Belt drive tensioning device

The utility model relates to the technical field of belt transmission, in particular to a belt transmission tensioning device which comprises a U-shaped tensioning seat, and a tensioning wheel is rotatably mounted at a notch of the tensioning seat. Two groups of traction pieces for simultaneously pulling the tensioning seat are separately arranged at the groove bottom of the tensioning seat along the axial direction of the tensioning wheel; according to the tensioning device, stress deformation of the tensioning seat can be effectively avoided, so that the running problem of the tensioning wheel is solved, and power transmission is normally carried out. 本实用新型涉及带传动技术领域，具体是一种带传动张紧装置，包括U型的张紧座，张紧轮回转安装在张紧座的槽口处；张紧座的槽底处沿张紧轮的轴向相离布置有两组同时对张紧座起牵拉作用的牵拉件；本实用新型能够有效的避免张紧座出现应力变形，从而保证张紧轮运行问题，动力传输正常进行。