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Self unloading truck, trailer combo
A self-unloading tandem Mack truck and pup trailer, coupled by a special flexible hitch, let custom hay hauler Laurie Brownlee, Unity, Sask., carry 34 round bales at once.
A flexible pintle hitch and a 12 1/2-ft. by 8-ft. hydraulic folding gate, which bridges the gap between the trailer and truck bed, allow Brownlee to unload bales without unhooking the pup trailer. He hydraulically raises the back end of the pup trailer until it just touches the ground, raising the gate into a 6-ft. high folded position. Then he uses a 2-ft. high steel "push gate" on the front end of the pup trailer to push bales off.
After all bales are off the trailer, Brownlee levels it. Then he hydraulically lowers the folding gate until it meets the back of the truck. He then winches bales on the truck back onto the pup trailer, unloading it a second time. "Unloading takes just minutes and we're on our way for another load," says Brownlee.
The folding gate which bridges the gap between truck and trailer is the key to winching bales between the rigs, says Brownlee. The gate is made from 2 by 6 in. box iron and is hinged in two places. "The gate always is in the raised position except while we unload bales from truck to trailer," notes Brownlee. Two conventional hydraulic cylinders raise and lower the gate, while a larger cylinder raises and lowers the trailer.
The trailer and truck bed are each 27 ft. long and 81/2 ft. wide. Each rig can hold 14 big round bales or 17 smaller ones.
Contact: FARM SHOW Followup, Laurie Brownlee, Box 1172, Unity, Saskatchewan, Canada SOK 4L0.


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1988 - Volume #12, Issue #5