Devices for preventing frost heaving and thawing settlement

A device for preventing frost heaving and thawing settlement, comprising:

• a positioning cylinder, an upper cover, an anti-thawing settlement rod configured to prevent the thawing settlement, and an anti-frost heaving rod configured to prevent the frost heaving, wherein
• the upper cover is sealingly assembled on a top of the positioning cylinder, and the upper cover is provided with a fixing position configured to install a structure;
• a bottom of the positioning cylinder is provided with the anti-frost heaving rod, and an upper portion of the positioning cylinder is provided with the anti-thawing settlement rod;
• the anti-frost heaving rod is provided upwards, a bottom of the anti-frost heaving rod is rotatably provided on a mounting base of the anti-frost heaving rod through a first connecting screw rod, the anti-thawing settlement rod is provided downwards, a top of the anti-thawing settlement rod is rotatably provided on a mounting base of the anti-thawing settlement rod through a second connecting screw rod, and the first connecting screw rod and the second connecting screw rod are provided with a return spring, respectively;
• and
• the anti-thawing settlement rod is connected to a lower portion of the positioning cylinder through a trigger mechanism, the trigger mechanism includes a rotating hook and a trigger rod, the rotating hook is matched with a positioning hook arranged at an end of the anti-thawing settlement rod to position the anti-thawing settlement rod, a bottom of the trigger rod penetrates out of the bottom of the positioning cylinder, the trigger rod is in contact with the rotating hook to drive the rotating hook to rotate when the trigger rod moves upwards, and the positioning hook is separated from the rotating hook when the trigger rod is rotated.