A brake disc deformation measurement device and method

Abstract

The application discloses a kind of brake disc deformation measurement device and method, the device includes measuring table, rotating disc, rotating mechanism and measuring mechanism are arranged on the measuring table, the rotating disc is placed on the wheel-mounted brake disc to be measured, can drive wheel-mounted brake disc to rotate, the rotating disc is rotated under the drive of rotating mechanism;The measuring mechanism is used to measure the inside and outside height of the same heat dissipation rib on wheel-mounted brake disc, and the deformation of wheel-mounted brake disc is reacted by the inside and outside height difference of heat dissipation rib;The application provides that wheel-mounted brake disc to be measured is rotated by rotating disc and rotating mechanism, each heat dissipation rib on brake disc is measured by measuring device, and then the deformation of entire brake disc is obtained;Compared with the deformation of brake disc being judged by the thickness change amount of brake disc, the deformation of brake disc can be more truly and accurately reflected, and then accurate judgment is made to the use of brake disc.

Description

Technical Field

[0001] This invention relates to the field of brake disc deformation measurement technology, specifically to a brake disc deformation measurement device and method. Background Technology

[0002] The brake disc is a key component of a vehicle's braking system, and the degree of wear on the brake disc is a crucial factor in ensuring stable braking of the vehicle on the rails. For a train to decelerate from a high speed to a low speed or come to a complete stop, a highly efficient basic braking device is essential. Braking using a brake disc involves the friction between the brake disc and brake pads, converting kinetic energy into heat energy, resulting in efficient braking without damaging the wheelset tread. However, if the wear on the brake disc is excessive, it will affect the interaction force between the brake disc and brake pads during braking, leading to uneven force distribution and thus affecting the braking of the train. Therefore, during train maintenance, it is necessary to measure the deformation of the brake disc.

[0003] Currently, the deformation of the brake disc is usually judged by detecting the change in the thickness of the brake disc. When the change in the thickness of the brake disc exceeds a certain value, it will cause the vehicle or its components to vibrate during braking. However, the existing detection method is to place the brake disc on a measuring platform and manually adjust the measuring position repeatedly using a measuring tool. The measurement method is cumbersome and the frequent adjustment of the measuring tool position results in inaccurate measurement data. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a brake disc deformation measurement device and method, which can quickly detect the deformation of multiple heat dissipation fins on the same wheel-mounted brake disc, and thus obtain the deformation of the wheel-mounted brake disc.

[0005] The technical solution of the present invention is as follows:

[0006] In a first aspect of the invention, a brake disc deformation measuring device is provided, comprising a measuring platform, a rotating disk, a rotating mechanism, and a measuring mechanism disposed on the measuring platform, wherein a wheel-mounted brake disc to be measured is placed on the rotating disk and is capable of driving the wheel-mounted brake disc to rotate, the rotating disk rotating under the drive of the rotating mechanism; the measuring mechanism is used to measure the inner and outer heights of the same heat dissipation fin on the wheel-mounted brake disc, and the deformation of the wheel-mounted brake disc is reflected by the height difference between the inner and outer sides of the heat dissipation fin.

[0007] In some embodiments of the present invention, the measuring platform includes a measuring platform base, which is assembled from four base components, with adjacent base components engaging with each other via grooves.

[0008] In some embodiments of the present invention, the rotating disk is mounted on a measuring platform base, and the measuring platform base is provided with multiple arc-shaped limiting ribs, which are used to limit the rotation disk.

[0009] In some embodiments of the present invention, the measuring mechanism includes a measuring bracket, a slide rail, and a measuring ruler. The measuring bracket is mounted on the base of the measuring platform via a connecting plate. The slide rail is fixedly connected to the measuring bracket. The measuring ruler is mounted on the slider of the slide rail and is driven to move along the slide rail by a sliding block. The measuring head of the measuring ruler can contact the inner or outer side of the same heat dissipation fin of the wheel-mounted brake disc.

[0010] In some embodiments of the present invention, the connecting plate can be inserted into grooves of different heights on the base of the measuring platform to accommodate wheeled brake discs of different heights.

[0011] In some embodiments of the present invention, the rotating disk includes a central rotating disk and a peripheral rotating disk. A protrusion is provided on the outer edge of the central rotating disk, and the protrusion cooperates with a groove provided on the inner ring of the peripheral rotating disk.

[0012] In some embodiments of the present invention, the bottom of the intermediate turntable is hemispherical, the middle part of the intermediate turntable is cylindrical, and the central part of the cylindrical part has an opening.

[0013] In some embodiments of the present invention, the upper surface of the peripheral turntable is a plane, and gears are provided at the bottom of the outer periphery of the peripheral turntable.

[0014] In some embodiments of the present invention, the rotating mechanism includes a rotating handle, a rotating shaft, and an upper cover plate. The rotating shaft is mounted on the rotating handle shaft. The rotating shaft rotates along the shaft center by rotating the handle, thereby driving the gear on the rotating shaft to rotate circumferentially. The gear on the rotating shaft meshes with the gear at the bottom of the turntable around the measuring platform.

[0015] In a second aspect of the present invention, a method for measuring brake disc deformation is provided, comprising the following steps:

[0016] Place the brake disc of the wheel to be measured flat on the rotating disk of the measuring table;

[0017] The deformation of the heat dissipation fin is obtained by measuring the height of the inner and outer sides of the same heat dissipation fin on the wheel brake disc using a measuring mechanism.

[0018] The rotating mechanism rotates the wheel-mounted brake disc to the position of the next heat dissipation fin, and measures the inner and outer height values ​​of the next heat dissipation fin to obtain the deformation amount of the next heat dissipation fin.

[0019] Repeat the above steps to measure the height difference of the remaining cooling fins, and finally achieve rapid detection of the deformation of multiple cooling fins on the same wheel brake disc.

[0020] One or more technical solutions of the present invention have the following beneficial effects:

[0021] (1) The brake disc deformation measuring device provided by the present invention is provided with a rotating disk, a measuring mechanism and a rotating mechanism. The measuring mechanism can measure the height values ​​of the inner and outer sides of the same heat dissipation rib of the wheel-mounted brake disc to obtain the deformation of the heat dissipation rib. The rotating disk and the rotating mechanism drive the wheel-mounted brake disc to be measured to rotate, thereby measuring each heat dissipation rib on the brake disc and obtaining the deformation of the entire brake disc. Compared with the existing method of judging the deformation of the brake disc by the change in brake disc thickness, it can more realistically and accurately reflect the deformation of the brake disc and make an accurate judgment on the use of the brake disc.

[0022] (2) The measuring mechanism in the brake disc deformation measuring device provided by the present invention includes a measuring bracket, a mounting plate, a slide rail and a measuring ruler. By installing the measuring bracket in the grooves at different heights on the measuring platform base, it can adapt to the needs of measuring brake discs of different heights. At the same time, by setting the slide rail, the inner and outer heights of a heat dissipation fin can be measured, which improves the overall applicability of the device.

[0023] (3) The rotating disk in the brake disc deformation measuring device provided by the present invention can be rotated by the drive of the rotating mechanism, thereby driving the switching of the measuring position of the brake disc to be measured on the rotating disk. Compared with the existing method of manually adjusting the measuring position multiple times using measuring rulers and tools, it is more convenient to use and improves work efficiency.

[0024] (4) The brake disc deformation measuring device provided by the present invention is assembled from multiple parts, has a simple structure and is easy to use. The device can be quickly transported as a whole through the set lifting ring hole, and the weight of the whole device can be reduced through the set multiple weight reduction holes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the brake disc deformation measuring device of the present invention;

[0026] Figure 2 This is a front view of the brake disc deformation measuring device of the present invention;

[0027] Figure 3 This is a top view of the brake disc deformation measuring device of the present invention;

[0028] Figure 4 This is a schematic diagram of the measuring mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the measuring platform base of the present invention;

[0030] Figure 6This is a schematic diagram of the rotating mechanism of the present invention;

[0031] Figure 7 This is a schematic diagram of the peripheral disk portion of the present invention;

[0032] Figure 8 This is a schematic diagram of the rotation mechanism and the peripheral turntable of the present invention.

[0033] Figure 9 This is a schematic diagram of the structure of the intermediate turntable of the present invention;

[0034] Figure 10 This is a schematic diagram showing the cooperation of the central turntable, peripheral turntable, and base of the present invention;

[0035] Figure 11 This is a top view of the wheel-mounted brake disc measured by the present invention;

[0036] Figure 12 yes Figure 11 Cross-sectional view at point AA;

[0037] Figure 13 yes Figure 12 A magnified view of a section at point I.

[0038] In the diagram: 1. Measuring mechanism; 101. Measuring bracket; 102. Connecting plate; 103. Slide rail; 104. Measuring ruler; 2. Measuring platform base; 201. First base component; 202. Second base component; 203. Third base component; 204. Fourth base component; 205. First arc-shaped limiting rib; 206. Second arc-shaped limiting rib; 207. Third arc-shaped limiting rib; 208. Adjusting groove; 209. Lifting ring hole; 210. Rotating shaft support seat; 3. Rotating mechanism; 301. Rotating handle; 302. Rotating shaft; 303. First gear; 304. Top cover plate; 4. Peripheral turntable; 401. Groove; 402. Second gear; 403. Circular positioning rib; 5. Middle turntable; 501. Protrusion; 502. Cylindrical; 503. Hemispherical; 6. Wheel-mounted brake disc; 601. Heat dissipation rib. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] In a typical embodiment of the present invention, a brake disc deformation measuring device is provided, such as... Figure 1-3As shown, it includes a measuring platform, on which a rotating disk, a rotating mechanism, and a measuring mechanism are provided. The rotating disk on which the wheel-mounted brake disc to be measured is placed can drive the wheel-mounted brake disc to rotate. The rotating disk rotates under the drive of the rotating mechanism. The measuring mechanism is used to measure the inner and outer heights of the same heat dissipation fin on the wheel-mounted brake disc. The deformation of the wheel-mounted brake disc is reflected by the height difference between the inner and outer sides of the heat dissipation fin.

[0042] Specifically, the measuring platform includes a measuring platform base 2, which is assembled from four base components, with adjacent base components engaging through grooves. Specifically, as... Figure 5 As shown, the base components include a first base component 201, a second base component 202, a third base component 203, and a fourth base component 204, which are assembled sequentially. The base can be quickly disassembled by adopting a split structure. The first base component 201 and the second base component 202 are provided with multiple symmetrical height adjustment grooves 208 for installing the measuring mechanism. The first base component 201 is provided with a lifting ring hole 209, which can be used to lift and transport the entire device after it is assembled.

[0043] Furthermore, each base component of the measuring platform base is provided with multiple arc-shaped limiting ribs, including a first arc-shaped limiting rib 205 located on the inner side, and a second arc-shaped limiting rib 206 and a third arc-shaped limiting rib 207 located on the outer side. These arc-shaped limiting ribs are used to limit the rotation of the rotating disk. In order to reduce the overall weight of the device, each base component is also provided with machined through holes.

[0044] like Figure 4 As shown, the measuring mechanism includes a measuring bracket 101, a slide rail 103, and a measuring ruler 104. The measuring bracket 101 is L-shaped, consisting of a horizontal and a vertical section. The bottom of the vertical section of the measuring bracket 101 is mounted on the measuring platform base 2 via a connecting plate 102 and bolts. The horizontal section of the measuring bracket 101 faces the center of the measuring platform, and a slide rail is mounted on the horizontal section. The slide rail 103 is fixedly connected to the measuring bracket 101 by bolts. The measuring ruler 104 is mounted on a sliding block on the slide rail 103. Moving the sliding block on the slide rail indirectly moves the measuring ruler 104. The measuring head of the measuring ruler 104 can contact the inner or outer side of the same heat dissipation fin of the wheel-mounted brake disc. The connecting plate 102 can be inserted into adjustment grooves 208 of different heights on the first and second base components 201 of the measuring platform base to accommodate wheel-mounted brake discs of different heights. During measurement, different positions on the same cross-section of the brake disc can be measured by sliding the measuring ruler 104 left and right and adjusting it up and down.

[0045] like Figure 6 and Figure 7As shown, the rotating mechanism 3 includes a rotating handle 301, a rotating shaft 302, and an upper cover plate 304. The rotating shaft 302 is mounted on the rotating handle 301. Rotating the handle 301 causes the rotating shaft 302 to rotate along its axis, thereby driving the first gear 303 on the rotating shaft 302 to rotate circumferentially. Specifically, the rotating shaft 302 is mounted on a rotating shaft support 210 symmetrically arranged on the first and fourth base components to support the rotating shaft. The upper cover plate 304 is installed above the first and fourth base components, and its lower part contacts the upper part of the peripheral turntable 4, thus limiting the vertical movement of the peripheral turntable during circumferential motion.

[0046] The rotating disk includes a central rotating disk 5 and peripheral rotating disks 4, such as Figure 8 and Figure 9 As shown, a protrusion 401 is provided on the outer edge of the intermediate turntable 4. The protrusion 401 cooperates with the groove 501 provided on the inner ring of the peripheral turntable 4 to realize the splicing of the intermediate turntable and the peripheral turntable. The upper surface of the peripheral turntable 4 is flat and is used to place the wheel brake disc to be measured. A second gear 402 is provided on the bottom of the outer periphery of the peripheral turntable 4. The second gear 402 meshes with the first gear on the rotating shaft, and the rotation of the intermediate turntable and the peripheral turntable is realized through the first gear. The bottom of the peripheral turntable is also provided with a circular positioning rib 403. When the peripheral turntable is installed on the measuring table base, the circular positioning rib 403 is located between the second arc limiting rib 206 and the third arc limiting rib 207.

[0047] The bottom of the intermediate turntable 5 is a hemispherical shape 503, which can realize the vertical positioning when the intermediate turntable rotates. The middle part of the intermediate turntable is a cylindrical shape 502, which is located inside the first arc limiting rib 205. The side of the cylindrical shape is in contact with the inner side of the first arc limiting rib, which can realize the circumferential positioning when the intermediate turntable rotates. The central part of the cylindrical shape 502 has an opening to reduce the weight of the device.

[0048] like Figure 10 As shown, the intermediate turntable 5 and the peripheral turntable 4 form a rotating disk through the cooperation of grooves and protrusions. The rotating disk is set on the base of the measuring table and is limited and supported by multiple arc-shaped limiting ribs. The upper surfaces of the intermediate turntable and the peripheral turntable are flush to support the brake disc of the wheel to be tested.

[0049] The brake disc deformation measuring device provided in this embodiment first places the wheel-mounted brake disc to be measured flat on the rotating disk of the measuring platform. The measuring ruler bracket 101 is then inserted into a groove of suitable height in the base 2 of the measuring platform according to the required height. Next, the left and right positions of the sliding block on the slide rail 103 and the up and down positions of the measuring head of the measuring ruler 104 are adjusted so that the measuring head can contact the inner and outer height values ​​A and B of the same heat dissipation fin on the wheel-mounted brake disc. The deformation amount is AB. After measurement, the rotating handle 301 is manually rotated to rotate the rotating disk circumferentially, allowing the brake disc to be rotated to the next heat dissipation fin position. The left and right positions of the slide rail and the up and down positions of the vernier caliper are then adjusted to measure the inner and outer height values ​​C and D of the next heat dissipation fin. This process is repeated to measure the height difference of the remaining heat dissipation fins, ultimately achieving rapid detection of the deformation amount of multiple heat dissipation fins on the same wheel-mounted brake disc.

[0050] Example 2

[0051] A method for measuring brake disc deformation, implemented using the measuring device of Example 1, includes the following steps:

[0052] Place the brake disc of the wheel to be measured flat on the rotating disk of the measuring table;

[0053] The deformation of the heat dissipation fin is obtained by measuring the height of the inner and outer sides of the same heat dissipation fin on the wheel brake disc using a measuring mechanism.

[0054] The rotating mechanism rotates the wheel-mounted brake disc to the position of the next heat dissipation fin, and measures the inner and outer height values ​​of the next heat dissipation fin to obtain the deformation amount of the next heat dissipation fin.

[0055] Repeat the above steps to measure the height difference of the remaining cooling fins, and finally achieve rapid detection of the deformation of multiple cooling fins on the same wheel brake disc.

[0056] When the deformation of the heat dissipation fins in all positions does not exceed a certain standard value, the wheel-mounted brake disc can continue to be used. Currently, different platforms of railway vehicles need to implement different deformation standard value control requirements according to operating conditions and speed. For example, the deformation of EMU trains is not allowed to exceed 0.3mm.

[0057] The location for measuring brake disc deformation is shown below. Figure 11-13As shown, during measurement, the surface of the measuring platform is used as a reference to measure the contact positions between the inner and outer cooling ribs and the wheel surface. Because the new brake disc's cooling ribs have a large contact area with the wheel spokes, they can accelerate heat dissipation. However, after the brake disc has been in operation, factors such as thermal expansion cause slight changes in the shape of the cooling ribs. Therefore, during brake disc maintenance, the height difference between the inner and outer positions of the cooling ribs is measured using the brake disc friction surface as a positioning reference to visually observe the deformation of the cooling ribs. If the height difference between the two positions is large, it will increase the axial stress on the bolts, and in severe cases, it can lead to bolt failure and breakage. This measurement method can effectively reflect the actual deformation of the brake disc, providing a basis for subsequent determination of whether it can continue to be used.

[0058] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A method for measuring brake disc deformation, implemented using a brake disc deformation measuring device, characterized in that, The device includes a measuring platform, on which a rotating disk, a rotating mechanism, and a measuring mechanism are provided. The rotating disk on which the wheel-mounted brake disc to be measured is placed is driven to rotate. The rotating disk rotates under the drive of the rotating mechanism. The measuring mechanism is used to measure the inner and outer heights of the same heat dissipation fin on the wheel-mounted brake disc. The deformation of the wheel-mounted brake disc is reflected by the height difference between the inner and outer sides of the heat dissipation fin. The measurement method includes the following steps: Place the brake disc of the wheel to be measured flat on the rotating disk of the measuring table; The deformation of the heat dissipation fin is obtained by measuring the height of the inner and outer sides of the same heat dissipation fin on the wheel brake disc using a measuring mechanism. The rotating mechanism rotates the wheel-mounted brake disc to the position of the next heat dissipation fin, and measures the inner and outer height values ​​of the next heat dissipation fin to obtain the deformation amount of the next heat dissipation fin. Repeat the above steps to measure the height difference of the remaining cooling fins, and finally achieve rapid detection of the deformation of multiple cooling fins on the same wheel brake disc.

2. The method for measuring brake disc deformation as described in claim 1, characterized in that, The measuring platform includes a measuring platform base, which is assembled from four base components, with adjacent base components engaging with each other via grooves.

3. The method for measuring brake disc deformation as described in claim 2, characterized in that, The rotating disk is mounted on the measuring platform base, which is provided with multiple arc-shaped limiting ribs for limiting the rotation of the rotating disk.

4. The method for measuring brake disc deformation as described in claim 2, characterized in that, The measuring mechanism includes a measuring bracket, a slide rail, and a measuring ruler. The measuring bracket is mounted on the base of the measuring platform via a connecting plate. The slide rail is fixedly connected to the measuring bracket. The measuring ruler is mounted on the slider of the slide rail and moves along the slide rail via a sliding block. The measuring head of the measuring ruler can contact the inner or outer side of the same heat dissipation fin of the wheel-mounted brake disc.

5. The method for measuring brake disc deformation as described in claim 4, characterized in that, The connecting plate can be inserted into grooves of different heights on the base of the measuring platform to accommodate wheeled brake discs of different heights.

6. The method for measuring brake disc deformation as described in claim 1, characterized in that, The rotating disk includes a central rotating disk and a peripheral rotating disk. A protrusion is provided on the outer edge of the central rotating disk, and the protrusion cooperates with the groove provided on the inner ring of the peripheral rotating disk.

7. The method for measuring brake disc deformation as described in claim 6, characterized in that, The bottom of the intermediate turntable is hemispherical, and the middle part of the intermediate turntable is cylindrical, with an opening in the center of the cylindrical part.

8. The method for measuring brake disc deformation as described in claim 6, characterized in that, The upper surface of the peripheral turntable is flat, and gears are provided at the bottom of the outer periphery of the peripheral turntable.

9. The method for measuring brake disc deformation as described in claim 8, characterized in that, The rotating mechanism includes a rotating handle, a rotating shaft, and an upper cover plate. The rotating shaft is mounted on the rotating handle's axis. Rotating the handle causes the rotating shaft to rotate along the axis, thereby driving the gears on the rotating shaft to rotate circumferentially. The gears on the rotating shaft mesh with the gears at the bottom of the turntable around the measuring platform.

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