EP 0132572 B1 19870128 - CRANE WITH A TELESCOPIC TOWER
Title (en)
CRANE WITH A TELESCOPIC TOWER
Publication
Application
Priority
DE 3322268 A 19830621
Abstract (en)
[origin: EP0132572A1] 1. A crane comprising a telescopic tower (4, 7), which is secured to a revolving superstructure or to the rotating deck (2) of a portal (12) and has an extensible part (7), which at its upper end is articulatedly connected to the inner girder section (9) of the jib, wherein an outer girder section (11) of the jib is hinged to the inner girder section (9) at the outer end thereof, comprising a counterbalancing jib (24), which is secured to the top end of the extensible part and has a free end, wherein a rear guy rope (12), which is fixed (at 13) to the revolving superstructure or to the rotating deck and from said fixing point extends around said free end to a fixed point (15) at the outer end of a jib support (16), which is hinged to the top end of the extensible part, comprising two additional forward guy ropes (17, 19), which are secured to the fixed point (15) of the jib support, wherein the end of the first (17) of said additional guy ropes is secured to the outer portion (18) of the inner girder section, the other end of the second guy rope is secured to the end (24) of a central support (21), a third guy rope (22) is secured to the end (24), and the other end of the third guy rope (22) is secured to the outer portion (23) of the outer girder section of the beam, and comprising a rope (26), which is secured to the outer girder section and is trained around a pulley (32) at the end of the central support and around a deflecting pulley (31) of the inner girder section and around additional deflecting pulleys (27, 27', 30) and then extends to an assembling winch (25), by which the outer girder section is pivotally movable relative to the inner girder section of the jib, characterized in that the rope (26) is trained around two coaxial deflecting pulleys (27, 27'), which are rotatably mounted on the rear end portion of the counter-balancing jib (24), which is rigidly connected to the extensible part (7), and the rope (26) is trained between said deflecting rollers (27, 27') around a pulley of a block (28), which carries a ballast hook and is movable as far as to a stop, and the tower (4, 7) is pivoted and provided with a luffing drive (5, 6).
IPC 1-7
IPC 8 full level
B66C 23/34 (2006.01); B66C 23/74 (2006.01)
CPC (source: EP)
B66C 23/342 (2013.01); B66C 23/74 (2013.01)
Designated contracting state (EPC)
AT BE NL
DOCDB simple family (publication)
EP 0132572 A1 19850213; EP 0132572 B1 19870128; AT E25230 T1 19870215; DE 3322268 A1 19850117; DE 3322268 C2 19870219
DOCDB simple family (application)
EP 84106894 A 19840615; AT 84106894 T 19840615; DE 3322268 A 19830621