Self-propelled stubble-pressing slurry-lifting soil preparation machine

Abstract

The utility model discloses a self-propelled stubble-pressing slurry-lifting land preparation machine which comprises a machine frame, a front axle and a rear axle, the rear axle is fixedly installed below the rear end of the machine frame, the front axle is rotatably installed below the front end of the machine frame, the front axle and the rear axle are respectively provided with a tilling wheel, the front axle is connected with a steering mechanism, an engine is installed above the rear end of the machine frame, and the engine is connected with the rear axle. A cab is installed on the machine frame, the engine is connected with a clutch, the clutch is connected with a rear output box, the output box is connected with a gearbox, the gearbox is connected with a reverse gear box through a first transmission shaft, the reverse gear box is connected with a transfer case, and the transfer case is connected with a rear axle through an auxiliary gearbox and a rear drive transmission shaft. The transfer case is connected with the front axle through a universal coupling, an angle turning device and a power shaft, and a soil leveler is installed at the rear end of the machine frame in a suspended mode. The self-propelled stubble-pressing slurry-lifting soil preparation machine can press previous stubble straws into slurry, and is provided with the soil leveler, so that the soil leveling effect is good, and the agricultural requirements are met.

Description

Technical Field

[0001] This utility model relates to the technical field of agricultural applications, specifically a self-propelled stubble pressing and slurry leveling machine. Background Technology

[0002] Before planting crops and cash crops, the land needs to be prepared through tillage. Traditional farmland preparation involves using livestock such as oxen and horses to plow and harrow, which is inefficient, labor-intensive, requires dedicated personnel to raise the oxen and horses, and is costly. With the development of science and technology and the increasing economic strength of my country, agriculture has also developed rapidly. Various agricultural machinery products are now used in countless households. Their development has saved labor, greatly improved labor efficiency, and promoted agricultural development.

[0003] Before planting grasses, emergent plants, etc., in paddy fields, especially if the previous crop was water chestnut or rice, it is necessary to till and remove stubble before planting the next crop. Traditional tillage and stubble removal mostly use small hand-held tillers or rotary tillers driven by tractors. Small hand-held tillers have a small tillage width, low tillage efficiency, and are labor-intensive to operate manually; while rotary tillers driven by tractors are prone to getting tangled in straw and getting stuck in the soil, affecting normal tillage.

[0004] To improve farming efficiency and reduce labor intensity, the applicant developed a rear-engine, front-wheel-drive tiller, application number 202210281861.6, filed in March 2022. Abstract: A rear-engine, front-wheel-drive tiller includes a front axle, a frame, an engine, and a rear axle. The rear axle is mounted on the lower rear side of the frame. The engine is mounted on the rear side of the frame. A hinged connecting seat is fixedly connected to the front axle, and the front axle is hinged to the lower front side of the frame via the hinged connecting seat. A steering hydraulic cylinder and a steering gear for controlling steering are mounted on the frame. Tiller wheels are mounted on the drive shafts of both the front and rear axles. A transfer gearbox and a rear-drive gearbox are mounted on the frame. The transfer gearbox is connected to the engine via a drive shaft. The front side of the transfer gearbox is connected to the power input end of the front axle via a transmission connector. The rear side of the transfer gearbox is connected to the rear-drive gearbox via a rear output drive shaft. The rear-drive gearbox is connected to the power input end of the rear axle via a rear drive drive shaft. The rear-drive gearbox is used to change the rotational speed of the rear tiller wheels to adjust the tillage depth. This tiller has high tillage efficiency and easily adjustable tillage depth.

[0005] Application research revealed that the aforementioned tillers have poor mud-leveling performance, making them unsuitable for agronomic requirements. Furthermore, their tiller wheels easily damage road surfaces when traveling on roads, necessitating the use of rubber tires during road travel. Changing to tiller wheels during tilling is labor-intensive, and after tilling, the tiller wheels become sticky with mud, weeds, and other debris, making replacement difficult. Therefore, it is necessary to improve the design of the tiller. Summary of the Invention

[0006] The purpose of this utility model is to address the problems existing in the prior art by providing a self-propelled stubble pressing and slurry leveling machine. This machine can press the previous crop straw into the slurry and is equipped with a leveling device, which provides good leveling effect and meets agronomic requirements.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A self-propelled stubble compaction and tillage machine includes a frame, a front axle, and a rear axle. The rear axle is fixedly installed below the rear end of the frame, and the front axle is rotatably installed below the front end of the frame. Both the front and rear axles are equipped with tillage wheels. The front axle is connected to a steering mechanism. An engine is installed above the rear end of the frame, and a cab is installed on the frame. The engine is connected to a clutch, which is connected to a rear output box. The output box is connected to a gearbox, which is connected to a reverse gearbox via a drive shaft. The reverse gearbox is connected to a transfer case, which is connected to the rear axle via an auxiliary gearbox and a rear drive shaft to transmit power to the rear axle. The transfer case is connected to the front axle via a universal coupling, a corner joint, and a power shaft to transmit power to the front axle. The rear output box, gearbox, transfer case, and reverse gearbox are all fixedly connected to the frame. A leveler is suspended at the rear end of the frame. Suspended leveling tools can automatically adjust to the depth of the soil. If the scraper is fixed, when working with a self-propelled screeding and leveling machine at different soil depths, the scraping will produce undulating waves, which is difficult to control.

[0009] Further preferred embodiment: The cornering device is vertically fixedly mounted on the front end of the frame via a bearing mounting seat. A rotating sleeve is rotatably mounted within the bearing mounting seat via a bearing. The bottom end of the rotating sleeve is fixedly connected to the front axle housing via a connecting sleeve seat. The connecting sleeve seat serves to fix the rotating sleeve to the front axle housing. Rotating the connecting sleeve seat causes the front axle to rotate as a whole around the rotating sleeve. The cornering device's power output shaft extends from the top of the rotating sleeve and is connected to the power shaft via a perforated shaft connecting sleeve. The power shaft passes through the connecting sleeve seat and connects to the front axle's power input shaft or power input gear. The steering mechanism includes a steering wheel, a hydraulic steering gear, and a drive cylinder. The steering wheel is mounted on the frame via the hydraulic steering gear. A drive cylinder is hinged to each side of the frame via a hinge mounting seat. The piston shaft of the drive cylinder is hinged to a push hinge lug that is laterally fixed at the upper end of the connecting sleeve seat. The hydraulic steering gear and the drive cylinder are connected to a hydraulic system.

[0010] Further preferred embodiment: the push hinge ear extends and connects to the upper front end of the connecting cylinder seat in a symmetrical fixed connection, and the height of the push hinge ear is flush with the height of the hinge mounting seat; the rotating bushing adopts a double bearing fixing form, and the upper and lower ends of the rotating bushing are respectively rotatably connected to the bearing mounting seat through a bearing.

[0011] Further optimization: The hydraulic system includes an oil pump, a hydraulic oil tank, pump oil pipes, return oil pipes, supply oil pipe one, and supply oil pipe two. The inlet and outlet of the oil pump are connected to the hydraulic oil tank and the hydraulic steering gear respectively via pump oil pipes. The return port of the hydraulic steering gear is connected to the hydraulic oil tank via a return oil pipe. A radiator is installed on the return oil pipe. One control inlet / outlet port of the hydraulic steering gear is connected to the inlet port of one drive cylinder and the outlet port of another drive cylinder via supply oil pipe one. The other control inlet / outlet port of the hydraulic steering gear is connected to the outlet port of one drive cylinder and the inlet port of another drive cylinder via supply oil pipe two. By turning the steering wheel, the hydraulic steering gear controls the corresponding oil circuit, causing one drive cylinder to extend and the other drive cylinder to retract, thereby pushing the hinge lug to drive the connecting cylinder seat and driving the entire front axle to rotate, thus achieving steering.

[0012] Further preferred configuration: The leveler is a leveling roller type leveler or a rotary tiller type leveler. The leveling roller type leveler includes a leveling roller, a suspension chain, and suspension arms. Two suspension arms are respectively hinged to hinged vertical lugs fixed on both sides of the frame. A fixed rod is fixedly connected between the rear ends of the two suspension arms. A suspension lifting cylinder is hinged between the fixed rod and the frame. The cylinder seat of the suspension lifting cylinder is hinged to the frame, and the piston shaft of the suspension lifting cylinder is hinged to the fixed rod. The leveling roller is horizontally suspended below the rear ends of the suspension arms via the suspension chain. The rotary tiller type leveler includes a rotary tiller and hinged arms. Two fixed arms are vertically fixedly connected above the front end of the rotary tiller frame. The lower ends of the two fixed arms are respectively connected to... One articulated arm is hinged to the lower end of the articulated vertical lugs fixed on both sides of the frame. The front end of the articulated arm is hinged to the lower end of the articulated vertical lugs, and the rear end of the articulated arm is hinged to the lower end of the fixed arm. The upper side of the rear end of the articulated arm is hinged to the articulated vertical lugs via a suspension lifting cylinder. The cylinder seat of the suspension lifting cylinder is hinged to the articulated vertical lugs, and the piston shaft of the suspension lifting cylinder is hinged to the upper side of the rear end of the articulated arm. The upper ends of the two fixed arms are each hinged to the upper end of the articulated vertical lugs via a telescopic adjusting arm. The telescopic adjusting arm adopts the suspension center tie rod structure of tractor suspension accessories, which can be purchased and installed commercially. Anti-sinking shoe plates are installed on the lower sides of the rotary tiller. The power box of the rotary tiller is connected to the rear output box via the rotary tiller drive shaft.

[0013] Further preferred embodiment: The leveling roller includes a large sleeve tube and a small sleeve tube, wherein the small sleeve tube is movably sleeved inside both ends of the large sleeve tube, and a telescopic drive cylinder is installed on the large sleeve tube for driving the small sleeve tube to slide and extend inside the large sleeve tube.

[0014] The tillage wheel includes two structures. The first structure of the tillage wheel: the seed-injected, non-removable paddy field tillage wheel includes two coaxially arranged wheel rims. Multiple V-shaped plates are evenly distributed and connected between the two wheel rims along the axial direction. The top of the V-shaped plates is arranged outward. The V-shaped plates can be directly cut from angle steel to a suitable length. A hub connecting plate for connecting to the drive axle is coaxially arranged inside one of the wheel rims. The hub connecting plate is connected to the wheel rim by multiple spokes. Alternatively, a hub connecting plate for connecting to the drive axle and a connecting ring for connecting to multiple V-shaped plates can be coaxially arranged between the two wheel rims. The outer ring of the connecting ring is connected to multiple V-shaped plates. The hub connecting plate is connected to the connecting ring by multiple spokes. The hub connecting plate is provided with multiple hub connecting bolt holes for mounting bolts to achieve bolt connection with the drive axle. Rubber strips are spaced and cast around the outer side of the V-shaped plates.

[0015] Further optimization: The glue-injected, non-removable paddy field tillage wheels are installed in pairs on the drive axle, meaning one or more tillage wheels are installed at each end of the drive axle, with the hub connecting plate of the inner tillage wheel facing outwards. When multiple tillage wheels are installed at each end of the drive axle, the wheel rims are provided with multiple connecting holes arranged along the axial direction of the tillage wheels. Two adjacent tillage wheels at the same end are tightly connected to each other by connecting bolts installed in the connecting holes. This structure allows for an increase in the number of tillage wheels installed according to the required tillage width, and enables left- or right-hand installation of the tillage wheels.

[0016] The second structure of the tillage wheel: The seed-injected, non-removable paddy field tillage wheel includes a No. 1 tillage wheel and a No. 2 tillage wheel. Both the No. 1 and No. 2 tillage wheels include two coaxially arranged wheel rims. Multiple V-shaped plates are evenly distributed and connected axially between the corresponding two wheel rims of the No. 1 and No. 2 tillage wheels. The top of the V-shaped plates are arranged outwards. A hub connecting plate for connecting with the drive axle is coaxially arranged in one of the wheel rims of the No. 2 tillage wheel. The hub connecting plate is connected to the wheel rim by multiple spokes. The hub connecting plate is provided with multiple hub connecting bolt holes for mounting bolts to achieve bolt connection with the drive axle. Rubber strips are wrapped and poured on the outer side of the V-shaped plates at intervals.

[0017] Further optimization: The No. 1 and No. 2 tillage wheels are installed in pairs on the drive axle, that is, one No. 1 tillage wheel and one or more No. 2 tillage wheels are installed at each end of the drive axle, with the No. 1 tillage wheel located on the outermost side and the hub connecting plate of the innermost tillage wheel facing outwards. The wheel rim has multiple connecting holes arranged along the axial direction of the tillage wheels. Two adjacent tillage wheels at the same end are tightly connected to the wheel rim using connecting bolts installed in the connecting holes. Since the No. 1 tillage wheel is located at the outermost end, to save materials, a hub connecting plate and spokes are not required; the No. 1 and No. 2 tillage wheels are simply connected by bolts installed through the connecting holes on the wheel rim.

[0018] Further optimization: The rubber strip is divided into two sections. One section consists of a long, curved, narrow rubber strip, and the other section is composed of a short, curved, narrow rubber strip and a wide rubber strip joined together. The wide rubber strip is located at the end closest to the wheel hub connecting plate. The top surfaces of the curved, narrow rubber strip and the wide rubber strip are at the same height. The wide rubber strip provides greater stability when driving on the road, while the curved, narrow rubber strip reduces resistance during paddy field cultivation.

[0019] Further optimization: The V-shaped plate has a through-hole for glue injection connection, and the inner side of the V-shaped plate has an anti-detachment limiting ear that passes through the glue injection connection hole and is integrally formed with the rubber strip. The glue injection connection hole allows the anti-detachment limiting ear and the rubber strip to be located on the inner and outer sides of the V-shaped plate respectively, and connected as a whole, which can improve the connection performance between the rubber strip and the V-shaped plate, reduce the occurrence of loosening, and increase service life.

[0020] Further optimization: The multiple spokes are evenly distributed with the wheel rim's axis as the center.

[0021] Further preferred embodiment: the plurality of connecting holes are evenly distributed with the wheel rim's axis as the center.

[0022] Further optimization: The connection between two tillage wheels at the same end is a V-shaped plate staggered with each other. The staggered arrangement of the V-shaped plates of adjacent tillage wheels can reduce tillage subsidence.

[0023] This self-propelled stubble compaction and slurry preparation machine has the following advantages:

[0024] 1. The self-propelled stubble pressing and slurry leveling machine can press the previous crop straw into the slurry and is equipped with a soil leveler, which has a good soil leveling effect and meets agronomic requirements. The suspended soil leveler can automatically adapt to the soil depth. If the scraper is fixed, when the soil depth is different, the scraping will be undulating and difficult to control when working with the self-propelled stubble pressing and slurry leveling machine.

[0025] 2. The front axle housing is rotatably connected to the bearing mounting seat at the front of the frame via a connecting sleeve and a rotating bushing. The rotating bushing is rotatably mounted in the bearing mounting seat via a bearing. A drive cylinder is installed at each end of the frame to drive the connecting sleeve and rotate the entire front axle. The connecting sleeve serves to fix the rotating bushing to the front axle housing. Rotating the connecting sleeve causes the front axle to rotate around the rotating bushing, raising the rotational mounting position of the steering mechanism, making it less susceptible to mud and water immersion and extending the service life of the steering mechanism. The corner gear is vertically fixed on the bearing mounting seat. The corner gear's power output shaft is connected to a power shaft via a perforated shaft connecting sleeve. The power shaft passes through the connecting sleeve and connects to the front axle's power input shaft or power input gear. The corner gear's power input shaft is connected to the gearbox housing via a universal coupling. The power from the gearbox housing is transmitted to the power shaft via the universal coupling and the corner gear, thus transmitting power to the front axle to drive the tiller wheels. The power transmission performance is reliable and does not affect the overall rotation of the front axle.

[0026] 3. The tillage wheel uses two coaxially arranged rims with multiple V-shaped plates evenly distributed along the axial direction. The top of the V-shaped plates faces outward. The V-shaped plates can be directly cut from angle steel to a suitable length. One of the rims has a hub connecting plate coaxially arranged for connection with the axle. The hub connecting plate is connected to the rim by multiple spokes. The hub connecting plate is provided with multiple hub connecting bolt holes for bolting the connection with the axle. It is easy to install, has good structural integrity, and is not easily deformed. Rubber strips are wrapped and poured on the outside of the V-shaped plates at intervals. When the tillage wheel is installed on the drive axle, it can be used as both a driving wheel and a tillage wheel. It does not affect paddy field cultivation. When driving on the road, the rubber injection point contacts the road surface, which can reduce the damage to the road surface. There is no need to disassemble and replace the rubber wheel and the iron wheel. Due to the support of the V-shaped plates, it is not easy to sink deeply during cultivation.

[0027] 4. The rubber strip is divided into two sections. One section consists of a long, curved, narrow rubber strip, while the other section is composed of a short, curved, narrow rubber strip joined with a wide rubber strip. The wide rubber strip is located at the end closest to the wheel hub connecting plate. The top surfaces of the curved, narrow rubber strip and the wide rubber strip are at the same height. The wide rubber strip provides a more stable ride on the road, while the curved, narrow rubber strip reduces drag during paddy field cultivation.

[0028] 5. A glue injection connection hole is provided through the V-shaped plate, and an anti-detachment limiting ear is provided on the inner side of the V-shaped plate, which passes through the glue injection connection hole and is integrally formed with the rubber strip. The glue injection connection hole allows the anti-detachment limiting ear and the rubber strip to be located on the inner and outer sides of the V-shaped plate respectively, and connected as a whole. This improves the connection performance between the rubber strip and the V-shaped plate, reduces the occurrence of loosening, and extends service life. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the main structure of a self-propelled stubble pressing and slurry leveling machine;

[0030] Figure 2 yes Figure 1 Schematic diagram of the internal connection structure of the middle connecting cylinder seat;

[0031] Figure 3 yes Figure 1 A top-down view;

[0032] Figure 4 This is a schematic diagram of the main three-dimensional structure of a self-propelled stubble pressing and slurry leveling machine;

[0033] Figure 5 This is a schematic diagram of the hydraulic oil circuit.

[0034] Figure 6 This is a schematic diagram of the structure of a self-propelled stubble compaction and slurry leveling machine with a leveling roller type soil leveler installed.

[0035] Figure 7 yes Figure 6 A top-down view;

[0036] Figure 8 This is a schematic diagram of a self-propelled stubble compaction and slurry leveling machine equipped with a rotary tiller-type leveler.

[0037] Figure 9 yes Figure 8 A top-down view;

[0038] Figure 10 This is a schematic diagram of the tillage wheel structure in Example 1;

[0039] Figure 11 yes Figure 10 A top-down view;

[0040] Figure 12 This is a schematic diagram of the tillage wheel installation in Example 1;

[0041] Figure 13 This is a three-dimensional structural diagram of the tillage wheel in Example 2;

[0042] Figure 14 This is a schematic diagram of the tillage wheel installation in Example 2;

[0043] Figure 15 This is a three-dimensional structural diagram of a V-shaped plate with partial glue injection.

[0044] Figure 16 This is a schematic diagram of the planar structure of the V-shaped plate with partial glue injection;

[0045] Figure 17 yes Figure 16 A diagram showing the view from the right.

[0046] The names corresponding to the serial numbers in the figure are:

[0047] 1. Steering wheel, 2. Hydraulic steering gear, 3. Frame, 4. Articulated mount, 5. Drive cylinder, 6. Universal coupling, 7. Angle joint, 8. Bearing mount, 9. Push articulated lug, 10. Connecting cylinder seat, 11. Front axle, 12. Tiller wheel, 13. Transfer case, 14. Auxiliary gearbox, 15. Rear drive shaft, 16. Rear axle, 17. Engine, 18. Clutch, 19. Rear output box, 20. Gearbox, 21. Drive shaft one, 22. Reverse gearbox, 23. Leveling roller, 24. Telescopic drive cylinder, 25. Suspension chain, 26. Suspension arm, 27. Suspension lifting cylinder, 28. Articulated vertical lug, 29. Cab, 30. Main connecting pipe, 31. Small connecting pipe, 32. 33. Anti-sinking boot plate; 34. Rotary tiller; 35. Articulated arm; 36. Rotary tiller drive shaft; 37. Fixed arm; 38. Telescopic adjusting arm; 39. Flower shaft connecting sleeve; 40. Bearing; 41. Rotating bushing; 42. Power shaft; 43. Oil pump; 44. Hydraulic oil tank; 45. Radiator; 46. Pump oil pipe; 47. Return oil pipe; 48. Oil supply pipe one; 49. Oil supply pipe two; 50. Hub connecting plate; 51. Hub connecting bolt hole; 52. Spoke; 53. V-shaped plate; 54. Connecting hole; 55. Wheel rim; 56. Arc-shaped narrow rubber strip; 57. Wide rubber strip; 58. Drive axle; 59. No. 1 tillage wheel; 60. No. 2 tillage wheel; 61. Glue injection connecting hole; 62. Anti-detachment limiting ear. Detailed Implementation

[0048] To provide a more detailed description of this utility model, the following description, in conjunction with the embodiments and accompanying drawings, will further illustrate this utility model. Example 1

[0049] A self-propelled stubble compaction and tillage machine includes a frame 3, a front axle 11, and a rear axle 16. The rear axle 16 is fixedly installed below the rear end of the frame 3, and the front axle 11 is rotatably installed below the front end of the frame 3. Both the front axle 11 and the rear axle 16 are equipped with tillage wheels 12. The front axle 11 is connected to a steering mechanism. An engine 17 is installed above the rear end of the frame 3, and a driver's cab 29 is installed on the frame 3. The engine 17 is connected to a clutch 18, the clutch 18 is connected to a rear output box 19, and the output box 19 is connected to a gearbox. 20. The gearbox 20 is connected to the reverse gearbox 22 via the drive shaft 21. The reverse gearbox 22 is connected to the transfer case 13. The transfer case 13 is connected to the rear axle 16 via the auxiliary gearbox 14 and the rear drive shaft 15, transmitting power to the rear axle 16. The transfer case 13 is connected to the front axle 11 via the universal coupling 6, the angle coupling 7 and the drive shaft 41, transmitting power to the front axle 11. The rear output box 19, gearbox 20, transfer case 13 and reverse gearbox 22 are all fixedly connected to the frame 3. A leveler is suspended at the rear end of the frame 3.

[0050] The cornering device 7 is vertically fixedly installed at the front end of the frame 3 via a bearing mounting seat 8. A rotating bushing 40 is rotatably installed in the bearing mounting seat 8 via a bearing 39. The bottom end of the rotating bushing 40 is fixedly connected to the housing of the front axle 11 via a connecting sleeve seat 10. The function of the connecting sleeve seat 10 is to fix the rotating bushing 40 to the housing of the front axle 11. When the connecting sleeve seat 10 is rotated, the front axle 11 can be driven to rotate as a whole around the rotating bushing 40 as the rotation center. The power output shaft of the corner gear 7 extends from the top of the rotating shaft sleeve 40. The power output shaft of the corner gear 7 is connected to the power shaft 41 through the flower shaft connecting sleeve 38. The power shaft 41 passes through the connecting sleeve 10 and is connected to the power input shaft or power input gear of the front axle 11. The steering mechanism includes a steering wheel 1, a hydraulic steering gear 2 and a drive cylinder 5. The steering wheel 1 is mounted on the frame 3 through the hydraulic steering gear 2. A drive cylinder 5 is hinged to each side of the frame 3 through a hinge mounting seat 4. The piston shaft of the drive cylinder 5 is hinged to the push hinge ear 9 which is laterally fixed at the upper end of the connecting sleeve 10. The hydraulic steering gear 2 and the drive cylinder 5 are connected to a hydraulic system.

[0051] The push hinge ear 9 extends out and connects to the upper front end of the connecting cylinder seat 10, forming a symmetrical fixed connection. The height of the push hinge ear 9 is flush with the height of the hinge mounting seat 4. The rotating bushing 40 adopts a double bearing fixed form, and the upper and lower ends of the rotating bushing 40 are respectively rotatably connected to the bearing mounting seat 8 through a bearing 39.

[0052] The hydraulic system includes an oil pump 42, a hydraulic oil tank 43, a pump oil pipe 45, a return oil pipe 46, a first supply oil pipe 47, and a second supply oil pipe 48. The inlet and outlet of the oil pump 42 are connected to the hydraulic oil tank 43 and the hydraulic steering gear 2 respectively via the pump oil pipe 45. The return oil port of the hydraulic steering gear 2 is connected to the hydraulic oil tank 43 via the return oil pipe 46. A radiator 44 is installed on the return oil pipe 46. One control inlet / outlet of the hydraulic steering gear 2 is connected to the inlet port of one drive cylinder 5 and the outlet port of another drive cylinder 5 via the first supply oil pipe 47. The other control inlet / outlet of the hydraulic steering gear 2 is connected to the outlet port of one drive cylinder 5 and the inlet port of another drive cylinder 5 via the second supply oil pipe 48. By rotating the steering wheel 1, the hydraulic steering gear 2 controls the corresponding oil circuit, causing one drive cylinder 5 to extend and the other drive cylinder 5 to retract. This, in turn, drives the hinge lug 9 to drive the connecting cylinder seat 10, which in turn drives the front axle 11 to rotate as a whole, thus achieving steering.

[0053] The leveling device is a leveling roller type leveling device, which includes a leveling roller 23, a suspension chain 25, and a suspension arm 26. The two suspension arms 26 are respectively hinged to the hinged vertical lugs 28 fixed on both sides of the frame 3. A fixed rod is fixedly connected between the rear ends of the two suspension arms 26. A suspension lifting cylinder 27 is hinged between the fixed rod and the frame 3. The cylinder seat of the suspension lifting cylinder 27 is hinged to the frame 3. The piston shaft of the suspension lifting cylinder 27 is hinged to the fixed rod. The leveling roller 23 is horizontally suspended below the rear ends of the suspension arm 26 by the suspension chain 25.

[0054] The leveling roller 23 includes a large sleeve tube 30 and a small sleeve tube 31. The small sleeve tube 31 is movably sleeved inside both ends of the large sleeve tube 30. A telescopic drive cylinder 24 is installed on the large sleeve tube 30 to drive the small sleeve tube 31 to slide and extend within the large sleeve tube 30.

[0055] The tillage wheel 12 includes two coaxially arranged rims 54. Multiple V-shaped plates 52 are evenly distributed axially between the two rims 54, with the tops of the V-shaped plates 52 facing outwards. A hub connecting plate 49 for connection to the drive axle 57 is coaxially arranged within one of the rims 54. The hub connecting plate 49 is connected to the rim 54 via multiple spokes 51. The hub connecting plate 49 has multiple hub connecting bolt holes 50 for mounting bolts to achieve bolt connection with the drive axle 57. Rubber strips are spaced and cast around the outer side of the V-shaped plates 52. The rubber strips are divided into two sections: one section consists of a long, arc-shaped narrow rubber strip 55, and the other section consists of a short, arc-shaped narrow rubber strip 55 joined with a wide rubber strip 56. The wide rubber strip 56 is located at the end closest to the hub connecting plate 49. The multiple spokes 51 are evenly distributed around the axis of the rim 54.

[0056] The tillage wheels are installed in pairs on the drive axle 57, that is, one tillage wheel is installed at each end of the drive axle 57. When installed on the drive axle 57, the hub connecting plate 49 of the tillage wheel is installed outward. Example 2

[0057] A self-propelled stubble compaction and tillage machine includes a frame 3, a front axle 11, and a rear axle 16. The rear axle 16 is fixedly installed below the rear end of the frame 3, and the front axle 11 is rotatably installed below the front end of the frame 3. Both the front axle 11 and the rear axle 16 are equipped with tillage wheels 12. The front axle 11 is connected to a steering mechanism. An engine 17 is installed above the rear end of the frame 3, and a driver's cab 29 is installed on the frame 3. The engine 17 is connected to a clutch 18, the clutch 18 is connected to a rear output box 19, and the output box 19 is connected to a gearbox. 20. The gearbox 20 is connected to the reverse gearbox 22 via the drive shaft 21. The reverse gearbox 22 is connected to the transfer case 13. The transfer case 13 is connected to the rear axle 16 via the auxiliary gearbox 14 and the rear drive shaft 15, transmitting power to the rear axle 16. The transfer case 13 is connected to the front axle 11 via the universal coupling 6, the angle coupling 7 and the drive shaft 41, transmitting power to the front axle 11. The rear output box 19, gearbox 20, transfer case 13 and reverse gearbox 22 are all fixedly connected to the frame 3. A leveler is suspended at the rear end of the frame 3.

[0058] The cornering device 7 is vertically fixedly installed at the front end of the frame 3 via a bearing mounting seat 8. A rotating bushing 40 is rotatably installed in the bearing mounting seat 8 via a bearing 39. The bottom end of the rotating bushing 40 is fixedly connected to the housing of the front axle 11 via a connecting sleeve seat 10. The function of the connecting sleeve seat 10 is to fix the rotating bushing 40 to the housing of the front axle 11. When the connecting sleeve seat 10 is rotated, the front axle 11 can be driven to rotate as a whole around the rotating bushing 40 as the rotation center. The power output shaft of the corner gear 7 extends from the top of the rotating shaft sleeve 40. The power output shaft of the corner gear 7 is connected to the power shaft 41 through the flower shaft connecting sleeve 38. The power shaft 41 passes through the connecting sleeve 10 and is connected to the power input shaft or power input gear of the front axle 11. The steering mechanism includes a steering wheel 1, a hydraulic steering gear 2 and a drive cylinder 5. The steering wheel 1 is mounted on the frame 3 through the hydraulic steering gear 2. A drive cylinder 5 is hinged to each side of the frame 3 through a hinge mounting seat 4. The piston shaft of the drive cylinder 5 is hinged to the push hinge ear 9 which is laterally fixed at the upper end of the connecting sleeve 10. The hydraulic steering gear 2 and the drive cylinder 5 are connected to a hydraulic system.

[0059] The push hinge ear 9 extends out and connects to the upper front end of the connecting cylinder seat 10, forming a symmetrical fixed connection. The height of the push hinge ear 9 is flush with the height of the hinge mounting seat 4. The rotating bushing 40 adopts a double bearing fixed form, and the upper and lower ends of the rotating bushing 40 are respectively rotatably connected to the bearing mounting seat 8 through a bearing 39.

[0060] The hydraulic system includes an oil pump 42, a hydraulic oil tank 43, a pump oil pipe 45, a return oil pipe 46, a first supply oil pipe 47, and a second supply oil pipe 48. The inlet and outlet of the oil pump 42 are connected to the hydraulic oil tank 43 and the hydraulic steering gear 2 respectively via the pump oil pipe 45. The return oil port of the hydraulic steering gear 2 is connected to the hydraulic oil tank 43 via the return oil pipe 46. A radiator 44 is installed on the return oil pipe 46. One control inlet / outlet of the hydraulic steering gear 2 is connected to the inlet port of one drive cylinder 5 and the outlet port of another drive cylinder 5 via the first supply oil pipe 47. The other control inlet / outlet of the hydraulic steering gear 2 is connected to the outlet port of one drive cylinder 5 and the inlet port of another drive cylinder 5 via the second supply oil pipe 48. By rotating the steering wheel 1, the hydraulic steering gear 2 controls the corresponding oil circuit, causing one drive cylinder 5 to extend and the other drive cylinder 5 to retract. This, in turn, drives the hinge lug 9 to drive the connecting cylinder seat 10, which in turn drives the front axle 11 to rotate as a whole, thus achieving steering.

[0061] The aforementioned leveler is a rotary tiller-type leveler, comprising a rotary tiller 33 and articulated arms 34. Two fixed arms 36 are vertically fixedly connected to the upper front end of the rotary tiller 33 frame. The lower ends of the two fixed arms 36 are respectively hinged to the lower ends of hinged vertical lugs 28 fixed on both sides of the frame 3 via a hinged arm 34. The front end of the hinged arm 34 is hinged to the lower end of the hinged vertical lug 28, and the rear end of the hinged arm 34 is hinged to the lower end of the fixed arms 36. The upper side of the rear end of the hinged arm 34 is connected to the hinged vertical lug via a suspension lifting cylinder 27. 28 is hinged. The cylinder seat of the suspension lifting cylinder 27 is hinged to the hinge vertical lug 28. The piston shaft of the suspension lifting cylinder 27 is hinged to the upper rear end of the hinge arm 34. The upper ends of the two fixed arms 36 are respectively hinged to the upper ends of the hinge vertical lug 28 through a telescopic adjustment arm 37. The telescopic adjustment arm 37 adopts the suspension intermediate tie rod structure of tractor suspension accessories, which can be purchased and installed commercially. Anti-sinking shoe plates 32 are installed on the lower sides of the rotary tiller 33. The power box of the rotary tiller 33 is connected to the rear output box 19 through the rotary tiller drive shaft 35.

[0062] The tillage wheel 12 includes two coaxially arranged rims 54. Multiple V-shaped plates 52 are evenly distributed axially between the two rims 54, with the tops of the V-shaped plates 52 facing outwards. A hub connecting plate 49 for connection to the drive axle 57 is coaxially arranged inside one of the rims 54. The hub connecting plate 49 is connected to the rim 54 via multiple spokes 51. The hub connecting plate 49 has multiple hub connecting bolt holes 50 for mounting bolts to achieve bolt connection with the drive axle 57. Rubber strips are spaced and cast around the outer side of the V-shaped plates 52. The rubber strips are divided into two sections: one section consists of a long, arc-shaped narrow rubber strip 55, and the other section consists of a short, arc-shaped narrow rubber strip 55 joined with a wide rubber strip 56. The wide rubber strip 56 is located at the end closest to the hub connecting plate 49.

[0063] The V-shaped plate 52 has a through-hole 60 for glue injection connection, and the inner side of the V-shaped plate 52 has an anti-detachment limiting ear 61 that passes through the glue injection connection hole 60 and is integrally formed with the rubber strip. The multiple spokes 51 are evenly distributed around the axis of the wheel rim 54.

[0064] The tillage wheels are installed in pairs on the drive axle 57, with multiple tillage wheels installed at each end of the drive axle 57. When installed on the drive axle 57, the hub connecting plate 49 of the tillage wheel faces outwards. At this time, the wheel rim 54 is provided with multiple connecting holes 53, which are arranged along the axial direction of the tillage wheel. Two adjacent tillage wheels at the same end are tightly connected to the wheel rim 54 by connecting bolts installed within the connecting holes 53. The multiple connecting holes 53 are evenly distributed around the axis of the wheel rim 54. The connection between two tillage wheels at the same end is a staggered V-shaped plate 52 arrangement. Example 3

[0065] A self-propelled stubble compaction and tillage machine includes a frame 3, a front axle 11, and a rear axle 16. The rear axle 16 is fixedly installed below the rear end of the frame 3, and the front axle 11 is rotatably installed below the front end of the frame 3. Both the front axle 11 and the rear axle 16 are equipped with tillage wheels 12. The front axle 11 is connected to a steering mechanism. An engine 17 is installed above the rear end of the frame 3, and a driver's cab 29 is installed on the frame 3. The engine 17 is connected to a clutch 18, the clutch 18 is connected to a rear output box 19, and the output box 19 is connected to a gearbox. 20. The gearbox 20 is connected to the reverse gearbox 22 via the drive shaft 21. The reverse gearbox 22 is connected to the transfer case 13. The transfer case 13 is connected to the rear axle 16 via the auxiliary gearbox 14 and the rear drive shaft 15, transmitting power to the rear axle 16. The transfer case 13 is connected to the front axle 11 via the universal coupling 6, the angle coupling 7 and the drive shaft 41, transmitting power to the front axle 11. The rear output box 19, gearbox 20, transfer case 13 and reverse gearbox 22 are all fixedly connected to the frame 3. A leveler is suspended at the rear end of the frame 3.

[0066] The cornering device 7 is vertically fixedly installed at the front end of the frame 3 via a bearing mounting seat 8. A rotating bushing 40 is rotatably installed in the bearing mounting seat 8 via a bearing 39. The bottom end of the rotating bushing 40 is fixedly connected to the housing of the front axle 11 via a connecting sleeve seat 10. The function of the connecting sleeve seat 10 is to fix the rotating bushing 40 to the housing of the front axle 11. When the connecting sleeve seat 10 is rotated, the front axle 11 can be driven to rotate as a whole around the rotating bushing 40 as the rotation center. The power output shaft of the corner gear 7 extends from the top of the rotating shaft sleeve 40. The power output shaft of the corner gear 7 is connected to the power shaft 41 through the flower shaft connecting sleeve 38. The power shaft 41 passes through the connecting sleeve 10 and is connected to the power input shaft or power input gear of the front axle 11. The steering mechanism includes a steering wheel 1, a hydraulic steering gear 2 and a drive cylinder 5. The steering wheel 1 is mounted on the frame 3 through the hydraulic steering gear 2. A drive cylinder 5 is hinged to each side of the frame 3 through a hinge mounting seat 4. The piston shaft of the drive cylinder 5 is hinged to the push hinge ear 9 which is laterally fixed at the upper end of the connecting sleeve 10. The hydraulic steering gear 2 and the drive cylinder 5 are connected to a hydraulic system.

[0067] The push hinge ear 9 extends out and connects to the upper front end of the connecting cylinder seat 10, forming a symmetrical fixed connection. The rotating bushing 40 adopts a double bearing fixing form, and the upper and lower ends of the rotating bushing 40 are respectively rotatably connected to the bearing mounting seat 8 through a bearing 39.

[0068] The hydraulic system includes an oil pump 42, a hydraulic oil tank 43, a pump oil pipe 45, a return oil pipe 46, a first supply oil pipe 47, and a second supply oil pipe 48. The inlet and outlet of the oil pump 42 are connected to the hydraulic oil tank 43 and the hydraulic steering gear 2 respectively via the pump oil pipe 45. The return oil port of the hydraulic steering gear 2 is connected to the hydraulic oil tank 43 via the return oil pipe 46. A radiator 44 is installed on the return oil pipe 46. One control inlet / outlet of the hydraulic steering gear 2 is connected to the inlet port of one drive cylinder 5 and the outlet port of another drive cylinder 5 via the first supply oil pipe 47. The other control inlet / outlet of the hydraulic steering gear 2 is connected to the outlet port of one drive cylinder 5 and the inlet port of another drive cylinder 5 via the second supply oil pipe 48. By rotating the steering wheel 1, the hydraulic steering gear 2 controls the corresponding oil circuit, causing one drive cylinder 5 to extend and the other drive cylinder 5 to retract. This, in turn, drives the hinge lug 9 to drive the connecting cylinder seat 10, which in turn drives the front axle 11 to rotate as a whole, thus achieving steering.

[0069] The leveler is either a leveling roller or a rotary tiller leveler. The appropriate leveler is installed by rotating it according to the customer's usage environment requirements. The leveling roller type leveler includes a leveling roller 23, a suspension chain 25, and suspension arms 26. Two suspension arms 26 are respectively hinged to hinged vertical lugs 28 fixed on both sides of the frame 3. A fixed rod is fixedly connected between the rear ends of the two suspension arms 26. A suspension lifting cylinder 27 is hinged between the fixed rod and the frame 3. The cylinder seat of the suspension lifting cylinder 27 is hinged to the frame 3, and the piston shaft of the suspension lifting cylinder 27 is hinged to the fixed rod. The leveling roller 23 is horizontally suspended below the rear ends of the suspension arms 26 via the suspension chain 25. The rotary tiller type leveler includes a rotary tiller 33 and hinged arms 34. Two fixed arms 36 are vertically fixedly connected to the upper front end of the rotary tiller 33 frame. The lower ends of the two fixed arms 36 are respectively connected to hinged vertical lugs 28 fixed on both sides of the frame 3 via a hinged arm 34. The lower end of the vertical lug 28 is hinged, the front end of the hinge arm 34 is hinged to the lower end of the hinge vertical lug 28, the rear end of the hinge arm 34 is hinged to the lower end of the fixed arm 36, the upper side of the rear end of the hinge arm 34 is hinged to the hinge vertical lug 28 through the suspension lifting cylinder 27, the cylinder seat of the suspension lifting cylinder 27 is hinged to the hinge vertical lug 28, the piston shaft of the suspension lifting cylinder 27 is hinged to the upper side of the rear end of the hinge arm 34, the upper ends of the two fixed arms 36 are respectively hinged to the upper end of the hinge vertical lug 28 through a telescopic adjustment arm 37, the telescopic adjustment arm 37 adopts the suspension center tie rod structure of tractor suspension accessories, which can be purchased and installed commercially. Anti-sinking shoe plates 32 are installed on the lower sides of the rotary tiller 33, and the power box of the rotary tiller 33 is connected to the rear output box 19 through the rotary tiller drive shaft 35.

[0070] The leveling roller 23 includes a large sleeve tube 30 and a small sleeve tube 31. The small sleeve tube 31 is movably sleeved inside both ends of the large sleeve tube 30. A telescopic drive cylinder 24 is installed on the large sleeve tube 30 to drive the small sleeve tube 31 to slide and extend within the large sleeve tube 30.

[0071] The tillage wheel 12 includes a first tillage wheel 58 and a second tillage wheel 59. Both the first tillage wheel 58 and the second tillage wheel 59 include two coaxially arranged wheel rims 54. Multiple V-shaped plates 52 are evenly distributed and connected axially between the two corresponding wheel rims 54 of the first tillage wheel 58 and the second tillage wheel 59. The top of the V-shaped plates 52 are arranged outward. A hub connecting plate 49 for connecting with the drive axle 57 is coaxially arranged in one of the wheel rims 54 of the second tillage wheel 59. The hub connecting plate 49 is connected to the wheel rim 54 by multiple spokes 51. The hub connecting plate 49 is provided with multiple hub connecting bolt holes 50 for placing bolts to achieve bolt connection with the drive axle 57. The outer side of the V-shaped plate 52 is wrapped with cast rubber strips at intervals. The rubber strip is divided into two sections. One section consists of a long, arc-shaped narrow rubber strip 55, and the other section consists of a short, arc-shaped narrow rubber strip 55 and a wide rubber strip 56 joined together. The wide rubber strip 56 is located at the end closest to the hub connecting plate 49. A glue injection connection hole 60 is provided through the V-shaped plate 52, and an anti-detachment limiting ear 61 is provided on the inner side of the V-shaped plate 52, passing through the glue injection connection hole 60 and integrally formed with the rubber strip. The multiple spokes 51 are evenly distributed around the axis of the wheel rim 54.

[0072] The first tillage wheel 58 and the second tillage wheel 59 are installed in pairs on the drive axle 57. Specifically, one first tillage wheel 58 and one second tillage wheel 59 are installed at each end of the drive axle 57. Alternatively, one first tillage wheel 58 and multiple second tillage wheels 59 can be installed at each end of the drive axle 57. The first tillage wheel 58 is located on the outermost side, and the hub connecting plate 49 of the innermost tillage wheel faces outward. The wheel rim 54 has multiple connecting holes 53 arranged along the axial direction of the tillage wheel. Two adjacent tillage wheels at the same end are tightly connected to the wheel rim 54 by connecting bolts installed within the connecting holes 53. The connection between two tillage wheels at the same end is a staggered V-shaped plate 52 arrangement.

[0073] The plurality of connecting holes 53 are evenly distributed around the axis of the wheel rim 54.

[0074] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A self-propelled stubble compaction and tillage machine, comprising a frame (3), a front axle (11), and a rear axle (16), wherein the rear axle (16) is fixedly installed below the rear end of the frame (3), the front axle (11) is rotatably installed below the front end of the frame (3), both the front axle (11) and the rear axle (16) are respectively equipped with tillage wheels (12), the front axle (11) is connected to a steering mechanism, an engine (17) is installed above the rear end of the frame (3), and a cab (29) is installed on the frame (3), characterized in that: The engine (17) is connected to a clutch (18), the clutch (18) is connected to a rear output box (19), the output box (19) is connected to a gearbox (20), the gearbox (20) is connected to a reverse gearbox (22) via a drive shaft (21), the reverse gearbox (22) is connected to a transfer case (13), the transfer case (13) is connected to the rear axle (16) via an auxiliary gearbox (14) and a rear drive shaft (15), the transfer case (13) is connected to the front axle (11) via a universal coupling (6), a corner joint (7) and a power shaft (41), and a leveler is suspended at the rear end of the frame (3).

2. The self-propelled stubble mulch and seedbed machine according to claim 1, characterized in that The cornering device (7) is vertically fixed at the front end of the frame (3) via a bearing mounting seat (8). A rotating bushing (40) is rotatably mounted in the bearing mounting seat (8) via a bearing (39). The bottom end of the rotating bushing (40) is fixedly connected to the housing of the front axle (11) via a connecting sleeve seat (10). The power output shaft of the cornering device (7) extends from the top of the rotating bushing (40). The power output shaft of the cornering device (7) is connected to the power shaft (41) via a swivel connecting sleeve (38). The power shaft (41) passes through the connecting sleeve seat (10). And connected to the power input shaft or power input gear of the front axle (11); the steering mechanism includes a steering wheel (1), a hydraulic steering gear (2) and a drive cylinder (5). The steering wheel (1) is mounted on the frame (3) through the hydraulic steering gear (2). A drive cylinder (5) is hinged on each side of the frame (3) through a hinge mounting seat (4). The piston shaft of the drive cylinder (5) is hinged to the push hinge ear (9) that is laterally fixed on the upper end of the connecting cylinder seat (10). The hydraulic steering gear (2) and the drive cylinder (5) are connected to a hydraulic system.

3. The self-propelled stubble mulch and seedbed machine according to claim 2, characterized in that The push hinge ear (9) extends and connects to the upper front end of the connecting cylinder seat (10) in a symmetrical fixed connection. The height of the push hinge ear (9) is flush with the height of the hinge mounting seat (4). The rotating bushing (40) adopts a double bearing fixed form. The upper and lower ends of the rotating bushing (40) are respectively connected to the bearing mounting seat (8) through a bearing (39).

4. The self-propelled stubble mulch and seedbed machine according to claim 2, characterized in that The hydraulic system includes an oil pump (42), a hydraulic oil tank (43), a pump oil pipe (45), a return oil pipe (46), an oil supply pipe one (47), and an oil supply pipe two (48). The inlet and outlet of the oil pump (42) are connected to the hydraulic oil tank (43) and the hydraulic steering gear (2) respectively through the pump oil pipe (45). The return oil port of the hydraulic steering gear (2) is connected to the hydraulic oil tank (43) through the return oil pipe (46). A radiator (44) is installed on the return oil pipe (46). One control inlet and outlet port of the hydraulic steering gear (2) is connected to the inlet port of one drive cylinder (5) and the outlet port of another drive cylinder (5) through the oil supply pipe one (47). The other control inlet and outlet port of the hydraulic steering gear (2) is connected to the outlet port of one drive cylinder (5) and the inlet port of another drive cylinder (5) through the oil supply pipe two (48).

5. The self-propelled stubble mulch and seedbed machine according to claim 1, characterized in that The tillage wheel (12) includes two coaxially arranged wheel rims (54), and multiple V-shaped plates (52) are evenly distributed between the two wheel rims (54) along the axial direction. The top of the V-shaped plates (52) is arranged outward. A hub connecting plate (49) for connecting with the drive axle (57) is coaxially arranged inside one of the wheel rims (54). The hub connecting plate (49) is connected to the wheel rim (54) through multiple spokes (51). The hub connecting plate (49) is provided with multiple hub connecting bolt holes (50) for placing bolts to achieve bolt connection with the drive axle (57). The outer side of the V-shaped plate (52) is wrapped with rubber strips at intervals.

6. The self-propelled stubble mulch and seedbed machine of claim 1, characterized in that: The tillage wheel (12) includes a first tillage wheel (58) and a second tillage wheel (59). Both the first tillage wheel (58) and the second tillage wheel (59) include two coaxially arranged wheel rims (54). Multiple V-shaped plates (52) are evenly distributed and connected along the axial direction between the two wheel rims (54) of the first tillage wheel (58) and the second tillage wheel (59). The top of the V-shaped plates (52) is arranged outward. A hub connecting plate (49) for connecting with the drive axle (57) is coaxially arranged in one of the wheel rims (54) of the second tillage wheel (59). The hub connecting plate (49) is connected to the wheel rim (54) through multiple spokes (51). The hub connecting plate (49) is provided with multiple hub connecting bolt holes (50) for placing bolts to achieve bolt connection with the drive axle (57). The outer side of the V-shaped plate (52) is wrapped with rubber strips at intervals.

7. The self-propelled stubble mulch and seedbed machine according to claim 5 or 6, characterized in that The rubber strip is divided into two sections. One section consists of a long arc-shaped narrow rubber strip (55), and the other section consists of a short arc-shaped narrow rubber strip (55) and a wide rubber strip (56) joined together. The wide rubber strip (56) is located at one end near the hub connecting plate (49).

8. The self-propelled stubble mulch and seedbed machine according to claim 5 or 6, characterized in that The V-shaped plate (52) is provided with a glue injection connection hole (60) through it, and the inner side of the V-shaped plate (52) is provided with an anti-detachment limiting ear (61) that passes through the glue injection connection hole (60) and is integrally formed and connected with the rubber strip.

9. The self-propelled stubble mulch and seedbed machine of claim 1, characterized in that: The leveling device is a leveling roller type leveling device or a rotary tiller type leveling device. The leveling roller type leveling device includes a leveling roller (23), a suspension chain (25), and suspension arms (26). The two suspension arms (26) are respectively hinged to the hinged vertical lugs (28) fixed on both sides of the frame (3). A fixed rod is fixedly connected between the rear ends of the two suspension arms (26). A suspension lifting cylinder (27) is hinged between the fixed rod and the frame (3). The cylinder seat of the suspension lifting cylinder (27) is hinged to the frame (3). The piston shaft of the suspension lifting cylinder (27) is hinged to the fixed rod. The leveling roller (23) is horizontally suspended below the rear ends of the suspension arms (26) by the suspension chain (25). The rotary tiller type leveling device includes a rotary tiller (33) and hinged arms (34). Two fixed arms (36) are vertically fixedly connected above the front end of the frame of the rotary tiller (33). The two fixed arms (36) are connected to the hinged vertical lugs (28) on both sides of the frame (34). The lower end of 6) is hinged to the lower end of the hinged vertical lugs (28) fixed on both sides of the frame (3) via a hinged arm (34). The front end of the hinged arm (34) is hinged to the lower end of the hinged vertical lugs (28), and the rear end of the hinged arm (34) is hinged to the lower end of the fixed arm (36). The upper side of the rear end of the hinged arm (34) is hinged to the hinged vertical lugs (28) via a suspension lifting cylinder (27). The cylinder seat of the suspension lifting cylinder (27) is connected to the lower end of the fixed arm (36). The hinged vertical lug (28) is hinged, the piston shaft of the suspension lifting cylinder (27) is hinged to the upper rear end of the hinged arm (34), the upper ends of the two fixed arms (36) are respectively hinged to the upper ends of the hinged vertical lug (28) through a telescopic adjustment arm (37), anti-sinking shoe plates (32) are respectively installed on the lower sides of the rotary tiller (33), and the power box of the rotary tiller (33) is connected to the rear output box (19) through the rotary tiller drive shaft (35).

10. The self-propelled stubble mulching and soil preparation machine according to claim 9, characterized in that The leveling roller (23) includes a large sleeve (30) and a small sleeve (31). The small sleeve (31) is movably sleeved inside both ends of the large sleeve (30). A telescopic drive cylinder (24) is installed on the large sleeve (30) to drive the small sleeve (31) to slide and extend inside the large sleeve (30).

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