PROBLEM TO BE SOLVED: To provide a boom extension device that can reduce time during which an extension boom is extended.SOLUTION: The boom extension device comprises: an extension boom 1 that has a plurality of boom members 8a, 8b and 8c sequentially arranged therein and is extended by mutually sliding of the plurality of boom members 8a, 8b and 8c; inter-boom fixing parts 14 and 15, mounted on the extension boom 1, by which adjacent boom members 8a, 8b and 8c are fixed to each other; and a plurality of extending/moving parts 6a and 6b, provided in the extension boom 1 to circle respectively in an extension direction of the extending boom 1, which are connected to the plurality of boom members 8a, 8b and 8c and detach the inter-boom fixing parts 14 and 15 from the plurality of boom members 8a, 8b and 8c, and thereby sequentially slide the plurality of boom members 8a, 8b and 8c.SELECTED DRAWING: Figure 1
【課題】伸縮ブームの伸縮時間を簡単に短縮するブーム伸縮装置を提供する。【解決手段】順次内側に配置された複数のブーム部材8a,8bおよび8cを有し、複数のブーム部材8a,8bおよび8cが互いにスライドすることで伸縮される伸縮ブーム1と、伸縮ブーム1に取り付けられ、隣り合うブーム部材8a,8bおよび8cを互いに固定するブーム間固定部14および15と、伸縮ブーム1内において伸縮ブーム1の伸縮方向にそれぞれ連続的に周回するように設けられ、複数のブーム部材8a,8bおよび8cに連結すると共に複数のブーム部材8a,8bおよび8cからブーム間固定部14および15を取り外して複数のブーム部材8a,8bおよび8cを順次スライドさせる複数の伸縮移動部6aおよび6bとを備える。【選択図】図1
BOOM EXTENSION DEVICE
ブーム伸縮装置
2017-09-14
Patent
Electronic Resource
Japanese
IPC: | B66C Krane , CRANES |
European Patent Office | 2022
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