| 摘要 |
<p>A tilting hoist (20) for elevating a motor vehicle (32) to provide access to the vehicle's undercarriage, using the vehicle's weight as the total source of energy. A pair of side-by-side ramp tracks (22) having a tapered ramp approach (36) provide a gradual slope for vehicle entry onto the tracks. The tracks are connected together and form a rectangular platform having an adjustable width between the tracks congruent with. the vehicle wheels footprints. A front fulcrum (56) and a rear fulcrum (74) are pivotally attached to each ramp, thus providing a pivot point when the vehicle is driven on the ramp and the vehicle's center of gravity either forward or rearward of the appropriate fulcrum that has been adjusted into a rigid position. Movement of the vehicle on the tracks causes the platform to pivot on the fulcrum selected in the rigid fulcrum position. Subsequent vehicle movement forward and backward elevates the hoist in stepped increments when the pivot points are sequentially reversed.</p> |
