Positioning device for X-ray fluorescence spectrometer

The utility model discloses a positioning device for an X-ray fluorescence spectrometer, which belongs to the technical field of spectrometers, and comprises a detector body, the left side and the right side of the detector body are fixedly connected with support frames, the bottoms of the two support frames are fixedly connected with a workbench, the top of the workbench is fixedly connected with a lifting assembly, and the lifting assembly is fixedly connected with the detector body. A U-shaped plate is hinged to the top of the lifting assembly, and the left side and the right side of the U-shaped plate are slidably connected with the two supporting frames correspondingly. The electric push rod can drive the rack to move left and right, the rack is meshed with the gear so as to drive the gear to rotate, the two connecting rods are hinged to the top of the gear, the sides, away from the gear, of the two connecting rods can be close to each other, and the pull rods are hinged to the sides, away from the gear,