Combined cultivation equipment with preposed subsoiler

Abstract

The combined cultivation equipment comprises a driving operation vehicle, the subsoiler and a rotary cultivator, the subsoiler is arranged at the front end of the driving operation vehicle, the rotary cultivator is located at the rear end of the driving operation vehicle, and the rotary cultivator comprises a rotary blade shaft extending in the width direction of the driving operation vehicle; and a plurality of rotary tillage blades are arranged on the rotary tillage cutter shaft at intervals. The subsoiler comprises a rotation driving mechanism, a subsoiler housing and two subsoiling cutter sets, the two subsoiling cutter sets are arranged on the subsoiler housing in a relative rotation mode, and the subsoiling cutter set away from the driving operation vehicle can be movably adjusted in the length direction relative to the subsoiler housing. The two subsoiling cutter sets can rotate relative to the subsoiler housing and are contained in the subsoiler housing. By the adoption of the front deep scarification and rear rotary tillage cultivation equipment, the deep scarification machine and the rotary tillage machine can be adjusted independently and do not interfere with each other, and the front deep scarification and rear rotary tillage cultivation equipment is easier and more convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field related to agricultural machinery, and in particular to a combined tillage equipment with a subsoiler in front. Background Art

[0002] The tillage machines currently sold in the agricultural machinery market include rotary tillers, deep tillers, etc. A deep tiller is a tillage machine used in conjunction with a high-horsepower tractor. It is mainly used for mechanized tillage between rows or in all directions of deep soil. It has the functions of breaking the plow bottom layer, restoring the soil tillage layer structure, improving the soil's ability to store water and retain moisture, eliminating some weeds, reducing pests and diseases, leveling the surface, and improving the standards of agricultural mechanization operations. Rotary tillage can achieve soil tillage, complete the crushing and deep burial of crop residues and straw, but it is easy to form a hard plow bottom layer under the shallow tillage layer. The plow bottom layer is not conducive to soil water storage and air permeability, and seriously affects the growth and development of crops.

[0003] In recent years, the country has vigorously advocated deep tillage of farmland. The operation of deep tillage machine can break the bottom layer of the plow, but it cannot achieve soil tillage, crushing and deep burial of crop residues and straw. If rotary tillage and deep tillage are operated separately, the number of tractor entering the field will increase, and the operation cost will also increase. The common rotary tillage and deep tillage combined machinery sold on the market now only installs a few chisel-shaped deep tillage shovels on the front and rear beams of the rotary tiller. Since the distance between the deep tillage shovel and the rotary tiller blade of this rotary tillage and deep tillage combined machinery is too close, and the chisel-shaped deep tillage shovel is used, this kind of machinery is prone to operation congestion and low deep tillage rate; some of them arrange the deep tillage machine behind the rotary tiller, and use a rigid connection, so that the front and rear dimensions of the rotary tillage and deep tillage combined machinery are longer, and it is inconvenient for the tractor to hang such a rotary tillage and deep tillage combined machinery to walk.

[0004] For example, a Chinese patent with publication number CN216873769U discloses a soil deep tillage machine, which integrates a deep tiller, a rotary tiller, etc., and can realize rotary tillage and deep tillage, but there are problems of complex structure, long structure size and inconvenient operation. Furthermore, for example, a Chinese patent with publication number CN205510699U also discloses a soil deep tillage and rotary tillage compound machine, which also sets a deep tiller and a rotary tiller together, but the existing structure cannot distribute power to the deep tiller and the rotary tiller, and because the structure and volume of the deep tiller and the rotary tiller are large, they are set at the rear end of the tractor, which affects the normal walking and operation of the tractor, resulting in a large structure at the tail end of the equipment, which places too harsh requirements on the equipment.

[0005] Therefore, the integrated deep tiller and rotary tiller combined equipment in the prior art has the problem that the rear end structure is too large, which makes it inconvenient to use. Summary of the invention

[0006] The purpose of the present invention is to solve the problem in the prior art that the integrated deep tiller and rotary tiller combined equipment has an overly large rear end structure, which causes inconvenience in use.

[0007] In order to solve the above technical problems, the embodiment of the present invention discloses a combined tillage equipment with a subsoiler in front, the combined tillage equipment comprising:

[0008] Drive the work vehicle.

[0009] A deep tiller is arranged at the front end of the driving work vehicle along the length direction of the driving work vehicle, and the deep tiller can rotate relative to the driving work vehicle.

[0010] A rotary tiller is located at the rear end of the driving working vehicle along the length direction of the driving working vehicle. The rotary tiller includes a rotary tiller shaft extending along the width direction of the driving working vehicle, and a plurality of rotary tiller blades are arranged at intervals on the rotary tiller shaft.

[0011] The deep plowing machine includes a rotating drive mechanism, a deep plowing machine cover and two groups of deep plowing knife groups. The two groups of deep plowing knife groups can be relatively rotatably arranged on the deep plowing machine cover and are spaced apart along the length direction, and one group of deep plowing knife groups away from the driving operation vehicle can be moved and adjusted relative to the deep plowing machine cover along the length direction. The rotating drive mechanism is arranged at the front end of the driving operation vehicle and is rotatably connected to one end of the deep plowing machine cover. Each group of deep plowing knife groups includes a plurality of deep plowing blades spaced apart in the width direction, and the plurality of deep plowing blades of two adjacent groups of deep plowing knife groups are staggered in sequence along the width direction, and the two adjacent groups of deep plowing knife groups are configured so that the bottom ends of the deep plowing blades have a height difference.

[0012] The two groups of deep tilling knife sets can rotate relative to the deep tilling machine cover and be stored in the deep tilling machine cover, and the rotation angle of the two groups of deep tilling knife sets relative to the deep tilling machine cover is in the range of 0 to 90 degrees.

[0013] By adopting the above technical solution, after the subsoiler is placed in front, the structure of the rotary tiller at the rear end is simpler and more compact, the subsoiler and the rotary tiller can be adjusted independently without interference, and after the subsoiler is placed in front, the two sets of subsoiler blades can be rotated relative to the subsoiler cover and stored in the subsoiler cover, which is convenient for transportation, storage and use of the subsoiler blades, reduces the space occupied during transportation, and protects the blades from damage. The rotatable connection between the rotation drive mechanism and the subsoiler cover facilitates angle adjustment and storage operations during operation, making it simpler and more convenient to use and more efficient.

[0014] Furthermore, this front and rear arrangement is conducive to power distribution. After the deep loosening machine is placed in front, the soil is first deep loosened by the deep loosening machine during operation, and the two adjacent groups of deep loosening knife groups are configured so that the bottom ends of the deep loosening blades have a height difference. In the forward direction of driving the working vehicle, the deep loosening blades at the front end are higher in height than the deep loosening blades at the rear end. That is to say, the deep loosening blades at the front end loosen and flip the soil shallower, and the deep loosening blades at the rear end loosen and flip the soil deeper, so that soils of different depths and layers can be fully deep loosened. In the process of deep loosening, the two groups of deep loosening knife groups of the deep loosening machine have the deep loosening blades at the front end deep loosen the shallower soil layer first, and the deep loosening blades at the rear end deep loosen the deeper soil layer, which can improve the deep loosening effect of the deep loosening machine, and when deep loosening the soil layer, first loosen the shallow soil, and then loosen the deep soil, which can avoid deep loosening of the deep soil at one time, reduce power consumption, and prevent damage to the deep loosening machine, thereby further extending the service life of the deep loosening machine. The staggered distribution and height difference design of the subsoiler group make subsoil work more labor-saving, saving 15%-45% of power compared with traditional subsoil equipment. The mobility and adjustable angle of the subsoiler group can adapt to different soil types and working conditions (such as straw covering and different tillage depths). The width of the rotary tillage blade shaft is designed to cover the working width of the driving operation vehicle to ensure that no area is missed.

[0015] More importantly, this type of tillage equipment with deep tillage at the front and rotary tillage at the back first breaks the bottom layer of the plow with the deep tiller at the front, enhances the water storage and moisture retention capacity, and improves the soil structure, and then uses the rotary tiller to finely crush and evenly mix the surface layer of the soil. The linkage operation of rotary tillage and deep tillage forms a "loose on top and solid on the bottom" soil structure, which not only ensures the surface layer is soft, but also maintains the water storage capacity of the lower layer.

[0016] An embodiment of the present invention also discloses a combined tillage equipment with a deep loosening machine in front, wherein the two groups of deep loosening knife groups include a first deep loosening knife group and a second deep loosening knife group, the length of the first deep loosening knife group is smaller than the length of the second deep loosening knife group, and in the height direction of the driving working vehicle, the bottom end of the first deep loosening knife group is higher than the bottom end of the second deep loosening knife group.

[0017] The first deep looming knife group includes a first deep looming knife shaft and a plurality of first deep looming blades. The plurality of first deep looming blades are evenly and spacedly arranged along the length direction of the first deep looming knife shaft. The first deep looming knife shaft is rotatably connected relative to the deep looming machine cover shell. The first deep looming knife group can be slidably arranged along the direction of the deep looming machine cover shell. The first deep looming knife group can be switched between a storage state, an unfolded state and an adjustment state relative to the deep looming machine cover shell.

[0018] The second deep looming knife group includes a second deep looming knife shaft and a plurality of second deep looming blades. The plurality of second deep looming blades are evenly and spacedly arranged along the length direction of the second deep looming knife shaft. The second deep looming knife group can be switched between a storage state and an unfolded state relative to the deep looming machine cover.

[0019] Using the above technical solution, the bottom of the first deep loosening knife group is higher, focusing on loosening the shallow soil (such as 0-20cm), reducing damage to the deep soil structure, and forming a surface "loose soil layer" to promote water penetration. The bottom of the second deep loosening knife group is lower, penetrating deep into the soil (such as 20-40cm), breaking the plow bottom layer, forming an underground "water storage channel", and enhancing the soil's water storage capacity. The width-wise staggered distribution and height difference design of the two sets of blades avoid blade interference, while ensuring that deep and shallow soils are processed simultaneously, forming a three-dimensional structure of "loose on top and solid on the bottom". Shallow loosening promotes the lateral expansion of the root system, and deep loosening enhances the root system's ability to penetrate downward, thereby improving the soil's air permeability and water retention as a whole.

[0020] The short blade group processes the shallow layer first, and the long blade group processes the deep layer later, reducing power consumption and can reduce energy consumption by 15%-30%. The sliding and rotating functions enable the blade group to quickly adapt to changes in soil hardness and moisture content, avoiding blade damage caused by "hard collision".

[0021] Another embodiment of the present invention further discloses a combined tillage equipment with a subsoiler in front, wherein the subsoiler cover comprises a first cover plate and a second cover plate formed in one piece, the first cover plate and the second cover plate are in an "L" shape, and a third cover plate is fixedly arranged on both sides of the first cover plate and the second cover plate, and the third cover plate is in a triangular shape; wherein

[0022] The subsoiler cover is also provided with an inclined sliding track, the first subsoiler knife group is slidably arranged on the sliding track, and the second subsoiler knife group is rotatably arranged on the subsoiler cover and is located at one end of the sliding track close to the driving operation vehicle; and

[0023] When the first deep loosening knife group slides relative to the sliding track and moves in a direction away from the second deep loosening knife group, the size difference in the height direction between the bottom end of the first deep loosening knife group and the bottom end of the second deep loosening knife group decreases linearly.

[0024] By adopting the above technical scheme, the "L"-shaped cover plate and the triangular cover plate form a stable frame structure with a storage space inside, and the first deep loosening knife group and the second deep loosening knife group can be stored in the storage space. The first deep loosening knife group adjusts the depth through a sliding track, and the second deep loosening knife group is fixed at the driving end, forming a "sliding + rotation" compound action mode. During the sliding process, the height difference of the bottom end of the knife group increases linearly, realizing deep loosening depth gradient control, adapting to different soil hardnesses, and avoiding sudden changes in resistance caused by single depth operations. In addition, the first deep loosening knife group can slide to adjust its position to adapt to different row spacings or tillage modes without replacing the entire machine structure.

[0025] Further preferably, the shaft ends of the first deep loosening cutter shaft and the second deep loosening cutter shaft are both provided with rotating bearings, and the rotating bearings can be switched between a rotating state and a limited state relative to the deep loosening machine cover.

[0026] A shaft mounting groove is arranged on the deep loosening machine cover, a first limit rib and a second limit rib are arranged on the shaft mounting groove, an integrally formed limit protrusion is provided on the rotating bearing, the limit protrusion can rotate between the first limit rib and the second limit rib, and a torsion spring is arranged in the rotating bearing.

[0027] When the first deep loosening knife group and the second deep loosening knife group are in an expanded state relative to the deep loosening machine cover, the limiting protrusion abuts against the first limiting retaining edge, and the torsion spring is in a compressed state.

[0028] When the first deep loosening knife group and the second deep loosening knife group are in a storage state relative to the deep loosening machine cover, the limiting protrusion abuts against the second limiting retaining edge, and the torsion spring is in a reset state.

[0029] More preferably, the invention further comprises a seeder and a fertilizer applicator, wherein the seeder is located at the rear end of the rotary tiller along the length direction, and the seeder comprises a plurality of seed discharge ports, and the plurality of seed discharge ports are sequentially spaced along the width direction. The fertilizer applicator is located at the rear end of the seeder along the length direction, and the fertilizer applicator comprises a plurality of fertilizer discharge ports, and the plurality of fertilizer discharge ports are sequentially spaced along the width direction.

[0030] When looking toward the deep tiller from its front end along the length direction, multiple deep tilling blades of the deep tiller are aligned with the seed discharge port, and in the length direction, each seed discharge port is aligned with each fertilizer discharge port, and in the height direction of the driving working vehicle, each fertilizer discharge port is located at the lower end of the corresponding seed discharge port.

[0031] Further preferably, in the height direction of the driving working vehicle, the deep loosening height of the first deep loosening knife group in the soil is the first deep loosening height, and the deep loosening height of the second deep loosening knife group is the second deep loosening height. The first deep loosening height is equal to the rotary tillage height of the rotary tiller, the second deep loosening height is greater than the first deep loosening height, the fertilizer discharge height of the fertilizer discharge port is equal to the rotary tillage height, and the seed discharge height of the seed discharge port is less than the fertilizer discharge height.

[0032] With the above technical solution, the fertilizer discharge height of the fertilizer discharge port is equal to the rotary tillage height, and the fertilizer discharge port is located below the seed discharge port. Fertilizer is directly applied to the rotary tillage layer and fully mixed with the soil, which is beneficial to crop root absorption, avoiding volatilization and loss caused by fertilizer application on the surface, improving fertilizer utilization, and the waste below the seeds can increase soil fertility, provide good environmental conditions for crop growth, promote root development, and enhance crop resistance. By setting knife groups with different deep loosening heights and reasonable fertilizer and seed discharge heights, soil stratification deep loosening, precise fertilization and reasonable sowing can be achieved, significantly improving soil structure, increasing crop yield and quality, and reducing production costs.

[0033] From the above, it can be seen that the present application provides a combined tillage equipment with a deep tillage machine in front and an integrated sowing and fertilization device. By placing the deep tillage machine in front and having an adjustable storage function, and placing the rotary tillage machine in the rear and cooperating with the sowing and fertilization device, a reasonable layout of deep tillage and rotary tillage operations is achieved, which has the advantages of compact structure, avoiding operation congestion and improving operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic structural diagram of a subsoiler in an open state of a combined tillage equipment with a subsoiler in front provided by an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of a subsoiler of a combined tillage equipment with a subsoiler in front provided by an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of a subsoiler of a combined tillage equipment with a front subsoiler provided in an embodiment of the present invention, in which a first subsoiler group and a second subsoiler group are accommodated in a subsoiler cover;

[0037] Figure 4 A schematic diagram of upward rotation adjustment of a subsoiler of a combined tillage equipment with a subsoiler in front provided by an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of adjusting a first subsoiler group of a combined tillage equipment in front of a subsoiler provided in an embodiment of the present invention on a subsoiler cover;

[0039] Figure 6 A schematic diagram of one state of a rotating bearing of a combined tillage device in front of a deep tiller provided in an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of another state of a rotary bearing of a combined tillage device provided in front of a subsoiler according to an embodiment of the present invention;

[0041] Figure 8 A schematic diagram of the partial structure of a seed meter of a combined tillage equipment provided in front of a deep tiller according to an embodiment of the present invention;

[0042] Fig. 9 A schematic diagram of the working depth of a combined tillage device with a deep tiller in front provided in an embodiment of the present invention.

[0043] Description of reference numerals:

[0044] 100. Driving work vehicles;

[0045] 110. mounting seat; 120. hydraulic cylinder;

[0046] 200, deep tiller;

[0047] 210. Subsoiler cover;

[0048] 211, first cover plate; 212, second cover plate; 213, third cover plate; 214, sliding track; 215, adjustment slot; 216, first rotating connection part; 217, second rotating connection part;

[0049] 220, first deep loosening knife set; 221, first deep loosening blade; 222, first knife handle; 223, first shovel tip; 224, matching groove; 230, second deep loosening knife set; 231, second deep loosening blade;

[0050] 240, rotating bearing;

[0051] 241, shaft mounting groove; 242, first limiting rib; 243, second limiting rib; 244, limiting protrusion; 245, torsion spring;

[0052] 300, rotary tiller; 310, rotary tiller blade;

[0053] 400, seed drill;

[0054] 410, seed storage cabin; 420, seed discharging port; 430, seed discharging device; 440, seed discharging turntable; 450, seed discharging trough; 460, seed discharging tube; 470, seed scraping unit;

[0055] 500, fertilizer spreader; 510, fertilizer storage compartment; 520, fertilizer discharge port;

[0056] 600, leveling roller;

[0057] H1, first deep tillage height; H2, second deep tillage height; H3, rotary tillage height; H4, seed discharge height; H5, fertilizer discharge height; L1, length distance of driving working vehicle; A, length direction of driving working vehicle; B, height direction of driving working vehicle. DETAILED DESCRIPTION

[0058] A subsoiler is an agricultural machine used for deep soil loosening. Its core principle is to loosen the soil deeply through mechanical devices, break the plow bottom layer, improve soil structure, enhance soil permeability and water storage capacity, and create a good soil environment for crop growth. However, it cannot achieve soil tillage, crushing and deep burial of crop residues and straw. In addition, the flatness of the soil layer treated by the subsoiler is poor and not conducive to farming. Generally, it is necessary to rotary till the soil after deep loosening before planting crops. This method of deep loosening first and then rotary tillage has a long operation cycle, requires repeated work of the tractor, and has high operating costs.

[0059] With the development of technology, some machines that work together with subsoilers and rotary tillers have also appeared in the prior art. However, this common machine generally simply fixes the subsoiler and rotary tiller together, and then installs them to the rear end of the tractor in the same way as the rotary tiller is installed and works. However, there are many problems with this structure in actual work. First, the subsoiler and rotary tiller are very large in size after being fixed together, and on the one hand, they need to be lengthened to avoid interference between the subsoiler and rotary tiller when placed at the rear end of the tractor, which will also affect the walking and working of the subsoiler and rotary tiller. Furthermore, after the subsoiler and rotary tiller are fixed to the rear end of the tractor together, there is no way to adjust the subsoiler and rotary tiller. On the other hand, because the distance between the deep tilling shovel of the deep tiller and the rotary tiller of the rotary tiller is too close, it is easy to cause congestion and low deep tillage rate. In addition, the horsepower parameters of the deep tiller and the rotary tiller are inconsistent. The horsepower parameter required by the deep tiller is greater than the horsepower parameter of the rotary tiller. When they are set together to meet the horsepower parameter of the deep tiller, the rotary tiller blade of the rotary tiller will till the soil deeper, which will affect the flatness of the land after rotary tillage and increase the risk of breakage and damage of the rotary tiller blade. However, when it is further set to meet the horsepower parameter of the rotary tiller, the horsepower is too small to drive the deep tiller to perform soil deep tillage.

[0060] Therefore, the combined machine in the prior art that integrates a rotary tiller and a deep tiller and is arranged at the rear end of a tractor has many problems and pain points that are difficult to solve during actual use. It is also difficult to promote and use in large-scale agricultural production and practical applications, and there is a problem of inconvenience in use.

[0061] In order to solve the above technical problems, the present application discloses a combined tillage equipment with a deep loosening machine in front, in which the deep loosening machine is arranged at the front end of a driving working vehicle, that is, the deep loosening machine and the rotary tiller are integrated into the same driving working vehicle, but the deep loosening machine is installed in front of the driving working vehicle, and the rotary tiller is installed at the rear end of the driving working vehicle. The deep loosening machine and the rotary tiller can adjust their work independently without interference, and when working, the soil is first deep loosened by the deep loosening machine, and then rotary tilled by the rotary tiller, forming a soil structure of "loose on top and solid on the bottom", which not only ensures that the surface layer is loose, but also maintains the water storage capacity of the lower layer, but also solves the problem of inconvenience in use when the rotary tiller and the deep loosening machine are both installed at the rear end of a tractor.

[0062] The combined tillage equipment with a subsoiler in front disclosed in this application is described in detail below:

[0063] The embodiment of the present invention discloses a combined tillage device with a subsoiler in front, see Figure 1The combined tillage equipment includes a driving vehicle 100, a subsoiler 200, a rotary tiller 300, a seed drill 400 and a fertilizer applicator 500. The subsoiler 200 is arranged at the front end of the driving vehicle 100 along the length direction of the driving vehicle 100. The subsoiler 200 can rotate relative to the driving vehicle 100. The seed drill 400 and the fertilizer applicator 500 are located at the rear end of the rotary tiller 300. Figure 1 As shown in the direction A, the height direction of the driving working vehicle 100 is as shown in Figure 1 As shown in the B direction.

[0064] The rotary tiller 300 is located at the rear end of the driving work vehicle 100 along the length direction A of the driving work vehicle 100. The rotary tiller 300 includes a rotary tiller shaft extending along the width direction of the driving work vehicle 100, and a plurality of rotary tiller blades 310 are arranged at intervals on the rotary tiller shaft.

[0065] See also Figure 1 and Figure 2 The deep plowing machine 200 includes a rotating drive mechanism, a deep plowing machine cover 210 and two groups of deep plowing knife groups. The two groups of deep plowing knife groups can be relatively rotatably arranged on the deep plowing machine cover 210 and are spaced apart along the length direction, and one group of deep plowing knife groups away from the driving operation vehicle 100 can be movable and adjusted relative to the deep plowing machine cover 210 along the length direction. The rotating drive mechanism is arranged at the front end of the driving operation vehicle 100 and is rotatably connected to one end of the deep plowing machine cover 210. Each group of deep plowing knife groups includes a plurality of deep plowing blades spaced apart in the width direction, and the plurality of deep plowing blades of two adjacent groups of deep plowing knife groups are staggered in sequence along the width direction, and the two adjacent groups of deep plowing knife groups are configured so that the bottom ends of the deep plowing blades have a height difference.

[0066] The two groups of deep tilling knife groups can rotate relative to the deep tilling machine housing 210 and be stored in the deep tilling machine housing 210, and the rotation angle of the two groups of deep tilling knife groups relative to the deep tilling machine housing 210 is in the range of 0 to 90 degrees.

[0067] Specifically, in this embodiment, the driving operation vehicle 100 refers to a traction device with power output and walking functions, such as a wheeled tractor or a crawler tractor, and its front end is provided with a suspension system or a rotation drive mechanism for connecting and installing the subsoiler 200. The rotation drive mechanism refers to a rotating device connecting the vehicle and the subsoiler 200, and the hydraulic cylinder 120 can be used to drive the articulated structure so that the subsoiler 200 can be adjusted in pitch angle around the connection point. Figure 2 The staggered distribution of deep loosening blade groups refers to the positions of blades in adjacent blade groups being staggered in the width direction, forming staggered tillage tracks. The height difference adjustment refers to forming a stepped tillage depth by changing the vertical position relationship of the two blade groups. The distal blade group realizes longitudinal displacement adjustment through the sliding track 214, thereby changing the difference in the depth of the two blade groups into the soil.

[0068] See also Figure 1 The front end of the driving vehicle 100 is connected to the deep tiller housing 210 through a rotating drive mechanism. During deep tilling, the two blade groups are deployed to form a front-to-back staggered layout. After the distal blade group moves along the sliding track 214, the depth of the two blades in the soil forms a step difference. The front blade group performs shallow tilling, and the rear blade group performs deep tillage. The rotary tiller 300 crushes and levels the soil after deep tillage at the rear end of the vehicle. The staggered distribution of its rotary tillage blade 310 and the deep tillage blade prevents the tillage track from overlapping. See further Figure 3 When not in operation, the two sets of deep loosening knife groups can be rotated upward and stored inside the cover. The storage of the deep loosening knife groups increases the height of the deep loosening blades from the ground during equipment transportation, preventing unnecessary scratches from reducing the service life of the deep loosening knife groups. Figure 4 , the rotating drive mechanism enables the subsoiler 200 to be adjusted to form a specific angle with the ground, which can ensure the tillage depth and avoid collision with obstacles. Figure 1 This is a schematic diagram of the deep tiller 200 at the front end of the driving working vehicle 100 being lowered and performing deep tillage. Figure 3 This is a schematic diagram of a subsoiler 200 at the front end of a driving working vehicle 100, in which a subsoiler blade is stored in a subsoiler housing 210. Figure 4 This is a schematic diagram showing a rotation drive mechanism at the front end of the working vehicle 100 driving the deep tiller 200 to rotate upward to increase the angle between the deep tiller 200 and the ground.

[0069] It should be noted that in Figure 1 In the state shown, the deep plowing blade of the deep plowing machine 200 is in a vertical state, and the rotation drive mechanism can also drive the deep plowing machine cover 210 to rotate relative to the ground. Figure 4 In the state shown, the deep tiller cover 210 can also be driven to rotate and adjust relative to the ground, and the rotation adjustment angle can be any value in the range of 0 to 60°, such as 20°, 45°, 60°, etc. This embodiment does not make any specific limitation on this.

[0070] More specifically, in the present embodiment, the rotation angles of the two groups of deep plowing knife groups relative to the deep plowing machine cover 210 can be 30°, 60°, 75°, 90°, etc. Preferably, the rotation angle is set within the range of 75° to 90°, for example, 75°, 80°, which can satisfy the requirements of the deep plowing knife groups being rotated open relative to the deep plowing machine cover 210, and can also satisfy the requirements of the deep plowing knife groups being rotated and stored relative to the deep plowing machine cover 210.

[0071] In the present application, the deep tiller 200 is rotatably connected to the front end of the driving operation vehicle 100 through a rotating drive mechanism, so that the deep tiller 200 can adjust the angle during operation to reduce the impact on the vehicle's movement. The two groups of deep tilling knife groups are arranged at intervals along the length direction and can be movably adjusted. By changing the spacing and height difference, the congestion problem caused by soil accumulation during deep tillage is avoided. The design of the staggered distribution of the deep tillage blades in the width direction enhances the uniformity of soil crushing. The deep tillage knife group can be stored in the structure inside the cover, which is convenient for transportation and storage in a non-operating state. The setting of the blades of the rotary tiller 300 extending in the width direction forms a synergistic effect with the staggered blades of the front deep tiller 200, realizing the refined rotary tillage treatment of the soil after deep tillage. At the same time, through the front and rear power separation layout, the deep tiller 200 and the rotary tiller 300 can independently allocate driving force according to their respective operation needs to avoid power parameter conflicts.

[0072] After the deep tiller 200 is further placed in front, the structure of the rotary tiller 300 at the rear end is simpler and more compact, and the deep tiller 200 and the rotary tiller 300 can be adjusted independently without interference. This front and rear arrangement is conducive to power distribution. After the deep tiller 200 is placed in front, the soil is firstly deep tilled by the deep tiller 200 during operation, and the two adjacent groups of deep tilling knife groups are configured so that the bottom ends of the deep tilling blades have a height difference. In the forward direction of the driving operation vehicle 100, the deep tilling blades at the front end are higher in height than the deep tilling blades at the rear end, that is, the deep tilling blades at the front end are more sparse. The loosened and turned soil is shallower, and the deep loosening blades at the rear end loosen and turned soil deeper, so that soils of different depths and different layers can be fully deep loosened. Moreover, during the deep loosening operation, the two groups of deep loosening blades of the deep loosening machine 200 first deep loosen the shallower soil layer, and then the deep loosening blades at the rear end deep loosen the deeper soil layer, which can improve the deep loosening effect of the deep loosening machine 200. When deep loosening the soil layer, the shallow soil is loosened first, and then the deep soil is loosened, which can avoid deep loosening of deeper soil at one time, reduce power consumption, prevent damage to the deep loosening machine 200, and further extend the service life of the deep loosening machine 200.

[0073] In addition, two sets of deep tillage knife groups can be set up for secondary deep tillage, with different depths for the two deep tillages, which improves soil permeability, enhances water storage and moisture retention capacity, and reduces power consumption. The staggered distribution and height difference design of the deep tillage knife group make deep tillage operations more labor-saving, saving 15%-45% of power compared to traditional deep tillage equipment. The mobility and adjustable angle of the deep tillage knife group enable it to adapt to different soil types (such as loam, clay) and operating conditions (such as straw covering, different tillage depths). The width design of the rotary tillage knife shaft can cover the operating width of the driving operation vehicle 100, ensuring that there is no missed tillage area.

[0074] Furthermore, the two sets of subsoiler blades can be rotated relative to the subsoiler housing 210 and stored in the subsoiler housing 210, which is convenient for transportation, storage and use of the subsoiler blades, reduces the space occupied during transportation, and protects the blades from damage. The rotatable connection between the rotation drive mechanism and the subsoiler housing 210 facilitates angle adjustment and storage operations during operation.

[0075] More importantly, this front-end deep tillage and rear-end rotary tillage farming equipment first breaks the plow bottom layer with the front-end deep tiller 200 to enhance the water storage and moisture retention capacity and improve the soil structure, and then finely breaks and evenly mixes the soil surface with the rotary tiller 300. The linkage operation of rotary tillage and deep tillage forms a "loose on top and solid on the bottom" soil structure, which not only ensures the surface layer is soft, but also maintains the water storage capacity of the lower layer.

[0076] Compared with the prior art, the distance between the deep loosening blade and the rotary tiller in the traditional rear-mounted combined equipment is less than 10 cm, and the device composed of the deep loosening machine 200 and the rotary tiller 300 is relatively large. In the present application, after the deep loosening machine 200 is placed in front, the length of the deep loosening blade and the rotary tiller is greater than or equal to the length of the driving operation vehicle 100, and the deep loosening machine 200 and the rotary tiller 300 can be adjusted independently to avoid soil blockage and the like. The two groups of deep loosening blades with staggered distribution greatly improve the uniformity of soil crushing, and this front and rear setting method can ensure that the deep loosening machine 200 obtains stable power distribution and the power distribution obtained is greater than the power distribution of the rotary tiller 300, so that the combined farming equipment can achieve better deep loosening and rotary tillage.

[0077] It should be noted that in the prior art, along the forward direction of the driving working vehicle 100, the rotary tiller 300 needs to be arranged behind the driving working vehicle 100, because the rotary tiller 300 needs to finely crush, till and level the soil. If it is arranged at the front end, the surface layer of the soil after fine tillage will be damaged by the wheels of the driving working vehicle 100. Therefore, the subsoiler 200 in the prior art is also arranged behind the driving working vehicle 100 to improve the soil subsoiling effect of the subsoiler 200. However, in the present application, because the deep tiller 200 loosens the deep soil, and the rotary tiller 300 will be used for fine tillage after loosening the deep soil, it is found in the actual use test that after the deep tiller 200 is set at the front end for deep tillage, the wheels of the driving work vehicle 100 will not cause compaction damage to the deep soil after deep tillage, and a small part of the compacted surface soil (only occupying the wheel width) will be finely tilled by the rotary tiller 300 at the rear end, which will not affect the soil layer and soil after deep tillage and rotary tillage. Therefore, in the present application, the deep tiller 200 is creatively set at the front end of the driving work vehicle 100.

[0078] The implementation method of this embodiment further discloses a combined tillage equipment with a subsoiler in front, see Figure 1 and Figure 2 The two groups of deep looming knife groups include a first deep looming knife group 220 and a second deep looming knife group 230. The length of the first deep looming knife group 220 is smaller than the length of the second deep looming knife group 230. In the height direction of the driving work vehicle 100, the bottom end of the first deep looming knife group 220 is higher than the bottom end of the second deep looming knife group 230.

[0079] The first deep looming knife group 220 includes a first deep looming knife shaft and a plurality of first deep looming blades 221. The plurality of first deep looming blades 221 are evenly and spacedly arranged along the length direction of the first deep looming knife shaft. The first deep looming knife shaft is rotatably connected relative to the deep looming machine cover shell 210. The first deep looming knife group 220 can be slidably arranged along the direction of the deep looming machine cover shell 210. The first deep looming knife group 220 can be switched between a storage state, an unfolded state and an adjustment state relative to the deep looming machine cover shell 210.

[0080] The second deep looming knife group 230 includes a second deep looming knife shaft and a plurality of second deep looming blades 231. The plurality of second deep looming blades 231 are evenly and spacedly arranged along the length direction of the second deep looming knife shaft. The second deep looming knife group 230 can be switched between a storage state and an expanded state relative to the deep looming machine cover shell 210.

[0081] Among them, the length of the first deep loosening knife group 220 is smaller than the length of the second deep loosening knife group 230, which means that there is a difference in the longitudinal extension dimensions of the two groups of blades. Specifically, this can be achieved by using a combination of a knife shaft and blades of different lengths, so that the first deep loosening knife group 220 forms shallow loosening of the soil during operation, and the second deep loosening knife group 230 realizes deep loosening of the soil. For example, the operating depth of the first deep loosening knife group 220 to the soil can be in the range of 15 to 30 cm, and the operating depth of the second deep loosening knife group 230 to the soil can be in the range of 25 to 50 cm. The bottom end of the first deep loosening knife group 220 is higher than the bottom end of the second deep loosening knife group 230, which means that the two groups of blades have a position difference in the vertical direction, forming a stepped loosening structure. This arrangement can also achieve the power distribution of the deep loosening machine 200. The shallower blades at the front end are subject to less resistance and sufficient power, while the deeper blades at the rear end are subject to greater resistance. However, some shallow soil has been loosened, so the resistance it encounters is also reduced. The power to drive the working vehicle 100 fully meets the power demand and distribution of the deep loosening machine 200.

[0082] Specifically, in this embodiment, the number of the first deep loosening blades 221 and the second deep loosening blades 231 can be set according to actual needs. Specifically, the longer the lengths of the first deep loosening knife shaft and the second deep loosening knife shaft are, the more the number of the first deep loosening blades 221 and the second deep loosening blades 231 is, and the first deep loosening blades 221 and the second deep loosening blades 231 are staggered and distributed at intervals, for example, see Figure 2The first deep looming knife group 220 includes 4 deep looming blades, and the second deep looming knife group 230 includes 5 deep looming blades. The 4 first deep looming blades 221 are just located in the adjacent intervals of the 5 second deep looming blades 231, and the length of the first deep looming blade 221 is smaller than the length of the second deep looming blade 231. The interval between the first deep looming blade 221 and the second deep looming blade 231 can be adjusted and designed according to actual needs, and this embodiment does not make any specific limitation on this.

[0083] The slidable setting of the first deep loosening knife group 220 means that the first deep loosening knife shaft can move in a track or a slide groove. Specifically, a cover structure with a sliding track 214 can be used in conjunction with a positioning pin to achieve position adjustment to adapt to the operation requirements of different soil hardness. Preferably, a mechanical adjustment method is adopted in this application. The advantages of adopting this mechanical adjustment method are higher stability and connection strength and longer service life. The switching of the storage state, the unfolded state and the adjustment state of the first deep loosening knife group 220 means that the knife group changes its working position by rotation or translation. Specifically, it can be achieved by a rotating shaft hinged with a limiting mechanism, which is convenient for folding and storage during transportation, and unfolding and adjustment during operation.

[0084] It should be noted that those skilled in the art may also use other structures to realize the slidable adjustment of the first deep loosening knife group 220, and this embodiment does not specifically limit this. When the equipment enters the working area, the first deep loosening knife group 220 switches from the storage state to the unfolded state, and forms a preset depth difference with the second deep loosening knife group 230 through sliding adjustment. The first deep loosening blade 221 first crushes the surface soil with a shorter blade body, and the second deep loosening blade 231 then penetrates into the plow bottom layer with a longer blade body to complete deep loosening. The two sets of blades are staggered in the horizontal direction to avoid the overlap of the loosening track and cause increased resistance. When encountering a hard soil layer, the first deep loosening knife group 220 moves backward along the sliding track 214, increasing the height difference with the second deep loosening knife group 230, and reducing the operating load by layered loosening. In the non-operating state, the first deep loosening knife group 220 can slide to an overlapping position with the second deep loosening knife group 230, and the two sets of blades rotate synchronously to the inside of the cover, significantly reducing the lateral size of the equipment.

[0085] This application solves the problem of low soil crushing efficiency and high equipment power consumption caused by the single blade group structure during deep tillage operation, and avoids soil congestion caused by the close distance between the deep tillage shovel and the rotary tillage blade. The adjustable blade group design enables the equipment to dynamically adjust the loosening parameters according to the actual working conditions, improving the adaptability to different soil types. The switching function of the storage state effectively reduces the space occupied by the equipment in the non-working state, and improves the road passability and storage convenience of the combined operation equipment.

[0086] By setting the first deep loosening blade group 220 and the second deep loosening blade group 230 of different lengths, and limiting the bottom end of the first deep loosening blade group 220 to be higher than the bottom end of the second deep loosening blade group 230, the two blade groups form a stepped deep loosening structure. The shorter first deep loosening blade group 220 first performs shallow soil loosening operations, and the longer second deep loosening blade group 230 then performs deep soil loosening operations, which not only avoids congestion caused by the close distance between the deep loosening shovel and the rotary tillage blade, but also improves the deep loosening efficiency through layered operations. The slidable and adjustable design of the first deep loosening blade group 220 allows the spacing and depth difference between the two blade groups to be adjusted according to soil conditions, thereby enhancing the adaptability of the equipment; its storage, expansion and adjustment state switching functions not only facilitate the reduction of the equipment volume when not in operation, but also flexibly match different deep loosening requirements during operation. The storage and expansion switching of the second deep loosening blade group 230 further optimizes the spatial layout of the equipment and reduces structural interference during travel. The evenly spaced arrangement of the two blade groups ensures uniform coverage of the deep loosening operation, and the staggered distribution avoids repeated operation areas and improves the soil crushing effect. The rotatable connection of the first deep plowing cutter shaft is combined with the sliding adjustment to achieve dual adjustment of the angle and position of the cutter group, solving the problem of the single operating mode caused by the fixed deep plowing shovel in traditional equipment.

[0087] With the above technical solution, the first deep loosening knife group 220 has a higher bottom end, focusing on loosening the shallow soil (such as 0-20cm), reducing damage to the deep soil structure, and forming a surface "loose soil layer" to promote water penetration. The second deep loosening knife group 230 has a lower bottom end, penetrating deep into the soil (such as 20-40cm), breaking the plow bottom layer, forming an underground "water storage channel", and enhancing the soil's water storage capacity. The width-wise staggered distribution and height difference design of the two sets of blades avoid blade interference, while ensuring that the deep and shallow soils are processed simultaneously, forming a three-dimensional structure of "loose on top and solid on the bottom". Shallow loosening promotes the lateral expansion of the root system, and deep loosening enhances the root system's ability to penetrate downward, thereby improving the soil's air permeability and water retention as a whole.

[0088] The short blade group processes the shallow layer first, and the long blade group processes the deep layer later, reducing power consumption and can reduce energy consumption by 15%-30%. The sliding and rotating functions enable the blade group to quickly adapt to changes in soil hardness and moisture content, avoiding blade damage caused by "hard collision".

[0089] Another embodiment of the present invention also discloses a combined tillage equipment with a subsoiler in front, wherein the subsoiler housing 210 includes an integrally formed first cover plate 211 and a second cover plate 212, the first cover plate 211 and the second cover plate 212 are in an "L" shape, and a third cover plate 213 is fixedly arranged on both sides of the first cover plate 211 and the second cover plate 212, and the third cover plate 213 is in a triangular shape. The subsoiler housing 210 also has an inclined sliding track 214, the first subsoiler knife group 220 is slidably arranged on the sliding track 214, and the second subsoiler knife group 230 is rotatably arranged on the subsoiler housing 210 and is located at one end of the sliding track 214 close to the driving operation vehicle 100. Moreover, when the first subsoiler knife group 220 slides relative to the sliding track 214 and moves in a direction away from the second subsoiler knife group 230, the size difference between the bottom end of the first subsoiler knife group 220 and the bottom end of the second subsoiler knife group 230 in the height direction decreases linearly.

[0090] See also Figure 1 and Figure 5 The sliding track 214 is inclined on the deep loosening machine housing 210, and its inclination angle can be adjusted according to actual needs. For example, when the height difference of the sliding track 214 is 10 cm, when the first deep loosening knife group 220 is adjusted on the sliding track 214, the adjustment height of the bottom end of the first deep loosening knife group 220 is within the range of 10 cm. Please refer to Figure 5 When the first deep looming knife group 220 moves toward the front end on the sliding track 214, the farther the distance between the first deep looming knife group 220 and the second deep looming knife group 230 is, the deeper the loosening depth into the soil is, and the distance between the first deep looming knife group 220 and the second deep looming knife group 230 is inversely proportional to the size difference between the bottom end of the first deep looming knife group 220 and the bottom end of the second deep looming knife group 230. The farther the distance between the first deep looming knife group 220 and the second deep looming knife group 230 is, the smaller the size difference in the height direction between the bottom end of the first deep looming knife group 220 and the bottom end of the second deep looming knife group 230 is.

[0091] For example, when the height difference of the sliding track 214 is 10 cm and the length of the sliding track 214 is 60 cm, the loosening depth of the bottom end of the first deep loosening knife group 220 increases by 1 cm for every 6 cm adjustment of the first deep loosening knife group 220 along the sliding track 214, and the size difference in height direction between the bottom end of the first deep loosening knife group 220 and the bottom end of the second deep loosening knife group 230 decreases by 1 cm. It should be noted that those skilled in the art can also make adjustments and designs according to actual needs, such as adjusting the length, inclination angle, height difference, etc. of the sliding track 214, and this embodiment does not make specific restrictions on this. It should be noted that the first deep loosening knife group 220 is rigidly connected after being adjusted and fixed, and can be fixed and limited in a vertical state after opening.

[0092] Specifically, when the first deep loosening knife group 220 moves outward along the inclined sliding track 214, its installation position gradually decreases in the vertical direction due to the effect of the inclination angle of the track. At the same time, the position of the second deep loosening knife group 230 remains fixed, causing the height difference between the bottom ends of the two to gradually decrease as the sliding distance increases. The triangular structure of the third cover plate 213 provides an escape space when the knife groups are stored, so that the two knife groups can be completely stored inside the cover. The adjustment slot 215 on the sliding track 214 cooperates with the fixed pin shaft. For example, a plurality of equally spaced positioning holes can be set, and the fixation of different positions can be achieved by inserting the pin shaft, thereby accurately controlling the height difference value.

[0093] The present application combines an L-shaped integrated cover with a triangular side panel to reduce the number of parts while improving the structural strength and optimizing the knife group storage space. In the prior art, the knife group height adjustment usually relies on manually adding or removing gaskets or replacing fixed points, and continuous adjustment cannot be achieved. The inclined sliding track design of the present application converts horizontal displacement into height change through geometric relationships, making the adjustment operation simpler and more accurate.

[0094] With this structural design, the "L"-shaped cover plate and the triangular cover plate form a stable frame structure, which has higher stability and has a storage space inside. The first deep loosening knife group 220 and the second deep loosening knife group 230 can be stored in the storage space. The first deep loosening knife group 220 adjusts the depth through the sliding track 214, and the second deep loosening knife group 230 is fixed at the driving end, forming a "sliding + rotation" compound action mode. During the sliding process, the height difference of the bottom end of the knife group increases linearly, realizing deep loosening depth gradient control, adapting to different soil hardnesses, and avoiding sudden changes in resistance caused by single depth operations. In addition, the first deep loosening knife group 220 can slide to adjust its position to adapt to different row spacings or tillage modes without replacing the entire machine structure.

[0095] An embodiment of the present invention also discloses a combined tillage equipment with a deep plowing machine in front. The bottom end of the deep plowing machine cover 210 is set to be open, and the sliding track 214 includes a "U"-shaped groove (not shown in the figure), and the first deep plowing knife shaft is slidably arranged in the sliding track 214.

[0096] A plurality of adjustment slots 215 are evenly and spaced apart on the sliding track 214 . The shaft end of the first deep loosening cutter shaft has a matching slot 224 adapted to the adjustment slot 215 , and also includes a fixing pin shaft, which can pass through the adjustment slot 215 and the matching slot 224 , and fix the first deep loosening cutter shaft relative to the sliding track 214 .

[0097] The U-shaped groove refers to a groove structure with an open side, which can be formed by bending a steel plate. The open structure allows the knife shaft to maintain the contact area during the sliding process to avoid falling off the track. The adjustment groove 215 refers to positioning holes distributed at equal intervals along the length direction of the sliding track 214, which can be achieved by drilling or stamping, and provide multiple adjustable fixed positions through interval distribution. The matching groove 224 refers to a groove arranged at the end of the knife shaft, which can match the shape of the adjustment groove 215, such as a circular or square structure, which is used to form a through hole after alignment with the adjustment groove 215. The fixed pin refers to a rigid connector that can be inserted into the adjustment groove 215 and the matching groove 224, which can be a stud, and the mechanical locking of the knife shaft and the track is achieved through the through hole.

[0098] With this structural design, the opening structure at the bottom of the deep tiller cover 210 facilitates observation of the position of the cutter shaft in the sliding track 214. At the same time, the side wall of the U-shaped groove forms a wrapping constraint on the cutter shaft to prevent it from being laterally offset or dislodged due to force during operation. The multiple adjustment grooves 215 distributed on the surface of the sliding track 214 form a positioning point with the matching groove 224 at the end of the cutter shaft. When the cutter shaft moves to the target position, the adjustment groove 215 is aligned with the hole position of the matching groove 224. At this time, the insertion of the fixed pin can limit the axial displacement and circumferential rotation of the cutter shaft. Since the adjustment grooves 215 are evenly spaced, the adjustment step length of the cutter shaft has quantitative accuracy. For example, the spacing can be 5 cm or 10 cm, and the operator can quickly position it according to actual needs. The fixed pin and the hole position adopt interference fit or thread locking to ensure that it will not loosen when subjected to longitudinal loads during deep tillage operations, and the structural stability is higher.

[0099] Further preferably, the shaft ends of the first deep loosening cutter shaft and the second deep loosening cutter shaft are both provided with a rotating bearing 240, and the rotating bearing 240 can switch between a rotating state and a limited state relative to the deep loosening machine housing 210. Further, in order to ensure that the first deep loosening cutter shaft can be adjusted and rotated, when the rotating bearing 240 is provided, the rotating bearing 240 is staggered between the shaft end of the first deep loosening cutter shaft and the matching groove 224, for example, the rotating bearing 240 is provided on the side of the first deep loosening cutter shaft provided with the matching groove 224, through the design of this structure, the first deep loosening cutter shaft can slide relative to the sliding track 214, and after sliding and fixing, the first deep loosening cutter group 220 can also rotate through the rotating bearing 240. Those skilled in the art can also set the first deep loosening cutter shaft to other connecting structures that can slide and rotate according to actual needs, for example, a sliding block is provided at the shaft end of the first deep loosening cutter shaft, and the sliding block and the shaft end are connected through the rotating bearing 240, and the sliding block is provided with a matching groove 224, which is not limited to the present embodiment.

[0100] More specifically, a shaft mounting groove 241 is provided on the subsoiler housing 210, see Figure 6 and Figure 7 A first limiting rib 242 and a second limiting rib 243 are provided on the rotating shaft mounting groove 241 , and an integrally formed limiting protrusion 244 is provided on the rotating bearing 240 . The limiting protrusion 244 can rotate between the first limiting rib 242 and the second limiting rib 243 , and a torsion spring 245 is provided in the rotating bearing 240 .

[0101] When the first deep loosening knife group 220 and the second deep loosening knife group 230 are in an unfolded state relative to the deep loosening machine housing 210, see Figure 6 , the limiting protrusion 244 abuts against the first limiting rib 242, and the torsion spring 245 is in a compressed state. Figure 7 When the first deep loosening knife group 220 and the second deep loosening knife group 230 are in the storage state relative to the deep loosening machine housing 210, the limiting protrusion 244 and the second limiting rib 243 are in abutment, and the torsion spring 245 is in a reset state. With the rotating bearing 240 of this structure, when the first deep loosening knife group 220 and the second deep loosening knife group 230 are in the expanded state, i.e., the working state relative to the deep loosening machine housing 210, the limiting protrusion 244 and the first limiting rib 242 are in rigid abutment, so it has high rigidity and structural strength. It should be noted that those skilled in the art can adjust the structure and size of the limiting protrusion 244 according to actual needs, and this embodiment does not specifically limit this.

[0102] The rotating bearing 240 refers to a mechanical component that supports the rotation of the knife shaft, which can be realized by a ball bearing or a sliding bearing. Its inner ring is interference fit with the knife shaft, and its outer ring is in contact with the deep loosening machine housing 210, which is used to reduce the friction resistance when the knife group rotates. The rotating shaft installation groove 241 refers to a groove structure set on the machine housing, which can be formed by casting or welding process, and its two sides are provided with limit ribs perpendicular to the groove wall, which are used to limit the rotation angle range of the rotating bearing 240. The limiting protrusion 244 refers to a protrusion structure integrally formed with the rotating bearing 240, which can be formed by casting or machining, and its width is slightly smaller than the gap between the first limiting rib 242 and the second limiting rib 243, which is used to contact with the rib to form a physical limit when rotating. The torsion spring 245 refers to an energy storage element with a spiral elastic body, which can be wound by spring steel wire, and its two ends are respectively fixed on the inner ring of the bearing and the rotating shaft installation groove 241, which is used to accumulate elastic force to maintain a stable state when the knife group is unfolded.

[0103] Specifically, in the unfolded operation state, the first deep loosening knife group 220 is driven by an external force to rotate around the axis, and the limiting protrusion 244 rotates along the rotating shaft mounting groove 241 until it contacts the first limiting rib 242. At this time, the torsion spring 245 is compressed due to the rotation of the knife shaft, and the reverse torque generated by it continuously presses the limiting protrusion 244 and the rib to form a stable unfolding lock. When the first deep loosening knife group 220 and the second deep loosening knife group 230 need to be stored, the external force drives the knife shaft to rotate in the opposite direction, the limiting protrusion 244 disengages from the first limiting rib 242 and drives the torsion spring 245 to reset until the knife shaft is completely stored in the deep loosening machine cover 210. In this process, the reset force of the torsion spring 245 eliminates residual stress, avoiding accidental displacement of the knife group due to elastic deformation in the stored state. Furthermore, in order to ensure that the first deep looming knife group 220 and the second deep looming knife group 230 can be stably stored inside the deep looming machine cover shell 210, a slot structure or other snap-on fixing structure can be further provided inside the deep looming machine cover shell 210, and the first deep looming knife group 220 and the second deep looming knife group 230 are snap-connected inside the deep looming machine cover shell 210.

[0104] Through the above technical solution, the present application effectively prevents the accidental rotation of the knife group due to mechanical vibration during deep tillage operations, and simplifies the operation steps of switching the knife group status. In the unfolded state, the pressure continuously applied by the torsion spring 245 can compensate for the mechanical gap and maintain the stability of the blade's depth into the soil; in the retracted state, the reset function of the torsion spring 245 eliminates the cumbersome operation of the traditional locking device that needs to be manually released, thereby improving the safety and reliability of the equipment during transportation. The structure also reduces the number of parts and the risk of knife group deviation due to loose connections through the integrated limiting protrusion 244 and the retaining edge, thereby extending the service life of the equipment.

[0105] Further preferably, each first deep loosening blade 221 includes an integrally formed first handle 222 and a first shovel tip 223, the first handle 222 includes a vertical portion and a curved portion, the first shovel tip 223 is located at the end of the curved portion, and a plurality of wing-shaped shovels (not shown in the figure) are also arranged at intervals on both sides of the first handle 222.

[0106] Each second deep plowing blade 231 includes a second handle and a second shovel tip; the length of the second handle is greater than the length of the first handle 222. Further preferably, a mounting seat 110 is provided at the front end of the driving operation vehicle 100, and a first rotating connection part 216 and a second rotating connection part 217 are installed on the deep plowing machine cover 210.

[0107] Among them, the vertical part refers to the part of the handle that extends perpendicular to the ground, which can be formed by welding steel bars with rectangular cross-sections, and is used to provide vertical support strength when cutting into the soil. The curved part refers to the arc-shaped structure that bends backward at the end of the handle, and can be formed in one piece by forging technology, and is used to guide the shovel tip to enter the soil at an inclined angle to reduce operating resistance. The wing-shaped shovel refers to the triangular or trapezoidal metal sheets symmetrically distributed on both sides of the handle, which can be fixed or welded to both sides of the handle by bolts, and is used to horizontally crush the soil on both sides when the blade moves, so as to expand the loosening range. Among them, the length of the second handle is greater than the length of the first handle 222, which means that the vertical extension size of the second handle is increased, which can be achieved by extending the steel length of the handle, and is used to increase the penetration depth of the second deep loosening blade 231 into the soil to break the deep plow bottom layer.

[0108] In one preferred implementation, the width of the second shovel tip is set to be greater than the width of the first shovel tip 223. The width of the second shovel tip being greater than the width of the first shovel tip 223 means that the lateral dimension of the shovel tip is expanded, which can be specifically achieved by widening the forging die of the shovel tip, and is used to enhance the lifting effect on the deep soil and reduce soil backfill.

[0109] Specifically, the vertical part of the first deep loosening blade 221 cuts into the soil surface vertically during operation, and the curved part drives the shovel tip to move along an inclined trajectory, reducing forward resistance and forming an arc-shaped loose soil channel. The wing-shaped shovel cuts the side wall of the soil during the movement of the handle, breaking and dispersing the surface soil blocks, and preventing the soil from accumulating behind the blade. The second deep loosening blade 231 penetrates deep into the lower soil layer through a longer handle. The wide shovel tip turns up the deep soil during the lifting process and forms a loose gap, forming a layered operation with the shallow crushing of the first deep loosening blade 221. The staggered distribution of the two blades allows the operating trajectory of the first deep loosening blade 221 to avoid the soil loosening area caused by the second deep loosening blade 231, avoiding the superposition of resistance caused by repeated operations. The synergistic effect of the surface crushing of the first deep loosening blade 221 and the deep loosening of the second deep loosening blade 231 can achieve layer-by-layer optimization of the soil structure.

[0110] Through the above technical solution, this application solves the problem of soil resistance concentration and operation blockage caused by the single structure of the deep loosening blade, and optimizes the crushing effect of the surface and deep soil through the layered loosening design. The lateral crushing effect of the wing shovel expands the loosening range and reduces the operating load of the subsequent blades. The differentiated handle length and shovel tip width enable different deep loosening knife groups to adapt to specific soil layer depths, avoid mutual interference between shallow and deep operations, and improve the overall deep loosening efficiency and equipment adaptability.

[0111] Further preferably, a hydraulic cylinder 120 is disposed on the mounting seat 110 , a power output end of the hydraulic cylinder 120 is rotatably mounted on the first rotating connection portion 216 , and the second rotating connection portion 217 is rotatably connected to the mounting seat 110 .

[0112] Among them, the mounting seat 110 refers to a supporting structure fixed to the front end of the driving operation vehicle 100, which can be realized by welding or bolting, and is used to support the connection parts of the deep tiller 200. The first rotating connection part 216 refers to a hinge point arranged on the deep tiller cover 210, which can be realized by a hinge structure with a bearing, and is used to form a rotating pair with the output end of the hydraulic cylinder 120. The second rotating connection part 217 refers to a pivot structure arranged at the other end of the deep tiller cover 210, which can be realized by a pin and a sleeve, and is used to form a rotating fulcrum with the mounting seat 110. The hydraulic cylinder 120 refers to a power drive device, which can be realized by a double-acting hydraulic cylinder, and controls the rotation angle of the deep tiller cover 210 around the second rotating connection part 217 through telescopic movement.

[0113] Specifically, the mounting seat 110 serves as a rigid support base, and is pivotally connected to the subsoiler cover 210 through the second rotating connection portion 217, so that the subsoiler 200 can rotate around the pivot. One end of the hydraulic cylinder 120 is hinged to the mounting seat 110, and the other end is connected to the subsoiler cover 210 through the first rotating connection portion 216. When the hydraulic cylinder 120 is extended and retracted, it pushes the subsoiler cover 210 to rotate around the axis of the second rotating connection portion 217, thereby adjusting the operating angle of the subsoiler knife group. For example, in a non-operating state, the hydraulic cylinder 120 contracts to lift the subsoiler knife group to a horizontal storage position; during operation, the hydraulic cylinder 120 extends to press the subsoiler knife group down to a preset tilt angle. This dual-degree-of-freedom connection structure allows the subsoiler 200 to dynamically adjust its posture according to the undulations of the ground during operation, avoiding rigid collisions with the driving operation vehicle 100.

[0114] Further preferably, depth limiting wheels (not shown in the figure) are further provided at both ends of the deep tiller 200 along the width direction of the driving operation vehicle 100 , and the depth limiting wheels can be adjusted along the height direction of the driving operation vehicle 100 .

[0115] The depth limiting wheel refers to a mechanical limit device for controlling the depth of the deep tillage blade into the soil, which can be implemented by a wheel structure with a hydraulic lifting mechanism. The device forms a depth reference by adjusting the relative height between the wheel body and the frame. The height direction adjustment setting refers to changing the vertical spacing between the depth limiting wheel and the deep tillage machine housing 210 through a mechanical transmission mechanism, which can be implemented by a screw lifting mechanism or a hydraulic cylinder drive, and its adjustment range can be designed to be, for example, 20 to 40 cm according to the typical soil tillage depth requirements.

[0116] Specifically, the depth limiting wheels are symmetrically arranged on both sides of the deep tiller 200, and the wheel body contacts the ground to form a support reference surface during operation. When the height of the depth limiting wheel is adjusted to a predetermined position, the cutting depth of the deep tiller blade is limited to a fixed vertical distance between the wheel body and the blade tip. When encountering a sudden change in soil hardness, the contact pressure between the depth limiting wheel and the ground generates a reaction force, and a torque balance is formed through a mechanical connection structure to prevent the blade from being subjected to instantaneous impact loads. When there is a lateral slope on the working terrain, the depth limiting wheels on both sides independently contact the ground to form a double reference surface to keep the deep tiller 200 in a lateral horizontal state.

[0117] Further preferably, see Figure 1 The combined tillage equipment with a subsoiler in front of the present application further includes a seed drill 400 and a fertilizer applicator 500. The seed drill 400 is located at the rear end of the rotary tiller 300 along the length direction. The seed drill 400 includes a plurality of seed discharge ports 420, which are sequentially spaced along the width direction. The fertilizer applicator 500 is located at the rear end of the seed drill 400 along the length direction. The fertilizer applicator 500 includes a plurality of fertilizer discharge ports 520, which are sequentially spaced along the width direction.

[0118] When the front end of the deep tiller 200 is viewed along the length direction toward the deep tiller 200, the multiple deep tiller blades of the deep tiller 200 are aligned with the seeding opening 420, and in the length direction, each seeding opening 420 is aligned with each fertilizer discharge opening 520, and in the height direction of the driving operation vehicle 100, each fertilizer discharge opening 520 is located at the lower end of the corresponding seeding opening 420. It should be noted that a support frame or a connecting frame needs to be provided at the bottom end of the seeding opening 420 and the fertilizer discharge opening 520, and in order to prevent the seeding opening 420 and the fertilizer discharge opening 520 from being blocked, the height of the seeding opening 420 and the fertilizer discharge opening 520 can also be increased, and those skilled in the art can adjust it according to actual needs, and this embodiment does not specifically limit this.

[0119] Among them, the seed discharge port 420 refers to the outlet of the seed drill 400 for releasing seeds, which can be specifically implemented by a tubular channel or a mechanical furrow opener, and the width-wise spacing setting ensures that the seeding row spacing is consistent with the deep loosening operation trajectory. The fertilizer discharge port 520 refers to the outlet of the fertilizer applicator 500 for releasing fertilizer, which can be specifically implemented by a conical guide tube or a spiral conveying device, which is longitudinally aligned with the seed discharge port 420 so that the fertilizer is accurately applied below the seeding row. The deep loosening blade is aligned with the seed discharge port 420, which means that the groove formed by the deep loosening operation coincides with the position of the seed discharge port 420 in the horizontal projection, which can be specifically implemented by mechanical positioning or sensor calibration to eliminate the influence of soil disturbance on the sowing positioning. The fertilizer discharge port 520 is located at the lower end of the seed discharge port 420, which means that the fertilizer discharge port 520 is lower than the seed discharge port 420 in the vertical direction, which can be specifically implemented by a height-adjustable bracket structure, using gravity to promote the fertilizer to settle below the seeds.

[0120] Specifically, after the deep tiller 200 completes the deep tillage of the soil at the front end, the rotary tiller 300 crushes and levels the soil at the rear end, and the seeder 400 then carries out sowing operations on the surface of the soil after rotary tillage. Since the seed openings 420 are spaced apart in the width direction and are aligned laterally with the deep tillage blades, the sowing rows can accurately fall into the soft groove area formed by the deep tillage operation, avoiding uneven sowing depth due to differences in soil structure. The fertilizer applicator 500 is located behind the seeder 400, and its fertilizer outlet 520 is strictly aligned with the seed outlet 420 in the length direction, so that fertilizer can be applied to the soil along the vertical projection direction of the sowing row. When the fertilizer outlet 520 is arranged below the seed outlet 420, the fertilizer naturally settles to the tillage layer below the seeds under the action of gravity, forming a spatial layout of seed and fertilizer separation. The three-dimensional position correlation design of the deep loosening blade, the seed discharge port 420, and the fertilizer discharge port 520 enables the deep loosening layer, the rotary tillage layer, the seeding layer, and the fertilization layer to form a vertical layered structure, which not only ensures the operation quality of each process, but also avoids position interference when multiple devices work together.

[0121] In some specific embodiments, the seeding port 420 can achieve row spacing adjustment through an adjustable furrow opener, for example, a hydraulically driven telescopic rod structure. The fertilizer outlet 520 can adopt an inclined guide plate design, and the guide plate angle can be adjusted according to the soil texture to control the fertilizer falling trajectory. The alignment of the deep loosening blade and the seeding port 420 can be monitored in real time by a laser positioning system. When it is detected that the position deviation exceeds the threshold, the seeder 400 is driven to make lateral fine adjustments to restore the alignment state. The lower end position of the fertilizer outlet 520 can be dynamically adjusted by a lifting mechanism, for example, the fertilization depth is automatically adjusted according to the soil moisture.

[0122] Through the above technical solution, this application realizes the one-time continuous operation of four processes: deep tillage, rotary tillage, sowing, and fertilization, which significantly improves the farming efficiency. The precise correspondence between the sowing row and the deep tillage trajectory ensures that the seeds always fall into the soft soil layer, improving the emergence rate. Fertilizer is accurately applied to the tillage layer below the sowing row, which not only avoids burning seedlings but also improves nutrient utilization. Each operating unit is compactly arranged along the length direction to avoid bloated equipment structure and reduce the demand for tractor traction. The three-dimensional spatial alignment mechanism effectively coordinates the collaborative operation of multiple devices and eliminates the risk of position interference between processes.

[0123] Further preferably, see Figure 1 and Figure 8 The seeder 400 includes a seed storage cabin 410, which is connected to a seed discharging port 420. A seed discharging device 430 is provided at the bottom of the seed storage cabin 410. The seed discharging device 430 includes a seed discharging turntable 440. A plurality of seed scraping parts 470 are evenly and spaced apart on the periphery of the seed discharging turntable 440. A seed discharging groove 450 is provided between two adjacent seed scraping parts 470. The output end of the seed discharging device 430 is connected to the seed discharging port 420 through a seed discharging pipe 460.

[0124] The fertilizer spreader 500 includes a fertilizer storage compartment 510, which is connected to a fertilizer discharge port 520. A fertilizer discharger is provided at the bottom of the fertilizer storage compartment 510. The fertilizer discharger includes a fertilizer discharge rotating disk, and a plurality of fertilizer scraping parts are evenly and spacedly provided on the outer circumference of the fertilizer discharge rotating disk. A fertilizer discharge groove is provided between two adjacent fertilizer scraping parts. The output end of the fertilizer discharger is connected to the fertilizer discharge port 520 through a fertilizer discharge pipe. It should be noted that in an implementation method disclosed in this embodiment, the structure of the fertilizer discharger is the same as that of the seeding device 430. Those skilled in the art may also set the fertilizer discharger to other structures, and this embodiment does not make the sole limitation thereto.

[0125] Among them, the seeding turntable 440 refers to a disc structure that discharges seeds quantitatively from the seed storage chamber 410 through rotational motion, which can be specifically implemented by a metal disc with grooves, and the scraping portion 470 arranged on its periphery is used to scrape the seeds into the seeding slot 450 during the rotation process. The fertilizer discharging turntable refers to a disc structure symmetrically arranged with the seeding turntable 440, which can be specifically implemented by a wear-resistant composite material, and the fertilizer scraping portion on its periphery is used to separate the granular fertilizer and guide it to the fertilizer discharging slot. The seed discharging pipe 460 and the fertilizer discharging pipe refer to the conveying pipes that respectively connect the seed discharging device 430, the fertilizer discharging device and the seed discharging port 420 and the fertilizer discharging port 520, which can be specifically implemented by a flexible corrugated pipe structure to adapt to the installation angle changes under different working terrains. The longitudinal alignment of the seed discharging port 420 and the fertilizer discharging port 520 means that the projections of the two coincide in the length direction of the driving working vehicle 100, which can be specifically achieved by adjusting the installation position by a positioning bracket to ensure that the fertilizer is located directly below the seeds.

[0126] Specifically, the seeds in the seed storage compartment 410 fall into the seeding slot 450 of the seeding turntable 440 under the action of gravity. When the turntable rotates, the scraper 470 scrapes off the excess seeds, so that each seeding slot 450 carries a fixed amount of seeds, which are transported to the seeding port 420 through the seeding pipe 460 to complete the sowing. The fertilizer in the fertilizer storage compartment 510 is separated by the fertilizer scraper through the rotation of the fertilizer discharging turntable, and after entering the fertilizer discharging slot, it is guided to the fertilizer discharging port 520 through the fertilizer discharging pipe, and the fertilization depth is adjusted by the height of the fertilizer discharging port 520. The sowing and fertilization modules adopt an independent turntable structure, and the power is synchronously distributed to the seeding device 430 and the fertilizer discharging device through the transmission shaft of the driving operation vehicle 100. The rotation speeds of the two can be independently adjusted to meet different sowing and fertilization requirements. The longitudinal alignment of the seeding port 420 and the fertilizer discharging port 520 allows the fertilizer to be applied at a predetermined distance below the seeds, avoiding direct contact between the fertilizer and the seeds to cause seed burning, while ensuring the effective distribution of nutrients in the soil.

[0127] Compared with the existing technology, the traditional equipment uses a vibrating discharging mechanism, which leads to a high seed breakage rate and easy clogging, while the rotary seeding turntable evenly distributes the seeds through centrifugal force, reducing the risk of clogging. In the existing technology, the separation of the sowing and fertilizing mechanisms requires two independent power systems, while this solution uses a symmetrical turntable structure with coaxial transmission to reduce the complexity of power distribution.

[0128] Through the above technical scheme, the present application realizes the synchronous and precise control of sowing and fertilizing operations, and solves the problem of low operating efficiency of traditional equipment caused by structural separation; the rotating scraper mechanism reduces the seed breakage rate and adapts to materials of different particle sizes; the independent modular design simplifies the equipment structure and reduces power transmission loss; the spatial matching of the seed discharge port 420 and the fertilizer discharge port 520 optimizes the fertilizer utilization rate and avoids seed burning.

[0129] For further information, see Figure 1 A leveling roller 600 is also provided at the rear end of the seed drill 400 and the fertilizer spreader 500, and the leveling roller 600 can further level the land after rotary tillage.

[0130] More preferably, see Figure 1 and Fig. 9 In the height direction of the driving working vehicle 100, the deep loosening height of the first deep loosening knife group 220 in the soil is the first deep loosening height H1, and the deep loosening height of the second deep loosening knife group 230 is the second deep loosening height H2. Among them, the first deep loosening height H1 is equal to the rotary tillage height H3 of the rotary tiller 300, the second deep loosening height H2 is greater than the first deep loosening height H1, the fertilizer discharge height H5 of the fertilizer discharge port 520 is equal to the rotary tillage height H3, the seed discharge height H4 (height dimension) of the seed discharge port 420 is less than the fertilizer discharge height H5 (height dimension), but the actual seed discharge height of the seed discharge port 420 in the soil is higher than the fertilizer discharge height H5 of the fertilizer discharge port 520, Fig. 9 Where L1 is the length distance of the driving work vehicle 100 .

[0131] With such a design, the farming equipment disclosed in the present application can realize the processing and farming functions of multi-layer soil. The fertilizer discharge height H5 of the fertilizer discharge port 520 is equal to the rotary tillage height H3. The fertilizer discharge port 520 is located below the seed discharge port 420. The fertilizer is directly applied to the rotary tillage layer and fully mixed with the soil, which is conducive to the absorption of the crop root system, avoiding volatilization and loss caused by the fertilizer applied to the surface layer, and improving the fertilizer utilization rate. The waste material below the seeds can increase the soil fertility, provide good environmental conditions for crop growth, promote root development, and enhance crop resistance. By setting knife groups with different deep loosening heights and reasonable fertilizer discharge height H5 and seed discharge height H4, soil stratification deep loosening, precise fertilization and reasonable sowing can be achieved, significantly improving soil structure, increasing crop yield and quality, and reducing production costs.

[0132] It should be noted that, in addition to the implementation methods of the present invention described in the above-mentioned specific specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation method. On the contrary, the purpose of introducing the invention in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the above description contains many specific details, and the present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0133] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0134] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0135] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0136] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0137] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A combined tillage equipment with a subsoiler in front, characterized in that: include: Driving work vehicles; A deep tiller, which is arranged at the front end of the driving working vehicle along the length direction of the driving working vehicle, and can rotate relative to the driving working vehicle; A rotary tiller, the rotary tiller being located at the rear end of the driving working vehicle along the length direction of the driving working vehicle, the rotary tiller comprising a rotary tiller shaft extending along the width direction of the driving working vehicle, and a plurality of rotary tiller blades being arranged at intervals on the rotary tiller shaft; wherein The deep loosening machine comprises a rotating drive mechanism, a deep loosening machine cover and two groups of deep loosening knife groups, the two groups of deep loosening knife groups are rotatably arranged on the deep loosening machine cover and are spaced apart along the length direction, and the group of deep loosening knife groups away from the driving operation vehicle can be movably adjusted relative to the deep loosening machine cover along the length direction, the rotating drive mechanism is arranged at the front end of the driving operation vehicle and is rotatably connected to one end of the deep loosening machine cover, each group of deep loosening knife groups comprises a plurality of deep loosening blades spaced apart in the width direction, the plurality of deep loosening blades of two adjacent groups of deep loosening knife groups are staggered in sequence along the width direction, and the two adjacent groups of deep loosening knife groups are configured so that the bottom ends of the deep loosening blades have a height difference; and The two groups of deep tilling knife groups can rotate relative to the deep tilling machine cover and be stored in the deep tilling machine cover, and the rotation angle of the two groups of deep tilling knife groups relative to the deep tilling machine cover is in the range of 0 to 90 degrees.

2. The combined tillage equipment with a subsoiler in front as claimed in claim 1, characterized in that: The two groups of deep loosening knife groups include a first deep loosening knife group and a second deep loosening knife group, the length of the first deep loosening knife group is smaller than the length of the second deep loosening knife group, and the bottom end of the first deep loosening knife group is higher than the bottom end of the second deep loosening knife group in the height direction of the driving operation vehicle; in The first deep loosening knife group comprises a first deep loosening knife shaft and a plurality of first deep loosening blades, the plurality of first deep loosening blades are evenly and spacedly arranged along the length direction of the first deep loosening knife shaft, the first deep loosening knife shaft is rotatably connected relative to the deep loosening machine cover, the first deep loosening knife group can be slidably arranged along the direction of the deep loosening machine cover, and the first deep loosening knife group can be switched between a storage state, an unfolded state and an adjustment state relative to the deep loosening machine cover; The second deep looming knife group includes a second deep looming knife shaft and a plurality of second deep looming blades. The plurality of second deep looming blades are evenly and spacedly arranged along the length direction of the second deep looming knife shaft. The second deep looming knife group can be switched between a storage state and an expanded state relative to the deep looming machine cover.

3. The combined tillage equipment with a subsoiler in front as claimed in claim 2, characterized in that: The subsoiler housing comprises an integrally formed first cover plate and a second cover plate, the first cover plate and the second cover plate are in an "L" shape, a third cover plate is fixedly provided on both sides of the first cover plate and the second cover plate, and the third cover plate is in a triangular shape; wherein The subsoiler housing also has an inclined sliding track, the first subsoiler knife group is slidably arranged on the sliding track, and the second subsoiler knife group is rotatably arranged on the subsoiler housing and is located at one end of the sliding track close to the driving operation vehicle; and When the first deep loosening knife group slides relative to the sliding track and moves in a direction away from the second deep loosening knife group, the size difference in the height direction between the bottom end of the first deep loosening knife group and the bottom end of the second deep loosening knife group decreases linearly.

4. The combined tillage equipment with a subsoiler in front as claimed in claim 3, characterized in that: The bottom end of the deep tiller cover is arranged to be open, and a plurality of adjustment slots are evenly and spaced apart on the sliding track. The shaft end of the first deep tiller shaft has a matching slot adapted to the adjustment slot, and also includes a fixing pin shaft, which can pass through the adjustment slot and the matching slot and fix the first deep tiller shaft relative to the sliding track.

5. The combined tillage equipment with a subsoiler in front as claimed in claim 4, characterized in that: The shaft ends of the first subsoiler shaft and the second subsoiler shaft are both provided with rotating bearings, and the rotating bearings can be switched between a rotating state and a limited state relative to the subsoiler housing; wherein The subsoiler housing is provided with a shaft mounting groove, the shaft mounting groove is provided with a first limiting rib and a second limiting rib, the rotating bearing is provided with an integrally formed limiting protrusion, the limiting protrusion can rotate between the first limiting rib and the second limiting rib, and a torsion spring is provided in the rotating bearing; and When the first deep loosening knife group and the second deep loosening knife group are in the expanded state relative to the deep loosening machine cover, the limiting protrusion abuts against the first limiting retaining edge, and the torsion spring is in a compressed state; When the first deep loosening knife group and the second deep loosening knife group are in the storage state relative to the deep loosening machine cover, the limiting protrusion abuts against the second limiting retaining edge, and the torsion spring is in a reset state.

6. The combined tillage equipment with a subsoiler in front as claimed in claim 2, characterized in that: Each of the first deep loosening blades comprises an integrally formed first handle and a first shovel tip, wherein the first handle comprises a vertical portion and a curved portion, and the first shovel tip is located at an end of the curved portion; Each of the second deep loosening blades comprises a second handle and a second shovel tip; the length of the second handle is greater than the length of the first handle.

7. The combined tillage equipment with a subsoiler in front as claimed in claim 2, characterized in that: The front end of the driving operation vehicle is provided with a mounting seat, and the subsoiler cover is provided with a first rotating connection part and a second rotating connection part; A hydraulic cylinder is arranged on the mounting seat, a power output end of the hydraulic cylinder is rotatably mounted on the first rotating connection part, and the second rotating connection part is rotatably connected to the mounting seat.

8. The combined tillage equipment with a subsoiler in front as claimed in any one of claims 1 to 7, characterized in that: It also includes a seeder, the seeder is located at the rear end of the rotary tiller along the length direction, the seeder includes a plurality of seeding openings, and the plurality of seeding openings are sequentially spaced along the width direction; and A fertilizer spreader, the fertilizer spreader is located at the rear end of the seed drill along the length direction, the fertilizer spreader comprises a plurality of fertilizer discharge ports, and the plurality of fertilizer discharge ports are sequentially spaced apart along the width direction; and When looking toward the deep tiller from the front end along the length direction, the multiple deep tilling blades of the deep tiller are aligned with the seed discharge port, and in the length direction, each seed discharge port is aligned with each fertilizer discharge port, and in the height direction of the driving working vehicle, each fertilizer discharge port is located at the lower end of the corresponding seed discharge port.

9. The combined tillage equipment with a subsoiler in front as claimed in claim 8, characterized in that: The seeder comprises a seed storage cabin, the seed storage cabin is connected with the seed discharging port, a seed discharging device is arranged at the bottom of the seed storage cabin, the seed discharging device comprises a seed discharging rotating disk, a plurality of seed scraping parts are evenly and spacedly arranged on the outer circumference of the seed discharging rotating disk, a seed discharging groove is arranged between two adjacent seed scraping parts, and an output end of the seed discharging device is connected with the seed discharging port through a seed discharging pipe; The fertilizer spreader includes a fertilizer storage compartment, which is connected to the fertilizer discharge port. A fertilizer discharger is arranged at the bottom of the fertilizer storage compartment. The fertilizer discharger includes a fertilizer discharge turntable. A plurality of fertilizer scraping parts are evenly and spaced apart on the outer circumference of the fertilizer discharge turntable. A fertilizer discharge groove is provided between two adjacent fertilizer scraping parts. The output end of the fertilizer discharger is connected to the fertilizer discharge port through a fertilizer discharge pipe.

10. The combined tillage equipment with a subsoiler in front as claimed in claim 9, characterized in that: In the height direction of the driving work vehicle, the deep loosening height of the first deep loosening knife group inside the soil is a first deep loosening height, and the deep loosening height of the second deep loosening knife group is a second deep loosening height; wherein the first deep loosening height is equal to the rotary tillage height of the rotary tiller, the second deep loosening height is greater than the first deep loosening height, the fertilizer discharge height of the fertilizer discharge port is equal to the rotary tillage height, and the seed discharge height of the seed discharge port is less than the fertilizer discharge height.

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