Multi-wheel centralizer

The invention discloses a multi-wheel centralizer which comprises a central shaft rod and a plurality of roller carriers. The roller carriers are distributed around the central shaft rod in an annulararray mode, the roller carriers are independent of one another, a plurality of rollers are arranged on the roller carriers, and springs are arranged between the roller carriers and the central shaftrod; and the upper end and the lower end of each roller carrier are independently hinged to the central shaft rod through rivets, and the multi-wheel centralizer is attached to the inner wall of an oil conveying pipeline better compared with an integral single-wheel centralizer, so that in the multiple roller carriers independent of one another, when one roller carrier gets close to the central shaft rod through a rusted portion of the pipeline, the other roller carriers cannot be influenced, the central shaft rod does not deviate from the axis of the oil pipeline, when the centralizer passesthrough a coupling, due to