Carrying device under high overload resistance configuration of bearing and characteristic evaluation method

Abstract

The invention discloses a carrying device under high overload resistance configuration of a bearing and a characteristic evaluation method. The carrying characteristic evaluation method under the highoverload resistance configuration of the bearing comprises the following steps that firstly, a configuration method of radial high overload resistance of a cylindrical roller bearing and a centripetal knuckle bearing and axial high overload resistance of a double-row full-complement angular contact ball bearing is proposed; the cylindrical roller bearing and the centripetal knuckle bearing are installed at the two ends of a rudder shaft so as to solve the problem about aligning performance of the centripetal knuckle bearing; and the centripetal knuckle bearing is used for enabling the ruddershaft to bear certain Y-direction overload. Secondly, taking the cylindrical roller bearing as an example, in order to characterize the carrying characteristic of high overload resistance of the bearing, a bearing maximum radial static load concept and a checking method are proposed. The engineering realization is simple, scientific and effective, and the complexity of a steering engine structureis effectively reduced; the bearing maximum radial static load concept and the checking method are proposed, and a certain engineering basic theoretical depth is achieved; and the method has wide applicability and can be applied to various high-overload working conditions such as precision guided weapons.

Description

Technical field[0001]The present invention belongs to the field of precisely guided weapon flight control, and is specifically involved in a bearing device and a characteristic evaluation method under high overload configuration.Background technique[0002]In recent years, the development of precision missile drugs has been greatly improved, and it has the ability to scratch and high-efficiency and high-efficiency damage, which has become a high-tech and information warfare. By increasing precise guidance assemblies in the shell, a ballistic correction can be realized to effectively improve the hit accuracy of ammunition.[0003]However, the ammunition is in the launch process, the shells must experience huge overloads to accelerate the initial speed of the expected emission, the amplitude peak of the overload can reach more than 2000G (G is the gravity acceleration, the same), the action time is tens of milliseconds Within. For example, the maximum overload pulse generated by 155mm gre...

AI Technical Summary

Problems solved by technology

"Based on the elastoplastic Hertz theory, Palmgren's formula, and Mises criterion, the paper deduced the relationship between the total deformation of the roller and the raceway in contact with the load, but the verification test shows that this relationship is only applicable to low overload conditions.

[0009] In summary, the prior art has not yet proposed a configuration and load-carrying characteristic evaluation method for steering gear bearings against high overload, especially the evaluation method for steering gear bearing load-carrying characteristics applied to short-term high-overload steering gears.

Images