Changeable stepped damping thrust bearing

Abstract

The invention relates to a changeable stepped damping thrust bearing. The thrust bearing is mainly composed of a pressing head (1), a thrust disc (2), a plurality of movable bush assemblies, a plurality of fixed bushes (4) and a supporting ring (5), wherein the pressing head (1), the thrust disc (2), the movable bush assemblies, the fixed bushes (4) and the supporting ring (5) are arranged from top to bottom. The thrust disc (2) is connected with a rotary shaft of the bearing through the pressing head (1), and the thrust disc (2), the rotary shaft of the bearing and the pressing head are coaxially and fixedly connected. Each movable bush assembly and the corresponding fixed bush (4) are attached together to form a stepped variable-height bearing bush assembly. The multiple bearing bush assemblies are arranged on the supporting ring (5) in the circumferential direction to share the total load in the axial direction. The movable bush assemblies of the bearing bush assemblies are mounted in front of the fixed bushes (4) when seen from the rotating direction of the thrust disc (2). The changeable stepped damping thrust bearing can be used for designing of bearings which often work under variable working conditions, allow inclination of thrust discs and have high requirements for the bearing capacity and the damping performance of naval ships and the like.

Description

Technical field [0001] The present invention belongs to the technical field of sliding bearings, and particularly relates to a sliding bearing with a variable stepped structure and a vibration reduction effect formed by a fixed thrust pad and a movable thrust pad supported by a damping pad. Variable step damping thrust bearing. Background technique [0002] The main types of sliding bearings currently used in engineering are fixed shoe bearings [US Patent US5456535: Journalbearing, Patent Grant Date: October 10, 1995] and tilting shoe bearings [US Patent US5795077: TiltingPadJournalbearing, Patent Grant Date: 1998 August 18]. The fixed-pad thrust bearings that bear axial force generally include plane multi-groove thrust bearings, oblique-plane thrust bearings and stepped surface thrust bearings. The most common step bearing is the Rayleigh step bearing designed by Rayleigh in 1918. Through the variational method, he found that the load capacity is highest when the shape of the ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a fixed thrust pad and a movable thrust pad supported by a damping pad in order to overcome the shortcomings that the traditional stepped thrust bearing cannot achieve the optimal load capacity under variable working conditions and the vibration damping effect is poor. Combination variable step damping thrust bearing

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