The present invention discloses an automatic
assembly line for guide rails of construction machinery, including a conveying
system, wherein the conveying
system is horizontally provided with a loading section conveyor, a guide rail rack
assembly section conveyor, a guide rail rack end
face detection section conveyor, a guide rail standard section splicing section conveyor and a standard section output section conveyor in sequence from one end to the other end, rack
assembly stations are provided on both sides of the guide rail rack assembly section conveyor, a side line for rejecting unqualified products is provided on one side of the rack end
face detection section conveyor, standard section splicing stations are provided on both sides of the guide rail standard section splicing section conveyor, a finished product side shifting mechanism is provided on one side of the standard section output section conveyor, and a stacking truss
manipulator is provided on the upper end of the finished product side shifting mechanism. The advantages of the present invention compared with the prior art are: it realizes loading, positioning, pre-tightening, debugging, online detection, automatic unloading, meets the consistency of quality, and reduces the intensity of manual labor.