Patent ID: 8397924
Filing Date: 2013-03-19
Classification: B66C,B66D,F16B,Y10T

Abstract:
1. A method of transporting and assembling a mobile lift crane, the lift crane comprising, during operation, i) a rotating bed, ii) a boom pivotally mounted on the rotating bed, iii) a first hoist drum mounted in a frame secured to the rotating bed, iv) a second hoist drum mounted in a frame secured to the rotating bed, and v) at least a first other major crane component selected from the group consisting of a mast, a mast stop, a backhitch and a boom stop, the method comprising: a) transporting the first hoist drum mounted in its frame to a job site; b) transporting the second hoist drum mounted in its frame to the job site; c) transporting the rotating bed to the job site without either of the first hoist drum or second hoist drum being connected to the rotating bed; d) pinning the first hoist drum frame to the rotating bed at the job site; and e) pinning the first other major crane component indirectly to the rotating bed at the job site such that forces directed along a line of action of the major crane component are transferred through the frame of the first hoist drum to the rotating bed.