CN1476999A - Vehicle eddy current brake experiment unit - Google Patents
Vehicle eddy current brake experiment unit Download PDFInfo
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- CN1476999A CN1476999A CNA031293557A CN03129355A CN1476999A CN 1476999 A CN1476999 A CN 1476999A CN A031293557 A CNA031293557 A CN A031293557A CN 03129355 A CN03129355 A CN 03129355A CN 1476999 A CN1476999 A CN 1476999A
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Abstract
The eddy-current brake experiment equipment for high-speed track traffic system includes base seat, rotary track, electromagnetic equipment, field power supply, vehicle power supply simulator, computer measurement and control device and driving device. When the rotary track is rotated at high speed, by means of action of field power supply the multipoint distributed measuring sensor can be used for detecting the action state of eddy-current brake and electromagnetic attraction so as to obtain the working state of eddy-current brake.
Description
Technical field
The invention belongs to the mechanical ﹠ electrical technology field, be specifically related to the eddy current brake experimental installation of a kind of high-speed rail transportation system.
Background technology
Along with the development of (comprising maglev system and wheel track High Speed System) of city high-speed rail transportation system, safety control technology is one of the technology that at first must consider and solve.
What travelled on first the commercial off-the-shelf magnetic suspension in the whole world circuit that introduce in Shanghai at present is the TR08 high-speed maglev train of German import.This car the key component of cargo-carring safety control be the eddy current brake device.
How to verify the validity of eddy current brake know-why, the feasibility of checking eddy current brake equipment manufacturing technology, availability, the reliability of checking mobile unit, and verify that the availability of vehicle-mounted detection control system and reliability, the availability of vehicle-mounted excitation source and the feasibility of reliability, test technology and instrument etc. just become supporting technology problem to be solved in the eddy current brake device production domesticization process.
Prove according to new patent searching, the at present domestic eddy current brake experimental system that only has a cover to be used to study the wheel rail system train, but the brake wheel diameter of this system is 1100mm, and maximum line velocity only is 250km/h, and maximum rotation inertia is 166kN.m.s
2, maximum braking force 4.66kN, the fixed installation of braking magnetic pole.External similarly eddy current brake experimental system has the experiment of rotation platform of running velocity greater than 300km/h, but its eddy current brake magnetic pole is to adopt the fixed installation mode.They all can't simulate the distinctive operational mode of TR series magnetic suspension train eddy current brake device.
Summary of the invention
The objective of the invention is to propose a kind of vehicle eddy current brake experimental installation, so that can verify the eddy current brake know-why, and can with the mode of operation compatibility of high-speed maglev train and High-speed Wheel train eddy current brake device, can with the mode of operation compatibility of excitation source, accurately separation eddy braking force and electromagnetic attraction, accurately detect the working process of eddy current brake device.
Design-calculated vehicle eddy current brake experimental installation of the present invention is made up of mechanical system, vehicle power analog machine, controlled alternating current-direct current excitation source, A/C transmission control device, mechanism for testing, COMPUTER DETECTION and control system, and its system architecture as shown in Figure 2.Wherein, the train of mechanism part is made up of mounting base, frequency-changing AC asynchronous dynamo, swing-around trajectory wheel apparatus (detecting of railway wheel), inertia wheel device, magnetic pole fittable slackening device, elastic damper, magnetic attraction and eddy current brake force gauge, tachogen and bindiny mechanism, and its structure as shown in Figure 1.Wherein, swing-around trajectory wheel (testing wheel) 6 is installed on the pedestal 1 by supporting construction 7, inertia wheel 9 is installed on the pedestal 1 by supporting construction 10, inertia wheel shaft 11 is connected with track wheel shaft 8 by coupler 12, braking magnetic pole 4 is arranged in the magnetic pole fittable slackening device 3, and the lateral margin of swing-around trajectory wheel 6 is arranged in the symmetrically arranged braking magnetic pole 4 in both sides.Asynchronous dynamo 2 is installed on the pedestal 1, and motor output shaft is connected with inertia wheel shaft 11 by belt.
Among the present invention, braking magnetic pole 4 becomes fan-shaped distribution in bracing or strutting arrangement 3, and every side can be 4-8.Braking force (magnetic attraction) survey sensor 14 is fixing with pedestal 1 by erection support 13.The center of bracing or strutting arrangement 3 is supported on by radial bearing on the axle sleeve of main shaft 8 of rail wheel (testing wheel) 6.See shown in Figure 3.Bracing or strutting arrangement 3 can be around the axle sleeve rotation of test wheel shaft 8.
Among the present invention, electromagnetic mechanism Stroke Control and electromagnetic attraction measuring mechanism 15 are arranged at the correspondence position of braking magnetic pole 4, become fan-shaped distribution, see shown in Figure 4.This control survey mechanism 15 is connected to form successively by electromagnet core 16, electromagnet winding 17, yoke 18, electromagnetic attraction sensor 19, damping spring 21, Stroke Control baffle plate 22, and its structure is seen shown in Figure 5.
Wherein, the braking magnetic pole 4 of each side constitutes the unit with magnetic Yoke 18, and this unit is installed in the bracing or strutting arrangement 3 by backup bearing, the friction force when moving to reduce electromagnetic unit.Range controlling mechanism is installed and restriction sleeve 20 is parts of bracing or strutting arrangement 3.When in the electromagnetic unit exciting current being arranged, the elastic damping that the electromagnetic mechanism unit can overcome spring 21 is subjected to displacement, and the stroke size of this displacement can be regulated by Stroke Control baffle plate 22.
When carrying out the eddy current brake experiment, eddy current brake power can be carried out separating and measuring by tangent principle shown in Figure 6, and the size of electromagnetic attraction can be obtained by electromagnetic attraction sensor 19, and the size of the stroke of electromagnetic unit is obtained by adjustment travel control baffle plate 22 between experiment.
Working process of the present invention is as follows:
When needs start experimental installation, transmission control device drives frequency-changing AC asynchronous dynamo 2, drive inertia wheel 9, drive test tracks wheel 6 by coupler 12, when testing wheel reaches the rotating speed of regulation, the output of excision transmission control device, start the alternating current-direct current excitation source then and provide excitation to electromagnetic unit, because the high speed relative motion between the tablet on excitation source effect and electromagnetic unit and the testing wheel produces eddy current brake power on the one hand, produces electromagnetic attraction simultaneously.Eddy current brake power produces brake action to testing wheel 6 and inertia wheel 9, and the size of its braking force is handled by computer recording by eddy current brake power separating and measuring sensor 14.The elastic damping that electromagnetic attraction then makes electromagnetic unit (when electromagnetic attraction is enough big) overcome spring is subjected to displacement.The size of electromagnetic attraction is handled by computer recording by electromagnetic attraction sensor 19.In whole experiment, the speed of computing machine while track record wheel, size and frequency (when excitation is output as AC excitation), braking force and the electromagnetic attraction etc. of exciting current.
Computing machine is at first with the output zero clearing of all sensors before experiment.After experiment finished, computing machine carried out data base administration, the processing of various required Synchronization Analysis with all recorded informations, comprises figure and report display printing etc.
Technical characterstic of the present invention is: with rotation mode simulation straight-line motion, with the formed relative motion mechanism of orbiting motion replacement vehicle movement, with big inertia simulation vehicle operating, the maximum line velocity operation with 350km/h, big eddy current brake power, big magnetic attraction, the braking magnetic pole produces the shift simulation train according to the magnetic attraction size safety arrestment operating mode.
Magnetic pole is taked the side arrangement mode, is arranged in the both sides of test tracks wheel.The purpose of Bu Zhiing is like this: on the one hand with the structural similitude of magnetic suspension train, because the eddy current brake magnetic pole of magnetic suspension train also is the both sides that are arranged in the train bottom, when brake action took place, magnetic pole moves respectively to the inside to be held guided way tightly and rubs; On the other hand, can simulate when brake action produces the gap change that causes because of magnetic attraction between eddy current brake magnetic pole and the guided way.
The present invention is by the modular construction of parts, to realize commonality, convertibility.Can be used to verify the validity of eddy current brake know-why, the feasibility of checking eddy current brake equipment manufacturing technology, availability, the reliability of checking mobile unit, and availability and reliability, the availability of vehicle-mounted excitation source and the feasibility of reliability, test technology and instrument etc. of verifying vehicle-mounted detection control system.
Description of drawings
Fig. 1 is a structure drawing of device.
Fig. 2 is the device composition frame chart.
Fig. 3 is electromagnetic structure and supporting construction graph of a relation.
Fig. 4 is the force measurement graph of a relation.
Fig. 5 is the motion and the instrumentation plan of electromagnetic structure.
Fig. 6 measures separation principle figure for braking force.
Number in the figure:
1 is the pedestal of physical construction; 2 is the frequency-changing AC asynchronous dynamo; 3 is the magnetic pole fittable slackening device; 4 are the braking magnetic pole; 5 is roller bearing end cap; 6 are swing-around trajectory wheel (claiming testing wheel again); 7 are swing-around trajectory wheel supporting construction; 8 is the track wheel shaft; 9 is inertia wheel; 10 is the inertia wheel supporting construction; 11 is the inertia wheel shaft, and 12 is coupler; 13 is braking force sensor erection support; 14 is the braking force survey sensor; 15 is electromagnetic mechanism Stroke Control and electromagnetic attraction measuring mechanism; 16 is electromagnet core; 17 is the electromagnet winding; 18 is magnetic Yoke; 19 is the electromagnetic attraction sensor; 20 are range controlling mechanism installation and restriction sleeve; 21 is spring; 22 is the Stroke Control baffle plate; 23 is spring pretightening mechanism and installation end cap.
The specific embodiment
The invention is further illustrated by the following examples.
Among the embodiment, the diameter of detecting of railway wheel is 1380mm, and thickness is 200mm; The diameter of inertia wheel is 1215mm, and thickness is 150mm.Rotating speed is about 1470 rev/mins, and the border line speed of rail wheel test is 350km/h.The rail wheel test is made up of wheel body and tablet (the guided way breadboard on the magnetic suspension circuit).12 magnetic poles, 12 damping springs, 10 magnetic attraction sensors are installed on the magnetic pole fittable slackening device 3.Also have four braking force sensors in addition.
Maximum rotation inertia: ∑ J
Actual=J
Rail wheel+ 2J
Inertia wheel+ J
Zero=934.34Nms
2Long 190 * high by the 250 * thick 90mm of pole core size; The magnet winding is 350 circles, and a.t. is 110 * 350 * 2 * 6.Each electromagnet oad: 260mm * 204mm; Iron core is 90 * 150mm.The every side of maximum perpendicular magnetic attraction is greater than 25kN, and the every side of maximum braking force is greater than 4.5kN when 300km/h.The input power supply of device is 380 volts of 50Hz of 3 phases.The phase control rectifier power supply is output as direct current 440V, maximum current output 500A.The direct current of separate unit excitation source is output as 120A, peak output 150A; The interchange of separate unit excitation source is output as 120A, and peak output is 150A, and frequency is 2 ~ 10Hz; Separate unit excitation source capacity is not less than 50kW, totally four.4 exciting currents are that DC excitation output and the controlled at any time switching of AC excitation output, outgoing current amplitude and frequency are controlled.
(1) replaces the formed relative motion mechanism of vehicle movement (referring to Fig. 2) with the rotation mode simulation straight-line motion of the rail wheel 6 of 1380mm diameter with orbiting motion, with 960.35kN.m.s
2Large rotating inertia simulating vehicle operation, reach the maximum line velocity operation of 350km/h, maximum eddy current brake power reaches 9.0kN, one-sided maximum magnetic flux suction is 25kN.Be applied in the eddy current brake technical study of magnetic suspension train, and be unique at home with the formed experimental system scale of this version.
(2) 12 magnetic poles 4 are arranged in rail wheel 6 both sides, connect realization braking magnetic pole produces the shift simulation train according to the magnetic attraction size safety arrestment operating mode in conjunction with spring damping 21, the arrangement of eddy current brake magnetic pole is referring to the module 4 (this is one of them) of Fig. 3, the position of spring and magnetic pole is referring to the module 15 of Fig. 4, and the connection mode of spring and magnetic pole is referring to Fig. 5.
(3) measuring isolation technics with the special eddy current brake power of the tangent principle design-calculated in the circular configuration, is one of technical characterstic of native system.Braking force is measured separation principle referring to Fig. 5, and the layout of the survey sensor of braking force is referring to Fig. 4 central structure.
Specific implementation process:
Build the reinforced concrete plinth of a dark 2m with the post forming method, the cast iron pedestal 1 of the mechanical device screw by 12 φ 36 long 1m is fixed on the reinforced concrete plinth; Inertia wheel 9 is installed on the pedestal 1 by high-speed bearing and pedestal 10; Testing wheel 6 is installed on the pedestal 1 by high-speed bearing and pedestal 7; Inertia wheel shaft 11 is connected with test wheel shaft 8 by coupler 12; Alternating current dynamo 2 is connected with inertia wheel by belt.
The braking magnetic pole and the magnetic Yoke of each side constitute the unit by steel structure, this unit (scheme drawing is referring to Fig. 5) is installed in the inside of the bracing or strutting arrangement 3 of sector structure by backup bearing, the effect of backup bearing is the friction force when reducing the electromagnetic unit motion, and wherein range controlling mechanism installation and restriction sleeve are the parts of sector structure 3.The center of sector structure 3 is supported on by radial bearing on the axle sleeve of main shaft 8 of testing wheel 6.
Sector structure can be around the axle sleeve rotation of test wheel shaft 9 among the present invention.When in the electromagnetic unit exciting current being arranged, the elastic damping that the electromagnetic mechanism unit can overcome spring 21 is subjected to displacement, and the stroke size of this displacement can be regulated by Stroke Control baffle plate 22.
The structure of the composition of electric apparatus and detection control signal is referring to Fig. 2.
Claims (5)
1. vehicle eddy current brake experimental installation, by mechanical system, the vehicle power analog machine, controlled alternating current-direct current excitation source, the A/C transmission control device, mechanism for testing, COMPUTER DETECTION and control system are formed, it is characterized in that the train of mechanism part is by mounting base, the frequency-changing AC asynchronous dynamo, the swing-around trajectory wheel apparatus, the inertia wheel device, the magnetic pole fittable slackening device, elastic damper, magnetic attraction and eddy current brake force gauge, tachogen and bindiny mechanism form, swing-around trajectory wheel (6) is installed on the pedestal (1) by supporting construction (7), inertia wheel (9) is installed on the pedestal (1) by supporting construction (10), inertia wheel shaft (11) is connected with track wheel shaft (8) by coupler (12), braking magnetic pole (4) is arranged in the magnetic pole fittable slackening device (3), and the lateral margin of swing-around trajectory wheel (6) is arranged in the symmetrically arranged braking magnetic poles in both sides (4).
2. experimental installation according to claim 1 is characterized in that braking magnetic pole (4) and become fan-shaped distribution in bracing or strutting arrangement (3), and every side is 4-8.
3. experimental installation according to claim 1, the center that it is characterized in that bracing or strutting arrangement (3) are supported on by radial bearing on the axle sleeve of main shaft (8) of testing wheel (6).
4. experimental installation according to claim 1, it is characterized in that electromagnetic mechanism Stroke Control and electromagnetic attraction measuring mechanism (15) are arranged at the correspondence position of braking magnetic pole (14), become fan-shaped distribution, this control survey mechanism (15) is connected to form successively by electromagnet core (16), electromagnet winding (17), yoke (18), electromagnetic attraction sensor (19), damping spring (21), Stroke Control baffle plate (22).
5. experimental installation according to claim 1, the input power supply that it is characterized in that device are 380 volts of 50Hz of 3 phases; The phase control rectifier power supply is output as direct current 440V, maximum current output 500A; Four excitation sourcies are that DC excitation output and the controlled at any time switching of AC excitation, outgoing current amplitude and frequency are controlled; The separate unit excitation source, its direct current is output as 120A, peak output 150A, its interchange is output as 120A, and peak output is 150A, and frequency is 2 ~ 10Hz, and power supply capacity is not less than 50kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031293557A CN100395131C (en) | 2003-06-19 | 2003-06-19 | Vehicle eddy current brake experiment unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031293557A CN100395131C (en) | 2003-06-19 | 2003-06-19 | Vehicle eddy current brake experiment unit |
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| Publication Number | Publication Date |
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| CN1476999A true CN1476999A (en) | 2004-02-25 |
| CN100395131C CN100395131C (en) | 2008-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031293557A Expired - Fee Related CN100395131C (en) | 2003-06-19 | 2003-06-19 | Vehicle eddy current brake experiment unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181361A (en) * | 2015-09-08 | 2015-12-23 | 中国铁道科学研究院 | High-speed train eddy current brake performance test device and method |
| CN106050994A (en) * | 2016-04-22 | 2016-10-26 | 江苏苏体运动科技有限公司 | Anti-locking frictionless brake device for car |
| CN107448519A (en) * | 2017-08-01 | 2017-12-08 | 昆山艾迅自动化技术有限公司 | Restraining coil assembly, current vortex loader and test of flutter machine |
| CN107702930A (en) * | 2017-11-08 | 2018-02-16 | 佛山鑫进科技有限公司 | A kind of vehicle is vortexed stopping effect computer testing device |
| CN109187058A (en) * | 2018-11-15 | 2019-01-11 | 中国铁道科学研究院集团有限公司 | Electromagnet is used in a kind of test of linear eddy-current brake |
| CN110542568A (en) * | 2019-09-20 | 2019-12-06 | 西南交通大学 | Rail eddy current braking performance testing device and testing method thereof |
| CN111731340A (en) * | 2020-06-09 | 2020-10-02 | 中铁建电气化局集团南方工程有限公司 | Intelligent electromagnet braking device and method for rail transit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2376625Y (en) * | 1999-05-06 | 2000-05-03 | 济南微机应用研究所 | Brake property test platform for motor vehicle |
| CN2415359Y (en) * | 2000-03-17 | 2001-01-17 | 株洲电力机车厂 | Rail vortex brake testing bench |
| CN2630820Y (en) * | 2003-06-19 | 2004-08-04 | 同济大学 | Vehicle eddy-curvent brake experiment device |
-
2003
- 2003-06-19 CN CNB031293557A patent/CN100395131C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181361A (en) * | 2015-09-08 | 2015-12-23 | 中国铁道科学研究院 | High-speed train eddy current brake performance test device and method |
| CN106050994A (en) * | 2016-04-22 | 2016-10-26 | 江苏苏体运动科技有限公司 | Anti-locking frictionless brake device for car |
| CN107448519A (en) * | 2017-08-01 | 2017-12-08 | 昆山艾迅自动化技术有限公司 | Restraining coil assembly, current vortex loader and test of flutter machine |
| CN107448519B (en) * | 2017-08-01 | 2023-09-29 | 昆山艾迅自动化技术有限公司 | Brake coil assembly, electric vortex loader and vibration testing machine |
| CN107702930A (en) * | 2017-11-08 | 2018-02-16 | 佛山鑫进科技有限公司 | A kind of vehicle is vortexed stopping effect computer testing device |
| CN109187058A (en) * | 2018-11-15 | 2019-01-11 | 中国铁道科学研究院集团有限公司 | Electromagnet is used in a kind of test of linear eddy-current brake |
| CN109187058B (en) * | 2018-11-15 | 2024-03-08 | 中国铁道科学研究院集团有限公司 | Electromagnet for linear eddy current braking test |
| CN110542568A (en) * | 2019-09-20 | 2019-12-06 | 西南交通大学 | Rail eddy current braking performance testing device and testing method thereof |
| CN111731340A (en) * | 2020-06-09 | 2020-10-02 | 中铁建电气化局集团南方工程有限公司 | Intelligent electromagnet braking device and method for rail transit |
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| Publication number | Publication date |
|---|---|
| CN100395131C (en) | 2008-06-18 |
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Granted publication date: 20080618 |