Railway wagon axle length detection sample plate

Abstract

The utility model discloses a railway freight car axle length detection template, comprising a measuring tool main body, a measuring reference support plate which is arranged at the left end of the measuring tool main body, extends downwards and vertically and can abut against the end face of a freight car axle, and a plurality of detection tolerance strips which are arranged at a gap at the bottom edge of the measuring tool main body and abut against freight car axle detection points in a one-to-one correspondence manner. The bottom edge of the measuring tool main body is matched with the outer contour of the wagon axle, and compared with the replacement measurement of two measuring scales, one railway wagon axle length detection sample plate can be adopted to carry out synchronous one-time measurement on a plurality of wagon axle detection points. The three-diameter detection device has the advantages of satisfactory measurement precision, high measurement efficiency, ingenious conception, reasonable design and the like, and is suitable for three-diameter detection of large-scale axle production.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway freight car axle length detection, and in particular relates to a railway freight car axle length detection sample plate. Background Art

[0002] In the current three-diameter inspection process of railway freight car axles, the operator must use a vernier depth gauge to inspect the axle neck length, and use an axle length gauge to inspect the distance between the axle end and the front shoulder of the wheel seat and the distance between the axle end and the rear shoulder of the wheel seat. However, since the accuracy of the vernier depth gauge is 0.02mm, it does not match the dimensional accuracy of the axle neck length tolerance of 2mm, which is an over-measurement. In addition, although the vernier depth gauge can meet the inspection requirements for measuring the axle neck length, it is not intuitive and has low inspection efficiency, which is not conducive to improving production efficiency. Then two different rulers are needed to measure the three diameters. The staff frequently change the rulers, which is inconvenient to operate, the inspection speed is slow, and the inspection variety is single. Therefore, it is not suitable for three-diameter inspection of large-scale axle production. Utility Model Content

[0003] The utility model aims to provide a railway freight car axle length detection template, which is easy to operate and has high detection efficiency, and solves the problems of excessive measurement caused by the existing vernier depth gauge for detecting the axle neck length and low detection efficiency caused by replacing two rulers for measurement.

[0004] To this end, the technical solution adopted by the utility model is: a railway truck axle length detection template, including a measuring tool body, a measuring reference support plate located at the left end of the measuring tool body and extending vertically downward and able to resist the end face of the truck axle, and a plurality of detection tolerance strips located at the notch at the bottom edge of the measuring tool body and corresponding one-to-one with the detection points of the truck axle, and the bottom edge of the measuring tool body matches the outer contour of the truck axle.

[0005] As a preferred embodiment of the above scheme, the truck axle includes a journal, a dustproof plate seat and a wheel seat. From left to right, the distance between the inspection tolerance strip and the measurement reference support plate corresponds to the length of the journal, the distance between the shaft end and the front shoulder of the wheel seat, and the distance between the shaft end and the rear shoulder of the wheel seat. The design is reasonable, so that the three dimensions can be uniformly measured with a ruler.

[0006] Further preferably, the bottom edge of the measuring tool body is provided with a bevel that can match the front and rear transition slopes of the dust shield seat, so that the transition length between the shaft neck and the dust shield seat and the transition length between the dust shield seat and the wheel seat can be detected. The design is reasonable and can achieve synchronous measurement of five dimensions at one time, with efficient measurement.

[0007] More preferably, the detection tolerance bar width is 1.5 mm to 2 mm, which meets the measurement accuracy requirement and effectively avoids excessive measurement using a vernier caliper.

[0008] Further preferably, the length of the measurement reference support plate is greater than the radius of the journal, thereby ensuring firmness after bonding.

[0009] More preferably, the detection tolerance strip located at the rightmost end is flush with the right side of the measuring tool body, which is reasonably designed to avoid material waste.

[0010] More preferably, the left side width of the measuring tool body is greater than the diameter of the shaft neck, so as to ensure that there is enough space for taking it and it is convenient to take it and use.

[0011] Beneficial effects of the utility model:

[0012] (1) Compared with the existing vernier depth gauge for detecting the axle neck length, this solution uses a detection tolerance bar with a set width for detection. At present, since the tolerance of the axle size of trucks is 2mm, a detection tolerance bar with a width of 2mm can be set. When the detection point falls on the detection tolerance bar, the measurement process is clear at a glance, indicating that it meets the factory requirements and the measurement accuracy meets the requirements, effectively avoiding excessive measurement and waste of manpower.

[0013] (2) Compared with the measurement by replacing two measuring rulers, this scheme uses a railway truck axle length detection template to measure multiple truck axle detection points simultaneously, effectively improving the measurement efficiency and reducing the detection task volume. It is suitable for the three-diameter detection of large-scale axle production, with ingenious conception and reasonable design. It not only meets the requirements of simultaneous detection of three-diameter dimensions, but also detects the transition between the axle neck and the dustproof plate seat and the transition between the dustproof plate seat and the wheel seat, greatly improving the detection speed; the integration of several detection measuring tools reduces the detection cost. According to actual measurements, it can improve work efficiency by more than 50%, reduce the work intensity of workers by 50%, and reduce the detection cost by 50%. It is an ideal detection measuring tool for the three-diameter of railway truck axles.

[0014] In summary, the method has the advantages of meeting the measurement accuracy requirements, high measurement efficiency, suitability for three-diameter detection in mass axle production, ingenious conception, and reasonable design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 for Figure 1 A partial enlarged view of point A.

[0017] Figure 3 This is a schematic diagram of the structure of a truck axle. DETAILED DESCRIPTION

[0018] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0019] Combination Figure 1 — Figure 3 As shown, a railway truck axle length detection template is composed of a measuring tool body 1, a measuring reference support plate 2 located at the left end of the measuring tool body 1 and extending vertically downward and capable of abutting against the end face of the truck axle 4, and a plurality of detection tolerance strips 3 located at the notch at the bottom edge of the measuring tool body 1 and abutting against the detection points of the truck axle 4 one by one.

[0020] The bottom edge of the measuring tool body 1 matches the outer contour of the truck axle 4 .

[0021] The truck axle 4 is mainly composed of a journal 41 , a dust plate seat 42 and a wheel seat 43 .

[0022] The bottom edge of the measuring tool body 1 is provided with a bevel 5 which can match the front and rear transition slopes of the dustproof plate seat 42, so as to detect the transition length between the journal 41 and the dustproof plate seat 42 and the transition length between the dustproof plate seat 42 and the wheel seat 43.

[0023] The left side width of the measuring tool body 1 is greater than the diameter of the journal 41 .

[0024] The length of the measuring reference support plate 2 is greater than the radius of the journal 41 .

[0025] From left to right, the distance between the tolerance strip 3 and the measuring reference support plate 2 corresponds to the length of the journal 41, the distance between the shaft end and the front shoulder of the wheel seat 43, and the distance between the shaft end and the rear shoulder of the wheel seat 43.

[0026] The width of the detection tolerance strip 3 is preferably 1.5 mm to 2 mm.

[0027] The detection tolerance strip 3 at the far right end is flush with the right side of the measuring tool body 1 .

[0028] RE 2B The length of the journal 41 of the semi-finished truck axle is The distance between the shaft end and the front shoulder of the wheel seat 43 is The distance between the shaft end and the rear shoulder of the wheel seat 43 is 475.5±1mm.

[0029] The railway truck axle length detection template is designed and produced according to the semi-finishing drawing of the truck axle. The tolerance of the length of the journal 41 is 2mm, the tolerance of the distance between the shaft end and the front shoulder of the wheel seat 43 is 2mm, and the tolerance of the distance between the shaft end and the rear shoulder of the wheel seat 43 is 2mm. When measurement is required, the railway truck axle length detection template can be directly fitted against the shaft end face of the truck axle 4.

[0030] It not only meets the requirement of detecting three diameters at the same time, but also detects two dimensions of the transition slope width between the journal 41 and the dustproof plate seat 42 and between the dustproof plate seat 42 and the wheel seat 43 at the same time.

Claims

1. A railway freight car axle length detection sample, characterized by: The invention comprises a measuring tool body (1), a measuring reference support plate (2) located at the left end of the measuring tool body (1) and extending vertically downward and capable of abutting against the end face of a truck axle (4), and a plurality of detection tolerance strips (3) located at the notch at the bottom edge of the measuring tool body (1) and abutting against detection points of the truck axle (4) in a one-to-one correspondence, wherein the bottom edge of the measuring tool body (1) matches the outer contour of the truck axle (4).

2. A railway freight car axle length detection sample according to claim 1, characterized in that: The truck axle (4) comprises an axle journal (41), a dust plate seat (42) and a wheel seat (43), and the distance between the detection tolerance strip (3) and the measurement reference support plate (2) corresponds to the length of the axle journal (41), the distance between the axle end and the front shoulder of the wheel seat (43), and the distance between the axle end and the rear shoulder of the wheel seat (43) from left to right.

3. A railway freight car axle length detection sample according to claim 2, characterized in that: The bottom edge of the measuring tool body (1) is provided with a bevel (5) that can match the front and rear transition slopes of the dustproof plate seat (42), so that the transition length between the journal (41) and the dustproof plate seat (42) and the transition length between the dustproof plate seat (42) and the wheel seat (43) can be detected.

4. A railway freight car axle length detection sample according to claim 1, characterized in that: The detection tolerance strip (3) has a width of 1.5 mm to 2 mm.

5. A railway freight car axle length detection sample according to claim 2, characterized in that: The length of the measurement reference support plate (2) is greater than the radius of the journal (41).

6. A railway freight car axle length detection sample according to claim 1, characterized in that: The detection tolerance strip (3) located at the far right end is flush with the right side of the measuring tool body (1).

7. A railway freight car axle length detection sample according to claim 2, characterized in that: The left side width of the measuring tool body (1) is greater than the diameter of the journal (41).

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