| 摘要 |
A fall prevention assembly for vertical lift systems for storage and in particular for parking motor vehicles, the lift system comprising a frame extending upward from a base and at least one platform that is raised vertically within that frame responsive to a lift mechanism upon which a vehicle is parked, the fall prevention assembly comprising a series of metal bars of sufficient size and strength to resist bending attached to the base of the unit and extending upward through a series of bushings mounted strategically on each platform usually at the corners. These bushings can be designed with ridges or teeth inside. As long as the platform or platforms remain level and in proper alignment with the lifting system and within the frame the bushings simply move up and down along the metal bars. In the case of the failure of a lifting means the platform or platforms would become unlevel or tilt and the bushings would bind upon the metal bar. The placement of the bushings on the platform as well as the length of the bushings and the closeness of the fit between the metal bar and the bushing would determine the amount the platform would be allowed to tilt.
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