Rail wheel set measuring system

Abstract

The utility model discloses a track wheel set measuring system, comprising a measuring unit which comprises an inner measuring unit and an outer measuring unit which are respectively arranged at the inner side and the outer side of a track; each of the inner measuring unit and the outer measuring unit comprises a plurality of first sensors, and the first sensors are used for measuring contour data of a wheel set; the outer measuring unit further comprises a second sensor which is used for measuring the diameter of the wheel set and the inner distance of the wheel set. The measuring unit further comprises an air nozzle which is used for spraying air to the mirror surfaces of the first sensor and the second sensor; and the temperature control unit is used for providing a circulating constant-temperature medium for the first sensor and the second sensor. The track wheel set measuring system is high in measuring precision and measuring stability, can realize outdoor measurement, and can cope with weather such as rain, snow, sand and dust.

Description

TECHNICAL FIELD

[0001] The utility model relates to the rail wheel pair measurement technical field, concretely related to a rail wheel pair measurement system. BACKGROUND

[0002] Wheel pair is the part on the locomotive and vehicle contacting with the steel rail, which is composed of two wheels firmly pressed on the same axle. The function of wheel pair is to ensure the running and steering of the locomotive and vehicle on the steel rail, to bear the static and dynamic load from the locomotive and vehicle, to transfer it to the steel rail, and to transfer the load caused by the track irregularity to the parts of the locomotive and vehicle.

[0003] The contact part of the wheel with the steel rail bears a large pressure and friction force in use. In operation, the left and right wheels inevitably roll on the steel rail with different diameters, resulting in wheel wear and tread damage. When the geometric parameters of the train wheel tread exceed the tolerance, it will seriously affect the running state of the vehicle, the health of the track and the comfort of the passengers, and even cause the vehicle to overturn, derail and other phenomena. Therefore, it is of great significance to timely grasp the geometric size change of the wheel pair and develop the reprofiling plan to ensure the safe operation of the train and improve the service life of the wheel pair.

[0004] Currently, there are two main ways to detect the geometric size of the wheel: static detection and dynamic through detection. The static detection method mainly uses mechanical measuring tools, which is mostly contact detection. This method is greatly affected by human factors, and has slow detection efficiency, low accuracy, and lacks reliability and traceability of data. The dynamic through detection method can detect in real time when the vehicle enters the garage, which is a trackside non-contact measurement system installed on the ground. It does not need to occupy the vehicle turnaround time, and has the advantages of fast efficiency, high precision, etc. However, this measurement system has a complex structure, high cost and maintenance cost, and needs to arrange multiple measurement sensors. The measurement system also has strict requirements for the use environment, usually needs to establish a special detection room for measurement, cannot realize outdoor all-weather measurement, cannot cope with weather such as rain, snow and dust, and has harsh use conditions. In addition, due to the measurement principle, the diameter is indirectly measured by the reference value at some positions of the wheel (such as the rim), and the actual measurement accuracy and measurement range are limited, and the system stability and reliability are insufficient. SUMMARY

[0005] The utility model aims at providing a rail wheel pair measurement system, which has high measurement accuracy and stability, and can realize outdoor measurement.

[0006] To this end, the utility model provides a track wheel pair measurement system, include: measurement unit, it includes respectively setting in the inside and the outside of track inside measurement unit and outside measurement unit, the inside measurement unit and the outside measurement unit all include a plurality of first sensor, the first sensor is used for measuring the profile data of wheel pair, the outside measurement unit still includes second sensor, the second sensor is used for measuring wheel pair diameter and wheel pair inside distance, the measurement unit still includes air nozzle, the air nozzle is used for the mirror surface of first sensor and second sensor is jetted, temperature control unit is used for providing the circulating flow constant temperature medium of first sensor and second sensor.

[0007] Preferably, the inside measurement unit includes an inside detection housing arranged along the length direction of the track.

[0008] Preferably, the inside detection housing includes an inside detection cover including an inside inclined surface and an inside top surface, the inside top surface is a horizontal surface, the inside inclined surface forms an obtuse angle with the inside top surface, and the inside inclined surface extends downwardly and inclines toward the direction of the track.

[0009] Preferably, the inside detection housing is provided with two first sensors arranged symmetrically, and two first transparent cover plates are arranged symmetrically on the inside inclined surface, and the two first transparent cover plates correspond to the lenses of the two first sensors respectively.

[0010] Preferably, the outside measurement unit includes an outside detection housing arranged along the length direction of the track.

[0011] Preferably, the outside detection housing includes an outside detection cover including an outside inclined surface and an outside top surface, the outside top surface is a horizontal surface, the outside inclined surface forms an obtuse angle with the outside top surface, and the outside inclined surface extends downwardly and inclines toward the direction of the track.

[0012] Preferably, the inside detection housing is provided with one second sensor and two first sensors arranged symmetrically, and the second sensor is located between the two first sensors; one second transparent cover plate and two first transparent cover plates are arranged on the inside inclined surface, the two first transparent cover plates correspond to the lenses of the two first sensors respectively, and the second transparent cover plate corresponds to the lens of the second sensor.

[0013] Preferably, the temperature control unit includes a medium housing, a main inlet pipe and a main outlet pipe, the medium housing is used for containing the constant temperature medium, and the main inlet pipe and the main outlet pipe are connected to the medium housing respectively.

[0014] Preferably, the inner measuring unit is provided with a first flow pipe, the first flow pipe penetrates the two first sensors in sequence, and two outlets of the first flow pipe are connected with the main inlet pipe and the main outlet pipe respectively.

[0015] Preferably, the outer measuring unit is provided with a second flow pipe, the second flow pipe penetrates the second sensor and the two first sensors, and two outlets of the second flow pipe are connected with the main inlet pipe and the main outlet pipe respectively.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that:

[0017] The wheel pair measuring system adopts modular design, has simple structure, simple installation and maintenance process, can reduce the maintenance workload of the measuring system, and reduces the labor cost and downtime. In addition, the measuring system directly measures according to the principle of three-point positioning of a circle when measuring the wheel diameter, instead of calculating the diameter according to the reference value of the wheel rim, so that the measured value is real and reliable, and the measuring accuracy can be improved.

[0018] The wheel pair measuring system comprises a temperature control unit, can ensure that the lens of the sensor always remains ice-free, fog-free and snow-free even in a low-temperature environment, and enables the sensor to stably and effectively measure; by arranging the temperature control unit, the measuring system can be used in an outdoor environment without building a detection station, can prevent the influence of rain, snow and other bad weather, ensures the stability of the measuring system, and can realize outdoor all-weather measurement.

[0019] The wheel pair measuring system comprises a jet nozzle, can clean the mirror surface of the sensor by jetting, avoids that the lens of the sensor is attached and covered by rain, snow, fallen leaves and dust, enables the sensor to normally measure in windy and sandy bad weather, ensures the stability of the measuring system, and can realize outdoor all-weather measurement.

[0020] Other features and advantages of the utility model will become more apparent after reading the specific embodiments of the utility model in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of an embodiment of the utility model rail wheel pair measuring system;

[0022] Figure 2 is a partial structure schematic view of an embodiment of the utility model rail wheel pair measuring system;

[0023] Figure 3 is a partial structure exploded view of an embodiment of the utility model rail wheel pair measuring system;

[0024] Figure 4 is one of the partial structure schematic diagrams of one embodiment of the rail wheel set measurement system of the utility model;

[0025] Figure 5 is the second partial structure schematic diagram of one embodiment of the rail wheel set measurement system of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will combine with the drawings and examples, make further detailed description to the utility model.

[0027] As Figures 1-5 The rail wheel set measurement system of the utility model includes: a measurement unit, which includes an inner measurement unit and an outer measurement unit arranged on the inner side and the outer side of the track 10 respectively; the inner measurement unit and the outer measurement unit both include a plurality of first sensors 21, and the first sensors 21 are used for measuring the profile data of the wheel set 100; the outer measurement unit further includes a second sensor 22, and the second sensor 22 is used for measuring the diameter of the wheel set 100 and the inner distance of the wheel set 100; the measurement unit further includes an air nozzle 25, and the air nozzle 25 is used for spraying the mirror surface of the first sensor 21 and the second sensor 22; a temperature control unit is used for providing the first sensor 21 and the second sensor 22 with circulating flow constant temperature medium.

[0028] The inner measurement unit includes an inner detection shell 23, the inner detection shell 23 is arranged along the length direction of the track 10, and two first sensors 21 are symmetrically installed in the inner detection shell 23.

[0029] The outer measurement unit includes an outer detection shell 24, the outer detection shell 24 is arranged along the length direction of the track 10. One second sensor 22 and two first sensors 21 are installed in the outer detection shell 24, the two first sensors 21 are symmetrically arranged, and the second sensor 22 is located between the two first sensors 21.

[0030] The inner detection shell 23 includes an inner detection cover, which is an integral piece and includes an inner inclined surface 231 and an inner top surface 232, the inner top surface 232 is a horizontal surface, the included angle between the inner inclined surface 231 and the inner top surface 232 is an obtuse angle, and the inner inclined surface 231 extends downwardly and obliquely towards the track 10.

[0031] The outer detection shell 24 includes an outer detection cover, which is an integral piece and includes an outer inclined surface 241 and an outer top surface 242, the outer top surface 242 is a horizontal surface, the included angle between the outer inclined surface 241 and the outer top surface 242 is an obtuse angle, and the outer inclined surface 241 extends downwardly and obliquely towards the track 10.

[0032] The inner inclined surface 231 and the outer inclined surface 241 are symmetrically located on both sides of the track 10.

[0033] By setting the lens of the first sensor 21 on the inner inclined surface 231, the lens of the first sensor 21 can be aligned with the wheel set 100 placed on the track 10, the scanning range of the lens of the first sensor 21 on the wheel set 100 can be increased, and the measurement efficiency and accuracy can be improved.

[0034] By setting the lens of the first sensor 21 and the lens of the second sensor 22 on the outer inclined surface 241, the lens of the first sensor 21 and the lens of the second sensor 22 can be aligned with the wheel set 100 placed on the track 10, the scanning range of the lens of the first sensor 21 and the lens of the second sensor 22 on the wheel set 100 can be increased, and the measurement efficiency and accuracy can be improved.

[0035] The inner inclined surface 231 and the outer inclined surface 241 are symmetrically located on both sides of the track 10, so that the first sensors 22 on both sides of the wheel set 100 are symmetrically distributed, thereby achieving uniform and symmetric measurement of the wheel set 100, and improving the measurement efficiency and accuracy.

[0036] The inner inclined surface 231 is provided with two first transparent cover plates 233, and the two first transparent cover plates 233 correspond to the lenses of the two first sensors 21 respectively.

[0037] The inner detection housing 23 is provided with two air nozzles 25, and the two air nozzles 25 correspond to the two first transparent cover plates 233 respectively. The air nozzles 25 are used for air blowing to the two first transparent cover plates 233, so as to clean the two first transparent cover plates 233, avoid the lenses of the first sensors 21 being covered by rain, snow, fallen leaves and dust, and enable the first sensors 21 to effectively scan and measure the wheel set 100.

[0038] The outer inclined surface 241 is provided with two first transparent cover plates 233 and a second transparent cover plate 243, the two first transparent cover plates 233 correspond to the lenses of the two first sensors 21 respectively, and the second transparent cover plate 243 corresponds to the lens of the second sensor 22.

[0039] The outer detection housing 24 is provided with three air nozzles 25, and the three air nozzles 25 correspond to the two first transparent cover plates 233 and the second transparent cover plate 243 respectively. The air nozzles 25 are used for air blowing to the first transparent cover plates 233 and the second transparent cover plate 243, so as to clean the two first transparent cover plates 233 and the second transparent cover plate 243, avoid the lenses of the first sensors 21 and the lens of the second sensor 22 being covered by rain, snow, fallen leaves and dust, and enable the first sensors 21 and the second sensor 22 to effectively scan and measure the wheel set 100.

[0040] The measuring unit further comprises an air source (not shown in the figure), and an inner air pipe (not shown in the figure) connected with the air nozzle 25 is further arranged in the inner detection shell 23, and an outer air pipe (not shown in the figure) connected with the air nozzle 25 is further arranged in the outer detection shell 24, and the inner air pipe and the outer air pipe are connected with the air source. The air source is used for providing compressed gas to the inner air pipe and the outer air pipe, and the compressed gas enters the corresponding air nozzle 25 through the inner air pipe and the outer air pipe, so that the air nozzle 25 can spray air.

[0041] The connection mode of the air source and the air nozzle 25 can be a mode commonly used in the technical field, which is not specifically limited here. The mode in which the compressed air flows from the air source to the inner air pipe and the outer air pipe can be a mode commonly used in the technical field, which is not specifically limited here. The mode in which the compressed gas enters the corresponding air nozzle 25 through the inner air pipe and the outer air pipe can be a mode commonly used in the technical field, which is not specifically limited here. For example, the measuring unit further comprises a pressure pump, and the pressure pump is used to provide power for the compressed air, so that the compressed air can flow.

[0042] The core measurement principle of the utility model is the measurement technology based on the laser light cutting method, which is a visual measurement method. The sensor of the utility model is composed of a laser and a high-speed CCD camera. A high-energy laser beam is generated by using the laser. The laser beam is transmitted through a cylindrical mirror and a grating emitting line light source to irradiate on the wheel set 100, so as to form a bright laser light band on the surface of the measurement target. At the same time, the CCD camera captures the image of the light band in real time. Subsequently, the image is recognized and processed by computer software to obtain the two-dimensional contour and size information of the wheel set 100.

[0043] Based on the above-mentioned measurement principle, the inner measuring unit and the outer measuring unit are arranged on the inner side of the track 10 and the outer side of the track 10 respectively. The inner measuring unit and the outer measuring unit each comprise two symmetrically arranged first sensors 21. The two first sensors 21 of the inner measuring unit and the two first sensors 21 of the outer measuring unit correspond to each other and are mirror image arranged, so as to realize the splicing of the left and right profiles of the wheel set 100.

[0044] In addition, the second sensor 22 in the outer measuring unit is used to measure the diameter of the wheel set 100 and the inner distance of the wheel set 100. The diameter of the wheel set 100 is measured according to the principle of determining a circle by three points: three non-collinear points on a known circle can uniquely determine a circle. Because for any two points, there is a unique circle tangent to the line connecting the two points and the center of the circle, and the center of the circle is located on the perpendicular bisector of the line connecting the two points. The third point further determines the position and size of the circle. The three points for measuring the diameter of the wheel are measured by the two first sensors 21 and the second sensor 22 of the outer measuring unit. The inner distance of the wheel set 100 is measured by the second sensors 22 of the two outer measuring units: the actual distance between the two outer measuring units is known, and when the inner measuring unit measures the position relationship from the wheel back, the actual inner distance of the wheel set can be calculated by subtracting the distance from the two sensor boxes to the wheel back of the two wheel sets and the wheel shape size value measured by other sensors.

[0045] The temperature control unit includes a main inlet pipe 31 and a main outlet pipe 32 which are parallel to each other and are located below the inner detection housing 23 and the outer detection housing 24. The temperature control unit further includes a medium housing 33 and a pressure pump (not shown in the figure), and the main inlet pipe 31 and the main outlet pipe 32 are in communication with the medium housing 33. The medium housing 33 contains a constant-temperature medium, which can be water at 20°C, without specific limitation here. The pressure pump can be a general pump in the technical field, without specific limitation here. The pressure pump provides flow power for the constant-temperature medium, so that the constant-temperature medium can circulate.

[0046] The inner measuring unit is provided with a first flow pipe (not shown in the figure) which penetrates the two first sensors 21 in sequence, and the two outlets of the first flow pipe are in communication with the main inlet pipe 31 and the main outlet pipe 32, respectively. The constant-temperature medium can circulate in the main inlet pipe 31, the first flow pipe and the main outlet pipe 32, so that the constant-temperature medium can play a heat preservation role for the first sensor 21, so that the first sensor 21 can maintain a constant temperature, so that the first sensor 21 can ensure that the lens always remains ice-free, fog-free and snow-free even in a low-temperature environment, so that the sensor can stably and effectively measure, and ensure the accuracy and reliability of the measurement results of the inner measuring unit.

[0047] The outer measuring unit is internally provided with a second flow pipe (not shown in the figure) penetrating through the two first sensors 21 and the second sensor 22, and two outlets of the second flow pipe are respectively connected with the main inlet pipe 31 and the main outlet pipe 32. The constant-temperature medium can circulate in the main inlet pipe 31, the second flow pipe and the main outlet pipe 32, so that the constant-temperature medium can play a heat preservation role on the first sensor 21 and the second sensor 22, the first sensor 21 and the second sensor 22 can maintain constant temperature, and the first sensor 21 and the second sensor 22 can ensure that the lens always remains in an ice-free, fog-free and snow-free state even in a low-temperature environment, so that the sensor can stably and effectively perform measurement, and the accuracy and reliability of the measurement result of the inner measuring unit are ensured.

[0048] In summary, through the temperature control unit, the sensor can ensure that the lens always remains in an ice-free, fog-free and snow-free state even in a low-temperature environment, so that the sensor can stably and effectively perform measurement; through the temperature control unit, the measurement system of the utility model can be used in an outdoor environment without building a detection station, and the influence of rain and snow and other bad weather can be prevented. The stability of the measurement system is ensured, and the outdoor all-weather measurement can be realized.

[0049] The track wheel set measurement system further comprises a control unit 40, and the control unit 40 comprises a computer, a display, an air conditioning unit, a 4G modem and an UPS. The control unit 40 is connected with the measurement unit through the pre-buried power line and data line, and is used for power supply and control of the measurement unit and receiving measurement data. After receiving the data of the measurement unit, the control unit 40 is uploaded to the cloud-based measurement and analysis application program through the 4G modem and the antenna, and the result data can also be stored in the customer's local area network through 4G. The uninterrupted power supply (UPS) of the control unit 40 can ensure that the system can normally operate in the case of power failure, and the UPS can supply power to the system for about 10-20 minutes, so as to ensure that the system is controlled to shut down, and data loss and equipment damage caused by sudden power failure on site are avoided.

[0050] The wheel set measurement system adopts a modular design, has a simple structure, and has a simple installation and maintenance process, so that the maintenance workload of the measurement system can be reduced, and the labor cost and downtime can be reduced. In addition, the measurement system directly measures according to the principle of three-point positioning of a circle when measuring the wheel diameter, instead of calculating the diameter according to the reference value of the wheel rim, so that the measured value is real and reliable.

[0051] The wheel pair measurement system of the utility model discloses a temperature control unit, can make sensor still can ensure that the lens keeps ice-free, mist-free and snow-free state all the time even in the environment of low temperature, make sensor can stably and effectively measure, through setting temperature control unit, can make the measurement system of the utility model can be used in the outdoor environment without setting up detection station, can prevent rain and snow and other bad weather influence, ensure the stability of measurement system, can realize the outdoor all-weather measurement.

[0052] The wheel pair measurement system of the utility model discloses a jet nozzle 25, can spray the mirror surface of sensor, avoid the lens of sensor being covered by rain and snow, fallen leaves and dust, can make sensor normal measurement in windy and sandy bad weather, ensure the stability of measurement system, realize the outdoor all-weather measurement.

[0053] The above embodiment is only used to illustrate the technical scheme of the utility model, and is not limited thereto; although the utility model has been described in detail with reference to the foregoing embodiment, for those skilled in the art, the technical scheme recorded in the foregoing embodiment can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme claimed by the utility model.

Claims

1. A rail wheelset measurement system, characterized by, The rail wheel set measuring system comprises: a measuring unit comprising an inner measuring unit and an outer measuring unit arranged respectively on the inner side and the outer side of the rail; the inner measuring unit and the outer measuring unit each comprise a plurality of first sensors for measuring profile data of the wheel set; the outer measuring unit further comprises a second sensor for measuring the wheel set diameter and the wheel set inner distance; the measuring unit further comprises an air nozzle for air blowing on the mirror surface of the first sensor and the second sensor; a temperature control unit for providing the first sensor and the second sensor with circulating constant-temperature medium.

2. The rail wheel set measuring system according to claim 1, wherein the inner measuring unit comprises an inner detection housing arranged along the length direction of the rail.

3. The rail wheel set measuring system according to claim 2, wherein the inner detection housing comprises an inner detection cover comprising an inner inclined surface and an inner top surface, the inner top surface being a horizontal surface, the inner inclined surface being downwardly inclined to the direction of the rail.

4. The rail wheel set measuring system according to claim 3, wherein the inner detection housing is provided with two first sensors arranged symmetrically, and two first transparent cover plates arranged symmetrically on the inner inclined surface, the two first transparent cover plates corresponding to the lenses of the two first sensors respectively.

5. The rail wheel set measuring system according to claim 1, wherein the outer measuring unit comprises an outer detection housing arranged along the length direction of the rail.

6. The rail wheel set measuring system according to claim 5, wherein the outer detection housing comprises an outer detection cover comprising an outer inclined surface and an outer top surface, the outer top surface being a horizontal surface, the outer inclined surface being downwardly inclined to the direction of the rail.

7. The rail wheel set measuring system according to claim 3, wherein the inner detection housing is provided with one second sensor and two first sensors arranged symmetrically, the second sensor being located between the two first sensors; the inner inclined surface is provided with one second transparent cover plate and two first transparent cover plates, the two first transparent cover plates corresponding to the lenses of the two first sensors respectively, and the second transparent cover plate corresponding to the lens of the second sensor.

8. The rail wheel set measuring system according to claim 1, wherein the temperature control unit comprises a medium housing for containing the constant-temperature medium, and a main inlet pipe and a main outlet pipe in communication with the medium housing.

9. The rail wheel set measuring system according to claim 8, wherein the inner measuring unit is provided with a first flow pipe penetrating the two first sensors in sequence, and two outlets of the first flow pipe are in communication with the main inlet pipe and the main outlet pipe respectively.

10. The rail wheel alignment system of claim 8, wherein, the outer measuring unit is provided with a second flow pipe, the second flow pipe penetrates the second sensor and the two first sensors, and two outlets of the second flow pipe are respectively connected with the main inlet pipe and the main outlet pipe.

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