CN102359536A - Leakage-free seal-ring-free two-way controllable magnetorheological damper - Google Patents
Leakage-free seal-ring-free two-way controllable magnetorheological damper Download PDFInfo
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- CN102359536A CN102359536A CN2011102534014A CN201110253401A CN102359536A CN 102359536 A CN102359536 A CN 102359536A CN 2011102534014 A CN2011102534014 A CN 2011102534014A CN 201110253401 A CN201110253401 A CN 201110253401A CN 102359536 A CN102359536 A CN 102359536A
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Abstract
The invention discloses a leakage-free seal-ring-free two-way controllable magnetorheological damper which comprises a cylinder body, a piston and a piston rod, wherein the left end and the right end of the cylinder body are respectively connected with a left corrugated pipe and a right corrugated pipe hermetically, the left corrugated pipe is hermetically connected with a left end cover, the left end cover and a right end cover are hermetically connected with the piston rod, the left corrugated pipe and the right corrugated pipe are hermetically connected with the left end cover and the right end cover, and the centers of the left end cover and the right end cover are hermetically connected with the piston rod; a communicating pipe is arranged on the cylinder body; a left circular coil and a right circular coil are fixedly connected inside the cylinder body, and gaps between the inner holes of the circular coils and the piston rod form a damping channel; and a left one-way valve and a right one-way valve are arranged on the communicating pipe, and the piston rod is located between the left one-way valve and the right one-way valve. In the invention, the corrugated pipes are used as sealing elements, leakage caused by wearing between the piston rod and a seal ring is avoided, and the corrugated pipes do not bear working pressure. The damper can not leak within the service life of the corrugated pipes.
Description
Technical field
The present invention relates to a kind of damper, particularly a kind of do not have leak the two-way controlled MR damper of no seal ring.
Background technique
MR damper is a kind of semi-active damper spare; Its damping force is along with the size of coil current is adjustable continuously; The MR damper regulation range is wide, speed of response is fast, energy consumption is low; Extensively applied in the structural vibration reduction control fields such as automobile, bridge, building structural vibration reduction to be had important effect.The basic comprising of magnetic flow liquid is the magnetic molecule that suspending in the basal liquid; When the MR damper of common structure is reciprocating; Particle ceaselessly weares and teares to piston rod and seal ring, and it is big more to exert oneself, and it is fast more to wear and tear; Begin soon to leak, cause the life-span of MR damper all far to be shorter than oil damper usually.
Summary of the invention
The object of the invention is exactly the deficiency to existing technology; A kind of a kind of new damper structure form that the objective of the invention is to design is provided; Got rid of the friction sealed structure between general damping device seal ring and the piston rod, with bellows as the sealed body structure.Respectively there is a coil at the damper two ends, and a damp channel is respectively arranged, can two-way control respectively.
For realizing above-mentioned purpose, the present invention adopts following technological scheme:
A kind of do not have leak the two-way controlled MR damper of no seal ring; Comprise cylinder body, piston, piston rod, the left end cap that is positioned at the cylinder body two ends and right end cap, piston is connected on the piston rod, and piston places cylinder body; In cylinder body, be full of the magnetic flow liquid (not shown); It is characterized in that: airtight respectively left bellows, the right bellows of being connected with of the right ends of said cylinder body, left bellows is connected with left end cap is airtight, and the center of left end cap is connected with piston rod is airtight; Right bellows is connected with right end cap is airtight, and the center of right end cap is connected with piston rod is airtight; On cylinder body, be provided with connecting tube, the right ends of the cylinder body that the right ends of connecting tube is connected to, and with the internal communication of cylinder body, the left port of connecting tube is connected the left end of cylinder body, the right output port of connecting tube is connected the right-hand member of cylinder body; Internal fixation at cylinder body is connected with ring left coil and the right coil of ring; The right coil of ring left coil and ring is arranged between the left port and right output port of connecting tube; The ring left coil is located at the inboard of left port; The right coil of ring is located at the inboard of right output port, and the endoporus and the gap between the piston rod of ring left coil form left damp channel, and the endoporus and the gap between the piston rod of the right coil of ring form right damp channel; On connecting tube, be provided with left one-way valve and right one-way valve, left one-way valve is positioned at the inboard of ring left coil, and right one-way valve is positioned at the inboard of the right coil of ring, and piston is between left one-way valve and right one-way valve; Ring left coil, the right coil of ring are connected with DC electrical source respectively.Above-mentioned cylinder body, piston, piston rod are solid of rotation; The lead-in wire of ring left coil and the right coil of ring can pass cylinder body and be connected with DC electrical source, and the position of passing cylinder body is sealed.
The bellows two ends are connected with end bracket enclosed with cylinder body respectively, and end cap is fixed on the piston rod and together moves with bar, and iron-core coil is an annulus, forms damp channel with piston rod.
When piston when the left movement, left one-way valve receives backpressure to be ended, magnetic flow liquid is extruded through damp channel; Change and to locate ring left coil electric current; With regard to can regulate direction damping force left, meanwhile, right one-way valve conducting; Magnetic flow liquid in the bellows of the right flows in the cylinder body through right one-way valve, and right damp channel is inoperative.Vice versa.
Owing to there is connecting tube that left bellows, right bellows are coupled together, two ends are symplex structure, so in stretching and compression process, do not bear inner magnet rheology hydraulic coupling basically, the working pressure of damper is then born by piston, cylinder body, damp channel.
Preferably, the inwall of described piston and cylinder body is slidingly matched.
The present invention does not have the beneficial effect that leaks the two-way controlled MR damper of no seal ring; Adopt bellows as Sealing; Avoided the leakage that causes because of wearing and tearing between piston rod and the seal ring; And bellows does not bear working pressure, as long as within the fatigue life of bellows, damper just can not leak; Bellows is replaceable, and remaining part is reusable; Can reduce the coaxality requirement of cylinder body and piston rod during installation; Such as automotive dampers, it can be than the more convenient control more quickly of general MR damper when requiring two-way asymmetric exerting oneself.
Description of drawingsFig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described, but does not therefore limit the present invention among the described scope of embodiments.
Referring to Fig. 1, a kind of do not have leak the two-way controlled MR damper of no seal ring, comprise cylinder body 1, piston 2, piston rod 3, the left end cap 5 that is positioned at cylinder body 1 two ends and right end cap 5A; Piston 2 is connected on the piston rod 3; Piston 2 places cylinder body 1, in cylinder body 1, has been full of the magnetic flow liquid (not shown), it is characterized in that: the right ends of said cylinder body 1 is airtight respectively to be connected with left bellows 6, right bellows 6A; Left side bellows 6 and 5 airtight connections of left end cap; The center of left end cap 5 and 3 airtight connections of piston rod, right bellows 6A is connected with right end cap 5A is airtight, the center of right end cap 5A and 3 airtight connections of piston rod; On cylinder body 1, be provided with connecting tube 7, the right ends of the cylinder body 1 that the right ends of connecting tube 7 is connected to, and with the internal communication of cylinder body 1, the left port 71 of connecting tube 7 is connected the left end of cylinder body 1, the right output port 71A of connecting tube 7 is connected the right-hand member of cylinder body 1; Internal fixation at cylinder body 1 is connected with ring left coil 4 and the right coil 4A of ring; The right coil 4A of ring left coil 4 and ring is arranged between the left port 71 and right output port 71A of connecting tube 7; Ring left coil 4 is located at the inboard of left port 71; The right coil 4A of ring is located at the inboard of right output port 71A, and the gap between the endoporus of ring left coil 4 and the piston rod 3 forms left damp channel 9, and endoporus and the gap between the piston rod 3 of the right coil 4A of ring form right damp channel 9A; On connecting tube 7, be provided with left one-way valve 8 and right one-way valve 8A, left one-way valve 8 is positioned at the inboard of ring left coil 4, and right one-way valve 8A is positioned at the inboard of the right coil 4A of ring, and piston 2 is between left one-way valve 8 and right one-way valve 8A; Ring left coil 4, the right coil 4A of ring are connected with DC electrical source respectively.
Described piston 2 is slidingly matched with the inwall of cylinder body 1.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. one kind is not had the two-way controlled MR damper of the no seal ring of leakage; Comprise cylinder body (1), piston (2), piston rod (3), the left end cap (5) that is positioned at cylinder body (1) two ends and right end cap (5A); Piston (2) is connected on the piston rod (3); Piston (2) places cylinder body (1), in cylinder body (1), has been full of magnetic flow liquid, it is characterized in that: airtight respectively left bellows (6), the right bellows (6A) of being connected with of the right ends of said cylinder body (1); Left side bellows (6) and airtight connection of left end cap (5); The center of left end cap (5) and airtight fixed connection of piston rod (3), right bellows (6A) and airtight connection of right end cap (5A), the center of right end cap (5A) and airtight fixed connection of piston rod (3); On cylinder body (1), be provided with connecting tube (7); The right ends of the cylinder body (1) that the right ends of connecting tube (7) is connected to; And with the internal communication of cylinder body (1); The left port (71) of connecting tube (7) is connected the left end of cylinder body (1), and the right output port (71A) of connecting tube (7) is connected the right-hand member of cylinder body (1); Internal fixation at cylinder body (1) is connected with ring left coil (4) and the right coil (4A) of ring; The right coil of ring left coil (4) and ring (4A) is separately positioned on connecting tube between the left port (71) and right output port (71A) of (7); Ring left coil (4) is located at the inboard of left port (71); The right coil of ring (4A) is located at the inboard of right output port (71A); Gap between the endoporus of ring left coil (4) and the piston rod (3) forms left damp channel (9), and the endoporus of the right coil of ring (4A) and the gap between the piston rod (3) form right damp channel (9A); On connecting tube (7), be provided with left one-way valve (8) and right one-way valve (8A); Left side one-way valve (8) is positioned at the inboard of ring left coil (4); Right one-way valve (8A) is positioned at the inboard of the right coil of ring (4A), and piston (2) is positioned between left one-way valve (8) and the right one-way valve (8A); Ring left coil (4), the right coil of ring (4A) are connected with DC electrical source respectively.
2. nothing according to claim 1 is leaked the two-way controlled MR damper of no seal ring, it is characterized in that: described piston (2) is slidingly matched with the inwall of cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253401.4A CN102359536B (en) | 2011-08-31 | 2011-08-31 | A kind of No leakage is without the two-way controlled MR damper of seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253401.4A CN102359536B (en) | 2011-08-31 | 2011-08-31 | A kind of No leakage is without the two-way controlled MR damper of seal ring |
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| Publication Number | Publication Date |
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| CN102359536A true CN102359536A (en) | 2012-02-22 |
| CN102359536B CN102359536B (en) | 2015-12-16 |
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| CN201110253401.4A Active CN102359536B (en) | 2011-08-31 | 2011-08-31 | A kind of No leakage is without the two-way controlled MR damper of seal ring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233999A (en) * | 2013-05-05 | 2013-08-07 | 吉林大学 | Piston assembly capable of achieving flow compensation |
| CN103267159A (en) * | 2013-05-05 | 2013-08-28 | 吉林大学 | Double-acting magneto-rheological pressure and flow control valve |
| CN108953461A (en) * | 2018-07-12 | 2018-12-07 | 河海大学常州校区 | A kind of in-line arrangement hydraulic damper |
| CN109236936A (en) * | 2018-11-11 | 2019-01-18 | 华东交通大学 | A kind of MR damper being sealed using elastic metallic bellows |
| CN110228606A (en) * | 2019-05-16 | 2019-09-13 | 东南大学 | A kind of magnetorheological landing mechanism and way to play for time of repeatable buffering |
| CN111895025A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN113757292A (en) * | 2021-09-16 | 2021-12-07 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
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| JPH07190127A (en) * | 1993-12-27 | 1995-07-28 | Kayaba Ind Co Ltd | Electroviscous fluid filled shock absorber |
| EP1255057A2 (en) * | 2001-04-30 | 2002-11-06 | Delphi Technologies, Inc. | Floating rod guide |
| CN101379317A (en) * | 2006-02-09 | 2009-03-04 | 财团法人电力中央研究所 | Fluid damper |
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2011
- 2011-08-31 CN CN201110253401.4A patent/CN102359536B/en active Active
Patent Citations (3)
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| JPH07190127A (en) * | 1993-12-27 | 1995-07-28 | Kayaba Ind Co Ltd | Electroviscous fluid filled shock absorber |
| EP1255057A2 (en) * | 2001-04-30 | 2002-11-06 | Delphi Technologies, Inc. | Floating rod guide |
| CN101379317A (en) * | 2006-02-09 | 2009-03-04 | 财团法人电力中央研究所 | Fluid damper |
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| 唐龙等: "磁流变液温度特性研究", 《功能材料》 * |
| 鲁嘉等: "磁流变阻尼器的力学设计及试验研究", 《功能材料》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233999A (en) * | 2013-05-05 | 2013-08-07 | 吉林大学 | Piston assembly capable of achieving flow compensation |
| CN103267159A (en) * | 2013-05-05 | 2013-08-28 | 吉林大学 | Double-acting magneto-rheological pressure and flow control valve |
| CN103233999B (en) * | 2013-05-05 | 2014-11-05 | 吉林大学 | Piston assembly capable of achieving flow compensation |
| CN108953461A (en) * | 2018-07-12 | 2018-12-07 | 河海大学常州校区 | A kind of in-line arrangement hydraulic damper |
| CN109236936A (en) * | 2018-11-11 | 2019-01-18 | 华东交通大学 | A kind of MR damper being sealed using elastic metallic bellows |
| CN109236936B (en) * | 2018-11-11 | 2023-12-22 | 华东交通大学 | Magnetorheological damper sealed by elastic metal corrugated pipe |
| CN110228606A (en) * | 2019-05-16 | 2019-09-13 | 东南大学 | A kind of magnetorheological landing mechanism and way to play for time of repeatable buffering |
| CN111895025A (en) * | 2020-06-30 | 2020-11-06 | 河海大学常州校区 | Hydraulic damper with external leakage service prevention function |
| CN113757292A (en) * | 2021-09-16 | 2021-12-07 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
| CN113757292B (en) * | 2021-09-16 | 2022-11-11 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
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| Publication number | Publication date |
|---|---|
| CN102359536B (en) | 2015-12-16 |
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