CN216306582U

CN216306582U - Magneto-rheological damper with limiting function based on permanent magnet

Info

Publication number: CN216306582U
Application number: CN202123058114.6U
Authority: CN
Inventors: 李向群; 孔伟明
Original assignee: ZHIXING S&T Ltd
Current assignee: ZHIXING S&T Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-04-15
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses a magnetorheological damper with a limiting function based on a permanent magnet, which comprises a damping shell, wherein one end of the damping shell is connected with a piston rod in a sliding manner, one end of the piston rod is fixedly provided with a piston, the outer surface of the piston is provided with a first mounting groove and a second mounting groove, the inner side of the first mounting groove is fixedly provided with a first spring, one end of the first spring is fixedly provided with a first compensation pad, and the first compensation pad is connected with the first mounting groove in a sliding manner. Through this design, under the effect of first mounting groove, first compensation pad, first spring, second mounting groove, second compensation pad, second spring, so that carry out sealed compensation to the piston, when piston surface wearing and tearing, under the effect of spring, promote the compensation pad, make the compensation pad laminate with magnetic current becomes the attenuator inner wall, and laminate the setting in turn at first compensation pad and second compensation pad, thereby avoided piston and damping shells inner wall junction to appear the problem of gas leakage.

Description

Magneto-rheological damper with limiting function based on permanent magnet

Technical Field

The utility model belongs to the technical field of dampers, and particularly relates to a magneto-rheological damper with a limiting function based on a permanent magnet.

Background

Magnetorheological dampers are devices that provide resistance to motion and dissipate the energy of motion. It is not a new technology to absorb energy and shock by damping, and various dampers or shock absorbers have been used for absorbing vibration and dissipating energy in the industries of aerospace, aviation, war industry, firearms, automobiles and the like. Various friction and other damping effects are known to damp free vibrations, which we call damping. While "special" elements placed on the structural system can provide resistance to movement, a device that dissipates the energy of movement, we refer to as a damper.

The existing magnetorheological damper is mature in technology, but when the magnetorheological damper is used, a piston rod in the magnetorheological damper pushes a piston to move back and forth under the action of pushing pressure, and in the process of continuous movement, the outer surface of the piston and the inner wall of the magnetorheological damper are abraded, so that the sealing effect of the piston is reduced, the precision of the magnetorheological damper is reduced, and the service life of the magnetorheological damper is shortened.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a magneto-rheological damper with a limiting function based on a permanent magnet, and solves the problems that piston sealing effect is reduced and the use precision of the magneto-rheological damper is reduced due to piston abrasion in the magneto-rheological damper.

In order to solve the technical problems, the utility model provides the following technical scheme: magnetorheological damper based on permanent magnet has limit function, including the damping casing, the one end sliding connection of damping casing has the piston rod, the fixed piston that is equipped with of one end of piston rod, first mounting groove, second mounting groove have been seted up to the surface of piston, the inboard of first mounting groove is fixed and is equipped with first spring, the fixed first compensation pad that is equipped with of one end of first spring, and first compensation pad and first mounting groove are sliding connection, the inboard of second mounting groove is fixed and is equipped with the second spring, the fixed second compensation pad that is equipped with of one end of second spring, and the second compensation pad is sliding connection with the second mounting groove.

As a preferred technical scheme of the present invention, an oil seal cover is disposed at one end of the damping housing, a spring clamp seat is fixedly disposed at one side of the oil seal cover, a gasket is disposed on an outer surface of the spring clamp seat, magnetorheological fluid and a damping spring are disposed at both ends of the piston, and a coil is embedded in an outer surface of a middle portion of the piston.

As a preferred technical solution of the present invention, the second compensation pad and the first compensation pad are both disposed in an arc shape, and the second compensation pad and the first compensation pad are disposed in a parallel and staggered manner.

As a preferred technical solution of the present invention, the first mounting groove and the second mounting groove are annularly arranged, and the first mounting groove and the second mounting groove have the same size.

As a preferred technical solution of the present invention, the second compensation pad and the second installation groove are disposed in a fitting manner, and the first installation groove and the first compensation pad are disposed in a fitting manner.

As a preferred technical scheme of the utility model, permanent magnets are arranged on the inner side of the spring clamping seat and the inner bottom of the damping shell.

As a preferred technical scheme of the utility model, the permanent magnet is arranged inside the magnetorheological fluid, and the magnetorheological fluid is arranged at both ends of the piston.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. through this design, under the effect of first mounting groove, first compensation pad, first spring, second mounting groove, second compensation pad, second spring, so that carry out sealed compensation to the piston, when piston surface wearing and tearing, under the effect of spring, promote the compensation pad, make the compensation pad laminate with magnetic current becomes the attenuator inner wall, and laminate the setting in turn at first compensation pad and second compensation pad, thereby avoided piston and damping shells inner wall junction to appear the problem of gas leakage.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of the structure of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic perspective view of a piston according to the present invention;

FIG. 4 is a schematic front view of the piston of the present invention;

fig. 5 is a sectional front view structure diagram of the piston of the present invention.

Wherein: 1. a damping housing; 2. a piston rod; 3. sealing the oil cover; 4. a spring clamp seat; 5. a gasket; 6. magnetorheological fluid; 7. a permanent magnet; 8. a damping spring; 9. a piston; 10. a first mounting groove; 11. a first compensation pad; 12. a first spring; 13. a second mounting groove; 14. a second compensation pad; 15. a second spring; 16. and a coil.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1 to 5, the magnetorheological damper with a limiting function based on the permanent magnet comprises a damping housing 1, wherein one end of the damping housing 1 is slidably connected with a piston rod 2, one end of the piston rod 2 is fixedly provided with a piston 9, the outer surface of the piston 9 is provided with a first mounting groove 10 and a second mounting groove 13, the inner side of the first mounting groove 10 is fixedly provided with a first spring 12, one end of the first spring 12 is fixedly provided with a first compensation pad 11, the first compensation pad 11 is slidably connected with the first mounting groove 10, the inner side of the second mounting groove 13 is fixedly provided with a second spring 15, one end of the second spring 15 is fixedly provided with a second compensation pad 14, and the second compensation pad 14 is slidably connected with the second mounting groove 13;

when the piston rod 2 moves, the piston 9 is pushed to move, so that the piston 9 is rubbed with the inner wall of the damping shell 1, when the piston 9 is worn, under the action of the elastic deformation of the second spring 15, the second spring 15 pushes the second compensation pad 14 to move, so that the second compensation pad 14 is attached to the inner wall of the damping shell 1, and under the action of the elastic deformation of the first spring 12, the first spring 12 pushes the first compensation pad 11 to move, so that the first compensation pad 11 is attached to the inner wall of the damping shell 1, the left and right sides of the piston 9 are compensated by the first and

second compensation pads

11 and 14, therefore, the comprehensive compensation operation of the piston 9 is realized, the sealing effect of the piston 9 is improved, and the problems that the sealing effect of the piston 9 is reduced and the use precision of the magnetorheological damper is reduced due to the abrasion of the piston 9 in the magnetorheological damper are solved.

In other embodiments, an oil seal cover 3 is arranged at one end of the damping shell 1, a spring clamp seat 4 is fixedly arranged at one side of the oil seal cover 3, a gasket 5 is arranged on the outer surface of the spring clamp seat 4, magnetorheological fluid 6 and a damping spring 8 are arranged at both ends of the piston 9, and a coil 16 is embedded in the outer surface of the middle of the piston 9.

In other embodiments, the second compensation pads 14 and the first compensation pads 11 are both disposed in an arc shape, and the second compensation pads 14 and the first compensation pads 11 are disposed in a parallel and staggered manner; through the parallel and staggered arrangement of the first compensation pads 11 and the second compensation pads 14, the first compensation pads 11 and the second compensation pads 14 are combined, so that the first compensation pads 11 and the second compensation pads 14 perform annular compensation operation on the piston 9.

In other embodiments, the first mounting groove 10 and the second mounting groove 13 are annularly arranged, and the first mounting groove 10 and the second mounting groove 13 have the same size; the outer surfaces of the first compensation pad 11 and the second compensation pad 14 and the outer surface of the piston 9 are always kept the same by the matching arrangement of the first compensation pad 11 and the second compensation pad 14 so as to compensate the piston 9.

In other embodiments, the second compensation pad 14 is disposed in a manner matching with the second installation groove 13, and the first installation groove 10 is disposed in a manner matching with the first compensation pad 11; the second compensation pad 14 is matched with the second installation groove 13, so that the stability of the second compensation pad 14 during moving is improved.

In other embodiments, the permanent magnets 7 are arranged on the inner side of the spring clamping seat 4 and the inner bottom of the damping shell 1;

in other embodiments, the permanent magnet 7 is arranged inside the magnetorheological fluid 6, and the magnetorheological fluid 6 is arranged at both ends of the piston 9; the permanent magnet 7 is arranged, so that the magnet with higher remanence inside the magnetorheological fluid 6 can be kept for a long time in an open circuit state.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Magnetorheological damper based on permanent magnet has limit function, including damping casing (1), its characterized in that: one end sliding connection of damping casing (1) has piston rod (2), the fixed piston (9) that is equipped with of one end of piston rod (2), first mounting groove (10), second mounting groove (13) have been seted up to the surface of piston (9), the inboard of first mounting groove (10) is fixed and is equipped with first spring (12), the one end of first spring (12) is fixed and is equipped with first compensation pad (11), and first compensation pad (11) are sliding connection with first mounting groove (10), the inboard of second mounting groove (13) is fixed and is equipped with second spring (15), the one end of second spring (15) is fixed and is equipped with second compensation pad (14), and second compensation pad (14) and second mounting groove (13) are sliding connection.

2. The magnetorheological damper with the limit function based on the permanent magnet according to claim 1, wherein: one end of the damping shell (1) is provided with an oil sealing cover (3), one side of the oil sealing cover (3) is fixedly provided with a spring clamping seat (4), the outer surface of the spring clamping seat (4) is provided with a gasket (5), two ends of the piston (9) are respectively provided with magnetorheological fluid (6) and a damping spring (8), and the outer surface of the middle part of the piston (9) is embedded with a coil (16).

3. The magnetorheological damper with the limit function based on the permanent magnet according to claim 1, wherein: the second compensation pads (14) and the first compensation pads (11) are both arranged in an arc shape, and the second compensation pads (14) and the first compensation pads (11) are arranged in a parallel and staggered mode.

4. The magnetorheological damper with the limit function based on the permanent magnet according to claim 1, wherein: the first mounting groove (10) and the second mounting groove (13) are arranged in an annular mode, and the first mounting groove (10) and the second mounting groove (13) are the same in size.

5. The magnetorheological damper with the limit function based on the permanent magnet according to claim 1, wherein: the second compensation pad (14) and the second mounting groove (13) are arranged in a matched mode, and the first mounting groove (10) and the first compensation pad (11) are arranged in a matched mode.

6. The magnetorheological damper with the limit function based on the permanent magnet according to claim 2, wherein: and permanent magnets (7) are arranged on the inner side of the spring clamping seat (4) and the inner bottom of the damping shell (1).

7. The magnetorheological damper with the limit function based on the permanent magnet according to claim 6, wherein: the permanent magnet (7) is arranged inside the magnetorheological fluid (6), and the magnetorheological fluid (6) is arranged at the two ends of the piston (9).