Track crack detection device

The invention discloses a track crack detection device which comprises a base, four supporting columns are symmetrically and fixedly connected to the lower side wall of the base, a pulley is installed at the lower end of each supporting column, a shell is installed on the upper side wall of the base, and rotating shafts extending into the shell are symmetrically and rotationally connected to the lower side wall of the base. A driving mechanism is arranged in the shell, mounting plates are fixedly connected to the lower ends of the two rotating shafts, and mounting holes are formed in the lower side walls of the two mounting plates. Through movement of the clamping rods, mounting and dismounting of the cleaning roller are more convenient, so that the mounting and dismounting efficiency of the cleaning roller is improved, the double-head motor drives the cleaning roller to rotate, and the cleaning roller rotates to make contact with the inner side wall of the rail, so that dust on the inner ...