Turnout grinding equipment and technology

Abstract

The invention discloses turnout grinding equipment and technology, and relates to the technical field of turnout grinding, the grinding equipment comprises a walking trolley moving on rails on the two sides, and grinding mechanisms used for grinding the rails are symmetrically distributed on the two sides of the walking trolley respectively; the grinding mechanism comprises a grinding abrasive belt and further comprises a set of driving wheels and two sets of driven wheels, the driving wheels and the driven wheels are arranged in a triangular mode, the grinding abrasive belt is arranged on the driving wheels and the driven wheels in a sleeving mode, and the portion, between the two sets of driven wheels, of the grinding abrasive belt is of a horizontal structure. In the process of polishing the upper surface of the rail head, the driven wheels on the two sides can be adjusted to move downwards through the adjusting mechanism, so that the driven wheels on the two sides synchronously drive the horizontal polishing abrasive belt to make contact with the upper surface of the rail head, and then the driven wheels on the two sides are driven to move downwards again by a certain distance; the horizontal polishing abrasive belt can be pressed to be bent and completely attached to the upper surface of the rail head.

Description

Technical Field

[0001] The present invention relates to the technical field of turnout grinding, and in particular to a turnout grinding device and process. Background Art

[0002] With the increasing use of high-speed and heavy-load trains, the requirements for rail quality are constantly increasing, and rail repair faces new challenges. Due to the extremely high cost and time limitations of large grinding vehicles, and their low operating efficiency in complex turnout railway sections, small and medium-sized railway maintenance equipment are often used in daily railway maintenance work. These equipment are flexible and low-cost. Among them, grinding machines used for rail turnout repair have been widely used in various railway maintenance work areas and have become an indispensable main equipment in maintenance operations.

[0003] In the prior art, when grinding the rail, a grinding wheel is usually installed on a rail trolley. As the rail trolley moves, the surface of the rail head of the rail can be ground by the grinding wheel. However, in actual application, the upper surface of the rail head is not a horizontal structure and usually has a certain curvature. Therefore, when using the grinding wheel for grinding, there will be a certain grinding dead angle on the upper surface of the rail head, and the effect of sufficient grinding cannot be achieved. Summary of the Invention

[0004] The present invention provides a turnout grinding device and process, which can solve the following problems existing in the prior art: Currently, the upper surface of the rail head of the rail is usually set to an arc structure, so that when a grinding wheel is used for grinding, there is a grinding dead angle.

[0005] A turnout grinding device comprises a trolley moving on two rails, wherein grinding mechanisms for grinding the rails are symmetrically arranged on both sides of the trolley; The grinding mechanism includes a grinding belt, a set of driving wheels and two sets of driven wheels, wherein the driving wheels and the driven wheels are arranged in a triangular shape, and the grinding belt is sleeved on the driving wheels and the driven wheels, and the grinding belt between the two sets of driven wheels is a horizontal structure; Wherein, the driving wheel is connected to a servo device that drives the driving wheel to rotate; The grinding device further comprises an adjusting mechanism, which is used to adjust the horizontal heights of the two sets of driven wheels.

[0006] Preferably, the walking trolley includes a frame, and drive shafts are rotatably arranged on the front and rear sides of the bottom of the frame. The drive shafts are respectively provided with wheels for rolling connection with the track, and the wheels are fixed to the drive shafts by nuts.

[0007] Preferably, the frame is provided with a positioning plate, the first screw is arranged on one side of the positioning plate, and the end of the first screw is fixed with the output end of the first motor. The first screw is symmetrically sleeved with the first nut, and the two first nuts are fixed with the adjusting plates.

[0008] Preferably, the frame is further provided with a second screw, and the second screw is symmetrically sleeved with the second nut fixed with the positioning plate.

[0009] Preferably, the frame is further provided with a guide rod, and the guide plate fixed with the positioning plate is sleeved with the guide rod.

[0010] Preferably, the two adjusting plates are respectively provided with a limiting seat at the bottom, the servo device includes a second motor fixed on one side of the limiting seat, and the driving wheel is rotatably arranged on the other side of the limiting seat, and the output end of the second motor is fixed with the driving wheel through the limiting seat.

[0011] Preferably, the two driven wheels are rotatably arranged at the ends of the swing arms, respectively, and the limiting plate is fixed at the bottom of the limiting seat, and the two swing arms are rotatably connected with the limiting plate through the shafts.

[0012] Preferably, the adjusting mechanism includes a rotating part, the rotating part is used for driving the two shafts to synchronously rotate, and the directions of rotation of the two shafts are opposite.

[0013] Preferably, the rotating part includes a gear fixed at the end of the shaft; The limiting plate is provided with a lifting cylinder on one side, and the U-shaped frame is fixed on the driving end of the lifting cylinder, and the two sides of the U-shaped frame are symmetrically provided with the racks engaged with the two gears, respectively.

[0014] A process for polishing a turnout, applied to the above-mentioned polishing device for a turnout, comprising the following steps: The polishing mechanism is arranged on the walking trolley, and the two polishing mechanisms are synchronously driven to move along with the movement of the walking trolley; In the initial state, the polishing belt between the two driven wheels is in a horizontal state and does not contact the upper surface of the rail head; When polishing is needed, the adjusting mechanism adjusts the two driven wheels to move downward, so that the two driven wheels synchronously drive the horizontal polishing belt to contact the upper surface of the rail head, and then drive the two driven wheels to move downward by a certain distance, so as to bend the horizontal polishing belt and completely adhere to the upper surface of the rail head; The main driving wheel is driven to rotate by the servo device, and the polishing belt is driven to rotate in the process of rotation of the main driving wheel, so as to polish the upper surface of the rail head.

[0015] After polishing is completed, the two driven wheels are driven to rise by the adjusting mechanism, the polishing belt between the two driven wheels is separated from the track; The polishing device is driven to move forward by a walking trolley by a distance of a polishing belt width, and the above operation is repeated.

[0016] The present application provides a kind of switch polishing equipment and process, including the following beneficial effects: 1) In the present application, since the upper surface of the rail head of the track is a non-horizontal structure, when the horizontal polishing belt between the two driven wheels is used to polish it, there will still be a polishing dead angle phenomenon, based on this, in the process of polishing the upper surface of the rail head, in the initial state, the polishing belt between the two driven wheels is horizontal, and is not in contact with the upper surface of the rail head, when polishing is needed, the two driven wheels can be adjusted downward by the adjusting mechanism, so that the two driven wheels synchronously drive the horizontal polishing belt to contact the upper surface of the rail head, and then drive the two driven wheels to move downward by a certain distance, the horizontal polishing belt can be pressed and bent during movement, and completely adhere to the upper surface of the rail head, at this time, the driven wheel is driven to rotate by the servo device, and the polishing belt is driven to rotate during rotation, to polish the upper surface of the rail head; 2) In the present application, when the upper surface of the rail head in contact with the polishing belt is polished, the two driven wheels can be driven upward again by the adjusting mechanism, to separate the polishing belt between the two driven wheels from the track, at this time, the polishing device can be driven forward by a walking trolley by a distance of a polishing belt width, and the above operation is repeated to polish the upper surface of the rail head, and the track is polished completely without a polishing dead angle phenomenon; 3) In the present application, when the two side shafts are driven to rotate, the U-shaped frame can be driven to rise and fall by the lifting cylinder, the shaft is driven to rotate by the engagement of the rack and pinion during lifting, to synchronously drive the swing arm to rotate, to ensure that the two swing arms swing synchronously and the swing angle is consistent, the total length of the polishing belt is L1, when the adjusting mechanism drives the two driven wheels to move downward, the total length of the polishing belt is L1, after calculation, L2 is less than L1, therefore, in the case that the total length of the polishing belt L1 is unchanged, as the adjusting mechanism adjusts the two driven wheels to move downward, the tension of the polishing belt will gradually decrease, to make the polishing belt between the two driven wheels deform more easily and completely adhere to the upper surface of the rail head, the polishing belt will be straightened again during deformation, to further improve the polishing effect on the rail head; Correspondingly, if the grinding belt is always in a taut state and moves towards the rail head direction, it is difficult to deform, so that the grinding belt cannot completely match the upper surface of the rail head, and the grinding belt is prone to breakage, and the stability is poor, and the up and down swinging of the swing arm driven driven wheel can effectively avoid the phenomenon, and the stability is higher; 4) When adjusting the positions of the two sides of the polishing equipment, the first motor can drive the first screw to rotate, and the two sides of the first nut can move on the first screw, and the adjusting plate can synchronously drive the two groups of polishing equipment to approach or move away from each other, so that the positions of the polishing equipment and the track are adjusted correspondingly, so as to improve the polishing accuracy of the track; when adjusting the initial height of the two sides of the polishing equipment, the handle rotates the second screw, and the second nut moves on the second screw, and the positioning plate is synchronously driven to ascend and descend, and the height of the two sides of the polishing equipment is adjusted by the ascending and descending of the positioning plate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 2 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 3 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 4 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 1 ; Figure 5 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 2 ; Figure 6 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 7 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 8 A structure schematic view of the turnout polishing equipment is provided for the present application. Figure 9 A structure schematic view of the turnout polishing equipment is provided for the present application.

[0018] BRIEF DESCRIPTION OF DRAWINGS 1. Track; 2. Frame; 3. Positioning plate; 4. Grinding mechanism; 5. Lifting cylinder; 201. Controller; 202. Wheel; 203. Guide rod; 204. Guide plate; 205. Drive shaft; 301. Second nut; 302. Second screw; 303. First motor; 304. Adjustment plate; 305. First nut; 306. Limit plate; 307. First screw; 308. Limit seat; 401. Grinding belt; 402. Second motor; 403. Driving wheel; 501. U-shaped frame; 502. Rack; 503. Gear; 504. Swing arm; 505. Driven wheel. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0020] Example 1

[0021] like Figures 1 to 3 As shown, an embodiment of the present invention provides a switch grinding device, which includes a traveling trolley that moves on rails 1 on both sides, and grinding mechanisms 4 for grinding the rails 1 are symmetrically arranged on both sides of the traveling trolley; specifically, this embodiment arranges the grinding mechanism 4 on the traveling trolley, and as the traveling trolley moves, the grinding mechanisms 4 on both sides can be driven to move synchronously, so that the effect of automatically grinding the rails 1 can be achieved during the walking process, and there is no need to manually adjust the position of the grinding mechanism 4.

[0022] In this example, see Figures 6-8 The grinding mechanism 4 includes a grinding belt 401, a set of driving wheels 403 and two sets of driven wheels 505. The driving wheels 403 and the two sets of driven wheels 505 are arranged in a triangular shape, and the grinding belt 401 is sleeved on the driving wheels 403 and the driven wheels 505. The grinding belt 401 between the two sets of driven wheels 505 is a horizontal structure. The driving wheel 403 is connected to a servo device that drives it to rotate. It can be explained that in this embodiment, when the rail 1 is being polished, the servo device first drives the driving wheel 403 to rotate. During the rotation of the driving wheel 403, the grinding belt 401 can be synchronously driven to be uploaded to the driven wheels 505 on both sides, and then the rail 1 can be polished by the horizontal grinding belt 401. As a further scheme of the embodiment, the grinding device further comprises an adjusting mechanism for adjusting the horizontal height of the two sets of driven wheels 505; it can be explained that, since the upper surface of the rail head of the track 1 is a non-horizontal structure, when the horizontal grinding belt 401 between the two sets of driven wheels 505 is used to grind it, there will still be a grinding dead angle phenomenon, based on this, in the process of grinding the upper surface of the rail head, in the initial state, the grinding belt 401 between the two sets of driven wheels 505 is horizontal and does not contact the upper surface of the rail head, when grinding is needed, the adjusting mechanism can be used to adjust the downward movement of the two driven wheels 505, so that the two driven wheels 505 synchronously drive the horizontal grinding belt 401 to contact the upper surface of the rail head, and then drive the two driven wheels 505 to move downward again by a certain distance, in the process of movement, the two driven wheels 505 can press the horizontal grinding belt 401 to bend and completely adhere to the upper surface of the rail head (for reference Figure 7 ), at this time, the servo device drives the driving wheel 403 to rotate, which can drive the grinding belt 401 to rotate in the process of rotation, so as to grind the upper surface of the rail head.

[0023] Correspondingly, after the upper surface of the rail head in contact with the grinding belt 401 is ground, the adjusting mechanism can be used to drive the two driven wheels 505 to rise again, so as to drive the grinding belt 401 between the two driven wheels 505 to separate from the track, at this time, the walking trolley can be used to drive the grinding device to move forward by a distance of the width of the grinding belt 401, and the above operation is repeated again to grind the upper surface of the rail head, so that the upper surface of the rail head of the track 1 can be ground comprehensively without the phenomenon of grinding dead angle.

[0024] Embodiment 2

[0025] Based on embodiment 1, please refer to Figure 3 , the walking trolley of the embodiment comprises a frame 2, driving shafts 205 are arranged on the front and rear sides of the bottom of the frame 2 to rotate, the driving shafts 205 are respectively sleeved with wheels 202 for rolling connection with the track 1, and the wheels 202 are locked and fixed on the driving shafts 205 by nuts; specifically, the bottom of the frame 2 of the embodiment is also provided with a walking motor for driving the wheels 202 to rotate, and the walking motor is electrically connected with a controller 201 fixedly arranged on the frame 2, so as to drive the walking trolley to walk on the track 1 by electric driving; Correspondingly, the wheels 202 of the embodiment are fixed on the driving shafts 205 by sleeving, so the width of the wheels 202 on both sides can be set based on the width of the track 1 on both sides, so as to ensure that the wheels 202 on both sides can walk stably on the track 1.

[0026] It should be noted that when the width of the two side rails 1 is different, in order to adjust the position of the two side polishing devices to adapt to the position of the rail 1, please refer to Figures 6-7 The positioning plate 3 is provided on the frame 2, and a first screw rod 307 is arranged on the side of the positioning plate 3 facing the frame 2. The end of the first screw rod 307 is fixed to the output end of a first motor 303. The threads on the two sides of the first screw rod 307 are opposite in direction. A first nut 305 is symmetrically sleeved on the first screw rod 307. The two first nuts 305 are fixed to the adjusting plate 304, respectively. The two sets of polishing devices are arranged on the corresponding adjusting plate 304. It should be noted that when adjusting the position of the two polishing devices, the first motor 303 can drive the first screw rod 307 to rotate. During the movement of the two first nuts 305 on the first screw rod 307, the adjusting plate 304 can synchronously drive the two sets of polishing devices to move towards each other or move away from each other. The position of each polishing device is adjusted to correspond to the position of the rail 1, so as to improve the polishing accuracy of the rail 1.

[0027] In addition, in order to ensure the stability of the movement of the two first nuts 305 on the first screw rod 307, a rail groove can be formed on the frame 2 to guide and limit the first nut 305.

[0028] As a further scheme of the embodiment, please refer to Figures 1-2 In order to adjust the initial relative distance between the two polishing devices and the rail 1, in the embodiment, a second screw rod 302 is also arranged on the frame 2. A second nut 301 is sleeved on the second screw rod 302 and fixed to the positioning plate 3. Specifically, a handle can be fixed on the second screw rod 302. When adjusting the initial height of the two polishing devices, the handle can be used to rotate the second screw rod 302. During the movement of the second nut 301 on the second screw rod 302, the positioning plate 3 can be synchronously driven to ascend and descend. The height of the two polishing devices can be adjusted by the ascending and descending of the positioning plate 3.

[0029] In the embodiment, in order to improve the stability of the ascending and descending of the positioning plate 3, a guide rod 203 is also fixed on the frame 2. A guide plate 204 is sleeved on the guide rod 203 and fixed to the positioning plate 3. Specifically, by arranging the guide rod 203 and the guide plate 204, the movement of the positioning plate 3 can be guided to ensure the stable ascending and descending of the positioning plate 3 along the vertical direction.

[0030] Specifically, as one of the modes that can be implemented in the embodiment, please refer to Figures 6-8The bottom of the two sides of the adjusting plate 304 is respectively fixed with a limiting seat 308, the servo device includes a second motor 402 fixed on one side of the limiting seat 308, and a driving wheel 403 is arranged on the other side of the limiting seat 308 and rotates, and the output end of the second motor 402 is fixed with the driving wheel 403 through the limiting seat 308. It can be explained that, in the process of polishing the track 1, the second motor 402 can be started to drive the driving wheel 403 to rotate, and the driving wheel 403 can be driven to rotate synchronously in the process of rotating.

[0031] In the embodiment, the two sides of the driven wheel 505 are respectively arranged at the end of the swing arm 504, the bottom of the limiting seat 308 is fixed with a limiting plate 306, and the two sides of the swing arm 504 are respectively connected with the limiting plate 306 through a shaft. The adjusting mechanism includes a rotating part, the rotating part is used for driving the two sides of the shaft to rotate synchronously, and the directions of the two sides of the shaft are opposite. It can be explained that, in the embodiment, when the height of the two sides of the driven wheel 505 needs to be adjusted, the two sides of the shaft can be driven to rotate synchronously through the rotating part, and the driven wheel 505 can be driven to rise or fall through the swing arm 504 in the process of rotating, so that the height of the polishing sand belt 401 between the two groups of driven wheels 505 can be adjusted. Further, the rotating part includes a gear 503 fixed on the end of the shaft, one side of the limiting plate 306 is fixed with a lifting cylinder 5, the driving end of the lifting cylinder 5 is fixed with a U-shaped frame 501, and the two sides of the U-shaped frame 501 are symmetrically fixed with a rack 502 meshing with the two sides of the gear 503. It can be explained that, in the embodiment, when the two sides of the shaft are driven to rotate, the U-shaped frame 501 can be driven to rise and fall through the lifting cylinder 5, the shaft can be driven to rotate through the meshing of the rack 502 and the gear 503 in the process of rising and falling of the U-shaped frame 501, so that the swing arm 504 is synchronously driven to rotate, and the two sides of the swing arm 504 are synchronously swung and the swing angles are consistent.

[0032] It also needs to be explained that, the adjusting mechanism can be used for adjusting the height of the polishing sand belt 401 between the two groups of driven wheels 505. Figure 9 , Figure 9 In order to adjust the change of the polishing sand belt 401 in the process that the two groups of driven wheels 505 are driven to move downward by the adjusting mechanism, the total length of the polishing sand belt 401 is L1, and the total length of the polishing sand belt 401 is L2 when the two groups of driven wheels 505 are driven to move downward by the adjusting mechanism. After calculation, L2 is less than L1. Therefore, in the case that the total length L1 of the polishing sand belt 401 is unchanged, the tightness of the polishing sand belt 401 will gradually decrease with the adjustment of the two groups of driven wheels 505 to move downward by the adjusting mechanism, so that the polishing sand belt 401 between the two groups of driven wheels 505 is more likely to deform and completely adhere to the upper surface of the rail head of the track 1, and the polishing sand belt 401 will be straightened again in the process of deformation, so as to improve the polishing effect on the rail head. Correspondingly, if the grinding belt 401 is always in a taut state and moves towards the rail head direction, it is difficult to deform, so that the grinding belt 401 cannot completely match the upper surface of the rail head, and the grinding belt 401 is prone to breakage, and the stability is poor, and the swing arm 504 provided in the application drives the driven wheel 505 to swing up and down, which can effectively avoid the phenomenon, and the stability is higher.

[0033] A process for grinding a turnout, comprising the following steps: Please refer to Figures 1-4 S1, the grinding mechanism 4 is arranged on the walking trolley, and the walking trolley moves, and the two sides of the grinding mechanism 4 are driven synchronously; S2, in the initial state, the grinding belt 401 between the two groups of driven wheels 505 is in a horizontal state, and does not contact the upper surface of the rail head; S3, when grinding is needed, the adjusting mechanism adjusts the two sides of the driven wheel 505 to move downward, so that the two sides of the driven wheel 505 synchronously drive the horizontal grinding belt 401 to contact the upper surface of the rail head, and then drive the two sides of the driven wheel 505 to move downward again by a certain distance, so as to bend the horizontal grinding belt 401 and completely match the upper surface of the rail head; S4, the servo device drives the driving wheel 403 to rotate, and the driving wheel 403 can drive the grinding belt 401 to rotate in the process of rotating, and the upper surface of the rail head is ground.

[0034] S5, after grinding, the adjusting mechanism drives the two sides of the driven wheel 505 to rise, and drives the grinding belt 401 between the two sides of the driven wheel 505 to separate from the track; S6, the walking trolley drives the grinding device to move forward by a distance of the width of the grinding belt 401, and the above operation is repeated again, and so on.

[0035] The above disclosure is only a few specific embodiments of the application, but the embodiments of the application are not limited to this, any changes that can be thought of by those skilled in the art should fall within the protection scope of the application.

Claims

1. A turnout grinding device, comprising a traveling trolley moving on two side rails (1), characterized in that: Grinding mechanisms (4) for grinding the rail (1) are symmetrically arranged on both sides of the traveling trolley; The grinding mechanism (4) includes a grinding belt (401), a set of driving wheels (403) and two sets of driven wheels (505), wherein the set of driving wheels (403) and the two sets of driven wheels (505) are arranged in a triangular shape, and the grinding belt (401) is sleeved on the driving wheels (403) and the driven wheels (505), and the grinding belt (401) between the two sets of driven wheels (505) is a horizontal structure; Wherein, the driving wheel (403) is connected to a servo device that drives the driving wheel to rotate; The grinding device further comprises an adjusting mechanism, which is used to adjust the horizontal heights of the two sets of driven wheels (505).

2. A turnout grinding device according to claim 1, characterized in that: The walking trolley comprises a frame (2), wherein drive shafts (205) are rotatably arranged on the front and rear sides of the bottom of the frame (2), and wheels (202) for rolling connection with the track (1) are respectively sleeved on the drive shafts (205), and the wheels (202) are fixed to the drive shafts (205) by nuts.

3. A turnout grinding device according to claim 2, characterized in that: The vehicle frame (2) is provided with a positioning plate (3), the positioning plate (3) is rotated toward one side of the vehicle frame (2) to arrange a first screw rod (307), and the end of the first screw rod (307) is fixed to the output end of the first motor (303); The first screw rod (307) is symmetrically spirally sleeved with a first nut (305), the first nuts (305) on both sides are respectively fixed to the adjustment plate (304), and the two sets of grinding equipment are respectively arranged on the adjustment plate (304) on the corresponding side.

4. A turnout grinding device according to claim 3, characterized in that: A second screw rod (302) is also rotatably arranged on the vehicle frame (2), and a second nut (301) fixed to the positioning plate (3) is spirally sleeved on the second screw rod (302).

5. A turnout grinding device as claimed in claim 4, characterized in that: A guide rod (203) is also fixedly arranged on the vehicle frame (2), and a guide plate (204) fixed to the positioning plate (3) is slidably sleeved on the guide rod (203).

6. A turnout grinding device as claimed in claim 3, characterized in that: The bottoms of the adjustment plates (304) on both sides are respectively fixed with limit seats (308), the servo device comprises a second motor (402) fixed on one side of the limit seat (308), a driving wheel (403) rotatably arranged on the other side of the limit seat (308), and an output end of the second motor (402) passes through the limit seat (308) and is fixed to the driving wheel (403).

7. A turnout grinding device according to claim 6, characterized in that: The driven wheels (505) on both sides are rotatably arranged at the ends of the swing arms (504), a limiting plate (306) is fixedly arranged at the bottom of the limiting seat (308), and the swing arms (504) on both sides are rotatably connected to the limiting plate (306) via support shafts.

8. A turnout grinding device according to claim 7, characterized in that: The adjusting mechanism includes a rotating part, which is used to drive the support shafts on both sides to rotate synchronously, and the rotation directions of the support shafts on both sides are opposite.

9. A turnout grinding device according to claim 8, characterized in that: The rotating part includes a gear (503) fixed to the end of the support shaft; A lifting electric cylinder (5) is fixedly arranged on one side of the limit plate (306), a U-shaped frame (501) is fixedly arranged on the driving end of the lifting electric cylinder (5), and racks (502) respectively meshing with gears (503) on both sides are fixedly arranged in a symmetrical manner on both sides of the U-shaped frame (501).

10. A process for grinding a turnout, characterized in that: A turnout grinding device according to any one of claims 1 to 9 comprises the following steps: The grinding mechanism (4) is arranged on the traveling trolley, and as the traveling trolley moves, the grinding mechanisms (4) on both sides are driven to move synchronously; In the initial state, the grinding belt (401) between the two sets of driven wheels (505) is horizontal and does not contact the upper surface of the rail head; When grinding is required, the adjustment mechanism adjusts the driven wheels (505) on both sides to move downward, so that the driven wheels (505) on both sides synchronously drive the horizontal grinding belt (401) to contact the upper surface of the rail head, and then drives the driven wheels (505) on both sides to move downward again for a certain distance, so that the horizontal grinding belt (401) can be pressed to bend and completely fit the upper surface of the rail head; The driving wheel (403) is driven to rotate by a servo device, and the driving wheel (403) can drive the grinding belt (401) to rotate during the rotation process, thereby grinding the upper surface of the rail head; After the grinding is completed, the driven wheels (505) on both sides are driven to rise by the adjustment mechanism, so that the grinding belt (401) between the driven wheels (505) on both sides is separated from the track; The grinding device is driven by the walking trolley to move forward a distance of the width of the grinding belt (401), and the above operation is repeated again, and so on.

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