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Shaft is an important part for <a title="roll crusher" href="http://www.china-crusher.com/teeth-roll-crusher.html">roll crusher</a>; it plays roles of supporting rotating parts and transmitting motion and power. The structural design of drive shaft usually begins from the assembly program of parts in shaft, then takes the rational design of the shape and size of shaft structure in accordance with the requirements of the installation, positioning and manufacturing process of parts in shaft; finally, checks the strength of shaft. The strength of the drive shaft has a great impact on the efficiency and capacity of the crusher.
The following measures are aimed to improve the strength of the drive shaft of the <a href="http://www.ore-machine.com/teeth-roll-crusher.html">roll crusher</a>.
(1) Improve the axial force status
The mounting position and shaft structure of drive shaft parts have a great impact on the force of the shaft. When the shaft has more than two parts of output torque, we should arrange the input torque parts in the middle of the axis so that significantly reduce the maximum torque of the shaft.
(2) Reduce the stress concentration
The cross-section of the shaft and the stress concentration produced by interference fit are major factors causing fatigue damage. Therefore, we should minimize the source of stress concentration and reduce stress concentration in design, and avoid drilling, grooving and processing thread in shaft especially the point with large stress. In addition, the quality of shaft surface also has a significant effect on the fatigue strength; we must determine the surface roughness reasonably.
(3) Take reasonable structural technical
Having determined the basic shape of the shaft, we should take reasonable detailed design on structure according to the requirements of assembly and manufacturing process. For example, arrange same shaft keyway on the same bus; take same size for shaft keyway width and roundness, etc.
Original link: http://www.china-crusher.com/news257.htm