Tensioning roller structure of conveying belt

The utility model relates to the technical field of conveying belts, and provides a roller structure for tensioning a conveying belt, which is convenient for adjusting the conveying length of the conveying belt and comprises a belt and two support frames, two pinch rollers are rotatably connected between the two support frames, electric telescopic rods are mounted at the bottom ends of the support frames, and the two pinch rollers are connected with the electric telescopic rods. Lifting frames are connected to the output ends of the bottoms of the electric telescopic rods, a driving roller and two tensioning wheels are rotationally connected between the two lifting frames, first motors are installed on the corresponding lifting frames, the output ends of the first motors are fixedly connected with the driving roller, and two moving frames are slidably connected to the top end of the supporting frame; an adjusting roller is rotationally connected between the two corresponding moving frames, an adjusting mechan