Dynamic and static bearing capacity calculating and curve plotting method for ball-column joint turntable bearing

Abstract

The invention relates to a dynamic and static bearing capacity calculating and curve plotting method for a ball-column joint turntable bearing. The plotting method comprises the steps that loading values of all main roller path rollers and auxiliary roller path steel balls are calculated by combining an equilibrium equation of the bearing according to geometric parameters generated before and after bearing of the ball-column joint turntable bearing; a relational expression of the contact stress of main roller path linear contact and the main roller path roller load and a relational expression of the contact stress of auxiliary roller path point contact and the auxiliary roller path steel ball load are solved, security coefficients of main roller path roller linear contact and auxiliary roller path point contact are solved by combining the allowable stress of the rollers and the steel balls, the appropriate relational expression is selected through comparison, and the rated life calculating formula of a complete set of bearings containing roller linear contact ferrules and steel ball point contact ferrules simultaneously is given; the moment effect caused by axial load eccentric magnitude limiting is taken into account, and therefore a plotted dynamic and static bearing curve truly reflects the actual bearing capacity and is beneficial for turntable bearing model selection and bearing parameter optimization.

Description

technical field [0001] The invention relates to the field of design and analysis of a ball-column combined turntable bearing, in particular to a method for calculating the dynamic and static bearing capacity of the ball-column combined turntable bearing and drawing a curve. Background technique [0002] Ball-column combined slewing bearings can withstand large axial loads, and can also withstand certain overturning moments and radial loads. Compared with three-row roller slewing bearings of the same size, ball-column combined slewing bearings The bearing capacity is equivalent, but its axial dimension is significantly reduced, and the axial structure is compact, which is more suitable for places with higher requirements for axial dimension, so it has better comprehensive economic benefits. When the ball-pillar combined slewing bearing is loaded, it contains both point contact and line contact, which brings great inconvenience to the analysis of its structural performance, an...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a ball-column combined turntable bearing dynamic and static bearing capacity calculation and curve drawing method, aiming at solving the problem that the existing ball-column combined turntable bearing load static and dynamic bearing capacity research method does not consider the shaft when the bearing is actually loaded. The eccentricity of the load in the direction of the load leads to inaccurate calculation results of the static and dynamic bearing capacity of the bearing load, and cannot accurately reflect the actual bearing capacity of the bearing.

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