| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupler for wing hiller, capable of solving such problems caused by conventional wing hiller having only one positioner on the coupler that the conventional wing hiller can not keep its attitude straightly in a traveling direction when operated and therefore not only steering of a tractor pulling the wing hiller is unstable but also an accuracy of the ridging operation is deteriorated. SOLUTION: This coupler 3 used for attaching the wing hiller 2 to the rear of the tractor 1 to be freely attachable and detachable is composed of a bracket 5 located on the machine body 4 and a mounting support 6 located on the wing hiller 2 to be used for coupling with the bracket 5. The mounting support 6 is constituted so as to make it possible to freely change and control a setting angle of the wing hiller 2 to the traveling direction A of the tractor, so that the mounting position of the wing hiller 2 can be chosen and determined.
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