Multifunctional seed-metering device for film mulching seeder

Abstract

The utility model relates to the technical field of agricultural machinery, and discloses a multifunctional seed-metering device for a film mulching seeder, which comprises a bottom plate provided with an opening and closing pressure plate; a main film cutting plate is fixedly arranged at the front end of the bottom plate, a seed centering guide groove is formed in the main film cutting plate, an auxiliary film cutting plate is fixedly arranged at the front end of the main film cutting plate, and the auxiliary film cutting plate is horizontally arranged at the top of the main film cutting plate; a seeding opening is formed in the front end of the bottom plate and located at the bottom of the seed centering guide groove, and a return spring is arranged at the top of the rear end of the bottom plate and located between the opening and closing pressing plate and the bottom plate. Compared with the prior art, the device has the advantages that the structure is simple, and the operation is convenient; the problem that the seeds are completely covered due to mulching film deviation is effectively avoided; due to the design of the seed centering guide groove, seeds can be accurately distributed in the film in a centered manner, and the seeding accuracy is improved; the device is suitable for most seeding machines, and the investment of farmers on machines is reduced; the emergence rate is improved, and the method plays a key role in increasing the yield and income of grains.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a multi-functional seed metering device for a film-laying seeder. Background Technology

[0002] In existing agricultural sowing operations, mulch-laying seeders are a widely used type of agricultural machinery. However, traditional mulch-laying seeders have relatively small seed metering openings, typically around 15 square centimeters. With this design, if the mulch shifts even slightly during sowing, the seeds can easily be completely covered by the mulch, preventing them from germinating and thus affecting crop yield.

[0003] Therefore, how to improve the performance of seed metering devices to ensure that seeds can be accurately and stably sown into the soil and successfully emerge from the film has become an urgent problem to be solved in the field of agricultural machinery. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to provide a multi-functional seed metering device for a film-laying seeder.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a multi-functional seed metering device for a film-laying seeder, including a base plate, wherein the base plate is provided with an opening and closing pressure plate;

[0006] The main cutting film plate is fixedly provided at the front end of the base plate. The main cutting film plate is provided with a seed centering guide groove. The secondary cutting film plate is fixedly provided at the front end of the main cutting film plate. The secondary cutting film plate is horizontally arranged on the top of the main cutting film plate.

[0007] The main cutting membrane plate is provided with a pin at the end away from the secondary cutting membrane plate, and a pin sleeve is provided on the outside of the pin. The opening and closing pressure plate is hinged to the main cutting membrane plate through the pin and connecting bolts.

[0008] The opening and closing pressure plate is L-shaped, and a depth limiting plate is provided at the top corner of the opening and closing pressure plate. A pressure plate support piece is provided between the opening and closing pressure plate and the depth limiting plate.

[0009] The base plate has a sowing opening at the front end, which is located at the bottom of the seed centering guide groove. The base plate has a return spring at the rear end, which is located between the opening and closing pressure plate and the base plate.

[0010] As a preferred embodiment, the side of the base plate is provided with mounting parts for connection with the seeder.

[0011] As a preferred embodiment, both the primary and secondary cutting membranes are made of wear-resistant and corrosion-resistant metals to enhance their service life and durability.

[0012] As a preferred embodiment, the cross-sectional shape of the seed centering guide groove is V-shaped or U-shaped to better guide the seeds to be centrally distributed in the film and ensure the accuracy of sowing.

[0013] As a preferred embodiment, the pin sleeve is provided with a lubrication layer or lubrication structure to reduce the friction of the pin inside the sleeve, making the opening and closing of the pressure plate smoother.

[0014] As a preferred embodiment, the return spring is detachable. By installing return springs with different elastic forces, the speed and force of the opening and closing pressure plate when closing can be controlled, ensuring the stability and accuracy of the sowing operation.

[0015] Compared with existing technologies, the advantages of this invention are: simple structure and convenient operation; through the cooperation of the main and auxiliary cutting films and the opening of the opening and closing pressure plate, the opening of the seed metering device can reach about 46 square centimeters, which is much larger than the opening size of traditional seed metering devices, effectively avoiding the problem of seeds being completely covered due to film offset; the seed centering guide groove design allows the seeds to be accurately centered in the film, improving the accuracy of sowing; the bottom plate hole is designed as a long hole, making this invention applicable to most seeders, reducing farmers' investment in machinery; due to the advantages of large opening and seed centering, even if the film is slightly offset, it will not cause the seeds and film holes to shift, thus greatly improving the germination rate and playing a key role in increasing grain production and income. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0018] Figure 3 This is an exploded view of this utility model.

[0019] As shown in the figure: 1. Base plate, 2. Opening and closing pressure plate, 3. Main cutting film plate, 4. Secondary cutting film plate, 5. Seed centering guide groove, 6. Return spring, 7. Pin shaft, 8. Pin shaft sleeve, 9. Pressure plate support plate, 10. Depth limiting plate, 11. Connecting bolt, 12. Mounting parts, 13. Sowing opening. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "back," 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 component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Referring to the attached drawings, a multi-functional seed metering device for a film-laying seeder includes a base plate 1, on which an opening and closing pressure plate 2 is provided;

[0024] A main cutting film plate 3 is fixedly provided at the front end of the base plate 1. A seed centering guide groove 5 is provided inside the main cutting film plate 3. A secondary cutting film plate 4 is fixedly provided at the front end of the main cutting film plate 3. The secondary cutting film plate 4 is horizontally set on the top of the main cutting film plate 3.

[0025] The end of the main cutting membrane 3 away from the secondary cutting membrane 4 is provided with a pin 7, and a pin sleeve 8 is provided on the outside of the pin 7. The opening and closing pressure plate 2 is hinged to the main cutting membrane 3 through the pin 7 and the connecting bolt 11.

[0026] The opening and closing pressure plate 2 is L-shaped, and a depth limiting plate 10 is provided at the top corner of the opening and closing pressure plate 2. A pressure plate support piece 9 is provided between the opening and closing pressure plate 2 and the depth limiting plate 10.

[0027] The bottom plate 1 has a sowing opening 13 at the front end, which is located at the bottom of the seed centering guide groove 5. The bottom plate 1 has a return spring 6 at the rear end, which is located between the opening and closing pressure plate 2 and the bottom plate 1.

[0028] The base plate 1 has a mounting part 12 for connecting to the seeder on its side.

[0029] Both the main cutting membrane plate 3 and the secondary cutting membrane plate 4 are made of wear-resistant and corrosion-resistant metal to enhance their service life and durability.

[0030] The cross-sectional shape of the seed centering guide groove 5 is V-shaped or U-shaped to better guide the seeds to be centered in the film and ensure the accuracy of sowing.

[0031] The pin sleeve 8 is provided with a lubricating layer or lubricating structure to reduce the friction of the pin 7 inside the sleeve, so that the opening and closing of the opening and closing pressure plate 2 is smoother.

[0032] The return spring 6 is detachable. By installing return springs 6 with different elastic forces, the speed and force of closing the opening and closing pressure plate 2 can be controlled to ensure the stability and accuracy of the sowing operation.

[0033] In practical implementation, the multi-functional seed metering device of this invention is installed on a film-laying seeder, ensuring that all components are securely connected. The height of the depth limiting plate is adjusted according to the type of crop and soil conditions to determine the appropriate sowing depth. The spring force of the return spring is checked to ensure that the opening and closing pressure plate can open and close smoothly.

[0034] Start the film-laying seeder and allow it to move forward at the predetermined speed and direction. When the seed metering device contacts the soil, the main cutting plate first cuts into the film, followed by the secondary cutting plate cutting open the film to create a seeding opening. When the seed metering device reaches the predetermined seeding depth, the opening and closing pressure plate automatically opens under the action of the mechanical structure, and the seeds fall accurately into the soil through the seed centering guide groove. After seeding is completed, the seed metering device continues to move with the film-laying seeder, and the opening and closing pressure plate automatically closes under the action of the return spring, preparing for the next seeding.

[0035] After sowing, promptly clean the soil and residual seeds from the seed metering device to prevent blockage. Regularly inspect the wear of each component and replace severely worn parts as needed. Replenish or replace the lubricating layer inside the pin sleeve to ensure smooth movement of the opening and closing pressure plate.

[0036] This utility model discloses a multi-functional seed metering device for a film-laying seeder. Its core lies in the cooperation of an opening and closing pressure plate with a main cutting film plate and a secondary cutting film plate to achieve large-area film cutting and accurate seed sowing. When the seed metering device enters the soil with the film-laying seeder, the main cutting film plate first cuts into the film, followed by the secondary cutting film plate further cutting the film to form a larger opening. At this time, the opening and closing pressure plate remains closed under the action of a return spring. When the predetermined sowing depth is reached, the opening and closing pressure plate opens, and the seeds fall accurately into the soil through the seed centering guide groove. After sowing is completed, the seed metering device moves upward with the film-laying seeder, and the opening and closing pressure plate automatically closes under the action of the return spring, completing one sowing cycle.

[0037] Taking corn planting as an example, the multi-functional seed metering device of this invention was selected for planting operations. First, the height of the depth limiting plate was adjusted according to the corn planting depth and soil conditions. Then, the seed metering device was installed on the film-laying seeder, and the machine was started for planting. During the planting process, the operating status of the seed metering device and the planting effect were observed. The results showed that the seed metering device could complete the planting operation stably and accurately, with a large area of ​​film cutting, uniform seed distribution, and a high germination rate.

[0038] As can be seen from the above description of specific embodiments, this utility model provides a novel and high-performance multi-functional seed metering device for film-laying seeders. This seed metering device not only solves the problem of small openings in traditional seed metering devices, which easily lead to seeds being covered by mulch film, but also improves seed germination rate and crop yield, possessing broad application prospects and promotional value.

[0039] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-functional seed metering device for a film-laying seeder, characterized in that: Includes a base plate, on which an opening and closing pressure plate is provided; The main cutting film plate is fixedly provided at the front end of the base plate. The main cutting film plate is provided with a seed centering guide groove. The secondary cutting film plate is fixedly provided at the front end of the main cutting film plate. The secondary cutting film plate is horizontally arranged on the top of the main cutting film plate. The main cutting membrane plate is provided with a pin at the end away from the secondary cutting membrane plate, and a pin sleeve is provided on the outside of the pin. The opening and closing pressure plate is hinged to the main cutting membrane plate through the pin and connecting bolts. The opening and closing pressure plate is L-shaped, and a depth limiting plate is provided at the top corner of the opening and closing pressure plate. A pressure plate support piece is provided between the opening and closing pressure plate and the depth limiting plate. The base plate has a sowing opening at the front end, which is located at the bottom of the seed centering guide groove. The base plate has a return spring at the rear end, which is located between the opening and closing pressure plate and the base plate.

2. The multi-functional seed metering device for a film-laying seeder according to claim 1, characterized in that: The bottom plate is equipped with mounting parts for connecting to the seeder.

3. The multi-functional seed metering device for a film-laying seeder according to claim 1, characterized in that: Both the primary and secondary cutting membranes are made of wear-resistant and corrosion-resistant metals to enhance their service life and durability.

4. The multi-functional seed metering device for a film-laying seeder according to claim 1, characterized in that: The cross-sectional shape of the seed centering guide groove is V-shaped or U-shaped to better guide the seeds to be centered in the film and ensure the accuracy of sowing.

5. A multi-functional seed metering device for a film-laying seeder according to claim 1, characterized in that: The pin sleeve is provided with a lubrication layer or lubrication structure to reduce the friction of the pin inside the sleeve, so that the opening and closing of the pressure plate is smoother.

6. The multi-functional seed metering device for a film-laying seeder according to claim 1, characterized in that: The return spring is detachable. By installing return springs with different elastic forces, the speed and force of the opening and closing pressure plate when it closes can be controlled, ensuring the stability and accuracy of the sowing operation.

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