EP 3735388 B1 20210721 - MOBILE CRANE WITH AN HYDRAULIC LUFFING EXTENSION BOOM
Title (en)
MOBILE CRANE WITH AN HYDRAULIC LUFFING EXTENSION BOOM
Title (de)
FAHRZEUGKRAN MIT EINER HYDRAULISCH WIPPBAREN HAUPTAUSLEGERVERLÄNGERUNG
Title (fr)
GRUE MOBILE AVEC UNE RALLONGE DE LA FLECHE PRINCIPALE HYDRAULIQUEMENT PIVOTABLE
Publication
Application
Priority
- DE 202018100059 U 20180105
- EP 2019050108 W 20190103
Abstract (en)
[origin: WO2019134943A1] The invention relates to a vehicle crane (1) having a main boom (4) and having a main boom extension (5) that is attached to the main boom (4) and can be luffed by means of a luffing cylinder (14). The aim of the invention is to provide a vehicle crane, the expenditure on maintenance and assembly of which is reduced and which can thus be provided more economically. This aim is achieved, according to the invention, in that the luffing cylinder (14) is connected to a hydraulic hose (13) in such a way that the hydraulic fluid either flows to the luffing cylinder (14) or flows away from the luffing cylinder (14), wherein the luffing cylinder (14) is connected to the hydraulic hose (13) by means of a single flow channel for supplying hydraulic fluid, and the hydraulic hose (13) is led along the main boom (4).
IPC 8 full level
B66C 13/20 (2006.01); B66C 23/68 (2006.01); B66C 23/70 (2006.01); B66C 23/82 (2006.01)
CPC (source: EP)
B66C 13/20 (2013.01); B66C 23/702 (2013.01); B66C 23/82 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 202018100059 U1 20180116; EP 3735388 A1 20201111; EP 3735388 B1 20210721; WO 2019134943 A1 20190711
DOCDB simple family (application)
DE 202018100059 U 20180105; EP 19700133 A 20190103; EP 2019050108 W 20190103