Introduction to belt conveyor pulley

2019-09-25

Introduction to belt conveyor pulley




The pulley is divided into a driving pulley set and a reversing pulley set.

The drive pulley is the main component that transmits power. The drive pulley has a diameter of 500, 630, 800, 1000, 1200, 1400 mm according to the bearing capacity. The same pulley diameter has several different shaft diameters and center spans for designers to choose from.

(1)    Light pulley: bearing diameter 50~100mm. The single-plate welded cylinder structure with the shaft and the hub is a single key connection. One-way output.

(2)    Medium-sized pulley: bearing diameter 120~180mm. The shaft and the hub are connected by a sleeve.

(3)    Heavy duty pulley: bearing bore diameter 200~350mm. The shaft and the hub are connected by an expansion sleeve, and the cylinder is a cast welded structure. There are two types: one-way output shaft and two-way output shaft.

The surface of the drive pulley has a bare steel surface, a herringbone and a diamond-shaped rubber cover. Bare steel drums can be used for low power, small bandwidth and dry environment. The chevron pattern has a large friction coefficient, good slip resistance and drainage, but is directional. Diamond-shaped rubber surface for conveyors that run in both directions. For pulley used in important occasions, it is best to use a vulcanized rubber cover.

The reversing pulley is used to change the running direction of the conveyor belt or increase the wrapping angle between the conveyor belt and the driving pulley.

(1)     The reversing pulley is also divided into light, medium and heavy according to the bearing capacity. The diameters of the sub-division are 50~100mm, 120~180mm and 200~260mm respectively. The structure type is consistent with the driving pulley.

(2)     The redirecting pulley is used to change the running direction of the conveyor belt. When used for 180° redirection, it is usually placed at the tail or vertical tensioning device. The 90° redirect is placed above the vertical tensioning device. Face-lifting rollers are generally used for occasions less than or equal to 45°

(3)     There are two types of reversing roller cover: bare steel surface and smooth rubber surface.


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