What is a roller chain
Roller chain is a kind of chain used to transmit mechanical power. It is a type of chain drive. It is widely used in household, industrial and agricultural machinery, including conveyors, plotters, printing machines, automobiles, motorcycles, and bicycles. It is linked together by a series of short cylindrical rollers and driven by a gear called a sprocket. It is a simple, reliable and efficient power transmission device.
Roller chains can be made into single-row chains and multiple-row chains. When it is necessary to withstand a large load and transmit a large power, a multi-row chain can be used, as shown in the figure. The multi-row chain is equivalent to several ordinary single-row chains connected with each other with long pins, and its carrying capacity is proportional to the number of rows, but the more rows there are, the more difficult it is to make the force of each row uniform, so the number of rows It should not be too much. Commonly used are double-row chain and three-row chain.
Compared with belt transmission, it has no elastic sliding, can maintain accurate average transmission ratio, and has high transmission efficiency; the chain does not require large tension, so the load on the shaft and bearing is small; it will not slip, the transmission is reliable, and the transmission is overloaded. Strong ability, can work well under low speed and heavy load.
Both the instantaneous chain speed and the instantaneous transmission ratio are variable, the transmission stability is poor, there are shocks and noises in the work, it is not suitable for high-speed occasions, and it is not suitable for situations where the direction of rotation changes frequently.
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