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公开(公告)号：US20140124293A1
公开(公告)日：2014-05-08
申请号：US14150694
申请日：2014-01-08
CPC分类号： B66B11/0461 , B66B9/022 , B66B9/0815 , B66F3/02 , E06C7/08 , E06C7/12 , E06C7/16
摘要： A lift system comprising an elongated rack and a roller pinion drive system. A preferred version has two parallel rack with plurality of rungs extending horizontally between the racks to form a ladder. A plurality of spaced apart mounting brackets are configured for affixing the ladder vertically to a stationary member, the stationary member not forming part of the invention. In this version, a drive unit retained within a carriage is mounted in proximity to the racks. The drive unit interacts with the racks to move the carriage upwardly and downwardly along the racks. A speed limiter is also disclosed that can be retained within the carriage below the drive unit and mounted in proximity to one of the racks. The speed limiter interacts with the rack to produce a breaking action if the drive unit fails, preventing the carriage to drop down quickly. Single rack and inclined rack versions are disclosed as alternatives.
摘要翻译： 一种电梯系统，包括细长齿条和滚轮小齿轮驱动系统。 优选的版本具有两个平行的架，其中多个梯级在机架之间水平延伸以形成梯子。 多个间隔开的安装支架被构造用于将梯子垂直地固定到静止构件，固定构件不构成本发明的一部分。 在该版本中，保持在托架内的驱动单元安装在机架附近。 驱动单元与机架相互作用，沿着机架向上和向下移动滑架。 还公开了一种速度限制器，其可以被保持在驱动单元下方的托架内并安装在其中一个机架附近。 如果驱动单元出现故障，速度限制器与机架相互作用产生断开动作，防止滑架快速下降。 公开了单机架和倾斜机架的替代方案。
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公开(公告)号：US10017359B2
公开(公告)日：2018-07-10
申请号：US14150694
申请日：2014-01-08
CPC分类号： B66B11/0461 , B66B9/022 , B66B9/0815 , B66F3/02 , E06C7/08 , E06C7/12 , E06C7/16
摘要： A lift system comprising an elongated rack and a roller pinion drive system. A preferred version has two parallel rack with plurality of rungs extending horizontally between the racks to form a ladder. A plurality of spaced apart mounting brackets are configured for affixing the ladder vertically to a stationary member, the stationary member not forming part of the invention. In this version, a drive unit retained within a carriage is mounted in proximity to the racks. The drive unit interacts with the racks to move the carriage upwardly and downwardly along the racks. A speed limiter is also disclosed that can be retained within the carriage below the drive unit and mounted in proximity to one of the racks. The speed limiter interacts with the rack to produce a breaking action if the drive unit fails, preventing the carriage to drop down quickly. Single rack and inclined rack versions are disclosed as alternatives.
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