Grinding Roller Bearing Inversion for Load Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing bearing arrangement in grinding rollers with an inner fixed and outer floating bearing experiences uneven load distribution, leading to increased wear and potential sliding instead of rolling in the tapered rollers, due to the inclination of the roller axis and non-central application of grinding forces, resulting in smearing and potential destruction of the bearing raceways.
Innovation Solution
Reversing the bearing arrangement by positioning the double-row tapered roller bearing as a fixed bearing in the outer area of the roller base body to absorb radial and axial forces, and moving the cylindrical roller bearing closer to the peripheral surface to reduce wear and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the double-row tapered roller bearing is positioned in the inner area as a fixed bearing, then the bearing arrangement can support the grinding roller, but the load distribution becomes uneven causing increased wear and sliding in the tapered rollers
Solution Approach 1:
The patent inverts the conventional bearing arrangement by positioning the fixed bearing (double-row tapered roller bearing) in the outer area instead of the inner area, and the floating bearing (cylindrical roller bearing) in the inner area. This inversion redistributes the loads evenly between the two rows of tapered rollers, preventing the sliding and wear that occurs when the fixed bearing is positioned conventionally in the inner area.
2Ease of manufacture
If the fixed bearing absorbs most radial and axial forces, then the floating bearing can be smaller and more cost-effective, but the load distribution on the tapered rollers becomes uneven
Solution Approach 1:
By inverting the bearing positions, the fixed bearing in the outer area and floating bearing in the inner area create a balanced load distribution on the tapered rollers while still allowing the floating bearing to be smaller and more cost-effective. The inversion ensures that both bearings share the load appropriately without causing sliding or excessive wear.
3Device complexity
If the outer row of tapered rollers is relieved of load, then the bearing structure simplifies, but the rollers slide instead of roll causing smearing and destruction
Solution Approach 1:
The inverted bearing arrangement ensures that both the inner and outer rows of tapered rollers remain properly loaded and function as rolling elements. By positioning the fixed bearing in the outer area, the patent prevents the outer row from being relieved of load, thereby maintaining proper rolling contact and preventing the sliding that leads to smearing and destruction.
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a grinding roller having an inclined, fixed inner roller axle (3), a roller jacket (6) being provided on a roller base body (7) . The rotatable roller base body (7) is mounted relatively to the fixed inner roller axle (3) by means of an arranged fixed bearing (11) and a floating bearing (12) which is spaced apart therefrom. The floating bearing (12) is provided in the region of the end face of the roller axle (3) and for supporting the roller base body (7) having the roller jacket (6) so as to allow their rotation, and the fixed bearing (11) is arranged on the roller axle (3) in an outwardly offset manner in the direction of the swing lever (14).