Asphalt concrete pavement crack repairing device and repairing method

The invention discloses an asphalt concrete pavement crack repairing device and method, and belongs to the technical field of pavement repairing. The method is used for solving the technical problems of gap blocking defects, easy repeated cracking and time and labor waste caused by whether a roadbed in a gap is fluffy or void interference exists. The device comprises a movable bottom frame, a material buffering groove is formed in the center of the top of the movable bottom frame in a sunken mode, a material control mechanism is sleeved with the material buffering groove, a pressing roller is arranged on the inner wall of the bottom of the material buffering groove, and the material control mechanism comprises a discharging plate and an outer air cylinder; quantitative asphalt filler can be buffered, regulated and controlled according to the capacity needed by gap filling, the situation that the device is blocked due to the fact that redundant asphalt filler is retained in a conveying component is avoided, th