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Asymmetrical rotor electric eddy current damper

An eddy current damper, asymmetric technology, used in textile cables, springs/shock absorbers, non-rotational vibration suppression, etc. Safety, increased cycle time, improved safety effect

Active Publication Date: 2017-08-29
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of damper has high requirements on the sealing of the instrument, and there is a problem of liquid leakage, which affects the reliability of the damper

Method used

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  • Asymmetrical rotor electric eddy current damper
  • Asymmetrical rotor electric eddy current damper
  • Asymmetrical rotor electric eddy current damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The control system for suppressing structural vibration in this embodiment is as follows: Figure 1-Figure 12 shown. It is composed of rotor, copper sheet 30, torsion spring 40, bearing 20 and various connecting parts. The rotor includes a casing 10, a magnet 18, a casing collar 11, and a baffle 13; the copper sheet 30 is fixed on the positioning tube 31; the bearing 20 is provided with a positioning hole 22 for positioning, and is fixed on the cable 0 with screws 12 ;The shell includes a positioning groove 17, a rear baffle 16 and an anti-rotation limiting bar 14; in order to fix the spring position, a spring positioning ring 41 is also fixedly connected to the cable 0; and the positioning ring 41 is provided with a limiting torsion spring The torsion-limiting nail 42 of 40 cooperates with the limiting nail 15 of the shell; the magnet 18 is mainly fixed by the positioning groove 17, and then further fixed by the baffle plate. Since the rotor can only do centrifugal mo...

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PUM

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Abstract

The invention discloses an asymmetrical rotor electric eddy current damper. The asymmetrical rotor electric eddy current damper comprises a rotor, a copper sheet, a bearing and a torsion spring. The rotor comprises a shell and magnets. The copper sheet is fixedly installed on an inhaul cable, and the shell is installed on the bearing. The bearing is installed on the inhaul cable. When the rotor rotates relative to the inhaul cable, the copper sheet can cut magnetic induction lines of the magnets, and an electric eddy current is generated on the copper sheet to dissipate vibration energy. The rotor has the moving trend opposite to the inhaul cable all the time, and the amplitude of the inhaul cable can be effectively restrained. The torsion spring plays the effect that the symmetry axis of the magnets is perpendicular to the vibration direction to serve as the balance position of the rotor on the inhaul cable of the main vibration direction. By means of the asymmetrical rotor electric eddy current damper, vibrations of the inhaul cable can be effectively controlled, energy saving and environmental protection can be achieved through the working mode, vibration control cost is reduced, and the structural safety can be effectively improved.

Description

technical field [0001] The invention provides a symmetrical rotor eddy current damper, which is used for suppressing the response of a cable under the action of vibration, and belongs to the field of structural vibration control. Background technique [0002] Vibration control in the field of civil engineering can generally be divided into two categories: active control and passive control according to the presence or absence of external energy input, as well as semi-active control and hybrid control formed by the combination of these two control methods. The commonly used passive control methods are: foundation vibration isolation, energy dissipation component vibration reduction system, energy dissipation device vibration reduction and vibration absorber vibration reduction. The main control methods of structural active control are: active frequency modulation mass damper, active anchor cable control, pulse control, aerodynamic wind deflector, etc. [0003] Passive contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/03F16F15/04F16G11/00
CPCF16F15/035F16F15/04F16G11/00
Inventor 谢发祥高翔赵炜吉伯海傅中秋
Owner HOHAI UNIV
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