The utility model provides a big pipe diameter pipeline lift conveyor, includes: a Y axle adjustment mechanism and Z axle adjustment mechanism that is used for direct contact and supports the supporting shoe of big pipe diameter pipe, installs below the supporting shoe, wherein, Y axle adjustment mechanism and Z axle adjustment mechanism all install on carrying vehicle bodywork, carry vehicle bodywork 3 to install on X axle walking guided way, carry vehicle bodywork to come drive transport vehicle bodywork to do the removal of X axle along X axle walking guided way through the dolly drive assembly who installs on transport vehicle bodywork, through Y axle, Z axle linear guide's direction, realize removing the regulation to Y axle, the Z axle of supporting shoe to control Y axle, the Z axleprecision of supporting shoe through first, second place sensor detection switch and pressure sensor. The utility model discloses can be voluntarily, fast, accurately the three axial direction of X,Y, Z to big pipe diameter pipe carry, solved axial distance and the centering problem of pipe tip with the groove sword, the quality and the efficiency of groove have been promoted.