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1. WO1999004104 - STRUCTURE FOR WORKING UNIT FOR BUCKET EXCAVATORS AND METHOD FOR MANUFACTURING THE SAME

Publication Number WO/1999/004104
Publication Date 28.01.1999
International Application No. PCT/JP1998/003182
International Filing Date 15.07.1998
Chapter 2 Demand Filed 15.02.1999
IPC
E02F 3/38 2006.1
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
3Dredgers; Soil-shifting machines
04mechanically-driven
28with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets
36Component parts
38Cantilever beams; Dipper-arms; Bucket-arms
E02F 9/14 2006.1
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
9Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
14Booms; Cable suspensions
CPC
E02F 3/38
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
FDREDGING; SOIL-SHIFTING
3Dredgers; Soil-shifting machines
04mechanically-driven
28with digging tools mounted on a dipper- or bucket-arm ; , i.e. there is either one arm or a pair of arms; , e.g. dippers, buckets
36Component parts
38Cantilever beams ; , i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms
Applicants
  • KOMATSU LTD. [JP]/[JP] (DE, GB, JP, KR)
  • SASAKI, Hidetoshi [JP]/[JP] (UsOnly)
  • TANAKA, Toshio [JP]/[JP] (UsOnly)
  • ITOH, Tatsushi [JP]/[JP] (UsOnly)
  • MASUMOTO, Nobuyoshi [JP]/[JP] (UsOnly)
Inventors
  • SASAKI, Hidetoshi
  • TANAKA, Toshio
  • ITOH, Tatsushi
  • MASUMOTO, Nobuyoshi
Agents
  • NISHIMORI, Masahiro
Priority Data
9/18950215.07.1997JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) STRUCTURE FOR WORKING UNIT FOR BUCKET EXCAVATORS AND METHOD FOR MANUFACTURING THE SAME
(FR) STRUCTURE D'UNITE DE TRAVAIL POUR EXCAVATEUR A GODETS ET SON PROCEDE DE FABRICATION
Abstract
(EN) A bucket connecting bracket (23) is connected to one longitudinal end of a hollow arm body (22) having a triangular cross section, and a boom mounting bracket (26) is connected to the longitudinal middle part of the arm body (22), while an arm cylinder bracket (24) is connected to the other longitudinal end of the arm body (22) to constitute an arm. As a result, the arm body (22) is made resistant to deformation in cross section, so that its plate thickness can be reduced and its rigidity is enhanced without resort to a cross section bracing member, thereby manufacturing a light-weight arm free from cross-sectional deformation.
(FR) Une patte de fixation (23) de godet est reliée à une extrémité longitudinale d'un corps de bras creux (22) à section triangulaire, et une patte de fixation (26) de flèche est reliée à la partie médiane longitudinale dudit corps (22), tandis qu'une patte de fixation (24) de cylindre de bras est reliée à l'autre extrémité dudit corps (22), de façon à constituer un bras. Cette structure améliore la résistance du corps du bras (22) aux déformations transversales, ce qui permet de diminuer l'épaisseur de la plaque et d'augmenter la rigidité sans qu'il soit nécessaire d'utiliser un élément de renfort, et donc de fabriquer un bras léger non susceptible de se déformer transversalement.
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