| 摘要 |
In the present hull and keel support, a pair of cross members are pivoted about parallel horizontal fulcrum axes and extend transversely across a boat trailer frame. Each cross member includes a central keel receiver on one side of the associated fulcrum axis. Gimbal arrangements pivotably mount the hull engaging members and establish a first pivot axis parallel to the fulcrum axis, enabling the hull engaging members and keel supports to conform to a variety of boat hull configurations, while maintaining a desired weight distribution proportion between the keel receivers and hull engaging members. The hull engaging members also move about second pivot axes, substantially perpendicular to the fulcrum axes. In a first preferred form, the hull engaging members are elongated bunks mounted to pairs of gimbal mechanisms, a forward pair of which are slotted to permit deflection of the bunks. In another preferred form, hull engaging rollers are mounted at opposed ends of pivoted bars. The bars function as gimbals and are mounted to the cross members for pivotal motion about first pivot axes, spaced adjacent fulcrum axis opposite the keel receiver, and longitudinal second axes to facilitate adjustment and full contact with the boat hull. In another form, hull engaging rollers mount to flexible bunks to receive and deflect responsive to reception of a boat thereon.
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