Low-temperature cold superconducting vibration isolation device for space low-temperature refrigerator

The invention discloses a low-temperature cold superconducting vibration isolation device for a space low-temperature refrigerator. An upper cover plate and a lower cover plate are both horizontally arranged and arranged in a vertically spaced mode, a cold superconducting spring comprises a sectional material, the sectional material is vertically and spirally arranged, located between the upper cover plate and the lower cover plate and connected to the upper cover plate and the lower cover plate, a cavity is formed in the sectional material in the length direction of the sectional material, the upper end of the sectional material is a closed end so as to close the upper end of the cavity, the lower end of the cavity is exposed out of the lower end of the sectional material, one end of the connecting pipeline is connected with the lower end of the sectional material and communicated with the lower end of the cavity, the other end of the connecting pipeline is communicated with an expansion container, a liquid filling pipe is arranged on the expansion container, and the expansion container, the connecting pipeline and the cavity are filled with the low-temperature cold conduction working medium. The device can effectively isolate mechanical vibration of the cold head of the low-temperature refrigerating machine, has the advantages of being good in cold conduction effect, light in weight and small in size are achieved, and can effectively solve the problems of cold conduction and mechanical vibration isolation between the cold head of the low-temperature refrigerating machine and a cooled object.