| 摘要 |
A fifth wheel type hitch adapted for engaging a king pin of a trailer comprises a hitch head with downwardly opening pivot saddles which are pivotally supported on pivot bearings on a hitch base such that the hitch head pivots fore and aft relative to the hitch base. Outer portions of the pivot bearings are preferably formed from polyurethane. Latches, secured to the hitch head adjacent each pivot saddle, biasingly engage the pivot bearings when the hitch head is supported on the hitch base to prevent the hitch head from being separated therefrom. Lift handles connected to each latch are graspable by a user and pivotal to advance the latches to an unlatching position such that the hitch head can be separated from the hitch base and such that further lifting on the lift handles lifts the hitch head off of the hitch base. The hitch head comprises an intermediate pivot frame, in which the pivot saddles are formed and a coupler assembly which is adapted to releasably engage the king pin. The coupler assembly is pivotally secured to the intermediate pivot frame and pivotal from side to side relative thereto. Side to side pivoting of the coupler assembly is damped by one or more shock absorbers.
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