CN114324564A - Brake disc eddy current inspection equipment - Google Patents

Abstract

The invention relates to a brake disc eddy current inspection device which comprises a base, a rack, a positioning mechanism, a deflector rod mechanism and a plurality of sensor measuring heads for eddy current inspection, wherein the positioning mechanism is arranged on the base and comprises a central upright post, a supporting upright post, a positioning sleeve and an elastic supporting device; the shifting lever mechanism is arranged above the positioning mechanism through a displacement seat, so that the shifting lever mechanism can move in four directions, namely up, down, front and back, and comprises a shifting lever assembly and a rotating mechanism for driving the shifting lever assembly to rotate; and the sensor measuring heads are aligned to the parts to be detected of the brake disc and are arranged on the frame.

Description

Brake disc eddy current inspection equipment

Technical Field

The invention relates to a brake disc eddy current inspection device, and belongs to the technical field of eddy current inspection devices.

Background

The brake disc is a key part for realizing automobile braking, eddy current flaw detection is required to be carried out on the brake disc in the production and manufacturing process and before delivery, the eddy current flaw detection is a flaw detection method for detecting surface defects of components and metal materials by utilizing the electromagnetic induction principle, and the stability, safety and reliability of the automobile braking can be ensured only if the detection result meets the requirement.

The existing eddy current testing equipment for the brake disc has the following problems: (1) the positioning sleeve of the traditional eddy current flaw detection equipment is fixedly arranged, the positioning sleeve cannot rotate along with the rotation of the brake disc, and the brake disc does not stably rotate on the positioning sleeve, so that a workpiece scratches the positioning sleeve; (2) because the workpiece needs to rotate at a higher speed in the flaw detection process, the workpiece is easily scratched by the supporting tool, and the product quality is affected; (3) brake discs with different specifications need to be manufactured with different specifications of supporting tools and positioning sleeves, and the time for dismounting and replacing the supporting tools and the positioning sleeves is long; (4) in an environment with a lot of dust in a workshop, a large amount of dust can be accumulated in the recorder due to the fact that the industrial microphone is always in an upward state, and the measurement result of the natural frequency is influenced.

Disclosure of Invention

The present invention aims to provide a new technical solution to improve or solve the technical problems in the prior art as described above.

The invention provides brake disc eddy current inspection equipment which comprises a base, a rack, a positioning mechanism, a deflector rod mechanism and a plurality of sensor measuring heads for eddy current inspection, wherein the positioning mechanism is arranged on the base and comprises a central stand column, a support stand column, a positioning sleeve and an elastic supporting device; the shifting lever mechanism is arranged above the positioning mechanism through a displacement seat, so that the shifting lever mechanism can move in four directions, namely up, down, front and back, and comprises a shifting lever assembly and a rotating mechanism for driving the shifting lever assembly to rotate; the sensor measuring heads are installed on the rack or the base, a supporting bearing is further arranged at the end of the supporting upright column, and the supporting bearing is installed on the inner side or/and the outer side of the supporting upright column.

The natural frequency detection device comprises a vertical mounting plate, a knocking hammer, an industrial microphone and a lifting device for supporting the brake disc to detect, wherein the knocking hammer and the industrial microphone are mounted on the vertical mounting plate, the industrial microphone is rotatably mounted on the vertical mounting plate and arranged on one side of the knocking hammer, and a sound input port of the industrial microphone can be made to face upwards or downwards when the industrial microphone rotates around a rotating shaft.

Further, it includes many lifting columns, backup pad and lifts the cylinder to lift the device, many it encircles to lift the column positioning mechanism sets up and many it sets up in the backup pad to lift the column, the backup pad is installed on the output shaft of lifting the cylinder, realizes the whole lift of lifting columns.

The supporting upright post is characterized by further comprising a plurality of guide rails which are arranged around the circumference of the central upright post, a plurality of supporting upright posts are respectively arranged on the respective guide rails in a manner of moving back and forth along the guide rails, and a locking mechanism is arranged between the guide rails and the supporting upright posts.

Furthermore, the rotating mechanism comprises a hollow shaft, a bearing sleeve and a synchronizing wheel, the bearing sleeve is sleeved on the outer side of the hollow shaft and connected with the hollow shaft through a bearing, the bearing sleeve is fixed on the displacement seat, the synchronizing wheel is fixedly sleeved at one end of the hollow shaft, and a deflector rod assembly is arranged at the other end of the hollow shaft.

Furthermore, the driving lever assembly comprises a driving lever sleeve, a spring and a driving lever, the driving lever sleeve is sleeved outside the driving lever, the driving lever sleeve is connected with the driving lever through the spring, and the driving lever assembly is installed at one end of the hollow shaft through a transverse connecting plate.

Furthermore, the elastic supporting device comprises an ejector rod, a spring and a positioning sleeve connecting rod, the positioning sleeve is installed at one end of the positioning sleeve connecting rod through a bearing, the other end of the positioning sleeve connecting rod is connected with the ejector rod through the spring, a hollow cavity is arranged in the central stand column, and the elastic supporting device is installed in the hollow cavity of the central stand column.

Furthermore, the number of sensor gauge head is eight, including last braking face test probe, lower braking face test probe, be used for detecting the grooving face test probe of the damage of grooving part on the brake disc, be used for detecting the test probe of the little excircle face of brake disc and four test probes that are used for detecting interior/outer terminal surface of brake disc installation circle, eight the sensor gauge head is respectively right the last braking face of brake disc, lower braking face, grooving face, little excircle face and the first outer terminal surface, the second outer terminal surface, the first inner terminal surface and the second inner terminal surface of installation circle carry out eddy current flaw detection.

Furthermore, the upper brake surface detection probe and the lower brake surface detection probe are arranged on a first lifting mechanism, the first lifting mechanism is arranged on a linear sliding table, and the linear sliding table is fixed on a measurement sliding table; therefore, the upper braking surface detection probe and the lower braking surface detection probe can move in the six directions of up, down, left, right, front and back; the grooving surface detection probe is arranged on a second lifting mechanism, and the second lifting mechanism is arranged on the measurement sliding table; the movement of the grooving surface detection probe in the up-down, front-back and front-back directions is realized; and a central fixing rod is fixedly arranged in a hollow cavity of the hollow shaft of the rotating mechanism, and one of the detecting probes for detecting the inner/outer end faces of the installation inner circle of the brake disc is arranged at the end part of the central fixing rod.

Furthermore, positioning mechanism still includes synchronous adjusting device, synchronous adjusting device includes adjusting sleeve and a plurality of connecting rod, the quantity of connecting rod with the quantity looks adaptation of support post, adjusting sleeve is in order to follow the mode suit that center post slided from top to bottom the outside of center post, and adjusting sleeve and many realize connecting through a plurality of connecting rods between the support post.

Further, still include the bar code scanner, the bar code scanner passes through bar code scanner support mounting on measuring the slip table, the bar code scanner can be followed it moves in the fore-and-aft direction to measure the slip table.

Furthermore, the lower part of the ejector rod extends out of the central upright post and is installed on a displacement table through a connecting plate, the displacement table enables the ejector rod to achieve height adjustment in the vertical direction, and the elasticity of the spring is changed by adjusting the height of the ejector rod.

The push rod is connected with the connecting plate through a connecting rod, and the connecting plate is connected with the push rod through a connecting rod.

Furthermore, the elastic supporting device also comprises a limiting device which can limit the up-and-down movement distance of the positioning sleeve.

The invention has the beneficial effects that:

1. the positioning sleeve is arranged at the end part of the central upright post in a manner of rotating around the axis of the positioning sleeve, the brake disc is sleeved on the outer side of the positioning sleeve, the brake disc is rotated by shifting of the shifting lever mechanism, the positioning sleeve rotates synchronously with the brake disc, the positioning sleeve does not rub with a central hole of the brake disc, the rotating stability of the brake disc is ensured, and the brake disc can be rotated at a high speed when the eddy current inspection equipment for the brake disc is used for carrying out flaw detection on the brake disc, so that the detection efficiency of the brake disc is improved.

2. The end part of the support upright post is also provided with the support bearing, the mounting inner circle of the brake disc is contacted with the support bearing, the support bearing can rotate around the axis of the support bearing while the brake disc rotates, so that friction between the mounting inner circle of the brake disc and the support upright post can be prevented, and the support upright post can not scratch the brake disc when the brake disc rotates at a high speed, so that the brake disc is not damaged in the detection process.

3. According to the invention, the size of the supporting range of the supporting upright post can be adjusted by adjusting the position of the supporting upright post on the guide rail, so that the supporting upright post is suitable for bearing and mounting brake discs with different inner circle sizes, the function of supporting, positioning and detecting the brake discs with mounting inner circles of various specifications by using the same detection tool is achieved, and the production cost is reduced.

4. The positioning sleeve is supported by the elastic supporting device, and when a brake disc is placed on the positioning sleeve, the brake disc presses the positioning sleeve downwards under the action of self gravity, so that the positioning sleeve is ensured to be in contact with a central hole of the brake disc, and an installation inner circle of the brake disc is also ensured to be in contact with a supporting bearing, and the positioning sleeve is suitable for supporting detection of brake discs with different weights; and the spring force of the spring will reduce the pressure of the brake disc on the support bearing.

5. The natural frequency detection device can detect the natural frequency of the brake disc before flaw detection is carried out on the brake disc, the industrial microphone of the natural frequency detection device is rotatably arranged on the vertical mounting plate, when the natural frequency is measured, the sound input port of the industrial microphone is upwards by rotating the industrial microphone, and when the natural frequency is not measured, the sound input port of the industrial microphone is downwards by turning the industrial microphone, so that dust is prevented from entering and affecting the measurement effect.

6. The number of the measuring heads of the sensor is eight, flaw detection can be performed on six fixed positions and two brake faces of the brake disc, flaw detection is accurate, and the quality of products is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a brake disk configuration;

FIG. 3 is a schematic view of the structure of the driving lever for driving the brake disc to rotate according to the present invention;

FIG. 4 is an enlarged schematic view of the structure at A of the present invention;

FIG. 5 is a schematic structural view of a shifter lever mechanism according to the present invention;

FIG. 6 is a sectional view taken along line A-A of the present invention;

FIG. 7 is a schematic view of the elastic supporting device of the present invention;

FIG. 8 is a cross-sectional view taken along line B-B of the present invention;

FIG. 9 is a schematic view of the positioning mechanism of the present invention;

FIG. 10 is a schematic view of the construction of the ejector pin installation of the present invention;

FIG. 11 is a natural frequency detection apparatus of the present invention;

FIG. 12 is a schematic view of a sensor probe mounting configuration of the present invention;

FIG. 13 is an enlarged view of the structure at B;

FIG. 14 is a schematic view of the sensor of the present invention in a set position;

in the figure, 101, a base; 102. a frame; 2. a positioning mechanism; 201. a central upright post; 202. a guide rail; 203. supporting the upright post; 204. a positioning sleeve; 205. a support bearing; 206. a clamp; 3. an elastic support device; 301. a top rod; 302. the positioning sleeve is connected with the connecting rod; 303. a limiting sleeve; 304. a spacing pin/shaft; 305. a flange end plate; 306. a long round hole; 307. a displacement table; 308. a connecting plate; 309. a knob; 4. a synchronization adjustment device; 401. an adjusting sleeve; 402. a connecting rod; 5. a deflector rod assembly; 501. a deflector rod sleeve; 502. a spring; 503. a deflector rod; 6. a brake disc; 601. installing an inner circle; 6011. a first outer end face; 6012. a second outer end face; 6013. a first inner end surface; 6014. a second inner end surface; 602. a central bore; 603. bolt holes; 604. digging a groove surface; 605. mounting a brake surface; 606. a lower brake surface; 607. a small outer circular surface; 7. a natural frequency detection device; 701. a vertical mounting plate; 702. knocking hammers; 703. an industrial microphone; 704. a rotating cylinder; 705. moving the sliding table; 8. a sensor probe; 801. an upper brake surface detection probe; 802. a lower brake surface detection probe; 803. digging a groove surface detection probe; 804. a first detection probe; 805. a small outer circle detection probe; 806. a second detection probe; 807. a third detection probe; 808. a fourth detection probe; 9. a code scanner; 10. measuring a sliding table; 11. a lifting device; 1101. lifting the column; 1102. a support plate; 12. a bearing; 13. a rotation mechanism; 1301. a hollow shaft; 1302. a bearing housing; 1303. a synchronizing wheel; 1304. locking the nut; 1305. a spacer sleeve; 1306. a U-shaped bracket; 1307. a central fixing rod; 1308. a displacement seat; 14. a linear sliding table; 1501. a first lifting mechanism; 1502. and a second lifting mechanism.

Detailed Description

The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.

As shown in fig. 1 to 12, a brake disc eddy current testing apparatus includes a base 101 and a frame 102, and further includes a positioning mechanism 2, a shift lever 503 mechanism, and a plurality of sensor probes 8 for eddy current testing, where the positioning mechanism 2 is disposed on the base 101, the positioning mechanism 2 includes a central upright 201, a support upright 203, a positioning sleeve 204, and an elastic support device 3, the plurality of support uprights 203 are circumferentially disposed around the central upright 201, and the positioning sleeve 204 is mounted at an end of the central upright 201 through the elastic support device 3 in a manner of being capable of rotating around its axis; the shifting lever 503 mechanism is arranged above the positioning mechanism 2 through a displacement seat 1308, so that the shifting lever 503 mechanism can move in four directions, namely up and down, front and back, and comprises a shifting lever assembly 5 and a rotating mechanism 13 for driving the shifting lever assembly 5 to rotate; a plurality of said sensor probes 8 are mounted on a frame 102.

As shown in fig. 3-4, in use, the brake disc 6 is sleeved outside the positioning sleeve 204, the positioning sleeve 204 is used for positioning the rotation center position of the brake disc 6, the rotation mechanism 13 is driven by the driving lever 503 motor to rotate, the displacement base 1308 drives the driving lever assembly 5 to be inserted into the bolt hole 603 of the brake disc 6, the rotation of the brake disc 6 on the positioning sleeve 204 is realized by the shifting of the driving lever 503 mechanism, the positioning sleeve 204 rotates synchronously with the brake disc 6, and the brake disc 6 is detected comprehensively by the plurality of sensor probes 8 for eddy current flaw detection while rotating.

In addition, in the specific embodiment,

brake disc 6 (shown in fig. 2): the brake disc comprises an inner mounting circle 601, a central hole 602, a bolt hole 603, a groove 604, an upper braking face 605 and a lower braking face 606.

Support column 203 (shown in fig. 9): the plurality of support columns 203 are respectively installed on the guide rail 202, the plurality of support columns 203 can move along the guide rail 202, a locking mechanism is further arranged between the guide rail 202 and the support columns 203, the locking mechanism is a caliper 206, of course, the locking mechanism can also be other devices with a locking function, and the size of the support range of the support columns 203 can be adjusted by adjusting the positions of the support columns 203 on the guide rail 202, so that the support columns 203 are suitable for bearing brake discs 6 with different sizes of the installation inner circles 601, and the function of supporting, positioning and detecting the brake discs 6 with the installation inner circles 601 of various specifications by using the same detection tool is achieved. The number of the guide rails 202 is adapted to the number of the support columns 203, and in a specific embodiment, the number of the guide rails 202 and the number of the support columns 203 are three, but of course, the number of the guide rails 202 and the number of the support columns 203 may be more or less, as long as balanced support of the brake disc 6 can be achieved. The end of the support column 203 is further provided with a support bearing 205, the support bearing 205 is installed on the inner side or/and the outer side of the support column 203, the central axis of the support bearing 205 is perpendicular to the axis of the center column 201, the installation inner circle 601 of the brake disc 6 is in contact with the support bearing 205, the support bearing 205 rotates around the axis of the brake disc 6 while rotating, friction between the installation inner circle 601 of the brake disc 6 and the support column 203 can be prevented, and the brake disc 6 is further prevented from being damaged in the detection process.

Elastic support means 3 (shown in figures 7-8): the elastic supporting device 3 comprises a top rod 301, a spring 502 and a positioning sleeve connecting rod 302, the positioning sleeve 204 is mounted at one end of the positioning sleeve connecting rod 302 through a bearing 12, and the other end of the positioning sleeve connecting rod 302 is connected with the top rod 301 through the spring 502. A hollow cavity is arranged in the center upright column 201, the elastic supporting device 3 is installed in the hollow cavity of the center upright column 201, the lower part of the ejector rod 301 extends out of the center upright column 201 and is installed on a displacement table 307 through a connecting plate 308, the displacement table 307 enables the ejector rod 301 to achieve height adjustment in the vertical direction, and the elasticity of the spring 502 is changed by adjusting the height of the ejector rod 301. In addition, a knob 309 is further arranged on the workbench, the knob 309 and the connecting plate 308 are installed in a linkage mode, the height of the connecting plate 308 is adjusted by rotating the knob 309, and therefore the height of the ejector rod 301 is adjusted. The elastic support device 3 further comprises a limiting device capable of limiting the distance of the up-and-down movement of the positioning sleeve 204, the limiting device comprises a limiting sleeve 303 and a limiting pin/shaft 304, the limiting sleeve 303 is fixedly connected with the central upright column 201 through a flange end plate 305, the limiting sleeve 303 is sleeved on the outer side of the positioning sleeve connecting rod 302, a long circular hole 306 is formed in the limiting sleeve 303, the limiting pin/shaft 304 is fixed on the positioning sleeve connecting rod 302, and the limiting pin/shaft 304 is located in the long circular hole 306. The limiting sleeve 303 and the limiting pin/shaft 304 can limit the up-and-down moving distance of the locating sleeve 204 and prevent the spring 502 from fatigue fracture.

Locating sleeve 204 (shown in fig. 7-8): the positioning sleeve 204 is supported by the elastic supporting device 3, the positioning sleeve 204 is of a frustum structure with the diameter gradually increasing from top to bottom, and can be suitable for brake discs 6 with different central hole diameters, when the brake disc 6 is placed on the positioning sleeve 204, the brake disc 6 presses the positioning sleeve 204 downwards under the action of self gravity, so that the positioning sleeve 204 is ensured to be in contact with a central hole 602 of the brake disc 6, the installation inner circle 601 of the brake disc 6 is also ensured to be in contact with the supporting bearing 205, in addition, the height of the ejector rod 301 can be adjusted according to the weight of the brake disc 6, the effect of adjusting the elastic force of the spring 502 is realized, if the weight of the brake disc 6 is heavier, the ejector rod 301 is adjusted upwards to compress the spring 502, so that the elastic force of the spring 502 is increased, if the weight of the brake disc 6 is lighter, the ejector rod 301 is adjusted downwards to adjust the elastic force of the spring 502 to a small point, therefore, the support detection of the brake disc 6 with different weights is suitable, and the elastic force of the spring 502 reduces the pressure of the brake disc 6 on the support bearing 205.

Synchronization adjustment device 4 (shown in fig. 9): the positioning mechanism 2 for detecting the brake disc 6 further comprises a synchronous adjusting device 4, the synchronous adjusting device 4 comprises an adjusting sleeve 401 and a plurality of connecting rods 402, the number of the connecting rods 402 is matched with the number of the supporting columns 203, for example, when the number of the supporting columns 203 is the root, the number of the connecting rods 402 is also the number of the connecting rods 402, the adjusting sleeve 401 is sleeved on the outer side of the central column 201 in a manner of being capable of sliding up and down along the central column 201, and the adjusting sleeve 401 is connected with the plurality of the supporting columns 203 through the plurality of the connecting rods 402. When the adjusting sleeve 401 moves up and down, the connecting rod 402 drives the plurality of supporting columns 203 to move along the respective guide rails 202 at the same time, and after the supporting columns 203 move to a proper position, the supporting columns 203 are fixed on the guide rails 202 through a locking mechanism.

Natural frequency detection means 7 (shown in fig. 11): the eddy current testing equipment for the brake disc 6 further comprises a natural frequency testing device 7, wherein the natural frequency testing device 7 comprises a vertical mounting plate 701, a knocking hammer 702, an industrial microphone 703 and a lifting device 11 for supporting the brake disc 6 to be tested, the knocking hammer 702 and the industrial microphone 703 are mounted on the vertical mounting plate 701, the industrial microphone 703 is rotatably mounted on the vertical mounting plate 701, the industrial microphone 703 is arranged on one side of the knocking hammer 702, the sound input port of the industrial microphone 703 can be upward or downward when the industrial microphone 703 rotates around a rotating shaft, in a specific embodiment, the industrial microphone 703 is mounted on the vertical mounting plate 701 through a natural frequency rotating cylinder 704, of course, the industrial microphone 703 can also be mounted through a device with a rotating function, the striking hammer 702 may be a commercially available push-pull electromagnet, such as the push-pull electromagnet model KK-15648 available from kaka electric limited of le qing. The vertical mounting plate 701 can be slidably mounted on the workbench through the movable sliding table 705, the vertical mounting plate 701 can move along with the movable sliding table 705 and is fixed, the position of the natural frequency knocking hammer 702 for knocking a workpiece can be adjusted, and the vertical mounting plate 701 can be suitable for workpieces of different models.

Lifting device 11 (shown in fig. 1 and 3): the lifting device 11 is used for carrying out natural frequency detection after supporting the brake disc 6 to a certain height, the lifting device 11 comprises a plurality of lifting columns 1101, a supporting plate 1102 and lifting cylinders, the plurality of lifting columns 1101 encircle the positioning mechanism 2 and the plurality of lifting columns 1101 are arranged on the supporting plate 1102, the supporting plate 1102 is arranged on an output shaft of the lifting cylinders, and the integral lifting of the lifting columns 1101 is realized.

A rotating mechanism 13: the shifting mechanism comprises a hollow shaft 1301, a bearing sleeve 1302 and a synchronizing wheel 1303, wherein the bearing sleeve 1302 is sleeved on the outer side of the hollow shaft 1301, the bearing sleeve 1302 is connected with the hollow shaft 1301 through a bearing 12, the bearing sleeve 1302 is fixed on a displacement seat 1308, one end of the hollow shaft 1301 is sleeved with the synchronizing wheel 1303 and is fixed through a locking nut 1304, a spacer 1305 is further arranged between the synchronizing wheel 1303 and the locking nut 1304, and a shifting lever assembly is arranged at the other end of the hollow shaft 1301. The synchronizing wheel 1303 is meshed with a gear on the output shaft of the driving lever 503 motor, the rotation of the driving lever 503 motor is transmitted to the hollow shaft 1301 through the synchronizing wheel 1303, so that the hollow shaft 1301 rotates, the bearing sleeve 1302 is fixed on the displacement seat 1308, the hollow shaft 1301 drives the driving lever 503 to rotate, and the driving lever 503 is inserted into the bolt hole 603 of the brake disc 6 so that the brake disc 6 rotates; a U-shaped bracket 1306 is also provided on the rotation mechanism 13.

Shifter lever assembly (shown in fig. 6): the shifting lever assembly comprises a shifting lever sleeve 501, a spring 502 and a shifting lever 503, wherein the shifting lever sleeve 501 is sleeved outside the shifting lever 503, the shifting lever sleeve 501 is connected with the shifting lever 503 through the spring 502, and the shifting lever assembly is installed at one end of a hollow shaft 1301 through a transverse connecting plate 308. When the shifting lever 503 descends to be matched with the bolt hole 603 of the brake disc 6, the shifting lever 503 may abut against the end surface of the brake disc 6, and when the shifting lever 503 rotates to the bolt hole 603, the shifting lever is ejected out under the action of the spring 502, so that the shifting lever 503 can be smoothly inserted into the bolt hole 603 and drives the workpiece to rotate.

Sensor probe 8 (shown in fig. 12-14): the number of the sensor measuring heads 8 is eight, and the sensor measuring heads comprise an upper braking face detection probe 801, a lower braking face detection probe 802, a grooving face detection probe 803 for detecting damage of a grooving part on the brake disc 6, a small outer circle detection probe 805 for detecting the brake disc, and four detection probes for detecting the inner/outer end faces of the installation inner circle 601 of the brake disc 6, wherein the four detection probes are respectively a first detection probe 804, a second detection probe 806, a third detection probe 807 and a fourth detection probe 808, and eight the sensor measuring heads 8 respectively carry out eddy current flaw detection on the upper braking face 605, the lower braking face 606, the grooving face 604, the small outer circle face 607, a first outer end face 6011, a second outer end face 6012, a first inner end face 6013 and a second inner end face 6014 of the installation inner circle of the brake disc.

Go up brake face test probe 801 and lower brake face test probe 802 and install in frame 102 with the mode that can move in six directions in upper and lower, left and right front, back, grooving face test probe 803 is installed in frame 102 with the mode that can move in four directions in upper and lower, preceding, back, go up brake face test probe 801, lower brake face test probe 802, little excircle test probe 805, grooving face test probe 803, second test probe 806 by it can be in the fore-and-aft direction upwards slide to measure slip table 10 drive, third test probe 807 and fourth test probe 808 install on base 101.

More specifically, the upper braking face detection probe 801 and the lower braking face detection probe 802 are both mounted on the first lifting mechanism 1501, so that the upper braking face detection probe 801 and the lower braking face detection probe 802 can move in the upper and lower directions, meanwhile, the first lifting mechanism 1501 is mounted on the linear sliding table 14, so that the upper braking face detection probe 801 and the lower braking face detection probe 802 can move in the left and right directions, the linear sliding table 14 is fixed on the measurement sliding table 10, and the upper braking face detection probe 801 and the lower braking face detection probe 802 can move in the front and rear directions; the groove surface detection probe 803 is mounted on the second lifting mechanism 1502, so that the groove surface detection probe 803 can move in the up-and-down direction, and meanwhile, the second lifting mechanism 1502 is mounted on the measurement sliding table 10, so that the groove surface detection probe 803 can move in the front-and-back direction. A central fixing rod 1307 is further fixedly arranged in a hollow cavity of the hollow shaft 1301 of the rotating mechanism 13, the first detection probe 804 is arranged at an end portion of the central fixing rod 1307, and the first detection probe 804 is used for performing eddy current flaw detection on a second outer end surface 6012 of the brake disc.

During the use, measure slip table 10 and drive go up brake face test probe 801 and brake face test probe 802 move in the front, rear direction, first elevating system 1501 drives go up brake face test probe 801 and brake face test probe 802 move in upper and lower direction down, straight line slip table 14 drives go up brake face test probe 801 and brake face test probe 802 realize the scanning detection to brake disc 6 upper and lower brake face down in the reciprocating motion on the horizontal direction. In addition, be equipped with the grooving on the position that the last brake face of brake disc 6 is close to circle 601 in the installation, in order to detect a flaw to the grooving, need measure the slip table 10 and drive during the measurement grooving face test probe 803 gos forward to drive through the lift cylinder grooving face test probe 803 descends, guarantees that grooving face test probe 803 falls on the grooving, just can measure.

The scanner 9 (shown in fig. 1): still include bar code scanner 9, bar code scanner 9 is used for scanning the two-dimensional code on the brake disc 6, associates two-dimensional code and measured data on the brake disc 6, realizes two-dimensional code and measured data one-to-one, bar code scanner 9 passes through bar code scanner 9 support mounting on measuring slip table 10, bar code scanner 9 can follow measuring slip table 10 moves in the front and back direction.

The working flow after the 6 eddy current testing equipment of the brake disc is started is as follows:

first, the natural frequency detection process begins

S1, the initial state of the lifting cylinder is a lifting state, the lifting cylinder lifts the lifting column 1101 as a whole, and the brake disc 6 is placed on the lifting column 1101;

s2, the natural frequency rotation cylinder 704 drives the industrial microphone 703 to rotate around a rotation axis so that the sound input port faces upward;

s3, triggering an electromagnetic valve in the knocking hammer 702, enabling the knocking hammer 702 to ascend, knocking a workpiece once, enabling the knocking hammer 702 to fall down immediately after knocking is finished, simultaneously enabling the industrial microphone 703 to collect audio signals and transmit the collected signals to computing software, obtaining an inherent frequency value of the workpiece through software computing, completing inherent frequency detection, and enabling the inherent frequency rotating cylinder 704 to drive the industrial microphone 703 to rotate around a rotating shaft to enable a sound input port of the industrial microphone 703 to face downwards;

s4, the lifting cylinder drives the lifting column 1101 to fall back integrally, and the brake disc 6 falls on the positioning mechanism 2.

Second, the eddy current inspection process begins

S5, the sliding table 10 drives the upper brake lining detection probe 801, the lower brake lining detection probe 802, the grooved lining detection probe 803, the small outer circle detection probe 805, and the second detection probe 806 to advance and reach a set detection position, and the grooved lining detection probe 803 is driven by the second lifting mechanism 1502 to descend into the groove;

s6, the shifting rod 503 descends through an air cylinder, the shifting rod 503 is inserted into the bolt hole 603 of the brake disc 6, and the shifting rod 503 is driven by the motor to drive the shifting rod 503 to rotate so as to drive the brake disc 6 to rotate on the positioning sleeve 204;

s7, starting a code scanner 9 to scan the brake disc 6, after the code scanning is successful, driving the upper braking face detection probe 801 and the lower braking face detection probe 802 to reciprocate by the linear sliding table 14, scanning and detecting the upper braking face and the lower braking face of the brake disc 6, and respectively detecting the groove digging face detection probe 803, the small outer circle detection probe 805, the first detection probe 804, the second detection probe 806, the third detection probe 807 and the fourth detection probe 808 by aiming at the groove digging face 604, the small outer circle face 607, the first outer end face 6011, the second outer end face 6012, the first inner end face 6013 and the second inner end face 6014 of the brake disc 6;

s8, detect and accomplish the back driving lever 503 motor stops rotatoryly, straight line slip table 14 resets simultaneously driving lever 503 cylinder and rises and retreat, the grooving cylinder drives grooving face test probe 803 and rises, measures slip table 10 and drives bar code reader 9, last spigot face test probe 801, lower spigot face test probe 802, grooving face test probe 803, little excircle test probe 805 and second test probe 806 retreat, lifts the brake disc 6 after the cylinder rises will detecting a flaw and holds up, and 6 eddy current flaw detection of brake disc are accomplished, export qualified or unqualified signal according to the testing result.

The positioning sleeve 204 is arranged at the end part of the central upright post 201 in a manner of rotating around the axis of the positioning sleeve, the brake disc 6 is sleeved outside the positioning sleeve 204, the brake disc 6 rotates by shifting of the shifting lever 503 mechanism, the positioning sleeve 204 rotates synchronously with the brake disc 6, the positioning sleeve 204 does not rub with a central hole 602 of the brake disc 6, the rotating stability of the brake disc 6 is ensured, the brake disc 6 can rotate at high speed, and the detection efficiency is improved.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. The brake disc eddy current flaw detection device comprises a base (101) and a rack (102), and is characterized by further comprising a positioning mechanism (2), a shifting rod (503) mechanism and a plurality of sensor measuring heads (8) for eddy current flaw detection, wherein the positioning mechanism (2) is arranged on the base (101), the positioning mechanism (2) comprises a central upright post (201), a plurality of supporting upright posts (203), a positioning sleeve (204) and an elastic supporting device (3), the supporting upright posts (203) are circumferentially arranged around the central upright post (201), and the positioning sleeve (204) is arranged at the end part of the central upright post (201) through the elastic supporting device (3) in a manner of rotating around the axis of the positioning sleeve; the shifting lever (503) mechanism is arranged above the positioning mechanism (2) through a displacement seat (1308) to realize the movement of the shifting lever (503) mechanism in the up-down direction, the front direction and the rear direction, and the shifting lever (503) mechanism comprises a shifting lever assembly and a rotating mechanism (13) for driving the shifting lever assembly to rotate; the sensor measuring heads (8) are arranged on the rack (102) or the base (101); the end part of the supporting upright post (203) is also provided with a supporting bearing (205), and the supporting bearing (205) is arranged on the inner side or/and the outer side of the supporting upright post (203).

2. The brake disc eddy current testing apparatus according to claim 1, further comprising a natural frequency detecting device (7), wherein the natural frequency detecting device (7) comprises a vertical mounting plate (701), a knocking hammer (702), an industrial microphone (703), and a lifting device (11) for supporting the brake disc (6) for detection, the knocking hammer (702) and the industrial microphone (703) are mounted on the vertical mounting plate (701), the industrial microphone (703) is rotatably mounted on the vertical mounting plate (701) and the industrial microphone (703) is disposed at one side of the knocking hammer (702), and a sound input port of the industrial microphone (703) can be made to face upward or downward when the industrial microphone (703) is rotated about a rotation axis.

3. The brake disc eddy current testing apparatus according to claim 2, wherein the lifting device (11) comprises a plurality of lifting columns (1101), a support plate (1102) and a lifting cylinder, the plurality of lifting columns (1101) are arranged around the positioning mechanism (2) and the plurality of lifting columns (1101) are arranged on the support plate (1102), the support plate (1102) is mounted on an output shaft of the lifting cylinder, and the lifting columns (1101) are integrally lifted.

4. The brake disc eddy current testing apparatus according to claim 1, further comprising a plurality of guide rails (202), wherein the plurality of guide rails (202) are circumferentially arranged around the center pillar (201), a plurality of support pillars (203) are respectively mounted on the respective guide rails (202) in a manner that the support pillars (203) can move back and forth along the guide rails (202), and a locking mechanism is further provided between the guide rails (202) and the support pillars (203).

5. The brake disc eddy current testing device according to claim 1, wherein the rotating mechanism (13) comprises a hollow shaft (1301), a bearing sleeve (1302) and a synchronizing wheel (1303), the bearing sleeve (1302) is sleeved on the outer side of the hollow shaft (1301), the bearing sleeve (1302) is connected with the hollow shaft (1301) through a bearing, the bearing sleeve (1302) is fixed on the displacement seat (1308), the synchronizing wheel (1303) is fixedly sleeved at one end of the hollow shaft (1301), and the deflector rod assembly (5) is arranged at the other end of the hollow shaft (1301).

6. The brake disc eddy current testing apparatus of claim 5, wherein the shift lever assembly (5) comprises a shift lever sleeve (501), a spring (502) and a shift lever (503), the shift lever sleeve (501) is sleeved outside the shift lever (503), the shift lever sleeve (501) is connected with the shift lever (503) through the spring (502), and the shift lever assembly (5) is installed at one end of a hollow shaft (1301) through a transverse connecting plate (308).

7. The brake disc eddy current testing apparatus according to claim 1, wherein the elastic supporting device (3) comprises a top rod (301), a spring (502) and a positioning sleeve connecting rod (302), the positioning sleeve (204) is mounted at one end of the positioning sleeve connecting rod (302) through a bearing (12), the other end of the positioning sleeve connecting rod (302) is connected with the top rod (301) through the spring (502), a hollow cavity is arranged in the center pillar (201), and the elastic supporting device (3) is mounted in the hollow cavity of the center pillar (201).

8. The brake disc eddy current testing apparatus according to claim 5, wherein the number of the sensor probes (8) is eight, and the sensor probes comprise an upper braking face detection probe (801), a lower braking face detection probe (802), a grooving face detection probe (803) for detecting damage of a grooving portion on the brake disc (6), a detection probe (805) for detecting a small outer circular face of the brake disc, and four detection probes for detecting inner/outer end faces of an installation inner circle (601) of the brake disc (6), and the eight sensor probes (8) respectively perform eddy current testing on the upper braking face (605), the lower braking face (606), the grooving face (604), the small outer circular face (607), and a first outer end inner end face (6011), a second outer end face (6012), a first outer end face (6013), and a second inner end face (6014) of the brake disc.

9. Brake disc eddy current testing apparatus according to claim 8, characterized in that the upper brake surface detection probe (801) and the lower brake surface detection probe (802) are mounted on a first lifting mechanism (1501), the first lifting mechanism (1501) is mounted on a linear slide (14), the linear slide (14) is fixed on a measurement slide (10); the groove digging surface detection probe (803) is arranged on a second lifting mechanism (1502), and meanwhile, the second lifting mechanism (1502) is arranged on a measurement sliding table (10); a central fixing rod (1307) is further fixedly arranged in a hollow cavity of the hollow shaft (1301) of the rotating mechanism (13), and a detection probe used for detecting the inner/outer end faces of the installation inner circle (601) of the brake disc (6) is arranged at the end part of the central fixing rod (1307).

10. The brake disc eddy current testing apparatus according to claim 1, wherein the positioning mechanism (2) further comprises a synchronous adjusting device (4), the synchronous adjusting device (4) comprises an adjusting sleeve (401) and a plurality of connecting rods (402), the number of the connecting rods (402) is matched with the number of the supporting columns (203), the adjusting sleeve (401) is sleeved on the outer side of the central column (201) in a manner of being capable of sliding up and down along the central column (201), and the adjusting sleeve (401) is connected with the plurality of supporting columns (203) through the plurality of connecting rods (402).

11. Brake disc eddy current testing apparatus according to claim 1, further comprising a code scanner (9), the code scanner (9) being mounted on a measurement slide (10) by means of a code scanner (9) mounting, the code scanner (9) being movable in a front and rear direction along the measurement slide (10).

12. The brake disc eddy current testing apparatus according to claim 7, wherein the lower portion of the carrier rod (301) is extended out of the center pillar (201) and mounted on a displacement table (307) through a connecting plate (308), the displacement table (307) enables the carrier rod (301) to be adjusted in height in the up-and-down direction, and the elastic force of the spring (502) is changed by adjusting the height of the carrier rod (301).

13. The brake disc eddy current testing apparatus according to claim 12, further comprising a knob (309), wherein the knob (309) is installed in linkage with the connecting plate (308), and the height of the connecting plate (308) is adjusted by rotating the knob (309), so that the height of the ejector rod (301) is adjusted.

14. Brake disc eddy current testing apparatus according to claim 7, characterized in that the elastic support means (3) further comprises limiting means that can limit the distance of the up and down movement of the locating sleeve (204).

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