LATTICE BOOM OF CRANE,申请号JP20090104212-传众专利搜索

LATTICE BOOM OF CRANE

申请公布号：JP2010254398(A)

申请号：JP20090104212

申请日期：2009.04.22

申请公布日期：2010.11.11

申请人：

KOBE STEEL LTD;KOBELCO CRANES CO LTD

发明人：YAMAGUCHI HIRONORI;HAMADA TAKESHI;HAMAGUCHI HIROMITSU;KOBAYASHI YUTAKA;MIYA EIJI

分类号：B66C23/64

主分类号：B66C23/64

摘要：PROBLEM TO BE SOLVED: To provide a lattice boom of a crane increasing a bending rigidity without excessively increasing the weight and excessively deteriorating suspending performance. SOLUTION: In the lattice boom including four main pillar materials 5 and a plurality of auxiliary diagonal materials 6 connected between the adjacent main pillar materials 5 of the four main pillar materials 5 in a tilt state, an outer dimension D1 of a cross section of the main pillar material of a lower boom 2 constituting the lattice boom is larger than the outer dimensions D2 and D3 of the cross section of the main pillar material 5 of an intermediate boom 3 and an upper boom 4 constituting the lattice boom. COPYRIGHT: (C)2011,JPO&INPIT