Patent ID: 11912542
Assignee: LIEBHERR-WERK NENZING GMBH
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. The method in accordance with claim 13, wherein, on a placing down of the boom system from an erected position:
the luffing boom is traveled with respect to the main boom in the lowering direction, with, provided that the tilting moment detected by the tilting moment detection unit exceeds a threshold value, the main boom first being traveled in the lifting direction; and
as soon as travel of the luffing boom with respect to the main boom in the lowering direction has a result that the luffing boom has passed through the horizontal, the luffing boom is traveled with respect to the main boom in the lowering direction simultaneously with the main boom in the lowering direction, provided that the tilting moment detected by the tilting moment detection unit does not exceed a threshold value.