Clamping positioning structure of acra of radiobiological experiment

The utility model discloses a clamping positioning structure of acra of a radiobiological experiment. The clamping positioning structure comprises a positioning clamping groove, a positioning spring, wedge-shaped positioning clamping teeth, a positioning guide rail and a positioning contracting clamping structure, wherein the positioning contracting clamping structure comprises a left crescent clamp, a right crescent clamp, two crescent clamping shafts, a contracting clamping groove, a contracting clamping base, a contracting clamping spring, a contracting clamping main handle, two clamping handle shafts, a positioning base, a clamping handle spring, a positioning clamping handle and a contracting clamping external sleeve; a clamping body for pressing and collecting and clamping teeth for resisting and positioning are utilized to respectively reach the functions of clamping and positioning. With the adoption of the clamping positioning structure of the acra of the radiobiological experiment, an irradiated part can be positioned and fixed, and therefore, all early-stage preparation works can be performed in a sterile chamber. The clamping positioning structure of the acra of the radiobiological experiment is reasonable in design, convenient and safe to operate, environmentally friendly, obvious in fixing effect, and high in practicability and generality; the clamping positioning structure is an efficient fitting of a fixing device for an animal irradiation experiment.