EP 3889095 B1 20220817 - A METHOD OF CONTROLLING A CRANE, AND A CRANE
Title (en)
A METHOD OF CONTROLLING A CRANE, AND A CRANE
Title (de)
VERFAHREN ZUR STEUERUNG EINES KRANS UND KRAN
Title (fr)
PROCÉDÉ DE COMMANDE D'UNE GRUE ET GRUE
Publication
Application
Priority
SE 2050359 A 20200331
Abstract (en)
[origin: EP3889095A1] A crane (1) comprising a movable arm (2), and a tool (9) provided at an end of the movable arm (2). The crane (1) comprises a control system configured to a) detect a first condition in which the tool (9) is in a holding position and the movable arm (2) is in an unloaded condition in which it is not actively lifting an object held by said tool (9), b) registering a first point of time at which the first condition is obtained and counting a period of time (t) from the first point of time, and, c) when the counted period of time (t) exceeds a threshold value (t<sub>threshold</sub>), activating a safe operation mode in the control system which prevents a first hydraulic device (3, 4, 5) from moving the movable arm (2), said safe operation mode being deactivatable by an actuation of a second hydraulic valve for controlling the holding position of the tool (9).
IPC 8 full level
B66C 23/68 (2006.01); B66C 23/88 (2006.01)
CPC (source: EP SE)
B66C 13/18 (2013.01 - SE); B66C 15/00 (2013.01 - SE); B66C 23/54 (2013.01 - EP); B66C 23/88 (2013.01 - EP SE); B66C 1/42 (2013.01 - SE)
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)
EP 3889095 A1 20211006; EP 3889095 B1 20220817; DK 3889095 T3 20221031; SE 2050359 A1 20211001; SE 544031 C2 20211109
DOCDB simple family (application)
EP 21165232 A 20210326; DK 21165232 T 20210326; SE 2050359 A 20200331