Speed measuring device of electronic belt scale

A speed measuring device of an electronic belt scale belongs to the technical field of detection devices and is used for measuring speed of the electronic belt scale in operation process of the electronic belt scale. The technical scheme is that the speed measuring device comprises an electronic proximity switch and a rotating vane, wherein the electronic proximity switch is arranged on a tail housing of a belt scale driving motor, the rotating vane comprises a plurality of integrated blades, the blades are uniformly distributed on a circumference plane vertical to a motor shaft, a central shaft sleeve of the circumference plane is arranged on the motor shaft, and the top of each blade is provided with an induction sheet parallel with the motor shaft, and the induction sheets are corresponding to positions vertical to an induction head of the electronic proximity switch. The speed measuring device guarantees timeliness and accuracy of speed measurement. The electronic proximity switch is arranged at the tail