CN102635664B

CN102635664B - Oscillating type magnetorheological damper

Info

Publication number: CN102635664B
Application number: CN 201210116602
Authority: CN
Inventors: 谭和平; 谢宁; 刘强; 谭晓婧
Original assignee: 谢宁
Priority date: 2012-04-20
Filing date: 2012-04-20
Publication date: 2013-09-18
Anticipated expiration: 2032-04-20
Also published as: CN102635664A

Abstract

The invention discloses an oscillating type magnetorheological damper which is formed by the means that a damping rod is arranged in a damping pipe, wherein the damping pipe is combined and fixed into a whole by the means that N+1 ring-shaped damping fins and N spacer rings are concentrically overlapped with one another one by one in the plane; each ring-shaped damping fin consists of a ring-shaped electromagnet and magnetorheological elastomers, wherein at least three pairs of magnetic poles of the ring-shaped electromagnet are uniformly distributed at the inner periphery, and the nagnetioreological elastomers with the same thickness are respectively fixed on the end surface of each magnetic pole of the ring-shaped electromagnet; each spacer ring is made from non-magnetic permeability material, the outer diameters of the spacer rings are as the same as those of the ring-shaped damping fins, and the inner diameters of the spacer rings are not less than those of the magnetic poles of the ring-shaped electromagnets; and the damping rod is in the shape of a cylinder which is made from high-magnetic permeability material, and the length of the damping rod is not less than that of the damping pipe.

Description

A kind of rock type MR damper

Technical field

The invention belongs to a kind of damper, be specifically related to a kind of rock type MR damper.

Background technique

Shaking is a kind of motion of complexity, people normally adopt a plurality of dampers to make up to be its vibration damping, but this will make vibration damping structure become very complicated, so having designed again, people independently are used for the three-dimensional damper that shakes, as: Chinese patent application number be: 2010105878118 " rock type MR damper ", although this MR damper can be for the vibration damping occasion of shaking, because magnetic flow liquid wherein all can cause this MR damper performance decrease or inefficacy in case the sedimentation of leakage or magnetic flow liquid takes place.

Summary of the invention

In order to overcome the defective of existing rock type MR damper, the present invention proposes a kind of rock type MR damper.

Technological scheme of the present invention is as follows: a kind of rock type MR damper, be installed in the damp tube by damper rod and constitute, wherein: damp tube is by N+1 piece annular damping fin and N interblock spacer ring, is fixed as one after the mode that changes mutually by concentric also plane by an annular damping fin and an interblock spacer ring makes up; The annular damping fin is by the ring electromagnet that is evenly equipped with at least three pairs of magnetic poles at inner circumference, and fixed the identical magnetic rheology elastic body of a layer thickness and constitute at the end face of each magnetic pole of ring electromagnet; Spacer ring is made of non-magnet_conductible material, and the external diameter of spacer ring is identical with the external diameter of annular damping fin, and the internal diameter of spacer ring is not less than the internal diameter of ring electromagnet magnetic pole; Damper rod is the cylinder bodily form that is made of high permeability material, and the length of damper rod is not less than the length of damp tube, in the external diameter of damper rod and the damp tube on the ring electromagnet magnetic pole end face internal diameter of magnetic rheology elastic body identical; Damper rod is installed in the damp tube, and stretch out in damp tube at the two ends of damper rod, and the magnetic rheology elastic body on the ring electromagnet magnetic pole end face is fixed in the excircle of damper rod and the damp tube.

Function of the present invention be achieved in that because of rock type MR damper be damp tube by N+1 piece annular damping fin and N interblock spacer ring, after making up, the mode that changes mutually by concentric and plane by an annular damping fin and an interblock spacer ring is fixed as one, and damper rod is installed in the damp tube, and the magnetic rheology elastic body in the excircle of damper rod and the damp tube on the ring electromagnet magnetic pole strength is fixed; So, when an end of the damper rod of rock type MR damper shakes to certain direction, can make damper rod that integral body takes place in damp tube shakes, damper rod shaking in damp tube will make the magnetic rheology elastic body between damper rod excircle and the ring electromagnet magnetic pole strength deform, a part that makes the magnetic rheology elastic body on the ring electromagnet magnetic pole end face is compressed and another part is stretched, when ring electromagnet is not switched on, ring electromagnet does not generate an electromagnetic field, just there is not the magnetic line of force to pass through magnetic rheology elastic body between each magnetic pole end face of ring electromagnet and the damper rod excircle yet, therefore, the elasticity of the magnetic rheology elastic body on each magnetic pole end face of ring electromagnet is less, and an end that makes rock type MR damper damper rod suffered damping force when shaking to certain direction is less;

After the ring electromagnet energising, ring electromagnet will generate an electromagnetic field, be the cylinder bodily form that is constituted by high permeability material because of damper rod, so, the magnetic line of force that this electromagnetic field produces will pass through each magnetic pole end face of ring electromagnet, magnetic rheology elastic body and damper rod and form closed magnetic circuit, make the ferromagnetic particle in the magnetic rheology elastic body on each magnetic pole end face of electromagnet form chain or column aggregated structure and make its elasticity higher at magnetic direction, an end that makes damper rod suffered damping force when shaking to certain direction is bigger.

Enter size of current in the ring electromagnet by adjustment, can adjust the electromagnetic field intensity that ring electromagnet produces, make the elasticity size of the magnetic rheology elastic body on each the magnetic pole end face of ring electromagnet that is in the closed magnetic circuit obtain adjusting, thereby the damping force that makes rock type MR damper obtains adjusting, compare with existing rock type MR damper, not only solved the leakage problem of magnetic flow liquid because of a kind of rock type MR damper, and can regulate separately by the electric current that adjusting enters each ring electromagnet because of the elasticity of the magnetic rheology elastic body on each magnetic pole end face of ring electromagnet, the adjusting that makes a kind of rock type MR damper damping force is more flexibly and performance is better.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is a kind of structural representation of spacer ring among the present invention.

Fig. 4 is a kind of structural representation of damping fin among the present invention.

Fig. 5 is the sectional view of Fig. 4.

Fig. 6 and Fig. 7 are work schematic representation of the present invention, and the dotted line among the figure is the magnetic line of force.

Embodiment

Describe structure of the present invention in detail below in conjunction with accompanying drawing:

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, this is a kind of concrete structure of the present invention, a kind of rock type MR damper, be installed in the damp tube 2 by damper rod 6 and constitute, wherein: damp tube 2 is by 4

annular damping fins

1 and 3 interblock spacer rings 5, is fixed as one after the mode that changes mutually by concentric and plane by an annular damping fin 1 and an interblock spacer ring 5 makes up; Annular damping fin 5 is by be evenly equipped with four ring electromagnets 8 to (eight) magnetic pole at inner circumference, and the end face at each magnetic pole of ring electromagnet 8 has been fixed the identical magnetic rheology elastic body 4 of a layer thickness, is wound with field coil 3(and sees for details on each magnetic pole: Fig. 4 and Fig. 5) and constitute; Spacer ring 5 is made of non-magnet_conductible material, and the external diameter of spacer ring 5 is identical with the external diameter of annular damping fin 1, and the internal diameter that the internal diameter of spacer ring 5 is not less than ring electromagnet 8 magnetic poles (sees for details: Fig. 3); Damper rod 6 is the cylinder bodily forms that are made of high permeability material, and the length of damper rod 6 is not less than the length of damp tube 2, in the external diameter of damper rod 6 and the damp tube 2 on the annular electromagnetism 8 magnetic pole end faces internal diameter of magnetic rheology elastic body 4 identical; Damper rod 6 is installed in the damp tube 2, and stretch out from damp tube 2 at the two ends of damper rod 6, and the magnetic rheology elastic body 4 on the ring electromagnet 8 magnetic pole end faces is adhesively fixed in the excircle of damper rod 6 and the damp tube 2.

Come a kind of rock type MR damper of the present invention is further described in conjunction with figure Fig. 6 and Fig. 7 now: each field coil 3 of each annular damping fin 1 is connected with controller 7 by lighting outlet; When the upper end of the damper rod 6 of rock type MR damper is shaken to the right, damper rod 6 is shaken in damp tube 2, when the lower end of damper rod 6 is shaken left if the upper end of damper rod 6 is shaken to the right, to the magnetic rheology elastic body 4 between damper rod 6 excircles and the ring electromagnet 8 magnetic pole end faces be deformed, the right-hand component of magnetic rheology elastic body 4 of ring electromagnet 8 magnetic pole end faces that makes damp tube 2 upper ends is compressed and left-hand component is stretched, and the right-hand component of the magnetic rheology elastic body 4 of the ring electromagnet 8 magnetic pole end faces of damp tube 2 lower ends is stretched and left-hand component is compressed; At controller 7 not during ring electromagnet 8 output currents in the damp tube 2, ring electromagnet 8 does not generate an electromagnetic field, just there is not the magnetic line of force to pass through magnetic rheology elastic body 4 between ring electromagnet 8 each magnetic pole end face and damper rod 6 excircles yet, therefore, the elasticity of the magnetic rheology elastic body 4 on ring electromagnet 8 each magnetic pole end face is less, and damping force suffered when the upper end of rock type MR damper damper rod 6 is shaken to the right is less;

Behind controller 7 each ring electromagnet 8 output current in the damp tube 2, each ring electromagnet 8 will generate an electromagnetic field, are the cylinder bodily forms that constituted by high permeability material because of damper rod 6, so, the magnetic line of force that this electromagnetic field produces will pass through each ring electromagnet 2 each magnetic pole end face, magnetic rheology elastic body 4 and damper rod 6 form closed magnetic circuit, make the ferromagnetic particle in the magnetic rheology elastic body 4 on each ring electromagnet 8 each magnetic pole end face form chain or column aggregated structure and make its elasticity higher at magnetic direction, damping force suffered when the upper end of damper rod 6 is shaken to the right is bigger; Adjust the size of each ring electromagnet 8 output currents of controller 7 in the damp tube 2, can adjust the elasticity size of the magnetic rheology elastic body 4 on ring electromagnet 8 each magnetic pole end face, damping force size suffered when the upper end of damper rod 6 is shaken to the right is controlled.

Situation when a kind of upper end of damper rod 6 of rock type MR damper is shaken to either direction is similar with it, repeats no more herein.

Claims

1. rock type MR damper, be to be installed in the damp tube by damper rod to constitute, it is characterized in that: described damp tube is by N+1 piece annular damping fin and N interblock spacer ring, is fixed as one after the mode that changes mutually by concentric also plane by an annular damping fin and an interblock spacer ring makes up; Described annular damping fin is by the ring electromagnet that is evenly equipped with at least three pairs of magnetic poles at inner circumference, and has fixed the identical magnetic rheology elastic body of a layer thickness and constitute at the end face of each magnetic pole of ring electromagnet; Described spacer ring is made of non-magnet_conductible material, and the external diameter of spacer ring is identical with the external diameter of annular damping fin, and the internal diameter of spacer ring is not less than the internal diameter of ring electromagnet magnetic pole; Described damper rod is the cylinder bodily form that is made of high permeability material, and the length of damper rod is not less than the length of damp tube; Described damper rod is installed in the damp tube, and stretch out in damp tube at the two ends of damper rod, and the magnetic rheology elastic body on the ring electromagnet magnetic pole end face is fixed in the excircle of damper rod and the damp tube.