Internal corner mounting structure of wallboard in plant

The utility model relates to the field of tool clamps, in particular to an internal corner mounting structure of a wallboard in a plant. Comprising a bottom plate, a connecting rod is fixedly connected to the upper end of the bottom plate, an L-shaped fixing plate is fixedly connected to the connecting rod, a pressing structure is arranged on the L-shaped fixing plate, a wall body is attached to the outer side of the L-shaped fixing plate, an internal corner profile is arranged between the wall body and the bottom plate, the internal corner profile is attached to the wall body, and a limiting structure is arranged between the bottom plate and the internal corner profile. When internal corner sectional materials are installed at the internal corner, the internal corner sectional materials are placed between the push plate and the wall body, the push plate is made to move towards the internal corner sectional materials through rotation of the handle, a sliding channel is formed, the internal corner sectional ma