High-speed rail wheel-mounted brake disc abrasion automatic detection device and detection method

Abstract

The invention relates to the technical field of brake disc detection, and discloses a high-speed rail wheel-mounted brake disc abrasion automatic detection device and detection method.The device comprises a base, two supporting frames are fixed to the top end of the base at intervals, and the two ends of a wheel shaft are supported on the two supporting frames respectively; the portal frame is fixed at the top end of the base; the longitudinal moving mechanism is fixed on the portal frame; the number of the laser displacement sensors is two, the laser displacement sensors are fixed to the moving end of the longitudinal moving mechanism in a spaced mode, and the brake disc on the wheel shaft is located between the two laser displacement sensors. The longitudinal moving mechanism drives the two laser displacement sensors to longitudinally move downwards along the working disc face of the brake disc, then the height change of the working disc face of the brake disc can be measured, and finally abrasion of the working disc face of the brake disc is measured. Therefore, the device can complete the automatic detection of the abrasion of the non-contact high-speed rail wheel-mounted brake disc, saves a large amount of manual labor and time, and improves the detection precision.

Description

Technical Field

[0001] The present invention relates to the technical field of brake disc detection, and more particularly to an automatic detection device and method for wear of a high-speed railway wheel-mounted brake disc. Background Art

[0002] During the operation of high-speed railways, the friction contact between the brake pads and the brake discs is an effective means to achieve high-speed braking, precise parking and stable speed regulation of high-speed railways. With the continuous increase in the operating speed of high-speed railways, the wear problem of brake discs has become increasingly prominent, seriously affecting the safety of railway transportation. Plateau railways have the characteristics of high bridge-tunnel ratio, many long and steep slopes, high altitude and extremely complex natural geographical environment. High-speed railways are often in traction or braking state when running in the above complex environment for a long time, and the wear of their brake discs is more serious than in plain areas. At present, the wear detection of high-speed railway wheel-mounted brake discs mainly adopts manual measurement, which has low labor efficiency and human errors, and can no longer meet the needs of safe operation of modern high-speed railways.

[0003] Therefore, how to provide a high-speed rail wheel-mounted brake disc wear automatic detection device and detection method that can realize automatic and accurate detection and improve detection efficiency is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention provides a high-speed railway wheel-mounted brake disc wear automatic detection device and detection method that can realize automatic and accurate detection and improve detection efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A high-speed railway wheel-mounted brake disc wear automatic detection device, comprising:

[0007] A base, wherein two support frames are fixed at intervals on the top of the base, and the two ends of the wheel axle are respectively supported on the two support frames;

[0008] A gantry frame, wherein the gantry frame is fixed on the top of the base;

[0009] A longitudinal moving mechanism, wherein the longitudinal moving mechanism is fixed on the gantry;

[0010] Laser displacement sensors, there are two laser displacement sensors, which are fixed at intervals on the moving ends of the longitudinal moving mechanism, and the brake disc on the wheel axle is located between the two laser displacement sensors.

[0011] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a high-speed railway wheel-mounted brake disc wear automatic detection device, which drives two laser displacement sensors to move longitudinally downward along the working disc surface of the brake disc through a longitudinal moving mechanism, thereby measuring the height change of the working disc surface of the brake disc, and finally measuring the wear of the working disc surface of the brake disc. Therefore, the device can complete non-contact high-speed railway wheel-mounted brake disc wear automatic detection, saving a lot of manpower and time, and improving detection accuracy.

[0012] Furthermore, the two support frames each include:

[0013] A support seat, the bottom end of which is fixed on the top end of the base;

[0014] Support bearings, the support bearings are two spaced apart and are respectively mounted on the top of the support seat through support bolts, and the shaft end of the wheel axle is supported on the two support bearings.

[0015] The beneficial effect of adopting the above technical solution is that the supporting bearing allows the wheel axle to rotate, and then during the detection process, the brake disc can be rotated to realize the detection of wear at different positions of the working disc surface of the brake disc.

[0016] Furthermore, the support seat comprises:

[0017] A lower support seat, the bottom end of which is fixed to the top of the base, and a first positioning key slot is provided on the top of the lower support seat;

[0018] An upper support seat, wherein the bottom end of the upper support seat is fixedly connected with the bottom end of the lower support seat by bolts, a second positioning key slot is provided on the bottom end of the upper support seat, and the two support bearings are respectively installed on the top end of the upper support seat by the support bolts;

[0019] Positioning keys, each of which is embedded in the first positioning key slot and the second positioning key slot.

[0020] The beneficial effect of adopting the above technical scheme is: when tightening the bolts connecting the lower support seat and the upper support seat, the positioning key is inserted into the first positioning key slot and the second positioning key slot, and then the bolts are tightened. In this way, the positioning key can ensure that the upper support seat is installed on the lower support seat without offset, thereby ensuring that the two upper support seats are installed parallel to each other, that is, the parallelism between the supporting bearings on the top ends of the two upper support seats is ensured, so that the two ends of the wheel axle can be placed on the supporting bearings of the two support frames without offset, and finally the verticality of the working disc surface of the brake disc and the probe of the laser displacement sensor is ensured, which can improve the detection accuracy.

[0021] Furthermore, the upper support seat comprises:

[0022] A main support plate, wherein the bottom end of the main support plate is fixedly connected to the bottom end of the lower support seat by bolts, the bottom end of the main support plate is provided with the second positioning key groove, and the top end surface of the main support plate is provided with a first supporting groove adapted to the end of the wheel axle;

[0023] A secondary support plate, the bottom of the secondary support plate is fixedly connected to one side of the main support plate by bolts, the top surface of the secondary support plate is provided with a second supporting groove adapted to the end of the wheel axle, the secondary support plate and the main support plate are arranged at intervals, and two supporting bolts are fixed between the two, and the inner ring of the supporting bearing is fixed on the supporting bolts.

[0024] The beneficial effect of adopting the above technical solution is: the upper support seat is divided into a main support plate and a secondary support plate which are arranged at intervals, so that the supporting bearing can be installed between the two to achieve the support and rotation of the wheel axle.

[0025] Furthermore, the longitudinal movement mechanism comprises:

[0026] A longitudinal movable housing, one side of which is open, a U-shaped plate is fixed to the lower end of the longitudinal movable housing, and the laser displacement sensors are respectively fixed on both sides of the U-shaped plate;

[0027] A ball screw mechanism is installed inside the longitudinal moving shell, and a fixed plate is fixed to the slide on the ball screw mechanism, and the fixed plate is fixed to the crossbeam of the gantry.

[0028] Furthermore, the ball screw mechanism comprises:

[0029] A driving motor, wherein the driving motor is fixed to one side of the interior of the longitudinally movable housing;

[0030] A ball screw, both ends of which are respectively installed inside the longitudinally movable housing through bearing seats, and one end of the ball screw is fixedly connected to the driving end of the driving motor;

[0031] Slide rails, the slide rails are two slide rails fixed at intervals inside the longitudinally movable housing and located on both sides of the ball screw;

[0032] The slide is threadably connected to the ball screw, and two sides of the slide are respectively slidably connected to the two slide rails.

[0033] The beneficial effect of adopting the above technical solution is: when the driving motor drives the ball screw to rotate, because the slide is fixed to the gantry through the fixed plate, and because the slide is connected to the ball screw by threaded transmission, the ball screw is equivalent to the longitudinal movement of the slide, that is, the longitudinal moving shell can move longitudinally, and finally the two laser displacement sensors are moved along the longitudinal direction of the brake disc, thereby achieving the purpose of automatic detection.

[0034] Furthermore, the laser displacement sensor is fixed in a protective bracket, and the protective bracket is fixedly connected to the U-shaped plate.

[0035] The beneficial effect of adopting the above technical solution is that the laser displacement sensor is an important detection component of the device, and the protective bracket can protect the laser displacement sensor to avoid damage due to bumps.

[0036] Furthermore, the protection bracket has a heat dissipation hole for facilitating heat dissipation of the laser displacement sensor.

[0037] The beneficial effect of adopting the above technical solution is: facilitating the heat dissipation of the laser displacement sensor and avoiding the influence of insufficient heat dissipation on the detection accuracy.

[0038] The present invention provides a method for automatically detecting wear of a high-speed railway wheel-mounted brake disc, using the automatic detection device to perform the following detection steps:

[0039] Step 1: placing the two ends of the wheel axle of the brake disc to be tested on the support frame respectively, at this time, the brake disc is located between the two laser displacement sensors;

[0040] Step 2: The longitudinal moving mechanism drives the two laser displacement sensors to move downward, and the two laser displacement sensors detect the wear of the working disc surface of the brake disc: H-wear amount, T-wear depth, S-oblique wear amount.

[0041] Furthermore, in step 2: after the two laser displacement sensors complete the longitudinal detection, the brake disc is rotated, and the two laser displacement sensors perform detection again, and the above operation is repeated to complete the detection of the working disc surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0043] Figure 1 This is a schematic diagram of the axle-side structure of an automatic detection device for wear of high-speed railway wheel-mounted brake discs provided by the present invention.

[0044] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of local A in the middle.

[0045] Figure 3 This is a schematic diagram of the main structure of a high-speed railway wheel-mounted brake disc wear automatic detection device provided by the present invention.

[0046] Figure 4 A side structural schematic diagram of a high-speed railway wheel-mounted brake disc wear automatic detection device provided by the present invention.

[0047] Figure 5 It is a structural schematic diagram of the longitudinal moving mechanism.

[0048] Figure 6 It is a structural schematic diagram of the support frame from the first perspective.

[0049] Figure 7 It is a structural schematic diagram of the support frame from a second perspective.

[0050] Figure 8 A schematic diagram of the partially exploded structure of the support frame.

[0051] Fig. 9 Schematic diagram of the laser displacement sensor being set inside the protective bracket.

[0052] Fig.10 This is a schematic diagram of the wear detection of high-speed rail wheel-mounted brake discs. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] like Figure 1-Figure 10 As shown, the embodiment of the present invention discloses a high-speed railway wheel-mounted brake disc wear automatic detection device, comprising:

[0055] A base 1, two support frames 2 are fixed at intervals on the top of the base 1, and two ends of the axle 100 are supported on the two support frames 2 respectively;

[0056] A gantry 3, which is fixed on the top of the base 1;

[0057] A longitudinal moving mechanism 4, wherein the longitudinal moving mechanism 4 is fixed on the gantry 3;

[0058] There are two laser displacement sensors 5, which are fixed at intervals on the moving ends of the longitudinal moving mechanism 4, respectively. The brake disc 200 on the axle 100 is located between the two laser displacement sensors 5, and the probes of the two laser displacement sensors 5 are respectively facing the working disc surfaces on both sides of the brake disc 200. The detection signals of the two laser displacement sensors 5 can be sent to a computer, and the wear of the brake disc can be calculated by the computer.

[0059] After the wheel axle 100 of the high-speed railway wheel-mounted brake disc is supported on the support frame 2, the moving end of the longitudinal moving mechanism 4 drives the two laser displacement sensors 5 to move downward synchronously, and the wear of the high-speed railway wheel-mounted brake disc can be obtained through the readings of the two laser displacement sensors 5.

[0060] There may be two longitudinal moving mechanisms 4 and two groups of laser displacement sensors 5, so that the wear of the brake discs at both ends of the axle can be detected simultaneously, thereby improving the detection efficiency.

[0061] The two support frames 2 each include:

[0062] A support base 21, the bottom end of the support base 21 is fixed on the top end of the base 1;

[0063] The supporting bearings 22 are two spaced apart and are respectively mounted on the top of the support seat 21 through supporting bolts 23 . The shaft end of the wheel axle 100 is supported on the two supporting bearings 22 .

[0064] The support base 21 comprises:

[0065] A lower support seat 211, the bottom end of the lower support seat 211 is fixed on the top end of the base 1, and a first positioning key slot 2111 is provided on the top end of the lower support seat 211;

[0066] The upper support seat 212, the bottom end of the upper support seat 212 is fixedly connected with the bottom end of the lower support seat 211 by bolts, the bottom end of the upper support seat 212 is provided with a second positioning key slot 21211, and two supporting bearings 22 are respectively installed on the top end of the upper support seat 212 by supporting bolts 23;

[0067] The positioning key 213 is embedded in the first positioning key groove 2111 and the second positioning key groove 21211 .

[0068] The upper support seat 212 includes:

[0069] A main support plate 2121, the bottom end of the main support plate 2121 is fixedly connected to the bottom end of the lower support seat 211 by bolts, a second positioning key slot 21211 is provided on the bottom end of the main support plate 2121, and a first supporting groove 21212 adapted to the shaft end of the wheel axle 100 is provided on the top surface of the main support plate 2121;

[0070] The auxiliary support plate 2122, the bottom of the auxiliary support plate 2122 is fixedly connected to one side of the main support plate 2121 by bolts, and the top surface of the auxiliary support plate 2122 has a second supporting groove 21221 adapted to the shaft end of the wheel axle 100, the auxiliary support plate 2122 and the main support plate 2121 are arranged at intervals, and two supporting bolts 23 are fixed between the two, and the inner ring of the supporting bearing 22 is fixed on the supporting bolts 23.

[0071] The longitudinal movement mechanism 4 comprises:

[0072] A longitudinal movable housing 41, one side of which is open, a U-shaped plate 42 is fixed to the lower end of the longitudinal movable housing 41, and laser displacement sensors 5 are respectively fixed on both sides of the U-shaped plate 42;

[0073] The ball screw mechanism 43 is installed inside the longitudinal moving housing 41 . The slide 435 on the ball screw mechanism 43 is fixed with a fixing plate 44 , and the fixing plate 44 is fixed on the crossbeam of the gantry 3 .

[0074] The ball screw mechanism 43 comprises:

[0075] A driving motor 431, which is fixed to one side of the interior of the longitudinally movable housing 41;

[0076] A ball screw 432, both ends of which are installed inside the longitudinal moving housing 41 through bearing seats 433, and one end of the ball screw 432 is fixedly connected to the driving end of the driving motor 431;

[0077] Slide rails 434, which are two slide rails fixed at intervals inside the longitudinal moving housing 41 and located on both sides of the ball screw 432;

[0078] The slide 435 is threadedly connected to the ball screw 432 , and two sides of the slide 435 are respectively slidably connected to the two slide rails 434 .

[0079] The laser displacement sensor 5 is fixed in the protective bracket 6, and the protective bracket 6 is fixedly connected to the U-shaped plate 42. The protective bracket 6 has a heat dissipation hole 61 for facilitating heat dissipation of the laser displacement sensor 5. The laser displacement sensor 5 is a key component of the present invention and directly affects the detection accuracy. Therefore, the protective bracket 6 is used for protection, and the heat dissipation hole is provided at the same time, which plays a better protective role while not affecting the heat dissipation of the laser displacement sensor 5.

[0080] A method for automatically detecting wear of a high-speed railway wheel-mounted brake disc, using the above-mentioned automatic detection device to perform the following detection steps:

[0081] Step 1: Place the two ends of the axle 100 of the brake disc 200 to be tested on the support frame 2 respectively. At this time, the brake disc 200 is located between the two laser displacement sensors 5;

[0082] Step 2: The longitudinal moving mechanism 4 drives the two laser displacement sensors 5 to move downward, and the two laser displacement sensors 5 detect the wear of the working disc surface of the brake disc 200: H-wear amount, T-wear depth, S-oblique wear amount.

[0083] In step 2: after the two laser displacement sensors 5 have completed the longitudinal detection, the brake disc 200 is rotated to a certain angle, and the two laser displacement sensors 5 are detected again. After that, the brake disc 200 is rotated a certain angle again, and the two laser displacement sensors 5 are detected again. The above operations are repeated to complete the detection of different positions of the circumferential direction of the working disc surface of the brake disc.

[0084] In step 2, the specific wear detection method is: assuming that the reading of the left laser displacement sensor is x1, and the reading of the right laser displacement sensor is x2, before entering the working disc surface of the high-speed rail brake disc, the wear depth T can be measured, and after entering the working disc surface, the wear of the high-speed rail wheel-mounted brake disc can be measured, where the maximum value x measured in the left measurement interval is 1max and the minimum value x 1min , the oblique wear amount S = x 1max -x 1min , the maximum value x measured in the right measurement interval 2max and the minimum value x 2min , the wear amount H = x 2max -x 2min .

[0085] The present invention measures two laser displacement sensors perpendicular to the surface of the high-speed railway brake disc to obtain the height change of the working disc surface of the brake disc, thereby completing non-contact automatic detection of high-speed railway wheel-mounted brake disc wear, saving a lot of manpower and time and improving detection accuracy.

[0086] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0087] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic detection device for wear of high-speed rail wheel-mounted brake discs, It is characterized in that include: A base (1), wherein two support frames (2) are fixed at intervals on the top of the base (1), and the two ends of the wheel axle (100) are respectively supported on the two support frames (2); A gantry (3), wherein the gantry (3) is fixed on the top of the base (1); A longitudinal moving mechanism (4), wherein the longitudinal moving mechanism (4) is fixed on the gantry (3); Laser displacement sensors (5), wherein the number of the laser displacement sensors (5) is two and the sensors are fixed at intervals on the moving ends of the longitudinal moving mechanism (4), respectively, and the brake disc (200) on the wheel axle (100) is located between the two laser displacement sensors (5).

2. According to claim 1, a high-speed railway wheel-mounted brake disc wear automatic detection device, It is characterized in that The two support frames (2) each comprise: A support seat (21), the bottom end of the support seat (21) is fixed on the top end of the base (1); Support bearings (22), two of which are arranged at intervals and are respectively mounted on the top of the support seat (21) through support bolts (23), and the shaft end of the wheel axle (100) is supported on the two support bearings (22).

3. According to claim 2, a high-speed railway wheel-mounted brake disc wear automatic detection device, It is characterized in that The support seat (21) comprises: A lower support seat (211), the bottom end of the lower support seat (211) is fixed on the top end of the base (1), and a first positioning key groove (2111) is provided on the top end of the lower support seat (211); An upper support seat (212), wherein the bottom end of the upper support seat (212) is fixedly connected to the bottom end of the lower support seat (211) by bolts, a second positioning key slot (21211) is provided on the bottom end of the upper support seat (212), and the two supporting bearings (22) are respectively mounted on the top end of the upper support seat (212) by the supporting bolts (23); A positioning key (213), wherein the positioning key (213) is embedded in the first positioning key slot (2111) and the second positioning key slot (21211).

4. According to claim 3, a high-speed railway wheel-mounted brake disc wear automatic detection device, It is characterized in that The upper support seat (212) comprises: A main support plate (2121), the bottom end of the main support plate (2121) is fixedly connected to the bottom end of the lower support seat (211) by bolts, the bottom end of the main support plate (2121) is provided with the second positioning key groove (21211), and the top end surface of the main support plate (2121) is provided with a first supporting groove (21212) adapted to the shaft end of the wheel axle (100); A secondary support plate (2122), the bottom of the secondary support plate (2122) is fixedly connected to one side of the main support plate (2121) by bolts, the top end surface of the secondary support plate (2122) is provided with a second supporting groove (21221) adapted to the axial end of the wheel axle (100), the secondary support plate (2122) and the main support plate (2121) are arranged at intervals, and two supporting bolts (23) are fixed between the two, and the inner ring of the supporting bearing (22) is fixed on the supporting bolts (23).

5. An automatic detection device for wear of high-speed railway wheel-mounted brake discs according to any one of claims 1 to 4, It is characterized in that The longitudinal movement mechanism (4) comprises: A longitudinally movable housing (41), one side of the longitudinally movable housing (41) being open, a U-shaped plate (42) being fixed to the lower end of the longitudinally movable housing (41), and the laser displacement sensors (5) being fixed to both sides of the U-shaped plate (42); A ball screw mechanism (43), the ball screw mechanism (43) is installed inside the longitudinal moving housing (41), the slide table (435) on the ball screw mechanism (43) is fixed with a fixing plate (44), and the fixing plate (44) is fixed on the crossbeam of the gantry (3).

6. The automatic detection device for wear of high-speed railway wheel-mounted brake disc according to claim 5, It is characterized in that The ball screw mechanism (43) comprises: A driving motor (431), wherein the driving motor (431) is fixed to one side inside the longitudinally movable housing (41); A ball screw (432), wherein both ends of the ball screw (432) are respectively installed inside the longitudinal movable housing (41) via bearing seats (433), and one end of the ball screw (432) is fixedly connected to the driving end of the driving motor (431); Slide rails (434), the slide rails (434) being two fixed at intervals inside the longitudinal moving housing (41) and located on both sides of the ball screw (432); A slide (435), the slide (435) is threadedly connected to the ball screw (432), and two sides of the slide (435) are respectively slidably connected to the two slide rails (434).

7. The automatic detection device for wear of high-speed railway wheel-mounted brake discs according to claim 5, It is characterized in that The laser displacement sensor (5) is fixed in a protective bracket (6), and the protective bracket (6) is fixedly connected to the U-shaped plate (42).

8. The automatic detection device for wear of high-speed railway wheel-mounted brake discs according to claim 7, It is characterized in that The protective bracket (6) is provided with a heat dissipation hole (61) for facilitating heat dissipation of the laser displacement sensor (5).

9. A method for automatically detecting wear of high-speed rail wheel-mounted brake discs. It is characterized in that Use the automatic detection device as described in any one of claims 1 to 8 to perform the following detection steps: Step 1: placing the two ends of the axle (100) of the brake disc (200) to be tested on the support frame (2) respectively, wherein the brake disc (200) is located between the two laser displacement sensors (5); Step 2: The longitudinal moving mechanism (4) drives the two laser displacement sensors (5) to move downward, and the two laser displacement sensors (5) detect the wear of the working disc surface of the brake disc (200): H-wear amount, T-wear depth, S-oblique wear amount.

10. The method for automatically detecting wear of high-speed railway wheel-mounted brake discs according to claim 9, It is characterized in that In step 2: after the two laser displacement sensors (5) have completed the longitudinal detection, the brake disc (200) is rotated, and the two laser displacement sensors (5) perform detection again, and the above operation is repeated to complete the detection of the working disc surface.

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