1, the structure and working principle: put the plot by plot put roller rolls, aluminum side plates, sheets rack, rod, bearing, drive and put the product chain composed by sprocket roller compression spring, transfer torque through friction plate, driving drum rotation. When the work has been blocked by Atropisomers roller, sliding friction plate at achieving product release function. 2, the power from the power roller barrel roller assemblies, aluminum side plates, sheets rack, rod, bearing, drive and chain components. No power roller barrel by non-powered roller assembly, aluminum side plates, sheets rack, trolley, bearing components. Power roller driven by the drive traction chain, chain sprocket drive powered roller bucket on each rotation, so that by rotating the delivery work. No power roller squeeze the workpiece, move freely on the roll by people sliding workpiece or workpiece. 3, roller conveyor is suitable for all kinds of boxes, bags, trays and other pieces of cargo, bulk materials, small items or items to be irregular or working inside on the tray conveyor. Capable of delivering a great piece weight materials, or bear a greater impact load, easy to interface between the filter drum line, drum line and available for many other conveyor or plane consisting of complex logistics transportation system, complete the wide range of technology needs . Accumulating roller can be stacked to achieve delivery of materials. Roller conveyor simple structure, high reliability, ease of use and maintenance. 4, applicable to all types of boxes, bags, trays and other pieces of cargo, bulk materials, small items or items to be irregular or working inside on the tray conveyor. Capable of delivering a great piece weight materials, or to withstand greater impact loads. 5. Structure: can be divided into power by driving drum lines and drum line without power, according to arrangement of conveyor roller can be divided into horizontal lines, inclined conveyor drum line and turning drum line. Also according to customer requirements specially designed to meet the requirements of various customers. Drum width standard gauge line 200,300,400,500,1200mm like. Also can use other special customer needs. Inside turning radius turning drum line standard for 600,900,1200mm etc., customers can also use other special needs. Roller diameter straight section rollers used are 38,50,60,76,89mm like.