Transformer connecting pipe welding auxiliary device

The invention discloses a transformer connecting pipe welding auxiliary device and belongs to the field of transformer production. The transformer connecting pipe welding auxiliary device comprises a welding piece, a main bracket, an auxiliary bracket and a connecting assembly, wherein the main bracket and the auxiliary bracket are connected through the connecting assembly to form the whole welding auxiliary device, and the welding auxiliary device clamps the welding piece and then enables the welding piece to be relatively fixed. The welding piece comprises a main pipe and an auxiliary pipe, and the auxiliary pipe is welded to the main pipe. The main bracket comprises a pair of main extension rods, a main connecting rod and a main pressing rod, the main extension rods are located on the two sides of the main connecting rod respectively, the main pipe is located between the main extension rods, the main pressing rod is installed at the front ends of the main extension rods through threads and comprises a thre