Detection device for quickly checking surface finishing effect of shield segment outer cambered surface concrete

The utility model discloses a detection device for quickly checking the concrete surface finishing effect of the outer cambered surface of a shield segment, which comprises a first fixed support, an arc-shaped rack higher than the outer cambered surface of the shield segment is fixedly arranged on the first fixed support, a sliding trolley is meshed and slides on the arc-shaped rack, and a frame is arranged on the sliding trolley. A plurality of laser radars are fixedly arranged at the front end of the bottom face of the vehicle frame, a vehicle-mounted computer is arranged above the vehicle frame, laser sighting devices are installed on the side faces of the plurality of laser radars, the plurality of laser radars and the laser sighting devices are connected with the vehicle-mounted computer through a USB, and a data processing system is installed in the vehicle-mounted computer. The data processing system comprises an acquisition module for acquiring an actual distance value between each laser radar and the