Shell and skin welding structure

The utility model belongs to the technical field of shell and skin welding, and particularly relates to a shell and skin welding structure. Comprising a skin (1) and a shell (2), a round opening is formed in the skin (1), a butt joint opening is formed in the shell (2), the round opening of the skin (1) and the butt joint opening of the shell (2) are welded after being in lap joint, the angle of a welding groove is an obtuse angle, the shell (2) is made of cast aluminum alloy, the skin (1) is made of wrought aluminum alloy, four to eight welding joints are symmetrically positioned and welded, other welding joints are evenly distributed, and the distance between the other welding joints is about 30-40 mm. The welding performance is improved, and the welding quality is improved. 本实用新型属于壳体和蒙皮焊接技术领域，具体涉及壳体和蒙皮焊接结构。包括：蒙皮(1)和壳体(2)，蒙皮(1)上设置有圆形开口，壳体(2)上设置有对接口，其中蒙皮(1)的圆形开口与壳体(2)的对接口搭接后焊接，所述焊接坡口角度为钝角，壳体(2)为铸造铝合金，蒙皮(1)为变形铝合金，焊缝对称定位焊4至8点，其余焊点均布，间距约30-40mm。改善了焊接性能，提高了焊接质量。