Photoelectric tube welding and fixing tool

The utility model provides a photoelectric tube welding fixing tool. The photoelectric tube welding fixing tool comprises a balance weight base and a fixing clamp, the fixing clamp comprises two clamping arms, a pin shaft and a torsion spring, the two clamping arms are hinged through the pin shaft, a clamping opening used for clamping a photoelectric tube is formed in one ends of the two hinged clamping arms, a driving end used for driving the clamping opening to be opened and closed is formed in the other ends of the two hinged clamping arms, and the torsion spring is arranged on the balance weight base. The torsion spring is arranged on the pin shaft in a sleeving mode, and the side, close to the driving end, of the torsion spring abuts against the inner wall faces of the two clamping arms. At least one fixing screw hole is formed in the balance weight base, one clamping arm of the fixing clamp is fixed on the fixing screw hole through a fastener, and the clamping opening faces the outer wall of the balance