A weld seam grinding device for railway track maintenance

Abstract

The utility model relates to the technical field of polishing device, more specifically, it relates to a kind of welding seam polishing device for train track maintenance, and the polishing roller is reversed by rotation, and the polishing interval of equipment is changed by reversing, so as to segment polishing the left and right sides of the rail with center as reference, the output end of polishing roller is upwards after reversing, and the reversing frame is rotated by starting motor, and the polishing roller is reversed, and the reversing rod is rotated by starting motor, so as to change the top polishing of rail and polishing in side groove, and the polishing interval is adjusted by sliding on positioning buckle by sliding block, the polishing roller is rotated by starting motor, so as to polish, and the convenience and stability of equipment polishing are improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding device technology, and more specifically, it relates to a weld grinding device for train track maintenance. Background Technology

[0002] Railway tracks, professionally known as "railway lines," are complex systems engineering projects, not just two parallel steel rails. Their main function is to guide train wheels, bear the enormous pressure from the wheels, and distribute this pressure to the roadbed. Besides the traditional "ballast track," high-speed railways and heavy-haul lines now widely use "ballastless track." It replaces the crushed stone track bed with a monolithic foundation such as a concrete slab, resulting in higher stability, smoothness, and less maintenance. Uneven welds can cause huge, periodic impacts when wheels pass over them. This "clanging" impact can quickly cause the fasteners securing the rails to loosen, sleepers to crack or be damaged, severely weakening the stability of the track structure. The enormous impact force can be transmitted into the rails, initiating fatigue cracks from weak points in the welds, potentially leading to major safety accidents such as rail breaks. Therefore, grinding the rail welds is crucial. The most common existing weld grinding equipment is the angle grinder. However, current technology for angle grinders has certain problems and defects that can affect the use of the equipment.

[0003] First, when the equipment is in use, it needs to be polished manually. The intensity of manual polishing varies with the processing time, which in turn affects the quality of the processing. As a result, the equipment has low functionality and poor practicality.

[0004] Secondly, when the equipment is in use, manual processing along the rails is required, which is time-consuming and labor-intensive, resulting in low displacement performance of the equipment and thus a low degree of automation.

[0005] Furthermore, when the equipment is being processed, the rails are often laid using gravel or similar materials. During processing, the rails may become crooked and unstable when standing on the gravel, resulting in low stability of the equipment and consequently poor practicality. Utility Model Content

[0006] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a weld grinding device for train track maintenance to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a weld grinding device for train track maintenance, comprising a mounting plate, on which a grinding device is mounted, the grinding device comprising a curved rod, the left and right ends of which are rotatably connected to corresponding mounting plates, a positioning buckle fitted on the curved rod, a slider slidably connected to the positioning buckle, a flipping frame rotatably connected to the slider, a flipping rod hinged to the flipping frame, a motor mounted on both the flipping frame and the flipping rod, a grinding roller rotatably connected to the flipping rod, a motor mounted on the grinding roller, a displacement assembly on the mounting plate, the displacement assembly comprising a connecting rod, the connecting rod rotatably connected to a corresponding mounting plate, a support arm hinged to the connecting rod, a wheel seat rotatably connected to the support arm, a roller mounted on the wheel seat, and a clamping assembly on the mounting plate.

[0008] This utility model is further configured such that: a driven gear is fitted on the left side of the crank, and a drive gear is meshed with the driven gear. One end of the drive gear is rotatably connected to the mounting plate on the left side, and a mounting frame is provided on one end of the drive gear. A second motor is mounted on the mounting frame. During the grinding of the rail, the second motor on the mounting frame is started to rotate, which drives the drive gear connected to it to rotate. This rotation drives the crank fitted with the driven gear to rotate on the mounting plate, which in turn drives the grinding roller to rotate. By rotating, the grinding range of the equipment is changed, thereby grinding the rail in sections on both sides with the center as the reference. After rotation, the output end of the grinding roller will face upwards. The motor drives the tilting frame to rotate, causing the grinding roller to tilt. This, combined with the starter motor, drives the tilting rod to rotate, thus changing the grinding location from the top of the rail to the side grooves. A sliding slider adjusts the grinding area by sliding on the positioning buckle. The starter motor then drives the grinding roller to rotate, improving the convenience and stability of the grinding process, thereby enhancing its functionality. During this process, rotating the connecting rod causes the support arm to rotate, aligning the wheel seat with the output end of the rail. By fitting the H-shaped roller against the rail, the equipment slides along the rail for grinding, improving its displacement performance and thus enhancing its ease of use and practicality.

[0009] The present invention is further configured such that: an electric push rod is fitted on the positioning buckle, the output end of the electric push rod is connected to one end of the slider, and during the sliding of the slider, the output end of the electric push rod is activated to slide, thereby driving the slider to slide accordingly, thereby improving the automation level of the equipment adjustment and thus improving the practicality of the equipment.

[0010] This utility model is further configured as follows: the clamping assembly includes a clamping plate, a hinge seat is provided on the mounting plate, the clamping plate passes through the hinge seat and is rotatably connected to the mounting plate, the clamping plate is provided with a mounting groove, a connecting block is rotatably connected to the mounting groove, a pull rod is rotatably connected to the connecting block, a positioning rack is rotatably connected to the pull rod, a slide rail is slidably connected to the positioning rack, one end of the slide rail is connected to one end of the corresponding mounting plate, a positioning gear is meshed with the positioning rack, one end of the positioning gear is connected to one end of the connecting rod, a double-headed rack is meshed with the positioning gear, a second electric push rod is provided at one end of the double-headed rack, the second electric push rod and the mounting plate are fixedly fitted together, a fixed seat is provided on both the double-headed rack and the support arm, an arc-shaped rod is rotatably connected to the fixed seat, and during the processing and grinding of the rail, the output of the second electric push rod is activated. The output end slides, and during this sliding process, it drives the double-headed rack connected to the output end of the electric push rod to slide up and down. When the rail needs to be processed, the double-headed rack slides upward. During this sliding process, it drives the positioning gear meshing with the double-headed rack to rotate. Through rotation, the positioning rack slides downward along the slide rail. Under the push of the positioning rack, it drives the pull rod to push the connecting block, causing the connecting block to rotate in the mounting groove as the angle of the clamping plate changes. This clamps the clamping plate in the hinge seat and clamps both sides of the rail. At the same time, as the double-headed rack slides upward, it drives the arc-shaped rod connected to it to rotate on the fixed seat. Through rotation, it pulls the support arm to separate the roller and the rail. The operation is reversed during displacement to improve the processing stability of the equipment and thus improve its practicality.

[0011] This utility model is further configured such that: a top plate is slidably connected to the clamping plate, a spring is fitted onto the top plate, one end of the spring is connected to one end of the clamping plate, a push rod is hinged to the top plate, one end of the push rod is rotatably connected to a push block, the push block is slidably connected to the clamping plate, and the other end of the push block is provided with a fixing plate. When the clamping plate clamps, the top plate and the vertical surface of the groove of the rail are in contact. During the contact, the top plate slides on the clamping plate. During the displacement, it drives the push rod connected to it to shorten the distance between itself and the clamping plate, so that the push rod supports the push block, and the push block slides on the clamping plate. The push block drives the fixing plate and the upper and lower ends of the groove of the rail to be supported. Through the three-way support, the stability of the equipment clamping is improved, thereby improving the practicality of the equipment.

[0012] The present invention is further configured such that: a magnetic attraction is provided on the top plate, and the stability of the equipment clamping is improved by adding the magnetic attraction during the support process of the top plate, thereby improving the practicality of the equipment.

[0013] This utility model is further configured such that: one end of the roller is provided with a connecting gear, the connecting gear meshes with a fixed gear, the fixed gear is rotatably connected to the wheel seat, one end of the fixed gear is provided with a positioning frame, one end of the positioning frame is connected to one end of the wheel seat, and a motor is provided on the positioning frame. During the rotation of the roller, the motor on the positioning frame is started to rotate, which drives the fixed gear connected to it to rotate accordingly. Through the connection relationship between the fixed gear and the connecting gear, the roller is driven to rotate, thereby improving the automation level of the equipment and thus improving the practicality of the equipment.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: 1. During the grinding process of the rails, the second motor on the mounting frame is started to rotate, which drives the connected drive gear to rotate. The rotation of the drive gear and the crank rod in the driven gear set rotates on the mounting plate. The rotation causes the grinding roller to rotate, changing the grinding area of ​​the equipment. This allows for segmented grinding of the rails on both sides with the center as the reference. After rotation, the output end of the grinding roller will face upward. The starting motor drives the rotating frame to rotate, causing the grinding roller to rotate. The starting motor also drives the rotating rod to rotate, changing the grinding of the top and the side groove of the rails. The sliding slider adjusts the grinding area by sliding on the positioning buckle. The first motor drives the grinding roller to rotate, thus improving the convenience and stability of the equipment grinding, thereby enhancing the functionality of the equipment grinding. 2. By rotating the connecting rod, the support arm is driven to rotate. After rotation, the wheel seat and the output end of the rail are aligned. By fitting the H-shaped roller with the rail, the equipment slides and grinds along the rail, thereby improving the displacement performance of the equipment, thus improving the grinding convenience of the equipment and improving the practicality of the equipment. 3. During the processing and grinding of the rails, the output end of the second electric push rod is activated to slide. During this sliding process, the double-headed rack connected to the output end of the second electric push rod is driven to slide up and down. When the rails need to be processed, the double-headed rack slides upward. During this sliding process, the positioning gear meshing with the double-headed rack rotates accordingly. Through rotation, the positioning rack slides downward along the slide rail. Under the push of the positioning rack, the pull rod pushes the connecting block, causing the connecting block to rotate in the mounting groove as the angle of the clamping plate changes. This clamps the clamping plate in the hinge seat, clamping both sides of the rails. At the same time, as the double-headed rack slides upward, the arc-shaped rod connected to it rotates on the fixed seat. Through rotation, the support arm is pulled to separate the rollers and the rails. The opposite operation is performed during displacement to improve the processing stability of the equipment, thereby improving the practicality of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a weld grinding device for train track maintenance according to the present invention. Figure 2 This is an exploded structural diagram of a weld grinding device for train track maintenance according to the present invention. Figure 3 This is a schematic diagram of the connection structure between the crank and the mounting plate of a weld grinding device for railway track maintenance according to this utility model. Figure 4 This is a schematic diagram of the connection structure between the mounting plate and the positioning gear of a weld grinding device for railway track maintenance according to this utility model. Figure 5 This is a schematic diagram of the connection structure between the spring and the top plate of a weld grinding device for train track maintenance according to this utility model.

[0016] In the diagram: 1. Mounting plate; 2. Crank rod; 3. Positioning buckle; 4. Slider; 5. Tilting frame; 6. Tilting rod; 7. Motor; 8. Grinding roller; 9. Motor 1; 10. Connecting rod; 11. Support arm; 12. Wheel seat; 13. Roller; 14. Driven gear; 15. Drive gear; 16. Mounting frame; 17. Motor 2; 18. Electric push rod 1; 19. Clamping plate; 20. Hinge seat; 21. Mounting slot; 22. Connecting block; 23. Pull rod; 24. Positioning rack; 25. Slide rail; 26. Positioning gear; 27. Double-headed rack; 28. Electric push rod 2; 29. ​​Fixed seat; 30. Arc rod; 31. Top plate; 32. Spring; 33. Top rod; 34. Push block; 35. Fixed plate; 36. Magnetic attraction; 37. Connecting gear; 38. Fixed gear; 39. Positioning frame; 40. Motor 3. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0020] Please see Figure 1-5 A weld grinding device for railway track maintenance includes a mounting plate 1, on which a grinding device is mounted. The grinding device includes a curved rod 2, the left and right ends of which are rotatably connected to the corresponding mounting plates 1. A positioning buckle 3 is fitted onto the curved rod 2, a slider 4 is slidably connected to the positioning buckle 3, a flipping frame 5 is rotatably connected to the slider 4, a flipping rod 6 is hinged to the flipping frame 5, a motor 7 is mounted on both the flipping frame 5 and the flipping rod 6, a grinding roller 8 is rotatably connected to the flipping rod 6, and a motor 9 is mounted on the grinding roller 8. A displacement assembly is mounted on the mounting plate 1, the displacement assembly including a connecting rod 10, which is rotatably connected to the corresponding mounting plate 1. A support arm 11 is hinged to the connecting rod 10, a wheel seat 12 is rotatably connected to the support arm 11, and a roller 13 is mounted on the wheel seat 12. A clamping assembly is mounted on the mounting plate 1.

[0021] The present invention is further configured such that: a driven gear 14 is fitted on the left side of the crank 2, and a drive gear 15 is meshed with the driven gear 14. One end of the drive gear 15 is rotatably connected to the left mounting plate 1, and a mounting bracket 16 is provided on one end of the drive gear 15. A motor 17 is mounted on the mounting bracket 16. During the grinding of the rail, the motor 17 on the mounting bracket 16 is started to rotate, which drives the drive gear 15 connected to it to rotate. This rotation causes the crank 2 fitted with the driven gear 14 to rotate on the mounting plate 1, which in turn causes the grinding roller 8 to rotate. This rotation changes the operation of the equipment. The grinding section is used to grind the rail in segments on both sides of the center. After flipping, the output end of the grinding roller 8 will face upward. The starting motor 7 drives the flipping frame 5 to rotate, which in turn drives the grinding roller 8 to flip. The starting motor 7 drives the flipping rod 6 to rotate, thereby changing the grinding of the top of the rail and the grinding of the side groove. The sliding slider 4 is used to slide and adjust the grinding section on the positioning buckle 3. The starting motor 9 drives the grinding roller 8 to rotate. During this process, the connecting rod 10 is rotated to drive the support arm 11 to rotate. After rotation, the wheel seat 12 is aligned with the output end of the rail. By putting the H-shaped roller 13 into contact with the rail, the equipment slides and grinds along the rail.

[0022] More specifically: an electric push rod 18 is fitted on the positioning buckle 3. The output end of the electric push rod 18 is connected to one end of the slider 4. During the sliding of the slider 4, the output end of the electric push rod 18 is activated to slide, thereby driving the slider 4 to slide accordingly.

[0023] More specifically: the clamping assembly includes a clamping plate 19, a hinge seat 20 is provided on the mounting plate 1, the clamping plate 19 passes through the hinge seat 20 and is rotatably connected to the mounting plate 1, the clamping plate 19 is provided with a mounting groove 21, a connecting block 22 is rotatably connected to the mounting groove 21, a pull rod 23 is rotatably connected to the connecting block 22, a positioning rack 24 is rotatably connected to the pull rod 23, a slide rail 25 is slidably connected to the positioning rack 24, and one end of the slide rail 25 is connected to a corresponding mounting plate 1. One end of the plate 1 is connected to the positioning rack 24, which meshes with a positioning gear 26. One end of the positioning gear 26 is connected to one end of the connecting rod 10. The positioning gear 26 meshes with a double-headed rack 27. One end of the double-headed rack 27 is provided with an electric push rod 28. The electric push rod 28 and the mounting plate 1 are fixedly fitted together. Both the double-headed rack 27 and the support arm 11 are provided with fixed seats 29. An arc-shaped rod 30 is rotatably connected to the fixed seat 29. When the rail is being moved... During the processing and grinding process, the output end of the electric push rod 28 is slid. During the sliding process, the double-headed rack 27 connected to the output end of the electric push rod 28 is driven to slide up and down. When the rail needs to be processed, the double-headed rack 27 slides upward. During the sliding process, the positioning gear 26 meshing with the double-headed rack 27 rotates accordingly. Through rotation, the positioning rack 24 slides downward along the slide rail 25. Under the push of the positioning rack 24, the pull rod 23 pushes the connecting block 22. The connecting block 22 rotates in the mounting groove 21 as the angle of the clamping plate 19 changes, thereby clamping the clamping plate 19 in the hinge seat 20 to clamp both sides of the rail. At the same time, as the double-headed rack 27 slides upward, the arc-shaped rod 30 connected to it rotates on the fixed seat 29. Through rotation, the support arm 11 is pulled, thereby separating the roller 13 from the rail. The opposite operation is performed during displacement.

[0024] More specifically: A top plate 31 is slidably connected to the clamping plate 19, and a spring 32 is fitted on the top plate 31. One end of the spring 32 is connected to one end of the clamping plate 19. A push rod 33 is hinged to the top plate 31, and a push block 34 is rotatably connected to one end of the push rod 33. The push block 34 is slidably connected to the clamping plate 19, and a fixing plate 35 is provided at the other end of the push block 34. When the clamping plate 19 clamps, the top plate 31 and the vertical surface of the groove of the rail are in contact. When in contact, the top plate 31 slides on the clamping plate 19. During the displacement, the push rod 33 connected to it shortens the distance between itself and the clamping plate 19, so that the push rod 33 supports the push block 34, and the push block 34 slides on the clamping plate 19. The push block 34 drives the fixing plate 35 and the upper and lower ends of the groove of the rail to be supported in a three-way support manner.

[0025] More specifically: the top plate 31 is provided with a magnetic attraction 36, and the stability of the equipment clamping is improved by adding the magnetic attraction 36 during the support process of the top plate 31.

[0026] More specifically: a connecting gear 37 is provided at one end of the roller 13, and a fixed gear 38 is meshed with the connecting gear 37. The fixed gear 38 is rotatably connected to the wheel seat 12. A positioning frame 39 is provided at one end of the fixed gear 38, and one end of the positioning frame 39 is connected to one end of the wheel seat 12. A motor 40 is provided on the positioning frame 39. When the roller 13 is rotated, the motor 40 on the positioning frame 39 is started to rotate. The motor 40 drives the fixed gear 38 connected to it to rotate. Through the connection relationship between the fixed gear 38 and the connecting gear 37, the roller 13 is driven to rotate.

[0027] In summary, during the rail grinding process, the motor 17 on the mounting frame 16 is started to rotate, which in turn drives the drive gear 15 to rotate. This rotation, in turn, causes the crank rod 2, which is fitted with the driven gear 14, to rotate on the mounting plate 1. This rotation causes the grinding roller 8 to rotate, changing the grinding area of ​​the equipment. This allows for segmented grinding of the rail on both sides, with the center as the reference point. After rotation, the output end of the grinding roller 8 faces upwards. The starting motor 7 then drives the rotating frame 5 to rotate, causing the grinding roller 8 to rotate. This, in conjunction with the starting motor 7, drives the rotating rod 6 to rotate. This changes the grinding of the top and side grooves of the rail. The sliding slider 4 adjusts the grinding range by sliding on the positioning buckle 3. The motor 9 drives the grinding roller 8 to rotate. During this process, the connecting rod 10 rotates, causing the support arm 11 to rotate. After rotation, the wheel seat 12 aligns with the output end of the rail. By fitting the H-shaped roller 13 against the rail, the equipment slides and grinds along the rail. During the processing and grinding of the rail, the output end of the electric push rod 28 slides. During this sliding process, the double-headed rack 27 connected to the output end of the electric push rod 28 is raised. When the rail needs to be processed, the double-ended rack 27 slides upward. During the sliding process, the positioning gear 26 meshing with the double-ended rack 27 rotates accordingly. This rotation causes the positioning rack 24 to slide downward along the slide rail 25. Under the push of the positioning rack 24, the pull rod 23 pushes the connecting block 22, causing the connecting block 22 to rotate within the mounting groove 21 as the angle of the clamping plate 19 changes. This clamps the clamping plate 19 within the hinge seat 20, clamping both sides of the rail. Simultaneously, as the double-ended rack 27 slides upward, it drives the arc-shaped rod 3, which is rotatably connected to it. The roller 13 rotates on the fixed base 29, pulling the support arm 11 to separate the roller 13 from the rail. The opposite operation is performed during displacement. When the clamping plate 19 clamps, the top plate 31 and the vertical surface of the groove of the rail are in contact. During contact, the top plate 31 slides on the clamping plate 19. During the displacement, the top rod 33 connected to it shortens the distance between itself and the clamping plate 19, so that the top rod 33 supports the push block 34, and the push block 34 slides on the clamping plate 19. The push block 34 drives the fixed plate 35 and the upper and lower ends of the rail groove to support it through a three-way support method.

[0028] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A weld grinding device for railway track maintenance, comprising a mounting plate (1) on which a grinding device is disposed, characterized in that: The grinding device includes a crank (2), the left and right ends of which are rotatably connected to the corresponding mounting plates (1). A positioning buckle (3) is fitted on the crank (2), a slider (4) is slidably connected to the positioning buckle (3), a flipping frame (5) is rotatably connected to the slider (4), a flipping rod (6) is hinged on the flipping frame (5), a motor (7) is provided on both the flipping frame (5) and the flipping rod (6), a grinding roller (8) is rotatably connected to the flipping rod (6), a motor (9) is provided on the grinding roller (8), a displacement component is provided on the mounting plate (1), the displacement component includes a connecting rod (10), the connecting rod (10) is rotatably connected to the corresponding mounting plate (1), a support arm (11) is hinged on the connecting rod (10), a wheel seat (12) is rotatably connected to the support arm (11), a roller (13) is provided on the wheel seat (12), and a clamping component is provided on the mounting plate (1).

2. The weld grinding device for train track maintenance according to claim 1, characterized in that: A driven gear (14) is fitted on the left side of the crank (2), and a drive gear (15) is meshed with the driven gear (14). One end of the drive gear (15) is rotatably connected to the mounting plate (1) on the left side. A mounting bracket (16) is provided on one end of the drive gear (15), and a motor (17) is provided on the mounting bracket (16).

3. The weld grinding device for train track maintenance according to claim 2, characterized in that: An electric push rod (18) is fitted on the positioning buckle (3), and the output end of the electric push rod (18) is connected to one end of the slider (4).

4. The weld grinding device for train track maintenance according to claim 1, characterized in that: The clamping assembly includes a clamping plate (19), a hinge seat (20) is provided on the mounting plate (1), the clamping plate (19) passes through the hinge seat (20) and is rotatably connected to the mounting plate (1), the clamping plate (19) is provided with a mounting groove (21), a connecting block (22) is rotatably connected to the mounting groove (21), a pull rod (23) is rotatably connected to the connecting block (22), a positioning rack (24) is rotatably connected to the pull rod (23), and a slide rail (25) is slidably connected to the positioning rack (24). One end of the slide rail (25) is connected to a corresponding... One end of the mounting plate (1) is connected to the positioning rack (24), which is meshed with a positioning gear (26). One end of the positioning gear (26) is connected to one end of the connecting rod (10). The positioning gear (26) is meshed with a double-headed rack (27). One end of the double-headed rack (27) is provided with an electric push rod (28). The electric push rod (28) and the mounting plate (1) are fixedly fitted together. The double-headed rack (27) and the support arm (11) are both provided with fixed seats (29). An arc-shaped rod (30) is rotatably connected to the fixed seat (29).

5. A weld grinding device for railway track maintenance according to claim 4, characterized in that: A top plate (31) is slidably connected to the clamping plate (19). A spring (32) is fitted on the top plate (31). One end of the spring (32) is connected to one end of the clamping plate (19). A push rod (33) is hinged on the top plate (31). A push block (34) is rotatably connected to one end of the push rod (33). The push block (34) is slidably connected to the clamping plate (19). A fixing plate (35) is provided at the other end of the push block (34).

6. A weld grinding device for train track maintenance according to claim 5, characterized in that: A magnetic attraction (36) is provided on the top plate (31).

7. A weld grinding device for railway track maintenance according to any one of claims 2 or 4, characterized in that: One end of the roller (13) is provided with a connecting gear (37), and the connecting gear (37) meshes with a fixed gear (38). The fixed gear (38) is rotatably connected to the wheel seat (12). One end of the fixed gear (38) is provided with a positioning frame (39), and one end of the positioning frame (39) is connected to one end of the wheel seat (12). A motor (40) is provided on the positioning frame (39).

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