Agricultural tillage land preparation machine

Abstract

The invention discloses an agricultural tillage land preparation machine which comprises a tractor body and a driving wheel, a rotary tillage assembly used for conducting rotary tillage on the ground is fixedly connected to the rear portion of the tractor body through a suspension device capable of being rotationally adjusted, and bearing wheels capable of keeping tightly attached to the ground are arranged below the tractor body. The detection assembly is used for detecting whether the height difference between the driving wheel and the bearing wheel changes or not. According to the invention, the bearing wheel is attached to the ground and cooperates with the detection assembly to detect the height difference between the bearing wheel and the driving wheel, so that the rotary tillage assembly can adjust the rotary tillage depth according to the soil height or humidity change, and the height between the rotary tillage assembly and the ground is adjusted according to the height difference change between the driving wheel and the bearing wheel; the rotary tillage depth of the rotary tillage assembly on the land is kept consistent, and the situation that the fertilizer is too close to or too far away from the seeds, and consequently the seeds are poor in development or die is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, in particular to an agricultural tillage and land preparation machine. Background Art

[0002] A tiller is a type of agricultural machinery used for tilling and preparing land. It not only turns the soil, breaking up compacted layers and increasing its aeration and water permeability, but also levels uneven land, making it relatively flat. Furthermore, through rotary tillage and other operations, it chops up weeds and crop residue from the previous season and incorporates them into the soil. This not only reduces competition from weeds for the next crop, but also allows the residue to rot in the soil, increasing its organic matter content.

[0003] For example, Chinese Patent No. CN109661864A discloses an agricultural rotary tiller, comprising a rotary tiller body, a rotary tiller unit, and a power unit. The rotary tiller unit comprises a rotary shaft, a rotary blade, and a fender. The fender covers the rotary blade. The power unit drives the rotary shaft to rotate, which is rotatably connected to the rotary tiller body. The fender is abutted against the rotary tiller body. The rotary tiller body is provided with a first permanent magnet, and the fender is an electromagnet. The rotary tiller shaft is provided with a first groove, and the fender is provided with a second groove. A second permanent magnet is slidably connected within the second groove. A first elastic member is fixedly connected between the second permanent magnet and the bottom of the second groove. The first and second permanent magnets have opposite magnetic poles to the fender when energized. This solution, through the coordination of the fender, rotary shaft, and rotary tiller body, enables the agricultural rotary tiller body to exit a pit, thereby resolving the problem of agricultural rotary tillers sinking when operating in muddy ground or deep water, as previously known in the art.

[0004] However, when operating on land with low flatness using the above method, it is still necessary to manually adjust the rotary tillage depth or the levelness of the agricultural implement. For example, when operating on land with low flatness, since there may be a height difference between the rotary tillage unit and the walking wheel, the rotary tillage depth may change synchronously when the walking wheel is raised or lowered, which is not conducive to leveling the land. Summary of the Invention

[0005] The object of the present invention is to provide an agricultural tillage and land preparation machine to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an agricultural tillage machine, comprising a tractor body and drive wheels, a rotary tillage assembly for rotary tilling the ground fixedly connected to the rear of the tractor body via a rotatably adjustable suspension device, and a load-bearing wheel capable of maintaining close contact with the ground provided below the tractor body;

[0007] Also included is a detection component, the detection component is used to detect whether the height difference between the driving wheel and the load-bearing wheel changes;

[0008] It also includes an adjustment component, which is used to adjust the height of the rotary tillage component from the ground according to the change of the height difference between the driving wheel and the load-bearing wheel.

[0009] Preferably, a fixed block is fixedly installed under the tractor body, a sliding frame is fixedly installed on both sides of the fixed block, a slider is vertically slidably installed in the sliding frame, springs are provided between both sides of the slider and the inner wall of the sliding frame, a rotating shaft is rotatably installed between the two sliders, and the load-bearing wheel is fixedly installed on the outer wall of the rotating shaft.

[0010] Preferably, the detection component includes a drive shaft fixedly installed in the tractor body, the driving wheel is fixedly installed on the outer wall of the driving shaft, an elastic connecting rod is fixedly connected between the driving shaft and the rotating shaft, the elastic connecting rod consists of fixed ends on both sides and an elastic end in the middle, two sets of fixing frames are fixedly installed in the tractor body, and the bottom surface of the fixing frame is parallel to the top surface of the elastic connecting rod, the top surfaces of the elastic ends on both sides of the elastic connecting rod are fixedly connected to vertical rods, one end of the two vertical rods is commonly connected to parallel plates that can be parallel to the elastic connecting rod, a sliding shaft frame is slidably installed on the inner side wall of the fixing frame, and a rolling pin that can slide between the parallel plate and the bottom surface of the fixing frame is rotatably installed on the side wall of the sliding shaft frame.

[0011] Preferably, the adjustment assembly includes a fixed plate fixedly mounted on the side wall of the fixed frame, the fixed plate is rotatably mounted with a rotating handle through a connecting rod, a sliding handle is rotatably mounted on one end of the rotating handle, and the sliding handle can slide along the connecting axis between it and the rotating handle, an arc-shaped end is provided on the side of the rotating handle close to the fixed plate, and a sliding groove for sliding the arc-shaped end is provided on the bottom surface of the fixed plate, a fixed ring is rotatably mounted on the outer wall of the rolling pin, and a detent is provided on both sides of the fixed ring, a pressure sensor is provided in the detent, and the detent is connected to the driving structure of the suspension device through an electrical signal.

[0012] Preferably, the rotary tillage assembly includes a rotary tillage body fixedly mounted at one end of the suspension device, the rotary tillage body being provided with a rotatable rotating sleeve, the rotary sleeve being provided with a plurality of rotary tillage blades, the rotary tillage blades having two states: in state one, the rotary tillage blades rotate at a constant speed and maintain a constant rotary tillage radius; in state two, the rotary tillage blades rotate at an accelerated speed while causing the rotary tillage radius to reciprocately contract and expand;

[0013] The utility model also comprises a switching component, which is used to drive the rotary tiller to switch back and forth between two states.

[0014] Preferably, the rotating sleeve is rotatably mounted on the inner wall of the rotary tiller body, the inner wall of the rotating sleeve is fixedly connected to multiple groups of fixed tubes through multiple groups of connecting rods, the inner wall of the rotary tiller body is installed with a rotating shaft that can be rotatably adjusted, the rotating shaft passes through multiple groups of fixed tubes and is rotatably connected to each fixed tube, the outer wall of the rotating shaft before every two of the fixed tubes is fixedly mounted with an eccentric wheel, the outer wall of the eccentric wheel is rotatably mounted with an eccentric ring, the side wall of the eccentric ring is rotatably connected to multiple groups of limiting rods, the inner wall of the rotating sleeve is fixedly mounted with multiple groups of fixed shaft seats corresponding to the limiting rods one by one, an L-shaped rod is rotatably connected between the fixed shaft seat and the limiting rod, the rotating sleeve is provided with a groove for one end of the L-shaped rod to pass through, and the rotary tiller blade is fixedly mounted on the end of the L-shaped rod.

[0015] Preferably, the switching assembly includes a sliding sleeve rod installed on both sides of the outer wall of the rotating shaft and capable of sliding adjustment, a sliding ring is fixedly installed at one end of the sliding sleeve rod, the outer wall of the sliding ring is provided with annular teeth, and the inner wall of the rotating sleeve is also provided with annular teeth that can engage or disengage with the annular teeth, a fixed gear is fixedly installed on the outer wall of the rotating shaft, and the side wall of the sliding ring is provided with an annular tooth groove for the fixed gear to be embedded and engaged.

[0016] Preferably, side cavities are fixedly installed on both sides of the rotary tiller body, the rotating shaft penetrates into the side cavity and is rotatably installed on the inner side wall of the side cavity, a pulley is fixedly installed on the outer wall of one end of the sliding sleeve rod penetrating into the side cavity, and a transmission shaft is also rotatably installed on the inner wall of the rotary tiller body, pulleys are fixedly installed at both ends of the transmission shaft, and the pulleys on the same side are all driven by belts, a motor is fixedly installed on the tractor body, a rotating rod is rotatably installed on the top of the rotary tiller body, the main shaft of the motor is fixedly connected to the end of the rotating rod through a universal joint, and a worm is fixedly installed on the outer wall of the rotating rod, and a turbine that can mesh with the worm is fixedly installed on the outer wall of the transmission shaft, and the sliding sleeve rod and the motor are connected to the pin through electrical signals.

[0017] Preferably, the vertical cross-section of the parallel plate is an isosceles trapezoid.

[0018] Preferably, the fixed block and one side of the rotary tiller body are both provided with a scraper.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention enables the load-bearing wheel to fit the ground and cooperates with the detection component to detect the height difference between the load-bearing wheel and the driving wheel, so that the rotary tillage component can adjust the rotary tillage depth according to changes in soil height or humidity. The height difference between the driving wheel and the load-bearing wheel changes to adjust the height of the rotary tillage component from the ground, ensuring that the rotary tillage depth of the land by the rotary tillage component remains consistent, avoiding the fertilizer being too close or too far from the seeds, resulting in poor development or death of the seeds.

[0021] 2. The present invention switches the rotary tiller between two groups of states so that when the rotary tiller cuts compacted or other hard soil, the rotary tillage radius can be shortened when the rotary tiller enters the soil, thereby reducing the resistance of the rotary tiller when entering the soil, and increasing the rotation speed of the rotary tiller to improve the cutting force of the rotary tiller on the soil. After the rotary tiller breaks through the compacted layer, its rotary tillage depth is gradually increased, thereby preventing the rotary tiller from being unable to penetrate the compacted soil to till the land while reducing the relative stress on the rotary tiller. Moreover, the rotary tiller is prone to adhere to the soil when the soil is highly moist. At this time, the rotary tiller enters state one and stops changing the rotary tillage radius, thereby preventing soil from entering the rotating sleeve to hinder the contraction and expansion of the L-shaped rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0023] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0024] Figure 3 A partial cross-sectional view of the detection assembly of the present invention;

[0025] Figure 4 For the present invention Figure 3 Isometric diagram of;

[0026] Figure 5 A partial cross-sectional view of the adjustment assembly of the present invention;

[0027] Figure 6 Schematic diagram of the three-dimensional structure of the rotary tillage assembly in the present invention;

[0028] Figure 7 is a side cross-sectional view of the rotary tillage assembly of the present invention;

[0029] Figure 8 For the present invention Figure 7 Isometric diagram of;

[0030] Figure 9 is a front cross-sectional view of the rotary tillage assembly of the present invention;

[0031] Figure 10 For the present invention Figure 9 Isometric diagram of;

[0032] Figure 11 This is a flowchart of the present invention when it is running.

[0033] In the figure: 1. tractor body; 2. suspension device; 3. rotary tiller body; 4. universal joint; 5. rotating rod; 6. transmission shaft; 7. pulley; 8. belt; 9. side cavity; 10. rotating sleeve; 11. sliding sleeve rod; 12. rotating shaft; 13. fixed gear; 14. fixed pipe; 15. eccentric wheel; 16. limit rod; 17. L-shaped rod; 18. rotary tiller; 19. fixed shaft seat; 20. connecting rod; 21. eccentric ring; 22. sliding ring; 23. driving wheel; 24. driving shaft; 25. elastic connecting rod; 26. fixing frame; 27. rotating shaft; 28. sliding frame; 29. ​​load-bearing wheel; 30. fixed block; 31. vertical rod; 32. parallel plate; 33. rolling pin; 34. fixed plate; 35. rotating handle; 36. sliding handle; 37. fixing ring; 38. slider. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1 to 11 The present invention provides a technical solution: an agricultural tillage machine, comprising a tractor body 1 and a driving wheel 23, a rotary tillage assembly for rotary tilling the ground fixedly connected to the rear of the tractor body 1 via a rotatably adjustable suspension device 2, and a load-bearing wheel 29 capable of maintaining close contact with the ground provided below the tractor body 1;

[0036] It also includes a detection component for detecting whether the height difference between the driving wheel 23 and the load-bearing wheel 29 has changed;

[0037] It also includes an adjustment component, which is used to adjust the height of the rotary tillage component from the ground according to the change of the height difference between the driving wheel 23 and the load-bearing wheel 29.

[0038] When the device is in operation, the tractor body 1 is first driven into the cultivated land to be worked, and the height of the rotary tillage assembly is preset through the suspension device 2, and then the rotary tillage assembly is pulled to travel on the cultivated land. If the land flatness is high, the height difference between the load-bearing wheel 29 and the driving wheel 23 does not change significantly, then the rotary tillage assembly maintains the same preset height to till and level the land, ensuring that the device tills the land at a consistent depth. If the land flatness changes, the adjustment assembly adjusts the height of the rotary tillage assembly from the ground according to the height difference between the driving wheel 23 and the load-bearing wheel 29. For example, when the tractor body 1 drives into a low-lying section or a section with high soil moisture, the driving wheel 23 enters a depression or sinks into the soil with high moisture due to its own gravity. If the rotary tillage assembly still tills at the original height, when both the driving wheel 23 and the load-bearing wheel 29 are driven into After the low-lying road section, the tillage depth of the rotary tillage assembly increases compared to the previous depth, which may cause the fertilizer buried in the soil to be too far away from the seeds, which is not conducive to the seeds' absorption of nutrients in the fertilizer. At this time, the adjusting assembly increases the height of the rotary tillage assembly according to the height difference between the driving wheel 23 and the carrying wheel 29 before entering the same road section, so that the rotary tillage depth of the rotary tillage assembly on the land remains consistent. When the tractor body 1 enters a compacted road section or a raised road section, the rotary tillage depth of the rotary tillage assembly decreases (the rotary tillage assembly on the compacted road section is difficult to cut the soil, resulting in a decrease in the actual rotary tillage height). The height of the rotary tillage assembly can be lowered according to the height difference between the driving wheel 23 and the carrying wheel 29 before entering the same road section, so that the rotary tillage depth of the rotary tillage assembly on the land remains consistent, thereby avoiding the burn of the seedlings caused by the decrease in rotary tillage depth.

[0039] In this way, by making the load-bearing wheel 29 fit into the ground and cooperating with the detection component to detect the height difference between the load-bearing wheel 29 and the driving wheel 23, the rotary tillage component can adjust the rotary tillage depth according to the changes in soil height or humidity. The height difference between the driving wheel 23 and the load-bearing wheel 29 changes to adjust the height of the rotary tillage component from the ground, ensuring that the rotary tillage depth of the land by the rotary tillage component remains consistent, avoiding the fertilizer being too close or too far from the seeds, resulting in subsequent seed maldevelopment or death.

[0040] Furthermore, a fixed block 30 is fixedly installed under the tractor body 1, and a sliding frame 28 is fixedly installed on both sides of the fixed block 30. A slider 38 is vertically slidably installed in the sliding frame 28. Springs are provided between both sides of the slider 38 and the inner wall of the sliding frame 28. A rotating shaft 27 is rotatably installed between the two sliders 38, and a load-bearing wheel 29 is fixedly installed on the outer wall of the rotating shaft 27.

[0041] According to the above embodiment, a method for installing the load-bearing wheel 29 is provided. Figure 2Because springs are provided between both sides of the slider 38 and the inner wall of the sliding frame 28, the load-bearing wheel 29 is in contact with the ground only under the action of its own gravity and will not sink into the ground even when the soil moisture is high. That is, when the driving wheel 23 sinks into the ground or enters a raised section of the road, it uses itself as a crossbeam to detect whether the height of the driving wheel 23 changes, thereby completing the detection of the height difference between the load-bearing wheel 29 and the driving wheel 23.

[0042] Furthermore, the detection component includes a drive shaft 24 fixedly installed in the tractor body 1, a drive wheel 23 fixedly installed on the outer wall of the drive shaft 24, an elastic link 25 fixedly connected between the drive shaft 24 and the rotating shaft 27, the elastic link 25 consists of fixed ends on both sides and an elastic end in the middle, two sets of fixed frames 26 are fixedly installed in the tractor body 1, and the bottom surface of the fixed frame 26 is parallel to the top surface of the elastic link 25, the top surfaces of the elastic ends on both sides of the elastic link 25 are fixedly connected with vertical rods 31, one end of the two vertical rods 31 is commonly connected to a parallel plate 32 that can be parallel to the elastic link 25, a sliding shaft frame is slidably installed on the inner side wall of the fixed frame 26, and a rolling pin 33 that can slide between the parallel plate 32 and the bottom surface of the fixed frame 26 is rotatably installed on the side wall of the sliding shaft frame.

[0043] According to the above embodiment, a method for installing a detection component is provided. Figure 3 When the driving wheel 23 enters a low-lying road section or sinks into the ground due to high soil moisture, the load-bearing wheel 29 moves upward relative to the driving wheel 23, that is, the elastic connecting rod 25 rotates counterclockwise with the driving shaft 24 as the center, driving the rotating shaft 27 to slide upward along the sliding frame 28. As the linear distance between the rotating shaft 27 and the driving shaft 24 is shortened, the side of the elastic connecting rod 25 close to the rotating shaft 27 contracts and causes the vertical rod 31 on the same side to perform a larger vertical displacement than the vertical rod 31 on the opposite side. At this time, the parallel plates 32 deflect together, and the rolling pin 33 slides upward under the pressure of the parallel plates 32 and the fixing frame 26. When the driving wheel 23 enters a raised section or drives upward due to compaction of the soil, the driving wheel 23 As the load-bearing wheel 29 moves upward, the elastic connecting rod 25 rotates clockwise with the driving shaft 24 as the center, driving the rotating shaft 27 to slide downward along the sliding frame 28. At this time, the elastic connecting rod 25 drives one side of the shaft 24 to contract and causes the vertical rod 31 on the same side to perform a larger vertical displacement than the vertical rod 31 on the opposite side. The parallel plate 32 deflects and squeezes the rolling pin 33 downward to slide. The up and down sliding of the rolling pin 33 can be used to detect whether the height difference between the load-bearing wheel 29 and the driving wheel 23 has changed, and the change in the height difference between the load-bearing wheel 29 and the driving wheel 23 can be measured by the sliding distance of the rolling pin 33, so as to achieve the purpose of monitoring land changes and adjusting the rotary tillage depth in real time.

[0044] Furthermore, the adjustment assembly includes a fixed plate 34 fixedly mounted on the side wall of the fixed frame 26, and the fixed plate 34 is rotatably mounted with a rotating handle 35 through a connecting rod, and a sliding handle 36 is rotatably mounted on one end of the rotating handle 35, and the sliding handle 36 can slide along the connecting axis between it and the rotating handle 35, and the rotating handle 35 is provided with an arc-shaped end on the side close to the fixed plate 34, and the bottom surface of the fixed plate 34 is provided with a sliding groove for the arc-shaped end to slide, and a fixed ring 37 is rotatably mounted on the outer wall of the rolling pin 33, and a detent pin is provided on both sides of the fixed ring 37, a pressure sensor is provided in the detent pin, and the detent pin is connected to the driving structure of the suspension device 2 through an electrical signal.

[0045] According to the above embodiment, a specific embodiment of the adjustment component is provided. Figure 5 When the height difference between the load-bearing wheel 29 and the driving wheel 23 does not change, the sliding handle 36 and the rotating handle 35 are in the same straight line and form a balance point under the action of the spring. When the height difference between the load-bearing wheel 29 and the driving wheel 23 changes, that is, the rolling pin 33 rolls along the bottom surface of the fixing frame 26, it will drive the fixing ring 37 to rotate until the fixing ring 37 breaks through the rotation limit of the sliding handle 36 and the rotating handle 35 by the spring through the detent pin. Only then will the driving structure of the suspension device 2 (such as a motor) be used to adjust the height of the suspension device 2, so as to avoid the load-bearing wheel 29 being too sensitive to ground changes, causing the adjustment component to always be in an adjustment state, which will instead cause the soil to be tilled at different depths.

[0046] Furthermore, the rotary tillage assembly includes a rotary tillage body 3 fixedly mounted at one end of the suspension device 2, a rotatable rotating sleeve 10 is provided in the rotary tillage body 3, and a plurality of rotary tillage blades 18 are provided in the rotary sleeve 10. The rotary tillage blades 18 have two states: in state 1, the rotary tillage blades 18 rotate at a constant speed and maintain a constant rotary tillage radius; in state 2, the rotary tillage blades 18 rotate at an accelerated speed while causing the rotary tillage radius to reciprocately contract and expand;

[0047] The utility model further comprises a switching component for driving the rotary tiller 18 to switch back and forth between two states.

[0048] Furthermore, the rotating sleeve 10 is rotatably installed on the inner wall of the rotary tiller body 3, and the inner wall of the rotating sleeve 10 is fixedly connected to multiple groups of fixed tubes 14 through multiple groups of connecting rods 20. The inner wall of the rotary tiller body 3 is installed with a rotating shaft 12 that can be rotated and adjusted. The rotating shaft 12 passes through multiple groups of fixed tubes 14 and is rotatably connected to each fixed tube 14. The outer wall of the rotating shaft 12 between every two fixed tubes 14 is fixedly installed with an eccentric wheel 15, and the outer wall of the eccentric wheel 15 is rotatably installed with an eccentric ring 21. The side wall of the eccentric ring 21 is rotatably connected to multiple groups of limit rods 16. The inner wall of the rotating sleeve 10 is fixedly installed with multiple groups of fixed shaft seats 19 corresponding to the limit rods 16 one by one, and an L-shaped rod 17 is rotatably connected between the fixed shaft seat 19 and the limit rod 16. A groove is opened on the rotating sleeve 10 for one end of the L-shaped rod 17 to pass through, and the rotary tiller blade 18 is fixedly installed at the end of the L-shaped rod 17.

[0049] According to the above embodiment, a specific embodiment of a rotary tiller 18 is provided. Figure 8 When the external driving structure drives the rotating sleeve 10 to rotate, the rotating sleeve 10 drives the fixed tube 14 to rotate together through the connecting rod 20, and at the same time drives the L-shaped rod 17, the limiting rod 16 and the eccentric ring 21 to rotate together through the fixed shaft seat 19. At this time, the rotating shaft 12 and the eccentric wheel 15 are relatively stationary, so that the multiple groups of limiting rods 16 gradually increase or decrease the linear distance between them and the fixed shaft seat 19 when rotating around the eccentric wheel 15. For details, see Figure 9 When the L-shaped rod 17 on the far left rotates clockwise (at this time the rotary tiller 18 at the end has just been rotated out of the soil), the distance between the limit rod 16 on the same side and the nearest fixed shaft seat 19 is the longest. When it moves to the left or right side (at this time the rotary tiller 18 on that side is about to enter the soil), the distance between the limit rod 16 on the same side and the nearest fixed shaft seat 19 is the shortest. In this way, the L-shaped rod 17 and the rotary tiller 18 will contract or expand outward while rotating, changing their rotary tillage radius while driving the rotating sleeve 10 to accelerate the rotation through the external drive structure, thereby increasing the rotation speed of the rotary tiller 18 when entering the soil, and the rotary tiller can enter state two. When the rotating shaft 12 and the rotating sleeve 10 are driven to rotate at a uniform speed together by an external drive structure such as a motor, since the limit rod 16 and the eccentric wheel 15 are relatively stationary relative to the rotating shaft 12, the distance between the limit rod 16 and the fixed shaft seat 19 no longer changes, that is, the rotary tiller enters state one.

[0050] In this way, by switching the rotary tiller 18 between two groups of states, the rotary tiller 18 can shorten the rotary tillage radius when cutting compacted or other hard soil, reduce the resistance of the rotary tiller 18 when entering the soil, and increase the rotation speed of the rotary tiller 18 to increase the cutting force of the soil by the rotary tiller 18, and gradually increase the rotary tillage depth of the rotary tiller 18 after breaking through the compacted layer, thereby preventing the rotary tiller 18 from being unable to penetrate the compacted soil to till the land while reducing the relative stress on the rotary tiller 18, and the rotary tiller 18 is prone to adhere to the soil when the soil is highly moist. At this time, the rotary tiller 18 enters state one and stops changing the rotary tillage radius, thereby preventing soil from entering the rotating sleeve 10 to hinder the contraction and expansion of the L-shaped rod 17.

[0051] It is worth mentioning that since the tillage angle of the rotary blade 18 will change synchronously with expansion or contraction when it is performing rotary tillage in state two, the rotary blade 18 will gradually move away from the position of the fixed shaft seat 19 on the same side after entering the soil, and the distance between its end and the center of rotation will gradually shorten, so that the rotary blade 18 will break through the compaction and enter the soil to form a shoveling action, thereby increasing the tillage force on the land.

[0052] Furthermore, the switching assembly includes a sliding sleeve rod 11 installed on both sides of the outer wall of the rotating shaft 12 and capable of sliding adjustment. A sliding ring 22 is fixedly installed at one end of the sliding sleeve rod 11. The outer wall of the sliding ring 22 is provided with annular teeth, and the inner wall of the rotating sleeve 10 is also provided with annular teeth that can engage or disengage with the annular teeth. A fixed gear 13 is fixedly installed on the outer wall of the rotating shaft 12, and an annular tooth groove is provided on the side wall of the sliding ring 22 for the fixed gear 13 to be embedded and engaged.

[0053] According to the above embodiment, a specific embodiment of a switching component is provided. Figure 7 When the external driving structure, such as a cylinder, drives the sliding sleeve rods 11 to move away from each other, the sliding sleeve rod 11 drives the sliding ring 22 so that the annular teeth on the outer wall of the sliding ring 22 engage with the annular teeth on the inner wall of the rotating sleeve 10, and at the same time drives the annular tooth grooves on the side wall of the sliding ring 22 to disengage from the meshing with the fixed gear 13, and the rotating sleeve 10 can be driven to rotate by driving the sliding sleeve rod 11 to rotate, entering state two, and when the sliding sleeve rod 11 drives the sliding ring 22 so that the annular teeth on the outer wall of the sliding ring 22 engage with the annular teeth on the inner wall of the rotating sleeve 10, and at the same time drives the annular teeth on the side wall of the sliding ring 22 to engage with the fixed gear 13, the rotating sleeve 10 can be rotated synchronously with the rotating shaft 12, so that the limiting rod 16 and the eccentric wheel 15 are relatively stationary relative to the rotating shaft 12, entering state one, and the switching between the two states of the rotary blade 18 can be completed.

[0054] Furthermore, side cavities 9 are fixedly installed on both sides of the rotary tiller body 3, the rotating shaft 12 penetrates into the side cavity 9 and is rotatably installed on the inner wall of the side cavity 9, the sliding sleeve 11 penetrates into the side cavity 9 and is fixedly installed on the outer wall of one end with a pulley 7, the inner wall of the rotary tiller body 3 is also rotatably installed with a transmission shaft 6, and pulleys 7 are fixedly installed at both ends of the transmission shaft 6. The pulleys 7 on the same side are all transmitted by belts 8, a motor is fixedly installed in the tractor body 1, and a rotating rod 5 is rotatably installed on the top of the rotary tiller body 3, the main shaft of the motor is fixedly connected to the end of the rotating rod 5 through the universal joint 4, and a worm is fixedly installed on the outer wall of the rotating rod 5, and a turbine that can mesh with the worm is fixedly installed on the outer wall of the transmission shaft 6, and the sliding sleeve 11 and the motor are connected to the pin through electrical signals.

[0055] According to the above embodiment, a specific embodiment for driving the sliding sleeve rod 11 to rotate is provided. Since the rotating rod 5 and the transmission shaft 6 are driven by a worm gear, the self-locking between the worm gear and the worm gear prevents the rotary blade 18 from reversing due to the reaction force during cutting when the soil is continuously tilled, thereby preventing the rotary blade 18 from reducing the cutting force on the soil and preventing it from breaking through the compacted layer. In addition, the rotating rod 5 and the transmission shaft 6 can be arranged to rotate through a bevel gear to reduce the effect of friction on the transmission ratio between the rotating rod 5 and the transmission shaft 6, thereby increasing the rotation speed of the rotary blade 18. This is suitable for sandy soil, and the transmission method of the rotating rod 5 and the transmission shaft 6 can be selected according to actual conditions.

[0056] Furthermore, the vertical cross-section of the parallel plate 32 is an isosceles trapezoid.

[0057] According to the above embodiment, by setting the vertical cross-section of the parallel plate 32 to be an isosceles trapezoid, it is possible to prevent the rolling pin 33 from sliding in a direction opposite to the preset sliding direction under the pressure of the parallel plate 32, resulting in reverse adjustment.

[0058] Furthermore, a scraper is provided on one side of the fixing block 30 and the rotary tiller body 3 .

[0059] According to the above embodiment, since a scraper is provided on one side of the fixed block 30, it can be prevented that a large amount of soil adheres to the load-bearing wheel 29 during the rolling process on the ground, causing its own mass to increase, causing the load-bearing wheel 29 to sink into the ground and increase the measurement error, resulting in a decrease or increase in the tillage depth. The scraper on one side of the rotary tiller body 3 can smooth the tilled ground, further increasing the flatness of the land after operation.

[0060] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An agricultural tillage and land preparation machine, comprising a tractor body (1) and a drive wheel (23), characterized in that: A rotary tillage assembly for rotary tilling the ground is fixedly connected to the rear of the tractor body (1) via a rotatably adjustable suspension device (2), and a load-bearing wheel (29) capable of maintaining close contact with the ground is provided below the tractor body (1); It also includes a detection component, which is used to detect whether the height difference between the driving wheel (23) and the load-bearing wheel (29) changes; It also includes an adjustment component, which is used to adjust the height of the rotary tillage component from the ground according to the change of the height difference between the driving wheel (23) and the load-bearing wheel (29).

2. The agricultural tillage and land preparation machine according to claim 1, characterized in that: A fixed block (30) is fixedly installed below the tractor body (1), and sliding frames (28) are fixedly installed on both sides of the fixed block (30). A slider (38) is vertically slidably installed in the sliding frame (28). Springs are provided between both sides of the slider (38) and the inner wall of the sliding frame (28). A rotating shaft (27) is rotatably installed between the two sliders (38), and the load-bearing wheel (29) is fixedly installed on the outer wall of the rotating shaft (27).

3. The agricultural tillage and land preparation machine according to claim 2, characterized in that: The detection assembly comprises a drive shaft (24) fixedly mounted in the tractor body (1), the drive wheel (23) fixedly mounted on the outer wall of the drive shaft (24), an elastic connecting rod (25) fixedly connected between the drive shaft (24) and the rotating shaft (27), the elastic connecting rod (25) consisting of fixed ends on both sides and an elastic end in the middle, two sets of fixing frames (26) fixedly mounted in the tractor body (1), the bottom surface of the fixing frame (26) being parallel to the top surface of the elastic connecting rod (25), the top surfaces of the elastic ends on both sides of the elastic connecting rod (25) being fixedly connected to vertical rods (31), one end of the two vertical rods (31) being commonly connected to a parallel plate (32) capable of being parallel to the elastic connecting rod (25), a sliding shaft frame being slidably mounted on the inner side wall of the fixing frame (26), and a rolling pin (33) capable of sliding between the parallel plate (32) and the bottom surface of the fixing frame (26) being rotatably mounted on the side wall of the sliding shaft frame.

4. The agricultural tillage and land preparation machine according to claim 3, characterized in that: The adjustment assembly includes a fixed plate (34) fixedly mounted on the side wall of the fixed frame (26), the fixed plate (34) is rotatably mounted with a rotating handle (35) through a connecting rod, a sliding handle (36) is rotatably mounted on one end of the rotating handle (35), and the sliding handle (36) can slide along the connecting axis between it and the rotating handle (35), the rotating handle (35) is provided with an arcuate end on the side close to the fixed plate (34), and the bottom surface of the fixed plate (34) is provided with a sliding groove for the sliding of the arcuate end, the outer wall of the rolling pin (33) is rotatably mounted with a fixed ring (37), both sides of the fixed ring (37) are provided with a deflecting pin, a pressure sensor is provided in the deflecting pin, and the deflecting pin is connected to the driving structure of the suspension device (2) through an electrical signal.

5. The agricultural tillage and soil preparation machine according to any one of claims 1 to 4, characterized in that: The rotary tillage assembly comprises a rotary tillage body (3) fixedly mounted on one end of a suspension device (2); a rotatable rotating sleeve (10) is provided in the rotary tillage body (3); a plurality of rotary tillage blades (18) are provided in the rotary sleeve (10); the rotary tillage blades (18) have two states: in state one, the rotary tillage blades (18) rotate at a constant speed and maintain a constant rotary tillage radius; and in state two, the rotary tillage blades (18) rotate at an accelerated speed while causing the rotary tillage radius to reciprocately contract and expand. It also includes a switching component, which is used to drive the rotary tiller (18) to switch back and forth between two states.

6. The agricultural tillage and land preparation machine according to claim 5, characterized in that: The rotating sleeve (10) is rotatably mounted on the inner wall of the rotary tiller body (3). The inner wall of the rotating sleeve (10) is fixedly connected to multiple groups of fixed tubes (14) via multiple groups of connecting rods (20). A rotating shaft (12) capable of rotational adjustment is mounted on the inner wall of the rotary tiller body (3). The rotating shaft (12) passes through the multiple groups of fixed tubes (14) and is rotatably connected to each fixed tube (14). An eccentric wheel (15) is fixedly mounted on the outer wall of the rotating shaft (12) between each two fixed tubes (14). The eccentric wheel (15) 5) An eccentric ring (21) is rotatably mounted on the outer wall, and the side wall of the eccentric ring (21) is rotatably connected to multiple groups of limit rods (16). Multiple groups of fixed shaft seats (19) corresponding to the limit rods (16) are fixedly mounted on the inner wall of the rotating sleeve (10). An L-shaped rod (17) is rotatably connected between the fixed shaft seat (19) and the limit rod (16). A groove is provided on the rotating sleeve (10) for allowing one end of the L-shaped rod (17) to pass through, and the rotary tiller (18) is fixedly mounted on the end of the L-shaped rod (17).

7. The agricultural tillage and land preparation machine according to claim 6, characterized in that: The switching assembly comprises a sliding sleeve rod (11) mounted on both sides of the outer wall of the rotating shaft (12) and capable of sliding adjustment, a sliding ring (22) being fixedly mounted on one end of the sliding sleeve rod (11), an annular tooth being provided on the outer wall of the sliding ring (22), and an annular tooth being capable of engaging with or disengaging the annular tooth being also provided on the inner wall of the rotating sleeve (10), a fixed gear (13) being fixedly mounted on the outer wall of the rotating shaft (12), and an annular tooth groove being capable of being embedded and engaged with the fixed gear (13) being provided on the side wall of the sliding ring (22).

8. The agricultural tillage and land preparation machine according to claim 7, characterized in that: Side cavities (9) are fixedly installed on both sides of the rotary tiller body (3), the rotating shaft (12) penetrates the side cavity (9) and is rotatably installed on the inner wall of the side cavity (9), the outer wall of one end of the sliding sleeve (11) penetrates the side cavity (9) and is fixedly installed with a pulley (7), the inner wall of the rotary tiller body (3) is also rotatably installed with a transmission shaft (6), both ends of the transmission shaft (6) are fixedly installed with pulleys (7), and the pulleys (7) on the same side are driven by belts (8), a motor is fixedly installed in the tractor body (1), a rotating rod (5) is rotatably installed on the top of the rotary tiller body (3), the main shaft of the motor is fixedly connected to the end of the rotating rod (5) through a universal shaft (4), and a worm is fixedly installed on the outer wall of the rotating rod (5), and a turbine that can mesh with the worm is fixedly installed on the outer wall of the transmission shaft (6), and the sliding sleeve (11) and the motor are connected to the detent pin through electrical signals.

9. The agricultural tillage and land preparation machine according to claim 3, characterized in that: The vertical cross-section of the parallel plate (32) is an isosceles trapezoid.

10. The agricultural tillage and land preparation machine according to claim 2, characterized in that: The fixed block (30) and one side of the rotary tiller body (3) are both provided with a mud scraper.

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