A device and method for turning and drying earthwork.

Abstract

This application relates to the field of earthwork turning and drying, and in particular to an earthwork turning and drying device and method, including an earthwork turning and drying device and a turning and drying method. The turning and drying device includes a rake mounted on a vehicle body, a grabbing mechanism, a grabbing drive, a crushing mechanism, a crushing mechanism movement drive, a drying mechanism, and a turning mechanism. The turning and drying method includes screening, grabbing large soil clods, crushing soil clods, drying, primary drying, mixing, and secondary drying. The earthwork turning and drying device provided by this application uses a rake to screen the earthwork, uses a crushing mechanism to crush large soil clods, and uses a drying mechanism to dry the earthwork, which facilitates the evaporation of moisture in the earthwork and improves the turning and drying efficiency.

Description

Technical Field

[0001] This application relates to the field of earthwork turning and drying, and in particular to an earthwork turning and drying device and method. Background Technology

[0002] During road construction, the excavated subgrade soil can be used as fertilizer. However, during rainy weather, the soil becomes too wet due to prolonged soaking, resulting in excessive moisture content that not only fails to meet usage requirements but also increases transportation costs.

[0003] The most common method for removing moisture from excavated soil is to turn it over and leave it to dry by the roadside, relying on evaporation to reduce its water content. However, since the excavated roadbed soil usually contains many hard clods, direct drying makes it difficult for the moisture inside these clods to evaporate. This is especially true during rainy weather when the air is humid, requiring more time to reduce the moisture content, resulting in low drying efficiency. Summary of the Invention

[0004] To improve the efficiency of soil turning and drying, this application provides a soil turning and drying device and method.

[0005] The earthwork turning and drying device and method provided in this application adopts the following technical solution:

[0006] A soil turning and drying device and method includes a vehicle body, on which are mounted a rake claw, a gripping mechanism, a gripping drive, a crushing mechanism, a crushing mechanism movement drive, and a drying mechanism. The rake claw is located in the middle of the vehicle body for screening soil clods of different sizes. The bottom of the rake claw is provided with several teeth, the arrangement of which is perpendicular to the direction of travel of the vehicle body, and there is a certain gap between adjacent teeth. The gripping mechanism is used to grip large soil clods screened by the rake claw. The crushing mechanism is located in front of the rake claw. The gripping drive is used to drive the gripping mechanism to move between the rake claw and the crushing mechanism. The crushing mechanism is used to crush the soil clods. The crushing mechanism movement drive is used to drive the crushing mechanism away from or towards the gripping mechanism. The drying mechanism is located at the rear end of the rake claw to dry the soil.

[0007] By adopting the above technical solution, during the vehicle's movement, the rake claws intercept larger clods of soil in front of the stop teeth, and then the grabbing mechanism picks up the clods in front of the stop teeth. The crushing mechanism's drive moves it away from the rake claws to facilitate the grabbing mechanism's movement. When the grabbing mechanism moves to the crushing mechanism, it returns to its original position, and the grabbing mechanism throws larger clods of soil towards it, where the crushing mechanism crushes them. The crushed soil falls to the ground and is then screened again by the rake claws. While the vehicle is moving, the drying mechanism dries the soil on the ground, accelerating the evaporation of moisture. The treated soil is then left to dry in place, further reducing its moisture content and improving drying efficiency.

[0008] As the rake moves, the guide teeth penetrate the soil, effectively turning it over and bringing the soil to the surface. The soil is then dried by the drying unit and air-dried, accelerating the dewatering process. Furthermore, the guide teeth intercept larger clods, allowing the crushing unit to break them up while leaving smaller clods in place. This results in fast processing speed, high efficiency, and the ability to process large quantities of soil at once, further improving overall efficiency.

[0009] Optionally, the gripping mechanism includes a first cylinder, a sleeve, a drive rod, a rotating claw, and a net. A fixed shaft is fixed to the vehicle body, and a mounting rod is rotatably connected to the fixed shaft. The sleeve is rotatably connected to the mounting rod via the rotating shaft. The drive rod is slidably connected inside the sleeve, and the first cylinder is mounted on the sleeve to drive the drive rod to slide. Multiple annular convex teeth are evenly arranged along the axial direction on the peripheral wall of the drive rod. Multiple rotating claws are provided, each of which is rotatably connected to the sleeve and distributed along the circumference of the sleeve. Adjacent rotating claws are connected by a net. Each rotating claw has a gear portion that can mesh with the annular convex teeth at one end near the drive rod.

[0010] By adopting the above technical solution, the first cylinder drives the drive rod to slide within the sleeve. During the movement of the drive rod, the gear part on the rotating claw meshes with the annular convex tooth, so all the rotating claws can rotate synchronously, thus realizing the opening and closing of the rotating claws. When it is necessary to grab soil clods on the ground, the drive rod is first moved downward to open the rotating claws, and then the drive rod moves upward to close the rotating claws and grab the soil clods. Since the net connects the adjacent rotating claws, it can hold the grabbed soil clods inside. When the rotating claws move to the crushing mechanism, the drive rod moves downward to drive the rotating claws to open, so that the soil clods in the net can be thrown into the crushing mechanism.

[0011] Optionally, the gripping drive includes a drive wheel, a drive sprocket, a driven sprocket, a synchronizing chain, a driven wheel, and a rotating wheel. A fixed wheel is coaxially fixed on the fixed shaft, and the rotating wheel is coaxially fixed on the rotating shaft. The drive wheel, drive sprocket, driven sprocket, and driven wheel are all rotatably connected to the mounting rod. The drive wheel and drive sprocket are coaxially connected, and the driven sprocket and driven wheel are coaxially connected. The drive wheel meshes with the fixed wheel, and the driven wheel meshes with the rotating wheel. The synchronizing chain is wound around the drive sprocket and driven sprocket.

[0012] By adopting the above technical solution, since the fixed shaft is fixed to the vehicle body and the fixed wheel is fixed to the fixed shaft, when the driving wheel rotates, the driving wheel can rotate around the circumference of the fixed wheel, and drive the mounting rod to rotate around the fixed shaft, thus realizing the transfer of the gripping mechanism. The driving sprocket rotates synchronously with the driving wheel, and under the transmission action of the synchronous chain, the driven sprocket rotates synchronously with the driving sprocket, and then drives the driven wheel to rotate. Finally, through the meshing of gears, the rotating wheel rotates with the driven wheel in the opposite direction, that is, the driving wheel and the rotating wheel rotate in opposite directions. Therefore, when the mounting rod rotates towards the crushing mechanism, the rotating wheel drives the fixed shaft to rotate in the opposite direction at the same speed. During the rotation of the mounting rod, the gripping mechanism is always facing downwards. When the mounting rod stops moving, the gripping mechanism is exactly above the crushing mechanism. At this time, controlling the gripping mechanism to drop the soil clods can crush the protrusions.

[0013] Optionally, the crushing mechanism includes a crushing box and two crushing rollers. The crushing box is slidably connected to the vehicle body, and the crushing rollers are rotatably disposed inside the crushing box. The two crushing rollers are horizontal and parallel to each other. The crushing box has an opening at the top and a discharge port at the bottom.

[0014] By employing the above technical solution, the grabbing mechanism throws down soil blocks, which fall from the opening at the top of the crushing box between two crushing rollers. The crushing rollers reverse direction and crush the soil blocks. The crushed soil blocks then fall downwards into the feed inlet and finally land back on the ground.

[0015] Optionally, the crushing mechanism movement drive includes a second cylinder, one end of which is fixed to the vehicle body and the other end is connected to the crushing box.

[0016] By adopting the above technical solution, the second cylinder can drive the crushing box to slide on the vehicle body during its extension and retraction. When the grabbing mechanism moves, the second cylinder drives the crushing box to move forward, allowing the grabbing mechanism to move smoothly above the crushing box. Subsequently, the second cylinder drives the crushing box back to its original position, directly below the grabbing mechanism, to catch the soil clods. Finally, the second cylinder drives the crushing box forward again, facilitating the grabbing mechanism to return to its original position.

[0017] Optionally, the drying mechanism includes a connecting pipe that is connected to the vehicle's exhaust pipe, and the connecting pipe is also provided with an air outlet facing the ground.

[0018] By adopting the above technical solution, the exhaust gas from the vehicle body is introduced into the connecting pipe and blown to the ground through the air outlet. The heat of the exhaust gas is used to dry the soil, which can improve the drying effect on the one hand, and play a role in resource reuse on the other hand.

[0019] A method for turning and drying earthwork includes the following steps:

[0020] S1: Screening. The rake claws move forward with the vehicle body. Small soil clods can pass through the gaps between adjacent baffle teeth, while larger soil clods are intercepted by the baffle teeth in front of them and move forward with the baffle teeth.

[0021] S2: Grab larger clods of soil. The grabbing drive drives the grabbing mechanism to grab larger clods of soil in front of the stop teeth. The crushing mechanism moving drive drives the crushing mechanism away from the rake claws. The grabbing drive drives the grabbing mechanism to move towards the crushing mechanism. The grabbing mechanism throws the clods of soil into the crushing mechanism.

[0022] S3: Crush soil clods. The crushing mechanism crushes the soil clods, and the crushed soil falls back to the ground. The crushed soil falls to the front of the rake claws. When the vehicle is moving, the rake claws perform secondary screening of the crushed soil and continue to intercept larger soil clods in front of the baffle teeth.

[0023] S4: Drying, the drying mechanism dries the soil on the ground;

[0024] S5: Drying.

[0025] Optionally, the earthwork turning and drying device is also equipped with a soil turning mechanism. After step S5, the soil turning mechanism turns the soil again and then dries it again.

[0026] By adopting the above technical solution, the soil that has been dried is turned over again, so that the soil that was originally at the bottom is turned over to the top. After drying again, the evaporation of moisture from the soil can be accelerated.

[0027] Optionally, while the soil turning mechanism is turning the soil, the drying mechanism is drying the soil.

[0028] By adopting the above technical solution, the soil is dried again while being turned over, which further accelerates the evaporation of moisture and improves the processing efficiency.

[0029] Optionally, the soil turning mechanism includes a housing, a third cylinder, a turning shaft, and turning rods. The housing is mounted on the vehicle body, the turning shaft is rotatably connected inside the housing, the third cylinder is mounted inside the housing to drive the turning shaft to rise and fall, and multiple turning rods are provided on the peripheral wall of the turning shaft. The axis of the turning shaft is perpendicular to the direction of travel of the vehicle body.

[0030] By adopting the above technical solution, when the vehicle is moving, the third cylinder drives the mixing shaft to descend, so that the end of the mixing rod can be inserted into the soil. Then, the mixing shaft is driven to rotate, and the mixing rod is used to mix the soil, thereby smoothly turning the soil at the bottom to the top and accelerating the evaporation of its moisture.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. Larger soil clods are crushed by a crushing mechanism, then dried by a drying mechanism, and then air-dried and finally turned over. This not only accelerates the evaporation of moisture in the soil, but also allows for the processing of large quantities of soil at once, resulting in high processing efficiency.

[0033] 2. By setting a gripping drive so that the gripping mechanism can rotate in the opposite direction at the same speed during the rotation of the mounting rod, the gripping mechanism can always face downwards, making it easier to throw soil into the crushing mechanism. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0035] Figure 2 This is a schematic diagram of the gripping mechanism and gripping driver in Embodiment 1 of this application;

[0036] Figure 3 This is a schematic diagram of the gripping mechanism in Embodiment 1 of this application;

[0037] Figure 4 This is a schematic diagram of the crushing mechanism in Embodiment 1 of this application;

[0038] Figure 5 This is a schematic diagram of the soil-turning mechanism in Embodiment 1 of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Vehicle body; 2. Rake claw; 3. Grabbing mechanism; 4. Grabbing drive; 5. Crushing mechanism; 6. Crushing mechanism movement drive; 7. Drying mechanism; 8. Turning mechanism; 9. Stop tooth; 10. First cylinder; 11. Sleeve; 12. Drive rod; 13. Rotating claw; 14. Net bag; 15. Fixed shaft; 16. Mounting rod; 17. Rotating shaft; 18. Annular convex tooth; 19. Gear section; 20. Drive wheel; 21. Drive sprocket; 22. Driven sprocket; 23. Synchronous chain; 24. Driven wheel; 25. Rotating wheel; 26. First motor; 27. Fixed wheel; 28. Crushing box; 29. ​​Crushing roller; 30. Second motor; 31. Discharge port; 32. Second cylinder; 33. Guide plate; 34. Connecting pipe; 35. Outer shell; 36. Third cylinder; 37. Tilting shaft; 38. Tilting rod; 39. Third motor. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0041] Example 1:

[0042] A soil turning and drying device, referring to Figure 1The system includes a vehicle body 1, on which are mounted a rake claw 2, a gripping mechanism 3, a gripping drive 4, a crushing mechanism 5, a crushing mechanism movement drive 6, a drying mechanism 7, and a soil-turning mechanism 8. The rake claw 2 is located in the middle of the vehicle body 1 and is used to screen soil clods of different sizes. The bottom of the rake claw 2 has several guide teeth 9, arranged perpendicular to the direction of travel of the vehicle body 1, with a certain gap between adjacent guide teeth 9, allowing them to insert into the soil. The gripping mechanism 3 is used to grip the screened large soil clods. The crushing mechanism 5 is located in front of and above the rake claw 2 and is used to crush the soil clods. The gripping drive 4 drives the gripping mechanism 3 to move between the rake claw 2 and the crushing mechanism 5. The crushing mechanism movement drive 6 drives the crushing mechanism 5 to move back and forth to move away from or closer to the gripping drive 4. The drying mechanism 7 is located at the rear end of the rake claw 2 to dry the soil, and the soil-turning mechanism 8 is used to turn and mix the soil.

[0043] The vehicle body 1 moves forward, and the stop teeth 9 intercept larger clods of soil, ensuring that all larger clods are positioned in front of the stop teeth 9. The crushing mechanism drive 6 drives the crushing mechanism 5 forward, and then the grabbing mechanism 3 moves to the front of the stop teeth 9 to grab the soil clods. The grabbing drive 4 drives the grabbing mechanism 3 to move towards the crushing mechanism 5. When the grabbing mechanism 3 moves above the crushing mechanism 5, the crushing mechanism 5 moves backward to directly below the grabbing mechanism 3. At this point, the grabbing mechanism 3 releases the soil clods, which then enter the crushing mechanism 5 for crushing. Simultaneously, the drying mechanism 7 blows air onto the soil to remove moisture, completing the first treatment. After a period of drying, the soil turning mechanism 8 turns the soil, bringing the bottom layer to the top layer and accelerating the evaporation of moisture.

[0044] Reference Figure 2 and Figure 3 The gripping mechanism 3 includes a first cylinder 10, a sleeve 11, a drive rod 12, rotating claws 13, and a net 14. A fixed shaft 15 is horizontally fixed on the vehicle body 1, perpendicular to the direction of travel of the vehicle body 1. A mounting rod 16 is rotatably connected to the fixed shaft 15, and the sleeve 11 is rotatably connected to the end of the mounting rod 16 away from the fixed shaft 15 via a rotating shaft 17. The drive rod 12 is slidably connected inside the sleeve 11, and the first cylinder 10 is mounted on the sleeve 11 to drive the drive rod 12 to slide. Multiple annular teeth 18 are evenly arranged along the axial direction on the peripheral wall of the drive rod 12. Multiple rotating claws 13 are provided, each rotating claw 13 is rotatably connected to the sleeve 11, and each rotating claw 13 is evenly distributed along the circumference of the sleeve 11. Adjacent rotating claws 13 are connected by a net 14, and each rotating claw 13 has a gear part 19 that can mesh with the annular teeth at the end near the drive rod 12.

[0045] When the first cylinder 10 is working, the annular convex tooth 18 moves axially along the sleeve 11 and meshes with the gear part 19 on each rotating claw 13 in sequence, thereby driving the rotating claw 13 to rotate, thereby causing the rotating claw 13 to close or open, and thus grab or put down the soil clod.

[0046] The gripping drive 4 includes a drive wheel 20, a drive sprocket 21, a driven sprocket 22, a synchronous chain 23, a driven wheel 24, a rotating wheel 25, and a first motor 26. A fixed wheel 27 is coaxially fixed on a fixed shaft 15, and the rotating wheel 25 is coaxially fixed on a rotating shaft 17. The drive wheel 20, drive sprocket 21, driven sprocket 22, and driven wheel 24 are all rotatably connected to a mounting rod 16. The drive wheel 20 is coaxially connected to the drive sprocket 21, and the driven sprocket 22 is coaxially connected to the driven wheel 24. The drive wheel 20 meshes with the fixed wheel 27, and the driven wheel 24 meshes with the rotating wheel 25. The synchronous chain 23 is wound around the drive sprocket 21 and the driven sprocket 22. The first motor 26 is mounted on the mounting rod 16 to drive the drive wheel 20 to rotate.

[0047] The first motor 26 drives the drive wheel 20 and the drive sprocket 21 to rotate synchronously. The drive wheel 20 meshes with the fixed wheel 27, causing the mounting rod 16 to rotate around the fixed shaft 15. At the same time, under the transmission action of the synchronous chain 23, the driven sprocket 22 drives the driven wheel 24 to rotate. Furthermore, the driven wheel 24 meshes with the rotating wheel 25, causing the rotating wheel 25 to drive the rotating shaft 17 and the driven wheel 24 to rotate in opposite directions.

[0048] To ensure that the rotation speed of the rotating shaft 17 and the mounting rod 16 are equal, the specifications of the driving wheel 20, the fixed wheel 27, the driven wheel 24 and the rotating wheel 25 are the same, and the specifications of the driving sprocket 21 and the driven sprocket 22 are the same.

[0049] Reference Figure 4 The crushing mechanism 5 includes a crushing box 28 and two crushing rollers 29. The crushing box 28 is slidably connected to the vehicle body 1. The crushing rollers 29 are rotatably disposed inside the crushing box 28. The two crushing rollers 29 are horizontal and parallel to each other. The crushing box 28 is also equipped with a second motor 30 for driving the crushing rollers 29 to rotate. The crushing box 28 has an opening at the upper end and a discharge port 31 at the lower end. The crushing mechanism movement drive 6 includes a second cylinder 32. The second cylinder 32 is horizontally disposed along the traveling direction of the vehicle body 1. One end of the second cylinder 32 is fixed to the vehicle body 1, and the other end is connected to the crushing box 28.

[0050] The second motor 30 drives the two crushing rollers 29 to rotate in opposite directions, which can crush the soil clods that fall between the two crushing rollers 29. The crushed soil falls directly to the ground from the discharge port 31.

[0051] In order to enable the gripping mechanism 3 to smoothly put the soil into the gap between the two crushing rollers 29, two inclined guide plates 33 are also provided at the opening of the crushing box 28. One end of the guide plate 33 is connected to the crushing box 28, and the other end is connected to the gap between the two crushing rollers 29.

[0052] Reference Figure 1 The drying mechanism 7 includes a connecting pipe 34, which is connected to the vehicle's exhaust pipe and is horizontally arranged perpendicular to the vehicle's direction of travel. The connecting pipe 34 is also provided with an air outlet facing the ground.

[0053] Reference Figure 5 The soil-turning mechanism 8 includes a housing 35, a third cylinder 36, a turning shaft 37, and turning rods 38. The housing 35 is mounted on the vehicle body 1. The turning shaft 37 is rotatably connected inside the housing 35. The third cylinder 36 is installed inside the housing 35 to drive the turning shaft 37 to rise and fall. Multiple turning rods 38 are provided on the peripheral wall of the turning shaft 37. The axis of the turning shaft 37 is perpendicular to the travel direction of the vehicle body 1 and is horizontally arranged. The housing 35 is also equipped with a third motor 39 for driving the turning shaft 37 to rotate.

[0054] When mixing the soil, the third cylinder 36 drives the mixing shaft 37 to descend until the end of the mixing rod 38 can be inserted into the soil. The third motor 39 is started to drive the mixing shaft 37 to rotate, driving the mixing rod 38 to insert into the soil in sequence and then rotate out, thus turning the bottom layer of soil to the top layer and realizing the mixing effect.

[0055] Example 2:

[0056] A method for turning and drying earthwork, employing the aforementioned turning and drying device, includes the following steps:

[0057] S1: Screening, the rake claw 2 moves forward with the vehicle body 1, small soil clods can pass through the gap between adjacent baffle teeth 9, and larger soil clods are intercepted by the baffle teeth 9 in front of the baffle teeth 9 and move forward with the baffle teeth 9.

[0058] S2: To grab larger clods of soil, the first motor 26 drives the drive wheel 20 to rotate, causing the mounting rod 16 to rotate downwards until the rotating claw 13 is in front of the stop tooth 9. This drives the first cylinder 10 to extend, and through the meshing of the annular convex tooth 18 and the gear part 19, it drives the rotating claw 13 to open. Subsequently, the first cylinder 10 retracts, causing the rotating claw 13 to close, grabbing the larger clods of soil, so that the net bag 14 can catch the larger clods of soil inside the net bag 14. The second cylinder 32 drives the crushing box 28 to move forward, the first motor 26 reverses, driving the mounting rod 16 to rotate upwards until it is higher than the crushing box 28 and then stops, and the second cylinder 32 drives the crushing box 28 to move backwards to below the rotating claw 13. The first cylinder 10 extends, driving the rotating claw 13 to open, throwing the larger clods of soil into the crushing mechanism 5;

[0059] S3: Crush soil clods. The second motor 30 drives the two crushing rollers 29 to rotate in opposite directions to crush larger soil clods. The crushed soil falls back to the ground through the discharge port 31. When the vehicle body 1 moves, the rake claw 2 performs secondary screening on the crushed soil and continues to intercept larger soil clods in front of the stop teeth 9.

[0060] S4: Drying, connecting pipe 34 directs the vehicle's exhaust gas to the ground outlet to dry the soil on the ground.

[0061] S5: Drying;

[0062] S6: Turning and mixing. The third cylinder 36 drives the turning shaft 37 to descend until the end of the turning rod 38 can be inserted into the soil. The third motor 39 is started to drive the turning shaft 37 to rotate, turning the dried soil and turning the soil at the bottom to the top.

[0063] S7: Dry in the sun again.

[0064] In step S6, while the soil turning mechanism 8 turns and mixes the soil, the connecting pipe 34 directs the vehicle exhaust to the ground to dry the soil.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A soil turning and drying device, characterized in that: The vehicle includes a body (1), on which are mounted a rake (2), a gripping mechanism (3), a gripping drive (4), a crushing mechanism (5), a crushing mechanism movement drive (6), and a drying mechanism (7). The rake (2) is located in the middle of the body (1) for screening soil clods of different sizes. The bottom of the rake (2) is provided with several baffles (9), the arrangement direction of which is perpendicular to the travel direction of the body (1), and there is a certain gap between adjacent baffles (9). The grabbing mechanism (3) is used to grab large soil clods screened out by the rake claw (2). The crushing mechanism (5) is located in front of the rake claw (2). The grabbing drive (4) is used to drive the grabbing mechanism (3) to move between the rake claw (2) and the crushing mechanism (5). The crushing mechanism (5) is used to crush the soil clods. The crushing mechanism movement drive (6) is used to drive the crushing mechanism (5) away from or close to the grabbing mechanism (3). The drying mechanism (7) is located at the rear end of the rake claw (2) to dry the soil.

2. The earthwork turning and drying device according to claim 1, characterized in that: The gripping mechanism (3) includes a first cylinder (10), a sleeve (11), a drive rod (12), a rotating claw (13), and a net (14). A fixed shaft (15) is fixed on the vehicle body (1), and an mounting rod (16) is rotatably connected to the fixed shaft (15). The sleeve (11) is rotatably connected to the mounting rod (16) via a rotating shaft (17). The drive rod (12) is slidably connected inside the sleeve (11). The first cylinder (10) is located on the sleeve (11) to drive the drive rod (14). 2) Sliding; The drive rod (12) has multiple ring-shaped protrusions (18) evenly arranged along its own axial direction on its peripheral wall; There are multiple rotating claws (13), each rotating claw (13) is rotatably connected to the sleeve (11), and each rotating claw (13) is distributed along the circumference of the sleeve (11). Adjacent rotating claws (13) are connected by a net bag (14). Each rotating claw (13) has a gear part (19) that can mesh with the ring-shaped protrusions (18) at one end near the drive rod (12).

3. The earthwork turning and drying device according to claim 2, characterized in that: The gripping drive (4) includes a drive wheel (20), a drive sprocket (21), a driven sprocket (22), a synchronous chain (23), a driven wheel (24), and a rotating wheel (25). A fixed wheel (27) is coaxially fixed on the fixed shaft (15), and the rotating wheel (25) is coaxially fixed on the rotating shaft (17). The drive wheel (20), drive sprocket (21), driven sprocket (22), and driven wheel (24) are all rotatably connected to the mounting rod (16). The drive wheel (20) is coaxially connected to the drive sprocket (21), and the driven sprocket (22) is coaxially connected to the driven wheel (24). The drive wheel (20) meshes with the fixed wheel (27), and the driven wheel (24) meshes with the rotating wheel (25). The synchronous chain (23) is wound around the drive sprocket (21) and the driven sprocket (22).

4. The earthwork turning and drying device according to claim 1, characterized in that: The crushing mechanism (5) includes a crushing box (28) and two crushing rollers (29). The crushing box (28) is slidably connected to the vehicle body (1). The crushing rollers (29) are rotatably arranged inside the crushing box (28). The two crushing rollers (29) are horizontal and parallel to each other. The crushing box (28) has an opening at the upper end and a discharge port (31) at the lower end.

5. The earthwork turning and drying device according to claim 4, characterized in that: The crushing mechanism moving drive (6) includes a second cylinder (32), one end of which is fixed to the vehicle body (1) and the other end is connected to the crushing box (28).

6. The earthwork turning and drying device according to claim 1, characterized in that: The drying mechanism (7) includes a connecting pipe (34), which is connected to the exhaust pipe of the vehicle body, and the connecting pipe (34) is also provided with an air outlet facing the ground.

7. A method for turning and drying earthwork, characterized in that, The earthwork turning and drying device according to any one of claims 1-6 includes the following steps: S1: Screening, the rake claw (2) moves forward with the vehicle body (1), small soil clods can pass through the gap between adjacent baffle teeth (9), and larger soil clods are intercepted by the baffle teeth (9) in front of the baffle teeth (9) and move forward with the baffle teeth (9). S2: Grab larger clods of soil. Grab drive (4) drives grab mechanism (3) to grab larger clods of soil in front of stop teeth (9). Crushing mechanism move drive (6) drives crushing mechanism (5) away from rake claw (2). Grab drive (4) drives grab mechanism (3) to move toward crushing mechanism (5). Grab mechanism (3) throws clods of soil into crushing mechanism (5). S3: Break the soil blocks. The breaking mechanism (5) breaks the soil blocks. The broken soil falls back to the ground. The broken soil falls to the front of the rake claw (2). When the vehicle body (1) moves, the rake claw (2) performs secondary screening on the broken soil and continues to intercept the larger soil blocks in front of the baffle tooth (9). S4: Drying, the drying mechanism (7) dries the soil on the ground; S5: Drying.

8. The method for turning and drying earthwork according to claim 7, characterized in that: The earthwork turning and drying device is also equipped with a soil turning mechanism (8). After step S5, the soil turning mechanism (8) turns the soil again and dries it again.

9. A method for turning and drying earthwork according to claim 8, characterized in that: While the soil turning mechanism (8) turns and mixes the soil, the drying mechanism (7) dries the soil.

10. A method for turning and drying earthwork according to claim 8, characterized in that: The soil turning mechanism (8) includes a housing (35), a third cylinder (36), a turning shaft (37), and turning rods (38). The housing (35) is mounted on the vehicle body (1). The turning shaft (37) is rotatably connected inside the housing (35). The third cylinder (36) is installed inside the housing (35) to drive the turning shaft (37) to rise and fall. Multiple turning rods (38) are provided on the peripheral wall of the turning shaft (37). The axis of the turning shaft (37) is perpendicular to the travel direction of the vehicle body (1).

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