阅读说明：本技术 一种轮对踏面全局检测装置 (Global detection device for wheel set tread ) 是由 高春甫 周崇秋 包思远 王冬云 贺新升 何力钧 黄平 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种轮对踏面全局检测装置,包括轮对举升机构、轮对旋转驱动机构、轨道车运动机构和传感测量机构；轮对举升机构包括电动液压升降台；轮对旋转驱动机构包括底板、两个支撑轮单元,支撑轮单元包括第二滑台模组、第一滑台模组和安装支架,一个安装支架上安装有从动轮,另一个安装支架上安装有驱动轮和减速电机；轨道车运动机构包括轨道车、第四滑台模组、传感器支撑架和液压三爪卡盘；传感测量机构包括位移传感模块和激光轮廓传感模块,位移传感模块和激光轮廓传感模块均包括第五滑台模组、第三滑台模组和传感器支架,一个传感器支架上固设有探针位移传感器,另一个传感器支架上固设有激光轮廓传感器。本发明提高了轮对踏面的检测效率。(The invention discloses a wheel set tread global detection device, which comprises a wheel set lifting mechanism, a wheel set rotation driving mechanism, a rail car movement mechanism and a sensing measurement mechanism, wherein the wheel set lifting mechanism is arranged on the wheel set; the wheel set lifting mechanism comprises an electric hydraulic lifting platform; the wheel set rotation driving mechanism comprises a bottom plate and two supporting wheel units, each supporting wheel unit comprises a second sliding table module, a first sliding table module and a mounting bracket, a driven wheel is mounted on one mounting bracket, and a driving wheel and a speed reducing motor are mounted on the other mounting bracket; the rail car movement mechanism comprises a rail car, a fourth sliding table module, a sensor support frame and a hydraulic three-jaw chuck; the sensing and measuring mechanism comprises a displacement sensing module and a laser profile sensing module, the displacement sensing module and the laser profile sensing module respectively comprise a fifth sliding table module, a third sliding table module and a sensor support, a probe displacement sensor is fixedly arranged on one sensor support, and a laser profile sensor is fixedly arranged on the other sensor support. The invention improves the detection efficiency of the wheel set tread.)

1. The utility model provides a wheel set tread global detection device which characterized in that: the device comprises a wheel set lifting mechanism, a wheel set rotation driving mechanism, a rail car movement mechanism and a sensing measurement mechanism; the wheel set lifting mechanism is positioned between the wheel set rotation driving mechanism and the rail car movement mechanism;

the wheel set lifting mechanism comprises an electric hydraulic lifting platform and two V-shaped blocks which are arranged on the top surface of the electric hydraulic lifting platform and used for supporting a rotating shaft of a wheel set, and the rotating shaft of the wheel set is in rotating fit with the V-shaped blocks;

the wheel set rotation driving mechanism comprises a bottom plate and two supporting wheel units, each supporting wheel unit comprises a second sliding table module fixedly arranged on the bottom plate, a first sliding table module fixedly connected with a sliding block of the second sliding table module and a mounting bracket fixedly connected with a sliding block of the first sliding table module, a driven wheel is mounted on one mounting bracket, and a driving wheel and a speed reduction motor capable of driving the driving wheel to rotate are mounted on the other mounting bracket;

the rail car movement mechanism comprises a rail car, a fourth sliding table module fixedly arranged on the rail car, a sensor support frame fixedly connected with a sliding block of the fourth sliding table module, and a hydraulic three-jaw chuck rotatably connected with the sensor support frame, wherein the hydraulic three-jaw chuck is used for clamping one end of a rotating shaft of the wheel pair, and the rail car can roll along a detection rail;

the sensing measurement mechanism comprises a displacement sensing module and a laser contour sensing module, the displacement sensing module and the laser contour sensing module respectively comprise a fifth sliding table module fixedly arranged on the sensor support frame, a sliding block connecting piece fixedly connected with a sliding block of the fifth sliding table module, a third sliding table module fixedly arranged on the sliding block connecting piece and a sensor support fixedly arranged on a sliding block of the third sliding table module, a probe displacement sensor is fixedly arranged on the sensor support in the displacement sensing module, a laser contour sensor is fixedly arranged on the sensor support in the laser contour sensing module, and the probe displacement sensor and the laser contour sensor can be opposite to the tread of the wheel pair;

the probe displacement sensor and the laser profile sensor are respectively and electrically connected with an industrial personal computer; the axial of drive wheel the axial from the driving wheel the slip direction of the slider of second slip table module the slip direction of the slider of fourth slip table module reaches the slip direction of the slider of third slip table module all with the axial direction parallel of the pivot of wheel pair, detect orbital length direction the slip direction of the slider of first slip table module with the slip direction of the slider of fifth slip table module with the axial vertical of the pivot of wheel pair.

2. The wheel set tread global detection device according to claim 1, wherein: still include the wheel pair track, the wheel pair can follow the wheel pair track rolls, the wheel pair track with detect the track parallel.

3. The wheel set tread global detection device according to claim 1, wherein: each V-shaped block is provided with two bearings for supporting the rotating shaft of the wheel pair, and the rotating shaft of the wheel pair is in running fit with the V-shaped block through the bearings.

4. The wheel set tread global detection device according to claim 1, wherein: the wheel pair rotation driving mechanism further comprises a servo motor, and the servo motor is arranged on the motor bracket; every the screw rod of second slip table module all is connected with a first T type steering gear, two through a second transmission shaft first T type steering gear is connected with second T type steering gear transmission respectively through a first transmission shaft, the input of second T type steering gear through a connecting axle with servo motor's output shaft transmission is connected.

5. The wheel set tread global detection device according to claim 1, wherein: the rail car movement mechanism further comprises a driving mechanism for driving the rail car to roll along the detection guide rail, the driving mechanism comprises a first belt wheel fixing support and a second belt wheel fixing support, a first synchronous belt wheel and a fourth stepping motor for driving the first synchronous belt wheel to rotate are mounted on the first belt wheel fixing support, a second synchronous belt wheel is mounted on the second belt wheel fixing support, and synchronous belts are wound on the first synchronous belt wheel and the second synchronous belt wheel; the rail car is fixedly provided with a car body base, the car body base is fixedly provided with a third synchronous belt wheel, the third synchronous belt wheel is meshed with the synchronous belt, and the third synchronous belt wheel cannot rotate relative to the car body base.

6. The wheel set tread global detection device according to claim 5, wherein: the third slip table module is driven by the second step motor, the fifth slip table module is driven by the third step motor, the fourth slip table module is driven by the fourth step motor, the first slip table module is driven by the first step motor, the first step motor the second step motor the third step motor the fourth step motor with the first step motor is connected with step motor driver group electricity respectively, step motor driver group pass through the PLC controller with the industrial computer electricity is connected.

7. The wheel set tread global detection device according to claim 1, wherein: the hydraulic three-jaw chuck is positioned between the displacement sensing module and the laser profile sensing module; when the hydraulic three-jaw chuck is used for clamping the rotating shaft of the wheel pair, the sliding direction of the sliding block of the fifth sliding table module is parallel to the radial direction of the wheel pair.

8. The wheel set tread global detection device according to claim 1, wherein: the rail car is provided with a handrail.

Technical Field

The invention relates to the technical field of rail transit detection, in particular to a wheel set tread global detection device.

Background

The train wheel set belongs to a key part of a running part of a railway vehicle, and in the running process of the railway vehicle, the wheel set often faces complicated mountain-shaped landforms, bears huge cargo throughput, complicated people flow carrying capacity, complicated rain and snow weather environments and the like, so that serious abrasion between the wheel set tread and a steel rail often occurs, and therefore in order to guarantee safe operation of the railway vehicle, regular maintenance and repair are required to be carried out on the service state of the train wheel set.

At present, the detection mode of the wheel set mainly depends on manual measurement, and the defects of large workload, high labor intensity, low detection efficiency and the like exist. Of course, handheld optical detection equipment is also available in the market, but only characteristic parameters of wheel sets in local small regions can be measured, and global measurement cannot be performed, and even key characteristic parameters of wear regions of wheel sets are easily lost. In view of the short plates existing in wheel set tread detection, the invention provides a wheel set tread global detection device based on multiple sensors, aiming at improving the existing wheel set detection device.

Disclosure of Invention

The invention aims to provide a wheel set tread global detection device, which is used for solving the problems in the prior art and improving the detection efficiency of the wheel set tread.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a wheel set tread global detection device, which comprises a wheel set lifting mechanism, a wheel set rotation driving mechanism, a rail car movement mechanism and a sensing measurement mechanism, wherein the wheel set lifting mechanism is arranged on the wheel set; the wheel set lifting mechanism is positioned between the wheel set rotation driving mechanism and the rail car movement mechanism;

the wheel set lifting mechanism comprises an electric hydraulic lifting platform and two V-shaped blocks which are arranged on the top surface of the electric hydraulic lifting platform and used for supporting a rotating shaft of a wheel set, and the rotating shaft of the wheel set is in rotating fit with the V-shaped blocks;

the wheel set rotation driving mechanism comprises a bottom plate and two supporting wheel units, each supporting wheel unit comprises a second sliding table module fixedly arranged on the bottom plate, a first sliding table module fixedly connected with a sliding block of the second sliding table module and a mounting bracket fixedly connected with a sliding block of the first sliding table module, a driven wheel is mounted on one mounting bracket, and a driving wheel and a speed reduction motor capable of driving the driving wheel to rotate are mounted on the other mounting bracket;

the rail car movement mechanism comprises a rail car, a fourth sliding table module fixedly arranged on the rail car, a sensor support frame fixedly connected with a sliding block of the fourth sliding table module, and a hydraulic three-jaw chuck rotatably connected with the sensor support frame, wherein the hydraulic three-jaw chuck is used for clamping one end of a rotating shaft of the wheel pair, and the rail car can roll along a detection rail;

the sensing measurement mechanism comprises a displacement sensing module and a laser contour sensing module, the displacement sensing module and the laser contour sensing module respectively comprise a fifth sliding table module fixedly arranged on the sensor support frame, a sliding block connecting piece fixedly connected with a sliding block of the fifth sliding table module, a third sliding table module fixedly arranged on the sliding block connecting piece and a sensor support fixedly arranged on a sliding block of the third sliding table module, a probe displacement sensor is fixedly arranged on the sensor support in the displacement sensing module, a laser contour sensor is fixedly arranged on the sensor support in the laser contour sensing module, and the probe displacement sensor and the laser contour sensor can be opposite to the tread of the wheel pair;

the probe displacement sensor and the laser profile sensor are respectively and electrically connected with an industrial personal computer; the axial of drive wheel the axial from the driving wheel the slip direction of the slider of second slip table module the slip direction of the slider of fourth slip table module reaches the slip direction of the slider of third slip table module all with the axial direction parallel of the pivot of wheel pair, detect orbital length direction the slip direction of the slider of first slip table module with the slip direction of the slider of fifth slip table module with the axial vertical of the pivot of wheel pair.

Preferably, the vehicle-mounted detection device further comprises a wheel pair rail, the wheel pair can roll along the wheel pair rail, and the wheel pair rail is parallel to the detection rail.

Preferably, each V-shaped block is provided with two bearings for supporting the rotating shaft of the wheel set, and the rotating shaft of the wheel set is in running fit with the V-shaped block through the bearings.

Preferably, the wheel pair rotation driving mechanism further comprises a servo motor, and the servo motor is mounted on the motor support; every the screw rod of second slip table module all is connected with a first T type steering gear, two through a second transmission shaft first T type steering gear is connected with second T type steering gear transmission respectively through a first transmission shaft, the input of second T type steering gear through a connecting axle with servo motor's output shaft transmission is connected.

Preferably, the rail car movement mechanism further comprises a driving mechanism for driving the rail car to roll along the detection guide rail, the driving mechanism comprises a first belt wheel fixing support and a second belt wheel fixing support, a first synchronous belt wheel and a fourth stepping motor for driving the first synchronous belt wheel to rotate are mounted on the first belt wheel fixing support, a second synchronous belt wheel is mounted on the second belt wheel fixing support, and a synchronous belt is wound on the first synchronous belt wheel and the second synchronous belt wheel; the rail car is fixedly provided with a car body base, the car body base is fixedly provided with a third synchronous belt wheel, the third synchronous belt wheel is meshed with the synchronous belt, and the third synchronous belt wheel cannot rotate relative to the car body base.

Preferably, the third slip table module is driven by a second step motor, the fifth slip table module is driven by a third step motor, the fourth slip table module is driven by a fourth step motor, the first slip table module is driven by a first step motor, the second step motor, the third step motor, the fourth step motor and the first step motor are respectively electrically connected with a step motor driver group, and the step motor driver group is electrically connected with the industrial personal computer through a PLC controller.

Preferably, the hydraulic three-jaw chuck is positioned between the displacement sensing module and the laser profile sensing module; when the hydraulic three-jaw chuck is used for clamping the rotating shaft of the wheel pair, the sliding direction of the sliding block of the fifth sliding table module is parallel to the radial direction of the wheel pair.

Preferably, the rail car is provided with an armrest.

Compared with the prior art, the invention has the following technical effects:

the wheel set tread overall detection device improves the detection efficiency of the wheel set tread. The wheel set tread global detection device overcomes the defect of tread information loss caused by wheel set tread local detection in the existing non-contact detection, and realizes the full tread measurement of the wheel set tread. Compared with the manual detection of the wheel set tread, the device adopts automatic measurement, the operation is simple and flexible, and the measurement precision and the detection efficiency are obviously improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first structural schematic diagram of a wheel set tread global detection device according to the present invention;

FIG. 2 is a second schematic structural view of the wheel set tread global detection device of the present invention;

FIG. 3 is a schematic partial structural diagram I of the wheel set tread global detection device according to the present invention;

FIG. 4 is a schematic view of a partial structure of the wheel set tread global detection device of the present invention;

FIG. 5 is a schematic view of a part of the structure of the wheel set tread global detection device according to the present invention;

FIG. 6 is a schematic view of a part of the structure of the wheel set tread global detection device according to the present invention;

FIG. 7 is a schematic diagram of a partial structure of the wheel set tread global detection device of the present invention;

wherein: 100. wheel set tread global detection device; 1. a first sliding table module; 2. a first stepper motor; 3. a first slipway module connecting plate; 4. a second sliding table module; 5. a first T-shaped steering gear; 6. a quincuncial coupler; 7. a first drive shaft; 8. a motor bracket; 9. a servo motor; 10. a second T-shaped steering gear; 11. a second drive shaft; 12. a coupling; 13. mounting a bracket; 14. a reduction motor; 15. a drive wheel; 16. a bearing; 17. a V-shaped block; 18. a second stepping motor; 19. a third sliding table module; 20. a sensor holder; 21. a probe displacement sensor; 22. a third step motor; 23. a slider connection; 24. a hydraulic three-jaw chuck; 25. a fourth stepping motor; 26. a first synchronous belt wheel; 27. a first belt wheel fixing support; 28. a fifth stepping motor; 29. a fourth sliding table module; 30. a fourth slipway module connecting plate; 31. a second belt wheel fixing bracket; 32. a rail car; 33. a sensor support frame; 34. a fifth sliding table module; 35. a laser profile sensor; 36. an electro-hydraulic lifting table; 37. a base plate; 38. a base plate support; 39. a bearing seat; 40. a driven wheel; 41. a stepper motor driver set; 42. a PLC controller; 43. an industrial personal computer; 44. a vehicle body base; 45. a rail wheel; 46. a second synchronous belt wheel; 47. a cylindrical sleeve; 48. a ball bearing; 49. a cylindrical connector; 50. an electric hydraulic cylinder; 51. a synchronous belt; 52. a third synchronous belt wheel; 53. a wheel-set rail; 54. and detecting the track.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

The invention aims to provide a wheel set tread global detection device, which is used for solving the problems in the prior art and improving the detection efficiency of the wheel set tread.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 7: the embodiment provides a wheel set tread global detection device 100, which comprises a wheel set lifting mechanism, a wheel set rotation driving mechanism, a rail car movement mechanism and a sensing measurement mechanism; the wheel set lifting mechanism is positioned between the wheel set rotating driving mechanism and the rail car moving mechanism.

The wheel set lifting mechanism comprises an electric hydraulic lifting platform 36 and two V-shaped blocks 17 which are arranged on the top surface of the electric hydraulic lifting platform 36 and used for supporting rotating shafts of wheel sets, and the rotating shafts of the wheel sets are in running fit with the V-shaped blocks 17; as shown in fig. 7, an electric hydraulic cylinder 50 is disposed in the electric hydraulic lifting platform 36, and the electric hydraulic lifting platform 36 is a mature device, and the structure and the specific working principle thereof are not described in detail in this embodiment. Each V-shaped block 17 is provided with two bearings 16 for supporting the rotating shaft of the wheel pair, the two bearings 16 on the V-shaped block 17 are respectively positioned at two sides of the rotating shaft of the wheel pair, and the rotating shaft of the wheel pair is in running fit with the V-shaped block 17 through the bearings 16.

Referring to fig. 1 to 3, the wheel pair rotation driving mechanism includes a bottom plate 37 and two supporting wheel units, the bottom plate 37 is supported by a bottom plate support 38, the supporting wheel unit includes a second sliding table module 4 fixedly arranged on the bottom plate 37, a first sliding table module 1 fixedly connected with a sliding block of the second sliding table module 4 and a mounting bracket 13 fixedly connected with a sliding block of the first sliding table module 1, the first sliding table module 1 is fixedly connected with a sliding block of the second sliding table module 4 through a first sliding table module connecting plate 3, a driven wheel 40 is arranged on one mounting bracket 13, a driving wheel 15 and a reduction motor 14 capable of driving the driving wheel 15 to rotate are arranged on the other mounting bracket 13, the driven wheel 40 is arranged on the mounting bracket 13 through a bearing seat 39, and the driven wheel 40 is in rotation fit with the bearing seat 39 through a bearing; the wheel pair rotation driving mechanism also comprises a servo motor 9, and the servo motor 9 is arranged on the motor bracket 8; the screw rod of every second slip table module 4 all is connected with a first T type steering gear 5 through a second transmission shaft 11, second transmission shaft 11 is connected with the output of first T type steering gear 5 through plum blossom shaft coupling 6, second transmission shaft 11 passes through shaft coupling 12 and is connected with the screw rod of second slip table module 4, two first T type steering gears 5 are connected with the transmission of second T type steering gear 10 through a first transmission shaft 7 respectively, the input of second T type steering gear 10 is connected with the output shaft transmission of servo motor 9 through a connecting axle.

The rail car movement mechanism comprises a rail car 32, a fourth sliding table module 29 fixedly arranged on the rail car 32, a sensor support frame 33 fixedly connected with a sliding block of the fourth sliding table module 29 and a hydraulic three-jaw chuck 24 rotatably connected with the sensor support frame 33, a handrail is arranged on the rail car 32, four rail wheels 45 which are in rolling fit with the detection rail 54 are arranged at the bottom of the rail car 32, the sensor support frame 33 is fixedly connected with a sliding block of the fourth sliding table module 29 through a fourth sliding table module connecting plate 30, a cylindrical connecting piece 49 is fixedly arranged at one end, close to the sensor support frame 33, of the hydraulic three-jaw chuck 24, a cylindrical sleeve 47 is fixedly arranged on the sensor support frame 33 corresponding to the cylindrical connecting piece 49, the cylindrical connecting piece 49 is rotatably connected with the cylindrical sleeve 47 through a ball bearing 48, the hydraulic three-jaw chuck 24 is used for clamping one end of a rotating shaft of the wheel pair, and the rail car 32 can roll along the detection rail 54; the rail car movement mechanism further comprises a driving mechanism for driving the rail car 32 to roll along the detection guide rail, the driving mechanism comprises a first belt wheel fixing support 27 and a second belt wheel fixing support 31, a first synchronous belt wheel 26 and a fourth stepping motor 25 for driving the first synchronous belt wheel 26 to rotate are mounted on the first belt wheel fixing support 27, a second synchronous belt wheel 46 is mounted on the second belt wheel fixing support 31, and a synchronous belt 51 is wound on the first synchronous belt wheel 26 and the second synchronous belt wheel 46; the rail car 32 is fixedly provided with a car body base 44, the car body base 44 is fixedly provided with a third synchronous pulley 52, the third synchronous pulley 52 is meshed with a synchronous belt 51, and the third synchronous pulley 52 cannot rotate relative to the car body base 44.

The sensing measurement mechanism comprises a displacement sensing module and a laser contour sensing module, the displacement sensing module and the laser contour sensing module respectively comprise a fifth sliding table module 34 fixedly arranged on a sensor support frame 33, a sliding block connecting piece 23 fixedly connected with a sliding block of the fifth sliding table module 34, a third sliding table module 19 fixedly arranged on the sliding block connecting piece 23 and a sensor support 20 fixedly arranged on a sliding block of the third sliding table module 19, a probe displacement sensor 21 is fixedly arranged on the sensor support 20 in the displacement sensing module, a laser contour sensor 35 is fixedly arranged on the sensor support 20 in the laser contour sensing module, and both the probe displacement sensor 21 and the laser contour sensor 35 can be opposite to the tread of the wheel set; the probe displacement sensor 21 and the laser profile sensor 35 are respectively electrically connected with an industrial personal computer 43;

the hydraulic three-jaw chuck 24 is positioned between the displacement sensing module and the laser profile sensing module; when the hydraulic three-jaw chuck 24 is used for clamping the rotating shaft of the wheel set, the sliding direction of the sliding block of the fifth sliding table module 34 is parallel to the radial direction of the wheel set.

The axial of drive wheel 15, the axial of follow driving wheel 40, the slip direction of the slider of second slip table module 4, the slip direction of the slider of fourth slip table module 29 and the slip direction of the slider of third slip table module 19 all are parallel with the axial of the pivot of wheel pair, detect the length direction of track 54, the slip direction of the slider of first slip table module 1 and the slip direction of the slider of fifth slip table module 34 and the axial of the pivot of wheel pair are perpendicular. The third sliding table module 19 is driven by the second stepping motor 18, the fifth sliding table module 34 is driven by the third stepping motor 22, the fourth sliding table module 29 is driven by the fourth stepping motor 25, the first sliding table module 1 is driven by the first stepping motor 2, the second stepping motor 18, the third stepping motor 22, the fourth stepping motor 25 and the first stepping motor 2 are respectively electrically connected with the stepping motor driver group 41, the stepping motor driver group 41 is electrically connected with the industrial personal computer 43 through the PLC 42, and the reduction motor 14 and the servo motor 9 are also respectively electrically connected with the industrial personal computer 43. The slip table module is present electronic slip table promptly, no longer gives unnecessary details to the structure and the concrete theory of operation of slip table module in this embodiment.

The wheel set tread overall detection device 100 of the embodiment further comprises a wheel set rail 53, the wheel set can roll along the wheel set rail 53, and the wheel set rail 53 is parallel to the detection rail 54; and the wheelset lifting mechanism is disposed between the two rails of the wheelset track 53 to facilitate supporting the middle of the axle of the wheelset via the two V-blocks 17 to lift the wheelset.

The specific use process of the wheel set tread global detection device 100 of the embodiment is as follows:

(1) wheel pair lifting: the wheel set to be detected is moved to a detection position along the steel rail and aligned with a marking line at the position to be detected, the PLC 42 is controlled by the industrial personal computer 43 to output signals to control the electric hydraulic lifting platform 36 to ascend, and the wheel set is lifted up through the V-shaped block 17 to be separated from the contact surface of the steel rail.

(2) The railcar 32 reaches the predetermined detection position: the PLC 42 transmits a pulse signal to the stepping motor driver group 41 to control the fourth stepping motor 25 to drive the first synchronous belt wheel 26, so as to drive the synchronous belt 51 and the rail car 32 to move to a preset detection position, and the position of the rail car 32 is finely adjusted manually through the handrail, so that the hydraulic three-jaw chuck 24 is coaxial with the rotating shaft of the wheel pair;

(3) sensor reaching the predetermined detection position: the rail car 32 is provided with a fourth sliding table module 29, and the fifth stepping motor 28 drives the fourth sliding table module 29 to perform feed motion along the axial direction of the wheel pair; the sensor support frame 33 is installed on the fourth sliding table module 29 through the fourth sliding table module connecting plate 30, the hydraulic three-jaw chuck 24 is fixed on the sensor support frame 33, so that the hydraulic three-jaw chuck 24 can feed along the axial direction of the axle of the wheel pair and is in contact with shaft necks at two ends of the axle of the wheel pair, and the industrial personal computer 43 is used for controlling the hydraulic three-jaw chuck 24 to clamp the axle of the wheel pair; the fifth sliding table module 34 is driven by the third stepping motor 22, so that the laser profile sensor 35 arranged on the sliding block connecting piece 23 moves along the radial direction of the wheel set, and decelerates and stops at a position 180-200 mm away from the wheel set tread. The probe displacement sensor 21 is arranged on the driving sensor bracket 20, the probe displacement sensor 21 is just contacted with the wheel set tread, and the probe displacement sensor 21 at the moment is marked as 0 position.

(4) The initial measurement stage of the sensor: at the moment, the industrial personal computer 43 controls the laser contour sensor 35 to start to perform preliminary measurement on the wheel set tread in the nearest area, then the industrial personal computer 43 starts to read tread data detected by the laser contour sensor 35, displays the measured single tread contour line, and judges whether the laser contour sensor 35 reaches a correct detection position according to the integrity of the single tread contour line; at the moment, the position of the wheel set base circle is determined according to a first frame of picture measured by the laser profile sensor 35, the third sliding table module 19 is driven by the second stepping motor 18 to enable the probe displacement sensor 21 to move to the wheel set tread base circle, manual fine adjustment is conducted, and the spring part in the probe displacement sensor 21 has the micro-compression amount of 2-3 mm.

(6) Wheel set rotation driving stage: the servo motor 9 drives the second sliding table module 4 to move along the axial direction close to the wheel pair; meanwhile, the first sliding table module 1 is driven by the first stepping motor 2, so that the driving wheel 15 and the driven wheel 40 are respectively in pressing contact with the treads. Then the driving wheel 15 is driven to rotate by the speed reducing motor 14, so as to drive the wheel pair to rotate, wherein the driven wheel 40 serves as a follow-up wheel to play a role in stable supporting and positioning.

(7) And (3) formal measurement stage: the wheel pair rotation driving mechanism driving wheel 15 rotates, the laser profile sensor 35 and the probe displacement sensor 21 start to perform tread parameter detection, and then the industrial personal computer 43 performs real-time reading and analysis calculation of detection data.

(8) And (3) a processing stage after the measurement is finished: when the wheel pair completes one-circle rotation, the laser profile sensor 35 and the probe displacement sensor 21 finish detection, the speed reducing motor 14 stops rotating, and the second sliding table module 4 is driven by the servo motor 9 to move along the direction far away from the wheel pair tread; the fifth sliding table module 34 is driven by the third stepping motor 22 to move in the direction away from the wheel set tread, the sensing and measuring mechanism is in an open state, and the electro-hydraulic lifting table 36 starts to descend to place the wheel set at the initial position of the steel rail.

In the description of the present invention, it should be noted that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.