When slinging, it is important to take a critical look at the height of the load’s centre of gravity. It is harmless if the load’s centre of gravity is lower than the attachment points. If, on the other hand, the load’s centre of gravity is above the attachment points, there is a risk of overturning. Caution: If the load is attached incorrectly, the system may tip over. Every load handling attachment has a “rigid headroom”. This rigid headroom is the dimension between the “contact point of the crane hook to the next hinge point below”, i.e. the height range of the spreader beam below the crane hook, which cannot change geometrically when the load swings. Low “rigid heights” have trusses with eye suspension (1). Higher “rigid overall heights” have trusses with a multi-strand suspension (2).
The rigid headroom (A) of the beam must always be significantly greater than the dimension “lifting point to centre of gravity of the load” (D). In the case of H trusses, both spatial axes must be assessed.
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