Boom support assembly

Details Boom support assembly Boom support assembly

1990-09-18

1992-08-11

Peters, Jr., Joseph F.

Traversing hoists

Having horizontally swinging boom or bridge

Having trolley thereon

212186, 212201, 212202, 212167, 212177, 212176, 212179, B66C 2362, B66C 2342, B66C 2300, B66C 2334

Patent

active

051371618

ABSTRACT:
A boom support assembly for an earth working machine, which includes a winch, a pair of tension members and a pendant pin link interposed between tension members. The first tension member is a boom support pendant secured to a boom point of a boom and the first end of the pendant pin link. The second tension member is a boom raising rope which is received over a plurality of gantry sheaves mounted on the top portion of a gantry structure and attached to the winch at one end and attached to the second end of the pendant pin link. The gantry sheaves are mounted on an alignment apparatus that has a sheave shaft mounted in an eccentric bore of a pair of cartridges rotatable in the top portion of the gantry structure. This alignment apparatus insures the proper positioning of a through bore of the pendant pin link between support openings in the top portion of the gantry.

REFERENCES:
patent: 2191696 (1936-10-01), Jacoby et al.
patent: 3757959 (1973-09-01), Thompson et al.
patent: 4038765 (1977-08-01), Sankey et al.
patent: 4096957 (1978-06-01), Iverson et al.
patent: 4251182 (1981-02-01), Schroeder
patent: 4428255 (1984-01-01), Fischer
patent: 4491436 (1985-01-01), Easton

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