What are the ways in which the roller food grading machine drives the roller?
Most food classifiers use drum type. What are the driving modes of drum type food classifiers? Let's take a look at it in detail: The currently widely used transmission method for driving the drum is friction wheel transmission. The friction wheel is mounted on a long shaft, and there are friction wheels on both sides of the drum, and they are symmetrical with each other, and the included angle is 90°. One end of the long shaft has a transmission system, and the other end is equipped with a friction wheel. After the driving shaft gets power from the transmission system, it drives the friction wheel to drive. The friction wheel is close to the rolling ring, and the rolling ring is fixed on the drum. Therefore, the friction force generated between the friction wheel and the rolling ring drives the drum to rotate. There are three ways to drive the roller to drive: the first one-gear drive. The electric motor is driven by a belt pulley, a gearbox, a sprocket, and a pair of gears. One of the large gears is connected to the edge of the drum discharge port, and the other small gear is connected to the transmission system as a driving gear to transmit power to The big gear drives the drum to rotate. This kind of transmission method is more troublesome in processing and manufacturing. Due to the large diameter of the drum, the rotation is not stable, and the lubricating oil on the gears often drips into the contaminants in the drum, so it has been gradually eliminated. The second type-intermediate shaft transmission. There is a drive shaft on the center line of the roller, which is connected with the roller by a support arm. The drive system transmits the power to the central shaft, and the central shaft drives the roller to rotate. This transmission method is simpler than the first one, but because the drum is longer, its central axis is also long, and it is difficult to install an intermediate bearing in the middle of the drum. Therefore, if the rigidity of the central axis is slightly poor, it will often produce deflection and cause the drum The operation is not stable. At the same time, because the material sometimes collides with the central axis and the support arm to cause mechanical damage, the current use of this form is gradually decreasing. The third type-friction wheel drive. The friction wheel 4 is mounted on a long shaft, and there are friction wheels on both sides of the drum, and they are symmetrical with each other, and the included angle is 90°. One end of the long shaft (active shaft) is connected with the transmission system, and the other end is equipped with a supporting wheel, which is not connected with the transmission system. After the driving shaft gets power from the transmission system, it drives the friction wheel on it to rotate. The friction wheel is close to the rolling ring 3, and the rolling ring 3 is fixed on the drum. Therefore, the friction generated between the friction wheel and the rolling ring drives the roller to rotate. . This kind of transmission is simple and reliable, and it runs smoothly. It is more and more widely used. Among them, the friction wheel transmission is more and more used because of its good transmission effect, simple and powerful, and not easy to malfunction, and gradually replace the above two transmission methods.