EP 0130236 B1 19861015 - ATTACHMENT FOR HYDRAULIC EXCAVATORS AND CRANES
Title (en)
ATTACHMENT FOR HYDRAULIC EXCAVATORS AND CRANES
Publication
Application
Priority
EP 83110255 A 19831014
Abstract (en)
[origin: EP0130236A1] 1. An equipment attached to a fluid actuated crawler or wheel type excavator with an undercarriage and a rotatable platform comprising a) a boom base linked to the rotatable platform and rotatable by power in a vertical plane b) a boom head, rotatably connected to the boom base by a swing axis extending in the moving plane of the boom base, incorporating a directive pivot extending crosswise to the swing axis. c) a directive guide hinged to the boom head by the directive pivot. d) a fluid actuated boom cylinder, swing cylinder and directive cylinder to operate the boom base, boom head and directive guide. e) an upper arm pivotally connected to the directive guide, f) an upper arm rod being parallel to the upper arm and of equal length and pivotally connected to the directive guide, g) a parallel guide guided by the upper arm and the upper arm rod, h) an upper arm cylinder pivotally mounted on the upper arm, with a piston rod connected alternatively to one or the other arm of the two armed parallel guide. i) a lower arm pivotally connected to the parallel guide on the same axis as the upper arm but in another plane and carrying a tool at its other end. k) a lower arm cylinder pivotally mounted on the lower arm, with a piston rod connected to one or the other arm of the parallel guide, but not at the same arm as the upper arm cylinder rod. l) a known device, which controls fluid flow to and from the upper- and lower arm cylinders in such manner, that upper arm and lower arm move with equal but counterwise angles.
IPC 1-7
IPC 8 full level
E02F 3/30 (2006.01); E02F 3/42 (2006.01); E02F 3/96 (2006.01); E02F 9/18 (2006.01); E02F 3/32 (2006.01)
CPC (source: EP)
E02F 3/30 (2013.01); E02F 3/307 (2013.01); E02F 3/32 (2013.01); E02F 3/425 (2013.01); E02F 3/963 (2013.01); E02F 9/18 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0130236 A1 19850109; EP 0130236 B1 19861015; DE 3366984 D1 19861120
DOCDB simple family (application)
EP 83110255 A 19831014; DE 3366984 T 19831014