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Suspension type composite tuning vibration reduction device and method

A vibration damping device and suspension technology, which is applied in the direction of protective buildings/shelters, building components, building structures, etc., can solve the problems of reducing the vibration damping effect and not being able to dynamically adjust the vibration damping force of the natural vibration cycle, etc. To achieve the effect of improving stability, enhancing the effect of vibration reduction and energy consumption, and improving the effect of vibration control

Active Publication Date: 2021-10-19
POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional suspended mass pendulum dampers are mostly passive vibration reduction, and cannot dynamically adjust the natural vibration period and vibration damping force according to the service conditions of the structure and real-time vibration, which reduces its vibration reduction effect

Method used

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  • Suspension type composite tuning vibration reduction device and method
  • Suspension type composite tuning vibration reduction device and method
  • Suspension type composite tuning vibration reduction device and method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0030] This embodiment provides a suspension compound tuning vibration damping device, such as figure 1 and figure 2 As shown, it includes a frame body 1, an energy dissipation unit 12, a mass ball 11, and a suspension mechanism. The frame body 1 is used to support various components, and its structure can be set according to actual installation requirements; the frame body 1 of this embodiment is a rectangular frame. The suspension mechanism is set at the center of the frame body 1, and the top of the suspension mechanism is installed with the first connecting piece 2, which is fixed to the transmission tower structure (such as a transmission tower) through the first connecting piece 2 when in use; the mass ball 11 is installed at the bottom of the suspension mechanism end.

[0031] The mass ball 11 is a metal solid ball, such as an iron solid ball, so as to provide a large enough mass with as small a volume as possible, which is beneficial to provide a damping force for th...

Embodiment 2

[0046] This embodiment provides a suspension-type composite tuning and vibration reduction method. Using the vibration reduction device described in Embodiment 1, when the structure of the transmission tower vibrates, the mass ball 11 is caused to swing; the swinging mass ball 11 drives the traction cable 14 The stretching causes the rotating shaft 22 of the energy consumption unit 12 and the vane 9 to rotate, stirring the magnetorheological fluid in the damping chamber 26 .

[0047] The energized coil 16 is powered on to generate a magnetic field, and the strength of the magnetic field is changed by changing the magnitude of the current, thereby affecting the viscosity of the magnetorheological fluid and adjusting the damping force and energy dissipation capacity of the energy consumption unit. When the traction cable 14 is pulled, the energized coil 16 of the corresponding energy consumption unit 12 is powered on to generate damping force and energy dissipation capacity. When...

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Abstract

The invention discloses a suspension type composite tuning vibration reduction device and method, and belongs to the technical field of vibration reduction. According to the technical scheme, the suspension type composite tuning vibration reduction device comprises a frame body and a suspension mechanism which is arranged in the center of the frame body and can rotate relative to the frame body, and a mass ball is installed at the tail end of the suspension mechanism; a plurality of energy consumption units which are arranged at intervals in the circumferential direction of the suspension mechanism are fixed on the frame body; and each energy consumption unit comprises a damping cavity and a stirring mechanism arranged in the damping cavity, the stirring mechanisms are connected with the suspension mechanism through traction ropes, and the suspension mechanism can drive the stirring mechanisms to stir magnetorheological fluid filled in the damping cavities when swinging. According to the suspension type composite tuning vibration reduction device and method, the vibration response of a power transmission tower structure in all directions under the action of external force can be reduced, and the purposes of energy consumption and vibration reduction are achieved; and the natural vibration period of a mass pendulum can be adjusted.

Description

technical field [0001] The invention relates to the technical field of vibration reduction, in particular to a suspension compound tuning vibration reduction device and method. Background technique [0002] Under the action of earthquake and wind load, the high-rise structure will vibrate, which seriously reduces the safety of the high-rise structure. Suspended mass pendulum damper is a relatively economical passive vibration reduction device for high-rise structures. Its outstanding advantage is that the swing direction of the mass pendulum depends entirely on the vibration direction of the structure. In practical applications, the mass pendulum can accurately impart vibration-reducing damping force along the vibration direction. [0003] However, traditional suspended mass pendulum dampers are mostly passive vibration dampers, which cannot dynamically adjust the natural vibration period and vibration damping force according to the service conditions of the structure and r...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/0215Y02E10/72
Inventor 邵国栋刘娟王聪庞继勇
Owner POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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