US 12,291,437 B2
Extendable lattice type crane boom, and method for operating a crane including an extendable boom
Wilhelmus Coenradus Johannes Jozephus Woldring, Rotterdam (NL); and Mark Cornelius Marinus Franciscus Rommens, Maassluis (NL)
Assigned to GustoMSC B.V., Schiedam (NL)
Appl. No. 17/708,124
Filed by GustoMSC B.V., Schiedam (NL)
PCT Filed Nov. 9, 2020, PCT No. PCT/NL2020/050703
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/091389, PCT Pub. Date May 14, 2021.
Claims priority of application No. 2024203 (NL), filed on Nov. 8, 2019.
Prior Publication US 2024/0109758 A1, Apr. 4, 2024
Int. Cl. B66C 23/70 (2006.01)
CPC B66C 23/707 (2013.01) 25 Claims
OG exemplary drawing
 
1. An extendable lattice type crane boom for a crane, the boom comprising a lattice type base boom section and at least one lattice type telescopic boom section, wherein the at least one telescopic boom section is adjustable with respect to the base boom section between a retracted position, in which the telescopic boom section is substantially inside of the base boom section, and an extended position, in which the telescopic boom section is at least partly outside of the base boom section,
wherein a distal end of the base boom section comprises a first guiding system, the guiding system being configured to guide a movement of the telescopic boom section along the base boom section;
wherein a proximal end of the telescopic boom section comprises a second guiding system configured to guide a movement of the telescopic boom section along the base boom section;
wherein the base boom section comprises a third guiding system configured to guide a movement of the telescopic boom section along the base boom section, said third guiding system being spaced-apart from the first guiding system at a distance corresponding to a length of the telescopic boom section part remaining inside of the base boom section in the extended position of the telescopic boom section;
wherein the first guiding system comprises a first guide rail and a cooperating first guide element configured to be guided along the first guide rail, said first guide rail being provided on one of the base boom section and the telescopic boom section, and said first guide element being provided on the other of the base boom section and the telescopic boom section;
wherein the second guiding system comprises a second guide rail and a cooperating second guide element configured to be guided along the second guide rail, said second guide rail being provided on one of the base boom section and the telescopic boom section, and said second guide element being provided on the other of the base boom section and the telescopic boom section; and
wherein the third guiding system comprises a third guide rail and a cooperating third guide element configured to be guided along the third guide rail, said third guide rail being provided on one of the base boom section and the telescopic boom section, and said third guide element being provided on the other of the base boom section and the telescopic boom section.