Novel power end of three-cylinder tailing filling slurry pump

The utility model belongs to a novel power end of a three-cylinder tailing filling slurry pump in fluid conveying equipment. The novel power end comprises a low-speed crankshaft and a high-speed semi-shaft. A double-helical drive gear is used for transmitting power between the low-speed crankshaft and the high-speed semi-shaft, the high-speed semi-shaft does not penetrate through a rack, one end of the high-speed semi-shaft is installed on one side of the rack through a high-speed bearing, the other end of the high-speed semi-shaft is installed on a supporting rib plate through a high-speed bearing, and the supporting rib plate is fixed into a pump cavity. According to the novel power end of the three-cylinder tailing filling slurry pump, rigidity and stability of the high-speed drive shaft are improved, a long shaft penetrating through the rack is replaced by the semi-shaft, the supporting rib plate is additionally arranged in the pump cavity to fix bearings and other parts of the high-speed drive shaft, the distance between fulcrums of the drive gear is shortened, bearing capacity under the same shaft neck is greatly improved, and meanwhile rigidity and bearing capacity of the whole rack are improved by about 1/3 due to increase of the number of supporting rib plates.