US 11,795,039 B2
Locking device for a telescopic boom, telescopic boom, and mobile crane
Detlef Uderhardt, Lauf an der Pegnitz (DE)
Assigned to TADANO FAUN GmbH, Lauf a.d. Pegnitz (DE)
Filed by TADANO FAUN GMBH, Lauf a. d. Pegnitz (DE)
Filed on Apr. 14, 2022, as Appl. No. 17/720,500.
Claims priority of application No. 10 2021 203 700.3 (DE), filed on Apr. 14, 2021.
Prior Publication US 2022/0332551 A1, Oct. 20, 2022
Int. Cl. B66C 23/70 (2006.01); B66C 23/00 (2006.01)
CPC B66C 23/708 (2013.01) [B66C 23/54 (2013.01); B66C 2700/0371 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A locking device for a telescopic boom, the locking device comprising:
an actuator for generating an actuating force;
at least one driver configured to be reversibly coupled, during a telescoping movement of the telescopic boom, to a locking bolt that is secured at a boom extension segment of the telescopic boom, and to be moved by the actuating force for adjusting the locking bolt between a locking position and a release position;
at least one driver bolt configured to be reversibly moved by the actuating force between a carry-along position, gripping an inner boom extension segment, and an empty running position in which no boom extension segment is gripped; and
a slotted actuating link configured for a joint movement of the locking bolt and said at least one driver bolt, said slotted actuating link, in an installation state as intended, defining a movement plane perpendicular to a telescoping direction of the telescopic boom.