Automatic row spacing adjusting device of pneumatic high-speed corn precision seeder

Abstract

The utility model discloses an automatic row spacing adjusting device of a pneumatic high-speed corn precision seeder, which relates to the technical field of seeding in agricultural machinery and comprises a seeder frame, a fertilizing furrow opener, a U-shaped bolt, a sliding cross beam, a motor, a gear rack structure, an electromagnetic brake, a roller and a connecting plate. The fertilizing furrow opener is vertically fixed at the front end of the sliding cross beam through a U-shaped bolt and is parallel to the center line of the sliding cross beam; the rollers are fixed on the upper and lower end faces and side end faces of the sliding cross beam; the motor is fixed to the upper end face of the sliding beam and connected with the gear through a motor shaft. The electromagnetic brake is fixed between the motor and the gear; the heights of cross beams on the two sides of the seeder rack are different; the rack is welded on a cross beam on the low side of the seeder rack and is meshed with the gear; the connecting plate is fixed at the rear end of the sliding cross beam; according to the utility model, the row spacing can be automatically adjusted according to different agricultural requirements of various regions, such as wide-row and narrow-row corn planting.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery and relates to an automatic row spacing adjustment device for a pneumatic high-speed precision corn planter. Background Technology

[0002] In recent years, my country's agricultural production has accelerated its transformation towards intensification, and the scale of high-standard farmland has been expanding daily. Therefore, the requirements for agricultural machinery are becoming increasingly stringent. Regarding planting machinery, the current development trend of corn planters is towards high speed, precision, and electronic control, aiming to quickly and efficiently plant a larger area per unit time. According to agronomic requirements, different corn varieties and different regions have different row spacing requirements, so the row spacing adjustment process for corn planters before planting is crucial. Traditional corn planters still require manual operation for row spacing adjustment, which is inefficient and cannot meet the requirements of precision and rapid planting. Furthermore, considering the varying row spacing requirements for corn planting in different regions and the emergence of new planting patterns (such as wide-narrow row planting), each planting unit of the corn planter needs to be able to adjust precisely and flexibly.

[0003] In the prior art, a Chinese invention patent entitled "A Row Spacing Adjustment Device for a Multi-Row Seeder" (publication number CN117598075 A, publication date February 27, 2024) is disclosed. It includes a base and four seats mounted on the base for mounting a furrowing and sowing mechanism. The base also has an adjustment mechanism for changing the spacing between the seats. The adjustment mechanism includes a motor, a first drive gear, and racks connecting the seats. A second seat is a reference seat, and the other seats can translate relative to the reference seat. First movable racks are fixed to the first and third seats respectively, with two first movable racks positioned on either side of the center of the first drive gear and meshing with it. The adjustment mechanism also includes a driven gear, which moves with the first movable rack corresponding to the third seat. A first fixed rack and a second movable rack are respectively provided on either side of the center of the driven gear, meshing with it. The second movable rack connects to the fourth seat. The current device uses a single motor to change the row spacing of four individual seeders, but its structure is relatively complex. Furthermore, the device adjusts the row spacing by moving all four seeders synchronously, making it unsuitable for varying agronomic requirements across different regions, such as wide-narrow row planting patterns. Therefore, to address these shortcomings, an automatic row spacing adjustment device for a pneumatic precision corn seeder is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic row spacing adjustment device for a pneumatic high-speed precision corn planter. This pneumatic high-speed precision corn planter can automatically adjust the row spacing according to agronomic requirements before sowing, reducing the time required to adjust the row spacing and facilitating rapid adjustment for different row spacing requirements in various regions and for new planting patterns such as wide and narrow rows of corn.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic row spacing adjustment device for a pneumatic high-speed precision corn seeder includes a seeder frame, a fertilizer furrow opener, U-bolts, a sliding crossbeam, a motor, a gear and rack structure, an electromagnetic brake, rollers, and a connecting plate. The fertilizer furrow opener is vertically fixed to the front end of the sliding crossbeam by U-bolts and remains parallel to the center line of the sliding crossbeam. The rollers are fixed to the upper and lower end faces and the side end faces of the sliding crossbeam. The motor is fixed to the upper end face of the sliding crossbeam and connected to the gear via a motor shaft. The electromagnetic brake is fixed between the motor and the gear. The two crossbeams of the seeder frame have different heights. The rack is welded to the lower crossbeam of the seeder frame and meshes with the gear. The connecting plate is fixed to the rear end of the sliding crossbeam.

[0007] The beneficial effects of this utility model are as follows: This utility model employs a motor-driven gear and rack structure with a self-locking design via an electromagnetic brake. Before sowing, the motor provides power to move the gear and rack welded to the seeder frame, allowing the seeding units mounted on the four-bar linkage to automatically and quickly adjust the row spacing according to local requirements or planting patterns (such as wide or narrow rows). The electromagnetic brake mounted on the motor shaft provides self-locking, preventing changes in row spacing caused by the seeding units moving the sliding crossbeam during sowing or when the seeder turns. The sliding crossbeam and the seeder frame are connected by rollers, converting sliding friction into rolling friction, reducing friction and motor power consumption. The rollers on the upper and lower ends, side faces, and connecting plates of the sliding crossbeam position the seeder frame. The fertilizer applicator is fixed to the sliding crossbeam and parallel to its centerline; the distance between them can be set according to agronomic requirements to prevent seedling burn. Attached Figure Description

[0008] Figure 1 This is an isometric view of the present invention.

[0009] Figure 2 The following is an isometric view of the overall structure, using a six-row corn planter as an example.

[0010] In the diagram: 1. Fertilizer furrow opener; 2. U-bolt; 3. Roller; 4. Motor; 5. Electromagnetic brake; 6. Gear; 7. Connecting plate; 8. Sliding crossbeam; 9. Seeder frame; 10. Rack. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] like Figure 1As shown, an automatic row spacing adjustment device for a pneumatic high-speed precision corn seeder includes a fertilizer furrow opener 1, U-shaped fixing bolts 2, rollers 3, a motor 4, an electromagnetic brake 5, a gear 6, a connecting plate 7, a sliding crossbeam 8, a seeder frame 9, and a rack 10. The fertilizer furrow opener 1 is vertically fixed to the front end of the sliding crossbeam 8 by the U-shaped bolts 2 and is parallel to the center line of the sliding crossbeam 8. The rollers 3 are fixed to the upper and lower end faces and the side end faces of the sliding crossbeam 8. The motor 4 is fixed to the upper end face of the sliding crossbeam 8 and is connected to the gear 6 through the motor shaft. The electromagnetic brake 5 is fixed between the motor 4 and the gear 6. The two crossbeams of the seeder frame 9 have different heights. The rack 10 is welded to the lower side crossbeam of the seeder frame 9 and meshes with the gear 6. The connecting plate 7 is fixed to the rear end of the sliding crossbeam 8.

[0013] Working principle: Before sowing, the row spacing is adjusted according to local agronomic requirements. Specifically, the fertilizer furrow opener 1 is first adjusted according to agronomic requirements. Then, the motor 4 is powered by a tractor or battery. The motor 4 drives the gear 6 to rotate through the motor shaft. The reaction force generated by the rotation of the gear 6 and rack 10 drives the sliding crossbeam 8 to move on the seeder frame 9. The electromagnetic brake 5 on the motor shaft is used for self-locking to prevent the sowing units from moving the sliding crossbeam 8 during sowing or when the seeder turns, which would cause changes in row spacing. Rollers 3 are fixed on the upper, lower and side faces of the sliding crossbeam 8, which transforms the sliding friction between the sliding crossbeam 8 and the seeder frame 9 into rolling friction. The rollers 3 also position the seeder frame to prevent misalignment between the sliding crossbeam 8 and the seeder frame 9.

[0014] This embodiment is merely an illustration of the concept and implementation of this utility model, and is not intended to limit it. Under the concept of this utility model, the technical solution without substantial changes is still within the scope of protection.

Claims

1. An automatic row spacing adjustment device for a pneumatic high-speed precision corn seeder, characterized in that, The device includes a seeder frame, a fertilizer furrow opener, U-bolts, a sliding crossbeam, a motor, a gear and rack structure, an electromagnetic brake, rollers, and a connecting plate. The fertilizer furrow opener is vertically fixed to the front end of the sliding crossbeam by U-bolts and is parallel to the center line of the sliding crossbeam. The rollers are fixed to the upper and lower end faces and the side end faces of the sliding crossbeam. The motor is fixed to the upper end face of the sliding crossbeam and connected to the gear through the motor shaft. The electromagnetic brake is fixed between the motor and the gear. The two crossbeams of the seeder frame are at different heights. The rack is welded to the crossbeam on the side of the seeder frame with the lower height and meshes with the gear. The connecting plate is fixed to the rear end of the sliding crossbeam.

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