| 摘要 |
A hydraulic platform lift for trucks, having hydraulic and electrical circui try to provide automated, or automated with manual override, platform levelling cap ability in the event the truck is tilted. Three embodiments are claimed where levelling may be accomplished in three separate ways; a first embodiment where levelling is a ccomplished by stopping one side of the platform and allowing the other side to "catch u p", a second embodiment where levelling is accomplished by reversing the direction of mov ement of one side relative to the other to allow rapid levelling, and a third embodim ent where the rate of movement of one side is slowed relative to the other, to allow the o ther side to "catch up" and thereby level the platform.
|
