Mountain land type internal welding machine

The invention relates to a mountain type internal welding machine, and belongs to the technical field of oil and gas pipeline welding. The internal welding machine comprises a welding part, a guide part, a first machine body part, a first connecting part, a second machine body part, a second connecting part, a gas storage part, a controller and a plurality of electric control valves. The first connecting part comprises a first fixing plate, a second fixing plate and a plurality of first elastic pieces, and the second connecting part comprises a third fixing plate, a fourth fixing plate and a plurality of second elastic pieces. By the adoption of the internal welding machine, the internal welding machine can normally advance in the bent pipe. 本申请是关于一种山地型内焊机，属于油气管道焊接技术领域。所述内焊机包括焊接部、导向部、第一机身部、第一连接部、第二机身部、第二连接部、储气部、控制器和多个电控阀；第一连接部包括第一固定板、第二固定板和多个第一弹性件，第二连接部包括第三固定板、第四固定板和多个第二弹性件。采用本申请，内焊机可以在弯管中正常行进。