Wheelset measuring device

Abstract

The utility model discloses a wheel pair measuring device, including datum fixed frame and measuring mechanism, datum fixed frame includes arc plate, is equipped with C type track on the arc plate, the middle and both sides of arc plate lower part are equipped with datum positioning spare respectively, is equipped with datum bolt hole on datum positioning spare, the both sides of the upper portion of arc plate are installed with flange chucking mechanism, measuring mechanism includes survey support, level measuring scale and digital display dial gauge, and survey support includes handheld board, plane gyro wheel and track wheel, and one side of handheld board is equipped with plane gyro wheel and track wheel, the upper portion of handheld board is equipped with level measuring scale, and one end of level measuring scale is equipped with the digital display dial gauge of measuring end downward, and the measuring end of digital display dial gauge is equipped with measuring gyro wheel, the utility model improves the detection convenience and adaptability, can realize online measurement, effectively solved the problem that the reference is not unified, and the operation is complex, has the advantages such as simple structure, convenient operation, low cost.

Description

Technical Field

[0001] This utility model relates to the field of wheelset measurement technology, specifically to a wheelset measurement device. Background Technology

[0002] During use, the wheel-rail contact stress causes changes in the diameter and geometry of the wheel-rail rolling circle over time. These changes can cause impacts and vibrations during train operation, which can range from affecting train performance to causing derailment or overturning. Regularly measuring the dimensions of train wheelsets can effectively prevent abnormal wheel-rail wear and ensure the safety and stability of train operation.

[0003] Existing vehicle wheelset roughness testers can measure vehicle wheelset dimensions, but the wheelset being measured must be suspended in the air during measurement, making online measurement impossible. Furthermore, multiple people are required to perform the measurement, which is time-consuming, labor-intensive, and inefficient.

[0004] The currently widely used fourth-type wheel set inspector, as a multi-functional portable measuring tool, can cover the detection needs of conventional parameters such as rim thickness, rim width, and tread scratches. However, its mechanical contact measurement method has inherent defects: on the one hand, positioning deviations caused by manual operation can cause significant errors in key data such as rim vertical wear and tread peeling depth; on the other hand, limited by the single-point sampling mechanism, the device cannot completely reconstruct the continuous contour of the tread circumference, nor can it capture complex geometric deformations such as ellipses or polygons caused by uneven wear. This measurement blind spot will directly affect the accurate assessment of the wheel set's operational safety. Summary of the Invention

[0005] The purpose of this invention is to provide a wheelset measuring device that overcomes the shortcomings of the prior art.

[0006] The technical solution of this utility model:

[0007] A wheelset measuring device includes a reference fixing frame and a measuring mechanism;

[0008] The reference fixing frame includes an arc-shaped plate, on which a C-shaped track is provided;

[0009] The lower part of the arc plate is provided with reference positioning parts in the middle and on both sides. The reference positioning parts are provided with reference bolt holes, and the centers of the three reference bolt holes are concentric. The upper part of the arc plate is equipped with wheel flange clamping mechanisms through mounting ear plates.

[0010] The measuring mechanism includes a measuring bracket, a horizontal measuring ruler, and a digital dial indicator. The measuring bracket includes a handheld plate, a flat roller, and a track wheel. One side of the handheld plate is provided with a flat roller that contacts the inner side of the wheel rim, and a track wheel that is adapted to a C-shaped track. The upper part of the handheld plate is provided with a horizontally adjustable horizontal measuring ruler. One end of the horizontal measuring ruler is provided with a digital dial indicator with the measuring end facing downward, and the measuring end of the digital dial indicator is provided with a measuring roller.

[0011] Furthermore, the mounting ear plate is provided with an elongated waist-shaped adjustment hole; the wheel flange clamping mechanism includes an arc-shaped clamping block and a locking bolt, with the locking bolt passing through the elongated waist-shaped adjustment hole and connecting to the arc-shaped clamping block.

[0012] Furthermore, the centerline of the elongated adjusting hole on the corresponding side is collinear with the centerline of the corresponding reference bolt hole.

[0013] Furthermore, the upper side of the handheld plate is provided with a strip-shaped hole through which one end of the horizontal measuring ruler passes; the top of the handheld plate is provided with a first locking screw, and the horizontal measuring ruler is locked by the first locking screw.

[0014] Furthermore, one end of the horizontal measuring ruler has a vertical through-hole, and the fixing cylinder at the bottom of the digital dial indicator is locked by a second locking screw.

[0015] Furthermore, the arc-shaped plate has a quarter-circle arc structure.

[0016] Furthermore, the curved plate, mounting ear plate, and reference positioning component are integrally molded into a single structure.

[0017] Furthermore, multiple weight-reducing holes are evenly distributed along the curvature direction in the middle of the arc-shaped plate.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model is based on the concentricity principle of diameter measurement. It achieves stable fixation through the three reference positioning parts and reference bolt holes of the reference fixing frame in conjunction with the wheel rim clamping mechanism, ensuring the consistency of the measurement reference. It adopts a C-shaped arc track design and precisely adjusts its center to coincide with the center of the wheelset, achieving coaxial positioning. The flat rollers and track wheels of the measuring ruler keep the measuring ruler parallel to the inner side of the wheel rim, ensuring that the center of the measuring ruler always coincides with the center of the wheelset when it rotates. The measuring point of the digital dial indicator maintains a constant reference line relationship with the center of the wheelset, ensuring the accuracy of the rolling circle measurement. The adjustable design of the horizontal measuring ruler supports rapid measurement of any position on the wheelset tread, realizing an efficient detection mode of "one point fixed, multiple points measured".

[0020] 2. This utility model significantly improves the convenience and adaptability of testing while ensuring measurement accuracy, and effectively solves the problems of inconsistent benchmarks and complicated operation.

[0021] 3. This utility model has a simple structure, is easy to operate, and has a low cost. It can be used for online measurement during train formation.

[0022] 4. By keeping the measurement benchmark unchanged, this utility model can continuously measure multiple dimensions of the same circumference of the wheelset, avoiding errors caused by repeated positioning, significantly improving measurement efficiency and accuracy, and effectively reducing human measurement errors. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the wheelset measuring device of this utility model;

[0024] Figure 2 for Figure 1 Sectional view of AA;

[0025] Figure 3 for Figure 1 Sectional view of BB;

[0026] Figure 4 This is a schematic diagram of the reference fixing frame.

[0027] Figure 5 This is the front view of the handheld device;

[0028] Figure 6 This is a schematic diagram of the measurement process of this utility model;

[0029] Figure 7 for Figure 6 Sectional view of CC;

[0030] Figure 8 for Figure 6 Sectional view of DD;

[0031] In the diagram: 1. Reference fixing frame; 2. Measuring mechanism; 3. C-shaped track; 4. Wheel flange clamping mechanism; 5. Reference adjusting bolt; 11. Arc plate; 12. Weight reduction hole; 13. Reference bolt hole; 14. Mounting ear plate; 15. Long waist-shaped adjusting hole; 16. Reference positioning component; 21. Measuring bracket; 22. Horizontal measuring ruler; 23. Digital dial indicator; 41. Arc-shaped locking block; 42. Locking bolt; 100. Wheel pair; 101. Wheel rim; 102. Tread; 103. First locking screw; 214. Hand plate; 211. Flat roller; 212. Track wheel; 213. Second locking screw; 221. Measuring roller; 231. Detailed Implementation

[0032] The present invention can be further described through the following embodiments; however, the scope of the present invention is not limited to the following embodiments. It should be understood that the embodiments described herein are disclosed by way of illustration only, and the present invention is not intended to limit its scope to the details of the construction and arrangement of the components described below or illustrated in the figures. Furthermore, in describing preferred embodiments, specific terminology will be used for clarity. It should be understood that each specific term includes all technical equivalents that operate in a similar manner to achieve a similar purpose.

[0033] Example: Please refer to Figures 1 to 8 As shown, a wheelset measuring device includes a reference fixing frame 1 and a measuring mechanism 2;

[0034] The reference mounting bracket 1 includes an arc-shaped plate 11. The size of the arc-shaped plate 11 is determined according to the size of the standard vehicle wheelset. The inner radius of the arc-shaped plate 11 is greater than or equal to the inner radius of the wheel rim 101, and the outer radius of the arc-shaped plate 11 is less than the outer radius of the wheel rim 101. A C-shaped track 3 is provided on the arc-shaped plate 11. The setting of the C-shaped track 3 realizes the coaxial guidance function of the measurement and ensures the consistency between the measurement trajectory and the center of the wheelset.

[0035] The lower part of the arc plate 11 is provided with reference positioning parts 16 in the middle and on both sides. The reference positioning parts 16 are provided with reference bolt holes 13, and the centers of the three reference bolt holes 13 are concentric. The upper part of the arc plate 11 is provided with wheel flange clamping mechanisms 4 through mounting ear plates 14. The three reference bolt holes 13 arranged in a concentric arc form a stable triangular positioning. With the arc-shaped locking block 41 of the wheel flange clamping mechanism 4, the reference fixing frame 1 can be locked through the elongated waist-shaped adjustment hole 15. The three-point concentric arc positioning combined with the wheel flange clamping mechanism can effectively eliminate the systematic error caused by the installation deviation of traditional measuring tools.

[0036] The measuring mechanism 2 includes a measuring bracket 21, a horizontal measuring ruler 22, and a digital dial indicator 23. The measuring bracket 21 includes a hand plate 211, a flat roller 212, and a track wheel 213. One side of the hand plate 211 is provided with a flat roller 212 that contacts the inner side of the rim 101, and a track wheel 213 that is adapted to the C-shaped track 3. The upper part of the hand plate 211 is provided with a horizontally adjustable horizontal measuring ruler 22. One end of the horizontal measuring ruler 22 is provided with a downward-facing digital dial indicator 23 that can be moved up and down. The digital dial indicator 23 is existing technology, and its structure will not be described in detail here. The measuring end of the digital dial indicator 23 is provided with a measuring roller 231. By adopting a composite guiding mechanism of flat roller 212 + track wheel 213, the horizontal measuring ruler 22 and the digital dial indicator 23 can maintain a stable movement trajectory in both the radial and axial directions, significantly improving the accuracy of contour data acquisition and enabling rapid detection at any position on the tread surface.

[0037] In one embodiment, the mounting ear plate 14 is provided with an elongated adjustment hole 15; the wheel rim clamping mechanism 4 includes an arc-shaped clamping block 41 and a locking bolt 42. The locking bolt 42 passes through the elongated adjustment hole 15 and is connected to the arc-shaped clamping block 41. The contact surface of the arc-shaped clamping block 41 is adapted to the curved surface of the wheel rim 102, which can reduce local stress concentration.

[0038] In one embodiment, the centerline of the elongated adjusting hole 15 on the corresponding side is collinear with the centerline of the corresponding reference bolt hole 13. The collinear design of the elongated adjusting hole 15 and the reference bolt hole 13 ensures that the clamping force is always transmitted radially, avoiding measurement reference offset.

[0039] In one embodiment, the upper side of the handheld plate 211 is provided with a strip hole through which one end of the horizontal measuring ruler 22 passes; the top of the handheld plate 211 is provided with a first locking screw 214, and the horizontal measuring ruler 22 is locked by the first locking screw 214.

[0040] In one embodiment, a mounting hole is provided vertically through one end of the horizontal measuring ruler 22, and the fixing cylinder at the bottom of the digital dial indicator 23 is locked by the second locking screw 221.

[0041] In one embodiment, the curved plate 11 is a quarter-circle arc structure. The quarter-circle arc design not only meets the measurement range requirements but also reduces material consumption and weight, thus improving portability.

[0042] In one embodiment, the arc plate 11, the mounting ear plate 14, and the reference positioning component 16 are integrally formed, which can significantly improve the overall rigidity, eliminate assembly errors, enhance fatigue resistance, and ensure the stability of the measurement reference.

[0043] In one embodiment, a plurality of weight-reducing holes 12 are evenly distributed along the curvature direction in the middle of the arc plate 11. The weight-reducing holes 12 further reduce the weight of the device without affecting the structural strength, thereby further improving portability.

[0044] When measuring with this utility model:

[0045] Place the reference fixing frame 1 against the inner side of the rim 101 of the wheelset 100 to be measured, press the reference adjusting bolt 5 against the top of the inner diameter of the inner side of the rim 101, press the arc-shaped locking block 41 against the rim 102, and lock the locking bolt 42 against the arc-shaped locking block 41.

[0046] Adjust the level measuring ruler 22 so that the measuring roller 231 is directly above the point to be measured on the tread 103 (the commonly used distance between the point to be measured and the inner side of the wheel rim is 70mm).

[0047] Adjust the position and height of the digital dial indicator 23 so that the measuring roller 231 is in close contact with the tread surface 103;

[0048] The handheld control panel 211 slides along the C-shaped arc track to collect the measurement data of the digital dial indicator 23. By comparing the measurement data with the standard data, the wear parameters of the measurement point can be obtained.

[0049] Wear parameters include diameter change, elliptical deformation, polygonal deformation, and tread wear.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wheelset measuring device, characterized in that, It includes a reference fixture (1) and a measuring mechanism (2); The reference fixing frame (1) includes an arc plate (11) and a C-shaped track (3) is provided on the arc plate (11); The lower part of the arc plate (11) is provided with reference positioning parts (16) in the middle and on both sides respectively. The reference positioning parts (16) are provided with reference bolt holes (13). The centers of the three reference bolt holes (13) are in the same arc. The upper part of the arc plate (11) is provided with wheel flange clamping mechanisms (4) through mounting ear plates (14). The measuring mechanism (2) includes a measuring bracket (21), a horizontal measuring ruler (22), and a digital dial indicator (23). The measuring bracket (21) includes a hand plate (211), a flat roller (212), and a track wheel (213). One side of the hand plate (211) is provided with a flat roller (212) that contacts the inner side of the rim (101), and a track wheel (213) that is adapted to the C-shaped track (3). The upper part of the hand plate (211) is provided with a horizontally adjustable horizontal measuring ruler (22). One end of the horizontal measuring ruler (22) is provided with a digital dial indicator (23) with the measuring end facing down. The measuring end of the digital dial indicator (23) is provided with a measuring roller (231).

2. The wheelset measuring device according to claim 1, characterized in that, The mounting ear plate (14) is provided with an elongated waist-shaped adjustment hole (15); the wheel flange clamping mechanism (4) includes an arc-shaped clamping block (41) and a locking bolt (42), the locking bolt (42) passing through the elongated waist-shaped adjustment hole (15) and connecting with the arc-shaped clamping block (41).

3. The wheelset measuring device according to claim 2, characterized in that, The centerline of the elongated adjustment hole (15) on the corresponding side is collinear with the centerline of the corresponding reference bolt hole (13).

4. The wheelset measuring device according to claim 1, characterized in that, The upper side of the handheld plate (211) is provided with a strip hole through which one end of the horizontal measuring ruler (22) passes; the top of the handheld plate (211) is provided with a first locking screw (214), and the horizontal measuring ruler (22) is locked by the first locking screw (214).

5. The wheelset measuring device according to claim 1, characterized in that, The horizontal measuring ruler (22) has a vertical through hole at one end, and the fixing cylinder at the bottom of the digital dial indicator (23) is locked by the second locking screw (221).

6. The wheelset measuring device according to claim 1, characterized in that, The arc plate (11) is a quarter-circle arc structure.

7. The wheelset measuring device according to claim 1, characterized in that, The arc plate (11), mounting ear plate (14), and reference positioning component (16) are integrally formed.

8. The wheelset measuring device according to claim 1, characterized in that, Multiple weight-reducing holes (12) are evenly distributed in the middle of the arc plate (11) along its arc direction.

Images