What factors can cause the slewing ring to jam

2019-08-27

With the rapid development of the national economy, the scope of equipment such as lifting and excavation has become more and more extensive, the structure of the mainframe has become more and more compact, the carrying capacity has become stronger, and the equipment has become lighter. The slewing ring/slewing table bearing, as an important component, also shows a trend of lightweight. In the process of using the slewing bearing, some customers experienced abnormal failures such as jamming, rolling track depression, and fracturing.

The reasons for this situation are complicated, but they can be summed up as follows: First, the raw materials and manufacturing process of the slewing ring are unqualified. Second, due to the unreasonable design of the slewing ring/slewing ring bearing lack of rigidity, the high-strength bolt connection fails. And once the above situation of slewing ring bearing occurs, it will inevitably cause unnecessary losses and troubles to customers. I sincerely hope that customers will fully consider the three important factors of quality, skill and price when choosing slewing ring/slewing ring bearings. Choose centering products and cost-effective Better product.

Due to the inevitability of the soft belt on the slewing bearing equipment, it is required that the user who uses and selects the slewing bearing equipment should have a reasonable orientation of the soft belt of the equipment to improve the service life of the bearing. The general principle is to try to put the soft belt equipment in the direction of the smallest compression load during the load change. Generally speaking, the upper loop soft belt of general slewing equipment is in the direction perpendicular to the projection line of the pitch rolling surface. For example, the upper loop soft belt of the ship loader or stacker-reclaimer slewing equipment requires the equipment to be perpendicular to the cantilever centerline and cut through the center of rotation. , That is, standing on the center of rotation facing the left or right side of the cantilever at 90 degrees. In general mechanical design, the soft belt will not have the maximum force of the support roller of the slewing bearing equipment in this position.

The equipment orientation of the lower ring soft belt of Jiangsu Tianyue slewing bearing slewing equipment should be determined according to the center of gravity of the equipment and the scope of the slewing viewpoint. If the turning point of view is 100 degrees left and right, and the maximum center of gravity of the upper part of the turning is forward, it is recommended to place the lower ring soft belt equipment at the rear, that is, 180 degrees. If the position of the center of gravity of the upper part of the rotation is flat in the front and rear directions, the viewpoint position of the lower ring soft belt of the device can be arbitrary.