A high-precision milling and grinding device for pantograph carbon slide plates

Abstract

A kind of high-precision milling equipment for pantograph carbon slide, it includes frame, positioning device, milling device, dust extraction device and detection device, the frame includes base and mounting bracket, the positioning device is set on the top surface of base, milling device, part dust extraction device and detection device are all set on mounting bracket;First guide rail is provided on the top surface of base, the positioning device includes moving plate and positioning assembly set on the top surface of moving plate, moving plate is equipped on first guide rail, the positioning assembly includes several positioning strips extending from front to back, several positioning slots are provided on each positioning strip, and the positioning slots of corresponding position on several positioning strips are one-to-one corresponding;Positioning slot middle part is provided with position adjusting assembly, and the positioning slot is divided into two sub-positioning slots by the position adjusting assembly.The milling equipment of the utility model has the advantages of high efficiency, high precision, strong practicality and strong popularization significance.

Description

Technical Field

[0001] This utility model relates to the field of carbon slide plate processing technology, and in particular to a high-efficiency, high-precision milling equipment for pantograph carbon slide plates. Background Technology

[0002] The pantograph carbon sliding plate is a key component for electric locomotives and EMUs to reliably draw current from the overhead contact line. During operation, it is in continuous contact with the overhead contact line conductor, and friction and impact are constantly generated between them. Therefore, this component is a consumable part that needs to be frequently repaired and replaced.

[0003] Traditional repair methods mainly rely on manual grinding, which suffers from low efficiency, inconsistent quality, and harsh working environments. To improve repair quality and efficiency, automated milling and grinding equipment has emerged, such as the fully automatic milling and grinding equipment described in Chinese Patent 202323642855.8, which uses automated equipment for modification, improving efficiency, quality, and working environment.

[0004] However, with the continuous growth of rail transit traffic, the demand for carbon sliding plate repair is increasing, placing higher demands on repair efficiency. Existing automated equipment can only repair one product at a time, and the loading, unloading, positioning, and clamping of each product consumes a significant amount of auxiliary time, limiting further improvements in overall operational efficiency. Furthermore, traditional pantographs typically use side positioning posts and a top positioning block for fixed positioning, with a fixed width structure, suitable only for positioning products of a single size. If the product size is too small, the positioning accuracy is insufficient, affecting processing quality; if the size is too large, it may lead to installation failure or overpressure damage to the carbon sliding plate. Utility Model Content

[0005] Therefore, it is necessary to provide a high-efficiency, high-precision milling device for pantograph carbon slide plates to address the shortcomings of existing technologies.

[0006] A high-precision milling machine for pantograph carbon sliders includes a frame, a positioning device, a milling device, a dust collection device, and a detection device. The frame includes a base and a mounting frame. The positioning device is disposed on the top surface of the base, and the mounting frame is disposed outside the positioning device and extends upward. The milling device, part of the dust collection device, and the detection device are all disposed on the mounting frame. A positioning plate is disposed on the top surface of the base, and a first guide rail is disposed on the top surface of the positioning plate. The positioning device includes a movable plate and a positioning component disposed on the top surface of the movable plate. The movable plate is mounted on the first guide rail and moves back and forth along the first guide rail. The positioning component includes a plurality of positioning elements extending from front to back. Each positioning strip has several positioning grooves, with corresponding positioning grooves on the various positioning strips corresponding one-to-one. An adjustment component is located in the middle of each positioning groove, dividing it into two sub-positioning grooves. The adjustment component includes two limiting plates and an adjustment plate positioned between the two limiting plates. Both the limiting plates and the adjustment plate are bolted to the positioning strip. Each limiting plate has an adjustment groove, and the sides of the adjustment plate that contact the limiting plates have guide slopes extending from top to bottom towards the inside of the adjustment plate. Correspondingly, the surfaces of the limiting plates that contact the adjustment plate are also inclined, with the slope consistent with the adjacent guide slopes.

[0007] Furthermore, the outermost two positioning strips of the positioning component are provided with limiting grooves on their inner and outer sides. The limiting grooves are provided on the positioning strips below the two sides of the sub-positioning groove. Two sets of guide posts are provided downward on the bottom surfaces of both ends of the pantograph carbon slide plate. The two sets of guide posts are respectively fitted into the limiting grooves on both sides of the sub-positioning groove.

[0008] Furthermore, a vacuum suction cup is embedded in the bottom of the positioning groove, and the bottom end face of the pantograph carbon slide plate is adsorbed onto the vacuum suction cup.

[0009] Furthermore, the mounting frame includes two uprights and a crossbeam connected to the two uprights. A second guide rail is provided on the crossbeam along its extension direction. The milling device is mounted on the second guide rail and can move along the second guide rail. The milling device includes a mounting base, a milling drive device, a cutting tool, and a protective cover. A third guide rail extending vertically is provided on the outer side of the mounting base. The cutting tool is mounted on the bottom end of the milling drive device, and the milling drive device is mounted on the third guide rail and moves vertically along the third guide rail.

[0010] Furthermore, the protective cover is disposed on the outside of the tool. The protective cover has a cylindrical structure, with the tool centered inside it and the bottom part extending out of the protective cover.

[0011] Furthermore, the protective cover has a through hole on its side, and the vacuuming device is connected to the through hole through a vacuuming pipe.

[0012] Furthermore, the detection device includes a laser scanner, two cameras, and a displacement sensor, with the two cameras respectively positioned on both sides of the laser scanner.

[0013] Furthermore, the two cameras are respectively disposed on the two sides of the mounting base, and the cameras are mounted on vertically extending slide rails.

[0014] Furthermore, it also includes an air blowing device, which includes several high-pressure air nozzles, each corresponding to the surface of the cutting tool, the lens of the laser scanner, and the lens settings of the two cameras.

[0015] Furthermore, the two outermost positioning bars of the positioning device are movably installed, and the positioning bars are driven by a motor or cylinder to move horizontally to approach or move away from the adjacent positioning bars.

[0016] In summary, this utility model improves work efficiency and reduces downtime during clamping by incorporating a positioning device that can load multiple parts at once. The movable adjustment component for pantograph positioning offers greater flexibility, allowing for the flexible positioning of various product specifications. Furthermore, the same adjustment component can position two pantograph carbon slide plates, making full use of components and space. The dedicated dust extraction device significantly improves the working environment and reduces maintenance costs. In addition, the use of a detection device for targeted identification and reference of the aluminum support plate of the pantograph carbon slide plate can improve repair accuracy to a certain extent. This utility model is highly practical and has significant potential for widespread application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-precision milling device for a pantograph carbon sliding plate according to the present invention;

[0018] Figure 2 The picture shows Figure 1 A schematic diagram of the structure of a medium milling machine after removing the outer shell;

[0019] Figure 3 for Figure 2 Enlarged structural diagram of the center positioning groove and the adjustment component;

[0020] Figure 4 for Figure 2 A schematic diagram of the structure after removing the carbon fiber from the slide plate;

[0021] Figure 5 for Figure 4 A schematic diagram of the decomposition process;

[0022] Figure 6 for Figure 4 A schematic diagram of the second embodiment of the structure;

[0023] Figure 7 This is a partial structural schematic diagram of the third embodiment of the present utility model;

[0024] Figure 8 This is a partial structural schematic diagram of the fourth embodiment of the present utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0026] like Figures 1 to 5 As shown, this utility model provides a high-precision milling and grinding device 100 for pantograph carbon sliding plates, which is used to repair and process pantograph carbon sliding plates 200. This milling and grinding device can load multiple products to be processed at once and perform precise positioning, thereby improving work efficiency and repair quality.

[0027] The high-precision milling equipment for pantograph carbon slide plates includes a frame 10, a positioning device 20, a milling device 30, a dust collection device 40, a detection device 50, and a control system (not shown). The frame 10 includes a base 11 and a mounting frame 12. The positioning device 20 is disposed on the top surface of the base 11, and the mounting frame 12 is disposed outside the positioning device 20 and extends upward. The milling device 30, part of the dust collection device 40, and the detection device 50 are all disposed on the mounting frame 12. The control system is signal-connected to the milling device 30, the dust collection device 40, and the detection device 50 and controls the operation of each part and data storage and transmission.

[0028] A positioning plate 111 is provided on the top surface of the base 11, and a first guide rail 112 is provided on the top surface of the positioning plate 111. The positioning device 20 includes a movable plate 21 and a positioning component disposed on the top surface of the movable plate. A guide groove (not shown) is provided on the bottom surface of the movable plate 21, and the guide groove is embedded in the first guide rail 112. The movable plate 21 can move back and forth along the first guide rail 112. The positioning component is provided with a plurality of positioning groove groups arranged sequentially from front to back. Each positioning groove group includes at least two positioning grooves, and a pantograph carbon sliding plate 200 is installed in each group of positioning grooves. Specifically, in this embodiment, the positioning component includes a plurality of positioning strips 22 extending from front to back. Each positioning strip 22 is provided with a plurality of positioning grooves 221. The positioning grooves 221 at corresponding positions on the plurality of positioning strips 22 correspond one-to-one. The pantograph 200 is laterally embedded in the same row of positioning grooves 221 on the plurality of positioning strips 22.

[0029] In this embodiment, an adjustment component 23 is provided in the middle of the positioning groove 221, which divides the positioning groove 221 into two sub-positioning grooves 222. It is understood that in other embodiments, two or more adjustment components 23 may be installed in the positioning groove 221 to divide it into three or more sub-positioning grooves 222. The adjustment component 23 includes two limiting plates 231 and an adjustment plate 232 disposed between the two limiting plates 231. Both the limiting plates 231 and the adjustment plate 232 are bolted to the positioning strip 22. Each of the two limiting plates 231 is provided with an adjustment groove 2311, which extends along the extension direction of the positioning strip 22. The adjusting plate 232 has guide slopes 2321 on both sides where it contacts the limiting plate 231. The guide slopes 2321 extend from top to bottom towards the inside of the adjusting plate 232. Correspondingly, the surface of the limiting plate 231 that contacts the adjusting plate 232 is also inclined, and its tilting slope is consistent with that of the adjacent guide slopes 2321. In addition, a side plate extends upward from the top surface of the limiting plate 231 on the side away from the adjusting plate 232 to increase the force-bearing surface on the side of the carbon slide plate.

[0030] In use, first rotate the bolts to loosen the limiting plate 231 and adjusting plate 232. Then, embed a pantograph 200 into each of the sub-positioning grooves 222 on both sides of the adjusting component 23, with the side of the pantograph 200 away from the adjusting component 23 abutting against the side wall of the positioning groove 222. Next, press down on the adjusting plate 232, which pushes the two limiting plates 231 to move to both sides until the two limiting plates 231 clamp the pantograph 200. Finally, tighten the bolts to lock the adjusting plate 232 and the limiting plate 231, thus achieving the clamping and positioning of the pantograph 200. In this embodiment, this positioning device can clamp multiple pantographs 200 at once, reducing downtime for clamping and product changing compared to traditional single-feeding and processing, thereby improving work efficiency. Positioning is achieved through the combination of the two side walls of the positioning groove 221 and the adjusting component 23, resulting in high positioning accuracy; it is also applicable to the positioning and processing of products with various widths and dimensions, thus broadening its applicability.

[0031] In another embodiment, limiting grooves 223 are provided on both sides of the two outermost positioning strips 22 of the positioning component. These limiting grooves 223 are located on the positioning strips 22 below the sub-positioning grooves 222. Two sets of guide posts 201 extend downwards from the bottom surfaces of both ends of the pantograph 200. These guide posts 201 are respectively fitted into the limiting grooves 223 on both sides of the sub-positioning groove 222, thereby making the installation and positioning of the pantograph 200 more precise. This structure is suitable for situations where the distance from the guide post 201 to one side is fixed.

[0032] The mounting frame 12 includes two uprights 121 and a crossbeam 122 connecting the two uprights 121. A second guide rail 123 is provided on the crossbeam 122 along its extending direction. The milling device 30 is mounted on the second guide rail 123 and can move along it. The milling device 30 includes a mounting base 31, a milling drive device 32, a cutting tool (not shown), and a protective cover 33. A third guide rail 311 extending vertically is provided on the outer surface of the mounting base 31. The cutting tool is mounted on the bottom end of the milling drive device 32, which is mounted on the third guide rail 311 and can move vertically along it. The protective cover 33 is located outside the cutting tool and has an open bottom end; specifically, the protective cover 33 has a cylindrical structure, with the cutting tool centered inside it and its bottom portion extending outside the protective cover 33. The dust collection device 40 is connected to the through hole on the side of the protective cover 33 via the dust collection pipe 41 to promptly remove the debris generated by the blade grinding, thereby ensuring a clean environment. In this embodiment, the dust collection device 40 is a conventional device, therefore, its specific structure will not be described in detail.

[0033] The detection device 50 includes a laser scanner 51, two cameras 52, and a displacement sensor 53. The two cameras 52 are respectively disposed on both sides of the laser scanner 51. In this embodiment, the laser scanner 51 is a 3D line laser scanner, and the cameras 52 are industrial cameras. This utility model uses a high-precision 3D line laser scanner and dual industrial cameras to perform a full-area scan of the carbon slide plate (covering the aluminum support plate and the carbon slide plate), acquiring information on areas with excessive wear, surface defects (such as chips, cracks), and oxide layer distribution. During processing, the displacement sensor 53 will detect the deformation of the aluminum support plate 202 at the bottom of the pantograph 200 in the vertical direction in real time, and send the detected deformation amount to the control system in real time. The control system will immediately instruct the milling device 30 to perform a reverse equal-amount compensation movement; thereby ensuring the accuracy during processing. In this embodiment, the two cameras are respectively disposed on both sides of the mounting base 31; and the cameras are mounted on a vertically extending slide rail, which can be moved and adjusted vertically. Understandably, in another embodiment, the two cameras 52 can also be located on the same side, but with different shooting angles. Combining these different angles can further improve detection accuracy. In another embodiment, the laser scanner 51 and the two cameras 52 are not mounted on the mounting base 31, but are integrated into a single unit on an independent horizontal slide rail, which is parallel to the second guide rail. This reduces the impact of vibration during milling on the accuracy of scanning and imaging.

[0034] Furthermore, the high-precision milling equipment for pantograph carbon slide plates also includes an air blowing device (not shown in the figure). This air blowing device comprises several high-pressure air nozzles, which are respectively positioned on the tool surface, the laser scanner 51 lens, and the lenses of the two cameras 52, to blow away dust and ensure the clarity of scanning and imaging, as well as the precision of milling. More specifically, the high-pressure air nozzles are located on the sides of the cameras 52, the scanner 51 lens, and the tool, with the airflow direction at an angle to the lens surface and the tool surface area.

[0035] A housing 13 is also provided on the top surface of the base 11. The housing 13 surrounds the positioning device 20, milling device 30, dust collection device 40, and detection device 50. The control system includes a control panel, which is integrated on the outer surface of the housing 13. The control panel is provided with automatic mode buttons and manual mode buttons; automatic or manual control can be performed as needed.

[0036] In another embodiment, the control system further includes a rail transit intelligent operation and maintenance platform. The control panel uploads the detection data (initial wear amount, milling amount), milling parameters (path, time, tool wear) and re-inspection results of each carbon slide plate to the rail transit intelligent operation and maintenance platform. The platform combines historical data to perform wear trend analysis and accurately predict the next milling or replacement time of the carbon slide plate.

[0037] During operation, multiple pantographs 200 are first installed sequentially on the positioning device 20. After positioning, the detection device 50 moves left and right, and back and forth, to collect information from the carbon sliding plates of the pantographs 200. The milling device 30 then performs repair processing based on the data collected and analyzed by the detection device 50. In specific processing, data for one product can be collected and processed individually, followed by a re-inspection by the detection device to ensure repair quality. Then, data collection and repair processing for the next product are performed, repeating this process. Alternatively, information for all products can be collected at once, and all processing can be completed in one go. Furthermore, after repair, the detection device 50 must perform a re-inspection to ensure compliance with requirements.

[0038] like Figure 6 This is the second embodiment of the present invention. The structure of this embodiment is basically the same as that of the first embodiment. The difference is that, in this embodiment, a vacuum suction cup 224 is also embedded in the bottom of the positioning groove 221. The adsorption pressure of the vacuum suction cup 224 can be adjusted according to the requirements of the carbon slide plate. In addition, a pressure sensor (not shown) is also provided in the bottom surface of the positioning groove 221, which can monitor the adsorption force of the vacuum suction cup 224 on the pantograph 200 in real time to avoid damage to the carbon slide plate due to overpressure.

[0039] In this embodiment, the pantograph 200 is fixed and limited by the positioning component 23 and the vacuum suction cup 224, so that the pantograph is evenly stressed in the vertical direction and on both horizontal sides, reducing the probability of deformation; and it is more stable. No additional plate is needed at the top for limiting, avoiding the blind spot for modification caused by the top surface of the carbon slide plate being blocked.

[0040] like Figure 7 As shown, this is the third embodiment of the present invention. The structure of this embodiment is basically the same as that of the first embodiment, except that the two outermost positioning strips 22a of the positioning device 20 in this embodiment are movably installed. A moving hole 211a is provided on the top surface of the outer side of the moving plate 21a, and the bottom ends of the two outermost positioning strips 22a are embedded in the moving hole 211a. A lead screw 212a is provided on the side of the moving plate 21a, and the bottom ends of the positioning strips 22a are installed on the lead screw 212a. Rotating the lead screw 212a can push the positioning strips 22a to move in and out, so that it can be used for positioning pantographs 200 of various lengths. If the length is larger, the outermost positioning strips 22a are moved outward, and vice versa, they are moved inward until they match the product size.

[0041] like Figure 8 As shown, this is the third embodiment of the present invention. In this embodiment, multiple positioning blocks 215b are provided on the two outermost positioning strips 22b. The positioning grooves 222b are provided on the positioning blocks 215b. The positioning blocks 215b are installed on the positioning strips 22b by bolts 216b. The positioning blocks 215b are provided with laterally extending positioning holes 217b, which can achieve fine-tuning of dimensions by moving the positioning blocks 215b. In this embodiment, the size of the fine-tuning between adjacent positioning blocks 215b is small, so it will not affect the adjustment of the adjustment component 23. Furthermore, two bolts are installed side by side along the extension direction of the hole in the adjustment groove 2311, so that when the two limiting plates 231 are not aligned and there is a positional difference, the two limiting plates 231 will still move outward in a straight line under the push of the adjustment plate 232. Thus, multiple products of different sizes and specifications can be processed in the same batch; the application range is wider.

[0042] In summary, this utility model improves work efficiency and reduces downtime during clamping by incorporating a positioning device 20 capable of loading multiple parts at once. The movable adjustment component 23 provides greater flexibility in positioning the pantograph, allowing for flexible positioning of various product specifications. Furthermore, the same adjustment component 23 can position two pantograph carbon slide plates, making full use of components and space. The dedicated dust extraction device 40 significantly improves the working environment and reduces maintenance costs. In addition, the use of a detection device for targeted identification and reference of the aluminum support plate of the pantograph carbon slide plate can improve repair accuracy to a certain extent. This utility model is highly practical and has significant potential for widespread application.

[0043] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high-precision milling device for pantograph carbon sliding plate, characterized in that: The system includes a frame, a positioning device, a milling device, a dust collection device, and a detection device. The frame includes a base and a mounting bracket. The positioning device is located on the top surface of the base, and the mounting bracket is located outside the positioning device and extends upward. The milling device, part of the dust collection device, and the detection device are all mounted on the mounting bracket. A first guide rail is provided on the top surface of the base. The positioning device includes a movable plate and a positioning component located on the top surface of the movable plate. The movable plate is mounted on the first guide rail and moves back and forth along the first guide rail. The positioning component includes several positioning strips extending from front to back, each positioning strip having several positioning grooves. The positioning grooves on the positioning strip correspond one-to-one; an adjustment component is provided in the middle of the positioning groove, which divides the positioning groove into two sub-positioning grooves. The adjustment component includes two limiting plates and an adjustment plate disposed between the two limiting plates. The limiting plates and the adjustment plate are both installed on the positioning strip by bolts; wherein, each of the two limiting plates is provided with an adjustment groove, and the two sides of the adjustment plate that contact the limiting plates are provided with guide slopes, which extend from top to bottom toward the inner side of the adjustment plate; correspondingly, the surface of the limiting plate that contacts the adjustment plate is also inclined, and its tilting slope is consistent with that of the adjacent side guide slope.

2. The high-precision milling equipment for pantograph carbon sliding plate as described in claim 1, characterized in that: Limiting grooves are also provided on the inner and outer sides of the two outermost positioning strips of the positioning component. The limiting grooves are located on the positioning strips below the two sides of the sub-positioning groove. Two sets of guide posts are provided downward on the bottom surfaces of both ends of the pantograph carbon slide plate. The two sets of guide posts are respectively fitted into the limiting grooves on both sides of the sub-positioning groove.

3. The high-precision milling equipment for pantograph carbon sliding plates as described in claim 1, characterized in that: The bottom of the positioning groove is also embedded with a vacuum suction cup, and the bottom end face of the pantograph carbon slide plate is adsorbed onto the vacuum suction cup.

4. A high-precision milling device for pantograph carbon sliding plate as described in claim 1, characterized in that: The mounting frame includes two uprights and a crossbeam connected to the two uprights. A second guide rail is provided on the crossbeam along its extension direction. The milling device is mounted on the second guide rail and can move along the second guide rail. The milling device includes a mounting base, a milling drive device, a cutting tool, and a protective cover. A third guide rail extending vertically is provided on the outer side of the mounting base. The cutting tool is mounted on the bottom end of the milling drive device, and the milling drive device is mounted on the third guide rail and moves vertically along the third guide rail.

5. A high-precision milling device for pantograph carbon sliding plate as described in claim 4, characterized in that: The protective cover is located on the outside of the tool. The protective cover has a cylindrical structure, with the tool centered inside it and the bottom part extending out of the protective cover.

6. A high-precision milling device for pantograph carbon sliding plate as described in claim 5, characterized in that: The protective cover has a through hole on its side, and the vacuuming device is connected to the through hole through a vacuuming pipe.

7. A high-precision milling device for pantograph carbon sliding plate as described in claim 4, characterized in that: The detection device includes a laser scanner, two cameras, and a displacement sensor, with the two cameras respectively located on both sides of the laser scanner.

8. A high-precision milling device for pantograph carbon sliding plate as described in claim 7, characterized in that: The two cameras are respectively set on the two sides of the mounting base, and the cameras are mounted on the vertically extending slide rails.

9. A high-precision milling device for a pantograph carbon sliding plate as described in claim 8, characterized in that: It also includes an air blowing device, which includes several high-pressure air nozzles, each corresponding to the surface of the cutting tool, the lens of the laser scanner, and the lens settings of the two cameras.

10. A high-precision milling device for a pantograph carbon sliding plate as described in claim 7, characterized in that: The two outermost positioning bars of the positioning device are movably installed, and the positioning bars are driven by a motor or cylinder to move horizontally to move closer to or further away from the adjacent positioning bars.

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