Seed bed leveling mechanism
By combining a soft, elastic soil leveling plate with rotary tillers and furrow openers, the problem of low fertilizer utilization and poor soil permeability and aeration in heavy, clayey soils is solved by combining seeders, achieving flexible leveling and a good seed growth environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川耀农农业装备有限公司
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-12
AI Technical Summary
In existing combined seeders, when the soil moisture content is high and the soil is heavy, the fertilizer is rotated deep into the soil by the rotary tiller blades, which prevents the fertilizer from being fully absorbed by the seeds, affecting germination and seedling emergence. At the same time, the scraper blades exert hard pressure on the soil during the soil leveling process, affecting water permeability and aeration.
The soft, elastic soil leveling board is made of rubber material and is combined with rotary tillers and furrow openers. The disc rake cuts the soil and performs rotary tillage. The rotary tiller breaks up the soil, the furrow opener opens furrows, and the soft, elastic soil leveling board smooths the soil, avoiding hard compression and ensuring soil permeability and aeration.
It effectively avoids soil compaction and clumping, ensures soil permeability and aeration, provides good conditions for seed growth, and achieves flexible leveling by adjusting the structure to adapt to different cultivation conditions.
Smart Images

Figure CN224218832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a seedbed leveling mechanism. Background Technology
[0002] Wheat and rapeseed are important winter crops in the Yangtze River Basin. Achieving dual-crop planting for rapeseed and wheat can effectively improve machinery utilization. To enhance the production efficiency and utilization rate of rapeseed and wheat, combined seeders are widely used in the planting process for both crops, simultaneously performing rotary tillage, furrowing, sowing, and fertilization. However, in actual production, under conditions of high soil moisture content and heavy clay, fertilizer is often driven deep into the soil by the rotary tillage blades, preventing sufficient seed absorption and affecting germination and emergence, resulting in weak seedlings.
[0003] Existing technology has proposed a combined seeder for applying base fertilizer and top dressing fertilizer to both oilseed wheat and wheat (such as the patent with publication number CN119096737A), which has solved the aforementioned problems. However, because it is set to use a scraper to level the soil, in actual use, in order to ensure the leveling effect, the scraper needs to be close to the ground. Therefore, when leveling the soil, the scraper will apply pressure to the soil, resulting in the soil being too compacted, which affects the water permeability and aeration performance of the soil layer and affects seed growth. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing technology and provide a seedbed leveling mechanism. This mechanism uses a disc rake to cut the soil, and a rotary tiller to break up and disperse the soil. Simultaneously, furrow openers on both sides create furrows along the cutting path of the disc rake. The rake then combs the soil after rotary tillage, flattening large clods of soil and rice stubble. A soft, elastic soil leveling board smooths the broken-up soil. Due to its soft and elastic properties, the soft, elastic soil leveling board avoids hard compression of the soil, preventing compaction and clumping, thus ensuring good water permeability and aeration, providing favorable conditions for seed growth and development.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A seedbed leveling mechanism includes a soft, elastic soil leveling plate, which is disposed between two furrow openers, and the inner side of the soft, elastic soil leveling plate is also provided with a plurality of rotary tillage blades.
[0007] Furthermore, the soft, elastic soil slab is made of rubber material.
[0008] Furthermore, the soft elastic soil-setting board is connected to the rotating shaft on the seeder via an adjusting plate;
[0009] One end of the adjusting plate is rotatably connected between the two trenchers via a connecting shaft, and the soft elastic soil leveling plate is fixedly installed at the other end of the adjusting plate; the back of the adjusting plate is rotatably connected via a connecting rod, and the two ends of the connecting rod are respectively hinged to the adjusting plate and the rotating shaft.
[0010] Furthermore, one end of the connecting rod is connected to the adjusting plate via two lugs, and a sliding sleeve is rotatably connected between the two lugs. The sliding sleeve is slidably mounted on the outside of the connecting rod and is connected to the connecting rod via a connector.
[0011] Furthermore, the connecting rod is provided with a plurality of connecting holes evenly distributed along the axial direction, and the connecting holes penetrate the connecting rod radially. Bolts are provided in two adjacent connecting holes located on both sides of the sliding sleeve.
[0012] Furthermore, multiple rakes are connected to the adjusting plate, and the rakes are positioned below the soft elastic soil leveling plate.
[0013] Furthermore, the rake is U-shaped and connected to the adjusting plate via a pressure plate. The pressure plate has a C-shaped structure and is provided with pressure holes that are adapted to the rake. The pressure plate fixes the rake to the adjusting plate through the pressure holes, and the pressure plate is connected to the adjusting plate via bolts.
[0014] Furthermore, the adjusting plate is provided with a first connecting plate at both ends, and the soft elastic soil leveling plate is provided with a second connecting plate at both ends. The soft elastic soil leveling plate is connected to the adjusting plate through the second connecting plate, bolts, and the second connecting plate.
[0015] Furthermore, a disc rake is provided in front of the trencher.
[0016] The beneficial effects of this utility model are:
[0017] 1) This utility model uses a disc rake to cut the soil and a rotary tiller to break up and disperse the soil. At the same time, the furrow openers on both sides open furrows on both sides of the seedbed along the cutting trajectory of the disc rake. The rake grab performs a sorting operation on the soil after rotary tillage, sorting and pressing down large clods of soil, rice stubble, etc. The soft and elastic soil leveling board scrapes the dispersed soil and flattens it. The soft and elastic soil leveling board avoids hard compression of the soil due to its soft and elastic properties, thus preventing soil compaction and clumping, thereby ensuring the soil's permeability and aeration, and providing good conditions for seed growth and development.
[0018] 2) The leveling angle of the scraper can be finely adjusted by adjusting the relative position of the connecting rod and the sliding sleeve to adapt to different leveling conditions according to different cultivation situations.
[0019] 3) The rake grab is detachably fixed by the pressure plate and the adjustment plate, making it easy to disassemble and replace the rake grab. Attached Figure Description
[0020] Figure 1 This is a perspective view of the seed bed leveling mechanism in an embodiment of this utility model;
[0021] Figure 2 A 3D view of the seedbed leveling mechanism to conceal the soft, elastic soil leveling board;
[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle section;
[0023] In the diagram, 1. Soft elastic soil leveling board; 2. Trench opener; 3. Adjusting plate; 4. Rotating shaft; 5. Connecting rod; 6. Ear plate; 7. Sliding sleeve; 8. Disc rake; 9. Connecting hole; 10. Rake grab; 11. Pressing plate; 12. First connecting plate; 13. Second connecting plate. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and 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.
[0025] See Figures 1-3 This utility model provides a technical solution:
[0026] Example:
[0027] like Figures 1-3 As shown, a seedbed leveling mechanism includes a soft elastic soil leveling plate 1 made of rubber material, the soft elastic soil leveling plate 1 being disposed between two furrow openers 2, a disc rake 8 being disposed in front of the furrow openers 2, and a plurality of rotary tillage blades being disposed on the inner side of the soft elastic soil leveling plate 1.
[0028] The soft elastic soil-setting plate 1 is connected to the rotating shaft 4 on the seeder via the adjusting plate 3;
[0029] One end of the adjusting plate 3 is rotatably connected between the two trenchers 2 via a connecting shaft, and the soft elastic soil leveling plate 1 is fixedly installed at the other end of the adjusting plate 3; the back of the adjusting plate 3 is rotatably connected via a connecting rod 5, and the two ends of the connecting rod 5 are respectively hinged to the adjusting plate 3 and the rotating shaft 4.
[0030] One end of the connecting rod 5 is connected to the adjusting plate 3 through two ear plates 6. A sliding sleeve 7 is rotatably connected between the two ear plates 6. The sliding sleeve 7 is located outside the connecting rod 5 and is connected to the connecting rod 5 through a connector.
[0031] Multiple rakes 10 are connected to the adjusting plate 3, and the rakes 10 are positioned below the soft elastic soil leveling plate 1.
[0032] In this embodiment, the seedbed leveling mechanism is applied to the seeder. During seedbed preparation, the disc harrow cuts and breaks up the soil, and the rotary tiller performs rotary tillage to break up and disperse the soil. At the same time, the furrow openers on both sides open furrows on both sides of the seedbed along the cutting trajectory of the disc harrow. The harrow grab performs a sorting operation on the soil after rotary tillage, sorting and pressing down large clods of soil, rice stubble, etc. The soft elastic soil leveling plate 1 scrapes the dispersed soil to level it. During the soil leveling process, the soft elastic soil leveling plate 1, due to its own soft and elastic characteristics, can avoid hard compression of the soil (layer), avoid soil compaction and clumping, and thus ensure the soil's permeability and aeration, providing good conditions for seed growth and development.
[0033] The adjusting plate 3 can be rotated by the rotation of the rotating shaft 4, thereby raising or lowering the soft elastic soil leveling plate 1, so that the soft elastic soil leveling plate 1 can be retracted when the seeder is not in use, and avoids damage caused by it being too low.
[0034] Furthermore, such as Figure 1 As shown, the connecting rod 5 is provided with a plurality of connecting holes 9 evenly along the axial direction. The connecting holes 9 penetrate the connecting rod 5 radially, and bolts are provided in two adjacent connecting holes 9 located on both sides of the sliding sleeve 7.
[0035] With this setup, the leveling angle of the scraper can be finely adjusted by adjusting the relative position of the connecting rod 5 and the sliding sleeve, so as to adapt to different leveling conditions according to different cultivation situations.
[0036] Example 2:
[0037] This embodiment is based on embodiment 1, such as... Figure 2 and Figure 3 As shown, the rake 10 is a U-shaped structure formed by connecting (welding) three cylindrical rods end to end. The rake 10 is connected to the adjusting plate 3 through a pressure plate 11. The pressure plate 11 has a C-shaped structure and is provided with semi-circular pressure holes that are adapted to the rake 10. There are two pressure holes arranged along the axial direction of the rake 10 to improve the fixing effect. The pressure plate 11 fixes the rake 10 to the adjusting plate 3 through the pressure holes. The pressure plate 11 is connected to the adjusting plate 3 by bolts.
[0038] The adjusting plate 3 is provided with first connecting plates 12 at both ends, and the soft elastic soil leveling plate 1 is provided with second connecting plates 13 at both ends (left and right). The soft elastic soil leveling plate 1 is connected to the adjusting plate 3 through the second connecting plates 13, bolts, and the second connecting plates 13.
[0039] The rake grab is detachably fixed by the pressure plate and the adjustment plate, making it easy to disassemble and replace the rake grab.
[0040] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. A seedbed leveling mechanism, characterized in that: It includes a soft elastic soil leveling board, which is placed between two furrow openers, and the inner side of the soft elastic soil leveling board is also provided with several rotary tillage blades. The soft, elastic soil-stabilizing board is made of rubber material; The soft, elastic soil-setting board is connected to the rotating shaft on the seeder via an adjusting plate; One end of the adjusting plate is rotatably connected between the two trenchers via a connecting shaft, and the soft elastic soil leveling plate is fixedly installed at the other end of the adjusting plate; the back of the adjusting plate is rotatably connected via a connecting rod, and the two ends of the connecting rod are respectively hinged to the adjusting plate and the rotating shaft.
2. The seedbed leveling mechanism according to claim 1, characterized in that: One end of the connecting rod is connected to the adjusting plate through two lugs. A sliding sleeve is rotatably connected between the two lugs. The sliding sleeve is slidably mounted on the outside of the connecting rod and is connected to the connecting rod through a connector.
3. The seedbed leveling mechanism according to claim 2, characterized in that: The connecting rod is provided with a plurality of connecting holes evenly distributed along the axial direction. The connecting holes penetrate the connecting rod radially, and bolts are provided in two adjacent connecting holes located on both sides of the sliding sleeve.
4. The seedbed leveling mechanism according to claim 1, characterized in that: Multiple rakes are connected to the adjusting plate, and the rakes are positioned below the soft elastic soil leveling plate.
5. The seedbed leveling mechanism according to claim 4, characterized in that: The rake is U-shaped and connected to the adjusting plate via a pressure plate. The pressure plate has a C-shaped structure and is provided with pressure holes that fit the rake. The pressure plate fixes the rake to the adjusting plate through the pressure holes and is connected to the adjusting plate via bolts.
6. The seedbed leveling mechanism according to claim 4, characterized in that: The adjusting plate has a first connecting plate at both ends, and the soft elastic soil leveling plate has a second connecting plate at both ends. The soft elastic soil leveling plate is connected to the adjusting plate through the second connecting plate, bolts, and the second connecting plate.
7. The seedbed leveling mechanism according to claim 1, characterized in that: A disc rake is provided in front of the trencher.