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Spherical hinge type ultralow frequency universal vibration tuning mass damper

A tuned mass damping and ultra-low frequency technology, which is applied in the field of tuned vibration reduction, can solve the problems of high installation cost and large space occupation, and achieve the effects of small stiffness, adjustable position, and reduced frictional resistance torque

Pending Publication Date: 2019-04-05
HUNAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the existing pendulum TMD, which occupy a large space and have high installation costs, and provide a spherical hinge type ultra-low frequency universal vibration tuned mass damper which is easy to install

Method used

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  • Spherical hinge type ultralow frequency universal vibration tuning mass damper
  • Spherical hinge type ultralow frequency universal vibration tuning mass damper
  • Spherical hinge type ultralow frequency universal vibration tuning mass damper

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] see Figure 5 , Image 6 , Figure 7 , the spherical hinge type ultra-low frequency universal vibration tuned mass damper (abbreviation: HLTMD) of this embodiment is supported by 4 vertical columns 1, and the 4 columns 1 are evenly fixed on the bottom plate 2 along the circumferential line, and the bottom plate 2 is fixed On the interlayer board of the tower tube. A spherical hinge is installed at the center of the base plate 2; as can be seen from the figure, the spherical hinge includes a hinge seat 3 fixed to the center of the circumference of the column 1 on the base plate 2, and the center of the hinge seat 3 is provided with a spherical groove. A hinge center ball 4 is correspondingly installed in the groove, and the upper part of the hinge center ball 4 is affixed to the lower end of the vertical center swing rod 5; a drag red...

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Abstract

The invention discloses a spherical hinge type ultralow frequency universal vibration tuning mass damper. The damper is characterized by comprising a bottom plate installed on the damper, several vertical columns are uniformly fixed to the upper surface of the bottom plate along the circumference line, and a spherical hinge is installed on the bottom plate; the spherical hinge comprises a hinge base fixedly connected to the circumference center of the bottom plate, a spherical groove is formed in the center of the hinge base, a hinge center ball is correspondingly installed in the spherical groove, and the upper portion of the hinge center ball is fixedly connected with the bottom of a vertical center oscillating bar; a mass block is arranged on the top of the center oscillating bar; mainsprings correspondingly connected with the columns are arranged on the lower portion of the oscillating bar in the same plane to keep the center oscillating bar vertical. The universal oscillating characteristic of the center oscillating bar in the spherical hinge is utilized, horizontal vibration of the damper is inhibited, theintrinsic frequency can be adjusted, under the circumstance that the oscillating rod is shorter, the ultralow frequency can be easily achieved, installing is convenient, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of tuning vibration reduction, and in particular relates to a spherical hinge type ultra-low frequency universal vibration tuning mass damper. Background technique [0002] At present, the height of the wind turbine tower is over 140m, while the diameter of the tower is only about 4m. The wind turbine tower is prone to large vibrations under the action of strong winds. Strong vibrations can easily cause fatigue damage to the tower, fatigue cracking of the concrete foundation, and power generation. Broken machine spindle and many other problems. [0003] Since the main vibration form of the fan tower is bending vibration, its arbitrary cross-section is circular, the vibration direction is horizontal, and the bending direction of the tower changes continuously with the change of wind direction. like figure 1 Shown is a cantilever tuned damper (TMD), and the lower part must be an elastic rod. Due to the probl...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D31/00F16F15/04F16F15/02F16F15/28F16F15/22
CPCF16F15/022F16F15/04F16F15/22F16F15/28E02D27/425E02D31/00
Inventor 禹见达段志博杨善斌孙洪鑫彭剑禹蒲阳
Owner HUNAN UNIV OF SCI & TECH
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