Title:
【発明の名称】油圧ショベル用リンク装置
Document Type and Number:
Japanese Patent JP3369025
Kind Code:
B2
Abstract:
The present invention relates to a link device for a hydraulic excavator which facilitates horizontal digging by the hydraulic excavator. To this end, the device comprises a power lever (19) having a first fulcrum rockably connected to a boom (2) by means of a boom pin (4), a second fulcrum rockably connected to a boom cylinder (5) by means of a boom head pin (18), and a third fulcrum to which an arm pin (20) is mounted; and a power rod (22) one end of which is connected to an arm power pin (21) attached to an arm (7), and the other end of which is connected to an arm pin (20). When the arm (7) is rocked by extending and contracting an arm cylinder (10), the boom (2) is swung vertically in operatively associated therewith, and the tip of a bucket (12) moves on a straight line.
Inventors:
Kazuo Uehara
Hiromasa Yamaguchi
Naoki Ishizaki
Hiromasa Yamaguchi
Naoki Ishizaki
Application Number:
JP10074895A
Publication Date:
January 20, 2003
Filing Date:
March 30, 1995
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
E02F3/30; E02F3/32; (IPC1-7): E02F3/32
Domestic Patent References:
| JP6158263U |