Patent ID: 7481289

Claim:
A swiveling work machine comprising: a swivel deck; an engine and an operator's seat which are mounted on the swivel deck; and a protector for the operator's seat mounted erect on the swivel deck; wherein the swivel deck mounts, at a rear portion thereof, a support frame having four post portions disposed around the engine; two rear post portions of the support frame have upper ends thereof connected via a rear beam member; said rear beam member includes an attaching portion for the operator's seat protector to which portion the protector is attached; the support frame includes, at a front upper portion thereof an attaching portion for the operator's seat to which portion the operator's seat is attached; the operator's seat protector is constructed as a four-post type having right and left front post portions and right and left rear post portions, with the right and left rear support post portions being attached to said attaching portion, said right and left front post portions being attached to right and left front portions of the swivel deck, a pair of right and left upper beam portions connect upper ends of said respective front post portions with upper ends of said respective rear post portions and mount a roof member thereon, a front lower connecting portion for connecting lower portions of the right and left front post portions, and a rear lower connecting portion for connecting lower portions of the right and left rear post portions; and at said rear lower connecting portion, there is provided an attaching bracket to be attached to said attaching portion.