Surfacing weld thickness detection device

The utility model discloses a build-up welding seam thickness detection device, which particularly relates to the field of build-up welding seams, and comprises a base, a connecting plate, a connecting block, a groove, a limiting plate, a limiting block, a spring and a ring sleeve, the connecting block which needs to detect the thickness of a build-up welding seam is movably connected with the top end of the connecting plate, and the two limiting plates are extruded, so that the thickness of the build-up welding seam is detected. The bottom end of the limiting plate is in sliding connection with the top end of the connecting plate, so that a limiting block fixedly connected with the bottom end of the limiting plate is in sliding connection with the inner wall of a groove formed in the top end of the connecting plate, and a spring fixedly connected with one side of the limiting block is made to contract; the outer wall of the motor is in clamping connection with the inner wall of a connecting groove plate embe