Bridge crane, especially a container-loading bridge

B - Operations – Transporting – 66 – C

Patent

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Details

B66C 19/00 (2006.01)

Patent

CA 2365423

Bridge crane, particularly container loading bridge, having a portal, a boom, a track system laid on the boom and crane trolleys which travel on the tracks, in which the track system comprises a working track (10), whose two rails have a mutual spacing corresponding to the wide spacing of the running wheels (12) of the crane trolleys (14) in a working position and a return track (16), whose two rails have a mutual spacing corresponding to the narrow spacing of the running wheels (18) of the crane trolleys (14) in a return position, as well as two arched pieces (18, 20) arranged about the area of the ends of the boom where the working track (10) and return track (16) meet, and the two wheel suspension mechanisms of the crane trolleys (14) are constructed so as to rotate freely about a vertical axis (22) and the two rotation axes (22) of the crane trolleys (14) are arranged with a spacing with respect to the longitudinal axis thereof corresponding to half the mutual spacing of the two rails of the return track (16).

L'invention concerne une grue portique, en particulier un portique de transbordement de conteneurs, comportant un portique, une flèche, un système de voies posé sur la flèche et des chariots roulants mobiles sur les voies. Selon l'invention, le système de voies comprend une voie de travail (10) dont les deux rails ont l'un par rapport à l'autre un écart correspondant à l'écart large des roues de roulement (12) des chariots roulants (14) dans une position de travail, une voie de retour (16) dont les deux rails ont l'un par rapport à l'autre un écart correspondant à l'écart étroit des roues de roulement (18) des chariots roulants (14) dans une position de retour, ainsi que deux cintres (18, 20) situés vers les extrémités de la flèche et dans lesquels la voie de travail (10) et la voie de retour (16) se rejoignent. Les deux suspensions des chariots roulants (14) peuvent pivoter librement autour d'un axe vertical (22) et les deux axes de rotation (22) des chariots roulants (14) sont placés, par rapport à l'axe longitudinal de ces derniers, à une distance correspondant à la moitié de l'écart des deux rails de la voie de retour (16).

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