Sample rod insertion teaching device for transmission electron microscope

The invention discloses a sample rod insertion teaching device for a transmission electron microscope, and the device comprises a sample rod and a sample cabin seat, the interior of the sample cabin seat is detachably provided with a tube seat, the tube seat is provided with a movable ring in a sliding manner, the tube seat is sleeved with an elastic part, and the elastic part is rotatably connected with the movable ring; the tube seat is provided with a guide slot, and the sample rod is provided with a guide bulge which is used for sliding and limiting the guide slot; the tube seat is also provided with a test through groove which is communicated with the guide slot. The detachable tube seat is arranged in the sample bin seat, and the spring and the movable ring are arranged in the tube seat, so that the sample rod can be inserted into the tube seat through the guide slot by virtue of the rotating groove, the inserting groove and the locking groove on the tube seat, and the sample rod can rotate and linearly