CN105136487B - A kind of combined orbit wheel and cooling device - Google Patents
A kind of combined orbit wheel and cooling device Download PDFInfo
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- CN105136487B CN105136487B CN201510355828.3A CN201510355828A CN105136487B CN 105136487 B CN105136487 B CN 105136487B CN 201510355828 A CN201510355828 A CN 201510355828A CN 105136487 B CN105136487 B CN 105136487B
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Abstract
The present invention provides a kind of combined orbit wheel, including：Wheel body；At least two groups disc type track.The disc type track is fastenedly connected by key and bolt with the wheel body.A whole set of track wheel apparatus uses Split assembled structure, every group of disc type track is made of 2~4 valves, by axis pin and it is bolted integral, therefore after rail abrasion (as carried out magnetic rail braking experiment), it replaces at the scene of can be achieved, the availability for improving experimental rig saves maintenance, maintenance cost.The combined orbit wheel is suitable for eddy-current brake or the magnetic rail braking experimental rig of rail vehicle, especially suitable for bullet train eddy-current brake or magnetic rail braking 1:1 experiment.The present invention also provides a kind of and matching used cooling devices of the rail wheel, including：C-shaped or U jet pipes are evenly distributed with spray orifice towards rail side；Inlet pipeline；Connecting flange；Threeway；Flow control and measuring part.Cooling medium can be that water or other coolant liquids, flow can be automatically controled, and can realize the recycling of liquid.The cooling device is suitable for high-speed eddy retardation test, and when being used cooperatively with the rail wheel, test speed is up to 500km/h or more.
Description
Technical field
The present invention relates to a kind of combined orbit wheel and its cooling device, more particularly to a kind of combination with double track structure
Formula rail wheel and matching used cooling device.
Background technology
Rail wheel is one of the key core component of linear (track) eddy-current brake testing stand and magnetic rail braking testing stand, it
It is interacted with Breake Electromagnet with experiment, generates brake force, convert braking energy to heat and dissipate, realized and slow down and make
It is dynamic.
The rail wheel of general vortex or magnetic rail braking testing stand is simple in structure, and usually there are one disc tracks for tool, and
Using integral structure, system is vortexed as disclosed in China patent CN2415359Y (2001) and CN100395131C (2008)
Dynamic test platform, and external similar testing stand.This rail wheel can realize that the energy of eddy-current brake turns under certain condition
Change, but high temperature caused by being braked at a high speed under the same deceleration loading of train can not be born, is then difficult to solve for magnetic rail braking experiment
Certainly abrasion and replacement problem, therefore generally are only applicable to subscale test platform and middle slow-speed test, and cannot be satisfied at a high speed, it is high-power
1:1 test requirements document.
Eddy-current brake and magnetic rail braking are two kinds of auxiliary braking modes of rail traffic vehicles.Eddy-current brake utilizes magnetic induction
Principle when that is, metallic conductor moves in magnetic field, can induce current vortex in conductor, the magnetic field generated by current vortex makes original
Main field is distorted, and generates tangential brake force, realizes the braking of train without being in contact.According to structure type,
Linear (track) eddy-current brake and rotation (disc type) eddy-current brake two types can be divided into.Eddy-current brake with no mechanical wear,
Outstanding advantages of noiseless, odorlessness, controllable brake force, can be not only used for fast braking or emergency braking, and can be used for commonly using system
It is dynamic, braking distance can be reduced, improve travel safety, and the abrasion of mechanical braking can be reduced, performance driving economy is good.Linear whirlpool
Stream braking can play larger brake force in high-velocity section independent of wheel rail adhesion.Therefore, eddy-current brake be it is a kind of it is advanced,
Effective high-speed train braking mode, is applied on external bullet train at present.
Magnetic rail braking be by the electromagnet or permanent magnet on bogie, under the action of magnetic attraction with rail
Normal pressure is contacted and generated, then generates frictional force with Rail Surface when train operation, achievees the purpose that braking.Magnetic rail braking also belongs to
In non-adhesion braking mode, and brake magnet has cleaning effect to rail surface, and wheel rail adhesion coefficient is made to be increased slightly.But it
It is braking to be realized by the friction with rail, thus there are mechanical wears.Magnetic rail braking is widely used in visitor in foreign countries
On vehicle, EMU, locomotive and city rail vehicle, recent year city rail vehicle also begins to apply.
Eddy-current brake testing stand and magnetic rail braking testing stand be for eddy-current brake, the research of magnetic rail braking and performance test and
Design, the experimental rig built have the function of to drive speed governing, braking, control, data collection and analysis etc..Rail wheel be this two
The key core component of kind testing stand, it is to simulate the rail on actual track with disc track, bears to be applied by test specimen
The brake force added and resulting Wen Sheng, while the part as experiment inertia again, participate in the braking needed for simulation test
Quality.
Invention content
The object of the present invention is to provide a kind of rail wheels of double track fabricated structure, and carry special cooling device, both
It can be used for rail vehicle eddy-current brake testing stand, and can be used for magnetic rail braking testing stand, be vortexed and make especially suitable for bullet train
Dynamic or magnetic rail braking 1:1 experiment.
The present invention carries out comprehensive study in terms of heat transfer, mechanical strength and usability three, devises a kind of double track combined type
The rail wheel of structure can carry the cooling device of special designing.The rail wheel combines two disc types of installation on a wheel body
Track, and can realize that the scene of disc type track is replaced, preferably solve high speed braking heat dissipation, Breake Electromagnet arrangement and abrasion
The problems such as replacement, meets intensity requirement, can be with 1:1 reproduces braking energy conversion process.
Its basic principle is that the excircle part of rail wheel is designed according to the size and shape of standard rail head of rail, so as to mould
Intend practical rail, with experiment electromagnet interaction.Rail wheel is not only as the carrying of braking energy and transmitter, but also is examination
Test the component part of inertia.Therefore, larger thermal capacity and heat resistance should be possessed, there is high intensity and good move to put down again
Weigh performance, could realize high speed, high-power retardation test.
Carry out 1:When 1 high-seed-brake testing, braking energy is very big, these energy overwhelming majority need to rotate by track
It is melted into heat and distributes.Because braking energy and speed is square directly proportional, the raising of train speed often brings braking energy
Be significantly increased, so the heat generated also rapid growth therewith.Again because the perimeter of rail wheel is far smaller than on actual track
Rail it is long, braking process is in state constantly by " heating ", and eddy-current brake has " collecting skin " effect, not enough heat dissipations
Time, so generally will produce huge Wen Sheng.If increasing track wheel diameter, required turn with isometric heavy, is being tested
Dynamic inertia will be significantly increased, then the complexity of equipment and manufacturing expense will steeply rise, so track wheel diameter is by a fixed limit
It makes and can not choose at random, the improvement of rail wheel Wen Sheng is extremely limited.In addition, Breake Electromagnet needs are pacified along circuit orbit
The problems such as there is arrangement, adjustment difficulty in dress, test error is excessive because length is larger.
To realize bullet train vortex or magnetic rail braking 1:The purpose of 1 experiment, the technical solution adopted in the present invention are：Rail
Road wheel is designed to double track form, as shown in Fig. 1, i.e., a set of track wheel apparatus have two groups of disc type tracks, then diameter not
Perimeter doubles under conditions of change, and disc type track outer end face can design radiating ribs, therefore heat dissipation area greatly increases.
Breake Electromagnet can then be divided into two row arrangement and installation, respectively with two groups of track alignments.It is characterized in that：Package unit, which uses, to be divided
Body composite structure is at least made of wheel body, two groups of disc type tracks, connection bolt, key and axis pin.The wheel body is higher using intensity
Alloy steel material or thermal coefficient it is larger Cu alloy material manufacture；The disc type track uses with standard rail identical or phase
Close material manufacture, outer circular shape and size are consistent at the top of standard rail, by key and are bolted with the wheel body,
And carry check washer；Every group of disc type track is both designed as 2~4 valves, by axis pin and is bolted integral, rail abrasion
Live replacement can be conveniently realized after (such as carrying out multiple magnetic rail braking).
In addition, a set of forced cooling device has also been devised, it can be used for high-speed eddy retardation test process.It is mainly by C-shaped
Or U-shaped cooling spray pipe, inlet pipeline, connecting flange, threeway and fluid control and measuring part form.It is characterized in that：It is cooling
Nozzle Design is C-shaped or U-shaped, is arranged along disc type track circumference, and jet pipe is evenly distributed with spray orifice towards rail side, can be to rail by control
Wheel surface uniform spray cooling medium in road forms array jetting, control rail wheel Wen Sheng.Cooling medium can be water or other cold
But liquid, flow can pass through pump and liquid level gauge or liquid-level switch etc. by electric control valve, flowmeter and computer controlled automatic
The cycle of medium can be achieved.
The technique effect of the present invention is as follows：
Rail wheel undertakes braking energy conversion task, and the thermal energy overwhelming majority of generation is stored in rail wheel.Due to braking
Rail wheel " is heated " repeatedly in the process, thus general rail wheel temperature rise it is larger, especially high-speed test (HST) when braking energy it is very big,
It can lead to very high Wen Sheng, if without special designing, general material will be unable to bear.Double track combined orbit of the present invention
Wheel, identical in diameter, orbit circumference doubles, and can also design radiating ribs in disc type track end face, then dissipate
Hot area is significantly increased, therefore can bear higher braking energy, improves test speed.The effect of cooling device is to reinforce rail
The heat loss through convection of road wheel makes a large amount of thermal energy pass through the larger medium of cooling ratio and dissipates, effectively inhibits the Wen Sheng of rail wheel, because
This test speed is greatly improved.Simulation calculation shows that under the conditions of normal assays ventilating convection, the combined orbit wheel is extremely
19t axis weight, service braking of the speed up to 350km/h and the Wen Sheng caused by fast braking can be born less.Using the cooling dress
Under conditions of setting, then the high speed 1 of axis weight 19t, maximum speed 500km/h or more can be achieved:1 eddy-current brake is tested.
Carry out 1:When 1 retardation test, the length and width of experiment electromagnet should be with the electromagnet etc. of train actual use
Effect, conventional rails wheel can only will experiment electromagnet along a circular arc circumferentially, to electromagnet arrangement and air gap adjustment cause
Inconvenience, and suction measurement is inaccurate, causes test error larger.The present invention allows Breake Electromagnet point row arrangement and peace
Dress, it is corresponding with two groups of tracks respectively, electromagnet arc length and corresponding angle can be effectively reduced, the measurement for reducing vertical suction misses
Difference, and convenient for arrangement and adjustment, air gap is more uniform, can effectively improve the accuracy of experiment.
Since a whole set of track wheel apparatus uses Split assembled structure, every group of disc type track to be made of 2~4 valves, therefore
Rail abrasion (as carried out magnetic rail braking experiment) is afterwards, it can be achieved that scene replacement, improves the availability of experimental rig, save inspection
It repaiies, maintenance cost.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of combined orbit wheel；
Fig. 2 is rail wheel cooling device schematic diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
This patent is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention rail wheel mainly by disc type track 1, bolt 2, bolt 3, washer 4, check washer 5,
The compositions such as wheel body (core wheel) 6, key 7 and axis pin 8.Every group of disc type track is formed by for 2~4 valve sector tracks, passes through 2 He of bolt
Axis pin 8 links into an integrated entity.It is illustrated by taking the disc type track of two valves combination as an example below.Those skilled in the art will manage
Solution, technical scheme of the present invention are similarly applied to the situation of multigroup or more valve disc type tracks.
The outer circular shape and size of disc type track 1 are consistent at the top of China's standard rail.Wheel body 6 uses the higher conjunction of intensity
Golden Steel material or thermal coefficient it is larger Cu alloy material manufacture, disc type track 1 use actual track steel or ingredient, performance phase
Close alloy steel making.Wheel body 6 is located among two groups of disc type tracks 1, and disc type track 1 passes through key 7, bolt 3, washer 4 etc. and wheel
Body 6 securely connects, and transmits torque by key 7, check washer 5 is used for preventing bolt 3 from loosening.Every group of disc type track is by two valves sector
Track forms, and is connected by bolt 2 and axis pin 8 between two valves.To reinforce heat dissipation effect, the end face of disc type track 1 can be designed scattered
Hot muscle.Rail wheel processing, assembling finish, whole to carry out dynamic balance running, to meet high-speed cruising requirement.
As shown in Fig. 2, special cooling device has also been devised in the present invention, it to be used for high-speed eddy retardation test.The purpose is to
It carries out forcing cooling heat dissipation using the big cooling medium of the coefficient of heat transfer, even if in the case of ultrahigh speed braking and large inertia
Rail wheel temperature can be risen control within the allowable range.The key for realizing high efficiency and heat radiation is that cooling medium selection and cooling spray pipe are set
Meter, target is to form array jetting, equably impact tracks wheel surface, to obtain good heat transfer effect.It is of the present invention
Cooling device is by the control of cooling spray pipe 9, inlet pipeline 10, large flange 11, threeway 12, small flange 13 and fluid and measuring part etc.
Composition.Jet pipe 9 is designed as C-shaped or U-shaped, and spray orifice is evenly distributed with disc type track circumference face opposite side, and ensures the cooling of spray orifice outlet
Liquid reaches certain flow velocity.Cooling medium can be water or other cooling liquid, pass through fluid control and measuring part such as electricity
The achievable flow such as magnet valve, regulating valve, flowmeter, temperature sensor, liquid level gauge or liquid-level switch, pump automatically controlling and recycling
It uses.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of combined orbit wheel, which is characterized in that including：
Wheel body；
At least two groups disc type track is arranged in the wheel body both sides and is fixedly connected with the wheel body；
Further include cooling device, the cooling device includes C-shaped or U-shaped cooling spray pipe, and the cooling spray pipe is along the disc type rail
The circumference in road, and the side towards the disc type track is evenly distributed with spray orifice, can form array jetting.
2. combined orbit wheel as described in claim 1, which is characterized in that including at least two groups disc type track, by key and
Bolt is fixedly connected with the wheel body, and has check washer.
3. combined orbit wheel as claimed in claim 1 or 2, which is characterized in that every group of disc type track is by 2~4 valve sector rails
Road forms, and by axis pin and is bolted integral.
4. combined orbit wheel as claimed in claim 1 or 2, which is characterized in that including two groups of disc type tracks.
5. combined orbit wheel as claimed in claim 1 or 2, which is characterized in that the size and shape of the disc type track outer circle
Shape is consistent at the top of standard rail.
6. combined orbit wheel as described in claim 1, which is characterized in that the cooling device further includes pipeline, connection method
Blue, threeway and at least one of solenoid valve, electric control valve, flowmeter, temperature sensor, liquid level gauge or liquid-level switch, pump,
Flow can be automatically controled.
7. combined orbit wheel as claimed in claim 1 or 2, which is characterized in that the end face of disc type track is provided with radiating ribs.
8. combined orbit wheel as claimed in claim 1 or 2, which is characterized in that the wheel body is closed by alloy steel material or copper
Golden material manufacture, the disc type track is using actual track steel or the alloy steel making of ingredient, similar performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355828.3A CN105136487B (en) | 2015-06-24 | 2015-06-24 | A kind of combined orbit wheel and cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355828.3A CN105136487B (en) | 2015-06-24 | 2015-06-24 | A kind of combined orbit wheel and cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105136487A CN105136487A (en) | 2015-12-09 |
| CN105136487B true CN105136487B (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510355828.3A Active CN105136487B (en) | 2015-06-24 | 2015-06-24 | A kind of combined orbit wheel and cooling device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108982130A (en) * | 2018-07-23 | 2018-12-11 | 中国重型机械研究院股份公司 | A kind of high-speed maglev train brake system test platform |
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| CN105136487A (en) | 2015-12-09 |
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Address after: 100081 Beijing city Haidian District Daliushu Road No. 2 Co-patentee after: BEIJING ZONGHENG ELECTRO-MECHANICAL TECHNOLOGY Co.,Ltd. Patentee after: CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. Co-patentee after: LOCOMOTIVE & CAR RESEARCH INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. Address before: 100081 Beijing city Haidian District Daliushu Road No. 2 Co-patentee before: BEIJING ZONGHENG ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT Co.,Ltd. Patentee before: China Academy of Railway Sciences Co-patentee before: CHINA ACADEMY OF RAILWAY SCIENCES LOCOMOTIVE & CAR Research Institute |
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Effective date of registration: 20191111 Address after: 100081 Beijing city Haidian District Daliushu Road No. 2 Co-patentee after: BEIJING ZONGHENG ELECTRO-MECHANICAL TECHNOLOGY Co.,Ltd. Patentee after: CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. Co-patentee after: LOCOMOTIVE & CAR RESEARCH INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. Co-patentee after: TIEKE ASPECT (TIANJIN) TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 100081 Beijing city Haidian District Daliushu Road No. 2 Co-patentee before: BEIJING ZONGHENG ELECTRO-MECHANICAL TECHNOLOGY Co.,Ltd. Patentee before: CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. Co-patentee before: LOCOMOTIVE & CAR RESEARCH INSTITUTE OF CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. |
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