A vertical testing device for a wheel diameter measuring micrometer.

Abstract

This application discloses a vertical testing device for a wheel diameter measuring micrometer, including an auxiliary positioning component, a two-dimensional adjustment mechanism, and a gauge micrometer. The gauge micrometer is used to measure the micrometer being tested. The auxiliary positioning component includes a reference plate, a reference base mounted on the reference plate, a testing positioning plate, and a fixing component. A gauge slot is formed between the reference base and the testing positioning plate, and the gauge slot is used to hold the movable end reading device of the wheel diameter gauge. The fixing component is used to fix the movable end reading device in the gauge slot, ensuring a tight fit between the wheel diameter gauge positioning surface and the testing positioning plate. The high-precision machining of the reference plate in this application ensures the overall stability of the device, solves the problem of poor compatibility of testing devices in the prior art, adapts to the calibration needs of wheel diameter gauges of different specifications, and improves testing accuracy and efficiency.

Description

Technical Field

[0001] This application belongs to the field of wheel diameter measuring device testing technology, and specifically relates to a vertical testing device for wheel diameter micrometers. Background Technology

[0002] As a critical running gear component of locomotives and rolling stock, the diameter difference and rolling roundness of railway wheelsets have a significant impact on vehicle traction performance, braking anti-skid control, and other safe operating indicators. Wheel diameter measuring instruments, as core measuring tools for controlling wheel diameter, must strictly adhere to the latest national metrological verification regulations for traceability to ensure the accuracy and reliability of their values.

[0003] Existing wheel diameter gauge inspection technologies have several shortcomings. In terms of operation, traditional methods require disassembling the reading end of the gauge frame and the micrometer device, which contradicts field requirements. Repeated disassembly and reassembly not only lead to variations in the indicated value but also cause wear on the connecting structure. Regarding measurement accuracy, the point contact between the planar probe and the workpiece introduces contact errors, and the lack of an axis alignment auxiliary device makes it difficult to guarantee measurement accuracy. In terms of adaptability and portability, existing tooling cannot accommodate the ±0.3mm tolerance difference in the main scale thickness of wheel diameter gauges from different manufacturers, and the device is bulky and difficult to meet the needs of mobile field inspection. Utility Model Content

[0004] The purpose of this application is to provide a vertical testing device for a wheel diameter micrometer. This addresses the problem of poor compatibility in the testing devices mentioned in the background art, allowing it to adapt to the calibration needs of wheel diameter gauges of different specifications, while also improving testing accuracy and efficiency.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, a vertical inspection device for a wheel diameter measuring tool micrometer is provided, comprising an auxiliary positioning component, a two-dimensional adjustment mechanism disposed on the auxiliary positioning component, and a measuring tool micrometer disposed on the two-dimensional adjustment mechanism;

[0007] The micrometer device of the inspection fixture achieves two-dimensional displacement adjustment through the two-dimensional adjustment mechanism, which is used to enable the micrometer device of the inspection fixture to measure the micrometer device being inspected;

[0008] The auxiliary positioning component includes a reference plate, a reference base mounted on the reference plate, a detection and positioning plate, and a fixing component.

[0009] A fixture slot is formed between the reference base and the detection positioning plate, and the fixture slot is used to place the reading device of the movable end of the wheel diameter ruler.

[0010] The reference plate is used to support the two-dimensional adjustment mechanism and the micrometer device, thereby improving the stability of the detection device.

[0011] The fixing component is used to fix the movable end reading device in the gauge slot, so as to make the wheel diameter ruler positioning surface fit tightly with the detection positioning plate.

[0012] In one possible implementation, the fixing component includes at least two first fixing members;

[0013] The first fixing member passes through one end of the reference base and is used to abut against the movable end reading device of the wheel diameter ruler, so that the side wall of the movable end reading device of the wheel diameter ruler abuts against the detection positioning plate.

[0014] In one possible implementation, a second fixing member is also provided on the reference base, the second fixing member being used to press the bottom wall of the wheel diameter ruler movable end reading device against the gauge slot.

[0015] In one possible implementation, the two-dimensional adjustment mechanism includes a Y-axis adjustable displacement device and an X-axis adjustable displacement device;

[0016] The Y-axis adjustable displacement device includes a vertical track, a vertical block, and a vertical fixing component;

[0017] The vertical track is set on the reference plate, the vertical block is slidably set on the vertical track, the vertical block is fixed on the vertical track by the vertical fastener, and the X-axis adjustable displacement device is set on the vertical block.

[0018] In one possible implementation, the X-axis adjustable displacement device includes a horizontal track, a horizontal block, and a horizontal fixing component;

[0019] The horizontal track is mounted on the vertical block, the horizontal block is slidably mounted on the horizontal track, the horizontal block is fixed on the horizontal track by the horizontal fixing member, and the micrometer device of the inspection tool is mounted on the horizontal block.

[0020] In one possible implementation, the travel range of the horizontal block is adapted to different wheel diameter gauges.

[0021] In one possible implementation, a coaxial retainer is also provided between the micrometer of the gauge and the micrometer being tested.

[0022] In one possible implementation, the coaxial retainer includes a coaxial sleeve for aligning the micrometer of the gauge with the axis of the micrometer being inspected.

[0023] In one possible implementation, the gauge block specifications between the micrometer device of the gauge and the micrometer being tested include, but are not limited to, 5.12mm, 10.24mm, 15.36mm, 20mm, and 25mm, for calibration of indication error in different ranges.

[0024] In one possible implementation, the reference plate, the reference base, and the detection positioning plate are integrally connected.

[0025] Compared with the prior art, this application has the following beneficial effects:

[0026] This application provides a vertical testing device for a wheel diameter measuring micrometer. This vertical testing device, through a fixture slot formed by a reference plate, a reference base, and a testing positioning plate, accurately positions the reading device at the movable end of the wheel diameter gauge. The high-precision machining of the reference plate ensures the stability of the entire testing device. The fixing components ensure a tight fit between the wheel diameter gauge's positioning surface and the testing positioning plate, preventing displacement of the wheel diameter gauge during testing and guaranteeing testing reliability. The design of the two-dimensional adjustment mechanism allows for precise adjustment of the fixture micrometer in two dimensions, enabling measurement of the micrometer at different positions. This solves the problem of poor compatibility in existing testing devices, adapting to the calibration needs of wheel diameter gauges of different specifications, while improving testing accuracy and efficiency.

[0027] In one possible implementation, precise adjustment ensures the correct relative position between the probe and the micro-device being tested during the inspection process, reducing measurement errors caused by positional deviations and thus improving the measurement accuracy of the micrometer's indication error. Furthermore, this structural design also exhibits good stability, maintaining the position of the micrometer on the fixture unchanged during inspection, ensuring the reliability of the inspection results.

[0028] In one possible implementation, by adjusting the position of the horizontal block, the micrometer device of the inspection fixture can be accurately aligned with the micrometers being inspected on wheel diameter gauges of different specifications, ensuring the smooth progress of the inspection work. This design greatly improves the versatility of the inspection device, reduces the need to change different tooling due to different wheel diameter gauge specifications, lowers inspection costs, and also improves inspection efficiency, enabling the inspection device to better meet the inspection needs in actual production.

[0029] In one possible implementation, the coaxial fastener allows for precise alignment of the axes of the two micrometers, significantly reducing alignment errors. This dramatically improves the measurement accuracy of the testing device, meeting the high-precision requirements of railway wheel diameter measurement, ensuring accurate and reliable traceability of wheel diameter gauge values, and providing strong support for the safe operation of railway wheelsets.

[0030] In one possible implementation, the integrated design of the reference plate, reference base, and detection positioning plate eliminates the assembly gaps and form and position errors of traditional assembled structures, improves the overall rigidity of the auxiliary positioning components, and reduces measurement deviations caused by component loosening during the detection process. Simultaneously, the integrated molding process reduces the number of parts and assembly steps, improves installation efficiency, and lowers maintenance costs due to component wear. Adaptability and stability are significantly enhanced, providing reliable reference support for the precise measurement of the two-dimensional adjustment mechanism and the micrometer device of the gauge. Attached Figure Description

[0031] Figure 1 A schematic diagram of the overall structure of a vertical testing device for a wheel diameter measuring micrometer provided in this application;

[0032] Figure 2 for Figure 1 Enlarged image.

[0033] The attached figures are labeled as follows: 1. Auxiliary positioning component; 11. Reference plate; 12. Reference base; 13. Detection positioning plate; 14. Fixing component; 15. First fixing member; 16. Second fixing member; 2. Two-dimensional adjustment mechanism; 3. Micrometer measuring device; 4. Micrometer to be detected; 41. Movable support frame; 411. Slide groove; 42. First sliding member; 43. Second sliding member; 5. Y-axis adjustable displacement device; 51. Vertical track; 52. Vertical block; 53. Vertical fixing member; 6. X-axis adjustable displacement device; 61. Horizontal track; 62. Horizontal block; 63. Horizontal fixing member; 7. Coaxial retainer; 8. Wheel diameter ruler movable end reading device. Detailed Implementation

[0034] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly defined. The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] like Figure 1 and Figure 2 As shown, this application discloses a vertical inspection device for a wheel diameter measuring instrument micrometer. The vertical inspection device for a wheel diameter measuring instrument micrometer may include an auxiliary positioning component 1, a two-dimensional adjustment mechanism 2 disposed on the auxiliary positioning component 1, and a gauge micrometer device 3 disposed on the two-dimensional adjustment mechanism 2.

[0041] The micrometer device 3 of the inspection fixture achieves two-dimensional displacement adjustment through the two-dimensional adjustment mechanism 2, which is used to enable the micrometer device 3 of the inspection fixture to measure the micrometer device 4 being inspected.

[0042] The auxiliary positioning component 1 includes a reference plate 11, a reference base 12 disposed on the reference plate 11, a detection positioning plate 13, and a fixing component 14.

[0043] Specifically, the reference plate 11 is made of high-strength aluminum alloy and its surface is precision ground, with a flatness error of no more than 0.005mm. It is used to provide a stable support platform for the two-dimensional adjustment mechanism 2 and the micrometer device 3.

[0044] A fixture slot is formed between the reference base 12 and the detection positioning plate 13. The fixture slot is used to place the wheel diameter ruler movable end reading device 8.

[0045] Optionally, the reference base 12 and the detection positioning plate 13 can be fixed to the reference plate 11 by bolts, or they can be connected as a whole, forming a gauge slot between them with a width that can be adapted to the thickness of various wheel diameter ruler movable end reading devices 8.

[0046] The fixing component 14 is used to fix the movable end reading device in the gauge slot, so as to make the wheel diameter ruler positioning surface fit tightly with the detection positioning plate 13.

[0047] In this embodiment, the wheel diameter measuring micrometer uses a vertical testing device. The gauge slot formed by the reference plate 11, reference base 12, and testing positioning plate 13 accurately positions the movable end reading device 8 of the wheel diameter gauge. The high-precision machining of the reference plate 11 ensures the stability of the entire testing device. The fixing component 14 ensures a tight fit between the wheel diameter gauge positioning surface and the testing positioning plate 13, preventing displacement of the wheel diameter gauge during testing and guaranteeing testing reliability. The design of the two-dimensional adjustment mechanism 2 allows the gauge micrometer 3 to be precisely adjusted in two dimensions, enabling measurement of the micrometer 4 at different positions. This solves the problem of poor compatibility in existing testing devices, adapting to the calibration requirements of wheel diameter gauges of different specifications, while improving testing accuracy and efficiency.

[0048] In one possible embodiment, the fixing component 14 may include at least two first fixing members 15.

[0049] The first fixing member 15 passes through one end of the reference base 12 and is used to abut against the movable end reading device 8 of the wheel diameter ruler, so that the side wall of the movable end reading device 8 of the wheel diameter ruler abuts against the detection positioning plate 13.

[0050] Specifically, the at least two first fasteners 15 of the fixing assembly 14 are two fastening bolts. The reference base 12 is provided with two threaded holes that match the bolts, and the positions of the threaded holes correspond to the side wall of the movable end reading device 8 of the wheel diameter gauge. The bolts pass through the threaded holes of the reference base 12, and a nylon abutment is installed at its front end. The surface of the abutment is treated with anti-slip material.

[0051] When the movable end reading device 8 of the wheel diameter gauge is placed in the fixture slot, tightening the bolts of the two first fixing parts 15 causes the nylon clamping block to press against the side wall of the movable end reading device 8 of the wheel diameter gauge, thereby fixing it in the fixture slot and ensuring that the side wall of the movable end reading device 8 of the wheel diameter gauge is pressed against the detection positioning plate 13.

[0052] In this embodiment, the fixing component 14 employs a design of two first fixing members 15, which can firmly fix the side wall of the movable end reading device 8 of the wheel diameter ruler, making the positioning of the movable end reading device 8 of the wheel diameter ruler within the gauge slot more accurate and stable. This fixing method effectively solves the problem of easy displacement of the wheel diameter ruler during the testing process in the prior art, ensuring a tight fit between the wheel diameter ruler positioning surface and the testing positioning plate 13, providing a reliable foundation for subsequent testing work, and thus improving the accuracy and consistency of the testing results.

[0053] In one possible embodiment, a second fixing member 16 is also provided on the reference base 12, the second fixing member 16 being used to press the bottom wall of the wheel diameter ruler movable end reading device 8 against the gauge slot.

[0054] Specifically, the vertical measuring device for the wheel diameter measuring instrument also includes a second fixing member 16 mounted on the reference base 12. The second fixing member 16 is an M8 bolt. A threaded hole is provided on the reference base 12 at the top position corresponding to the movable end reading device 8 of the wheel diameter gauge, and the bolt is installed in the threaded hole. A circular clamping plate is provided at the lower end of the bolt. The clamping plate has a diameter of 20mm, a thickness of 5mm, and is made of aluminum alloy.

[0055] After the movable end reading device 8 of the wheel diameter ruler is placed in the gauge slot, the bolt of the second fixing member 16 is rotated to move the clamping plate downward and press against the bottom wall of the movable end reading device 8 of the wheel diameter ruler, thereby further fixing it in the gauge slot and ensuring that the bottom wall of the movable end reading device 8 of the wheel diameter ruler presses against the gauge slot.

[0056] In this embodiment, the second fixing member 16 secures the movable end reading device 8 of the wheel diameter gauge from the bottom, and cooperates with the first fixing member 15 of the fixing assembly 14 to form a multi-directional fixation of the movable end reading device 8 of the wheel diameter gauge, further improving the stability of the wheel diameter gauge in the gauge slot. This multi-directional fixing method effectively prevents the movable end reading device 8 of the wheel diameter gauge from shifting or shaking vertically during the testing process, ensuring that the wheel diameter gauge maintains an accurate positioning state throughout the testing process. This not only improves the reliability of the testing device, but also reduces the testing error caused by inaccurate positioning of the wheel diameter gauge, making the testing results more accurate and meeting the high-precision requirements of railway wheel diameter measurement.

[0057] In one possible embodiment, the two-dimensional adjustment mechanism 2 may include a Y-axis adjustable displacement device 5 and an X-axis adjustable displacement device 6.

[0058] The Y-axis adjustable displacement device 5 may include a vertical track 51, a vertical block 52, and a vertical fixing member 53.

[0059] Specifically, the vertical block 52 is made of aluminum alloy and has a slider inside that matches the vertical track 51. The slider is equipped with ball bearings to reduce the friction when the vertical block 52 slides on the vertical track 51.

[0060] The vertical track 51 is fixed to the reference plate 11 by bolts, the vertical block 52 is slidably disposed on the vertical track 51, the vertical block 52 is fixed on the vertical track 51 by the vertical fixing member 53, and the X-axis adjustable displacement device 6 is disposed on the vertical block 52.

[0061] Optionally, the vertical fastener 53 is an M6 bolt, and the vertical block 52 has two through holes that match the bolt. When the vertical block 52 slides to the appropriate position, the vertical block 52 is fixed to the vertical track 51 by tightening the bolt.

[0062] In this embodiment, the design of the vertical track 51 and vertical block 52 of the Y-axis adjustable displacement device 5 allows the vertical block 52 to slide flexibly up and down on the vertical track 51. The vertical fixing member 53 can precisely fix the vertical block 52 in the desired position. This structural design can adapt to the differences in frame thickness of different wheel diameter rulers. For example, when the frame thickness of the wheel diameter ruler varies between 10mm and 30mm, adjusting the Y-axis adjustable displacement device 5 can maintain a suitable relative position between the micrometer device 3 and the micrometer device 4 being inspected in the vertical direction. The X-axis adjustable displacement device 6 allows the micrometer device 3 to be adjusted in the horizontal direction to meet the requirement that the distance from the probe center to the positioning surface is within the range of 70.0-70.4mm.

[0063] The design of this two-dimensional adjustment mechanism 2 effectively solves the problem of poor compatibility of the detection device in the existing technology. It can adapt to the differences in wheel diameter specifications produced by different manufacturers, and greatly improves the applicability and detection accuracy of the detection device.

[0064] In one possible embodiment, the X-axis adjustable displacement device 6 may include a horizontal track 61, a horizontal block 62, and a horizontal fixing member 63.

[0065] The horizontal track 61 is mounted on the vertical block 52, the horizontal block 62 is slidably mounted on the horizontal track 61, the horizontal block 62 is fixed on the horizontal track 61 by the horizontal fixing member 63, and the inspection tool micrometer 3 is mounted on the horizontal block 62.

[0066] Optionally, the horizontal rail 61 of the X-axis adjustable displacement device 6 is fixed to the side of the vertical block 52, and the length of the rail is 100mm.

[0067] The horizontal block 62 is made of aluminum alloy and has a T-slot at its bottom that matches the T-shaped guide rail. The horizontal block 62 is slidably connected to the horizontal rail 61 through the T-slot. The horizontal fixing component 63 consists of two M5 wing bolts, and the horizontal block 62 has two threaded holes that match the bolts.

[0068] When it is necessary to adjust the horizontal position of the micrometer device 3, loosen the wing bolt and push the horizontal block 62 to slide on the horizontal track 61. After adjusting to the appropriate position, tighten the wing bolt to fix the horizontal block 62 on the horizontal track 61. The micrometer device 3 is fixed to the top of the horizontal block 62 by bolts, and the central axis of its probe is perpendicular to the direction of the horizontal track 61.

[0069] In this embodiment, the structural design of the horizontal guide rail and horizontal block 62 of the X-axis adjustable displacement device 6 makes the sliding of the horizontal block 62 on the horizontal rail 61 smoother. Simultaneously, the wing bolts facilitate quick adjustment by the operator, improving the ease of operation of the testing device. By adjusting the X-axis adjustable displacement device 6, the horizontal position of the micrometer device 3 can be precisely adjusted, ensuring that the distance from the center of the probe to the positioning surface of the micrometer device 3 accurately meets the required range of 70.0-70.4 mm. This precise adjustment function ensures the correct relative position between the probe and the tested micrometer device 4 during the testing process, reducing measurement errors caused by positional deviations and thus improving the measurement accuracy of the micrometer device's indication error. Furthermore, this structural design also possesses good stability, maintaining the position of the micrometer device 3 during the testing process and ensuring the reliability of the testing results.

[0070] In one possible embodiment, the travel range of the horizontal block 62 is adapted to different wheel diameter gauges.

[0071] The travel range of the horizontal block 62 is designed based on parameters such as the thickness of the main scale and the frame thickness of different wheel diameter rulers. After researching and analyzing common wheel diameter ruler specifications on the market, the travel range of the horizontal block 62 on the horizontal track 61 is set to 0-50mm. The length of the horizontal track 61 is 50mm, and the maximum sliding distance of the horizontal block 62 on the horizontal track 61 is 50mm.

[0072] When dealing with wheel diameter gauges produced by different manufacturers, such as wheel diameter gauges with a main scale thickness of 15mm and a frame thickness of 20mm and wheel diameter gauges with a main scale thickness of 18mm and a frame thickness of 25mm, the position of the horizontal block 62 on the horizontal track 61 is adjusted so that the micrometer device 3 of the inspection tool can be accurately aligned with the position of the micrometer device 4 being inspected, thereby enabling the inspection of wheel diameter gauges of different specifications.

[0073] In this embodiment, the horizontal block 62 is designed to accommodate different wheel diameter gauges, effectively solving the problem of poor compatibility in existing testing devices. Wheel diameter gauges from different manufacturers vary significantly in specifications such as main scale thickness and frame thickness. In this embodiment, the horizontal block 62 has a travel range of 0-50mm, covering most wheel diameter gauge variations. By adjusting the position of the horizontal block 62, the micrometer device 3 can be accurately aligned with the micrometer device 4 of different wheel diameter gauges, ensuring smooth testing. This design greatly improves the versatility of the testing device, reduces the need to change tooling due to different wheel diameter gauge specifications, lowers testing costs, and improves testing efficiency, enabling the testing device to better meet the testing needs of actual production.

[0074] In one possible embodiment, a coaxial retainer 7 is also provided between the micrometer device 3 and the micrometer device 4 being tested.

[0075] Optionally, the coaxial retainer 7 is a hollow cylindrical body made of stainless steel, with its inner diameter matching the probe diameter of the micrometer device 3 and the micrometer device 4 being tested, for example, an inner diameter of 8 mm.

[0076] The cylinder has internal threads at both ends for threaded connection with the micrometer device 3 and the probe of the micrometer device 4 being tested. When testing is required, the coaxial retainer 7 is first installed on the probe of the micrometer device 3, and then the micrometer device 3 is moved so that the other end of the coaxial retainer 7 is fitted onto the probe of the micrometer device 4 being tested, thereby ensuring that the axes of the micrometer device 3 and the micrometer device 4 being tested are the same.

[0077] In this embodiment, the coaxial retainer 7 effectively ensures that the axis of the micrometer device 3 and the micrometer device 4 being tested are the same, solving the problem of large measurement errors caused by the lack of axis alignment auxiliary devices in the prior art. During the testing process, if the axes of the two micrometer devices do not coincide, a large alignment error will occur, affecting the accuracy of the measurement results. However, by connecting the coaxial retainer 7, the axes of the two micrometer devices can be accurately aligned, greatly reducing the alignment error. This significantly improves the measurement accuracy of the testing device, meeting the high-precision requirements of railway wheel diameter measurement, ensuring the accurate and reliable traceability of wheel diameter gauge values, and providing a strong guarantee for the safe operation of railway wheelsets.

[0078] In one possible embodiment, the coaxial retainer 7 includes a coaxial sleeve for aligning the micrometer device 3 with the axis of the micrometer device 4 being inspected.

[0079] Optionally, the coaxial retainer 7 includes a coaxial cylinder, which is a hollow cylinder open at both ends, made of brass, and has good wear resistance and stability. The inner diameter of the coaxial cylinder is determined according to the probe diameter of the micrometer device 3 and the micrometer device 4 being tested, for example, an inner diameter of 10mm, an outer diameter of 15mm, and a length of 30mm. The inner hole of the coaxial cylinder is precision machined, and its roundness error does not exceed 0.002mm. In use, the coaxial cylinder is fitted onto the probe of the micrometer device 3, and then the micrometer device 3 is moved so that the probe of the micrometer device 4 being tested is inserted into the other end of the coaxial cylinder. The inner hole of the coaxial cylinder guides and positions the two probes, thereby making the axis of the micrometer device 3 and the micrometer device 4 the same.

[0080] In this embodiment, the coaxial cylinder features a simple and practical design, effectively aligning the axes of the micrometer device 3 and the micrometer device 4 being inspected. The choice of brass material ensures the wear resistance and stability of the coaxial cylinder, allowing it to maintain good performance during long-term inspection work. High-precision machining of the coaxial cylinder's inner bore ensures accurate guidance and positioning of the two probes, thereby guaranteeing the consistency of the axes of the two micrometer devices. This design significantly reduces alignment errors during the inspection process, improving measurement accuracy and repeatability. Compared to existing technologies, the coaxial retainer 7 significantly improves the measurement accuracy of the inspection device, meeting higher precision inspection requirements, while also enhancing the reliability and stability of the inspection work.

[0081] In one possible embodiment, the gauge block specifications between the micrometer device 3 and the micrometer device 4 being tested may include, but are not limited to, 5.12mm, 10.24mm, 15.36mm, 20mm, and 25mm, for calibration of indication error in different ranges.

[0082] These gauge blocks are all made of high-precision steel, with a dimensional accuracy of ±0.001mm and a surface roughness Ra≤0.01μm. The gauge blocks are rectangular in shape, and the top and bottom surfaces of each gauge block are precision ground, with a flatness error of no more than 0.001mm.

[0083] When calibrating the indication error, first turn the knob of the micrometer device 3 to the maximum position so that the distance between the probes is 25mm. Then place a 25mm gauge block and read the value. Next, adjust the knob and place gauge blocks of 20mm, 15.36mm, 10.24mm and 5.12mm in sequence in a stair-step manner. After placing each gauge block, read the indication value of the micrometer device 3. By comparing it with the standard size of the gauge block, calculate the indication error of the micrometer device.

[0084] In this embodiment, multiple gauge blocks of various sizes are used for indication error calibration, covering the detection needs of different measurement ranges and ensuring accurate calibration of the micrometer's indication error throughout the entire measurement range. Existing technologies often use only a single or a few gauge blocks for calibration, failing to comprehensively reflect the performance of the micrometer under different measurement ranges. However, the multiple gauge blocks of 5.12mm, 10.24mm, 15.36mm, 20mm, and 25mm provided in this embodiment can calibrate multiple measurement points of the micrometer, thereby more comprehensively evaluating the indication error of the micrometer. This calibration method improves the accuracy and reliability of the detection, ensuring that the wheel diameter measuring instrument can accurately measure wheel diameter dimensions in actual use, providing stronger protection for the safe operation of railway wheelsets. Simultaneously, the use of multiple gauge blocks of various sizes complies with the requirements of national metrological verification regulations, making the detection work more standardized and regulated.

[0085] In one possible embodiment, the reference plate 11, the reference base 12, and the detection positioning plate 13 are integrally connected.

[0086] Optionally, the reference plate 11, reference base 12, and detection positioning plate 13 are all integrally machined from high-strength aluminum alloy using CNC milling technology. The overall flatness error is ≤0.005mm, and the perpendicularity error of each connecting surface is ≤0.01mm. The thickness of the reference plate 11 is 20mm.

[0087] In this embodiment, the integrated connection design of the reference plate 11, the reference base 12, and the detection positioning plate 13 eliminates the assembly gaps and form and position errors of the traditional assembled structure, improves the overall rigidity of the auxiliary positioning component 1, and reduces the measurement deviation caused by component loosening during the detection process. At the same time, the integrated molding process reduces the number of parts and assembly steps, improves installation efficiency, and reduces maintenance costs caused by part wear. The adaptability and stability are significantly enhanced, providing reliable reference support for the accurate measurement of the two-dimensional adjustment mechanism 2 and the micrometer device 3.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vertical detection device for a wheel diameter gauge micrometer device, characterized by comprising: a wheel diameter gauge micrometer device; a vertical detection device; and a wheel diameter gauge micrometer device detection unit. It includes an auxiliary positioning component (1), a two-dimensional adjustment mechanism (2) disposed on the auxiliary positioning component (1), and a gauge micrometer device (3) disposed on the two-dimensional adjustment mechanism (2); The micrometer device (3) of the inspection fixture achieves displacement adjustment in two dimensions through the two-dimensional adjustment mechanism (2), which is used to enable the micrometer device (3) of the inspection fixture to measure the micrometer device (4) being inspected; The auxiliary positioning component (1) includes a reference plate (11), a reference seat (12) disposed on the reference plate (11), a detection positioning plate (13), and a fixing component (14); A fixture slot is formed between the reference base (12) and the detection positioning plate (13), and the fixture slot is used to place the wheel diameter ruler movable end reading device (8); The reference plate (11) is used to support the two-dimensional adjustment mechanism (2) and the micrometer device (3), thereby improving the stability of the detection device; The fixing component (14) is used to fix the movable end reading device in the gauge slot, so that the wheel diameter ruler positioning surface is in close contact with the detection positioning plate (13).

2. The vertical testing device for a wheel diameter gauge micrometer according to claim 1, characterized by The fixing component (14) includes at least two first fixing members (15); The first fixing member (15) passes through one end of the reference base (12) and is used to abut against the wheel diameter ruler movable end reading device (8), so that the side wall of the wheel diameter ruler movable end reading device (8) abuts against the detection positioning plate (13).

3. The vertical testing device for a wheel diameter gauge micrometer according to claim 1, characterized by It also includes a second fixing member (16) disposed on the reference base (12), the second fixing member (16) being used to press the bottom wall of the wheel diameter ruler movable end reading device (8) against the gauge slot.

4. The vertical testing device for a wheel diameter gauge micrometer according to claim 1, characterized by The two-dimensional adjustment mechanism (2) includes a Y-axis adjustable displacement device (5) and an X-axis adjustable displacement device (6); The Y-axis adjustable displacement device (5) includes a vertical track (51), a vertical block (52), and a vertical fixing component (53); The vertical track (51) is set on the reference plate (11), the vertical block (52) is slidably set on the vertical track (51), the vertical block (52) is fixed on the vertical track (51) by the vertical fixing member (53), and the X-axis adjustable displacement device (6) is set on the vertical block (52).

5. The vertical testing device for a wheel diameter gauge micrometer according to claim 4, characterized by The X-axis adjustable displacement device (6) includes a horizontal track (61), a horizontal block (62), and a horizontal fixing component (63); The horizontal track (61) is set on the vertical block (52), the horizontal block (62) is slidably set on the horizontal track (61), the horizontal block (62) is fixed on the horizontal track (61) by the horizontal fixing member (63), and the inspection tool micrometer (3) is set on the horizontal block (62).

6. The vertical testing device for a wheel diameter gauge micrometer according to claim 5, characterized by The travel range of the horizontal block (62) is adapted to different wheel diameter gauges.

7. The vertical testing device for a wheel gage micrometer according to claim 1, wherein It also includes a coaxial retainer (7) disposed between the micrometer device (3) of the inspection fixture and the micrometer device (4) being inspected.

8. The vertical testing device for a wheel diameter gauge micrometer device according to claim 1, characterized by The coaxial retainer (7) includes a coaxial cylinder, which is used to make the axis of the micrometer device (3) of the gauge and the micrometer device (4) being tested the same.

9. The vertical testing device for a wheel gage micrometer according to claim 1, wherein The gauge block specifications between the micrometer device (3) and the micrometer device (4) being tested include, but are not limited to, 5.12mm, 10.24mm, 15.36mm, 20mm, and 25mm, used for calibration of indication error in different ranges.

10. The vertical testing device for the wheel diameter measuring micrometer according to claim 1, characterized in that, The reference plate (11), reference base (12), and detection positioning plate (13) are integrally connected.

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