Patent ID: 7422390

Claim:
An automotive milling machine ( 11 ) for machining ground surfaces comprising: an engine frame ( 2 ), a milling drum ( 8 ) supported on the engine frame ( 2 ) and being surrounded by a drum box ( 58 ) having a passage opening ( 56 ) for the milled-off material, a conveying device ( 14 ) which is arranged on the engine frame ( 2 ) and takes over the milled-off material ( 3 ) from the milling drum ( 8 ) at a transfer location ( 5 ) at the passage opening ( 56 ) of the drum box ( 58 ), a suction device ( 20 ) for air that is polluted with dust and fumes, the conveying device ( 14 ) with an entrance end and a discharge end for the milled-off material ( 3 ) being enclosed by a duct ( 22 a , 22 b ), the duct ( 22 a , 22 b ) enclosing the conveying device ( 14 ) being divided into first and second duct sections ( 16 a , 16 b ) with the transfer location ( 5 ) being located at the entrance end of the conveying device ( 14 ) at the passage opening ( 56 ) of the drum box ( 58 ), the suction device ( 20 ) being connected to the first duct section ( 16 a ) of the duct ( 22 a , 22 b ) downstream from the first transfer location ( 5 ) for the milled-off material ( 3 ), the suction device ( 20 ) providing a strong suction airflow substantially in the direction in which the milled-off material ( 3 ) is conveyed inside the first duct section ( 16 a ) and inside the milling drum box ( 58 ) thereby preventing escape of air polluted at the working area of the milling drum ( 8 ) and at the transfer location ( 5 ), and the second duct section ( 16 b ) being separated from the first duct section ( 16 a ) by means ( 36 ) therebetween for preventing an airflow opposite to the transport direction on the conveying device ( 14 ) without hindering the transport of the milled-off material ( 3 ).