Patent ID: 7144192

Claim:
A self-propelled road milling machine comprising a machine chassis ( 2 ) including spaced drive input side and null side lateral plates ( 12 , 13 , respectively), a milling roll ( 4 ) mounted for rotation between said lateral plates ( 12 , 13 ), said milling roll ( 4 ) including a roll base body ( 14 ) in internal coaxial relationship to a milling tube ( 10 ), drive means ( 6 ) supported upon said drive input side lateral plate ( 12 ) for imparting rotation to said milling roll ( 4 ) through a reduction gear unit ( 8 ), means for easily detaching said null side lateral plate ( 13 ) relative to said chassis ( 2 ) for exchanging milling tubes of different widths, said milling tubes ( 10 ) having means ( 29 , 30 ) for mounting the drive input side of the milling tube ( 10 ) upon said reduction gear unit drive output portion ( 8 b ), said reduction gear unit ( 8 ) being located at a drive input side of said milling roll ( 4 ), said reduction gear unit ( 8 ) including a reduction gear unit drive output portion ( 8 b ) inboard and adjacent said drive input side lateral plate ( 12 ), said reduction gear unit drive output portion ( 8 b ) having an exterior radially supporting shell surface ( 25 ) corresponding substantially in size to an interior radial surface of said means ( 29 , 30 ) for mounting the drive input side of the milling tube ( 10 ) upon said reduction gear unit drive output portion ( 8 b ), said radially supporting shell surface ( 25 ) of said drive output portion ( 8 b ) forming an axially extending seat for said mounting means ( 29 , 30 ), said reduction gear unit drive output portion ( 8 b ) having a terminal end portion ( 23 ), means ( 15 ) for connecting said reduction gear unit drive output portion terminal end portion ( 23 ) to said roll base body ( 14 ), and said roller base body ( 14 ) having a maximum outer diameter that is not greater than the outer diameter of said shell surface ( 25 ) thereby not hindering slidable replacement of milling tubes ( 10 ) from a null side of said milling machine onto said radially supporting shell surface ( 25 ) of said drive output portion ( 8 b ) forming a seat for said mounting means ( 29 , 30 ).