A self-erecting crane (1) with bottom slewing comprising a support structure (10), a base (16) rotatable with respect to said support structure (10), a tower (20) arranged integrally on said base (16) and a loading arm (60) composed of one or more portions (61, 64, 66) articulated with each other and hinged to said tower (20) at a joint zone (22), said crane (1) being configurable between an operational working configuration and a non-operational transport configuration, wherein, in said working configuration, said tower (20) is arranged in an upright position and superiorly supports said loading arm (60) at said joint zone (22), and in said transport configuration, said tower (20) and said loading arm (60) are folded one above the other; said tower (20) comprises:- a lower telescopic sector (24) comprising a first portion (26) extending longitudinally along a main axis (X) and a second portion (28) slidably associated with respect to said first portion (26), said first portion (26) comprising a first end (26a) hinged to said base (16) at a first fulcrum (F1);- sliding means (30) adapted to position said second portion (28) in a retracted position with respect to said first portion (26) and at least one moved-away position with respect to said first portion (26) ;and in that it comprises a boom (40) having a first end (42) hinged to said base (16) at a second fulcrum (F2) spaced apart from said first fulcrum (F1), and a second end (44) hinged to said second portion (28) of said lower telescopic sector (24) at a third fulcrum (F3) spaced apart from said first fulcrum (F1) and from said second fulcrum (F2).
A SELF-ERECTING CRANE WITH BOTTOM SLEWING
EIN SELBSTAUFRICHTENDER KRAN MIT UNTENDREHUNG
UNE GRUE AUTO-MONTANTE AVEC ROTATION BASSE
2025-02-12
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |