Boxcar Unloader
Basic Design
The Straight Boxcar Unloader was designed to unload free flowing materials, such as grain, from standard railroad box cars loaded to maximum gross weight of 220,000 lbs. (100 metric tons) and from 36' (11 meters) to 50'6" (15.4meters) in length.
Unloading is accomplished by placing the box car in a sufficiently tilted position to permit the free flow of grain through one door. The car is initially side tilted to 18° simultaneously with the removal of the grain doors and then end tilted in each direction. Three end tilt movements are required with a baffle hydraulically inserted into the car to completely remove the grain during the third movement.
Operating Cycles
The time required to complete a cycle can be varied initially by appropriately sizing the main hydraulic pump supplying fluid to the main cylinder. The pump is normally sized for 5 minute cycle, excluding switching time, as this coincides nicely with the flow of grain from the car.
The clamp, door-breaker and baffle mechanisms are designed to operate at maximum desirable speeds. These speeds can easily be adjusted individually after installation through simple flow control devices provided in the cradle hydraulic system.
Boxcar unloader image
