Tension-adjustable follow-up rigid belt tensioning device

The utility model belongs to the technical field of belt tensioning, and particularly relates to a tension-adjustable follow-up rigid belt tensioning device which comprises a tensioning frame body, a fixed pin shaft, a first-stage V-shaped belt and a gap bridge belt wheel, a first bearing is installed at one end of the tensioning frame body, the fixed pin shaft is installed in an inner hole of the first bearing, the threaded end of the fixed pin shaft is installed in a hole of a rack, and the first-stage V-shaped belt is connected with the gap bridge belt wheel. And the tensioning frame body can rotate around the fixed pin shaft, so that follow-up rigid tensioning is realized. By means of the rotating connection mode, low-resistance follow-up transmission is achieved, reciprocating motion positioning errors caused by unbalanced additional external force are avoided, the tensioning frame is rigidly arranged, the characteristics that the transmission process is stable and the tension is adjustable are guarantee