A bearing pad structure of a tilting pad radial bearing

Abstract

The invention discloses a bearing shell structure of a tilting pad radial bearing, which comprises a bearing body, a bearing shell and a journal. A bearing shell is arranged between the journal and the bearing body. A boss is arranged on the outside of the bearing bush. On the radial plane, it is in the shape of a small arc, and on the axial plane, the boss is in the shape of a large arc. The radial small arc radius r of the boss is between 3-20mm. The radius R of the large axial arc of the boss is not less than 800mm. The invention has a compact and reasonable structure; the bearing bush can swing in the axial plane to ensure the uniform distribution of the oil wedge in the axial direction, thereby improving the working stability of the bearing.

Description

technical field [0001] The invention relates to a bearing pad structure of a tilting pad radial bearing, in particular to an improved structure of the bearing pad, and belongs to the technical field of mechanical structures. Background technique [0002] In the existing technology, the bearings on the high-speed shaft of the high-speed centrifugal fan generally use tilting pad bearings. Wedges are used to bear the load. The fulcrum on the bearing pad generally adopts a semi-cylindrical structure, and the bearing pad cannot swing in the axial direction. Due to manufacturing errors and other reasons, when the center line of the journal shaft is inclined, the bearing pad cannot compensate for this error in the axial direction. The uneven distribution of wedges in the axial direction will affect the working stability of the bearing in the slightest, and the contact between the bearing pad and the journal at high speed will damage the bearing pad. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, the bearings on the high-speed shaft of the high-speed centrifugal fan generally use tilting pad bearings. Wedges are used to bear the load. The fulcrum on the bearing pad generally adopts a semi-cylindrical structure, and the bearing pad cannot swing in the axial direction. Due to manufacturing errors and other reasons, when the center line of the journal shaft is inclined, the bearing pad cannot compensate for this error in the axial direction. The uneven distribution of wedges in the axial direction will affect the working stability of the bearing if it is light, and the contact between the bearing pad and the journal at high speed will damage the bearing pad

Images