| 摘要 |
PROBLEM TO BE SOLVED: To provide a supporting head for ensuring support of a gradient form. SOLUTION: A supporting head has a head mainbody 4 mounted on a columnar support, an oscillation supporting member 6 mounted on the head mainbody 4 for oscillation around a connecting bolt 44, a supporting plane provided on the oscillation supporting member for supporting rod members and separation preventing protrusions 36, 38 provided at both ends of the supporting plane 16. The oscillation axis of the oscillation supporting member 6 is located substantially parallel to the longitudinal direction of the rod members 40, 42 supported on the supporting plane 16 so that the oscillation supporting member 6 is oscillatable on the head mainbody 4 for oscillation substantially at a right angle to the longitudinal direction of the rod members 40, 42.
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