A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FIRE ENGINE LADDER AND HOOK-AND-LADDER TRUCK
PROBLEM TO BE SOLVED: To provide a fire engine ladder and a hook-and-ladder truck, which can avoid cracking due to stress concentration and reduce weight.SOLUTION: A fire engine ladder according to this invention comprises: a pair of upper ribs 31, which are disposed in longer direction; a pair of lower ribs 32, which are disposed in longer direction; a lateral face member 33, which is disposed between the upper rib 31 and the lower rib 32; and a bottom member 34, which is disposed between the pair of lower ribs 32. The lower rib 32 is formed of a square pipe. A thick part that is thicker than other parts is formed on a specific section of the square pipe.SELECTED DRAWING: Figure 1
【課題】 応力集中による割れを回避できるとともに、重量低減を図ることができる消防車用梯子及び梯子車を提供すること。【解決手段】 本発明の消防用梯子は、長手方向に配置される一対の上親骨３１と、長手方向に配置される一対の下親骨３２と、上親骨３１と下親骨３２との間に配置される側面部材３３と、一対の下親骨３２の間に配置される底面部材３４とからなり、下親骨３２を、型成形による角形管で構成し、角形管の特定部分に、他の部分よりも肉厚が厚い厚肉部を設けたことを特徴とする。【選択図】 図１
FIRE ENGINE LADDER AND HOOK-AND-LADDER TRUCK
PROBLEM TO BE SOLVED: To provide a fire engine ladder and a hook-and-ladder truck, which can avoid cracking due to stress concentration and reduce weight.SOLUTION: A fire engine ladder according to this invention comprises: a pair of upper ribs 31, which are disposed in longer direction; a pair of lower ribs 32, which are disposed in longer direction; a lateral face member 33, which is disposed between the upper rib 31 and the lower rib 32; and a bottom member 34, which is disposed between the pair of lower ribs 32. The lower rib 32 is formed of a square pipe. A thick part that is thicker than other parts is formed on a specific section of the square pipe.SELECTED DRAWING: Figure 1
【課題】 応力集中による割れを回避できるとともに、重量低減を図ることができる消防車用梯子及び梯子車を提供すること。【解決手段】 本発明の消防用梯子は、長手方向に配置される一対の上親骨３１と、長手方向に配置される一対の下親骨３２と、上親骨３１と下親骨３２との間に配置される側面部材３３と、一対の下親骨３２の間に配置される底面部材３４とからなり、下親骨３２を、型成形による角形管で構成し、角形管の特定部分に、他の部分よりも肉厚が厚い厚肉部を設けたことを特徴とする。【選択図】 図１
FIRE ENGINE LADDER AND HOOK-AND-LADDER TRUCK
消防車用梯子及び梯子車
YAMAGUCHI KENICHI (author)
2017-10-05
Patent
Electronic Resource
Japanese