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Electromagnetic self-balance dry-friction damper with elastic bearing and used for rotor bearing structure of rotary machine

A technology of dry friction damper and elastic support, which is applied in the direction of mechanical equipment, rotation vibration suppression, spring/shock absorber, etc. It can solve the problem of inability to work in high temperature environment, complex structure of dry friction damper, and small friction adjustment range and other problems, to achieve the effect of small axial size of the structure, meeting the requirements of vibration and stability control, and a wide range of changes

Pending Publication Date: 2020-01-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, such as the complex structure of the dry friction damper, the small adjustment range of the friction force, the difficulty in precise control of the friction force, and the inability to work in high temperature environments, the present invention proposes an electromagnetic Self-balancing elastic bearing dry friction damper

Method used

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  • Electromagnetic self-balance dry-friction damper with elastic bearing and used for rotor bearing structure of rotary machine
  • Electromagnetic self-balance dry-friction damper with elastic bearing and used for rotor bearing structure of rotary machine
  • Electromagnetic self-balance dry-friction damper with elastic bearing and used for rotor bearing structure of rotary machine

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Embodiment Construction

[0020] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the electromagnetic self-balancing elastic support dry friction damper of a rotating machinery rotor support structure provided by the present invention includes a rotating shaft 1; an elastic support 2; an elastic support bracket 3; a bearing seat 4; a bearing 5; Right dynamic friction plate 7A; Left dynamic friction plate 7B; Right static friction plate 8A; Left static friction plate 8B; Right force sensor 9A; Left force sensor 9B; Right static friction plate support 10A; Coil 12; right coil support 13A; left coil support 13B; electromagnet outer magnetic ring 14; right inner positioning ball 15A; left inner positioning ball 15B; right axial preload butterfly spring 16A; left axial preload butterfly spring 16B; right preload adjustment plate 17A; left preload adjustment plate 17B; outer position...

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Abstract

The invention discloses an electromagnetic self-balance dry-friction damper with an elastic bearing and used for a rotor bearing structure of a rotary machine. The electromagnetic self-balance dry-friction damper with the elastic bearing and used for the rotor bearing structure of the rotary machine comprises the elastic bearing comprises the elastic bearing, a dynamical friction sheet, a dynamical friction sheet support, a static friction sheet, a static friction sheet support, a force sensor and an electromagnet assembly. The dynamical friction sheet is installed on the dynamical friction sheet support of the elastic bearing, and carries out radial movement along with the elastic bearing. The static friction sheet is located at one side of the dynamical friction sheet, and capable of moving in the axial direction. A control current is applied onto a coil on the electromagnet assembly, an axial attraction force is generated on the dynamical friction sheet, the dynamical friction sheetis close to the static friction sheet, a positive pressure is generated on a friction pair formed by the dynamical friction sheet and the static friction sheet, and then a friction force is generated, so that control over the vibration and stability of a rotor system of the rotary machine is realized. Real-time accurate control can be carried out on the friction force between the dynamical friction sheet and the static friction sheet through the control current in the electromagnet coil; and the electromagnetic self-balance dry-friction damper with the elastic bearing and used for the rotor bearing structure of the rotary machine has a wide application prospect in the field of active control over the vibration and stability of the rotor system of the rotary machine.

Description

technical field [0001] The invention relates to the field of rotating machinery, in particular to an electromagnetic self-balancing elastically supported dry friction damper of a rotating machinery rotor supporting structure. Background technique [0002] With the development of various rotating machinery, such as aeroengines, gas turbines, energy recovery devices, etc., towards high power, high speed, and light structure, the vibration of the rotor system is more sensitive to various excitation factors, especially for those working in a For the flexible rotor system above the first or several critical critical speeds, how the rotor system can pass through each order of bending critical speed with less vibration is a very important issue. Due to its simple structure and the ability to easily adjust the critical speed of the rotor system, the elastic support structure has been widely used in the support structure of many rotating machinery rotors. However, the general elasti...

Claims

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Application Information

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IPC IPC(8): F16F15/00F16F15/12
CPCF16F15/005F16F15/1201
Inventor 祝长生巩磊
Owner ZHEJIANG UNIV
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