Cylindrical rolling body fragmentation contact stress detection method, terminal and computer readable storage medium

Abstract

The invention discloses a method for detecting the fragment contact stress of a cylindrical rolling body, and the method comprises the steps: dividing a bearing part of the cylindrical rolling body into a plurality of fragments in an axial direction of the cylindrical rolling body in an unequal manner according to the distribution condition of a load borne by the cylindrical rolling body, and enabling the fragments to be thinner in a place where the load is denser. According to the slicing method, the influence of stress concentration at the two ends of the cylindrical rolling body is fully considered, and the local contact stress of the cylindrical rolling body can be detected more accurately. In addition, according to the method, the edge stress is fully considered, a correction coefficient function is used when the real pressure value is calculated, the checking process of the contact stress of the cylindrical rolling body is more reliable, and the obtained fragment contact stress can effectively verify the rationality of a shape correction curve of the cylindrical rolling body. The invention further discloses a terminal and a computer readable storage medium.

Description

technical field [0001] The present application relates to the field of bearing design, and in particular to a method for detecting the contact stress of a cylindrical rolling element, a terminal, and a computer-readable storage medium. Background technique [0002] Tunnel boring machines work under harsh working conditions such as low speed, heavy load, high impact and vibration, and the forces to be borne by the main bearing include axial force, radial force and overturning moment. These complex joint loads have extremely high requirements on the bearing capacity, impact resistance, reliability and stability of the main bearing. The main bearing of the roadheader is usually a slewing bearing composed of three rows of cylindrical rollers. The cylindrical rollers are composed of rings, cylindrical rolling elements and cages. Cylindrical rolling elements are the key components in the main bearing of tunnel boring machine to bear the loads of axial force, radial force and over...

AI Technical Summary

Problems solved by technology

Later, the Lamina model used the slice method to calculate the cylindrical rolling element, but it did not consider the stress concentration at both ends of the cylindrical rolling element. This method of using a constant slice thickness at both ends of the cylindrical rolling element cannot obtain accurate results.

Images