Four-wheel wear amount precise measuring device and method for walking chassis

Abstract

The application discloses a four-wheel track chassis wear amount precise measurement device and a measurement method, which comprises a driving wheel measurement tool, a depth measurement gauge, a track plate tread measurement tool and a track plate tooth measurement tool. The application aims to design special measurement tools for driving wheels, supporting wheels, supporting rollers, guide wheels and track plates, and to take the non-worn area of the components as the measurement reference, so as to convert the wear amount into an accurate distance or depth value. The measurement method directly calculates the quantitative wear amount by setting an initial reference value and comparing the measured value. The application completely solves the problems of non-uniform measurement reference, experience-dependent results and non-quantitative problems in the prior art, provides reliable data support for realizing predictive maintenance of equipment and making scientific decisions on component repair or replacement, and significantly improves the safety and the whole life cycle economy of the equipment.

Description

Technical Field

[0001] This invention relates to a precise measurement device and method for measuring the wear of the four wheels and one track of a walking chassis, belonging to the field of mining machinery testing technology. Background Technology

[0002] Large mining excavators are core equipment in open-pit mining, with their chassis accounting for 6%-8% of their total equipment. The "four wheels and one track" of this chassis experience extremely severe wear under harsh working conditions. Timely wear detection is crucial for preventing chassis failures, avoiding downtime losses, and safety accidents. Currently, the industry's methods for wear detection of the "four wheels and one track" generally suffer from the following technical shortcomings: 1. Lack of benchmarks: It mainly relies on manual visual inspection and experience judgment, or uses general measuring tools such as calipers and tape measures for rough measurement. There is a lack of unified and stable measurement benchmarks, which leads to measurement results that vary from person to person, have poor repeatability, and cannot form effective historical data for comparison.

[0003] 2. Inability to quantify: It is difficult to obtain accurate wear and tear data, which makes maintenance decisions (such as whether to replace or repair) lack a scientific basis. This often leads to "over-maintenance" causing waste, or "under-maintenance" creating hidden dangers.

[0004] 3. Inefficiency: For large, irregular parts, general measuring tools are inconvenient to operate, measurement points are difficult to locate, and the measurement process is cumbersome and time-consuming, which is not conducive to performing frequent periodic inspections.

[0005] In particular, with the development of remanufacturing technologies such as laser cladding, there is an urgent need for a method that can accurately determine the remaining lifespan of components and the timing of repair. Existing technologies cannot provide precise wear data to trigger repair actions, thus limiting the widespread application of advanced remanufacturing technologies. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a precise measurement device and method for the wear of four wheels and one track of a chassis. The aim is to design dedicated measuring fixtures for drive wheels, track rollers, carrier rollers, idler wheels, and track pads, using the unworn area of ​​the component itself as the measurement benchmark to convert wear into accurately readable spacing or depth values. The measurement method directly calculates the quantified wear by setting an initial benchmark value and comparing it with actual measured values. This invention completely solves the problems of inconsistent measurement benchmarks, reliance on experience, and inability to quantify results in existing technologies. It provides reliable data support for predictive maintenance and scientific decision-making regarding component repair or replacement, significantly improving equipment safety and overall lifecycle economics.

[0007] This invention is implemented according to the following technical solution: In a first aspect, the present invention provides a precise measuring device for the wear of four wheels and one track of a chassis, comprising: The drive wheel measuring fixture is used to insert into the groove between two adjacent drive wheel teeth in the drive wheel. The wear amount of the drive wheel teeth is obtained by measuring the change in the distance between the reference profile surface of the drive wheel measuring fixture and the outer edge of the meshing surface of the drive wheel teeth. A depth measuring instrument is used to detect the wear of the rims of support rollers, carrier rollers and guide rollers. The depth measuring instrument includes a horizontal support part and a vertical measuring part. The horizontal support part is placed on the rims on both sides. The wear of the rims is obtained by measuring the change in depth of the vertical measuring part into the unworn annular surface between the two rims. The track tread measuring fixture includes two support blocks and a second depth measuring instrument. The two support blocks are symmetrically placed on the track tread on both sides of the track teeth. The second depth measuring instrument includes a second horizontal support part and a second vertical measuring part. The second horizontal support part is placed on the support blocks on both sides after crossing the track teeth. The wear amount of the track tread is obtained by measuring the change in depth of the second vertical measuring part into the unworn area on the top surface of the track teeth. Track tooth measuring fixture is used to snap onto the track tooth. The wear amount of the track tooth is obtained by measuring the change in the distance between the reference profile surface of the track tooth measuring fixture and the outer edge of the meshing surface of the track tooth.

[0008] In some embodiments, the drive wheel measuring fixture is generally T-shaped plate structure. Each end of the horizontal part of the drive wheel measuring fixture has a protrusion on its bottom surface. The vertical part of the drive wheel measuring fixture is inserted into the groove between two adjacent drive wheel teeth. The two protrusions of the horizontal part are respectively in contact with the reference contact surface of the non-meshing area of ​​the top of the corresponding drive wheel teeth. The wear of the drive wheel teeth is obtained by measuring the change in the distance between the arc-shaped surface at the angle between the horizontal and vertical parts and the outer edge of the meshing surface of the drive wheel teeth. The arc-shaped surface at the angle constitutes the reference profile surface.

[0009] In some embodiments, a symmetrically arranged measuring notch is provided on each of the arc-shaped surfaces at the angle between the horizontal and vertical portions on both sides, and the measuring notch refers to the wear portion to be measured; And / or, the drive wheel measuring fixture is provided with at least one laterally extending strip hole.

[0010] In some embodiments, the vertical measuring part is mounted in the middle of the horizontal support part, and a sliding pair is formed between them. The vertical measuring part can slide up and down on the horizontal support part. The vertical measuring part is provided with uniformly alternating scales along its length.

[0011] In some embodiments, the two support blocks are cylindrical standard blocks, and the outer diameter of the cylindrical standard blocks is consistent with the inner arc dimension of the track tread surface; the vertical measuring part two is assembled in the middle of the horizontal support part two, and a sliding pair is formed between the two, and the vertical measuring part two can slide up and down on the horizontal support part two; the vertical measuring part two is provided with uniformly alternating scales along its length direction.

[0012] In some embodiments, the track tooth measuring fixture is generally in the shape of a ∩ plate. A protrusion is provided in the top center region of the inner ring surface of the track tooth measuring fixture. The track tooth measuring fixture is snapped onto the track tooth. The protrusion is in contact with the reference contact surface of the non-meshing area of ​​the top surface of the track tooth. The wear amount of the track tooth is obtained by measuring the change in the distance between the arc-shaped surface at the corner of the inner ring surface and the outer edge of the meshing surface of the track tooth by measuring the gauge. The arc-shaped surface at the corner constitutes the reference profile surface.

[0013] In some embodiments, a symmetrically arranged measuring notch is provided on the arc-shaped surface at the corner of the inner annular surface on both sides, and the measuring notch refers to the wear area to be measured. And / or, the track tooth measuring fixture is provided with at least one laterally extending strip hole.

[0014] Secondly, the present invention provides a method for accurately measuring the wear of the four wheels and one track of a chassis, which is implemented using the aforementioned measuring device: a. Measurement of drive wheel wear: Insert the drive wheel measuring fixture into the groove between two adjacent drive wheel teeth in the drive wheel. The protrusion on the drive wheel measuring fixture is in contact with the reference contact surface of the non-meshing area at the top of the drive wheel teeth. The distance between the reference profile surface of the drive wheel measuring fixture and the outer edge of the meshing surface of the drive wheel teeth is measured by the measuring tool as S. Then the wear of the drive wheel is δ_drive = S - S0, where S0 is the initial unworn clearance. b. Measurement of wear of support rollers, carrier rollers and guide rollers: Place the horizontal support part of the depth measuring instrument one on the worn wheel rims on both sides, and measure the depth H by extending the vertical measuring part of the depth measuring instrument one into the unworn annular surface between the two wheel rims. Then the wear of the wheel rim δ_roller = H0 - H, where H0 is the initial unworn depth. c. Track tread wear measurement: Place two support blocks on the worn track treads on both sides of the track teeth. Place the horizontal support part of the depth measuring instrument II across the track teeth on the support blocks on both sides. Measure the depth D by extending the vertical measuring part of the depth measuring instrument II into the reference contact surface of the non-meshing area at the top of the track teeth. Track tread wear δ_tread = D0 - D, where D0 is the initial unworn depth. d. Track tooth wear measurement: The track tooth measuring fixture is attached to the track tooth. The protrusion on the track tooth measuring fixture is in contact with the reference contact surface of the non-meshing area at the top of the track tooth. The distance between the reference profile surface of the track tooth measuring fixture and the outer edge of the meshing surface of the track tooth is measured by measuring tool as L. Then the track tooth wear δ_tooth = L - L0, where L0 is the initial unworn clearance. e. Wear condition assessment and decision-making: Compare the wear amount of each component measured in step a and b with the pre-stored threshold, and determine whether the component should continue to be used, be repaired, or be scrapped and replaced based on the comparison results.

[0015] In some embodiments, the thresholds pre-stored in step e include: the maximum allowable wear threshold T1 and the economic critical threshold T2 for laser cladding repair, where T2>T1; the decision logic is: If δ ≤ T1, the component can continue to be used; If T1 < δ ≤ T2, then laser cladding technology is recommended for repairing the component; If δ > T2, the component should be replaced.

[0016] In some embodiments, in step a, when the drive wheel measuring fixture is inserted into the groove, the distance between the drive wheel teeth sides opposite to the middle area of ​​the two sides or the bottom end of the drive wheel measuring fixture is first measured by a measuring tool, and the position of the drive wheel measuring fixture is finely adjusted until the distance on both sides is equal. In step c, when the track tread is not worn, the vertical measuring part 2 is inserted into the reference contact surface of the non-meshing area at the top of the track tooth. At this time, the scale on the vertical measuring part 2 is marked as 0. As the track tread wears, the two support blocks move down and the vertical measuring part 2 moves up. The amount of upward movement read is the amount of track tread wear. In step d, when the track tooth measuring fixture is attached to the track tooth, the distance between the middle area of ​​the two sides of the inner ring surface of the track tooth measuring fixture or the opposite side of the track tooth is first measured with a measuring tool. The position of the track tooth measuring fixture is then finely adjusted until the distance on both sides is equal.

[0017] Beneficial effects of this invention: 1. High measurement accuracy and consistency: The unified benchmark and dedicated tooling fundamentally eliminate human interference, ensuring accurate and reliable data that can be used for trend analysis and precise decision-making.

[0018] 2. Scientific decision-making: Quantified wear data provides a solid data foundation for condition-based maintenance, predictive maintenance, and remanufacturing repair of equipment, realizing the transformation from "experience-driven" to "data-driven" maintenance mode.

[0019] 3. Significant economic benefits: It avoids waste caused by premature replacement and provides early warning of potential failures. Furthermore, it provides a clear process trigger point for laser cladding repair, greatly extending the service life of high-value components and meeting the requirements of green manufacturing and a circular economy.

[0020] 4. Simple and efficient operation: Specialized tools make the measurement process simple and quick, lower the technical threshold for operators, and facilitate large-scale application in mine sites. Attached Figure Description

[0021] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the attached diagram: Figure 1 This is a schematic diagram of the chassis, including the four wheels and one belt. Figure 2 This is a schematic diagram of the drive wheel measuring fixture and the drive wheel measurement according to the present invention; Figure 3 This is a structural diagram of the drive wheel measuring fixture of the present invention; Figure 4 This is a schematic diagram of the depth measuring instrument and support roller of the present invention (a is a schematic diagram of the horizontal support part overlapping the two wheel flanges, and b is a schematic diagram of the vertical measuring part performing the measurement). Figure 5 This is a structural diagram of the depth measuring instrument of the present invention; Figure 6 This is a schematic diagram of the track tread measuring fixture and the measurement of the track tread surface according to the present invention; Figure 7 This is a schematic diagram of the track tooth measuring fixture and the track tooth measurement of the present invention; Figure 8 This is a detailed view of the track tooth measuring fixture and track tooth positioning of the present invention; Figure 9 This is a structural diagram of the track plate tooth measuring fixture of the present invention.

[0023] Attached diagram labels: 1. Drive wheel; 2. Left side tooth; 3. Right side tooth; 4. Drive wheel measuring fixture; 5. Track roller; 6. Depth measuring tool one; 7. Track plate; 8. Support block; 9. Depth measuring tool two; 10. Track plate tooth measuring fixture; 11. Guide wheel; 12. Support roller; 4-1. Convex point; 4-2. Convex point; 4-3. Reference profile surface; 4-4. Measurement notch; 4-5. Measurement notch; 5-1. Flange; 5-2. Flange; 7-1 Track shoe tread; 7-2 Track shoe tread; 7-3 Track shoe teeth; 10-1, Convex point; 10-2, Measurement notch; 10-3, Measurement notch; 10-4, Reference profile surface.

[0024] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Figure 1 A schematic diagram of the chassis with four wheels and one track is provided. The four wheels and one track mainly refer to the drive wheel 1, idler wheel 11, carrier roller 12, support roller 5, and track composed of multiple track plates 7. The purpose of this invention is to design a special measuring fixture for the drive wheel 1, idler wheel 11, carrier roller 12, support roller 5, and track plates 7, and to uniformly use the unworn area of ​​the component itself as the measurement benchmark to convert the wear amount into a accurately readable spacing or depth value.

[0029] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, this invention provides a precise measurement device for the wear of four wheels and one track of a chassis, including a drive wheel measuring fixture 4, a depth measuring gauge 6, a track tread measuring fixture, and a track tooth measuring fixture 10. The drive wheel measuring fixture 4 is inserted into the groove between two adjacent drive wheel teeth (left tooth 2 and right tooth 3) in the drive wheel 1. The wear of the drive wheel teeth is obtained by measuring the change in the distance between the reference profile surface 4-3 of the drive wheel measuring fixture 4 and the outer edge of the meshing surface of the drive wheel teeth. The depth measuring gauge 6 is used to detect the wear of the wheel rims of the support roller 5, the carrier roller, and the guide roller. The depth measuring gauge 6 includes a horizontal support part and a vertical measuring part. The horizontal support part is placed on the wheel rims 5-1 and 5-2 on both sides. The vertical measuring part measures the unworn annular portion extending into the space between the wheel rims 5-1 and 5-2 on both sides. The wear amount of the wheel flanges 5-1 and 5-2 is obtained by measuring the depth change of the track plate surface; the track plate tread measuring fixture includes two support blocks 8 and a depth measuring gauge 9. The two support blocks 8 are symmetrically placed on the track plate treads 7-1 and 7-2 on both sides of the track plate teeth 7-3. The depth measuring gauge 9 includes a horizontal support part and a vertical measuring part. The horizontal support part crosses the track plate teeth 7-3 and is placed on the support blocks 8 on both sides. The wear amount of the track plate treads 7-1 and 7-2 is obtained by measuring the depth change of the vertical measuring part into the unworn area of ​​the top surface of the track plate teeth 7-3; the track plate tooth measuring fixture 10 is used to snap onto the track plate teeth 7-3. The wear amount of the track plate teeth 7-3 is obtained by measuring the distance change between the reference profile surface 10-4 of the track plate tooth measuring fixture 7-3 and the outer edge of the meshing surface of the track plate teeth 7-3.

[0030] As can be seen from the above, the present invention completely solves the problems of inconsistent measurement benchmarks, reliance on experience, and inability to quantify results in the prior art. It provides reliable data support for predictive maintenance of equipment and scientific decision-making on component repair or replacement, and significantly improves equipment safety and the economy of the entire life cycle.

[0031] The following provides a further explanation of the specific structure of the aforementioned drive wheel measuring fixture.

[0032] like Figure 2 , Figure 3As shown, the drive wheel measuring fixture 4 has a T-shaped plate structure. Each end of the horizontal part of the drive wheel measuring fixture 4 has a protrusion 4-1 and 4-2 on its bottom surface. The vertical part of the drive wheel measuring fixture 4 is inserted into the groove between two adjacent drive wheel teeth (left tooth 2 and right tooth 3). The two protrusions 4-1 and 4-2 of the horizontal part are respectively in contact with the reference contact surface of the non-meshing area at the top of the corresponding drive wheel teeth. The wear of the drive wheel teeth is obtained by measuring the change in the distance between the arc surface at the angle between the horizontal and vertical parts and the outer edge of the meshing surface of the drive wheel teeth. The arc surface at the angle constitutes the reference profile surface 4-3.

[0033] Further plans will continue to be considered. Figure 2 , Figure 3 As shown, symmetrically arranged measuring notches 4-4 and 4-5 are provided on the arc-shaped surface at the angle between the horizontal and vertical sections on both sides. The areas indicated by measuring notches 4-4 and 4-5 are the wear areas to be measured. It should be noted that the positions indicated by measuring notches 4-4 and 4-5 are usually the areas with the most severe wear, which facilitates the accurate measurement of the actual wear amount by the steel ruler. Figure 2 The spacing indicated by D1 and D2.

[0034] In a further embodiment, the drive wheel measuring fixture 4 is provided with at least one laterally extending strip hole. The strip hole is designed to facilitate the operator to hold the drive wheel measuring fixture 4 and place it into the groove during measurement.

[0035] The following provides a further explanation of the specific structure of the aforementioned depth measurement instrument.

[0036] like Figure 4 , Figure 5 As shown, the vertical measuring part is assembled in the middle of the horizontal support part, and a sliding pair is formed between the two. The vertical measuring part can slide up and down on the horizontal support part. The vertical measuring part has uniformly alternating scales along its length.

[0037] It should be noted that the depth measuring instrument 6 can directly use vernier calipers, digital depth gauges, or special depth gauges.

[0038] Figure 4 Only a schematic diagram of the wear measurement of the flange of the support roller 5 is given. The measurement methods of the support roller and the guide roller are the same as those of the support roller, and will not be described in detail here.

[0039] The following provides a further explanation of the specific structure of the track tread measuring fixture mentioned above.

[0040] like Figure 6As shown, the two support blocks 8 are cylindrical standard blocks, and the outer diameter of the cylindrical standard blocks is consistent with the inner arc size of the track tread surfaces 7-1 and 7-2; the vertical measuring part 2 is assembled in the middle of the horizontal support part 2, and a sliding pair is formed between the two, so that the vertical measuring part 2 can slide up and down on the horizontal support part 2; the vertical measuring part 2 has uniformly alternating scales along its length direction.

[0041] It should be noted that depth measuring instrument 29 can directly use vernier calipers, digital depth gauges, or special depth gauges.

[0042] The following provides a further explanation of the specific structure of the track tooth measuring fixture mentioned above.

[0043] like Figure 7 , Figure 8 , Figure 9 As shown, the track tooth measuring fixture 10 has an overall U-shaped plate structure. A protrusion 10-1 is provided in the top center area of ​​the inner ring surface of the track tooth measuring fixture 10. The track tooth measuring fixture 10 is snapped onto the track tooth 7-3. The protrusion 10-1 is in contact with the reference contact surface of the non-meshing area of ​​the top surface of the track tooth 7-3. The wear amount of the track tooth 7-3 is obtained by measuring the change in the distance between the arc surface at the corner of the inner ring surface and the outer edge of the meshing surface of the track tooth. The arc surface at the corner constitutes the reference profile surface 10-4.

[0044] Further plans will continue to be considered. Figure 8 , Figure 9 As shown, symmetrically arranged measuring notches 10-2 and 10-3 are provided on the arc-shaped surfaces at the corners of the inner annular surfaces on both sides. The areas indicated by measuring notches 10-2 and 10-3 are the wear areas to be measured. It should be noted that the positions indicated by measuring notches 10-2 and 10-3 are usually the areas with the most severe wear, which facilitates the accurate measurement of the actual wear amount by the steel ruler. Figure 8 The spacing indicated by D1 and D2.

[0045] A further embodiment includes a track tooth measuring fixture 10 with at least one laterally extending strip hole. The strip hole facilitates the operator's gripping of the track tooth measuring fixture 10 and its engagement with the track tooth 7-3 during measurement.

[0046] As can be seen from the above, the present invention provides a precise measurement device for the wear of four wheels and one track of a walking chassis, realizing rapid, accurate and traceable quantitative detection of wear. It defines a geometric feature that will not wear during the normal service cycle for each vulnerable component of the "four wheels and one track" as a measurement benchmark. By designing special tooling, the wear of moving parts is converted and fixed into a static dimensional change that is easy to measure relative to the benchmark.

[0047] This invention also provides a method for accurately measuring the wear of the four wheels and one track of a chassis, comprising the following steps: a. Drive wheel wear measurement: Insert the drive wheel measuring fixture into the groove between two adjacent drive wheel teeth. The protrusion on the drive wheel measuring fixture is in contact with the reference contact surface of the non-meshing area at the top of the drive wheel teeth. The distance S between the reference profile surface of the drive wheel measuring fixture and the outer edge of the meshing surface of the drive wheel teeth is measured by a measuring tool. Then, the wear amount of the drive wheel δ_drive = S - S0, where S0 is the initial unworn clearance. The drive wheel measuring fixture is designed with two measuring notches located on both sides of the teeth, which are the areas with the most severe wear, to facilitate accurate measurement of the actual wear amount. b. Measurement of wear of support rollers, carrier rollers and guide rollers: Place the horizontal support part of the depth measuring instrument one on the worn wheel rims on both sides, and measure the depth H by extending the vertical measuring part of the depth measuring instrument one into the unworn annular surface between the two wheel rims. Then the wear of the wheel rim δ_roller = H0 - H, where H0 is the initial unworn depth. c. Track tread wear measurement: Place two support blocks on the worn track treads on both sides of the track teeth. Place the horizontal support part of the depth measuring instrument II across the track teeth on the support blocks on both sides. Measure the depth D by extending the vertical measuring part of the depth measuring instrument II into the reference contact surface of the non-meshing area at the top of the track teeth. Track tread wear δ_tread = D0 - D, where D0 is the initial unworn depth. d. Track tooth wear measurement: The track tooth measuring fixture is attached to the track tooth. The protrusions on the track tooth measuring fixture are in contact with the reference contact surface of the non-meshing area at the top of the track tooth. The distance L between the reference profile surface of the track tooth measuring fixture and the outer edge of the meshing surface of the track tooth is measured by measuring tool. Then the track tooth wear δ_tooth = L - L0, where L0 is the initial unworn clearance. The track tooth measuring fixture is designed with two measuring notches located on both sides of the tooth, which are the areas with the most severe wear, to facilitate accurate measurement of the actual wear. e. Wear condition assessment and decision-making: Compare the wear amount of each component measured in step a and b with the pre-stored threshold, and determine whether the component should continue to be used, be repaired, or be scrapped and replaced based on the comparison results.

[0048] A further proposed approach involves pre-storing the following thresholds in step e: the maximum permissible wear threshold T1 and the economically critical threshold T2 for laser cladding repair, where T2 > T1; the decision logic is as follows: If δ ≤ T1, the component can continue to be used; If T1 < δ ≤ T2, then laser cladding technology is recommended for repairing the component; If δ > T2, the component should be replaced.

[0049] In a further step, during step a, when the drive wheel measuring fixture is inserted into the groove, the distance between the middle areas of both sides of the drive wheel measuring fixture and the opposite sides of the drive wheel teeth is first measured using a measuring tool. The position of the drive wheel measuring fixture is then finely adjusted until the distances on both sides are equal. The purpose of this measurement is to ensure that the drive wheel measuring fixture is in the same position when measuring both the unworn and worn distances, thereby increasing the accuracy of the measurement.

[0050] In a further embodiment, in step c, when the track tread is not worn, the second vertical measuring unit is inserted into the reference contact surface of the non-meshing area at the top of the track teeth. At this time, the scale on the second vertical measuring unit is marked as 0. As the track tread wears, the two support blocks move down, and the second vertical measuring unit moves up accordingly. The amount of upward movement read is the amount of wear on the track tread.

[0051] A further approach involves, in step d, when the track tooth measuring fixture is attached to the track tooth, first measuring the distance between the middle areas of the two sides of the inner ring surface of the measuring fixture and the corresponding sides of the track tooth using a measuring tool. Then, fine-tuning the position of the measuring fixture is performed until the distances on both sides are equal. The purpose of this measurement is to ensure that the measuring fixture is positioned correctly when measuring both the unworn and worn distances, thereby increasing measurement accuracy.

[0052] The following description, in conjunction with the accompanying drawings, uses the drive wheel and track tread of an ultra-large tonnage mining excavator as an example to further illustrate the embodiments of the present invention.

[0053] Example 1: Drive wheel wear measurement 1. The operator places the drive wheel measuring fixture 4 ( Figure 3 The reference contact surfaces (corresponding to protrusions 4-1 and 4-2) are tightly fitted onto the unworn areas at the top of the left tooth 2 and right tooth 3 of the drive wheel 1. Figure 2 (As shown).

[0054] 2. At this point, observe and use a measuring tool to measure the actual distance S between the reference profile surface 4-3 of the drive wheel measuring tool 4 and the outer edge of the drive wheel tooth meshing surface. Assume that S = 8.2mm is measured.

[0055] 3. It is known that the initial measuring gap S0 of the driving wheel measuring fixture 4 is 5mm.

[0056] 4. The wear amount on one side of drive wheel 1 is δ_drive = 8.2mm - 5mm = 3.2mm.

[0057] Example 2: Track tread wear measurement 1. Place two support blocks 8 (i.e., cylindrical standard blocks of the same height) on the worn areas of the tread surfaces 7-1 and 7-2 on both sides of the track shoe teeth 7-3 ( Figure 6 as shown).

[0058] 2. Slightly adjust the position of the cylindrical standard block so that the outer arc surface of the cylinder fits the inner arc surfaces of the tread surfaces 7-1 and 7-2 of the track shoe.

[0059] 3. The horizontal support part two of the depth measuring tool two 8 straddles on the two cylindrical standard blocks, ensuring that the bottom surfaces on both sides are tangent to the top ends of the cylindrical standard blocks. At this time, the vertical measuring part two touches the unworn area of the top of the track shoe tooth and moves upward.

[0060] 4. Read the depth indication D1 of the depth measuring tool two 8. Assume D1 = 4.5 mm. This value of 4.5 mm is the wear amount δ_tread of the track shoe tread.

[0061] Decision application: Assume that the maximum allowable wear threshold T1 of the drive wheel and track shoe of this type of equipment is 10 mm, and the laser cladding repair critical value T2 is 10 mm. It is measured that δ_drive = 3.2 mm < T1, so it is judged that the drive wheel can continue to be used; it is measured that δ_tread = 4.5 mm, which is also much less than T1, and the track shoe can also be used safely.

[0062] In summary, the present invention provides a precise measurement device and measurement method for the wear amount of the four wheels and one belt of a walking chassis, achieving the following functions and effects: 1. High measurement accuracy and consistency: The unified benchmark and special tooling fundamentally eliminate the interference of human factors, ensure accurate and reliable data, and can be used for trend analysis and precise decision-making.

[0063] 2. Scientific decision-making: The quantified wear data provides a solid data foundation for the condition-based maintenance, predictive maintenance, and remanufacturing repair of equipment, realizing the transformation of the maintenance mode from "experience-driven" to "data-driven".

[0064] 3. Significant economic benefits: It can not only avoid waste caused by premature replacement but also warn of potential failures. At the same time, it provides a clear process trigger point for laser cladding repair, greatly extending the service life of high-value components, meeting the requirements of green manufacturing and circular economy.

[0065] 4. Simple and efficient operation: The special tool makes the measurement process simple and fast, reduces the technical threshold of the operator, and is conducive to large-scale promotion and application at the mine site.

[0066] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0067] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A precise measuring device for the wear of four wheels and one track of a chassis, characterized in that, include: The drive wheel measuring fixture is used to insert into the groove between two adjacent drive wheel teeth in the drive wheel. The wear amount of the drive wheel teeth is obtained by measuring the change in the distance between the reference profile surface of the drive wheel measuring fixture and the outer edge of the meshing surface of the drive wheel teeth. A depth measuring instrument is used to detect the wear of the rims of support rollers, carrier rollers and guide rollers. The depth measuring instrument includes a horizontal support part and a vertical measuring part. The horizontal support part is placed on the rims on both sides. The wear of the rims is obtained by measuring the change in depth of the vertical measuring part into the unworn annular surface between the two rims. The track tread measuring fixture includes two support blocks and a second depth measuring instrument. The two support blocks are symmetrically placed on the track tread on both sides of the track teeth. The second depth measuring instrument includes a second horizontal support part and a second vertical measuring part. The second horizontal support part is placed on the support blocks on both sides after crossing the track teeth. The wear amount of the track tread is obtained by measuring the change in depth of the second vertical measuring part into the unworn area on the top surface of the track teeth. Track tooth measuring fixture is used to snap onto the track tooth. The wear amount of the track tooth is obtained by measuring the change in the distance between the reference profile surface of the track tooth measuring fixture and the outer edge of the meshing surface of the track tooth.

2. The precise measurement device for the wear of four wheels and one track of a chassis according to claim 1, characterized in that: The drive wheel measuring fixture has a T-shaped plate structure. Each end of the horizontal part of the drive wheel measuring fixture has a protrusion on its bottom surface. The vertical part of the drive wheel measuring fixture is inserted into the groove between two adjacent drive wheel teeth. The two protrusions of the horizontal part are respectively in contact with the reference contact surface of the non-meshing area of ​​the top of the corresponding drive wheel teeth. The wear of the drive wheel teeth is obtained by measuring the change in the distance between the arc-shaped surface at the angle between the horizontal and vertical parts and the outer edge of the meshing surface of the drive wheel teeth. The arc-shaped surface at the angle constitutes the reference profile surface.

3. The precise measurement device for the wear of four wheels and one track of a chassis according to claim 2, characterized in that: A symmetrically arranged measuring notch is provided on each of the arc-shaped surfaces at the angle between the horizontal and vertical parts on both sides. The measuring notch refers to the wear area to be measured. And / or, the drive wheel measuring fixture is provided with at least one laterally extending strip hole.

4. The precise measurement device for wear of four wheels and one track of a chassis according to claim 1, characterized in that: The vertical measuring part is assembled in the middle of the horizontal support part, and a sliding pair is formed between the two. The vertical measuring part can slide up and down on the horizontal support part. The vertical measuring part has uniformly alternating scales along its length.

5. The precise measurement device for the wear of four wheels and one track of a chassis according to claim 1, characterized in that: The two support blocks are standard cylindrical blocks, and the outer diameter of the standard cylindrical blocks is consistent with the inner arc dimension of the track tread surface; The vertical measuring part 2 is assembled in the middle of the horizontal support part 2, and a sliding pair is formed between the two. The vertical measuring part 2 can slide up and down on the horizontal support part 2. The vertical measuring part 2 has uniformly alternating scales along its length direction.

6. The precise measurement device for the wear of four wheels and one track of a chassis according to claim 1, characterized in that: The track tooth measuring fixture has an overall U-shaped plate structure. A protrusion is provided in the top center area of ​​the inner ring surface of the track tooth measuring fixture. The track tooth measuring fixture is snapped onto the track tooth. The protrusion is in contact with the reference contact surface of the non-meshing area of ​​the top surface of the track tooth. The wear amount of the track tooth is obtained by measuring the change in the distance between the arc-shaped surface at the corner of the inner ring surface and the outer edge of the meshing surface of the track tooth. The arc-shaped surface at the corner constitutes the reference profile surface.

7. The precise measurement device for the wear of four wheels and one track of a chassis according to claim 6, characterized in that: A symmetrically arranged measuring notch is provided on the arc-shaped surface at the corner of the inner ring surface on both sides. The measuring notch refers to the wear area to be measured. And / or, the track tooth measuring fixture is provided with at least one laterally extending strip hole.

8. A method for accurately measuring the wear of the four wheels and one track of a chassis, characterized in that, The implementation shall be carried out using the measuring device according to any one of claims 1 to 7: a. Measurement of drive wheel wear: Insert the drive wheel measuring fixture into the groove between two adjacent drive wheel teeth in the drive wheel. The protrusion on the drive wheel measuring fixture is in contact with the reference contact surface of the non-meshing area at the top of the drive wheel teeth. The distance between the reference profile surface of the drive wheel measuring fixture and the outer edge of the meshing surface of the drive wheel teeth is measured by the measuring tool as S. Then the wear of the drive wheel is δ_drive = S - S0, where S0 is the initial unworn clearance. b. Measurement of wear of support rollers, carrier rollers and guide rollers: Place the horizontal support part of the depth measuring instrument one on the worn wheel rims on both sides, and measure the depth H by extending the vertical measuring part of the depth measuring instrument one into the unworn annular surface between the two wheel rims. Then the wear of the wheel rim δ_roller = H0 - H, where H0 is the initial unworn depth. c. Track tread wear measurement: Place two support blocks on the worn track treads on both sides of the track teeth. Place the horizontal support part of the depth measuring instrument II across the track teeth on the support blocks on both sides. Measure the depth D by extending the vertical measuring part of the depth measuring instrument II into the reference contact surface of the non-meshing area at the top of the track teeth. Track tread wear δ_tread = D0 - D, where D0 is the initial unworn depth. d. Track tooth wear measurement: The track tooth measuring fixture is attached to the track tooth. The protrusion on the track tooth measuring fixture is in contact with the reference contact surface of the non-meshing area at the top of the track tooth. The distance between the reference profile surface of the track tooth measuring fixture and the outer edge of the meshing surface of the track tooth is measured by measuring tool as L. Then the track tooth wear δ_tooth = L -L0, where L0 is the initial unworn clearance. e. Wear condition assessment and decision-making: Compare the wear amount of each component measured in step a and b with the pre-stored threshold, and determine whether the component should continue to be used, be repaired, or be scrapped and replaced based on the comparison results.

9. The measurement method according to claim 8, characterized in that: The pre-stored thresholds in step e include: the maximum allowable wear threshold T1 and the economic critical threshold T2 for laser cladding repair, where T2 > T1; the decision logic is as follows: If δ ≤ T1, the component can continue to be used; If T1 < δ ≤ T2, then laser cladding technology is recommended for repairing the component; If δ > T2, the component should be replaced.

10. The measurement method according to claim 8, characterized in that: In step a, when the drive wheel measuring fixture is inserted into the groove, the distance between the middle area of ​​the two sides or the bottom of the drive wheel measuring fixture and the opposite side of the drive wheel teeth is first measured with a measuring tool. The position of the drive wheel measuring fixture is then finely adjusted until the distance on both sides is equal. In step c, when the track tread is not worn, the vertical measuring part 2 is inserted into the reference contact surface of the non-meshing area at the top of the track tooth. At this time, the scale on the vertical measuring part 2 is marked as 0. As the track tread wears, the two support blocks move down and the vertical measuring part 2 moves up. The amount of upward movement read is the amount of track tread wear. In step d, when the track tooth measuring fixture is attached to the track tooth, the distance between the middle area of ​​the two sides of the inner ring surface of the track tooth measuring fixture or the opposite side of the track tooth is first measured with a measuring tool. The position of the track tooth measuring fixture is then finely adjusted until the distance on both sides is equal.

Images