Sampling device for testing durability of concrete bridge

The utility model relates to the technical field of concrete detection, and discloses a sampling device for testing the durability of a concrete bridge, which comprises a main body mechanism and a sampling mechanism, the main body mechanism comprises a main plate, a connecting column, a sliding rail, a bottom plate, a limiting plate and a toothed plate, the sampling mechanism comprises a movable plate, a motor, a sampling column, a supporting rod, a linear bearing, a spring, a chain, a handle and a gear. According to the sampling device for testing the durability of the concrete bridge, the device is placed above the concrete bridge, a motor rotates to drive a sampling column to rotate, a rotating handle drives a chain to rotate, and a supporting rod connected with the front end of the chain can move up and down to drive a movable plate and two groups of sliding rails to vertically move downwards; then the saw-tooth shape at the bottom of the sampling column moving downwards is driven to cut a concrete bridge