Stress-free bidirectional damping screw and bare engine mounting structure

The utility model provides an unstressed two-way damping screw rod and an optical machine installation structure, and belongs to the field of connection structures, the screw rod comprises a shell and a first connection rod, one end of the shell is fixedly provided with a second connection rod, one end of the first connection rod is arranged in the shell, and the first connection rod passes through the shell; a buffer unit is filled between the first connecting rod and the second connecting rod or/and the inner wall of the shell; the mounting structure comprises a mounting foundation and an optical machine structural member, wherein the optical machine structural member is connected with the mounting foundation through an unstressed bidirectional damping screw rod. According to the utility model, the vibration from the mounting base can be effectively buffered, the influence of the vibration on the mounting piece is reduced, the normal operation of the mounting piece is ensured, the vibration influence of the