Safety protection device for welding pipeline in groove

The utility model belongs to the technical field of municipal construction, and particularly relates to a safety protection device for pipeline welding in a groove, which comprises two vertical protective plates, connecting plates are arranged on two sides of the vertical protective plates, rhombic frames are connected between the connecting plates, and the front rhombic frame and the rear rhombic frame are connected together through a plurality of horizontal long screws. A fixing ring is arranged at the top ends of the two vertical protection plates, a pull rope is fixed to the fixing ring, the pull rope and a hoisting ring are fixed together, and the hoisting ring and a hoisting rope on a crane are fixed together. The vertical protection plates of the safety protection device can block collapsed soil in the first time, precious escape time is won for workers, the telescopic rhombic frame enables the device to be suitable for grooves with different widths and high in universality, meanwhile, the rhombic fram