A rail grinding vehicle, a rail-aligning mechanism, and a rail-aligning method

Abstract

This invention discloses a rail grinding vehicle, a rail-aligning mechanism, and a rail-aligning method. The rail-aligning mechanism includes a fixed mounting base; a transverse frame, the top of which is movably connected to the fixed mounting base and is vertically arranged; a rail-aligning wheel assembly for traveling along the rail, located at the bottom of the transverse frame; a transverse drive assembly, with its fixed end located at the fixed mounting base and its output end laterally located on the transverse frame, to drive the transverse frame to reciprocate laterally relative to the fixed mounting base; a transverse position adjustment assembly, with its fixed end located at a transition mounting base and its output end laterally located on the rail-aligning wheel assembly, to drive the rail-aligning wheel assembly to reciprocate laterally; and a vertical drive assembly, with its fixed end located at the transverse frame and its output end vertically located on the rail-aligning wheel assembly, to drive the rail-aligning wheel assembly to move vertically relative to the transverse frame. This application can improve the accuracy and quality of online rail grinding and maintenance.

Description

Technical Field

[0001] This invention relates to the field of railway maintenance equipment technology, and more specifically, to a rail-aligning mechanism. Furthermore, this invention also relates to a rail grinding vehicle including the aforementioned rail-aligning mechanism, and a rail-aligning method applied to the aforementioned rail grinding vehicle. Background Technology

[0002] Steel rails bear the enormous pressure and impact of high-speed, heavy-load trains for a long time, and their surfaces will develop defects such as fish-scale patterns, thick edges, wear and scratches. These defects come into contact with the train's wheels and rails, which will further damage the wheels and rails. If not treated in time, they may even affect the safety of train operation.

[0003] Currently, rail grinding trolleys are the core equipment for grinding rails. A rail grinding trolley consists of several grinding units, each equipped with a grinding mechanism for grinding the rails. By adjusting the deflection angle of the grinding motor on the grinding mechanism, different areas of the rail surface are ground. Typically, the grinding trolley is supported on the rail by four traveling wheels. Because the relative position of the traveling wheels and the trolley frame is fixed, the frame will shift laterally as the curve changes when traversing curves. Simultaneously, since the grinding unit lacks a rail-aligning mechanism, the lateral position of the grinding wheel relative to the rail will also change, thus affecting the grinding accuracy and quality.

[0004] In conclusion, how to provide a rail-aligning mechanism that can improve the precision and quality of rail grinding is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a rail-aligning mechanism that can improve the grinding accuracy and grinding quality of rails.

[0006] Another object of the present invention is to provide a rail grinding vehicle including the above-mentioned rail-aligning mechanism, and a rail-aligning method applied to the above-mentioned rail grinding vehicle.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A rail-aligning mechanism, comprising:

[0009] Fixed mounting base;

[0010] A transverse frame, the top of which is movably connected to the fixed mounting base, and the transverse frame is arranged vertically;

[0011] A guide wheel assembly for traveling along the rail, the guide wheel assembly being located at the bottom of the transverse frame;

[0012] A transverse drive assembly, wherein the fixed end of the transverse drive assembly is disposed on the fixed mounting base and the output end is disposed on the transverse frame in a transverse direction, so as to drive the transverse frame to reciprocate in a transverse direction relative to the fixed mounting base.

[0013] A lateral position adjustment component is provided, wherein a transition mounting seat is provided between the guide wheel component and the lateral moving frame, near the lateral position adjustment component, the fixed end of the lateral position adjustment component is provided on the transition mounting seat, and the output end is provided on the guide wheel component in the lateral direction, so as to drive the guide wheel component to move back and forth in the lateral direction relative to the lateral moving frame.

[0014] The lateral position adjustment component pushes the guide wheel assembly to move laterally relative to the lateral frame. After reaching the set position, the lateral position adjustment component locks laterally, and the guide wheel assembly cannot move laterally, thus locking the lateral position of the lateral frame relative to the guide wheel assembly. The lateral drive component drives the lateral frame and the guide wheel assembly connected and locked thereto to move laterally, so that the guide wheel assembly contacts the side of the rail head, thereby giving the grinding wheel set in the lateral frame and the rail a fixed lateral position.

[0015] By adjusting the lateral position between the rail guide wheel assembly and the transverse frame using the lateral position adjustment assembly, the grinding wheel inside the transverse frame can be used to grind the rail at different lateral positions.

[0016] The guide wheel assembly is movably mounted on the transition mounting base;

[0017] A vertical movement drive assembly, wherein the fixed end of the vertical movement drive assembly is disposed on the horizontal movement frame and the output end is disposed vertically on the transition mounting base, so as to drive the guide wheel assembly to move vertically relative to the horizontal movement frame;

[0018] The guide wheel assembly includes a bearing housing and a guide wheel. The guide wheel is rotatably disposed at the bottom of the bearing housing. The top of the bearing housing is sleeved on the first guide rod of the transition mounting seat, and the first guide rod is arranged laterally.

[0019] The transverse frame is vertically movably connected to the transition mounting base. A second guide rod is provided on the transverse frame near the top right side of the transition mounting base, and the second guide rod is vertically arranged. The top right side of the transition mounting base is sleeved on the second guide rod.

[0020] The second guide rod is mounted on the transverse frame via a guide rod mounting seat;

[0021] Both the first guide rod and the second guide rod are splined shafts, and the top of the bearing housing and the top of the right side of the transition mounting seat are provided with ball spline sleeves that match the splined shafts.

[0022] Preferably, the right side of the transition mounting base, located at the first guide rod, has a hollow structure.

[0023] A rail grinding vehicle includes several grinding units, each grinding unit including a rail-aligning mechanism, which is any of the rail-aligning mechanisms described above. The grinding unit also includes a grinding device, which includes a grinding wheel rotatably disposed within the transverse frame.

[0024] A rail alignment method, applied to the aforementioned rail grinding machine, includes:

[0025] When the rail grinding vehicle moves longitudinally along the rail to perform grinding operations, the transverse drive assembly is controlled to drive the transverse frame to move laterally reciprocally relative to the fixed mounting seat, which in turn drives the rail wheel assembly to move laterally and contact the inner side of the rail, so that the grinding wheel set in the transverse frame has a fixed transverse position with the rail, thereby ensuring that the grinding wheel is always in the set rail grinding position for grinding operations.

[0026] When it is necessary to change the lateral grinding position of the rail, the lateral position adjustment component is controlled to drive the rail guide wheel component to move back and forth in the lateral direction relative to the lateral moving frame, thereby adjusting the lateral position between the rail guide wheel component and the grinding wheel in the lateral moving frame, so as to realize the grinding operation of the grinding wheel at different lateral positions on the rail head.

[0027] Compared to the aforementioned background technology, the present invention provides a rail-aligning mechanism. When the rail grinding vehicle passes through a curved section of rail, the grinding device inside the transverse frame and the side rail-aligning wheel assembly are laterally offset relative to the rail. Since the fixed mounting base is fixed on the grinding unit of the rail grinding vehicle, the transverse frame is driven to reciprocate laterally relative to the fixed mounting base by the transverse drive assembly, which drives the rail-aligning wheel assembly to move laterally and contact the inner surface of the rail. This ensures that the rail-aligning wheel assembly is always in contact with the inner surface of the rail during its movement along the rail, thereby ensuring that the grinding wheel in the grinding device is always grinding the rail at the set rail grinding position. Furthermore, during the grinding operation, when adjusting the deflection angle of the grinding wheel, the output end of the transverse position adjustment assembly is simultaneously controlled to extend or retract laterally to adjust the different transverse positions of the grinding wheel on the rail head. After the grinding wheel has been grinding for a certain period of time, the vertical distance between the grinding wheel and the rail surface decreases. Therefore, this application provides a rail-aligning mechanism that ensures that during the rail grinding process, the roller assembly is always in contact with the inner surface of the rail, and the grinding wheel is always grinding the rail at the set rail grinding position, thereby improving the rail grinding accuracy and grinding quality.

[0028] The rail grinding vehicle comprises multiple grinding units. When the vehicle grinds along the rail, the grinding device in each unit can grind the rail regardless of its deflection angle, avoiding grinding dead zones. Furthermore, the coordinated action of multiple grinding units results in high grinding precision and quality, as well as excellent grinding efficiency. Additionally, the rail-aligning method provided in this application, by controlling the extension and retraction of the lateral drive assembly, lateral position adjustment assembly, and vertical drive assembly, ensures that the rail-aligning wheel assembly remains in constant contact with the inner surface of the rail, preventing the grinding device from deviating from the set rail grinding position, thereby improving the grinding precision and quality. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a rail-aligning mechanism provided by the present invention.

[0031] In the picture:

[0032] 1 is a fixed mounting base, 2 is a transverse frame, 3 is a transverse position adjustment component, 4 is a vertical movement drive component, 5 is a transition mounting base, 6 is a bearing housing, 7 is a guide wheel, 8 is a first guide rod, 9 is a second guide rod, 10 is a guide rod mounting base, 11 is a connecting pin, 12 is a transverse movement drive component, and 13 is a rail. Detailed Implementation

[0033] 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.

[0034] The core of this invention is to provide a rail-aligning mechanism that can improve the precision and quality of rail grinding.

[0035] Another core aspect of this invention is to provide a rail grinding vehicle including the aforementioned rail-aligning mechanism, and a rail-aligning method applied to the aforementioned rail grinding vehicle.

[0036] It should be noted that, in the following text, "lateral" refers to the direction perpendicular to the extension direction of the rail and located within the rail surface, while "vertical" refers to the direction perpendicular to the rail surface.

[0037] Please refer to Figure 1 This application provides a rail-aligning mechanism, including a fixed mounting base 1, a transverse frame 2, a transverse drive assembly 12, a transverse position adjustment assembly 3, a vertical drive assembly 4, and a rail-aligning wheel assembly for traveling along a rail 13. The fixed mounting base 1 is mounted on the grinding unit of a rail grinding vehicle. The top of the transverse frame 2 is connected to the fixed mounting base 1, and the transverse frame 2 is vertically arranged. The rail-aligning wheel assembly is used to travel along the rail 13 and is located at the bottom of the transverse frame 2. The transverse drive assembly 12 is fixed... The fixed end is located on the fixed mounting base 1, and the output end is located on the transverse moving frame 2 in a horizontal direction, so as to drive the transverse moving frame 2 to move back and forth in a horizontal direction relative to the fixed mounting base 1; the fixed end of the transverse position adjustment component 3 is located on the transverse moving frame 2, and the output end is located on the guide wheel component in a horizontal direction, so as to drive the guide wheel component to move back and forth in a horizontal direction relative to the transverse moving frame 2; the fixed end of the vertical movement drive component 4 is located on the transverse moving frame 2, and the output end is located on the transition mounting base 5 in a vertical direction, so as to drive the guide wheel component to move in a vertical direction relative to the transverse moving frame 2.

[0038] It should be noted that the top of the transverse frame 2 is fitted onto the fixed mounting base 1 via a guide sleeve, so that the top of the transverse frame 2 is movably connected to the fixed mounting base 1. The transverse frame 2 is equipped with a grinding device, which includes a grinding wheel for grinding the rail. One side of the transverse frame 2 is connected to the rail guide wheel assembly. The transverse frame 2 and the fixed mounting base 1 are set perpendicular to each other. Correspondingly, the fixed mounting base 1 is parallel to the rail 13, and the transverse frame 2 is perpendicular to the rail surface. The transverse drive assembly 12 is set along the extension direction perpendicular to the rail 13 and is located within the rail surface, so that the transverse drive assembly 12 can move laterally along the rail 13 to drive the transverse frame 2 to move laterally back and forth relative to the fixed mounting base 1, thereby driving the rail guide wheel assembly to contact the inner side of the rail. The vertical drive assembly 4 is set vertically. Therefore, the lateral position adjustment component 3 pushes the guide wheel component to move laterally relative to the transverse frame 2. After reaching the set position, the lateral position adjustment component 3 locks laterally, and the guide wheel component cannot move laterally, thus locking the transverse frame 2 relative to the guide wheel component. The transverse drive component 12 drives the transverse frame 2 and the guide wheel component connected and locked thereto to move laterally, so that the guide wheel component contacts the side of the rail head, thereby giving the grinding wheel set in the transverse frame 2 a fixed lateral position with the rail. By adjusting the lateral position between the guide wheel component and the transverse frame 2 through the lateral position adjustment component 3, the grinding wheel in the transverse frame 2 can be used to grind the rail at different lateral positions.

[0039] When the above structure is in use, when the rail grinding vehicle passes through a curved section of rail, the grinding wheel inside the transverse frame 2 and the side rail-mounting wheel assembly shift laterally relative to the rail. Since the fixed mounting base 1 is fixed on the grinding unit of the rail grinding vehicle, the transverse drive assembly 12 drives the transverse frame 2 to move laterally reciprocally relative to the fixed mounting base 1, causing the rail-mounting wheel assembly to move laterally and contact the inner surface of the rail. This ensures that the rail-mounting wheel assembly remains in contact with the inner surface of the rail throughout its movement along the rail, thus keeping the grinding wheel always within the set rail position. The rail is ground at the designated grinding position. Furthermore, during the grinding operation, when adjusting the deflection angle of the grinding wheel, the output end of the lateral position adjustment component 3 is simultaneously extended laterally to ensure that the rail-mounting wheel assembly remains in contact with the inner surface of the rail, preventing the grinding wheel from deviating from the set grinding position. After grinding for a certain period, the vertical distance between the grinding wheel and the rail surface decreases. The vertical movement drive component 4 then drives the rail-mounting wheel assembly to move relative to the lateral movement frame 2, similarly preventing the grinding wheel from deviating from the set grinding position. Therefore, this application provides a rail-mounting mechanism that ensures that during the rail grinding process, the rail-mounting wheel assembly remains in contact with the inner surface of the rail, and the grinding wheel remains in the set grinding position, thereby improving the grinding accuracy and quality.

[0040] Optionally, the type of the transverse drive assembly 12 in this application is not unique; a pneumatic cylinder or a hydraulic cylinder may also be used, as long as it can drive the transverse frame 2 to move laterally reciprocally relative to the fixed mounting base 1.

[0041] Based on the above embodiments, in order to ensure that the guide wheel assembly is stably installed on the transverse frame 2, a transition mounting seat 5 is provided between the guide wheel assembly and the transverse frame 2. The transition mounting seat 5 is located close to the guide wheel assembly, and the guide wheel assembly is movably mounted on the transition mounting seat 5. The transverse position adjustment component 3 is an electric cylinder, which is arranged transversely. One end of the electric cylinder is located in the transition mounting seat 5, and the other end is located on the guide wheel assembly to drive the guide wheel assembly to move reciprocally in the transverse direction. By adopting the above arrangement, the overall stability of the guide mechanism can be improved.

[0042] Optionally, the types of the lateral position adjustment component 3 and the lateral movement drive component 12 in this application are not unique. A cylinder or a hydraulic cylinder can also be used, as long as it can drive the guide wheel component to move reciprocally in the lateral direction relative to the lateral movement frame 2.

[0043] Furthermore, the guide wheel assembly includes a bearing housing 6, a guide wheel 7, and a connecting pin 11. The right side of the transition mounting base 5 is provided with a first guide rod 8 arranged laterally. The top of the bearing housing 6 is movably sleeved on the first guide rod 8 to provide guidance, ensuring that the guide wheel 7 moves laterally and that its wheel rim contacts the inner side of the rail. The guide wheel 7 is rotatably mounted on the bearing housing 6 via the connecting pin 11.

[0044] Based on the above embodiments, the fixed end of the vertical movement drive component 4 is located on the horizontal movement frame 2, and the output end is located vertically on the transition mounting base 5, and the horizontal movement frame 2 and the transition mounting base 5 are movably connected vertically.

[0045] Specifically, the vertical movement drive assembly 4 is a cylinder, which is vertically positioned. One end of the cylinder is mounted on the horizontal movement frame 2, and the other end is positioned on the top left side of the transition mounting seat 5. A second guide rod 9 is located on the top right side of the horizontal movement frame 2, near the transition mounting seat 5, and is vertically positioned. The top right side of the transition mounting seat 5 is fitted onto the second guide rod 9. Therefore, after the grinding device has been grinding for a certain period of time, the vertical distance between the grinding device and the rail surface of the rail 13 decreases, and the flange of the rail wheel 7 abuts against the inner side of the rail. The vertical movement drive assembly 4 drives the rail-adhering mechanism to move downward. At the same time, the horizontal movement frame 2 moves downward relative to the transition mounting seat 5 via the second guide rod 9, ensuring that the grinding wheel is always in contact with the rail surface of the rail 13, further improving the grinding accuracy and quality of the rail 13.

[0046] Optionally, the type of vertical movement drive component 4 in this application is not unique; an electric cylinder or a hydraulic cylinder may also be selected.

[0047] Based on the above embodiment, the second guide rod 9 is mounted on the transverse frame 2 via the guide rod mounting seat 10. Both the upper and lower ends of the guide rod mounting seat 10 are provided with baffles. Correspondingly, the top of the transition mounting seat 5, which is sleeved on the second guide rod 9, is positioned between the two baffles, so that the baffles can limit the vertical movement of the transition mounting seat 5, thereby limiting the vertical movement of the grinding device.

[0048] Optionally, both the first guide rod 8 and the second guide rod 9 are made of splined shafts with high load-bearing capacity. The top of the bearing housing 6 and the top of the right side of the transition mounting seat 5 are provided with ball spline sleeves that match the splined shafts to limit the degree of freedom of the rail-mounting mechanism and enhance the structural stability of the rail-mounting mechanism.

[0049] Alternatively, the right side of the transition mounting base 5, located at the first guide rod 8, may be hollow to reduce structural weight and save material costs.

[0050] In addition to the main structure and usage of the rail-aligning mechanism provided in the above embodiments, this application also provides a rail grinding vehicle, including several grinding units. Each grinding unit includes a rail-aligning mechanism, which is the rail-aligning mechanism described above. The grinding unit also includes a grinding device, which is rotatably disposed within the transverse frame 2.

[0051] It should be noted that the rail-aligning mechanism is located on one side of the transverse frame 2, and a grinding device is installed inside the transverse frame 2. The main core components of the grinding device are the grinding motor and the grinding wheel, which are used to grind the defects on the surface of the rail 13. The other specific structural settings of the grinding device can be referred to the existing technology, and will not be elaborated in this article.

[0052] In addition to the main structure and usage of the rail-aligning mechanism provided in the above embodiments, this application also provides a rail-aligning method applied to the above-mentioned rail grinding machine, including:

[0053] When the rail grinding vehicle moves longitudinally along the rail to perform grinding operations, the control transverse drive component drives the transverse frame to move laterally back and forth relative to the fixed mounting seat, which in turn drives the rail wheel component to move laterally and contact the inner side of the rail, so that the grinding wheel set in the transverse frame has a fixed transverse position with the rail, thereby ensuring that the grinding wheel is always in the set rail grinding position for grinding operations.

[0054] When it is necessary to change the lateral grinding position of the rail, the guide wheel assembly is driven to move back and forth in the lateral direction relative to the transverse frame by controlling the lateral position adjustment component, thereby adjusting the lateral position between the guide wheel assembly and the grinding wheel in the transverse frame, so as to realize the grinding operation of the grinding wheel at different lateral positions on the rail head.

[0055] Specifically, when the rail grinding vehicle passes through a curved section of rail, the control lateral movement drive component drives the lateral movement frame to reciprocate laterally relative to the fixed mounting base, causing the rail guide wheel assembly to move laterally and always maintain contact with the inner surface of the rail. The grinding wheel is always in the set rail grinding position for grinding operations. When the grinding wheel is adjusted to the set grinding angle, the control lateral position adjustment component drives the rail guide wheel assembly to reciprocate laterally relative to the lateral movement frame, adjusting the lateral position between the rail guide wheel assembly and the grinding wheel, realizing the grinding operation of the grinding wheel at different lateral positions on the rail head. After the grinding wheel has been grinding for a certain period of time, the vertical distance between the grinding wheel and the rail surface decreases. The control vertical movement drive component drives the lateral movement frame to move downward relative to the rail guide wheel assembly, and the grinding wheel contacts the rail surface.

[0056] Therefore, during the movement of the guide wheel assembly along the rail, the grinding wheel may shift laterally or deflect to any angle relative to the rail. By controlling the extension and retraction of the lateral drive assembly, the lateral position adjustment assembly, and the vertical drive assembly, the guide wheel assembly is kept in contact with the inner surface of the rail to prevent the grinding wheel from deviating from the set rail grinding position, thereby improving the rail grinding accuracy and grinding quality.

[0057] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] The foregoing has provided a detailed description of the rail grinding vehicle, rail-aligning mechanism, and rail-aligning method provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A rail-aligning mechanism, characterized in that, include: Fixed mounting bracket (1); A transverse frame (2), the top of which is movably connected to the fixed mounting base (1), and the transverse frame (2) is arranged vertically; A guide wheel assembly for traveling along the rail (13) is located at the bottom of the transverse frame (2); A transverse drive assembly (12) has a fixed end located on the fixed mounting base (1) and an output end located on the transverse frame (2) in a transverse direction, so as to drive the transverse frame (2) to reciprocate in a transverse direction relative to the fixed mounting base (1). A lateral position adjustment component (3) is provided with a transition mounting seat (5) between the guide wheel component and the transverse frame (2) and near the lateral position adjustment component (3). The fixed end of the lateral position adjustment component (3) is located on the transition mounting seat (5), and the output end is located on the guide wheel component in the lateral direction, so as to drive the guide wheel component to move reciprocally in the lateral direction relative to the transverse frame (2). The lateral position adjustment component (3) pushes the rail wheel assembly to move laterally relative to the lateral frame (2). After reaching the set position, the lateral position adjustment component (3) locks laterally, and the rail wheel assembly cannot move laterally, thus locking the lateral position of the lateral frame (2) relative to the rail wheel assembly. The lateral drive component (12) drives the lateral frame (2) and the rail wheel assembly connected and locked thereto to move laterally, so that the rail wheel assembly contacts the side of the rail head, thereby giving the grinding wheel set in the lateral frame (2) and the rail a fixed lateral position. By adjusting the lateral position between the rail-mounted wheel assembly and the transverse frame (2) using the lateral position adjustment component (3), the grinding wheel inside the transverse frame (2) can be ground at different lateral positions on the rail. The guide wheel assembly is movably mounted on the transition mounting base (5); A vertical movement drive assembly (4) has a fixed end located on the horizontal movement frame (2) and an output end located vertically on the transition mounting base (5) to drive the rail wheel assembly to move vertically relative to the horizontal movement frame (2). The guide wheel assembly includes a bearing seat (6) and a guide wheel (7). The guide wheel (7) is rotatably disposed at the bottom of the bearing seat (6). The top of the bearing seat (6) is sleeved on the first guide rod (8) of the transition mounting seat (5), and the first guide rod (8) is arranged in a transverse direction. The transverse frame (2) is movably connected to the transition mounting base (5) in a vertical direction. A second guide rod (9) is provided on the transverse frame (2) near the top right side of the transition mounting base (5), and the second guide rod (9) is arranged vertically. The top right side of the transition mounting base (5) is sleeved on the second guide rod (9). The second guide rod (9) is mounted on the transverse frame (2) via the guide rod mounting seat (10); Both the first guide rod (8) and the second guide rod (9) are splined shafts. The top of the bearing seat (6) and the top of the right side of the transition mounting seat (5) are provided with ball spline sleeves that match the splined shafts.

2. The rail-aligning mechanism according to claim 1, characterized in that, The right side of the transition mounting base (5), located at the first guide rod (8), has a hollow structure.

3. A rail grinding vehicle, comprising a plurality of grinding units, wherein each grinding unit includes a rail-aligning mechanism, characterized in that, The guide rail mechanism is the guide rail mechanism described in claim 1 or 2 above. The grinding unit further includes a grinding device, which includes a grinding wheel, and the grinding wheel is rotatably disposed within the transverse frame (2).

4. A method for aligning rails, characterized in that, The rail grinding vehicle used in claim 3 includes: When the rail grinding vehicle moves longitudinally along the rail to perform grinding operations, the transverse drive assembly is controlled to drive the transverse frame to move laterally reciprocally relative to the fixed mounting seat, which in turn drives the rail wheel assembly to move laterally and contact the inner side of the rail, so that the grinding wheel set in the transverse frame has a fixed transverse position with the rail, thereby ensuring that the grinding wheel is always in the set rail grinding position for grinding operations. When it is necessary to change the lateral grinding position of the rail, the lateral position adjustment component is controlled to drive the rail guide wheel component to move back and forth in the lateral direction relative to the lateral moving frame, thereby adjusting the lateral position between the rail guide wheel component and the grinding wheel in the lateral moving frame, so as to realize the grinding operation of the grinding wheel at different lateral positions on the rail head.

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