时间：2015-05-05 20:21　作者：admin　点击： 次

The so-called shaft transmission is the transmission of the coupling, which includes jaws, gears, elastic, universal couplings, plum blossom couplings, etc. Its transmission efficiency is higher than any other transmission form, and the main reason is that relative sliding displacement does not occur. Does not generate heat.
Although the coupling has many forms, its main function is to transfer the torque on the driving shaft to the driven shaft at a constant speed and with high efficiency.Therefore, the coupling cannot change the magnitude, direction and speed of the force like a gearbox.
There is no gap transmission between the transmission part and the transmitted part: coupling transmission-gear transmission-belt transmission.
The reason is:
1. The gear transmission has friction between the driven wheel and the driving wheel.
2. There is a gap between the driving wheel and the driven wheel, and the coupling transmission can achieve no additional energy loss.
3. So the lowest transmission efficiency from high to low will consume a certain amount of extra energy.Therefore, the efficiency of the pulley is the highest. In addition to the shortcomings of the gear, the pulley also has the phenomenon of slipping, so its efficiency is second.