| 摘要 |
PURPOSE: A knife coulter device for the screw rod of an excavator is provided to take care of a clod without scattering the clod by easily detaching the clods from a screw blade. CONSTITUTION: A knife coulter device (A) for the screw rod of an excavator comprises a rotation body (2), a support shaft (3), and a supporter (4). The rotation body is installed with a plurality of knife coulter arms (21) to be rotated to correspond to the pitch of the screw blade of a screw rod. Two knife coulter arms are in touch with the screw blade of the screw rod. A knife coulter arm at the top is rotated with the rotation of the screw blade. A knife coulter arm at the bottom is rotated while pushing off a clod from the screw blade. |
