| 摘要 |
An automatic fifth wheel loading and unloading system which is designed to automatically unlock and disengage a trailer from the fifth wheel apparatus in a towing vehicle such as a pickup truck and level and then recouple the trailer to the vehicle. The automatic fifth wheel loading and unloading system initially raises the trailer coupler a predetermined distance, unlocks the trailer hitch mechanism in the fifth wheel and opens it on command. The truck or towing vehicle is then pulled forwardly from beneath the trailer coupling mechanism and the trailer is automatically lowered into a level position. When the trailer is to be recoupled to the towing vehicle, the trailer is automatically raised to an access position by operation of a memory circuit, the truck is positioned such that the fifth wheel mechanism is located beneath the trailer coupling mechanism and the trailer coupling mechanism is automatically lowered into engagement with the fifth wheel. Infrared transmitter and receiver devices are utilized to insure proper clearance between the trailer coupling mechanism and the fifth wheel as well as sensing the level position of the trailer.
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