is possible to assure high strengthening and thinning of the pipe, and the cab structure of the construction equipment which has this, the left and right back-column component (33) and (34) additional strengthening (20) with, the left and right back-column component (33) and (34) in specified position of the peripheral aspect in, the hole (33a) and (34a) is formed, the plate (21) is inserted there and is locked.