Flexible dynamic-pressure gas thrust bearing and assembling method thereof

Abstract

The invention discloses a flexible dynamic-pressure gas thrust bearing and an assembling method thereof. The flexible dynamic-pressure gas thrust bearing comprises a bearing block, an elastic support connected to the bearing block and top-layer flat foil connected to the elastic support. The top-layer flat foil comprises a plurality of flat foil pieces fixedly connected to the elastic support to form a bearing working plane. The flexible dynamic-pressure gas thrust bearing has the advantages that the thrust bearing does not have an inlet slope structure machined in advance, the inlet slope structure of the thrust bearing is formed through self-acting during bearing work, the bearing does not limit the rotation direction of a rotor thrust collar, that is to say, the rotor thrust collar can rotate along different directions, the bearing can work normally, and a traditional flexible dynamic-pressure gas bearing only allows the rotor thrust collar to rotate along one direction; the flexible feature of the dynamic-pressure gas thrust bearing can be regulated simply, and the rigidity feature of the bearing can be regulated conveniently by changing the elasticity of the elastic support so as to adapt to the rigidity requirements on the bearing under different application conditions.

Description

technical field [0001] The invention relates to a dynamic pressure thrust bearing, in particular to a dynamic pressure thrust bearing using a flexible plane surface as the bearing working surface and an assembly method thereof. Background technique [0002] The dynamic pressure gas bearing is divided into the dynamic pressure gas radial bearing and the dynamic pressure gas thrust bearing according to the direction of limiting the rotor displacement. The dynamic pressure gas radial bearing limits the radial displacement of the rotor and bears the radial load, while the dynamic pressure gas bearing The compressed gas thrust bearing limits the axial displacement of the rotor and bears the load from the axial direction. Dynamic pressure gas bearings can be divided into rigid surface dynamic pressure gas bearings and flexible surface dynamic pressure gas bearings according to the rigidity or flexibility of the bearing surface. It has the advantages of low assembly precision requ...

AI Technical Summary

Problems solved by technology

However, in the actual manufacturing process, it is found that due to the very small slope angle of the inlet slope and the flexibility of the bearing surface, it is difficult to process, making it very difficult to process an ideal inlet slope structure

The unsatisfactory entrance slope structure will not only increase the bearing capacity of the bearing, but will cause many problems such as large starting torque of the bearing, serious local wear, and difficulty in taking off, which will affect the normal use of the bearing.

[0005] On the basis of inheriting the flexibility of the traditional flexible thrust pressure gas bearing, the present invention proposes a planar surface flexible dynamic pressure gas thrust bearing without an inlet slope, which overcomes the problems that the traditional flexible dynamic pressure thrust bearing is difficult to process and has unsatisfactory performance

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