Rail grinding equipment for railway maintenance

Abstract

The invention relates to the technical field of rail grinding, and discloses rail grinding equipment for railway maintenance, which comprises a moving table, a walking mechanism, a grinding mechanism and a driving mechanism, the walking mechanism comprises a ground walking wheel arranged at the end part of the cross beam, an extending shaft is arranged at the end part of the moving table, the extending shaft is rotationally connected with the middle part of a rotating arm, and a track walking wheel which ascends and descends reversely with the ground walking wheel is arranged at one end, far away from the center of the moving table, of the rotating arm; the polishing mechanism comprises a deflection arm rotationally connected to the surface of the moving table, a suspension arm is arranged at the end, away from the moving table, of the deflection arm, a polishing roller is arranged at the end, close to the ground, of the suspension arm, and the rail walking wheels and the polishing roller make contact with the rails simultaneously. By arranging the ground walking wheels and the rail walking wheels which synchronously and reversely move, the equipment can move on the ground and the rails respectively, and the moving difficulty of the equipment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rail grinding, in particular to a rail grinding device for railway maintenance. Background Art

[0002] Rail grinding is an important part of railway maintenance. During the use of rails, the rolling and friction of train wheels will cause surface defects such as unevenness, burrs, and pitting. Grinding can remove these defects, make the rail surface smoother, and reduce wear and vibration between wheels and rails.

[0003] Conventional track grinding equipment includes large locomotives dedicated to grinding and handheld grinding equipment. The large locomotives are too expensive to use, while handheld grinding equipment is usually only provided with a single track, which means that the operator needs to hold the equipment and move it along the track during use. The use process is relatively cumbersome, so it needs to be improved. Summary of the invention

[0004] The present invention provides a track grinding device for railway maintenance, which solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A rail grinding device for railway maintenance comprises a moving platform, a traveling mechanism, a grinding mechanism and a driving mechanism; the traveling mechanism comprises a lifting sliding column slidably connected to both sides of the moving platform, a position locking device for fixing the height is arranged between the lifting sliding column and the moving platform, an I-shaped lifting frame is arranged at one end of the lifting sliding column close to the ground, cross beams are arranged at both sides of the I-shaped lifting frame, ground walking wheels are arranged at the ends of the cross beams, an extension shaft is arranged at the end of the moving platform, the extension shaft is rotatably connected to the middle part of the rotating arm, and a rotating arm is arranged at one end of the rotating arm away from the center of the moving platform A track travel wheel that rises and falls in the opposite direction to the ground travel wheel; a grinding mechanism, including a deflection arm rotatably connected to the surface of the moving platform, a suspension arm is provided at the end of the deflection arm away from the moving platform, a grinding roller is provided at the end of the suspension arm close to the ground, and the track travel wheel and the grinding roller are in contact with the rail at the same time; a driving mechanism, including a lifting sleeve provided at the end of the moving platform, a lifting column is slidably connected to the lifting sleeve, the end of the lifting column is rotatably connected to a driving shaft, a driving pulley is provided in the middle of the driving shaft, and the outside of the driving pulley is wrapped with a driving belt that drives the ground travel wheel and the grinding roller to rotate.

[0007] As a preferred technical solution of the present invention, the two grinding rollers on the same side of the movable platform face oppositely and are arranged crosswise with the rails. The grinding rollers are truncated cone structures, and the diameter of the grinding rollers away from the rails is larger than the diameter of the grinding rollers close to the rails.

[0008] As a preferred technical solution of the present invention, a clearance groove is provided in the middle of the movable platform, a support frame is provided in the middle of the side of the clearance groove, a guide pulley cooperating with a driving belt is rotatably connected to the support frame, a driving motor is provided on the side of the support frame, and the output shaft of the driving motor is fixedly connected to the end of the guide pulley.

[0009] As a preferred technical solution of the present invention, a rotating sleeve is provided at the end of the deflection arm, the rotating sleeve is fixedly connected to the end of the suspension arm, the rotation angle of the rotating sleeve is less than 10°, the middle part of the rotating sleeve is rotatably connected to a grinding drive rod that rotates synchronously with the grinding roller, the middle part of the grinding drive rod is provided with a grinding driven pulley that cooperates with the driving belt, when the two grinding driven pulleys are located in the middle of the moving platform, the grinding driven pulleys are disengaged from the driving belt, when the two grinding driven pulleys are located on both sides of the moving platform, the grinding driven pulleys press against the driving belt. A transmission rod is rotatably connected to the suspension arm, and a first transmission gear is provided at the end of the grinding drive rod, the first transmission gear is meshedly connected to the second transmission gear, the second transmission gear is fixedly connected to one end of the transmission rod, the other end of the transmission rod is fixedly connected to the third transmission gear, and the third transmission gear is meshedly connected to the fourth transmission gear that is fixedly connected to the grinding roller.

[0010] As a preferred technical solution of the present invention, the end of the rotating arm away from the track walking wheel is rotationally connected to one end of the connecting rod, and the other end of the connecting rod is rotationally connected to the end of the I-shaped lifting frame. When the ground walking wheel moves toward the direction close to the ground, the track walking wheel moves away from the ground. When the ground walking wheel moves away from the ground, the track walking wheel moves toward the direction close to the ground.

[0011] As a preferred technical solution of the present invention, a lifting beam is provided at one end of the lifting sliding column away from the ground, and the lifting beam is rotatably connected to a travel driving rod that rotates synchronously with the ground travel wheel. A travel driven pulley that cooperates with a drive belt is provided in the middle of the travel driving rod. When the lifting sliding column moves to the lowest position, the travel driven pulley fits with the drive belt, and a spring that drives the lifting column to move away from the ground is provided inside the lifting sleeve. The end of the beam is fixedly connected to a mounting frame, and the mounting frame is rotatably connected to a transmission shaft. The middle of the transmission shaft is fixedly connected to a second travel pulley, and the second travel pulley is connected to the first travel pulley through a travel belt. The first travel pulley is fixedly connected to the end of the drive shaft, and the end of the transmission shaft is fixedly connected to the ground travel wheel.

[0012] The present invention has the following benefits:

[0013] By setting up ground running wheels and track running wheels that move synchronously in opposite directions, the equipment can be moved on the ground and on the rails respectively, which reduces the difficulty of moving the equipment. The driving motor can drive the ground running wheels and the grinding rollers to rotate respectively through the driving belt, which reduces the number of driving units. On the one hand, it improves the reliability of the equipment, and on the other hand, it also reduces the weight of the equipment, allowing operators to transfer the equipment more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The present invention is a schematic diagram of the structure of a track grinding device for railway maintenance.

[0016] Figure 2 It is a front view of a track grinding device for railway maintenance.

[0017] Figure 3 The present invention is a schematic diagram of the structure of a track grinding device for railway maintenance after the track running wheels are lifted.

[0018] Figure 4 for Figure 3 Front view of .

[0019] Figure 5 The present invention is a schematic diagram of the structure of a track grinding device for railway maintenance after the track running wheels are lowered.

[0020] Figure 6 for Figure 5 Right view of .

[0021] Figure 7 The present invention is a schematic diagram of the structure inside a give-way groove in a track grinding device for railway maintenance.

[0022] Figure 8 The present invention is a schematic diagram of the structure of a driving mechanism in a track grinding device for railway maintenance.

[0023] Fig. 9 for Figure 8 A is a partial enlarged schematic diagram of the middle part.

[0024] Fig.10 for Figure 8 Front view of .

[0025] Fig.11 The present invention is a schematic diagram of the structure of a suspension arm in a track grinding device for railway maintenance.

[0026] In the figure: 1, moving platform; 2, walking mechanism; 3, grinding mechanism; 4, driving mechanism; 5, extension shaft; 6, rotating arm; 7, track walking wheel; 8, connecting rod; 9, I-shaped lifting frame; 10, crossbeam; 11, ground walking wheel; 12, lifting sliding column; 13, second walking pulley; 14, mounting frame; 15, walking belt; 16, walking driving rod; 17, first walking pulley; 18, lifting beam; 19, walking driven pulley; 20, lifting sleeve ; 21. Lifting column; 22. Driving shaft; 23. Driving pulley; 24. Driving belt; 25. Support frame; 26. Guide pulley; 27. Driving motor; 28. Deflection arm; 29. ​​Rotating sleeve; 30. Suspension arm; 31. Grinding roller; 32. Grinding driving rod; 33. Grinding driven pulley; 34. First transmission gear; 35. Second transmission gear; 36. Transmission rod; 37. Third transmission gear; 38. Fourth transmission gear; 39. Give way groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In one embodiment, see Figure 1-Figure 11 , a rail grinding device for railway maintenance, comprising a moving platform 1, a traveling mechanism 2, a grinding mechanism 3 and a driving mechanism 4;

[0029] The walking mechanism 2 includes a lifting sliding column 12 slidably connected to both sides of the moving platform 1, a clearance groove 39 is arranged in the middle of the moving platform 1, the lifting sliding column 12 is vertically arranged on the front and rear sides of the clearance groove 39, and a locking device is arranged on the moving platform 1. For example, a locking clamp can be adopted. After the height adjustment of the lifting sliding column 12 is completed, the lifting sliding column 12 can be fixed by the locking clamp. The upper surface of the I-shaped lifting frame 9 arranged in the front and rear directions is fixedly connected at the lower end of the lifting sliding column 12. The left and right cross beams 10 are arranged on the front and rear sides of the I-shaped lifting frame 9. The left and right ends of the cross beam 10 are both provided with ground walking wheels 11. The left and right sides of the front and rear ends of the moving platform 1 are both provided with extension shafts 5. The four front and rear extension shafts 5 are symmetrically arranged, and the extension shafts 5 are rotatably connected to the middle part of the rotating arm 6. The end of the rotating arm 6 away from the center of the moving platform 1 is provided with a track walking wheel 7 which is lifted in the opposite direction to the ground walking wheel 11.

[0030] The grinding mechanism 3 includes a deflection arm 28 rotatably connected to the surface of the moving platform 1. The four deflection arms 28 are located at the front and rear sides of the left and right sides of the clearance groove 39, and the lower end of the deflection arm 28 is rotatably connected to the upper surface of the moving platform 1. An angle locking device is provided at the connection position. When the deflection arm 28 completes the rotation, the direction of the deflection arm 28 can be fixed by the angle locking device. A suspension arm 30 is provided at the upper end of the deflection arm 28. A grinding roller 31 is provided at the end of the suspension arm 30 close to the ground. A wire brush is provided on the outside of the grinding roller 31, so as to realize the grinding treatment of the rail, and the moving The two grinding rollers 31 on the same side of the table 1 face in opposite directions and are arranged crosswise with the rails. For example, the angle between the grinding roller 31 and the rails is designed to be 45 degrees. The grinding roller 31 is a truncated cone structure. The diameter of the grinding roller 31 on the side away from the rails is larger, so that the grinding roller 31 can effectively grind the top and side of the rails. When the track running wheel 7 moves to the low point, the track running wheel 7 will contact the rails, and the grinding roller 31 will also contact the rails, so that the grinding roller 31 can grind the rails while the track running wheel 7 moves along the rails.

[0031] The driving mechanism 4 includes a lifting sleeve 20 vertically arranged at the front and rear ends of the upper surface of the movable platform 1, and a vertically arranged lifting column 21 is slidably connected to the upper side of the lifting sleeve 20, and the upper end of the lifting column 21 is rotatably connected to a driving shaft 22 arranged in a front-to-rear direction, and a driving pulley 23 is arranged in the middle part of the driving shaft 22, and a driving belt 24 is wrapped around the outside of the driving pulley 23. The driving belt 24 can drive the ground walking wheel 11 and the grinding roller 31 to rotate respectively, but the ground walking wheel 11 and the grinding roller 31 will not rotate at the same time.

[0032] In one case of the present embodiment, a support frame 25 is provided in the middle of the left and right sides of the give way groove 39, the lower end of the support frame 25 is fixedly connected to the upper surface of the movable platform 1, and the upper end of the support frame 25 is rotatably connected to a guide pulley 26 arranged in a front-to-rear direction, and the guide pulley 26 can open the driving belt 24 to both sides, so that the subsequent driving belt 24 drives the ground walking wheel 11 or the grinding roller 31 to rotate, and a spring is provided inside the lifting sleeve 20, and the spring pushes the lifting column 21 upward, so that the driving belt 24 always keeps a tensioned state, and a driving motor 27 is provided on the rear side of the right support frame 25, and the output shaft of the driving motor 27 is fixedly connected to the rear end of the right guide pulley 26, so that the driving belt 24 is driven to rotate by the driving motor 27.

[0033] In one case of the present embodiment, a rotating sleeve 29 arranged in a front-to-rear direction is rotatably connected to the upper end of the deflection arm 28, and the rotating sleeve 29 is fixedly connected to the upper end of the suspension arm 30, and the rotating sleeve 29 can be slightly deflected left and right relative to the deflection arm 28, and the deflection angle is less than 10°. Therefore, when the deflection arm 28 is extended in a direction away from the moving platform 1, under the rotation of the rotating sleeve 29, the suspension arm 30 can remain in a vertical state above the rail, and at this time, the suspension arm 30 can also swing slightly left and right, so that the suspension arm 30 can avoid some obstacles by swinging after encountering them, and the middle part of the rotating sleeve 29 is rotated. A grinding drive rod 32 is connected to the movable table 1 and arranged in a front-to-rear direction. Two rotating sleeves 29 on the same side of the movable table 1 are rotatably connected to the front and rear sides of the same grinding drive rod 32. A grinding driven pulley 33 cooperating with the driving belt 24 is fixedly connected to the middle part of the grinding drive rod 32. When the deflection arm 28 rotates toward the center of the movable table 1, the two grinding driven pulleys 33 move together. At this time, the grinding driven pulleys 33 will be disengaged from the driving belt 24. When the deflection arm 28 moves toward the direction away from the center of the movable table 1, the two grinding driven pulleys 33 spread the driving belt 24, so that the grinding driven pulley 33 rotates with the driving belt 24. And the transmission rod 36 is rotatably connected to the side of the suspension arm 30, and the end of the grinding drive rod 32 is provided with a first transmission gear 34, the first transmission gear 34 is meshed and connected to the second transmission gear 35, the second transmission gear 35 is fixedly connected to one end of the transmission rod 36, and the other end of the transmission rod 36 is fixedly connected to the third transmission gear 37, and the third transmission gear 37 is meshed and connected to the fourth transmission gear 38 fixedly connected to the grinding roller 31. Therefore, when the grinding drive rod 32 rotates, the grinding roller 31 will also rotate synchronously.

[0034] In one case of this embodiment, one end of the rotating arm 6 away from the track walking wheel 7 is rotated to connect one end of the connecting rod 8, and the other end of the connecting rod 8 is rotated to connect the end of the I-shaped lifting frame 9. When the ground walking wheel 11 moves toward the ground, the track walking wheel 7 moves away from the ground. When the ground walking wheel 11 moves away from the ground, the track walking wheel 7 moves toward the ground. That is to say, when the track running wheel 7 falls on the rail, the ground running wheel 11 retracts into the inside of the give way groove 39, and at this time the entire device moves on the rail through the track running wheel 7, and when the ground running wheel 11 moves downward and contacts the ground, the track running wheel 7 flips over to the top of the moving platform 1, and at this time the entire device moves on the ground only through the ground running wheel 11, and a lifting beam 18 arranged in a front-to-back direction is fixedly connected to the upper end of the lifting sliding column 12, and a lifting beam 18 arranged in a front-to-back direction is rotatably connected to the lower surface of the lifting beam 18. A walking driven pulley 19 is fixedly connected to the middle part of the walking driven pulley 16. When the entire lifting beam 18 and the ground running wheel 11 move downward, the walking driven pulley 19 will move to a position lower than the guide pulley 26. At this time, the driving belt 24 between the two guide pulleys 26 is driven by the walking driven pulley When the driven pulley 19 is pressed down, the driving belt 24 can drive the walking driven pulley 19 to rotate. When the lifting beam 18 and the ground walking wheel 11 move upward, the walking driven pulley 19 is higher than the guide pulley 26. At this time, the walking driven pulley 19 is disengaged from the driving belt 24, and the ground walking wheel 11 stops rotating. A U-shaped mounting frame 14 is provided at both ends of the crossbeam 10. The mounting frame 14 is rotatably connected to a transmission shaft arranged in a front-to-rear direction. The front and rear ends of the transmission shaft are fixedly connected to the ground walking wheel 11. The first walking pulley 17 is fixedly connected to the front and rear ends of the walking drive rod 16. The first walking pulley 17 is simultaneously connected to two second walking pulleys 13 fixedly connected to the transmission shaft through the walking belt 15. Therefore, the walking drive rod 16 drives the ground walking wheel 11 to rotate through belt transmission to achieve the effect of synchronous rotation.

[0035] During the implementation of this embodiment, the grinding equipment first needs to be transported to the site by a transport vehicle and unfolded. The grinding equipment can be powered by batteries, and the entire grinding equipment can be moved by manual pushing or vehicle traction.

[0036] During the equipment transfer process, when the equipment needs to be moved from the transfer location to the position of the rail, there is a section of the distance in the middle where the equipment needs to move on the ground. At this time, the lifting sliding column 12 is moved downward, so that the I-shaped lifting frame 9 drives the ground walking wheel 11 to move downward, and the walking driven pulley 19 contacts the driving belt 24. The I-shaped lifting frame 9 will drive the rotating arm 6 to rotate, so that the track walking wheel 7 moves to the top of the moving platform 1, and at the same time, the deflection arm 28 is rotated inwardly, so that the deflection arms 28 on the left and right sides are close to each other, and the grinding driven pulley 33 is disengaged from the driving belt 24, and the lifting column 21 moves upward adaptively. The adaptive movement of the lifting column 21 can keep the driving belt 24 always in a tensioned state to avoid loosening and falling off from the relevant pulleys. The lifting sliding column 12 is fixed by the locking device. At this time, the entire equipment can be directly placed on the ground, the ground walking wheel 11 contacts the ground, and the drive motor 27 is started. The driving belt 24 drives the walking drive rod 16 to rotate, thereby rotating the ground walking wheel 11, and the entire equipment can be moved on the ground.

[0037] During the equipment grinding process, when the equipment moves to the side of the rail, the locking device is released, and the lifting sliding column 12 is pulled upward. The I-shaped lifting frame 9 drives the travel driven pulley 19 and the ground travel wheel 11 to move upward. At this time, the travel driven pulley 19 is disengaged from the driving belt 24, and the ground travel wheel 11 shrinks to the inside of the clearance groove 39. The I-shaped lifting frame 9 pulls the rotating arm 6 to rotate through the connecting rod 8, and the track travel wheel 7 moves to the bottom. The locking device is tightened again. At this time, the equipment is placed on the rail, and the four conical track travel wheels 7 are respectively in contact with the two rails to achieve the effect of automatic centering. At this time, the deflection arm 28 is separated to both sides. The deflection arm 28 opens outward, and when the opening angle of the deflection arm 28 meets the spacing requirement, that is, the grinding roller 31 under the suspension arm 30 just falls on the rail, the angle of the deflection arm 28 is fixed. At this time, the driving belt 24 is wrapped around the outside of the grinding driven pulley 33, and the driving motor 27 rotates the grinding drive rod 32 through belt transmission. The grinding drive rod 32 rotates the grinding roller 31 through gear transmission, so that the grinding roller 31 grinds the rail. The operator moves the entire equipment on the rail, and the grinding process is completed by the grinding roller 31 during the movement.

[0038] The present invention is applicable to a track grinding device for railway maintenance. By arranging ground running wheels 11 and track running wheels 7 that move synchronously in opposite directions, the device can be moved on the ground and on the rails respectively, thereby reducing the difficulty of moving the device. In addition, the driving motor 27 can drive the ground running wheels 11 and the grinding rollers 31 to rotate respectively through the driving belt 24, thereby reducing the number of driving units. On the one hand, this improves the reliability of the device, and on the other hand, it also reduces the weight of the device, thereby allowing operators to transfer the device more easily.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A rail grinding device for railway maintenance, characterized in that: It includes a moving platform, a walking mechanism, a grinding mechanism and a driving mechanism; The walking mechanism includes a lifting sliding column slidably connected to both sides of the moving platform, a position locking device for fixing the height is arranged between the lifting sliding column and the moving platform, an I-shaped lifting frame is arranged at one end of the lifting sliding column close to the ground, cross beams are arranged at both sides of the I-shaped lifting frame, and ground walking wheels are arranged at the ends of the cross beams, and an extension shaft is arranged at the end of the moving platform, the extension shaft is rotatably connected to the middle part of the rotating arm, and a track walking wheel that is lifted and lowered in the opposite direction to the ground walking wheel is arranged at one end of the rotating arm away from the center of the moving platform; The grinding mechanism comprises a deflection arm rotatably connected to the surface of the moving platform, a suspension arm is arranged at one end of the deflection arm away from the moving platform, a grinding roller is arranged at one end of the suspension arm close to the ground, and the track travel wheel and the grinding roller are in contact with the rail at the same time; The driving mechanism includes a lifting sleeve arranged at the end of the movable platform, the lifting sleeve is slidably connected with a lifting column, the end of the lifting column is rotatably connected with a driving shaft, a driving pulley is arranged in the middle of the driving shaft, and the outside of the driving pulley is wrapped with a driving belt that drives the ground walking wheel and the grinding roller to rotate.

2. A rail grinding device for railway maintenance according to claim 1, characterized in that: The two grinding rollers on the same side of the movable platform face oppositely and are arranged crosswise with the rails. The grinding rollers are truncated cone structures, and the diameter of the grinding rollers away from the rails is larger than the diameter of the grinding rollers close to the rails.

3. A rail grinding device for railway maintenance according to claim 1, characterized in that: A clearance groove is arranged in the middle of the movable platform, a support frame is arranged in the middle of the side of the clearance groove, a guide pulley cooperating with the driving belt is rotatably connected to the support frame, a driving motor is arranged on the side of the support frame, and the output shaft of the driving motor is fixedly connected to the end of the guide pulley.

4. A rail grinding device for railway maintenance according to claim 1, characterized in that: A rotating sleeve is provided at the end of the deflection arm, and the rotating sleeve is fixedly connected to the end of the suspension arm. The rotation angle of the rotating sleeve is less than 10°. The middle part of the rotating sleeve is rotatably connected to a grinding drive rod that rotates synchronously with the grinding roller. The middle part of the grinding drive rod is provided with a grinding driven pulley that cooperates with the driving belt. When the two grinding driven pulleys are located in the middle of the moving platform, the grinding driven pulleys are disengaged from the driving belt. When the two grinding driven pulleys are located on both sides of the moving platform, the grinding driven pulleys press the driving belt tightly.

5. A rail grinding device for railway maintenance according to claim 4, characterized in that: A transmission rod is rotatably connected to the suspension arm, and a first transmission gear is arranged at the end of the grinding drive rod. The first transmission gear is meshedly connected to the second transmission gear, the second transmission gear is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is fixedly connected to the third transmission gear, and the third transmission gear is meshedly connected to the fourth transmission gear fixedly connected to the grinding roller.

6. The rail grinding equipment for railway maintenance according to claim 1, characterized in that: The end of the rotating arm away from the track walking wheel is rotated to connect one end of the connecting rod, and the other end of the connecting rod is rotated to connect the end of the I-shaped lifting frame. When the ground walking wheel moves toward the direction close to the ground, the track walking wheel moves away from the ground. When the ground walking wheel moves toward the direction away from the ground, the track walking wheel moves toward the direction close to the ground.

7. The rail grinding equipment for railway maintenance according to claim 1, characterized in that: A lifting beam is provided at one end of the lifting sliding column away from the ground, and the lifting beam is rotatably connected to a travel driving rod that rotates synchronously with the ground travel wheel. A travel driven pulley that cooperates with a drive belt is provided in the middle of the travel driving rod. When the lifting sliding column moves to the lowest position, the travel driven pulley fits the drive belt, and a spring that drives the lifting column to move in a direction away from the ground is provided inside the lifting sleeve.

8. A rail grinding device for railway maintenance according to claim 7, characterized in that: The end of the crossbeam is fixedly connected to a mounting frame, the mounting frame is rotatably connected to a transmission shaft, the middle of the transmission shaft is fixedly connected to a second walking pulley, the second walking pulley is connected to the first walking pulley through a walking belt, the first walking pulley is fixedly connected to the end of the driving shaft, and the end of the transmission shaft is fixedly connected to a ground walking wheel.

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