A corn harvester's field-returning device

Abstract

This utility model relates to the field of agricultural straw return technology, specifically to a straw return device for a corn harvester, including a bracket assembly, a picking mechanism, and a straw return mechanism. The picking mechanism is fixedly mounted above the bracket assembly, and the straw return mechanism is rotatably mounted below the bracket assembly. The straw return mechanism includes a straw return drive component and a straw return swing head; the straw return drive component is mounted on the bracket assembly and is rotatably connected to the straw return swing head, which drives the straw return swing head to swing upwards or downwards relative to the bracket assembly. By fixing the picking mechanism to the bracket assembly, the picking mechanism rises and falls together with the bracket assembly. The straw return mechanism can swing up and down independently relative to the bracket assembly and the picking mechanism, that is, the straw return mechanism is driven by the straw return drive component, which drives the straw return swing head to swing, so that the straw can be returned to the field more effectively while ensuring the picking of ears by the picking mechanism.

Description

Technical Field

[0001] This utility model relates to the field of agricultural field return technology, and in particular to a field return device for a corn harvester. Background Technology

[0002] A corn harvester is an agricultural implement that mechanically performs multiple tasks in one operation when corn is mature, including ear picking, stacking, and returning the stalks to the field. The specific process is as follows: The corn harvester picks the ears while the corn is still growing (called standing ear picking). Under the action of the ear picking rollers and picking plates, the ear stalks are broken off. Due to the height difference between the inner and outer picking rollers, the ears fall into the ear box. Once the box is full, it is opened and the ears are stacked. A high-speed rotating cutter cuts the stalks from the root, and the stalks are then shredded into 3-5 cm pieces by a crushing mechanism. After chopping, the stalks fall to the ground naturally. The ears are then transported to the field, where they are hulled by a peeling machine, dried, and threshed.

[0003] Currently, most corn harvesters have their field-returning devices located below the ear-picking platform. Both the field-returning device and the ear-picking platform are connected to the rear main body of the corn harvester via a bracket. That is, the ear-picking platform and the field-returning device are fixed on the upper and lower sides of the bracket, respectively, and are controlled by hydraulic cylinders connected to the bracket, so that the ear-picking platform and the field-returning device can rise and fall together with the bracket.

[0004] When harvesting corn ears, a hydraulic cylinder raises the support frame, causing both the harvesting platform and the stalk returning device to rise together. This brings the harvesting platform closer to the corn ears, resulting in faster harvesting, less threshing, and better ear harvesting. However, the stalk returning device is relatively high off the ground, causing the stalks to fall higher and reducing the effectiveness of the stalk returning process. Conversely, when returning corn stalks to the field, a hydraulic cylinder lowers the support frame, lowering the device and the stalks. This also improves the stalk returning process. However, the harvesting platform is farther from the corn ears, resulting in slower harvesting, more threshing, and poorer ear harvesting. In other words, the optimal effects of ear harvesting and stalk returning cannot be achieved simultaneously. Utility Model Content

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a corn harvester returning to the field device, which solves the technical problem that the existing collection section is composed of multiple metal plates, resulting in a large electric field weight and making it inconvenient for subsequent disassembly, maintenance and cleaning.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] This utility model embodiment provides a corn harvester's field-returning device, including a bracket assembly, an ear-picking mechanism, and a field-returning mechanism;

[0008] The ear-picking mechanism is fixedly mounted above the bracket assembly, and the field-returning mechanism is rotatably mounted below the bracket assembly;

[0009] The field-returning mechanism includes a field-returning drive component and a field-returning swing head; the field-returning drive component is mounted on the bracket assembly, and the field-returning drive component and the field-returning swing head are rotatably connected, and the field-returning drive component is used to drive the field-returning swing head to swing upward or downward relative to the bracket assembly.

[0010] Optionally, the oscillating head includes a connecting beam and a plurality of hob bearing seat plates spaced apart along the longitudinal direction of the connecting beam, and the hob bearing seat plates are used to mount hobs.

[0011] A connecting piece is fixedly installed at the center of the bottom end face of the connecting beam, and the connecting piece is connected to the field return drive component through a rotating pin.

[0012] Optionally, the bracket assembly includes a bracket beam arranged parallel to the connecting beam and a plurality of bracket connecting beams spaced apart along the bracket beam, wherein the plurality of bracket connecting beams are arranged perpendicular to the bracket beam and the bracket connecting beams are connected to the main body of the corn harvester;

[0013] The bottom end face of the bracket beam is provided with multiple rotating supports at intervals, and each rotating support is hinged to the hob bearing seat plate.

[0014] Optionally, the bracket assembly further includes a bracket lifting hydraulic cylinder, which is hinged to the bracket connecting beam to drive the bracket connecting beam to swing up and down relative to the corn harvester body.

[0015] Optionally, a mounting plate is provided at the center of the bracket beam, and the field-returning drive component is connected to the bracket beam through the mounting plate.

[0016] Optionally, the bracket beam and the connecting beam have the same length in the longitudinal direction, and both are made of square steel pipe.

[0017] Optionally, the field-returning drive includes at least one field-returning hydraulic cylinder.

[0018] Optionally, there are 1 to 3 hydraulic cylinders for returning the soil to the field.

[0019] Optionally, the hydraulic cylinders for returning to the field are spaced apart along the longitudinal direction of the bracket beam.

[0020] The beneficial effects of this utility model are as follows: The corn harvester's returning-to-field device of this utility model fixes the ear-picking mechanism to the bracket assembly, allowing the ear-picking mechanism to rise and fall together with the bracket assembly. The returning-to-field mechanism can swing up and down independently relative to the bracket assembly and the ear-picking mechanism. Specifically, the returning-to-field mechanism is driven by a centrally located returning-to-field drive unit to swing the returning-to-field swing head, ensuring better returning and rising of the straw while simultaneously ensuring the ear-picking mechanism picks the ears. This allows the technological effects of ear picking and returning to the field to be simultaneously achieved. Attached Figure Description

[0021] Figure 1 This is a side view of the field-returning device containing a corn harvester of this utility model (the field-returning swing head is swinging upwards).

[0022] Figure 2 This is a side view of the field-returning device containing a corn harvester of this utility model (the field-returning swing head is swinging downwards).

[0023] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Bracket assembly; 11. Bracket crossbeam; 12. Bracket connecting beam; 13. Rotary support; 14. Bracket lifting hydraulic cylinder; 15. Mounting plate; 2. Ear picking mechanism; 3. Returning to field mechanism; 31. Returning to field drive component; 32. Returning to field swing head; 321. Connecting crossbeam; 322. Hob bearing seat plate; 323. Hob; 324. Connecting piece. Detailed Implementation

[0026] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] See Figures 1-3 As shown in the figure, a corn harvester's field-returning device according to an embodiment of this utility model includes a bracket assembly 1, a picking mechanism 2, and a field-returning mechanism 3. The picking mechanism 2 is fixedly disposed above the bracket assembly 1, and the field-returning mechanism 3 is rotatably disposed below the bracket assembly 1. The field-returning mechanism 3 includes a field-returning drive component 31 and a field-returning swing head 32; the field-returning drive component 31 is mounted on the bracket assembly 1, and the field-returning drive component 31 and the field-returning swing head 32 are rotatably connected, and the field-returning drive component 31 is used to drive the field-returning swing head 32 to swing upward or downward relative to the bracket assembly 1.

[0028] In this embodiment, a corn harvester's field-returning device fixes the ear-picking mechanism 2 to the bracket assembly 1, allowing the ear-picking mechanism 2 to rise and fall together with the bracket assembly 1. The field-returning mechanism 3 can swing up and down independently relative to the bracket assembly 1 and the ear-picking mechanism 2. That is, the field-returning mechanism 3 is driven by the field-returning drive component 31 to swing the field-returning swing head 32, so that the straw can be returned to the field more effectively while ensuring the ear-picking mechanism 2 can pick ears. Driving the field-returning drive component 31 drives the connecting crossbeam 321 to make a selection action with the rotating support 13 as the fulcrum, thereby driving the roller bearing seat plate 322 and the mounting roller 323 to rotate and rise or rotate and lower. The ear-picking mechanism 2 can harvest lodged crops under the drive of the bracket assembly 1. When harvesting at a high level, the field-returning effect of the field-returning mechanism 1 can be guaranteed. The lifting and lowering of the field-returning drive component 31 is operated by a single hydraulic cylinder, which is simple in structure.

[0029] Furthermore, the straw-crushing oscillating head 32 includes a connecting beam 321 and multiple roller bearing seat plates 322 spaced apart along the longitudinal direction of the connecting beam 321, with the roller bearing seat plates 322 used to mount the rollers 323. A connecting piece 324 is fixedly installed at the center of the bottom end face of the connecting beam 321, and the connecting piece 324 is connected to the straw-crushing drive component 31 via a rotating pin. It should also be noted that the rollers 323 of this straw-crushing mechanism 3 crushing straw is existing technology and will not be described in detail here. In addition, the ear-picking mechanism 2 is also an existing ear-picking mechanism 2 and will not be described in detail here.

[0030] Furthermore, the bracket assembly 1 includes a bracket beam 11 arranged parallel to the connecting beam 321, and a plurality of bracket connecting beams 12 spaced apart along the bracket beam 11. The plurality of bracket connecting beams 12 are arranged perpendicular to the bracket beam 11 and are connected to the main body of the corn harvester. A plurality of rotating supports 13 are spaced apart on the bottom end face of the bracket beam 11, and each rotating support 13 is hinged to the cutter bearing seat plate 322.

[0031] Furthermore, the bracket assembly 1 also includes a bracket lifting hydraulic cylinder 14, which is hinged to the bracket connecting beam 12 to drive the bracket connecting beam 12 to swing up and down relative to the main body of the corn harvester. The bracket lifting hydraulic cylinder 14 can drive the bracket crossbeam 11 through the bracket connecting beam 12. In addition, the returning-to-field drive component 31 can drive the returning-to-field swing head 32 to swing up and down. The two can be adjusted independently so that the ear picking and returning-to-field can reach the optimal working position respectively. In this embodiment, the returning-to-field mechanism 3 and the ear picking mechanism 1 are lowered simultaneously with the bracket assembly 1. The ear picking mechanism 1 can harvest lodged corn; when the returning-to-field mechanism 3 is lowered, the ear picking mechanism 2 is raised for high-level harvesting, while ensuring the crushing effect. See also Figure 1 As shown, the returning-to-field mechanism 3 is raised and the ear-picking mechanism 2 is lowered via the lifting hydraulic cylinder 14 of the bracket, at which point lodged crops can be harvested. See also Figure 2As shown, raising the ear-picking mechanism 2 and lowering the returning-to-field mechanism 3 results in the best harvesting effect.

[0032] Furthermore, a mounting plate 15 is provided at the center of the bracket beam 11, and the field-returning drive component 31 is connected to the bracket beam 11 through the mounting plate 15. This allows for better control of the force, making the field-returning drive component 31 less strenuous and the field-returning swing heads 32 on both sides more synchronized.

[0033] Furthermore, the bracket beam 11 and the connecting beam 321 have the same length in the longitudinal direction, and both are made of square steel tubing. The forming process is simple, the stability is good, and the cost is low.

[0034] Furthermore, the field-returning drive component 31 includes at least one field-returning hydraulic cylinder. There are 1-3 such hydraulic cylinders, facilitating operation and installation.

[0035] Furthermore, the hydraulic cylinders for returning to the field are spaced apart along the longitudinal direction of the bracket beam 11.

[0036] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A field-returning device for a corn harvester, characterized in that: It includes a bracket assembly (1), a picking mechanism (2), and a returning mechanism (3); The ear-picking mechanism (2) is fixedly installed above the bracket assembly (1), and the field-returning mechanism (3) is rotatably installed below the bracket assembly (1); The returning mechanism (3) includes a returning drive (31) and a returning swing head (32); the returning drive (31) is mounted on the bracket assembly (1), and the returning drive (31) and the returning swing head (32) are rotatably connected. The returning drive (31) is used to drive the returning swing head (32) to swing upward or downward relative to the bracket assembly (1).

2. The field-returning device for a corn harvester according to claim 1, characterized in that: The oscillating head (32) includes a connecting beam (321) and a plurality of hob bearing seat plates (322) spaced apart along the longitudinal direction of the connecting beam (321), and the hob bearing seat plates (322) are used to install hobs (323). A connecting piece (324) is fixedly installed at the center of the bottom end face of the connecting beam (321), and the connecting piece (324) is connected to the field return drive component (31) by a rotating pin.

3. The field-returning device for a corn harvester according to claim 2, characterized in that: The bracket assembly (1) includes a bracket beam (11) arranged parallel to the connecting beam (321) and a plurality of bracket connecting beams (12) spaced apart along the bracket beam (11). The plurality of bracket connecting beams (12) are arranged perpendicular to the bracket beam (11) and are connected to the main body of the corn harvester. The bottom end face of the bracket beam (11) is provided with a plurality of rotating supports (13) at intervals, and each of the rotating supports (13) is hinged to the hob bearing seat plate (322).

4. The field-returning device for a corn harvester according to claim 3, characterized in that: The bracket assembly (1) also includes a bracket lifting hydraulic cylinder (14), which is hinged to the bracket connecting beam (12) to drive the bracket connecting beam (12) to swing up and down relative to the main body of the corn harvester.

5. The field-returning device for a corn harvester according to claim 3, characterized in that: An mounting plate (15) is provided at the center of the bracket beam (11), and the returning drive component (31) is connected to the bracket beam (11) through the mounting plate (15).

6. The field-returning device for a corn harvester according to claim 3, characterized in that: The bracket beam (11) and the connecting beam (321) have the same length in the longitudinal direction, and both are made of square steel pipe.

7. The field-returning device for a corn harvester according to claim 3, characterized in that: The field return drive (31) includes at least one field return hydraulic cylinder.

8. The field-returning device for a corn harvester according to claim 7, characterized in that: There are 1-3 hydraulic cylinders for returning the soil to the field.

9. The field-returning device for a corn harvester according to claim 8, characterized in that: The hydraulic cylinders for returning to the field are spaced apart along the longitudinal direction of the bracket beam (11).

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