Couterbalanced tower crane

Details Couterbalanced tower crane Couterbalanced tower crane

B - Operations, Transporting

66

C

212/41.1

B66C 23/76 (2006.01) B66C 23/74 (2006.01)

Patent

CA 1114334

TITLE: COUNTERBALANCED TOWER CRANE Abstract of the Disclosure A vertical tower and lifting boom are counter- balanced by a separately supported counterweight unit. The counterweight unit is self-propelled and connected to a mobile tower platform by a horizontal stinger. A diagonal tower brace extends between the outer end of the stinger and the upper end of the tower for transmission of rotational forces about the vertical tower axis. A vertical counterweight strut is connected between the counterweight unit and the outer end of a pivoted stay- mast that extends rearwardly in opposition to the boom.

333741

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