Grinding and Installation of Thrust Bearing for Cone Crusher

First, the role of thrust bearing and structure Cone crusher thrust bearing role is: support the hollow eccentric mandrel, reduce the empty eccentric shaft running resistance. At the same time, the accuracy of its installation directly affect the meshing gap of the bevel gear, to ensure a reasonable space eccentric shaft sleeve and spindle with the gap, to avoid the "speed" phenomenon.
    Second, the thrust bearing grinding In the crusher during the operation, the thrust bearing on the upper plate 2 and the empty eccentric shaft 1 with the pin associated with the rotation; the following three claw round plate 5 through the surrounding three claws And the bottom cover 7 is mosaic; and the intermediate circular plate 3 and the middle circular plate 4 are relatively slidable. Then a total of three groups of contact surfaces between the pieces 2 and 3, between the pieces 3 and 4, between the pieces 4 and 5 between the need to scratch to ensure its good running state. The purpose of grinding is to make the plane bearing pressure evenly, to create conditions for good liquid lubrication. The whole process can be divided into coarse scraping and fine scraping two parts. When grinding, you can first check the flatness of the two contact surfaces, and use the reddish powder evenly and thinly to test so that the two contact surfaces are first rotated in the clockwise direction, and the second time can be rotated in the reverse direction. Cross the study. And then start rough scraping, scraping can be used when the 25mm flat blade or slightly larger diameter can also be. Rough scratch when the research will be all the scraping off the surface, no contact with the non-scraping, knife movement distance can not be greater than 25mm, scraping knife into a hook shape. So repeatedly after the research scraping. Each scraping once may have some part of the contact point.When the two contact points are basically evenly distributed, the blade can be carefully scraping oil point, this time should be noted from the circular plate center, the larger the diameter, contact requirements The distribution point should be better. Repeated fine grinding after the study, so that the contact between the two contact points in the 25mm X 25mm within no less than 3 points. 3 of the contact surface of the grinding can be used the same method. Taking into account the different material of the round plate, you can choose the material side of the hard disk first scratch, and as a reference plane. Contact surface contact point is not uniform or too many contact points, too little will affect the plane bearing the flat running state. In the field fault repair has repeatedly found that the movement of the three-jaw disk is not zero, forcing the three-legged circular plate on the circular jaw damage, exacerbate the circular plate (friction plate) wear on the circumference, wear from the round Into an irregular oval, so that crusher failure or cause "speed" phenomenon.