Electromagnetic eddy rotating damper

A rotary damper and electromagnetic eddy current technology, which is applied in the field of structural shock absorption, can solve the problems of high rotation speed of the rotating body of the rotary damper, damage to the main structure damper, etc., achieve suitable matching effects, solve the mismatch between stiffness and structural stiffness, The effect of increased shock resistance

Inactive Publication Date: 2017-02-15
ZHEJIANG JIANKE DAMPING SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electromagnetic eddy current rotary damper to solve the technical problem that the rotational speed of the rotating body of the rotary damper is too high under large excitation, which may cause damage to the main structure and the damper

Method used

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Embodiment Construction

[0018] Next, the present invention will be described in further detail in conjunction with the accompanying drawings

[0019] Such as Figure 1-3 As shown, the present invention discloses an electromagnetic eddy current rotary damper, comprising an outer cylinder 1, an inner cylinder 2 and a lead screw 3, wherein the inner cylinder 2 is located inside the outer cylinder 1; the outer peripheral surface of the lead screw 2 is mated and connected with Lead screw nut 4, the outer peripheral surface of the leading screw nut 4 is fixedly connected with the inner wall of the inner cylinder 2, and the outer peripheral surface of the inner cylinder 2 is provided with a coil 5; the inner wall of the outer cylinder 1 is fixedly provided with an annular permanent magnet 6, and the annular permanent magnet 6 is set corresponding to the coil 5;

[0020] A thrust bearing 7 is arranged between the outer cylinder 1 and the screw nut 4, a roller bearing 8 is arranged between the outer cylinder...

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Abstract

The invention belongs to the field of structural vibration reduction, and in particular, relates to an electromagnetic eddy rotating damper. The electromagnetic eddy rotating damper comprises an outer cylinder, an inner cylinder and a lead screw, wherein the inner cylinder is positioned in the outer cylinder; the outer peripheral surface of the lead screw is matched and connected with a screw nut; the outer peripheral surface of the lead screw is fixedly connected with the inner wall of the inner cylinder; a coil is arranged on the outer peripheral surface of the inner cylinder; an annular permanent magnet is fixed on the inner wall of the outer cylinder, and is corresponding to the coil; a thrust bearing is arranged between the outer cylinder and the screw nut; and a roller bearing is arranged between the outer cylinder and the inner cylinder. The electromagnetic eddy rotating damper can effectively consume the energy of earthquake and wind vibration; in particular, under major earthquake, the damper is more obvious in energy consumption; and the damper is small in size and various in mounting forms.

Description

technical field [0001] The invention belongs to the field of structural damping, and in particular relates to an electromagnetic eddy current rotary damper. Background technique [0002] In the construction of modern buildings, bridges, etc., the seismic capacity of structures has become a key issue considered by designers. As technology develops, dampers are playing an important role. In recent years, electromagnetic eddy current technology has also been applied to the damper. The basic principle is: the conductor cuts the magnetic force line in the magnetic field, and the induced current will be generated in the conductor. According to Lenz's law, the effect of the induced current is always against the induction. Due to the current, this will hinder the movement of the conductor in the magnetic field, that is, electromagnetic damping. The rotary damper designed based on the principle of the ball screw nut pair, after being excited by earthquakes, wind vibrations, etc., t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F6/00F16F15/03E04B1/98E04H9/02E01D19/00
CPCE01D19/00E04B1/98E04H9/0215E04H9/023F16F6/00F16F15/035
Inventor 张瑞甫刘召鹏郭华东吴振宇许晴峰
Owner ZHEJIANG JIANKE DAMPING SCI & TECH CO LTD
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