Tobacco leaf pit digging and mouth fertilizer applying all-in-one machine

By designing an integrated machine for digging holes and applying fertilizer to tobacco leaves, and utilizing a mechanical control structure consisting of a duckbill box, opening and closing plate, L-shaped rod, and tension spring, the machine integrates hole digging and fertilization, solving the problems of high labor intensity, low efficiency, and fertilizer waste in existing technologies. It achieves precise fertilization and quantitative supply, improving operational efficiency and fertilizer utilization.

CN224205718UActive Publication Date: 2026-05-08YANBIAN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANBIAN UNIV
Filing Date
2025-06-11
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing technologies involve high labor intensity and low efficiency in the process of digging holes and applying fertilizer for tobacco leaves, and the amount of fertilizer applied is difficult to control, which can easily lead to fertilizer waste and soil pollution. Segmented mechanical equipment requires multiple trips to the field, which consumes time and energy and damages the soil structure.

Method used

A machine integrating digging holes and applying fertilizer to tobacco leaves was designed. It adopts a mechanical control structure consisting of a duckbill box, an opening and closing plate, an L-shaped rod, and a tension spring. Combined with the triggering of the fixed plate protrusion, it realizes the integration of hole digging and fertilization, ensuring precise fertilization and quantitative supply.

Benefits of technology

This allows for the simultaneous completion of hole digging and fertilization, reducing time and labor costs, ensuring stable and complete fertilization, improving fertilizer utilization, and avoiding soil pollution and waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a tobacco leaf pit digging and mouth fertilizer applying all-in-one machine, and belongs to the field of tobacco leaf planting, the tobacco leaf pit digging and mouth fertilizer applying all-in-one machine comprises two installation frames and a traction rod, the two installation frames are both rotatably connected with one side of the traction rod, the interiors of the installation frames are fixedly connected with fixed wheels, and one side of each fixed wheel is rotatably connected with a rotating disc. The duckbilled box is matched with the opening and closing plate, the L-shaped rod and the tension spring to form a mechanical control structure, precise fertilization is achieved, in the initial state, the tension spring is stretched to generate elastic tension, the L-shaped rod is kept stable, the opening and closing plate is driven to be closed, and fertilizer is prevented from being scattered, and when the duckbilled box rotates to the fixing plate along with the rotating disc, a protruding block on the plate makes contact with the L-shaped rod and exerts pushing force to overcome the elastic force of the tension spring; the L-shaped rod is driven to rotate around the hinge point, the opening and closing plate is synchronously driven to be opened, the fertilizer in the duckbilled box is immediately applied into a dug pit, the purpose of digging the pit and applying the fertilizer at the same time can be achieved by opening and closing the opening and closing of the duckbilled box, and time and labor cost are saved.
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Description

Technical Field

[0001] This utility model relates to the field of tobacco planting, and more specifically, to an integrated machine for digging holes and applying fertilizer to tobacco plants. Background Technology

[0002] In tobacco cultivation, hole digging and fertilization are crucial steps in ensuring the quality of tobacco growth. Traditional methods typically involve manual labor or segmented mechanical equipment to complete these two processes: manual hole digging and fertilization are not only labor-intensive and inefficient, but also difficult to control the amount of fertilizer applied, easily leading to fertilizer waste and soil pollution; while segmented mechanical equipment requires the separate use of hole diggers and fertilizer applicators, necessitating multiple trips to the field, which not only consumes a lot of time and energy, but also causes repeated compaction of the tobacco field soil, damaging the soil structure. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an integrated machine for digging holes and applying fertilizer in tobacco leaves, which can realize the integrated functions of digging holes and applying fertilizer.

[0005] 2. Technical Solution

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] The integrated machine for digging holes and applying fertilizer to tobacco leaves includes two mounting frames and a traction rod. Both mounting frames are rotatably connected to one side of the traction rod via universal joints. Fixed wheels are fixedly connected inside each mounting frame, and these fixed wheels are rotatably connected to a turntable via bearings. A fixed plate is fixedly connected to the side of each mounting frame away from the fixed wheels. Multiple duckbill boxes are fixedly connected to the outside of the turntable, arranged in an equidistant circular array on the outer wall of the turntable. An opening / closing plate is rotatably connected to one side of each duckbill box, and an L-shaped rod is fixedly connected inside the opening / closing plate. Multiple connecting pipes are fixedly connected to the inner wall of the turntable, arranged in an equidistant circular array and communicating with the duckbill boxes. A collection cover is fixedly connected above each connecting pipe. A reinforcing rod is fixedly connected to the outside of each fixed wheel, and a fertilizer box is fixedly connected above the reinforcing rod. A discharge pipe is fixedly connected below the fertilizer box, and the lower end of the discharge pipe passes through the fixed wheel and is located inside the turntable.

[0008] Furthermore, the L-shaped rod is rotatably connected to the outer wall of the duckbill box and the turntable respectively; a tension spring is sleeved on the outer wall of the L-shaped rod, and the end of the tension spring away from the L-shaped rod is rotatably connected to one side of the turntable; a protrusion for triggering the rotation of the L-shaped rod is fixedly connected to the side of the fixing plate near the turntable.

[0009] Furthermore, the connecting pipe is connected to the duckbill box; the collecting cover is funnel-shaped with a notch on one side to avoid secondary compression of the stress plate, and the opening end of the collecting cover faces the mounting pipe.

[0010] Furthermore, an installation tube is slidably connected to the lower end of the feeding tube, and the installation tube is located directly above the collecting cover; a sliding cover is slidably connected to the lower part inside the installation tube, and a spring is fixedly connected to the side of the sliding cover outside the installation tube, with one end of the spring fixedly connected to the outer wall of the installation tube; a force plate is fixedly connected to the lower part of the sliding cover, and the force plate is used to trigger the sliding cover to slide when the turntable rotates.

[0011] Furthermore, the drawbar is used to connect to agricultural machinery such as tractors.

[0012] Furthermore, the lid of the fertilizer box is equipped with a buckle to ensure the fertilizer box is airtight.

[0013] Furthermore, the duckbill box and the turntable are secured together by screws.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) In this solution, the duckbill box, together with the opening and closing plate, L-shaped rod and tension spring, constitutes a mechanical control structure to achieve precise fertilization. In the initial state, the tension spring is stretched to generate elastic tension, which keeps the L-shaped rod stable and drives the opening and closing plate to close, preventing fertilizer from spilling. When the duckbill box rotates with the turntable to the fixed plate, the protrusion on the plate contacts the L-shaped rod and applies a pushing force to overcome the tension spring force, drive the L-shaped rod to rotate around the hinge point, and simultaneously drive the opening and closing plate to open. The fertilizer in the duckbill box is then applied into the dug pit. The opening and closing of the duckbill opens the fertilizer application port to achieve the purpose of digging the pit and applying fertilizer at the same time, which saves a lot of time and labor costs.

[0017] (2) In this scheme, the mechanical control structure of the duckbill box, the opening and closing plate, the L-shaped rod, and the tension spring, combined with the fixed plate protrusion to trigger opening and closing, ensures stable fertilization without leakage; at the same time, the quantitative supply device composed of the sliding cover, the spring and the force plate can control the amount of fertilizer added, with a small error range, effectively improving the fertilizer utilization rate and avoiding waste. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram showing the connection relationship between the turntable, the L-shaped rod, and the tension spring in this utility model;

[0020] Figure 3This is a schematic diagram showing the connection relationship between the duckbill box, the opening and closing plate, and the L-shaped rod in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the turntable in this utility model;

[0022] Figure 5 for Figure 4 Enlarged structural diagram of region A in the middle;

[0023] Figure 6 for Figure 4 A magnified structural diagram of region B in the middle;

[0024] Figure 7 This is a schematic diagram showing the connection relationship between the sliding cover, the mounting plate, and the spring in this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Mounting frame; 10. Traction rod; 11. Fixed wheel; 12. Turntable; 13. Fixing plate; 14. Protrusion; 15. Duckbill box; 16. Opening plate; 17. L-shaped rod; 18. Tension spring; 19. Connecting pipe; 2. Collection cover; 21. Fertilizer bin; 22. Reinforcing rod; 23. Discharge pipe; 24. Mounting pipe; 25. Sliding cover; 26. Force plate; 27. Spring. Detailed Implementation

[0027] The technical solution 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. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Example 1:

[0031] Please see Figures 1-7 The integrated machine for digging holes and applying fertilizer to tobacco leaves includes two mounting frames 1 and one traction rod 10. Both mounting frames 1 are rotatably connected to one side of the traction rod 10. Fixed wheels 11 are fixedly connected inside the mounting frames 1. A turntable 12 is rotatably connected to one side of the fixed wheels 11. A fixed plate 13 is fixedly connected to the side of the mounting frames 1 away from the fixed wheels 11. Eight duckbill boxes 15 are fixedly connected to the outside of the turntable 12. The eight duckbill boxes 15 are arranged in an equidistant circular array on the outer wall of the turntable 12. An opening and closing plate 16 is rotatably connected to one side of each of the eight duckbill boxes 15. An L-shaped rod 17 is fixedly connected inside the opening and closing plate 16. The L-shaped rod 17 is rotatably connected to the duckbill boxes 15 and to the outer wall of the turntable 12. A tension spring 18 is rotatably connected to the outer wall of the L-shaped rod 17. The end of the tension spring 18 away from the L-shaped rod 17 is rotatably connected to one side of the turntable 12. A protrusion 14 is fixedly connected to one side of the fixed plate 13.

[0032] In this embodiment, the mechanical control structure of the duckbill box 15, together with the opening and closing plate 16, the L-shaped rod 17, and the tension spring 18, can accurately open and close when passing the protrusion 14 on the fixed plate 13. In the initial state, the tension spring 18 is in a stretched state, relying on its own elastic tension to keep the L-shaped rod 17 stable, thereby driving the opening and closing plate 16 to close, preventing the fertilizer in the duckbill box 15 from spilling during transportation. When the duckbill box 15 rotates with the turntable 12 to the fixed plate 13 near the mounting bracket 1, the protrusion 14 on one side of the fixed plate 13 begins to play its role. The protrusion 14 contacts the L-shaped rod 17 and applies a pushing force. This pushing force overcomes the elasticity of the tension spring 18, causing the L-shaped rod 17 to rotate around its hinge point with the turntable 12. The rotation of the L-shaped rod 17 drives the opening and closing plate 16 fixed to it to rotate synchronously, thereby opening the opening and closing plate 16 and exposing the inside of the duckbill box 15. At this time, the fertilizer in the duckbill box 15 can be smoothly placed into the dug pit.

[0033] As the turntable 12 continues to rotate, the duckbill box 15 gradually moves away from the fixed plate 13. The protrusion 14 disengages from the L-shaped rod 17. After losing external force, the tension spring 18 quickly contracts and resets, using elastic tension to pull the L-shaped rod 17 to rotate in the opposite direction, causing the opening and closing plate 16 to close again, completing one cycle of fertilization. Combined with the fertilizer box 21 discharge pipe 23 and the sliding cover 25 and spring 27 quantitative supply device in the installation pipe 24, precise control of fertilizer application can be achieved, effectively avoiding fertilizer waste.

[0034] Example 2:

[0035] Please see Figures 1-7 The integrated machine for digging holes and applying fertilizer to tobacco leaves has eight connecting pipes 19 fixedly connected to the inner wall of the turntable 12. The eight connecting pipes 19 are arranged in an equidistant circular array on the inner wall of the turntable 12. The eight connecting pipes 19 are respectively connected to eight duckbill boxes 15. A collection cover 2 is fixedly connected above each of the eight connecting pipes 19. A reinforcing rod 22 is fixedly connected to the outside of the fixed wheel 11. A fertilizer box 21 is fixedly connected above the reinforcing rod 22. A feeding pipe 23 is fixedly connected to the bottom of the fertilizer box 21. The lower end of the feeding pipe 23 passes through the fixed wheel 11 and is located inside the turntable 12. An installation pipe 24 is slidably connected to the lower end of the feeding pipe 23. The installation pipe 24 is located above the collection cover 2. A sliding cover 25 is slidably connected to the lower part of the installation pipe 24. A spring 27 is fixedly connected to the side of the sliding cover 25 outside the installation pipe 24. One end of the spring 27 is fixedly connected to the outer wall of the installation pipe 24. A force plate 26 is fixedly connected to the lower part of the sliding cover 25.

[0036] In this embodiment, when the turntable 12 starts to rotate, the eight connecting pipes 19 fixed on its inner wall and the collection cover 2 above it rotate synchronously. The collection cover 2 mainly undertakes the functions of receiving and guiding in the fertilizer transmission system. Its upper part is always kept open, ready to receive fertilizer from the feed pipe 23 and the installation pipe 24 at any time.

[0037] At the same time, the sliding cover 25 below the installation tube 24 is initially closed by the elastic force of the spring 27 to prevent fertilizer from spilling out prematurely.

[0038] When the collecting cover 2 rotates to a position below the feeding pipe 23 and the mounting pipe 24, the force plate 26 will slide horizontally after being squeezed by the collecting cover 2, thus opening the feeding channel. After the feeding channel is opened, the fertilizer in the fertilizer box 21 falls precisely into the collecting cover 2 through the feeding pipe 23 and the mounting pipe 24. Then, it is diverted to the corresponding duckbill box 15 through the connecting pipe 19 connected to the collecting cover 2. After one fertilizer feeding is completed, as the turntable 12 continues to rotate, the force plate 26 leaves the trigger area, and the sliding cover 25, which has lost the external force, quickly resets under the tension of the spring 27, sliding horizontally to close the feeding port again, preventing the fertilizer from falling further. The collecting cover 2, along with the rotation of the turntable 12, transports the fertilizer to the subsequent fertilization process, waiting for the next fertilizer to be received. This cycle repeats, realizing continuous, stable and quantitative fertilizer feeding and dispensing operations.

[0039] Working principle: The tobacco leaf digging and fertilizing machine is connected to a tractor or other traction power equipment via the traction rod 10. When the traction equipment is started, the whole machine begins to move in the tobacco field. At this time, the fixed wheel 11 contacts the ground and rolls, driving the turntable 12 connected to it to rotate synchronously.

[0040] Before operation, the fertilizer is filled into the fertilizer box 21. The sliding cover 25 inside the installation tube 24 slides horizontally to the closed discharge port position under the elastic force of the spring 27 to prevent the fertilizer from falling prematurely. At the same time, the opening and closing plate 16 of the duckbill box 15 is kept closed under the tension of the tension spring 18 to prevent the fertilizer from spilling during transportation.

[0041] When the turntable 12 rotates, the collection cover 2 fixed on its inner wall rotates accordingly. When the collection cover 2 rotates to the position aligned with the feed pipe 23 and the mounting pipe 24, one side of the collection cover 2 is used to squeeze and push the force plate 26 below the sliding cover 25.

[0042] After the force plate 26 is subjected to force, it overcomes the elastic force of the spring 27 and drives the sliding cover 25 to slide horizontally along the inside of the mounting tube 24, opening the feeding channel. The fertilizer in the fertilizer box 21 falls into the collection cover 2 through the feeding tube 23 and the mounting tube 24, and then flows to the corresponding duckbill box 15 through the connecting tube 19.

[0043] After the fertilizer loading is completed, the collection cover 2 continues to rotate with the turntable 12, disengages from the force plate 26, and the spring 27 pulls the sliding cover 25 to reset and re-close the discharge port.

[0044] The fertilizer-filled duckbill box 15 continues to rotate with the turntable 12. When it moves to the fixed plate 13 on the mounting frame 1, the protrusion 14 on the fixed plate 13 contacts the L-shaped rod 17 and applies a pushing force.

[0045] The thrust overcomes the elastic force of the tension spring 18, causing the L-shaped rod 17 to rotate around its hinge point with the turntable 12, which in turn drives the opening and closing plate 16 to rotate and open synchronously, exposing the inside of the duckbill box 15, and allowing the fertilizer to be successfully applied into the prepared pit.

[0046] After the duckbill box 15 leaves the fixed plate 13, the protrusion 14 disengages from the L-shaped rod 17, the tension spring 18 quickly contracts and resets, pulling the L-shaped rod 17 to rotate in the opposite direction, causing the opening and closing plate 16 to close again, completing one fertilization action. As the turntable 12 continues to rotate, the duckbill box 15 repeats the above fertilizer loading, transportation, fertilization and reset process, realizing continuous and stable pit digging and fertilization operations.

[0047] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A tobacco leaf planting and fertilization integrated machine, comprising two mounting frames (1) and a traction rod (10), characterized in that: Both mounting brackets (1) are rotatably connected to one side of the traction rod (10). A fixed wheel (11) is fixedly connected inside the mounting bracket (1). A turntable (12) is rotatably connected to one side of the fixed wheel (11). A fixed plate (13) is fixedly connected to the side of the mounting bracket (1) away from the fixed wheel (11). Eight duckbill boxes (15) are fixedly connected to the outside of the turntable (12). The eight duckbill boxes (15) are arranged in an equidistant circular array on the outer wall of the turntable (12). An opening and closing plate (16) is rotatably connected to one side of each of the eight duckbill boxes (15). An L-shaped rod (17) is fixedly connected inside the opening and closing plate (16).

2. The integrated machine for digging holes and applying fertilizer in tobacco leaves according to claim 1, characterized in that: The L-shaped rod (17) and the duckbill box (15) are rotatably connected. The L-shaped rod (17) and the outer wall of the turntable (12) are rotatably connected. The outer wall of the L-shaped rod (17) is rotatably connected to a tension spring (18). The end of the tension spring (18) away from the L-shaped rod (17) is rotatably connected to one side of the turntable (12).

3. The integrated machine for digging holes and applying fertilizer to tobacco leaves according to claim 2, characterized in that: A protrusion (14) is fixedly connected to one side of the fixing plate (13).

4. The integrated machine for digging holes and applying fertilizer to tobacco leaves according to claim 1, characterized in that: The inner wall of the turntable (12) is fixedly connected with eight connecting pipes (19). The eight connecting pipes (19) are arranged in an equidistant circular array on the inner wall of the turntable (12). The eight connecting pipes (19) are respectively connected to eight duckbill boxes (15). A collection cover (2) is fixedly connected above each of the eight connecting pipes (19).

5. The integrated machine for digging holes and applying fertilizer to tobacco leaves according to claim 4, characterized in that: A reinforcing rod (22) is fixedly connected to the outside of the fixed wheel (11). A fertilizer box (21) is fixedly connected above the reinforcing rod (22). A feeding pipe (23) is fixedly connected to the bottom of the fertilizer box (21). The lower end of the feeding pipe (23) passes through the fixed wheel (11) and is located inside the turntable (12).

6. The integrated machine for digging holes and applying fertilizer to tobacco leaves according to claim 5, characterized in that: The lower end of the feeding pipe (23) is slidably connected to the mounting pipe (24), the mounting pipe (24) is located above the collecting cover (2), the lower part of the mounting pipe (24) is slidably connected to the sliding cover (25), and the side of the sliding cover (25) located outside the mounting pipe (24) is fixedly connected to the spring (27), one end of the spring (27) is fixedly connected to the outer wall of the mounting pipe (24).

7. The integrated machine for digging holes and applying fertilizer to tobacco leaves according to claim 6, characterized in that: A force-bearing plate (26) is fixedly connected to the lower part of the sliding cover (25).