The sprocket of the excavator is composed of a driving sprocket, a driven sprocket, a chain, and a frame. Its working principle is to transmit movement and power by the meshing of the sprocket teeth and the chain links, and the meshing transmission of the intermediate flexible parts.
Its characteristic is that the chain drive has no elastic sliding and slippage, and can maintain an accurate average transmission ratio. Compared with the belt drive, its efficiency is higher.
The required tension is small, and the radial pressure acting on the shaft is small, which can reduce the friction loss of the bearing.
can work in harsh environments such as high temperature and oil pollution.
The manufacturing and installation accuracy is low, and the transmission structure is simple when the center distance is large.
Of course, there are disadvantages: the instantaneous speed is uneven, resulting in poor transmission stability, a certain amount of shock and noise, no overload protection, and it is easy to jump teeth and drop the chain after wear.