CN102678788B - Combined type disc-shaped eddy-current brake applied to high-speed train - Google Patents

Combined type disc-shaped eddy-current brake applied to high-speed train Download PDF

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Publication number
CN102678788B
CN102678788B CN201210165713.4A CN201210165713A CN102678788B CN 102678788 B CN102678788 B CN 102678788B CN 201210165713 A CN201210165713 A CN 201210165713A CN 102678788 B CN102678788 B CN 102678788B
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China
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semicircle
combined type
stator
combined
rotor
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Expired - Fee Related
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CN201210165713.4A
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Chinese (zh)
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CN102678788A (en
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郭远晶
魏燕定
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention discloses a combined type disc-shaped eddy-current brake applied to a high-speed train. The combined type disc-shaped eddy-current brake comprises an axle, a combined type stator, a sliding bearing and two combined type rotor discs, wherein the combined type stator is formed by connecting two semi-circular stators through bolts; the sliding bearing is formed by two bearing bushes with flanged peripheries; each combined type rotor disc is formed by connecting two semi-circular rotors through bolts; the combined type stator is mounted on the axle through the sliding bearing; the two combined type rotor discs are symmetrically mounted on the axle in a pressed manner relative to the combined type stator; and working clearances exist between working disc surfaces of the combined type rotor discs and the relative side surfaces of the combined type stator. The combined type disc-shaped eddy-current brake has the advantages of simple structure, high braking efficiency and good heat dissipation performance, is convenient to mount and can be flexibly combined with a disc-shaped friction brake, thereby improving the braking performance of the high-speed train.

Description

A kind of combined type disk eddy current break that is applied to bullet train
Technical field
The present invention relates to a kind of train complemental brake system, relate in particular to a kind of combined type disk eddy current break that is applied to bullet train.
Background technique
High-speed train braking system is most important for operational reliability and the Security of train, along with the fast development of high-speed railway, also more and more higher to the requirement of braking system performance.Under fortuitous event, bullet train emergency stopping distance is shorter, and train operation is just safer, in addition, in order to improve ride quality, the control accuracy of braking force is also had to higher requirement.At present, high-speed train braking form generally adopts multiple mode of braking combination, when high speed operation, adopt electrical braking form, while dropping to low speed, adopt mechanical braking, thereby reduce the wearing and tearing of brake disc, wheel and rail, reduce noise, frictional heat stress, alleviate maintenance load, improve comfort level by bus.
Eddy-current brake is as the electrical braking mode of a kind of non-adhesion of bullet train, have starting power little, possess failure safe measure, anti-wheel lock up, without wearing and tearing, need not carry out running repairs, reaction fast and with the train regeneration brake system advantage such as compatible mutually.The magnetic force principle of eddy-current brake is very simple, the conductor cutting magnetic field magnetic line of force of motion and in the inner foucault current that produces of conductor, according to the Lenz's law in physics, foucault current suffered Ampere force in magnetic field is contrary with conductor moving direction, thereby hinders conductor motion.Bullet train eddy current brake systems utilizes the magnetic force between magnetic field and eddy current to brake train, and the speed of a motor vehicle is faster, and braking moment is larger, and train momentum reduces rapidly by electromagnetic induction and resistance heating.
Bullet train eddy-current brake mode comprises linear eddy-current brake and disk eddy current braking.Linear eddy-current brake claims again vortex rail braking, it is suspended on bogie, electromagnet on it is linearly arranged according to NS utmost point over-over mode along rail, during braking, electromagnet drops to from several millimeters of places, rail top, utilize with the relative movement of rail and make to produce influence electricity eddy current in rail, thereby produce braking force, make train deceleration.Linear eddy-current brake (LECB) in 2002 in the German third generation bullet train ICE3 application of succeeding.The shortcoming of linear eddy-current brake is that required braking force is larger, can produce rail localized hyperthermia phenomenon, and track circuit is had to certain interference effect during braking.The electric eddy current retarder generally using on disk eddy current brake structural form and at present automobile is basic identical, all stator, rotor and fixing frame, consists of.During braking, stator coil energising produces magnetic field, the rotor cutting magnetic line of rotation and within it portion produce inducing eddy-current, and then produce braking moment and make train deceleration.Disk eddy current break is mainly used in Japanese the Shinkansen EMU 100 and is, 300 is, 400 is on the trailer that is with 700, its structural type is electromagnetic coil to be arranged on to the both sides of brake disc, and for convenience of installing, the arrangement of electromagnetic coil is not a complete disc, and be one section of arc, major defect is that quality and the power consumption of complex structure, device is all larger.
Disk eddy current break on bullet train optimal mounting point should for bogie wheel between axletree on, can make like this simplifying the structure of break, quality lightweight.But, disk eddy current break is arranged on to not a duck soup herein, first, wheel is that hot pressing is assemblied on axletree, break is installed and just must pull down wheel, this is very difficult to such an extent as to there is no feasibility; Secondly, if first disc-brake was assemblied on axletree before the press mounting of car wheel is on axletree, that brings very large inconvenience by giving working clearance adjustment, the maintenance and repair of break and changeing again.
Summary of the invention
For current disk eddy current brake application, on high-speed train braking, there are some problems, the object of the present invention is to provide a kind of combined type disk eddy current break that is applied to bullet train.
The technical solution used in the present invention is: a kind of combined type disk eddy current break that is applied to bullet train, and it is arranged on the axletree of high-speed train bogie, comprising: combined-stator, sliding bearing, two composite fabricated rotor dishes that structure is identical; Combined-stator is bolted and is formed by two identical semicircle stators of structure, then by sliding bearing, is arranged on axletree, and sliding bearing is comprised of the bearing shell of two equal flange of surrounding; Two identical relative combined-stators of composite fabricated rotor dish of structure are arranged symmetrically on axletree, have the gap of 1 ~ 2mm between the work card of each composite fabricated rotor dish and relative separately stator side.
Further, described semicircle combined-stator is by forming towards the mode mutually replacing, the even number electromagnet that is evenly arranged along semi-circumference according to the NS utmost point on semicircle framework; Each electromagnet is comprised of an iron core, two coils, two concentrating flux plates, iron core is arranged on semicircle framework by its middle part, the NS utmost point towards two identical coils be arranged on respectively iron core left and right half section upper, two concentrating flux plates are arranged on the left and right end face of iron core by screw respectively.
Further, described composite fabricated rotor dish is bolted and is formed by two semicircle rotors, and the interior semicircle orifice radius of each semicircle rotor disk is identical with axletree radius; When the interior semicircle orifice of two semicircle rotors connect to form one complete when circular, between its junction surface, there is the gap of 2 ~ 5mm, by bolt, connect and overcome this gap composite fabricated rotor dish is press fit on axletree.
The beneficial effect that the present invention has is:
1) this disk eddy current break adopts fabricated structure, by bolt be fitted in high-speed train bogie wheel between axletree on, easy for installation, working clearance adjustment, maintenance and repair and change simple.
2) this disk eddy current break adopts brake disc to be arranged on the structural type of electromagnetic coil both sides, and eddy-current brake work all can be carried out in magnetic field, electromagnetic coil both sides, and than the existing disk eddy current break of bullet train, it is high that this break retardation efficiency is wanted.In addition, the electromagnetic coil of this break is arranged in a complete disc, has increased the number of working coil, and these all make, and this disk eddy current brake structural is simplified, quality lightweight.
3) non-working side of this disk eddy current brake is processed with radiating fin, these radiating fin are uniformly distributed in the form of a ring, and at break, with in the advancing fast of bullet train, brake disc is simultaneously with axletree fast rotational, strengthen air agitation, improve break thermal diffusivity.
4) this disk eddy current break can be used in conjunction with dish type friction brake, adopts eddy-current brake during high speed, adopts friction catch during low speed; In addition, disk eddy current break and dish type friction brake are installed on each bearing of bogie frame crossbeam, and according to circumstances the quantity of these two kinds of breaks of flexible configuration, can improve retardation efficiency, improve braking ability.
Accompanying drawing explanation
Fig. 1 is general illustration of the present invention;
Fig. 2 is decomposition view of the present invention;
Fig. 3 is semicircle stator front view of the present invention;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is a concrete embodiment schematic diagram of the present invention;
In figure: axletree 1, the first composite fabricated rotor dish 2, combined-stator 3, the second composite fabricated rotor dish 4, the first semicircle rotor 5, the second semicircle rotor 6, the first bolt 7, the 3rd semicircle rotor 8, the 4th semicircle rotor 9, the second bolt 10, the first semicircle stator 11, the second semicircle stator 12, the 3rd bolt 13, the 4th bolt 14, the first bearing shell 15, the second bearing shell 16, the first concentrating flux plate 17, the first coil 18, semicircle framework 19, iron core 20, the second coil 21, the second concentrating flux plate 22, the first combined type disk eddy current break 23, the first bearing 24, the second bearing 25, the second combined type disk eddy current break 26, the 3rd bearing 27, the 4th bearing 28, the 3rd combined type disk eddy current break 29, the 5th bearing 30, the 6th bearing 31.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As Figure 1-4, the combined type disk eddy current break that the present invention is applied to bullet train is arranged on the axletree of high-speed train bogie, and it comprises: combined-stator 3, sliding bearing, the first composite fabricated rotor dish 2 and the second composite fabricated rotor dish 4 that structure is identical; Combined-stator 3 is connected to form by four the 3rd bolts 13, four the 4th bolts 14 by the first identical semicircle stator 11 of structure and the second semicircle stator 12, then by sliding bearing, is arranged on axletree 1; Sliding bearing is comprised of the first bearing shell 15 and second bearing shell 16 of the equal flange of surrounding, and the first bearing shell 15 is embedded in the interior semicircle orifice of the first semicircle stator 11, and the second semicircle bearing shell 16 is embedded in the interior semicircle orifice of the second semicircle stator 12; The first composite fabricated rotor dish 2 is arranged symmetrically on axletree 1 with the relative combined-stator 3 of the second composite fabricated rotor dish 4, has the gap of 1 ~ 3mm between the side of the work card of each composite fabricated rotor dish and relative separately combined-stator 3.
Described semicircle stator is by forming towards the mode mutually replacing, the even number electromagnet that is evenly arranged along semi-circumference according to the NS utmost point on semicircle framework 19; Each electromagnet is comprised of iron core 20, the first coil 18, the second coil 21, the first concentrating flux plate 17 and the second concentrating flux plate 22, iron core 20 is arranged on semicircle framework 19 by its middle part, the first coil 18 and the second coil 21 be arranged on respectively iron core 20 left and right half section upper, the first concentrating flux plate 17 and the second concentrating flux plate 22 are arranged on the left and right end face of iron core 20 by screw respectively.
The first described composite fabricated rotor dish 2 is connected to form by four the first bolts 7 by the first semicircle rotor 5 and the second semicircle rotor 6, and the second composite fabricated rotor dish 4 is connected to form by four the second bolts 10 by the 3rd semicircle rotor 8 and the 4th semicircle rotor 9; The interior semicircle orifice radius of each semicircle rotor disk is identical with the radius of axletree 1; When the interior semicircle orifice of two semicircle rotors connect to form one complete when circular, between its junction surface, there is the gap of 1 ~ 2mm, by bolt, connect and overcome this gap composite fabricated rotor dish is press fit on axletree 1.
Working procedure of the present invention is as follows: in bullet train eddy-current brake process, the first composite fabricated rotor dish 2 and the second composite fabricated rotor dish 4 are with axletree 1 rotation, cut the magnetic line of force in combined-stator 3 magnetic fields, both sides simultaneously, in the area that the inner numerous closed traverse of work card that two composite fabricated rotor dishes are relative with combined-stator 3 sides surrounds, magnetic flux changes, thereby in work card, produce Vorticose induction current, i.e. foucault current.Known according to the Lenz's law in physics, combined-stator magnetic field produces to the first charged composite fabricated rotor dish 2 and the second composite fabricated rotor dish 4 Ampere force that stops its rotation, Ampere force makes a concerted effort circumferentially to form the resisting moment contrary with rotor disk sense of rotation, i.e. braking moment along composite fabricated rotor dish.The speed of a motor vehicle is faster, and braking moment is larger, and the kinetic energy of train reduces rapidly by electromagnetic induction and resistance heating, thereby realize bullet train, slows down.
As shown in Figure 5, this kind of form configuring on high-speed train bogie for combined type disk eddy current break.First, second and third combined type disk eddy current break 23,26,29 is crossed bolts and is arranged on bullet train set trailer bogie frame crossbeam on first and third, five bearings 24,27,30, and second, four, six bearings 25,28,31 are for installing dish type friction brake.In high-speed train braking process, during high speed, adopt eddy-current brake, during low speed, adopt friction catch, significantly improved retardation efficiency, improved braking ability.

Claims (3)

1. a combined type disk eddy current break that is applied to bullet train, it is arranged on the axletree (1) of high-speed train bogie, it is characterized in that, combined type disk eddy current break comprises: the first composite fabricated rotor dish (2) and the second composite fabricated rotor dish (4) that combined-stator (3), sliding bearing, structure are identical; Combined-stator (3) is connected to form by four the first bolts (13), four the second bolts (14) with the second semicircle stator (12) by the first identical semicircle stator (11) of structure, then by sliding bearing, is arranged on axletree (1); Sliding bearing is comprised of with the second bearing shell (16) first bearing shell (15) of the equal flange of surrounding, the first bearing shell (15) is embedded in the interior semicircle orifice of the first semicircle stator (11), and the second bearing shell (16) is embedded in the interior semicircle orifice of the second semicircle stator (12); It is upper that the first composite fabricated rotor dish (2) and the second relative combined-stator of composite fabricated rotor dish (4) (3) are arranged symmetrically in axletree (1), has the gap of 0.5 ~ 2mm between the side of the work card of each composite fabricated rotor dish and relative separately combined-stator (3).
2. a kind of combined type disk eddy current break that is applied to bullet train as claimed in claim 1, it is characterized in that, described semicircle stator is by forming towards the mode mutually replacing, the even number electromagnet that is evenly arranged along semi-circumference according to the NS utmost point semicircle framework (19) is upper; Each electromagnet is comprised of with the second concentrating flux plate (22) with the second coil (21), the first concentrating flux plate (17) iron core (20), the first coil (18), iron core (20) is arranged on semicircle framework (19) by its middle part, the NS utmost point towards identical the first coil (18) and the second coil (21) be arranged on respectively iron core (20) left and right half section upper, the first concentrating flux plate (17) is arranged on respectively on the left and right end face of iron core (20) with the second concentrating flux plate (22).
3. a kind of combined type disk eddy current break that is applied to bullet train as claimed in claim 1, it is characterized in that, the first described composite fabricated rotor dish (2) is connected to form by four the 3rd bolts (7) by the first semicircle rotor (5) and the second semicircle rotor (6), and the second composite fabricated rotor dish (4) is connected to form by four the 4th bolts (10) by the 3rd semicircle rotor (8) and the 4th semicircle rotor (9); The interior semicircle orifice radius of each semicircle rotor disk is identical with the radius of axletree (1); When the interior semicircle orifice of two semicircle rotors connect to form one complete when circular, between its junction surface, there is the gap of 2 ~ 5mm, by bolt, connect and overcome this gap composite fabricated rotor dish is press fit on axletree (1).
CN201210165713.4A 2012-05-25 2012-05-25 Combined type disc-shaped eddy-current brake applied to high-speed train Expired - Fee Related CN102678788B (en)

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Application Number Priority Date Filing Date Title
CN201210165713.4A CN102678788B (en) 2012-05-25 2012-05-25 Combined type disc-shaped eddy-current brake applied to high-speed train

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CN102678788B true CN102678788B (en) 2014-08-20

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109649179B (en) * 2019-02-20 2021-11-02 扬州大学 Combined electromagnetic eddy current brake device
CN111237361B (en) * 2020-03-10 2021-10-26 南京工程学院 Rotary type friction and double-layer built-in permanent magnet integrated type braking device for vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB599143A (en) * 1944-03-02 1948-03-05 Martin Phillip Winther Improvements in eddy-current dynamometers, brakes or the like
GB778709A (en) * 1953-10-16 1957-07-10 Cie Telma Improvements in eddy current braking devices
GB900626A (en) * 1957-12-10 1962-07-11 Cohen Elie Improvements in eddy-current couplings and brakes
CN102003479A (en) * 2010-11-05 2011-04-06 江西华伍制动器股份有限公司 Coaxial electric-hydraulic disc brake
CN202007846U (en) * 2010-07-20 2011-10-12 王培文 Disc type electric eddy current brake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB599143A (en) * 1944-03-02 1948-03-05 Martin Phillip Winther Improvements in eddy-current dynamometers, brakes or the like
GB778709A (en) * 1953-10-16 1957-07-10 Cie Telma Improvements in eddy current braking devices
GB900626A (en) * 1957-12-10 1962-07-11 Cohen Elie Improvements in eddy-current couplings and brakes
CN202007846U (en) * 2010-07-20 2011-10-12 王培文 Disc type electric eddy current brake
CN102003479A (en) * 2010-11-05 2011-04-06 江西华伍制动器股份有限公司 Coaxial electric-hydraulic disc brake

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