A maize harvesting ear picking mechanism and a maize harvester

Abstract

The utility model discloses a corn harvesting ear picking mechanism and corn harvester. The corn harvesting ear picking mechanism, including one or more ear picking roller groups, each ear picking roller group is formed by two ear picking rollers that cooperate and work, and each ear picking roller comprises a stalk pulling roller tube, the surface of the stalk pulling roller tube is provided with a stalk pulling plate along its length direction, the stalk pulling plate comprises a plane stalk pulling plate and a sawtooth stalk pulling plate, the top surface of the plane stalk pulling plate is a plane, the top surface of the sawtooth stalk pulling plate is provided with a sawtooth groove, and the plane stalk pulling plate and the sawtooth stalk pulling plate are distributed at intervals. The utility model is a kind of plate-tooth combined ear picking device, and multiple distributed stalk pulling strips can also be pulled down completely to small straw, the sawtooth stalk pulling plate increases the pulling force to straw, can reduce the jamming phenomenon of corn straw in cutting table, increase corn harvesting efficiency, can also reduce the loss to cutting table, improve the service life of cutting table.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural harvesting machinery technology, specifically a corn-picking mechanism suitable for the header of a self-propelled corn harvester. Background Technology

[0002] The ear-picking mechanism is an important component of a self-propelled corn harvester. Currently, there are various structures for the ear-picking rollers on the header of existing corn harvesters, and their ear-picking functions also differ, but each has certain shortcomings.

[0003] One type is the roller-type ear-picking mechanism, which consists of two opposing ear-picking rollers forming a pair of working units. These rollers create a picking path aligned with a row of corn for ear-picking operations. Roller-type ear-picking relies on the rotating rollers to squeeze and pull down the corn stalks, and then squeeze the base of the corn ear to achieve ear picking. This structure is suitable for harvesting green, wet corn ears in the Central Plains region. Another type is the plate-type ear-picking mechanism, which consists of two paired stalk-pulling rollers and a pair of ear-picking plates on top. During ear picking, the rotating stalk-pulling rollers clamp and pull down the ear stalk, forcibly removing the ear after it is blocked by the pair of ear-picking plates.

[0004] Current corn planters frequently experience uneven planting density, missed planting, and double planting during corn planting operations, posing a significant challenge to the harvesters. As corn density varies, the feed rate to the header also varies. This is especially true with the recently promoted "triangular" planting method, where uneven header feed during uniform harvesting reduces harvesting efficiency. Regardless of whether a roller-type or plate-type ear-picking mechanism is installed, a sudden large influx of corn into the header can prevent the ear-picking mechanism from properly pulling down the corn stalks, potentially causing header blockage and missed harvesting. Uneven feed rates result in significant wear and tear on the header, shortening its lifespan and increasing harvesting costs for farmers. Utility Model Content

[0005] The purpose of this invention is to provide a corn harvesting and ear-picking mechanism and a corn harvester that can reduce header blockage and improve corn harvesting efficiency.

[0006] To solve the above technical problems, according to one aspect of the present invention, a corn harvesting and ear-picking mechanism is provided, including one or more ear-picking roller groups, each ear-picking roller group consisting of two cooperating ear-picking rollers, each ear-picking roller including a stalk-pulling roller tube, the surface of the stalk-pulling roller tube being provided with a stalk-pulling plate along its length direction, the stalk-pulling plate including a flat stalk-pulling plate and a serrated stalk-pulling plate, the top surface of the flat stalk-pulling plate being flat, the top surface of the serrated stalk-pulling plate being provided with a serrated groove, the flat stalk-pulling plate and the serrated stalk-pulling plate being distributed alternately.

[0007] Furthermore, the number of both the flat stem-pulling plate and the serrated stem-pulling plate is 4.

[0008] Furthermore, a rear sleeve is provided at the rear end of the stem-pulling roller tube, and the rear sleeve is connected to the drive mechanism that drives the stem-pulling roller tube to rotate.

[0009] Furthermore, a shaft is connected to the middle of the front end of the stalk-pulling roller tube. The shaft is installed in a bearing seat through a bearing, and the outer surface of the bearing seat is connected to the stalk-picking frame by bolts.

[0010] Furthermore, the front end of the shaft is connected to a guide cone, and the surface of the guide cone is provided with helical ribs.

[0011] Furthermore, in a tassel-picking roller assembly, the stem-pulling plates in the two tassel-picking rollers are staggered.

[0012] According to another aspect of the present invention, a corn harvester is provided, including the corn harvesting and ear-picking mechanism described above.

[0013] This invention provides a toothed and plate-type ear-picking device that can accommodate different corn planting densities. The multiple stalk-pulling strips can completely pull down even small stalks, and the serrated stalk-pulling plates increase the pulling force on the stalks. This invention can reduce the clogging of corn stalks on the header, increase corn harvesting efficiency, and at the same time reduce wear and tear on the header and extend its service life.

[0014] The corn harvesting and ear-picking mechanism provided by this utility model has a compact structure, stable and reliable performance, simple assembly, and smooth operation; it has been verified that its harvesting effect is significant. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention.

[0016] Figure 1 This is a schematic diagram of the structure of the corn harvesting and ear-picking mechanism of this utility model, which includes multiple ear-picking roller groups; Figure 2 This is a schematic diagram of the structure of the picking roller provided by this utility model; Figure 3 This is a partial cross-sectional view of the picking roller provided by this utility model.

[0017] In the figure, 1-picking roller, 2-stem pulling roller tube, 3-flat stem pulling plate, 4-serrated stem pulling plate, 5-rear sleeve, 6-shaft, 7-bearing, 8-bearing seat, 9-bolt, 10-guide cone, 11-spiral rib, 12-cutting box. Detailed Implementation

[0018] To enable those skilled in the art to better understand this utility model, the present utility model will be further described clearly and completely below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0019] like Figure 1 As shown, a typical embodiment of the present invention provides a corn harvesting and ear-picking mechanism, including one or more ear-picking roller groups, each ear-picking roller group consisting of two ear-picking rollers 1 working in cooperation, and each ear-picking roller 1 including a stalk-pulling roller tube 2.

[0020] like Figure 2 and Figure 3 As shown, the surface of the stem-pulling roller tube 2 is provided with stem-pulling plates along its length direction. The stem-pulling plates include a flat stem-pulling plate 3 and a serrated stem-pulling plate 4. The top surface of the flat stem-pulling plate 3 is flat, and the top surface of the serrated stem-pulling plate 4 is provided with a serrated groove. The flat stem-pulling plate 3 and the serrated stem-pulling plate 4 are distributed at intervals.

[0021] According to this embodiment, when the corn stalks are fed into the header of the corn harvester, the opposing ear-picking roller 2 rotates to pull down the corn stalks, separating the ears from the stalks. The flat stalk-pulling plate 3 and the serrated stalk-pulling plate 4 are spaced apart around the stalk-pulling roller tube 2, which prevents the corn ears from being squeezed or causing kernel loss when the stalks are pulled down. This solves the problem of stalks easily breaking in plate headers and also solves the problem of corn kernels being damaged and falling out due to the squeezing of ears in roller headers.

[0022] In a preferred embodiment, there are four flat stem-pulling plates 3 and four serrated stem-pulling plates 4, so that the spacing between the stem-pulling plates is relatively small.

[0023] In a relatively specific implementation, such as Figure 1 , Figure 2 As shown, a rear sleeve 5 is provided at the rear end of the stem-pulling roller tube 2, and the rear sleeve 5 is connected to the drive mechanism that drives the stem-pulling roller tube 2 to rotate. The drive mechanism is a gear of the cutting table box 12, and the power of the gear comes from the reversing shaft.

[0024] In a relatively specific implementation, such as Figure 2 As shown, a shaft 6 is connected to the middle of the front end of the stalk-pulling roller tube 2. The shaft 6 is installed in the bearing seat 8 through a bearing 7. The outer surface of the bearing seat 8 is connected to the ear-picking frame through bolts 9.

[0025] The front end of the stem-pulling roller tube 2 has an annular groove, and the bearing seat 8 is placed in the annular groove. In this embodiment, the bearing 7 is preferably a deep groove ball bearing. The bolt 9 is a hinged bolt, one end of which is fixedly connected to the outer surface of the bearing seat 8 by a clamp and a bolt, and the other end of which is fixedly connected to the picking platform.

[0026] In a preferred embodiment, the front end of the shaft 6 is connected to a guide cone 10, and the surface of the guide cone 10 is provided with spiral ribs 11. The inverted cone 10 is used to make the corn stalks enter the picking roller 1 more smoothly, and the addition of spiral ribs 11 makes the speed of transporting the corn stalks into the picking roller 1 faster, prevents the corn stalks from entering the picking roller 1 at an angle, and reduces the phenomenon of kernels falling off due to the picking roller 1 hitting the tail of the corn.

[0027] Another typical embodiment of the present invention provides a corn harvester, wherein the corn harvesting and ear-picking mechanism of the present invention is installed on a self-propelled corn harvester. In the ear-picking roller group consisting of a pair of ear-picking rollers, the rear ends of the left and right ear-picking rollers are mounted on the header box 12, and the front ends are mounted on the ear-picking frame. The stalk-pulling plates in the two ear-picking rollers 1 are staggered, that is, any one stalk-pulling plate in one ear-picking roller 1 enters the corresponding groove formed by the two stalk-pulling plates of the other ear-picking roller 1.

[0028] The left drive shaft of the header transmits power to the reversing shaft and the front pulverizer. The reversing shaft drives the header housing gears to rotate. The right headstock housing transmits power to the sprocket and the ear-picking roller. The sprocket feeds the corn stalks into the header, and the ear-picking roller pulls the corn stalks down, separating the ears from the stalks. The stalks are pulverized and returned to the field by the pulverizer, while the ears pass through the header into the machine for the next step of the process.

[0029] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. For those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A corn harvesting and ear-picking mechanism, comprising one or more ear-picking roller groups, each ear-picking roller group consisting of two cooperating ear-picking rollers, each ear-picking roller including a stalk-pulling roller tube, characterized in that: The surface of the stem-pulling roller tube is provided with stem-pulling plates along its length direction. The stem-pulling plates include flat stem-pulling plates and serrated stem-pulling plates. The top surface of the flat stem-pulling plate is flat, and the top surface of the serrated stem-pulling plate is provided with serrated grooves. The flat stem-pulling plates and serrated stem-pulling plates are distributed alternately.

2. The corn harvesting and ear-picking mechanism according to claim 1, characterized in that: The number of both the flat stem-pulling plate and the serrated stem-pulling plate is 4.

3. The corn harvesting and ear-picking mechanism according to claim 1 or 2, characterized in that: The rear end of the stem-pulling roller tube is provided with a rear sleeve, which is connected to the drive mechanism that drives the stem-pulling roller tube to rotate.

4. The corn harvesting and ear-picking mechanism according to claim 3, characterized in that: The front end of the stalk-pulling roller is connected to a shaft, which is installed in a bearing seat via a bearing. The outer surface of the bearing seat is connected to the stalk-picking frame by bolts.

5. The corn harvesting and ear-picking mechanism according to claim 4, characterized in that: The front end of the shaft is connected to a guide cone, and the surface of the guide cone is provided with helical ribs.

6. The corn harvesting and ear-picking mechanism according to claim 1 or 5, characterized in that: In a tassel-picking roller assembly, the stem-pulling plates of the two tassel-picking rollers are assembled alternately.

7. A corn harvester, comprising the corn harvesting and ear-picking mechanism as described in any one of claims 1-6.

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