Variable-performance radial bearing formed by controllable tilting pad and bearing pad

Abstract

The invention relates to a variable-performance radial bearing formed by controllable tilting pads and a bearing pad. The variable-performance radial bearing consists of nine controllable tilting pads and one bearing pad. The bearing pad is a fixed pad and is arranged at the bottom of the bearing. The nine controllable tilting pads are distributed in three rows along an axial direction at equal distances and are distributed in three lines along a circumferential direction at equal angles. Each controllable tilting pad comprises a controller and a tilting pad. The variable-performance radial bearing formed by the controllable tilting pads and the bearing pad has the beneficial effects that the radial position of the tilting pads can be changed by rotating a controller adjusting screw, the dynamic characteristic of the bearing can be changed and the dynamic characteristic coefficient of the bearing can be recognized; since the bearing is longer than a common bearing, the situations that a rotor tilts and deflects when the rotor is supported by a single bearing can be effectively avoided by controlling the radial position of the tilting pads at two ends; by controlling the nine tiling pads in a combined way, various loading ways can be simulated and the bearing performance similar to bearings such as elliptical bearings can be generated; the variable-working-condition adaptability of the bearing and the power stability of a bearing-rotor system are improved.

Description

technical field [0001] The invention belongs to the technical field of sliding bearings, and relates to an identifiable radial bearing with variable stiffness and damping coefficient, which is composed of controllable tiltable pads and bearing pads working together. Background technique [0002] Radial sliding bearing is a key component widely used in rotating machinery. It is one of the most vulnerable parts of the whole machine and affects its mechanical performance. Under large-scale high-speed light-load or medium-load operation conditions, the bearing The design is in the form of variable structure, controllable performance, and measurable performance. It is of great practical significance to improve the static and dynamic characteristics of the bearing, improve the adaptability of the bearing to variable working conditions, improve the reliability of the bearing operation, and improve the dynamic stability of the bearing rotor system. [0003] The types of radial slidi...

AI Technical Summary

Problems solved by technology

Fixed pad sliding bearings are widely used because of their simple structure, large load capacity and easy processing, but the commonly used fixed pad sliding bearings have poor dynamic stability and low rigidity

Although the tilting pad sliding bearings generally have better dynamic stability, the structure is complex and the bearing capacity is relatively low.

Their common feature is that the bearing performance is uncontrollable and cannot meet the needs of reliable work under changing working conditions.

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