Plug-in structure of light steel keel profile

The utility model provides an inserting structure of a light steel keel section bar, which comprises a back plate, four corners of the front surface of the back plate are respectively in bolted connection with connecting pipes, and the middle position of the front surface of the back plate is in bolted connection with an inserting seat; a connecting rod is inserted into the connecting pipe; the front surface of the connecting rod is in bolted connection with a fixing plate; a protection groove is formed in the middle of the front surface of the fixing plate. Due to the arrangement of the inserting rod, the protection plate and the jacking rod, after section bars are inserted, the inserting rod is adjusted to be matched with the jacking rod through the protection plate so that the section bars can be fixed, and the problems that the inserted section bars need to be fixed when the section bars are inserted, and the fixing effect of the section bars is poor in an existing scheme are solved. 本实用新型提供一种轻钢龙骨型材的插接结构，