Working machine with structure for assembling boom thereof

Details Working machine with structure for assembling boom thereof Working machine with structure for assembling boom thereof

2011-08-09

2011-08-09

Underwood, Donald (Department: 3652)

Material or article handling

Vertically swinging load support

Shovel or fork type

C029S03300H, C029S891000, C029S897200, C414S680000

Reexamination Certificate

active

07993090

ABSTRACT:
Bosses extending in the boom width direction are provided in a front end part of a main boom body rotated upward, and hooks opening downward are provided in a base end part of a front boom body rotated downward. In a state that the bosses and the hooks are engaged with each other, a scooping action is performed so as to match pin holes thereof. The above hooks and the bosses are arranged so as to satisfy a condition that in a state that an angle between both boom bodies is a maximum angle at the time of work, the hooks and the bosses are moved away from each other and a distance between the hooks and the bosses is increased as the angle is reduced from the maximum angle.

REFERENCES:
patent: 4393607 (1983-07-01), Hirosawa
patent: 64-28452 (1989-02-01), None
patent: 2535667 (1997-02-01), None

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