CN203377768U - Grid-shaped linear motor secondary device for linear motor rail transit - Google Patents
Grid-shaped linear motor secondary device for linear motor rail transit Download PDFInfo
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- CN203377768U CN203377768U CN201320460655.8U CN201320460655U CN203377768U CN 203377768 U CN203377768 U CN 203377768U CN 201320460655 U CN201320460655 U CN 201320460655U CN 203377768 U CN203377768 U CN 203377768U
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Abstract
The utility model relates to a grid-shaped linear motor secondary device for linear motor rail transit, which comprises a magnetically permeable iron core, a conductor and a mounting bracket, wherein the conductor comprises a group of conductive guide bars arranged in a grid-shaped mode and conductive end bars for connecting the end parts of adjacent conductive guide bars; the magnetically permeable iron core is provided with mounting notches matched with the conductive guide bars, the conductive guide bars are embedded in the mounting notches, two end parts of the conductive guide bars extend to the outside of the mounting notches, and the conductive end bars are arranged at the side portions of the magnetically permeable iron core; and the magnetically permeable iron core is arranged on the mounting bracket. The magnetically permeable iron core is made by punching and laminating silicon steel sheets, and the silicon steel sheets are laminated along the length direction of the conductive guide bars. The conductive guide bars and the conductive end bars are made of materials with good conductivity. The linear motor secondary device provided by the utility model adopts a brand new integral structure and the materials with good conductivity and magnetic permeability, thereby effectively reducing the eddy-current loss in a secondary induction plate, and being capable of improving the traction force of a motor and acquiring an excellent energy saving effect.
Description
Technical field
The utility model relates to grid shape linear electric motors second unit for a kind of Linear Motor Rail Transit System, and this kind of grid shape linear electric motors second unit is applicable to Linear Motor Rail Transit System, is specially adapted to the subway Linear Motor Rail Transit System.
Background technology
The Linear Induction Motor Rail Transit train has the advantages such as safe, quick, comfortable, economic and energy-conservation, is an important component part of following city wheel track traffic, is the inexorable trend of Metroplises wheel track transport development.The Linear Induction Motor Rail Transit traffic is from whole system operation, due to without gear reduction, also do not have the problem such as skid, and actual operating efficiency is not low.Actual operation data measured is: Linear Metro is than the traditional subway saving energy 12% that adopts resistance braking.But saving steel more than 15% also simultaneously.
But, due to Linear Induction Motor Rail Transit traffic cathetus electric motor primary and secondary between the very large and distinctive limit end effect problem of air gap, the electric rotating that its efficiency and power factor are more traditional is confidential poor, has restricted to a certain extent the development of Linear Induction Motor Rail Transit train.Increasingly mature along with the linear electric motors drive technology, how further reducing the linear electric motors energy consumption has become in the Linear Induction Motor Rail Transit traffic and has needed a major issue of paying attention to.
Above-mentioned said linear electric motors energy consumption, the one, because the air gap between the primary and secondary of linear electric motors is larger than the air gap of electric rotating machine, therefore required exciting current is large, and loss increases; The 2nd, because cut-off at linear electric motor primary iron core two ends, produced the limit end effect, cause wave distortion etc., affected the runnability of linear electric motors, cause loss to increase.
Therefore, the energy consumption that how to reduce linear electric motors becomes a hot research problem gradually.From linear electric motors itself, Energy Consumption Factors is mainly at its structure and material of primary and secondary.From the prior art, it is comparatively perfect that the structure and material of linear electric motor primary has designed, therefore, and the design of the structure and material that linear electric motors are secondary and the emphasis of selecting just to have become research both at home and abroad at present and test.
At present, the linear electric motors that most of Linear Induction Motor Rail Transit traffic is used are secondary is the magnetic conduction iron plate that adopts 20-25mm, then adopts the compound 5-7mm conduction of the combined process aluminium sheet of explosive welding (EW) to form composite secondary, is called as the integral type tablet.Be illustrated in figure 1 the secondary schematic diagram of integral type tablet, the integral type tablet is secondary comprises conduction aluminium sheet 1(monolith shape), magnetic conduction steel plate 2(monolith shape), conduction aluminium sheet 1 is compounded in the surface of magnetic conduction steel plate 2.The linear electric motors of this kind of secondary structure eddy current loss when operation is large, and efficiency is low.
In recent years, also develop another kind of linear electric motors secondary structure, as shown in Figure 2, this kind of structure is known as laminated induction board.The secondary conduction aluminium sheet 3(monolith shape that comprises of this kind of laminated induction board), the stacked shape of magnetic conduction steel plate 4(), magnetic conduction steel plate 4 is to press folded formation with some blocks of square steel, the aluminium sheet 3 that conducts electricity is constant, as Fig. 1, is compounded on magnetic conduction steel plate 4 surfaces.The linear electric motors of this kind of secondary structure are little than integral type tablet secondary structure of when operation eddy current loss, and efficiency is improved.
Secondary laminated induction board structure and the performance comparison test result of integral type tablet structure according to above-mentioned linear electric motors, in the situation that same current and identical primary and secondary air gap, the thrust of laminated induction board is larger than the thrust of integral type tablet, and the number of laminations of laminated induction board increases, thrust can increase, and laminated induction board improves the efficiency of linear electric motors.For laminated induction board and the integral type tablet of same size, adopt the linear motor pushing force of laminated induction board will increase in theory 10% left and right than the linear motor pushing force that adopts the integral type tablet, energy consumption is saved 10% left and right.This is because linear electric motor primary is while interacting with secondary tablet, can the generation eddy current on the magnetic conduction steel plate of tablet.The magnetic conduction steel plate of integral type tablet is the monoblock back iron, and eddy current loss is large, and the magnetic conduction steel plate of laminated induction board is comprised of some blocks of square steel laminations, compares eddy current loss little.
Although laminated induction board is secondary than the secondary efficiency that improves linear electric motors of integral type tablet, from linear electric motors, secondary structure and material, it changes still not enough.The secondary eddy current loss that only from part-structure, has changed the secondary magnetic conductive board of integral type tablet of laminated induction board, and its permeability magnetic material still adopts common iron; And the structure and material of its secondary conductive plate does not still become, reduce secondary energy consumption and also have larger room for promotion.The utility model be exactly will be secondary at linear electric motors overall structure and material on have breakthrough, to obtain better energy-saving effect.
The utility model content
The purpose of this utility model is to provide grid shape linear electric motors second unit for a kind of more efficient Linear Motor Rail Transit System, improves thrust and the operational efficiency of existing Linear Motor Rail Transit System.
The utility model is to realize like this, grid shape linear electric motors second unit for a kind of Linear Motor Rail Transit System is provided, comprise conducting magnet core, electric conductor and mounting bracket, electric conductor comprises the conduction sliver that one group of grid shape is arranged and the conducting end bar that connects adjacent conductive sliver end; Be provided with on conducting magnet core and conduct electricity the installation notch that sliver adapts, the conduction sliver is embedded in to be installed in notch, and the installation notch is all extended at the both ends of conduction sliver, and the conducting end bar is arranged on the sidepiece of conducting magnet core; Conducting magnet core is arranged on mounting bracket.
Further, conducting magnet core is tabular.
Further, conducting magnet core is overrided to form by punching silicon-steel, and silicon steel sheet laminates along the length direction of conduction sliver.
Further, mounting bracket is by the fixing conducting magnet core of securing member.
Further, on the top of mounting bracket, be provided with some positive stop strips, positive stop strip is arranged between adjacent conduction sliver.
Further, convex with the mounting panel of laying installation use at the lateral surface of mounting bracket, be provided with installing hole on mounting panel.
Further, conduction sliver and conducting end bar one connect.
Further, conduction sliver and the conducting end bar material good by electric conductivity are made.
Further, the material of conduction sliver and conducting end bar is the fine copper material.
Further, the sectional area of conducting end bar is greater than the sectional area of conduction sliver.
Compared with prior art, the grid shape linear electric motors second unit that the utility model provides, at first, fully different with laminated induction board second unit and integral type tablet second unit overall structure, structural design of the present utility model more meets the operation logic of linear electric motors, more can embody advantage and the characteristics of linear electric motors.The tablet second unit of existing linear electric motors adopts block of metal plate or clad metal sheet mostly, there do not is obvious conduction sliver, therefore, with the utility model, compare, induced current on tablet is more random without the distribution of electric current in obvious guiding and conduction aluminium sheet, its eddy current loss is large, and efficiency is low.Secondly, also fully different with existing laminated induction board second unit and integral type tablet second unit from material, existing tablet adopts conduction aluminium sheet and magnetic conduction steel plate to make, and grid shape tablet material of the present utility model is fine copper material and the good silicon steel sheet of magnetic property that electric conductivity is good, conduction and magnetic property strengthen, energy loss is few, and efficiency is higher.And, under constant prerequisite, can increase the thickness of primary magnetic conduction iron core at secondary conducting magnet core thickness, improve the tractive effort of linear electric motors.
The accompanying drawing explanation
Fig. 1 is integral type tablet second unit structural representation;
Fig. 2 is laminated induction board second unit structural representation;
The structural representation that Fig. 3 is a preferred embodiment of the present utility model;
Fig. 4 is the induced current distribution schematic diagram in electric conductor in Fig. 3;
The induced current loop schematic diagram that Fig. 5 is Fig. 4.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Please refer to shown in Fig. 3, is a preferred embodiment of the present utility model, and the Linear Motor Rail Transit System of the present embodiment comprises conducting magnet core 5, electric conductor 6 and mounting bracket 7 with grid shape linear electric motors second unit.Conducting magnet core 5 is tabular, and electric conductor 6 is arranged in conducting magnet core 5, and conducting magnet core 5 is arranged on mounting bracket 7.
Be concaved with on conducting magnet core 5 end faces and conduct electricity a plurality of installation notches 51 that sliver 61 adapts, conduction sliver 61 is embedded in to be installed in notch 51, and the both ends of conduction sliver 61 are all extended notch 51 is installed, and conducting end bar 62 is arranged on the sidepiece of conducting magnet core 5.The punching silicon-steel that conducting magnet core 5 is good by magnetic property is overrided to form, and silicon steel sheet laminates along the length direction of conduction sliver 61, is preferably the silicon steel sheet of 0.5mm thickness.Conducting magnet core 5 adopts the good silicon steel sheet of magnetic property, can further reduce secondary energy consumption, improves second-order efficiency.Shape and the quantity of notch 51 are installed to be determined with respect to elementary designing requirement by linear electric motors.Notch 51 is installed for fixing conduction sliver 61, and can be communicated with each other with the primary and secondary magnetic circuit of linear electric motors.
During actual the use, the elementary of linear electric motors is arranged on the track train bogie, and Linear Motor Rail Transit System of the present utility model is laid on the track plates or sleeper basis of roadbed along track and linear electric motor primary accordingly with grid shape linear electric motors second unit.
Pass into the three-phase symmetrical sinusoidal current in three elementary phase windings of line inductance electromotor after, in the air gap after elementary and secondary interaction between them, can produce air-gap field.When not considering to cut-off due to conducting magnet core 5 two ends the longitudinal edge effect caused, this air-gap field distribution situation can regard as and be sinusoid along the rectilinear direction of launching and distribute.When the three-phase current temporal evolution, air-gap field will be by A, B, C phase sequence along traveling priority.This magnetic field is translation, therefore is called travelling-magnetic-field.When secondary be grid shape when secondary, secondary sliver is expert under the ripple magnetic field intercepts, by induced electromotive force and produce induced current.And electric current and the air gap magnetic field interaction of conduction sliver 61 just produce electromagnetic push.Under the effect of this electromagnetic push, if secondary, be fixed, the so elementary just direction moving linearly along the travelling-magnetic-field motion with train.
Please, together with reference to Fig. 4 and Fig. 5, drawn respectively the distribution of the interior imaginary induced field of electric conductor 6 and induced current and electric conductor 6 induced currents.In figure
l δ for the lamination thickness of primary magnetic conduction iron core,
cfor secondary
l δ length direction stretches out the width of elementary iron core, and it is used as the end path of secondary induction electric current,
clarge young pathbreaker affect secondary resistance.In the utility model, the end path of secondary induction electric current is specially provided with conducting end bar 62.Because the sectional area of conducting end bar 62 is greater than the sectional area of conduction sliver 61, reduce the consumption of secondary induction electric current in conducting end bar 62.Conducting end bar 62 adopts the good pure copper material of electric conductivity, so, further reduced secondary resistance, raise the efficiency.Electric conductor 6 can reduce the loss of inductive loop, simultaneously, makes secondary magnetic circuit more reasonable, increases the magnetic flux of conducting magnet core 5, improves second-order efficiency.
On the other hand, owing to being provided with special conducting end bar 62 for the end path, make
l δ length can relatively increase, even reach fully overlapping stage of primary magnetic conduction iron core (not shown) thickness and secondary conducting magnet core 5 thickness, more effectively utilize the thickness of secondary conducting magnet core 5.Under constant prerequisite, can increase the thickness of primary magnetic conduction iron core at secondary conducting magnet core 5 thickness, improve the tractive effort of linear electric motors.
The Linear Motor Rail Transit System of the present embodiment adopts the linear motor pushing force of grid shape electric conductor tablet will increase in theory 10% left and right than the linear motor pushing force that adopts laminated induction board with grid shape linear electric motors second unit, and energy consumption is saved 10% left and right.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. grid shape linear electric motors second unit for a Linear Motor Rail Transit System, comprise conducting magnet core, electric conductor and mounting bracket, it is characterized in that, described electric conductor comprises the conduction sliver that one group of grid shape is arranged and the conducting end bar that connects adjacent conductive sliver end; Be provided with on described conducting magnet core and conduct electricity the installation notch that sliver adapts, described conduction sliver is embedded in described installation notch, and the installation notch is all extended at the both ends of conduction sliver, and described conducting end bar is arranged on the sidepiece of conducting magnet core; Described conducting magnet core is arranged on mounting bracket.
2. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 1, is characterized in that, described conducting magnet core is tabular.
3. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 2, is characterized in that, described conducting magnet core is overrided to form by punching silicon-steel, and described silicon steel sheet laminates along the length direction of described conduction sliver.
4. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 3, is characterized in that, described mounting bracket is fixed described conducting magnet core by securing member.
5. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 4, is characterized in that, be provided with some positive stop strips on the top of described mounting bracket, described positive stop strip is arranged between adjacent described conduction sliver.
6. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 1, is characterized in that, convexes with the mounting panel of laying installation use at the lateral surface of described mounting bracket, on described mounting panel, is provided with installing hole.
7. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 1, is characterized in that, described conduction sliver and conducting end bar one connect.
8. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 7, is characterized in that, described conduction sliver and the conducting end bar material good by electric conductivity are made.
9. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 8, is characterized in that, the material of described conduction sliver and conducting end bar is the fine copper material.
10. grid shape linear electric motors second unit for Linear Motor Rail Transit System as claimed in claim 1, is characterized in that, the sectional area of described conducting end bar is greater than the sectional area of described conduction sliver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460655.8U CN203377768U (en) | 2013-07-30 | 2013-07-30 | Grid-shaped linear motor secondary device for linear motor rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460655.8U CN203377768U (en) | 2013-07-30 | 2013-07-30 | Grid-shaped linear motor secondary device for linear motor rail transit |
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| CN203377768U true CN203377768U (en) | 2014-01-01 |
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| CN201320460655.8U Expired - Fee Related CN203377768U (en) | 2013-07-30 | 2013-07-30 | Grid-shaped linear motor secondary device for linear motor rail transit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015013884A1 (en) * | 2013-07-30 | 2015-02-05 | 山东红帆能源科技有限公司 | Grid-shaped linear motor secondary device for linear motor rail transit |
| CN104348328A (en) * | 2013-07-30 | 2015-02-11 | 山东红帆能源科技有限公司 | Grid linear motor secondary device for linear motor rail transportation |
| CN108462360A (en) * | 2018-04-13 | 2018-08-28 | 上海交通大学 | Linear induction synchronous motor |
| CN108736687A (en) * | 2018-05-31 | 2018-11-02 | 浙江大学 | A kind of line inductance electromotor based on V-groove secondary structure |
-
2013
- 2013-07-30 CN CN201320460655.8U patent/CN203377768U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015013884A1 (en) * | 2013-07-30 | 2015-02-05 | 山东红帆能源科技有限公司 | Grid-shaped linear motor secondary device for linear motor rail transit |
| CN104348328A (en) * | 2013-07-30 | 2015-02-11 | 山东红帆能源科技有限公司 | Grid linear motor secondary device for linear motor rail transportation |
| CN108462360A (en) * | 2018-04-13 | 2018-08-28 | 上海交通大学 | Linear induction synchronous motor |
| CN108736687A (en) * | 2018-05-31 | 2018-11-02 | 浙江大学 | A kind of line inductance electromotor based on V-groove secondary structure |
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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: 20140101 Termination date: 20190730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |