Jaw crusher eccentric shaft turn a week, moving jaw is swinging back and forth once. Therefore, the eccentric shaft RPM is the motion of the moving jaw per minute. Eccentric shaft speed is one of the main performance parameters of the crusher, speed directly affect the productivity, than the power consumption, and the content of crushing products, etc., so the speed is the main factor of crusher economic operation.
The test shows that rotating speed and productivity, than the power consumption, and the content of crushing products for the change of the relationship between: under the condition of a given job, crusher productivity growth with the increase of rotational speed. When the speed increased to a certain value, the productivity for the largest, after speed increase, productivity fell sharply, crushing products content also will increase. Change is that the power consumption of than before to achieve maximum productivity, than power consumption little change with the increase of rotational speed, but the maximum productivity, power consumption has increased dramatically with the increase of rotational speed. In addition, jaw crusher, the maximum speed of eccentric shaft should be lower than 430 r/min.
With traditional speed formula are exactly the same, but it induced the premise is completely different, it is completely according to the moving jaw trajectory is obtained, completely in line with the actual situation of compound pendulum jaw type motor broken jaw movement. And traditional obtained type is based on the result of the moving jaw on the basis of parallel moving, completely is not in conformity with the moving jaw movement actual situation, and six to one. , the Angle of rotational speed n, bite a and swing stroke Sx is matching the three parameters. After the mechanism design Sx as a fixed value, the spindle speed on the value of n jaw Angle of tooth surface bite a value at the end of the compression.