阅读说明：本技术 一种适用有限空间的旋转剪切式磁流变隔减振方法 (Rotary shearing type magneto-rheological isolation vibration reduction method suitable for limited space ) 是由 郭迎庆 谢文翰 张捷 徐赵东 于 2020-05-28 设计创作，主要内容包括：本发明公开了一种适用有限空间的旋转剪切式磁流变隔减振方法,基于一旋转剪切式磁流变隔减振装置,装置包括双叉主旋臂,所述双叉主旋臂的一端具有左、右对称设置的两个由导磁材料制成的旋转限位套筒,另一端具有与装置连接的双叉臂；副旋臂,包括主副连接端C和装置安装端D,其中,所述主副连接端C采用导磁材料与所述双叉主旋臂一端的旋转限位套筒连接；磁流变弹性体,固定连接在双叉主旋臂一端所述旋转限位套筒内壁与副旋臂之间；磁感线圈,设置在双叉主旋臂一端所述旋转限位套筒内壁与所述磁流变弹性体之间。该方法将磁流变弹性体的横向剪切运动方式改为了旋转剪切运动方式,使装置的横向结构长度更短,更为节省空间。(The invention discloses a rotary shearing type magneto-rheological isolation and vibration reduction method applicable to a limited space, which is based on a rotary shearing type magneto-rheological isolation and vibration reduction device, wherein the device comprises a double-fork main rotating arm, one end of the double-fork main rotating arm is provided with two rotary limiting sleeves which are symmetrically arranged left and right and are made of magnetic conductive materials, and the other end of the double-fork main rotating arm is provided with a double-fork arm connected with the device; the auxiliary rotating arm comprises a main and auxiliary connecting end C and a device mounting end D, wherein the main and auxiliary connecting end C is connected with a rotation limiting sleeve at one end of the bifurcate main rotating arm by adopting a magnetic conductive material; the magnetorheological elastomer is fixedly connected between the inner wall of the rotary limiting sleeve at one end of the double-fork main rotating arm and the auxiliary rotating arm; and the magnetic induction coil is arranged between the inner wall of the rotary limiting sleeve at one end of the bifurcate main spiral arm and the magnetorheological elastomer. The method changes the transverse shearing motion mode of the magnetorheological elastomer into the rotary shearing motion mode, so that the transverse structure of the device is shorter in length, and the space is saved.)

1. A rotary shearing type magneto-rheological isolation and vibration reduction method suitable for a limited space is based on a rotary shearing type magneto-rheological isolation and vibration reduction device, and the device comprises:

the double-fork main rotating arm is provided with two rotation limiting sleeves which are symmetrically arranged at the left and the right and are made of magnetic conductive materials at one end, and is provided with a double-fork arm connected with the device at the other end;

the auxiliary rotating arm is provided with a main and auxiliary connecting end C at one end and a device mounting end D at the other end, wherein the main and auxiliary connecting end C is made of a magnetic conductive material, the left side and the right side of the main and auxiliary connecting end C are provided with symmetrically arranged rotation limiting bosses, and when the auxiliary rotating arm is connected, the rotation limiting bosses on the two sides of the main and auxiliary connecting end C on the auxiliary rotating arm are embedded into rotation limiting sleeves on the left side and the right side of the bifurcate main rotating arm to realize relative rotation motion;

the magnetorheological elastomer is bonded by a rubber-metal adhesive or vulcanized at high temperature and high pressure and is connected between the inner wall of the rotary limiting sleeve at the end of the double-fork main radial arm and the auxiliary radial arm;

the magnetic induction coil is arranged between the inner wall of the rotary limiting sleeve at one end of the bifurcate main rotating arm and the magnetorheological elastomer;

the magnetorheological vibration damping controller is arranged outside the device and is connected with the magnetic induction coil through a lead;

the method is characterized in that:

the rotary limiting sleeves on the left side and the right side of the double-fork main radial arm are sleeved with the rotary limiting bosses on the two sides of the auxiliary radial arm, so that the double-fork main radial arm and the auxiliary radial arm realize relative rotary motion;

when the double-fork main radial arm and the auxiliary radial arm rotate relatively, the magnetorheological elastomer arranged between the auxiliary radial arm and the rotation limiting sleeve is sheared and deformed to realize vibration isolation and reduction through the bonding of a rubber-metal adhesive or high-temperature and high-pressure vulcanization;

the intensity of the magnetic field is controlled by changing the current in the magnetic induction coil, so that the rigidity of the magnetorheological elastomer is changed along with the actual requirement of vibration isolation and reduction.

2. The rotary shearing type magnetorheological isolating and damping method applicable to the limited space according to claim 1, wherein the rotary limiting sleeve on the bifurcate main radial arm and the end of the bifurcate arm connected with the device are arranged at an angle of 135 degrees, and the rotary limiting sleeve is provided with a positioning and mounting hole for the magnetorheological elastomer; the end of the double-fork arm connected with the device is provided with a device mounting hole.

3. The limited space-adaptive rotary shear type magnetorheological vibration isolating and damping method according to claim 1, further comprising a thermal insulation material layer arranged between the magnetic induction coil and the magnetorheological elastomer for isolating heat generated when the magnetic induction coil is electrified.

4. The rotary shear type magnetorheological isolating and damping method suitable for the limited space according to claim 1, wherein a limiting device for preventing the motion stroke of the auxiliary radial arm from being too large is arranged in the middle of the bifurcate main radial arm.

5. The rotary shear type magnetorheological isolating and damping method for limited space as claimed in claim 4, wherein the limiting device is a limiting boss, and the limiting boss is bonded by a rubber-metal adhesive or vulcanized and connected with a limiter made of an elastic material at high temperature and high pressure.

6. The limited space-adaptive rotary shear-type magnetorheological vibration damping method according to claim 1, wherein the magnetorheological elastomer is a rubber body doped with ferromagnetic particles.

Technical Field

The invention relates to a rotary shearing type magnetorheological vibration isolating and damping method suitable for a limited space, and belongs to the field of vibration isolating and damping of civil engineering.

Background

The magneto-rheological elastomer vibration isolating and damping device is a semi-active vibration isolating and damping device applied to the fields of civil structures, mechanical structures, aerospace and the like, and has the main principle that the stepless adjustment of the magnetic characteristics of the magneto-rheological elastomer is realized according to the controllable characteristic that the performance parameters of the magneto-rheological elastomer can change along with the change of the intensity of an external magnetic field, so that the magneto-rheological elastomer vibration isolating and damping device can show different damping forces or rigidities, and the aim of reducing the influence of external vibration on a controlled system is fulfilled.

The traditional shear type magnetorheological elastomer vibration isolating and damping device is generally in a piston extrusion type, vibration isolating and damping are realized through transverse extrusion movement of a magnetorheological elastomer, however, the mode is large in size and is not suitable for vibration isolating and damping in a small space.

Disclosure of Invention

The purpose of the invention is as follows: compared with the traditional shearing type magnetorheological elastomer vibration isolating and damping device, the device changes the transverse shearing motion mode of the magnetorheological elastomer into the rotary shearing motion mode, so that the transverse structure length of the device is shorter, the space is saved, and the device is a vibration isolating and damping device suitable for being arranged in the limited space. Compared with the traditional extrusion type magnetorheological elastomer vibration isolating and damping device, the device has the advantages that the stroke of the vibration isolating and damping device is longer, and the better vibration isolating and damping effect is achieved.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a rotary shearing type magneto-rheological isolation and vibration reduction method suitable for a limited space is based on a rotary shearing type magneto-rheological isolation and vibration reduction device, and the device comprises:

the double-fork main rotating arm is provided with two rotation limiting sleeves which are symmetrically arranged at the left and the right and are made of magnetic conductive materials at one end, and is provided with a double-fork arm connected with the device at the other end;

the auxiliary rotating arm is provided with a main and auxiliary connecting end C at one end and a device mounting end D at the other end, wherein the main and auxiliary connecting end C is made of a magnetic conductive material, the left side and the right side of the main and auxiliary connecting end C are provided with symmetrically arranged rotation limiting bosses, and when the auxiliary rotating arm is connected, the rotation limiting bosses on the two sides of the main and auxiliary connecting end C on the auxiliary rotating arm are embedded into rotation limiting sleeves on the left side and the right side of the bifurcate main rotating arm to realize relative rotation motion;

the magnetorheological elastomer is bonded by a rubber-metal adhesive or vulcanized at high temperature and high pressure and is connected between the inner wall of the rotary limiting sleeve at the end of the double-fork main radial arm and the auxiliary radial arm;

the magnetic induction coil is arranged between the inner wall of the rotary limiting sleeve at one end of the bifurcate main rotating arm and the magnetorheological elastomer;

the magnetorheological vibration damping controller is arranged outside the device and is connected with the magnetic induction coil through a lead;

the rotary limiting sleeves on the left side and the right side of the double-fork main radial arm are sleeved with the rotary limiting bosses on the two sides of the auxiliary radial arm, so that the double-fork main radial arm and the auxiliary radial arm realize relative rotary motion;

when the double-fork main radial arm and the auxiliary radial arm rotate relatively, the magnetorheological elastomer arranged between the auxiliary radial arm and the rotation limiting sleeve is sheared and deformed to realize vibration isolation and reduction through the bonding of a rubber-metal adhesive or high-temperature and high-pressure vulcanization;

the intensity of the magnetic field is controlled by changing the current in the magnetic induction coil, so that the rigidity of the magnetorheological elastomer is changed along with the actual requirement of vibration isolation and reduction.

The rotary limiting sleeve on the double-fork main rotating arm and the end of the double-fork arm connected with the device are arranged at an angle of 135 degrees, and the rotary limiting sleeve is provided with a magnetorheological elastomer positioning and mounting hole; the end of the double-fork arm connected with the device is provided with a device mounting hole.

The magneto-rheological elastomer is characterized by also comprising a heat insulation material layer, wherein the heat insulation material layer is arranged between the magnetic induction coil and the magneto-rheological elastomer and is used for insulating heat generated when the magnetic induction coil is electrified.

And the middle part of the double-fork main radial arm is provided with a limiting device for preventing the motion stroke of the auxiliary radial arm from being overlarge.

The limiting device is a limiting boss, and a limiter made of elastic materials is bonded on the limiting boss by using a rubber-metal adhesive or vulcanized and connected at high temperature and high pressure.

The magnetorheological elastomer is a rubber body doped with ferromagnetic particles.

Has the advantages that:

compared with the prior art, the rotary shearing type magnetorheological isolation and vibration reduction method applicable to the limited space can provide the same vibration reduction effect as that of a common shearing type magnetorheological elastomer isolation and vibration reduction device under the condition of limited installation space.

Drawings

FIG. 1 is a schematic diagram of a double-fork main swing arm of a rotary shearing type magnetorheological isolating and damping device applicable to a limited space according to the present invention;

wherein, 1, rotating the limit sleeve; 2. a magnetorheological elastomer positioning mounting hole; 3. a stopper made of an elastic material; 4. a limiting boss; 5. a device mounting hole; 6. a magnetic induction coil leading-out hole; 7. a magnetic induction coil; a. Rotating the double fork arms at the end of the limiting sleeve; B. a device mounting end double yoke;

FIG. 2 is a schematic diagram of an auxiliary radial arm of the rotary shearing type magnetorheological isolating and damping device applicable to a limited space according to the present invention;

8. rotating the limit boss; 9. a device mounting hole; C. the main and auxiliary connecting ends; D. a device mounting end;

FIG. 3 is a cross-sectional view of the joint between the bifurcate primary radial arm and the secondary radial arm;

10. a left side rotation limiting sleeve; 11. a right-side rotation limiting sleeve; 12. an auxiliary swing arm; 13. a magnetorheological elastomer; 14. an insulating layer.

FIG. 4 is a schematic diagram of an assembly of the rotary shear magnetorheological isolation and vibration damping device of the present invention suitable for use in confined spaces.

Detailed Description

The following describes an embodiment of the present invention in detail with reference to the accompanying drawings, wherein the embodiment is adapted to a space-limited rotary shear type magnetorheological isolation damping method.

A rotary shearing type magneto-rheological isolation and vibration damping method suitable for a limited space is based on a rotary shearing type magneto-rheological isolation and vibration damping device, as shown in figure 1, and the device comprises:

the double-fork main rotating arm is divided into a rotary limiting sleeve end double-fork arm A and a device mounting end double-fork arm B which are made of magnetic materials, the rotary limiting sleeve end double-fork arm A and the device mounting end double-fork arm B are arranged at an angle of 135 degrees, and a magnetorheological elastomer positioning and mounting hole 2 is formed in the rotary limiting sleeve end double-fork arm A;

the stopper 3 made of elastic material is connected to the limit boss 4 by rubber-metal adhesive bonding or high-temperature high-pressure vulcanization;

the double-fork arm B at the device mounting end is provided with a device mounting hole 5, and the device mounting hole 5 is a through hole and is used for mounting the device on a controlled object;

the magnetic induction coil 7 is led out from the magnetic induction coil leading-out hole 6 and is connected with the magnetorheological damping controller device.

As shown in fig. 2, the auxiliary swing arm is divided into a main and auxiliary connecting end C and a device mounting end D, the main and auxiliary connecting end C of the auxiliary swing arm is made of a magnetic conductive material, and two sides of the main and auxiliary connecting end C of the auxiliary swing arm are provided with rotation limiting bosses 8; the device mounting hole 9 is a through hole for mounting the device on the object to be controlled.

As shown in fig. 3, a magnetorheological elastomer 13 is arranged between the left rotation limiting sleeve 10, the right rotation limiting sleeve 11 and the auxiliary radial arm 12, and is bonded by a rubber-metal adhesive or connected by high-temperature and high-pressure vulcanization to form a structure of "left rotation limiting sleeve-magnetorheological elastomer-auxiliary radial arm-magnetorheological elastomer-right rotation limiting sleeve", a magnetic induction coil 7 is arranged in the rotation limiting sleeve, and a magnetic induction coil leading-out hole 6 is used for leading out the magnetic induction coil 7 to the outside of the device to be connected with a magnetorheological vibration damping controller device.

Further, a heat insulation layer 14 is arranged between the magnetic induction coil and the magnetorheological elastomer and used for isolating heat generated when the magnetic induction coil is electrified and preventing performance reduction caused by heating of the magnetorheological elastomer.

Fig. 4 is a schematic diagram of an assembly of the present invention for a space-limited rotary shear magnetorheological vibration damper.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the invention are intended to be covered by the scope of the present invention.