| 摘要 |
PURPOSE: A movable hoist is provided to make a worker freely lift up and down a lifting plate, to offer convenience by making a hoist movable, and to reduce the working hours by reducing the weight and size of the hoist. CONSTITUTION: A movable hoist comprises a lower frame(1) installed via a connecting piece(13) having an auxiliary leg(15) with a rubber plate(16), pillar frames(5,6) having planar gears(7,8), a cross bar(9), and of which lower portions are fixed with the connecting piece of the lower frame, a lifting plate(2) internally contacting with the pillar frames and having a pair of extension frames(21,22) with rollers, a drive unit(3) elastically supported on springs, having a drive gear box installed in a gear box, and of which one side is fixed with the extension frames, a speed reducing unit fixed on a rotating shaft of the drive gear box and an input shaft and having an output shaft withdrawn to both sides, and a chain including a chain gear installed in front of the planar gears, another chain gear fixed with the extension frames, and a fixing protrusion fixed with the planar gears.
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