The roller conveyor line of the curve machine is an important kind of conveyor line. The ancient Chinese high drum car and the water-lifting dump car are the prototypes of modern bucket elevators and scraper conveyors; in the 17th century, overhead applications began to be used. The ropeway transports bulk materials; in the mid-19th century, conveyors of various modern structures appeared one after another.

In 1868, belt conveyors appeared in England; in 1887, screw conveyors appeared in the United States; in 1905, steel belt conveyors appeared in Switzerland; in 1906, inertial conveyors appeared in Britain and Germany. Since then, the conveyor has been continuously improved by the technological advancement of machinery manufacturing, electrical machinery, chemical and metallurgical industries, and has gradually developed from completing the transportation within the workshop to completing the material handling within the enterprise, between enterprises and even between cities, becoming materials An indispensable part of the mechanization and automation of the handling system.

Structure: According to the driving mode, it can be divided into power roller line and unpowered roller line. According to the layout, it can be divided into horizontal conveyor roller line, inclined conveyor roller line and turning roller line. It can also be specially designed according to customer requirements to meet the requirements of various customers. The inner width of the standard gauge roller line is 200, 300, 400, 500, 1200mm, etc. Other special specifications can also be adopted according to customer requirements. The standard turning radius of the turning drum line is 600, 900, 1200mm, etc. Other special specifications can also be adopted according to customer requirements. The diameters of the straight rollers are 38, 50, 60, 76, 89mm and so on.