Anti-shaft-sticking mechanism for concrete mixing

The invention provides an anti-shaft-sticking mechanism for concrete mixing, which is used for solving the technical problems in the prior art that an operator generally cannot effectively clean the root of a mixing shaft, so that concrete is easy to remain between the root of the mixing shaft and a machine body, and the mixing shaft is stuck. The anti-shaft-sticking mechanism comprises two opposite semicircular plates and two cleaning boxes in one-to-one correspondence with the semicircular plates, each semicircular plate is provided with a first arc-shaped groove and a second arc-shaped groove which are provided with downward openings and share the same circle center, and racks are fixedly arranged on the inner walls of one sides of the first arc-shaped groove and the second arc-shaped groove in the trend of the first arc-shaped groove and the second arc-shaped groove; transmission motors are fixedly arranged at the top ends of the two cleaning boxes, the output ends of the two transmission motors are in po