In-situ polishing device for pantograph

Abstract

The invention belongs to the technical field of pantograph polishing devices, and discloses an in-situ polishing device for a pantograph. The in-situ polishing device for the pantograph comprises a frame body, the clamping assembly can be installed on the frame body in a sliding mode in the first direction and is used for clamping the pantograph carbon contact strip to be polished; the polishing assembly can slide in the second direction and can be rotationally installed on the frame body with the straight line where the third direction is located as the axis, and every two of the first direction, the second direction and the third direction are perpendicular to each other; and the follow-up assembly is arranged between the grinding assembly and the frame body. Through the arrangement of the clamping assembly, the to-be-polished pantograph carbon contact strip can be polished without disassembling and assembling the to-be-polished pantograph carbon contact strip, and through the cooperation of the polishing assembly and the follow-up assembly, the polishing assembly can be always in contact with the pantograph carbon contact strip, so that the polishing effect is improved; and meanwhile, the grinding assembly is prevented from being adjusted in the grinding process, and therefore the grinding efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of pantograph polishing devices, specifically relating to an in-situ polishing device for pantographs. Background Technology

[0002] A pantograph carbon contact plate polishing device is a specialized piece of equipment used for the maintenance and upkeep of the carbon contact plates on pantographs in electrified railways. In electrified railway systems, the pantograph (also called a collector pantograph) obtains electrical energy from an external power source by contacting an overhead contact line (usually made of copper or aluminum) to power locomotives or train sets. The carbon contact plate is one of the key components of the pantograph, directly contacting the overhead contact line and playing a crucial role in conducting current. Due to prolonged friction with the overhead contact line, the carbon contact plate gradually wears down, and its surface may become uneven or damaged. This affects the contact quality between the pantograph and the overhead contact line, thus impacting current transmission efficiency and the pantograph's service life.

[0003] Current grinding methods often involve disassembly, transportation, workshop processing, and reinstallation, which results in long operation times, large repetitive positioning errors, and low efficiency in emergency response. Furthermore, traditional handheld grinding tools rely on operator experience to control the grinding amount and pressure, easily leading to insufficient or excessive grinding, affecting the lifespan of the carbon slide plate and the stability of flow reception. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing an in-situ grinding device for pantographs, thereby solving the technical problems of low grinding efficiency and poor grinding effect in existing pantograph grinding devices.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An in-situ grinding device for a pantograph, comprising: Frame; A clamping assembly is slidably mounted on the frame in a first direction, and the clamping assembly is used to clamp the pantograph carbon slide plate to be polished; The grinding component can slide along the second direction and can be rotatably mounted on the frame with the third direction as the axis, and the first direction, the second direction and the third direction are arranged perpendicular to each other. A follower component is disposed between the grinding component and the frame. The follower component is used to drive the grinding component to maintain contact with the pantograph carbon slide plate at all times during operation.

[0006] Furthermore, the number of clamping components is two sets, and the two sets of clamping components are respectively disposed at both ends of the frame. The clamping components include: A support plate, the top of which can be detachably installed at either end of the frame; A connecting rod, one end of which is connected to the upper part of the support plate, and the length direction of the connecting rod is set along the first direction; The pressure plate has a mounting hole on one side that is adapted to the connecting rod. The pressure plate is connected to the end of the connecting rod away from the support plate through the mounting hole and is arranged opposite to the support plate. An adjusting screw is provided at one end of the pressure plate away from the connecting rod, where a first threaded hole is provided, and the adjusting screw is screwed into the first threaded hole.

[0007] Furthermore, it also includes a pressure sensor disposed on the side of the adjusting screw opposite to the support plate, the pressure sensor being used to detect the magnitude of the clamping force of the clamping assembly.

[0008] Furthermore, the polishing assembly includes: The mounting bracket can slide along the second direction and can be rotated on the frame body with the straight line containing the third direction as the axis. The grinding cylinder is rotatably mounted on the mounting bracket.

[0009] Furthermore, it also includes a driving component, the driving component comprising: The guide rod is fixedly connected at both ends to the opposite side walls of the frame, and the axial direction of the guide rod is set along the second direction; The drive screw is rotatably mounted on the opposite two side walls of the frame and is arranged parallel to the guide rod; The first driving component has one end connected to the frame and the other end connected to the driving screw. The first driving component is used to drive the driving screw to rotate. The connecting block has a through hole adapted to the guide rod and a second threaded hole adapted to the drive screw. The guide rod is slidably inserted into the through hole, and the drive screw is screwed into the second threaded hole. The mounting bracket is connected to the connecting block.

[0010] Furthermore, it also includes: A rotating shaft is connected to the connecting block at one end, and the mounting bracket is rotatably mounted on the other end of the rotating shaft. The axis of the rotating shaft is set along the third direction. The outer side wall of the rotating shaft is provided with scale marks. The end of the mounting bracket near the connecting block is provided with an angle scale, and the angle scale is arranged around the mounting bracket along the circumferential direction of the rotating shaft. The second driving component has one end connected to the rotating shaft and the other end connected to the mounting bracket. The second driving component is used to drive the mounting bracket to rotate.

[0011] Furthermore, the number of follower components is two sets, and both sets of follower components are installed between the connecting block and the mounting bracket, and are spaced apart along the first direction. The follower component includes: The mounting plate is connected at its top to the connecting block; A guide column is fixedly installed at one end on the outer side wall of the mounting plate, and the axis of the guide column is set along the third direction; An elastic element is sleeved on the outside of the guide column; The slider has one end fixedly connected to the outer side wall of the mounting bracket, and the top of the slider has a round hole adapted to the guide column, and the guide column is slidably inserted into the round hole. The guide column has a pin at one end, and a plug hole adapted to the pin is provided. The pin is inserted into the plug hole and is located below the slider.

[0012] Furthermore, it also includes a nut, the outer wall of the guide column is provided with external threads, the nut is screwed onto the outside of the guide column, and the two ends of the elastic element abut against the nut and the slider respectively.

[0013] Furthermore, it also includes distance sensors, at least two, both of which are mounted on the mounting plate and are spaced apart along the second direction, and are located on opposite sides of the grinding assembly.

[0014] Furthermore, it also includes a controller, which is disposed on the frame and electrically connected to the clamping assembly, the grinding assembly and the drive assembly.

[0015] The in-situ grinding device for pantographs provided by this invention has the following beneficial effects: 1. By setting up the clamping component, the in-situ grinding device for the pantograph provided by the present invention can be fixed on the carbon plate of the pantograph to be ground. The carbon plate of the pantograph to be ground can be ground without disassembling or assembling it, thereby improving the grinding efficiency. 2. Through the cooperation of the grinding component and the follower component, when the grinding component repeatedly grinds the pantograph carbon slide plate to be ground, it not only ensures that the grinding component can always maintain contact with the pantograph carbon slide plate, thereby improving the grinding effect, but also avoids the need to adjust the grinding component during the grinding process, thereby further improving the grinding efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the in-situ grinding device for a pantograph provided in an embodiment of the present invention; Figure 2A cross-sectional view of an in-situ grinding device for a pantograph provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the clamping assembly provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation structure of the grinding component and the follower component provided in an embodiment of the present invention.

[0017] The attached diagram shows the markings and corresponding component names: 1-Frame, 2-Clamping assembly, 21-Support plate, 22-Connecting rod, 23-Pressure plate, 24-Adjusting screw, 3-Grinding assembly, 31-Mounting bracket, 32-Grinding cylinder, 4-Follow-up assembly, 41-Mounting plate, 42-Guide column, 43-Elastic element, 44-Slider, 45-Pin, 46-Nut, 5-Pressure sensor, 6-Distance sensor, 7-Drive assembly, 71-Guide rod, 72-Drive screw, 73-First drive component, 74-Connecting block, 75-Rotating shaft, 76-Second drive component. Detailed Implementation

[0018] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0019] This embodiment provides an in-situ grinding device for pantographs, addressing the technical problems of low grinding efficiency and poor grinding effect in existing pantograph grinding devices. The in-situ grinding device includes a frame 1, a clamping assembly 2, a grinding assembly 3, and a follow-up assembly 4, wherein: refer to Figure 1 The frame 1 includes a crossbeam and side plates fixedly installed at both ends of the crossbeam. That is, the frame 1 is U-shaped. Optionally, the frame 1 is a structural component composed of an aluminum alloy frame and partial carbon fiber plates to reduce the weight of the in-situ grinding device for pantograph provided in the embodiments of the present invention.

[0020] The clamping component 2 can be slidably mounted on the frame 1 along the first direction. The clamping component 2 is used to clamp the pantograph carbon plate to be polished. In this way, by setting the slidable clamping component 2, the in-situ polishing device for the pantograph provided by the present invention can be fixed on the pantograph carbon plate to be polished without disassembling the pantograph carbon plate to be polished, thereby improving the polishing efficiency. The slidable clamping component 2 makes it easy to clamp the in-situ polishing device for the pantograph provided by the present invention on pantograph carbon plates of different sizes, which has a wider range of applications and stronger practicality.

[0021] The grinding component 3 can slide along the second direction and can be rotatably mounted on the frame 1 with the third direction as the axis. The first direction, the second direction and the third direction are arranged perpendicular to each other, with the third direction being the vertical direction. In this way, the movable grinding component 3 facilitates repeated grinding of the pantograph carbon slide plate to be ground. At the same time, the rotatable grinding component 3 facilitates the adjustment of the angle of the grinding component 3 to adapt to the outline of the pantograph carbon slide plate to be ground.

[0022] The follower component 4 is positioned between the grinding component 3 and the frame 1. The follower component 4 is used to drive the grinding component 3 to maintain contact with the pantograph carbon plate during operation. Through the cooperation between the grinding component 3 and the follower component 4, when the grinding component 3 repeatedly grinds the pantograph carbon plate to be ground, it not only ensures that the grinding component 3 can always maintain contact with the pantograph carbon plate, thereby improving the grinding effect, but also avoids the need to adjust the grinding component 3 during the grinding process, thereby further improving the grinding efficiency.

[0023] There are two sets of clamping components 2, which are respectively set at both ends of the frame 1. In this way, by setting two sets of clamping components 2, it is easier to clamp the in-situ grinding device of the pantograph provided by the present invention more firmly on the pantograph carbon slide plate to be ground.

[0024] refer to Figure 3 The clamping assembly 2 includes a support plate 21, a connecting rod 22, a pressure plate 23, and an adjusting screw 24, wherein: The top of the support plate 21 can be detachably installed at either end of the frame 1, that is, the top of the support plate 21 can be detachably installed on either side plate, and the two support plates 21 in the two sets of clamping assemblies 2 are respectively installed on the two side plates.

[0025] One end of the connecting rod 22 is connected to the upper part of the support plate 21, and the length direction of the connecting rod 22 is set along the first direction.

[0026] The pressure plate 23 has a mounting hole on one side that is compatible with the connecting rod 22. The pressure plate 23 is connected to the end of the connecting rod 22 away from the support plate 21 through the mounting hole and is set opposite to the support plate 21. In this way, the pressure plate 23 and the support plate 21 are spaced apart by the setting of the connecting rod 22, leaving room for clamping the pantograph carbon slide plate to be polished.

[0027] The end of the pressure plate 23 away from the connecting rod 22 has a first threaded hole, and the axis of the first threaded hole is set along a first direction. The adjusting screw 24 is screwed into the first threaded hole. In this way, by rotating the adjusting screw 24, the horizontal distance between the adjusting screw 24 and the support plate 21 can be adjusted, thereby achieving the purpose of adapting to different sizes of pantograph carbon slide plates to be ground. When the pantograph carbon slide plate to be ground needs to be ground, first rotate the adjusting screw 24 in the reverse direction to increase the distance between the adjusting screw 24 and the support plate 21 until the horizontal distance between the adjusting screw 24 and the support plate 21 is greater than the width of the pantograph carbon slide plate to be ground. Then, the pantograph carbon slide plate to be ground is placed between the adjusting screw 24 and the support plate 21. Finally, rotate the adjusting screw 24 in the forward direction to gradually decrease the horizontal distance between the adjusting screw 24 and the support plate 21 until the adjusting screw 24 and the support plate 21 clamp the pantograph carbon slide plate to be ground.

[0028] Optionally, a pressure sensor 5 is also included, which is disposed on the side opposite to the support plate 21 of the adjusting screw 24. The pressure sensor 5 is used to detect the magnitude of the clamping force of the clamping assembly 2, so as to avoid the clamping force of the adjusting screw 24 being too large and damaging the pantograph carbon slide plate to be polished, and at the same time to avoid the clamping force of the adjusting screw 24 being too small and failing to firmly clamp the pantograph in-situ polishing device provided by the present invention onto the pantograph carbon slide plate to be polished.

[0029] Optionally, an anti-slip pad is also included, which is disposed on one side of the support plate 21 relative to the adjusting screw 24. In this way, the anti-slip pad allows the clamping assembly 2 to be clamped more securely on the pantograph carbon slide plate to be polished.

[0030] refer to Figure 4 The grinding assembly 3 includes a mounting bracket and a grinding cylinder 32, wherein: The mounting bracket 31 can slide along the second direction and can be rotated on the frame 1 with the straight line of the third direction as the axis. Optionally, the mounting bracket 31 includes two mounting side plates and one connecting side plate. The two mounting side plates are respectively installed on opposite sides of the connecting side plate, thereby forming a mounting cavity.

[0031] The grinding cylinder 32 is rotatably mounted on the mounting bracket 31. That is, the two ends of the grinding cylinder 32 are rotatably mounted on the two mounting side plates and located in the mounting cavity. It also includes a motor, which is also mounted between the two mounting side plates. The motor is connected to the grinding cylinder 32 through a pulley.

[0032] refer to Figure 2 and Figure 4 It also includes a drive assembly 7, which includes a guide rod 71, a drive screw 72, a first drive member 73, and a connecting block 74, wherein: The two ends of the guide rod 71 are fixedly connected to the opposite side walls of the frame 1, that is, the two ends of the guide rod 71 are fixedly installed on the side plates, and the axial direction of the guide rod 71 is set along the second direction.

[0033] The drive screw 72 is rotatably mounted on the opposite side walls of the frame 1 and is arranged parallel to the guide rod 71.

[0034] One end of the first driving component 73 is connected to the frame 1, and the other end is connected to the driving screw 72. The first driving component 73 is used to drive the driving screw 72 to rotate. The setting of the first driving component 73 facilitates the rotation of the driving screw 72.

[0035] One side of the connecting block 74 has a through hole adapted to the guide rod 71 and a second threaded hole adapted to the drive screw 72. The guide rod 71 is slidably inserted into the through hole, and the drive screw 72 is screwed into the second threaded hole. The mounting bracket 31 is connected to the connecting block 74. With the above structure, when the drive screw 72 rotates, the connecting block 74 moves linearly back and forth on the drive screw 72. However, the guide rod 71 prevents the connecting block 74 from rotating with the screw.

[0036] Optionally, a linear bearing is provided between the through hole and the guide rod 71 to reduce the friction between the guide rod 71 and the connecting block 74, thereby enabling the connecting block 74 to move more smoothly on the guide rod 71.

[0037] It also includes a rotating shaft 75 and a second drive unit 76, wherein: One end of the rotating shaft 75 is connected to the connecting block 74, and the mounting bracket 31 is rotatably mounted on the other end of the rotating shaft 75. The axis of the rotating shaft 75 is set along the third direction. The outer wall of the rotating shaft 75 is provided with scale marks. The end of the mounting bracket 31 near the connecting block 74 is provided with an angle scale, and the angle scale is arranged around the mounting bracket 31 along the circumferential direction of the rotating shaft 75. In this way, the angle of the grinding device can be easily adjusted by the setting of the rotating shaft 75, and the repeated positioning of the grinding device can be easily achieved by the setting of the scale marks and the angle scale.

[0038] One end of the second driving component 76 is connected to the rotating shaft 75, and the other end is connected to the mounting bracket 31. The second driving component 76 is used to drive the mounting bracket 31 to rotate. Thus, the second driving component 76 facilitates the rotation of the mounting bracket 31.

[0039] refer to Figure 4 There are two sets of follower components 4, and both sets of follower components 4 are installed between the connecting block 74 and the mounting bracket 31, and are spaced apart along the first direction. By setting two sets of follower components 4, the grinding component 3 can be more firmly connected to the connecting block 74, and the grinding component 3 can be subjected to more uniform force.

[0040] The follower assembly 4 includes a mounting plate 41, a guide post 42, an elastic element 43, a slider 44, and a pin 45, wherein: The top end of the mounting plate 41 is connected to the connecting block 74. Specifically, it also includes a plate body, which is connected to the other end of the second driving member 76. The top end of the mounting plate 41 is fixedly connected to the plate body.

[0041] The guide column 42 is fixedly installed at one end on the outer side wall of the mounting plate 41, and the axis of the guide column 42 is set along the third direction. Optionally, it also includes a block installed on the outer side wall of the mounting plate 41, and one end of the guide column 42 is installed at the bottom end of the block.

[0042] The elastic element 43 is sleeved outside the guide column 42. Optionally, the elastic element 43 is a compression spring.

[0043] One end of the slider 44 is fixedly connected to the outer wall of the mounting frame 31. The top of the slider 44 has a round hole that matches the guide column 42. The guide column 42 is slidably inserted into the round hole. In this way, by setting the slider 44, the mounting frame 31 and the grinding cylinder 32 on the mounting frame 31 can make linear reciprocating motion along the axis of the guide column 42.

[0044] The other end of the guide column 42 is provided with a plug hole that matches the pin 45. The pin 45 is inserted into the plug hole and is located below the slider 44. The pin 45 is provided to prevent the slider 44 from falling out of the guide column 42.

[0045] With the above structure, after the clamping assembly 2 is clamped onto the pantograph carbon slide plate to be polished, the polishing cylinder 32 abuts against the pantograph carbon slide plate to be polished. At this time, the elastic element 43 is compressed, and the reaction force of the elastic element 43 causes the polishing cylinder 32 to be pressed tightly against the pantograph carbon slide plate to be polished, so that the polishing cylinder 32 can polish the pantograph carbon slide plate to be polished. During the polishing process, when the local height of the surface of the pantograph carbon slide plate changes, under the reaction force of the elastic element 43, the slider 44 is driven to slide on the guide column 42 towards the pantograph carbon slide plate, thereby pressing the polishing cylinder 32 against the pantograph carbon slide plate again, so that the polishing cylinder 32 always remains in contact with the pantograph carbon slide plate throughout the polishing process.

[0046] It also includes a nut 46. The outer wall of the guide column 42 is provided with external threads. The nut 46 is screwed onto the outside of the guide column 42, and the two ends of the elastic element 43 abut against the nut 46 and the slider 44 respectively. In this way, by setting the nut 46, rotating the nut 46 can adjust the compression of the elastic element 43, thereby facilitating the adjustment of the initial pressure of the grinding cylinder 32 on the pantograph carbon slide plate to be ground.

[0047] It also includes distance sensors 6, at least two of them. Both distance sensors 6 are mounted on the mounting plate 41 and are spaced apart along the second direction. The two distance sensors 6 are located on both sides of the grinding assembly 3. In this way, the arrangement of the distance sensors 6 makes it easy to intermittently or continuously measure the height change of the grinding area during reciprocating movement.

[0048] It also includes a controller, which is set on the frame 1 and electrically connected to the clamping component 2, the grinding component 3 and the drive component 7. In this way, the controller can be set to remotely control the start and stop of each component and set various values.

[0049] Although specific embodiments of the invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by a person skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. An in-situ grinding device for a pantograph, characterized in that, include: Frame (1); The clamping assembly (2) is slidably mounted on the frame (1) along a first direction. The clamping assembly (2) is used to clamp the pantograph carbon slide plate to be polished. The grinding component (3) can slide along the second direction and can be rotatably mounted on the frame (1) with the straight line where the third direction is located as the axis, and the first direction, the second direction and the third direction are arranged perpendicular to each other; A follower component (4) is disposed between the polishing component (3) and the frame (1). The follower component (4) is used to drive the polishing component (3) to always maintain contact with the pantograph carbon slide plate during operation.

2. The in-situ grinding device for pantographs according to claim 1, characterized in that, The number of clamping components (2) is two sets, and the two sets of clamping components (2) are respectively disposed at both ends of the frame (1). The clamping components (2) include: The support plate (21) is detachably mounted at either end of the frame (1); A connecting rod (22) is connected at one end to the upper part of the support plate (21), and the length direction of the connecting rod (22) is arranged along the first direction; The pressure plate (23) has a mounting hole on one side that is adapted to the connecting rod (22). The pressure plate (23) is connected to the end of the connecting rod (22) away from the support plate (21) through the mounting hole and is arranged opposite to the support plate (21). The adjusting screw (24) has a first threaded hole at one end of the pressure plate (23) away from the connecting rod (22), and the adjusting screw (24) is screwed into the first threaded hole.

3. The in-situ grinding device for pantographs according to claim 2, characterized in that, It also includes a pressure sensor (5) disposed on the side of the adjusting screw (24) opposite to the support plate (21), the pressure sensor (5) being used to detect the magnitude of the clamping force of the clamping assembly (2).

4. The in-situ grinding device for pantographs according to claim 1, characterized in that, The polishing component (3) includes: The mounting bracket (31) can slide along the second direction and can be rotated on the frame (1) with the straight line where the third direction is located as the axis; The grinding cylinder (32) is rotatably mounted on the mounting bracket (31).

5. The in-situ grinding device for pantographs according to claim 4, characterized in that, It also includes a driving component (7), which includes: The guide rod (71) is fixedly connected at both ends to the opposite side walls of the frame (1), and the axial direction of the guide rod (71) is set along the second direction; The drive screw (72) is rotatably mounted on the opposite side walls of the frame (1) and is arranged parallel to the guide rod (71); The first driving member (73) is connected at one end to the frame (1) and at the other end to the driving screw (72). The first driving member (73) is used to drive the driving screw (72) to rotate. The connecting block (74) has a through hole adapted to the guide rod (71) and a second threaded hole adapted to the drive screw (72). The guide rod (71) is slidably inserted into the through hole, and the drive screw (72) is screwed into the second threaded hole. The mounting bracket (31) is connected to the connecting block (74).

6. The in-situ grinding device for pantographs according to claim 5, characterized in that, Also includes: A rotating shaft (75) is connected at one end to the connecting block (74). The mounting bracket (31) is rotatably mounted on the other end of the rotating shaft (75). The axis of the rotating shaft (75) is set along the third direction. The outer side wall of the rotating shaft (75) is provided with scale marks. The end of the mounting bracket (31) near the connecting block (74) is provided with an angle scale. The angle scale is arranged around the mounting bracket (31) along the circumferential direction of the rotating shaft (75). The second driving member (76) is connected at one end to the rotating shaft (75) and at the other end to the mounting bracket (31). The second driving member (76) is used to drive the mounting bracket (31) to rotate.

7. The in-situ grinding device for pantographs according to claim 6, characterized in that, The number of the follower components (4) is two sets, and both sets of the follower components (4) are installed between the connecting block (74) and the mounting bracket (31), and are spaced apart along the first direction. The follower components (4) include: Mounting plate (41), with its top end connected to the connecting block (74); The guide column (42) is fixedly installed at one end on the outer side wall of the mounting plate (41), and the axis of the guide column (42) is set along the third direction; An elastic element (43) is sleeved on the outside of the guide post (42); The slider (44) is fixedly connected at one end to the outer side wall of the mounting bracket (31). The top end of the slider (44) is provided with a round hole that is adapted to the guide column (42). The guide column (42) is slidably inserted into the round hole. The other end of the guide post (42) is provided with a plug hole that is adapted to the plug (45). The plug (45) is inserted into the plug hole and is located below the slider (44).

8. The in-situ grinding device for pantographs according to claim 7, characterized in that, It also includes a nut (46), the outer wall of the guide column (42) is provided with external threads, the nut (46) is screwed onto the outside of the guide column (42), and the two ends of the elastic member (43) abut against the nut (46) and the slider (44) respectively.

9. The in-situ grinding device for pantographs according to claim 8, characterized in that, It also includes distance sensors (6), at least two, both of which are mounted on the mounting plate (41) and are spaced apart along the second direction, and are located on both sides of the polishing assembly (3).

10. The in-situ grinding device for pantographs according to claim 9, characterized in that, It also includes a controller, which is mounted on the frame (1) and electrically connected to the clamping assembly (2), the grinding assembly (3) and the drive assembly (7).

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