Land vehicles: dumping – Tilting – Operating mechanism
Patent
1978-01-16
1979-04-10
Paperner, L. J.
Land vehicles: dumping
Tilting
Operating mechanism
298 22P, B60P 120
Patent
active
041485289
ABSTRACT:
A scissor frame for a truck hoist for stabilizing a dump body mounted upon a truck when it is lifted and tilted. The frame includes an upper leg and a lower leg hinged together by an offset pivot to permit the legs to fold against each other. The lower leg is connected to a saddle pivot mounted upon the truck frame. The upper leg is connected to a support pivot mounted upon the longitudinal base beams of the dump body, and when the dump body is retracted with the base beams lying upon the truck frame, the support pivot nests against the saddle pivot and the folded legs lie upon cross members of the truck frame in the space between the longitudinal base beams of the dump body.
To resist torsional and lateral strains, each leg is a torsionally-rigid, rectangular tube. The combined cross sectional height of the tubes, as when folded together, cannot exceed the distance between the truck frame cross members, whereon the lower leg will lie, and the cross sills of the dump body which are carried by the base beams.
The hoist is actuated by a pair of compound cylinders pivotally mounted on gusset plates at each side of the lower leg. Each cylinder extends to and is pivotally connected to an ear affixed to the upper leg or to the support pivot. The pivotal connections at the gusset plates and ears can be selectively located to position the cylinder for the most efficient operation.
REFERENCES:
patent: 2588489 (1952-03-01), Day
patent: 3043629 (1962-07-01), Schlueter et al.
patent: 3617090 (1971-11-01), Huffman et al.
patent: 3809429 (1974-05-01), Channell
Lowe Frank C.
Paperner L. J.
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