Red Clay In Class 8 Rear Dump Trailer
Red Clay In Class 8 Rear Dump Trailer
(OP)
We make a Class 8 rear dump trailer, full frame. A customer is having problems with the trailer dumping red clay. The trailer goes to 43 degrees, as designed. The cylinder has no issues going all the way up. The trailer has a HMW Liner. They are working in the South.
They pulled the trailer to the manufacturing plant. When the trailer was at 43 degrees, we could see a lot of red clay still in the dump body. It pretty much covered the floor and the radius corners. And, none of it moved when it articulated up to 43 degrees. The customers says they have men going into the trailer and manually dumping.
The question is, what are our options as an engineer to fix this for the customer? Someone suggested a vibrator kit. Would that help? Our initial thoughts are that because of the red clay, and it is sticking to the liner and body, it probably won't fix the issue. We are looking for options to solve this issue.
Thanks,
They pulled the trailer to the manufacturing plant. When the trailer was at 43 degrees, we could see a lot of red clay still in the dump body. It pretty much covered the floor and the radius corners. And, none of it moved when it articulated up to 43 degrees. The customers says they have men going into the trailer and manually dumping.
The question is, what are our options as an engineer to fix this for the customer? Someone suggested a vibrator kit. Would that help? Our initial thoughts are that because of the red clay, and it is sticking to the liner and body, it probably won't fix the issue. We are looking for options to solve this issue.
Thanks,





RE: Red Clay In Class 8 Rear Dump Trailer
RE: Red Clay In Class 8 Rear Dump Trailer
RE: Red Clay In Class 8 Rear Dump Trailer
mix with lime?
RE: Red Clay In Class 8 Rear Dump Trailer
RE: Red Clay In Class 8 Rear Dump Trailer
You might do some tests with samples of different plastics to see if one helps more, but I doubt it.
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RE: Red Clay In Class 8 Rear Dump Trailer
If the supplying vendor is not on the hook for a dump bed that handles this material, then don't accept responsibility.
A live bottom dump bed which would be a continuous belt conveyor with belt scraper/cleaner at the exit end of the dump bed would force the material out IF the clay wasn't sticking fiercely to the side walls.
It may work to use a one-time-use polyethylene sheet liner for each load that would allow the material to slide out, as already suggested by hokie66.
RE: Red Clay In Class 8 Rear Dump Trailer
I was talking to a construction company. And, they mentioned using concrete form oil. I was thinking some kind of oil. The only stipulation is that the customer is using the red clay for commercial use. So, my concern is would using the concrete form oil affect the red clay?
I was thinking also if we can put a UHMW material liner. Could we coat the liner, with something permanent, so that they won't have to apply the concrete form oil?
RE: Red Clay In Class 8 Rear Dump Trailer
Get some clay and start testing on different surfaces, tilting up from horizontal. Wet clay is going to be stickier, so don't convince yourself of anything without assessing just how wet this clay can get.
RE: Red Clay In Class 8 Rear Dump Trailer
A very thin water layer might do the trick or insert some very small holes in the trailer and pump a water film in before tipping it.
think of an air hockey table but with water. A bit extreme maybe, but if you're going to be hauling this for months / years its a better way and doesn't do anything to the product.
If you've already got a plastic liner yu might be able to get one with holes built in?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Red Clay In Class 8 Rear Dump Trailer
RE: Red Clay In Class 8 Rear Dump Trailer
Do bobtails go any steeper?
I'd be very hesitant about the oil solutions. I think that is (or was) common with asphalt, but there, you have a petroleum soaked product anyway. Soil contamination can run into a lot of money in a hurry.
RE: Red Clay In Class 8 Rear Dump Trailer