Door opening device of labor-saving heating furnace

The utility model discloses a labor-saving door opener for a heating furnace, and particularly relates to the technical field of heating furnaces, the labor-saving door opener comprises a heating furnace, an opening is formed in the front side of the heating furnace, a door plate is slidably connected in the opening, and driving grooves are fixedly formed in the left side and the right side in the heating furnace; the inner walls of the two driving grooves are fixedly connected with fixing rods, the surfaces of the two fixing rods are slidably sleeved with moving sleeves, and the opposite sides of the two moving sleeves are fixedly connected with connecting rods. The sliding piece drives the mounting sleeve to slide, the sliding of the mounting sleeve drives the moving rod to ascend and descend, the lifting of the moving rod drives the moving sleeve to slide on the surface of the fixed rod, the sliding of the moving sleeve drives the sliding of the connecting rod, and the sliding of the connecting rod drives