US 12,473,181 B2
Lifting device provided with an auxiliary device for counteracting tipover of the boom in sudden loss of load
Jan Gabriel, Afsnee (BE); and Jeroen Vanden Branden, Olen (BE)
Assigned to DEME Offshore BE NV, Zwijndrecht (BE)
Appl. No. 18/021,579
Filed by DEME Offshore BE NV, Zwijndrecht (BE)
PCT Filed Aug. 5, 2021, PCT No. PCT/EP2021/071898
§ 371(c)(1), (2) Date Feb. 16, 2023,
PCT Pub. No. WO2022/037960, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 2020/5573 (BE), filed on Aug. 17, 2020.
Prior Publication US 2023/0312311 A1, Oct. 5, 2023
Int. Cl. B66C 23/92 (2006.01)
CPC B66C 23/92 (2013.01) 15 Claims
OG exemplary drawing
 
1. An auxiliary device for counteracting tipover of a boom in the case of sudden loss of a load, wherein the auxiliary device can be connected to a base of a lifting device, provides a contact surface which comes into contact with a contact surface of the boom in the case of tipover, and further comprises a drive and control system which is configured to stop the boom movement when a predetermined force between the contact surfaces is exceeded as a result of the boom tipping over;
wherein the drive and control system is configured to hold the contact surface of the auxiliary device and the contact surface of the boom at a small mutual distance so that the boom is only capable of limited acceleration during tipover;
wherein the drive and control system comprises measuring means for measuring the mutual distance between the two contact surfaces; and
wherein the measuring means comprises optical measure means.