An instrument for measuring the defect depth of wheelset tread and axle body of EMU

Abstract

The present invention relates to the field of wheel measurement for EMUs, and more specifically, to an EMU wheel set tread and axle body defect depth measuring instrument, which has the characteristics of high measurement data accuracy, convenient reading, high strength, corrosion resistance, and compact size. The measurement principle fully complies with the standard, and can achieve non-dead angle defect depth measurement of the wheel tread compared to the existing DCLJ wheel set inspection ruler, while having the characteristics of simple operation, quick data reading, and stable and reliable use. The measuring instrument also combines the functions of an axle body damage depth inspection instrument. The handle is connected to the axle body reference platform, and the handle is connected to the handle. The axle body reference platform is provided with a rim inner side reference surface, and a rim reference platform is provided on one side of the rim inner side reference surface, and the ruler is connected to the rim reference platform; the ruler is provided with a ruler slider, which is fixed by a slider locking nut, and the ruler slider is provided with a gauge fixing bracket, and the gauge fixing bracket is provided with a dial gauge and a gauge probe.

Description

Technical Field

[0001] The invention relates to the field of EMU wheel measurement, and more particularly to an EMU wheel pair tread and axle body defect depth measuring instrument. Background Art

[0002] This product is an instrument for measuring the depth of the damaged parts of the tread or axle body of railway locomotives and vehicles when they are hit or collided by foreign objects. The instrument has the characteristics of simple use and high measurement accuracy. Compared with the existing fourth type of inspector and DCLJ wheel inspection ruler, the instrument can measure the entire wheel tread without dead angles. The instrument also adds the function of measuring the depth of axle body damage, and the measurement data accuracy can reach 0.01mm, so a EMU wheel tread and axle body defect depth measuring instrument is designed. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a wheel set tread and axle body defect depth measuring instrument for EMUs, which has the characteristics of high measurement data accuracy, convenient reading, high strength, corrosion resistance and compact size. The measurement principle fully complies with the standard, and compared with the existing DCLJ wheel set inspection ruler, it can realize the defect depth measurement of the wheel set tread without dead angles, and at the same time has the characteristics of simple operation, quick data reading, stable and reliable use. The measuring instrument also combines the functions of the axle body damage depth inspection instrument.

[0004] In order to solve the above technical problems, the present invention relates to the field of EMU wheel measurement, and more specifically, an EMU wheel tread and axle body defect depth measuring instrument, including an axle body reference platform, a handle, a handle, a dial gauge, a ruler, a gauge locking nut, a slider locking nut, a ruler slider, a gauge probe, a rim reference platform, a gauge rotating locking nut, a rim inner side reference surface and a gauge fixing bracket, which has the characteristics of high measurement data accuracy, convenient reading, high strength, corrosion resistance and compact size. The measurement principle is completely in line with the standards, and compared with the existing DCLJ wheelset inspection ruler, it can realize the measurement of the defect depth of the wheelset tread without dead angles, and it has the characteristics of simple operation, quick data reading, stable and reliable use. The measuring instrument also combines the functions of an axle body damage depth inspection instrument.

[0005] The carrying handle is connected to the shaft body reference platform, the handle is connected to the carrying handle, the shaft body reference platform is provided with a rim inner side reference surface, a rim reference platform is provided on one side of the rim inner side reference surface, and the ruler is connected to the rim reference platform; the ruler is provided with a ruler slider, the ruler slider is fixed by a slider locking nut, the ruler slider is provided with a header fixing bracket, and the header fixing bracket is provided with a dial gauge head and a header probe.

[0006] As a further optimization of the technical solution, the material of the handle described in the EMU wheelset tread and axle body defect depth measuring instrument of the present invention is silicone.

[0007] As a further optimization of the technical solution, the scale of the EMU wheelset tread and axle body defect depth measuring instrument of the present invention is perpendicular to the rim inner side surface reference plane.

[0008] As a further optimization of the technical solution, the axis center line of the gauge probe described in the EMU wheelset tread and axle body defect depth measuring instrument of the present invention is perpendicular to the axis center line of the gauge fixing bracket.

[0009] As a further optimization of the technical solution, the gauge head locking nut, gauge head rotating locking nut and gauge head fixing bracket described in the EMU wheelset tread and axle body defect depth measuring instrument of the present invention share a common center line.

[0010] The beneficial effects of the EMU wheel set tread and axle body defect depth measuring instrument of the present invention are:

[0011] The present invention provides a wheel set tread and axle body defect depth measuring instrument for EMUs, which has the characteristics of high measurement data accuracy, convenient reading, high strength, corrosion resistance, and compact size. The measurement principle fully complies with the standard, and compared with the existing DCLJ wheel set inspection ruler, it can achieve wheel set tread defect depth measurement without dead angles, and has the characteristics of simple operation, quick data reading, stable and reliable use. The measuring instrument also combines the function of the axle body damage depth inspection instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0013] Figure 1 The present invention is a schematic structural diagram of an instrument for measuring the tread and axle body defects of a motor vehicle wheelset.

[0014] In the figure: the shaft body reference platform 1; the carrying handle 2; the handle 3; the dial indicator 4; the ruler 5; the indicator locking nut 6; the slider locking nut 7; the ruler slider 8; the indicator probe 9; the wheel rim reference platform 10; the indicator rotating locking nut 11; the inner side reference surface of the wheel rim 12; the indicator fixing bracket 13. DETAILED DESCRIPTION Specific implementation method:

[0016] Combine the following Figure 1This embodiment is described. The present invention relates to the field of EMU wheel measurement, and more specifically, is an EMU wheel set tread and axle body defect depth measuring instrument, including an axle body reference platform 1, a handle 2, a handle 3, a dial gauge 4, a ruler 5, a gauge locking nut 6, a slider locking nut 7, a ruler slider 8, a gauge probe 9, a rim reference platform 10, a gauge rotating locking nut 11, a rim inner side reference surface 12 and a gauge fixing bracket 13, which has the characteristics of high measurement data accuracy, convenient reading, high strength, corrosion resistance and compact size. The measurement principle is completely in line with the standard. Compared with the existing DCLJ wheelset inspection ruler, it can realize the measurement of the defect depth of the wheelset tread without dead angles. At the same time, it has the characteristics of simple operation, quick data reading, stable and reliable use. The measuring instrument also combines the functions of the axle body damage depth inspection instrument.

[0017] The handle 2 is connected to the shaft body reference platform 1, the handle 3 is connected to the handle 2, the shaft body reference platform 1 is provided with a rim inner side reference surface 12, and a rim reference platform 10 is provided on one side of the rim inner side reference surface 12, and the ruler 5 is connected to the rim reference platform 10; the ruler 5 is provided with a ruler slider 8, the ruler slider 8 is fixed by a slider locking nut 7, the ruler slider 8 is provided with a gauge fixing bracket 13, and the gauge fixing bracket 13 is provided with a dial gauge 4 and a gauge probe 9.

[0018] How to use: Find the defective part of the tread, and place the inner rim against the inner side of the rim of the faulty wheelset; place the two rim bases on the rim of the faulty wheelset; move the main part to align the scale with the defective part; loosen the slider adjustment nut, and tighten the slider adjustment nut after the probe of the meter falls to the deepest part of the defect; after determining the measuring position, fix the main part, observe the data of the meter, and after the data stabilizes, press the "ZERO" button of the meter and confirm that the data is reset to zero, and the meter displays "00.00mm". Get the defect depth data: slowly lift the measuring instrument upwards, and move it along the circumferential direction of the wheelset, and drop the measuring instrument on the defect-free part of the wheelset. After the data stabilizes, a negative value is obtained. Convert this data to a positive value, which is the final depth data of the defect.

[0019] Method for measuring the defect depth at the root of wheel rim

[0020] Instrument zero calibration:

[0021] 1. Press the meter OFF / ON key to confirm that the measurement unit displayed on the meter screen is mm. If not, press the inch / mm key to adjust it. After adjustment, confirm that the meter display is "00.00mm".

[0022] Measuring defect data:

[0023] 2. Find the defective part of the tread and place the inner rim contact surface against the inner side of the rim of the faulty wheelset;

[0024] 3. Place both wheel rim bases on the wheel rim of the faulty wheelset;

[0025] 4. Move the main part to align the ruler with the defective part;

[0026] 5. Loosen the slider adjustment nut and the meter head angle adjustment nut, and tighten the nut after the meter head probe falls to the deepest part of the defect;

[0027] 6. After determining the measuring position, fix the main part, observe the data in the meter header, and when the data stabilizes, press the "ZERO" button on the meter header and confirm that the data is reset to zero. The meter header displays "00.00mm".

[0028] Get defect depth data:

[0029] 7. Slowly lift the measuring instrument upwards and move it along the circumferential direction of the wheelset. Drop the measuring instrument on the defect-free part of the wheelset. After the data stabilizes, a negative value will be obtained. Convert this data to a positive value, which is the final depth data of the defect.

[0030] Method for measuring the distance between the tread defect and the inner side of the rim:

[0031] After confirming that the gauge probe has fallen into the deepest part of the defect, observe the value of the guide angle on the left side of the slider. At this time, this value is the distance between the defect of the faulty wheelset and the inner side of the rim.

[0032] Wheelset axle body defect depth data measurement method:

[0033] Instrument zero calibration:

[0034] 1. Loosen the angle adjustment nut of the meter head, align the auxiliary centering scale, ensure that the meter head is perpendicular to the scale, and tighten the nut after adjustment.

[0035] 2. Press the meter OFF / ON button to confirm that the measurement unit displayed on the meter screen is mm. If not, press the inch / mm button to adjust it. After adjustment, confirm that the meter display is "00.00mm".

[0036] Measuring defect data:

[0037] 3. Move the measuring instrument as a whole so that the probe is aligned with the defective part of the tread, place the shaft measuring base on the shaft, and ensure that the instrument does not shake.

[0038] 4. After the data is stable, reset the meter to zero;

[0039] 5. Continue to fix the main part, loosen the slider adjustment nut, move the slider, make the probe fall on the defect-free area, and get a negative value after the data stabilizes. Convert this data to a positive value, which is the final depth data of the defect.

[0040] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. An EMU wheel set tread and axle body defect depth measuring instrument, comprising an axle body reference platform (1), a handle (2), a handle (3), a dial gauge (4), a ruler (5), a gauge head locking nut (6), a slider locking nut (7), a ruler slider (8), a gauge head probe (9), a wheel rim reference platform (10), a gauge head rotating locking nut (11), a wheel rim inner side reference surface (12) and a gauge head fixing bracket (13), characterized in that: The handle (2) is connected to the shaft body reference platform (1), and the handle (3) is connected to the handle (2). The shaft body reference platform (1) is provided with a rim inner side reference surface (12), and a rim reference platform (10) is provided on one side of the rim inner side reference surface (12). The ruler (5) is connected to the rim reference platform (10); the ruler (5) is provided with a ruler slider (8), the ruler slider (8) is fixed by a slider locking nut (7), a gauge fixing bracket (13) is provided on the ruler slider (8), and a dial gauge (4) and a gauge probe (9) are provided on the gauge fixing bracket (13). The handle (3) is made of silicone. The ruler (5) is perpendicular to the rim inner side reference surface (12), the axis of the gauge probe (9) is perpendicular to the axis of the gauge fixing bracket (13), and the gauge locking nut (6), the gauge rotating locking nut (11) and the gauge fixing bracket (13) are coaxial.

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