Online pass-type wheel pre-measuring device

Abstract

The utility model belongs to the technical field of railway rolling stock wheel geometric quantity detection, and particularly relates to an on-line through type wheel pre-measuring device which comprises a main support which stretches across a wheel conveying line in a gate mode, a left extension plate and a right extension plate are symmetrically arranged in the middle of a cross beam of the main support, and the right extension plate is connected with a first support. The first support is connected with a visual sensor, the left extension plate is connected with a second support, the second support is connected with a first laser distance measuring sensor, the bottom of the wheel conveying line is provided with a third support, and the third support is connected with a second laser distance measuring sensor. According to the utility model, on-line passing type automatic pre-measurement of wheels on a conveying line is realized, automatic pre-measurement of critical dimensions such as the diameter and the depth of a hub hole can be realized, and visual inspection of peripheral appearance defects of the hub hole can be realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of railway locomotive and vehicle wheel geometry detection, specifically relates to an online through type wheel pre-measuring device. BACKGROUND

[0002] Wheel is the key component of railway locomotive and vehicle operation, and is also the indispensable interchangeable part in the maintenance process, and its importance is self-evident.In the new wheel and maintenance replacement, the accurate processing of wheel hub hole is crucial, and before that, the pre-measurement of wheel is the basic step of determining the processing amount and optimizing the processing parameter.

[0003] At present, the pre-measurement of wheel mainly relies on manual operation of hand-held measuring tools, and this method not only has large error, but also is low in efficiency, and is difficult to adapt to the urgent needs of large-scale and automatic production of wheel.Although some wheel automatic measuring machines exist in the market, most of these devices are designed for the detection link after wheel finishing, and although they are excellent in measurement accuracy and automation, the measurement speed is relatively slow, and the equipment cost is high, therefore, they are not suitable for the pre-measurement stage before wheel processing.

[0004] In order to meet the low-cost, automatic and high-efficiency pre-measurement of wheel before processing, a new type of wheel pre-measuring device needs to be designed. CONTENT OF UTILITY MODEL

[0005] The utility model discloses in order to overcome the insufficient in the background art, provides an online through type wheel pre-measuring device, including the main support that presents the door type and straddles above the wheel conveying line, the left extension plate and right extension plate are symmetrically arranged in the middle of main support crossbeam, and the first support is connected on right extension plate, and the visual sensor is connected on the first support, and the second support is connected on left extension plate, and the first laser ranging sensor is connected on the second support, and the bottom of wheel conveying line is equipped with the third support, and the second laser ranging sensor is connected on the third support.

[0006] Further, the first support further includes a fill light, and the fill light emits light downward and close to the visual sensor.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] The utility model realizes the automatic pre-measurement of wheel on the conveying line, can automatically pre-measure the diameter, depth and other key dimensions of hub hole, and visually check the defects of hub hole periphery, and has the advantages of high automation, high efficiency and good economy. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is the overall perspective drawing of the online through type wheel pre-measuring device of the utility model.

[0010] Fig. 2 It is another perspective overall perspective view of the online through type wheel pre-measuring device of the utility model;

[0011] Fig. 3 It is sectional view of the online through type wheel pre-measuring device of the utility model.

[0012] The figure mark: 1, wheel conveying line;2, wheel;21, wheel hub hole;22, upper end face;23, lower end face;3, main support;4, first support;5, visual sensor;6, light supplement lamp;7, second support;8, first laser ranging sensor;9, third support;10, second laser ranging sensor. Specific implementation

[0013] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. All other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0014] Reference Figs. 1-3 The utility model provides a kind of online through type wheel pre-measuring device, including the main support 3 of door type striding above wheel conveying line 1, left extension plate 31 and right extension plate 32 are symmetrically set in the middle of main support 3 crossbeam, first support 4 is connected on right extension plate 32, visual sensor 5 is connected on first support 4, second support 7 is connected on left extension plate 31, first laser ranging sensor 8 is on second support 7, the bottom of wheel conveying line 1 is equipped with third support 9, and second laser ranging sensor 10 is connected on third support 9.

[0015] Working surface is respectively wheel hub hole 21, upper end face 22 and lower end face 23 on wheel 2, specifically:

[0016] Preferably, first support 4 further includes light supplement lamp 6, and the light emitting surface of light supplement lamp 6 faces down and is close to visual sensor 5, can illuminate wheel hub hole 21 in the measuring process;The angle of orientation of visual sensor 5 and light supplement lamp 6 can be fine-tuned by first support 4, fine-tuned to the place of directly facing wheel hub hole 21.

[0017] Visual sensor 5 uses 5 million pixel black and white CMOS lens, and shooting resolution is 2368×1760, exposure time is 16 μs, and lens focal length is 8 mm.

[0018] Light supplement lamp 6 is white light LED array type diffuse light area light source, color temperature 6000-7000K, power 50w.

[0019] The angle of the first laser ranging sensor 8 can be finely adjusted through the second support 7, and the ranging laser emitted by the first laser ranging sensor 8 is directed to the upper end surface 22.

[0020] The angle of the second laser ranging sensor 10 can be finely adjusted through the third support 9, and the ranging laser emitted by the second laser ranging sensor 10 is directed to the lower end surface 23.

[0021] Specifically, the first support 4, the second support 7 and the third support 9 are all provided with a strip-shaped notch, so that the relative position of the first support 4, the second support 7 and the third support 9 is adjusted by the position of the screw in the strip-shaped notch, and is fixed by the screw in the strip-shaped notch after adjustment.

[0022] The first laser ranging sensor 8 and the second laser ranging sensor 10 are diffuse reflection type point laser displacement ranging sensors, and the detection range is usually 100-200mm, and the detection accuracy is 0.02mm.

[0023] Working principle: The electric control components such as the visual sensor 5, the light supplement lamp 6, the first laser ranging sensor 8 and the second laser ranging sensor 10 are connected to the central control machine (not shown in the figure) through the cable, the wheel 2 is translated and conveyed along the wheel conveying line 1, when the wheel 2 is conveyed below the visual sensor 5, the light supplement lamp 6 illuminates the hub hole 21 of the wheel 2, enhances the identifiable degree of the edge of the hub hole 21, the visual sensor 5 directly opposite the hub hole 21 takes a photo and processes the digital image of the hub hole 21 through the image processing algorithm, identifies the surface defect information of the periphery of the hub hole 21 and segments the edge information of the hub hole 21, so as to calculate the diameter value of the hub hole 21; at the same time, the first laser ranging sensor 8 emits laser to measure the distance of the upper end surface 22 of the hub hole of the wheel 2, and the second laser ranging sensor 10 emits laser to measure the distance of the lower end surface 23 of the hub hole of the wheel 2, and the depth value of the hub hole 21 of the wheel 2 is calculated by comparing the values of the vertical distances measured at two places; thus, the prediction of the wheel 2 is completed, and the wheel 2 is conveyed to the subsequent station along the wheel conveying line 1.

[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An on-line through-type wheel prediction measuring device, characterized by: The main support (3) is arranged in a door type across the wheel conveying line (1), the left extension plate (31) and the right extension plate (32) are symmetrically arranged in the middle of the main support (3) beam, the first support (4) is connected to the right extension plate (32), the visual sensor (5) is connected to the first support (4), the second support (7) is connected to the left extension plate (31), the first laser ranging sensor (8) is connected to the second support (7), the third support (9) is arranged at the bottom of the wheel conveying line (1), and the second laser ranging sensor (10) is connected to the third support (9).

2. The online through type wheel prediction measuring device according to claim 1, characterized in that: The first support (4) further comprises a light supplement lamp (6), and the light emitting surface of the light supplement lamp (6) faces downward and is close to the visual sensor (5).

3. The online through type wheel prediction measuring device according to claim 1, characterized in that: The first support (4), the second support (7) and the third support (9) are all provided with strip-shaped notches on surfaces.

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