| 摘要 |
A generally conventional seeder is provided including a main frame supporting a plurality of laterally spaced rear seeder units and equipped with a forwardly projecting tractor attachable hitch assembly including dependingly supported ground wheel structure. The hitch assembly includes mounting frame structure intermediate the main frame and the forward extremity of the hitch assembly and a pair of elongated, generally aligned and axially spaced transversely extending opposite side tool bars are disposed on opposite sides of the ground wheel structure. A pair of laterally spaced upstanding guide and support members project upwardly from adjacent ends of the tool bars and the mounting frame structure includes guide structure from which the guide and support members are guidingly supported for vertical shifting. A cross-head assembly extends between and connects the upper ends of the guide and support members and lift structure is operatively connected between the cross-head assembly and the hitch assembly for adjustably raising and lowering the cross-head assembly relative to the hitch assembly. The mounting frame structure and the remote ends of the tool bars include coacting guide structure guiding the remote ends of the tool bars against rearward displacement relative to the main frame and a plurality of tool shanks are dependingly supported from each of the tool bars. A sweep is mounted from the lower end of each tool shank and shaft journal structure may be supported from each sweep. Driven rod weeder shaft structure may be journaled from and extend between the journal structure rearward of the ground wheel structure.
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