Axle box rotating arm aperture automatic measuring device and measuring system

Abstract

The invention discloses an axle box rotating arm aperture automatic measuring device and measuring system, the axle box rotating arm aperture comprises two to-be-measured holes, namely an axle box hole and a node hole, and the device comprises a rack; the node hole measuring mechanism and the axle box hole measuring mechanism are arranged on the rack, and the node hole measuring mechanism is used for measuring node holes when the axle box rotating arm is fixed on the rack; the axle box hole measuring mechanism is used for measuring an axle box hole when the axle box rotating arm is fixed on the rack, the axle box hole measuring mechanism and the node hole measuring mechanism are adjacently arranged at an interval, and the node hole measuring mechanism and the axle box hole measuring mechanism both comprise sensor assemblies for measurement; the ring gauge and positioning assembly is arranged on the rack and is used for calibrating the sensor assembly; and the control assembly is electrically connected with the node hole measuring mechanism, the axle box hole measuring mechanism and the sensor assembly, and is used for controlling the sensor assembly to carry out calibration based on the ring gauge and the positioning assembly, and then controlling the node hole measuring mechanism and the axle box hole measuring mechanism to carry out automatic measurement on the node hole and the axle box hole.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical equipment aperture measurement, and more particularly to an axle box rotating arm aperture automatic measurement device and a measurement system. BACKGROUND

[0002] In the prior art, small-size regular part measurement has generally adopted small measurement sensors and portable measurement instruments, and the technology is mature and stable in precision, forming a standardized detection process. However, for large-size irregular parts, due to the complex structure and difficult positioning, there is still a lack of high-precision automatic measurement equipment matching them, resulting in the overall lag of the measurement technology of such parts.

[0003] In the field of EMU maintenance, this gap is particularly evident: in addition to the special automatic measurement instruments equipped due to high standardization, most of the remaining large irregular parts still rely on manual handheld measurement instruments for detection. Manual intervention not only has low efficiency, but also is affected by factors such as operator experience and fatigue, making it difficult to guarantee the consistency and reliability of the measurement results.

[0004] Specifically for the axle box rotating arm, the inner hole precision requirement is high, but there is still no automatic measurement equipment for this part on the current market. On-site generally adopts the method of manual handheld measuring tools to measure each hole, which is easy to cause detection deviation due to inaccurate positioning and reading error, and also requires manual recording of a large amount of data, further increasing the error probability, and it is difficult to meet the urgent needs of EMU maintenance for high efficiency and high precision. SUMMARY

[0005] Therefore, in view of the above defects or improvement needs of the prior art, the present application can complete the continuous detection of two groups of key sizes of axle box holes and node holes at one time in the same clamping state, thereby completely eliminating the repeated positioning errors and reference conversion errors caused by step-by-step measurement in the prior art, and significantly improving the measurement precision and repeatability. In order to achieve the above purpose, in the first aspect, the present application adopts an axle box rotating arm aperture automatic measurement device, the axle box rotating arm aperture includes two holes to be measured, namely axle box holes and node holes, and the device includes a rack, a node hole measuring mechanism and an axle box hole measuring mechanism arranged on the rack, a ring gauge and a positioning assembly, and a control assembly. The node hole measuring mechanism is used to measure the node hole when the axle box rotating arm is fixed on the rack; the axle box hole measuring mechanism is used to measure the axle box hole when the axle box rotating arm is fixed on the rack, the axle box hole measuring mechanism and the node hole measuring mechanism are arranged adjacent to each other, and the node hole measuring mechanism and the axle box hole measuring mechanism both contain a sensor assembly for measurement; The ring gauge and the positioning assembly are arranged on the rack and are used to calibrate the sensor assembly; The control assembly is electrically connected with the node hole measuring mechanism, the shaft box hole measuring mechanism and the sensor assembly, for controlling the sensor assembly to calibrate based on the ring gauge and the positioning assembly, and then controlling the node hole measuring mechanism and the shaft box hole measuring mechanism to automatically measure the node hole and the shaft box hole.

[0006] In the first aspect, the shaft box hole measuring mechanism comprises a first mounting bracket having a first upright portion and a first horizontal portion, the first horizontal portion being arranged at the top end of the first upright portion, the first horizontal portion having a first mounting area, and a shaft box hole support positioning assembly being arranged on the first mounting area and having a first measurement hole position coinciding with the first mounting area, an inner side wall of the first measurement hole position being arranged with a first measurement sensor of the sensor assembly. In the first aspect, the shaft box hole measuring mechanism comprises a first mounting bracket having a first upright portion and a first horizontal portion, the first horizontal portion being arranged at the top end of the first upright portion, the first horizontal portion having a first mounting area, and a shaft box hole support positioning assembly being arranged on the first mounting area and having a first measurement hole position coinciding with the first mounting area, an inner side wall of the first measurement hole position being arranged with a first measurement sensor of the sensor assembly. A shaft box hole right-angle lifting seat, a shaft box hole floating module, a shaft box hole electric rotating table and a shaft box hole measuring positioning cylinder are sequentially arranged from bottom to top below the first measurement hole position of the first mounting area along the height direction of the first upright portion, and the above components are driven to move up and down by a first driving assembly.

[0007] In the first aspect, the shaft box hole measuring mechanism comprises a first mounting bracket having a first upright portion and a first horizontal portion, the first horizontal portion being arranged at the top end of the first upright portion, the first horizontal portion having a first mounting area, and a shaft box hole support positioning assembly being arranged on the first mounting area and having a first measurement hole position coinciding with the first mounting area, an inner side wall of the first measurement hole position being arranged with a first measurement sensor of the sensor assembly. In the first aspect, the shaft box hole measuring mechanism comprises a first mounting bracket having a first upright portion and a first horizontal portion, the first horizontal portion being arranged at the top end of the first upright portion, the first horizontal portion having a first mounting area, and a shaft box hole support positioning assembly being arranged on the first mounting area and having a first measurement hole position coinciding with the first mounting area, an inner side wall of the first measurement hole position being arranged with a first measurement sensor of the sensor assembly. A node hole right-angle lifting seat, a node hole floating module, a node hole electric rotating table and a node hole measuring positioning cylinder are sequentially arranged from bottom to top below the second measurement hole position of the second mounting area along the height direction of the second upright portion, and the above components are driven to move up and down by a second driving assembly.

[0008] In the first aspect, the measuring device further comprises a third driving assembly and a translation linear guide rail assembly, the third driving assembly being drivingly connected with the ring gauge and the positioning assembly, and the ring gauge and the positioning assembly being arranged on the translation linear guide rail assembly. The third driving assembly is used to drive the ring gauge and positioning assembly to displace on the translational linear guide rail assembly, so as to displace the ring gauge and positioning assembly towards the node hole measuring mechanism and the shaft box hole measuring mechanism, or displace the ring gauge and positioning assembly away from the node hole measuring mechanism and the shaft box hole measuring mechanism.

[0009] In the first aspect, the ring gauge and positioning assembly comprises a first ring gauge, a first ring gauge pressing plate, a first ring gauge tray and a first ring gauge positioning assembly. The first ring gauge positioning assembly is arranged on the rack and located at the side of the first measuring hole position. The first ring gauge positioning assembly is used to position the first ring gauge tray. The first ring gauge is arranged on the first translational linear guide rail assembly of the translational linear guide rail assembly through the first ring gauge tray and fixed or loosened through the first ring gauge pressing plate.

[0010] In the first aspect, the ring gauge and positioning assembly further comprises a second ring gauge, a second ring gauge pressing plate, a second ring gauge tray and a second ring gauge positioning assembly. The second ring gauge positioning assembly is arranged on the rack and located at the side of the second measuring hole position. The second ring gauge positioning assembly is used to position the second ring gauge tray. The second ring gauge is arranged on the second translational linear guide rail assembly of the translational linear guide rail assembly through the second ring gauge tray and fixed or loosened through the second ring gauge pressing plate.

[0011] In the first aspect, the measuring device further comprises a rotating pressing assembly and a centering assembly. The rotating pressing assembly is arranged on the machine box and located at the side of the first measuring hole position, and is used to press the shaft box rotating arm. The centering assembly is arranged on the machine box and located at the side of the second measuring hole position, and is used to position the node hole of the shaft box rotating arm.

[0012] In the first aspect, the first driving assembly comprises a shaft box hole lifting linear guide rail and a shaft box hole driving member. The shaft box hole lifting linear guide rail is arranged along the height direction of the first vertical part. The driving end of the shaft box hole driving member is arranged on the shaft box hole lifting linear guide rail. The non-driving end of the shaft box hole driving member is connected with the shaft box hole right-angle lifting seat.

[0013] In the first aspect, the second driving assembly comprises a node hole lifting linear guide rail and a node hole driving member. The node hole lifting linear guide rail is arranged along the height direction of the first vertical part. The driving end of the node hole driving member is arranged on the node hole lifting linear guide rail. The non-driving end of the node hole driving member is connected with the node hole right-angle lifting seat.

[0014] In the second aspect, the application provides a mechanical component measuring system, which comprises the shaft box rotating arm hole diameter automatic measuring device.

[0015] Advantages of the present application: 1. The present application provides a kind of axle box rotating arm aperture automatic measuring equipment, node hole measuring mechanism is arranged adjacent with axle box hole measuring mechanism on rack and interval fixed, and after in situ calibration of two sets of sensor components by ring gauge and positioning assembly, it is driven by control component to measure synchronously, therefore, the continuous detection of two groups of key dimensions of axle box hole and node hole can be completed in the same clamping state at one time, so that the positioning error and reference conversion error brought by step-by-step measurement in prior art are completely eliminated, and the measurement precision and repeatability are significantly improved.

[0016] 2. Further, based on the above integrated layout and automatic calibration-measurement closed-loop control, the equipment does not need manual tool replacement or secondary alignment when batch detection, which shortens single piece beat, and reduces operation skill requirement;At the same time, sensor components keep high consistency for a long time after real-time calibration by ring gauge, reduce system error caused by temperature drift or wear, and then realize high reliability acquisition of axle box rotating arm full sequence aperture data, which provides stable data basis for subsequent assembly quality control and process optimization. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The drawing is the structure schematic diagram of the axle box rotating arm aperture automatic measuring equipment provided by the present application; Figure 2 The drawing is the side view of the axle box rotating arm aperture automatic measuring equipment provided by the present application; Figure 3 The drawing is the top view of the axle box rotating arm aperture automatic measuring equipment provided by the present application; Figure 4 The drawing is the structure schematic diagram of axle box hole measuring mechanism provided by the present application; Figure 5 The drawing is the partial sectional view of axle box hole measuring mechanism provided by the present application; Figure 6 The drawing is the structure schematic diagram of node hole measuring mechanism provided by the present application; Figure 7 The drawing is the partial sectional view of node hole measuring mechanism provided by the present application; Wherein: 1, shock-absorbing foot pad; 2, rack; 3, centering assembly; 4, first ring positioning assembly; 5, third driving group; 6, rotating compression assembly; 7, translational linear guide rail assembly; 8, first ring gauge tray; 9, first ring gauge; 10. First ring gauge pressure plate; 11. Tricolor light; 12. Control box; 13. Pneumatic control components; 14. Electronic control components; 15. Button operation box; 16. Shaft box bore measuring mechanism; 1601. First mounting bracket; 1602. Shaft box bore right-angle lifting seat; 1603. Shaft box bore floating module; 1604. Shaft box bore electric rotary table; 1605. Shaft box bore measuring positioning cylinder; 1606. Shaft box bore support positioning assembly; 1607. Shaft box bore lifting linear guide; 1608. Shaft box bore driving component; 1609. First measuring sensor; 1610. First sensor bracket; 17. Node hole measuring mechanism; 1701. Second mounting bracket; 1702. Node hole measuring positioning cylinder; 1703. Node hole support base; 1704. Second measuring sensor; 1705. Second sensor bracket; 1706. Node hole right-angle lifting base; 1707. Node hole rotary table; 1708. Node hole floating module; 1709. Node hole lifting linear guide; 1710. Node hole driving component; 18. Second ring gauge pallet; 19. Second Ring Road; 20. Second ring gauge pressure plate. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Example 1: like Figures 1-7 As shown, this embodiment discloses an automatic measuring device for the bore diameter of axle box pivot arm. The bore diameter of the axle box pivot arm includes two holes to be measured: axle box hole and node hole. The device includes: a frame 2, a node hole measuring mechanism 17 and axle box hole measuring mechanism 16 mounted on the frame 2, a ring gauge and positioning components, and a control component. The node hole measuring mechanism 17 is used to measure the node hole when the axle box arm is fixed on the frame 2; the axle box hole measuring mechanism 16 is used to measure the axle box hole when the axle box arm is fixed on the frame 2. The axle box hole measuring mechanism 16 and the node hole measuring mechanism 17 are arranged adjacent to each other at intervals. Both the node hole measuring mechanism 17 and the axle box hole measuring mechanism 16 include a measuring sensor assembly. The ring gauge and positioning assembly are mounted on the frame 2 and are used to calibrate the sensor assembly; The control component is electrically connected to the node hole measuring mechanism 17, the axle box hole measuring mechanism 16 and the sensor component, and is used to control the sensor component to perform calibration based on the ring gauge and positioning component, and then control the node hole measuring mechanism 17 and the axle box hole measuring mechanism 16 to automatically measure the node hole and the axle box hole; Specifically, this equipment arranges the node hole measuring mechanism 17 and the axle box hole measuring mechanism 16 adjacently and at intervals on the frame 2. The two sensor assemblies are calibrated in situ using ring gauges and positioning components before being synchronously or individually driven by the control component. The measurement method can be selected according to actual process requirements. During synchronous drive measurement, continuous detection of two sets of key dimensions—axle box holes and node holes—can be completed simultaneously under the same clamping condition, thus completely eliminating the repetitive positioning errors and reference conversion errors caused by step-by-step measurement in existing technologies, significantly improving measurement accuracy and repeatability. Furthermore, based on the above integrated layout and automatic calibration-measurement closed-loop control, the equipment eliminates the need for manual tooling changes or secondary alignment during batch testing, shortening the cycle time per piece and reducing operational skill requirements. Simultaneously, the sensor assemblies maintain high consistency over a long period after real-time calibration by ring gauges, reducing system errors caused by temperature drift or wear. This achieves highly reliable acquisition of the entire sequence of hole diameter data for the axle box arm, providing a stable data foundation for subsequent assembly quality control and process optimization.

[0022] In one specific embodiment, the axle box bore measuring mechanism 16 includes: a first mounting bracket 1601 having a first upright portion and a first horizontal portion, the first horizontal portion being disposed at the top of the first upright portion, the first horizontal portion having a first mounting area, and the axle box bore location of the axle box rotating arm being mounted above the first mounting area; an axle box bore support and positioning assembly 1606 disposed in the first mounting area, and having a first measuring hole that overlaps with the first mounting area on the axle box bore support and positioning assembly 1606, and a first measuring sensor 1609 of the sensor assembly being mounted on the inner sidewall of the first measuring hole; and axle box bore right-angle lifting seat 1602, axle box bore floating module 1603, axle box bore electric rotary table 1604, and axle box bore measuring and positioning cylinder 1605 arranged sequentially from bottom to top along the height direction of the first upright portion and directly below the first measuring hole in the first mounting area, and the above components being driven to move up and down by a first driving assembly.

[0023] In this specific embodiment, the axle box hole measuring mechanism 16 consists of a right-angle lifting seat 1602, a floating module 1603, an electric rotary table 1604, and a measuring positioning cylinder 1605 arranged sequentially from bottom to top along the height direction below the first horizontal part of the first mounting bracket 1601. A first measuring sensor 1609 is fixed in the first measuring hole position. The first measuring sensor 1609 is connected through a first sensor bracket 1610, so that the axle box hole of the axle box rotating arm only needs to be horizontally placed once and then lifted by the first drive assembly. This achieves coaxial alignment of the axle box hole and the first measuring sensor 1609 while completing automatic clamping and rotation scanning. This eliminates the positioning error caused by manual alignment, ensures high-precision continuous acquisition of the entire circumference of the inner hole, and significantly improves the measurement repeatability and reliability.

[0024] In another implementation, taking the axle box bore as an example: when the axle box arm is raised to a preset height, multiple sets of axle box bore diameter data are rotatably acquired at the current diameter cross-section. After data acquisition at this cross-section, the arm is raised or lowered to another preset height, and then multiple sets of diameter data of the axle box bore at this height are measured, thereby completing the measurement of the inner diameter of the axle box bore of the axle box arm. Similarly, node holes can also be measured according to the above implementation method.

[0025] Building upon this foundation, the synergistic effect of the axle box hole floating module 1603 and the right-angle lifting seat can adaptively correct part posture deviations during the lifting process, avoiding deformation or scratches caused by rigid contact. Simultaneously, it ensures smooth entry of the measuring cylinder into the hole to be measured. The electric rotary table enables the sensor to complete scanning at a constant speed, further suppressing local measurement noise. Under the unified scheduling of the control components, the entire mechanism integrates calibration, lifting, rotation, and measurement actions into a closed-loop process, significantly shortening the cycle time per unit. Furthermore, it can operate stably for extended periods without manual intervention, thus providing a highly efficient and low-labor-intensity automatic axle box hole measurement solution for high-speed train maintenance sites.

[0026] In one specific embodiment, the node hole measuring mechanism 17 includes: a second mounting bracket 1701 having a second upright portion and a second horizontal portion, the second horizontal portion being located at the top of the second upright portion and having a second mounting area, the node hole of the axle box arm being mounted above the second mounting area; a node hole support 1703 being located on the second mounting area, and having a second measuring hole position that overlaps with the node hole support 1703 and the second mounting area, the second measuring sensor 1704 of the sensor assembly being mounted on the inner sidewall of the second measuring hole position, the second measuring sensor 1704 being connected via a second sensor bracket 1705, and a node hole right-angle lifting seat 1706, a node hole floating module 1708, a node hole electric rotary table 1707, and a node hole measuring positioning cylinder 1702 being arranged sequentially from bottom to top along the height direction of the second upright portion and directly below the second measuring hole position in the second mounting area, and the above components being driven to move up and down by a second driving component.

[0027] In this specific embodiment, the node hole measuring mechanism 17 forms a stable cantilever frame through the second horizontal part and the second vertical part of the second mounting bracket 1701, allowing the node hole to be placed horizontally directly in the second mounting area. The second drive assembly drives the node hole right-angle lifting seat 1706, the node hole floating module 1708, the node hole electric rotary table 1707, and the node hole measuring positioning cylinder 1702 to move from bottom to top as a whole, accurately guiding the node hole into the second measuring hole position and coaxially docking it with the second measuring sensor 1704, realizing automatic full-circumference scanning measurement of the node hole in a single clamping. This structure completely eliminates the manual point-by-point measurement method using handheld measuring tools, eliminating accuracy fluctuations caused by inaccurate alignment and reading errors, and significantly improving the repeatability and traceability of key parameters such as node hole diameter and roundness. Meanwhile, the synergistic effect of the node hole floating module 1708 and the node hole electric rotary table 1707 can adaptively correct the part's posture deviation during the lifting process, avoiding deformation or scratches caused by rigid clamping; the uniform scanning of the rotary table effectively suppresses local measurement noise, ensuring continuous and high-resolution data. Under the unified scheduling of the control components, the entire mechanism runs the measurement process of node holes and axle box holes in parallel, realizing simultaneous detection of two holes or single hole measurement at the same station and with one clamping, significantly shortening the cycle time per part and reducing the need for manual intervention. Thus, it provides a highly efficient, low-labor-intensity, and long-term stable automatic measurement solution for node holes in EMU maintenance sites.

[0028] In one specific embodiment, the measuring device further includes a third drive component 5 and a translational linear guide assembly 7, which are disposed on the frame 2. The drive end of the third drive component 5 is drivenly connected to the ring gauge and positioning component, and the ring gauge and positioning component is disposed on the translational linear guide assembly 7. The third drive component 5 is used to drive the ring gauge and positioning component to move on the translational linear guide assembly 7, so that the ring gauge and positioning component moves toward the node hole measuring mechanism 17 and the axle box hole measuring mechanism 16, or moves away from the node hole measuring mechanism 17 and the axle box hole measuring mechanism 16.

[0029] Specifically, the third drive assembly 5 and the translational linear guide assembly 7 design the ring gauge and positioning assembly as a reciprocating "mobile calibration station." When calibration is required, the third drive assembly 5 can precisely push it directly below the measuring position of the node hole measuring mechanism 17 or the axle box hole measuring mechanism 16, ensuring that the ring gauge and the corresponding sensor assembly are coaxially aligned, completing high-precision in-situ calibration of the zero point and amplification factor. After calibration, the third drive assembly 5 then retracts it to the standby area, completely clearing the measurement space. Thus, the calibration action, part clamping, and measurement actions are time-division multiplexed at the same station, eliminating secondary positioning errors caused by moving sensors or ring gauges, avoiding manual intervention, and ensuring the consistency of long-term measurement accuracy.

[0030] In one specific embodiment of the ring gauge and positioning assembly, it includes: a first ring gauge 9, a first ring gauge pressure plate 10, a first ring gauge tray 8, and a first ring gauge 9 positioning assembly 4; the first ring gauge 9 positioning assembly 4 is disposed on the frame 2 and located on the side of the first measuring hole position, the first ring gauge 9 positioning assembly 4 is used to position the first ring gauge tray 8, the first ring gauge 9 is disposed on the translation linear guide rail assembly 7 through the first ring gauge tray 8, and is fixed or loosened by the first ring gauge pressure plate 10.

[0031] Specifically, the first ring gauge 9 is rigidly mounted on the translational linear guide assembly 7 via the first ring gauge tray 8, and is quickly locked or released with the help of the first ring gauge pressure plate 10, ensuring that the ring gauge maintains coaxial accuracy with the sensor axis throughout the reciprocating translation process with the third drive assembly 5. The positioning assembly 4 of the first ring gauge 9 is fixed to the frame 2 and adjacent to the first measuring hole, providing high-precision mechanical limit and repeatable positioning reference immediately after the ring gauge tray is in place, thereby eliminating repeatable errors caused by tray shaking or assembly gaps during calibration, ensuring high consistency of the zero point and amplification coefficient calibration results of the axle box hole sensor. Furthermore, the modular design of the pressure plate-tray-positioning assembly allows the first ring gauge 9 to be quickly replaced online or periodically calibrated without disassembling the sensor, shortening the maintenance window from hours to minutes. The side-mounted layout of the positioning assembly avoids interference with the measurement movement path, allowing calibration, avoidance, and reset actions to be automatically completed within a fully enclosed protective space without manual intervention. As a result, while maintaining long-term measurement accuracy, the equipment significantly reduces the impact of ring gauge maintenance on production cycle time, providing high-reliability, low-maintenance online traceability capability for axle box bores at the EMU maintenance site.

[0032] In another specific embodiment of the ring gauge and positioning assembly, it further includes: a second ring gauge 19, a second ring gauge pressure plate 20, a second ring gauge tray 18, and a second ring gauge 19 positioning assembly; the second ring gauge 19 positioning assembly is disposed on the frame 2 and located on the side of the second measuring hole position. The second ring gauge 19 positioning assembly is used to position the second ring gauge tray 18. The second ring gauge 19 is disposed on the translation linear guide rail assembly 7 via the second ring gauge tray 18, and is fixed or loosened by the second ring gauge pressure plate 20. The implementation of this second ring gauge 19, second ring gauge pressure plate 20, second ring gauge tray 18, and second ring gauge 19 positioning assembly is based on the same principle as the implementation of the first ring gauge 9, first ring gauge pressure plate 10, first ring gauge tray 8, and first ring gauge 9 positioning assembly 4 in the above embodiment, and therefore will not be described again.

[0033] In one specific embodiment, the measuring device further includes a rotary clamping assembly 6 and a centering assembly 3. The rotary clamping assembly 6 is located on the side of the housing at the first measuring hole position. After the rotating arm is placed on the device, the cylinder of the rotary clamping assembly 6 is vented to clamp the rotating arm of the axle box. The centering assembly 3 is bolted to the side of the housing at the second measuring hole position and is used to position the node hole of the axle box rotating arm. The rotating arm is positioned and secured by the rotary clamping assembly 6 and the centering assembly 3.

[0034] In one specific embodiment, the first driving component includes: a shaft box hole lifting linear guide 1607 and a shaft box hole driving member 1608. The shaft box hole lifting linear guide 1607 is arranged along the height direction of the first vertical part. The driving end of the shaft box hole driving member 1608 is located on the shaft box hole lifting linear guide 1607, and the non-driving end of the shaft box hole driving member 1608 is connected to the shaft box hole right-angle lifting seat 1602. When a lifting action is required, the driving end of the shaft box driving member can be driven through the shaft box hole lifting linear guide 1607, causing the shaft box hole driving member 1608 to drive the shaft box hole right-angle lifting seat 1602 to rise. Conversely, when a lowering action is required, the driving end of the shaft box driving member can be driven through the shaft box hole lifting linear guide 1607, causing the shaft box hole driving member 1608 to drive the shaft box hole right-angle lifting seat 1602 to fall.

[0035] In one specific embodiment, the second driving component includes a node hole lifting linear guide 1709 and a node hole driving component 1710. The node hole lifting linear guide 1709 is arranged along the height direction of the first vertical part, and the node hole driving component 1710 is disposed on the node hole lifting linear guide 1709. The driving end of the node hole driving component 1710 is connected to the driving head of the node hole right-angle lifting seat 1706. When a lifting action is required, the node hole driving component 1710 can be driven by the driving end of the node hole lifting linear guide 1709 to drive the node hole driving component 1710 to lift the node hole right-angle lifting seat 1706. Conversely, when a lowering action is required, the node hole driving component 1710 can be driven by the driving end of the node hole lifting linear guide 1709 to drive the node hole driving component 1710 to lower the node hole right-angle lifting seat 1706.

[0036] In one specific embodiment, the measuring device also includes a three-color light 11: providing audible and visual cues to indicate the device's operating status, such as red, yellow, and green lights representing different indication states. The device is also controlled via an operation box 12 and a button operation box 15. For example, the manual operation box 12 allows selection of standalone measurement or online automatic measurement. In standalone operation, the button operation box 15 allows for convenient manual control of the measurement via the buttons.

[0037] In one specific implementation, the control components include a pneumatic control component 13 and an electrical control component. The pneumatic control component 13 is used for supplying and controlling the air to the equipment cylinder, and the electrical control component is used for controlling the electrical components of the equipment.

[0038] In one specific implementation, in order to make the equipment more stable during operation, shock-absorbing pads 1 are provided at the bottom of the frame 2 to reduce the impact of external vibrations on the measurement process.

[0039] In summary, the automatic measuring device for the bore diameter of the axle box swing arm of the present invention is compatible with various swing arm models such as CRH380A, CRH380B, CR300BF, and CR400BF; it can interact with the workshop MES system and robotic arms to perform fully automatic measurement of the swing arm's inner diameter. Simultaneously, the invention is also compatible with manual measurement functions in stand-alone mode. Furthermore, this solution eliminates manual measurement operation errors, achieving high-precision measurement and improving work efficiency. It fills the gap in the automatic measurement of the inner diameter of large, irregular parts in the high-speed train maintenance industry, providing technical support for high-precision automated measurement of the inner diameter of components in high-speed train maintenance and other industries.

[0040] Example 2: This second embodiment provides a measurement system for mechanical components. The measurement system for mechanical components includes the automatic measuring device for the diameter of the axle box pivot hole described above. The automatic measuring device realizes the automated measurement of the node hole and the axle box hole.

[0041] Specifically, the node hole measuring mechanism and the axle box hole measuring mechanism are fixedly arranged adjacently and at intervals on the automatic measuring frame. After the two sets of sensor assemblies are calibrated in situ by ring gauges and positioning components, the control components drive the measurement synchronously. Therefore, the continuous detection of two sets of key dimensions, axle box holes and node holes, can be completed in the same clamping state at one time, thereby completely eliminating the repeated positioning error and reference conversion error caused by step measurement in the prior art, and significantly improving the measurement accuracy and repeatability.

[0042] The description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic measuring device for the bore diameter of axle box swing arm, wherein the bore diameter of the axle box swing arm includes two holes to be measured: axle box hole and a node hole, characterized in that, The device includes: Rack (2); A node hole measuring mechanism (17) and a shaft box hole measuring mechanism (16) are provided on the frame (2). The node hole measuring mechanism (17) is used to measure the node hole when the shaft box arm is fixed on the frame (2). The shaft box hole measuring mechanism (16) is used to measure the shaft box hole when the shaft box arm is fixed on the frame (2). The shaft box hole measuring mechanism (16) and the node hole measuring mechanism (17) are arranged adjacent to each other at intervals. Both the node hole measuring mechanism (17) and the shaft box hole measuring mechanism (16) include a measuring sensor assembly. A ring gauge and positioning assembly are mounted on the frame (2) for calibrating the sensor assembly; The control component is electrically connected to the node hole measuring mechanism (17), the axle box hole measuring mechanism (16) and the sensor component, and is used to control the sensor component to perform calibration based on the ring gauge and positioning component, and then control the node hole measuring mechanism (17) and the axle box hole measuring mechanism (16) to automatically measure the node hole and the axle box hole.

2. The automatic measuring device for the bore diameter of the axle box rotating arm according to claim 1, characterized in that, The axle box bore measuring mechanism (16) includes: The first mounting bracket (1601) has a first upright part and a first horizontal part. The first horizontal part is located at the top of the first upright part. The first horizontal part has a first mounting area. Above the first mounting area is the location of the axle box hole for mounting the axle box arm. A shaft box hole support positioning assembly (1606) is provided in the first installation area, and a first measuring hole is opened on the shaft box hole support positioning assembly (1606) and the first installation area, and a first measuring sensor (1609) of the sensor assembly is installed on the inner side wall of the first measuring hole. Along the height direction of the first upright part, directly below the first measuring hole in the first installation area, the axle box hole right-angle lifting seat (1602), the axle box hole floating module (1603), the axle box hole electric rotary table (1604), and the axle box hole measuring positioning cylinder (1605) are arranged sequentially from bottom to top, and the above components are driven by the first driving component to move up and down.

3. The automatic measuring device for the bore diameter of the axle box rotating arm according to claim 2, characterized in that, The node hole measuring mechanism (17) includes: The second mounting bracket (1701) has a second upright part and a second horizontal part. The second horizontal part is located at the top of the second upright part. The second horizontal part has a second mounting area. The node hole for mounting the axle box arm is located above the second mounting area. A node hole support (1703) is provided on the second mounting area, and a second measuring hole is opened on the node hole support (1703) and the second mounting area, and a second measuring sensor (1704) of the sensor assembly is installed on the inner side wall of the second measuring hole. Along the height direction of the second upright part, directly below the second measuring hole in the second installation area, the node hole right-angle lifting seat (1706), the node hole floating module (1708), the node hole electric rotary table (1707), and the node hole measuring positioning cylinder (1702) are arranged sequentially from bottom to top, and the above components are driven by the second driving component to move up and down.

4. The automatic measuring device for the bore diameter of the axle box rotating arm according to claim 3, characterized in that: The measuring device also includes a third drive assembly (5) and a translation linear guide assembly (7), which are located on the frame (2). The drive end of the third drive assembly (5) is drivenly connected to the ring gauge and positioning assembly, which is located on the translation linear guide assembly (7). The third driving component (5) is used to drive the ring gauge and positioning component to move on the translation linear guide component (7), so that the ring gauge and positioning component moves toward the node hole measuring mechanism (17) and the axle box hole measuring mechanism (16), or drives the ring gauge and positioning component to move away from the node hole measuring mechanism (17) and the axle box hole measuring mechanism (16).

5. The automatic measuring device for the bore diameter of the axle box rotating arm according to any one of claims 1-4, characterized in that, The ring gauge and positioning components include: The first ring gauge (9), the first ring gauge pressure plate (10), the first ring gauge tray (8), and the first ring gauge (9) positioning assembly (4) are provided on the frame (2) and located on the side of the first measuring hole. The first ring gauge (9) positioning assembly (4) is used to position the first ring gauge tray (8). The first ring gauge (9) is provided on the first translation linear guide assembly (7) of the translation linear guide assembly (7) through the first ring gauge tray (8) and is fixed or loosened by the first ring gauge pressure plate (10).

6. The automatic measuring device for the bore diameter of the axle box swing arm according to any one of claims 1-4, characterized in that, The ring gauge and positioning components also include: The second ring gauge (19), the second ring gauge pressure plate (20), the second ring gauge tray (18), and the second ring gauge (19) positioning assembly; the second ring gauge (19) positioning assembly is provided on the frame (2) and located on the side of the second measuring hole. The second ring gauge (19) positioning assembly is used to position the second ring gauge tray (18). The second ring gauge (19) is provided on the second translation linear guide assembly (7) of the translation linear guide assembly (7) through the second ring gauge tray (18) and is fixed or loosened by the second ring gauge pressure plate (20).

7. The automatic measuring device for the bore diameter of the axle box rotating arm according to claim 1, characterized in that: The measuring device further includes a rotary clamping assembly (6) and a centering assembly (3). The rotary clamping assembly (6) is located on the side of the housing at the first measuring hole position and is used to clamp the axle box rotating arm. The centering assembly (3) is located on the side of the housing at the second measuring hole position and is used to position the node hole of the axle box rotating arm.

8. The automatic measuring device for the bore diameter of the axle box rotating arm according to claim 6, characterized in that, The first driving component includes: The axle box hole lifting linear guide (1607) and the axle box hole driving component (1608) are provided. The axle box hole lifting linear guide (1607) is arranged along the height direction of the first vertical part. The driving end of the axle box hole driving component (1608) is located on the axle box hole lifting linear guide (1607), and the non-driving end of the axle box hole driving component (1608) is connected to the axle box hole right angle lifting seat (1602).

9. The automatic measuring device for the bore diameter of the axle box rotating arm according to claim 6, characterized in that, The second drive component includes: The node hole lifting linear guide (1709) and the node hole drive (1710) are provided. The node hole lifting linear guide (1709) is arranged along the height direction of the first vertical part. The driving end of the node hole drive (1710) is located on the node hole lifting linear guide (1709), and the non-driving end of the node hole drive (1710) is connected to the node hole right angle lifting seat (1706).

10. A measuring system for a mechanical component, characterized in that: The measurement system for the mechanical component includes the automatic measuring device for the bore diameter of the axle box pivot arm as described in any one of claims 1-9.

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