Road and bridge concrete structure detection device

The invention discloses a road and bridge concrete structure detection device. The device comprises a main body box, a controller and an adjusting device, wherein a fixed frame is arranged on the mainbody box; a sliding block is arranged on a limiting guide column in a sliding mode and attached to the fixed frame; a spring sleeves the limiting guide column and abuts against the fixed frame and the sliding block; a third rotating shaft is rotationally arranged on the sliding block, and a detection roller is arranged on the third rotating shaft; a first laser lamp and a second laser lamp are arranged on a laser lamp fixing plate, and the first laser lamp is located above the second laser lamp; a first laser receiver and a second laser receiver are arranged on the main body box; a fixed plate is arranged on the main body box; a sliding rod is slidably arranged on the fixed plate and extends into the main body box to face the detection roller; and a movable part is arranged on the slidingrod and clings to the det