Frame for agricultural harvester cleaner
An agricultural harvester includes a grain processing section having a sieve assembly. The sieve assembly includes right and left frames interconnected by a cross member. The cross member has end castings securable to the right and left frame members. An elongated U-shaped sheet metal member extends between the castings. An elongated slot at each of the U-shaped sheet metal member terminates in a circular hole. The slot and circular hole accommodate variations in forming tolerances for the U-shaped sheet member and dissipate stresses.
1. A sieve assembly for an agricultural harvester, said sieve assembly comprising:
a right frame and a left frame interconnected by a cross frame;
said cross frame comprising a casting on either end for connection to said right and left frames;
an elongated bent edge sheet metal member affixed to said castings, said sheet metal member having a longitudinal slot in the end for accommodating variations in geometry; and,
fasteners for connecting said sheet metal member to said end castings on opposite sides of said slot; and,
wherein said elongated slot terminates in a rounded hole.
2. The sieve assembly as claimed in claim 1 , wherein said casting comprises threaded holes and said fasteners are screws threaded into said threaded holes.
3. The sieve assembly as claimed in claim 2 , wherein said casting has an upper surface and side surface, each with threaded holes therein and said sheet metal member has holes corresponding to said threaded holes in said casting.
4. The sieve assembly as claimed in claim 3 , wherein said casting has formed therein a longitudinally extending hole forming a pivotal mounting for said sieve assembly.
5. The sieve assembly as claimed in claim 4 , wherein said castings have mounting bosses adjacent the longitudinal hole for mounting to said right and left frames.
6. The sieve assembly as claimed in claim 1 , wherein said sheet metal member has a U-shaped cross section.
7. A harvester comprising:
a chassis;
a plurality of wheels for ground movement;
grain processing equipment mounted in said chassis;
a sieve assembly comprising a right frame and a left frame interconnected by a cross frame;
said cross frame comprising:
a casting on either end for connection to said right and left frames;
an elongated bent edge sheet metal member affixed to said castings, said sheet metal member having a longitudinal slot in the ends thereof for accommodating variations and geometry; and,
fasteners for connecting said sheet metal member to said end castings on opposite sides of said slot; and
wherein said elongated slot terminates in a round hole.
8. The agricultural harvester as claimed in claim 7 , wherein said castings have threaded holes and said fasteners are threaded into said holes for securing said sheet metal member to said castings.
9. The agricultural harvester as claimed in claim 8 , wherein said casting has an upper surface and side surfaces with threaded holes in each and said sheet metal member has holes corresponding to said threaded holes.
10. The agricultural harvester as claimed in claim 9 , wherein said casting further comprises a longitudinally directed hole forming a pivotal mounting for said sieve assembly.
11. The agricultural harvester as claimed in claim 10 , further comprising mounting bosses on said casting adjacent said longitudinal hull for securing to said right and left frames.
12. The agricultural harvester as claimed in claim 7 , wherein said sheet metal member has a U-shaped cross section.
13. A harvester comprising:
a chassis;
a plurality of wheels for ground movement;
grain processing equipment mounted in said chassis;
a sieve assembly comprising a right frame and a left frame interconnected by a cross frame;
said cross frame comprising:
a casting on either end for connection to said right and left frames;
an elongated bent edge sheet metal member affixed to said castings, said sheet metal member having a longitudinal slot in the ends thereof for accommodating variations and geometry; and,
fasteners for connecting said sheet metal member to said end castings on opposite sides of said slot;
wherein said elongated sheet metal member has a side section with a plurality of closed slots for releasably retaining wire fingers.
14. The agricultural harvester as claimed in claim 13 , wherein said closed slots comprise holding notches interconnected by a V shape for permitting installation of said wire fingers.