Patent ID: 7131686

Claim:
An operator protective structure installed on a cabin of construction machine, wherein the cabin provided with a bottom plate on a bottom thereof, mounted on an upper frame installed on a lower driving body and independently vibrated relative to the upper frame by connecting the bottom plate to the upper frame through vibration absorbing devices, the structure comprising: a front guide provided with a top bar and a bottom bar and installed up and down in front of the cabin to protect the cabin from objects penetrating into a front of the cabin, wherein the top bar corresponding to a top side of the cabin is connected to a front top portion of the cabin and the bottom bar corresponding to a bottom side of the cabin is connected to a front bottom portion of the cabin, whereby the front guide and the cabin are vibrated relative to the upper frame in a single body; and a top guide formed long on a ceiling of the cabin in a front and rear direction to protect the cabin from falling objects, wherein a pair of front brackets is forwardly protruded at both front top sides of the cabin, the top bar is fixed by a bolt inserted into the front brackets, and the bottom bar is directly fixed to a front surface of the cabin through a bolt tightening process.