Online vibration control tilting-pad radial sliding bearing device

A radial sliding and vibration control technology, applied in the direction of sliding contact bearings, etc., can solve the problems of severe vibration, oil film oscillation, etc., and achieve the effect of suppressing vibration and even unstable working conditions

Inactive Publication Date: 2013-05-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of nonlinear excitation sources (mainly nonlinear oil film force), the rotor-bearing system becomes a self-excited vibration system under certain conditions, resulting in severe vibration and even oil film oscillation, leading to serious accidents

Method used

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  • Online vibration control tilting-pad radial sliding bearing device
  • Online vibration control tilting-pad radial sliding bearing device
  • Online vibration control tilting-pad radial sliding bearing device

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0024] see Figure 1 to Figure 3 As shown, the present invention is a tilting pad radial sliding bearing device with online vibration control, which includes four parts: a radial tilting pad sliding bearing with adjustable state, a detection unit, a control unit and an actuator; the state is adjustable The tilting pad radial sliding bearing includes radially adjustable tilting pads 6 installed on the bearing housing 4 at equal intervals. The specific number of radially adjustable tilting pads 6 can be determined according to actual needs. The back of the adjustable tiltable pad 6 is connected to the support block 8, and the support 8 is connected to the lead screw nut 14 through the wedge block 3; the detection unit includes a first vibration sensor 9 and a second vibration sensor 10, the first The vibration sensor 9 and the second vibration sensor 10 are installed r...

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Abstract

The invention relates to an online vibration control tilting-pad radial sliding bearing device which comprises a state-adjustable tilting-pad radial sliding bearing, a detection unit, a control unit and an execution mechanism, wherein the radial position of each pad of the state-adjustable tilting-pad radial sliding bearing can be adjusted in real time; in the detection unit, a high-precision vibration sensor is mounted near the tilting-pad sliding bearing and connected with a main control computer; the control unit mainly comprises a main control computer and is connected with a servo motor and an automatic stop protection system (alarm); and the execution mechanism comprises a ball screw connected with the servo motor, a wedge block mounted on a screw nut and a support block in contact with the wedge block. The device provided by the invention judges the bearing state through the collected vibration signal in the operation process, performs corresponding adjustment on the radial position of the tilting pad according to the judgment result, and even executes automatic stop protection so as to realize online control on the bearing vibration to meet control requirement for vibration in the actual operation process of the bearing.

Description

technical field [0001] The invention belongs to the technical field of sliding bearing devices, and relates to a sliding bearing device. Background technique [0002] Radial sliding bearing is a key supporting component widely used in rotating machinery, and it is one of the key components affecting the mechanical performance of the entire machine. Tilting pad sliding bearings are widely used due to their advantages such as low noise, low frictional power consumption, stable operation, little influence on manufacturing, installation and performance by the geometric shape of the shaft diameter, and automatic adjustment of their state with load changes. However, due to the existence of nonlinear excitation sources (mainly nonlinear oil film force), the rotor-bearing system becomes a self-excited vibration system under certain conditions, resulting in severe vibration and even oil film oscillation, leading to serious accidents. Therefore, it has important practical significanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C27/02
Inventor 徐华周夕维熊显智王琳付玉敏
Owner XI AN JIAOTONG UNIV
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