发明名称 LIFTING LOADING PLATFORM
摘要 Tailgates for trucks have a loading platform which can be lifted and lowered and pivoted by a lifting mechanism. The lifting mechanism has hydraulic cylinders for lifting and lowering and pivoting the loading platform. The hydraulic cylinders require a hydraulic subassembly and comparatively thick hydraulic lines in order to operate. The invention provides a tailgate in which the loading platform is raised, lowered and pivoted by electric linear drives (20). The linear drives (20) are provided in a particular manner with a plurality of rod-like electric motors (25) which together drive a gearwheel (32). The gearwheel (32) can rotate a spindle nut (24) on a threaded spindle (23). The threaded spindle (23) can thus be displaced axially like piston rods of hydraulic cylinders. As a result of the electrically operating linear drives (20), the tailgate according to the invention does not need any hydraulic subassembly or any hydraulic hoses.
申请公布号 US2011280699(A1) 申请公布日期 2011.11.17
申请号 US200913063777 申请日期 2009.09.08
申请人 ZIMMERMANN MARTIN;HARTEL THOMAS 发明人 ZIMMERMANN MARTIN;HARTEL THOMAS
分类号 B60P1/44 主分类号 B60P1/44
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