Global Patent Index - EP 0166701 A1

EP 0166701 A1 19860102 - Auxiliary safety sistem for tower rotating crane.

Title (en)

Auxiliary safety sistem for tower rotating crane.

Title (de)

Hilf-Sicherheitsanlage für Turmdrehkran.

Title (fr)

Système auxiliaire de sécurité pour une grue à tour pivotante.

Publication

EP 0166701 A1 19860102 (EN)

Application

EP 85830146 A 19850613

Priority

IT 3161984 U 19840613

Abstract (en)

An auxiliary safety system for crane and particularly for tower crane with horizontal sewing jib. In order to give the greatest safety either to such slewing jib against yieldings of those mechanical members or elements which are provided to maintain them in their horizontal slowing state, and to the upper slewing section of the crane tower the axis of which is to be maintained in its vertical position within the forecast limits of tolerance, such auxiliary safety system comprises a first auxiliary safety means formed by tension ropes (20, 21) operating elastically through the co-operation of spiral springs (28) to maintain the jib/jibs (11, 12) in their horizontal slewing plane, and a second auxiliary safety means formed by a cage (16) extended upwards from the area of thrust bearing (15) between stationary and slewing sections (13, 14), respectively of crane tower and provided with a top collar (30) on the inner perimetrical surface of which rollers (31) mounted on said slewing section (14) are pushed elastically and rolling, in order to maintain the axis of this latter in its vertical, central position.

IPC 1-7

B66C 23/26; B66C 23/88

IPC 8 full level

B66C 23/26 (2006.01); B66C 23/88 (2006.01)

CPC (source: EP)

B66C 23/26 (2013.01); B66C 23/88 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0166701 A1 19860102; IT 8431619 V0 19840613

DOCDB simple family (application)

EP 85830146 A 19850613; IT 3161984 U 19840613