| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary cover for more stably performing a tilling work. SOLUTION: This cover 18 covering over a rotary 17 is constituted of a bottom plate 51 of the rotary 17 side which is almost flatly formed and a ceiling plate 52 laminated to the bottom plate 51 on a reverse side of the rotary 17. The reverse side face of the bottom plate 51 is almost flatly formed and a prescribed gap D is formed between longitudinally both end parts of the bottom plate 51 and the ceiling plate 52, then front and rear ends of the bottom plate 51 and the ceiling plate 52 are bent to close the gap D part.
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