| 摘要 |
A method for erecting a platform is presented. The method includes providing a selectively liftable platform mechanism wherein the platform mechanism generally includes a platform, a trailer, at least one support bar, and a ladder. The at least one support bar and the ladder provide structural support for the platform when the platform is raised above the trailer. The at least one support bar has a proximal end pivotally connected to a first end of the trailer, and a distal end pivotally connected to the platform. The ladder has a distal end pivotally connected to the platform, and a proximal end pivotally and slidably connected to the trailer. The proximal end of the ladder is movable along a longitudinal axis of the trailer in order to level the platform in its raised position. The platform mechanism also includes a cable operatively connected to the platform. The method includes turning a winch in order to apply tension to the cable; further turning the winch so as to raise the support bar to an angle of approximately 45° relative to the trailer, and thereby elevating the platform; and still further turning the winch so as to raise the support bar and the ladder to an angle greater than 45° relative to the trailer and producing a tilt to the elevated platform. The method then includes sliding the proximal end of the ladder along the trailer so as to level the platform into a horizontal orientation in its raised position.
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