| 摘要 |
A cab 10 is provided on an upper rotary body 2 of a construction machine along with a front working mechanism 7. The cab 10 provides an operating room within an enclosure which mainly consists a first side frame structure 11 containing a door to be opened and closed by an operator, a second side frame structure 12 located on the side of the front working mechanism 7, a front section 13 provided between front ends of the first and second side frame structures 11 and 12 and substantially entirely occupied by a front window 23, a roof section 15 and a rear section 14. In addition to a cross beam member 26 which is bridged between upper front corner portions of the first and second side frame structures 11 and 12, a reinforcing the cross beam member 26 is bridged alongside the cross beam member 26 for reinforcing same. <IMAGE>
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