A segmented grinding track grinding device

Abstract

This invention relates to the field of track grinding technology, specifically to a track grinding device for segmented grinding. It includes a trolley; a rotating shaft mounted on the trolley and rotatably connected to it; and two grinding components, respectively disposed on opposite sides of the rotating shaft. Each grinding component includes a frame fixedly connected to the rotating shaft; each grinding component also includes at least two grinding wheels, each grinding wheel having a different contact position with the track, the grinding wheels being arranged around the rotating shaft and rotatably connected to the frame; wherein the rotating shaft drives the frame to rotate around its central axis, causing one grinding wheel to contact the track. In this invention, a single grinding trolley can perform long-distance operations continuously, pausing only briefly during the switching of grinding wheels, fundamentally overcoming the problems of frequent interruptions caused by overheating of the grinding head and the difficulties in transportation, thereby improving the efficiency of single-machine operation.

Description

Technical Field

[0001] This invention relates to the field of track grinding technology, and more specifically, to a track grinding device for segmented grinding. Background Technology

[0002] Track grinding equipment is mainly used for railway track maintenance. Its purpose is to repair wear, unevenness, or defects on the track surface to ensure the smoothness and safety of train operation. Currently, the main type of track grinding equipment is the rail grinding vehicle, which can travel on tracks with a gauge of 900-1676mm and can be moved along the tracks manually or by a tractor.

[0003] Segmented grinding technology is a method that divides the rail into multiple independent areas for sequential or parallel grinding. However, current rail grinding vehicles tend to use a multi-directional simultaneous grinding method. For example, Chinese Patent Publication No. CN218115994U discloses a rail grinding vehicle for rails, specifically disclosing that: the main body of the grinding vehicle moves along the rail, the outer wall grinding structure grinds the outer side of the rail, the top surface grinding structure grinds the top of the rail, and the inner wall grinding structure grinds the inner side of the rail, grinding the rail from three sides simultaneously, effectively ensuring the comprehensiveness of rail grinding and high grinding efficiency.

[0004] While this improves grinding efficiency, the three grinding structures cannot be switched and must operate simultaneously. However, prolonged grinding puts a strain on the heat resistance of these structures, which can currently only be addressed by stopping the machine to allow them to dissipate heat. This directly leads to a decrease in effective working time utilization. Even with multiple rail grinding vehicles operating in parallel, the process becomes cumbersome due to the need to move the grinding vehicles between different areas. Summary of the Invention

[0005] The purpose of this invention is to provide a segmented rail grinding device to solve the problems of low effective working time utilization of a single rail grinding vehicle and cumbersome handling of multiple rail grinding vehicles.

[0006] To achieve the above objectives, a segmented grinding track grinding device is provided, comprising:

[0007] A small car;

[0008] A rotating shaft is mounted on the trolley and is rotatably connected to the trolley.

[0009] as well as,

[0010] Two grinding components are respectively disposed on both sides of the rotating shaft; each grinding component includes a frame, which is fixedly connected to the rotating shaft; each grinding component also includes at least two grinding wheels, and each grinding wheel has a different contact position with the track, the grinding wheels are arranged around the rotating shaft, and the grinding wheels are rotatably connected to the frame;

[0011] The rotating shaft is used to drive the frame to rotate around the central axis of the rotating shaft, so that one of the grinding wheels comes into contact with the track.

[0012] As a further improvement to this technical solution, the frame includes:

[0013] A connecting ring is disposed outside the rotating shaft, and the connecting ring is fixedly connected to the rotating shaft;

[0014] A first side plate is disposed outside the rotating shaft, and the first side plate is fixedly connected to the connecting ring;

[0015] as well as,

[0016] A second side plate is disposed outside the rotating shaft, and the second side plate is fixedly connected to the connecting ring;

[0017] The first side plate and the second side plate are arranged parallel and symmetrically on both sides of the connecting ring;

[0018] The grinding wheel is rotatably connected between the first side plate and the second side plate.

[0019] As a further improvement to this technical solution, it also includes a drive mechanism and a controller. The drive mechanism is used to drive the rotating shaft to rotate, and the controller is used to control the drive mechanism to rotate the rotating shaft by a preset angle to switch the grinding wheel in contact with the track.

[0020] As a further improvement to this technical solution, the outer wall of the rotating shaft is provided with an equal number of connecting surfaces in the circumferential direction corresponding to the grinding wheel;

[0021] It also includes a support member disposed adjacent to the pivot;

[0022] as well as,

[0023] At least one limiting plate is detachably connected to the connecting surface;

[0024] The posture of the rotating shaft is maintained by fixing the upper limit plate and the support member through different connecting surfaces.

[0025] As a further improvement to this technical solution, each of the grinding wheels is equipped with an independent drive end, which is mounted on the frame.

[0026] As a further improvement to this technical solution, it also includes a power source, a drive shaft, and a meshing structure disposed on the trolley; the drive shaft is rotatably connected to the trolley, and the drive shaft is coaxially disposed with the axle of the grinding wheel currently in the working position; the power source drives the drive shaft to rotate through a transmission component; the meshing structure is used to detachably connect the drive shaft and the axle of the grinding wheel.

[0027] As a further improvement to this technical solution, the engagement structure includes ratchet wheels disposed at both ends of the drive shaft, and a first housing rotatably connected to the outside of the drive shaft; it also includes a second housing, a third housing, an elastic telescopic member, and an engagement head. The second housing is disposed on the side of the first housing away from the drive shaft, and the first housing and the second housing are fixedly connected to form a first cavity. The third housing is disposed on the side of the second housing away from the drive shaft, and the second housing and the third housing are fixedly connected to form a second cavity.

[0028] A first rod is provided in the second cavity. A pawl is rotatably connected to one end of the first rod that passes through the second housing and into the first cavity. A second rod is provided on one side of the pawl. A spring is connected to one end of the second rod that passes through the second housing and into the second cavity. A third rod is connected to the other side of the spring. The third rod is fixedly connected to the third housing. The pawl engages with a ratchet in the first cavity.

[0029] The elastic telescopic member is located on the side of the third housing away from the drive shaft. The engagement head is fixedly connected to the elastic telescopic member. Under the action of the elastic telescopic member, the flared end of the engagement head engages with the protrusion at the end of the wheel axle.

[0030] As a further improvement to this technical solution, the included angle between two adjacent grinding wheels is equal.

[0031] As a further improvement to this technical solution, the included angle between two adjacent grinding wheels is the first included angle, and the included angle between two adjacent connecting surfaces is the second included angle.

[0032] Wherein, the second included angle = 180 - the first included angle.

[0033] As a further improvement to this technical solution, three grinding wheels are provided, namely a first grinding wheel, a second grinding wheel, and a third grinding wheel;

[0034] The second grinding wheel is located on the right side of the frame and is used to grind the right rail head profile surface; the first grinding wheel is located on the left side of the frame and is used to grind the left rail head profile surface; the third grinding wheel is located in the middle of the frame and is used to grind the top surface of the rail head.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] 1. In this segmented grinding track grinding device, multiple grinding wheels with different contact positions with the track are integrated onto a rotatable frame. At any given time, only one grinding wheel is in the working position, in contact with the track and generating frictional heat, while the other two grinding wheels are in a non-working state, dissipating heat naturally in the air. This allows a single grinding machine to perform long-distance operations without interruption, pausing only briefly when switching grinding wheels. This fundamentally overcomes the problems of frequent interruptions caused by overheating of the grinding head and the difficulties in transportation, thereby improving the efficiency of single-machine operation.

[0037] 2. In this segmented grinding track grinding device, the rotating shaft and the frame support are rigidly locked together by clamping plates and limiting plates. This allows the huge impact load during the grinding operation to be directly transferred to the trolley's basic frame, achieving a fundamental improvement in the system's impact resistance and cost optimization. Furthermore, the clamping plates and limiting plates achieve absolute positioning. Each locking action is a precise return to the preset mechanical position, eliminating the inherent following error, drift, and cumulative error in electronic closed-loop control, ensuring the long-term determinism of the multi-grinding wheel profile alignment with the track. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the grinding device of the present invention;

[0039] Figure 2 This is a schematic diagram of the trolley and bearing housing for connecting the rotating shaft according to the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of the grinding component of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the rotating shaft after installation according to the present invention;

[0042] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A;

[0043] Figure 6 This is a schematic diagram of the limiting plate and the transmission shaft of the present invention;

[0044] Figure 7 This is a schematic diagram of the connection structure between the drive shaft and the wheel axle of the present invention;

[0045] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point B;

[0046] Figure 9 This is a schematic diagram of the meshing structure between the drive shaft and the wheel axle of the present invention;

[0047] Figure 10 This is a schematic diagram of the installation structure of the drive shaft of the present invention;

[0048] Figure 11 This is a schematic diagram of the contact structure between the first grinding wheel, the second grinding wheel, and the third grinding wheel of the present invention and the track;

[0049] Figure 12 This is a schematic diagram illustrating the process of switching from the third grinding wheel to the second grinding wheel according to the present invention;

[0050] Figure 13 This is a schematic diagram of the process of fixing or unfixing the second grinding wheel according to the present invention;

[0051] Figure 14 This is a schematic diagram of the process of switching the second grinding wheel to the first grinding wheel according to the present invention.

[0052] The meanings of the labels in the diagram are as follows:

[0053] 1. Cart; 2. Fuel-driven structure; 3. Shaft; 4. Grinding component; 5. Frame; 6. Wheel; 7. Bearing seat; 8. First side plate; 9. Second side plate; 10. Connecting ring; 11. Connecting plate; 12. First grinding wheel; 13. Second grinding wheel; 14. Third grinding wheel; 15. Isolation cover; 16. Clamping plate; 17. Pad plate; 18. Limiting plate; 19. Handle; 20. Support component; 21. Hanging plate; 22. Drive shaft; 23. Axle; 24. Protrusion; 25. First housing; 26. Ratchet; 27. Second housing; 28. First cavity; 29. ​​Third housing; 30. Second cavity; 31. Elastic telescopic component; 32. Engaging head; 33. Pawl; 34. First rod; 35. Second rod; 36. Third rod; 37. Spring; 38. Flared end; 39. Fuel engine; 40. Drive wheel; 41. Belt; 42. Transmission wheel; 43. Track. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Figure 1 The grinding device located on the track is shown. Figure 3 The grinding part 4 is shown, which is capable of rotating about axis a.

[0056] See Figure 1 and Figure 3 A segmented grinding track grinding device, comprising:

[0057] A small cart 1 is able to move on the track;

[0058] A rotating shaft 3 is mounted on the trolley 1 and is perpendicular to the track; wherein the rotating shaft 3 is rotatably connected to the trolley 1.

[0059] as well as,

[0060] Two grinding components 4 are respectively disposed on both sides of the rotating shaft 3; each grinding component 4 includes a frame, which is fixedly connected to the rotating shaft 3; each grinding component 4 also includes at least two grinding wheels, which are disposed on the frame and surround the rotating shaft 3.

[0061] Among them, the rotating shaft 3 is used to drive the frame to rotate around axis a so that a grinding wheel contacts the track.

[0062] Among them, axis a is either the rotating shaft 3 itself or the central axis of the rotating shaft 3.

[0063] Figure 2 The trolley 1 and the bearing housing 7 connecting the rotating shaft 3 are shown. Figure 4 The rotating shaft 3 is shown mounted on the trolley 1.

[0064] First embodiment, see Figure 1 The aforementioned grinding component 4 is installed on the trolley 1, which serves as a carrier. In other words, the trolley 1 is a carrier that can move on the track. The trolley 1 can be driven by a set of wheels driven by an electric motor; or the trolley 1 itself does not have power, but serves as a passively mounted platform, and is moved by an independent tractor or power vehicle through mechanical connections (such as tow hooks or connecting rods); or it can be pushed or pulled by human power.

[0065] The above methods are merely examples of existing track-based vehicles; therefore, other vehicles existing in the prior art that move on tracks have the same meaning as the vehicle 1 in this embodiment. To facilitate understanding of the technical solution, this embodiment discloses one implementation of the vehicle 1, see [link to relevant documentation]. Figure 2 The vehicle 1 includes a frame 5 and a wheel set. In this embodiment, the wheel set consists of four wheels 6, which are respectively installed at the four corners of the frame 5. The principle is the same as that of train wheels in the prior art, so it will not be described in detail here.

[0066] See Figure 2 The frame 5 is constructed from channel steel welded or bolted together. Channel steel is specifically designed or specially installed on the frame 5 to mount multiple bearing seats 7, ensuring that all bearing seats 7 are located on axis a. When the frame 5 travels on a straight section of track, axis a is perpendicular to the track. See also... Figure 4 Multiple bearing housings 7 are connected to a common rotating shaft 3, which enables the rotating shaft 3 to rotate with low resistance, that is, to rotate around axis a.

[0067] See Figure 3The frame includes a first side plate 8 and a second side plate 9. The first side plate 8 and the second side plate 9 are "U" shaped plates of the same shape. It also includes a connecting ring 10. The first side plate 8 and the outer wall of the connecting ring 10 are fixedly connected by a set of connecting plates 11. The second side plate 9 and the outer wall of the connecting ring 10 are fixedly connected by another set of connecting plates 11, so that the first side plate 8 and the second side plate 9 are parallel and symmetrical.

[0068] See Figure 3 Preferably, the "U"-shaped plate has a three-section structure, with the included angles ∠3 and ∠4 between adjacent sides, where ∠3 = ∠4 = 120°. Three grinding wheels are respectively arranged on the three sides between the first side plate 8 and the second side plate 9: the first grinding wheel 12, the second grinding wheel 13, and the third grinding wheel 14. The first grinding wheel 12, the second grinding wheel 13, and the third grinding wheel 14 grind different surfaces of the track. Let point e on axis a be the positioning center; on the plane containing the positioning center e (this plane is perpendicular to axis a), there are a first positioning line b, a second positioning line c, and a third positioning line d. The first positioning line b is used to locate the center of the first grinding wheel 12, the second positioning line c is used to locate the center of the second grinding wheel 13, and the third positioning line d is used to locate the center of the third grinding wheel 14. Therefore, once the radii of the first grinding wheel 12, the second grinding wheel 13, and the third grinding wheel 14 are determined, their installation positions are known. For example, based on the grinding depth of the second grinding wheel 13 (which refers to the shortest distance between the grinding point of the second grinding wheel 13 and the axis a, where the grinding point is located on the grinding surface of the second grinding wheel 13), the radius of the ring containing the center of the second grinding wheel 13 needs to be set to 30cm. Then, the distance between the position of the center of the second grinding wheel 13 on the second positioning line c and the positioning center e is 30cm.

[0069] See Figure 3 The angle between the first positioning line b and the second positioning line c is ∠1 = 60°, and the angle between the second positioning line c and the third positioning line d is ∠2 = 60°, where ∠1 and ∠2 are the first angles.

[0070] The connecting ring 10 is fixedly connected to the rotating shaft 3, which can be fixed by bolts or welding. In this embodiment, the rotating shaft 3 is driven by a motor. The output shaft of the motor (drive mechanism) is coaxial with the rotating shaft 3, and a reduction gearbox is installed between them. The number of rotations of the output shaft is controlled by a controller, thereby rotating the rotating shaft 3 by a fixed angle. For example, in the initial state, the second grinding wheel 13 is located directly below the rotating shaft 3, i.e. Figure 3As shown, grinding should be performed when the second grinding wheel 13 is in contact with the track. To adjust the grinding wheel 12 to be in contact with the track, the shaft 3 needs to be rotated 60° counterclockwise. Assuming the reduction ratio of the gearbox is 30:1, to make the shaft 3 rotate 60°, or 1 / 6 turn, the controller should control the motor output shaft to rotate 5 turns counterclockwise.

[0071] Alternatively, the motor's output shaft is set parallel to the rotating shaft 3, a gear is set outside the rotating shaft 3, and another gear is set on the output shaft. The two gears mesh to drive the rotating shaft 3 to rotate a preset angle.

[0072] Preferably, the aforementioned motor is a servo motor. Its operating principle is based on a field-oriented control (FOC) algorithm. The motor body incorporates a high-resolution encoder (such as a photoelectric encoder or a rotary transformer) to provide real-time feedback of the rotor position to the controller. The controller (usually a servo drive) compares the target position (i.e., the converted number of motor shaft revolutions) with the feedback position, identifying the position deviation. This deviation is then adjusted through internal speed and current loops (torque loops), outputting a three-phase variable frequency and voltage current to drive the motor until the position deviation is eliminated. For forward and reverse rotation control, the servo drive can achieve this by changing the direction of the current vector or adjusting the sign of the position command.

[0073] Preferably, three isolation covers 15 are respectively provided between the first side plate 8 and the second side plate 9 corresponding to the first grinding wheel 12, the second grinding wheel 13 and the third grinding wheel 14, the purpose of which is to block the splashing of debris generated during grinding.

[0074] In this embodiment, three drive ends (motors) are respectively set on the frame corresponding to the first grinding wheel 12, the second grinding wheel 13 and the third grinding wheel 14, and rotate synchronously with the frame. The drive ends independently drive the grinding wheels to grind the track.

[0075] Figure 5 The three connecting surfaces on the rotating shaft 3 are shown, namely the first connecting surface 3a, the second connecting surface 3b, and the third connecting surface 3c. Figure 6 A limiting plate 18 is shown that fixes the rotating shaft 3.

[0076] Second embodiment, see Figure 2 The vehicle 1 includes a frame 5 and a wheel set. In this embodiment, the wheel set consists of four wheels 6, which are respectively installed at the four corners of the frame 5. The principle is the same as that of train wheels in the prior art, so it will not be described in detail here.

[0077] See Figure 2 The frame 5 is constructed from channel steel welded or bolted together. Channel steel is specifically designed or specially installed on the frame 5 to mount multiple bearing seats 7, ensuring that all bearing seats 7 are located on axis a. When the frame 5 travels on a straight section of track, axis a is perpendicular to the track. See also... Figure 4 Multiple bearing housings 7 are connected to a common rotating shaft 3, which enables the rotating shaft 3 to rotate with low resistance, that is, to rotate around axis a.

[0078] See Figure 5 The first connecting surface 3a, the second connecting surface 3b, and the third connecting surface 3c are respectively located at different positions on the outer wall of the rotating shaft 3. Specifically, the included angle ∠5 between the first connecting surface 3a and the second connecting surface 3b is 120°, and the included angle ∠6 between the second connecting surface 3b and the third connecting surface 3c is 120°. Each of the first connecting surface 3a, the second connecting surface 3b, and the third connecting surface 3c is provided with a connecting screw hole, on which a limiting plate 18 can be connected. The limiting plate 18 is detachable from the connecting surface by bolts and connecting to the screw holes.

[0079] Preferably, the first connecting surface 3a, the second connecting surface 3b, and the third connecting surface 3c are on the same annular path.

[0080] Among them, ∠5 and ∠6 are the second included angle;

[0081] Wherein, the second included angle = 180 - the first included angle.

[0082] See Figure 6 A support member 20 is provided on the frame 5 near the pivot 3. Preferably, the support member 20 is a channel steel fixedly connected to the frame 5. A pad 17 is provided on the support member 20, and the pad 17 is provided corresponding to the limiting plate 18. When the limiting plate 18 rests on the pad 17, the limiting plate 18 is limited by a clamping plate 16 provided on the pad 17, so that the pivot 3 can maintain its current posture. Figure 6 As shown, when the second grinding wheel 13 is located directly below the rotating shaft and contacts the track, the limiting plate 18 connected to the second connecting surface 3b is fixed by the clamping plate 16, so that the rotating shaft 3 does not rotate, ensuring that the second grinding wheel 13 can stably contact the track.

[0083] When the clamping plate 16 is fixed to the limiting plate 18 on the first connecting surface 3a, the third grinding wheel 14 can stably contact the track; when the clamping plate 16 is fixed to the limiting plate 18 on the third connecting surface 3c, the first grinding wheel 12 can stably contact the track.

[0084] The clamping plate 16 is detachably connected to the pad 17 by bolts.

[0085] See Figure 6 Since this embodiment requires manual lifting or pressing of the limiting plate 18, a handle 19 for easy gripping is provided at the end of the limiting plate 18.

[0086] Figure 11The contact methods of the first grinding wheel 12, the second grinding wheel 13, and the third grinding wheel 14 with the track 43 are shown. Figure 12 The process of switching from the third grinding wheel 14 to the second grinding wheel 13 is shown. Figure 13 The process of fixing or unfixing the second grinding wheel 13 is shown. Figure 14 The process of switching from the second grinding wheel 13 to the first grinding wheel 12 is shown.

[0087] See Figure 11 The second grinding wheel 13 is located on the right side of the frame and is used to grind the right rail head contour surface; the first grinding wheel 12 is located on the left side of the frame and is used to grind the left rail head contour surface; the third grinding wheel 14 is located in the middle of the frame and is used to grind the top surface of the rail head.

[0088] Implementation process:

[0089] The first polishing of the first leg of the journey (from point A to point B), see [link / reference]. Figure 12 In the left figure, the third positioning line d is in a vertical state, so the third grinding wheel 14 is in contact with the top surface of the rail head. At this time, the angle between the first connecting surface 3a (in the figure, the position of the first connecting surface 3a is indicated by a dashed line for convenience) and the third positioning line d is 90°. At this time, the limiting plate 18 connected to the first connecting surface 3a is in contact with the pad 17 and then fixed by the clamping plate 16. After fixing, the third grinding wheel 14 can be driven to rotate to grind the top surface of the rail head.

[0090] The second refinement of the first leg of the journey (from point B to point A), see [link / reference]. Figure 12 As shown in the right figure, step (1): first remove the clamping plate 16; step (2): then slowly lift the limiting plate 18, so that the second connecting surface 3b rotates counterclockwise by 60°. At this time, the second positioning line c is in a vertical state (the angle between it and the second connecting surface 3b is 90°); install a limiting plate 18 on the second connecting surface 3b, and the limiting plate 18 contacts the pad 17. See [reference needed]. Figure 13 Step (3): Then fix it with clamp 16. After fixing, the second grinding wheel 13 can be driven to rotate to grind the right rail head contour surface.

[0091] The third refinement of the first leg of the journey (from point A to point B), see [link / reference]. Figure 13 Step (4): First remove the clamp 16, see Figure 14 Left figure, step (5): Rotate the limiting plate 18 counterclockwise to rotate the third connecting surface 3c by 60°. See Figure 14 In the right figure, the first positioning line b is in a vertical state. Then, a limiting plate 18 is installed on the third connecting surface 3c. The limiting plate 18 contacts the pad 17 and is fixed by the clamping plate 16. After fixing, the first grinding wheel 12 can be driven to rotate to grind the left rail head contour surface.

[0092] After the first stage of the process is refined three times, the next stage will be refined.

[0093] Another implementation process:

[0094] Three small carts, designated A, B, and C, travel in the same direction. In the first segment, the first grinding wheel 12 of cart A is active, the second grinding wheel 13 of cart B is active, and the third grinding wheel 14 of cart C is active. In the second segment, the second grinding wheel 13 of cart A is active, the third grinding wheel 14 of cart B is active, and the first grinding wheel 12 of cart C is active. In the third segment, the third grinding wheel 14 of cart A is active, the first grinding wheel 12 of cart B is active, and the second grinding wheel 13 of cart C is active. The fourth segment is the same as the first segment, and this cycle continues.

[0095] Figure 6 The drive shaft 22 that drives the grinding wheel to rotate is also shown. Figure 7 The connection structure between the drive shaft 22 and the wheel axle 23 is shown. Figure 8 A pawl that engages with a ratchet is shown. Figure 9 The meshing structure between the drive shaft 22 and the wheel axle 23 is shown. Figure 10 The mounting method of drive shaft 22 is shown.

[0096] Third embodiment, see Figure 2 The vehicle 1 includes a frame 5 and a wheel set. In this embodiment, the wheel set consists of four wheels 6, which are respectively installed at the four corners of the frame 5. The principle is the same as that of train wheels in the prior art, so it will not be described in detail here.

[0097] See Figure 2 The frame 5 is constructed from channel steel welded or bolted together. Channel steel is specifically designed or specially installed on the frame 5 to mount multiple bearing seats 7, ensuring that all bearing seats 7 are located on axis a. When the frame 5 travels on a straight section of track, axis a is perpendicular to the track. See also... Figure 4 Multiple bearing housings 7 are connected to a common rotating shaft 3, which enables the rotating shaft 3 to rotate with low resistance, that is, to rotate around axis a.

[0098] See Figure 3 The frame includes a first side plate 8 and a second side plate 9, both of which are U-shaped plates. It also includes a connecting ring 10. The first side plate 8 is fixedly connected to the outer wall of the connecting ring 10 via a set of connecting plates 11, and the second side plate 9 is fixedly connected to the outer wall of the connecting ring 10 via another set of connecting plates 11, making the first side plate 8 and the second side plate 9 parallel and symmetrical. Three grinding wheels are respectively provided along the three corresponding sides of the first side plate 8 and the second side plate 9: a first grinding wheel 12, a second grinding wheel 13, and a third grinding wheel 14.

[0099] In this embodiment, the centers of the first grinding wheel 12, the second grinding wheel 13, and the third grinding wheel 14 are located on the same ring line.

[0100] Taking the second grinding wheel 13 as an example, see Figure 7 A wheel axle 23 is provided at the center of the second grinding wheel 13, parallel to axis a. The wheel axle 23 is rotatably connected to the first side plate 8 and the second side plate 9. (See Figure 1) Figure 6 Directly below the pivot 3, a drive shaft 22 is located between the two frames, and the drive shaft 22 is rotatably connected to the frame 5. Preferably, two channel steels parallel to the pivot 3 are arranged on both sides of the pivot 3 on the frame 5 (in the second embodiment, one of the channel steels can be selected as the support member 20). The bottom of the two channel steels is fixedly connected to the hanging plate 21, the drive shaft 22 is rotatably connected to the hanging plate 21, and the drive shaft 22 is coaxially arranged with the wheel axle 23.

[0101] See Figure 7 Both ends of the drive shaft 22 are fixedly connected to ratchet 26. A first housing 25 is rotatably connected to the drive shaft 22. A second housing 27 is fixedly connected to the side of the first housing 25 away from the drive shaft 22. A first cavity 28 is formed between the first housing 25 and the second housing 27. The ratchet 26 is located in the first cavity 28. A third housing 29 is fixedly connected to the side of the second housing 27 away from the drive shaft 22. A second cavity 30 is formed between the second housing 27 and the third housing 29.

[0102] The second cavity 30 contains a first rod 34, with a pawl 33 rotatably connected to one end of the first rod 34 that passes through the second housing 27 into the first cavity 28. A second rod 35 is located on one side of the pawl 33, and a spring 37 is connected to one end of the second rod 35 that passes through the second housing 27 into the second cavity 30. A third rod 36 is connected to the other side of the spring 37, and the third rod 36 is fixedly connected to the third housing 29. In other words, if multiple pawls 33 are provided, they are arranged around and engage with the ratchet 26 within the first cavity 28, while the spring 37 is located within the second cavity 30.

[0103] See Figure 7 The third housing 29, on the side away from the drive shaft 22, is provided with an elastic telescopic member 31. The elastic telescopic member 31 is a combination of a telescopic rod and an elastic element commonly known to those skilled in the art, and therefore will not be described in detail here. The end of the elastic telescopic member 31 is provided with an engaging head 32, and the end of the wheel axle 23 is provided with a protrusion 24. Under the action of the elastic telescopic member 31, the engaging head 32 engages with the protrusion 24. (See [reference needed]). Figure 9 The bite head 32 is provided with a flare 38 that is adapted to the protrusion 24, and the bite head 32 bites with the protrusion 24 through the flare 38.

[0104] See Figure 1 and Figure 10 A fuel-driven structure 2 (i.e., a power source) is provided on the frame 5, which includes a fuel engine 39, a drive wheel 40 located at the output end of the fuel engine 39, a drive wheel 42 located outside the drive shaft 22, and a belt 41. The belt 41 connects the drive wheel 42 to the drive wheel 40, thereby driving the drive wheel 42 to rotate through the drive wheel 40, which in turn drives the drive shaft 22 to rotate, and then drives the second grinding wheel 13 to rotate.

[0105] Assuming it needs to switch to the first grinding wheel 12, first pull the engagement head 32 towards the side where the drive shaft 22 is located, so that the flare 38 disengages from the protrusion 24. Then rotate the frame so that the first grinding wheel 12 is directly below the rotating shaft 3. At this time, the wheel axle 23 of the first grinding wheel 12 is coaxial with the drive shaft 22. If the flare 38 matches the protrusion 24 of the wheel axle 23, slowly release the engagement head 32. Under the action of the elastic force, the flare 38 engages with the protrusion 24 of the wheel axle 23. If the flare 38 does not match the protrusion 24 of the wheel axle 23, then it is necessary to rotate the engagement head 32 counterclockwise (when rotating counterclockwise, the pawl 33 can rotate relative to the ratchet 26) so that the flare 38 of the engagement head 32 matches the protrusion 24. Then slowly release the engagement head 32. Under the action of the elastic force, the flare 38 engages with the protrusion 24 of the wheel axle 23. Once engaged, the drive shaft 22 rotates clockwise under the drive of the fuel engine 39. At this time, the ratchet 26 engages with the pawl 33, so the third housing 29 rotates synchronously with the drive shaft 22. Then the engagement head 32 drives the wheel axle 23 and the first grinding wheel 12 to rotate.

[0106] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A segmented grinding track grinding device, comprising a trolley (1), characterized in that, Also includes: A rotating shaft (3) is disposed on the trolley (1), and the rotating shaft (3) is rotatably connected to the trolley (1); as well as, Two grinding components (4) are respectively disposed on both sides of the rotating shaft (3); each grinding component (4) includes a frame, which is fixedly connected to the rotating shaft (3); each grinding component (4) also includes at least two grinding wheels, and each grinding wheel has a different contact position with the track. The grinding wheels are arranged around the rotating shaft (3) and are rotatably connected to the frame. The rotating shaft (3) is used to drive the frame to rotate around the central axis of the rotating shaft (3), so that one of the grinding wheels contacts the track; It also includes a power source, a drive shaft (22), and a meshing structure disposed on the trolley (1); the drive shaft (22) is rotatably connected to the trolley (1), and the drive shaft (22) is coaxially disposed with the axle (23) of the grinding wheel currently in the working position; the power source drives the drive shaft (22) to rotate through a transmission component; the meshing structure is used to detachably connect the drive shaft (22) and the axle (23) of the grinding wheel. The engagement structure includes ratchet (26) disposed at both ends of the drive shaft (22), and a first housing (25) rotatably connected to the outside of the drive shaft (22); it also includes a second housing (27), a third housing (29), an elastic telescopic member (31), and an engagement head (32). The second housing (27) is disposed on the side of the first housing (25) away from the drive shaft (22). The first housing (25) and the second housing (27) are fixedly connected to form a first cavity (28). The third housing (29) is disposed on the side of the second housing (27) away from the drive shaft (22). The second housing (27) and the third housing (29) are fixedly connected to form a second cavity (30). A first rod (34) is provided in the second cavity (30). A pawl (33) is rotatably connected to one end of the first rod (34) that passes through the second housing (27) to the first cavity (28). A second rod (35) is provided on one side of the pawl (33). A spring (37) is connected to one end of the second rod (35) that passes through the second housing (27) to the second cavity (30). A third rod (36) is connected to the other side of the spring (37). The third rod (36) is fixedly connected to the third housing (29). The pawl (33) meshes with a ratchet (26) in the first cavity (28). The elastic telescopic member (31) is located on the side of the third housing (29) away from the drive shaft (22). The engagement head (32) is fixedly connected to the elastic telescopic member (31). Under the action of the elastic telescopic member (31), the flared end (38) on the engagement head (32) engages with the protrusion (24) at the end of the wheel axle (23).

2. The track grinding device for segmented grinding according to claim 1, characterized in that, The frame includes: A connecting ring (10) is disposed outside the rotating shaft (3), and the connecting ring (10) is fixedly connected to the rotating shaft (3); A first side plate (8) is disposed outside the rotating shaft (3), and the first side plate (8) is fixedly connected to the connecting ring (10); as well as, A second side plate (9) is disposed outside the rotating shaft (3), and the second side plate (9) is fixedly connected to the connecting ring (10); The first side plate (8) and the second side plate (9) are arranged parallel and symmetrically on both sides of the connecting ring (10); The grinding wheel is rotatably connected between the first side plate (8) and the second side plate (9).

3. The track grinding device for segmented grinding according to claim 1, characterized in that, It also includes a drive mechanism and a controller. The drive mechanism is used to drive the rotating shaft (3) to rotate, and the controller is used to control the drive mechanism to rotate the rotating shaft (3) by a preset angle to switch the grinding wheel in contact with the track.

4. The track grinding device for segmented grinding according to claim 1, characterized in that: The outer wall of the rotating shaft (3) has an equal number of connecting surfaces in the circumferential direction corresponding to the grinding wheel; It also includes a support member (20) disposed adjacent to the pivot (3); as well as, At least one limiting plate (18) is detachably connected to the connecting surface; The posture of the rotating shaft (3) is maintained by fixing the upper limit plate (18) and the support member (20) through different connecting surfaces.

5. The track grinding device for segmented grinding according to claim 3 or 4, characterized in that: Each of the grinding wheels is equipped with an independent drive end, which is mounted on the frame.

6. The track grinding device for segmented grinding according to claim 4, characterized in that: The included angle between any two adjacent grinding wheels is equal.

7. The track grinding device for segmented grinding according to claim 6, characterized in that: The included angle between two adjacent grinding wheels is the first included angle, and the included angle between two adjacent connecting surfaces is the second included angle; Wherein, the second included angle = 180 - the first included angle.

8. The track grinding device for segmented grinding according to claim 1, characterized in that: The grinding wheel is provided in three parts, namely the first grinding wheel (12), the second grinding wheel (13) and the third grinding wheel (14). Among them, the second grinding wheel (13) is located on the right side of the frame and is used to grind the right rail head contour surface; the first grinding wheel (12) is located on the left side of the frame and is used to grind the left rail head contour surface; the third grinding wheel (14) is located in the middle of the frame and is used to grind the top surface of the rail head.

Images