V-type return roller is mainly used to support the return section conveyor belt and prevent the conveyor belt running deviation. V型回程托辊组主要用来支撑回程段输送带并防止输送带跑偏。

Garland roller comprises either 3-roller or 5-roller joined together at the ends of their respective shafts by special lugs, to form a continuous 'chain' of roller. On either end of this 'chain', the shafts are connected to an attachment bracket which enables the roller set to be attached to the conveyor stringer structures. 串辊由三节托辊或五节托辊组成，并通过连接片把各个托辊轴的端部连接在一起，形成一个连续的“链条”。

When the position of belt is changed from its center line on the same plane,the self-aligning roller can correct this condition.There are three types of self-aligning idler:blocking roller、friction roller and taper self-aligning roller.They are used both carrier and return section.

When the position of belt is changed from its center line on the same plane,the self-aligning roller can correct this condition.There are three types of self-aligning idler:blocking roller、friction roller and taper self-aligning roller.They are used both carrier and return section.