CN108956353A - Railway ballast particle high frequency micro-moving frictional wear experiment test device - Google Patents
Railway ballast particle high frequency micro-moving frictional wear experiment test device Download PDFInfo
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- CN108956353A CN108956353A CN201810736174.2A CN201810736174A CN108956353A CN 108956353 A CN108956353 A CN 108956353A CN 201810736174 A CN201810736174 A CN 201810736174A CN 108956353 A CN108956353 A CN 108956353A
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- 239000002245 particle Substances 0.000 title claims abstract description 49
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000002474 experimental method Methods 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 238000013480 data collection Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000013519 translation Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000006061 abrasive grain Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
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- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010034719 Personality change Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004452 microanalysis Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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Abstract
The present invention relates to fine motion frictional dissipation experimental technique fields.The invention discloses a kind of railway ballast particle high frequency micro-moving frictional wear experiment test devices, including fine motion power device, plane sample holding device, temperature control device, constant flow rate water-bath circulator, spherical sample holding device and data collection system；The fine motion power device is connect with plane sample holding device, for providing the effect of simulation train load, the plane sample of the plane sample holding device clamping, the spherical sample contacts with the spherical sample holding device clamping；The temperature control device is mounted on inside plane sample holding device, for setting test temperature；The constant flow rate water-bath circulator is installed on the plane sample holding device, for providing the water-bath effect of the simulation constant flow rate that railway ballast sample is subject to；The data collection system, for acquiring railway ballast sample stress and displacement.The present invention can real simulation train to the dynamic loading of railway ballast particle.
Description
Technical field
The present invention relates to fine motion frictional dissipation experimental technique fields, in particular under water flow-temperature-load coupling
Railway ballast particle high frequency micro-moving frictional wear experiment test device.
Background technique
Fine motion is the relative motion of the minimum amplitude of two contact surfaces, can cause contact surface fretting wear and fatigue crack
Generation and expansion.
Nineteen twenty-four Gillet has found the phenomenon that causing machine fastener fatigue life to be substantially reduced because of fine motion for the first time, but by
In the limitation of testing equipment at that time and measuring technology, micro-moving frictional wear progress is relatively slow.Until 1970s
After, with the development of micro-analysis measuring technology, fine motion tribology is also grown rapidly, new academic thought constantly quilt
It is introduced into fine motion tribology research, enriches and developed fine motion tribology theory, as the stripping of big displacement skimming wear is sheaf theoretic
Introducing and the proposition etc. of fine motion three-body fretting wear theory.
Railway ballast particle is usually as made of processing of stone, is to be equipped with fragment rail bed important materials.Root in engineering
According to the material property and parameter index of rubble railway ballast, it is classified as superfine railway ballast, level-one railway ballast and second level railway ballast etc..High-speed railway
In order to increase the stability of railway ballast, reduces abrasion and dusting caused by vibration, prevent railway ballast when high speed traveling from splashing, usually adopt
With superfine railway ballast.Superfine railway ballast is in reflection railway ballast material parameters (abrasion resisting, shock resistance, resistance to crusing, infiltration, weathering resistance, anti-atmosphere
Corrosion etc. material indexs) and reflection railway ballast working performance mass parameter (railway ballast partial size, gradation, grain shape, surface state,
Cleannes etc. process index) aspect, it is much higher than other grade railway ballasts.That is, high-speed railway railway ballast is between its particle
Wear requirements it is very strict.
In order to meet the dynamics demand of high speed traveling, to railway roadbed stability requirement pole under train dynamics load ringing
Its is harsh.Under train dynamics load action, railway ballast particles' interaction belongs to high frequency micro-moving frictional wear scope.With railway ballast
Fine motion operation development between particle, the microcosmic foliation tectonic level of railway ballast particle and distribution character change, occur between adjacent particle
Fine motion slip region.In fine motion slip region, when the peak-to-peak contact shear stress of the micro- contact of railway ballast particle surface is more than material shearing strength
When, it contacts and is produced fracture at peak, form abrasive grain between adjacent railway ballast particle contact surface；And railway ballast surface roughness and percent ripple are deposited
Surface between adjacent particle is being caused discontinuously to contact, under the High-speed Train Loads for repeating high speed, railway ballast particle surface is by week
Phase property fine motion load action, the micro- contact peak in surface generate fatigue fracture, can also form mill between adjacent railway ballast particle contact surface
Grain.
Abrasive grain sustainable development forms and excludes the abrasive grain between adjacent railway ballast particle contact surface and reaches dynamic equilibrium, railway ballast
Intergranular micro-moving frictional wear enters the stabilization sub stage.Under the action of penetrating into railway roadbed water, largely weakens railway ballast particle and connect
Microscopic contact acts between contacting surface, provides necessary condition for the generation of Ballast accumulated deformation.Temperature can influence to a certain degree simultaneously
The lubricant viscosity of moisture film is combined between railway ballast particle.Therefore, in order to improve the deformation stability during Ballast track railway roadbed is on active service,
It is necessary to carry out high frequency micro-moving frictional wear experimental study between the railway ballast particle under water flow-temperature-load coupling for pole.
At present in mechanical engineering field about the development test equipment in terms of micro-moving frictional wear, machinery field it is micro-
Dynamic friction abrasion, is primarily directed to metal material and organic matter, has for the intergranular micro-moving frictional wear of railway ballast
High frequency and the characteristics of water flow-temperature-load coupling, there is presently no correlation test test equipments.For railway construction
With this stone matter inorganic matter of railway ballast particle, correlative study is not seen also so far.Stone material is maximum for metal and organic matter
Characteristic be exactly brittleness.The brittleness of material causes railway ballast particle during micro-moving frictional wear, and surface is easy to fall abrasive grain,
And abrasive grain is under the action of water, easily forming " Fluid inclusions abrasive grain three-body lubricating effect ", (roller lubrication in bearing acts on former
Reason), cause to be also easy to produce relative displacement between railway ballast particle, is displaced between excessive particle, further ballast bed can be caused excessive
Macroscopical accumulated deformation causes damages to high speed traveling comfort and traffic safety.
Accordingly, it is considered to micro-moving frictional wear between water flow-temperature-load coupling railway ballast particle, for railway ballast
Very crucial effect is played in the holding of stability.Currently available technology is not yet about fine motion friction between railway ballast particle
The experimental rig of abrasion aspect experimental study.
Summary of the invention
The main purpose of the present invention is to provide high frequency micro-moving frictional wear experiment test devices between railway ballast particle, use
To study high frequency micro-moving frictional wear characteristic between railway ballast particle.
To achieve the goals above, the one aspect of specific embodiment according to the present invention, provides a kind of railway ballast
Particle high frequency micro-moving frictional wear experiment test device, which is characterized in that filled including fine motion power device, plane sample holder
It sets, temperature control device, constant flow rate water-bath circulator, spherical sample holding device and data collection system；The fine motion power
Device is connect with plane sample holding device, for providing the effect of simulation train load, the plane sample holding device folder
The plane sample held, the spherical sample contacts with the spherical sample holding device clamping；The temperature control device is mounted on plane
Inside sample holding device, for setting test temperature；The constant flow rate water-bath circulator is installed on the plane sample
On clamping device, for providing the water-bath effect of the simulation constant flow rate that railway ballast sample is subject to；The data collection system, is used for
Acquire railway ballast sample stress and displacement.
Further, the fine motion power device includes servomotor and speed changer, the servomotor and speed change
Device connection, the speed changer are connect with plane sample holding device.
Further, the servomotor and speed changer are controlled by computer, are provided for plane sample holding device micro-
The high frequency of meter level vertically and horizontally recycles translation and reciprocating rotation.
Further, the plane sample holding device has regulating mechanism, for the firm folder to different size sample
It holds.
Further, the constant flow rate water-bath circulator includes water circulation system and constant flow rate water bath.
Further, the temperature control device uses digital control technology, for control water in constant flow rate water bath and
Sample is kept at a set temperature.
Further, railway ballast spherical shape sample particle of the spherical sample holding device for firm clamping different-grain diameter.
Further, the data collection system is for obtaining railway ballast sample stress and position when high frequency vertically and horizontally recycles translation
It moves.
The invention has the advantages that fully considering water flow-temperature-load coupling true environment to railway ballast particle
Between micro-moving frictional wear effect, being capable of the examination that the dynamic loading form of railway ballast particle is changed over time of real simulation train
Dynamic load is tested, the data for testing collection are conducive to study railway ballast stability holding technology, are advantageously implemented railway ballast
Optimization and improvement.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partially will become apparent from the description below, or practice through the invention
It solves.
Detailed description of the invention
It constitutes part of this application attached drawing to be used to provide further understanding of the present invention, specific embodiment party of the invention
Formula, illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the horizontal sectional drawing of plane sample holding device；
Fig. 3 is the vertical cross-sectional view of plane sample holding device；
Fig. 4 is plane sample holding device chassis interior temperature control device horizontal sectional drawing；
Fig. 5 is the vertical cross-sectional view of high frequency fine motion power device；
Fig. 6 is the vertical cross-sectional view of water circulation system；
Fig. 7 is the vertical cross-sectional view of spherical sample holding device.
Wherein:
1 is plane sample contacts cushion block；
2 be plane sample holder accurate adjustment bolt；
3 be water inlet；
4 be water outlet；
5 be discrepancy conducting wire；
6 be high precision numerical control formula constant warm tube；
7 be pedestal；
8 be high frequency speed changer；
9 be high-precision servo motor；
10 pump for high-precision flow velocity water circulation；
11 be constant temperature water tank；
12 be temperature control tube；
13 be support；
14 be water filling port；
15 be plane sample；
16 be spherical sample；
17 be 6 dimension power/torque sensors；
18 be spherical sample holding device connecting rod；
19 be spherical sample holder accurate adjustment bolt；
20 be spherical sample contacts cushion block；
21 be water circulation system and constant flow rate water bath.
Specific embodiment
It should be noted that in the absence of conflict, specific embodiment, embodiment in the application and therein
Feature can be combined with each other.It lets us now refer to the figures and combines the following contents the present invention will be described in detail.
In order to make those skilled in the art better understand the present invention program, below in conjunction with specific embodiment party of the present invention
Attached drawing in formula, embodiment carries out clear, complete description to the technical solution in the specific embodiment of the invention, embodiment,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Specific embodiment, embodiment, those of ordinary skill in the art institute obtained without making creative work
There are other embodiments, embodiment, should fall within the scope of the present invention.
Railway ballast particle high frequency micro-moving frictional wear experiment test device of the invention, passes through a plane sample and one
Interaction between a the two railway ballast samples of spherical shape sample, simulates the high frequency fine motion between Ballast track railway roadbed railway ballast particle
Friction carries out the acquisition of railway ballast fretting wear data.
As shown in Figure 1, railway ballast particle high frequency micro-moving frictional wear experiment test device of the invention, including fine motion are dynamic
Power device, plane sample holding device, temperature control device, constant flow rate water-bath circulator, spherical sample holding device and data
Acquisition system.
Fine motion power device is connect with plane sample holding device, and structure includes servomotor and speed changer.Servo
Motor is connect with speed changer, and speed changer is connect with plane sample holding device.
Servomotor and speed changer can be plane sample holding device and spherical sample all by calculating carry out machine control
Clamping device provides micron-sized high frequency and vertically and horizontally recycles translation and reciprocating rotation, simulates the effect of train load.
When experimental test, plane sample holding device clamping plane railway ballast sample, by with spherical sample holder
Simulation train load is passed to spherical sample by the spherical railway ballast sample contacts of device clamping.Servo electricity under the control of the computer
The high frequency fine motion that motivation and speed changer generate passes to two railway ballast samples, and interaction therebetween will generate railway ballast sample
Fretting wear.
Temperature control device is mounted on inside plane sample holding device, using digital control technology, can accurately be controlled constant
Water and sample in flow velocity water bath, holding are tested at a set temperature.
Constant flow rate water-bath circulator is installed on plane sample holding device, for providing the simulation perseverance that railway ballast is subject to
The effect of constant current speed water-bath.
Data collection system is installed on spherical sample holding device, for acquiring the stress and position of two railway ballast samples
It moves.
Embodiment
Referring to Fig.1, Fig. 2, Fig. 3 and Fig. 5, railway ballast particle high frequency micro-moving frictional wear experimental test dress of the invention
It sets, the power that micro-moving frictional wear interacts between spherical sample peace interview sample railway ballast particle during test derives from
It is installed on the high-precision servo motor 9 and high frequency speed changer 8 of 7 lower part of plane sample platform pedestal.Before servomotor 9 combines
The high frequency speed changer 8 of installation is held, it is vertical micron-sized high frequency can be provided to plane sample holding device and spherical sample holding device
Traverse cycle translation and reciprocating rotation.
Plane sample holding device is made of pedestal 7 and water bath 21.Plane sample 15 passes through plane sample holding device
It is stable on plane sample holding device.The plane sample holding device has regulating mechanism, for different size sample
Firm clamping.
Plane sample holding device regulating mechanism is made of plane sample accurate adjustment bolt 2 and plane sample contacts cushion block 1.Road
Tiny fragments of stone, coal, etc. sample is realized micron-sized between railway ballast sample particle with plane sample holding device and spherical sample holding device fine motion
High frequency vertically and horizontally recycles translation and reciprocating rotation.
Referring to Fig. 3, Fig. 4, Fig. 6, during test, it is made of water circulation system and constant flow rate water bath 21 constant
Flow velocity water-bath circulator, it can be achieved that in water bath constant flow rate water flow.
Water flows into water circulation system and constant flow rate water bath 21 from water inlet 3, then flows out from water outlet 4.The mistake
Cheng Zhong can control bath temperature in ± 2 DEG C of error ranges of set temperature.This example constant flow rate water-bath circulator,
It is made of high-precision flow velocity water circulation pump 10 and additional digital temperature controlled water tank 11.Bath temperature is controlled in order to further accurate,
Inside plane sample holding device pedestal 7, it is equipped with high precision numerical control formula constant warm tube 6, conducting wire 5 is entered and left and is connect with computer,
The bath temperature in constant flow rate water bath is accurately controlled in ± 0.5 DEG C of error range of set temperature.Constant flow rate water
Circulator combination temperature control device is bathed, high frequency fine motion friction is ground between railway ballast particle under analog water flow-temperature-load coupling
Damage experimental test research.
Referring to Fig. 7, spherical sample 16 is stable on spherical sample holding device.The spherical shape sample holding device is by spherical shape
Sample holder accurate adjustment bolt 19 and spherical sample contacts cushion block 20 are constituted, and can consolidate the spherical sample of different-grain diameter size.Test
In the process, the time course data that the contact force between spherical sample peace interview sample and torque change over time, by being mounted on spherical examination
6 dimension power/torque sensors 17 in sample clamping device connecting rod 18 acquire.Collected contact force/torque time course data, can lead
Computer is arrived out, and high frequency micro-moving frictional wear tries between carrying out the railway ballast particle under the-temperature-load coupling of later period water flow
Test examination analysis and research.
Claims (8)
1. railway ballast particle high frequency micro-moving frictional wear experiment test device, which is characterized in that including fine motion power device, put down
Face sample holding device, temperature control device, constant flow rate water-bath circulator, spherical sample holding device and data collection system；
The fine motion power device is connect with plane sample holding device, for providing the effect of simulation train load, the plane examination
The plane sample of sample gripping apparatus grips, the spherical sample contacts with the spherical sample holding device clamping；The temperature control dress
It sets and is mounted on inside plane sample holding device, for setting test temperature；The constant flow rate water-bath circulator is installed on
On the plane sample holding device, for providing the water-bath effect of the simulation constant flow rate that railway ballast sample is subject to；The data
Acquisition system, for acquiring railway ballast sample stress and displacement.
2. railway ballast particle high frequency micro-moving frictional wear experiment test device according to claim 1, which is characterized in that
The fine motion power device includes servomotor and speed changer, and the servomotor is connect with speed changer, the speed changer
It is connect with plane sample holding device.
3. railway ballast particle high frequency micro-moving frictional wear experiment test device according to claim 2, which is characterized in that
The servomotor and speed changer are controlled by computer, are provided micron-sized high frequency for plane sample holding device and are vertically and horizontally followed
Ring translation and reciprocating rotation.
4. railway ballast particle high frequency micro-moving frictional wear experiment test device according to claim 1, which is characterized in that
The plane sample holding device has regulating mechanism, for the firm clamping to different size sample.
5. railway ballast particle high frequency micro-moving frictional wear experiment test device according to claim 1, which is characterized in that
The constant flow rate water-bath circulator includes water circulation system and constant flow rate water bath.
6. railway ballast particle high frequency micro-moving frictional wear experiment test device according to claim 1, which is characterized in that
The temperature control device uses digital control technology, is maintained at set temperature for controlling water in constant flow rate water bath and sample
Under.
7. railway ballast particle high frequency micro-moving frictional wear experiment test device according to claim 1, which is characterized in that
Railway ballast spherical shape sample particle of the spherical shape sample holding device for firm clamping different-grain diameter.
8. railway ballast particle high frequency micro-moving frictional wear experiment test device according to claim 1, which is characterized in that
The data collection system is for obtaining railway ballast sample stress and displacement when high frequency vertically and horizontally recycles translation.
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| CN201810736174.2A CN108956353A (en) | 2018-07-06 | 2018-07-06 | Railway ballast particle high frequency micro-moving frictional wear experiment test device |
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| CN201810736174.2A CN108956353A (en) | 2018-07-06 | 2018-07-06 | Railway ballast particle high frequency micro-moving frictional wear experiment test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324076A (en) * | 2022-03-10 | 2022-04-12 | 西南交通大学 | Grading rubble basic unit granule migration measuring device that permeates water |
| CN115248611A (en) * | 2022-02-14 | 2022-10-28 | 郑州航空工业管理学院 | Intelligent control method for Rtec multifunctional friction wear testing machine |
| CN115420464A (en) * | 2022-11-07 | 2022-12-02 | 西南交通大学 | Underground engineering fluid pressure simulation system, method and related equipment |
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