CN104494635A - Single magnetic type permanent magnet track braking device - Google Patents
Single magnetic type permanent magnet track braking device Download PDFInfo
- Publication number
- CN104494635A CN104494635A CN201410677850.5A CN201410677850A CN104494635A CN 104494635 A CN104494635 A CN 104494635A CN 201410677850 A CN201410677850 A CN 201410677850A CN 104494635 A CN104494635 A CN 104494635A
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- Prior art keywords
- permanent magnet
- magnet
- side plate
- magnetic
- track
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H7/00—Brakes with braking members co-operating with the track
- B61H7/02—Scotch blocks, skids, or like track-engaging shoes
- B61H7/04—Scotch blocks, skids, or like track-engaging shoes attached to railway vehicles
- B61H7/06—Skids
- B61H7/08—Skids electromagnetically operated
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention relates to the technical field of rail transit trains and discloses a single magnetic type permanent magnet track braking device, which comprises a bogie. The single magnetic type permanent magnet track braking device is characterized in that a braking magnet is connected to the bottom of the bogie through a force transmission mechanism; a distance exists between the braking magnet and a rail of the track; the braking magnet comprises side plates on both sides; the length direction of the side plates is the same as the direction of the track; a cover plate is arranged on the top of the side plates; a through hole is formed among the side plates and the cover plate; the side plates are made of a magnetic material; the cover plate is made of a nonmagnetic material; an elongated permanent magnet is arranged in the through hole; magnetic poles of the permanent magnet are the upper and lower surfaces thereof; pole shoes are arranged under the side plates; a nonmagnetic gap is formed between the pole shoes; a driving device is arranged at one ends of the side plates and is used for driving the permanent magnet to rotate. According to the invention, simple and reliable control over the magnetic strength of the magnet and the rail is realized by changing the direction of the magnetic field of the permanent magnet.
Description
Technical field
The present invention relates to rail transit train technical field, particularly relate to a kind of single magnet type permanent magnet track brakes device.
Background technology
Track train in traffic design and operation management, the always extremely important and problem of complexity of train braking problem.Train, running in kind, in order to ensure safety, must guarantee that train can in the stopping distance scope inside brake of regulation.
Track train brake mode generally has electropneumatic brake, electro-hydraulic brake and vacuum brake etc.Above-mentioned brake mode all will realize the allotment of propulsion source through control unit by electromagnetic valve or vacuum pump energy, then braking function is realized by foundation brake actuating unit, its braking procedure is subject to the delay of electric conversion, the conversion of electric liquid, air effect and physical construction, braking response is slow, and brake accuracy is affected.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of single magnet type permanent magnet track brakes device, realizing the quick effective brake to train.
The technical scheme that the present invention takes is:
A kind of single magnet type permanent magnet track brakes device, comprise bogie truck, it is characterized in that, a brake magnet is connected by force transmission mechanism below described bogie truck, a distance is had between described brake magnet and the rail of track, described brake magnet comprises both sides side plate, the length direction of described side plate is identical with track alignment, cover plate is provided with above described side plate, described side plate, through hole is formed between cover plate, described side plate is permeability magnetic material, described cover plate is non-magnet material, strip shape permanent magnet is set in described through hole, the magnetic pole of described permanent magnet is located thereon lower surface, the below of described side plate arranges pole shoe, non-magnetic space is formed in the middle of described pole shoe, in one end of described side plate, actuating device is set, described actuating device drives described permanent magnet to rotate.
Further, described permanent magnet is arranged in a low-carbon (LC) steel column, forms magnetic axis, and described steel column is arranged in the through hole in the middle of described side plate, and described steel column and described through-hole wall leave air gap.
Further, described both sides side plate is symmetrical arranged.
Further, below described pole shoe, arrange magnetic isolation plate, described magnetic isolation plate is non-magnet material.
Further, described magnetic isolation plate is ceramic base synthetic material.
Further, described permanent magnet is neodymium-iron-boron magnetic material.
Further: described force transmission mechanism is the back-up block of non-magnet material.
The invention has the beneficial effects as follows:
(1) changed by the direction of magnetic field of permanent magnet, realize the control of the magnetic field force of magnet and rail, simple and reliable;
(2) realized the rotation of magnet by driving arrangement, structure is simple, easy to operate;
(3) magnetic isolation plate is as the introducing of wear material, promotes effective friction brake force, and makes pole shoe life;
(4) magnet is arranged in dead-soft steel, solves the precision problem of neodymium iron boron sintering process.
Accompanying drawing explanation
Accompanying drawing 1 is integral structure schematic diagram of the present invention;
Accompanying drawing 2 is perspective view of the present invention;
Accompanying drawing 3 is that permanent magnet is positioned at level attitude and magnetic line of force schematic diagram thereof;
Accompanying drawing 4 is that permanent magnet turns over the position after an angle and magnetic line of force schematic diagram thereof;
Accompanying drawing 5 is that permanent magnet turns over the position after 90 degree and magnetic line of force schematic diagram thereof.
Label in accompanying drawing is respectively:
1. bogie truck; 2. force transmission mechanism;
3. brake magnet; 4. rail;
5. side plate; 6. cover plate;
7. permanent magnet; 8. steel column;
9. pole shoe; 10. the end every;
11. actuating devices; 12. hitches;
13. magnetic line of forces.
Detailed description of the invention
Elaborate below in conjunction with the detailed description of the invention of accompanying drawing to single magnet type permanent magnet track brakes device of the present invention.
See accompanying drawing 1, 2, single magnet type permanent magnet track brakes device, relate to circuit, magnetic field, friction material and mechanical moving parts, comprise the brake magnet 3 that bogie truck 1 and below thereof are connected by force transmission mechanism 2, a distance is had between the rail 4 of brake magnet 3 and track, brake magnet 3 comprises both sides side plate 5, the length direction of side plate 5 is identical with track alignment, cover plate 6 is provided with above side plate 5, side plate 5, through hole is formed between cover plate 6, side plate 5 is permeability magnetic material, cover plate 6 is non-magnet material, permanent magnet 7 is arranged in a low-carbon (LC) steel column 8, form magnetic axis, steel column 8 and through-hole wall leave air gap.The magnetic pole of permanent magnet 7 is located thereon lower surface, and the below of side plate 5 arranges pole shoe 9, and form the non-magnetic end in the middle of pole shoe 9 every 10, arrange actuating device 11 in one end of side plate 5, actuating device 11 drives permanent magnet 7 to rotate.
Brake magnet 3 is required power when device provides absorption rail 4 and hold mode; Actuating device 11 utilizes hydraulic transmission or motor to drive, and controls the rotation of magnetic axis; Pole shoe 9 both as permeability magnetic material for mechanism provides magnetic circuit passage, again as wear material, form friction pair with rail 4; The braking force that pole shoe 9 and this friction pair of rail 4 are formed is delivered on bogie truck 1 by force transmission mechanism 2, thus forms the braking force of train; The hitch 12 of train controls or the working position of equalizing gear, inoperative position.
Magnetic isolation plate is manufactured with diamagnetism friction material below pole shoe 9, magnetic isolation plate is except the effect as the fastening pole shoe 9 of framework, also can prevent because the rub metal powder that comes off of pole shoe 9 during braking and rail 4 is fallen the leakage field caused in pole shoe 9 gap and increased, thus avoid the work efficiency reducing permanent magnet track brakes device because the reduction of pole shoe 9 adsorption affinity.In addition, magnetic isolation plate, as friction material, together can form friction pair with rail 4 with pole shoe 9, can improve friction coefficient thus improve braking force, can obtain higher electromagnetic rail brake device work efficiency.Utilize ceramic base synthetic material in the design, both there is good frictional behaviour, again because of its without iron-based not magnetic conduction.
The magnetic axis, side plate 5, cover plate 6, magnetic isolation plate etc. of brake magnet 3 are topmost movable parties in whole mechanism.Wherein magnetic axis is as propulsion source; Side plate 5 generally adopts low-carbon steel material, both as the bracing frame of mechanism, again for mechanism provides magnetic circuit passage; Cover plate 6 was generally made up of the non-magnet material such as aluminum alloy or corrosion-resistant steel every 10 with the end in pole shoe 9, as the transmission carrier of support structure and power.
The principle of work of single magnet type permanent magnet track brakes device is as follows: after receiving braking instruction, actuating device 11 action, controls magnetic axis 90-degree rotation, and permanent magnet forms open circuit, a magnetization merit part is stored in permanent-magnet material inside, and another part is stored in the space near two magnetic poles with the form of micro-.Magnetic axis, side plate 5, pole shoe 9, a. g., track form outside C/LOOP, the suction of permanent magnet to rail 4 overcomes the confining force of suspension gear, move downward and be adsorbed onto on rail 4, because of reducing of a. g., larger suction compresses pole shoe 9 and rail 4, make it carry out friction and form braking force, by force transmission mechanism 2 by power transmission, finally make the kinetic transformation of train be heat energy.Receive after alleviating instruction, actuating device 11 action, control magnetic axis 90-degree rotation, permanent magnet forms inner closed loop, and magnetization merit is stored in permanent-magnet material inside with the form of magnetic energy product (BH).Magnetic axis, side plate 5 form inner closed loop, and permanent magnet is zero to the suction of rail 4 substantially, and the confining force of hitch 12 overcomes the gravity of device, and upward movement also departs from rail 4, and finally make it to remain on the position apart from rail level about 7mm.
Below the magnetic structure of permanent magnet in brake equipment 7 and principle of work are described.
See accompanying drawing 3, when permanent magnet 7 is in horizontality, and magnetic circuit process unloaded state, its magnetic line of force 13 realizes magnetic force loop by the side plate 5 of magnetic axis both sides, circuit process is N pole → axis body → side plate → S pole → N pole, and do not have magnetic line of force 13 from side plate 5 surface out, magnetic line of force 13 is without pole shoe 9, suction is not produced to rail 4, realizes unloading.
See accompanying drawing 4, when permanent magnet 7 rotates an angle under the driving of actuating device 11, part magnetic line of force 13 produces loop by side plate 5, pole shoe 9 and rail 4, makes the attractive force between pole shoe 9 and rail 4 increasing.
See accompanying drawing 5, when permanent magnet 7 turns to 90 degree of positions, the magnetic line of force 13 of the overwhelming majority is by pole shoe 9 and rail 4, and form the loop of N pole → axis body → side plate 5 → pole shoe 9 → rail 4 → pole shoe 9 → side plate 5 → axis body → S pole → N pole, pole shoe 9 will firmly adsorb rail 4.When pole shoe 9 is in loading condition, rotating shaft must lock, and guarantees safety.
Below be only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a single magnet type permanent magnet track brakes device, comprise bogie truck, it is characterized in that: below described bogie truck, connect a brake magnet by force transmission mechanism, a distance is had between described brake magnet and the rail of track, described brake magnet comprises both sides side plate, the length direction of described side plate is identical with track alignment, cover plate is provided with above described side plate, described side plate, through hole is formed between cover plate, described side plate is permeability magnetic material, described cover plate is non-magnet material, strip shape permanent magnet is set in described through hole, the magnetic pole of described permanent magnet is located thereon lower surface, the below of described side plate arranges pole shoe, non-magnetic space is formed in the middle of described pole shoe, in one end of described side plate, actuating device is set, described actuating device drives described permanent magnet to rotate.
2. single magnet type permanent magnet track brakes device according to claim 1, it is characterized in that: described permanent magnet is arranged in a low-carbon (LC) steel column, form magnetic axis, described steel column is arranged in the through hole in the middle of described side plate, and described steel column and described through-hole wall leave air gap.
3. single magnet type permanent magnet track brakes device according to claim 1, is characterized in that: described both sides side plate is symmetrical arranged.
4. single magnet type permanent magnet track brakes device according to any one of claim 1 to 3, is characterized in that: below described pole shoe, arrange magnetic isolation plate, and described magnetic isolation plate is non-magnet material.
5. single magnet type permanent magnet track brakes device according to claim 4, is characterized in that: described magnetic isolation plate is ceramic base synthetic material.
6. single magnet type permanent magnet track brakes device according to any one of claim 1 to 3, is characterized in that: described permanent magnet is neodymium-iron-boron magnetic material.
7. single magnet type permanent magnet track brakes device according to any one of claim 1 to 3, is characterized in that: described force transmission mechanism is the back-up block of non-magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410677850.5A CN104494635A (en) | 2014-11-24 | 2014-11-24 | Single magnetic type permanent magnet track braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410677850.5A CN104494635A (en) | 2014-11-24 | 2014-11-24 | Single magnetic type permanent magnet track braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104494635A true CN104494635A (en) | 2015-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410677850.5A Pending CN104494635A (en) | 2014-11-24 | 2014-11-24 | Single magnetic type permanent magnet track braking device |
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| CN (1) | CN104494635A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347407A (en) * | 2016-09-25 | 2017-01-25 | 唐山市达泰科技有限公司 | Regional and double-magnetic type permanent-magnet magnetic track braking device |
| WO2018074280A1 (en) * | 2016-10-18 | 2018-04-26 | 新日鐵住金株式会社 | Eddy current rail brake |
| CN109300649A (en) * | 2018-11-15 | 2019-02-01 | 中国铁路总公司 | Linear eddy-current brake electromagnet for rail vehicle |
| CN111776004A (en) * | 2020-07-21 | 2020-10-16 | 马鞍山蓝信环保科技有限公司 | Active permanent magnet braking system for rail transit |
| CN114658773A (en) * | 2022-03-12 | 2022-06-24 | 北京工业大学 | Hybrid excitation magnetic track brake |
Citations (6)
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| DE19943091A1 (en) * | 1999-09-09 | 2001-04-12 | Daimler Chrysler Ag | Permanent magnet rail brake for low platform tram systems employs magnet weight to initiate final application of brake pad to rail |
| EP1477382A2 (en) * | 2003-03-10 | 2004-11-17 | Walker Europe Holding BV | Electrically operable magnetic rail brake device |
| CN102149588A (en) * | 2008-10-02 | 2011-08-10 | 住友金属工业株式会社 | Eddy current rail brake |
| CN202038320U (en) * | 2011-04-07 | 2011-11-16 | 江苏大学 | Linear type permanent magnet track brake |
| CN103085836A (en) * | 2013-02-25 | 2013-05-08 | 江苏大学 | Railway vehicle permanent magnetic rail brake and braking method |
| CN204250075U (en) * | 2014-11-24 | 2015-04-08 | 上海庞丰交通设备科技有限公司 | Single magnet type permanent magnet track brakes device |
-
2014
- 2014-11-24 CN CN201410677850.5A patent/CN104494635A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19943091A1 (en) * | 1999-09-09 | 2001-04-12 | Daimler Chrysler Ag | Permanent magnet rail brake for low platform tram systems employs magnet weight to initiate final application of brake pad to rail |
| EP1477382A2 (en) * | 2003-03-10 | 2004-11-17 | Walker Europe Holding BV | Electrically operable magnetic rail brake device |
| CN102149588A (en) * | 2008-10-02 | 2011-08-10 | 住友金属工业株式会社 | Eddy current rail brake |
| CN202038320U (en) * | 2011-04-07 | 2011-11-16 | 江苏大学 | Linear type permanent magnet track brake |
| CN103085836A (en) * | 2013-02-25 | 2013-05-08 | 江苏大学 | Railway vehicle permanent magnetic rail brake and braking method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347407A (en) * | 2016-09-25 | 2017-01-25 | 唐山市达泰科技有限公司 | Regional and double-magnetic type permanent-magnet magnetic track braking device |
| WO2018074280A1 (en) * | 2016-10-18 | 2018-04-26 | 新日鐵住金株式会社 | Eddy current rail brake |
| CN109803868A (en) * | 2016-10-18 | 2019-05-24 | 新日铁住金株式会社 | Eddy current type rail brake |
| CN109300649A (en) * | 2018-11-15 | 2019-02-01 | 中国铁路总公司 | Linear eddy-current brake electromagnet for rail vehicle |
| CN111776004A (en) * | 2020-07-21 | 2020-10-16 | 马鞍山蓝信环保科技有限公司 | Active permanent magnet braking system for rail transit |
| CN114658773A (en) * | 2022-03-12 | 2022-06-24 | 北京工业大学 | Hybrid excitation magnetic track brake |
| CN114658773B (en) * | 2022-03-12 | 2024-02-06 | 北京工业大学 | Mixed excitation magnetic rail brake |
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Application publication date: 20150408 |