Tunnel geological radar nondestructive testing device

The utility model discloses a tunnel geological radar nondestructive testing device which comprises a supporting frame installed on a tramcar body, a telescopic rod installed on the supporting frame, an installation plate connected to the extending end of the telescopic rod and a tunnel geological radar nondestructive testing instrument installed on the installation plate. The supporting frame comprises a base, two vertical plates vertically installed on the base and a rotating shaft rotationally installed on the two vertical plates, the rotating shaft is fixedly sleeved with the fixed end of the telescopic rod, the extending end of the telescopic rod is connected with the installation plate through a universal ball joint, two limiting blocks are arranged on the inner side face of each vertical plate, and the rotating shaft is driven by a servo motor. According to the tunnel lining continuous monitoring device, in the process that the tramcar body moves along the guide rail, the tunnel lining can be continuou