Material or article handling – Load bridging vehicle
Patent
1986-09-29
1988-10-11
Spar, Robert J.
Material or article handling
Load bridging vehicle
2941194, 414498, 414917, B60P 300
Patent
active
047767480
ABSTRACT:
The present invention provides a tractor-trailer vehicle for use in transporting ladles of molten metal. The trailer includes a generally U-shaped main frame, each side carrying a wheel assembly and a carrier beam pivotally interconnected at one end to the side. A transverse U-shaped overhead beam pivotally interconnects at each end to the carrier beams intermediate their ends, and has parallel ladle trunnion-engaging hooks pendantly disposed therefrom. Actuators interconnected between the main frame and the other end of the carrier beams provide a lever action rotating the carrier and overhead beams about the carrier beam-main frame pivot connection. The actuators are gimbaled to prevent load-induced binding. Upon such beam rotation, the overhead beam and hooks move substantially vertically to lift and lower the ladle from and to its supporting surface, respectively. Stabilizer rods extending between the overhead beam and the main frame cause the overhead beam to pivot about its interconnections during rotation of the carrier beams. The overhead beam and hooks are thus maintained in a constant vertical alignment providing substantially vertical lifting and lowering forces on the ladle trunnions. A ladle restraining assembly is provided to substantially eliminate movement induced swinging of ladle during transport.
REFERENCES:
patent: 3378155 (1968-04-01), Steiner
patent: 3958707 (1976-05-01), Deppe
patent: 4105130 (1978-08-01), Hardwick et al.
patent: 4122961 (1978-10-01), Kress
patent: 4601630 (1986-07-01), Kress et al.
patent: 4624618 (1986-11-01), LaBerdia et al.
Klein Equipment, Inc.
Millman Stuart J.
Sefrna Ronald B.
Spar Robert J.
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