A Hydrodynamic Pressure Lubricated Thrust Bearing with High Degree Curved Pad

Abstract

The invention provides a high-order curved surface pad hydrodynamically lubricated thrust bearing. The high-order curved surface pad hydrodynamically lubricated thrust bearing comprises a thrust ring body and a thrust runner, and is characterized in that the thrust ring body is provided with a plurality of high-order curved surface pad structures formed by a plurality of high-order curved surfaces and a plurality of planes in a number the same as that of the high-order curved surfaces, wherein the high-order curved surfaces the corresponding surfaces of the thrust runner form convergent structures in a working process of the thrust ring body; the high-order curved surfaces and planes of the high-order curved surface pad structures are intersected to form straight interaction lines, and the intersection lines are convergent towards the center of the thrust ring body and deviated from the center of the thrust ring body. According to the high-order curved surface pad hydrodynamically lubricated thrust bearing, the defects of low bearing load-carrying capacity, short service life, poor reliability, high requirements on working environments and the like of a fixed pad hydrodynamically lubricated thrust bearing in the prior art caused by unreasonable convergent wedge structures formed by planes-inclined planes, steps and the like are overcome, and the high-order curved surface pad hydrodynamically lubricated thrust bearing is particularly applied to a working environment where the working rotating speed of equipment greatly changes and the axial load is high.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a hydrodynamic lubricated thrust bearing with high-order curved surface pads. Background technique [0002] The prior art fixed pad hydrodynamic lubricated thrust bearing adopts plane-inclined plane, steps and other forms to form a convergent wedge-shaped structure. Since the linear velocity of the thrust bearing varies greatly along the radial direction, a single convergent angle obviously cannot meet the needs of different bearings in the radial direction. The location meets the maximum bearing capacity requirements at the same time, and the unreasonable distribution of the convergent structure along the radial direction leads to many disadvantages such as small bearing capacity, temperature rise, large power loss, short life, small operating speed range, poor reliability, and high requirements for the working environment. [0003] The sliding bearing with textured structure i...

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Problems solved by technology

[0002] The prior art fixed pad hydrodynamic lubricated thrust bearing adopts plane-inclined plane, steps and other forms to form a convergent wedge-shaped structure. Since the linear velocity of the thrust bearing varies greatly along the radial direction, a single convergent angle obviously cannot meet the needs of different bearings in the radial direction. The location meets the maximum bearing capacity requirements at the same time, and the unreasonable distribution of the convergent structure along the radial direction leads to many disadvantages such as small bearing capacity, temperature rise, large power loss, short life, small operating speed range, poor reliability, and high requirements for the working environment.

[0003] The sliding bearing with textured structure is used in the structure design of the existing fixed pad thrust bearing, and the bearing capacity is limited; the pad surface adopts a complex curved surface design method, which ignores the manufacturing factors; the thrust ring is deformed by force to improve the passive method of bearing capacity. It is difficult to realize, and it is difficult to control manually; the design of the tilting pad will lead to many disadvantages such as large volume, complex structure and difficult maintenance.

Especially the high-speed and heavy-load operation characteristics of modern machinery and equipment often lead to a large temperature rise of the lubricating medium of the sliding bearing under high-speed working conditions, a significant decline in the dynamic pressure lubrication effect of the sliding bearing, and poor heat exchange performance of the lubricating medium, resulting in a significant local temperature rise. It affects the bearing capacity of the sliding bearing, and at the same time, the reliability of the bearing is reduced and the service life is shortened

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