CN114251407A - O-shaped rod type anti-precipitation magnetorheological damper - Google Patents
O-shaped rod type anti-precipitation magnetorheological damper Download PDFInfo
- Publication number
- CN114251407A CN114251407A CN202111367027.0A CN202111367027A CN114251407A CN 114251407 A CN114251407 A CN 114251407A CN 202111367027 A CN202111367027 A CN 202111367027A CN 114251407 A CN114251407 A CN 114251407A
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- CN
- China
- Prior art keywords
- groove
- sealing ring
- piston rod
- magnetorheological damper
- cylinder body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000001556 precipitation Methods 0.000 title claims description 12
- 238000013016 damping Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 44
- 239000012530 fluid Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims 1
- 239000006249 magnetic particle Substances 0.000 abstract description 10
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Abstract
The invention aims to provide an O-shaped rod type anti-settling magnetorheological damper, which comprises a left end cover, a piston rod, a cylinder body, a propeller and a piston head; the piston rod on be equipped with the direction and lead to the groove, be equipped with the cylinder on the paddle of screw for the piston rod is through the crank slide bar mechanism between direction groove and the cylinder when doing reciprocating motion, thereby drives the screw and is rotary motion, reaches the screw and to the stirring of magnetorheological suspensions, realizes the even degree of magnetic particle in the magnetorheological suspensions, makes the damping force of attenuator effectively improve, the assembly spare is simple in whole structure, stability is higher. The O-shaped rod type anti-settling magnetorheological damper device has the characteristics of high-efficiency prevention of magnetic particle settling, simple structure and high practicability.
Description
Technical Field
The invention belongs to the field of mechanical engineering vibration reduction, and particularly relates to an O-shaped rod type anti-settling magnetorheological damper.
Background
In the existing cylinder type magnetorheological damper, there are two methods for improving the precipitation: one is to reduce the diameter of the magnetic particles in the magnetorheological fluid or add a surfactant in the magnetorheological fluid, but the magnetorheological fluid with smaller diameter of the magnetic particles is expensive and not high in practicability; another chinese patent CN107725663A proposes an anti-settling magnetorheological fluid damper, which adds a permanent magnet to make the magnetorheological fluid change the stress state of the magnetic particles under the action of a magnetic field, so as to prevent settling. However, the magnetic particles are distributed along the magnetic lines of force, so that part of the magnetic particles are attached to the permanent magnet, and the concentration of the usable magnetic particles in the magnetorheological fluid is reduced; the position of the permanent magnet is close to the magnetic flow channel, so that the magnetic flow channel is blocked, and the working performance of the magnetorheological damper is greatly reduced.
Disclosure of Invention
The invention aims to provide an O-shaped rod type anti-sedimentation magnetorheological damper which has the characteristics of high-efficiency prevention of sedimentation of magnetic particles, simple structure and high practicability.
The technical scheme of the invention is as follows:
an O-shaped rod type anti-settling magnetorheological damper comprises a left end cover, a piston rod, a cylinder body, a propeller and a piston head;
magnetorheological fluid is injected into the inner space of the cylinder body; the piston rod penetrates through a piston rod hole in the middle of the left end cover to enter the cylinder body and can slide relative to the piston rod hole; the piston rod is connected with the piston head;
a guide through groove perpendicular to the piston rod is formed in the middle of the piston rod in the cylinder body, a propeller shaft perpendicular to the guide through groove is arranged at the middle position of the inner circular surface of the cylinder body corresponding to the guide through groove, and a propeller is arranged on the propeller shaft;
a cylinder is arranged on any blade of the propeller, and the cylinder vertically extends into the guide through groove and can slide along the guide through groove;
and the outer circular surface of the piston head is provided with a coil.
Furthermore, 2-4 blades are arranged on the propeller.
Furthermore, a plurality of groups of empty grooves are uniformly arranged on the outer circular surface of the piston head at intervals along the axial direction, permanent magnetic tiles are arranged on the bottom surfaces of the empty grooves, and coils are arranged on the permanent magnetic tiles.
Furthermore, damping channels penetrating through the left end surface and the right end surface of the piston head are axially arranged in the piston head, and two groups of damping channels are arranged and are respectively positioned at the inner sides of the empty grooves; the axes of the two sets of damping channels are located on both sides of the same axial section of the piston head.
Furthermore, a convex ring is arranged on the right end face of the piston rod, and a circular groove is formed in the right end face of the convex ring; a guiding magnetism isolating aluminum sheet is arranged in the circular groove; the guiding magnetism isolating aluminum sheet is positioned on the convex rings and is respectively provided with a sealing ring groove a, and a second sealing ring is arranged in the sealing ring groove a.
Furthermore, a wire guide groove is formed in the middle of the end face of the piston rod.
Furthermore, a sealing ring groove is arranged on the inner circular surface of the piston rod hole on the left end cover, and a first sealing ring is arranged in the sealing ring groove.
Further, still include the right-hand member lid, cylinder body and left end lid and right-hand member lid pass through bolt fixed connection to seal through the fourth sealing washer.
Furthermore, an anti-sinking valve is arranged in the cylinder body and is positioned between the piston head and the right end cover; a sealing ring groove is arranged on the outer circular surface of the anti-sinking valve, and a third sealing ring is arranged in the sealing ring groove; and a spring is arranged between the anti-sinking valve and the right end cover, one end of the spring is connected with the right end face of the anti-sinking valve, and the other end of the spring is connected with the left end face of the right end cover.
Furthermore, a sealing ring groove d is arranged on the inner circular surface of the propeller shaft on the cylinder body, and a fifth sealing ring is arranged in the sealing ring groove d.
According to the invention, the piston rod is provided with the guide through groove, the blade of the propeller is provided with the cylinder, so that the piston rod can reciprocate and simultaneously pass through the crank slide rod mechanism between the guide through groove and the cylinder, the propeller is driven to rotate, the stirring of the magnetorheological fluid by the propeller is achieved, the uniformity degree of magnetic particles in the magnetorheological fluid is realized, the damping force of the damper is effectively improved, the mounting part in the whole structure is simple, and the stability is higher.
Drawings
FIG. 1 is a schematic structural view of an O-shaped rod type anti-settling magnetorheological damper of the invention;
FIG. 2 is a schematic view of the propeller and guide channel configuration of the present invention;
FIG. 3 is a schematic view of the cylinder and propeller configuration of the present invention;
FIG. 4 is a schematic view of the propeller configuration of the present invention;
the names and serial numbers of the parts in the figure are as follows:
1-left end cover, 2-piston rod, 3-cylinder body, 4-propeller, 5-propeller shaft, 6-cylinder, 7-guiding through groove, 8-guiding magnetism isolating aluminum sheet, 9-piston head, 10-coil, 11-damping channel, 12-permanent magnetic tile, 13-magnetorheological fluid, 14-anti-sinking valve, 15-spring, 16-right end cover, 17-bolt, 18-wire groove, 19-first sealing ring, 20-second sealing ring, 21-convex ring, 22-third sealing ring, 23-fourth sealing ring, 24-fifth sealing ring and 25-circular groove.
Detailed Description
The following detailed description of specific embodiments of the present invention is provided in connection with the accompanying drawings and examples, which are intended to illustrate the invention.
Example 1
As shown in fig. 1-4, the O-shaped rod type anti-settling magnetorheological damper comprises a left end cover 1, a piston rod 2, a cylinder body 3, a propeller 4 and a piston head 9;
a guide through groove 7 vertical to the piston rod 2 is arranged in the middle of the piston rod 2 in the cylinder body 3, a propeller shaft 5 vertical to the guide through groove 7 is arranged at the middle position of the inner circular surface of the cylinder body 3 corresponding to the guide through groove 7, and a propeller 4 is arranged on the propeller shaft 5;
a cylinder 6 is arranged on any blade of the propeller 4, and the cylinder 6 vertically extends into the guide through groove 7 and can slide along the guide through groove 7;
the outer circle surface of the piston head 9 is provided with a coil 10.
2-4 blades are arranged on the propeller 4.
Multiple groups of empty grooves are uniformly arranged on the outer circular surface of the piston head 9 at intervals along the axial direction, permanent magnetic tiles 12 are arranged on the bottom surfaces of the empty grooves, and coils 10 are arranged on the permanent magnetic tiles 12.
Damping channels 11 penetrating through the left end face and the right end face of the piston head 9 are axially arranged in the piston head, and two groups of damping channels 11 are arranged and are respectively positioned at the inner sides of the empty grooves; the axes of the two sets of damping channels 11 are located on either side of the same axial section of the piston head 9.
The right end face of the piston rod 2 is provided with a convex ring 21, and the right end face of the convex ring 21 is provided with a circular groove 25; a guiding magnetism isolating aluminum sheet 8 is arranged in the circular groove 25; the guiding magnetic-isolating aluminum sheet 8 is provided with a sealing ring groove a on the convex ring 21, and a second sealing ring 20 is arranged in the sealing ring groove a.
The middle part of the end surface of the piston rod 2 is provided with a wire guide groove 18.
And a sealing ring groove b is arranged on the inner circular surface of the piston rod hole on the left end cover 1, and a first sealing ring 19 is arranged in the sealing ring groove b.
The cylinder body 3 is fixedly connected with the left end cover 1 and the right end cover 16 through bolts 17 and sealed through a fourth sealing ring 23.
An anti-sink valve 14 is arranged in the cylinder body 3, and the anti-sink valve 14 is positioned between the piston head 9 and the right end cover 16; a sealing ring groove c is arranged on the outer circular surface of the anti-settling valve 14, and a third sealing ring 22 is arranged in the sealing ring groove c; a spring 15 is arranged between the anti-sinking valve 14 and the right end cover 16, one end of the spring 15 is connected with the right end face of the anti-sinking valve 14, and the other end is connected with the left end face of the right end cover 16.
The inner circle surface of the propeller shaft 5 on the cylinder body 3 is provided with a sealing ring groove d, and a fifth sealing ring 24 is arranged in the sealing ring groove d.
Claims (10)
1. The utility model provides a sediment magnetorheological damper is prevented to O type rod-type, includes left end lid (1), piston rod (2), cylinder body (3), screw (4), piston head (9), its characterized in that:
magnetorheological fluid (13) is injected into the inner space of the cylinder body (3); the piston rod (2) penetrates through a piston rod hole in the middle of the left end cover (1) to enter the cylinder body (3) and can slide relative to the piston rod hole; the piston rod (2) is connected with the piston head (9);
a guide through groove (7) vertical to the piston rod (2) is formed in the middle of the piston rod (2) in the cylinder body (3), a propeller shaft (5) vertical to the guide through groove (7) is arranged at the middle position of the inner circular surface of the cylinder body (3) corresponding to the guide through groove (7), and a propeller (4) is arranged on the propeller shaft (5);
a cylinder (6) is arranged on any blade of the propeller (4), and the cylinder (6) vertically extends into the guide through groove (7) and can slide along the guide through groove (7);
and a coil (10) is arranged on the outer circular surface of the piston head (9).
2. The O-bar precipitation-resistant magnetorheological damper of claim 1, wherein: 2-4 blades are arranged on the propeller (4).
3. The O-bar precipitation-resistant magnetorheological damper of claim 1, wherein: multiple groups of empty grooves are uniformly arranged on the outer circular surface of the piston head (9) at intervals along the axial direction, permanent magnetic tiles (12) are arranged on the bottom surfaces of the empty grooves, and coils (10) are arranged on the permanent magnetic tiles (12).
4. The O-bar precipitation-resistant magnetorheological damper of claim 3, wherein: damping channels (11) penetrating through the left end surface and the right end surface of the piston head (9) are axially arranged in the piston head, and two groups of damping channels (11) are respectively positioned at the inner sides of the empty grooves; the axes of the two groups of damping channels (11) are positioned on two sides of the same axial section of the piston head (9).
5. The O-bar precipitation-resistant magnetorheological damper of claim 1, wherein: a convex ring (21) is arranged on the right end face of the piston rod (2), a circular groove (25) is arranged on the right end face of the convex ring (21), and a guide magnetism-isolating aluminum sheet (8) is arranged in the circular groove (25); the guiding magnetism isolating aluminum sheet (8) is positioned on the convex ring (21) and is respectively provided with a sealing ring groove a, and a second sealing ring (20) is arranged in the sealing ring groove a.
6. The O-bar precipitation-resistant magnetorheological damper of claim 1, wherein: and a wire guide groove (18) is formed in the middle of the end face of the piston rod (2).
7. The O-bar precipitation-resistant magnetorheological damper of claim 1, wherein: and a sealing ring groove b is arranged on the inner circular surface of the piston rod hole on the left end cover (1), and a first sealing ring (19) is arranged in the sealing ring groove b.
8. The O-bar precipitation-resistant magnetorheological damper of claim 1, wherein: still include right-hand member lid (16), cylinder body (3) pass through bolt (17) fixed connection with left end lid (1) and right-hand member lid (16) to seal through fourth sealing washer (23).
9. The O-bar precipitation-resistant magnetorheological damper of claim 8, wherein: an anti-sink valve (14) is arranged in the cylinder body (3), and the anti-sink valve (14) is positioned between the piston head (9) and the right end cover (16); a sealing ring groove c is arranged on the outer circular surface of the anti-settling valve (14), and a third sealing ring (22) is arranged in the sealing ring groove c; and a spring (15) is arranged between the anti-sinking valve (14) and the right end cover (16), one end of the spring (15) is connected with the right end face of the anti-sinking valve (14), and the other end of the spring is connected with the left end face of the right end cover (16).
10. The O-bar precipitation-resistant magnetorheological damper of claim 1, wherein: the inner circle surface of the propeller shaft (5) on the cylinder body (3) is provided with a sealing ring groove d, and a fifth sealing ring (24) is arranged in the sealing ring groove d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111367027.0A CN114251407A (en) | 2021-11-18 | 2021-11-18 | O-shaped rod type anti-precipitation magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111367027.0A CN114251407A (en) | 2021-11-18 | 2021-11-18 | O-shaped rod type anti-precipitation magnetorheological damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114251407A true CN114251407A (en) | 2022-03-29 |
Family
ID=80792648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111367027.0A Pending CN114251407A (en) | 2021-11-18 | 2021-11-18 | O-shaped rod type anti-precipitation magnetorheological damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114251407A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0017684A1 (en) * | 1979-04-23 | 1980-10-29 | Showa Manufacturing Co., Ltd. | Hydraulic cylinder for a propulsion unit of an inboard or outboard motor |
| CN101319698A (en) * | 2008-03-27 | 2008-12-10 | 中国科学技术大学 | Damp-controllable magneto-rheological damper |
| CN102654167A (en) * | 2012-05-09 | 2012-09-05 | 杭州电子科技大学 | Magnetorheological damper capable of preventing magnetorheological fluid from precipitating |
| CN107725663A (en) * | 2017-10-24 | 2018-02-23 | 东北大学 | A kind of antisolvent precipitation magnetic rheological liquid damper |
| CN108105320A (en) * | 2017-12-14 | 2018-06-01 | 东北大学 | A kind of magnetic rheological liquid damper sludge proof method and structure |
| CN207848292U (en) * | 2018-02-14 | 2018-09-11 | 华东交通大学 | A kind of biliquid circulation road MR damper with concave groove piston rod |
| CN109723750A (en) * | 2019-02-13 | 2019-05-07 | 重庆大学 | A kind of MR damper piston component of band sedimentation Active dispersion devices |
| CN110966339A (en) * | 2019-12-05 | 2020-04-07 | 广西科技大学 | Spline structure magneto-rheological damper for automobile suspension system |
| CN112901703A (en) * | 2021-01-29 | 2021-06-04 | 重庆大学 | Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids |
| CN113606276A (en) * | 2021-08-12 | 2021-11-05 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
-
2021
- 2021-11-18 CN CN202111367027.0A patent/CN114251407A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0017684A1 (en) * | 1979-04-23 | 1980-10-29 | Showa Manufacturing Co., Ltd. | Hydraulic cylinder for a propulsion unit of an inboard or outboard motor |
| CN101319698A (en) * | 2008-03-27 | 2008-12-10 | 中国科学技术大学 | Damp-controllable magneto-rheological damper |
| CN102654167A (en) * | 2012-05-09 | 2012-09-05 | 杭州电子科技大学 | Magnetorheological damper capable of preventing magnetorheological fluid from precipitating |
| CN107725663A (en) * | 2017-10-24 | 2018-02-23 | 东北大学 | A kind of antisolvent precipitation magnetic rheological liquid damper |
| CN108105320A (en) * | 2017-12-14 | 2018-06-01 | 东北大学 | A kind of magnetic rheological liquid damper sludge proof method and structure |
| CN207848292U (en) * | 2018-02-14 | 2018-09-11 | 华东交通大学 | A kind of biliquid circulation road MR damper with concave groove piston rod |
| CN109723750A (en) * | 2019-02-13 | 2019-05-07 | 重庆大学 | A kind of MR damper piston component of band sedimentation Active dispersion devices |
| CN110966339A (en) * | 2019-12-05 | 2020-04-07 | 广西科技大学 | Spline structure magneto-rheological damper for automobile suspension system |
| CN112901703A (en) * | 2021-01-29 | 2021-06-04 | 重庆大学 | Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids |
| CN113606276A (en) * | 2021-08-12 | 2021-11-05 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
Non-Patent Citations (1)
| Title |
|---|
| 大辞海编辑委员会: "机械原理", vol. 1, 中央广播电视大学出版社出版, pages: 95 - 97 * |
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Application publication date: 20220329 |