Non-contact reinforced concrete detection device

The utility model belongs to the technical field of reinforced concrete detection, and relates to a non-contact reinforced concrete detection device which comprises a host and a non-contact sensor, the non-contact sensor is arranged at the rear end of the host, a containing box is fixed at the upper end of the host, a penetrating opening is formed in any side of the exterior of the containing box, and a wire wheel is arranged in the containing box. A data line extending out of the penetrating opening is wound around the inner wall of the line wheel. The data line is wound on the inner wall of the line wheel in a bidirectional folding mode, the head end and the tail end of the data line extend out of the containing box from the penetrating opening at the same time, the hand crank is rotated to drive the line wheel to rotate so that the data line can be wound, and the data line can be automatically wound into the line wheel through the torsion spring by loosening the hand crank or the data line. According to th