Cycloidal speed reducer with detachable heat dissipation device

The utility model relates to a cycloid speed reducer with a detachable heat dissipation device, which comprises a casing, a placing piece, a plurality of heat dissipation pieces and a plurality of heat dissipation pieces, and is characterized in that the placing piece is cuboid-shaped; the number of the sliding grooves is two; the two sliding grooves are arranged in parallel and arranged at the top end of the side wall of the machine shell and extend towards the bottom end of the machine shell. The number of the sliding protruding blocks is two, and the two sliding protruding blocks are arranged on the edges of the two side walls of the end, facing the machine shell, of the containing piece. The containing groove is formed in the side, facing the machine shell, of the placing piece; the fan is embedded in the end, away from the machine shell, of the placing piece; the heat dissipation channel comprises an air inlet and an air outlet which are formed in the two sides of the machine shell; wherein the sliding p