Active ditching mechanism
By combining the active ditching mechanism with the inner and outer ring soil-shoveling plates, the problems of high seed exposure rate and inconsistent sowing depth under wetland conditions are solved, enabling normal ditching and uniform sowing in wetland.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU NONGKEN AGRICULTURAL DEVELOPMENT CO LTD BAIMA LAKE BRANCH
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-19
AI Technical Summary
In wet and sludge conditions, existing dual-shaft rotary tillage and fertilization seeders have problems with high seed exposure rate and inability to control seeding depth. In particular, the annular furrowing blades become covered with mud clumps in wet and sludge conditions, making it impossible to furrow properly.
An active trenching mechanism is adopted, which uses an actively driven trenching roller in conjunction with inner and outer shovels. Driven by the gearbox output shaft, the trenching roller is continuously rotated, and the inner and outer shovels scrape off the adhering wet soil clods to ensure consistent trench depth.
It enabled normal ditching under wetland conditions, ensured consistent ditch depth, and achieved more uniform sowing through improved seed outlet design.
Smart Images
Figure CN224368348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to rapid welding technology for electric vehicle frame parts, specifically to an active groove pressing mechanism. Background Technology
[0002] In conditions of sludge-dampness (or wet-water conditions), which mainly refer to rice-wheat stubble fields with high moisture content or small amounts of water accumulation (water depth ≤ 2cm), the currently used dual-shaft rotary tillage, fertilization, and seeding machines mainly have the following problems:
[0003] (1) High seed exposure rate: The sowing adopts the free broadcasting method (the seeds fall onto the surface of the soil after cultivation through the seed broadcasting board), and the seeds are covered by the shallow rotary blade shaft at the rear (the seeds are mixed and stirred in the soil), resulting in a high seed exposure rate;
[0004] (2) Sowing depth cannot be controlled: Because the seeds are scattered on the surface after the front blade is rotary tilled, the seed covering depth is only achieved by rotating the shallow blades of the rear blade to mix the seeds in the soil. This seed covering method makes it impossible to control the consistency of sowing depth, resulting in a low germination rate.
[0005] Therefore, to change the above situation, row sowing can be used to effectively control the sowing depth and improve the emergence. Conventional row sowing machines, such as the compacted furrowing seeder disclosed in CN 118383109 A, can perform row sowing. This solution uses a ring-shaped furrowing blade to open the furrows. This solution is suitable for winter wheat areas in dry northern regions.
[0006] Due to the different land conditions in different regions, when a compacted furrowing and seeding machine disclosed in CN 118383109 A is applied to rotten and wet land, the annular furrowing blades become covered with mud clods, making it impossible to furrow properly.
[0007] Based on this, our company developed this utility model in order to meet the needs of normal ditching in wetlands. Summary of the Invention
[0008] This invention utilizes an active trenching mechanism. Through the design of an actively driven trenching roller in conjunction with inner and outer scraper plates, when applied to wetlands, the roller continues to rotate due to the drive of the gearbox output shaft when wet soil clods adhere to it. As the wet soil clods rotate to the corresponding inner and outer scraper plates, they are scraped off, ensuring normal trenching and resulting in relatively consistent trench depth.
[0009] To achieve the above objectives, the present invention adopts the following technical solution: an active grooving mechanism, comprising a frame, the frame including a left side plate, a right side plate, and a support frame with one end fixedly connected to the left side plate and the other end fixedly connected to the right side plate, the left end of the grooving roller being rotatably connected to the left side plate and the right end being rotatably connected to the right side plate, and the right end of the grooving roller being drivenly connected to a gearbox fixedly mounted on the support frame.
[0010] Based on the above scheme, as a preferred embodiment, the groove roller includes a roller body and several grooves that are evenly and spaced apart axially on the roller body. Specifically, the grooves are annular and the roller body is cylindrical.
[0011] Based on the above scheme, as a preferred embodiment, one end of the outer ring shovel plate bracket is fixed to the left side plate and the other end is fixed to the right side plate, with its length direction parallel to the axial direction of the grooving roller. Several outer ring shovel plates are fixedly installed on the outer ring shovel plate bracket, each outer ring shovel plate corresponding to one grooving section, and the width of the outer ring shovel plate is the same as the width of the grooving section. The ends of the outer ring shovel plates are fitted with the grooving sections with a clearance.
[0012] Based on the above scheme, as a preferred option, one end of the inner ring shovel plate bracket is fixed on the left side plate and the other end is fixed on the right side plate, and its length direction is parallel to the axial direction of the grooving roller. Several inner ring shovel plates are fixedly installed on the inner ring shovel plate bracket. Each inner ring shovel plate corresponds to a notch formed between the grooving part and the roller body, and the width of the inner ring shovel plate is slightly smaller than the width of the corresponding notch. The end of the inner ring shovel plate is fitted with the notch with a clearance.
[0013] Based on the above scheme, as a preferred embodiment, the gearbox has an input shaft for driving connection with the output shaft of the tractor. The output shaft of the gearbox is located on the side and is driven by a first drive shaft rotatably mounted on the right side plate through an intermediate connecting shaft. The output shaft and the intermediate connecting shaft, as well as the intermediate connecting shaft and the first drive shaft, are fixedly connected by Y-type joints. The first drive shaft is connected to the first drive shaft seat fixed on the right side plate through a bearing. The first drive shaft extends to the first protruding section on the outside of the right side plate and a first sprocket is fixedly installed.
[0014] Based on the above scheme, as a preferred embodiment, a second drive shaft seat is fixedly installed on the right side plate. A second drive shaft is rotatably mounted on the second drive shaft seat via bearings. A second main sprocket and a second auxiliary sprocket are fixedly installed on the second extended section of the second drive shaft located on the outer side of the right side plate. The second main sprocket and the second auxiliary sprocket are spaced apart axially in the second extended section. The diameter of the second main sprocket is larger than the diameter of the second auxiliary sprocket. The second main sprocket is connected to the first sprocket via chain drive.
[0015] Based on the above scheme, as a preferred option, the two ends of the grooving roller have a third drive shaft. The third drive shaft is rotatably connected to the third drive shaft seat fixed on the left side plate and the right side plate through bearings. The third drive shaft located at the right end of the grooving roller extends to the outside of the right side plate to form a third extension section. A third sprocket is fixedly installed on the third extension section. The third sprocket is connected to the second auxiliary sprocket through chain drive.
[0016] Based on the above scheme, as a preferred option, a seed box is fixedly installed on the frame. The seed box is connected to the seed discharge port through a seed conveying pipe. Each pressing groove section corresponds to a seed discharge port. Taking the location of the gearbox as the front as a reference, the seed discharge port is located behind the pressing groove roller. The seed discharge pipe includes a vertical pipe. The upper end of the vertical pipe is connected to the seed outlet of the seed box through a flexible hose. The seed discharge port is fixedly installed at the lower end of the vertical pipe. The upper end of the vertical pipe is fixed on a horizontal bar. The length direction of the horizontal bar is left and right. The cross-section of the seed discharge port in the left and right direction is triangular and includes an inclined plate and a vertical plate. The lower edge of the inclined plate and the lower edge of the vertical plate are spaced apart.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] By using an active-drive trenching roller in conjunction with inner and outer scraper plates, when wet soil clods stick to the trenching roller in wetland applications, the trenching roller continues to rotate due to the drive of the gearbox output shaft. When the wet soil clods sticking to the trenching roller rotate to the corresponding inner and outer scraper plates, they are scraped off by the inner and outer scraper plates, thus ensuring normal trenching and making the trench depth relatively consistent.
[0019] The end and side of the inner ring shovel plate are fitted with the notch with a clearance, so as not to interfere with the rotation of the grooving roller.
[0020] The outer ring shovel plate has a clearance fit with the grooving section, which does not interfere with the rotation of the grooving roller.
[0021] The seed outlet is flat. Seeds fall from the vertical tube, land on the inclined plate, bounce off the vertical plate, fall back onto the inclined plate, bounce off the vertical plate again, and repeat this process many times before falling through the gaps into the furrows pressed out by the pressing section. This sowing method is more uniform than that of the straight tube. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 yes Figure 1 A partial top view from direction A;
[0024] Figure 3 This is a schematic diagram of the transmission between the gearbox and the groove roller; Detailed Implementation
[0025] The present invention will be further described below through embodiments, but the scope of the present invention is not limited thereto.
[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0027] like Figure 1-3 As shown, the active grooving mechanism includes a frame, which includes a left side plate 1, a right side plate 2, and a support frame 3 with one end fixedly connected to the left side plate and the other end fixedly connected to the right side plate. The left end of the grooving roller is rotatably connected to the left side plate, and the right end is rotatably connected to the right side plate. The right end of the grooving roller is driven by a gearbox (reducer) 4 fixedly mounted on the support frame.
[0028] The trenching roller includes a roller body 5 and several trench sections 6 evenly and spaced apart axially on the roller body to ensure consistent row spacing during sowing. The trench sections can be integral with the roller body or separate structures welded together. Specifically, the trench sections are annular, and the roller body is cylindrical.
[0029] The width of the pressing furrow is usually 8-12cm, typically 10cm, but can be adjusted according to specific sowing requirements. The outer diameter (radius) of the roller is 4-5cm smaller than the outer diameter (radius) of the pressing furrow to ensure a furrow depth of 2-4cm.
[0030] Since this solution is primarily designed for use on wet and sludge-prone areas, it can also be applied to sandy areas. During the ditching process, soil tends to stick to the ditching section and the roller, making it difficult for the soil to detach automatically. Therefore, to prevent the wet and sludge-prone soil from sticking to the ditching section and the roller, an outer ring soil-shoveling plate support 7 (square steel) and an inner ring soil-shoveling plate support 8 (square steel) are designed. Several outer ring soil-shoveling plates 9 are fixedly installed on the outer ring soil-shoveling plate support. Each outer ring soil-shoveling plate corresponds to one ditching section, and the width of the outer ring soil-shoveling plate is the same as the width of the ditching section. The ends of the outer ring soil-shoveling plates are fitted with a gap to remove as much soil as possible from the ditching section without interfering with the rotation of the ditching roller. One end of the outer ring soil-shoveling plate support is fixed to the left side plate, and the other end is fixed to the right side plate, with its length direction parallel to the axial direction of the ditching roller.
[0031] Correspondingly, several inner ring shovel plates 10 are fixedly installed on the inner ring shovel plate bracket. Each inner ring shovel plate corresponds to a notch 11 formed between the pressing groove and the roller body. The width of the inner ring shovel plate is slightly smaller than the width of the corresponding notch. The ends and sides of the inner ring shovel plate are fitted with the notch with a clearance. This allows for the removal of as much soil as possible from the notch without interfering with the rotation of the pressing roller. One end of the inner ring shovel plate bracket is fixed to the left side plate, and the other end is fixed to the right side plate. Its length direction is parallel to the axial direction of the pressing roller.
[0032] The gearbox has an input shaft for drive connection with the output shaft of the tractor. The output shaft of the gearbox is located on the side and is drively connected to a first drive shaft 12 rotatably mounted on the right side plate via an intermediate connecting shaft 13. The output shaft and the intermediate connecting shaft, as well as the intermediate connecting shaft and the first drive shaft, are fixedly connected by Y-type joints 14. The first drive shaft is connected to a first drive shaft seat 15 fixed on the right side plate via a bearing 16 to achieve the rotational relationship between the first drive shaft and the right side plate.
[0033] The first drive shaft extends out to the first protruding section 17 on the outside of the right side plate and the first sprocket 18 is fixedly installed.
[0034] A second drive shaft seat 19 is fixedly installed on the right side plate. A second drive shaft 20 is rotatably mounted on the second drive shaft seat via bearings. A second main sprocket 21 and a second auxiliary sprocket 22 are fixedly installed on the second extended section of the second drive shaft located on the outer side of the right side plate. The second main sprocket and the second auxiliary sprocket are spaced apart axially in the second extended section. The diameter of the second main sprocket is larger than the diameter of the second auxiliary sprocket. The second main sprocket is connected to the first sprocket via chain drive.
[0035] The grooving roller has a third drive shaft 23 at both ends. The third drive shaft is rotatably connected to the third drive shaft seat 24 fixed on the left and right side plates through bearings. The third drive shaft located at the right end of the grooving roller extends to the outside of the right side plate to form a third extension section 25. A third sprocket 26 is fixedly installed on the third extension section. The third sprocket is connected to the second auxiliary sprocket through chain drive.
[0036] A seed box 27 is fixedly installed on the frame. The seed box is connected to the seed discharge port through a seed conveying pipe. Each pressing groove corresponds to a seed discharge port. Taking the location of the gearbox as the front as a reference, the seed discharge port is located behind the pressing groove roller. The seed discharge pipe includes a vertical pipe 28. The upper end of the vertical pipe is connected to the seed outlet of the seed box through a flexible hose 29. The seed discharge port is fixedly installed at the lower end of the vertical pipe. The upper end of the vertical pipe is fixed to a crossbar 30 (square steel, with both ends fixedly connected to the left and right side plates respectively). The length direction of the crossbar is left and right. The cross section of the seed discharge port in the left and right direction is triangular, including an inclined plate 31 and a vertical plate 32. The lower edge of the inclined plate and the lower edge of the vertical plate are spaced apart. The outlet of the seed discharge port is flat. The seeds fall from the vertical pipe, land on the inclined plate, bounce and hit the vertical plate, fall back to the inclined plate, bounce and hit again, and repeat this process many times before falling from the gap and into the groove pressed out by the pressing groove. In this way, the sowing is equivalent to a straight pipe, which is more uniform.
[0037] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.
Claims
1. An active trenching mechanism, comprising a frame, the frame including a left side plate, a right side plate, and a support frame with one end fixedly connected to the left side plate and the other end fixedly connected to the right side plate, characterized in that, The left end of the grooving roller is rotatably connected to the left side plate, and the right end is rotatably connected to the right side plate. The right end of the grooving roller is driven and fixedly mounted on a gearbox on a support frame. The gearbox has an input shaft for drive connection with the output shaft of a tractor. The grooving roller includes a roller body and several grooving sections evenly and spaced along the axial direction on the roller body. The grooving sections are specifically annular. The roller body is cylindrical. One end of the outer ring shovel plate bracket is fixed to the left side plate, and the other end is fixed to the right side plate. Its length direction is parallel to the axial direction of the grooving roller. Several outer ring shovel plates are fixedly mounted on the outer ring shovel plate bracket. Each outer ring shovel plate corresponds to one pressing trough, and the width of the outer ring shovel plate is the same as the width of the pressing trough. The ends of the outer ring shovel plates are fitted with a clearance fit to the pressing trough. One end of the inner ring shovel plate bracket is fixed to the left side plate, and the other end is fixed to the right side plate. Its length direction is parallel to the axial direction of the pressing roller. Several inner ring shovel plates are fixedly installed on the inner ring shovel plate bracket. Each inner ring shovel plate corresponds to a notch formed between the pressing trough and the roller body, and the width of the inner ring shovel plate is slightly smaller than the width of the corresponding notch. The ends of the inner ring shovel plates are fitted with a clearance fit to the notch.
2. The active grooving mechanism according to claim 1, wherein The output shaft of the gearbox is located on the side and is connected to the first drive shaft rotatably mounted on the right side plate via an intermediate connecting shaft. The output shaft and the intermediate connecting shaft, as well as the intermediate connecting shaft and the first drive shaft, are fixedly connected via Y-type joints. The first drive shaft is connected to the first drive shaft seat fixed on the right side plate via a bearing. The first drive shaft extends to the first protruding section on the outside of the right side plate and a first sprocket is fixedly installed.
3. The active grooving mechanism according to claim 2, wherein A second drive shaft seat is fixedly installed on the right side plate. A second drive shaft is rotatably mounted on the second drive shaft seat via bearings. A second main sprocket and a second auxiliary sprocket are fixedly installed on the second extended section of the second drive shaft located on the outer side of the right side plate. The second main sprocket and the second auxiliary sprocket are spaced apart axially in the second extended section. The diameter of the second main sprocket is larger than the diameter of the second auxiliary sprocket. The second main sprocket is connected to the first sprocket via chain drive.
4. The active grooving mechanism according to claim 3, wherein The grooving roller has a third drive shaft at both ends. The third drive shaft is rotatably connected to the third drive shaft seat fixed on the left and right side plates through bearings. The third drive shaft located at the right end of the grooving roller extends to the outside of the right side plate to form a third extension section. A third sprocket is fixedly installed on the third extension section. The third sprocket is connected to the second auxiliary sprocket through chain drive.
5. The active grooving mechanism according to claim 1, wherein A seed box is fixedly installed on the frame. The seed box is connected to the seed discharge port through a seed conveying pipe. Each pressing groove corresponds to a seed discharge port. Taking the location of the gearbox as the front as a reference, the seed discharge port is located behind the pressing groove roller. The seed discharge pipe includes a vertical pipe. The upper end of the vertical pipe is connected to the seed outlet of the seed box through a flexible hose. The seed discharge port is fixedly installed at the lower end of the vertical pipe. The upper end of the vertical pipe is fixed on a horizontal bar. The length direction of the horizontal bar is left and right. The cross-section of the seed discharge port in the left and right direction is triangular and includes an inclined plate and a vertical plate. The lower edge of the inclined plate and the lower edge of the vertical plate are spaced apart.