Shaft coupling hand coupler

The utility model relates to the technical field of hoisting machinery parts, in particular to a coupling hand coupler which comprises a first outer ring, steel balls, a blocking cover, inner rings, connecting blocks, hexagonal flange face bolts and a second outer ring, the first outer ring and the second outer ring are oppositely arranged, and the inner rings are connected to the inner sides of the first outer ring and the second outer ring in a sleeved mode. A connecting block is connected between the two inner rings in a sleeved mode, the steel balls are arranged in grooves formed by connecting the first outer ring or the second outer ring and the inner rings in a sleeved mode, the upper surface of the first outer ring or the second outer ring is fixedly connected with a blocking cover through hexagonal flange face bolts, keys are arranged on one sides of the two inner rings respectively, and the number of the steel balls is 32. The number of the hexagonal flange face bolts is 16. By arranging the hexagona