EP 0879208 B1 20040407 - A HYDRAULIC BOOM CRANE WITH LOAD CONTROL SYSTEM
Title (en)
A HYDRAULIC BOOM CRANE WITH LOAD CONTROL SYSTEM
Title (de)
HYDRAULISCHER AUSLEGERKRAN MIT LASTSTEUERSYSTEM
Title (fr)
GRUE HYDRAULIQUE A FLECHE AVEC SYSTEME DE COMMANDE DE CHARGE
Publication
Application
Priority
- DK 9700054 W 19970207
- DK 12396 A 19960207
Abstract (en)
[origin: WO9729038A1] A load control system preferably for hydraulic cranes comprising at least one relevant signalling device connected to a control unit which, by loading of the crane beyond its nominal load rate, operates a dump valve for deactivation of such functions in the manually operable control-valve assembly, which may be actuated to cause an increase of the load on the crane. The special feature of this load control system is that it operates according to an educational principle of collective "punishment", comprising a total inactivation of the functions of the crane in a penalty period in case of attempts to exceed the nominal load rate of the crane, within a safety margin. By an increasing load on the crane, the control system calculates new penalty periods and load rates beyond the nominal load rate within a safety margin, and the control system will induce a constantly increasing penalty period in response to the extent and number of excesses. The educational principle consists in that the risk of the release of a penalty will cause the operator to adopt a better feeling of how much the crane can be loaded within its nominal load rate.
IPC 1-7
IPC 8 full level
B66C 23/90 (2006.01)
CPC (source: EP)
B66C 23/90 (2013.01)
Designated contracting state (EPC)
AT BE DE DK ES FI FR GB IT NL PT SE
DOCDB simple family (publication)
WO 9729038 A1 19970814; AT E263731 T1 20040415; AU 1540897 A 19970828; DE 69728522 D1 20040513; DE 69728522 T2 20050407; EP 0879208 A1 19981125; EP 0879208 B1 20040407; ES 2221949 T3 20050116
DOCDB simple family (application)
DK 9700054 W 19970207; AT 97901526 T 19970207; AU 1540897 A 19970207; DE 69728522 T 19970207; EP 97901526 A 19970207; ES 97901526 T 19970207