Automatic measuring device for critical dimension of track wheel

Abstract

A track wheel critical dimension automatic measuring device comprises a precision measuring platform, and a thickness measuring device is arranged on the precision measuring platform. The thickness measuring device comprises a thickness measuring frame which is fixed on the precision measuring platform and is provided with two thickness measuring heads on each of an upper layer and a lower layer, specifically, a radial slide way is fixed on the thickness measuring frame, a radial slide block capable of sliding along the radial slide way is arranged on the radial slide way, and an axial slide way is fixed on the radial slide block; and a thickness measuring head capable of sliding along the axial slide way is arranged on the axial slide way. Compared with the prior art, the technical effects of the utility model are that the device is provided with the radial slide way and the axial slide way, thereby achieving the measurement of the thicknesses S5 / S4 / S3 of the cross sections at different positions, and improving the measurement efficiency and precision.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mechanical engineering and precision measurement, and this technology is mainly used for measuring and evaluating the key geometric dimensions of the rail wheel, such as diameter, width, profile shape, etc. BACKGROUND

[0002] In the production process of the rail wheel, it is crucial to accurately measure the key dimensions of the wheel. The conventional measurement method currently used includes manual measurement using special measuring tools, and this method has high error rate, high labor intensity, low efficiency and is greatly affected by human error. Based on the current situation, the patent provides a kind of rail wheel key size measuring device, and it is suitable for wheels of various models and specifications.

[0003] Referring to Figure 6 , there are many measurement data, such as diameter D1, inner diameter D5, thickness S5 / S4 / S3 of different position sections, and thickness at S1 and S2 of the wheel.

[0004] The traditional detection method has the following disadvantages: when measuring the thickness S5 / S4 / S3 of different position sections, multiple sets of measuring devices need to be used, which is troublesome. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is how to design a kind of rail wheel key size automatic measuring device to improve efficiency and accuracy.

[0006] The technical scheme of the utility model is specifically as follows:

[0007] A kind of rail wheel key size automatic measuring device, including precision measurement platform, precision measurement platform is equipped with thickness measuring device;Thickness measuring device includes thickness measuring frame, thickness measuring frame is fixed on precision measurement platform, and it is equipped with two thickness measuring heads in upper and lower two layers, specifically: fixed radial slide on thickness measuring frame, radial slide is equipped with radial slide block capable of sliding along it, radial slide block is fixed with axial slide, axial slide is equipped with thickness measuring head capable of sliding along it.

[0008] The lifting inner support rotating mechanism includes a rotating member, which is rotatably connected to the precision measurement platform, and the rotating member is connected to the support disc through the telescopic member.

[0009] Precision measurement platform is equipped with inner diameter measuring device;Inner diameter measuring device includes measuring track, measuring track is equipped with sliding frame capable of sliding along it, sliding frame is fixed with ring-mounted inner diameter measurement calibration gauge, sliding frame is equipped with inner diameter measuring frame, sliding frame and inner diameter measuring frame are equipped with linear motion driving member, inner diameter measuring frame can pass through the center of inner diameter measurement calibration gauge, and the lower end is equipped with inner diameter measuring head.

[0010] The precision measurement platform is provided with a lifting inner support rotating mechanism, four groups of outer diameter measuring devices are arranged in a normal position on the side of the lifting inner support rotating mechanism, and the bottom of the outer diameter measuring device is fixedly connected to the precision measurement platform.

[0011] The outer side of the lifting inner support rotating mechanism is uniformly provided with three support block frames, the bottom of the support block frame is fixedly connected to the precision measurement platform, and a rim surface support block capable of sliding along the support block frame is slidably arranged on the support block frame.

[0012] The precision measurement platform is provided with two groups of circle runout measuring devices, and the two groups of circle runout measuring devices are symmetrically arranged along the lifting inner support rotating mechanism.

[0013] The upper and lower ends of the sliding frame are both provided with a gauge laser.

[0014] The precision measurement platform is provided with an outer diameter measurement calibration gauge block, a thickness measurement calibration gauge block and a laser calibration block.

[0015] Compared with the prior art, the technical effect of the utility model is that the radial slide and the axial slide are arranged, the thickness S5 / S4 / S3 of different position sections is measured, and the measurement efficiency and precision are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the utility model Figure 1 .

[0017] Figure 2 is a schematic diagram of the utility model Figure 2 .

[0018] Figure 3 is a schematic diagram of the utility model Figure 3 .

[0019] Figure 4 is an enlarged schematic diagram of the lifting inner support rotating mechanism.

[0020] Figure 5 is an enlarged schematic diagram of the thickness measuring device.

[0021] Figure 6 is a schematic diagram of the prior art. DETAILED DESCRIPTION

[0022] The utility model will be described in detail below in combination with the drawings and the specific implementation.

[0023] As Figures 1-5 A key size automatic measuring device for a railway wheel comprises a precision measurement platform 1, a lifting inner support rotating mechanism 5, an inner diameter measuring device 4 and a thickness measuring device 9 arranged on the precision measurement platform 1.

[0024] AsFigure 4 The lifting inner support rotating mechanism 5 comprises a rotating piece 501 which is rotationally connected to the precision measurement platform 1, and the rotating piece 501 is connected to a support disc 502 through a telescopic piece.

[0025] The inner diameter measuring device 4 comprises a measuring track 401, a sliding frame 402 which can slide along the measuring track 401 is arranged on the measuring track 401, an inner diameter measuring calibration gauge 403 is fixedly arranged on the sliding frame 402, an inner diameter measuring frame 406 is slidably arranged on the sliding frame 402, the sliding frame 402 and the inner diameter measuring frame 406 are provided with a linear motion driving piece 404, the inner diameter measuring frame 406 can pass through the center of the inner diameter measuring calibration gauge 403, and an inner diameter measuring head 405 is arranged at the lower end of the inner diameter measuring frame 406.

[0026] As shown in Figure 4 The side surface of the lifting inner support rotating mechanism 5 is provided with four sets of outer diameter measuring devices 3 which are arranged in a perpendicular manner, and the bottom of each outer diameter measuring device 3 is fixedly connected to the precision measurement platform 1.

[0027] As shown in Figure 4 The outer side of the lifting inner support rotating mechanism 5 is uniformly provided with three support block frames 601, the bottom of each support block frame 601 is fixedly connected to the precision measurement platform 1, and a rim surface support block 6 which can slide along the support block frame 601 is slidably arranged on the support block frame 601.

[0028] The precision measurement platform 1 is fixedly provided with two sets of circular runout measuring devices 8 which are symmetrically arranged along the lifting inner support rotating mechanism 5.

[0029] As shown in Figure 5 The thickness measuring device 9 comprises a thickness measuring frame 901 which is fixed to the precision measurement platform 1 and is provided with two thickness measuring heads 902 arranged on two layers in a vertical direction, specifically, a radial slide 903 is fixedly arranged on the thickness measuring frame 901, a radial slide block 904 which can slide along the radial slide 903 is arranged on the radial slide 903, an axial slide 906 is fixedly arranged on the radial slide block 904, and the thickness measuring head 902 which can slide along the axial slide 906 is arranged on the axial slide 906.

[0030] One gauge laser 11 is arranged on each of the upper and lower ends of the sliding frame 402.

[0031] In order to facilitate detection of accuracy, the precision measurement platform 1 is provided with an outer diameter measuring calibration gauge block 2, a thickness measuring calibration gauge block 7 and a laser calibration block 12, which are used to correct the accuracy of the outer diameter measuring device 3, the thickness measuring device 9 and the gauge laser 11 respectively.

[0032] The working principle is as follows:

[0033] As shown in Figures 1-6 The method comprises the following steps:

[0034] S10, at the beginning of initial measurement, all measuring devices are in calibration position. The inner diameter measuring device 4 is in the highest position, and the four sets of outer diameter measuring devices 3 are in the original position. According to the size of the measured wheel, the supporting block 6 is slid on the supporting block frame 601 to make adaptive adjustment of the position, and is ready to receive the measured wheel.

[0035] S20, after the measured wheel enters the measuring device and the mechanical hand places the wheel rim of the measured wheel on the rim surface supporting block 6, the mechanical hand is withdrawn. Then, the telescopic part of the lifting inner support rotating mechanism 5 is extended, so that the supporting disc 502 lifts the measured wheel, and the measured wheel is separated from the rim surface supporting block 6.

[0036] S30, static measurement starts:

[0037] S31, the four sets of outer diameter measuring devices 3 are in contact with the outer circle of the measured wheel under the drive of the small motor. The measuring head is a small plate in tangential contact with the outer circle of the measured wheel. The outer diameter measuring devices are in pair correspondence, and the four sets of outer diameter measuring devices 3 measure the diameters D1 at two positions.

[0038] S32, the inner diameter measuring device 4 moves towards the axis of the measured wheel by relying on the sliding of the sliding frame 402 on the measuring track 401. When the center of the inner diameter measuring calibration gauge 10 coincides with the axis of the measured wheel, the inner diameter measuring head 405 moves downward by relying on the pushing of the linear motion driving part 404, and the inner diameter D5 is measured. In this measurement, the measuring device can rotate and move up and down (that is, rely on the upward and downward movement of the linear motion driving part 404) to measure the inner diameters D5 at different sections. After the measurement is completed, the inner diameter measuring device 4 returns to the initial position.

[0039] S33, the thickness measuring head 902 of the thickness measuring device 9 moves along the radial direction of the measured wheel to approach the measured wheel. Through the four measuring heads at the upper and lower ends, the measuring device can move along the radial direction (the sliding of the radial slider 904 on the radial slide 903) and the axial direction (the sliding of the thickness measuring head 902 on the axial slide 906) to measure the thickness S5 / S4 / S3 at different sections during the measurement. After the measurement is completed, it returns to the initial position.

[0040] S34, the upper and lower end gauge lasers 11 measure the thickness dimensions of the measured wheel S1, S2 along with the radial movement of the sliding frame 402. After the measurement is completed, it returns to the initial position.

[0041] S40, dynamic measurement starts:

[0042] S41, the two sets of circle runout measuring devices 8 move along the radial direction to contact the outer circle of the measured wheel. The measured wheel rotates to complete the circle runout data collection. After the measurement is completed, the measuring device returns to the initial position.

[0043] S42, the up-down gauge laser 11 can also measure the thickness of the measured wheels S1, S2 dynamically.

[0044] S50, the dynamic and static measurement is finished, the lifting inner support rotating mechanism 5 is lowered, the measured wheel falls back to the wheel rim surface supporting block 6, and the manipulator takes away the measured wheel to complete one measurement.

[0045] In addition, after the measurement work is finished, calibration can be performed: when the cross-shaped outer diameter calibration gauge block 2 is turned to be concentric with the clamping position of the measured wheel, it is placed on the lifting inner support rotating mechanism 5 for positioning, the outer diameter measuring device moves to contact the gauge block for calibration, after calibration, the gauge block and the measuring device return to the initial position. The micrometer on the inner diameter measuring device 4 moves up and down into the inner diameter calibration gauge 10 for calibration. The thickness calibration gauge block 7 is fixed, the thickness measuring device 9 rotates, and the four measuring heads move linearly to contact the gauge block for calibration.

[0046] After calibration, the measuring devices return to the initial position for measurement of the next measured wheel.

[0047] The features of the present application are:

[0048] S1, online automatic measurement, with dynamic and static measurement capability, the device can not only perform contact measurement, but also be suitable for non-contact measurement.

[0049] S2, it has universality, and the important size automatic measurement and calibration of the wheel are realized on one device, and the device is suitable for wheels of various sizes.

[0050] S3, full-automatic rapid type change adjustment can be realized (except for the replacement of the positioning block and the inner diameter micrometer).

[0051] Other contents refer to the prior art.

[0052] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the present application, a number of changes and improvements can be made, which should also be considered as the protection range of the present application.

Claims

1. A device for automatic measurement of key dimensions of railway wheels, comprising a precision measuring platform (1), characterised in that: The precision measurement platform (1) is provided with a thickness measurement device (9); the thickness measurement device (9) comprises a thickness measurement frame (901), which is fixed on the precision measurement platform (1) and is provided with two thickness measurement heads (902) on the upper and lower layers; specifically, a radial slide (903) is fixed on the thickness measurement frame (901), the radial slide (903) is provided with a radial slide block (904) capable of sliding thereon, the radial slide block (904) is fixed with an axial slide (906), and the axial slide (906) is provided with a thickness measurement head (902) capable of sliding thereon.

2. The rail wheel critical dimension automated measurement device of claim 1, wherein: The lifting inner support rotating mechanism (5) comprises a rotating piece (501), which is rotationally connected to the precision measurement platform (1), and the rotating piece (501) is connected to a support disc (502) through an extension piece.

3. The rail wheel critical dimension automated measurement apparatus of claim 2, wherein: The precision measurement platform (1) is provided with an inner diameter measurement device (4); the inner diameter measurement device (4) comprises a measurement track (401), which is provided with a sliding frame (402) capable of sliding thereon; the sliding frame (402) is fixed with a ring-mounted inner diameter measurement calibration gauge (403); the sliding frame (402) is slidingly provided with an inner diameter measurement frame (406); the sliding frame (402) and the inner diameter measurement frame (406) are provided with a linear motion driving piece (404); the inner diameter measurement frame (406) can pass through the center of the inner diameter measurement calibration gauge (403), and the lower end is provided with an inner diameter measurement head (405).

4. The rail wheel critical dimension automated measurement apparatus of claim 3, wherein: The precision measurement platform (1) is provided with a lifting inner support rotating mechanism (5), and the side of the lifting inner support rotating mechanism (5) is provided with four groups of outer diameter measurement devices (3) arranged in a perpendicular manner; the bottom of the outer diameter measurement device (3) is fixedly connected to the precision measurement platform (1).

5. The rail wheel critical dimension automated measurement apparatus of claim 4, wherein: The outer side of the lifting inner support rotating mechanism (5) is uniformly provided with three support block frames (601), the bottom of the support block frame (601) is fixedly connected to the precision measurement platform (1), and the support block frame (601) is slidingly provided with a rim surface support block (6) capable of sliding thereon.

6. The rail wheel critical dimension automated measurement apparatus of claim 5, wherein: The precision measurement platform (1) is fixed with two groups of circular runout measurement devices (8), which are symmetrically arranged along the lifting inner support rotating mechanism (5).

7. The rail wheel critical dimension automated measurement apparatus of claim 6, wherein: The upper and lower ends of the sliding frame (402) are each provided with a gauge laser (11).

8. The rail wheel critical dimension automated measurement apparatus of claim 7, wherein: The precision measurement platform (1) is provided with an outer diameter measurement calibration gauge block (2), a thickness measurement calibration gauge block (7), and a laser calibration block (12).

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