CN202644332U - Rail top surface irregularity detecting device - Google Patents
Rail top surface irregularity detecting device Download PDFInfo
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- CN202644332U CN202644332U CN2012202080365U CN201220208036U CN202644332U CN 202644332 U CN202644332 U CN 202644332U CN 2012202080365 U CN2012202080365 U CN 2012202080365U CN 201220208036 U CN201220208036 U CN 201220208036U CN 202644332 U CN202644332 U CN 202644332U
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- displacement measurement
- laser displacement
- checkout gear
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Abstract
The utility model discloses a rail top surface irregularity detecting device which comprises a walking trolley, a mileage speed module, a displacement measurement module and a data acquisition and display module, wherein the walking trolley is provided with a frame and a walking wheel group, the walking wheel group is arranged on two sides of the bottom of the frame and corresponds to two parallel rails, the mileage speed module is arranged on the frame and is matched with the walking wheel group, the displacement measurement module comprises three laser displacement measurers, the laser displacement measurers are fixed on the frame of the walking trolley, and the three laser displacement measurers are right opposite to the upper surface of one of the rails and are ranked on a straight line along the extension direction of one of the rails. The data acquisition and display module comprises a lower machine data acquisition unit and an upper machine storage and display unit, and a data acquisition unit is connected with the mileage speed module and the displacement measurement module. According to a unequal string measuring principle, the three laser displacement measurers are arranged at positions on the walking trolley under the condition of set intervals, the positions on the walking trolley correspond to the upper surface of one of the rails, the distance from a datum line beam to the surfaces of the steel rails is detected through measurement, short wave irregularity of the top surface of steel rails is calculated, and line mileage information is synchronously collected, so that high-precision detection of the short wave irregularity of the top surfaces of the steel rails is achieved.
Description
Technical field
The utility model relates to a kind of track detection device, especially relates to a kind of rail top face irregularity checkout gear that can carry out to the rail surface Short wave irregularity high accuracy detection.
Background technology
It is 0.02m to 5m scope inner orbit irregularity that the track Short wave irregularity refers generally to wavelength, studies show that the track Short wave irregularity is the main contributor that causes vehicle, track fatigue failure and railroad noise.Along with improving constantly of railway speed, the track Short wave irregularity causes that the destruction of track, rolling stock and railroad noise are also increasing, high-speed railway particularly, and the impact of track Short wave irregularity can not be ignored.Kinetic measurement track Short wave irregularity is difficulty relatively, and the current track inspection vehicle can only detect wavelength 1.5 above track irregularities, does not also have effective means to obtain for wavelength 1.5m with the lower railway Short wave irregularity.Although corresponding research starting early, effect is not good, and the kinetic measurement of track Short wave irregularity is still a world-famous puzzle.
Japan and France directly adopt axle box acceleration to estimate the track Short wave irregularity, but axle box acceleration is a kind of response, therefore the testing result of different detection speeds and track structure feature affects reality utilizes axle box acceleration to estimate track Short wave irregularity and unreasonable.Also set up wheel and orbital mechanics model, analyze axle box acceleration and track Short wave irregularity relation, provided track Short wave irregularity detection method, but owing to not considering the impact of bogie, car body quality and a secondary suspension device in the model, its reasonability remains further to be studied.Set up in addition vehicle and dynamics of orbits simplified model, further analyze axle box acceleration and track Short wave irregularity relation, obtain the track Short wave irregularity, but model simply still needs further research.Also having in addition the method that adopts all is to utilize stock rail kinetic model research axle box acceleration and track Short wave irregularity relation, utilize axle box acceleration indirectly to measure the track Short wave irregularity by the liftering method, all belong to the Inverse Problem Method in the vibration, ask excitation by response.
U.S. ENSCO is on track checking car, and every side longitudinally adopts three laser displacement sensors to form short string, utilizes the gauge system to realize laser displacement sensor servo tracking rail, guarantees the laser displacement sensor light spot position.But servo system structure is complicated, follows the tracks of frequency response inadequate.
Australia adopts the method for axle box acceleration integration.During train operation, the uneven axle box that makes of Rail Surface produces the high frequency vertical vibration, thereby output valve that represents Rail Surface irregularity situation of axle box acceleration meter generation, obtains after treatment the rough RMS value of rail.But owing to having ignored the rigidity of rail wheel and axle box, wheel shaft mechanical clearance is so the result is also undesirable.
Facing to the trend of railway technology high speed development now, railway security is particularly important, aspect the monitoring of track irregularity for locomotive operation safety very crucial factor especially, and the technology that can measure more accurately track irregularity is particularly urgent concerning Transportation Development now.
The utility model content
The technical problem that the utility model solves provides a kind of rail top face irregularity checkout gear, and the rail surface Short wave irregularity is realized high-precision detection.
Technical solution of the present utility model is:
A kind of rail top face irregularity checkout gear, wherein, this checkout gear comprises:
Walking dolly is provided with a vehicle frame and walking wheels, and described walking wheels are arranged at two bottom sides and corresponding two parallel track settings of described vehicle frame;
Mileage speed module is arranged on the described vehicle frame, and closes setting with described road wheel assembly;
The displacement measurement module, comprise three laser displacement measurement devices, described laser displacement measurement device is fixed on the vehicle frame of described walking dolly, and three described laser displacement measurement devices are over against described track upper surface wherein and along spread configuration on the straight line of this track bearing of trend;
Data collection and display module comprises slave computer data acquisition unit and host computer storage and display unit, and described data acquisition unit is connected with described mileage speed module and displacement measurement module.
Above-mentioned rail top face irregularity checkout gear, wherein, the in tandem that three described laser displacement measurement devices are parallel to described track bearing of trend sequentially is respectively the first laser displacement measurement device, the second laser displacement measurement device and the 3rd laser displacement measurement device, and the distance between described the first laser displacement measurement device and the second laser displacement measurement device is 0.025m, and the distance between described the second laser displacement measurement device and the 3rd laser displacement measurement device is 0.219m.
Above-mentioned rail top face irregularity checkout gear, wherein, the T-shaped body frame structure for automotive of described walking dolly for being combined by two straight beams, wherein one arrange directly over detecting the corresponding described track of beam, the bottom surface that three described laser displacement measurement devices are arranged at this detection beam is to upper surface setting that should track; Described walking wheels are provided with three rollers, and are arranged at respectively three ends of T-shaped body frame structure for automotive.
Above-mentioned rail top face irregularity checkout gear, wherein, the two piece box beam of described straight beam for being pressed into by metal sheet.
Above-mentioned rail top face irregularity checkout gear, wherein, it is the roller that nylon material is made that the described heart is walked wheels, and is provided with LM type tread.
Above-mentioned rail top face irregularity checkout gear, wherein, described vehicle frame is provided with a plurality of location steamboat, and the side of the corresponding two described tracks of described location steamboat arranges, and described location steamboat is fixed on the described vehicle frame via the adjustable locator combination.
Above-mentioned rail top face irregularity checkout gear, wherein, described mileage speed module comprise one with described road wheel assembly close the encoder of setting.
Above-mentioned rail top face irregularity checkout gear, wherein, described displacement measurement module also is provided with the transition installing plate, described transition installing plate can with described walking dolly secure bond.
Above-mentioned rail top face irregularity checkout gear, wherein, described slave computer data acquisition unit comprises single-chip microcomputer and A/D modular converter.
Above-mentioned rail top face irregularity checkout gear wherein, is connected via the 422-USB serial equipment between described slave computer data acquisition unit and the described host computer storage and display unit.
Learnt by above explanation, the utility model can reach following effect compared with prior art really:
Rail top face irregularity checkout gear of the present utility model, it mainly is a kind of detection of rail surface Short wave irregularity tapered chord method, survey principle according to tapered chord, adopt walking dolly, and the respective carter upper surface has three laser displacement measurement devices according to the condition of setting spacing on dolly, by measuring the detection reference beam to the distance of rail surface, calculates the rail surface Short wave irregularity, and synchronous acquisition circuit mileage information, realize the high accuracy of rail surface Short wave irregularity is detected.
Description of drawings
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is decomposition view of the present utility model;
Fig. 3 is schematic diagram of the present utility model.
The critical element label declaration:
The utility model:
1: walking dolly 11: detect beam 12: the walking wheels
13: mileage speed module 2: 21: the first laser displacement measurement devices of laser displacement measurement device
23: the three laser displacement measurement devices 3 of 22: the second laser displacement measurement devices: slave computer data acquisition unit
4: host computer storage and display unit 5: push rod 6: the location steamboat
7: track
The specific embodiment
A kind of rail top face irregularity checkout gear of the present utility model, wherein, this checkout gear comprises: walking dolly, mileage speed module, displacement measurement module and data collection and display module; Described walking dolly is provided with a vehicle frame and walking wheels, and described walking wheels are arranged at two bottom sides and corresponding two parallel track settings of described vehicle frame; Described mileage speed module is arranged on the described vehicle frame, and closes setting with described road wheel assembly; Described displacement measurement module comprises three laser displacement measurement devices, described laser displacement measurement device is fixed on the vehicle frame of described walking dolly, and three described laser displacement measurement devices are over against described track upper surface wherein and along spread configuration on the straight line of this track bearing of trend; Described data collection and display module comprises slave computer data acquisition unit and host computer storage and display unit, and described data acquisition unit is connected with described mileage speed module and displacement measurement module.
On the basis based on following measuring principle, can realize accurately the high-acruracy survey of rail surface Short wave irregularity by rail top face irregularity checkout gear of the present utility model:
The string survey method that adopts during the rail surface Short wave irregularity is measured adopts tapered chord measuring method (Fig. 1).Among the figure: l is total chord length; A, b be respectively short chord length and long-chord long; f
1, f
2And f
3Be respectively the detection reference beam to the distance of rail surface, process and to obtain by image processing system by checkout equipment; x
1, x
2And x
3Be respectively rail surface to the distance of track irregularity benchmark, i.e. the track irregularity amplitude.Have according to set relations:
In the formula: f is track irregularity tapered chord versed sine value.
Because just there is fixed skew in three identical track irregularities of survey mark experience.X is the irregularity of 2 experience if make, and formula (1) is carried out Fourier transform to be had:
In the formula: X (Ω), F (Ω) are respectively the Fourier transform of x and f; H (Ω) changes into the transfer function of track irregularity versed sine for track irregularity.Ω is track irregularity Space Angle frequency.
Calculate X (Ω) according to formula (2), then can calculate track spectrum and be:
In the formula, f
sBe sampling (space) frequency; N is the Fourier transform number of data points; K is spatial frequency.
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
As shown in Figure 2, be the structural representation of rail top face irregularity checkout gear of the present utility model preferred embodiment.
As shown in the figure, rail top face irregularity checkout gear of the present utility model, better, this checkout gear comprises: walking dolly 1, mileage speed module 13, displacement measurement module and data collection and display module.
Described walking dolly 1 is provided with a vehicle frame and walking wheels 12, and two bottom sides and corresponding two parallel tracks 7 that described walking wheels 12 are arranged at described vehicle frame arrange; Thereby walking dolly 1 can be advanced at general track 7, and this vehicle frame must have enough hardness and intensity, in running, can not deform, prevent that survey data is inaccurate.
Described mileage speed module 13 is arranged on the described vehicle frame, and is equipped with described walking wheels 12; In better mode, by the rolling of road wheel, the induction installation that can trigger on the mileage speed module 13 is counted the pacing amount, calculates the speed of travel and the mileage of dolly, so that track 7 end face irregularity degree are measured accurately.Better, rail top face irregularity checkout gear of the present utility model, its mileage speed module 13 includes an encoder that is equipped with described walking wheels 12.Mileage speed module 13 utilizes encoder to produce range pulse, triggers this monitoring device sampling, and calculating mileage and velocity information, is uploaded to data collection and display module, shows in real time with the rail surface Short wave irregularity information that detects and stores.
Described displacement measurement module comprises three laser displacement measurement devices 2, described laser displacement measurement device 2 is fixed on the vehicle frame of described walking dolly 1, and three described laser displacement measurement devices 2 are over against described track 7 upper surface wherein and along spread configuration on the straight line of these track 7 bearing of trends; Because the vehicle frame that dolly has enough rigidity intensity, therefore after three described laser displacement measurement devices 2 are arranged on the vehicle frame, just formed a relatively-stationary measurement assembled state, relative position each other can not change because of the walking of dolly and the irregularity of track 7, satisfies thus the requirement that detects by the tapered chord method; Simultaneously by three laser displacement measurement devices 2 distance each other is relatively fixing, and carry out the setting of distance according to needed certainty of measurement, to satisfy the requirement of obtaining of survey data.Therefore, the displacement measurement module mainly comprises 3 laser displacement measurement devices 2, distance according to design is arranged, better, laser displacement measurement device 2 is the laser camera displacement meter, and it is installed on the position corresponding with track 7 upper surfaces of walking dolly 1, by the walking of dolly, measure the detection reference beam to the distance of rail surface, provide basic data for calculating optical track end face Short wave irregularity;
Rail top face irregularity checkout gear of the present utility model, better, described displacement measurement module also is provided with the transition installing plate, described transition installing plate can with described walking dolly 1 secure bond; Strengthened the Installation Flexibility of this checkout gear, concrete, a plurality of laser displacement measurement devices 2 are installed on the described transition installing plate, and described laser displacement measurement device 2 can be via this transition installing plate in the adjustment of carrying out spacing distance between the described laser displacement measurement device 2 on the described vehicle frame.
Different according to testing goal, can select as shown in Figure 1 parameter l, a, b and f
sValue, measure the track spectrum of required wave band.Wherein, short chord length must greater than the shortest detection wavelength, for example in order to detect 0.05m to 1m track Short wave irregularity, can select l=0.25m and a=0.031m to install as carry out equipment with reference to value.Sample frequency is selected f
s=100 (1/m).Thereby in an embodiment of rail top face irregularity checkout gear of the present utility model, better, the in tandem that three described laser displacement measurement devices 2 are parallel to described track 7 bearing of trends sequentially is respectively the first laser displacement measurement 21, the second laser displacement measurement 22 and the 3rd laser displacement measurement 23, and the distance between described the first laser displacement measurement 21 and the second laser displacement measurement 22 is 0.025m, and the distance between described the second laser displacement measurement 22 and the 3rd laser displacement measurement 23 is 0.219m.Obtain for the accurate survey data that detects 0.05m to 1m track Short wave irregularity with this.
Rail top face irregularity checkout gear of the present utility model, its data collection and display module comprises slave computer data acquisition unit 3 and host computer storage and display unit, described data acquisition unit is connected with described mileage speed module 13 and displacement measurement module.Wherein, better described host computer storage and display unit can be one to be arranged at a computer on walking dolly 1 vehicle frame; Further, described computer is fixedly installed on the push rod 5, and this push rod 5 is fixed on the vehicle frame of described walking dolly 1.
Better, described slave computer data acquisition unit 3 comprises single-chip microcomputer and A/D modular converter; In order to control trigger collection, forward and reverse operation self adaptation and serial data transmit.Described host computer storage and display unit then adopts Visual Basic and the exploitation of TeeChart control; Utilize serial ports to gather the data of slave computer data acquisition unit 3 transmission, take the Event triggered collection, the initial data deposit of collection, and the data that gather are carried out carrying out waveform and showing after validity judges.Wherein, described Event triggered can be by setting the mode apart from the interval triggering of walking dolly 1 walking, and concrete can trigger setting to the rotational angle of walking wheels 12.
Rail top face irregularity checkout gear of the present utility model, better, being connected via the 422-USB serial equipment between described slave computer data acquisition unit 3 and the described host computer storage and display unit, also can be other communication interface, as long as can satisfy real-time transfer of data effect.
Rail top face irregularity checkout gear of the present utility model, in its better embodiment, the T-shaped body frame structure for automotive of described walking dolly 1 for being combined by two straight beams, wherein being parallel to track 7 directly over a detection beam 11 corresponding described tracks 7 arranges, another root straight beam then arranges perpendicular to track 7, and the bottom surface that three described laser displacement measurement devices 2 are arranged at this detection beam 11 is to upper surface setting that should track 7; Therefore, three laser displacement measurement devices 2 upper surface that can aim at this track 7 carries out distance and detects; Described walking wheels 12 are provided with three rollers, and are arranged at respectively three ends of T-shaped body frame structure for automotive, thereby can be located on two parallel tracks 7.
Rail top face irregularity checkout gear of the present utility model as mentioned above, better, the box beam of described straight beam for being pressed into by metal sheet, whereby, be parallel to be provided with in the detection beam 11 of described track 7 can accommodating displacement measurement module storage tank, not only make the structure of this walking dolly 1 more compact and firm, and guaranteed the rigidity of structure and light requirement.
And rail top face irregularity checkout gear of the present utility model, the major function of its walking dolly 1 is that the encoder of mileage speed module 13 and the laser displacement measurement device 2 of displacement measurement module are installed.Smooth walking on rail level guarantees the overall structure rigidity, strictly insulate with track 7; The lateral displacement of dolly requires control within the specific limits, guarantees to detect the coherence and continuity of beam 11 sensing stations; Therefore, the better embodiment of the walking dolly 1 that the utility model proposes does not limit the shape of walking dolly 1, as long as can realize above-mentioned purpose.
Rail top face irregularity checkout gear of the present utility model is better as mentioned above, the roller that described walking wheels 12 are made for nylon material, and be provided with LM type tread; Guarantee walking performance function and the insulating properties of dolly.
As shown in the figure, rail top face irregularity checkout gear of the present utility model, in its better embodiment, described vehicle frame is provided with a plurality of location steamboat 6, the side of the corresponding two described tracks 7 of described location steamboat 6 arranges, and horizontal cooperation the by between location steamboat 6 and two tracks 7, makes walking dolly 1 in the process that track 7 is walked, can not produce lateral displacement, further guarantee the accuracy of measuring; Described location steamboat 6 via adjustable locator in conjunction with being fixed on the described vehicle frame, in order to make walking dolly 1 walking more smooth, can be by the adjustment adjustable locator, and step up and unclamp walking dolly 1 horizontal resistance in traveling process.Whereby, located lateral adopts the mode of location steamboat 6 (elastomeric material) and adjustable locator combination, guarantees the controllability of lateral displacement.
Please refer to shown in Figure 3ly, be the theory diagram of rail top face irregularity checkout gear of the present utility model preferred embodiment; Wherein, this rail top face irregularity checkout gear comprises three laser displacement sensors, encoder, a cover slave computer data acquisition unit 3 and 1 a cover host computer storage and display unit, all is integrated on the walking dolly 1.Be parallel at walking dolly 1 on the vehicle frame position (can be aforesaid straight beam) of track 7, the straight line at the test point place of installation encoder 2 and 2, three laser displacement measurement devices 2 of laser displacement measurement device is as datum line beam; Encoder 2 produces pulse information, and laser displacement measurement device 2 is measured respectively the detection reference beam to the distance of rail surface.Pulse information and the range information of output are transferred to slave computer data acquisition unit 3, pulse information and laser displacement measurement device 2 that slave computer data acquisition unit 3 capturing and coding devices are sent here are sent range information here, send to host computer storage and display unit 7 through after the inter-process by the 422-USB serial equipment.Host computer storage and display unit 7 adopts Visual Basic and the exploitation of TeeChart control.Utilize serial ports to gather the data of slave computer transmission, take the Event triggered collection, the initial data deposit of collection, and the data that gather are carried out carrying out waveform and showing after validity judges.
The above only is the schematic specific embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. a rail top face irregularity checkout gear is characterized in that, this checkout gear comprises:
Walking dolly is provided with a vehicle frame and walking wheels, and described walking wheels are arranged at two bottom sides and corresponding two parallel track settings of described vehicle frame;
Mileage speed module is arranged on the described vehicle frame, and closes setting with described road wheel assembly;
The displacement measurement module, comprise three laser displacement measurement devices, described laser displacement measurement device is fixed on the vehicle frame of described walking dolly, and three described laser displacement measurement devices are over against described track upper surface wherein and along spread configuration on the straight line of this track bearing of trend;
Data collection and display module comprises slave computer data acquisition unit and host computer storage and display unit, and described data acquisition unit is connected with described mileage speed module and displacement measurement module.
2. rail top face irregularity checkout gear as claimed in claim 1, it is characterized in that, the in tandem that three described laser displacement measurement devices are parallel to described track bearing of trend sequentially is respectively the first laser displacement measurement device, the second laser displacement measurement device and the 3rd laser displacement measurement device, and the distance between described the first laser displacement measurement device and the second laser displacement measurement device is 0.025m, and the distance between described the second laser displacement measurement device and the 3rd laser displacement measurement device is 0.219m.
3. rail top face irregularity checkout gear as claimed in claim 1, it is characterized in that, the T-shaped body frame structure for automotive of described walking dolly for being combined by two straight beams, wherein one arrange directly over detecting the corresponding described track of beam, the bottom surface that three described laser displacement measurement devices are arranged at this detection beam is to upper surface setting that should track; Described walking wheels are provided with three rollers, and are arranged at respectively three ends of T-shaped body frame structure for automotive.
4. rail top face irregularity checkout gear as claimed in claim 3 is characterized in that, the two piece box beam of described straight beam for being pressed into by metal sheet.
5. rail top face irregularity checkout gear as claimed in claim 1 is characterized in that, it is the roller that nylon material is made that the described heart is walked wheels, and is provided with LM type tread.
6. rail top face irregularity checkout gear as claimed in claim 1, it is characterized in that, described vehicle frame is provided with a plurality of location steamboat, and the side of the corresponding two described tracks of described location steamboat arranges, and described location steamboat is fixed on the described vehicle frame via the adjustable locator combination.
7. rail top face irregularity checkout gear as claimed in claim 1 is characterized in that, described mileage speed module comprise one with described road wheel assembly close the encoder of setting.
8. rail top face irregularity checkout gear as claimed in claim 1 is characterized in that, described displacement measurement module also is provided with the transition installing plate, described transition installing plate can with described walking dolly secure bond.
9. rail top face irregularity checkout gear as claimed in claim 1 is characterized in that, described slave computer data acquisition unit comprises single-chip microcomputer and A/D modular converter.
10. rail top face irregularity checkout gear as claimed in claim 1 is characterized in that, is connected via the 422-USB serial equipment between described slave computer data acquisition unit and the described host computer storage and display unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202080365U CN202644332U (en) | 2012-05-09 | 2012-05-09 | Rail top surface irregularity detecting device |
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| CN2012202080365U CN202644332U (en) | 2012-05-09 | 2012-05-09 | Rail top surface irregularity detecting device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105083320A (en) * | 2015-05-15 | 2015-11-25 | 西南交通大学 | Detection method and device of track regularity state |
| CN105157624A (en) * | 2015-05-20 | 2015-12-16 | 湖南大学 | Combined chord measurement method for longitudinal irregularity of steel rail |
| CN106524987A (en) * | 2016-12-15 | 2017-03-22 | 西南交通大学 | Irregularity measurement device for rail surface of suspended monorail box type rail beam |
| CN107504935A (en) * | 2017-07-19 | 2017-12-22 | 兰昆艳 | The measuring instrument of plate thickness is heightened under a kind of railway ballastless track rail |
| CN107843219A (en) * | 2017-10-26 | 2018-03-27 | 西南交通大学 | Track geometry irregularities measurement apparatus and method |
| CN108072332A (en) * | 2018-01-23 | 2018-05-25 | 中国铁路上海局集团有限公司上海高铁维修段 | Mobile steel rail condition detecting system |
| CN108413918A (en) * | 2018-02-05 | 2018-08-17 | 北京力铁轨道交通设备有限公司 | A kind of low speed measures the method and combined measurement method of orbit geometry parameter |
| CN110530300A (en) * | 2019-09-05 | 2019-12-03 | 西南交通大学 | A kind of vertical Irregularity detection method of track |
| CN112937642A (en) * | 2021-04-09 | 2021-06-11 | 中国人民解放军国防科技大学 | High-speed maglev train relative mileage detection sensor and detection method |
| CN115388815A (en) * | 2022-07-08 | 2022-11-25 | 西南交通大学 | Static measurement method and device for irregularity of track functional part of magnetic suspension system |
| CN116552598A (en) * | 2023-07-10 | 2023-08-08 | 西南交通大学 | Permanent magnet track irregularity detection device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105083320A (en) * | 2015-05-15 | 2015-11-25 | 西南交通大学 | Detection method and device of track regularity state |
| CN105157624A (en) * | 2015-05-20 | 2015-12-16 | 湖南大学 | Combined chord measurement method for longitudinal irregularity of steel rail |
| CN105157624B (en) * | 2015-05-20 | 2017-11-03 | 湖南大学 | A kind of compound chord measurement for being used to measure the longitudinal longitudinal irregularity of rail |
| CN106524987A (en) * | 2016-12-15 | 2017-03-22 | 西南交通大学 | Irregularity measurement device for rail surface of suspended monorail box type rail beam |
| CN107504935A (en) * | 2017-07-19 | 2017-12-22 | 兰昆艳 | The measuring instrument of plate thickness is heightened under a kind of railway ballastless track rail |
| CN107843219A (en) * | 2017-10-26 | 2018-03-27 | 西南交通大学 | Track geometry irregularities measurement apparatus and method |
| CN108072332A (en) * | 2018-01-23 | 2018-05-25 | 中国铁路上海局集团有限公司上海高铁维修段 | Mobile steel rail condition detecting system |
| CN108413918A (en) * | 2018-02-05 | 2018-08-17 | 北京力铁轨道交通设备有限公司 | A kind of low speed measures the method and combined measurement method of orbit geometry parameter |
| CN108413918B (en) * | 2018-02-05 | 2020-02-21 | 北京力铁轨道交通设备有限公司 | Method for measuring geometrical parameters of track at low speed and composite measuring method |
| CN110530300A (en) * | 2019-09-05 | 2019-12-03 | 西南交通大学 | A kind of vertical Irregularity detection method of track |
| CN112937642A (en) * | 2021-04-09 | 2021-06-11 | 中国人民解放军国防科技大学 | High-speed maglev train relative mileage detection sensor and detection method |
| CN115388815A (en) * | 2022-07-08 | 2022-11-25 | 西南交通大学 | Static measurement method and device for irregularity of track functional part of magnetic suspension system |
| CN115388815B (en) * | 2022-07-08 | 2024-04-02 | 西南交通大学 | Method and device for measuring irregularity of track functional part of magnetic suspension system in static mode |
| CN116552598A (en) * | 2023-07-10 | 2023-08-08 | 西南交通大学 | Permanent magnet track irregularity detection device and method |
| CN116552598B (en) * | 2023-07-10 | 2023-11-07 | 西南交通大学 | Permanent magnet track irregularity detection device and method |
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