Full-automatic low-temperature instrument with fixing device

The invention relates to the technical field of low-temperature instruments, in particular to a full-automatic low-temperature instrument with a fixing device, which comprises a shell, a sample grid, a lifting mechanism and a fixing mechanism, and a low-temperature box is fixedly connected to the inner side wall of the top end of the shell; A sealing mechanism is arranged in the low-temperature box; the sample grid is fixedly connected to the top end of the lifting mechanism; the fixing mechanism is mounted in the sample grid; the lifting mechanism is installed in the shell and comprises an electric push rod, a straight rod and a hinge rod; the electric push rod is fixedly connected to the inner side wall of the bottom end of the shell; the straight rod is fixedly connected to the outer side wall of the electric push rod; one end of the hinge rod is hinged with the straight rod, and the other end is hinged with the sealing mechanism; and samples in the sample grid are kept orderly through the fixing mechanism