The working principle of excavator

The excavator is first of all a kind of machinery, the original intention of the mechanical design is to improve work efficiency, the excavator is no exception, all machinery is the transmission of force, the excavator is different from the common mechanical equipment is that it is not the same way of transmission, he is to use hydraulic oil to transmit force. So most excavators are also called hydraulic excavators for this reason.

The principle is simply the fluidity and incompressibility of oil, because there is no water in the oil, and there is air in the water, so the water can be compressed and the oil can not. So in a confined space, like a pipe, you put pressure on one end of the oil and it reflects very quickly on the other end, 

and the loss of force in this transfer process is very small, of course, depending on the tightness, and the purity of the oil.

Know the transmission mode, it is very different from other mechanical power is dependent on the engine, 

there is also an electric motor drive, and then the control is by hydraulic valve, 

the work is by cylinder, the rest are common things more magical thing is that the excavator can rotate 360 degrees infinite, it actually relies on a small device to solve the problem, called the center joint, 

That is, there is an oil distribution device in the center of the rotation, 

just like the disc gear inside the differential, just change the force in one direction to solve the problem. 

It can only be said that people's wisdom crystallization is how wonderful things, some people are really geniuses. 

There is a hydraulic pump, this is very simple, have you seen the hydraulic pump, there is no tap water in the home before, the principle is the same, It is driven by the engine to apply force to the front end of the hydraulic oil, and then reflected in the end working device. 

There is also the working principle of walking and rotating, in fact, it is to turn the press over and drive the lever