The driving device of a belt conveyor consists of an electric motor, coupling or hydraulic coupling, reducer, transmission drum, etc. Belt conveyors with inclined sections should also be equipped with brakes or backstops as needed. The function of the driving device is to transmit the gravitational force to the conveyor belt through friction by the transmission drum, causing it to move and transport goods. (Click to view "Specific Applications and Analysis of Advantages and Disadvantages of 9 Drive Devices for Belt Conveyors, Help You Choose the Right One") Most belt conveyors use single drum drive, but as the capacity and distance of transportation continue to increase, the traction force transmitted by the drive drum increases accordingly, resulting in the emergence of double drum and multi drum drive. Each transmission drum can be equipped with one or two drive units, and the end of the transmission drum shaft is connected to the drive unit with a coupling. Electric motors and coupling driven motors generally use Y-series cage type motors, which have the advantages of small size, low cost, reliable operation, and are easy to achieve automatic control. When the power is small (≤ 37kW), it can be directly driven through an elastic coupling; When the power is high (45-315kW), a hydraulic coupling can be used to ensure smooth start-up. In the case of high power (220-800kW), a wound motor can be used, which is easy to regulate and enables the smooth start of long-distance belt conveyors, solving the power balance problem of multi drum drive. In addition to cylindrical gear transmission, modern large-scale belt conveyors often use bevel gear reducers to reduce the lateral size of the conveyor drive device. For mobile belt conveyors, in order to reduce their own weight, the transmission device often adopts belt, chain or first stage open gear transmission. In addition, a cycloidal pinwheel reducer or an electric drum can also be used.
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