A kind of earth planing mechanism of a pillow car

Abstract

The application provides a soil plowing mechanism of a tie-changing vehicle, belonging to the technical field of engineering vehicles, which comprises a soil plowing support installed at the front end of the vehicle body of the tie-changing vehicle, a plurality of support frames with coaxial through holes are arranged on the support, a rotating shaft is arranged in the through hole and the outer periphery of the rotating shaft is provided with a soil plowing shovel, and the soil plowing shovel is distributed corresponding to the middle part and the distance between the two sides of the rail. The mechanism is equipped with a second motor to drive the rotating shaft through a transmission belt, a support rotating hydraulic cylinder is arranged to adjust the height of the soil plowing support, so that the soil plowing shovel can be in contact with or separated from the ground as needed. A connecting frame, a soil retaining plate and a pushing hydraulic cylinder are further arranged, the soil retaining plate can be opened and closed and is provided with a rail avoiding groove, and the sand soil backfilling is realized by cooperating with the movement of the vehicle body. The mechanism can simultaneously clean the sand soil around and below the rail, has a comprehensive operation range, is flexible to adjust, can avoid the scattering of sand soil, simplifies the cleaning and backfilling process, improves the efficiency and stability of the tie-changing operation, and is suitable for various track maintenance scenes.

Description

Technical Field

[0001] This application relates to the field of engineering vehicle technology, and in particular to a soil-scraping mechanism for a pillow-changing vehicle. Background Technology

[0002] During sleeper replacement, the sand and soil under and around the sleeper to be replaced must first be cleared to create space for sleeper removal and installation. The existing sleeper replacement vehicle's soil-clearing mechanism has many shortcomings, and these problems are more pronounced in different application scenarios: In typical small- to medium-sized track maintenance scenarios, some existing excavation mechanisms employ single-shovel or decentralized multi-shovel designs, requiring modification and adaptation of equipment such as excavators. These mechanisms can only selectively clear sand and soil from one side or a localized area of ​​the sleepers. During operation, multiple adjustments to the equipment's position are necessary to cover the middle and sides of the rail. Especially in medium- to long-distance maintenance operations exceeding 100 meters, frequent adjustments extend the time spent closing the track, impacting railway traffic efficiency.

[0003] In urban rail and subway environments, most existing excavation companies lack dedicated retaining structures. During operations, sand and soil easily scatter in all directions. If the track is adjacent to urban green belts, sidewalks, or buildings, the scattered sand and soil will pollute the surrounding environment and require additional manpower for cleanup, increasing operating costs and time. Furthermore, in maintenance work around shallow subway tunnels, the unprotected scattering of sand and soil may exacerbate the risk of ground subsidence.

[0004] In complex terrain scenarios (such as mountain railways and areas with high seismic activity), some existing excavation mechanisms use a manually adjustable height structure. The adjustment process is cumbersome and lacks precision. In environments with steep slopes or significant ground vibrations, adjustment failures or mechanism misalignment are prone to occur, leading to the excavator colliding with the rails or incomplete cleaning. In permafrost or cold regions, the power transmission structure of existing mechanisms often relies on intermediate components such as gearboxes. At low temperatures, problems such as viscous hydraulic oil and brittle mechanical parts can easily occur, requiring additional insulation or heating equipment, which increases equipment maintenance costs and operational complexity.

[0005] In long-distance, heavy-haul railway maintenance scenarios, existing soil-scraping mechanisms suffer from insufficient power transmission stability. Some mechanisms employ gear drives or direct rigid connections, which are prone to wear or jamming during continuous high-intensity operations. These mechanisms struggle to achieve continuous and efficient sand and soil removal, and the removed sand and soil lacks a directional accumulation design. Subsequent backfilling requires separate tamping equipment for compaction, which not only prolongs the work process but may also affect the track support modulus due to uneven backfilling.

[0006] In addition, some existing soil-digging mechanisms lack coordinated design with other operating components. In the connection between sleeper replacement and sand backfilling, manual assistance is required to guide the sand back into place. Especially in busy trunk railway scenarios, manual intervention will further prolong the line closure time and reduce the overall maintenance efficiency. Utility Model Content

[0007] The purpose of this invention is to solve the above-mentioned problems by providing a soil-scraping mechanism for a pillow-changing vehicle.

[0008] The technical solution of this application is implemented as follows: This application provides a soil-scraping mechanism for a pillow-changing vehicle, the soil-scraping mechanism of which includes: a soil-scraping mechanism installed on the body of the pillow-changing vehicle; The soil-removing mechanism includes: A soil-shoveling support, the rear end of which is rotatably mounted on the front end of the vehicle body, the soil-shoveling support having a first support, a second support and a third support, and the first support, the second support and the third support all having coaxial through holes; A rotating shaft is rotatably mounted on a through hole. The outer circumferential surface of the rotating shaft has a digging shovel arranged circumferentially thereon, and the lip of the digging shovel faces the rotation direction of the rotating shaft. The first support is located in the middle of the soil-digging support and there is a pair of them. A first gap is formed between the two first supports. The second support extends to the left side of the vehicle body and forms a second gap with the first support. The third support extends to the right side of the vehicle body and forms a third gap with the first support. The digging shovels are positioned at the middle, left, and right ends of the rotating shaft, corresponding to the first, second, and third spacings, respectively.

[0009] The advantages or beneficial effects of the above technical solutions include at least the following: The digging shovels are distributed at specific intervals in the middle, left and right ends of the rotating shaft, which can simultaneously cover the middle and sides of the rail. The entire digging can be completed in one operation without the need for multiple equipment adjustments. In medium and long track maintenance, this can significantly shorten the operation time and improve the efficiency of line traffic.

[0010] The rotating shaft is connected to the second motor via a transmission belt, ensuring stable power transmission and reducing intermediate wear. Combined with the design of the shovel lip facing the direction of rotation, it can still maintain smooth operation in complex environments such as frozen soil and cold, without the need for additional insulation or enhanced power equipment.

[0011] The hydraulic cylinder that rotates the support can flexibly adjust the rotation angle of the digging support. The hydraulic drive mode has a rapid response and high adjustment precision. In mountainous areas, high seismic activity zones, and other complex terrain or areas with significant vibrations, it can ensure the precise positioning of the digging shovel and avoid collisions with rails or mechanism deviation.

[0012] The shovel's groove design guides sand and soil to accumulate in a specific direction. Combined with the blocking effect of the retaining plate, it can effectively prevent sand and soil from scattering and polluting in environmentally sensitive scenarios such as urban rail and subway areas, reducing the amount of subsequent manual cleaning work and lowering operating costs.

[0013] The retaining plate works in conjunction with the hydraulic cylinder and connecting frame to push the accumulated sand back into the pit as the car moves, completing the backfilling without relying on separate tamping equipment. This simplifies the operation process in the maintenance of long-distance heavy-haul railways, ensures uniform backfilling, and helps maintain the stability of the track support modulus.

[0014] The clearance groove on the soil-digging support ensures that the soil retaining plate does not interfere with the connecting frame when it is turned over. The components have strong coordination and can improve the stability of equipment operation during continuous high-intensity operations, which is suitable for the efficient maintenance needs of busy trunk railways. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0016] Figure 1 A schematic diagram of the vehicle body according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the retaining plate rotating downwards to its limit position according to an embodiment of the present invention is shown; Figure 3 A schematic diagram showing the retaining plate of this utility model rotating upward to its limit position is shown; Figure 4 The first schematic diagram shows the soil-scraping mechanism of this utility model before and after soil-scraping. The upper part is a schematic diagram before soil-scraping, and the lower part is a schematic diagram during soil-scraping. Figure 5 The second schematic diagram shows the soil-scraping mechanism of this utility model before and after soil-scraping. The upper part is a schematic diagram of soil-scraping, and the lower part is a schematic diagram of soil-scraping after soil-scraping. In the lower part, the sleeper moves downward due to the movement of the sleeper-changing mechanism and leaves its original position. Figure 6 This diagram illustrates how the boom rotates to the sleeper storage rack to grab a new sleeper according to an embodiment of the present invention. Figure 7 A schematic diagram showing the boom rotating to the front of the vehicle body according to an embodiment of the present invention is provided. Figure 8The diagram shows a first clamping assembly and a second clamping assembly according to an embodiment of the present invention. In the upper half of the diagram, both the first clamping assembly and the second clamping assembly are moved downward to their extreme positions, and the first and second grippers are closed, with the rotating frame rotating to a position parallel to the support frame. In the lower half of the diagram, both the first clamping assembly and the second clamping assembly are moved downward to their extreme positions, and the first and second grippers are opened, with the rotating frame rotating to a position at an angle to the support frame. Figure 9 A schematic diagram of the first lifting hydraulic cylinder and the second lifting hydraulic cylinder according to an embodiment of the present invention is shown; Figure 10 A schematic diagram of the structure of a first embodiment of the transverse moving component of this utility model is shown; Figure 11 A schematic diagram of the structure of a second embodiment of the transverse moving component of this utility model is shown, in which the dashed arrows indicate the moving direction of the sliding clamping liner; Figure 12 An installation diagram of the second embodiment of this utility model is shown; Figure 13 The diagram shows a sleeper moving from the first clamping component to the second clamping component via a lateral moving component according to an embodiment of the present invention. The upper part shows the first clamping component clamping the sleeper, and the lower part shows the second clamping component clamping the sleeper. Figure 14 This diagram illustrates how the second clamping assembly of this embodiment discards the replaced sleeper beside the car body. The upper part shows the second clamping assembly clamping the old sleeper, and the lower part shows the second clamping assembly discarding the old sleeper. Figure 15 A schematic diagram of the structure of the excavating support, the rotating shaft, and the second motor according to an embodiment of the present invention is shown. Figure 16 The diagram shows the boom rotating to the sleeper storage rack to grab a new sleeper according to an embodiment of the present invention, and the new sleeper moving from the first clamping component to the second clamping component. The upper part shows the first clamping component clamping the new sleeper, and the lower part shows the second clamping component clamping the new sleeper. Figure 17 A top view schematic diagram of the soil-scraping mechanism of the pillow-changing vehicle according to an embodiment of the present invention is shown; Figure 18 A schematic diagram showing the positions of the first support, second support, third support, and clearance groove according to an embodiment of the present invention is provided.

[0017] Reference numerals: 10. Car body; 11. Steering hydraulic cylinder; 12. Sleeper storage rack; 13. Cab; 14. Track assembly; 20. Sleeper changing mechanism; 21. Boom; 22. Stick; 23. Rotating frame; 24. Support frame; 241. Third hydraulic cylinder; 25. First clamping assembly; 251. First gripper; 252. First lifting hydraulic cylinder; 26. Second clamping assembly; 261. Second gripper; 262. Second lifting hydraulic cylinder; 27. Lateral movement assembly; 271. Transmission assembly; 2711. Drive shaft; 271 2. Transmission belt; 272. First motor; 273. Sliding clamping liner; 2731. Covering part; 274. Liner moving hydraulic cylinder; 28. Gripper hydraulic cylinder; 30. Soil-digging mechanism; 31. Soil-digging support; 311. First support frame; 312. Second support frame; 313. Third support frame; 314. Clearance groove; 32. Rotating shaft; 321. Soil-digging shovel; 322. Shovel groove; 33. Second motor; 34. Support rotating hydraulic cylinder; 35. Connecting frame; 36. Soil-blocking plate; 361. Clearance groove; 37. Pushing hydraulic cylinder. Detailed Implementation

[0018] Reference Figure 1 This utility model discloses a sleeper replacement car, which includes: a sleeper replacement mechanism 20 installed on the car body 10 of the sleeper replacement car and a sleeper storage rack 12 installed on the side of the sleeper replacement car, on which a plurality of sleepers are mounted. The sleeper replacement mechanism 20 is used to remove and replace the sleepers of the railway rail. The sleeper replacement mechanism 20 includes: The boom 21 and stick 22 are configured such that the first end of the boom 21 is rotatably mounted on the vehicle body 10 via an adapter, and the first end of the stick 22 is rotatably connected to the second end of the boom 21. The rotation between the stick 22 and the boom 21 is achieved by a hydraulic cylinder mounted between them. Specifically, the adapter is rotatably mounted on the vehicle body 10, the boom 21 is rotatably mounted on the adapter, and the vehicle body 10 is also equipped with a steering hydraulic cylinder 11. The cylinder end of the steering hydraulic cylinder 11 is rotatably mounted on the vehicle body 10, and the telescopic end is rotatably mounted on the adapter. By extending and retracting the telescopic end of the steering hydraulic cylinder 11, the adapter is rotated, thereby causing the boom 21 to swing.

[0019] The support frame 24 and the rotating frame 23 are rotatably connected to the support frame 24, and the top surface of the support frame 24 is rotatably mounted on the second end of the boom 22. The first clamping assembly 25 is movably installed on the part of the support frame 24 away from the rotating frame 23, and can move up and down along the height direction of the support frame 24; specifically, the support frame 24 is equipped with a first lifting hydraulic cylinder 252, the cylinder end of the first lifting hydraulic cylinder 252 is fixed to the inner side of the support frame 24, and the telescopic end is fixed to the first gripper 251.

[0020] The second clamping assembly 26 is movably mounted on the rotating frame 23 and can move up and down along the height direction of the rotating frame 23. Specifically, the rotating frame 23 is equipped with a second lifting hydraulic cylinder 262. The cylinder end of the second lifting hydraulic cylinder 262 is fixed to the inner side of the rotating frame 23, and the telescopic end is fixed to the second gripper 261.

[0021] like Figure 6 As shown, through the cooperation of the steering hydraulic cylinder 11, the boom 21 and the stick 22, the boom 21 can be rotated to the direction of the sleeper storage rack 12, and a new sleeper can be clamped by the first clamping assembly 25.

[0022] Furthermore, such as Figure 8 As shown, a third hydraulic cylinder 241 is installed between the support frame 24 and the rotating frame 23. The cylinder end of the third hydraulic cylinder 241 is rotatably mounted on the support frame 24, and the telescopic end is rotatably mounted on the rotating frame 23. The rotating frame 23 can be rotated by the extension and retraction of the third hydraulic cylinder 241.

[0023] The first clamping assembly 25 and the second clamping assembly 26 respectively have an openable and closable first jaw 251 and a second jaw 261, such as Figure 8 As shown, both the first gripper 251 and the second gripper 261 open and close via the extension and retraction of the gripper hydraulic cylinder 28. Figure 8 As can be seen, when the telescopic end of the gripper hydraulic cylinder 28 extends, the grippers open to each other; when the telescopic end retracts, the grippers close to each other, so that both the first gripper 251 and the second gripper 261 can grip the sleeper. The gripping surfaces of the first gripper 251 and the second gripper 261 are equipped with a lateral movement component 27. The lateral movement component 27 replaces the grippers in gripping the sleeper, and the lateral movement component 27 can drive the gripped sleeper to move laterally from the first gripper 251 to the second gripper 261, or from the second gripper 261 to the first gripper 251, so that the sleeper can move and switch laterally between the first gripper 251 and the second gripper 261. The transverse component 27 described above in this application has two specific implementations: In the first embodiment, the lateral movement component 27 includes: Transmission assembly 271 is mounted on the clamping surface; The transmission assembly 271 has two transmission shafts 2711, which are mounted on the gripper along the length of the gripper, and a transmission belt 2712 is sleeved on the transmission shafts 2711. When the first jaw 251 or the second jaw 261 clamps the sleeper, the surface of the transmission belt 2712 is in contact with the side of the sleeper. The transmission assembly 271 further includes a first motor 272. The body of the first motor 272 is mounted on the gripper, and the output end passes through the gripper and is fixed to one of the rotating shafts 32. The first motor 272 drives the transmission shaft 2711 to rotate, so that the transmission belt 2712 moves. Since the surface of the transmission belt 2712 is in contact with the side of the sleeper, the sleeper can be moved in the direction from the first gripper 251 to the second gripper 261 or from the second gripper 261 to the first gripper 251.

[0024] like Figure 13 As shown, after the first gripper 251 grips the sleeper, the first motor 272 drives the transmission shaft 2711 to rotate, causing the transmission belt 2712 on the first gripper 251 to move forward, causing the sleeper to move towards the second gripper 261. At this time, the second gripper 261 can be in an open state. When the sleeper moves to the effective gripping range of the second gripper 261, the second gripper 261 clamps the sleeper. The first motor 272 on the second gripper 261 drives the transmission shaft 2711 to rotate, causing the transmission belt 2712 on the second gripper 261 to move forward and pull the sleeper to the middle of the second gripper 261, so that the switch can be performed. The first embodiment is suitable for use with wooden sleepers weighing between 120 kg and 150 kg; The lateral movement component 27 includes: The sliding clamping liner 273 is movably mounted on the clamping surface of the gripper; Liner plate moving hydraulic cylinder 274, the cylinder end of the liner plate moving hydraulic cylinder 274 is fixed to the inner side of the gripper, and the telescopic end is fixed to the side of the sliding clamping liner plate 273. When the first jaw 251 or the second jaw 261 clamps the sleeper, the surface of the sliding clamping liner 273 is in contact with the side of the sleeper. The sliding clamping liner 273 also has a blocking part 2731 for blocking the hydraulic cylinder 274 that moves the liner; Based on the above structure, when the first gripper 251 clamps the sleeper, since the surface of the sliding gripping liner 273 is in contact with the side of the sleeper, the operator controls the extension and retraction end of the liner moving hydraulic cylinder 274 to extend and retract, so that the sliding gripping liner 273 moves towards the second gripper 261. In conjunction with the clamping of the first gripper 251, the sleeper can be transported towards the second gripper 261. At this time, the second gripper 261 is in an open state. When the sleeper reaches the effective clamping range of the second gripper 261, the second gripper 261 clamps again, so that the surface of the sliding gripping liner 273 on the second gripper 261 is in contact with the side of the sleeper, and the switching can be completed. It should be noted that before the second gripper 261 clamps the sleeper, the sliding clamping liner 273 on the second gripper 261 needs to be moved to the limit position closest to the first gripper 251 before clamping.

[0025] The second embodiment is suitable for use with concrete sleepers weighing between 150 kg and 200 kg. The common feature of the first embodiment and the second embodiment is that the distance between the first gripper 251 and the second gripper 261 is less than 1 / 2 of the length of the sleeper. That is, when the sleeper moves from the first gripper 251 to the second gripper 261 and extends, it can be ensured that the extended end of the sleeper can be clamped by the second gripper 261 before the middle of the sleeper reaches the edge of the first gripper 251. This avoids the situation where the center of gravity of the sleeper exceeds the effective gripping range of the gripper after it extends, and the other end cannot enter the effective gripping range of the other gripper.

[0026] As a preferred embodiment of the above structure, the vehicle body 10 is also equipped with a steering hydraulic cylinder 11, the cylinder end of the steering hydraulic cylinder 11 being rotatably mounted on the vehicle body 10, and the telescopic end being rotatably mounted on the adapter. The steering hydraulic cylinder 11 is arranged laterally relative to the vehicle body 10; The boom 21 is mounted on the left side of the vehicle body 10 relative to the central axis in the length direction of the vehicle body 10, so that when the boom 21 swings to the front of the vehicle body 10, the axis of the first clamping assembly 25 corresponds to the axis of the vehicle body 10. The sleeper storage rack 12 is located on the right side of the car body 10, so that when the boom 21 swings to the right side of the car body 10, the first clamping component 25 or the second clamping component 26 can be smoothly clamped onto the sleeper on the sleeper storage rack 12. It is worth noting that the sleeper storage rack 12 stacks sleepers in the height direction and also in the width direction. When the first clamping component 25 or the second clamping component 26 clamps a new sleeper, the sleeper can be pulled out by the lateral moving component 27. The support for the new sleeper below does not need to make way for the new sleeper above, thus improving space utilization.

[0027] This utility model also discloses a soil-clearing mechanism for a sleeper replacement vehicle; the soil-clearing mechanism 30 is used to clear the sand under the sleeper to be replaced, so as to create a gap under the sleeper, and is used for the replacement and installation of the sleeper. The soil-scraping mechanism of the pillow-changing vehicle also includes a soil-scraping mechanism 30 installed on the body 10 of the pillow-changing vehicle; The soil-digging mechanism 30 includes: The rear end of the soil-shoveling support 31 is rotatably mounted on the front end of the vehicle body 10. The soil-shoveling support 31 has a first support 311, a second support 312 and a third support 313. The first support 311, the second support 312 and the third support 313 are all provided with coaxial through holes. The rotating shaft 32 is rotatably mounted on the through hole. The outer circumferential surface of the rotating shaft 32 has a digging shovel 321 arranged along its circumference. The shovel lip of the digging shovel 321 faces the rotation direction of the rotating shaft 32. When the rotating shaft 32 rotates, it will push the sand between the sleeper and the car body 10 toward the car body 10, forming a pit. The sand under the sleeper to be replaced will collapse into the pit due to vibration, causing the bottom of the sleeper to lose support. It should be noted that even if the sand under it does not collapse into the pit, it will become loose due to vibration and gradually collapse downward. like Figure 18 As shown, the first support 311 is located in the middle of the soil-digging support 31 and there is a pair of them. A first gap is formed between the two first supports 311. The second support 312 extends to the left side of the vehicle body 10 and forms a second gap with the first support 311. The third support 313 extends to the right side of the vehicle body 10 and forms a third gap with the first support 311. The digging shovel 321 is positioned at the middle, left, and right ends of the rotating shaft 32, corresponding to the first spacing, the second spacing, and the third spacing, respectively. The excavation mechanism 30 also includes: Second motor 33, such as Figure 15 As shown, the body of the second motor 33 is mounted on the upper surface of the digging shovel 321 bracket. A transmission belt is fitted onto the output end of the rotating shaft 32 and the second motor 33. The second motor 33 drives the rotating shaft 32 to rotate through the transmission belt, thereby performing digging work. The support rotating hydraulic cylinder 34 has its cylinder end rotatably mounted on the car body 10, and its telescopic end rotatably mounted on the top of the digging shovel 321 support; the digging shovel 321 is arranged in the middle, left and right ends of the rotating shaft 32; there is a gap between the digging shovel 321 in the middle and the digging shovels 321 on the left and right, and the width of the gap is greater than the width of the rail; the middle one is used to remove sand and soil in the middle of the two rails, and the left and right ends are used to remove sand and soil on both sides of the rails.

[0028] Based on the above structure, such as Figure 4 lower half and Figure 5 As shown in the upper part, the telescopic end of the hydraulic cylinder 34 of the support extends, so that when the support of the digging shovel 321 rotates downward to its limit position, the bottom end of the digging shovel 321 is lower than the bottom of the vehicle body 10, and the track is placed in the gap between the middle digging shovel 321 and the left and right digging shovels 321. At this time, digging work can be carried out; Figure 5 lower half and Figure 4 As shown in the upper part, the telescopic end of the support rotating hydraulic cylinder 34 retracts, so that when the support of the digging shovel 321 rotates upward to the limit position, the bottom of the digging shovel 321 is higher than the bottom of the vehicle body 10. At this time, the pillow changing car can move back and forth. Based on a further improvement to the above structure, the shovel groove 322 of the digging shovel 321 rotates gradually towards the edge of the rotating shaft 32, with the center of the rotating shaft 32 as the center, and the direction of rotation is opposite to the direction of rotation of the rotating shaft 32, such as... Figure 15 As shown, this structure forms a pointed shovel 321 in the middle of the rotating shaft 32. As the rotating shaft 32 rotates, the pointed shovel 321 in the middle will first dig into the sand. The sand will enter the shovel groove 322. As the sand and soil are squeezed against each other and the rotating shaft continues to rotate, the sand and soil will move along the shovel groove 322 to both sides of the rotating shaft. More intuitively, the shape of the shovel groove 322 and the rotation of the rotating shaft will force the part of the shovel 321 in contact with the sand and soil to switch from the middle of the rotating shaft to both ends, forcing the sand and soil to accumulate towards the vehicle body 10 and also to the sides.

[0029] The excavation mechanism 30 also includes: The connecting bracket 35 is fixedly connected at its rear end to the front end of the vehicle body 10, such as... Figure 15 , Figure 2 and Figure 3 As shown, the connecting frame 35 is a long strip structure with its rear end fixed to the vehicle body 10 and its front end passing through the support of the digging shovel 321. A retaining plate 36 is rotatably mounted on the front end of the connecting frame 35; The hydraulic cylinder 37 is pushed. The cylinder end of the hydraulic cylinder 37 is located inside the connecting frame 35 and is rotatably mounted on the inner wall of the connecting frame 35. The telescopic end can extend out of the front end of the connecting frame 35 and is rotatably connected to the retaining plate 36. The bottom of the retaining plate 36 is provided with a clearance groove 361 that fits the rail. The soil-shoveling mechanism 30 also includes: a clearance groove 314 is provided at the position corresponding to the soil-shoveling bracket 31 and the connecting frame 35. When the extension end of the hydraulic cylinder 37 is pushed out, the soil-blocking plate 36 is flipped outward to the limit position, and the connecting frame 35 is located in the clearance groove 314. Based on the above structure, when the extension end of the hydraulic cylinder 37 is pushed out, the retaining plate 36 is flipped outward to its limit position, and the bottom of the retaining plate 36 is higher than the bottom of the car body 10. At this time, the car body 10 can move. When the extension end of the hydraulic cylinder 37 is pushed back, the retaining plate 36 is flipped inward to its limit position, and the rail is placed in the clearance groove 361. At this time, when the rotating shaft 32 rotates, it will pile up sand and soil towards the retaining plate 36. After the replacement of the sleeper is completed, the car body 10 moves forward and can backfill the piled sand and soil into the pit dug by the digging shovel 321.

[0030] Furthermore, the vehicle body 10 of this application is also equipped with an interconnected controller and operating system. The operating system is installed in the driver's cab 13 on the vehicle body 10. The driver inputs commands to the controller through the operating system, and the controller controls specific components that perform actions according to the commands. The specific components connected to the controller include a track assembly 14, a gripper hydraulic cylinder 28, a steering hydraulic cylinder 11, a first lifting hydraulic cylinder 252, a second lifting hydraulic cylinder 262, a third hydraulic cylinder 241, a first motor 272 (if the lateral movement assembly 27 adopts the second embodiment, the first motor 272 is replaced by a liner moving hydraulic cylinder 274), a second motor 33, a bracket rotating hydraulic cylinder 34, a pushing hydraulic cylinder 37, a first clamping assembly 25, and a second clamping assembly 26, all installed at the bottom of the vehicle body 10. Based on the above structure, a camera assembly is also installed on the support frame 24. The camera assembly is used to acquire real-time video images of the first gripper 251 and the second gripper 261 and transmit them back to the screen in the cab 13, so that the driver can observe the gripping status of the first gripper 251 and the second gripper 261 and facilitate operation.

[0031] The driver can perform the following actions on the vehicle body 10 through the operating system to complete specific tasks: 1. The controller moves on the sleeper via the track assembly 14 to the position of the sleeper to be replaced.

[0032] II. The sleeper-changing mechanism 20 clamps the sleeper to be replaced: The controller controls the extension end of the steering hydraulic cylinder 11 to extend, pushing the steering component to rotate, thus rotating the boom 21 so that it faces the front of the vehicle body 10, as shown. Figure 7 As shown, the boom 21 and stick 22 are adjusted to move downwards toward the sleeper to be replaced, and the first gripper 251 is operated to open and clamp the sleeper to be replaced. During this process, the driver uses the image transmitted back by the camera assembly to assist in clamping.

[0033] 3. Excavate the sand and soil under the sleepers to be replaced: Before excavation begins, the controller needs to retract the telescopic end of the hydraulic cylinder 37, causing the retaining plate 36 to rotate downwards. Figure 2As shown, the controller controls the extension end of the hydraulic cylinder 34 of the control bracket to extend, and controls the soil-digging bracket 31 to rotate downward, so that when the soil-digging shovel 321 bracket rotates downward to the limit position, the bottom end of the soil-digging shovel 321 is lower than the bottom of the vehicle body 10, and the track is placed in the gap between the soil-digging shovel 321 in the middle and the soil-digging shovels 321 on the left and right sides. At this time, the second motor 33 can be started to make the rotating shaft 32 rotate counterclockwise, so that the sand and soil can accumulate in front of the retaining plate 36. As a preferred embodiment, before the soil-digging work is carried out, it is also necessary to operate the sleeper replacement mechanism 20 to clamp the sleeper to be replaced, and ensure that the first gripper 251 clamps the sleeper to be replaced before the soil-digging work is carried out (after the soil-digging work is completed, the on-site staff can disassemble and separate the sleeper from the track).

[0034] 4. Remove the old sleepers to be replaced: a. In the case where the transverse component 27 adopts the first embodiment: like Figure 13 As shown, after the first gripper 251 grips the sleeper, the controller controls the extension end of the first lifting hydraulic cylinder 252 to extend, causing the first gripping assembly 25 to move downwards while gripping the sleeper (simultaneously, the controller controls the extension end of the second lifting hydraulic cylinder 262 to extend, causing the second gripping assembly 26 to move downwards while gripping the sleeper to the same height). The first motor 272 drives the transmission shaft 2711 to rotate, causing the transmission belt 2712 on the first gripper 251 to move, moving the sleeper towards the second gripper 261. At this time, the second gripper 261 can be in an open state. When the sleeper moves into the effective gripping range of the second gripper 261, the second gripper 261 clamps the sleeper. The first motor 272 on the second gripper 261 drives the transmission shaft 2711 to rotate, causing the transmission belt 2712 on the second gripper 261 to move, pulling the sleeper to the middle of the second gripper 261. At this time, the controller controls the extension end of the third hydraulic cylinder 241 to extend, causing the rotating frame 23 to deflect. Figure 14 As shown, the second gripper 261 holds the sleeper and deflects it out of the track range. Then, the extension end of the second lifting hydraulic cylinder 262 is controlled to extend. The second gripping assembly 26 moves upward until the old sleeper is at or above the ground level. At this time, the first motor 272 continues to drive the transmission shaft 2711 to rotate, so that the sleeper can be transported to the side of the car body 10. b. In the case where the transverse component 27 adopts the second embodiment: When the first gripper 251 clamps the sleeper, the controller controls the extension end of the first lifting hydraulic cylinder 252 to extend, causing the first clamping assembly 25 to clamp the sleeper and move downwards (simultaneously, the controller controls the extension end of the second lifting hydraulic cylinder 262 to extend, causing the second clamping assembly 26 to clamp the sleeper and move downwards to the same height). Since the surface of the sliding clamping liner 273 is in contact with the side of the sleeper, the operator controls the extension end of the liner moving hydraulic cylinder 274 to extend and retract, causing the sliding clamping liner 273 to move towards the second gripper 261. Combined with the clamping of the first gripper 251, the sleeper can be... The sleeper is fed towards the second gripper 261, and the telescopic end of the hydraulic cylinder 274 controlling the movement of the liner moves, causing the sliding clamping liner 273 on the second gripper 261 to move to its limit position closest to the first gripper 251. The second gripper 261 is then controlled to be in an open state. When the sleeper reaches the effective clamping range of the second gripper 261, the second gripper 261 clamps again, and the first gripper 251 is controlled to open, so that the surface of the sliding clamping liner 273 on the second gripper 261 is in contact with the side of the sleeper. At this time, the telescopic end of the third hydraulic cylinder 241 is extended, causing the rotating frame 23 to deflect. Figure 14 As shown, the second gripper 261 holds the sleeper and deflects it outside the rail range. Then, the extension end of the second lifting hydraulic cylinder 262 is controlled to extend, and the second gripping assembly 26 moves upward so that the old sleeper is at or above the ground level. The extension end of the liner moving hydraulic cylinder 274 is controlled to drive the sliding gripping liner 273 on the second gripper 261 to the extreme position furthest from the first gripper 251. The sleeper can then be moved to a position away from the rail. Then, the second gripper 261 is released, and the sleeper can be transported to the side of the car body 10. V. The sleeper-changing mechanism 20 clamps the sleepers on the sleeper storage rack 12: The controller retracts the telescopic end of the steering hydraulic cylinder 11, pulling the steering component to rotate, causing the boom 21 to rotate 90°. This controls the opening of the grippers of the first clamping assembly 25, clamping the sleepers on the sleeper storage rack 12. After clamping, the new sleeper is moved laterally from the first gripper 251 to the second gripper 261 via the lateral movement assembly 27 (e.g., ...). Figure 16 (as shown in the figure); Furthermore, the sleeper storage rack 12 can also move forward to the effective clamping position of the second gripper 261 (not shown in the figure). By controlling the second gripper 261 to open, the sleeper can also be clamped directly by the second gripper 261. 6. Move the new sleepers to the designated position: After the second gripper 261 clamps the new sleeper, the controller controls the extension end of the steering hydraulic cylinder 11 to extend, pulling the steering component to rotate, causing the boom 21 to rotate 90°. Then, the controller controls the extension end of the third hydraulic cylinder 241 to extend, causing the rotating frame 23 to deflect, so that the sleeper clamped on the second gripper 261 is in an inclined state to avoid collision between the sleeper and the rail. The controller controls the boom 21 and the stick 22 to move the entire support frame 24 downward, extending the new sleeper into the pit dug by the excavation mechanism 30. Then, the controller controls the extension end of the third hydraulic cylinder 241 to retract, so that the deflected sleeper is straightened. The new sleeper is moved laterally from the second gripper 261 to the position of the first gripper 251 by the lateral movement component 27, so that the workers can go to fix the sleeper to the rail. It is worth noting that: since the old sleeper has been moved to the side of the car body 10 during operation four, and moved a considerable distance by the lateral movement component 27, the new sleeper held on the second gripper 261 will not touch the old sleeper next to it. Even in some extreme cases, if the position of the old sleeper is still too close, the controller can also control the boom 21 and stick 22 to extend forward a distance to bypass the old sleeper next to it, and then perform the above steps to replace it. The operator can control the boom 21 and stick 22 to flexibly move the sleeper replacement mechanism 20 according to the actual situation.

[0035] 7. Backfill the pits; The controller controls the track assembly 14 to move the vehicle body 10 forward, and pushes the pile of soil accumulated by the digging shovel 321 in the second operation into the pit through the soil retainer 36 for backfilling.

[0036] According to the above structure, the first clamping component 25 is responsible for securing the sleeper and transferring it to the second clamping component 26, while the second clamping component 26 is used to clamp the new sleeper and discard the old sleeper. The two clamping components cooperate with each other and respond to each other to realize the replacement of the sleeper.

Claims

1. A soil-scraping mechanism for a pillow-changing vehicle, characterized in that: The soil-scraping mechanism of the pillow-changing vehicle includes: a soil-scraping mechanism (30) installed on the body (10) of the pillow-changing vehicle. The soil-cutting mechanism (30) includes: Soil-shoveling support (31), the rear end of which is rotatably mounted on the front end of the vehicle body (10), the soil-shoveling support (31) having a first support (311), a second support (312) and a third support (313), the first support (311), the second support (312) and the third support (313) all having coaxial through holes; A rotating shaft (32) is rotatably mounted on a through hole. The outer circumferential surface of the rotating shaft (32) has a digging shovel (321) arranged along its circumference. The lip of the digging shovel (321) faces the rotation direction of the rotating shaft (32). The first support (311) is located in the middle of the soil-digging support (31) and there is a pair of them. A first gap is formed between the two first supports (311). The second support (312) extends to the left side of the vehicle body (10) and forms a second gap with the first support (311). The third support (313) extends to the right side of the vehicle body (10) and forms a third gap with the first support (311). The digging shovel (321) is arranged in the middle, left and right ends of the rotating shaft (32), corresponding to the first spacing, the second spacing and the third spacing respectively.

2. The soil-scraping mechanism of the pillow-changing vehicle according to claim 1, characterized in that: The soil-cutting mechanism (30) also includes: The second motor (33) is mounted on the upper surface of the soil-digging bracket (31). The rotating shaft (32) and the output end of the second motor (33) are fitted with a transmission belt. The second motor (33) drives the rotating shaft (32) to rotate through the transmission belt.

3. The soil-scraping mechanism of the pillow-changing vehicle according to claim 1, characterized in that: The soil-cutting mechanism (30) also includes: The support rotating hydraulic cylinder (34) has its cylinder end rotatably mounted on the vehicle body (10) and its telescopic end rotatably mounted on the top of the soil-digging support (31). The telescopic end of the hydraulic cylinder (34) of the bracket extends, so that when the soil-digging bracket (31) rotates downward to the limit position, the bottom end of the soil-digging shovel (321) is lower than the bottom of the vehicle body (10), and the track is placed in the gap between the soil-digging shovel (321) in the middle and the soil-digging shovels (321) on the left and right sides. When the extension end of the hydraulic cylinder (34) of the support retracts, the bottom end of the digging support (31) is higher than the bottom of the vehicle body (10) when the digging support (31) rotates upward to the limit position.

4. The soil-scraping mechanism of the pillow-changing vehicle according to claim 3, characterized in that: The shovel groove (322) of the shovel (321) rotates gradually toward the edge of the rotating shaft (32) with the middle part of the rotating shaft (32) as the center, and the direction of rotation is opposite to the direction of rotation of the rotating shaft (32).

5. The soil-scraping mechanism of the pillow-changing vehicle according to claim 4, characterized in that: The soil-cutting mechanism (30) also includes: A connecting frame (35) is fixedly connected at its rear end to the front end of the vehicle body (10); A retaining plate (36) is rotatably mounted on the front end of the connecting frame (35); The hydraulic cylinder (37) is pushed, with its cylinder end located inside the connecting frame (35) and rotatably mounted on the inner wall of the connecting frame (35). Its telescopic end can extend out of the front end of the connecting frame (35) and is rotatably connected to the retaining plate (36). The bottom of the retaining plate (36) is provided with a clearance groove (361) that fits the rail. When the extension end of the hydraulic cylinder (37) extends, the bottom end of the retaining plate (36) is higher than the bottom of the vehicle body (10) when the retaining plate (36) is flipped outward to the limit position. When the telescopic end of the hydraulic cylinder (37) retracts, the retaining plate (36) flips inward to its limit position, and the rail is placed in the clearance groove (361).

6. The soil-scraping mechanism of the pillow-changing vehicle according to claim 5, characterized in that: The soil-digging bracket (31) is provided with a clearance groove (314) at the position corresponding to the connecting frame (35). When the extension end of the pushing hydraulic cylinder (37) extends, the soil retaining plate (36) is flipped outward to the limit position, and the connecting frame (35) is located in the clearance groove (314).

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