Vibration soil crushing and leveling device for field road trimming

Abstract

The invention relates to the technical field of engineering machinery, and discloses a vibration soil crushing and leveling device for field road trimming. The device comprises an arc-shaped back plate, an arc-shaped shovel and a crushing lining plate are arranged on the inner side, and an outer elastic connecting beam is connected with a rotating support and a soil crushing roller; the rotary support is provided with a second hydraulic motor, a roller is driven through a planetary gear driving mechanism, a rotary shaft in the roller is provided with an eccentric balancing weight and a torque-adjustable magnetic coupling, the device is connected with a traction carrier through a connecting mechanism comprising an arched beam and a triangular support, and hydraulic lifting, angle adjusting and buffering components are arranged; a spiral scraper is arranged on the outer wall of the roller; the magnetic coupling slips to increase vibration when encountering large blocks of soil and rocks, so that the soil and rocks are prevented from being accumulated, and the working efficiency and the adaptability to complex terrains are improved.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to a vibratory soil-breaking and leveling device for field road repair. Background Technology

[0002] Traditional field road maintenance work typically involves using equipment such as shovels and bulldozers to spread sand, gravel, and soil. Their main function is to scrape and push the paved road surface to achieve a smooth surface.

[0003] However, in existing technologies, these leveling devices often struggle to effectively break up hard obstacles such as soil clods and rocks on field roads, resulting in poor road leveling and potentially causing equipment overload, increased wear and tear, and low operational efficiency. While some devices have attempted to incorporate breaking functions, their breaking effect is often limited. Furthermore, during the breaking process, broken soil and rocks tend to accumulate in front of the equipment, affecting subsequent leveling operations and requiring multiple trips or manual cleanup, further reducing operational efficiency. In addition, when encountering hard obstructions during operation, the rotation speed and breaking capacity of the existing equipment's breaking mechanism are often fixed, making it difficult to adaptively adjust according to actual conditions. This leads to inconsistent and unstable breaking effects, especially under complex working conditions, where insufficient breaking capacity can easily cause jamming or reduced efficiency. Therefore, existing leveling devices for field road repair still have many technical defects and room for improvement in handling hard soil and solving the synergistic efficiency of soil breaking and leveling operations. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that existing field road leveling devices have the disadvantages of poor crushing effect when dealing with hard soil or stones, and low efficiency of crushing and leveling operations. To address this, we propose a vibratory soil crushing and leveling device for field road repair.

[0005] To achieve the above objectives, this application adopts the following technical solution: a vibratory soil-breaking and leveling device for field road repair, comprising an arc-shaped back plate, an arc-shaped shovel and a breaking liner plate being fixedly connected to the arc-shaped inner sidewall of the arc-shaped back plate by M12-M16 bolts, with the arc-shaped shovel located at the front end of the breaking liner plate, and the two seamlessly connected along the arc direction of the arc-shaped back plate; two parallel elastic connecting beams are welded to the arc-shaped outer sidewall of the arc-shaped back plate, the elastic connecting beams being made of 65Mn spring steel, and rotating brackets being fixedly connected to both ends of the beams by shock-absorbing connecting blocks, the rotating brackets being rotatably connected to a soil-breaking roller by a deep groove ball bearing, the length of the soil-breaking roller being consistent with the axial length of the arc-shaped back plate; A second hydraulic motor is bolted to the outer wall of the rotating bracket. The output shaft of the second hydraulic motor is keyed to a gear drive mechanism. The gear drive mechanism includes a main drive disc, planetary gears, a large gear ring, and a central gear. The main drive disc is coaxially fixed to the output shaft of the second hydraulic motor via a coupling. Three evenly distributed planetary gear mounting shafts are provided on the end face of the main drive disc. Each mounting shaft is rotatably connected to one planetary gear via a needle roller bearing. The three planetary gears are symmetrically distributed at 120° around the axis of the main drive disc. A large gear ring meshes with the outer side of the planetary gears and is coaxially fixed to the end plate of the soil crushing roller via bolts. A central gear meshes with the inner side of the planetary gears, and a rotating shaft is fixedly connected to the side of the central gear away from the main drive disc via a flat key. The rotating shaft runs through the soil crushing roller along its axis, and multiple eccentric counterweights are fixedly connected to the section of the rotating shaft inside the soil crushing roller by bolts. The eccentric counterweights are evenly distributed around the circumference of the rotating shaft, with an eccentricity of 15mm to 25mm. The end of the eccentric counterweight away from the central gear is connected to a magnetic coupling via a flange, and the other end of the magnetic coupling away from the eccentric counterweight is connected to a fixed shaft via a flange. The fixed shaft is coaxially fixedly connected to the end plate of the soil crushing roller on the side away from the gear drive mechanism.

[0006] Furthermore, the leveling device is mounted on the rear end of the towing vehicle via a connecting mechanism, which includes an arched beam, a triangular bracket, an angle adjustment bracket, an arc-shaped support arm, and a triangular connector. The arched beam is made of high-strength alloy steel, and its two ends are fixedly connected to the front frame of the towing vehicle via pins. A triangular bracket is rotatably connected to the midpoint of the bottom of the arched beam via a pivot. An angle adjustment bracket is rotatably connected to both sides of the lower end of the triangular bracket via pivots. An arc-shaped support arm is welded to one side of the angle adjustment bracket, and the arc curvature of the arc-shaped support arm matches the arc curvature of the arc-shaped backplate. A triangular connector is rotatably connected to the free end of the arc-shaped support arm via a pivot, and the triangular connector is movably connected to the arc-shaped backplate via a sliding mechanism.

[0007] Furthermore, a set of hydraulic lifting rods are symmetrically and movably connected to both sides of the bow beam. The cylinder end of the hydraulic lifting rod is connected to the ear plates on both sides of the bow beam via hinges, and the piston rod end is fixedly connected to the upper ear plates on both sides of the triangular bracket via pins. The maximum stroke of the hydraulic lifting rod is 300mm to 500mm, and the working pressure is 10MPa to 15MPa. It is used to adjust the working height of the leveling device and ensure the stability of the leveling device during the lifting process.

[0008] Furthermore, an internal gear ring is fixedly connected to the inner wall of the angle adjustment bracket near the triangular bracket. The internal gear ring has 60-80 teeth and a module of 2-3. A first hydraulic motor is fixedly connected to the middle crossbeam of the triangular bracket by bolts. An angle adjustment gear is fixedly connected to the output shaft of the first hydraulic motor by a key. The angle adjustment gear has 15-20 teeth and a module consistent with the internal gear ring. The angle adjustment gear meshes with the internal gear ring with high precision, realizing stepless angle adjustment of the angle adjustment bracket around the rotation axis of the triangular bracket. The angle adjustment range is 0°-45°.

[0009] Furthermore, a buffer pressure rod is rotatably connected between the outer middle part of the arc-shaped support arm and the upper part of the triangular connector. The cylinder end of the buffer pressure rod is connected to the outer ear plate of the arc-shaped support arm via a hinge, and the piston rod end is fixedly connected to the upper ear plate of the triangular connector via a hinge. The working pressure of the buffer pressure rod is 5MPa-8MPa, and it is equipped with a two-way buffer valve to adjust the working angle of the leveling device and absorb the impact force of the soil on the arc-shaped back plate during operation. The buffer stroke is 50mm-100mm.

[0010] Furthermore, a linear slide rail is bolted to the end face of the elastic connecting beam facing the triangular connecting member. The length of the linear slide rail is the same as the length of the elastic connecting beam. It is hardened and has a surface hardness ≥ HRC55. A linear slider is bolted to the end face of the triangular connecting member facing the elastic connecting beam. The linear slider and the linear slide rail are clearance-fitted, with a sliding resistance ≤ 5N. Dustproof sealing rings are provided at both ends of the linear slider. A position adjustment hydraulic rod is also provided on the lower fixed seat of the triangular connecting member. The position adjustment hydraulic rod is parallel to the linear slide rail. Its cylinder end is fixed on the lower fixed seat of the triangular connecting member, and its piston rod end is fixed to the middle reinforcing rib of the arc-shaped back plate through a flange. The maximum stroke of the position adjustment hydraulic rod is 200mm~300mm, which is used to adjust the axial position of the arc-shaped back plate along the linear slide rail.

[0011] Furthermore, the shock-absorbing connecting block between the elastic connecting beam and the rotating support is made of rubber and polyester fiber composite material, wherein the rubber content is 60% to 70% and the polyester fiber content is 30% to 40%. The shock-absorbing connecting block is trapezoidal, with bosses at both ends that are adapted to the mounting holes of the elastic connecting beam and the rotating support. The bosses and the mounting holes are interference fit. The vibration attenuation rate of the shock-absorbing connecting block is ≥80%, which is used to block the vibration generated during the operation of the soil crushing roller from being transmitted to the arc-shaped back plate.

[0012] Furthermore, two spiral scrapers are welded axially on the outer wall of the soil crushing drum. The spiral scrapers are made of high-strength manganese steel and are surface-hardened to a hardness ≥ HRC50. The spiral scraper pitch is 150mm~200mm, the scraper height is 80mm~120mm, and the scraper thickness is 10mm~15mm. The spiral directions of adjacent spiral scrapers are consistent, extending spirally from one end to the other along the axial direction of the soil crushing drum, and are used to directionally transport the crushed soil to one side of the soil crushing drum.

[0013] Furthermore, the soil crushing roller, the arc-shaped shovel, and the crushing liner are eccentrically set. The eccentricity between the axis of the soil crushing roller and the arc-shaped center axis of the arc-shaped shovel and the crushing liner is 20mm to 30mm. The inlet end gap between the soil crushing roller and the arc-shaped shovel is 50mm to 60mm, and the outlet end gap between the soil crushing roller and the crushing liner is 10mm to 15mm. The gap gradually decreases along the soil conveying direction to achieve progressive crushing of soil clods.

[0014] Furthermore, the magnetic coupling is an adjustable torque electromagnetic coupling with a torque adjustment range of 50 N•m-200 N•m.

[0015] The technical effects and advantages of this invention are as follows: In this invention, an arc-shaped shovel is used for initial leveling, and the soil crushing roller and crushing liner work together to crush the soil, achieving integrated leveling and crushing operations, thus improving work efficiency. When the soil crushing roller encounters hard soil clods or stones and gets stuck, the magnetic coupling slips. At this time, the gear drive mechanism changes the transmission ratio, which increases the rotational speed of the eccentric counterweight, thereby increasing the vibration frequency and amplitude, effectively enhancing the crushing capacity, and avoiding the problem of jamming or reduced efficiency of traditional equipment due to insufficient crushing capacity. At the same time, the spiral scraper set on the outer wall of the soil crushing roller can directionally transport the crushed soil to one side of the soil crushing roller, preventing soil accumulation in the working area and ensuring the continuity of operation and leveling effect. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the bow-shaped beam structure of the present invention; Figure 3 This is a schematic diagram of the angle adjustment bracket structure of the present invention; Figure 4 This is a schematic diagram of the eccentric structure of the soil-crushing roller of the present invention; Figure 5This is a schematic cross-sectional view of the soil-crushing roller structure of the present invention; Figure 6 This is a schematic diagram of the gear drive mechanism of the present invention; Figure 7 This is a schematic diagram of the main drive disk structure of the present invention.

[0017] Legend: 1. Traction vehicle; 2. Bow-shaped beam; 3. Triangular bracket; 4. Hydraulic lifting rod; 5. Angle adjustment bracket; 6. Internal gear ring; 7. First hydraulic motor; 8. Angle adjustment gear; 9. Arc-shaped support arm; 10. Triangular connector; 11. Buffer hydraulic rod; 12. Arc-shaped back plate; 13. Elastic connecting beam; 14. Linear slide rail; 15. Linear slider; 16. Position adjustment hydraulic rod; 17. Shock-absorbing connecting block; 18. Rotating bracket; 19. Soil-crushing roller; 1901. Spiral scraper; 20. Arc-shaped shovel; 21. Crushing liner; 22. Second hydraulic motor; 23. Gear drive mechanism; 2301. Main drive disc; 2302. Planetary gear; 2303. Large gear ring; 2304. Central gear; 24. Rotating shaft; 25. Eccentric counterweight; 26. Magnetic coupling; 27. Fixed shaft. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Example 1 Reference Figure 1 - Figure 7 As shown, the present invention provides a vibratory soil breaking and leveling device for field road repair, the core features of which include an arc-shaped back plate 12, an arc-shaped shovel 20, a breaking liner 21, an elastic connecting beam 13, a shock-absorbing connecting block 17, a rotating bracket 18, a soil breaking roller 19, a second hydraulic motor 22, a gear drive mechanism 23, a rotating shaft 24, an eccentric counterweight 25, a magnetic coupling 26, and a fixed shaft 27.

[0020] Specifically, the arc-shaped back plate 12 is one of the main structures of the device. Its arc-shaped inner sidewall is firmly connected to the arc-shaped shovel 20 and the crushing liner 21 by M12-M16 bolts. The arc-shaped shovel 20 is located at the front end of the crushing liner 21. The two are seamlessly connected along the arc direction of the arc-shaped back plate 12 to form a smooth working surface for preliminary leveling operations. This setting ensures a smooth transition between shoveling and subsequent crushing.

[0021] Two parallel elastic connecting beams 13 are welded to the outer arc-shaped wall of the arc-shaped back plate 12. The elastic connecting beams 13 are made of 65Mn spring steel with good elasticity and fatigue strength, which can withstand the impact and vibration during operation. The two ends of the elastic connecting beams 13 are fixedly connected to the rotating brackets 18 through the shock-absorbing connecting blocks 17. The shock-absorbing connecting blocks 17 are made of rubber and polyester fiber composite material, with a rubber content of 60% to 70% and a polyester fiber content of 30% to 40%. The shock-absorbing connecting blocks 17 are trapezoidal, and their two ends are provided with bosses that are adapted to the mounting holes of the elastic connecting beams 13 and the rotating brackets 18. The bosses are interference-fitted with the mounting holes, which ensures the firmness of the connection and enhances the shock absorption effect. The vibration attenuation rate of the shock-absorbing connecting blocks 17 is ≥80%. Its function is to effectively block the violent vibration generated by the soil-breaking roller 19 during operation from being transmitted to the arc-shaped back plate 12, thereby protecting the main structure of the device and the stable operation of the traction vehicle 1, and extending the service life of the equipment.

[0022] The rotating bracket 18 is rotatably connected to the soil-crushing roller 19 via a deep groove ball bearing. The deep groove ball bearing has good load-bearing capacity and rotational accuracy, ensuring that the soil-crushing roller 19 runs smoothly. The length of the soil-crushing roller 19 is consistent with the axial length of the arc-shaped back plate 12, ensuring that the coverage area of ​​the operation matches the width of the shovel.

[0023] To drive the soil-crushing roller 19 and its internal vibration mechanism, a second hydraulic motor 22 is bolted to the outer wall of the rotating bracket 18. The output shaft of the second hydraulic motor 22 is keyed to a gear drive mechanism 23. The gear drive mechanism 23 adopts a planetary gear system structure, specifically including a main drive disc 2301, planetary gears 2302, a large gear ring 2303, and a central gear 2304. The main drive disc 2301 is coaxially fixedly connected to the output shaft of the second hydraulic motor 22 via a coupling, serving as the power input end. Three evenly distributed planetary gear mounting shafts are provided on the end face of the main drive disc 2301. Each mounting shaft is rotatably connected to a planetary gear 2302 via a needle roller bearing. These three planetary gears 2302 are symmetrically distributed at 120° around the axis of the main drive disk 2301, ensuring the balance of the transmission. The outer side of the planetary gear 2302 meshes with the large gear ring 2303, which is coaxially fixed to the end plate of the soil crushing roller 19 by bolts. Therefore, the rotation of the large gear ring 2303 directly drives the rotation of the soil crushing roller 19. The inner side of the planetary gear 2302 meshes with the central gear 2304. The side of the central gear 2304 away from the main drive disk 2301 is fixedly connected to the rotating shaft 24 via a flat key.

[0024] The rotating shaft 24 passes through the soil crushing roller 19 along its axis. On the section of the rotating shaft 24 located inside the soil crushing roller 19, multiple eccentric counterweights 25 are fixedly connected by bolts. These eccentric counterweights 25 are evenly distributed around the circumference of the rotating shaft 24, with an eccentricity of 15mm to 25mm. The design of the eccentric counterweights 25 causes the rotating shaft 24 to generate a strong centrifugal force when rotating at high speed, thereby generating vibration. The end of the eccentric counterweight 25 away from the central gear 2304 is connected to a magnetic coupling 26 through a flange. The other end of the magnetic coupling 26 away from the eccentric counterweight 25 is connected to a fixed shaft 27 through a flange. The fixed shaft 27 is coaxially fixedly connected to the end plate of the soil crushing roller 19 on the side away from the gear drive mechanism 23.

[0025] In a preferred embodiment, the soil-crushing roller 19 is eccentrically arranged with the arc-shaped shovel 20 and the crushing liner 21. Specifically, the eccentricity between the axis of the soil-crushing roller 19 and the arc-shaped central axis of the arc-shaped shovel 20 and the crushing liner 21 is 20mm to 30mm. This eccentricity design helps the roller to apply a more effective crushing force to the soil during rotation. At the same time, the inlet end gap between the soil-crushing roller 19 and the arc-shaped shovel 20 is 50mm to 60mm, and the outlet end gap between the soil-crushing roller 19 and the crushing liner 21 is 10mm to 15mm. This design, where the gap gradually decreases along the soil conveying direction, allows the soil clods to be crushed progressively, that is, large pieces of soil are first coarsely crushed and then gradually finely crushed, improving crushing efficiency and the degree of fine crushing.

[0026] When the device is used for road repair in the field, the first towing vehicle 1 pulls the arc-shaped shovel 20 to initially level the soil. The second hydraulic motor 22 drives the gear drive mechanism 23, which in turn drives the soil crushing roller 19 to rotate. After the soil is scraped up by the arc-shaped shovel 20, it enters the gap between the soil crushing roller 19 and the crushing liner 21. Through the crushing action of the roller and the squeezing action of the liner, the soil clods are crushed. At the same time, the eccentric counterweight 25 located inside the soil crushing roller 19 rotates at high speed under the drive of the rotating shaft 24, generating vibration, which further enhances the soil crushing effect.

[0027] The key technology of this invention lies in its adaptive crushing capability. During use, if the crushing roller 19 encounters hard soil or rocks, causing its rotation to be hindered or jammed, and its rotation speed drops below the preset value, the magnetic coupling 26 will detect this torque change. When the input torque exceeds its set slippage torque threshold, the magnetic coupling 26 will experience overload slippage. This slippage causes relative rotation between the rotating shaft 24 and the crushing roller 19. Since the large gear ring 2303 is rigidly connected to the crushing roller 19, its rotation speed will decrease or even stop as the crushing roller 19 decelerates. However, the main drive disc 2301 is still driven by the second hydraulic motor 22 at a constant speed. In this case, the planetary gear 2302 will rotate around the large gear ring 2303 under the drive of the main drive disc 2301, and drive the central gear. 2304 rotates at a higher speed. The high-speed rotation of the central gear 2304 drives the connected rotating shaft 24, thereby increasing the rotational speed of the eccentric counterweight 25, which in turn increases the vibration frequency and amplitude, effectively enhancing the crushing capacity of the soil crushing drum 19. At the same time, due to the reduced rotational speed of the large gear ring 2303, the rotational speed of the soil crushing drum 19 will also decrease accordingly, forming a flexible crushing process until the hard soil or rocks are crushed. Once the torque on the soil crushing drum 19 returns to normal, the magnetic coupling 26 stops slipping, the rotational speed of the eccentric counterweight 25 decreases accordingly, and the rotational speed of the soil crushing drum 19 increases. Finally, the eccentric counterweight 25 and the soil crushing drum 19 resume synchronous rotation, and the system returns to normal operation. This adaptive vibration enhancement mechanism greatly improves the soil crushing efficiency and adaptability of the device under complex working conditions.

[0028] Example 2 Based on Embodiment 1, this embodiment further optimizes the connection mechanism and adjustment mechanism of the entire device, referring to... Figure 1 - Figure 3 As shown, the leveling device is mounted on the rear end of the traction vehicle 1 via a connecting mechanism, which includes an arched beam 2, a triangular bracket 3, an angle adjustment bracket 5, an arc-shaped support arm 9, and a triangular connector 10. The bow beam 2 is made of high-strength alloy steel, and its two ends are fixedly connected to the front frame of the traction vehicle 1 by pins, providing strong structural support.

[0029] A triangular bracket 3 is rotatably connected to the bottom midpoint of the bow beam 2 via a rotating shaft. Angle adjustment brackets 5 are rotatably connected to both sides of the lower end of the triangular bracket 3 via rotating shafts. An arc-shaped support arm 9 is welded to one side of the angle adjustment bracket 5. The arc curvature of the arc-shaped support arm 9 matches the arc curvature of the arc-shaped back plate 12, ensuring the consistency of the device structure and the stability of operation. A triangular connector 10 is rotatably connected to the free end of the arc-shaped support arm 9 via a rotating shaft. The triangular connector 10 is movably connected to the arc-shaped back plate 12 via a sliding mechanism.

[0030] To facilitate adjustment of the working height of the leveling device, a set of hydraulic lifting rods 4 are symmetrically and movably connected to both sides of the bow beam 2. The cylinder end of the hydraulic lifting rod 4 is connected to the ear plates on both sides of the bow beam 2 via hinges, and the piston rod end is fixedly connected to the upper ear plates on both sides of the triangular bracket 3 via pins. The maximum stroke of the hydraulic lifting rod 4 is 300mm to 500mm, and the working pressure is 10MPa to 15MPa. Through the hydraulic lifting rod 4, the operator can accurately adjust the overall working height of the leveling device and ensure the stability of the leveling device during the lifting process, adapting to the operational requirements of different fields.

[0031] To achieve stepless and precise adjustment of the working angle of the leveling device, an internal gear ring 6 is fixedly connected to the inner wall of the angle adjustment bracket 5 near the triangular bracket 3. The internal gear ring 6 has 60-80 teeth and a module of 2-3, providing sufficient meshing accuracy. A first hydraulic motor 7 is fixedly connected to the middle crossbeam of the triangular bracket 3 by bolts. The output shaft of the first hydraulic motor 7 is fixedly connected to an angle adjustment gear 8 by a key. The angle adjustment gear 8 has 15-20 teeth and a module consistent with the internal gear ring 6, achieving high-precision meshing. By driving the angle adjustment gear 8 to mesh with the internal gear ring 6 through the first hydraulic motor 7, stepless angle adjustment of the angle adjustment bracket 5 around the rotation axis of the triangular bracket 3 can be achieved. Its angle adjustment range is 0°-45°, which makes the adjustment of the working angle more flexible and precise, and can adapt to more complex field terrain and operational needs.

[0032] In a preferred embodiment, a buffer pressure rod 11 is rotatably connected between the outer side of the middle part of the arc-shaped support arm 9 and the upper part of the triangular connector 10. The cylinder end of the buffer pressure rod 11 is connected to the outer ear plate of the arc-shaped support arm 9 by a hinge, and the piston rod end is fixedly connected to the upper ear plate of the triangular connector 10 by a hinge. The working pressure of the buffer pressure rod 11 is 5MPa-8MPa, and it is equipped with a two-way buffer valve. The buffer pressure rod 11 is not only used to fine adjust the working angle of the leveling device, but more importantly, it can absorb the impact force of the soil on the arc-shaped back plate 12 during operation. Its buffer stroke is 50mm-100mm, which effectively reduces the structural load of the equipment and improves the stability and durability of the equipment.

[0033] Example 3 Based on Embodiment 1 and Embodiment 2, this embodiment further optimizes the function of the soil crushing roller and the position adjustment mechanism of the arc-shaped back plate.

[0034] Reference Figure 2As shown, a spiral scraper 1901 is welded axially onto the outer wall of the soil crushing roller 19. The spiral scraper 1901 is made of high-strength manganese steel, with a surface quenching treatment and a hardness ≥ HRC50, exhibiting excellent wear resistance and impact resistance. The spiral scraper 1901 has a pitch of 150mm to 200mm, a scraper height of 80mm to 120mm, and a scraper thickness of 10mm to 15mm. Adjacent spiral scrapers 1901 have the same spiral direction, extending spirally from one end to the other along the axial direction of the soil crushing roller 19. The main function of these spiral scrapers 1901 is to directionally convey the crushed soil to one side of the soil crushing roller 19. This conveying mechanism avoids the accumulation of crushed soil in the working area, ensures the continuity of the leveling operation, reduces the need for manual cleaning, and significantly improves work efficiency.

[0035] In the connecting mechanism, a linear slide rail 14 is bolted to the end face of the elastic connecting beam 13 facing the triangular connector 10. The length of the linear slide rail 14 is the same as the length of the elastic connecting beam 13. It is hardened and has a surface hardness ≥ HRC55 to ensure its high wear resistance. A linear slider 15 is bolted to the end face of the triangular connector 10 facing the elastic connecting beam 13. The linear slider 15 and the linear slide rail 14 are clearance fit, with a sliding resistance ≤ 5N, ensuring smooth sliding. Dustproof sealing rings are provided at both ends of the linear slider 15 to effectively prevent dust and debris from entering and extend its service life.

[0036] To precisely adjust the axial position of the arc-shaped back plate 12 along the linear slide rail 14, a position adjustment hydraulic rod 16 is also provided on the lower fixed seat of the triangular connector 10. The position adjustment hydraulic rod 16 is arranged parallel to the linear slide rail 14, and its cylinder end is fixed on the lower fixed seat of the triangular connector 10. The piston rod end is fixedly connected to the middle reinforcing rib of the arc-shaped back plate 12 through a flange. The maximum stroke of the position adjustment hydraulic rod 16 is 200mm to 300mm, which is used to adjust the axial position of the arc-shaped back plate 12. This adjustment capability allows the operator to accurately position the arc-shaped back plate laterally according to actual operation needs, such as avoiding specific obstacles or adjusting the soil conveying position.

[0037] Furthermore, the magnetic coupling 26 in this embodiment is an adjustable torque electromagnetic coupling with a torque adjustment range of 50 N•m-200 N•m. This adjustable torque range allows the operator to preset or adjust the slippage torque threshold of the magnetic coupling 26 in real time according to the hardness of the soil to be crushed. This makes the device more flexible in adapting to the soil crushing needs under different working conditions, avoiding excessive vibration when encountering softer soil, and setting a higher slippage threshold when encountering extremely hard soil, ensuring that the vibration of the eccentric counterweight 25 can be started in time and provide sufficient crushing force, thereby achieving more refined and efficient soil crushing and leveling operations.

[0038] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A vibratory soil-breaking and leveling device for field road repair, characterized in that, The back plate includes an arc-shaped back plate (12). The inner arc-shaped sidewall of the arc-shaped back plate (12) is fixedly connected to an arc-shaped shovel (20) and a crushing liner (21) by bolts. The arc-shaped shovel (20) is located at the front end of the crushing liner (21). The two are seamlessly connected along the arc-shaped direction of the arc-shaped back plate (12). Two parallel elastic connecting beams (13) are welded to the outer arc-shaped sidewall of the arc-shaped back plate (12). The two ends of the elastic connecting beams (13) are fixedly connected to rotating brackets (18) by shock-absorbing connecting blocks (17). The rotating brackets (18) are rotatably connected to a soil-crushing roller (19). The length of the soil-crushing roller (19) is consistent with the axial length of the arc-shaped back plate (12). The outer wall of the rotating bracket (18) is fixedly connected to a second hydraulic motor (22) by bolts. The output shaft of the second hydraulic motor (22) is connected to a gear drive mechanism (23) via a key. The gear drive mechanism (23) includes a main drive disc (2301), planetary gears (2302), a large gear ring (2303), and a central gear (2304). The main drive disc (2301) is coaxially fixedly connected to the output shaft of the second hydraulic motor (22) via a coupling. Three evenly distributed planetary gears are provided on the end face of the main drive disc (2301). Each mounting shaft is rotatably connected to a planetary gear (2302), and the three planetary gears (2302) are symmetrically distributed at 120° around the axis of the main drive disk (2301). A large gear ring (2303) meshes with the outer side of the planetary gear (2302), and the large gear ring (2303) is coaxially fixedly connected to the end plate of the soil crushing roller (19) by bolts. A central gear (2304) meshes with the inner side of the planetary gear (2302), and a rotating shaft (24) is fixedly connected to the side of the central gear (2304) away from the main drive disk (2301) by a flat key. The rotating shaft (24) passes through the soil crushing roller (19) along the axis of the soil crushing roller (19), and multiple eccentric counterweights (25) are fixedly connected to the section of the rotating shaft (24) located inside the soil crushing roller (19) by bolts. The eccentric counterweights (25) are evenly distributed around the circumference of the rotating shaft (24). The end of the eccentric counterweight (25) away from the central gear (2304) is connected to a magnetic coupling (26) through a flange. The other end of the magnetic coupling (26) away from the eccentric counterweight (25) is connected to a fixed shaft (27) through a flange. The fixed shaft (27) is coaxially fixedly connected to the end plate of the soil crushing roller (19) away from the gear drive mechanism (23).

2. The vibratory soil-breaking and leveling device for field road repair according to claim 1, characterized in that: The leveling device is mounted on the rear end of the traction vehicle (1) via a connecting mechanism. The connecting mechanism includes an arched beam (2), a triangular bracket (3), an angle adjustment bracket (5), an arc-shaped support arm (9), and a triangular connector (10). The arched beam (2) is made of high-strength alloy steel, and its two ends are fixedly connected to the front frame of the traction vehicle (1) via pins. The midpoint of the bottom of the arched beam (2) is rotatably connected to the triangular bracket (3) via a pivot. The lower ends of the triangular bracket (3) are rotatably connected to the angle adjustment bracket (5) via pivots on both sides. An arc-shaped support arm (9) is welded to one side of the angle adjustment bracket (5). The free end of the arc-shaped support arm (9) is rotatably connected to the triangular connector (10) via a pivot. The triangular connector (10) is movably connected to the arc-shaped back plate (12) via a sliding mechanism.

3. The vibratory soil-breaking and leveling device for field road repair according to claim 2, characterized in that: A set of hydraulic lifting rods (4) are symmetrically and movably connected to both sides of the bow beam (2). The cylinder end of the hydraulic lifting rod (4) is connected to the ear plates on both sides of the bow beam (2) by a hinge, and the piston rod end is fixedly connected to the ear plates on both sides of the upper end of the triangular bracket (3) by a pin.

4. The vibratory soil-breaking and leveling device for field road repair according to claim 2, characterized in that: An internal gear ring (6) is fixedly connected to the inner wall of the angle adjustment bracket (5) near the triangular bracket (3). A first hydraulic motor (7) is fixedly connected to the middle crossbeam of the triangular bracket (3) by bolts. An angle adjustment gear (8) is fixedly connected to the output shaft of the first hydraulic motor (7) by a key.

5. A vibratory soil-breaking and leveling device for field road repair according to claim 2, characterized in that: A buffer pressure rod (11) is rotatably connected between the outer side of the middle part of the arc-shaped support arm (9) and the upper part of the triangular connector (10). The cylinder end of the buffer pressure rod (11) is connected to the outer ear plate of the arc-shaped support arm (9) by a hinge, and the piston rod end is fixedly connected to the upper ear plate of the triangular connector (10) by a hinge.

6. A vibratory soil-breaking and leveling device for field road repair according to claim 2, characterized in that: The elastic connecting beam (13) is bolted to a linear slide rail (14) on the end face facing the triangular connector (10). The triangular connector (10) is bolted to a linear slider (15) on the end face facing the elastic connecting beam (13). The linear slider (15) is clearance-fitted with the linear slide rail (14). The lower fixed seat of the triangular connector (10) is also provided with a position adjustment hydraulic rod (16). The position adjustment hydraulic rod (16) is parallel to the linear slide rail (14). Its cylinder end is fixed on the lower fixed seat of the triangular connector (10). The piston rod end is fixedly connected to the middle reinforcing rib of the arc-shaped back plate (12) through a flange.

7. A vibratory soil-breaking and leveling device for field road repair according to claim 1, characterized in that: The shock-absorbing connecting block (17) between the elastic connecting beam (13) and the rotating bracket (18) is made of rubber and polyester fiber composite material.

8. A vibratory soil-breaking and leveling device for field road repair according to claim 1, characterized in that: Two spiral scrapers (1901) are welded axially on the outer wall of the soil crushing roller (19), and the spiral directions of adjacent spiral scrapers (1901) are consistent.

9. A vibratory soil-breaking and leveling device for field road repair according to claim 1, characterized in that: The soil-breaking roller (19), the arc-shaped shovel (20), and the crushing liner (21) are eccentrically arranged.

10. A vibratory soil-breaking and leveling device for field road repair according to claim 1, characterized in that: The magnetic coupling (26) is an adjustable torque electromagnetic coupling with a torque adjustment range of 50 N•m-200 N•m.

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