Intelligent elliptical bearing device driven by piezoelectric ceramic

Abstract

The invention discloses an intelligent elliptical bearing device driven by piezoelectric ceramic. The intelligent elliptical bearing device comprises two parts of an elliptical bushing sliding bearing mechanism and a detection control drive system with an adjustable and controllable gap. The elliptical bushing sliding bearing mechanism is composed of a bearing upper bushing and a bearing lower bushing which are installed in pairs; in the detection control drive system, a shaft neck horizontal displacement sensor and a shaft neck vertical displacement sensor are installed near a shaft neck of an intelligent elliptical sliding bearing and are connected with a controller, a bearing lower bushing displacement sensor is installed on the bottom face of a foundation support guide groove below the bottom face of the bearing lower bushing, and a piezoelectric ceramic driver is installed on a foundation support. The controller controls elongation or shortening of the piezoelectric ceramic driver, a position signal of the bearing lower bushing is extracted by the bearing lower bushing displacement sensor again, and the controller sends out a signal again to intelligently control the position of the bearing lower bushing. Through intelligent control over the position of the bearing lower bushing, the oil film thickness and shape of a bearing are intelligently controlled, and therefore the work state of the bearing is controlled intelligently so as to be adapted to various complex working conditions.

Description

technical field [0001] The invention belongs to the field of mechanical friction, wear and lubrication and mechanical design, and particularly relates to an intelligent elliptical bearing device driven by piezoelectric ceramics, which is especially suitable for radial sliding support under complex working conditions. Background technique [0002] Sliding bearings have the advantages of large load-carrying capacity, impact resistance, good vibration resistance, and high running precision. The stable hydrodynamic lubricating oil film can separate the relative moving surfaces without direct contact, thereby greatly reducing friction and wear. Although it is replaced by rolling bearings in general equipment, such as gearboxes, machine tools, vehicles, etc., it is still widely used in many large and key equipment, such as generator sets, gas turbines, and ship spindles. Sliding bearings can be divided into radial sliding bearings and thrust sliding bearings according to the direc...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an intelligent elliptical bearing device driven by piezoelectric ceramics. This sliding bearing can solve the shortcomings of existing radial sliding bearings that cannot adapt to various complex operating conditions, and is especially suitable for radial sliding bearings with complex operating conditions. support

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