Pavement friction coefficient detection device

The invention discloses a pavement friction coefficient detection device, which consists of a fixed seat, a movable seat, a lifting apparatus and a detector. One end of the movable seat is hinged to the fixed seat, the lifting apparatus is fixedly mounted on the fixed seat, and a power output end of the lifting apparatus is connected to the movable seat to drive the movable seat to swing; the detector is installed on the movable seat; the detector includes a distance sensor, a control chip, a roller and a first motor, the roller is slidably mounted on the movable seat through a connecting seat, the first motor is fixedly installed on the connecting seat, and an output shaft of the first motor is fixedly connected to the roller, and the roller contacts the pavement; and the distance sensor is electrically connected to the control chip to detect the sliding distance of the roller, and transmits the data to the control chip, and the control chip times the movement time of the roller, thus obtaining a pavement fr