Rail grinding wagon for rail maintenance

The track maintenance vehicle addresses the issue of debris and rust stain removal by integrating an absorbent system and grinding mechanism, ensuring effective debris collection and rust stain cleaning, thereby improving rail track maintenance.

CN120311541AInactive Publication Date: 2025-07-15GUANGDONG COMM POLYTECHNIC
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Patent Information

Application Number
CN202510651733.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-20
Publication Date
2025-07-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing track grinding trucks cannot effectively collect debris produced by the polishing during use, and cannot clean up the solid substance or rust spots on both sides of the rail, affecting the track maintenance effect.

Method used

A track grinding truck is designed, equipped with lifting components, vacuuming components and grinding mechanisms. The lifting components drive the vacuuming components and grinding mechanism to move above the rail. The vacuuming components collect debris. The grinding mechanism brushes the two sides of the rail through a steel brush, combining the cooperation of the hexagonal rods and hexagonal holes to achieve movement and transmission of the grinding components, and the steel brush cleans the rust spots.

Benefits of technology

It realizes effective collection of grinding chips and cleaning both sides of the rail, improves the effect of track maintenance, extends the service life of the rail, and improves the safety and comfort of the railway.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a track grinding wagon for track maintenance, and relates to the technical field of track maintenance, the track grinding wagon comprises a plurality of linearly distributed sleepers, the tops of the plurality of sleepers are jointly and fixedly provided with two rails, the tops of the two rails are jointly and movably connected with a vehicle body, the rear part of the vehicle body is fixedly provided with a lifting assembly, and the lifting assembly is fixedly connected with the rail. Dust collection assemblies are fixedly mounted on the left and right positions of the front side of the lifting assembly correspondingly, grinding mechanisms are fixedly mounted on the left and right positions of the rear side of the lifting assembly correspondingly, and the grinding mechanisms and the dust collection assemblies are located over the rails correspondingly. According to the track grinding wagon for track maintenance, a six-edge rod and a six-edge hole are matched, so that a second connecting plate has a certain moving distance, and a second triangular belt can be driven to conduct transmission; and the design of the steel brushes is adopted, so that the two sides of the rail can be brushed conveniently, and rusty spots on the two sides of the rail can be cleaned.
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Description

Technical Field

[0001] The present invention relates to the technical field of track maintenance, and particularly relates to a track grinding vehicle for track maintenance. Background Art

[0002] With the development of high-speed and heavy-haul railways, the requirements for the use of steel rails are becoming increasingly stringent. Long-term load-bearing and friction of steel rails will cause defects such as fatigue cracks, overhanging edges, and corrugation wear, which will affect the smoothness and safety of railway vehicle operation. At the same time, the above defects will accelerate the failure of steel rails, resulting in greater economic losses. Preventive and restorative maintenance of steel rails is a necessary measure to extend the life of steel rails, improve comfort, economy, and safety.

[0003] The following problems exist in the prior art: The existing track grinding vehicle for track maintenance is inconvenient to collect the debris generated during grinding and to clean the solid substances or rust spots adsorbed on both sides of the railway track during use, thereby reducing the maintenance effect of the grinding vehicle on the track. Summary of the Invention

[0004] The present invention provides a track grinding vehicle for track maintenance to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: A track grinding vehicle for track maintenance includes a plurality of sleepers linearly distributed. Two steel rails are fixedly installed on the tops of the plurality of sleepers. A vehicle body is movably connected to the tops of the two steel rails. A lifting assembly is fixedly installed at the rear of the vehicle body. Dust suction assemblies are fixedly installed at the left and right positions on the front side of the lifting assembly. Grinding mechanisms are fixedly installed at the left and right positions on the rear side of the lifting assembly, and both the grinding mechanisms and the dust suction assemblies are located directly above the steel rails; The lifting assembly includes a groove frame and a mounting frame located at the rear of the vehicle body. The front side of the groove frame is fixedly installed with the rear side of the vehicle body. A motor one is fixedly installed at the top of the groove frame. The output end of the motor one is fixedly installed with a screw rod one, and the upper and lower sides of the screw rod one are rotatably connected to the upper and lower positions inside the groove frame cavity. The outer wall of the screw rod one is threadedly connected with two screw sleeve sliders, and the rear sides of the two screw sleeve sliders are fixedly installed with the middle part of the front side of the mounting frame; The dust suction assembly includes a debris collection box. The rear side of the debris collection box is fixedly installed with one side of the front end of the mounting frame. An air pump is fixedly installed at the top position on the front side of the debris collection box, and the input end of the air pump extends to the top position inside the debris collection box cavity. A filter screen is fixedly installed at the top of the debris collection box cavity. A conduit one passing through the mounting frame is fixedly installed at the top of the rear side of the debris collection box. One end of the conduit one away from the debris collection box is fixedly installed with a dust suction hopper. A baffle is movably connected to the bottom position on the front side of the debris collection box; The grinding mechanism includes two sliding grooves, a second motor, a third motor, two first connecting plates, and two groups of mounting components. The front sides of the bottoms of the two first connecting plates are fixedly installed at the bottom position of the rear side of the mounting frame. The two sliding grooves are jointly formed at one side position of the bottom of the mounting frame. The front part of the third motor is fixedly installed at the top of one side of the rear end of the mounting frame. Two output ends of the third motor penetrate through the first connecting plate and are both drivingly connected with a first V-belt. The bottoms of the two first V-belts are jointly drivingly connected with a connecting rod. The middle part of the outer wall of the connecting rod is fixedly installed with a grinding wheel. The outer surface of the grinding wheel matches the top of the railway track. The second motor is fixedly installed at one side of the front end of the lifting component. The output end of the second motor is fixedly installed with a second screw rod. Two groups of grinding components are movably connected to the relative positions of the two groups of mounting components. The four grinding components are located on both sides of the railway track.

[0006] Preferably, the outer side of the groove frame is slidably connected to the middle position of the front part of the mounting frame.

[0007] Preferably, a protective net is fixedly installed at the bottom position of the inner cavity of the dust suction hopper.

[0008] Preferably, two control plates are threadedly connected to the outer wall of the second screw rod. The middle parts of the control plates are slidably connected to the inner sides of the sliding grooves.

[0009] Preferably, the mounting component includes a guide rod, a second connecting plate, two second V-belts, and a hexagonal rod. One end of the guide rod is movably sleeved on the outer side of the first connecting plate. The other end of the guide rod is rotatably connected to an electric telescopic rod. The output end of the electric telescopic rod is rotatably connected to the outer side of the grinding component close to the mounting frame. The outermost side of the hexagonal rod is drivingly connected to the front part of the second V-belt close to the mounting frame. The rear part of the second V-belt located at the front side is drivingly connected to the outer side of the grinding component located at the front part. The outer sides of the two grinding components are drivingly connected to both sides of the second V-belt located at the rear side. The rear part of the control plate is rotatably connected to the position of the outer wall of the hexagonal rod close to the front hexagonal hole. The front end of the second connecting plate is rotatably connected to one side of the outer wall of the hexagonal rod.

[0010] Preferably, a through hexagonal hole is formed in the middle of the connecting rod. One side of the inner wall of the hexagonal hole is slidably sleeved with the inner end of the hexagonal rod.

[0011] Preferably, the grinding component includes a shaft rod and a housing. The outer wall of the outer side of the shaft rod is drivingly connected to the second V-belt. The inner end of the shaft rod is movably sleeved with a second conduit. A plurality of steel brushes are fixedly connected to the outer side of the housing.

[0012] Preferably, a spring is movably sleeved on the inner-facing outer wall of the shaft rod. The spring is located inside the second conduit. A plurality of annularly distributed elastic pieces are fixedly connected to the outer wall of the end of the second conduit away from the shaft rod. The outer sides of the elastic pieces are fixedly connected to the inner side of the housing.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is as follows: 1. The present invention provides a rail grinding vehicle for track maintenance. By using the cooperation between a hexagonal rod and a hexagonal hole, the second connecting plate is provided with a certain moving distance and can drive the second V-belt for transmission.

[0014] 2. The present invention provides a rail grinding vehicle for track maintenance. By adopting the design of steel brushes, the positions on both sides of the rail can be cleaned to clean the rust spots on both sides of the rail.

[0015] 3. The present invention provides a rail grinding vehicle for track maintenance. By using the function of a spring, the inner wall of the second conduit and the end of the shaft rod are fixed, and the adaptive control of the distance between the housing and the shaft rod can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the rail grinding structure of the present invention; Figure 3 is a schematic diagram of the structure of the lifting assembly of the present invention; Figure 4 is a partial schematic diagram of the rail grinding of the present invention; Figure 5 is a schematic diagram of the structure of the grinding mechanism of the present invention; Figure 6 is a schematic diagram of the structure of the mounting assembly of the present invention; Figure 7 is a schematic diagram of the structure of the grinding assembly of the present invention; Figure 8 is a cross-sectional schematic diagram of the dust collection assembly of the present invention.

[0017] In the figure: 1, vehicle body; 2, sleeper; 3, rail; 4, dust collection assembly; 41, debris collection box; 42, filter screen; 43, air pump; 44, baffle; 45, first conduit; 46, dust suction hopper; 47, protective net; 5, lifting assembly; 51, first motor; 52, trough rack; 53, first screw; 54, screw sleeve slider; 55, mounting bracket; 6, grinding mechanism; 61, chute; 62, second motor; 63, second screw; 64, control board; 65, third motor; 66, first connecting plate; 67, first V-belt; 68, grinding assembly; 681, shaft rod; 682, spring; 683, second conduit; 684, elastic piece; 685, housing; 686, steel brush; 69, mounting assembly; 691, guide rod; 692, electric telescopic rod; 693, second connecting plate; 694, second V-belt; 695, hexagonal rod; 696, hexagonal hole; 610, grinding wheel; 611, connecting rod. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] like Figures 1-8 As shown, a track grinding vehicle for track maintenance comprises a plurality of sleepers 2 distributed linearly, two rails 3 are fixedly mounted on the tops of the plurality of sleepers 2, a vehicle body 1 is movably connected to the tops of the two rails 3, a lifting assembly 5 is fixedly mounted on the rear of the vehicle body 1, dust collecting assemblies 4 are fixedly mounted on the left and right positions of the front side of the lifting assembly 5, a grinding mechanism 6 is fixedly mounted on the left and right positions of the rear side of the lifting assembly 5, and the grinding mechanism 6 and the dust collecting assembly 4 are both located directly above the rails 3; The lifting assembly 5 includes a slot frame 52 and a mounting frame 55 located at the rear side of the vehicle body 1. The front side of the slot frame 52 is fixedly mounted to the rear side of the vehicle body 1. A motor 51 is fixedly mounted on the top of the slot frame 52. A screw 53 is fixedly mounted on the output end of the motor 51. The upper and lower sides of the screw 53 are rotatably connected to the upper and lower positions of the inner cavity of the slot frame 52. The outer wall of the screw 53 is threadedly connected to two screw sleeve sliders 54. The rear sides of the two screw sleeve sliders 54 are fixedly mounted to the middle part of the front side of the mounting frame 55. The dust collection assembly 4 includes a collection box 41, the rear side of the collection box 41 is fixedly installed with one side of the front end of the mounting frame 55, an air pump 43 is fixedly installed at the top position of the front side of the collection box 41, and the input end of the air pump 43 extends to the top position of the inner cavity of the collection box 41, a filter 42 is fixedly installed at the top of the inner cavity of the collection box 41, a conduit 45 penetrating the mounting frame 55 is fixedly installed at the top of the rear side of the collection box 41, a dust hopper 46 is fixedly installed at one end of the conduit 45 away from the collection box 41, and a baffle 44 is movably connected to the bottom position of the front side of the collection box 41; The grinding mechanism 6 includes two slide grooves 61, motor 2 62, motor 3 65, two connecting plates 1 66 and two groups of mounting components 69. The front sides of the bottom of the two connecting plates 1 66 are fixedly installed at the bottom position of the rear side of the mounting frame 55. The two slide grooves 61 are jointly opened at one side position of the bottom of the mounting frame 55. The front part of motor 3 65 is fixedly installed at the top of one side of the rear end of the mounting frame 55. The two output ends of motor 3 65 pass through connecting plate 1 66 and are both transmission-connected with V-belt 1 67. The bottoms of the two V-belts 1 67 are jointly transmission-connected with connecting rod 611. A grinding wheel 610 is fixedly installed at the middle part of the outer wall of connecting rod 611. The outer surface of grinding wheel 610 matches the top of rail 3. Motor 2 62 is fixedly installed at one side of the front end of lifting component 5. Screw 2 63 is fixedly installed at the output end of motor 2 62. The relative positions of the two groups of mounting components 69 are movably connected with two groups of grinding components 68. Four grinding components 68 are located on both sides of rail 3.

[0020] like Figure 3 and Figure 4 As shown, the outer side of the slot frame 52 is slidably connected to the middle position of the front part of the mounting frame 55.

[0021] The groove frame 52 and the mounting frame 55 are matched to each other to stably move the dust collecting assembly 4 and the grinding mechanism 6 up and down, thereby reducing the phenomenon of up and down movement.

[0022] like Figure 8 As shown, a protective net 47 is fixedly installed at the bottom of the inner cavity of the dust hopper 46.

[0023] The protective net 47 is used to block larger solid debris entering the inner cavity of the dust hopper 46, preventing larger objects from being sucked into the inner cavity of the dust hopper 46 and blocking the conduit 45, thereby affecting the dust collection effect.

[0024] like Figure 3 and Figure 5 As shown, the outer wall of the second screw rod 63 is threadedly connected to two control plates 64 , and the middle part of the control plate 64 is slidably connected to the inner side of the slide groove 61 .

[0025] The position between the two mounting components 69 is controlled by the transmission of the two control plates 64 by the second screw rod 63 .

[0026] like Figure 5 and Figure 6 As shown, the mounting assembly 69 includes a guide rod 691, a connecting plate 693, two triangular belts 694 and a hexagonal rod 695. One end of the guide rod 691 is movably connected to the outer side of the connecting plate 66, and the other end of the guide rod 691 is rotatably connected to the electric telescopic rod 692. The output end of the electric telescopic rod 692 is rotatably connected to the outer side of the grinding assembly 68 near the mounting frame 55. The outermost side of the hexagonal rod 695 is transmission-connected to the front part of the triangular belt 694 near the mounting frame 55, the rear part of the front triangular belt 694 is transmission-connected to the outer side of the front grinding assembly 68, the outer sides of the two grinding assemblies 68 are transmission-connected to the two sides of the triangular belt 694 at the rear side, the rear part of the control panel 64 is rotationally connected to the outer wall of the hexagonal rod 695 near the front hexagonal hole 696, and the front end of the connecting plate 693 is rotationally connected to one side of the outer wall of the hexagonal rod 695.

[0027] The electric telescopic rod 692 is used to adjust the tilt angle of the connecting plate 693 and simultaneously lift and lower the rear end of the connecting plate 693 so that the two sets of grinding components 68 can fit the outer surface of the rail 3.

[0028] like Figure 6As shown, a through hexagonal hole 696 is formed in the middle of the connecting rod 611, and the inner end of the hexagonal rod 695 is slidably sleeved on one side of the inner wall of the hexagonal hole 696.

[0029] By adopting the fit between the hexagonal rod 695 and the hexagonal hole 696, the second connecting plate 693 has a certain moving distance and can drive the second V-belt 694 for transmission.

[0030] As Figure 6 and Figure 7 As shown, the grinding assembly 68 includes a shaft rod 681 and a housing 685. The outer wall of the outer side of the shaft rod 681 is drivingly connected to the second V-belt 694. A second conduit 683 is movably sleeved on the inner end of the shaft rod 681, and a plurality of steel brushes 686 are fixedly connected to the outer side of the housing 685.

[0031] By adopting the design of the steel brushes 686, the positions on both sides of the railway track 3 can be cleaned to clean the rust spots on both sides of the railway track 3.

[0032] As Figure 7 As shown, a spring 682 is movably sleeved on the inner wall of the shaft rod 681 facing inwards. The spring 682 is located inside the second conduit 683. A plurality of annularly distributed elastic pieces 684 are fixedly connected to the outer wall of the end of the second conduit 683 away from the shaft rod 681, and the outer sides of the elastic pieces 684 are fixedly connected to the inner side of the housing 685.

[0033] By the action of the spring 682, the inner wall of the second conduit 683 and the end of the shaft rod 681 are fixed, and the adaptive control of the distance between the housing 685 and the shaft rod 681 can be realized.

[0034] Working principle of the present invention: When grinding the outer side of the [object], first start the first motor 51 to drive the first screw rod 53 to rotate, which can drive the mounting frame 55 at the rear side of the two screw sleeve sliders 54 to move downward, so that the bottom of the outer surface of the grinding wheel 610 is tightly pressed against the top of the rail 3. Then, under the action of the electric telescopic rod 692, the bottom of the rear side of the second connecting plate 693 can be pushed, so that the four grinding assemblies 68 are located on the left and right sides of the rail 3. At the same time, start the second motor 62 to drive the second screw rod 63 to rotate, which can drive the two control plates 64 to move relative to each other. At the same time, the control plates 64 push the two second connecting plates 693, so that the four grinding assemblies 68 are in the position of approaching each other to press the left and right sides of the rail 3 tightly. Then start the third motor 65 to drive the first triangular belts 67 on both sides to transmit power, which can drive the connecting rod 611 to rotate, so that the connecting rod 611 drives the grinding wheel 610 to grind the top of the rail 3. At the same time, under the action of the rotation of the connecting rod 611, the hexagonal rod 695 can be driven to rotate, so as to drive the second triangular belt 694 at the front part to transmit power, and under the action of the rear second triangular belt 694, the front and rear two shaft rods 681 are driven to rotate, so that the steel brushes 686 on the outer side of the housing 685 grind the left and right sides of the rail 3. At the same time, start the vehicle body 1 to drive the lifting assembly 5, the two dust suction assemblies 4 and the two grinding mechanisms 6 to move. At the same time, start the air pump 43 to extract the air in the inner cavity of the dust collection box 41, so as to collect the air at the bottom of the dust suction hopper 46 and the debris generated by grinding. As a result, the debris enters the inner cavity of the dust collection box 41 from the position of the first conduit 45, and under the action of the filter screen 42, the air and impurities are filtered. The air is ejected from the output end of the air pump 43 into the external air under the action of the air pump 43. When the dust in the inner cavity of the dust collection box 41 reaches a certain amount, open the baffle 44 to remove the dust at the bottom of the inner cavity of the dust collection box 41, so as to achieve the purpose of dust removal.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An orbital grinding vehicle for track maintenance, comprising a plurality of sleepers (2) linearly distributed, two rails (3) are fixedly installed on the tops of the plurality of sleepers (2) together, and a vehicle body (1) is movably connected to the tops of the two rails (3) together, and it is characterized in that: A lifting assembly (5) is fixedly installed at the rear of the vehicle body (1). Dust suction assemblies (4) are fixedly installed at the left and right positions on the front side of the lifting assembly (5). Grinding mechanisms (6) are fixedly installed at the left and right positions on the rear side of the lifting assembly (5), and both the grinding mechanisms (6) and the dust suction assemblies (4) are located directly above the railway track (3). The lifting assembly (5) includes a groove frame (52) and a mounting frame (55) located at the rear of the vehicle body (1). The front side of the groove frame (52) is fixedly installed with the rear side of the vehicle body (1). A first motor (51) is fixedly installed at the top of the groove frame (52). The output end of the first motor (51) is fixedly installed with a first screw rod (53), and the upper and lower sides of the first screw rod (53) are rotatably connected to the upper and lower positions inside the groove frame (52). Two screw sleeve sliders (54) are threadedly connected to the outer wall of the first screw rod (53), and the rear sides of the two screw sleeve sliders (54) are fixedly installed with the middle of the front side of the mounting frame (55). The dust suction assembly (4) includes a debris collection box (41). The rear side of the debris collection box (41) is fixedly installed with one side of the front end of the mounting frame (55). An air pump (43) is fixedly installed at the top position on the front side of the debris collection box (41), and the input end of the air pump (43) extends to the top position inside the debris collection box (41). A filter screen (42) is fixedly installed at the top inside the debris collection box (41). A first conduit (45) penetrating the mounting frame (55) is fixedly installed at the top of the rear side of the debris collection box (41). One end of the first conduit (45) away from the debris collection box (41) is fixedly installed with a dust suction hopper (46). A baffle (44) is movably connected to the bottom position on the front side of the debris collection box (41). The grinding mechanism (6) includes two chutes (61), a second motor (62), a third motor (65), two first connecting plates (66), and two sets of mounting components (69). The front sides of the bottoms of the two first connecting plates (66) are fixedly installed with the bottom position of the rear side of the mounting frame (55). The two chutes (61) are jointly formed on one side of the bottom of the mounting frame (55). The front part of the third motor (65) is fixedly installed with the top of one side of the rear end of the mounting frame (55). The two output ends of the third motor (65) penetrate the first connecting plates (66) and are both drivingly connected with a first triangular belt (67). The bottoms of the two first triangular belts (67) are jointly drivingly connected with a connecting rod (611). A grinding wheel (610) is fixedly installed at the middle of the outer wall of the connecting rod (611), and the outer surface of the grinding wheel (610) matches the top of the railway track (3). The second motor (62) is fixedly installed with one side of the front end of the lifting assembly (5). The output end of the second motor (62) is fixedly installed with a second screw rod (63). Two sets of grinding components (68) are movably connected to the relative positions of the two sets of mounting components (69), and the four grinding components (68) are located on both sides of the railway track (3).

2. The rail grinding vehicle for track maintenance according to claim 1, wherein: The outside of the groove frame (52) is slidably connected to the middle position of the front part of the mounting frame (55).

3. The track grinding vehicle for track maintenance according to claim 1, characterized in that: A protective net (47) is fixedly installed at the bottom position inside the dust suction hopper (46).

4. A rail grinding vehicle for track maintenance according to claim 1, characterized in that: Two control plates (64) are threadedly connected to the outer wall of the second screw (63), and the middle of the control plate (64) is slidably connected to the inner side of the chute (61).

5. The track grinding vehicle for track maintenance according to claim 4, wherein: The mounting assembly (69) includes a guide rod (691), a second connecting plate (693), two second triangular belts (694), and a hexagonal rod (695). One end of the guide rod (691) is movably sleeved on the outer side of the first connecting plate (66), and the other end of the guide rod (691) is rotatably connected to an electric telescopic rod (692). The output end of the electric telescopic rod (692) is rotatably connected to the outer side of the grinding assembly (68) near the mounting frame (55). The outermost side of the hexagonal rod (695) is drivingly connected to the front part of the second triangular belt (694) near the mounting frame (55). The rear part of the front second triangular belt (694) is drivingly connected to the outer side of the front grinding assembly (68). The outer sides of the two grinding assemblies (68) are drivingly connected to both sides of the rear second triangular belt (694). The rear part of the control plate (64) is rotatably connected to the position of the outer wall of the hexagonal rod (695) near the front hexagonal hole (696). The front end of the second connecting plate (693) is rotatably connected to one side of the outer wall of the hexagonal rod (695).

6. The rail grinding vehicle for track maintenance according to claim 5, characterized in that: A through hexagonal hole (696) is formed in the middle of the connecting rod (611), and one side of the inner wall of the hexagonal hole (696) is slidably sleeved on the inner end of the hexagonal rod (695).

7. A rail grinding vehicle for track maintenance according to claim 1, characterized in that: The grinding assembly (68) includes a shaft rod (681) and a housing (685). The outer wall of the outer side of the shaft rod (681) is drivingly connected to the second triangular belt (694). The inner end of the shaft rod (681) is movably sleeved with a second conduit (683). A plurality of steel brushes (686) are fixedly connected to the outer side of the housing (685).

8. The track grinding vehicle for track maintenance according to claim 7, characterized in that: A spring (682) is movably sleeved on the inner-facing outer wall of the shaft rod (681). The spring (682) is located inside the second conduit (683). A plurality of elastic pieces (684) distributed in a ring are fixedly connected to the outer wall of the end of the second conduit (683) away from the shaft rod (681). The outer sides of the elastic pieces (684) are fixedly connected to the inner side of the housing (685).