CN202560922U - Double-rod shear-valve type magnetorheological damper with adjustable damping forces - Google Patents
Double-rod shear-valve type magnetorheological damper with adjustable damping forces Download PDFInfo
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- CN202560922U CN202560922U CN2012202068289U CN201220206828U CN202560922U CN 202560922 U CN202560922 U CN 202560922U CN 2012202068289 U CN2012202068289 U CN 2012202068289U CN 201220206828 U CN201220206828 U CN 201220206828U CN 202560922 U CN202560922 U CN 202560922U
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Abstract
The utility model discloses a double-rod shear-valve type magnetorheological damper with adjustable damping forces. The magnetorheological damper comprises a double-rod hydraulic cylinder, a sleeve and connection heads, the inner cavity of the double-rod hydraulic cylinder is provided with magnetorheological fluids, the double-rod hydraulic cylinder comprises a cylinder body, a piston arranged inside the cylinder body and piston rods which are arranged on two sides of the piston, end covers are arranged on the cylinder body, the piston rods penetrate through the end covers to extend out of the cylinder body, and the two end covers are installed at two ends of the cylinder body respectively; a field coil is wound in the middle of the piston, and a gap is arranged between the piston and the inner wall of the cylinder body and used for the magnetorheological fluids to flow between two cavities; and one end of the double-rod hydraulic cylinder is provided with the sleeve, an output end of one piston rod is disposed in the sleeve, one connection head is arranged at one end of the sleeve, the end of the sleeve is far away from the hydraulic cylinder, simultaneously, one end of the other piston rod is provided with one connection head, and the end of the other piston rod is far away from the sleeve. Compared with magnetorheological dampers in prior art, the magnetorheological damper has the advantages of being simple in structure and good in manufacturability and sealing property.
Description
Technical field
The utility model relates to a kind of passive energy dissipation device, is a kind of MR damper specifically, especially relates to the adjustable two rod shearing valve type magneto-rheological dampers of a kind of damping force.
Background technique
At present, bridge stay cable, vehicle suspension system, machinery pedestal all are to select damping element implementation structure vibration dampings such as hydraulic damper, rubber cushion assembly or MR damper for use basically.The damper damping force that hydraulic damper, rubber cushion assembly etc. are commonly used is unadjustable, in order to reach optimum effectiveness in vibration suppression, needs to design to different force status, causes the specification of damper many, and can't tackle the vibration under the complex working condition.MR damper through field coil is wherein imported dynamic current in real time, produces dynamic antivibration power based on magnetic rheology effect, and the size of dynamic current depends on the structure excitation that the external world causes, thereby can obtain best effectiveness in vibration suppression.The drag-line of cable stayed bridge is the heavily stressed member that a kind of rigidity is little, damping is little, and various types of vibrations take place easily, and the utility model is especially suitable.
Two outstretch pole magnetorheological dampers are compared single outstretch pole magnetorheological damper, and are simple in structure, and the damping force symmetry properties of output is better, relatively are applicable to occasions such as bridge stay cable vibration damping, vehicle suspension system vibration damping, machinery pedestal vibration damping.At present, domestic MR damper is not applied on structural engineering on a large scale, its reason be present stage the structure and the performance of MR damper be left to be desired: on the one hand MR damper is had relatively high expectations to anufacturability; On the other hand, the damper product also should have reliability and sealability preferably.
So need further improvement badly, the applicant improves damper, and has obtained substantial progress and achievement through test for a long time.
The model utility content
To existing two outstretch pole magnetorheological damper complicated in mechanical structure, deficiency such as anufacturability is relatively poor, sealability is not good enough; The utility model provides a kind of simple in structure, two rod shearing valve type magneto-rheological dampers that the damping force of anufacturability and favorable sealing property is adjustable.
For reaching above purpose; The utility model is realized through following technological scheme: two rod shearing valve type magneto-rheological dampers that a kind of damping force is adjustable; Comprise two rod oil hydraulic cylinders, sleeve and connecting head, said pair of rod oil hydraulic cylinder inner chamber has magnetic flow liquid, and the said pair of rod oil hydraulic cylinder comprise cylinder body, be arranged at the piston of cylinder interior and be arranged at the piston rod on piston both sides; Cylinder body is provided with end cap; Said piston rod passes end cap and stretches out in outside the cylinder body, and said end cap is provided with two, is installed on the two ends of cylinder body respectively; Said piston middle part is wound with field coil, and piston and inboard wall of cylinder block are provided with the gap and supply that magnetic flow liquid is round to flow in two chambers; A wherein termination of said pair of rod oil hydraulic cylinder is provided with sleeve, and the piston rod output terminal places in the sleeve, and sleeve is provided with connecting head away from a termination of oil hydraulic cylinder, is provided with connecting head equally on the other piston rod end away from sleeve simultaneously; The utility model is connected with vibrational structure through the connecting head at two ends.
As the further improvement of the utility model, said piston rod and the piston that is provided with connecting head is structure as a whole, and the piston rod of said sleeve one end is connected with piston through screw thread and sealing configuration.
As the further improvement of the utility model, the piston rod of described sleeve one end is the center communicating structure, in ampere wires is housed, be connected with field coil in the piston.
As the further improvement of the utility model, described field coil surface is provided with protective layer, is provided with the gap between cylndrical surface that piston outer wall, coil protect layer are combined to form and the inboard wall of cylinder block and supplies magnetic flow liquid to come and go to flow in two chambers.
As the further improvement of the utility model, be provided with the static seal circle between described two end cap and the cylinder body and realize sealing, be provided with dynamic seal ring between two end cap and the piston rod and realize sealing.
Through gathering the structure excitation that the external world causes, obtain real-time current feedback through the piston rod inside conductor into the field coil input, make MR damper produce dynamic damping force, can obtain best effectiveness in vibration suppression.
The utility model is simple in structure, and anufacturability and favorable sealing property have following characteristics simultaneously:
1, drawn in the said MR damper/piston rod and the piston of pressure is an integral body; The piston rod of the other end band center hole is connected with piston through screw thread and corresponding sealing configuration; Avoided the threaded connection place directly to bear pulling force; Further improve its safety reliability, make the sealing of piston rod and piston joint more reliable.
2, the cylinder body of said MR damper is sealed by the end cap of two band seal rings, and the static seal between cylinder body and end cap is realized through seal ring, and corresponding dynamic seal ring then is installed between piston rod and end cap, can obtain excellent sealing performance.
3, magnetic flow liquid injects in the cylinder body through the can hole on one of them end cap, effectively the can magnetic flow liquid.
4, said MR damper cylinder body one end is connected with sleeve, and sleeve links to each other with engineering structure through connecting head with the piston rod that the other end stretches out.
Description of drawings
Fig. 1 is an embodiment's of model utility a structural representation.
Embodiment
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Present embodiment as shown in Figure 1 proposes the adjustable two rod shearing valve type magneto-rheological dampers of a kind of damping force; Comprise two rod oil hydraulic cylinders 1, sleeve 2 and connecting head 3; Said pair of rod oil hydraulic cylinder 1 inner chamber has magnetic flow liquid 4; The said pair of rod oil hydraulic cylinder 1 comprise cylinder body 11, be arranged at the inner piston 12 of cylinder body 11 and be arranged at the piston rod (left side piston rod 13 and the right piston rod 14 of being respectively as shown in the figure) on piston 12 both sides, and cylinder body 11 is provided with end cap 15, and said piston rod passes end cap 15 and stretches out in outside the cylinder body 11; Said end cap 15 is provided with two, is installed on the two ends of cylinder body 11 respectively; Said piston 12 middle parts are wound with field coil 5, and field coil 5 surfaces are provided with protective layer, have certain clearance to supply magnetic flow liquid to come and go between cylndrical surface that piston outer wall, coil protect layer are combined to form and the inboard wall of cylinder block and flow in two chambers; A wherein termination of said pair of rod oil hydraulic cylinder 1 is provided with sleeve 2; The right as shown in the figure piston rod 14 output terminals place in the sleeve 2; Sleeve is provided with connecting head 3 away from a termination of oil hydraulic cylinder, is provided with connecting head 3 equally on left side piston rod 13 terminations away from sleeve simultaneously; The utility model is connected with vibrational structure through the connecting head at two ends.
As the further improvement of present embodiment, the said left side piston rod 13 that is provided with connecting head is structure as a whole with piston 12, and the right piston rod 14 of said sleeve 2 one ends is connected with piston 12 through screw thread and sealing configuration.
As the further improvement of present embodiment, the right piston rod 14 of described sleeve 2 one ends is the center communicating structure, in ampere wires 6 is housed, be connected with field coil 5 in the piston.
As the further improvement of present embodiment, be provided with the static seal circle between described two end cap 15 and the cylinder body 11 and realize sealing, be provided with dynamic seal ring between two end cap 15 and the piston rod and realize sealing.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (5)
1. two rod shearing valve type magneto-rheological dampers that damping force is adjustable is characterized in that, comprise two rod oil hydraulic cylinders, sleeve and connecting head; Said pair of rod oil hydraulic cylinder inner chamber has magnetic flow liquid; The said pair of rod oil hydraulic cylinder comprise cylinder body, be arranged at the piston of cylinder interior and be arranged at the piston rod on piston both sides, and cylinder body is provided with end cap, and said piston rod passes end cap and stretches out in outside the cylinder body; Said end cap is provided with two, is installed on the two ends of cylinder body respectively; Said piston middle part is wound with field coil, and piston and inboard wall of cylinder block are provided with the gap and supply that magnetic flow liquid is round to flow in two chambers; A wherein termination of said pair of rod oil hydraulic cylinder is provided with sleeve, and the piston rod output terminal places in the sleeve, and sleeve is provided with connecting head away from a termination of oil hydraulic cylinder, is provided with connecting head equally on the other piston rod end away from sleeve simultaneously.
2. the two rod shearing valve type magneto-rheological dampers adjustable like claim 1 damping force is characterized in that said piston rod and the piston that is provided with connecting head is structure as a whole, and the piston rod of said sleeve one end is connected with piston through screw thread and sealing configuration.
3. like claim 1 or 2 one kind of two rod shearing valve type magneto-rheological damper that damping force is adjustable, it is characterized in that the piston rod of described sleeve one end is the center communicating structure, in ampere wires is housed, be connected with field coil in the piston.
4. the two rod shearing valve type magneto-rheological dampers adjustable like claim 1 damping force; It is characterized in that; Described field coil surface is provided with protective layer, is provided with the gap between cylndrical surface that piston outer wall, coil protect layer are combined to form and the inboard wall of cylinder block and supplies magnetic flow liquid to come and go to flow in two chambers.
5. the two rod shearing valve type magneto-rheological dampers adjustable like claim 1 damping force is characterized in that, are provided with the static seal circle between described two end cap and the cylinder body and realize sealing, are provided with dynamic seal ring between two end cap and the piston rod and realize sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202068289U CN202560922U (en) | 2012-05-10 | 2012-05-10 | Double-rod shear-valve type magnetorheological damper with adjustable damping forces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202068289U CN202560922U (en) | 2012-05-10 | 2012-05-10 | Double-rod shear-valve type magnetorheological damper with adjustable damping forces |
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| Publication Number | Publication Date |
|---|---|
| CN202560922U true CN202560922U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202068289U Expired - Fee Related CN202560922U (en) | 2012-05-10 | 2012-05-10 | Double-rod shear-valve type magnetorheological damper with adjustable damping forces |
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| CN (1) | CN202560922U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758032A (en) * | 2014-02-11 | 2014-04-30 | 株洲时代新材料科技股份有限公司 | Hydraulic damping device capable of sliding in direction perpendicular to axial direction |
| CN104595410A (en) * | 2015-01-09 | 2015-05-06 | 宁波大学 | Method for improving sealing property of magnetorheological shock absorber |
| CN105952834A (en) * | 2016-07-15 | 2016-09-21 | 北京机械设备研究所 | Shear valve type magnetorheological damper and parameter optimization method thereof |
| CN108422258A (en) * | 2018-03-13 | 2018-08-21 | 哈尔滨理工大学 | A kind of intelligent vibration damping platform for splicing mold processing |
| CN110388404A (en) * | 2019-08-27 | 2019-10-29 | 华东交通大学 | A kind of shearing-type magnetic rheological liquid damper |
-
2012
- 2012-05-10 CN CN2012202068289U patent/CN202560922U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758032A (en) * | 2014-02-11 | 2014-04-30 | 株洲时代新材料科技股份有限公司 | Hydraulic damping device capable of sliding in direction perpendicular to axial direction |
| CN103758032B (en) * | 2014-02-11 | 2015-12-09 | 株洲时代新材料科技股份有限公司 | A kind of hydraulic damping device at vertical axial with sliding function |
| CN104595410A (en) * | 2015-01-09 | 2015-05-06 | 宁波大学 | Method for improving sealing property of magnetorheological shock absorber |
| CN105952834A (en) * | 2016-07-15 | 2016-09-21 | 北京机械设备研究所 | Shear valve type magnetorheological damper and parameter optimization method thereof |
| CN108422258A (en) * | 2018-03-13 | 2018-08-21 | 哈尔滨理工大学 | A kind of intelligent vibration damping platform for splicing mold processing |
| CN110388404A (en) * | 2019-08-27 | 2019-10-29 | 华东交通大学 | A kind of shearing-type magnetic rheological liquid damper |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20200510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |