CN106769120B - Railway vehicle elastic wheel loading test bed - Google Patents
Railway vehicle elastic wheel loading test bed Download PDFInfo
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- CN106769120B CN106769120B CN201611252554.6A CN201611252554A CN106769120B CN 106769120 B CN106769120 B CN 106769120B CN 201611252554 A CN201611252554 A CN 201611252554A CN 106769120 B CN106769120 B CN 106769120B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
- G01M17/10—Suspensions, axles or wheels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention relates to the technical field of railway vehicle elastic wheel loading tests, and discloses a railway vehicle elastic wheel loading test bed which comprises a base, a fatigue loading assembly, a static loading assembly and a load loading assembly, wherein the load loading assembly can apply axial and radial force to a tested wheel, the fatigue loading assembly and the static loading assembly are arranged on the base, the fatigue loading assembly comprises a driving assembly and a braking assembly, the fatigue loading assembly is matched with the load loading assembly to simulate the working condition of the motion process of the tested wheel, and the static loading assembly can fix the tested wheel and is matched with the load loading assembly to simulate the working condition of the tested wheel when in static state. The invention can simulate the comprehensive stress condition of the elastic wheel under static or different movement speeds to obtain comprehensive assessment data, thereby providing test data support for the production and processing, performance improvement and the like of the elastic wheel.
Description
Technical Field
The invention relates to the technical field of railway vehicle elastic wheel loading tests, in particular to a railway vehicle elastic wheel loading test bed.
Background
When the rail vehicle is running on urban ground or overpass, the wheel track noise has a serious impact on the living environment along the line, and thus the elastic wheel application occurs. The elastic wheel has the basic structure that a rubber piece is embedded between the steel wheel rim and the steel wheel core, so that the running stability of the railway vehicle is improved, the vibration noise in the running process is reduced, and the abrasion of the wheel rail is improved. The embedded wheel rubber parts of the existing elastic vehicle are arranged in a V shape, and the arrangement mode enables the elastic vehicle to have axial rigidity and radial rigidity at the same time.
The related research results show that compared with the rigid wheels, the elastic wheels can reduce the noise by 5-8 dB, and the noise reduction effect of the elastic wheels is better for the high-frequency spike noise with the frequency of more than 1000Hz, and can be reduced by 15-30 dB compared with the rigid wheels. Whereas for ground vibration levels, the elastic wheels can be reduced by up to 70% compared to the stiffer wheels.
With more and more elastic wheel applications and researches, in order to conveniently provide accurate test data for the production and processing of elastic wheels, performance improvement and the like, a railway vehicle elastic wheel loading test device is also an urgent requirement.
Disclosure of Invention
First, the technical problem to be solved
The invention provides a railway vehicle elastic wheel loading test bed which is used for checking the axial and radial rigidity and torsion resistance of an elastic wheel under dynamic and static loads and the fatigue performance of the wheel, so as to provide test data support for the production and processing, performance improvement and the like of the elastic wheel.
(II) technical scheme
In order to solve the technical problems, the invention provides a railway vehicle elastic wheel loading test bed which comprises a base, a fatigue loading assembly, a static loading assembly and a load loading assembly,
the load loading assembly can apply axial and radial force to the tested wheel, the fatigue loading assembly and the static loading assembly are arranged on the base, the fatigue loading assembly comprises a driving assembly for driving the tested wheel to move and a braking assembly for simulating acceleration, deceleration and braking of the tested wheel, and the fatigue loading assembly is matched with the load loading assembly to simulate the working condition of the tested wheel in the moving process;
the static loading assembly can fix the tested wheel and simulate the working condition of the tested wheel in a static state by matching with the load loading assembly.
Further, the driving assembly comprises a motor, a driving shaft driven by the motor, and a driving wheel connected with and driven by the driving shaft, wherein the driving wheel is contacted with and drives the tested wheel to move.
Further, the device also comprises a driving platform arranged on the base, the motor drives the driving shaft through a transmission mechanism, the driving shaft is supported and fixed through a first bearing group,
the motor, the driving wheel, the driving shaft, the transmission mechanism and the first bearing group are all fixed on the driving platform.
Further, the device also comprises a bidirectional sliding table arranged on the base, wherein the lower end of the bidirectional sliding table is fixedly provided with a movable loading wheel shaft through a second bearing group, the braking component is a shaft brake, the upper end of the movable loading wheel shaft is connected with the shaft brake, and the lower end of the movable loading wheel shaft is used for connecting the tested wheels;
the load loading assembly can apply acting force consistent with the axial direction and the radial direction of the tested wheel to the bidirectional sliding table, and the bidirectional sliding table drives the tested wheel to squeeze the driving wheel, so that the acting force of the axial direction and the radial direction of the tested wheel is simulated.
Further, the dynamic loading wheel shaft comprises an upper section and a lower section which are connected through flanges, wherein the lower section of the dynamic loading wheel shaft is detachably connected with the tested wheel.
Further, the static loading assembly comprises a shaft supporting seat, a static loading wheel shaft, a shaft locker and a static loading adapter,
the static loading wheel axle is fixed on the base through an axle supporting seat, the tested wheel is arranged on the static loading wheel axle,
the shaft locker is used for locking and fixing the tested wheel,
the static loading adapter is connected to the outer edge of the tested wheel and can be connected with the load loading assembly, and the load loading assembly applies axial and radial force to the tested wheel through the static loading adapter.
Further, the load loading assembly includes two loading actuation hydraulic cylinders, one of which applies an axial force to the wheel under test and the other of which applies a radial force to the wheel under test.
Further, the driving wheel is of a two-layer structure connected through threads, the outer layer of the driving wheel is used for being in contact with the tested wheel, and the contact surface of the outer layer of the driving wheel and the tested wheel is of a track structure;
the inner layer of the driving wheel is fixedly connected with the driving shaft.
Further, the test control system is used for controlling the actions of the fatigue loading assembly and the load loading assembly, collecting performance indexes of the tested wheels, carrying out relevant records and outputting;
the dust collection opening of the dust collection assembly is arranged below the contact position of the driving wheel and the tested wheel.
Further, cooling systems are provided corresponding to the first bearing set, the second bearing set and the shaft brake, respectively.
(III) beneficial effects
The technical scheme of the invention has the following advantages:
the elastic wheel loading test bed for the railway vehicle can be compatible with conventional elastic wheels with various diameters, can simulate the comprehensive stress condition of the elastic wheels at rest or at different movement speeds, and can obtain comprehensive assessment data, so that test data support is provided for production and processing, performance improvement and the like of the elastic wheels.
In addition to the technical problems, features of the constituent technical solutions and advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and advantages brought by the technical features of the technical solutions, further description will be made with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic top view of a rail vehicle spring-loaded test stand according to embodiment 1 of the present invention with a wheel under test in a fatigue loaded state;
FIG. 2 is a schematic front view of a rail vehicle elastic wheel loading test stand according to embodiment 1 of the present invention when a wheel under test is in a fatigue loading state;
fig. 3 is a schematic top view of the elastic wheel loading test stand for railway vehicle according to embodiment 1 of the present invention when the tested wheel is under static loading.
In the figure: 1: a hydraulic oil source; 2: a base; 3: a shaft support base; 4: static loading wheel axle; 5: a shaft locker; 6: a static load adapter; 7: a two-way sliding table; 8: a shaft brake; 9: loading an actuating hydraulic cylinder; 10: a dynamic loading wheel shaft; 11: a first bearing set; 12: a drive shaft; 13: a transmission mechanism; 14: a motor; 15: a drive platform; 16: a dust collection assembly; 17: a driving wheel; 18: a tested wheel; 19: a measurement and control system; 20: and a second bearing group.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" means two or more, and the meaning of "a plurality", "a plurality of roots", "a plurality of groups" means one or more.
As shown in fig. 1, the rail vehicle elastic wheel loading test bed provided by the embodiment of the invention comprises a base 2, a fatigue loading assembly, a static loading assembly and a load loading assembly.
Wherein the base 2 comprises a base frame comprising an upper side, a lower bottom and sides connected between the upper side and the lower bottom, i.e. the base frame forms a space for accommodating the device. The base 2 is a supporting portion of the whole elastic wheel test stand, and other main components are mounted on the base.
The load loading assembly can apply axial and radial force to the tested wheel, the fatigue loading assembly and the static loading assembly are arranged on the base, the fatigue loading assembly comprises a driving assembly for driving the tested wheel 18 to move and a braking assembly for simulating acceleration, deceleration and braking of the tested wheel 18, the fatigue loading assembly is matched with the load loading assembly to simulate the working condition of the tested wheel in the moving process, and the static loading assembly can fix the tested wheel and is matched with the load loading assembly to simulate the working condition of the tested wheel in the static state.
It should be noted that, the fatigue loading assembly of the embodiment is mainly used for simulating the working conditions of radial and axial bearing loads of the wheels in the long-time movement process, and the static loading assembly is used for simulating the working conditions of radial and axial bearing loads of the wheels in the static state; the load loading assembly is an actuating mechanism of the test bed for loading acting force on the tested wheel.
As shown in fig. 1 or 3, the drive assembly of the fatigue loading assembly comprises a drive motor 14, a transmission 13, a drive shaft 12, a first bearing set 11, a drive wheel 17 and a drive platform 15. The driving motor 14, the driving wheel 17, the driving shaft 12, the transmission mechanism 13 and the first bearing set 11 are fixed on the driving platform 15, the lower end surface of the driving platform 15 is connected with the lower bottom surface of the base frame, so that the distance between the driving wheel 17 and the tested wheel 18 can be adjusted by adjusting the position of the driving platform 15, and the tested wheel 18 with different sizes can be replaced conveniently.
Specifically, the driving motor 14 is preferably a variable frequency motor, so that the rotation speed of the driving motor 14 can be adjusted by changing the power supply frequency of the motor, thereby adjusting the output power of the motor; the transmission mechanism 13 is a belt transmission mechanism, one end of the transmission mechanism is connected with an output rotating shaft of the driving motor 14, the other end of the transmission mechanism is connected with the rear end of the driving shaft 12, and the main function of the transmission mechanism is to transmit the output torque of the driving motor 14 to the driving shaft 12; the driving shaft 12 is arranged on the driving platform 15 through the first bearing group 11, the rear end of the driving shaft 12 is connected with the transmission mechanism 13, the front end of the driving shaft 12 is connected with the driving wheel 17, and the driving wheel is contacted with the tested wheel 18 and drives the tested wheel 18 to move.
It should be noted that, the first bearing set 11 is a supporting mechanism of the driving shaft 12, and may be provided with a cooling system, and the main function is to ensure that the driving shaft 12 rotates at a high speed.
As a preferred embodiment, the wheel body of the driving wheel 17 is in a two-layer structure, the outer layer is a replaceable component and is in threaded connection with the inner layer, the outer layer is in contact with the tested wheel 18, the contact surface between the two wheels is designed to be in a track pattern, so that the movement condition of the tested wheel 18 on the track is simulated, and the inner layer is connected with the driving shaft 12.
The driving wheel 17 is arranged in a two-layer structure, on the one hand, the outer layer structure is replaceable, and when the outer layer structure is damaged in the test process, only the outer layer structure needs to be replaced; meanwhile, the contact surface of the outer layer structure and the tested wheel 18 is designed to be a track surface, so that the movement process of the tested wheel 18 contacted with the track in the actual process can be accurately simulated, and the test data is more realistic and convincing.
As shown in fig. 1 or 3, for better fatigue loading tests, the test wheel 18 is fixed by a bidirectional sliding table 7 arranged on the bottom surface of the base, wherein the brake component can be a shaft brake 8.
As shown in fig. 1 or 3, the specific arrangement of the tested wheel 18 of the elastic wheel loading test stand for the railway vehicle in this embodiment is that the lower section of the bidirectional sliding table 7 is fixed with a dynamic loading wheel axle 10 through a second bearing group 20, the upper end of the dynamic loading wheel axle 10 is connected with the axle brake 8, and the lower end of the dynamic loading wheel axle 10 is used for connecting with the tested wheel 18.
It should be noted that, the second bearing set 20 is a supporting mechanism of the dynamic loading axle 10, and the second bearing set 20 is provided with a cooling system, and the main function is to ensure high-speed rotation of the dynamic loading axle 10.
The tested wheel 18 of the elastic wheel loading test bed of the railway vehicle is arranged on the movable loading wheel axle 10, the movable loading wheel axle 10 can be preferably composed of two sections, the two sections are connected by adopting flanges, and the section connected with the tested wheel 18 can be replaced and is used for being suitable for elastic wheels with different sizes; the other section is arranged on the second bearing group 20, the end part of the second bearing group is connected with the shaft brake 8, namely, the shaft brake 8 is arranged at the tail part of the dynamic loading wheel shaft 10, the main function of the shaft brake 8 is to provide braking moment for the tested wheel 18, a cooling component can be arranged on the shaft brake 8, and the braking moment is conveniently provided for a long time or frequently.
It is easy to understand that the shaft brake 8, the movable loading wheel shaft 10 and the second bearing group 20 for installing the movable loading wheel shaft 10 are all installed on the upper installation surface of the bidirectional sliding table 7, and the lower surface of the bidirectional sliding table 7 is connected with the base 2, so that the arrangement between devices is simplified, and the positions of the wheels to be tested can be adjusted by adjusting the positions of the bidirectional sliding table 7; meanwhile, two degrees of freedom are arranged between the bidirectional sliding table 7 and the base 2, namely the axial direction and the radial direction of the tested wheel 18, the bidirectional sliding table 7 can move in two directions at the same time, and in the fatigue loading process, the bidirectional sliding table 7 can move along with an output rod of the loading actuating hydraulic cylinder 9; in this way, the load loading assembly applies the acting force consistent with the axial direction and the radial direction of the tested wheel to the bidirectional sliding table, and the bidirectional sliding table moves to drive the tested wheel to squeeze the driving wheel, so that the acting force of the axial direction and the radial direction of the tested wheel is simulated.
As shown in fig. 3, the static loading assembly includes a static loading axle, an axle locker and a static loading adapter, the axle supporting seat 3 is fixed on the base, the tested wheel 18 is installed on the static loading axle 4 during the static loading process, the static loading axle 4 is installed on the axle supporting seat 3, and the static loading axle is fixed by the axle locker 5, and the loading actuating hydraulic cylinder 9 transmits the loading force to the tested wheel 18 through the static loading adapter 6.
It should be noted that, when the tested wheel 18 is under the static loading test condition, the tested wheel 18 is sleeved on the static loading wheel shaft 4, and the tested wheel 18 is not in contact with the base, that is, when the tested wheel 18 is under the static loading test condition, the tested wheel 18 is supported by the static loading wheel shaft 4, and the loaded actuating hydraulic cylinder 9 applies axial and radial forces through the static loading adapter 6.
As shown in fig. 1, as an implementation manner, the load loading assembly of the elastic wheel loading test stand of the railway vehicle in this embodiment may be a hydraulic loading system, which includes two loading actuating hydraulic cylinders 9 connected to a hydraulic oil source 1, wherein the hydraulic oil source 1 is connected to the loading actuating hydraulic cylinders 9 through an oil pump, a servo valve and a pipeline, one of the loading actuating hydraulic cylinders applies an axial force to the tested wheel, and the other loading actuating hydraulic cylinder applies a radial force to the tested wheel.
As a preferred embodiment, as shown in fig. 2, the elastic wheel loading test stand for a railway vehicle further comprises a dust collection assembly 16 and a measurement and control system 19.
As shown in fig. 2, the dust collection assembly 16 includes a dust collection port, a hose connected to the dust collection port, and an industrial dust collector connected to the end of the hose for providing dust collection power, wherein the dust collection port is disposed below the driving wheel 17 and the wheel under test 18, so that the dust collector can conveniently suck away dust generated during the fatigue loading test of the driving wheel 17 and the wheel under test 18, and the like, thereby protecting the environment of the test site.
The measurement and control system 19 is mainly used for setting the loading working condition of the test bed, controlling the load output of the load loading assembly, collecting various performance indexes of wheels, and carrying out relevant recording and outputting.
The fatigue loading test working condition of the elastic wheel loading test bed of the railway vehicle is shown in fig. 1, the tested wheel 18 is arranged on the dynamic loading wheel axle 10, and the positions of the bidirectional sliding table 7 and the driving platform 15 are adjusted, so that the tested wheel 18 is tightly attached to the driving wheel 17; meanwhile, a loading actuating hydraulic cylinder 9 is arranged at a proper position and is connected with the bidirectional sliding table 7. Sensors are arranged around the periphery of the wheel 18 to be tested to collect deformation conditions of the wheel 18 to be tested in loading engineering. After the arrangement is finished, the system is started for testing, the driving motor 14 moves according to the set rotating speed of the measurement and control system 19, the driving shaft 12 and the driving wheel 17 are driven to rotate through the transmission mechanism 13, the tested wheel 18 rotates along with the driving wheel 17, the movement of the elastic wheel on the track is simulated, the loading actuating hydraulic cylinder 9 moves according to the set waveform of the measurement and control system, the axial and radial loading can be carried out simultaneously, the loading can be carried out in any single direction, in the loading process, the shaft brake 8 can frequently simulate braking, and the braking force and the braking time can be set on the measurement and control system 19.
The static loading test working condition is as shown in fig. 3, the tested wheel 18 is arranged on the static loading wheel shaft 4, and the positions of the static loading adapter 6 and the loading sensor 9 are adjusted so that the static loading adapter 6 is tightly attached to the tested wheel 18. Sensors are arranged around the periphery of the wheel 18 to be tested to collect deformation conditions of the wheel 18 to be tested in loading engineering. After the arrangement is finished, the system is started for testing, and the loading actuating hydraulic cylinder 9 is loaded according to the set load spectrum of the measurement and control system, and can be loaded axially and radially at the same time, or in any single direction.
In summary, the rail vehicle elastic wheel loading test bed of the embodiment has comprehensive functions and strong universality, can comprehensively simulate and examine various performance indexes of the elastic wheel, provides data support for processing generation, performance improvement and the like of the elastic wheel, effectively utilizes equipment and space, and reduces product cost and use cost.
The elastic wheel loading test bed is not limited to an elastic wheel test, can make various changes and expansion on the premise of not deviating from the spirit of the invention, can be applied to various mechanical structure tests with the same static force and fatigue test requirements, can play the same role, and is not described in detail in the invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a rail vehicle elastic wheel loading test bench which characterized in that: the device comprises a base, a fatigue loading assembly, a static loading assembly, a load loading assembly and a bidirectional sliding table arranged on the base;
the load loading assembly can apply axial and radial force to the tested wheel, the fatigue loading assembly and the static loading assembly are arranged on the base, the fatigue loading assembly comprises a driving assembly for driving the tested wheel to move and a braking assembly for simulating acceleration, deceleration and braking of the tested wheel, and the fatigue loading assembly is matched with the load loading assembly to simulate the working condition of the tested wheel in the moving process;
the static loading assembly can fix the tested wheel and simulate the working condition of the tested wheel in a static state by matching with the load loading assembly;
the lower end of the bidirectional sliding table is fixedly provided with a movable loading wheel shaft through a second bearing group, the braking component is a shaft brake, the upper end of the movable loading wheel shaft is connected with the shaft brake, and the lower end of the movable loading wheel shaft is used for connecting the tested wheels;
the load loading assembly can apply acting force consistent with the axial direction and the radial direction of the tested wheel to the bidirectional sliding table, and the bidirectional sliding table drives the tested wheel to squeeze the driving wheel, so that the acting force of the axial direction and the radial direction of the tested wheel is simulated.
2. The rail vehicle spring wheel loading test stand of claim 1, wherein: the driving assembly comprises a motor, a driving shaft driven by the motor, and a driving wheel connected with and driven by the driving shaft, wherein the driving wheel is contacted with and drives the tested wheel to move.
3. The rail vehicle spring wheel loading test stand of claim 2, wherein: the device also comprises a driving platform arranged on the base, the motor drives the driving shaft through a transmission mechanism, the driving shaft is supported and fixed through a first bearing group,
the motor, the driving wheel, the driving shaft, the transmission mechanism and the first bearing group are all fixed on the driving platform.
4. The rail vehicle spring wheel loading test stand of claim 1, wherein: the movable loading wheel shaft comprises an upper section and a lower section which are connected through flanges, wherein the lower section of the movable loading wheel shaft is detachably connected with the tested wheel.
5. The rail vehicle spring wheel loading test stand of claim 1, wherein: the static loading assembly comprises a shaft supporting seat, a static loading wheel shaft, a shaft locker and a static loading adapter;
the static loading wheel shaft is fixed on the base through a shaft supporting seat, and the tested wheel is arranged on the static loading wheel shaft;
the shaft locker is used for locking and fixing the tested wheel;
the static loading adapter is connected to the outer edge of the tested wheel and can be connected with the load loading assembly, and the load loading assembly applies axial and radial force to the tested wheel through the static loading adapter.
6. The rail vehicle spring wheel loading test stand of any one of claims 1-5, wherein: the load loading assembly comprises two loading actuating hydraulic cylinders, wherein one loading actuating hydraulic cylinder applies axial force to the tested wheel, and the other loading actuating hydraulic cylinder applies radial force to the tested wheel.
7. The rail vehicle spring wheel loading test stand of claim 2, wherein: the driving wheel is of a two-layer structure connected through threads, the outer layer of the driving wheel is used for being in contact with the tested wheel, and the contact surface of the outer layer of the driving wheel and the tested wheel is of a track structure;
the inner layer of the driving wheel is fixedly connected with the driving shaft.
8. A rail vehicle spring wheel loading test stand according to any one of claims 2 or 3, wherein: the system also comprises a measurement and control system and a dust collection assembly, wherein the measurement and control system is used for controlling the actions of the fatigue loading assembly and the load loading assembly, collecting performance indexes of the tested wheels, carrying out relevant records and outputting;
the dust collection opening of the dust collection assembly is arranged below the contact position of the driving wheel and the tested wheel.
9. The rail vehicle spring wheel loading test stand of claim 1, wherein: and cooling systems are respectively arranged corresponding to the first bearing group, the second bearing group and the shaft brake.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611252554.6A CN106769120B (en) | 2016-12-30 | 2016-12-30 | Railway vehicle elastic wheel loading test bed |
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| CN201611252554.6A CN106769120B (en) | 2016-12-30 | 2016-12-30 | Railway vehicle elastic wheel loading test bed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109855889A (en) * | 2017-11-30 | 2019-06-07 | 常州中车铁马科技实业有限公司 | Multi-state tread braking unit fatigue test system |
| CN108760348B (en) * | 2018-07-06 | 2023-12-19 | 湖北环一电磁装备工程技术有限公司 | Heavy load wheel test bed |
| CN109520752A (en) * | 2018-12-28 | 2019-03-26 | 徐工集团工程机械有限公司 | Test the reliability test system of wheel |
| CN111829905A (en) * | 2019-04-22 | 2020-10-27 | 浙江德盛铁路器材股份有限公司 | Wheel rail tester |
| CN111537249B (en) * | 2020-06-09 | 2022-09-27 | 株洲时代新材料科技股份有限公司 | Elastic wheel fatigue test method and test device |
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