REACTION SUPPORT STRUCTURE OF TELESCOPIC BOOM

摘要

PROBLEM TO BE SOLVED: To provide a reaction support structure of a telescopic boom capable of reducing the interior stress by a simple structure.

SOLUTION: The reaction support structure C of the telescopic boom includes: an exterior box slant plate part 4 formed on both ends of the top plate part of an exterior box member 141; an interior box slant plate part 5 formed on both ends of the top plate part of an interior box member 142; and a slide member 2 inserted between the exterior box slant plate part 4 and the interior box slant plate part 5. In addition, the slide member 2 has a project part 2a where the neighborhood of the center in the slant direction of the inward face facing to the interior box slant plate part 5 is projecting from the peripheral face in the slant direction.

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