Structural connectors for dragline boom and mast tubular clusters and methods for repair, reinforcement and life extension of dragline booms and masts
AssigneeBMT WBM Canada Consulting Engineers Inc.
InventorsCharles Peter CONSTANCON, Arlon John Thomas RATCLIFF, Harold BYDEMAST
Life of this patent
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Abstract
A construction for a boom such as a dragline boom provides a spade plate that connects lacing members to a main chord at a cluster. The spade plate is curved. One edge of the spade plate has tabs attached to the lacing members. Another edge of the spade plate is attached to the main chord. The spade plate may be applied for new construction or repair.
Claims42
A boom comprising a cluster joint, the cluster joint comprising:
- a curved spade connector attached to a main chord of the boom, the curved spade connector having a concave side facing to one side of the main chord and a convex side facing an opposing side of the main chord;
- and
- a plurality of lacing members connected to connection locations on the curved spade connector.
A spade connector for use in coupling lacing members to a main chord of a boom, the spade connector comprising a one-piece curved plate having a concave face and a convex face, a first edge for connection to the main chord of the boom, and a plurality of tabs projecting from a second edge opposed to the first edge.
Dependencies are inferred from the claim text.