B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
212/27
B66C 23/06 (2006.01) B66C 23/26 (2006.01)
Patent
CA 1238880
ARTICULATION FOR TOWER CRANE BOOM THAT HAS A PARKING POSITION Abstract of the Disclosure The inner end of a tower crane boom is connected to the top of its tower by two lugs fixed on the tower, each having an upwardly opening slot, and two trunnions fixed on the inner end portion of the boom, one for each lug, each rotatably seatable in the rounded bottom of the slot in its lug. The slot bottom in one lug defines a first fixed axis, midway between the front and rear sides of the tower, about which the boom swings in its range of working positions; that in the other lug defines a second fixed axis, near the front side of the tower, about which the boom swings to and from an inopera- tive position wherein it extends along the front side of the tower. The distance between the trunnion axes equals the distance between the fixed axes. Links confine the boom against moving to a position in which neither trunnion is seated in the slot in its lug. Each link has a pivot connection with the tower at a fixed axis defined by one lug and a pivot connection with the boom at the axis defined by the trunnion for the other lug. Preferably, lugs, trunnions and links are duplicated at opposite sides of a vertical plane of symmetry.
461335
Harnischfeger Corporation
Smart & Biggar
LandOfFree
Articulation for tower crane boom that has a parking position does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Articulation for tower crane boom that has a parking position, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Articulation for tower crane boom that has a parking position will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1216152