Title:
Operating machine
Document Type and Number:
Japanese Patent JP6028588
Kind Code:
B2
Abstract:
The invention provides a working machine that exhibits excellent strength and rigidity, by mitigating stress concentration to a welded portion of a front bracket. A front bracket 30 has a fixed part 35 that is fixed to a bottom plate 21 and vertical plates 22, and a pair of protruded parts 40 that are protruded backward from a rear part of the fixed part 35 so as to extend upper parts of sidewall parts 33. The fixed part 35 has an upper wall part 31, a lower wall part 32, a pair of sidewall parts 33 joining the upper wall part 31 and the lower wall part 32, and a rear wall part 34 joining a rear part of the upper wall part 31, a rear part of the lower wall part 32, and rear parts of the pair of sidewall parts 33. The fixed part 35 and the protruded parts 40 are sandwiched between opposite surfaces 22b that are opposite to each other at front parts of the vertical plates 22. The protruded parts 40 are welded to opposite surfaces 22b of the vertical plates 22 that are brought into contact with the protruded parts 40. Each welded portion between the protruded part 40 and the opposite surface 22b of the vertical plate 22 is formed along an edge of the protruded part 40 that is in contact with the opposite surface 22b of the vertical plate 22.
Inventors:
Chung Tamami
Norio Uesugi
Norio Uesugi
Application Number:
JP2013009570A
Publication Date:
November 16, 2016
Filing Date:
January 22, 2013
Export Citation:
Assignee:
Kobelco Construction Machinery Co., Ltd.
International Classes:
E02F3/32; E02F9/08
Domestic Patent References:
| JP2008045303A | ||||
| JP2003328383A | ||||
| JP2010275700A | ||||
| JP2005016019A | ||||
| JP2006266039A | ||||
| JP52056645Y2 |
Attorney, Agent or Firm:
Maeda patent office