US 11,912,542 B2
Lifting device having an apparatus for assisting or for fully automatically carrying out an erection or placing down procedure of a boom system and corresponding method
Walter Mietschnig, Brand (AT); Manfred Schapler, Vandans (AT); and Tizian Lamprecht, Bludesch (AT)
Assigned to LIEBHERR-WERK NENZING GMBH, Nenzing (AT)
Filed by Liebherr-Werk Nenzing GmbH, Nenzing (AT)
Filed on Mar. 17, 2022, as Appl. No. 17/655,269.
Claims priority of application No. 10 2021 106 745.6 (DE), filed on Mar. 19, 2021.
Prior Publication US 2022/0297989 A1, Sep. 22, 2022
Int. Cl. B66C 23/82 (2006.01); B66C 13/46 (2006.01); B66C 23/68 (2006.01)
CPC B66C 23/82 (2013.01) [B66C 13/46 (2013.01); B66C 23/68 (2013.01); B66C 2700/0392 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A lifting device comprising:
a superstructure;
a main boom that starts from the superstructure;
a luffing boom that starts from an end of the main boom remote from the superstructure;
a winch arrangement at the superstructure and/or at the main boom;
a tilting moment detection unit comprising a control unit having instructions stored therein for determining a tilting moment acting on the lifting device by a position of the main boom and the luffing boom; and
an assisting apparatus comprising a controller having instructions stored therein for carrying out an erecting and/or placing down procedure of a boom system, the boom system comprising the main boom and the luffing boom, the erecting procedure of the boom system comprising movement of the main boom and the luffing boom away from a placed down position to an erected position where, in the placed down position, the main boom, the end of the main boom, and the luffing boom extend horizontally away from the superstructure and rest on a ground surface, and where, in the erected position, the end of the main boom and the luffing boom extend vertically above and do not rest on the ground surface, and the placing down procedure of the boom system comprising movement of the main boom and the luffing boom from the erected position to the placed down position,
wherein the assisting apparatus is an apparatus for assisting or for fully automatically carrying out an erecting and/or placing down procedure of the boom system comprising the main boom and the luffing boom that is configured to carry out steps for the erecting and/or placing down procedure of the boom system in dependence on the tilting moment detected by the tilting moment detection unit.