Device for non-contact measurement of wear degree of pantograph carbon slide plate

Abstract

The utility model discloses a device for measuring the wear degree of a pantograph carbon slide plate in a non-contact manner, which comprises a supporting assembly, the supporting assembly comprises two supporting frames, and the two supporting frames are respectively connected with the two sides of the carbon slide plate through fasteners; the guide rod is transversely arranged between the two supporting frames; and the non-contact measuring piece is arranged on the guide rod in a sliding manner through a moving piece, and the non-contact measuring piece is positioned above the carbon slide plate to be measured. According to the utility model, the problems of easy missed measurement and artificial measurement error and reading error caused by the traditional measurement mode in the prior art are solved. The non-contact measuring piece can continuously move to measure the abrasion of the pantograph carbon slide plate, and the distance between measuring points is small; and sampling of thousands of sampling points can be carried out in a to-be-detected area of the carbon slide plate. Therefore, the occurrence of missed detection is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a device for non-contact measurement of the wear degree of a pantograph carbon slide plate. Background Art

[0002] High-speed locomotives and subway locomotives are very common in daily life. They are powered by electricity. After the electricity received by the locomotive is converted, the driving motor provides driving power for the locomotive. The power supply is provided by the power cable suspended above the locomotive's travel track, and the power is introduced into the locomotive through the contact between the pantograph installed above the locomotive and the power cable.

[0003] The pantograph is a key component of the electric locomotive. When the pantograph is lifted, the upper surface of the carbon slide plate on the pantograph contacts the power cable above the railway. During the movement of the locomotive, the electric power is continuously obtained by sliding in the form of mutual surface friction.

[0004] The key part of the pantograph for friction power generation is the carbon slide plate, which is made of graphite material with good wear resistance and contact conductivity. It is in the shape of a rectangular strip. Due to the high-speed friction between the power cable and the carbonized plate on the pantograph during the vehicle's movement, the carbonized plate on the pantograph will be worn to a certain extent after a period of use, and the thickness of the carbon slide plate will decrease, which will cause poor contact and power supply sparks. This will cause energy loss, damage locomotive equipment, and endanger travel safety.

[0005] The power cable above the railway is erected along the top of the railway line, and its direction is a zigzag track with the center line of the rail as the center. Therefore, the friction point between it and the carbonized plate is not fixed at a certain point of the carbonized plate during the movement of the vehicle, but swings left and right with the center of the carbonized plate as the center. This makes the wear of the carbon slide plate occur in a larger range of the center section of the carbon slide plate. Objectively achieve the purpose of uniform wear and extended service life.

[0006] Generally, the thickness of the carbonized plate will decrease after a period of use. When the thickness decreases to 8-10 mm, the carbonized plate needs to be replaced. To detect the wear degree of the carbonized plate, theoretically, it is necessary to measure the central use section of the carbonized plate, find out the most severely worn position and the thickness of the carbon plate at that position, and compare the maximum wear with the standard carbonized plate thickness to determine whether the carbon plate can continue to be used.

[0007] The conventional measurement method is to use a height gauge or caliper to measure the thickness of the carbon slide plate at intervals from left to right along the length of the carbon slide plate, generally using a total of 5 or 7 points around the center point.

[0008] However, due to the interval measurement, the measurement data is limited. This may cause the maximum wear point to be missed, resulting in misjudgment. In addition, traditional manual direct contact measurement will also introduce human measurement errors and reading errors. Utility Model Content

[0009] The technical problem to be solved by the utility model is to provide a device for non-contact measurement of the wear degree of the carbon slide plate of the pantograph, so as to solve the problem in the prior art that the traditional measurement method is prone to miss measurement and introduces artificial measurement error and reading error.

[0010] The utility model is realized by the following technical solutions:

[0011] A device for non-contact measurement of the wear degree of a pantograph carbon slide plate, comprising:

[0012] A support assembly, the support assembly comprising two support frames, the two support frames are respectively connected to two sides of the carbon slide plate through fasteners;

[0013] A guide rod, the guide rod being arranged transversely between the two support frames;

[0014] A non-contact measuring piece is slidably arranged on the guide rod through a moving piece and is located above the carbon slide plate to be measured.

[0015] Further optimized, the non-contact measuring device includes:

[0016] A sliding plate, wherein a measuring hole is provided at the center of the sliding plate, and the bottom of the sliding plate is connected to the moving part;

[0017] The distance measuring component is installed on the sliding plate and is used to measure the thickness value of each position of the carbon sliding plate.

[0018] Further optimized, the moving member includes a sliding sleeve slidably arranged on the guide rod, and the sliding sleeve is fixedly connected to the sliding plate.

[0019] Further optimized, the distance measuring component includes a first laser rangefinder and a second laser rangefinder, the first laser rangefinder is installed on the measuring hole and the laser passes through the measuring hole toward one side of the carbon slide board, and the second laser rangefinder is installed on one side of the sliding plate and the laser is directed toward one of the support frames.

[0020] Further optimization, in order to automatically store the values ​​of each position of the carbon slide board, is set as follows: a controller is also provided on the sliding plate, and the first laser rangefinder and the second laser rangefinder are both communicatively connected to the controller.

[0021] Further optimization, the controller is provided with a reset button and a measurement button.

[0022] According to further optimization, both of the support frames are provided with positioning holes for the ends of the carbon slide to pass through, and the fasteners include fastening screws extending into the positioning holes and used to fasten both sides of the carbon slide.

[0023] Further optimization, in order to ensure the stable installation of the guide rod, is set as follows: the support frames are each provided with mounting holes, and the two ends of the guide rod are respectively installed on the mounting holes of the two support frames.

[0024] Further optimization, in order to ensure the smooth sliding of the sliding plate, is set as follows: two guide rods are provided, the two guide rods are arranged in parallel and are both provided between the two support frames.

[0025] Further optimization, in order to facilitate the staff to manually drive the sliding plate, is set as follows: a handle is also provided on the top of the sliding plate.

[0026] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0027] 1. The non-contact measuring device can continuously move to measure the wear of the pantograph carbon slide plate, with a small distance between the measuring points; and within the measuring area of ​​the carbon slide plate, thousands of sampling points can be sampled, thereby reducing the occurrence of missed measurements.

[0028] 2. Through non-contact measurement of the carbon slide, the wear thickness of the carbon slide can be automatically measured, reducing the labor intensity in the measurement work; it has the advantages of high accuracy, fast speed and high reliability, reducing the occurrence of human measurement errors and reading errors, and can cause no mechanical damage to the working surface of the carbon slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0030] Figure 1 It is a schematic diagram of the structure of the pantograph and the carbon slide plate of the utility model;

[0031] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the support frame of the utility model;

[0033] Figure 4 This is a schematic diagram of the connection relationship between the moving part and the non-contact measuring part of the utility model;

[0034] Figure 5 It is a structural diagram of the controller of the utility model;

[0035] Figure 6This is a working principle diagram of the controller of the utility model.

[0036] Marks and corresponding parts names in the attached drawings:

[0037] 1- pantograph bracket, 2- carbon skateboard base plate, 3- pantograph horn, 4- carbon skateboard, 5- power cable, 6- power battery, 7- mounting hole, 8- support frame, 9- guide rod, 10- fastening screw, 11- sliding sleeve, 12- sliding plate, 13- second laser rangefinder, 14 handle, 15- first laser rangefinder, 16- controller, 17- reset button, 18- measurement button, 19- measurement hole, 20- current wear value display, 21- maximum wear value display, 22- maximum wear value position, 23- CPU board. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0039] Example 1

[0040] This embodiment 1 provides a device for non-contact measurement of the wear degree of the pantograph carbon slide plate, such as Figure 2 As shown, including:

[0041] A support assembly, the support assembly comprising two support frames 8, the two support frames 8 are respectively connected to two sides of the carbon slide plate through fasteners;

[0042] A guide rod 9, wherein the guide rod 9 is arranged transversely between the two support frames 8;

[0043] A non-contact measuring piece is slidably arranged on the guide rod 9 through a moving piece and is located above the carbon slide plate to be measured.

[0044] like Figure 1 As shown, in the prior art, the pantograph mechanism for locomotives is as follows: a carbon slide plate base plate 2 is welded on a pantograph bracket 1. The carbon slide plate 4 is fixed centrally on the top of the carbon slide plate base plate 2, and two pantograph horns 3 are fixed on both sides of the carbon slide plate 4 with screws, leaving a certain gap. When the vehicle draws electricity, the pantograph is lifted, and the upper surface of the carbon slide plate 4 contacts the power supply cable 5, and the electricity is introduced from the power supply cable 5 to the upper surface of the carbon slide plate 4 and used inside the locomotive. Because the power supply cable 5 zigzags along the center line of the rail when it is erected. Therefore, the power supply cable 5 forms a left-right movement on the upper surface of the carbon slide plate, evenly rubbing the upper surface of the carbon slide plate 4. After running for a period of time, the upper surface of the carbon slide plate 4 will be worn and needs to be inspected or replaced.

[0045] The commonly used measurement method is: use a height gauge or caliper to measure the thickness at limited points along the length of the carbon slide from left to right. Generally, a total of 5 or 7 points of center point measurement are used. Because it is an interval measurement, the measurement data is limited. This may miss the maximum wear point and cause misjudgment. In addition, traditional manual direct contact measurement will also introduce human measurement errors and reading errors.

[0046] In order to solve the above problems, this embodiment provides a non-contact measuring device, and its specific working process is as follows:

[0047] The two support frames 8 are respectively fixedly mounted on both sides of the carbon slide plate, and the two support frames 8 are firmly connected by fasteners to facilitate subsequent measurements.

[0048] The moving part drives the non-contact measuring part to slide on the guide rod 9 between the two support frames 8. The non-contact measuring part is located directly above the carbon slide plate for easy measurement. The non-contact measuring part can continuously move to measure the wear of the pantograph carbon slide plate. The distance between the measuring points is small; and thousands of sampling points can be sampled in the area to be measured of the carbon slide plate. This avoids the problem of missed measurement caused by insufficient sampling points during manual measurement.

[0049] like Figure 2 and Figure 3 As shown, in order to ensure the stable installation of the guide rod 9, it is configured as follows: the support frames 8 are each provided with a mounting hole 7, and the two ends of the guide rod 9 are respectively mounted on the mounting holes 7 of the two support frames 8.

[0050] Further, if Figure 4 and Figure 5 As shown, the non-contact measuring element comprises:

[0051] A sliding plate 12, wherein a measuring hole 19 is provided at the center of the sliding plate 12, and the bottom of the sliding plate 12 is connected to the moving part;

[0052] The distance measuring component is installed on the sliding plate 12 and is used to measure the thickness value of each position of the carbon sliding plate.

[0053] This embodiment uses the sliding plate 12 and the moving member to move the distance measuring component, thereby ensuring the stability of the distance measuring component sliding. Specifically, the moving member includes a sliding sleeve 11 slidably arranged on the guide rod 9, and the sliding sleeve 11 is fixedly connected to the sliding plate 12. The sliding sleeve 11 slides on the guide rod 9 to drive the sliding plate 12 to move left and right. It should be understood that the moving member in this embodiment is not limited to the form of the sliding sleeve 11, and can also be other auxiliary sliding moving members such as a slider, a moving block or a pulley.

[0054] In order to ensure the smooth sliding of the sliding plate 12 , the present embodiment is configured as follows: two guide rods 9 are provided, and the two guide rods 9 are arranged in parallel and are both provided between the two support frames 8 .

[0055] Specifically, Figure 4 As shown, two sliding sleeves 11 are provided on each guide rod 9, so the four sliding sleeves 11 can be fixedly installed at the four corners of the bottom of the sliding plate 12, ensuring that the sliding plate 12 slides in a directional and stable manner.

[0056] Further optimization, the two support frames 8 are provided with positioning holes for the ends of the carbon slide to pass through, and the fasteners include fastening screws 10 extending into the positioning holes and used to fasten the two sides of the carbon slide. The carbon slide is tightened by the two fastening screws 10, and the two support frames 8 are fixedly installed by means of the carbon slide.

[0057] Further optimized, the distance measuring component includes a first laser rangefinder 15 and a second laser rangefinder 13, the first laser rangefinder 15 is installed on the measuring hole 19 and the laser passes through the measuring hole 19 toward one side of the carbon slide board, and the second laser rangefinder 13 is installed on one side of the sliding plate 12 and the laser is directed toward one of the support frames 8.

[0058] Specifically, the first laser rangefinder 15 is installed at the measuring hole 19 in the center of the sliding plate 12. The vertically downward measuring light of the first laser rangefinder 15 can pass through the measuring hole 19 and illuminate the upper surface of the carbon slide board to measure the thickness of the carbon slide board.

[0059] The second laser rangefinder 13 is installed on the sliding plate 12, and its detection light can be irradiated horizontally to the right onto the right support frame 8 to form a non-contact measurement of the position of the sliding plate 12 relative to the carbon slide plate. Through the arrangement of the first laser rangefinder 15 and the second laser rangefinder 13, the device can automatically measure the wear thickness of each position of the carbon slide plate; this method has the advantages of high accuracy, high speed, high reliability and no mechanical damage to the working surface of the carbon slide plate.

[0060] Further optimization, such as Figure 6 and Figure 5 As shown, in order to automatically store the values ​​of each position of the carbon slide board, it is configured as follows: a controller 16 is also provided on the sliding plate 12 , and the first laser rangefinder 15 and the second laser rangefinder 13 are both communicatively connected to the controller 16 .

[0061] In this embodiment, the controller 16 is the control core. During this process, the controller 16 plays a role in storing and analyzing data.

[0062] like Figure 6The figure shows the working principle diagram of the controller 16. Specifically, after the first laser rangefinder 15 completes the distance measurement relative to the right support frame 8, the measurement result is transmitted to the CPU board 23 in the controller 16 through the RS485 communication protocol. At the same time, after the second laser rangefinder 13 completes the thickness measurement of the carbonized plate, the measurement result is also transmitted to the CPU board 23 through RS485; the power supply battery 6 supplies power to the CPU board 23, and then supplies power to the first laser rangefinder 15 and the second laser rangefinder 13 through the CPU board 23. When the measurement is completed, the CPU board 23 displays the calculated results on three data screens, namely the current wear value display 20, the maximum wear value display 21, and the maximum wear value position 22, for manual observation.

[0063] The specific working process of the controller 16 is:

[0064] During measurement, the sliding plate 12 is pushed to slide left and right manually, and the data measured by the second laser rangefinder 13 is used as the X position coordinate of the sampling measurement point (the distance from the second laser rangefinder 13 to the right support frame 8), and the data measured by the first laser rangefinder 15 is used as the Z position coordinate (the distance from the first laser rangefinder 15 to the upper surface of the carbon slide plate, which can be used to judge the thickness of the carbon slide plate). In the coordinate data (X, Z) format, a two-dimensional wear data table is formed and stored in the controller 16 for subsequent data processing by the controller 16. It can not only indicate the most serious wear, but also give the sampling position value of the wear at the same time. Finally, the controller 16 can automatically calculate the location of the largest wear point and the corresponding wear thickness; the wear thickness of the current measurement point is displayed in real time as a basis for judging the wear of the carbon slide plate.

[0065] Furthermore, the controller 16 is provided with a reset button 17 and a measurement button 18. In this embodiment, before measuring, pressing the reset button 17 on the controller 16 can reset the current wear value display 20 data, the maximum wear value display 21 data, and the maximum wear value position 22 data on the controller 16; pressing the measurement button 18 can start measuring the carbon slide. By setting the reset button 17 and the measurement button 18, it is ensured that the device can realize the simple and easy operation of the left and right benchmarks before measuring and ensure the integrity of the collected data during the entire measurement process.

[0066] Further optimization, in order to facilitate the staff to manually drive the sliding plate 12, it is configured as follows: a handle 14 is also provided on the top of the sliding plate 12.

[0067] When the device is in use, the sliding plate 12 is pushed and pulled left and right in the horizontal direction by manpower by manually pushing the handle 14 to facilitate the operation of the staff, and the pushing and pulling range must exceed the range required for detection.

[0068] In addition, the controllers 16 in this embodiment are all powered by batteries, without the need for external power supply wires, and are portable and can be used in the field.

[0069] The specific working process of the utility model is:

[0070] First, install two support frames 8, and fasten the support frames 8 to the carbon slide plate by tightening screws 10; install two guide rods 9 between the two support frames 8 through mounting holes 7 on different support frames 8; the sliding sleeve 11 slides through the guide rod 9 and is connected to the sliding plate 12; the controller 16, the first laser rangefinder 15, the second laser rangefinder 13 and other measuring devices are placed on the sliding plate 12.

[0071] Pressing the reset button 17 on the controller 16 will reset all the current wear value display 20 data, the maximum wear value display 21 data and the maximum wear value position 22 data on the controller 16 to zero.

[0072] Then press the measurement button 18 to start measuring. At the beginning, the sliding plate 12 is located at the leftmost side of the guide rod 9. By manually pushing the handle 14 and pulling the sliding plate 12, the sliding plate 12 moves slowly and evenly to the right under the drive of the sliding sleeve 11.

[0073] During the movement of the sliding plate 12, the data measured by the second laser rangefinder 13 is used as the X position coordinate of the sampling measurement point (the distance from the second laser rangefinder 13 to the right support frame 8), and the data measured by the first laser rangefinder 15 is used as the Z position coordinate (the distance from the first laser rangefinder 15 to the upper surface of the carbon slide plate, which can be used to judge the thickness of the carbon slide plate). In the coordinate data (X, Z) format, a two-dimensional wear data table is formed and stored in the controller 16 for subsequent data processing by the controller 16. It can not only indicate the most serious wear amount, but also give the sampling position value of the wear at the same time. Finally, the controller 16 can automatically calculate the location of the largest wear point and the corresponding wear thickness; and display the wear thickness of the current measurement point in real time as the basis for judging the wear of the carbon slide plate for manual observation. When the sliding plate 12 reaches the position of the support frame 8 on the right side; stop pushing at this time, and press the measurement button 18 again once, indicating that this measurement is over.

[0074] At this time, the controller 16 will automatically measure thousands of sets of data at high speed, and when the measurement button 18 is pressed again manually (indicating the end of measurement), these data will be locked, and traversal calculations will be performed to eliminate interference data, perform slope compensation, and calculate the maximum wear value and the X-lateral position value of the sampling point; finally, they will be displayed on the display screens for the maximum wear value display 21 data and the maximum wear value position 22 data respectively.

[0075] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for non-contact measurement of the wear degree of a pantograph carbon slide plate, characterized in that: include: A support assembly, the support assembly comprising two support frames (8), the two support frames (8) being respectively connected to two sides of the carbon slide plate via fasteners; A guide rod (9), wherein the guide rod (9) is arranged transversely between the two support frames (8); A non-contact measuring piece is slidably arranged on a guide rod (9) through a moving piece and is located above the carbon slide plate to be measured.

2. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 1 is characterized in that: The non-contact measuring element comprises: A sliding plate (12), wherein a measuring hole (19) is provided at the center of the sliding plate (12), and the bottom of the sliding plate (12) is connected to the moving part; A distance measuring component is installed on the sliding plate (12) and is used to measure the thickness value of each position of the carbon sliding plate.

3. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 2 is characterized in that: The moving member comprises a sliding sleeve (11) slidably arranged on a guide rod (9), and the sliding sleeve (11) is fixedly connected to a sliding plate (12).

4. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 2 is characterized in that: The distance measuring component comprises a first laser distance meter (15) and a second laser distance meter (13); the first laser distance meter (15) is mounted on a measuring hole (19) and a laser passes through the measuring hole (19) toward one side of the carbon slide plate; the second laser distance meter (13) is mounted on one side of the sliding plate (12) and a laser is directed toward one of the support frames (8).

5. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 2 is characterized in that: The sliding plate (12) is also provided with a controller (16), and the first laser rangefinder (15) and the second laser rangefinder (13) are both communicatively connected to the controller (16).

6. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 5 is characterized in that: The controller (16) is provided with a zeroing button (17) and a measuring button (18).

7. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 2 is characterized in that: A handle (14) is also provided on the top of the sliding plate (12).

8. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 1 is characterized in that: The two support frames (8) are each provided with a positioning hole for the end of the carbon slide plate to pass through, and the fastener comprises a fastening screw (10) extending into the positioning hole and used for fastening both sides of the carbon slide plate.

9. The device for non-contact measurement of pantograph carbon slide wear according to claim 1, characterized in that: The two support frames (8) are both provided with mounting holes (7), and the two ends of the guide rod (9) are respectively mounted on the mounting holes (7) of the two support frames (8).

10. The device for non-contact measurement of the wear degree of the pantograph carbon slide plate according to claim 9, characterized in that: Two guide rods (9) are provided, and the two guide rods (9) are arranged in parallel and are both provided between the two support frames (8).

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