pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 113)<br />
ll'-9" wide x approximately 20*-0" high arched opening at its<br />
center, extending 2*-3 1/8" below the floor line of the building.<br />
The opening facilitates the installation of the car dumper's<br />
platen and accommodates the entry and exit of railroad hopper<br />
cars. The base of the opening in each ring supports the platen.<br />
The platen consists of two large steel columns, spaced 4 , -8 1/2"<br />
apart, which support a set of standard gauge railroad tracks<br />
located on top of a 11•-9" wide x 60'-0" long x 2" thick platform<br />
set at the building floor level. Laid out on a north-south axis<br />
about the centerline of the car dumper, the platen is hooked at<br />
its supporting steel columns to a drive shaft extending along the<br />
centerline of the structure. Between the platen tracks and<br />
located at each rail are the platen retarders. The retarders are<br />
pneumatically operated steel shoes which clamp onto the wheels of<br />
a railroad hopper car just prior to its rotation.<br />
A set of four linearly designed clamp beam and double post<br />
assemblies, used for securing the top of hopper cars to the car<br />
dumper, form a bridge across the platen tracks. The posts in<br />
each assembly are spaced 12'-0" apart about the centerline of the<br />
tracks. The distance between the clamp beams is 10'-0" with the<br />
outside clamp beams located 15'-0" respectively from the car<br />
dumpers northern and southern ring. Each assembly consists of a<br />
I'-O" wide x 12 f -0" long x 2'-9 1/2" steel plate constructed<br />
movable clamp beam spanning a pair of steel columns located, one<br />
each, on the eastern or western side of the platen. Each column<br />
in the assembly is equipped with a roller wheel attachment which<br />
rides up and down fixed columns by means of an interconnecting<br />
wire rope and sheave wheel arrangement. On the eastern side of<br />
the platen the fixed columns are part of the supporting steel<br />
framework welded to each ring and the platen. The fixed columns<br />
on the western side of the platen are encased in the spill truss<br />
which is welded to each ring of the dumper. The steel plate<br />
constructed spill truss is l f -6" wide x 60'-0" long x 14'-0"<br />
high. It is used to support the side of a hopper car as it is<br />
being rotated.<br />
The dumper is powered by a 40/80 hp Westinghouse Induction<br />
Motor running at 1400/700 rpm. The motor is connected to a size<br />
180 Jones-Herringbone Speed Reducer with a ratio of 13.3-1. A 6"<br />
diameter line shaft runs through the speed reducer to the north<br />
and south ends of the dumper where it connects into a Link Belt<br />
pinion gear drive run in an oil bath which turns a chain drive<br />
wrapped around each ring of the dumper thereby rotating the<br />
structure.<br />
Located above and running the entire length of the car<br />
dumper is a system of water sprays which are used to clear the<br />
air of dust after the contents of the hopper cars have been