最新刊期
期 6 ， 2017
- 摘要：Based on the constitutive safety technology architecture of high-speed train through "Research and design - Manufacturing - Maintenance guarantee" the whole life cycle, constitutive safety typical techniques of the design and development process were introduced in detail, especially fire prevention, collision and anti-icing technology which concerned by key projects of national advanced rail transit. Combining high-speed train product technology and operation demand outlook, the future development direction of the constitutive safety technology of high-speed train was prospected.关键词：high-speed train;constitutive safety;technology architecture;whole life cycle;fire prevention;collision;anti-icing
- 2498
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- 10
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发布时间：2021-12-13 - 摘要：Necessity and principle of seismic mitigation and isolation design for high-speed railway bridges were expounded, and the norms and standards of seismic mitigation and isolation design both in domestic and overseas industry as well as its most popular devices were introduced,and progress on commonly used seismic mitigation and isolation devices in China. Based on scaled mode of simply support beam girder bridge that commonly applied in China, a typical pendulum and viscous fluid damper were designed and shaking table tests were carried out on middle & low pier separately, which illustrated that those devices had better performance than common spherical bearing in terms of seismic mitigation and isolation. In particular, pendulum was quite suitable for low-pier structure while viscous fluid damper for high-rise and flexible piers. Finally, the paper reviewed the key points for design, such as shear-keys design for pendulum and design attentions for viscous damper.关键词：high-speed railway bridge;shaking table test;pendulum bearing;viscous fluid damper;seismic mitigation and isolation efficiency
- 832
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- 2
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发布时间：2021-12-13 - 摘要：The safety of Lanzhou—Urumqi high-speed railway line, a high-speed railway through the strong wind area, affected with the strong wind environment seriously. Obvious shaking was found at some locations along the railway line during the full-scale test. Based on the field investigation and full-scale test, the three-dimensional, constant, incompressible and Reynolds average SST k-ω double equations were employed to simulate the flow field of one of the typical sections. The maximum velocity mutation points above the line were found and the original flow field was optimized by reconstruction of the local windbreak and shovelling method. It was found that the optimization results were satisfactory. In the case of 90° wind angle, at 3 m position above the 2# rail, the peak-to-peak lateral velocities of 1# transition, 1# ridge, 2# ridge, and 2# transition were 56.3%, 24.4%, 55.8% and 67.2% relative to that of original scheme, respectively关键词：EMUs;high-speed operation;strong wind environment;transition;windbreak;flow field optimization
- 550
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- 3
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发布时间：2021-12-13 - 摘要：HXN6 locomotive is a high-power AC drive hybrid diesel locomotive developed for railways in China, and it is also the largest power hybrid diesel locomotive at present. Large capacity lithium iron phosphate battery was used as power battery for locomotive, and power supply was combined with diesel engine. The new main auxiliary drive integrated circuit and control technology were adopted. The structure and technical characteristics of HXN6 locomotive traction main drive system, microcomputer network control system and auxiliary drive system were introduced in detail. Locomotive in the test and application of the appraisal process showed excellent performance in energy saving and emission reduction.关键词：AC drive;traction system;hybrid power;power battery;HXN6 hybrid diesel locomotive
- 1367
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- 11
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发布时间：2021-12-13 - 摘要：To improve the economic and environmental performance of traditional diesel locomotives, with the operation data analysis of shunt locomotive, parameters of 2 000~2 500 kW hybrid diesel locomotive were determined, which could achieve remarkable fuel-saving and exhaust-reducing efficiency proved by CARS type test, earmark research test and operator practical commissioning.
- 1013
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- 4
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发布时间：2021-12-13 - 摘要：Topology and new technic characteristic of HXN6 hybrid diesel locomotive microprocessor control system were introduced. The control system hardware and software and their optimized design were expatiated in detail. Application indicated that the control system run steadily and met all the demands of user.关键词：characteristic control;speed control;hybrid power;MVB communication;battery control;HXN6 hybrid diesel locomotive
- 837
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- 7
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发布时间：2021-12-13 - 摘要：The development background of HXN6 high power hybrid diesel locomotive traction converter was introduced, as well as the main circuit, working principle, performance parameters and technical features, and design and selection of traction converter key components and cooling system was provided. Ground test and loading test showed that the traction converter could fully meet the performance requirements of the vehicle.关键词：traction convertor;power storage battery;hybrid power;HXN6 hybrid diesel locomotive
- 2037
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- 14
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- 0
发布时间：2021-12-13 - 摘要：Design and main technology parameters of the main circuit of HXN6 hybrid shunting locomotive was introduced in detail. The control performance of shunting application and short-distance operation of the locomotive was expounded, and marshalling operation, pushing operation and application situation were analyzed comparatively. The test showed that: HXN6 locomotive greatly reduced the engine idle time, realized the locomotive braking energy recovery, and greatly improved the staff working conditions.关键词：HXN6 hybrid diesel locomotive;hybrid power;shunting application;short-distance operation
- 781
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- 12
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发布时间：2021-12-13 - 摘要：In order to meet the rail transportation requirements of green, energy-saving and environmental protection, HXN6 high-power hybrid diesel locomotive was developed. The AC drive control system of HXN6 high-power hybrid diesel locomotive was introduced from hardware structure and control functions of drive control unit in detail. Tests and field applications showed that the control system had excellent control performance.关键词：drive control system;hybrid power;hardware structure;control function;HXN6 hybrid diesel locomotive
- 917
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- 12
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发布时间：2021-12-13 - 摘要：The battery management system of the HXN6 hybrid diesel locomotive was researched. From the plan design, practical application and the special circumstances of the SOC (remaining battery power) algorithm, a dynamic SOC calibration strategy based on charge stating was proposed. Under the condition of inaccurate acquisition accuracy in wide current range, the problem of too large estimation bias of SOC was solved, which had good engineering application prospect.关键词：battery management system;SOC estimation;hybrid power;HXN6 hybrid diesel locomotive
- 516
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- 9
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发布时间：2021-12-13 - 摘要：By comparing the dynamics performance of the center-locomotive in different locomotive combinations (HXD2+HXD1 or HXD1+HXD1) at the speed-regulation braking condition of Daqin railway 21 000 t heavy haul train, the conclusion was obtained that the center-locomotive dynamics performance of HXD2+HXD1 combination was better than HXD2+HXD1 combination, and the signal delay had big impact on center-locomotive impulse.关键词：different locomotive combination;Daqin railway;heavy haul train;21 000 t train;dynamics performance;performance analysis
- 932
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- 5
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发布时间：2021-12-13 - 摘要：In order to study the dynamic response of gearbox housing of high-speed train under the excitation of polygonal wheel, a vehicle dynamic model including gear transmission systems and gearbox housing finite element model was set up. Line test and modal analysis to gearbox housing were carried out. Acceleration and dynamic stress in the areas cracking initiation prone to begin were analyzed. The result showed that the 20th order polygonal wheel leads to the 1st order resonance of gearbox housing, which results in significant increase of acceleration and stress, with the acceleration and stress of fault condition 4.6 and 45 times larger than normal condition. The influence of wheel polygonization on gearbox housing was local, and the danger areas were around oil sight glass and radiation rib; Fatigue failure was prone to happen when gearbox housing was on abnormal vibration, and the service lifetime of gearbox housing significantly decreased with the increase of the polygon depth. Attention should be paid to danger point in operation and maintenance decision.关键词：wheel polygonization;gearbox housing;high-speed train;resonance;fatigue
- 566
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- 3
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发布时间：2021-12-13 - 摘要：In locomotive dispatching, no matter respectively or together, the operation of AC-DC and AC-DC-AC electric locomotives both results in complex working conditions, which exerts serious influence current on the line side. The traction drive systems of AC-DC SS4 and AC-DC-AC HXD3 electric locomotives were analyzed. A SIMULINK simulation model of AC-DC locomotive which could automatically judge the operation segment according to the stage and speed of locomotive was established, as well as SIMULINK simulation model of AC-DC-AC locomotive with space vector pulse width modulation control strategy (SVPWM). On this foundation, a hybrid operation model of variable locomotive under the same traction was established. Through the simulation of typical working conditions, line side current harmonics, harmonic volume and the total current distortion rate could be obtained. The conclusion could be used for resonance analysis, harmonic control, dispatching and other aspects of power supply network.关键词：hybrid operation;current on line side;harmonic;AC-DC locomotive;AC-DC-AC locomotive;electric railway
- 748
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- 3
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发布时间：2021-12-13 - 摘要：The low-frequency oscillation phenomenon had been frequently occurred in China electrified railways, which caused the traction locked of the train and the protection tripped of power supply system as well as other accidents. The mechanism of this lowfrequency oscillation in train-traction network system and its influential factors were fully investigated through both simulation and theoretical studies. The impedance modeling method for converter was presented. Based on the stability criterion of impedance rate, the influence of different available factors had been detailed studied, such as the number of trains, equivalent impedance of traction network and the control parameters of onboard rectifier on the low-frequency oscillation of train-traction network system. The results of the theoretical analysis in impedance model were verified by the detailed time domain simulations, which provided a reference for suppressing the low-frequency oscillation in train-traction network systems.关键词：train-traction network system;low-frequency oscillation;impedance model;stability criterion of impedance ratio
- 760
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- 3
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发布时间：2021-12-13 - 摘要：According to the requirements of power concentrated EMUs, a lightweight motor bogie suiting "high-speed railway network" and "general speed railway network" was developed. The main technical and structural characteristics of the bogie was expounded as following: the bogie used B0 axis, the driving device adopt a driving gear + flexible hollow shaft in the coupling of elastic mechanism drive, traction motors were frame suspension, 1 050 mm wheel mounted disc base brake device, rim was lubricated by oil and gas, and the bogie had a smaller wheelbase and less quality. The test results showed that the bogie had good reliability and dynamic performance.关键词：lightweight;power concentrating;EMU bogie;structure;performance verification
- 844
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- 5
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发布时间：2021-12-13 - 摘要：Taking Hefei-Bengbu line as an example, the resonant characteristics of the traction power supply system were analyzed theoretically. It was proved that the harmonics were related to the length of the supply arm, locomotive location, characteristics impedance of the contact line, transmission coefficient and the equivalent impedance of traction substation. On this basis, the simulation model of traction power supply system was established. And the frequency characteristics, current and voltage were tested. Based on the analysis of the influence factors of resonance characteristics, the corresponding suppression measures were proposed. In the early stage of the power supply system design,the optimal design of the power supply system according to the matching condition of the vehicle network could destroy the basic condition of resonance,and achieve the purpose of inhibiting resonance.关键词：AC-DC-AC electric locomotive;harmonic characteristic;resonance;power supply system
- 830
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- 2
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发布时间：2021-12-13 - 摘要：Kinds of different situations for axles impacted when the high-speed trains were running on the track was introduced. The impacts happened reasons were analyzed, and the standard requirements of axle anti-mechanical impacts were illustrated. Schemes of protection against mechanical impacts for axles were focused on, including coating protection and mechanical protection which had been put into application, as well as some other protection ways which were still in the research stage. For every solution, the advantages and disadvantages were analyzed, and the conclusion and the proposal about the protection against mechanical impacts for high-speed train axles were put forward.关键词：axle;anti-mechanical impacts;coating protection;mechanical protection;high-speed train
- 965
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- 2
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发布时间：2021-12-13 - 摘要：In order to grasp the wheel/rail contact state in frigid area harsh conditions and ensure the safe of the train’s operation, this paper studied the wheel/rail contact adhesion properties of the high-speed train which could reach 400 km/h in frigid area, in Russia. The related vehicle dynamics model and the wheel/rail rolling contact model were established. On the basis of above, the main influence factor of wheel/rail contact adhesive coefficient in frigid area was researched, and the correlative peak of adhesion curve and adhesion surface was obtained. Combined with project, under the premise of good wheel/rail contact state and with full use of adhesion conditions, the braking deceleration curve of the train was designed and verified with the correctness, rationality and validity.关键词：frigid area;wheel/rail contact;adhesion coefficient;high-speed train;braking deceleration curve
- 890
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- 3
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发布时间：2021-12-13 - 摘要：To reduce the vibration of car body and protect carbody underframe suspended equipment, the coupling vibration relationship between carbody and carbody underframe suspension equipment was studied to improve vehicle dynamic performance. Considering the elastic vibration of the vehicle body, rigid and flexible coupling dynamics model of the carbody and carbody underframe suspension equipment was established. The influence of the passive control scheme and the semi-active control scheme based on the ceiling damping on vehicle vibration was analyzed and compared. The importance of reasonable parameter matching was analyzed. In addition, taking the quality of suspension equipment as an example, the effect of semi-active control was discussed. The results showed that: the semi-active control scheme could reduce the elastic vibration of the car body under the reasonable parameter matching; when the weight of suspension equipment was larger, semi-active control scheme was better than passive control. Within a certain range, the damping effect was more obvious with the increasing in weight.关键词：carbody underframe suspended system;elastic vibration;semi-active control;parameter matching
- 415
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- 2
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发布时间：2021-12-13 - 摘要：In order to solve the mal-operation problem of the mechanical switches on the intercity EMUs head cover and coupler, a new type of inductive sensor and detection circuit was designed based on electromagnetic induction principle, non-contact signal acquisition and isolation technology, which could check whether the actuating unit was in place without mechanical contact or pressure. The inconsistent problem between the instruction and the state of the position was solved effectively. The detection circuit has been applied in the intercity EMUs, which has the advantages of accurate detection and strong anti-interference ability.关键词：electromagnetic induction;position detection circuit;travel switch;Intercity EMUs;CRH6
- 439
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- 4
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发布时间：2021-12-13 - 摘要：Parameters and performance requirements of supercapacitor low-floor light vehicle was introduced, and T/B characteristic of electric traction system, high-voltage system, energy-storage system, main circuit and key parameters of the drive system were expounded. Matching design was carried out for the traction system to meet the supercapacitor’ s characteristics. Moreover, traction system with independent intellectual property rights was compared with the imported electric traction system. The vehicle had passed the type approval test, which satisfied design requirements.关键词：ow-floor light rail vehicle;traction system;traction converter;supercapacitor
- 1165
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- 5
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发布时间：2021-12-13 - 摘要：In order to investigate the effect of flange lubrication on the wheel wear, tracking test in one metro line was made on the trains equipped with flange lubricator and the ones without flange lubricator. The results showed that for the tested line the wheel flange wear occurred in the range from -40 mm to -30 mm relative to nominal rolling circle with concentrating in the root of the flange, and wheel tread wear occurred in the range from -30 mm to 60 mm. The flange lubrication had little influence on the flange thickness, flange height, and tread wear rate in this metro line, as well as the flange wear area rate of trailers with the wheel profile of LM30, but it could greatly slow down the flange wear for motor cars and trailers with the wheel profile of LM32. By comparison with the trains without flange lubricators, the flange wear rate could decrease 24% for the trains of which only motor cars installed flange lubricators, and 36% for the trains of which all the cars installed flange lubricators. For extending the life of wheel, flange lubricators should be equipped on all the car of the train.关键词：wheel wear;flange lubrication;turning repair;metro vehicle
- 902
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- 2
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发布时间：2021-12-13 - 摘要：The performance of laminated rubber spring is directly related to the safety and stability of the vehicle. The development process of primary laminated rubber spring of a low-floor vehicle was introduced, and primary laminated rubber spring structure and its finite element calculation were described. The reasonability and effect of the finite element model and the calculation results were verified by stiffness test. The properties of the products were tested by the stiffness, creep and fatigue tests, and the performance of the products met the design requirements completely.关键词：low-floor vehicle;primary laminated rubber spring;finite element calculation;vertical stiffness;stress-strain;performance
- 821
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- 2
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发布时间：2021-12-13 - 摘要：In this paper, the calculation of the suspended-modular-tram car with 5 module and low floor passing through curves was designed to study important parameters such as the rotation angle of the articulated equipment and the rotation angle of the coupler and so on. According to the structure characteristics of the tram car and the basic theory of analytic geometry, the calculation method of the rotation angle of the articulated equipment and couplers when the tram car passing through the plane curve and the vertical curve was deduced. At the same times, the dynamic software was used to simulate the tram car passing through curves. The results were basically consistent with the calculated results. The calculation method proposed in this paper could provide the basis for the selection of articulated equipment, gangway bellows and couplers.关键词：low floor;tram car;passing through curves;analytical method;articulated equipment;coupler
- 1445
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- 2
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发布时间：2021-12-13 - 摘要：Based on the structure characteristics of the suspended-modular-tram with 5 module and low floor and the motion characteristics of the articulated equipment, a reasonable division of the vehicle was made, and the calculation model of axle weight and wheel weight was built. With applying force balance and moment balance principle, the axle weight and the wheel weight were figured out, which provided basis for axle weight and wheel weight accuracy control.关键词：ram;low floor;axle load;wheel load;articulated equipment
- 1347
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- 2
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发布时间：2021-12-13 - 摘要：Aiming at the problem that train traction blocked caused by the line supply overvoltage of Ningbo rail transit line 2 phase 1 train, the cause was analyzed, and with the simulation, an improved solution of overvoltage protection logic according to the system characteristics was proposed, which has been tested successfully and applied on trains.关键词：Ningbo rail transit line 2;traction system;line supply overvoltage
- 709
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- 7
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发布时间：2021-12-13
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