Force-sensing fifth wheel

Details Force-sensing fifth wheel Force-sensing fifth wheel

B - Operations, Transporting

62

D

B62D 53/08 (2006.01) G01L 5/16 (2006.01)

Patent

CA 2326793

A sensing system employs multiple sensors utilizing mounting structure integrated into a fifth wheel hitch and which is protected from the environment, is capable of accurately measuring forces along longitudinal and vertical axes for providing information as to roll, pitch, yaw, and drawbar load and which utilizes sensors which provide output signals for display and control. In one embodiment, a fifth wheel includes mounting boxes formed on an undersurface thereof on opposite sides of the kingpin receiving slot and a force-sensing unit mounted within each of said mounting boxes. Each force-sensing unit includes a vertical sensor positioned fore and aft of the vertical hitch axis and forward and aft horizontal force sensors. In a preferred embodiment of the invention, each of the sensors are mounted to the sensing unit utilizing elastomeric springs coupling the fifth wheel plate to the force- sensing unit and a plunger for coupling forces from said elastomeric spring to a force sensor itself.

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