Bidirectional friction roller has the advantages of simple structure, can timely adjust the heart of conveyor belt, conveyor belt run reliably prevent roller.

Bidirectional friction taper aligning idler suitable for bidirectional operation of belt conveyor, the supporting roller comprises 2 tapered sticks and an ordinary roller and of equal length. Angle tapered stick surface and the horizontal surface is 35 degrees or 45 degrees, the conveyor belt into the groove surface and the general 35 degree or 45 degree groove type supporting roller groove shape like. The lower supporting roller comprises 2 tapered sticks and of equal length, angle tapered stick surface and the horizontal plane is 5 degrees, the conveyor belt into the groove surface and the common V type roller groove shape like. Tapered stick installation is head on, the bulk of the next. The friction between the wheel and the tapered stick links, both through the clamp spring, a positioning sleeve and a sealing ring is arranged in the roller shaft, between the gap of 3mm. In order to prevent the tapered sticks in belt conveyor is arranged on the inclined section due to vibration in the fall, the roller shaft section design board, tapered stick installed after fixed by screws on the upper crossbeam. The upper beam is arranged in the middle of a rotatably supported on the lower beam is connected rotatably supporting consists of rotating shaft, a bearing seat and a bearing, a rotating shaft and between the upper beam steel plate for welded connection, online central bearing seat is provided with a step, a step is provided with a one-way thrust ball bearings, a step is arranged under a single row ball tapered roller bearing, bearings in the rotating belt conveyor below B1400 using circlip on the positioning shaft, belt conveyor B1400 above using the check washer and a round nut to position, bearing side wall is provided with a grease cup, a bearing seat and a lower cross beam are fixed by fasteners. When installing the oil chamber is filled into the 2/3 space of lithium base lubricating oil between the bearing seat and the cover plate installation should be coated with a layer of grease seal, a gap is arranged on a bearing seat of the felt sealing ring and the upper beam of the bracket should be coated with grease seal.