Automatic measuring machine for wheel set and brake disc

Abstract

The invention provides a wheel set and brake disc automatic measuring machine, and belongs to the technical field of measuring devices. The device comprises a positioning device for axially positioning a wheel set reaching a measurement station; the lifting driving device is used for lifting the positioned wheel set to a measurement position; the wheel position value measuring part is used for measuring the wheel position value of the wheel set; an inside distance measuring part for measuring the inside distance of the wheel set; the brake disc measuring part is used for measuring geometric parameters of the brake disc; and the control device is used for controlling actions of the positioning device, the lifting driving device, the wheel position value measuring part, the inner side distance measuring part and the brake disc measuring part so as to realize automatic measurement of the wheel pair and the brake disc. According to the invention, unmanned, high-precision and high-efficiency measurement of the parameters of the wheel set and the brake disc can be realized, and the technological requirements of advanced repair of the motor train unit are met.

Description

Technical Field

[0001] This invention relates to the field of measuring device technology, and in particular to an automatic measuring machine for wheelsets and brake discs. Background Technology

[0002] Advanced maintenance of high-speed trains is a high-level inspection and maintenance operation performed after the trains have reached a specific mileage or time limit. It typically covers Level 3, Level 4, and Level 5 maintenance, with different levels corresponding to different maintenance cycles and contents. During advanced maintenance, when replacing wheels or brake discs, wheelset pressing is required. This involves using specialized pressing techniques and equipment to precisely press the axle into the center hole of the wheel or brake disc. After pressing, key parameters such as the inner distance of the wheelset, wheel position value, wheel position difference, disc position value, disc spacing, and center distance of the disc friction surfaces must be measured.

[0003] Currently, wheelset pressing, brake disc pressing, and post-press data measurement (such as inner distance, wheel position, and disc position) still rely on manual operation. Measurement requires repeatedly rotating the wheelset and collecting data every 120° along the circumference. This process not only requires frequent wheelset movement and tool changes but also necessitates multiple cross-measurements by several people, making it time-consuming, labor-intensive, and inefficient.

[0004] To effectively improve railway transport safety and enhance the quality of wheel well maintenance, it is urgently necessary to introduce automated measurement equipment. This equipment should be able to automatically and accurately measure all the aforementioned items, significantly improving operational efficiency while minimizing the interference of human factors on the measurement results. Summary of the Invention

[0005] In view of this, in order to solve the above-mentioned shortcomings of the current wheelset pressing, brake disc pressing and data measurement after pressure testing that rely on manual operation, the present invention provides an automatic wheelset and brake disc measuring machine, which can realize unmanned, high-precision and high-efficiency measurement of wheelset and brake disc parameters, and meet the process requirements of high-level maintenance of EMU trains.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic measuring machine for wheelsets and brake discs, comprising: A positioning device is used to axially position the wheelset that has arrived at the measurement station; The lifting drive unit is used to lift the positioned wheelset to the measurement position; The wheel position measurement unit includes a wheel position value up-and-down movement cylinder, a sensor measurement cylinder, and a wheel position value sensor, used to measure the wheel position value of the wheelset; The inner distance measuring unit includes an inner distance servo electric cylinder, an inner distance sensor, and an inner distance measuring element, used to measure the inner distance of the wheelset; The brake disc measuring unit includes a brake disc measuring lateral servo electric cylinder, a brake disc measuring up and down servo electric cylinder, and a laser measuring instrument, used to measure the geometric parameters of the brake disc; The control device is used to control the operation of the positioning device, lifting drive device, wheel position measurement unit, inner distance measurement unit and brake disc measurement unit to realize automatic measurement of wheelset and brake disc.

[0007] Preferably, the wheel position measurement unit further includes a wheel position lateral movement cylinder for driving the wheel position sensor to move laterally to the measurement position.

[0008] Preferably, the inner distance measuring unit further includes an inner distance vertical movement cylinder and an inner distance horizontal movement cylinder, used to adjust the position of the inner distance measuring element to adapt to the measurement requirements of different wheelsets.

[0009] Preferably, the laser measuring instrument of the brake disc measuring unit is connected to the slide rail pair through the brake disc moving seat, so as to realize the vertical and horizontal movement of the laser measuring instrument.

[0010] Preferably, the lifting drive device can drive the wheelset to rotate 120°, enabling multiple measurements of the wheelset's circumferential direction.

[0011] Preferably, the control device can adjust the moving distance of the inner distance servo electric cylinder according to the new or repair information of the wheelset, so that the inner distance sensor reaches a position 60mm or 45mm away from the apex of the wheel flange.

[0012] Preferably, the measurement data from the wheel position sensor, the inner distance sensor, and the laser measuring instrument can be transmitted to the control device to achieve automatic data recording and analysis.

[0013] Preferably, the positioning device can automatically reset after completing the axial positioning of the wheelset to avoid affecting subsequent measurement operations.

[0014] Preferably, the wheel position measurement unit, the inner distance measurement unit, and the brake disc measurement unit can automatically reset after the measurement is completed, waiting for the measurement of the next wheelset.

[0015] Preferably, the control device can interface with the MES system to achieve the sharing and management of measurement data.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) Significantly improved measurement reliability and safety: By integrating positioning devices, lifting drive devices, multi-parameter automatic measurement units, and control devices, a fully automated measurement process for wheelset and brake disc parameters is achieved, replacing the manual operations of frequently pushing wheelsets, changing measuring tools, and cross-checking. This eliminates measurement errors caused by human factors and ensures the consistency and reliability of measurement results. Combined with computerized network management, it meets the process standards for advanced maintenance of EMU trains and effectively improves the safety of railway vehicle operation.

[0017] (2) High measurement accuracy: Employing high-precision measuring instruments (such as wheel position sensors, inner distance sensors, and laser measuring instruments), combined with precise positioning via servo control and pneumatic drive, the measurement error is ≤0.02mm, significantly improving the quality of wheelset and brake disc maintenance. This avoids subjective biases from manual measurements, ensuring that the measurement accuracy of key parameters (such as inner distance, wheel position, and brake disc geometry) meets industry standards.

[0018] (3) Strong compatibility and versatility: It is compatible with all models of EMU wheelsets (new / repaired) and supports automatic switching of measurement parameters. The inner distance measurement can be automatically adjusted to the position of 60mm or 45mm at the top of the wheel flange according to the type of wheelset (new / repaired), without the need to change special measuring tools. It meets the multi-parameter measurement needs of wheelsets and brake discs in advanced EMU maintenance, realizes "one machine for multiple uses", and reduces equipment investment costs.

[0019] (4) Outstanding data management capabilities: Supports integration with the MES system to achieve digital management of measurement data. Measurement data is automatically uploaded, stored and analyzed, which facilitates subsequent data traceability and process optimization, solves the problems of easy loss and difficulty in sharing manually recorded data, and improves the informatization level of the maintenance process.

[0020] (5) Measurement efficiency is greatly improved: The fully automatic measurement process significantly shortens the measurement time of a single wheelset, with a measurement time of ≤3 minutes for a single wheelset. This is more than 3 times more efficient than manual measurement (which takes more than 10 minutes), meeting the batch testing needs of high-level maintenance of EMU trains and improving the overall capacity of the maintenance line.

[0021] (6) Reduce manpower and increase efficiency and reduce costs: Reduce reliance on on-site workers, reduce at least one worker, and reduce labor costs. Avoid equipment damage or personnel safety hazards caused by manual operation and improve the safety of the working environment.

[0022] In summary, this invention enables unmanned, high-precision, and high-efficiency measurement of wheelset and brake disc parameters, meeting the process requirements of advanced maintenance of high-speed trains. Attached Figure Description

[0023] Figure 1 This is the front view of the assembly drawing of the present invention; Figure 2This is the left view of the final assembly drawing. Figure 3 This is a structural schematic diagram of the assembly drawing. Figure 4 This is a schematic diagram of the wheel position measurement unit; Figure 5 This is the front view of the wheel position measurement unit; Figure 6 This is the front view of the inner distance measuring section; Figure 7 This is the left view of the inner distance measuring section; Figure 8 This is a right view of the inner distance measuring unit; Figure 9 This is a schematic diagram of the brake disc measuring section; Figure 10 This is the front view of the brake disc measuring section; Figure 11 This is a left view of the brake disc measuring section; In the diagram: 1. Column; 2. Crossbeam; 3. Left wheel position measurement unit; 4. Zeroing device; 5. Left inner distance measurement unit; 6. Left brake disc measurement unit; 7. Right brake disc measurement unit; 8. Right inner distance measurement unit; 9. Right wheel position measurement unit; 10. Wheel ejection device; 11. Wheel track; 12. Positioning device; 13. Lifting drive device; 14. Wheelset; 15. Wheel position vertical movement cylinder; 16. Wheel position vertical movement cylinder connecting seat; 17. First slide rail pair; 18. Upper and lower support seats; 19. Second slide rail pair; 20. Wheel position lateral movement cylinder; 21. Wheel position transition plate; 22. Third slide rail pair; 23. Sensor measurement cylinder connecting seat; 24. Sensor measurement cylinder; 25. Sensor measurement cylinder head connecting seat; 26. Wheel position sensor connecting seat; 27. Wheel position sensor; 28. Wheel position vertical movement... 29. Cylinder head connecting seat; 30. Wheel position value lateral movement cylinder head connecting seat; 31. First inner distance connecting seat; 32. Fourth slide rail pair; 33. Second inner distance connecting seat; 34. Inner distance up and down movement cylinder; 35. Third inner distance connecting seat; 36. Inner distance servo electric cylinder; 37. Fifth slide rail pair; 38. First inner distance measuring plate; 39. Sixth slide rail pair; 40. Inner distance sensor connecting seat; 41. Inner distance sensor; 42. Inner distance lateral movement cylinder; 43. Inner distance positioning block; 44. Brake disc measurement lateral movement servo electric cylinder; 45. Seventh slide rail pair; 46. Brake disc measurement up and down servo electric cylinder; 47. Brake disc measurement base plate; 48. Eighth slide rail pair; 49. Brake disc moving seat; 50. Laser measuring instrument; 51. Second inner distance measuring plate; 52. Wheel position value measuring base plate. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] This invention provides an automatic measuring machine for wheelsets and brake discs, comprising: Positioning device 12 is used to axially position the wheelset 14 that has arrived at the measurement station; The lifting drive device 13 is used to lift the positioned wheelset 14 to the measurement position; The wheel position value measuring unit includes a wheel position value up-and-down movement cylinder 15, a sensor measuring cylinder 24, and a wheel position value sensor 27, which are used to measure the wheel position value of the wheelset 14; The inner distance measuring unit includes an inner distance servo electric cylinder 35, an inner distance sensor 40, and an inner distance measuring element 41, which are used to measure the inner distance of the wheelset 14. The brake disc measuring unit includes a brake disc measuring transverse servo electric cylinder 44, a brake disc measuring up and down servo electric cylinder 46, and a laser measuring instrument 50, used to measure the geometric parameters of the brake disc. The control device is used to control the operation of the positioning device 12, the lifting drive device 13, the wheel position measurement unit, the inner distance measurement unit, and the brake disc measurement unit, so as to realize the automatic measurement of the wheelset 14 and the brake disc.

[0028] In this embodiment of the invention, by integrating the positioning device 12, the lifting drive device 13, the multi-parameter measuring unit, and the control device, fully automatic measurement of the wheelset 14 and the brake disc is achieved. This replaces the manual operations of frequently pushing the wheelset, changing measuring tools, and cross-checking, significantly improving measurement efficiency. The measurement time for a single wheelset is ≤3 minutes, reducing measurement errors caused by human factors, improving measurement accuracy and reliability, ensuring the safe operation of railway vehicles, and meeting the process standards for advanced maintenance of high-speed trains.

[0029] In this invention, the wheel position measurement unit further includes a wheel position lateral movement cylinder 20, which drives the wheel position sensor 27 to move laterally to the measurement position. In this embodiment, by driving the wheel position sensor 27 laterally with the wheel position lateral movement cylinder 20, the sensor is precisely adjusted to the measurement position of the wheelset 14, avoiding positional deviations caused by manual adjustment, improving the accuracy of wheel position measurement, and ensuring the consistency and reliability of wheel position data.

[0030] In this invention, the inner distance measuring unit further includes an inner distance vertical movement cylinder 33 and an inner distance horizontal movement cylinder 42, used to adjust the position of the inner distance measuring element 41 to adapt to the measurement requirements of different wheelsets. In this embodiment, the inner distance vertical movement cylinder 33 and the inner distance horizontal movement cylinder 42 are used to adjust the position of the inner distance measuring element 41 to adapt to the rim vertex distance requirements of different wheelsets (new / repaired), improving the adaptability and versatility of inner distance measurement, eliminating the need to change to special measuring tools, saving operation time, and improving measurement efficiency.

[0031] In this invention, the laser measuring instrument 50 of the brake disc measuring unit is connected to the slide rail pair via the brake disc moving seat 49, enabling the laser measuring instrument 50 to move vertically and laterally. In this embodiment, the laser measuring instrument 50 achieves multi-dimensional movement via the brake disc moving seat 49 and the slide rail pair, flexibly reaching different measurement positions of the brake disc (disc position value, disc spacing, etc.), realizing comprehensive measurement of the brake disc's geometric parameters. The non-contact measurement method avoids damage to the brake disc surface, ensures brake disc performance, and improves the accuracy and efficiency of brake disc measurement.

[0032] In this invention, the lifting drive device 13 can drive the wheelset to rotate 120°, enabling multiple measurements of the wheelset 14 in the circumferential direction. In this embodiment, the lifting drive device 13 automatically drives the wheelset to rotate 120°, replacing the manual operation of pushing the wheelset to rotate, reducing manual labor intensity, ensuring the accuracy of each rotation angle (avoiding angular deviations from manual rotation), improving the consistency of multi-directional measurements, increasing measurement efficiency, and meeting the batch inspection requirements of high-level maintenance of EMU trains.

[0033] In this invention, the control device can adjust the moving distance of the inner distance servo electric cylinder 35 according to the wheelset's new or repair information, so that the inner distance measuring element 41 reaches a position 60mm or 45mm from the rim apex. In this embodiment, the control device adjusts the inner distance position according to the wheelset type (new / repaired), realizing rapid switching of measurement parameters without manual adjustment, ensuring that the measurement parameters meet process standards, and improving the adaptability and accuracy of inner distance measurement.

[0034] In this invention, the measurement data from the wheel position sensor 27, the inner distance sensor 40, and the laser measuring instrument 50 can be transmitted to the control device, enabling automatic data recording and analysis. In this embodiment, the measurement data is automatically transmitted to the control device for recording and analysis, achieving digital management of the measurement data. This facilitates subsequent data traceability and process optimization, reduces errors from manual recording, improves the controllability of maintenance quality, supports comparative analysis of multi-round measurement data, and optimizes wheelset maintenance strategies.

[0035] In this invention, the positioning device 12 can automatically reset after completing the axial positioning of the wheelset, avoiding interference with subsequent measurement operations. In this embodiment, the positioning device automatically resets after completing the axial positioning, avoiding interference with subsequent lifting and measurement operations, ensuring the smoothness of the measurement process, reducing equipment downtime, and improving overall measurement efficiency.

[0036] In this invention, the wheel position measurement unit, inner distance measurement unit, and brake disc measurement unit can automatically reset after measurement, awaiting the measurement of the next wheel pair. In this embodiment, the automatic reset of each measurement unit after measurement quickly prepares for the measurement of the next wheel pair, improves the continuous operation capability of the equipment, reduces manual intervention, lowers operational complexity, and improves overall measurement efficiency.

[0037] In this invention, the control device 12 can interface with the MES system to achieve the sharing and management of measurement data. In this embodiment, the interface between the control device and the MES system enables the sharing and integrated management of measurement data, facilitating production planning optimization, maintenance progress tracking, and quality control, thereby improving the overall production management efficiency of the enterprise and aligning with the development trend of intelligent manufacturing.

[0038] The present invention provides an exemplary implementation of the above-described technical solution.

[0039] like Figure 1 As shown, the automatic measuring machine for wheelsets and brake discs provided by the present invention has the following components: Wheel position measurement unit: Left wheel position measurement unit 3 and right wheel position measurement unit 9 have the same structure.

[0040] The wheel position value vertical movement cylinder connecting seat 16 and the first slide rail pair 17 are connected to the column 1 by screws. The wheel position value vertical movement cylinder 15 is connected to the wheel position value vertical movement cylinder connecting seat 16. The wheel position value vertical movement cylinder head connecting seat 28 is connected to the upper and lower support seats 18 by screws. The upper and lower support seats 18 are connected to the first slide rail pair 17 by screws. The second slide rail pair 19 is connected to the upper and lower support seats 18 by screws. The wheel position value transition plate 21 is connected to the second slide rail pair 19 by screws. The third slide rail pair 22 and the sensor measurement... The cylinder connecting seat 23 and the wheel position value lateral movement cylinder head connecting seat are connected to the wheel position value transition plate 21 by screws. The wheel position value measuring base plate 52 is connected to the third slide rail pair 22 by screws. The wheel position value lateral movement cylinder 20 is connected to the upper and lower support seats 18 by screws. The sensor measuring cylinder 24 is connected to the wheel position value transition plate 21 by screws. The wheel position value sensor connecting seat 26 and the sensor measuring cylinder head connecting seat 25 are connected to the wheel position value measuring base plate 52 by screws. The wheel position value sensor 27 is connected to the wheel position value sensor connecting seat 26.

[0041] Inner distance measuring unit: left inner distance measuring unit 5 and right inner distance measuring unit 8, which have the same structure.

[0042] The first inner distance connecting seat 30 is connected to the crossbeam 2 by screws. The fourth slide rail pair 31 and the inner distance up-and-down moving cylinder 33 are connected to the first inner distance connecting seat 30 by screws. The second inner distance connecting seat 32 is connected to the fourth slide rail pair 31 by screws. The third inner distance connecting seat 34 is connected to the second inner distance connecting seat 32 by screws. The inner distance servo electric cylinder 35 and the fifth slide rail pair 36 are connected to the third inner distance connecting seat 34 by screws. The first inner distance measuring plate 37 is connected to the fifth slide rail pair 36 by screws. The sixth slide rail assembly 38 is connected to the first inner distance measuring plate 37 by screws. The second inner distance measuring plate 51 is connected to the sixth slide rail assembly 38 by screws. The inner distance transverse cylinder 42 is connected to the second inner distance measuring plate 51 by screws. The inner distance sensor connecting seat 39 is connected to the first inner distance measuring plate 37 by screws. The inner distance sensor 40 is connected to the inner distance sensor connecting seat 39. The inner distance measuring element 41 is connected to the second inner distance measuring plate 51 by screws. The inner distance positioning block 43 is connected to the first inner distance measuring plate 37 by screws.

[0043] Brake disc measuring section: Left brake disc measuring section 6 and right brake disc measuring section 7 have the same structure.

[0044] The brake disc measuring transverse servo electric cylinder 44 and the seventh slide rail pair 45 are connected to the crossbeam 2 by screws. The brake disc measuring base plate 47 is connected to the seventh slide rail pair 45 by screws. The brake disc measuring up and down servo electric cylinder 46 and the eighth slide rail pair 48 are connected to the brake disc measuring base plate 47 by screws. The brake disc moving seat 49 is connected to the eighth slide rail pair 48 by screws. The laser measuring instrument 50 is connected to the brake disc moving seat 49 by screws.

[0045] The working principle is as follows: Step (1): When the wheelset arrives at the measurement station, the positioning device 12 performs axial positioning of the wheelset. After positioning, the positioning device 12 resets, and the lifting drive device 13 lifts the wheelset to the measurement position. The wheel position value measuring unit moves down to the measurement position driven by the wheel position value up-down moving cylinder 15. The sensor measuring cylinder 24 drives the wheel position value sensor 27 to move forward. When it reaches the measurement position, the sensor takes a value. At the same time, the brake disc measuring lateral servo electric cylinder 44 drives the brake disc measuring unit to move laterally a certain distance, and the brake disc measuring up-down servo electric cylinder 46 moves downward a certain distance. The laser measuring instrument 50 takes a value. Simultaneously, the inner distance measuring unit descends a certain distance so that the inner distance positioning block 43 contacts the wheel flange. Based on information such as whether the wheelset is newly manufactured or under repair, the inner distance servo electric cylinder 35 drives the fifth slide rail pair 36, the first inner distance measuring plate 37, the second inner distance measuring plate 51, the inner distance lateral movement cylinder 42, the inner distance sensor connecting seat 39, the inner distance sensor 40, and the inner distance measuring element 41 to move to a position 60 or 45 mm away from the apex of the wheel flange. The inner distance lateral movement cylinder 42 drives the inner distance measuring element 41 to move laterally to the measuring position, and the inner distance sensor 40 takes the value.

[0046] Step (2): After the measurement is completed, the wheel position measurement unit, the inner distance measurement unit, and the brake disc measurement unit are reset. After all are reset, the lifting drive device 13 drives the wheelset to rotate 120°. Step (1) is repeated for the second measurement. After the measurement is completed, the wheel position measurement unit, the inner distance measurement unit, and the brake disc measurement unit are reset. After all are reset, the lifting drive device 13 drives the wheelset to rotate 120°. Step (1) is repeated for the third measurement. After the measurement is completed, the wheel position measurement unit, the inner distance measurement unit, and the brake disc measurement unit are reset. After all are reset, the entire measurement is completed. The wheel ejection device pushes the wheelset out of the equipment and waits for the measurement of the next wheelset.

[0047] The above are merely preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. An automatic measuring machine for wheelsets and brake discs, characterized in that, include: A positioning device is used to axially position the wheelset that has arrived at the measurement station; The lifting drive unit is used to lift the positioned wheelset to the measurement position; The wheel position measurement unit includes a wheel position value up-and-down movement cylinder, a sensor measurement cylinder, and a wheel position value sensor, used to measure the wheel position value of the wheelset; The inner distance measuring unit includes an inner distance servo electric cylinder, an inner distance sensor, and an inner distance measuring element, used to measure the inner distance of the wheelset; The brake disc measuring unit includes a brake disc measuring lateral servo electric cylinder, a brake disc measuring up and down servo electric cylinder, and a laser measuring instrument, used to measure the geometric parameters of the brake disc; The control device is used to control the operation of the positioning device, lifting drive device, wheel position measurement unit, inner distance measurement unit and brake disc measurement unit to realize automatic measurement of wheelset and brake disc.

2. The automatic measuring machine for wheelsets and brake discs according to claim 1, characterized in that, The wheel position measurement unit also includes a wheel position lateral movement cylinder, which is used to drive the wheel position sensor to move laterally to the measurement position.

3. The automatic measuring machine for wheelsets and brake discs according to claim 1, characterized in that, The inner distance measuring unit also includes an inner distance vertical movement cylinder and an inner distance horizontal movement cylinder, used to adjust the position of the inner distance measuring element to adapt to the measurement requirements of different wheelsets.

4. The automatic measuring machine for wheelsets and brake discs according to claim 1, characterized in that, The laser measuring instrument of the brake disc measuring unit is connected to the slide rail pair through the brake disc moving seat, realizing the vertical and horizontal movement of the laser measuring instrument.

5. An automatic wheelset and brake disc measuring machine according to claim 1, characterized in that, The lifting drive device can drive the wheelset to rotate 120°, enabling multiple measurements of the wheelset's circumferential direction.

6. An automatic measuring machine for wheelsets and brake discs according to claim 1, characterized in that, The control device can adjust the moving distance of the inner distance servo electric cylinder according to the information of the new or repaired wheelset, so that the inner distance sensor reaches a position 60mm or 45mm away from the apex of the wheel flange.

7. An automatic wheelset and brake disc measuring machine according to claim 1, characterized in that, The measurement data from the wheel position sensor, inner distance sensor, and laser measuring instrument can be transmitted to the control device to achieve automatic data recording and analysis.

8. An automatic wheelset and brake disc measuring machine according to claim 1, characterized in that, The positioning device can automatically reset after completing the axial positioning of the wheelset, thus avoiding affecting subsequent measurement operations.

9. An automatic measuring machine for wheelsets and brake discs according to claim 1, characterized in that, The wheel position measurement unit, inner distance measurement unit, and brake disc measurement unit can automatically reset after the measurement is completed, waiting for the measurement of the next wheel pair.

10. An automatic measuring machine for wheelsets and brake discs according to any one of claims 1-9, characterized in that, The control device can interface with the MES system to enable the sharing and management of measurement data.

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