Global Patent Index - EP 3742001 A1

EP 3742001 A1 20201125 - HYDRAULIC SYSTEM HOISTING AND AUTO-LEVELLING A TOOL

Title (en)

HYDRAULIC SYSTEM HOISTING AND AUTO-LEVELLING A TOOL

Title (de)

HYDRAULIKSYSTEM ZUM ANHEBEN UND AUTOMATISCHEN NIVELLIEREN EINES WERKZEUGS

Title (fr)

SYSTÈME HYDRAULIQUE DE LEVAGE ET DE MISE À NIVEAU AUTOMATIQUE D'UN OUTIL

Publication

EP 3742001 A1 20201125 (EN)

Application

EP 20165275 A 20200324

Priority

IT 201900007047 A 20190521

Abstract (en)

Hydraulic system (1) for hoisting and auto-levelling a tool connected to a hoisting arm, comprising:- a first supplying and unloading port/connection (2) and a second supplying and unloading port/connection (3) directly or indirectly connected or connectable to a storage reservoir and a pump for pressurizing a working fluid;- a hoisting actuator group (4) connected or connectable by said hoisting arm to the tool for hoisting/lowering it, and having a first port/connection (6) for gaining access to a first chamber thereof, and a second first port/connection (7) for gaining access to a second chamber thereof;- an aligning actuator group (5) connected or connectable to the tool and hoisting arm for holding the tool according to an orientation predefined during said hoisting/lowering steps and having a first port/connection (8) for gaining access to a first chamber thereof and a second port/connection (9) for gaining access to a second chamber thereof;- a first flow divider (10) comprising an inlet (12), a first outlet (13) and a second outlet (14), configured to separate a flow rate entering the inlet (12) in a first and second predefined flow rates exiting the first (13) and second outlets (14), respectively;- a second flow divider (11) comprising an inlet (21), a first outlet (22) and a second outlet (23), configured to separate a flow rate entering the inlet (21) in a first and second predefined flow rates exiting the first (22) and second outlets (23), respectively,wherein:- the inlet (12) of the first flow divider (10) is fluidically connected to the second port/connection (7) of the hoisting actuator group (4);- the first outlet (13) of the first flow divider (10) is fluidically connected to the second supplying and unloading port/connection (3);- the second outlet (14) of the first flow divider (10) is fluidically connected to the first port/connection (8) of the first aligning actuator (5);- the inlet (21) of the second flow divider (11) is fluidically connected to the first port/connection (6) of the hoisting actuator group (4);- the first outlet (22) of the second flow divider (11) is fluidically connected to the first supplying and unloading port/connection (2);- the second outlet (23) of the second flow divider (11) is fluidically connected to the second port/connection (9) of the aligning actuator group (5).

IPC 8 full level

F15B 11/22 (2006.01); B66F 7/20 (2006.01); B66F 9/22 (2006.01); E02F 3/43 (2006.01); F15B 11/20 (2006.01); F15B 13/02 (2006.01)

CPC (source: EP)

B66F 9/22 (2013.01); F15B 11/205 (2013.01); F15B 11/22 (2013.01); F15B 13/022 (2013.01); E02F 9/2239 (2013.01); F15B 2211/4053 (2013.01); F15B 2211/40569 (2013.01); F15B 2211/426 (2013.01); F15B 2211/428 (2013.01); F15B 2211/7053 (2013.01); F15B 2211/7121 (2013.01); F15B 2211/782 (2013.01)

Citation (search report)

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3742001 A1 20201125; EP 3742001 B1 20230125; IT 201900007047 A1 20201121

DOCDB simple family (application)

EP 20165275 A 20200324; IT 201900007047 A 20190521