Inner clamping crucible tongs for rock sample organic carbon experiment

The utility model belongs to the field of crucible tongs, and particularly relates to internal clamping crucible tongs for rock sample organic carbon experiments, which comprise two transmission rods, a mounting rod, a tong mouth rod, an arc-shaped clamping plate and a mounting mechanism, the mounting rod is rotatably mounted on the outer wall of the transmission rod, the tong mouth rod is fixedly mounted at one end, far away from the transmission rod, of the mounting rod, and the arc-shaped clamping plate is fixedly mounted on the mounting rod. The mounting mechanism comprises a mounting block and two containing cavities, the mounting block is fixedly mounted on the outer wall of the arc-shaped clamping plate, the containing cavities are formed in the inner wall of the mounting block, the outer wall of the clamp jaw rod is in sliding fit with the inner walls of the containing cavities, the number of the containing cavities is two, and the axes of the two containing cavities are perpendicular to each other; t