CN107121275B - Rail fastening integration test experimental facilities - Google Patents
Rail fastening integration test experimental facilities Download PDFInfo
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- CN107121275B CN107121275B CN201710443807.6A CN201710443807A CN107121275B CN 107121275 B CN107121275 B CN 107121275B CN 201710443807 A CN201710443807 A CN 201710443807A CN 107121275 B CN107121275 B CN 107121275B
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- rail
- actuator
- sleeper
- longitudinal
- cushion cap
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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
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of rail fastening integration test experimental facilities, it is related to technical field of rail traffic, including supporting table, sleeper cushion cap, loading device and control system, sleeper cushion cap bottom adjusts the anglec of rotation of sleeper cushion cap by angle adjusting mechanism, sleeper is placed above sleeper cushion cap and rail, sleeper are connected with rail by fastener；Loading device includes vertical actuator and longitudinal actuator, vertical actuator is located above sleeper cushion cap, longitudinal actuator is located at rail longitudinal direction side, longitudinal direction and vertical loading are carried out to rail by vertical actuator and longitudinal actuator, vertical actuator and longitudinal actuator end are equipped with measurement termination, and actuator termination can be dismounted according to different measure the items, be changed；Angle adjusting mechanism, vertical actuator, longitudinal actuator and measurement termination are connected with control system.Apply the vertical static and dynamic loadings of different size or frequency, vertical force of the adjustment effect on rail and cross force ratio to rail using the present invention.
Description
Technical field
The present invention relates to technical field of rail traffic, more particularly to a kind of rail fastening integration test experimental facilities.
Background technology
Fastener is an important component of track structure, its act on be to maintain rail and sleeper it is reliable be coupled and
Rail Lateral Displacement is prevented, the comfortableness taken to train security and passenger has important influence.When acting on rail
Load form difference when, the stress of corresponding fastener（Such as bolt axial force, spring stress, fastener longitudinal resistance）Also can send out
Changing, and this is to investigate the important indicator that fastener is coupled reliability.
Load or frequency difference, the Load Combination form acted on rail is different（Vertical force, cross force）, make-up
The stress of part can have a significant impact.In order to simulate the true stressing conditions of rail, so as to study these factor contacting piece mechanics
Performance impact is, it is necessary to apply the load of different size or frequency to rail, and set different Load Combinations, so as to obtain a system
Row bolt axial force, spring stress and fastener resistance.Change between fastener longitudinal resistance, bolt axial force, spring stress there is also
Certain relevance, after obtaining above-mentioned measurement data, this relevance can also reflect.These factors are to investigating fastener connection
Whether knot is safe and reliable most important, and therefore, a kind of comprehensive fastener system test equipment contacting piece of urgent need carries out experiment and ground
Study carefully.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of rail fastening integration test experimental facilities, can be to rail
Apply the vertical static and dynamic loadings of different size or frequency, vertical force of the adjustment effect on rail and cross force ratio.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of rail fastening integration test experimental facilities, including supporting table, sleeper cushion cap, loading device and control system,
Angle adjusting mechanism is provided between the sleeper cushion cap and supporting table, sleeper and rail can be placed above the sleeper cushion cap,
The sleeper is connected with rail by fastener, and the loading device includes vertical actuator and longitudinal actuator, the vertical work
Dynamic device is arranged on above sleeper cushion cap, and longitudinal actuator is arranged on rail longitudinal direction side, passes through vertical actuator and longitudinal direction
Actuator carries out longitudinal direction and vertical loading to rail, the vertical actuator and longitudinal actuator end by measure termination with
Rail contacts, and actuator termination can carry out dismounting manually according to different measure the items, change；The angle adjusting mechanism,
Vertical actuator, longitudinal actuator and measurement termination are connected with control system.
Preferably, the angle adjusting mechanism includes rotating shaft, motor, leading screw and support column, the sleeper cushion cap bottom one
End is connected by rotating shaft with supporting table, and the sleeper cushion cap bottom other end is provided with guiding surface, and the support column, which is arranged on, leads
To between inclined-plane and supporting table, the support column is arranged on leading screw end, and the motor output shaft drives silk by gear drive
Thick stick does stretching motion.
Further, the motor is stepper motor.
Preferably, dial is provided with outside the rotating shaft, the dial is arranged in supporting table, the rotating shaft and pointer
It is connected.
Further, longitudinal actuator is arranged on rail longitudinal direction one end, and the rail other end is provided with displacement sensing
Device, institute's displacement sensors are connected with control system.
Preferably, the control system includes computer and switch board, and the measurement termination is connected with computer, the electricity
Machine is connected by motor control wire with computer and switch board, and the vertical actuator and longitudinal actuator are led by actuator
Line is connected with computer and switch board.
Further, pressure display unit is additionally provided with the switch board, the pressure display unit is connected with computer.
Preferably, the vertical actuator and longitudinal actuator are electro-hydraulic loading mechanism, including hydraulic cylinder, are made
Dynamic cylinder, electrohydraulic servo valve and sensor, the piston rod end of the hydraulic cylinder are connected with pressurized strut, and the pressurized strut end is provided with
Termination is measured, the hydraulic cylinder, electrohydraulic servo valve and sensor are connected with control system.
Preferably, the support column upper and lower sides are equipped with T-shaped guide rail, the supporting table contacted with support column and sleeper cushion cap end
Face is provided with the T-slot coordinated with T-shaped guide rail.By the cooperation of T-shaped guide rail and T-slot, it is vertical can to prevent that sleeper cushion cap from occurring
To with laterally topple.
Preferably, the vertical actuator is arranged on top plate, and the top plate is arranged on sleeper cushion cap by four pillars
Top, longitudinal actuator are arranged on sleeper cushion cap side, in the pressurized strut center line and rail of longitudinal actuator
Mandrel line is in the same plane.
It is using beneficial effect caused by above-mentioned technical proposal：The rotation of sleeper cushion cap is adjusted by angle adjusting mechanism
Gyration, rail is carried out by vertical actuator and longitudinal actuator vertically to load with longitudinal direction, using measuring termination by data
Transmit to control system.The present invention applies the vertical static and dynamic loadings of different size or frequency, regulation using control system to rail
The vertical force acted on rail and cross force ratio, and then measure fastener longitudinal resistance, rail level friction using external instrument
Coefficient, bolt axial force etc., the buckle press and fastener embedded parts withdrawal resistance of fastener can also be measured.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of structural representation of rail fastening integration test experimental facilities provided in an embodiment of the present invention；
Fig. 2 is supporting table and sleeper cushion cap cooperation schematic diagram in Fig. 1；
In figure：The vertical actuator of 1-, 2- actuator wires, 3- longitudinal directions actuator, 4- displacement transducers, 5- pressure are shown
Device, 6- motors, 7- leading screws, 8- sleeper cushion caps, 9- rotating shafts, 10- dials, 11- motor control wires, 12- computers, 13- are surveyed
Measure termination, 14- support columns, 15-T type guide rails, 16- sleepers, 17- rail, 18- fasteners, 19- supporting tables, 20- switch boards, 21- branch
Post, 22- top plates, 23- guiding surfaces.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
A kind of rail fastening integration test experimental facilities passed through referring to Fig. 1,2, the present invention, including supporting table 19, sleeper
Cushion cap 8, loading device and control system, angle adjusting mechanism, the sleeper are provided between the sleeper cushion cap 8 and supporting table 19
The top of cushion cap 8 can place sleeper 16 and rail 17, and the sleeper 16 and rail 17 are connected by fastener 18, the loading device
Including vertical actuator 1 and longitudinal actuator 3, the vertical actuator 1 is arranged on the top of sleeper cushion cap 8, longitudinal start
Device 3 is arranged on 17 longitudinal side of rail, and longitudinal direction is carried out to rail 17 by vertical actuator 1 and longitudinal actuator 3 and is vertically added
Carry, the vertical actuator 1 and the end of longitudinal actuator 3 are contacted by measuring termination 13 with rail 17, and measurement termination 13 can
According to different measure the items dismount manually, change；The anglec of rotation of sleeper cushion cap 8 is adjusted by angle adjusting mechanism
Degree；The angle adjusting mechanism, vertical actuator 1, longitudinal actuator 3 and measurement termination 13 are connected with control system.
The present invention drives vertical actuator and longitudinal actuator to apply different size or frequency to rail by control system
Vertical quiet, dynamic load, wherein static load can be pulling force, pressure, and the measurement termination of vertical actuator and longitudinal actuator end can
With dismounting, replacing manually as needed, corresponding measurement termination has three kinds, and respectively pulling force termination, pressure termination and rail level rubs
Measurement termination is wiped, wherein rail level rub measurement termination is provided with circle and taken turns, and circle wheel center is placed with torque sensor, the torque sensor
It is connected with the computer of control system, torque information can be fed back to computer；Wherein, it is placed on the longitudinal direction of rail longitudinal direction one end
Actuator, longitudinal force is applied to rail foot surface, for measuring fastener resistance and rail level resistance, when there is displacement in rail, circle wheel
Rotate, the ratio of torque value and circle wheel radius now is rail level friction force value.It is 0 by control system controlled loading scope
~200kN.
As a kind of preferred structure, the angle adjusting mechanism includes rotating shaft 9, motor 6, leading screw 7 and support column 14, described
The bottom end of sleeper cushion cap 8 is connected by rotating shaft 9 with supporting table 19, and the bottom other end of sleeper cushion cap 8 is provided with guiding surface
23, the support column 14 is set between guiding surface 23 and supporting table 19, and the support column 14 is arranged on the end of leading screw 7, described
The output shaft of motor 6 drives leading screw 7 to do stretching motion by gear drive.Leading screw engages with motor output shaft gear, passes through electricity
The rotation of machine output shaft drives leading screw to move forward and backward, and when leading screw moves forward, drives sleeper cushion cap angle to increase, when leading screw to
After when moving, sleeper cushion cap angle diminishes.
Wherein, the motor 6 is preferably stepper motor.Stepper motor is fixed on the support of lower section by four bolts
On platform, leading screw translating device is formed with leading screw, leading screw can be driven to move forward and backward.The computer of control system is driven by stepper motor
Dynamic device control stepper motor, computer send pulse signal and tuning signal to stepper motor driver, so as to control stepping electric
Turned position, rotating speed and the steering of machine, realize the angle control to sleeper cushion cap.
In one particular embodiment of the present invention, the outside of rotating shaft 9 is provided with dial 10, and the dial 10 is set
In supporting table 19, the rotating shaft 9 is connected with pointer.Be carved with angle value on dial, pointer with the rotating shaft of sleeper cushion cap together
Rotation, pointer instruction numerical value is sleeper rotation angle value, and such dial can do a review to actual rotation angle.Pass through
It is 0~45 ° that control system, which controls angle of regulation range, and angular adjustment precision is ± 0.02 °.
As further preferred scheme, longitudinal actuator 3 is arranged on 17 longitudinal one end of rail, and the rail 17 is another
One end is provided with displacement transducer 4, and institute's displacement sensors 4 are connected with control system.Rail is applied by longitudinal actuator vertical
Xiang Li, the length travel of rail is detected by displacement transducer.
In a preferred embodiment of the invention, the control system includes computer 12 and switch board 20, the survey
Amount termination 13 is connected with computer 12, and the motor 6 is connected by motor control wire 11 with computer 12 and switch board 20, institute
Vertical actuator 1 and longitudinal actuator 3 is stated by actuator wire 2 with reductor 12 and switch board 20 to be connected.
In addition, being additionally provided with pressure display unit 5 on the switch board 20, the pressure display unit 5 is connected with computer 12.Pressure
Power display can be connected with vertical actuator and longitudinal actuator, and the vertical and longitudinal direction applied to display directly perceived to rail is pressed
Force value.
Wherein, the vertical actuator 1 and longitudinal actuator 3 select electro-hydraulic loading mechanism.The electro-hydraulic servo adds
Mounted mechanism can realize the fine setting of load, and when loaded value is close to desirable value, the computer of control system can be sent out to electrohydraulic servo valve
Go out instruction, loading velocity slows down, it is achieved thereby that fine setting.
Electro-hydraulic loading mechanism is controlled by control system, including hydraulic cylinder, pressurized strut, electrohydraulic servo valve and sensing
Device, the piston rod end of the hydraulic cylinder are connected with pressurized strut, and the pressurized strut end, which is provided with, measures termination, the hydraulic cylinder,
Electrohydraulic servo valve and sensor are connected with control system.Computer control system sends loading instruction to electrohydraulic servo valve, and
Constantly receive reponse system feedack；The signal that electrohydraulic servo valve is sent according to computer, by relevant pressure and flow
Oil be transferred to the piston rod of hydraulic cylinder, pass through pressurized strut power output；Sensor is used to sense force value and displacement information, and passes through
Reponse system is by these feedback of the information to computer.Wherein, vertical actuator, longitudinal actuator control by a computer,
Control software is installed on computer, required parameter value can be inputted, such as vertically with longitudinal load, loading velocity, loading frequency
Deng.
Further optimize above-mentioned technical proposal, the upper and lower sides of support column 14 are equipped with T-shaped guide rail 15, connect with support column 14
Tactile supporting table 19 and the end face of sleeper cushion cap 8 are provided with the T-slot coordinated with T-shaped guide rail 15.The end of leading screw passes through support column
The rotation of sleeper cushion cap is driven, two T-rails are protruded in support column top and bottom respectively, T-rail above and sleeper cushion cap bottom surface
T-slot track slided on T-slot track with merging, following T-rail and the T-slot track in supporting table are with merging edge
The slip of T-slot track.The design of T-shaped structure causes sleeper cushion cap, leading screw end and the end supported underneath platform to form one
The structure of monolithic stability, it can prevent that sleeper cushion cap is positive and laterally topples.
Wherein, the vertical actuator 1 is arranged on top plate 22, and the top plate 22 is arranged on sleeper by four pillars 21
The top of cushion cap 8, longitudinal actuator 3 are arranged on the side of sleeper cushion cap 8, the pressurized strut center line and steel of longitudinal actuator
The central axis of rail is in the same plane.
In summary, the present invention possesses following functions：
1. applying the vertical static and dynamic loadings of different size or frequency to rail, realized and automatically controlled by computer.
2., can be with vertical force of the adjustment effect on rail and cross force ratio under certain vertical load（Y/Q）, and
Realized and automatically controlled by computer.
3. in the case where above-mentioned function is realized, measured using external instrument（Have and make with no-load in the case of load action
In the case of）Fastener longitudinal resistance, rail level coefficient of friction, bolt axial force, spring stress.
4. the present invention can also measure the buckle press and fastener embedded parts withdrawal resistance of fastener.
The operation principle and operating procedure of the present invention is as follows：
Different size of load is applied to rail using the vertical actuator and longitudinal actuator of electro-hydraulic loading mechanism,
By changing sleeper cushion cap angle value, so as to change the vertical force being applied on rail and cross force ratio（Y/Q）.So grind
Different Y/Q values are studied carefully with different size load to rail fastening stress state, fastener longitudinal resistance, rail level coefficient of friction and bolt
The influence of axle power.
Specific works step is as follows：
（1）Rail system is laid first, sleeper is placed on sleeper cushion cap, and steel is put in specific position on sleeper
Rail, it is ensured that rail axis is located at immediately below thrust bearing, then in rail both sides fastener for installing, according to required buckle press
Fastener is set to be coupled sleeper with rail.
（2）Software in computer is opened, input angle angle value and angular adjustment speed, are then clicked in angular adjustment module
" beginning/pause " button starts stepper motor, and stepper motor drives leading screw to move forward, and leading screw front support post drives sleeper to hold
Platform rotates.When sleeper cushion cap anglec of rotation angle setpoint close in computer, the rotation of sleeper cushion cap initially enters fine setting rank
Section, until during angle of arrival setting value, sleeper cushion cap stops the rotation.
（3）Into load-on module, loading mode is selected（Static load pattern or dynamic load pattern）, input load information, Ran Houdian
Hit " beginning/pause " button and start actuator, start to load to rail until terminating.
（4）Measured using above-mentioned measuring system, and recorded data.
（5）Change pressure value, continue to measure.
（6）Change sleeper cushion cap angle value, then repeat the above steps.
（7）It is measured.
Integration test is carried out for rail fastening using the present invention, measurement content includes rail level friction coefficient measurement, fastener
Drag measurement, bolt axial force measurement, the measurement of fastener stress state, buckle press measurement and the measurement of fastener embedded parts withdrawal resistance.Specifically
Measuring method is as follows：
Rail level friction coefficient measuring apparatus：Rail level rub measurement termination is selected into vertical actuator measurement termination.The measurement
The torque sensor at termination center is connected with computer, and torque information can be fed back to computer, and longitudinal actuator is applied to rail
Add longitudinal force, when displacement occurs in rail, circle wheel rotates, and the ratio of torque value and circle wheel radius now is rail level frictional force
Value.Rail level friction force value divided by vertical the actuator size that is further applied load are rail level coefficient of friction.
Fastener resistance measurement apparatus：Fastener resistance test is according to specification under no-load operative condition《High-speed railway fastener system
System test method part 1：The measure of rail longitudinal resistance》Measure.Fastener resistance is tested in the case of having load action
Process is as follows：According to formula：Fastener resistance=rail is by drag overall value-rail level Resistance Value, because rail level Resistance Value is by above-mentioned rail
Measured during the friction coefficient measurement of face.Therefore only need to measure drag overall value again.According to fastener resistance specifications of surveys,
Displacement transducer is fixed on sleeper, and sensor is connected with rail, longitudinal actuator to rail apply pulling force until
Sliding occurs in rail or value of thrust is beyond 4 times of fastener performance, the relative displacement between displacement sensor rail and sleeper, position
Relative displacement and value of thrust are fed back to computer by pulling force sensor in displacement sensor and longitudinal actuator, meeting in computer
Drag overall value, and meeting automatic running above-mentioned formula are automatically analyzed out, and then calculates rail when by multi-form load action
Fastener resistance.
Bolt axial force measures：Referring to Fig. 1, usual rail 17 is to be fixed on by fastener 18 on sleeper, and fastener 18 is by spiral shell
Railway spike, spring, track gauge block, gauge apron, railway rail pad, plain washer, collets composition are revolved, is used when carrying out bolt axial force measurement
The bolt axial force measuring instrument arrived is bolt axial force tester, and this instrument utilizes ultrasonic wave principle, by measuring screw spike
Strain and then calculate bolt axial force；The stress state of fastener is mainly the stress distribution of spring, and this test content is by one
Three-dimensional optical strain measurement system measures, and can reflect spring strain, the distribution of stress on computers.
Withhold force measuring device：According to specification《High-speed railway fastener system test method part 2：Assemble buckle press
Measure》Measure.When buckle press measures, displacement sensor rail vertical displacement is placed in four corner points of rail,
Then pulling force is applied to rail until railway rail pad can just be extracted out with vertical actuator, after extracting railway rail pad out, be offloaded to
Untill when vertical displacement average is zero, value of thrust P now is recorded, continues to be offloaded to 0.9P, then increase value of thrust to 1.1P,
Value of thrust P when displacement average is zero0Force value is as withheld, computer can calculate this value automatically.
Fastener embedded parts resistance to plucking force measuring device：According to specification《The part of high-speed railway fastener system test method the 7th：In advance
Embedded part pull-out bond test》Measure.Fastener embedded parts of the pre-plugged in concrete are applied using vertical actuator and hung down
To load, by after load holding capacity during experiment and experiment between built-in fitting and concrete the state of joint determine it is pre-buried
The withdrawal resistance of part.This process needs to utilize actuator and load transducer equipment.
The present invention is applied widely, by changing different sleeper cushion caps, is tested suitable for the fastener of disposable type.
Many details are elaborated in superincumbent description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by particular embodiments disclosed above.
Claims (8)
- A kind of 1. rail fastening integration test experimental facilities, it is characterised in that：Including supporting table, sleeper cushion cap, loading device and Control system, angle adjusting mechanism is provided between the sleeper cushion cap and supporting table, rail can be placed above the sleeper cushion cap Pillow and rail, the sleeper are connected with rail by fastener, and the loading device includes vertical actuator and longitudinal actuator, institute State vertical actuator to be arranged on above sleeper cushion cap, longitudinal actuator is arranged on rail longitudinal direction side, passes through vertical start Device and longitudinal actuator carry out longitudinal direction and vertical loading to rail, and the vertical actuator and longitudinal actuator end pass through survey Amount termination contacts with rail；The angle adjusting mechanism, vertical actuator, longitudinal actuator and measurement termination are and control system It is connected；The angle adjusting mechanism includes rotating shaft, motor, leading screw and support column, the sleeper cushion cap bottom end by rotating shaft with Supporting table connects, and the sleeper cushion cap bottom other end is provided with guiding surface, and the support column is arranged on guiding surface and support Between platform, the support column is arranged on leading screw end, and the motor output shaft drives leading screw to do stretching motion by gear drive；The support column upper and lower sides are equipped with T-shaped guide rail, the supporting table that is contacted with support column and sleeper cushion cap end face is provided with and T The T-slot that type guide rail coordinates；Integration test is carried out for rail fastening using above-mentioned rail fastening integration test experimental facilities, measurement content includes rail level Friction coefficient measurement, fastener resistance measurement, bolt axial force measurement, the measurement of fastener stress state, buckle press measurement and fastener are pre-buried Part withdrawal resistance measures.
- 2. rail fastening integration test experimental facilities according to claim 1, it is characterised in that：The motor is stepping electricity Machine.
- 3. rail fastening integration test experimental facilities according to claim 1, it is characterised in that：It is provided with outside the rotating shaft Dial, the dial are arranged in supporting table, and the rotating shaft is connected with pointer.
- 4. rail fastening integration test experimental facilities according to claim 1, it is characterised in that：Longitudinal actuator is set Put in rail longitudinal direction one end, the rail other end is provided with displacement transducer, and institute's displacement sensors are connected with control system.
- 5. rail fastening integration test experimental facilities according to claim 4, it is characterised in that：The control system includes Computer and switch board, the measurement termination are connected with computer, and the motor passes through motor control wire and computer and control Cabinet processed is connected, and the vertical actuator and longitudinal actuator are connected by actuator wire with computer and switch board.
- 6. rail fastening integration test experimental facilities according to claim 5, it is characterised in that：Also set on the switch board There is pressure display unit, the pressure display unit is connected with computer.
- 7. the rail fastening integration test experimental facilities according to claim any one of 1-6, it is characterised in that：It is described vertical Actuator and longitudinal actuator are electro-hydraulic loading mechanism, including hydraulic cylinder, pressurized strut, electrohydraulic servo valve and sensing Device, the piston rod end of the hydraulic cylinder are connected with pressurized strut, and the pressurized strut end, which is provided with, measures termination, the hydraulic cylinder, Electrohydraulic servo valve and sensor are connected with control system.
- 8. rail fastening integration test experimental facilities according to claim 7, it is characterised in that：The vertical actuator is set Put on top plate, the top plate is arranged on above sleeper cushion cap by four pillars, and longitudinal actuator is arranged on sleeper and held Platform side, the pressurized strut center line of longitudinal actuator and the central axis of rail are in the same plane.
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| CN201710443807.6A CN107121275B (en) | 2017-06-13 | 2017-06-13 | Rail fastening integration test experimental facilities |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884171B (en) * | 2017-11-21 | 2019-09-24 | 北华大学 | Rail fastening reliability test |
| CN108444685B (en) * | 2018-03-15 | 2023-11-28 | 中南大学 | High-speed railway wheel rail vertical and horizontal force coupling loading simulation device |
| CN108458863B (en) * | 2018-03-22 | 2023-12-22 | 中南大学 | Rail longitudinal reciprocating loading simulation experiment device |
| CN109269789B (en) * | 2018-10-30 | 2020-08-04 | 中南大学 | Fastener and sleeper integrated experimental loading device |
| CN109520644A (en) * | 2018-11-13 | 2019-03-26 | 西南交通大学 | Elastic-strip pressure detection method and elastic-strip pressure detection device |
| CN109990967B (en) * | 2019-04-30 | 2024-04-30 | 上海材料研究所有限公司 | Dynamic and fatigue performance detection device and method for steel rail assembly fastener system |
| CN110243578B (en) * | 2019-05-23 | 2021-05-04 | 苏州集成校准检测认证有限公司 | Method for testing longitudinal steel rail restraining force of rail transit |
| CN113562008B (en) * | 2021-08-31 | 2022-05-17 | 中铁第四勘察设计院集团有限公司 | Steel rail fastener bolt stress detection robot |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS57147029A (en) * | 1981-03-06 | 1982-09-10 | Japanese National Railways<Jnr> | Testing equipment for truck for vehicle |
| CN202153213U (en) * | 2011-07-27 | 2012-02-29 | 杨雅屹 | Automatic detection machine for fasteners |
| CN102980785B (en) * | 2012-12-17 | 2015-10-14 | 中国地质大学（武汉） | A kind of landslide physical model test manual lifting type deadweight charger |
| CN103452019B (en) * | 2013-09-24 | 2015-10-28 | 西南交通大学 | The testing arrangement of steel rail fastener longitudinal resistance and method |
| CN204405279U (en) * | 2015-02-05 | 2015-06-17 | 中南大学 | Rail fastener vertical rigidity comprehensive measurement device |
| CN106644425B (en) * | 2016-10-27 | 2019-12-20 | 中南大学 | Comprehensive measuring device for longitudinal, transverse and vertical three-way resistance of steel rail fastener |
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