Support structure for a concave assembly for a rotary combine

A rotary combine comprising:

• a wheel-supported elongate main frame having a forward end facing the primary operational direction of travel of the combine, an opposing rear end, an upper end and an opposing lower end;
• an engine supported by said main frame and adapted to provide motive and operative power to the combine and various function components;
• an operator's plafform supported by said main frame;
• a grain bin for the temporary storage of crop material treated by the combine, said bin having sides and a bottom;
• an elongate generally cylindrically shaped rotor with a longitudinal axis of rotation generally coincident with said longitudinal axis, said rotor supported along said axis for rotation thereabout;
• a support structure supported by said main frame and generally overlying said rotor, said support structure including a lower portion having an elongate semi-circular surface partially surrounding the upper longitudinal half of said rotor;
• said support structure including an upper portion having two inclined elongate surfaces meeting to form a generally inverted-V shaped surface extending, in spaced-apart relationship, along and above said semi-circular surface, said generally inverted-V shaped surface forming at least a portion of the bottom surface of said grain bin;
• said support structure further including a plurality of support members spaced apart longitudinally and extending between and affixed to said upper and lower portions;
• a generally semi-circular concave assembly connected to said support structure below said rotor, opposite said semi-circular surface;
• and,
• a feeder housing supported by said main frame at the forward end thereof and adapted to receive cut crop material and feed it rearwardly to said rotor and concave assembly.