CN106411101A - Linear permanent magnetic eddy current brake system - Google Patents
Linear permanent magnetic eddy current brake system Download PDFInfo
- Publication number
- CN106411101A CN106411101A CN201610983415.4A CN201610983415A CN106411101A CN 106411101 A CN106411101 A CN 106411101A CN 201610983415 A CN201610983415 A CN 201610983415A CN 106411101 A CN106411101 A CN 106411101A
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- China
- Prior art keywords
- permanent magnet
- eddy current
- linear pattern
- current system
- magnet arrays
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention discloses a linear permanent magnetic eddy current brake system. The system comprises at least two permanent magnet arrays (1) and at least one induction plate (2), wherein either the permanent magnet arrays or the induction plate is arranged on a motion carrier, the other is fixedly arranged, the permanent magnet arrays are linear Halbach permanent magnet arrays, the two permanent magnet arrays are arranged in parallel and are spaced by a gap, the sides of strong magnetic fields of the two permanent magnet arrays are opposite to each other, when the motion carrier moves to a preset position, the induction plate is inserted into the gap along the length direction of the permanent magnet arrays, when the induction plate is inserted into the gap, the induction plate cuts magnetic lines of the permanent magnet arrays to generate eddy currents, an induction magnetic field is generated through the eddy currents, and the induction plate and the permanent magnet arrays are enabled to generate brake forces for braking. According to the invention, the two permanent magnet arrays are arranged in parallel, and the gap between the two permanent magnet arrays has a quite strong magnetic field, such that the brake forces can be effectively increased, the lateral forces are reduced, and such Halbach structures can also effectively reduce peripheral magnetic fields outside the system.
Description
Technical field
The invention belongs to the technical field of brake is and in particular to a kind of linear pattern eddy current system.
Background technology
At present, common brake has mechanical brake and electromagnetic brake, and mechanical brake passes through frictional force
It is braked, impacts larger during braking, using needing more renewal of facing renewal after a period of time.Electromagnetic brake generally adopts electromagnetism
Iron, relies on solenoid to produce operating fields, during work, heating is than more serious.
Above-mentioned discussion content purpose be to reader introduce may be described below and/or the present invention that advocates each
The various aspects of the related technology of individual aspect are it is believed that this discussion content contributes to as reader with background's information, to be conducive to more
Understanding various aspects of the invention well, it is therefore to be understood that being that these discussions are read with this angle, rather than recognizing existing
Technology.
Content of the invention
It is an object of the invention to avoiding of the prior art not enough and providing a kind of linear pattern eddy current system,
Its braking is gentle, and impact is little.
The purpose of the present invention is achieved through the following technical solutions：
There is provided a kind of linear pattern eddy current system, including at least two permanent magnet arrays and at least one piece tablet, institute
State permanent magnet array and tablet one of both is arranged on motion carrier, another one is fixedly installed, described permanent magnet array is
Linear pattern Halbach permanent array, two permanent magnet arrays be arranged in parallel and have gap, this strong magnetic of two permanent magnet arrays
Relatively, when described motion carrier moves to precalculated position, described tablet is along the length direction of permanent magnet array for the side of field
Insert in this gap.
Improve as further, the permanent magnet in described permanent magnet array is arranged in stainless steel tank.
Improve as further, the two ends of described stainless steel tank are separately provided for clamping the stainless steel gear of permanent magnet
Plate.
Improve as further, described permanent magnet array is wrapped with stainless sheet steel protective cover.
Improve as further, between described permanent magnet and permanent magnet, permanent magnet and stainless steel tank, stainless steel shoe it
Between be coated with glue.
Improve as further, described permanent magnet material is N45.
Improve as further, the electroplating surface ambrose alloy of described permanent magnet adds epoxy finishes.
Improve as further, described tablet is divided into high speed retaining segment, middling speed retaining segment, low speed system along its length
Dynamic section, described high speed retaining segment, middling speed retaining segment, the electrical conductivity of low speed retaining segment material therefor differ.
Improve as further, described high speed retaining segment material is stainless steel, described middling speed retaining segment material is that aluminium is white
Copper, described low speed retaining segment material is aluminium alloy.
Improve as further, described permanent magnet array is 12, described tablet is six pieces.
The linear pattern eddy current system that the present invention provides, including at least two permanent magnet arrays and at least one piece sense
Answer plate, described permanent magnet array and tablet one of both are arranged on motion carrier, and another one is fixedly installed, described permanent magnet
Array is linear pattern Halbach permanent array, and two permanent magnet arrays be arranged in parallel and have gap, this two permanent magnet battle arrays
Relatively, when described motion carrier moves to precalculated position, described tablet is along the length of permanent magnet array for the side in big powers magnetic field
Degree direction is inserted in this gap.When described tablet inserts in this gap along the length direction of permanent magnet array, tablet is cut
Cut the magnetic line of force in gap and can produce vortex, and be vortexed and can produce induced field, so that tablet is produced with permanent magnet array
Brake force is to be braked.Halbach permanent array can make side magnetic field strengthen, opposite side field weakening, the present invention's
Two permanent magnet arrays be arranged in parallel, and the side of two permanent magnet array high-intensity magnetic fields is relatively, between two permanent magnet arrays
Gap has extremely strong magnetic field, can effectively increase brake force, reduces side force, and Halbach structure also can effectively reduce system
Exterior circumferential magnetic field.
Brief description
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not constitute any limit to the present invention
System, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to the following drawings
Other accompanying drawings.
Fig. 1 is the structural representation of linear pattern eddy current system.
Fig. 2 is the structural representation that linear pattern eddy current system is applied to the braking of certain kinematic system.
Fig. 3 is the single assembling modular structure signal that linear pattern eddy current system is applied to the braking of certain kinematic system
Figure.
Fig. 4 is that linear pattern eddy current system is applied to the total braking force of certain kinematic system braking with velocity variations song
Line chart.
Fig. 5 is that linear pattern eddy current system is applied to the cross force of certain kinematic system braking with speed change curves
Figure.
Fig. 6 be linear pattern eddy current system be applied to certain kinematic system braking deceleration change over curve
Figure.
Fig. 7 be linear pattern eddy current system be applied to certain kinematic system braking speed change over curve
Figure.
Fig. 8 be linear pattern eddy current system be applied to certain kinematic system braking braking distance change over song
Line chart.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, below in conjunction with the accompanying drawings and specifically real
The present invention is described in further detail to apply example, it should be noted that in the case of not conflicting, embodiments herein and
Feature in embodiment can be mutually combined.
As shown in figure 1, a kind of linear pattern eddy current system of offer of the present invention, including two permanent magnet battle arrays
Row 1 and at least one piece tablet 2, described permanent magnet array 1 and tablet 2 one of both are arranged on motion carrier, another one
It is fixedly installed.In the present embodiment, permanent magnet array 1 is arranged on motion carrier, with motion carrier vertically（Y-axis
Direction）Motion；Tablet vertically broken-up laying fixed installation.Described permanent magnet array 1 is linear pattern Halbach permanent magnetism
Volume array, permanent magnet magnetization direction is as shown in the arrow in permanent magnetism body in Fig. 1, Fig. 3.Halbach array（Halbach array）
It is a kind of new magnet structure form, proposed first by Halbach in 1980.This array is completely by rare earth permanent magnet
Material is constituted, and by arranging the permanent magnet of different magnetizing directions according to certain rule, can converge magnetic force in the side of array
Line, weakens the magnetic line of force in opposite side, thus obtaining a kind of unilateral high-intensity magnetic field of unique properties.Two permanent magnet arrays 1 are parallel to be set
Put and there is gap, the side of this two permanent magnet array high-intensity magnetic fields is relative, that is, between the side direction of permanent magnet array high-intensity magnetic field
Gap.This gap is preferably 16mm, and when described motion carrier moves to precalculated position, described tablet 2 is along permanent magnet array 1
Length direction inserts in this gap, and the distance between permanent magnet array 1 of tablet 2 and both sides is 8mm.Halbach permanent magnetism
Volume array can make side magnetic field strengthen, opposite side field weakening, and two permanent magnet arrays of the present invention be arranged in parallel, and two
Relatively, the gap between two permanent magnet arrays has extremely strong magnetic field, can effectively increase for the side of permanent magnet array high-intensity magnetic field
Big brake force, reduces side force.If two Halbach permanent arrays change another kind of arrangement mode into and are possible to reduce braking
Power, increases side force.
As further preferred embodiment, as shown in figure 3, the multiple permanent magnets 12 in described permanent magnet array 1 are pacified
It is contained in stainless steel tank 11, permanent magnet 12 presses corresponding direction of magnetization arrangement, 9 pieces of permanent magnets are contained in a stainless steel tank 11,
Form a permanent magnet assembly.The two ends of described stainless steel tank 11 are separately provided for clamping the stainless steel shoe of permanent magnet 12
13, described permanent magnet array 1 is wrapped with stainless sheet steel protective cover.Between described permanent magnet 12 and permanent magnet 12, permanent magnetism
It is coated with glue between body 12 and stainless steel tank 11, stainless steel shoe 13.In stainless steel tank, stainless sheet steel protective cover can be protected
Portion's permanent magnet, it is to avoid external force collision is damaged, reduces permanent magnet breakage, permanent magnet stress can be delivered to stainless steel shoe simultaneously
On, reduce permanent magnet stress, eddy-current loss is little additionally, stainless steel material produces, and minimizing is generated heat, and reduces the impact to permanent magnet.
Permanent magnet geometric parameter is：Long 60mm（Y direction）× thick 30mm（X direction）× wide 100mm（Z direction）.Single permanent magnet array
Totally 45 pieces of permanent magnets, permanent magnet array overall length（Y direction）About 1350mm.The present invention is applied to the braking of certain kinematic system, as Fig. 2 institute
Show, described permanent magnet array 1 is 12, described tablet 2 is six pieces, and 540 pieces of permanent magnet gross masses are about 301.725kg.
As further preferred embodiment, described permanent magnet 12 material is N45, remanent magnetism, coercivity, operating temperature, permanent magnet also dependent on be actually needed select other kinds of material.
As further preferred embodiment, the electroplating surface ambrose alloy of described permanent magnet 12 adds epoxy finishes, can play
Surface protection and insulating effect, permanent magnet generation eddy-current loss is little, and heating is also smaller.
As further preferred embodiment, described tablet 2 is divided into high speed retaining segment, middling speed braking along its length
Section, low speed retaining segment, described high speed retaining segment, middling speed retaining segment, the electrical conductivity of low speed retaining segment material therefor differ, this
Sample, can make the brake force of each retaining segment differ, and reduce braking impact.Specifically, tablet is long 70m（Y direction）×
Thick 8mm（X direction）× wide 100mm（Z direction）Metal conductor plate, wherein：High speed retaining segment（56m/s-100m/s）, from not
Rust steel, electrical conductivity is about δ=1.37 × 106s/m, long 10m；Middling speed retaining segment（14m/s-56m/s）, aluminium copper-nickel alloy, electrical conductivity
It is about δ=5.2356 × 106s/m, long 40m；Low speed retaining segment（0m/s-14m/s）, from aluminium alloy, electrical conductivity is δ=1.9157
× 107s/m, long 10m.
The present invention is applied to the braking experiment of certain kinematic system, and braking effect is as follows：
The moving object of gross mass 1000kg, movement velocity 100m/s, using above-mentioned eddy current system, useful effect width
Degree is pressed 100mm and is calculated, and brakes 0.8m/s, deceleration is the largest of about, braking procedure about 1.37s, braking distance is about
65m.Monolateral permanent magnet array is about 10kN, system total braking force the largest of about 120kN by maximum braking force.Permanent magnet array is horizontal
To power the largest of about 6.8kN.Tablet is not subject to cross force, is longitudinally subject to braking reaction force to be about 20kN.Total braking force with
Speed change curves as shown in figure 4, cross force with speed change curves as shown in figure 5, deceleration changes over curve such as Fig. 6
Shown, speed change over curve as shown in fig. 7, braking distance to change over curve as shown in Figure 8.Certain kinetic system above-mentioned
At system eddy current system exterior circumferential 10mm, magnetic induction intensity is less than 280mT, and at 0.5m, magnetic induction intensity is less than
2mT.
A lot of details are elaborated in order to fully understand the present invention in above description, but, the present invention is acceptable
To be implemented different from other modes described here using other, it is thus impossible to be interpreted as limiting the scope of the invention.
In a word, although the present invention lists above-mentioned preferred embodiment, it should be mentioned that although those skilled in the art
Member can carry out various change and remodeling, unless such change and remodeling deviate from the scope of the present invention, otherwise all should wrap
Include within the scope of the present invention.
Claims (10)
1. a kind of linear pattern eddy current system it is characterised in that：Including at least two permanent magnet arrays（1）At least one
Block tablet（2）, described permanent magnet array（1）And tablet（2）One of both is arranged on motion carrier, and another one fixation sets
Put, described permanent magnet array（1）For linear pattern Halbach permanent array, two permanent magnet arrays（1）It is arranged in parallel and have
Gap, the side of this two permanent magnet array high-intensity magnetic fields relatively, when described motion carrier moves to precalculated position, described sense
Answer plate（2）Along permanent magnet array（1）Length direction insert in this gap.
2. linear pattern eddy current system according to claim 1 it is characterised in that：Described permanent magnet array（1）
In permanent magnet（12）It is arranged on stainless steel tank（11）In.
3. linear pattern eddy current system according to claim 2 it is characterised in that：Described stainless steel tank（11）'s
Two ends are separately provided for clamping permanent magnet（12）Stainless steel shoe（13）.
4. linear pattern eddy current system according to claim 3 it is characterised in that：Described permanent magnet array（1）
It is wrapped with stainless sheet steel protective cover.
5. linear pattern eddy current system according to claim 3 it is characterised in that：Described permanent magnet（12）With forever
Magnet（12）Between, permanent magnet（12）With stainless steel tank（11）, stainless steel shoe（13）Between be coated with glue.
6. linear pattern eddy current system according to claim 2 it is characterised in that：Described permanent magnet（12）Material
For N45.
7. linear pattern eddy current system according to claim 6 it is characterised in that：Described permanent magnet（12）Table
Face plating ambrose alloy adds epoxy finishes.
8. linear pattern eddy current system according to claim 1 it is characterised in that：Described tablet（2）Along length
Degree direction is divided into high speed retaining segment, middling speed retaining segment, low speed retaining segment, described high speed retaining segment, middling speed retaining segment, low speed braking
The electrical conductivity of section material therefor differs.
9. linear pattern eddy current system according to claim 8 it is characterised in that：Described high speed retaining segment material
For stainless steel, described middling speed retaining segment material is aluminium copper-nickel alloy, and described low speed retaining segment material is aluminium alloy.
10. linear pattern eddy current system according to any one of claim 1 to 9 it is characterised in that：Described forever
Magnet array（1）For 12, described tablet（2）For six pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983415.4A CN106411101A (en) | 2016-11-09 | 2016-11-09 | Linear permanent magnetic eddy current brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983415.4A CN106411101A (en) | 2016-11-09 | 2016-11-09 | Linear permanent magnetic eddy current brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106411101A true CN106411101A (en) | 2017-02-15 |
Family
ID=58015416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610983415.4A Pending CN106411101A (en) | 2016-11-09 | 2016-11-09 | Linear permanent magnetic eddy current brake system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106411101A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110059433A (en) * | 2019-04-26 | 2019-07-26 | 南京辑星科技有限公司 | A kind of magnetic group layout efficient coupling design method of linear type vortex magnetic brake system |
| CN110110417A (en) * | 2019-04-26 | 2019-08-09 | 南京辑星科技有限公司 | A kind of design method of linear type vortex magnetic brake |
| CN110195755A (en) * | 2019-05-16 | 2019-09-03 | 南京理工大学 | A kind of adaptive damping permanent magnetism eddy current damper |
| CN110577127A (en) * | 2018-06-08 | 2019-12-17 | 迈格钠磁动力股份有限公司 | mine transportation equipment provided with safety retarding device and safety operation method thereof |
| CN110611415A (en) * | 2019-07-22 | 2019-12-24 | 航宇救生装备有限公司 | Linear permanent magnet eddy current speed reduction device |
| CN112039310A (en) * | 2020-08-13 | 2020-12-04 | 同济大学 | Modular eddy current brake device |
| CN113193724A (en) * | 2021-04-30 | 2021-07-30 | 哈尔滨工业大学 | Low-inertia wide-speed-range permanent magnet eddy current brake |
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| US6533083B1 (en) * | 2000-02-15 | 2003-03-18 | Magnetar Technologies, Inc | Eddy current braking apparatus |
| CN102497085A (en) * | 2011-12-23 | 2012-06-13 | 浙江大学 | Permanent-magnet eddy current retarder based on Halbach array |
| CN104753311A (en) * | 2015-04-24 | 2015-07-01 | 哈尔滨工业大学 | Long-stroke permanent magnet linear eddy current brake |
| CN105406681A (en) * | 2014-09-12 | 2016-03-16 | 上海日立电器有限公司 | Linear motor rotor |
| CN105896877A (en) * | 2016-04-21 | 2016-08-24 | 成都茂源科技有限公司 | Linear current vortex brake apparatus and linear carrying apparatus |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6533083B1 (en) * | 2000-02-15 | 2003-03-18 | Magnetar Technologies, Inc | Eddy current braking apparatus |
| CN102497085A (en) * | 2011-12-23 | 2012-06-13 | 浙江大学 | Permanent-magnet eddy current retarder based on Halbach array |
| CN105406681A (en) * | 2014-09-12 | 2016-03-16 | 上海日立电器有限公司 | Linear motor rotor |
| CN104753311A (en) * | 2015-04-24 | 2015-07-01 | 哈尔滨工业大学 | Long-stroke permanent magnet linear eddy current brake |
| CN105896877A (en) * | 2016-04-21 | 2016-08-24 | 成都茂源科技有限公司 | Linear current vortex brake apparatus and linear carrying apparatus |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110577127A (en) * | 2018-06-08 | 2019-12-17 | 迈格钠磁动力股份有限公司 | mine transportation equipment provided with safety retarding device and safety operation method thereof |
| CN110577127B (en) * | 2018-06-08 | 2024-06-07 | 迈格钠磁动力股份有限公司 | Mine transportation equipment with safety retarder and safety operation method thereof |
| CN110059433A (en) * | 2019-04-26 | 2019-07-26 | 南京辑星科技有限公司 | A kind of magnetic group layout efficient coupling design method of linear type vortex magnetic brake system |
| CN110110417A (en) * | 2019-04-26 | 2019-08-09 | 南京辑星科技有限公司 | A kind of design method of linear type vortex magnetic brake |
| CN110059433B (en) * | 2019-04-26 | 2023-05-16 | 南京辑星科技有限公司 | Magnetic group layout efficient coupling design method of linear eddy current magnetic braking system |
| CN110195755A (en) * | 2019-05-16 | 2019-09-03 | 南京理工大学 | A kind of adaptive damping permanent magnetism eddy current damper |
| CN110611415A (en) * | 2019-07-22 | 2019-12-24 | 航宇救生装备有限公司 | Linear permanent magnet eddy current speed reduction device |
| CN112039310A (en) * | 2020-08-13 | 2020-12-04 | 同济大学 | Modular eddy current brake device |
| CN112039310B (en) * | 2020-08-13 | 2021-07-20 | 同济大学 | Modular eddy current brake device |
| CN113193724A (en) * | 2021-04-30 | 2021-07-30 | 哈尔滨工业大学 | Low-inertia wide-speed-range permanent magnet eddy current brake |
| CN113193724B (en) * | 2021-04-30 | 2023-03-03 | 哈尔滨工业大学 | Low-inertia wide-speed-range permanent magnet eddy current brake |
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