Load control device for a crane

(19)

(11)

EP 1 894 881 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	30.11.2011 Bulletin 2011/48

(43)	Date of publication A2:
	05.03.2008 Bulletin 2008/10

(21)	Application number: 06120670.2

(22)	Date of filing: 14.09.2006

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International Patent Classification (IPC):

B66C 13/08^(2006.01)

B66C 13/46^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

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Priority:

29.08.2006 US 511502

(71)	Applicant: ABB AB
	721 83 Västerås (SE)

(72)	Inventor:
	HENRIKSSON, Björn 72355 Västerås (SE)

(74)	Representative: Dahlstrand, Björn
	ABB AB Intellectual Property Ingenjör Bååths Gata 11 721 83 Västerås 721 83 Västerås (SE)

(54)	Load control device for a crane

(57) A control device and system for controlling a suspended load of a container crane with a trolley (21), a spreader (15) and load lines arranged in a four point suspension (4a-4d) for lifting a load and an optical sensor (5) for sensing a deflection position of an orthogonal axis (X,Y,V) of a container (20) suspended under the spreader. Two or more actuators (16-19) are arranged attached to at least one load for moving at least one said suspension point closer to or farther away from an imaginary centre line (X_L,Y_W,V_H) by shortening and/or lengthening the at least one load line.

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