Roller and roller conveyer

The invention discloses a roller and a roller conveyer. The roller conveyer is characterized by comprising a plurality of rollers, wherein the rollers include the power rollers and the driven rollers;the power rollers and the driven rollers are each provided with a fixed portion and a rotatable movable portion, wherein two or more belt grooves are formed in one end of the movable portion; and onebelt groove of one power roller is connected with one belt groove of one driven roller adjacent to the power roller through a belt, another belt groove of the driven roller is connected with one beltgroove of next driven roller adjacent to the former driven roller through another belt, and transmission among the power rollers is performed in sequence. The position adjustment or replacement of the power rollers is convenient and fast, partitioned combination of multiple speeds is achieved, and the control mode is diversified. 本发明公开种滚筒和滚筒传送装置，其中滚筒传送装置其特征在于，具有若干滚筒，所述滚筒包括动力滚筒和从滚筒，所述动力滚筒和从滚筒具有固定部和能够旋转的活动部，所述活动部端具有两个或以上的皮带槽