Title:
作業機械
Document Type and Number:
Japanese Patent JP6816643
Kind Code:
B2
Abstract:
To provide a work machine capable of relaxing a layout constraint of a winch and a sheave, and of increasing a lifting load without significant enlargement.SOLUTION: The work machine comprises a work machine body (10), a telescopic boom (30), a rope (91) for bucket, a winch (61) for bucket, a sheave (41) for bucket, an idler sheave (43) for bucket, a rope (92) for crown, a winch (62) for crown, a sheave for crown, an idler sheave for crown, a rope (93) for hook, a winch (63) for hook, and plural sheaves (45) for hooks. The diameter of each sheave (45) for hook is smaller than each diameter of the sheave for bucket, the idler sheave for bucket, the sheave for crown and the idler sheave for crown, and the diameter of the rope (93) for hook is smaller than each dimeter of the rope for bucket and the rope for crown.SELECTED DRAWING: Figure 1
Inventors:
Isao Fukasawa
Application Number:
JP2017101318A
Publication Date:
January 20, 2021
Filing Date:
May 23, 2017
Export Citation:
Assignee:
Kobelco Construction Machinery Co., Ltd.
International Classes:
B66C23/42; B66C3/02; E21B7/20; E21B11/04
Domestic Patent References:
| JP200499251A | ||||
| JP2016216912A | ||||
| JP2002327588A | ||||
| JP10205261A | ||||
| JP6183692A |
Foreign References:
| KR1020050036084A | ||||
| EP0080002A1 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Hideaki Arata
Masataka Otani
Hideaki Arata