Tracking, propulsion and braking system for bridge tripper/hopper car
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United States of America Patent
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Sep 9, 2008
Grant Date -
N/A
app pub date -
May 17, 2002
filing date -
Aug 7, 1998
priority date (Note) -
In Force
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Abstract
A tripper/hopper car rides on a conveyor via four wheel tires running on T-section rails, with respective hold down wheels riding adjacent the underside of the rails and respective caster side wheels riding adjacent the vertical edges of the T-rails. Each wheel tire is driven by a motor drive unit employing a shaft-mount gearbox with a motor brake that utilizes the reduction of the drive gearbox to increase the effective braking torque developed. A pair of caliper-type brakes is further provided for redundancy.
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