Patent ID: 7364223

Claim:
A cab supporting structure comprising: an attenuation mechanism disposed between a frame and a cab for elastically supporting the cab against the frame in a direction in which the cab is approaching the frame and in a direction in which the cab is separating from the frame; and a regulation member for regulating the cab's displacement when the cab is displaced in a direction separating from the frame so that the displacement does not exceed a predetermined amount, wherein said regulation member regulates the displacement of the cab so that the displacement is limited to a stroke end of the attenuation mechanism in the direction in which the cab is separating from the frame, wherein said regulation member includes first and a second regulation members each provided on a rear end of the cab, the first regulation member being on a side away from a work equipment which is mounted on the frame, and the second regulation member being on a side close to the work equipment, and wherein the first and the second regulation members have different structures.