Belt tail pulley tensioning device

The utility model discloses a belt tail pulley tensioning device, and belongs to the field of mine and cement transportation equipment. In the prior art, a belt tail wheel adjusting mode is time-consuming and labor-consuming; complex structure problem, the utility model provides a belt tail pulley tensioning device. The device comprises a tail wheel support connected with the two ends of a tail wheel, the tail wheel support is arranged on a fixing frame, a lead screw is connected with the tail wheel support through a lead screw nut, the lead screw is parallel to the running direction of a belt, grooves are formed in the two sides of the bottom of the tail wheel support, and rolling assemblies are connected with the tail wheel support through the grooves. A groove is formed in the bottom ofa tail wheel support; the groove is connected with the rolling assembly to achieve rolling operation of the tail wheel support when the lead screw is adjusted, the previous sliding operation mode ischanged, friction resistan