CN101995322A - Electromechanical coupling vibration test device for maglev train - Google Patents
Electromechanical coupling vibration test device for maglev train Download PDFInfo
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Abstract
The invention relates to the technical field of single levitation chassis testing for a maglev train, in particular to an electromechanical coupling vibration test device for the maglev train. The device comprises a primary platform for simulating ground support, a secondary platform which is positioned above the primary platform and simulates a track beam, and a track beam rigidity adjusting system for connecting the primary platform and the secondary platform, wherein the track beam rigidity adjusting system and the secondary platform supported by the track beam rigidity adjusting system form simulated maglev train track beam characteristics; and a hydraulic shock excitation system which applies excitation to the primary platform so as to simulate geometrical irregularity of track ground is fixed under the primary platform. The defects of the simplified single-point test or complete-vehicle debugging test for the conventional maglev train are overcome, the complex laboratory simulation of levitation control, elastic beam and coupling vibration environment of a levitation chassis mechanism for the maglev train is realized, the gap in research of key technology for domestic and overseas maglev trains is filled, and a scientific test means is provided for design of a levitation control system of the maglev train, the track beam characteristics and design of the mechanical structure of the levitation chassis.
Description
Technical field
The present invention relates to magnetic-levitation train list suspension frame experimental technique field, especially a kind of magnetic-levitation train mechanical-electric coupling vibration testing device can be simulated at a high speed, the Suspension Control-track girder-suspension frame physical construction coupled vibrations environment of low-speed maglev train and different gauge magnetic-levitation train list suspension framves.
Background technology
The suspension control system of magnetic-levitation train is a gordian technique, owing to have interaction force between Suspension Control and elastic track beam and the vehicle mechanical structure, so there is appreciable impact in the mechanical characteristic of the mechanical characteristic of track girder, suspension shelf structure to the Suspension Control effect of magnetic-levitation train.Also there is not to realize the test unit of this simulation " Suspension Control-elasticity bridge-suspension frame mechanism coupled vibrations environment " at present both at home and abroad; therefore in the practical application and development process of magnetic-levitation train; run into the suspension stability problem of magnetic-levitation train through regular meeting; for alleviating this problem as far as possible; that often track girder is done again in engineering is very big; cause increasing substantially of construction cost, be unfavorable for that the utilization of magnetic-levitation train is promoted.The present suspension test of magnetic-levitation train or adopt simplified model to carry out the Suspension Control research of single-point, be exactly the actual debugging research of adopting car load, the former research is too simple, there is not specific aim, can not reflect complicated " Suspension Control-elasticity bridge-suspension frame mechanism coupled vibrations environment ", the latter belongs to the test under the accomplished fact, can not reach optimum efficiency.Therefore these two kinds of test methods are all undesirable also unreasonable.
Summary of the invention
The technical problem to be solved in the present invention is: for shortcoming and the deficiency that solves above-mentioned existence, a kind of magnetic-levitation train coupled vibrations test unit is provided, can simulate " Suspension Control-elasticity bridge-suspension frame mechanism coupled vibrations environment " of magnetic-levitation train complexity, provide the scientific experiment means for carrying out magnetic floating train suspending Control System Design, track girder type selecting, suspension frame Design of Mechanical Structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of magnetic-levitation train mechanical-electric coupling vibration testing device, adopt two levels of support platform mode, form with the track girder rigidity regulating system that is connected one-level platform and secondary platform by the one-level platform of hydraulic exciting system, simulation ground supports, the secondary platform that is positioned at one-level platform top analog orbit beam.The secondary platform of track girder rigidity regulating system and its support forms simulation magnetic-levitation train track girder characteristic, and the hydraulic exciting system applies excitation to the one-level platform can simulate how much irregularities in ground.
Further, described hydraulic exciting system comprises the hydraulic actuator that supports the one-level platform, data acquisition unit, velograph, accelerometer, oil thermometer, fuel pressure gage and detection alarm device automatically, hydraulic actuator has 4 at least, the hydraulic actuator lower end is connected with placing ground floor mounted basic platform by T type mount pad, and the hydraulic actuator upper end is connected with the one-level platform by mount pad.Hydraulic actuator is by computer control; can science, control action device operating condition accurately; has parameters such as load, displacement, oil temperature, oil pressure and error multiple protection functions such as detection and fault alarm automatically simultaneously; and have time history data acquisition and a data processing function; by in the hydraulic exciting system, adorning the sensor of displacement, speed and acceleration, be convenient for measuring power, speed and the acceleration of critical component.
Described track girder rigidity regulating system comprises and is fixed on the steel spring group that is used to support the secondary platform on the one-level platform, the steel spring group is fixed in the top of one-level platform by spring mounting seat, have the spring mounting seat end face of four steel springs to be higher than other spring mounting seat end faces in the steel spring group, four high spring mounting seats are positioned at the vertical spacing stop of one-level platform upside periphery as the secondary platform.Realize the adjusting of support stiffness solving different track girder stiffness characteristics of the simulation of not accomplishing in the reality and vertical flexural vibration frequency characteristic by the number of springs that changes the steel spring group.
Described one-level platform bottom is provided with the backup system that prevents the horizontal shift of one-level platform, backup system comprises horizontally disposed 2 cross-ties and 1 longitudinal tie, one end of every pull bar is connected the bottom of one-level platform by oscillating bearing, and the other end is connected with the ground point of fixity by oscillating bearing.
Described secondary platform is welded into hollow van-type concave structure by longeron, crossbeam and base plate, by increase or reduce the adjusting that the standard quality piece is realized the track girder quality in concave structure.Offer lightening hole on the longeron of described secondary platform and/or the crossbeam.Reduce the quality of secondary platform.
Described one-level platform is the hollow frame structure that joist steel is welded, and the upper surface of hollow frame structure, lower surface and side have lightening hole.Reduce the quality of one-level platform.
The course of work of the present invention is that a suspension frame of magnetic-levitation train is suspended in the secondary platform by the electromagnetic force of suspension control system.The rigidity of the quality of secondary platform and steel spring supporting thereof, the quality of analog orbit beam and the single order of beam or second order vertical flexural vibration frequency characteristic.When levitation gap changes, when the suspension electromagnetic force is initiatively adjusted, also can cause the vibration of this secondary platform, and the vibration characteristics of secondary platform is consistent with the characteristic of track girder.The secondary platform is supported on the one-level platform by steel spring again, is equivalent to how much supports of actual track, and the hydraulic exciting system can apply the vertical direction excitation to the one-level platform as required, with how much irregularities of analog line.In train operation, the existence of how much irregularities makes levitation gap impossible invariable, therefore suspension control system just will constantly initiatively be adjusted, to keep levitation gap, this active adjustment also is a kind of excitation to track girder, track girder is also vibrated, therefore just formed " Suspension Control-elasticity bridge-suspension frame physical construction coupled vibrations environment " of magnetic-levitation train complexity by test unit of the present invention.When hydraulic pressure applied excitation can not for the one-level platform, then the simulation of this test unit was the floating quiet outstanding operating mode of listing of magnetic, can study the quiet outstanding stability problem of train on different track girders.
The invention has the beneficial effects as follows, a kind of magnetic-levitation train mechanical-electric coupling vibration testing device of the present invention, the single-point test of current magnetic-levitation train simplification or the deficiency of car load debugging test have been overcome, realized the laboratory simulation of " Suspension Control-elasticity bridge-suspension frame mechanism coupled vibrations environment " of magnetic-levitation train complexity, remedied the blank in the research of domestic and international magnetic-levitation train gordian technique, provide the scientific experimentation means for carrying out magnetic floating train suspending Control System Design, track girder characteristic, suspension frame Design of Mechanical Structure.The present invention adopts two levels of support platform mode, feasible simulation when having the excitation of circuit how much irregularities or during static suspension, the coupling of track girder and Suspension Control; Adjust secondary platform quality and support steel spring quantity, can realize simulation, and in actual track, not accomplish this point various track girder characteristics; Span, quality, rigidity and Deflection Relationship by track girder can realize the simulation of track girder different spans, amount of deflection, and also be difficult to accomplish this point in practice; This test unit is simple in structure, good from heavy and light, simulate effect, and can satisfy simultaneously at a high speed, the testing requirements of the magnetic-levitation train list suspension frame of middle low-speed maglev train and different gauges.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a perspective view of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is the left view of Fig. 2.
Among the figure 1, the one-level platform, 2, the secondary platform, 3, track girder rigidity regulating system, 31, steel spring group, 4, hydraulic exciting system, 41, hydraulic actuator, 42, T type mount pad, 43, mount pad, 5, floor mounted basic platform, 61, cross-tie, 62, longitudinal tie, 7, the section of track, 8, F type track.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
14 hydraulic pressure of F rail, one-level platform with low-speed maglev train support, secondary platform 2 maximum 4 * 5 steel springs are supported for example.
As Fig. 1, Fig. 2, a kind of magnetic-levitation train mechanical-electric coupling vibration testing device shown in Figure 3, but mainly by the one-level platform 1 of hydraulic exciting system 4, simulation ground supports, be positioned at the secondary platform 2 of one-level platform 1 top analog orbit beam quality, the waterproof prosposition of the track girder rigidity regulating system 3 that is made of the adjustable steel spring of quantity and one-level platform 1 moves backup system and forms.Secondary platform 2 supports with steel spring and forms spring-quality system analog orbit beam characteristic, by changing the adjusting that steel spring quantity realizes support stiffness.
Hydraulic exciting system 4 is made up of 4 hydraulic actuators 41, data acquisition unit, velograph, accelerometer, oil thermometer, fuel pressure gage and automatic fault detection warning device, 4 hydraulic actuator 41 lower ends are connected with floor mounted basic platform 5 by T type mount pad 42, and the upper end is connected with one-level platform 1 by mount pad 43.Hydraulic actuator 41 is equipped with displacement, speed, acceleration transducer by computer control in the hydraulic exciting system 4, be convenient for measuring power, speed and the acceleration of critical component.The software and hardware of the control system of computing machine has complete opening, can realize secondary development.
One-level platform 1 is the hollow frame structure that is welded by joist steel.The place, four angles of one-level platform 1 lower plane is fixed with the mount pad that is connected with hydraulic actuator 41,4 * 5 helical steel springs mount pads of last floor plan, wherein the steel spring mount pad end face of position, four angles is higher than the steel spring mount pad of other positions, high steel spring mount pad prevents that as the vertical spacing stop of secondary platform 2 fortuitous event such as secondary platform 2 invar spring breakages falls in the process of the test.On one-level platform 1 upper and lower surface and crossbeam, longeron, have lightening hole, reduce the quality of one-level platform 1 as far as possible.
Appropriate location, one-level platform 1 bottom is horizontally disposed 2 cross-ties 61 and 1 longitudinal tie 62, one end of every pull bar is connected with one-level platform 1 bottom by oscillating bearing to be seen, the other end is connected with the ground point of fixity by oscillating bearing, forms the backup system that prevents 1 horizontal shift of one-level platform.
Secondary platform 2 is the spill hollow structures that are welded by longeron, crossbeam and base plate.Longeron is welded by two channel-section steel counterparts, crossbeam is by joist steel and longeron welding, secondary platform 2 lower surfaces are provided with and one-level platform 1 corresponding helical steel springs mount pad, the outside surface of two longerons is reserved with high-speed magnetic floating track mounting hole and middle low speed magnetic floating track mounting hole, satisfy the installation requirement of high speed, low-speed maglev train and different gauge magnetic-levitation train tracks, adapt to the test of dissimilar magnetic-levitation trains.
The rail system of middle low-speed maglev train comprises the section of track 7 and F type track 8, the section of track 7 is installed on secondary platform 2 tops, be furnished with rubber blanket and vertical supporting construction between the section of track 7 and the mounting platform, can realize that track is connected with the elasticity of track mounting platform, two F type track girders are directly installed on the section of track 7, during test, the suspension frame is suspended on the F type track 8.
Design has lightening hole on the crossbeam of secondary platform 2, the longeron, in the bottom surface of spill hollow structure bolt hole is arranged, and in order to when adding the standard quality piece, mass can be connected by bolt and secondary platform 2.Secondary platform 2 feasible simulation the Dynamic Coupling effect between track girder and Suspension Control, by coupling platform quality with change support stiffness, can simulate various track girder characteristic, but the also various spans of simulating beam and amount of deflection ratio.
The present invention can satisfy the mechanical-electric coupling vibration requirement of high speed, low-speed maglev train and different gauge magnetic-levitation train list suspension framves.Can realize the laboratory simulation of " Suspension Control-elasticity bridge-suspension frame physical construction coupled vibrations environment " of magnetic-levitation train complexity.
During high-speed maglev train, the guide rail of high-speed magnetic floating is directly installed on the left and right longeron of secondary platform 2, and during test, the suspension frame directly is suspended in the guide rail pole surface.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the instructions, must determine its technical scope according to the claim scope.
Claims (7)
1. magnetic-levitation train mechanical-electric coupling vibration testing device, it is characterized in that: have the simulation ground supports one-level platform (1), be positioned at the secondary platform (2) of one-level platform (1) top analog orbit beam and be connected one-level platform (1) and the track girder rigidity regulating system (3) of secondary platform (2), track girder rigidity regulating system (3) forms simulation magnetic-levitation train track girder characteristic with the secondary platform (2) of its support, and the below of one-level platform (1) is fixed with one-level platform (1) is applied the hydraulic exciting system (4) of excitation with how much irregularities in analog orbit ground.
2. a kind of magnetic-levitation train mechanical-electric coupling vibration testing device according to claim 1, it is characterized in that: described hydraulic exciting system (4) comprises hydraulic actuator (41), data acquisition unit, velograph, accelerometer, oil thermometer, fuel pressure gage and the automatic detection alarm device that supports one-level platform (1), hydraulic actuator (41) has 4 at least, hydraulic actuator (41) lower end is connected with placing ground floor mounted basic platform (5) by T type mount pad (42), and hydraulic actuator (41) upper end is connected with one-level platform (1) by mount pad (43).
3. a kind of magnetic-levitation train mechanical-electric coupling vibration testing device according to claim 1, it is characterized in that: described track girder rigidity regulating system (3) comprises and is fixed on the steel spring group (31) that is used to support secondary platform (2) on the one-level platform (1), steel spring group (31) is fixed in the top of one-level platform (1) by spring mounting seat, have the spring mounting seat end face of four steel springs to be higher than other spring mounting seat end faces in the steel spring group (31), four high spring mounting seats are positioned at the vertical spacing stop of one-level platform (1) upside periphery as secondary platform (2).
4. a kind of magnetic-levitation train mechanical-electric coupling vibration testing device according to claim 1, it is characterized in that: described one-level platform (1) bottom is provided with the backup system that prevents one-level platform (1) horizontal shift, backup system comprises horizontally disposed 2 cross-ties (61) and 1 longitudinal tie (62), one end of every pull bar is connected the bottom of one-level platform (1) by oscillating bearing, and the other end is connected with the ground point of fixity by oscillating bearing.
5. a kind of magnetic-levitation train mechanical-electric coupling vibration testing device according to claim 1, it is characterized in that: described secondary platform (2) is welded into hollow van-type concave structure by longeron, crossbeam and base plate, by increase or reduce the adjusting that the standard quality piece is realized the track girder quality in concave structure.
6. a kind of magnetic-levitation train mechanical-electric coupling vibration testing device according to claim 5 is characterized in that: offer lightening hole on the longeron of described secondary platform (2) and/or the crossbeam.
7. a kind of magnetic-levitation train mechanical-electric coupling vibration testing device according to claim 1, it is characterized in that: the hollow frame structure that described one-level platform (1) is welded for joist steel, the upper surface of hollow frame structure, lower surface and side have lightening hole.
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| CN 201010509773 CN101995322B (en) | 2010-10-18 | 2010-10-18 | Electromechanical coupling vibration test device for maglev train |
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| CN 201010509773 CN101995322B (en) | 2010-10-18 | 2010-10-18 | Electromechanical coupling vibration test device for maglev train |
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| CN102252815A (en) * | 2011-06-29 | 2011-11-23 | 上海磁浮交通发展有限公司 | Maglev vehicle unilateral track coupling vibration test bed device |
| CN102864703A (en) * | 2012-09-24 | 2013-01-09 | 唐山轨道客车有限责任公司 | Debugging device for maglev train |
| CN103344445A (en) * | 2013-06-27 | 2013-10-09 | 中国人民解放军国防科学技术大学 | Detecting platform of medium-low speed magnetic levitation line feed unit |
| CN103674583A (en) * | 2013-12-03 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Vertical vibration reducing performance test method for railway vehicles |
| CN105299128A (en) * | 2015-11-27 | 2016-02-03 | 上海工程技术大学 | Double-acting platform type parallel mechanism vibration reducing platform |
| CN106441953A (en) * | 2016-09-21 | 2017-02-22 | 中国人民解放军国防科学技术大学 | Coupled resonance test device for magnetic suspension train track |
| CN106809251A (en) * | 2015-12-02 | 2017-06-09 | 北京控股磁悬浮技术发展有限公司 | The monitoring and Forecasting Methodology of magnetic suspension train rail irregularity, device and system |
| CN107063625A (en) * | 2017-06-12 | 2017-08-18 | 中南大学 | A kind of device for bridge testing model force exciting |
| CN107101839A (en) * | 2017-06-07 | 2017-08-29 | 中国人民解放军国防科学技术大学 | A kind of single module suspension control system tests detection platform |
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| CN109056432A (en) * | 2018-10-12 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of adjustable track beam structure of rigidity and magnetic-levitation test wire |
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| CN109883735A (en) * | 2019-03-11 | 2019-06-14 | 中国科学院力学研究所 | The experimental rig that levitation train vibrates under the conditions of a kind of analog aerodynamic force |
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| CN102252815A (en) * | 2011-06-29 | 2011-11-23 | 上海磁浮交通发展有限公司 | Maglev vehicle unilateral track coupling vibration test bed device |
| CN102864703A (en) * | 2012-09-24 | 2013-01-09 | 唐山轨道客车有限责任公司 | Debugging device for maglev train |
| CN103344445A (en) * | 2013-06-27 | 2013-10-09 | 中国人民解放军国防科学技术大学 | Detecting platform of medium-low speed magnetic levitation line feed unit |
| CN103344445B (en) * | 2013-06-27 | 2014-11-26 | 中国人民解放军国防科学技术大学 | Detecting platform of medium-low speed magnetic levitation line feed unit |
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| CN106809251A (en) * | 2015-12-02 | 2017-06-09 | 北京控股磁悬浮技术发展有限公司 | The monitoring and Forecasting Methodology of magnetic suspension train rail irregularity, device and system |
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| CN106441953A (en) * | 2016-09-21 | 2017-02-22 | 中国人民解放军国防科学技术大学 | Coupled resonance test device for magnetic suspension train track |
| CN106441953B (en) * | 2016-09-21 | 2019-12-03 | 中国人民解放军国防科学技术大学 | A kind of magnetic suspension train track coupled resonance experimental rig |
| CN107101839A (en) * | 2017-06-07 | 2017-08-29 | 中国人民解放军国防科学技术大学 | A kind of single module suspension control system tests detection platform |
| CN107101839B (en) * | 2017-06-07 | 2018-12-28 | 中国人民解放军国防科学技术大学 | A kind of single module suspension control system experiment detection platform |
| CN107063625A (en) * | 2017-06-12 | 2017-08-18 | 中南大学 | A kind of device for bridge testing model force exciting |
| CN107894341A (en) * | 2017-12-13 | 2018-04-10 | 中国人民解放军国防科技大学 | Single bogie calibration device for dynamic rail inspection system |
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| CN109131429A (en) * | 2018-09-27 | 2019-01-04 | 中国人民解放军国防科技大学 | High-speed magnetic suspension track irregularity detection test device |
| CN109131429B (en) * | 2018-09-27 | 2024-05-10 | 中国人民解放军国防科技大学 | High-speed magnetic levitation track irregularity detection test device |
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