Line-spacing-adjustable fertilizer applicator for planting traditional Chinese medicine

Abstract

The invention discloses a row spacing adjustable fertilizer applicator for traditional Chinese medicine planting, which comprises an arranged base, moving wheels are mounted under the base, an auxiliary box is mounted on the base, and a storage box is arranged on the auxiliary box; a first motor is installed in the auxiliary box, the output end of the first motor is connected with a stirring piece, the bottom of the material storage box is connected with an adjusting assembly through a conveying pipeline, the adjusting assembly comprises an adjusting cylinder connected to the bottom of the conveying pipeline, and rotating blades are installed in the adjusting cylinder; the output end of the rotating blade is connected to the moving wheel rotating shaft through a driving piece. According to the row-spacing-adjustable fertilizer applicator for traditional Chinese medicine planting, the first motor drives the stirring part to rotate in the storage box, the problem that fertilizer is hardened in the storage box and consequently fertilization is inconvenient is solved, and the driving part drives the rotating blades to rotate, so that fertilizer discharging is more uniform, and the fertilizer applying efficiency is improved. And the problem that the discharging volume is not uniform due to the fact that the discharging speed cannot be controlled is solved.

Description

Technical Field

[0001] The invention relates to the technical field related to Chinese medicinal herb planting, and in particular to a fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing. Background Art

[0002] Traditional Chinese medicine planting requires fertilization. The fertilizer applicator used in traditional Chinese medicine planting is an agricultural machinery used to improve the growth quality and yield of traditional Chinese medicines. However, the existing fertilizer applicators used in traditional Chinese medicine planting still have certain defects when used, such as; During use, when the existing fertilizer spreader stores unapplied fertilizer inside the fertilizer spreader, the fertilizer inside will come into contact with moisture in the outside air, thus causing the fertilizer to become damp and clump, thereby preventing personnel from applying fertilizer normally. In order to overcome the above-mentioned defects, prior art 1 (Chinese patent with application number 202121342498.1 and application date 2021-06-17) is a directional quantitative fertilizer applicator, comprising a feed hopper fixedly provided on one side of the top of a box body, four fixed rods fixedly provided in the middle of the inner wall of the bottom end of the box body, and a mixing tank fixedly connected to the top of the four fixed rods, a weighing assembly comprising a weighing device, a shell, an arc plate, a discharge pipe and a first solenoid valve, a fixed plate fixedly provided in the middle of the inner wall of one side of the box body, a weighing device fixedly arranged at the top of the fixed plate, closing the second solenoid valve in the middle and opening the other two second solenoid valves, and starting the pressure pump to spray the fertilizer mixture inside the mixing tank through the main pipe and two of the branch pipes from two of the nozzles, thereby achieving the effect of directional fertilization; the fertilizer is added into the arc plate through the feed hopper for weighing, and when the weight reaches the set value, the weighing device opens the first solenoid valve for discharge, and the fertilizer enters the interior of the mixing tank through the discharge pipe and the discharge hopper; There is also prior art 2 (Chinese patent with application number 202220547535.0 and application date 2022-03-14), which is a new agricultural fertilizer spreader that is convenient for fertilizing. The utility model relates to the technical field of agricultural fertilization, including a mounting frame; a fertilizer box is provided at the top of the surface of the mounting frame, a drying shell is provided at the top of the side of the fertilizer box, a motor is provided at the bottom of the inside of the fertilizer box, an electric push rod is provided at the top of the motor, a heating resistance wire is provided on the inner side of the drying shell, a fan is provided on one side of the top of the surface of the mounting frame, an air outlet is provided at the output end of the fan through a conduit, and the side of the drying shell is connected to the air outlet, a protective net is provided on the side of the fertilizer box at the corresponding position of the heating resistance wire, a baffle is provided at one end of the electric push rod, and a drop hole is provided on the surface of the baffle inside the fertilizer box; an electric push rod and a baffle structure are used to control the feeding speed of the fertilizer box, thereby avoiding excessive feeding of fertilizer, reducing the repeated coverage rate of fertilizer application, and thus reducing the cost of fertilization; And prior art 3 (Chinese patent with application number 202222817968.6 and application date 2022-10-25) An organic fertilizer mixing and stirring fertilizer spreader, comprising a base plate and a funnel-shaped shell, wherein the four corners of the bottom of the base plate are fixed with supporting feet, the bottom of the supporting feet are fixed with wheels, a plate hole is opened on the base plate, the funnel-shaped shell is arranged above the base plate, and supporting rods are fixed between the four sides of the bottom of the funnel-shaped shell and the base plate, a stirring mechanism is arranged in the funnel-shaped shell, and a discharge pipe is connected to the bottom of the funnel-shaped shell. When the fertilizer spreader is in use, it only needs to connect the fertilizer to a tractor and pour a variety of fertilizers into the funnel-shaped shell. The various fertilizers in the funnel-shaped shell can be stirred and mixed through the stirring mechanism.

[0003] Although the existing technology can fertilize normally, during the working process, the fertilizer is processed by stirring or drying. However, the drying structure set up increases the cost of operation and easily affects the quality of the fertilizer. In addition, the fertilizer after stirring is directly sprayed, and the overall feeding speed cannot be effectively controlled, resulting in uneven overall feeding volume. Therefore, it will cause excessive fertilizer feeding, resulting in increased fertilization costs, thereby affecting the growth quality of traditional Chinese medicine.

[0004] In view of the above problems, it is urgently necessary to carry out innovative design based on the original fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing. Therefore, we proposed a fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing, which can well solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing, so as to solve the problem proposed by the above background technology that fertilizers are processed by stirring or drying in the current market, but the drying structure provided increases the operating cost and easily affects the quality of the fertilizer, and the fertilizer after stirring is directly sprayed, and the overall feeding speed cannot be effectively controlled, resulting in uneven overall feeding volume, which will cause excessive fertilizer feeding and increase the fertilization cost, thereby affecting the growth quality of Chinese medicinal herbs.

[0006] To achieve the above object, the present invention provides the following technical solution: a fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing, comprising a base, a movable wheel is installed under the base, an auxiliary box is installed on the base, a material storage box is arranged on the auxiliary box, and a material feeding hopper is arranged on the material storage box; A first motor is installed inside the auxiliary box, and a stirring member is connected to the output end of the first motor. The stirring member is connected to the inside of the storage box. The bottom of the storage box is connected to an adjusting component through a conveying pipe. The adjusting component includes an adjusting cylinder connected to the bottom of the conveying pipe. A rotating blade is installed inside the adjusting cylinder. The output end of the rotating blade is connected to the rotating shaft of the moving wheel through a driving member. A spreading member is connected to the bottom of the adjusting cylinder through a hose. The fertilizer is evenly transported by the rotation of the rotating blade of the adjusting assembly. The fertilizer is transported to the spreading member and sprinkled out through the cooperation of the adjusting cylinder, so as to perform fertilization operation. Rotating blades are arranged inside the adjusting cylinder, which are convenient for driving the rotating blades to rotate through the driving member, so that the fertilizer is discharged more evenly.

[0007] Preferably, the output end of the first motor is connected to an eccentric wheel, the eccentric wheel is located inside the auxiliary box, a side end of the eccentric wheel is provided with a striking assembly, and the striking assembly includes a pressure plate installed on the side end of the eccentric wheel.

[0008] Preferably, a moving rod is installed at the side end of the pressure plate, and the moving rod is connected through the inside of the limiting plate, and the limiting plate is installed inside the auxiliary box.

[0009] Preferably, the other end of the moving rod is connected to a striking plate, and the striking plate is located at the side end of the conveying pipe. A spring is sleeved on the outer side of the moving rod. After the eccentric wheel rotates, it contacts the pressure plate. The output end of the first motor drives the eccentric wheel to rotate. After the eccentric wheel rotates, it contacts the pressure plate. The pressure plate drives the moving rod to move inside the limiting plate, so that the striking plate at the end of the moving rod can strike the conveying pipe, so that the fertilizer inside the conveying pipe can fall stably, reducing the problem of fertilizer being blocked inside the conveying pipe and causing inconvenience in fertilization.

[0010] Preferably, a driving assembly is installed inside the base, and the driving assembly includes a storage box installed inside the base, a second motor is installed at a side end of the storage box, and a forward and reverse screw is connected to an output end of the second motor.

[0011] Preferably, the outer sides of the forward and reverse screws are threadedly connected to a moving seat, the bottom of the moving seat is connected to a material sprinkling piece, and the moving seat is symmetrically arranged.

[0012] Preferably, a guide rod is connected to the inside of the movable seat, and the guide rod is arranged in parallel with the forward and reverse screws. The second motor drives the forward and reverse screws to rotate, so that the movable seat can move through the cooperation of the guide rod, thereby moving the position of the sprinkler, so that the whole can be easily adjusted according to the row spacing, so that the sprinkler can be convenient for spraying fertilizer.

[0013] Preferably, an auxiliary component is connected to the bottom of the movable seat, and the auxiliary component includes a protective frame installed at the bottom of the movable seat, a rotating shaft is arranged inside the protective frame, and a first limiting frame is installed on one side of the rotating shaft.

[0014] Preferably, a second limit frame is installed on the other side of the rotating shaft, a trenching knife is rotatably connected inside the first limit frame, and an auxiliary wheel is rotatably connected inside the second limit frame. A limiting member is arranged on the protective frame, and the soil is trenched by the trenching knife inside the first limit frame, and the trenching knife is rotated by the movement of the device, so that the overall operation is convenient, and the fertilization operation is performed with the cooperation of the spreading member under the mobile seat, thereby improving the overall fertilization efficiency, making it more convenient for the later planting of traditional Chinese medicine, and improving the growth quality of traditional Chinese medicine. When fertilization is needed after the growth of traditional Chinese medicine, the second limit frame can be rotated out through the rotating shaft, and the limiting member can be used to limit the first limit frame inside the protective frame. At this time, the mobile seat is used to adjust the distance of the spreading member, so that the spreading member is conveniently located on both sides of the traditional Chinese medicine plant. At this time, the auxiliary wheels inside the second limit frame are convenient to move inside the groove, thereby improving the overall practicality.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the first motor drives the stirring member to rotate inside the storage box, thereby reducing the problem of fertilizer compaction inside the storage box causing inconvenience in fertilization, and the driving member drives the rotating blade to rotate, thereby making the fertilizer feeding more uniform, reducing the problem of uneven feeding volume caused by the inability to control the feeding speed, and the specific contents are as follows: The fertilizer is evenly transported by the rotating blades of the adjustment component, which not only reduces the inconvenience caused by direct spillage of fertilizer, but also facilitates adjustment according to the speed of the moving wheel, reduces the problem of uneven volume of material due to uncontrollable material discharge speed, and improves the overall fertilization efficiency; The pressing plate of the striking assembly drives the moving rod to move inside the limiting plate, so that the striking plate at the end of the moving rod can strike the conveying pipe, so that the fertilizer inside the conveying pipe falls stably, reducing the problem of fertilizer blocking inside the conveying pipe and causing inconvenience in fertilization; The second motor of the driving assembly drives the forward and reverse screws to rotate, so that the movable seat can move through the cooperation of the guide rod, and the position of the material spraying part can be moved and adjusted according to the required distance, so that the material spraying part is convenient for spraying fertilizers, and the overall application range is increased; When ditching and fertilizing is required, the soil is ditched by the ditching knife of the auxiliary component. The ditching knife rotates through the movement of the device. The ditching knife cooperates with the material spreading part to perform fertilization operation, thereby improving the overall fertilization efficiency. The rotating shaft of the auxiliary component rotates the second limit frame out, and uses the limit piece to limit the first limit frame inside the protective frame. At this time, the auxiliary wheels inside the second limit frame are convenient for moving inside the groove, reducing the problem of increased costs caused by using different machines for Chinese medicine trenching and fertilization and later fertilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the auxiliary box of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the overall bottom-up structure of the present invention; Figure 6 This is a schematic diagram of the connection structure between the movable seat and the guide rod of the present invention; Figure 7 This is a schematic diagram of the structure of the movable seat after movement of the present invention; Figure 8 This is a schematic diagram of the connection structure between the movable seat and the material sprinkling member of the present invention; Fig. 9 This is a schematic diagram of the internal structure of the protection frame of the present invention; Fig.10 This is a schematic diagram of the structure of the auxiliary wheel after rotation of the present invention.

[0017] In the figure: 1. base; 2. moving wheel; 3. auxiliary box; 4. storage box; 5. hopper; 6. first motor; 7. stirring element; 8. conveying pipeline; 9. adjusting cylinder; 10. rotating blade; 11. driving element; 12. material sprinkling element; 13. eccentric wheel; 14. limit plate; 15. moving rod; 16. striking plate; 17. spring; 18. pressure plate; 19. storage box; 20. second motor; 21. forward and reverse screw rods; 22. moving seat; 23. guide rod; 24. protective frame; 25. rotating shaft; 26. first limit frame; 27. trenching knife; 28. second limit frame; 29. ​​auxiliary wheel; 30. limit element. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0019] In this embodiment, in order to improve the overall fertilization efficiency, the adjustment component is used to reduce the problem of uneven material volume caused by the uncontrollable material feeding speed, such as Figure 1-Figure 4 The technical solution shown in the figure comprises a base 1, a moving wheel 2 is installed under the base 1, an auxiliary box 3 is installed on the base 1, a storage box 4 is arranged on the auxiliary box 3, a feeding hopper 5 is arranged on the storage box 4, a first motor 6 is installed inside the auxiliary box 3, an output end of the first motor 6 is connected with a stirring member 7, the stirring member 7 is connected through the storage box 4, the bottom of the storage box 4 is connected with an adjusting component through a conveying pipe 8, the adjusting component comprises an adjusting cylinder 9 connected to the bottom of the conveying pipe 8, a rotating blade 10 is installed inside the adjusting cylinder 9, the output end of the rotating blade 10 is connected to the rotating shaft of the moving wheel 2 through a driving member 11, a material sprinkling member 12 is connected to the bottom of the adjusting cylinder 9 through a hose, the fertilizer is uniformly transported by rotating the rotating blade 10 of the adjusting component, the fertilizer required for Chinese medicine planting is poured into the storage box 4 through the feeding hopper 5, and the device is moved to the desired position through the moving wheel 2 under the base 1, at this time, the first motor 6 inside the auxiliary box 3 is used for driving, which is convenient for carrying The dynamic stirring member 7 rotates inside the storage box 4, reducing the problem of fertilizer compaction inside the storage box 4 causing inconvenience in fertilization, and can mix according to the required fertilizer, which not only improves the overall fertilization efficiency, but also improves the growth quality of Chinese medicine. The stirred fertilizer is transported through the conveying pipe 8, and is transported to the sprinkling member 12 for sprinkling through the cooperation of the adjusting cylinder 9, so as to perform the fertilization operation. The adjusting cylinder 9 is provided with rotating blades 10, which are convenient for driving the rotating blades 10 to rotate through the driving member 11, so that the fertilizer is discharged more evenly, which not only reduces the inconvenience caused by direct fertilizer sprinkling, but also facilitates adjustment according to the speed of the moving wheel 2, reducing the problem of uneven discharge volume caused by the uncontrollable discharge speed. When the moving wheel 2 rotates faster, the rotating blades 10 rotate faster, which is convenient for rapid sprinkling, thereby improving the overall fertilization efficiency. The overall structure is simple, and the problem of increased operating costs caused by setting a drying structure is reduced. Embodiment 2:

[0020] In this embodiment, in order to improve the overall fertilizer delivery efficiency, the striking assembly is used to reduce the problem of fertilizer blocking inside the delivery pipe 8 and causing inconvenience in fertilization. Figure 4-Figure 7As shown, the output end of the first motor 6 is connected to an eccentric wheel 13, the eccentric wheel 13 is located inside the auxiliary box 3, and a striking assembly is provided at the side end of the eccentric wheel 13. The striking assembly includes a pressing plate 18 installed at the side end of the eccentric wheel 13, and a moving rod 15 is installed at the side end of the pressing plate 18. The moving rod 15 is connected to the inside of the limiting plate 14, and the limiting plate 14 is installed inside the auxiliary box 3. The other end of the moving rod 15 is connected to a striking plate 16, and the striking plate 16 is located at the side end of the conveying pipe 8. A spring 17 is sleeved on the outside of the moving rod 15, and the eccentric wheel 1 3 rotates and contacts with the pressing plate 18. A driving assembly is installed inside the base 1. The driving assembly includes a storage box 19 installed inside the base 1. A second motor 20 is installed at the side end of the storage box 19. The output end of the second motor 20 is connected with a forward and reverse screw 21. The outer side of the forward and reverse screw 21 is threadedly connected with a moving seat 22. The bottom of the moving seat 22 is connected with a material sprinkling member 12. The moving seat 22 is symmetrically arranged. A guide rod 23 is connected to the inside of the moving seat 22. The guide rod 23 is arranged in parallel with the forward and reverse screw 21. When the first motor When the eccentric wheel 13 is in use, the output end of the first motor 6 drives the eccentric wheel 13 to rotate. After the eccentric wheel 13 rotates, it contacts the pressure plate 18. The pressure plate 18 drives the moving rod 15 to move inside the limit plate 14, so that the striking plate 16 at the end of the moving rod 15 can strike the conveying pipe 8, so that the fertilizer inside the conveying pipe 8 can fall stably, reducing the problem of fertilizer blocking inside the conveying pipe 8 and causing inconvenience in fertilization. When the eccentric wheel 13 continues to rotate and leaves the surface of the pressure plate 18, the spring 17 on the outside of the moving rod 15 rebounds and drives the pressure plate 18 to restore the initial position, which is convenient for reuse and improves the overall practicality. The second motor 20 inside the storage box 19 is opened, and the second motor 20 drives the forward and reverse screws 21 to rotate, so that the moving seat 22 can move through the cooperation of the guide rod 23, so that the position of the material sprinkling member 12 is moved, so that the whole is convenient to adjust according to the row spacing, so that the material sprinkling member 12 is convenient for spraying fertilizer, and the overall device is convenient to be effectively adjusted according to the required distance, thereby increasing the overall scope of application. Embodiment three:

[0021] In this embodiment, for the overall practicality, the auxiliary components are used to reduce the problem of increased costs caused by using different machines for Chinese medicine ditch fertilization and later fertilization. Figure 5 and Figure 8-Figure 10As shown, the bottom of the movable seat 22 is connected with an auxiliary component, which includes a protective frame 24 installed at the bottom of the movable seat 22, a rotating shaft 25 is arranged inside the protective frame 24, a first limiting frame 26 is arranged on one side of the rotating shaft 25, and a second limiting frame 28 is arranged on the other side of the rotating shaft 25. A trenching knife 27 is rotatably connected inside the first limiting frame 26, and an auxiliary wheel 29 is rotatably connected inside the second limiting frame 28. A limiting member 30 is arranged on the protective frame 24, and the movable seat 22 is convenient for driving the bottom protective frame 24 to move. When trenching and fertilization are required, the soil can be trenched by the trenching knife 27 inside the first limiting frame 26, and the trenching knife 27 is rotated by the movement of the device, so that the overall operation It is convenient, and the fertilization operation is carried out in cooperation with the sprinkler 12 under the movable seat 22, thereby improving the overall fertilization efficiency, making it more convenient for the later planting of traditional Chinese medicine, and improving the growth quality of traditional Chinese medicine. When fertilization is needed after the growth of traditional Chinese medicine, the second limit frame 28 can be rotated out by the rotating shaft 25, and the first limit frame 26 can be limited to the inside of the protective frame 24 by the limit member 30. At this time, the movable seat 22 is used to adjust the distance of the sprinkler 12, so that the sprinkler 12 is conveniently located on both sides of the traditional Chinese medicine plant. At this time, the auxiliary wheel 29 inside the second limit frame 28 is convenient to move inside the groove, thereby improving the overall practicality and reducing the problem of increased costs caused by using different machines for ditching and fertilizing traditional Chinese medicine and later fertilization.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing, comprising a base (1), a movable wheel (2) being installed under the base (1), an auxiliary box (3) being installed on the base (1), a material storage box (4) being installed on the auxiliary box (3), and a material feeding hopper (5) being installed on the material storage box (4); It is characterized in that Also includes: A first motor (6) is installed inside the auxiliary box (3); an output end of the first motor (6) is connected to a stirring member (7); the stirring member (7) is connected through the inside of the storage box (4); the bottom of the storage box (4) is connected to an adjustment component via a conveying pipe (8); the adjustment component comprises an adjustment cylinder (9) connected to the bottom of the conveying pipe (8); a rotating blade (10) is installed inside the adjustment cylinder (9); an output end of the rotating blade (10) is connected to the rotating shaft of the moving wheel (2) via a driving member (11); a material spreading member (12) is connected to the bottom of the adjustment cylinder (9) via a hose; fertilizer is uniformly conveyed by the rotation of the rotating blade (10) of the adjustment component.

2. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 1, characterized in that: The output end of the first motor (6) is connected to an eccentric wheel (13), the eccentric wheel (13) is located inside the auxiliary box (3), and a striking assembly is provided at a side end of the eccentric wheel (13), the striking assembly comprising a pressure plate (18) mounted on the side end of the eccentric wheel (13).

3. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 2, characterized in that: A moving rod (15) is installed at the side end of the pressure plate (18), and the moving rod (15) is connected to the inside of the limiting plate (14), and the limiting plate (14) is installed inside the auxiliary box (3).

4. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 3, characterized in that: The other end of the moving rod (15) is connected to a striking plate (16), and the striking plate (16) is located at the side end of the conveying pipe (8). A spring (17) is sleeved on the outside of the moving rod (15), and the eccentric wheel (13) contacts the pressure plate (18) after rotating.

5. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 1, characterized in that: A drive assembly is installed inside the base (1), the drive assembly comprising a storage box (19) installed inside the base (1), a second motor (20) is installed at a side end of the storage box (19), and a forward and reverse screw rod (21) is connected to an output end of the second motor (20).

6. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 5, characterized in that: The outer side of the forward and reverse screws (21) is threadedly connected to a moving seat (22), the bottom of the moving seat (22) is connected to a material sprinkling member (12), and the moving seat (22) is symmetrically arranged.

7. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 6, characterized in that: A guide rod (23) is connected and penetrates the interior of the movable seat (22), and the guide rod (23) is arranged in parallel with the forward and reverse screw rods (21).

8. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 6, characterized in that: The bottom of the movable seat (22) is connected to an auxiliary component, the auxiliary component comprising a protective frame (24) mounted on the bottom of the movable seat (22), a rotating shaft (25) being arranged inside the protective frame (24), and a first limiting frame (26) being mounted on one side of the rotating shaft (25).

9. The fertilizer applicator for Chinese medicinal herb planting with adjustable row spacing according to claim 8, characterized in that: A second limiting frame (28) is installed on the other side of the rotating shaft (25); a trenching knife (27) is rotatably connected inside the first limiting frame (26); an auxiliary wheel (29) is rotatably connected inside the second limiting frame (28); and a limiting member (30) is provided on the protective frame (24).

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