| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of bearing frame capable of improving the deformability (tenacity) of the whole bearing frame with a simple structure. SOLUTION: In the part where the lower end part of an upper diagonal 2a is connected to the upper end of a lower diagonal 2b among the connection parts of both the upper and lower diagonals arranged in a horizontal V-shape to vertical frame members 1, a clearance L is provided between the lower end of the upper diagonal 2a and the upper end of the lower diagonal 2b so that the intersection X of the neutral axis a of the vertical frame member 1a with the neutral axis b of the upper diagonal 2a is vertically separated from the intersection Y of the neutral axis a of the vertical frame member 1a with the neutral axis c of the lower diagonal 2b. The vertical frame member 1a with the lower end part of the upper diagonal 2a and the upper end part of the lower diagonal 2b connected thereto is formed of a square steel pipe, and in the vertical frame member 1 formed of the square steel pipe, at least the part between the intersection X of the neutral axis a of the vertical frame member 1a with the neutral axis b of the upper diagonal 2a and the intersection Y of the neutral axis a of the vertical frame member 1 with the neutral axis c of the lower diagonal is set thinner than the other part of the vertical frame member 1.
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