Heavy duty crane

Details Heavy duty crane Heavy duty crane

B - Operations, Transporting

66

C

212/41.1

B66C 23/00 (2006.01)

Patent

CA 1121312

ABSTRACT OF THE DISCLOSURE A crane is operable in either a regular mode or a heavy duty mode. In the regular mode, an upper works is rotatable, through a turntable bearing, on a lower works. A boom is pivotally connected to one end of the upper works and a counterweight is connected to the opposite end thereof. In the heavy duty mode, a support ring surrounds the lower works and is connected thereto. An auxiliary frame is mounted on the support ring, surrounding the upper works, for rotation on the ring in unison with rotation of the upper works. The boom used in the regular mode is pivotally connected to the auxiliary frame for use as a gantry, and a heavier boom is pivotally connected to the auxiliary frame adjacent the gantry. The counterweight of the machine in the regular mode is shifted to the auxiliary frame opposite the boom and gantry, and an auxiliary counterweight is added to the auxiliary frame.

363555

Affiliated with

Also associated with

Rating

Heavy duty crane does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heavy duty crane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heavy duty crane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-101783