CN204004154U - A kind of shearing bitubular magneto-rheological vibration damper - Google Patents
A kind of shearing bitubular magneto-rheological vibration damper Download PDFInfo
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- CN204004154U CN204004154U CN201420452898.1U CN201420452898U CN204004154U CN 204004154 U CN204004154 U CN 204004154U CN 201420452898 U CN201420452898 U CN 201420452898U CN 204004154 U CN204004154 U CN 204004154U
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Abstract
A kind of shearing bitubular magneto-rheological vibration damper, comprise shear plate and down cut plate, upper shear plate is connected with vehicle frame, down cut plate is connected with vibrating wheels, the receiving cavity that has a four sides plate enclosing to form on down cut plate, the top of receiving cavity is provided with top board, top board middle part offers an opening slot, receiving cavity is left receiving cavity, right receiving cavity from the both sides of opening slot, in left receiving cavity and right receiving cavity, be respectively arranged with a piston cylinder, in piston cylinder, be filled with magnetic rheological liquid, the cylinder cap sealing of piston cylinder opening with seal ring; The two ends of one through rod put in respectively in the piston cylinder of left receiving cavity and right receiving cavity, and the two ends of through rod are wound with magnetic coil; The middle part of upper shear plate is extended with connecting rod downwards, and connecting rod is connected with the middle part of through rod.The utility model has been realized vibratory roller one-level vibration damping district, can realize according to demand damping adjustable.
Description
Technical field
The utility model relates to vehicle vibration damping equipment technical field, and specifically, the utility model relates to a kind of shearing bitubular magneto-rheological vibration damper.
Background technique
When magneto-rheological vibration damper is in running order, under steel wheel state of equilibrium, displacement is zero, and speed is zero, and the elastic force of spring just equals the gravity of vehicle frame, and damping force is zero.When vibration steel wheel is upwards vibrated by equilibrium position, steel wheel speed changes to minimum from maximum, and excitation force and velocity reversal, change from small to big, and steel wheel is to impact to vibration damper with larger inertia.By the adjusting of magnetic intensity, make damping force become large, it is large that spring force becomes gradually along with the increase of distortion, spring and damping absorb from steel wheel the impact energy to vehicle frame, and vehicle frame is because of its great quality, larger inertia, so when spring and damping impact-absorbing, self vibrates minimum.On the contrary, when steel wheel is vibrated downwards by equilibrium position, damping is adjusted to minimum, with the stretching, extension of spring, supplements the space of stretching out, and the weight of the elastic force of spring and damping force balance frame makes the displacement of vehicle frame minimum.From extreme higher position to equilibrium position, the vibration from extreme lower position to equilibrium position is also same reason to steel wheel.Generally speaking, vibration damper is the flexibly jointed chain place between vehicle frame and steel wheel.
In vibratory roller, to introduce vibration on the one hand, make vibrating wheels produce excitation force, by vibrating better compacted subgrade, and farthest utilize the energy vibrating; To take vibration damping on the other hand, by vibration damper, reduce the transmission of vibrating wheels to vehicle frame and seat vibration energy.That is to say, we will reduce the constraint to vibrating wheels, reduce its damping force, improve vibration efficiency, strengthen simultaneously get on the bus and vibrating wheels between effectiveness in vibration suppression, make its less transmitting vibrations.
Conventionally, vibration damping is by suppressing the methods such as vibration source intensity, vibration isolation, weakening, reducing oscillating body to the transmission of damping body vibrational energy.Concrete vibration attenuation mechanism is as follows:
A, inhibition vibration source intensity.For example, high speed rotor is carried out to perfect dynamic balancing, reduce the excitation force that its unbalance mass, produces.Or, road surface is spread smoothly as far as possible, alleviate its excitation to motion wheel.Reduce in addition the wind-exposuring area of tall building. alleviate the wind that it bears and carry.All these is the technical measures that suppress vibration source intensity.
B, vibration isolation.Between vibration source and damping body, inject soft liner, rely on its distortion to alleviate the excitation of vibration source to damping body, be commonly referred to vibration isolation.Device for vibration isolation is called vibration isolator.For example, the pneumatic tire of automotive wheel outer rim, the wooden unit basis under plummet base, the foamed plastics packings in instrumentation package case etc., are all common vibration isolators.
C, weakening.Additional special device on damping body, relies on it and damping body to interact, and absorbs the kinetic energy of vibration system.Thereby reduce the ocsillator strenght of damping body, weakening that Here it is.Device for weakening is called vibration absorber.For example, stick on the high damping rate viscoelastic material in both firewall, the movable mass that is arranged on high flexible top of building is all vibration absorber.
Along with progress and the raising of people to effectiveness in vibration suppression requirement of technology, vibration damping theory turns to active damping from passive insulation.And all vibration damping modes are all from 2 points (K, rigidity; C, damping) incision.MR damper has good quality, and its characteristic is as follows:
1) damping force is large; 2) damping is adjustable, and regulation range is wide; 3) thermal adaptability is strong, good environmental adaptability; 4) fast response time; 5) energy consumption is low; 6) efficient; 7) long service life; 8) feature such as easy to maintenance, not only can be used as conventional passive energy dissipator but also be half desirable ACTIVE CONTROL driver.
In view of rheological properties and the MR damper fine quality of magnetic converting technique uniqueness, thus magnetic converting technique is introduced to the vibration damping aspect of vibratory roller, to replace the nonadjustable shortcoming of current rubber shock absorber damping.
The vibration damper of prior art comprises following:
(1) rubber shock absorber: conventionally, the material of the rubber shock absorber that vibratory roller uses has two kinds, the one, natural rubber, another-kind be nitrile butadiene rubber.The vibration damper that natural rubber is made has good mechanical property, easy to process, has good elasticity, stability and resistance to property at sunshine.Therefore, the vibration damper of some vibratory rollers is used natural rubber manufacture.But natural rubber damping is little, not bery safe during by resonance region.When by resonance region, the amplitude of getting on the bus of vibratory roller is very large.In addition, the oil resistance of natural rubber is poor, and after the vibration damper contact greasy dirt of vibratory roller, rubber deforms, and follows the string, and severe patient vibration damper will be scrapped.In light of this situation, use at present vibration damper that natural rubber manufactures seldom.Nitrile butadiene rubber has good oil resistance and the larger advantages such as damping, is the material of good manufacture vibration damper.At present, the vibration damper of vibratory roller adopts nitrile butadiene rubber manufacture widely, but the price comparison of nitrile butadiene rubber is high.Present market is exactly rubber shock absorber use, and the shortcoming of technological scheme rubber shock absorber is as follows: 1) high temperature resistant, poor performance at low temperatures; 2) resistance to sunshine poor performance; 3) oil resistance is poor; 4) working life low, after long-term use, elasticity reduces, damping property variation; 5) damping is non-adjustable; 6) damping efficiency is low; 7) non-renewable, not environmental protection etc.
(2) for listed technical problem, applicant proposes a kind of magnetorheological-rubber combined shearing type MR vibration damper in early stage, and obtain the mandate of utility model patent mandate utility model patent (utility model patent number: 200810070631.5, notice of authorization number: CN101235864).
The One-Dimension Magnetic rheological damper of take is carried out the design of shearing type MR vibration damper as starting point, vibration damper is mainly comprised of front and back side plate, piston rod, cylinder body, rubber and accessory, wherein piston rod and a side plate are fixed, cylinder body is fixed by rubber and another piece side plate, rubber is used for producing damping on the one hand, plays a part on the other hand to shear to reset; The biside plate of vibration damper is connected with two parts treating vibration damping equipment respectively.When vibration damper is worked, biside plate, along cylinder body axial direction parallel, makes to produce relative movement between piston rod and cylinder body, by changing the operating current of drive coil on piston rod, change the magnetic intensity of field circuit, realize the adjustable of absorber damping force size.
Prior art scheme (2) is owing to being magnetorheological-building rubber compound, so also there is to a certain extent above-mentioned other shortcoming except " 5) damping non-adjustable ".
Model utility content
The purpose of this utility model is to provide a kind of damping adjustable power and application conditions magneto-rheological vibration damper widely, controls the variation of damping force by the change of magnetic intensity, carries out half ACTIVE CONTROL of vibration system.
The technological scheme that the utility model provides is: a kind of shearing bitubular magneto-rheological vibration damper, comprise shear plate and down cut plate, upper shear plate is connected with vehicle frame, down cut plate is connected with vibrating wheels, the receiving cavity that has a four sides plate enclosing to form on described down cut plate, the top of receiving cavity is provided with top board, top board middle part offers an opening slot, receiving cavity is left receiving cavity from the both sides of opening slot, right receiving cavity, in left receiving cavity and right receiving cavity, be respectively arranged with a piston cylinder, in piston cylinder, be filled with magnetic rheological liquid, the cylinder cap sealing of piston cylinder opening with seal ring, the two ends of one through rod put in respectively left receiving cavity and the right side has in the piston cylinder of receiving cavity, and the two ends of through rod are wound with magnetic coil, the middle part of upper shear plate is extended with connecting rod downwards, and connecting rod is connected with the middle part of through rod, upper shear plate under the effect of connecting rod and through rod, with respect to down cut plate planar do longitudinally, the laterally motion of twocouese.
Between described piston cylinder and receiving cavity, be filled with block rubber.
The both sides that described upper shear plate is positioned at connecting rod are provided with the spacing guide rib that can slide at opening slot.
The middle part of described through rod is provided with an assembly department, and assembly department is provided with a mounting hole, and the end of connecting rod passes mounting hole, and is connected and fixed by screw nut.
The four sides plate enclosing of described receiving cavity is that three faces are wholely set, one side is connected to form with screw is dismountable for mobile plate.
The utlity model has following advantage:
The utility model has been realized vibratory roller one-level vibration damping district, can realize according to demand damping adjustable; The utility model is comprised of two piston cylinders, and reliable regulation and control variable damping force can be provided, like this can be for magnetic flow liquid provides the region of change of magnetic field strength in a big way, and magnetic circuit efficiency improves greatly.
(1) working plane is upper shear plate, in the horizontal direction bidirectional-movement;
(2) two piston cylinder co-operation, contrary working state is a compression, a stretching, and larger and more stable damping-force adjustable is provided;
(3) reduce rubber use amount, more utilize magneto-rheological fluid characteristic, stable performance, reliable.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, does not form to improper restriction of the present utility model, wherein:
Fig. 1 is external structure stereogram of the present utility model;
Fig. 2 is longitudinal section of the present utility model sectional view;
Fig. 3 is cross section view of the present utility model.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
In conjunction with Fig. 1, Fig. 2 and Fig. 3, the utility model is described in detail as follows:
A kind of shearing bitubular magneto-rheological vibration damper of the present utility model, comprise shear plate 1 and down cut plate 2, upper shear plate 1 is connected with vehicle frame, down cut plate 2 is connected with vibrating wheels, the receiving cavity 20 that has a four sides plate enclosing to form on down cut plate 2, the top of receiving cavity 20 is provided with top board 21, top board 21 middle parts offer an opening slot 22, receiving cavity 20 is left receiving cavity 201 from the both sides of opening slot 22, right receiving cavity 202, in left receiving cavity 201 and right receiving cavity 202, be respectively arranged with a piston cylinder 3, in piston cylinder 3, be filled with magnetic rheological liquid 30, cylinder cap 31 sealings of piston cylinder 3 openings with seal ring, the two ends of one through rod 32 put in respectively left receiving cavity 201 and the right side has in the piston cylinder 3 of receiving cavity 202, and the two ends of through rod 32 are wound with magnetic coil 33, between piston cylinder 3 and receiving cavity 20, are filled with block rubber 4, the middle part of upper shear plate 1 is extended with connecting rod 10 downwards, connecting rod 10 is connected with the middle part of through rod 32, concrete connection is, the middle part of through rod 30 is provided with an assembly department 34, assembly department 34 is provided with a mounting hole 35, the end of connecting rod 10 passes mounting hole 35, and is connected and fixed by screw nut 36, upper shear plate 1 under the effect of connecting rod 10 and through rod 32, with respect to down cut plate 2 planar do longitudinally, the laterally motion of twocouese.The both sides that upper shear plate 1 is positioned at connecting rod 10 are provided with can be in the spacing guide rib (not shown) of opening slot 22 slips.
Wherein, the four sides plate enclosing 5 of receiving cavity 20 is that three faces are wholely set, use screw 51 is dismountable is connected to form for mobile plate 50 for one side.
During assembling, first by magnetic coil 33, magnetic rheological liquid 30, left, piston cylinder 3, right cylinder cap 31 assembles, upper shear plate 1 and two screw nuts 36 of use that assemble are before connected.Block rubber 4 is loaded on to down cut plate 1, is loaded on shear plate 2, piston cylinder system, refills another piece block rubber, finally four screws 51 of the mobile plate of enclosing 5 50 use is loaded onto.
Working procedure is:
Upper shear plate 1 and road roller frame fixed-link, down cut plate 2 links with vibration wheel of road roller, and vibrating wheels produces the energy of vibration force through the scaled frame that is delivered to of damper action, reaches damping effect.Vibrating wheels is different according to different road conditions vibration frequencies, according to frequency shift magnetic coil 33 size of current of vibration, thereby changes magnetic intensity, reaches the state that changes magnetic flow liquid, changes damping, reaches effectiveness in vibration suppression.Structure according to figure is known, and vibration source is delivered to piston by the connecting rod 10 of upper shear plate 1, and on shear plate 1, the working state of two piston cylinders of vibration damper is contrary during down cut, a compression, a stretching.By through rod 32, contact with magnetic flow liquid 30 dampings the object that reaches vibration damping, block rubber 4 is mainly to keep the position degree of piston cylinder 3 and certain effectiveness in vibration suppression, and through rod 32 acts on shear plate 1, reduces frame vibration amplitude.
The explanation of above example is just for helping to understand core concept of the present utility model; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (5)
1. a shearing bitubular magneto-rheological vibration damper, comprise shear plate and down cut plate, upper shear plate is connected with vehicle frame, down cut plate is connected with vibrating wheels, it is characterized in that, the receiving cavity that has a four sides plate enclosing to form on described down cut plate, the top of receiving cavity is provided with top board, top board middle part offers an opening slot, receiving cavity is left receiving cavity, right receiving cavity from the both sides of opening slot, in left receiving cavity and right receiving cavity, be respectively arranged with a piston cylinder, in piston cylinder, be filled with magnetic rheological liquid, the cylinder cap sealing of piston cylinder opening with seal ring; The two ends of one through rod put in respectively left receiving cavity and the right side has in the piston cylinder of receiving cavity, and the two ends of through rod are wound with magnetic coil; The middle part of upper shear plate is extended with connecting rod downwards, and connecting rod is connected with the middle part of through rod; Upper shear plate under the effect of connecting rod and through rod, with respect to down cut plate planar do longitudinally, the laterally motion of twocouese.
2. a kind of shearing bitubular magneto-rheological vibration damper according to claim 1, is characterized in that, between described piston cylinder and receiving cavity, is filled with block rubber.
3. a kind of shearing bitubular magneto-rheological vibration damper according to claim 1, is characterized in that, the both sides that described upper shear plate is positioned at connecting rod are provided with the spacing guide rib that can slide at opening slot.
4. a kind of shearing bitubular magneto-rheological vibration damper according to claim 1, it is characterized in that, the middle part of described through rod is provided with an assembly department, and assembly department is provided with a mounting hole, the end of connecting rod passes mounting hole, and is connected and fixed by screw nut.
5. a kind of shearing bitubular magneto-rheological vibration damper according to claim 1, is characterized in that, the four sides plate enclosing of described receiving cavity is that three faces are wholely set, one side is connected to form with screw is dismountable for mobile plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452898.1U CN204004154U (en) | 2014-08-12 | 2014-08-12 | A kind of shearing bitubular magneto-rheological vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452898.1U CN204004154U (en) | 2014-08-12 | 2014-08-12 | A kind of shearing bitubular magneto-rheological vibration damper |
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| Publication Number | Publication Date |
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| CN204004154U true CN204004154U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420452898.1U Withdrawn - After Issue CN204004154U (en) | 2014-08-12 | 2014-08-12 | A kind of shearing bitubular magneto-rheological vibration damper |
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| CN (1) | CN204004154U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132091A (en) * | 2014-08-12 | 2014-11-05 | 福建工程学院 | Shearing type double-cylinder magneto-rheological damper |
| CN105041954A (en) * | 2015-07-19 | 2015-11-11 | 湖南城市学院 | Intelligent adjustable vibration reduction device |
| CN106838112A (en) * | 2017-03-27 | 2017-06-13 | 苏州市顺仪五金有限公司 | A kind of double end buffers coupling assembly |
-
2014
- 2014-08-12 CN CN201420452898.1U patent/CN204004154U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132091A (en) * | 2014-08-12 | 2014-11-05 | 福建工程学院 | Shearing type double-cylinder magneto-rheological damper |
| CN104132091B (en) * | 2014-08-12 | 2016-02-24 | 福建工程学院 | A kind of shearing bitubular magneto-rheological vibration damper |
| CN105041954A (en) * | 2015-07-19 | 2015-11-11 | 湖南城市学院 | Intelligent adjustable vibration reduction device |
| CN106838112A (en) * | 2017-03-27 | 2017-06-13 | 苏州市顺仪五金有限公司 | A kind of double end buffers coupling assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |