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The classification of chains in accordance with their use

2017-06-26
        In accordance with different uses, the chain can be divided into lifting chain, traction chain and transmission chain of three categories. The lifting chain is mainly used for lifting machinery to lift its speed, V is less than or equal to 0.25m/s; the traction chain is mainly used for moving the heavy chain conveyor, the working speed of V is less than or equal to 4m/s; the transmission chain for transferring power and motion in general machinery, usually working speed of V is less than or equal to 15m/s.
        There are two kinds of transmission chain, toothed chain and roller chain. The tooth chain is realized by meshing the chain plate and sprocket with a special tooth shape. The tooth chain is stable and the noise is very small, so it is also called silent chain drive. The tooth chain allows the speed of work up to 40m/s, but the manufacturing cost is high and the weight is large, so it is used in occasions with high speed or high motion precision.
        There are two kinds of chains used in power transmission, they are sleeve, roller chain and tooth chain. The sleeve roller chain is composed of an inner chain plate, an outer chain plate, a sleeve, a pin shaft and a roller. The outer chain plate is fixed on the pin shaft, the inner chain plate is fixed on the sleeve, the roller and the sleeve sleeve and the sleeve sleeve and the pin shaft can rotate relatively, so that the meshing of the chain and the chain wheel is mainly rolling friction. The sleeve roller chain can be used individually and in multiple columns, and can be used in a plurality of columns to transmit greater power. The sleeve roller chain is lighter in weight, longer in life and lower in cost than the toothed chain. It is widely used in power transmission.
        The toothed chain is assembled with a plurality of chains having a face of 60 DEG with a pin shaft. The face of the chain piece engages with the sprocket. The chain is provided with an inner guide piece or an outer guide piece in order to prevent the chain from falling off the chain wheel when working. When engaged, the guide plate is fitted with the corresponding guide groove on the sprocket (Fig. 1). The tooth chain is stable and the noise is very small, so it is also called silent chain. It is often used in high speed transmission. The teeth of the sleeve roller chain and the toothed chain sprocket shall ensure the chain energy saving, free entry or exit engagement, and the impact is small when engaging, and the contact is good when engaged.
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