Farmland fertilization, soil loosening and soil leveling composite rotary tillage equipment suitable for organic fertilizer

Abstract

The utility model discloses farmland fertilization, soil loosening and soil leveling composite rotary tillage equipment suitable for organic fertilizers, which comprises a fertilization device, a fertilizer arrangement device and a rotary tillage device, the rotary tillage device comprises a rotary cultivator, a depth adjusting device, a triangular support frame and a motor box, and a rotary tillage blade on the rotary cultivator is a curved surface arc-shaped cutter with the upper end bent towards one side. The thickness is gradually increased from the blade to the blade back, the inclined blade breaks the soil, the bent cambered surface drives the soil to cover a groove formed by the blade, the depth adjuster is used for adjusting the depth of the rotary tillage blade in the soil, the fertilization device and the fertilizer preparation device can be combined for use, and the fertilization device, the fertilizer preparation device and the rotary tillage device can also be combined for use. The combined rotary tillage equipment for fertilization, fertilizer preparation, fertilizer pressing, soil loosening and soil leveling is formed, and the triple effects of fertilization, soil loosening and soil leveling are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically relating to a composite rotary tillage device for applying organic fertilizer, loosening soil, and leveling soil in farmland. Background Technology

[0002] With the increasing demands for green and ecological planting in modern agriculture, the replacement of chemical fertilizers with organic fertilizers has become an important trend in soil improvement. Traditional tillage machinery is mostly designed for chemical fertilizer application, revealing significant technical shortcomings in organic fertilizer application scenarios. Existing rotary tillage equipment generally adopts a single-function module design, requiring multiple machines to complete tasks such as fertilization, loosening, and leveling in separate operations, resulting in low operating efficiency and severe power consumption. It is particularly difficult to meet the intensive operation requirements of large-scale organic fertilizer application scenarios.

[0003] In the organic fertilizer application stage, the currently widely used external fertilizer spreading mechanisms suffer from poor material adaptability. Regarding the rotary tillage unit, the arrangement and entry angle of conventional rotary tillage blades are primarily designed for soil breaking, without considering the integration requirements of organic fertilizer and soil. Field trials show that the existing rotary tillage depth (12-15cm) is insufficient to effectively integrate organic fertilizer with deeper soil layers, resulting in a reduction of fertilizer decomposition and utilization rate by approximately 40%. Different soil types and crops have different requirements for rotary tillage depth, and existing equipment cannot flexibly adjust the tillage depth. Furthermore, the standard deviation of surface flatness after rotary tillage by existing equipment reaches 3-5cm, requiring additional harrowing operations, significantly increasing operating costs. Utility Model Content

[0004] In view of this, the present invention provides a composite rotary tillage device for applying organic fertilizer, loosening soil, and leveling soil in farmland, which aims to solve the problems of low operating efficiency and high operating costs. It adds a fertilization device on the basis of loosening soil to form a composite integrated mechanism for applying fertilizer, loosening soil, and leveling soil.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A composite rotary tillage device for applying organic fertilizer to farmland, loosening soil, and leveling soil, includes a fertilizer application device, a fertilizer preparation device that is flexibly connected to the fertilizer application device, and a rotary tillage device that is detachably and movably connected to the fertilizer application device. The rotary tillage device includes a rotary tiller, a depth adjuster, a triangular support frame, and a motor housing.

[0007] The rotary tiller includes a rotating drum, with a rotating shaft axially inserted through and fixedly connected to the drum. Both ends of the rotating shaft extend out of the drum. A pulley is fixedly mounted on the rotating shaft outside the drum. Rotary tillage blades are fixedly installed on the outer circumference of the drum. The rotary tillage blades are evenly distributed along the circumference of the drum and staggered along the axial direction of the drum. The rotary tillage blades are curved arc blades with a curved surface at the upper end that bends to one side. All rotary tillage blades have the same curvature direction. The rotary tillage blades include a cutting edge and a backing edge, with the thickness gradually increasing from the cutting edge to the backing edge.

[0008] The motor housing is located above the rotary tiller. The length of the motor housing is aligned with the axis of the rotary tiller's drum. A triangular support frame is fixedly connected to each of the two outer walls along the length of the motor housing. A depth adjuster is fixedly connected to each triangular support frame and the outer wall of the motor housing. The depth adjuster is used to adjust the soil penetration depth of the rotary tiller blades.

[0009] The depth adjuster includes two mating plates, which are rotatably connected by a rotating pin ring fixed at one end. Each mating plate has multiple semi-circular holes on its opposite side. After the mating plates are rotated and mated, the corresponding two semi-circular holes align to form a circular limiting hole. The diameter of the limiting hole is slightly larger than the diameter of the rotating shaft. One end of the mating plate is fixedly connected to the outer wall of the motor housing by a rotating pin, which passes through the rotating pin ring. The other end of the mating plate is fixedly connected to the triangular support frame by a positioning pin. One mating plate is fixed while the other is rotatable. After the mating plates are rotated and mated to form the limiting hole, the limiting hole clamps the rotating shaft.

[0010] Furthermore, a motor is installed inside the motor housing, and the motor output shaft is equipped with a motor pulley. The motor pulley on the motor output shaft and the pulley on the rotating drum are rotatably connected by a belt. A motor housing cover is hinged to the motor housing. A front soil barrier is fixedly installed on the front side of the rotary tiller, and a rear soil barrier is installed on the rear side of the rotary tiller. A flat soil plate is attached to the bottom of the rear soil barrier. The positioning pin has an extension section, which is fixedly connected to the back of the triangular support frame. Its extension section is away from the triangular support frame, and a rear wheel is rotatably connected to the extension section of each positioning pin. The rear wheel is used to assist in adjusting the soil penetration depth of the rotary tiller blades. The radius of the rear wheel is equal to the distance between the lowest point of the rotating drum and the wheel when the rotary tiller's shaft is located at the lower limit hole. The height of the rotary tiller blades is not less than the hole distance between the two limit holes.

[0011] Furthermore, the fertilization device includes a fertilizer storage box for holding fertilizer, with an axle fixedly connected to each of the four corners of the bottom surface of the fertilizer storage box, and each axle rotatably connected to a front wheel. The bottom surface of the fertilizer storage box is provided with a guide hopper, and the bottom of the guide hopper has a discharge port. A pair of first locking rings are fixedly connected to the center of one side of the fertilizer storage box, and a first buckle is fixedly connected to the two sides of the same side as the first locking rings.

[0012] The fertilizer preparation device includes a connecting rope and a rake. The connecting rope is a pair, with one end connected to the rake and the other end equipped with a locking hook. The fertilizer preparation device is flexibly connected to the fertilizer application device through the locking hook on the connecting rope and the first buckle. The rake is equipped with spikes, which are located on the side of the rake facing the ground.

[0013] The rotary tillage device includes a connecting rod, one end of which is fixedly connected to a first locking buckle. After the first locking buckle is inserted between the first locking rings, a pin is inserted. The other end of the connecting rod is fixedly connected to the motor housing.

[0014] After the fertilizing device is connected to the fertilizer preparation device, it can be used independently with a power unit; alternatively, the fertilizing device and fertilizer preparation device can be connected to a rotary tillage device to form a complete unit.

[0015] Furthermore, both the front and rear earth-blocking covers have curved cross-sections and curve towards the rotary tiller, with the arc length of the front earth-blocking cover being smaller than that of the rear earth-blocking cover.

[0016] The leveling plate is made of wear-resistant rubber sheet and is attached to the rear of the earth retaining cover by clips.

[0017] Furthermore, a second buckle is fixedly connected to one end of the mating plate away from the rotating pin ring, and a second locking ring is fixedly installed on the other end of the mating plate away from the rotating pin ring. The second locking ring is inserted into the second buckle to keep the two mating plates in a clamped state.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. Equipped with a depth adjuster, the rotary tillage depth can be adjusted according to different terrains, soil types, or crops, to achieve effective integration of organic fertilizer with deep soil and improve fertilizer decomposition and utilization rate; adapting to different terrains and improving the versatility of the device.

[0020] 2. The rotary tiller blades are curved on one side at the top, and the thickness increases from the blade edge to the back of the blade. This allows the blade to bend at an angle to break the soil, and the curved surface can better press fertilizer on the ground into the soil, reducing the amount of fertilizer exposed on the soil surface and improving fertilizer utilization.

[0021] 3. The rotary tiller can be used independently; the fertilizer and fertilizer preparation device can be connected together and equipped with a power unit for independent use; the fertilizer and fertilizer preparation device can be connected together and then connected to the rotary tiller to form a complete device to meet different agricultural needs.

[0022] 4. It can use a variety of fertilizers, including chemical fertilizers, farmyard manure or compost, which improves the adaptability of fertilizers. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of a composite rotary tillage equipment for fertilizing, loosening, and leveling farmland.

[0024] Figure 2 Schematic diagram of the fertilization device in a composite rotary tillage system for fertilizing, loosening, and leveling farmland.

[0025] Figure 3 This is a top view of the fertilizer storage box;

[0026] Figure 4 Isometric drawing of fertilizer storage box;

[0027] Figure 5 Schematic diagram of the fertilizer preparation device in a composite rotary tillage system for fertilizing, loosening, and leveling farmland.

[0028] Figure 6 A schematic diagram of the rotary tillage device in a composite rotary tillage system for fertilizing, loosening, and leveling farmland.

[0029] Figure 7 A schematic diagram of a rotary tiller with a rotary tillage device;

[0030] Figure 8 A schematic diagram of the depth adjuster in the engaged state;

[0031] Figure 9 A schematic diagram of the depth adjuster in the separated state;

[0032] Figure 10 This is a schematic diagram of the motor housing;

[0033] Figure 11 A breakdown diagram of the working operation of a composite rotary tillage equipment for fertilizing, loosening, and leveling farmland.

[0034] Figure 12 A diagram illustrating the working principle of rotary tillage blades in a composite rotary tillage device for fertilizing, loosening, and leveling farmland.

[0035] In the diagram: 11. Front wheel; 12. Fertilizer storage box; 13. First buckle; 14. First locking ring; 15. Guide hopper; 16. Discharge port; 21. Connecting rope; 22. Rake; 23. Locking hook; 24. Nail teeth; 31. First locking buckle; 32. Connecting rod; 33. Motor box cover; 34. Rear guard cover; 35. Leveling plate; 36. Front guard cover; 37. Rotary tiller; 38. Depth adjuster; 39. Triangle Support frame; 310, belt; 311, shaft; 312, rotary tiller blade; 313, pulley; 314, rotating pin; 315, limiting hole; 316, positioning pin; 317, second locking ring; 318, second retaining ring; 319, motor box; 320, third locking buckle; 321, third locking ring; 322, blade back; 323, blade edge; 4, pin; 5, rear wheel; 6, fertilizer. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] A composite rotary tillage device for applying organic fertilizer to farmland, loosening soil, and leveling soil, includes a fertilizer applicator, a fertilizer preparation device that is flexibly connected to the fertilizer applicator, and a rotary tillage device that is detachably and movably connected to the fertilizer applicator.

[0038] Please see Figure 1-3 The fertilization device includes a fertilizer storage box 12 for holding fertilizer. A wheel axle is fixedly connected to each of the four corners of the bottom surface of the fertilizer storage box 12. Each wheel axle is rotatably connected to a front wheel 11. A guide hopper 15 is provided on the bottom surface of the fertilizer box 12. A discharge port 16 is opened through the bottom of the guide hopper 15. A pair of first locking rings 14 are fixedly connected to the center of one side of the fertilizer box 12. A first buckle 13 is fixedly connected to the two sides of the same side as the first locking rings 14.

[0039] The discharge port 16 is equipped with a door that can be opened and closed. Fertilizer 6 is poured into the fertilizer storage box 12. The device at the rear pushes the fertilizer storage box 12, and the four front wheels 11 roll on the ground of the farmland. Under the action of vibration and gravity, fertilizer 6 is discharged from the open discharge port 16 and spread on the farmland.

[0040] Fertilizer 6 is one or more of the following: chemical fertilizer, farmyard manure, or compost.

[0041] Please see Figure 1 , 2 4. A fertilizer preparation device and a rotary tillage device are connected to the side of the fertilization device, which has a first buckle 13 and a first locking ring 14. The fertilizer preparation device includes a connecting rope 21 and a rake 22. The connecting rope 21 is provided with a locking hook 23, and the rake 22 is provided with nail teeth 24, which are located on the side of the rake 22 facing the ground. The fertilizer preparation device is flexibly connected to the fertilization device through the locking hook 23 on the connecting rope 21 and the first buckle 13. The fertilizer preparation device is used to turn over the fertilizer 6 exposed on the soil surface and bury it in the soil, to even out the uneven fertilizer 6, and to level the soil surface.

[0042] After the fertilizing device is connected to the fertilizer preparation device, it can be used independently with a power unit; alternatively, the fertilizing device and fertilizer preparation device can be connected to a rotary tillage device to form a complete unit.

[0043] Please see Figure 1 and 6-9. The rotary tillage device includes a connecting rod 32, a rotary tiller 37, a depth adjuster 38, a triangular support frame 39, a front soil retainer 36, a rear soil retainer 34, a leveling plate 35, and a motor housing 319. The motor housing 319 is fixedly installed above the rotary tiller 37, and the length direction of the motor housing 319 is aligned with the axis of the rotary tiller 37's drum. The motor housing 319 is equipped with an openable and closable motor housing cover 33, and a third locking buckle 320 is fixedly connected to the motor housing cover 33. A third locking ring 321 is fixedly connected to one outer side wall of the motor housing 319. The third locking buckle 320 and the third locking ring 321 cooperate to lock the motor housing cover 33.

[0044] The rotary tiller and the fertilizer are connected as follows: one end of the connecting rod 32 is fixedly connected to the first locking buckle 31. After the first locking buckle 31 is inserted between the first locking rings 14, the pin 4 is inserted for movable connection. The other end of the connecting rod 32 is fixedly connected to the outer side wall of the motor box 319 opposite to the side where the third locking ring 321 is installed. That is, the rotary tiller and the fertilizer are movably connected through the connecting rod 32.

[0045] Please see Figure 7 The rotary tiller 37 includes a rotating drum, with a rotating shaft 311 axially inserted through and fixedly connected to the center of the drum. Both ends of the rotating shaft 311 extend out of the drum. A pulley 313 is mounted on the rotating shaft 311 located outside the drum. Rotary tillage blades 312 are fixedly mounted on the outer circumferential surface of the drum. The rotary tillage blades 312 are evenly distributed along the circumference of the drum and staggered along the axial direction of the drum. Figure 7 Only a portion of the rotary tiller blades 312 is shown. The rotary tiller blades 312 are curved blades with an upper end that bends to one side. The blade edge 323 is the soil-facing side, and the blade back 322 is the soil-repelling side. The thickness of the blade gradually increases from the blade edge 323 to the blade back 322. When the rotary tiller blades 312 are fixedly installed on the rotating drum, their upper ends are far away from the rotating drum. The curved surfaces of all the rotary tiller blades 312 have the same curvature, and the tangent of their curved surfaces forms an acute angle with the axis of the rotating drum, and they are distributed in a parallel oblique line state. When the rotating drum rotates, its positive rotation direction is the same as the direction from the blade back 322 to the blade edge 323. That is, when the rotating drum rotates, the blade edge 323 of the same rotary tiller blade 312 enters the soil first, and the blade back 322 enters the soil later. Furthermore, during the process of the blade back 322 entering the soil, the curved surface of the blade carries the soil to cover the grooves carved by the blade edge 323.

[0046] Please see Figure 6 , 8 9. A triangular support frame 39 is fixedly connected to each of the two outer walls of the motor housing 319 along its length. A depth adjuster 38 is fixedly connected to each triangular support frame 39 and the outer wall of the motor housing 319. The depth adjuster 38 is used to adjust the soil penetration depth of the rotary tiller blades 312.

[0047] The depth adjuster 38 includes two mating plates, which are rotatably connected by a rotating pin ring fixed at one end. Each mating plate has multiple semi-circular holes on its opposite sides. After the mating plates rotate and mate, two corresponding semi-circular holes align to form a circular limiting hole 315. Multiple pairs of corresponding semi-circular holes align to form multiple circular limiting holes 315. The diameter of the limiting holes 315 is slightly larger than the diameter of the rotating shaft 311. One end of the mating plates of the depth adjuster 38 is fixedly connected by a rotating pin 314. The rotating pin 314 is inserted into the rotating pin ring on the outer wall of the motor housing 319. The other end of the mating plate is fixedly connected to the triangular support frame 39 by the positioning pin 316. The positioning pin 316 occupies the last semi-circular hole, forming two mating plates. One mating plate is fixed, and the other mating plate can rotate around the axis. After rotation and mating, multiple limiting holes 315 are formed. The limiting holes 315 can clamp the rotating shaft 311. Different limiting holes 315 can allow the rotary tiller blades 312 to have different soil penetration depths. To prevent loosening after mating, a second retaining ring 318 is fixedly connected on the fixed mating plate, and a second locking ring 317 is fixedly installed on the rotatable mating plate. The second locking ring 317 is inserted into the second retaining ring 318 to keep the two mating plates in a clamped state.

[0048] The positioning pin 316 has an extension section. After the positioning pin 316 is fixedly connected to the triangular support frame 39, its extension section is away from the triangular support frame 39. A rear wheel 5 is rotatably connected to the extension section of each positioning pin 316. The rear wheel 5 is used to assist in adjusting the soil penetration depth of the rotary tiller blades 312. The radius of the rear wheel 5 is equal to the distance between the lowest point of the drum and the wheel when the rotating shaft 311 of the rotary tiller 37 is located at the lower limiting hole 315. The height of the rotary tiller blades 312 is not less than the hole distance between the two limiting holes 315. The purpose of this design is that when the shaft is located at the lower limiting hole, the height of the rotary tiller blades plus the drum is greater than the wheel radius. The weight of the motor housing plus the downward cutting force generated when the device moves will cause the rotary tiller blades to be inserted into the soil. When the shaft is located at the upper limiting hole, the height of the rotary tiller blades plus the drum is still greater than the wheel radius, but only a portion of the rotary tiller blades needs to be inserted into the soil. At this point, the depth is less than that at the lower limiting hole, and the device can start working. Again, the weight of the motor housing 319 and the downward cutting force generated when the device moves will cause the blades to be inserted into the soil.

[0049] The motor housing 319 contains a motor, and the output shaft of the motor is equipped with a motor pulley. The pulley on the motor output shaft and the pulley 313 on the rotating drum are rotatably connected by a belt 310, which drives the rotary tiller 37 to rotate.

[0050] The process of adjusting the soil penetration depth of the rotary tiller blade 312 is as follows: unlock the second locking ring 317, rotate the mating plate, lift the rotating shaft 311 and re-clamp it into the other limiting holes 315, lock the second locking ring 317, and at the same time replace the appropriate belt 310 to complete the adjustment.

[0051] The motor drives the rotating drum to rotate in the forward direction via a belt and shaft 311. This forward rotation results in the entire device moving in the same direction as the rotary tiller 37, towards the fertilizer storage box 12. (See also...) Figure 11 (The direction indicated by the V-shaped arrow) means that the rotary tiller 37 pushes the fertilizer storage box 12 to move, and the rotary tiller blades 312 on the rotating drum perform the work of loosening the soil, opening shallow trenches, and covering the soil.

[0052] Please see Figure 1 The rotary tiller 37 has a front soil retainer 36 fixedly installed on the front side and a rear soil retainer 34 on the rear side, with a leveling plate 35 attached to the bottom of the rear soil retainer 34. The fertilization device spreads fertilizer on the ground, the rake 22 flattens and evenly distributes the fertilizer, and then the rotary tiller 37 presses the relatively flat and even fertilizer on the ground into the soil and mixes it evenly. Finally, the leveling plate 35 is used to level the soil that has been rotary tilled, thus fully realizing the performance of adjustable deep soil loosening and fertilization.

[0053] Both the front guard 36 and the rear guard 34 have curved cross-sections and curve toward the rotary tiller 37. The arc length of the front guard 36 is smaller than that of the rear guard 34.

[0054] The leveling plate 35 is made of a thick rubber sheet that is wear-resistant, has a certain degree of toughness and good properties. The leveling plate 35 is attached to the tail of the rear retaining cover 34 by a snap fastener. The leveling plate 35 is replaceable.

[0055] Please see Figure 11 and 12 When using this utility model, after the fertilizer 6 is spread onto the ground by the fertilization device on the front side, the uneven fertilizer 6 is leveled by the rake 22. Then, the belt 310 drives the rotating shaft 311 of the rotary tiller 37 to rotate. Since the rotary tiller blade 312 has a curved arc surface and the thickness of the rotary tiller blade 312 gradually increases from the blade 323 to the back of the blade 322, the blade 323 is inserted into the soil at an angle. The curved arc surface and the back of the blade 322 together mix the fertilizer 6 with the soil. After the rotary tiller 37 tills, the loose and uneven soil is leveled by the leveling plate 35. The tillage depth can also be adjusted according to different fertilizer and soil requirements, forming a complete composite rotary tillage equipment for fertilization, fertilizer preparation, fertilizer pressing, soil loosening and leveling, ultimately achieving the dual benefits of soil loosening and fertilization.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without being bound by the spirit or basic features of this invention.

Claims

1. A farmland fertilization, loosening and smoothing compound rotary tillage equipment suitable for organic fertilizer, comprising a fertilization device, a whole fertilizer device connected with the fertilization device in a soft manner, and a rotary tillage device detachably and movably connected with the fertilization device, characterized in that, The utility model provides a rotary tiller device, including rotary tiller (37), depth regulator (38), triangular support frame (39) and motor box (319); The rotary tiller (37) includes a rotary drum, a rotary shaft (311) is arranged in the center of the rotary drum and fixedly connected with the rotary drum, both ends of the rotary shaft (311) extend out of the rotary drum, a belt pulley (313) is fixedly arranged on the rotary shaft (311) outside the rotary drum, rotary blades (312) are fixedly installed on the outer circumferential surface of the rotary drum, the rotary blades (312) are uniformly distributed along the circumferential direction of the rotary drum and staggered distributed along the axial direction of the rotary drum, the rotary blades (312) are curved surface arc blades with one side bending on the upper end, the curved surfaces of all the rotary blades (312) bend in the same direction, the rotary blades (312) include cutting edges (323) and cutting backs (322), and the thickness gradually increases from the cutting edges (323) to the cutting backs (322); The motor box (319) is arranged above the rotary tiller (37), the length direction of the motor box (319) is consistent with the axial direction of the rotary drum of the rotary tiller (37), one triangular support frame (39) is fixedly connected to each side outer wall of the length direction of the motor box (319), one depth regulator (38) is fixedly connected to each triangular support frame (39) and the outer wall of the motor box (319), and the depth regulator (38) is used for adjusting the soil penetration depth of the rotary blades (312); The depth regulator (38) includes two clamping plates, the two clamping plates are rotatably connected through a rotating pin ring fixedly connected at one end, a plurality of semicircular holes are formed on the opposite sides of the two clamping plates, respectively, the clamping plates are clamped and rotated, a circular limiting hole (315) is formed after the two semicircular holes are clamped and rotated, the diameter of the limiting hole (315) is slightly larger than the diameter of the rotary shaft (311), one end of the clamping plate is fixedly connected to the outer wall of the motor box (319) through the rotating pin (314), the rotating pin (314) is arranged in the rotating pin ring, the other end of the clamping plate is fixedly connected to the triangular support frame (39) through the positioning pin (316), one clamping plate is fixed, the other clamping plate is rotatable, and the limiting hole (315) clamps the rotary shaft (311) after being clamped and rotated into the limiting hole (315).

2. The farmland fertilization, soil loosening, and soil leveling composite rotary tillage equipment suitable for organic fertilizer according to claim 1, characterized in that: A motor is arranged in the motor box (319), and an output shaft of the motor is provided with a motor pulley. The motor pulley on the output shaft of the motor and the pulley (313) on the rotating drum are rotationally connected through a belt (310). The motor box (319) is hingedly connected with a motor box cover (33). The front side of the rotary tiller (37) is fixedly provided with a front soil blocking cover (36), and the rear side of the rotary tiller (37) is fixedly provided with a rear soil blocking cover (34). The rear soil blocking cover (34) is provided with a land leveling plate (35). The positioning pin (316) has an extension section. The positioning pin (316) is fixedly connected to the rear of the triangular support frame (39), and the extension section thereof is away from the triangular support frame (39). A rear wheel (5) is rotationally connected to the extension section of each positioning pin (316). The rear wheel (5) is used for assisting in adjusting the soil penetration depth of the rotary tiller blade (312). The radius of the rear wheel (5) is equal to the distance between the rotating drum and the lowest point of the wheel when the rotating shaft (311) of the rotary tiller (37) is located in the lower limiting hole (315). The height of the rotary tiller blade (312) is not less than the hole distance between the two limiting holes (315).

3. The farmland fertilization, soil loosening, and soil leveling composite rotary tillage equipment suitable for organic fertilizer according to claim 2, characterized in that: The fertilizer application device comprises a fertilizer storage tank (12) for storing fertilizer. Four wheel shafts are fixedly connected to the bottom surface of the fertilizer storage tank (12), and each wheel shaft is rotationally connected with a front wheel (11). A material guide hopper (15) is arranged on the inner bottom surface of the fertilizer storage tank (12), and a discharge port (16) is formed in the bottom of the material guide hopper (15). A pair of first locking rings (14) are fixedly connected to the central position of one side of the fertilizer storage tank (12). A first buckle ring (13) is fixedly connected to each side edge of the same side as the first locking ring (14). The fertilizer application device is connected with the fertilizer application device through the locking hook (23) on the connecting rope (21) and the first buckle ring (13). The harrow (22) is provided with a plurality of tines (24) arranged on the side of the harrow (22) facing the ground. The rotary tiller device comprises a connecting rod (32). One end of the connecting rod (32) is fixedly connected with a first lock buckle (31). After the first lock buckle (31) is inserted between the first locking rings (14), the first lock buckle (31) is inserted into the pin (4). The other end of the connecting rod (32) is fixedly connected with the motor box (319).

4. The farmland fertilization, soil loosening, and soil leveling composite rotary tillage equipment suitable for organic fertilizer according to claim 3, characterized in that: The front soil blocking cover (36) and the rear soil blocking cover (34) are both curved in cross section and are curved towards the rotary tiller (37). The arc length of the front soil blocking cover (36) is smaller than that of the rear soil blocking cover (34). The land leveling plate (35) is made of wear-resistant rubber plate and is attached to the tail of the rear soil blocking cover (34) through buckling.

5. The farmland fertilization, soil loosening, and soil leveling composite rotary tillage equipment suitable for organic fertilizer according to claim 1, characterized in that: A second buckle ring (318) is fixedly connected to one end of one of the two split plates away from the rotating pin ring. A second locking ring (317) is fixedly mounted on the other end of the other split plate away from the rotating pin ring. The second locking ring (317) is inserted into the second buckle ring (318), so that the two split plates are kept in a clamped state.

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