RAISING AND LOWERING DEVICE FOR UNLOADING PLATFORM

摘要

PROBLEM TO BE SOLVED: To provide a raising and lowering device for an unloading platform capable of removing a loosening of a wire for horizontally retaining the unloading platform by a simple constitution when the unloading platform is accommodated. SOLUTION: In this raising and lowering device for an unloading platform, a slider 3 is slidably provided along a post 2 vertically provided on both sides at a rear end of a packing box 1 and the unloading platform 4 is slidably supported to a lower end of the slider 3 between an accommodating position where it is accommodated below a floor surface 1a of the packing box 1 and an operation position rearwardly extending from the packing box 1. The unloading platform 4 is horizontally retained to the operation position by a wire rope member 7 connected to a tip end of the platform 4 and an upper end of the slider 3 and in the state that the platform 4 is horizontally retained, it is raisably and lowerably constituted between an uppermost position being approximately the same plane as the floor surface 1a of the packing box 1 and a ground. In this case, one end of a link member 6 having a predetermined length is turnably provided on a tip end of the unloading platform 4 and the other end of the link member 6 is connected to one end of the wire rope member 7.