A driving positioning device for wheel set round runout detection

Abstract

The present application relates to wheelset detection technical field, particularly to a kind of drive positioning device for wheelset round runout detection, first support assembly and second support assembly are oppositely arranged on platform to provide support for wheelset, first positioning assembly is arranged on first support assembly, and first positioning assembly is flexibly contacted with the center axis first end surface of wheelset, second support assembly is arranged on second support assembly, and second positioning assembly is rigidly contacted with the center axis second end surface of wheelset.Through first positioning assembly, second positioning assembly is axially positioned to wheelset, and using flexible and rigid combined contact form, effectively limit the axial movement of wheelset in the process of rotation, while avoiding the occurrence of card stagnation in the process of rotary motion, solve the problem of large measurement error of wheelset end surface round runout using traditional drive positioning device, improve wheelset detection precision, reduce wheelset quality risk.

Description

Technical Field

[0001] This invention relates to the field of wheelset detection technology, and in particular to a drive positioning device for detecting wheelset runout. Background Technology

[0002] With the development and construction of high-speed rail technology, the development and research of related supporting products have also gradually expanded. The safe operation of high-speed rail is related to the life safety of every passenger, and the research and development of its related components requires strict control over production quality. Among them, wheelsets are one of the important components of rail vehicles. When wheelsets roll along the track, they also undergo longitudinal, lateral sliding and spin motion relative to the track. In addition, wheelsets bear complex random loads from the track and the vehicle's primary suspension. They are the components with the highest load frequency and the most complex failure modes in the rail vehicle structure. Therefore, wheelsets must be kept in good condition; otherwise, it will seriously affect driving safety.

[0003] Because the circular runout index of wheelsets is very important, it needs to be measured with high precision. Currently, the traditional drive positioning device used to measure the axial circular runout of wheelsets has a large measurement error, which reduces the accuracy of wheelset testing and cannot ensure the quality of wheelsets. Summary of the Invention

[0004] (1) Technical problems to be solved

[0005] This invention provides a drive positioning device for wheelset circular runout detection, which solves the technical problem of large measurement error in measuring the axial circular runout of wheelsets using traditional drive positioning devices.

[0006] (2) Technical solution

[0007] An embodiment of the present invention provides a drive positioning device for detecting wheelset runout, comprising: a first support component, a second support component, a first positioning component, a second positioning component, and a platform. The first support component and the second support component are disposed opposite to each other on the platform to provide support for the wheelset. The first positioning component is disposed on the first support component and is in flexible contact with a first end face of the central axis of the wheelset. The second support component is disposed on the second support component and is in rigid contact with a second end face of the central axis of the wheelset.

[0008] Furthermore, both the first support assembly and the second support assembly include a roller bearing housing, a driving roller, a driven roller, and a driver. The driving roller and the driven roller are disposed opposite to each other on the roller bearing housing, and the shaft of the driving roller is connected to the driver.

[0009] Furthermore, the driver includes a servo motor, a planetary reducer, an adapter shaft, and a housing. The housing is disposed on one side of the roller bearing seat, the servo motor is disposed on the housing and connected to the planetary reducer, and the planetary reducer is connected to and drives the adapter shaft to rotate.

[0010] Furthermore, the adapter shaft is connected to the shaft of the drive roller via gear transmission.

[0011] Furthermore, an encoder is provided on the first support component and / or the second support component. The encoder is mounted on the housing and connected to the shaft of the driven roller via a coupling.

[0012] Furthermore, both the first positioning component and the second positioning component include a base, a slide rail, a slider, a baffle, a fixing device, and a clamping device. The two slide rails are disposed opposite to each other on the base. The clamping device is movably connected to the slide rail through the slider and is limited by the fixing device. The two baffles are respectively located at both ends of the base to prevent the slider from disengaging.

[0013] Furthermore, the base is provided with a groove for mounting the slide rail, the slide rail is partially embedded in the groove, one side of the slide rail abuts against the inner wall of the groove, and the other side of the slide rail abuts against the embedded inclined pressure block.

[0014] Furthermore, the fixing device includes a sliding plate, a fixing screw, and a tightening screw. The sliding plate is connected to the base via a dovetail groove or a T-groove structure. The fixing screw has a vertical thread that passes through the sliding plate to fix the sliding plate. The tightening screw has a horizontal thread that passes through the sliding plate to abut against the tightening device for limiting its position.

[0015] Furthermore, the clamping device includes a clamping shaft, a combined bearing, and a mounting base, with the first end of the clamping shaft connected to the mounting base via the combined bearing.

[0016] Furthermore, the clamping device of the first positioning component also includes a fixed sleeve, a spring, and a clamping ring. The second end of the clamping shaft is provided with a shoulder. The fixed sleeve is fitted onto the shoulder and connected to the clamping ring. The inner diameter of the clamping ring is smaller than the outer diameter of the shoulder. The spring is provided inside the shoulder. The spring acts on the fixed sleeve and moves the fixed sleeve away from the shoulder.

[0017] (3) Beneficial effects

[0018] In summary, this invention uses a first positioning component and a second positioning component to axially position the wheelset, employing a combination of flexible and rigid contact to effectively limit axial movement during wheelset rotation and prevent jamming. The drive mechanism of the first and second support components utilizes an integrated shaft and wheel design, significantly reducing assembly errors and simplifying manufacturing. This device is simple to operate, safe, and reliable, solving the problem of large measurement errors in wheelset end-face runout using traditional drive positioning devices, thus improving wheelset inspection accuracy and reducing wheelset quality risks. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a drive positioning device for wheelset circular runout detection according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A structural schematic diagram of the first support component and / or the second support component;

[0022] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure;

[0023] Figure 4 yes Figure 1 A schematic diagram of the structure of the first positioning component;

[0024] Figure 5 yes Figure 4 A schematic diagram of the side view structure;

[0025] In the diagram: 1. First support assembly; 2. Second support assembly; 3. First positioning assembly; 4. Second positioning assembly; 5. Wheelset; 6. Platform; 10. Roller bearing housing; 11. Driving roller; 12. Driven roller; 13. Servo motor; 14. Planetary reducer; 15. Adapter shaft; 16. Housing; 17. Encoder; 18. Coupling; 30. Base; 31. Slide rail; 32. Slider; 33. Baffle; 34. Inclined pressure block; 35. Slide plate; 36. Fixing screw; 37. Tightening screw; 38. Tightener; 381. Tightening shaft; 382. Combined bearing; 383. Mounting base; 384. Fixing sleeve; 385. Spring; 386. Pressure ring; 387. Shoulder. Detailed Implementation

[0026] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments, and any modifications, substitutions and improvements to the parts, components and connection methods are covered without departing from the spirit of the present invention.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Please refer to Figure 1 This invention provides a drive positioning device for detecting wheelset runout, comprising: a first support component 1, a second support component 2, a first positioning component 3, a second positioning component 4, and a platform 6. The first support component 1 and the second support component 2 are disposed opposite each other on the platform 6 to provide support for the wheelset 5. The first positioning component 3 is disposed on the first support component 1 and is in flexible contact with the first end face of the central axis of the wheelset 5. The second support component 2 is disposed on the second support component 2, and the second positioning component 4 is in rigid contact with the second end face of the central axis of the wheelset 5. The wheelset 5 is axially positioned by the first positioning component 3 and the second positioning component 4, and the combination of flexible and rigid contact effectively limits the axial movement of the wheelset 5 during rotation, while avoiding jamming during rotation. This device is simple to operate, safe and reliable, and solves the problem of large measurement errors in the circular runout measurement of the wheelset 5 end face using traditional drive positioning devices, improving the detection accuracy of the wheelset 5 and reducing the quality risk of the wheelset 5.

[0029] Please refer to Figure 2 and Figure 3 In some embodiments, both the first support assembly 1 and the second support assembly 2 include a roller bearing housing 10, a driving roller 11, a driven roller 12, and a driver. The driving roller 11 and the driven roller 12 are disposed opposite to each other on the roller bearing housing 10, forming a V-shaped support structure. The central axis of the wheelset 5 is disposed on the driving roller 11 and the driven roller 12. The rotation axis of the driving roller 11 is connected to the driver, which drives the driving roller 11 to rotate the central axis. The driven roller 12 assists in rolling. The drive of the first support assembly 1 and the second support assembly 2 adopts an integrated shaft and wheel design, which greatly reduces assembly errors and reduces processing difficulty.

[0030] In some embodiments, the driver includes a servo motor 13, a planetary reducer 14, an adapter shaft 15, and a housing 16. The housing 16 is disposed on one side of the roller bearing seat 10. The servo motor 13 is disposed on the housing 16 and connected to the planetary reducer 14. The planetary reducer 14 is connected to and drives the adapter shaft 15 to rotate. The servo motor 13 is decelerated by the planetary reducer 14 and transmits torque to the adapter shaft 15 for output, which can effectively configure the speed and achieve precise control.

[0031] In some embodiments, the adapter shaft 15 and the shaft of the drive roller 11 are connected by gear transmission, or by synchronous belt transmission, chain transmission, or other transmission methods.

[0032] In some embodiments, an encoder 17 is provided on the first support component 1 and / or the second support component 2. The encoder 17 is disposed on the housing 16 and connected to the shaft of the driven roller 12 via a coupling 18. The encoder 17 is used to detect the rotational speed, thereby adapting to the servo motor 13 to form a closed-loop control and effectively monitoring whether the central shaft slips or other phenomena occur.

[0033] Please refer to Figure 4 and Figure 5 In some embodiments, both the first positioning component 3 and the second positioning component 4 include a base 30, a slide rail 31, a slider 32, a baffle 33, a fixing device, and a clamping device 38. The two slide rails 31 are disposed opposite each other on the base 30. The clamping device 38 is movably connected to the slide rail 31 via the slider 32. The position of the clamping device 38 can be adjusted according to the length of the central shaft, so that the clamping device 38 contacts the end face of the central shaft. The fixing device limits the clamping device, ensuring that the clamping device 38 is tightly pressed against the end face of the central shaft. The two baffles 33 are located at opposite ends of the base 30 to prevent the slider 32 from disengaging.

[0034] In some embodiments, the base 30 is provided with a groove for mounting the slide rail 31. The slide rail 31 is partially embedded in the groove. One side of the slide rail 31 abuts against the inner wall of the groove, and the other side is abutted by an embedded inclined pressure block 34, which can ensure the straightness of the slide rail 31 and improve the installation accuracy of the slide rail 31.

[0035] In some embodiments, the fixing device includes a sliding plate 35, a fixing screw 36, and a tightening screw 37. The sliding plate 35 is connected to the base 30 via a dovetail or T-slot structure, meaning the sliding plate 35 can move linearly relative to the base 30 but cannot vertically detach from the base 30. The fixing screw 36 has a vertical thread that passes through the sliding plate 35 to fix it. Specifically, the fixing screw 36 is tightened vertically downwards, with one end abutting against the base 30, causing the sliding plate 35 to rise and contact the base 30, locking it in place through friction. The tightening screw 37 has a horizontal thread that passes through the sliding plate 35 to abut against the tightening device 38 for limiting its position. Fixing the sliding plate 35 with the fixing screw 36 achieves coarse positioning of the tightening device 38, while fine-tuning the tightening screw 37 allows for displacement of the tightening device 38, facilitating fine positioning of the tightening device 38. When the clamping device 38 of the first positioning component 3 and the second positioning component 4 clamps the central shaft, the preset pressure is a specific value calculated by the above structure, which makes it easier to achieve.

[0036] In some embodiments, the clamping device 38 includes a clamping shaft 381, a combined bearing 382, ​​and a mounting base 383. The first end of the clamping shaft 381 is connected to the mounting base 383 through the combined bearing 382. In the second positioning assembly 4, the end face of the clamping shaft 381 abuts against the end face of the central shaft, i.e., in rigid contact. Then, the clamping shaft 381 is rotated by the rotation of the central shaft. The combined bearing 382 is used to reduce the resistance to the rotation of the clamping shaft 381.

[0037] In some embodiments, the clamping device 38 of the first positioning component 3 further includes a fixing sleeve 384, a spring 385, and a clamping ring 386. A shoulder 387 is provided at the second end of the clamping shaft 381. The fixing sleeve 384 is fitted onto the shoulder 387 and connected to the clamping ring 386. The inner diameter of the clamping ring 386 is smaller than the outer diameter of the shoulder 387, preventing the fixing sleeve 384 from detaching from the shoulder 387. The fixing sleeve 384 can slide relative to the shoulder 387. The spring 385 is provided inside the shoulder 387, acting on the fixing sleeve 384 and causing it to move away from the shoulder 387. When the end face of the fixing sleeve 384 abuts against the end face of the central shaft, due to the buffering amount (i.e., flexible contact), combined with rigid contact, it effectively controls the constraint on the central shaft, thus effectively limiting the axial movement of the wheelset 5 during rotation and preventing jamming during rotation.

[0038] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the figures. Furthermore, for the sake of brevity, detailed descriptions of known methods and techniques are omitted here.

[0039] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art without departing from the scope of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A drive positioning device for wheelset roundness detection, characterized in that, The application relates to a wheelset positioning device, which comprises a first supporting assembly, a second supporting assembly, a first positioning assembly, a second positioning assembly and a platform, the first supporting assembly and the second supporting assembly are oppositely arranged on the platform to provide support for a wheelset, the first positioning assembly is arranged on the first supporting assembly and is in flexible contact with a first end surface of a central shaft of the wheelset, the second supporting assembly is arranged on the second supporting assembly and is in rigid contact with a second end surface of the central shaft of the wheelset. The first positioning assembly and the second positioning assembly each comprise a base, sliding rails, sliding blocks, baffle plates, fixing devices and a tensioner, the two sliding rails are oppositely arranged on the base, the tensioner is movably connected with the sliding rails through the sliding blocks and is limited by the fixing devices, and the two baffle plates are respectively arranged at two ends of the base to prevent the sliding blocks from being separated. The tensioner comprises a tensioning shaft, a combined bearing and a mounting seat, a first end of the tensioning shaft is connected with the mounting seat through the combined bearing. The tensioner of the first positioning assembly further comprises a fixing sleeve, a spring and a compression ring, a second end of the tensioning shaft is provided with a shaft shoulder, the fixing sleeve is sleeved on the shaft shoulder and is connected with the compression ring, an inner diameter of the compression ring is smaller than an outer diameter of the shaft shoulder, the spring is arranged in the shaft shoulder and acts on the fixing sleeve to make the fixing sleeve away from the shaft shoulder. The first supporting assembly and the second supporting assembly each comprise a roller bearing seat, a driving roller, a driven roller and a driver, the driving roller and the driven roller are oppositely arranged on the roller bearing seat, and a rotating shaft of the driving roller is connected with the driver.

2. The driving positioning device for wheel set round run-out detection according to claim 1, characterized in that, The driver comprises a servo motor, a planetary reducer, a connecting shaft and a machine shell, the machine shell is arranged on one side of the roller bearing seat, the servo motor is arranged on the machine shell and is connected with the planetary reducer, and the planetary reducer is connected with and drives the connecting shaft to rotate.

3. The drive positioning device for wheel set round runout detection according to claim 2, characterized in that, The connecting shaft is connected with the rotating shaft of the driving roller through gear transmission.

4. The driving positioning device for wheel set round run-out detection according to claim 3, characterized in that, An encoder is arranged on the first supporting assembly and / or the second supporting assembly, the encoder is arranged on the machine shell and is connected with a rotating shaft of the driven roller through a shaft coupling.

5. The drive positioning device for wheel set round runout detection according to claim 4, characterized in that, A groove for arranging the sliding rails is arranged on the base, the sliding rails are partially embedded in the groove, one side of the sliding rail is in abutment with an inner wall of the groove, and the other side of the sliding rail is in abutment with an embedded inclined pressing block.

6. The drive positioning device for wheel set round runout detection according to claim 1, characterized in that, The fixing device comprises a sliding plate, fixing screws and tensioning screws, the sliding plate is connected with the base through dovetail grooves or T-shaped groove structures, the fixing screws are vertically screwed through the sliding plate to fix the sliding plate, and the tensioning screws are horizontally screwed through the sliding plate to abut against the tensioner for limiting.

7. The drive positioning device for wheel set round runout detection according to claim 1, characterized in that, ​

Images