CN107985329A - Rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body - Google Patents
Rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body Download PDFInfo
- Publication number
- CN107985329A CN107985329A CN201711472324.5A CN201711472324A CN107985329A CN 107985329 A CN107985329 A CN 107985329A CN 201711472324 A CN201711472324 A CN 201711472324A CN 107985329 A CN107985329 A CN 107985329A
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- Prior art keywords
- node
- mandrel
- magnet exciting
- exciting coil
- magnetic rheology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000000518 rheometry Methods 0.000 title claims abstract description 53
- 238000004073 vulcanization Methods 0.000 claims description 4
- 230000005672 electromagnetic field Effects 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 23
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 206010023230 Joint stiffness Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/307—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating fluid springs
Abstract
The present invention discloses a kind of rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body, change the elasticity modulus of magnetic rheology elastic body by adjusting the size of impressed current to control elastic panel nodes axially and radially rigidity, so as to ensure train, elastic panel nodes offer greater stiffness travels to ensure that train is stablized at a high speed when driving on rectilinear orbit, on bend when driving, elastic panel nodes provide smaller rigidity to ensure that train has good curving performance to train.Including magnetic rheology elastic body, magnet exciting coil, node mandrel and node overcoat；Node mandrel is the axis body for having coil recess, and magnet exciting coil is wound in the groove of node mandrel to control magnetic field residing for magnetic rheology elastic body.One surface sulfide of magnetic rheology elastic body is on the node mandrel of non-recessed portion, another surface sulfide is on the inner wall of node overcoat.It is compact-sized simple, it is consistent with the original rubber nodal point structure of train, it is easy to accomplish and to substitute existing passive rubber nodal point on train, feasibility and highly practical.
Description
Technical field
It is more particularly to a kind of to be based on magnetic the present invention relates to the technical field of the rigidity tunable arrangement based on magnetic rheology elastic body
The rigidity adjustable fire axle box positioning elastic node of magnetorheological elastomer.
Background technology
The axle-box locating of train can have vital influence for the operation stability and traveling-capability in elbow of train.Fire
The axle-box locating mode of car mainly has a pivoted arm, drawing strickle guide formula, drawplate type, the positioning method of rod-pulling type and rubber element, above-mentioned several
Kind positioning method can realize good positioning action on the premise of correct design structure and selection Reasonable Parameters, simply exist
There is different on its performance quality and durability during use.Have in above-mentioned most positioning methods one it is very important fixed
Bit unit, exactly one is positioning rubber node.Rubber nodal point is for connection to framework and axle box connecting rod, or the dress of axle box swivel arm
Put.The relative displacement that the use of this rubber nodal point can limit vertical and horizontal between axle box and framework realizes that elasticity is fixed at the same time
Position.
In train design process, the selection of the rigidity of rubber nodal point have to the critical speed and traveling-capability in elbow of train to
Close important influence.Influence of the rigidity of rubber nodal point for critical speed and curving performance is entirely opposite.Setting
It is also conflicting in meter.On the one hand, less wheel can enable longitudinal rigidity train to obtain good traveling-capability in elbow, together
When the wheel rail force of train, wheel-rail wear and wheel-rail noise can be greatly lowered.So, when train travels on curve
When, using self- steering effect, take turns to can radially adjust, so as to reduce the curve negotiating that wheel rim improves the angle of attack of track on vehicle
Performance.On the other hand.Modern walking mechanism must reach the high-speed cruising speed of 200km/h or higher.So, just need
Ensure stability of the train when running at high speed.Determine the longitudinal direction that the stability run at high speed just needs to improve wheel pair as far as possible
Position rigidity stringent to keep the parallel of two wheels.In conclusion the design of Rubber joint stiffness is most important, while rigidity is not
Variable passive rubber nodal point is difficult to meet that negotiation of bends and straight-line travelling are required for the difference of Rubber joint stiffness at the same time again.
Pass through above-mentioned analysis, it can be deduced that, exploitation is a kind of intelligent, and the adjustable rubber nodal point of rigidity is for improving train
High stability and curve negotiating are most important.To solve this problem, the present invention proposes one kind and is based on magnetorheological elasticity
The adjustable train elastic rubber node of rigidity of body.Magnetic rheology elastic body is a kind of adjustable intellectual material of rigidity.Additional
Under conditions of different magnetic field, magnetic rheology elastic body can be quick, and reversible changes the rigidity of its own.This material is straight to solve
The perfect solution that road and bend provide the different-stiffness demand of rubber nodal point.The adjustable bullet of rigidity that the present invention designs
Property node larger longitudinal rigidity can be provided for the train run at high speed to ensure its stability, while can be to reduce train
Longitudinal register rigidity improve its curving performance.
The content of the invention
Existing passive type rubber nodal point can not meet train driving on bend and straight way to node locating rigidity not
With requirement, it is an object of the present invention to provide a kind of flexibly positioned node of variable rigidity to solve the problems, such as this.When vehicle high-speed row
When sailing, node provides larger locating stiffness, when vehicle low speed passes through bend, there is provided less wheel is to locating stiffness.
The present invention is achieved by the following technical solutions：
Rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body, including magnetic rheology elastic body, excitation
Coil, node mandrel one and node overcoat；Wherein,
Node mandrel one is the axis body for having coil recess；
Magnet exciting coil is wound in the groove of node mandrel one；
The inner surface of magnetic rheology elastic body vulcanizes on the non-recessed face of node mandrel one, and outer surface vulcanizes in node overcoat
Inner surface on, the stiffness characteristics of magnetic rheology elastic body are by solenoid controlled；The magnet exciting coil is wound on node mandrel one
Groove in, the intensity of electromagnetic field caused by electromagnetic coil is controlled by the size of impressed current, and node mandrel one is installed on section
In point overcoat, make node compact-sized.
Wherein, the magnetorheological elasticity is has certain thickness cylindrical surface, installed in node mandrel one and node overcoat
Between, and connected firmly node mandrel one, node overcoat and magnetic rheology elastic body integrally by vulcanizing treatment.
Rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body, including magnetic rheology elastic body, excitation
Coil, node mandrel two and node overcoat, the also magnet exciting coil with coil recess are around body and a root node mandrel two；Excitation wire
Circle is wound on magnet exciting coil in the groove of body；
Magnet exciting coil is installed in node overcoat around body, and node mandrel two is installed on magnet exciting coil around internal portion, magnetorheological
The outer surface of elastomer and magnet exciting coil vulcanize around the inner surface of body, and the outer surface vulcanization of inner surface and node mandrel two connects firmly
Together.
Wherein, the magnet exciting coil is wound on magnet exciting coil on body, magnet exciting coil around body by with node overcoat interference
Coordinate to be fixed on node jacket internal；The magnetic rheology elastic body is has certain thickness cylindrical surface, installed in magnet exciting coil
Between body and node mandrel two, by vulcanizing treatment, whole node is connected into an entirety.
The principle of the present invention is：Present invention uses the controllable characteristic of magnetic rheology elastic body rigidity to design new rigidity
Adjustable train elastic panel nodes.The elastic panel nodes have two kinds of different structures to realize.In the first structure, elastic panel nodes by
Magnetic rheology elastic body, magnet exciting coil, node mandrel and node overcoat composition.Wherein, node mandrel is that special designing has a line
The axis body of groove is enclosed, magnet exciting coil is wound in the groove of node mandrel to control the magnetic field of magnetic rheology elastic body, so as to control section
The rigidity of point.On the node mandrel of non-recessed portion, another surface sulfide exists one surface sulfide of magnetic rheology elastic body
On the inner wall of node overcoat.In second of structure, elastic panel nodes include magnetic rheology elastic body, magnet exciting coil, node mandrel, node
Overcoat and magnet exciting coil are around body.Magnet exciting coil is wound on magnet exciting coil in the groove of body, and magnet exciting coil is installed on outside node around body
In set, node mandrel is installed on magnet exciting coil around internal portion, the interior table of the outer surface of magnetic rheology elastic body and magnet exciting coil around body
Face vulcanizes, and the outer surface vulcanization of inner surface and node mandrel connects firmly.By above two structure design, the locating stiffness of node can
With by adjusting the size of impressed current changing the elasticity modulus of magnetic rheology elastic body to control elastic rubber node axial and
Radial rigidity, so as to ensure that train elastic panel nodes in form on rectilinear orbit provide greater stiffness to ensure that train is stablized at a high speed
Traveling, on bend when driving, elastic panel nodes provide smaller rigidity to ensure that train has good traveling-capability in elbow energy to train.
Compared with the prior art, the present invention has the advantages of：
The present invention have devised a kind of adjustable train shaft of new rigidity using the controllable advantage of magnetic rheology elastic body rigidity
Case positioning node.This design disclosure satisfy that train vibration influence requires the difference of axle-box locating rigidity under different rail conditions.
Its durability requirements that specifically novel joint can provide big rigidity when train is run at high speed to meet, can be in fire
Car provides small rigidity to improve its curve negotiating when crossing bend.In addition, the appearance and size of new axle box guidance joint
It is essentially identical with installation dimension and the original positioning node of train, when installing and using novel joint, it is not required to do original design
Change, it is easy to accomplish, it is highly practical.Meanwhile the present invention is semi- active control, energy expenditure is small.
Brief description of the drawings
Fig. 1 is 1 structure diagram of embodiment of the present invention.
Fig. 2 is 2 structure diagram of embodiment of the present invention.
Fig. 3 is to carry out extension test result figure to rubber nodal point using universal material stretching-machine (MTS).
Reference numeral implication is in figure：1 is node overcoat, and 2 be magnet exciting coil, and 3 be magnetic rheology elastic body, and 4A is node core
Axis one, 4B are node mandrel two, and 5 be magnetic field, and 6 be magnet exciting coil around body, and 7 be pull rod.
Embodiment
Embodiment 1
As shown in Figure 1, the adjustable train axle box guidance joint of rigidity based on magnetic rheology elastic body, including magnetorheological bullet
Property body 3, magnet exciting coil 2, one 4A of node mandrel and node overcoat 1.One 4A of node mandrel is the axis for having coil recess
Body.The magnet exciting coil 2 is wrapped in the groove of one 4A of node mandrel.The magnetic rheology elastic body 3 is with certain thickness
Cylindrical tube shape structure.Tubular magnetic rheology elastic body 3 is inserted on one 4A of node mandrel of coiling.The excitation wire
Circle 2 can be single-stage coil, or multi-pole coils.One 4A of node mandrel for being cased with magnetic rheology elastic body 3 is carried out at vulcanization
Reason, enable magnetic rheology elastic body 3 and one 4A of node mandrel closely connect (can also be used other modes make one 4A of node mandrel and
Magnetic rheology elastic body 3 closely connects).One 4A of node mandrel for being cased with magnetic rheology elastic body 3 is finally installed to cylindrical shape node
In overcoat 1.And whole positioning node progress vulcanizing treatment is allowed into magnetic rheology elastic body 3 and 1 inner wall of node overcoat connects firmly that (other are solid
Connection mode also can).The one 4A length of node mandrel of the axle box guidance joint is more than 1 length of node overcoat.One 4A of node mandrel
Both ends are reached outside node overcoat 1.Connected by hinged with framework.The node overcoat 1 of positioning node by weld etc. mode and
Pivoted arm or the connection of the grade of pull rod 7.
When high vehicle speeds are when on rectilinear orbit, velocity information is passed to positioning node controller, node by vehicle
Controller sends high current control by judgement to node, produces magnetic field 5 as shown in Figure 1, at this moment, magnetic rheology elastic body is in magnetic
Under the action of, its own rigidity improves, so as to improve the rigidity of axle box guidance joint to ensure the stabilization of high vehicle speeds
Property.When vehicle is to be that axle box guidance joint controller collects vehicle speed on curve track compared with low velocity traveling, and according to
Speed carrys out the rigidity value needed for decision node, and small stiffness reliability is sent to positioning node.So as to ensure the curve negotiating of vehicle,
Reduce the wheel rim of train to the track angle of attack, wheel rail force and wheel-rail wear.
Embodiment 2
As shown in Fig. 2, the adjustable train axle box guidance joint of rigidity based on magnetic rheology elastic body, including magnetorheological elasticity
Body 3, magnet exciting coil 2, two 4B of node mandrel, node overcoat 1 and magnet exciting coil are around body 6.Two 4B of node mandrel should be used
High-permeability material.The magnetic rheology elastic body 3 is with certain thickness cylindrical tube shape structure.By tubular magnetic rheology elastic body
3 sets of two 4B of ingress mandrel.Two 4B of node mandrel for being cased with magnetic rheology elastic body is vulcanized, makes 3 He of magnetic rheology elastic body
Two 4B of node mandrel, which can be connected closely, (can also be used other modes two 4B of node mandrel and magnetic rheology elastic body 3 is closely connected
Connect).The magnet exciting coil around body 6 to have a reeded cylindrical-shaped structure, the magnet exciting coil 2 be wrapped in magnet exciting coil around
In the groove of body 6.The magnet exciting coil 2 can be single-stage coil, or multi-pole coils.It will be cased with magnetic rheology elastic body 3
Two 4B of node mandrel be nested into magnet exciting coil in the endoporus of body 6, and by this overall structure carry out vulcanizing treatment, make magnetic current
Become elastomer 3 and magnet exciting coil can closely connect around the inner wall of body 6 and (can also be used other modes to make two 4B of node mandrel and magnetic
Magnetorheological elastomer 3 closely connects).Finally the magnet exciting coil for being cased with magnetic rheology elastic body 3 is installed to outside cylindrical shape node around body 6
In set 1.The magnet exciting coil is interference fit around the fit system of body 6 and node overcoat 1.The section of the axle box guidance joint
Point two 4B length of mandrel is more than 1 length of node overcoat.Two sections of two 4B of node mandrel is reached outside node overcoat 1.By hinged and
Framework connects.The node overcoat 1 of positioning node is connected by modes such as welding with pivoted arm or the grade of pull rod 7.
The control mode of the positioning node (embodiment 2) is identical with the control mode of embodiment 1.Positioning node is led to
Collection speed is crossed, judges that the rigidity of axle box guidance joint is big or small according to the size of speed.
Fig. 3 is to carry out extension test result figure to rubber nodal point using universal material stretching-machine (MTS), and when experiment controls rubber
Glue node axial displacement is ± 0.2mm, vibration frequency 1Hz.Observation experiment when being passed through 2A, 1A, 0A exciting current as a result, correspond to
Connection stiffness magnitude relationship be 2A>1A>0A, when this explanation exciting current is larger, connection stiffness is larger.
Claims (4)
1. the rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body, it is characterised in that：Including magnetorheological bullet
Property body (3), magnet exciting coil (2), node mandrel one (4A) and node overcoat (1)；Wherein,
Node mandrel one (4A) is the axis body for having coil recess；
Magnet exciting coil (2) is wound in the groove of node mandrel one (4A)；
The inner surface of magnetic rheology elastic body (3) vulcanizes on the non-recessed face of node mandrel one (4A), and outer surface vulcanizes in node
On the inner surface of overcoat (1), the stiffness characteristics of magnetic rheology elastic body (3) are by solenoid controlled；The magnet exciting coil (2) around
In the groove of node mandrel one (4A), the intensity of electromagnetic field caused by electromagnetic coil is controlled by the size of impressed current, section
Point mandrel one (4A) is installed in node overcoat (1), makes node compact-sized.
2. the rigidity adjustable fire axle box positioning elastic node according to claim 1 based on magnetic rheology elastic body, it is special
Sign is：Is there are certain thickness cylindrical surface in described magnetorheological elastic (3), installed in node mandrel one (4A) and node overcoat
(1) between, and node mandrel one (4A), node overcoat (1) and magnetic rheology elastic body (3) are connected firmly into one by vulcanizing treatment
Body.
3. the rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body, it is characterised in that：Including magnetorheological bullet
Property body (3), magnet exciting coil (2), node mandrel two (4B) and node overcoat (1), also the magnet exciting coil with coil recess is around body
(6) and a root node mandrel two (4B)；Magnet exciting coil (2) is wound on magnet exciting coil in the groove of body (6)；
Magnet exciting coil is installed in node overcoat (1) around body (6), and node mandrel two (4B) is installed on magnet exciting coil in body (6)
Portion, the outer surface of magnetic rheology elastic body (3) and magnet exciting coil vulcanize around the inner surface of body (6), inner surface and node mandrel two
The outer surface vulcanization of (4B) connects firmly together.
4. the rigidity adjustable fire axle box positioning elastic node according to claim 3 based on magnetic rheology elastic body, it is special
Sign is：The magnet exciting coil (2) is wound on magnet exciting coil on body (6), magnet exciting coil around body (6) by with node overcoat
(1) it is interference fitted internal to be fixed on node overcoat (1)；The magnetic rheology elastic body (3) is pacified to there is certain thickness cylindrical surface
Mounted in magnet exciting coil between body (6) and node mandrel two (4B), by vulcanizing treatment, by whole node connect into one it is whole
Body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472324.5A CN107985329A (en) | 2017-12-29 | 2017-12-29 | Rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472324.5A CN107985329A (en) | 2017-12-29 | 2017-12-29 | Rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107985329A true CN107985329A (en) | 2018-05-04 |
Family
ID=62042150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711472324.5A Pending CN107985329A (en) | 2017-12-29 | 2017-12-29 | Rigidity adjustable fire axle box positioning elastic node based on magnetic rheology elastic body |
Country Status (1)
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| CN (1) | CN107985329A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252106A (en) * | 2020-01-20 | 2020-06-09 | 中车株洲电力机车有限公司 | Railway vehicle and bogie thereof |
| CN112874562A (en) * | 2021-02-03 | 2021-06-01 | 石家庄铁道大学 | Intelligent control method for node rigidity of rotating arm |
| CN113291346A (en) * | 2021-06-30 | 2021-08-24 | 中车株洲电力机车有限公司 | Axle box pull rod, bogie and control method thereof |
| CN114148364A (en) * | 2021-12-15 | 2022-03-08 | 中国科学技术大学 | Rigidity-controllable magnetorheological rubber node with failure safety characteristic |
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