NOTE: Choose this subparagraph or the above
subparagraph entitled "Capstan Car Puller."
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NOTE: Designer shall detail required footings and
foundations based on the selected puller and soil
conditions at each plant site.
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[Single drum reversing] [Double drum] type designed with a capacity of not
less than [_____] kg pounds of running rope pull. Starting pull capacity
shall be not less than twice the running pull capacity. Provide assembly
on one-piece heavy steel base with weatherproof motor and gear reducers
suitable for exterior location.
a.
Puller: Unit shall consist of a [_____] mm inch pitch diameter by
[_____] mm inch face, spirally grooved for [_____] mm inch
diameter wire rope with sealed anti-friction bearings, alloy steel
ring mounted spur gear and SAE 1045 steel shaft. Provide an SAE
1045 steel countershaft with anti-friction pillow blocks and
heat-treated alloy steel spur pinion roller chain drive with steel
sprockets and enclosed guard.
Speed shall be a minimum of [_____]
m/s fpm.
(1) Electric Motor: [Totally enclosed], [fan cooled], high
starting torque, reversing type, [_____] volt, [_____] phase, 60
Hz, not less than [_____] kW hp, as specified under paragraph
entitled "Motors and Drives" in this section.
Provide clutch for
engaging and disengaging power to drum.
(2) Reduction Gear: AGMA 390.03A, "AGMA Gear Handbook," sized
for the motor horsepower with motor base and coupling. Motor
shall include motor mounted disc brake in dust and watertight
enclosure. Provide rope overwind switch assembly and rotary type
limit assembly.
b.
Accessories:
(1) Rope Sheaves: Provide four stationary type, 762 mm 30 inch
pitch diameter single sheaves and one 762 mm 30 inch take up
sheave assembly. Sheave shall be cast steel, grooved for [_____]
mm inch diameter rope and shall be oriented horizontally and
mounted in a welded steel frame with self-lubricating bronze
bushings. Provide removable steel rope guards over sheaves.
(2) Wire Rope: Wire rope shall be not less than [_____] mm inch
in diameter with a breaking strength of not less than [_____] kg
pounds. Rope shall consist of six 19 wire strands of improved
plow steel rope with hemp center.
(3) Safety Warning System: Provide a safety warning system,
including an audible horn and three flashing lights to indicate
cars in motion. System shall activate 30 seconds before puller
motor is energized and shall not deactivate until puller motor is
de-energized. Provide a permanent warning sign at each light
indicating "RAILCAR IN MOTION."
(4)
Miscellaneous:
Provide reversing controls, car hooks, snatch
SECTION 15502N
Page 99
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