CN103075459B - Double-ejection rod ring magnetic steel piston magnetorheological damper - Google Patents
Double-ejection rod ring magnetic steel piston magnetorheological damper Download PDFInfo
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- CN103075459B CN103075459B CN201310030650.6A CN201310030650A CN103075459B CN 103075459 B CN103075459 B CN 103075459B CN 201310030650 A CN201310030650 A CN 201310030650A CN 103075459 B CN103075459 B CN 103075459B
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Abstract
The invention discloses a double-ejection rod ring magnetic steel piston magnetorheological damper. The damper comprises a gain ring piston (20), a gain piston rod (9), a spring (21) and an inner cylinder (25); an outer working cylinder (5) and the inner cylinder (25) form a double-layered cylinder structure, both a ring piston (15) and the gain ring piston (20) are installed between the outer working cylinder (5) and the inner cylinder (25), one end of the gain piston rod (9) is installed on a U-shaped support (7), the other end of the gain piston rod (9) is installed on the inner cylinder (25), a right end cover (24) is connected with the spring (21), and the left end of the spring (21) is connected with the right end of the gain ring piston (20). The damper not only has the advantages of long working stroke and low consumption during a working process, but also can have a safety protection function, so that the service life of a part is prolonged.
Description
Technical field
The present invention relates to a kind of magnetic rheological liquid damper, specifically a kind of two rod annular magnetic steel piston magneto-rheological damper.
Background technique
Magnetic flow liquid is a kind of New Magnetic Field Controlled functional material, it is when without externally-applied magnetic field, show as the Newtonian fluid that flowing is good, but under additional magnetic fields, the rheological properties generation great variety of fluid, present the mechanical property of similar solid, and viscosity B coefficent is continuous reversible, namely once after removing magnetic field, the liquid that can flow is become again.Magnetic flow liquid effect feature that is continuous, reversible, rapid and that be easy to control makes magnetic flow liquid mechanical device to be widely used in fields such as Aeronautics and Astronautics, automotive industry, hydraulic transmission, biotechnology, medical treatment prospect.
MR damper is as a kind of intelligent damping device, its damping force size can carry out long-range electrodeless adjustment by controlling power supply, but adjustment process consumes electric energy, common MR damper is when control electric power outputting current is zero, the viscosity of magnetic flow liquid reaches minimum and the damping force produced is less, so once control power failure, the damping force of common MR damper is difficult to the normal work of guarantee system because output is less; It is also relevant with the effective work area between clutch release slave cylinder and piston that MR damper exports damping force size, singly to go out rod-type damper stroke little because of existing, two go out rod-type damper piston mostly be cylindrical, clutch release slave cylinder is cylindrical shape, the useful area of piston and clutch release slave cylinder is less, the damping force produced is less, and application area is very restricted.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of two rod annular magnetic steel piston magneto-rheological damper, double effective work area can not only be increased thus produce larger damping force, reaching the effect reducing energy consumption, and the stroke of damper can be increased; When controlling power failure, also can the Security of assurance device further, to ensure the normal work of system.
To achieve these goals, the technical solution used in the present invention is: a kind of two rod annular magnetic steel piston magneto-rheological damper, comprise outer operative cylinder, U-shaped support, annular piston and piston rod, magnetic flow liquid is full of in outer clutch release slave cylinder, the two ends of outer operative cylinder are by left end cap and right end cap sealing, left end cap is provided with center hole, bearing and seal arrangement are installed in center hole, it is outside that piston rod one end is placed in outer operative cylinder through center hole, the other end is connected with U-shaped frame bottom center, U-shaped support one end is connected with annular piston left end, around the second field coil in annular piston inside is wound with, outward around the first field coil with fill degaussion coil and the first field coil is in and fills outside degaussion coil, annular piston external diameter is less than outer operative pot cylinder internal diameter thus leaves the first magnetic flow liquid gap, internal diameter is greater than inner layer cylinder external diameter thus leaves the second magnetic flow liquid gap, also comprise gain annular piston, gain piston rod, spring and inner layer cylinder, outer operative cylinder and inner layer cylinder composition double-layered cylinder structure, annular piston and gain annular piston are installed between outer operative cylinder and inner layer cylinder, gain piston rod one end is arranged on U-shaped support, the other end is arranged on inner layer cylinder, right end cap is connected with spring, spring left end is connected with gain annular piston right-hand member, gain annular internal piston is wound with inner ring the 3rd field coil, outer shroud the 4th field coil, fill degaussion coil, 4th field coil, 3rd field coil, second field coil and the first field coil are by First Line passage, two-wire channel, 3rd line passage leads to control power supply, gain annular piston external diameter is less than outer operative pot cylinder internal diameter thus leaves the 3rd magnetic flow liquid gap, and the internal diameter of gain annular piston is greater than inner layer cylinder external diameter thus leaves the 4th magnetic flow liquid gap, annular piston is made up of magnet steel, and gain annular piston is made up of high magnetic conductive metal material.
Further, the spring circumference uniform distribution connected on the left of right end cap, quantity is no less than four.
Compared with existing apparatus, the present invention adopts two rod structure, there is not the problem of cubage compensation, efficiently solves the problem that device working stroke is little; Degaussion coil and field coil is filled when breaking down above magnet steel piston, right-hand member piston field coil passes into the electric current reverse with magnet steel piston magnetizing coil, in generation magnetic field, magnetic flow liquid gap, thus produce necessary damping force, the damping force coordinating Compress Spring to provide, can play the effect of protective gear preferably; Leave magnetic flow liquid between magnet steel piston and outer operative cylinder and inner layer cylinder to flow gap, double effective work area can be increased thus make the damping force that device provides larger, and just reach near predetermined operating fields intensity before magnetizing coil can be utilized to make device busy, by control power supply carry out exporting damping force regulate needed for electric energy will to reduce greatly and energy-conservation; Even if break down, the damping force that protective gear provides can maintain the normal work of system completely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that A-A in Fig. 1 is to sectional view;
Fig. 3 is that B-B in Fig. 1 is to sectional view;
Fig. 4 is that C-C in Fig. 1 is to sectional view;
Fig. 5 is that D-D in Fig. 1 is to sectional view.
In figure: 1, piston rod, 2, bearing, 3, seal arrangement, 4, left end cap, 5, outer operative cylinder, 6, magnetic flow liquid, 7, U-shaped support, 8, 3rd line passage, 9, gain piston rod, 10, two-wire channel, 11, first field coil, 12, fill degaussion coil, 13, second field coil, 14, first magnetic flow liquid space, 15, annular piston, 16, second magnetic flow liquid space, 17, First Line passage, 18, 3rd field coil, 19, 3rd magnetic flow liquid space, 20, gain annular piston, 21, spring, 22, 4th field coil, 23, 4th magnetic flow liquid space, 24, right end cap, 25, inner layer cylinder, 26, power supply.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 1 to 5, this pair of rod annular magnetic steel piston magneto-rheological damper, comprise outer operative cylinder 5, U-shaped support 7, annular piston 15 and piston rod 1, magnetic flow liquid 6 is full of in outer clutch release slave cylinder 5, the two ends of outer operative cylinder 5 are sealed by left end cap 4 and right end cap 24, left end cap 4 is provided with center hole, bearing 2 and seal arrangement 3 are installed in center hole, it is outside that piston rod 1 one end is placed in outer operative cylinder 5 through center hole, the other end is connected with U-shaped support 7 bottom centre, U-shaped support 7 one end is connected with annular piston 15 left end, around the second field coil 13 in annular piston 15 inside is wound with, outward around the first field coil 11 with fill degaussion coil 12 and the first field coil 11 is in and fills outside degaussion coil 12, annular piston 15 external diameter is less than outer operative cylinder 5 barrel bore thus leaves the first magnetic flow liquid gap 14, internal diameter is greater than inner layer cylinder 25 external diameter thus leaves the second magnetic flow liquid gap 16, also comprise gain annular piston 20, gain piston rod 9, spring 21 and inner layer cylinder 25, outer operative cylinder 5 and inner layer cylinder 25 form double-layered cylinder structure, annular piston 15 and gain annular piston 20 are installed between outer operative cylinder 5 and inner layer cylinder 25, gain piston rod 9 one end is arranged on U-shaped support 7, the other end is arranged on inner layer cylinder 25, adopt piston rod 1 and gain piston rod 9, namely, there is not the problem of cubage compensation, efficiently solve the problem that device working stroke is little in two rod structure, right end cap 24 is connected with spring 21, spring 21 left end is connected with gain annular piston 20 right-hand member, gain annular piston 20 inside is wound with inner ring the 3rd field coil 18, outer shroud the 4th field coil 22, fills degaussion coil 12, the 4th field coil 22, the 3rd field coil 18, second field coil 13 and the first field coil 11 and leads to control power supply 26 by First Line passage 17, second line path 10, the 3rd line passage 8, gain annular piston 20 external diameter is less than outer operative cylinder 5 barrel bore thus leaves the 3rd magnetic flow liquid gap 19, the internal diameter of gain annular piston 20 is greater than inner layer cylinder 25 external diameter thus leaves the 4th magnetic flow liquid gap 23, add the 3rd magnetic flow liquid gap 19 and the 4th magnetic flow liquid gap 23 herein, add double effective work area thus make the damping force that device provides larger.
Further, annular piston 15 is made up of magnet steel, and gain annular piston 20 is made up of high magnetic conductive metal material, and magnetic steel material has and certain fills demagnetization characteristic, can play the effect of energy saving during work; High permeability material effectively can reduce magnetic losses.
Further, spring 21 circumference uniform distribution connected on the left of right end cap 24, quantity is no less than four, is meeting under actual working conditions, reduces the installation of spring 21 number as far as possible.
Two rod annular magnetic steel piston magneto-rheological damper working procedure: first utilize control power supply 26 magnetize by the degaussion coil 12 pairs of annular pistons 15 that fill in the middle part of annular piston 15 or demagnetize, make the operating fields intensity that annular piston 15 reaches predetermined, this produces certain magnetic field by the first magnetic flow liquid space 14 made between annular piston 15 and outer operative cylinder 5 and the 3rd magnetic flow liquid space 19, magnetic flow liquid viscosity in first magnetic flow liquid space 14 and the 3rd magnetic flow liquid space 19 is uprised, when piston rod 1 drives U-shaped support 7 and annular piston 15 to move in outer clutch release slave cylinder 5, predetermined work damping force will be subject to.
When controlling power supply 26 and exporting forward current to the first field coil 11 of annular piston 15 and the second field coil 13, its magnetic field produced is consistent with annular piston 15 magnetic direction, this is by higher for the magnetic intensity in the gap that makes between annular piston 15 and outer operative cylinder 5, in gap, magnetic flow liquid 6 viscosity is higher, when piston rod 1 drives U-shaped support 7 and annular piston 15 to move in outer clutch release slave cylinder 5, larger damping force will be produced.
When controlling power supply 26 and exporting back current to the first field coil 11 of annular piston 15 and the second field coil 13, its magnetic field produced is contrary with annular piston 15 magnetic direction, the magnetic intensity made in the first magnetic flow liquid gap 14 and the 3rd magnetic flow liquid gap 19 reduces by this, now magnetic flow liquid 6 viscosity declines, when piston rod 1 drives U-shaped support 7 and annular piston 15 to move in outer clutch release slave cylinder 5, this will produce less damping force, when the magnetic field that back current produces is contrary with the equal and opposite in direction direction, magnetic field of annular piston 15, this will make the first magnetic flow liquid gap 14 and the 3rd magnetic flow liquid gap 19 internal magnetic field intensity close to zero magnetic field, now magnetic flow liquid 6 viscosity reaches minimum, when piston rod 1 drives U-shaped support 7 and annular piston 15 to move in outer clutch release slave cylinder 5, minimum damping force will be subject to.
When on annular piston 15 fill degaussion coil 12 and the second field coil 13 break down time, gain annular piston 20, first field coil 11 and the 4th field coil 22 pass into the electric current reverse with annular piston 15 magnetizing coil, certain magnetic intensity is produced in the second magnetic flow liquid gap 19 and the 4th magnetic flow liquid gap 23, magnetic flow liquid 6 viscosity in second magnetic flow liquid gap 16 and the 4th magnetic flow liquid gap 23 is uprised, when piston rod 1 drives U-shaped support 7 and annular piston 15 to move in outer clutch release slave cylinder 5, and then promotion gain annular piston 20 moves, now because magnetic flow liquid 6 viscosity in gain annular piston 20 gap is higher, necessary damping force will be produced, now coordinate the damping force that Compress Spring 21 provides again, can damping force needed for generator trouble free service.
Claims (2)
1. a two rod annular magnetic steel piston magneto-rheological damper, comprise outer operative cylinder (5), U-shaped support (7), annular piston (15) and piston rod (1), magnetic flow liquid (6) is full of in outer clutch release slave cylinder (5), the two ends of outer operative cylinder (5) are by left end cap (4) and right end cap (24) sealing, left end cap (4) is provided with center hole, bearing (2) and seal arrangement (3) are installed in center hole, it is outside that piston rod (1) one end is placed in outer operative cylinder (5) through center hole, the other end is connected with U-shaped support (7) bottom centre, U-shaped support (7) one end is connected with annular piston (15) left end, around the second field coil (13) in annular piston (15) inside is wound with, outward around the first field coil (11) with fill degaussion coil (12) and the first field coil (11) is in and fills outside degaussion coil (12), annular piston (15) external diameter is less than outer operative cylinder (5) barrel bore thus leaves the first magnetic flow liquid gap (14), internal diameter is greater than inner layer cylinder (25) external diameter thus leaves the second magnetic flow liquid gap (16), it is characterized in that, also comprise gain annular piston (20), gain piston rod (9), spring (21) and inner layer cylinder (25), outer operative cylinder (5) and inner layer cylinder (25) composition double-layered cylinder structure, annular piston (15) and gain annular piston (20) are installed between outer operative cylinder (5) and inner layer cylinder (25), gain piston rod (9) one end is arranged on U-shaped support (7), the other end is arranged on inner layer cylinder (25), right end cap (24) is connected with spring (21), spring (21) left end is connected with gain annular piston (20) right-hand member, gain annular piston (20) inside is wound with inner ring the 3rd field coil (18), outer shroud the 4th field coil (22), fill degaussion coil (12), 4th field coil (22), 3rd field coil (18), second field coil (13) and the first field coil (11) are by First Line passage (17), two-wire channel (10), 3rd line passage (8) leads to and controls power supply (26), gain annular piston (20) external diameter is less than outer operative cylinder (5) barrel bore thus leaves the 3rd magnetic flow liquid gap (19), and the internal diameter of gain annular piston (20) is greater than inner layer cylinder (25) external diameter thus leaves the 4th magnetic flow liquid gap (23), described annular piston (15) is made up of magnet steel, and gain annular piston (20) is made up of high magnetic conductive metal material.
2. the two rod annular magnetic steel piston magneto-rheological damper of one according to claim 1, is characterized in that, spring (21) circumference uniform distribution that described right end cap (24) left side connects, and quantity is no less than four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030650.6A CN103075459B (en) | 2013-01-28 | 2013-01-28 | Double-ejection rod ring magnetic steel piston magnetorheological damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030650.6A CN103075459B (en) | 2013-01-28 | 2013-01-28 | Double-ejection rod ring magnetic steel piston magnetorheological damper |
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| CN103075459A CN103075459A (en) | 2013-05-01 |
| CN103075459B true CN103075459B (en) | 2015-05-27 |
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| CN201310030650.6A Expired - Fee Related CN103075459B (en) | 2013-01-28 | 2013-01-28 | Double-ejection rod ring magnetic steel piston magnetorheological damper |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065528A (en) * | 2015-07-19 | 2015-11-18 | 常州大学 | Single-pole multi-grade piston adaptive magneto-rheological damper |
| CN114198425B (en) * | 2022-01-25 | 2023-05-16 | 江苏省特种设备安全监督检验研究院 | Double-shearing magneto-rheological clutch under permanent magnet excitation |
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| CN200975034Y (en) * | 2006-10-13 | 2007-11-14 | 北京工业大学 | Double extending rod double cylinder electrical current changeable damper |
| CN102182785A (en) * | 2011-03-18 | 2011-09-14 | 谭晓婧 | Magnetic steel piston type magneto-rheological damper with double ejection rods |
| CN102287479A (en) * | 2011-09-01 | 2011-12-21 | 谢宁 | Double-rod magnetorheological grease damper |
| CN102297232A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Single-outstretch pole ring-type piston magneto-rheological damper |
| CN102297233A (en) * | 2011-08-31 | 2011-12-28 | 谢宁 | Single-ended magnetorheological damper |
| CN203098720U (en) * | 2013-01-28 | 2013-07-31 | 中国矿业大学 | Double-outlet-rod ring-shaped magnetic steel piston magneto-rheological damper |
-
2013
- 2013-01-28 CN CN201310030650.6A patent/CN103075459B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975034Y (en) * | 2006-10-13 | 2007-11-14 | 北京工业大学 | Double extending rod double cylinder electrical current changeable damper |
| CN102182785A (en) * | 2011-03-18 | 2011-09-14 | 谭晓婧 | Magnetic steel piston type magneto-rheological damper with double ejection rods |
| CN102297232A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Single-outstretch pole ring-type piston magneto-rheological damper |
| CN102297233A (en) * | 2011-08-31 | 2011-12-28 | 谢宁 | Single-ended magnetorheological damper |
| CN102287479A (en) * | 2011-09-01 | 2011-12-21 | 谢宁 | Double-rod magnetorheological grease damper |
| CN203098720U (en) * | 2013-01-28 | 2013-07-31 | 中国矿业大学 | Double-outlet-rod ring-shaped magnetic steel piston magneto-rheological damper |
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