A vibrating soil breaking land leveler for field road finishing

Abstract

The present application relates to the field of engineering machinery, and discloses a kind of field road finishing vibration soil breaking land leveling device.The device includes arc back plate, inner side is equipped with arc-shaped shovel and broken lining, outside elastic connecting beam is connected with rotating support and soil breaking roller;Rotating support is equipped with second hydraulic motor, and the roller is driven by planetary gear drive mechanism, the rotating shaft in the roller is equipped with eccentric weight, and the device is connected with traction carrier through the connecting mechanism containing bow-shaped beam and triangular support, is equipped with hydraulic lifting, angle adjusting and buffering component, the outer wall of the roller has spiral scraper, and can be integrated paving and breaking, when encountering large block of soil and stone, the magnetic coupling slips and vibrates, prevent soil and stone accumulation, improve work efficiency and adaptability to complex terrain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, in particular to a vibration soil breaking and land leveling device for field road maintenance. BACKGROUND

[0002] Traditional field road maintenance operations usually use land leveling shovels, bulldozers and other equipment to carry out gravel and soil paving operations. The main function of these devices is to scrape and push the completed road surface to achieve a smooth surface effect.

[0003] However, in the prior art, these land leveling devices often have difficulty effectively breaking hard obstacles such as hard soil and stones when encountering field roads containing such obstacles, resulting in poor road leveling effects. In addition, the overloading and wear of the equipment increase, and the operation efficiency is low. Some devices have also attempted to introduce a breaking function, but the breaking effect is often limited, and during the breaking process, the broken soil and stones are easily accumulated in front of the device, affecting subsequent leveling operations, requiring multiple back-and-forth movements or manual cleaning, further reducing operation efficiency. In addition, the rotational speed and breaking capacity of the breaking mechanism of the existing devices are often fixed when encountering hard obstacles during operation, making it difficult to adaptively adjust according to actual conditions, resulting in inconsistent and unstable breaking effects. In particular, in complex working conditions, the breaking capacity may be insufficient, causing the device to be stuck or the efficiency to be reduced. Therefore, the existing field road maintenance leveling device still has many technical defects and improvement spaces in terms of processing hard soil and solving the coordination efficiency of soil breaking and land leveling. SUMMARY

[0004] The technical problem to be solved by the present application is that the existing field road leveling device has poor breaking effect when processing hard soil or stones, and the coordination efficiency of breaking and scraping is low. Therefore, we propose a vibration soil breaking and land leveling device for field road maintenance.

[0005] To achieve the above purpose, the following technical solution is adopted: a vibration soil breaking and land leveling device for field road maintenance, comprising an arc-shaped back plate, an arc-shaped inner side wall of the arc-shaped back plate being fixedly connected with an arc-shaped shovel and a breaking lining plate through M12-M16 bolts, and the arc-shaped shovel being located at the front end of the breaking lining plate, the two being seamlessly connected along the arc direction of the arc-shaped back plate; the arc-shaped outer side wall of the arc-shaped back plate is welded with two parallel elastic connecting beams, the elastic connecting beams are made of 65Mn spring steel, and the two ends are fixedly connected with rotating supports through damping connecting blocks, the rotating supports are rotatably connected with a soil breaking drum through deep groove ball bearings, the length of the soil breaking drum is consistent with the axial length of the arc-shaped back plate;

[0006] The outer side wall of the rotating support is fixedly connected with a second hydraulic motor through a bolt, the output shaft of the second hydraulic motor is drivingly connected with a gear driving mechanism through a key connection, the gear driving mechanism comprises a main driving disc, a planetary gear, a large gear ring and a central gear, the main driving disc is coaxially fixedly connected with the output shaft of the second hydraulic motor through a shaft coupling, three planetary gear mounting shafts are evenly arranged on the end face of the main driving disc, one planetary gear is rotatably connected with each mounting shaft through a needle bearing, and the three planetary gears are symmetrically distributed at an angle of 120° around the axis of the main driving disc; the outer side of the planetary gear is engaged with the large gear ring, the large gear ring is coaxially fixedly connected with the end plate of the soil crushing roller through a bolt, the inner side of the planetary gear is engaged with the central gear, and the central gear is fixedly connected with a rotating shaft through a flat key at the side away from the main driving disc.

[0007] The rotating shaft penetrates the soil crushing roller along the axis line of the soil crushing roller, and a plurality of eccentric counterweights are fixedly connected with the section of the rotating shaft located inside the soil crushing roller through bolts, the eccentric counterweights are evenly distributed along the circumference of the rotating shaft, the eccentricity is 15mm-25mm, one end of the eccentric counterweight away from the central gear is connected with a magnetic coupling through a flange, the other end of the magnetic coupling away from the eccentric counterweight is connected with a fixed shaft through a flange, and the fixed shaft is coaxially fixedly connected with the end plate of the soil crushing roller away from the gear driving mechanism.

[0008] Further, the land leveling device is loaded at the rear end of the traction carrier through a connecting mechanism, the connecting mechanism comprises an arcuate beam, a triangular support, an angle adjusting support, an arc-shaped supporting arm and a triangular connecting piece; the arcuate beam is made of high-strength alloy steel, and both ends thereof are fixedly connected with the front end frame of the traction carrier through pin shafts; the midpoint of the bottom of the arcuate beam is rotatably connected with the triangular support through a rotating shaft, the lower ends of the two sides of the triangular support are rotatably connected with the angle adjusting support through rotating shafts, the arc-shaped supporting arm is welded on one side of the angle adjusting support, and the arc-shaped curvature of the arc-shaped supporting arm is adapted to the arc-shaped curvature of the arc-shaped back plate; the free end of the arc-shaped supporting arm is rotatably connected with the triangular connecting piece through a rotating shaft, and the triangular connecting piece is movably connected with the arc-shaped back plate through a sliding mechanism.

[0009] Further, a group of hydraulic lifting rods are symmetrically movably connected on the two sides of the arcuate beam, the cylinder end of the hydraulic lifting rod is connected with the two side ears of the arcuate beam through a hinge, and the piston rod end is fixedly connected with the upper two side ears of the triangular support through a pin shaft; the maximum stroke of the hydraulic lifting rod is 300mm-500mm, the working pressure is 10MPa-15MPa, and the hydraulic lifting rod is used for adjusting the working height of the land leveling device and ensuring the stability of the land leveling device during the lifting process.

[0010] Further, the inner side wall of the angle adjusting support near the side of the triangular support is fixedly connected with an inner tooth ring, the number of teeth of the inner tooth ring is 60-80, and the modulus is 2-3; the middle beam of the triangular support is fixedly connected with a first hydraulic motor through a bolt, the output shaft of the first hydraulic motor is fixedly connected with an angle adjusting gear through a key, the number of teeth of the angle adjusting gear is 15-20, the modulus is consistent with that of the inner tooth ring, the angle adjusting gear is high-precision meshed with the inner tooth ring, the angle adjusting support is steplessly adjusted around the rotation shaft of the triangular support, and the angle adjusting range is 0°-45°.

[0011] Further, the middle part of the arc-shaped support arm is rotationally connected with the upper part of the triangular connecting piece through a buffer hydraulic rod, the cylinder end of the buffer hydraulic rod is connected to the outer side ear plate of the arc-shaped support arm through a hinge, and the piston rod end is fixedly connected with the upper ear plate of the triangular connecting piece through a hinge; the working pressure of the buffer hydraulic rod is 5 MPa-8 MPa, a bidirectional buffer valve is arranged, the bidirectional buffer valve is used for adjusting the working angle of the land leveling device and absorbing the impact force of the arc-shaped back plate on the soil during working, and the buffer stroke is 50 mm-100 mm.

[0012] Further, the end face of the elastic connecting beam towards the side of the triangular connecting piece is fixedly connected with a linear slide rail through a bolt, the length of the linear slide rail is consistent with the length of the elastic connecting beam, the linear slide rail is quenched, and the surface hardness is greater than or equal to HRC55; the end face of the triangular connecting piece towards the side of the elastic connecting beam is fixedly connected with a linear slide block through a bolt, the linear slide block is gap-fitted with the linear slide rail, the sliding resistance is less than or equal to 5 N, and the two ends of the linear slide block are provided with dustproof sealing rings; the lower fixing seat of the triangular connecting piece is further provided with a position adjusting hydraulic rod, the position adjusting hydraulic rod is arranged in parallel with the linear slide rail, the cylinder end of the position adjusting hydraulic rod is fixed to the lower fixing seat of the triangular connecting piece, the piston rod end is fixedly connected with the middle reinforcing rib of the arc-shaped back plate through a flange, and the maximum stroke of the position adjusting hydraulic rod is 200 mm-300 mm, and the position adjusting hydraulic rod is used for adjusting the axial position of the arc-shaped back plate along the linear slide rail.

[0013] Further, the damping connecting block arranged between the elastic connecting beam and the rotating support is made of rubber and polyester fiber composite material, the content of the rubber is 60%-70%, and the content of the polyester fiber is 30%-40%; the damping connecting block is trapezoidal, the two ends are provided with bosses matched with mounting holes of the elastic connecting beam and the rotating support, the bosses are in interference fit with the mounting holes, and the vibration attenuation rate of the damping connecting block is greater than or equal to 80%, so that the vibration generated during the operation of the soil crushing roller is blocked from being transmitted to the arc-shaped back plate.

[0014] Further, two spiral scrapers are welded on the outer wall of the soil crushing roller along the axial direction, the spiral scrapers are made of high-strength manganese steel, the surface is subjected to quenching treatment, and the hardness is greater than or equal to HRC50; the pitch of the spiral scraper is 150mm-200mm, the scraper height is 80mm-120mm, the scraper thickness is 10mm-15mm, the spiral directions of adjacent spiral scrapers are consistent, and the spiral scrapers extend spirally along the axial direction of the soil crushing roller from one end to the other end, so as to directionally convey the crushed soil to one side of the soil crushing roller.

[0015] Further, the soil crushing roller, the arc-shaped shovel and the crushing lining plate are arranged eccentrically, the eccentric distance between the center of the soil crushing roller and the arc-shaped center axis of the arc-shaped shovel and the crushing lining plate is 20mm-30mm; the inlet end gap between the soil crushing roller and the arc-shaped shovel is 50mm-60mm, the outlet end gap between the soil crushing roller and the crushing lining plate is 10mm-15mm, and the gap gradually decreases along the soil conveying direction, so that the progressive crushing of the soil clumps is realized.

[0016] Further, the magnetic coupling is an electromagnetic coupling with adjustable torque, and the torque adjustment range is 50N.m-200N.m.

[0017] The technical effects and advantages of the present application are as follows:

[0018] In the present application, the soil is initially scraped by the arc-shaped shovel, and the soil is crushed by the soil crushing roller cooperating with the crushing lining plate, so that the integrated operation of scraping and crushing is realized, and the operation efficiency is improved. When the soil crushing roller encounters hard soil clumps or stone clumps and is stuck, the magnetic coupling slips, at this time, the gear driving mechanism changes the transmission ratio, so that the rotating speed of the eccentric weight block is increased, thereby increasing the vibration frequency and the vibration amplitude, effectively enhancing the crushing capacity, avoiding the problems of blockage or reduced efficiency of the traditional equipment due to insufficient crushing capacity, and the spiral scrapers arranged on the outer wall of the soil crushing roller can directionally convey the crushed soil to one side of the soil crushing roller, avoiding the accumulation of soil in the operation area, and ensuring the continuity and leveling effect of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts:

[0020] Figure 1 It is an appearance structure schematic view of the present application;

[0021] Figure 2 It is an arc-shaped beam structure schematic view of the present application;

[0022] Figure 3 It is an angle adjusting support structure schematic view of the present application;

[0023] Figure 4 This is a schematic diagram of the eccentric structure of the soil-crushing roller of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the soil-crushing roller structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the gear drive mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the main drive disk structure of the present invention.

[0027] 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

[0028] 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.

[0029] Example 1

[0030] 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.

[0031] Specifically, the arc-shaped back plate 12 is one of the main body structures of the device, and the arc-shaped inner side wall of the arc-shaped back plate 12 is fixedly connected with the arc-shaped shovel 20 and the crushing lining plate 21 through M12-M16 bolts, the arc-shaped shovel 20 is located at the front end of the crushing lining plate 21, and the two are seamlessly connected along the arc direction of the arc-shaped back plate 12 to form a smooth working surface for preliminary scraping work, and such an arrangement ensures smooth transition of the earth shoveling and subsequent crushing steps.

[0032] The arc-shaped outer side wall of the arc-shaped back plate 12 is welded with two parallel elastic connecting beams 13 made of 65Mn spring steel with good elasticity and fatigue strength, which can withstand impact and vibration during operation, and the two ends of the elastic connecting beam 13 are fixedly connected with a rotating support 18 through a damping connecting block 17 made of rubber and polyester fiber composite material, wherein the rubber content is 60%-70% and the polyester fiber content is 30%-40%, the damping connecting block 17 is trapezoidal, and the two ends are provided with bosses matched with the mounting holes of the elastic connecting beam 13 and the rotating support 18, the bosses are interference fit with the mounting holes, which ensures the firmness of the connection and enhances the damping effect, the vibration attenuation rate of the damping connecting block 17 is ≥80%, which effectively blocks the transmission of the intense vibration generated by the soil crushing roller 19 during operation to the arc-shaped back plate 12, thereby protecting the main body structure of the device and the stable operation of the traction carrier 1, and prolonging the service life of the equipment.

[0033] The rotating support 18 is rotatably connected with the soil crushing roller 19 through a deep groove ball bearing, which has good load capacity and rotation accuracy to ensure the stable operation of the soil crushing roller 19, and the length of the soil crushing roller 19 is consistent with the axial length of the arc-shaped back plate 12 to ensure that the coverage of the operation matches the width of the earth shoveling.

[0034] In order to drive the soil crushing roller 19 and the vibration mechanism inside it, the outer side wall of the rotating support 18 is fixedly connected with a second hydraulic motor 22 through bolts, the output shaft of the second hydraulic motor 22 is drivingly connected with a gear driving mechanism 23 through a key connection, the gear driving mechanism 23 adopts a planetary gear train structure, specifically including a main driving disc 2301, planetary gears 2302, a large gear ring 2303 and a central gear 2304, the main driving disc 2301 is coaxially fixedly connected with the output shaft of the second hydraulic motor 22 through a shaft coupling, as a power input end, the end face of the main driving disc 2301 is provided with three evenly distributed planetary gear mounting shafts, each mounting shaft is rotatably connected with a planetary gear 2302 through a needle bearing, the three planetary gears 2302 are symmetrically distributed at an angle of 120° around the axis of the main driving disc 2301, to ensure the balance of transmission, the outer side of the planetary gear 2302 is in mesh with the large gear ring 2303, the large gear ring 2303 is coaxially fixedly connected with the end plate of the soil crushing roller 19 through bolts, thus the rotation of the large gear ring 2303 directly drives the soil crushing roller 19 to rotate, the inner side of the planetary gear 2302 is in mesh with the central gear 2304, the central gear 2304 is fixedly connected with a rotating shaft 24 through a flat key on the side away from the main driving disc 2301.

[0035] The rotating shaft 24 penetrates the soil crushing roller 19 along the axis line of the soil crushing roller 19, a plurality of eccentric counterweights 25 are fixedly connected with the rotating shaft 24 on the section of the rotating shaft 24 located inside the soil crushing roller 19, the eccentric counterweights 25 are evenly distributed along the circumference of the rotating shaft 24, the eccentricity thereof is 15mm-25mm, the design of the eccentric counterweights 25 enables the rotating shaft 24 to generate strong centrifugal force when rotating at high speed, thereby forming vibration, the end of the eccentric counterweight 25 away from the central gear 2304 is connected with a magnetic coupling 26 through a flange, the other end of the magnetic coupling 26 away from the eccentric counterweight 25 is connected with a fixed shaft 27 through a flange, the fixed shaft 27 is coaxially fixedly connected with the end plate of the soil crushing roller 19 on the side away from the gear driving mechanism 23.

[0036] In a preferred embodiment, the soil crushing roller 19, the arc-shaped shovel 20 and the crushing liner plate 21 are eccentrically arranged, 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 plate 21 is 20mm-30mm, such eccentricity design helps the roller to exert more effective crushing force on the soil during rotation, meanwhile, the inlet end gap between the soil crushing roller 19 and the arc-shaped shovel 20 is 50mm-60mm, and the outlet end gap between the soil crushing roller 19 and the crushing liner plate 21 is 10mm-15mm, such gap design gradually decreasing along the soil conveying direction enables the soil clumps to be progressively crushed, i.e. the large soil clumps are first coarsely crushed, and then gradually finely crushed, thereby improving the crushing efficiency and the degree of fineness.

[0037] When the device is used for road repairing in the field, firstly, the towing vehicle 1 pulls the arc-shaped shovel 20 to preliminarily scrape the soil, the second hydraulic motor 22 drives the gear driving mechanism 23, and then drives the soil crushing roller 19 to rotate, the soil scraped by the arc-shaped shovel 20 enters the gap between the soil crushing roller 19 and the crushing lining plate 21, and is crushed by the crushing effect of the roller and the lining plate, meanwhile, the eccentric weight 25 in the soil crushing roller 19 rotates at high speed under the driving of the rotating shaft 24, and vibration is generated, which further enhances the soil crushing effect.

[0038] The key technology of the present application is the self-adaptive crushing capacity, in the use process, once the soil crushing roller 19 encounters hard soil or stone and is blocked or stuck, and the rotating speed is lower than the preset value, the magnetic coupling 26 detects the torque change, when the input torque exceeds the set slip torque threshold, the magnetic coupling 26 will overload and slip, the relative rotation is generated between the rotating shaft 24 and the soil crushing roller 19, since the large gear ring 2303 is rigidly connected with the soil crushing roller 19, the rotating speed of the large gear ring 2303 will decrease with the decrease of the rotating speed of the soil crushing roller 19, and even stop, however, the main driving disc 2301 is still driven by the second hydraulic motor 22 at a constant rotating speed, in this case, the planetary gear 2302 rotates around the large gear ring 2303 under the driving of the main driving disc 2301, and drives the central gear 2304 to rotate at a higher speed, the high-speed rotation of the central gear 2304 drives the rotating shaft 24 connected with the central gear 2304, so that the rotating speed of the eccentric weight 25 is increased, and the vibration frequency and vibration amplitude are increased, the crushing capacity of the soil crushing roller 19 is effectively enhanced, meanwhile, since the rotating speed of the large gear ring 2303 is decreased, the rotating speed of the soil crushing roller 19 is also decreased, a flexible crushing process is formed, until the hard soil or stone is crushed, the torque on the soil crushing roller 19 returns to normal, the magnetic coupling 26 stops slipping, the rotating speed of the eccentric weight 25 is decreased, the rotating speed of the soil crushing roller 19 is increased, finally, the eccentric weight 25 and the soil crushing roller 19 restore synchronous rotation, and the system returns to the normal working state, the self-adaptive vibration enhancement mechanism greatly improves the soil crushing efficiency and adaptability of the device under complex working conditions.

[0039] Embodiment two

[0040] On the basis of embodiment one, the connecting mechanism and adjusting mechanism of the whole device are further optimized in the present embodiment, referring to Fig. Figure 1 - Figure 3 The land leveling device is loaded on the rear end of the towing vehicle 1 through the connecting mechanism, the connecting mechanism comprises an arc-shaped beam 2, a triangular support 3, an angle adjusting support 5, an arc-shaped support arm 9 and a triangular connecting piece 10.

[0041] The arcuate beam 2 is made of high-strength alloy steel, and its two ends are fixedly connected to the front end frame of the traction carrier 1 through a pin shaft to provide strong structural support.

[0042] The midpoint of the bottom of the arcuate beam 2 is rotatably connected to a triangular support 3 through a rotating shaft, and the lower end of the triangular support 3 is rotatably connected to an angle adjusting support 5 through a rotating shaft on both sides. One side of the angle adjusting support 5 is welded with an arc-shaped support arm 9, the arc-shaped curvature of which is matched with the arc-shaped curvature of an arc-shaped back plate 12, ensuring the consistency of the device structure and the stability of the operation. The free end of the arc-shaped support arm 9 is rotatably connected to a triangular connecting piece 10, which is movably connected to the arc-shaped back plate 12 through a sliding mechanism.

[0043] In order to conveniently adjust the working height of the land leveling device, a group of hydraulic lifting rods 4 are symmetrically movably connected to the two sides of the arcuate beam 2. The cylinder end of the hydraulic lifting rod 4 is connected to the two side ears of the arcuate beam 2 through a hinge, and the piston rod end is fixedly connected to the upper end of the two side ears of the triangular support 3 through a pin shaft. The maximum stroke of the hydraulic lifting rod 4 is 300mm-500mm, and the working pressure is 10MPa-15MPa. Through the hydraulic lifting rod 4, the operator can accurately adjust the working height of the land leveling device as a whole and ensure the stability of the land leveling device during lifting, thereby adapting to the operation requirements of different fields.

[0044] In order to realize stepless and accurate adjustment of the operation angle of the land leveling device, an inner tooth ring 6 is fixedly connected to the inner side wall of the side of the angle adjusting support 5 close to the triangular support 3. The number of teeth of the inner tooth ring 6 is 60-80 teeth, and the modulus is 2-3, which provides sufficient tooth engagement accuracy. A first hydraulic motor 7 is fixedly connected to the middle beam of the triangular support 3 through a bolt. The output shaft of the first hydraulic motor 7 is fixedly connected to an angle adjusting gear 8 through a key connection. The number of teeth of the angle adjusting gear 8 is 15-20 teeth, and the modulus is consistent with that of the inner tooth ring 6, realizing high-precision meshing. The meshing of the angle adjusting gear 8 and the inner tooth ring 6 driven by the first hydraulic motor 7 can realize stepless angle adjustment of the angle adjusting support 5 around the rotating shaft of the triangular support 3, and the angle adjustment range is 0°-45°, which makes the adjustment of the operation angle more flexible and accurate, and can adapt to more complex field terrain and operation requirements.

[0045] In a preferred embodiment, the middle outer side of the arc-shaped support arm 9 is rotationally connected with the upper part of the triangular connecting piece 10, and a buffer hydraulic rod 11 is arranged between the two. The cylinder end of the buffer hydraulic rod 11 is connected to the outer side ear plate of the arc-shaped support arm 9 through a hinge, and the piston rod end is fixedly connected to the upper ear plate of the triangular connecting piece 10 through a hinge. The working pressure of the buffer hydraulic rod 11 is 5-8 MPa, and a bidirectional buffer valve is arranged. The buffer hydraulic rod 11 is not only used for fine adjustment of the working angle of the land leveling device, but more importantly, it can absorb the impact force of the soil on the arc-shaped back plate 12 during operation. The buffer stroke is 50-100 mm, which effectively reduces the structural load of the equipment and improves the stability and durability of the equipment.

[0046] Example Three

[0047] On the basis of example one and example two, the function of the soil crushing roller and the position adjustment mechanism of the arc-shaped back plate are further optimized in this embodiment.

[0048] Referring to Figure 2 As shown in the figure, the outer wall of the soil crushing roller 19 is welded with helical scrapers 1901 along the axial direction. The helical scrapers 1901 are made of high-strength manganese steel and are subjected to quenching treatment on the surface, with a hardness of ≥HRC50, excellent wear resistance and impact resistance. The pitch of the helical scrapers 1901 is 150-200 mm, the height of the scrapers is 80-120 mm, and the thickness of the scrapers is 10-15 mm. The helical directions of adjacent helical scrapers 1901 are consistent, extending helically along the axial direction of the soil crushing roller 19 from one end to the other end. The main function of these helical scrapers 1901 is to direct the crushed soil to one side of the soil crushing roller 19 after crushing. 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 the operation efficiency.

[0049] In the connecting mechanism, the end face of the elastic connecting beam 13 towards the triangular connecting piece 10 is fixedly connected with a linear slide rail 14 through bolts. The length of the linear slide rail 14 is consistent with the length of the elastic connecting beam 13, and the linear slide rail 14 is subjected to quenching treatment, with a surface hardness of ≥HRC55, ensuring high wear resistance. The end face of the triangular connecting piece 10 towards the elastic connecting beam 13 is fixedly connected with a linear slide block 15 through bolts. The linear slide block 15 and the linear slide rail 14 are in clearance fit, with a sliding resistance of ≤5 N, ensuring smooth sliding. The two ends of the linear slide block 15 are provided with dustproof sealing rings, effectively preventing dust and debris from entering and prolonging the service life.

[0050] In order to finely adjust the axial position of the arc-shaped back plate 12 along the linear slide rail 14, a position adjusting hydraulic rod 16 is further arranged on the lower fixing seat of the triangular connecting piece 10, which is arranged in parallel with the linear slide rail 14, with the cylinder end fixed on the lower fixing seat of the triangular connecting piece 10, and the piston rod end fixedly connected with the middle reinforcing rib of the arc-shaped back plate 12 through a flange, the maximum stroke of the position adjusting hydraulic rod 16 being 200mm-300mm, for adjusting the axial position of the arc-shaped back plate 12, and such an adjusting capacity enables the operator to accurately position the arc-shaped back plate according to the actual operation requirements, such as avoiding specific obstacles or adjusting the soil conveying position.

[0051] In addition, the magnetic coupling 26 in the embodiment is an electromagnetic coupling with adjustable torque, with the torque adjusting range being 50N•m-200N•m, and such an adjustable torque range allows the operator to pre-set or real-time adjust the slip torque threshold of the magnetic coupling 26 according to the hardness of the soil to be crushed, which enables the device to more flexibly adapt to the soil crushing requirements under different working conditions, avoids excessive vibration when encountering soft soil, and sets a higher slip threshold when encountering extremely hard soil, so as to ensure that the vibration of the eccentric weight block 25 can be started in time and provide sufficient crushing force, thereby realizing more refined and efficient soil crushing and land leveling operation.

[0052] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and such modifications and changes shall all belong to the protection scope of the present application.

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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