A hand-operated small crane

Abstract

The utility model relates to a kind of manual small crane, crane includes support and boom assembly, boom assembly is installed on support;Transmission mechanism is set in shell and is connected with chain transmission;Transmission mechanism includes driving shaft and transmission shaft, multiple driving gears are fixed on driving shaft, multiple connecting gears are fixed on transmission shaft, connecting gear and driving gear are set one by one corresponding;Driving shaft can slide along its axial direction, to make multiple driving gears select one and corresponding connecting gear meshing, and the transmission ratio when each driving gear and corresponding connecting gear meshing is different each other.The utility model provides a kind of manual small crane, by changing the relative position of driving shaft and transmission shaft, switch the meshing state between multiple driving gears and multiple connecting gears, and then change the transmission ratio of transmission mechanism, to facilitate flexible adaptation to different working conditions.

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