Magneto-rheological damper for suspended mass pendulum

A magneto-rheological and damper technology, which is applied in the direction of spring/shock absorber, vibration suppression adjustment, mechanical equipment, etc., can solve the problems of affecting the structure's vibration damping effect and the inability to adjust the control force in real time, so as to achieve broad market promotion and application Foreground, improved earthquake resistance and wind resistance, and low power consumption

Active Publication Date: 2014-02-26
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the traditional mass pendulum system, there are the following problems: (1) The swing angle of the general suspended mass pendulum is within a certain range to achieve the control effect
However, if the earthquake or wind vibration is large, the swing angle of the suspender (hanging wire) will be

Method used

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  • Magneto-rheological damper for suspended mass pendulum
  • Magneto-rheological damper for suspended mass pendulum
  • Magneto-rheological damper for suspended mass pendulum

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the present invention is described in detail:

[0023] A magneto-rheological suspension mass pendulum damper, which is composed of a bracket 1, a suspension rod 2, a counterweight 3, a magnetorheological pendulum shaft 4 and a bearing rod 6; it is characterized in that the counterweight 3 is fixed by bolts 14 , which are symmetrically hung on the lower end of the boom 2 on both sides; the upper end of the boom 2 is fixed on the bearing outer ring 10 of the magneto-rheological pendulum shaft 4 through the bearing sleeve 17; In the middle, the two ends of the horizontal support rod 6 are respectively fixed on the bracket 1; the horizontal support rod 6 cannot rotate around the axis.

[0024] The magneto-rheological pendulum shaft 4 includes a bearing inner ring 9, a bearing outer ring 10, balls 13, an excitation coil 8 and a rubber seal 7; the bearing balls 13 are located in the ball groove 21 between the bearing inner ring ...

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Abstract

The invention discloses a magneto-rheological damper for a suspended mass pendulum, and belongs to the field of vibration control of civil engineering. The magneto-rheological damper for the suspended mass pendulum is a suspended-mass-pendulum damper capable of being controlled in a semi-active mode. The magneto-rheological damper comprises a magneto-rheological pendulum shaft system, a rigid suspender, a balancing weight and the like. A closed magneto-rheological device is designed in a rotary bearing of the suspender to close a rotary shaft in a magneto-rheological fluid environment; blades are arranged on the bearing and control the state of magneto-rheological fluid through a control power source so as to achieve the objective of adjustable blade resistance. The magneto-rheological damper is applicable to flexible structures and high-rise structures of civil engineering structures, and breaks through the limitation of uncontrollable pendulum angles and speeds of pendulum shafts of conventional mass pendulum systems. The civil engineering structures are large in size, tuned mass pendulum dampers applied to the civil engineering structures are large in mass, and thus high power is needed for realization of semi-active control of mass pendulum devices. A magneto-rheological system is low in power consumption and high in force output, so that semi-drive control on the tuned mass pendulum dampers can be realized only by a small amount of currents.

Description

Technical field: [0001] The invention belongs to the field of vibration control of civil engineering, specifically, it is a semi-active control damper for controlling the swing angular velocity and swing angle by changing the state of the magneto-rheological system of the pendulum shaft, so as to adjust the control force. Background technique: [0002] The anti-seismic and wind-resistant design of traditional civil engineering structures is to dissipate earthquake energy by improving the ability of the structure itself. However, for relatively serious natural disasters, such as strong earthquakes and typhoons, this method is neither economical, nor can it meet the safety requirements, and cannot achieve the expected effect. Structural vibration control is an effective method for structural wind and earthquake resistance. In the past 30 years, it has achieved fruitful results in theoretical research and engineering applications. Suspension mass pendulum system is an effectiv...

Claims

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Application Information

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IPC IPC(8): F16F15/027F16F15/03
Inventor 霍林生李旭李宏男
Owner DALIAN UNIV OF TECH
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