CN102767589B - Magneto-rheological damper adjustable in damping channel height - Google Patents
Magneto-rheological damper adjustable in damping channel height Download PDFInfo
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- CN102767589B CN102767589B CN201210224169.6A CN201210224169A CN102767589B CN 102767589 B CN102767589 B CN 102767589B CN 201210224169 A CN201210224169 A CN 201210224169A CN 102767589 B CN102767589 B CN 102767589B
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- lifting board
- chute
- slide bar
- cylinder body
- square piston
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Abstract
The invention discloses a magneto-rheological damper adjustable in damping channel height. The magneto-rheological damper adjustable in damping channel height comprises a first external connecting rod (12), a second external connecting rod (13), a cylinder body (2), a circularly square piston (3), an electromagnetic coil (4), a first lifting plate (51), a second lifting plate (52), magneto-rheological fluid (9), a first slide way (10) and a second slide way (11), wherein the circularly square piston (3), the electromagnetic coil (4), the first lifting plate (51), the second lifting plate (52) and the magneto-rheological fluid (9) are arranged in the cylinder body (2). The height of a first clamping channel or a second damping channel is changed by changing the position of the first lifting plate or the second lifting plate. The magneto-rheological damper can be adjustable in damping channel height, so that output damping force of the magneto-rheological damper is no longer limited in a fixed interval and can be manually adjusted within a large range, and the magneto-rheological damper adjustable in damping channel height has high use value.
Description
Technical field
The present invention relates to half active vibration control gear, be specifically related to a kind of MR damper of adjusting damp channel height.
Background technique
The MR damper made from magnetic flow liquid is a kind of semi-automatic control device of function admirable, it is simple in structure, response is fast, dynamic range is large, good endurance, even still can serve as Passive Control device in the situation that control system loses efficacy, there is very strong reliability.Magnetorheological damping is controlled the reliability both as a kind of half active control system with passive control system, the strong adaptability again with active control system, by certain control law, can reach the control effect very approaching with active control system, be a kind of better future in engineering applications control technique that has.
The formula of the damping force that MR damper can provide is as follows:
In formula, the apparent viscosity that η is damp liquid; L is magnetic conduction section length; H is damp channel height; D is cylinder diameter; D is piston diameter; V is the relative velocity between piston and cylinder body; τ
yfor the shear yield strength of damp liquid, with current related; Sgn is sign function.
The formula of observing MR damper output damping force is known, and MR damper provides the size of damping force and the shear yield strength τ of damp channel height h and damp liquid
yrelevant, by the shear yield strength τ of damping adjusting channel height h and damp liquid
ycan change the size of MR damper damping force, and damp channel height h is positioned at denominator term in formula, its size is very large on the big or small impact of damping force.But, the piston of the MR damper of existing kind and the gap between cylinder body are fixed, the height that is damp channel is non-adjustable, the variation of damping force can only realize by the flow through electric current of electromagnetic coil of adjusting, for this reason, at present a lot of MR damper are all according to the needs of actual conditions and customized, there is no a kind of MR damper that can generally use, and this has limited application and the development of MR damper greatly.
Therefore, need a kind of MR damper of the new damp channel adjusted height to solve the problems referred to above.
Summary of the invention
Goal of the invention: the present invention be directed to effectively damping adjusting channel height of prior art MR damper, thereby cannot be in a wider scope defect of regulation output damping force size, the adjustable for height MR damper of a kind of damp channel has been proposed.
Technological scheme: for achieving the above object, the adjustable for height MR damper of damp channel of the present invention can adopt following technological scheme:
The adjustable for height MR damper of a kind of damp channel, comprise the first outside connecting rod, the second outside connecting rod, cylinder body, circle square piston and electromagnetic coil, also comprise the first lifting board, the second lifting board, magnetic flow liquid, the first chute and the second chute, described round square piston, electromagnetic coil, the first lifting board, the second lifting board, magnetic flow liquid are all arranged in described cylinder body; The relative both sides of described cylinder body are provided with described the first chute and described the second chute; One side of described the first lifting board is provided with the first slide bar, described the first lifting board connects one end of described the first slide bar, one side of described the second lifting board is provided with the second slide bar, described the second lifting board connects one end of described the second slide bar, described the first slide bar is arranged in described the first chute and matches with described the first chute, described the first slide bar can relatively described the first runner movement, described the second slide bar is arranged in described the second chute and matches with described the second chute, and described the second slide bar can relatively described the second runner movement; Described round square piston is arranged between described the first lifting board and described the second lifting board, described electromagnetic coil is arranged on described round square piston, the cross section of described round square piston is surrounded with two relative circular arc lines by two straight lines that are parallel to each other, two circular arc sides of described round square piston and the inner surface of described cylinder body closely suit, and the space between described the first lifting board and described round square piston forms the first damp channel; Space between described the second lifting board and described round square piston forms the second damp channel; The two ends of described round square piston connect respectively one end of described first outside connecting rod one end and described the second outside connecting rod, and the other end of the other end of described the first outside connecting rod and described the second outside connecting rod all stretches out described cylinder body.
Inventive principle: while changing the electric current on electromagnetic coil in adjustable extent, corresponding variation can occur the damping force of output.If change the position of the first lifting board or the second lifting board, change the height of the first damp channel or the second damp channel, while changing the electric current on electromagnetic coil in adjustable extent, the damping force of output can change between other one group of upper and lower.Therefore, realized the adjustable of output damping force scope.
Beneficial effect: the adjustable for height MR damper of damp channel of the present invention has realized the adjustable of MR damper damp channel height, make the output damping force of MR damper no longer only be confined to a fixing interval, and can in a very large scope, artificially regulate, there is very high use value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the adjustable MR damper of damp channel of the present invention;
Fig. 2 is that the adjustable MR damper A-A of damp channel of the present invention is to sectional view.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiments is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Refer to shown in Fig. 1 and Fig. 2, the adjustable for height MR damper of damp channel of the present invention, comprises the outside connecting rod 13 of the first outside connecting rod 12, second, cylinder body 2, circle square piston 3, electromagnetic coil 4, the first lifting board 51, the second lifting board 52, magnetic flow liquid 9, the first chute 10 and the second chute 11.Wherein, justifying square piston 3, electromagnetic coil 4, the first lifting board 51, the second lifting board 52, magnetic flow liquid 9 is all arranged in cylinder body 2.In cylinder body 2, be full of magnetic flow liquid 9.The relative both sides of cylinder body 2 are provided with the first chute 10 and the second chute 11.One side of the first lifting board 51 is provided with one end that the first slide bar 53, the first lifting boards 51 connect the first slide bar 53.One side of the second lifting board 52 is provided with one end that the second slide bar 54, the second lifting boards 52 connect the second slide bar 54.The first slide bar 53 is arranged in the first chute 10 and matches with the first chute 10, and the first slide bar 53 can relative the first chute 10 motions.The second slide bar 54 is arranged in the second chute 11 and matches with the second chute 11, and the second slide bar 54 can relative the second chute 11 motions.Wherein the first chute 10 and the second chute 11 both can provide space for the first slide bar 53 and the second slide bar 54, were again their guide-track grooves.Circle square piston 3 is arranged between the first lifting board 51 and the second lifting board 52, and electromagnetic coil 4 is arranged on round square piston 3.The cross section of circle square piston 3 is surrounded with two relative circular arc lines by two straight lines that are parallel to each other.Two circular arc sides of circle square piston 3 and the inner surface of cylinder body 2 closely suit.Prevent that magnetic flow liquid 9 from flowing through from here.Space between the first lifting board 51 and circle square piston 3 forms the first damp channel 81; Space between the second lifting board 52 and circle square piston 3 forms the second damp channel 82.Wherein, the face that the first lifting board 51 is relative with circle square piston 3 is plane and is parallel to each other, and the face that the second lifting board 52 is relative with circle square piston 3 is plane and is parallel to each other.The height that can control the first damp channel 81 and the second damp channel 82 by controlling the position of the first slide bar 53 in the first chute 10 and the position of the second slide bar 54 in the second chute 11.While changing the electric current on electromagnetic coil 4 in adjustable extent, can there is corresponding variation in the damping force of output.If change the position of the first lifting board 51 or the second lifting board 52, change the height of the first damp channel 81 or the second damp channel 82, while changing the electric current on electromagnetic coil 4 in adjustable extent, the damping force of output can change between other one group of upper and lower.Therefore, realized the adjustable of output damping force scope.
Refer to shown in Fig. 1 and Fig. 2, the two ends of circle square piston 3 connect respectively one end of first outside connecting rod 12 one end and the second outside connecting rod 13, and the other end of the other end of the first outside connecting rod 12 and the second outside connecting rod 13 all stretches out cylinder body 2.Have good positioning after the first lifting board 51 and the second lifting board 52, when circle square piston 3 moves under the promotion of the outside connecting rod 13 of the first outside connecting rod 12 or the second, magnetic flow liquid 9 can flow to the other end from one end of piston by the first damp channel 81 and the second damp channel 82, thereby produces damping force.
Refer to shown in Fig. 1 and Fig. 2, also comprise that the first hub cap 61, second part for hub cap 62, the first hub caps 61 and a part for the second hub cap 62 are arranged in cylinder body 2 and rotate relative to cylinder body 2.Wherein, the first hub cap 61 is all connected with cylinder body 2 by ball bearing 7 with the second hub cap 62.On the first hub cap 61, be provided with the first through hole, in the first through hole, there is internal thread, on the second hub cap 62, be provided with the second through hole, in the second through hole, there is internal thread; The other end of the first slide bar 53 is provided with the first screw rod 531, the first screw rods 531 and is arranged in the first through hole, and the screw thread of the first screw rod 531 matches with the screw thread of the first through hole; The other end of the second slide bar 54 is provided with the second screw rod 541, the second screw rods 541 and is arranged in the second through hole, and the second screw rod 541 matches with the screw thread of the second through hole.By rotating the first hub cap 61 or the second hub cap 62 meeting drive the first lifting board 51 or the second lifting board 51 running fixes.
As mentioned above, the adjustable for height MR damper of damp channel of the present invention has realized the adjustable of MR damper damp channel height, make the output damping force of MR damper no longer only be confined to a fixing interval, and can in a very large scope, think adjusting to there is very high use value.
Claims (4)
1. the adjustable for height MR damper of damp channel, comprise the first outside connecting rod (12), the second outside connecting rod (13), cylinder body (2), circle square piston (3) and electromagnetic coil (4), it is characterized in that, also comprise the first lifting board (51), the second lifting board (52), magnetic flow liquid (9), the first chute (10) and the second chute (11), described round square piston (3), electromagnetic coil (4), the first lifting board (51), the second lifting board (52), magnetic flow liquid (9) are all arranged in described cylinder body (2), in described cylinder body (2), be full of described magnetic flow liquid (9), the relative both sides of described cylinder body (2) are provided with described the first chute (10) and described the second chute (11), one side of described the first lifting board (51) is provided with the first slide bar (53), described the first lifting board (51) connects one end of described the first slide bar (53), one side of described the second lifting board (52) is provided with the second slide bar (54), described the second lifting board (52) connects one end of described the second slide bar (54), described the first slide bar (53) is arranged in described the first chute (10) and matches with described the first chute (10), described the first slide bar (53) can move by relatively described the first chute (10), described the second slide bar (54) is arranged in described the second chute (11) and matches with described the second chute (11), described the second slide bar (54) can move by relatively described the second chute (11), described round square piston (3) is arranged between described the first lifting board (51) and described the second lifting board (52), described electromagnetic coil (4) is arranged on described round square piston (3), the cross section of described round square piston (3) is surrounded with two relative circular arc lines by two straight lines that are parallel to each other, two circular arc sides of described round square piston (3) and the inner surface of described cylinder body (2) closely suit, and the space between described the first lifting board (51) and described round square piston (3) forms the first damp channel (81), space between described the second lifting board (52) and described round square piston (3) forms the second damp channel (82), the two ends of described round square piston (3) connect respectively one end of described first outside connecting rod (12) one end and described the second outside connecting rod (13), and the other end of the other end of described the first outside connecting rod (12) and described the second outside connecting rod (13) all stretches out described cylinder body (2).
2. the adjustable for height MR damper of damp channel as claimed in claim 1, it is characterized in that, the face that described the first lifting board (51) is relative with described round square piston (3) is plane and is parallel to each other, and the face that described the second lifting board (52) is relative with described round square piston (3) is plane and is parallel to each other.
3. the adjustable for height MR damper of damp channel as claimed in claim 1, it is characterized in that, also comprise the first hub cap (61), the second hub cap (62), a part for a part for described the first hub cap (61) and described the second hub cap (62) is arranged in described cylinder body (2) and rotates relative to described cylinder body (2), on described the first hub cap (61), be provided with the first through hole, in described the first through hole, there is internal thread, on described the second hub cap (62), be provided with the second through hole, in described the second through hole, there is internal thread; The other end of described the first slide bar (53) is provided with the first screw rod (531), and described the first screw rod (531) is arranged in described the first through hole, and the screw thread of described the first screw rod (531) matches with the screw thread of described the first through hole; The other end of described the second slide bar (54) is provided with the second screw rod (541), and described the second screw rod (541) is arranged in described the second through hole, and described the second screw rod (541) matches with the screw thread of described the second through hole.
4. the adjustable for height MR damper of damp channel as claimed in claim 3, is characterized in that, described the first hub cap (61) is all connected with described cylinder body (2) by ball bearing (7) with described the second hub cap (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210224169.6A CN102767589B (en) | 2012-07-02 | 2012-07-02 | Magneto-rheological damper adjustable in damping channel height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210224169.6A CN102767589B (en) | 2012-07-02 | 2012-07-02 | Magneto-rheological damper adjustable in damping channel height |
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| CN102767589A CN102767589A (en) | 2012-11-07 |
| CN102767589B true CN102767589B (en) | 2014-07-16 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979847B (en) * | 2012-12-03 | 2014-05-07 | 河北工业大学 | Rotary type magneto-rheological damper |
| CN103062276B (en) * | 2013-01-15 | 2014-12-10 | 谭晓婧 | Gapped magneto-rheological damper with two piston rods out |
| CN103089904B (en) * | 2013-01-29 | 2015-04-01 | 谭晓婧 | Combined cylinder double rod-out magnetorheological damper |
| CN103089905B (en) * | 2013-02-04 | 2015-03-11 | 谭晓婧 | Crack cylinder double-out rod magneto-rheological damper |
| CN103939518B (en) * | 2014-01-26 | 2015-12-09 | 福建工程学院 | A kind of one pole flat-faced tube magneto-rheological vibration damper |
| CN103942394B (en) * | 2014-04-25 | 2017-02-15 | 郑州大学 | Amplitude limiting optimizing method based on magneto-rheological damper |
| CN106002374B (en) * | 2016-06-24 | 2017-11-10 | 哈尔滨理工大学 | Based on the adjustable special fixture oscillation damping method of integral wheel Milling Process shock reducing type |
| CN110043599A (en) * | 2019-05-08 | 2019-07-23 | 中南大学 | Magnetic rheologic flexible loading device can be positioned |
| CN110861996B (en) * | 2019-11-22 | 2021-07-30 | 南通大学 | Tension balance suspension device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2192186T3 (en) * | 1994-12-03 | 2003-10-01 | Zf Sachs Ag | VIBRATION SHOCK ABSORBER WITH ADJUSTABLE SHOCK FORCE. |
| AU1571999A (en) * | 1997-12-16 | 1999-07-05 | Colebrand Limited | Shock transmission unit |
| CA2637511C (en) * | 2006-02-09 | 2012-05-22 | Central Research Institute Of Electric Power Industry | Fluid damper |
| CN101725659A (en) * | 2009-12-15 | 2010-06-09 | 谭和平 | External electromagnet magnetorheological damper |
| CN202203322U (en) * | 2011-08-19 | 2012-04-25 | 谢宁 | Double-ejection-rod magnetorheological damper |
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