Stem pulling and ear picking mechanism, header device and corn harvester

Abstract

The utility model belongs to the technical field of agricultural mechanical equipment, and particularly relates to a stem pulling and ear picking mechanism, a header device and a corn harvester, the stem pulling and ear picking mechanism comprises a stem pulling and ear picking part, a plurality of first grass cutters and an adjusting connecting assembly, the stem pulling and ear picking part is arranged between stem pulling rollers arranged at intervals, and the first grass cutters are arranged between the stem pulling rollers; the first grass cutter and the stem pulling roller are arranged in an aligned manner, and a first grass cutting part is formed between the first grass cutter and the stem pulling roller; the adjusting connecting assembly is used for driving the stem pulling roller and the first straw cutter to move synchronously so as to adjust the size of the stem pulling and ear picking part. Before field operation is carried out, the size of the stem pulling and ear picking part needs to be adjusted according to the thickness of corn straw, in the straw pulling and ear picking device, a first straw cutter and a stem pulling roller are connected into a whole through an adjusting connecting assembly to achieve overall adjustment of the first straw cutter and the stem pulling roller, and therefore the position of the first straw cutter is adjusted while the stem pulling and ear picking part is adjusted; the size of the first straw cutter is not changed, so that the adjusting process of the stem pulling roller and the straw cutter is simplified, and the working efficiency is improved.

Description

Technical Field

[0001] This application belongs to the technical field of agricultural machinery and equipment, specifically relating to a stem-pulling and ear-picking mechanism, a header device, and a corn harvester. Background Technology

[0002] A corn harvester is an agricultural machine used for harvesting corn. The header is a crucial component of the harvester, primarily used for corn ear picking and stalk processing. The core component of the header is the stalk-pulling and ear-picking mechanism, which consists of a pair of opposing rotating pull rollers. During operation in the field, the corn crop enters between the two pull rollers to compress and tear the corn stalks, completing the ear picking process. Because of the presence of many weeds in the field, these weeds easily become entangled on the pull rollers during rotation, affecting the efficiency of the stalk-pulling and ear-picking mechanism and even causing header malfunctions.

[0003] Existing technologies often involve adding a grass cutter to remove weeds tangled on the stalk-pulling rollers. However, with these technologies, the distance between the two rollers needs to be adjusted according to the thickness of the corn stalks before operation. Since the grass cutter needs to remove weeds from the rollers, its position also needs to be adjusted simultaneously, making the entire adjustment process quite cumbersome. Utility Model Content

[0004] The purpose of this application is to provide a stalk pulling and ear picking mechanism, a header device, and a corn harvester, which simplifies the adjustment process of the stalk pulling roller and the grass cutting blade.

[0005] To achieve the above objectives, this application provides a stem-pulling and ear-picking mechanism, comprising:

[0006] The stem-pulling and spike-picking section is located between the spaced-apart stem-pulling rollers;

[0007] A plurality of first grass-cutting blades, wherein the first grass-cutting blades are arranged in alignment with the stem-pulling roller and form a first grass-cutting section with each other;

[0008] Adjust the connecting assembly to drive the stem-pulling roller and the first grass-cutting blade to move synchronously to adjust the size of the stem-pulling and picking section.

[0009] In some embodiments, the regulating connection component includes:

[0010] The first connector is sleeved on the head of the stem-pulling roller and connected to one end of the first grass-cutting blade;

[0011] The second connector is sleeved on the tail of the stem-pulling roller and connected to the other end of the first grass-cutting blade;

[0012] An adjusting element is driven to connect with the first connecting element and / or the second connecting element.

[0013] In some embodiments, the stem-pulling and ear-picking mechanism further includes an ear-picking box, the tail of the stem-pulling roller is drivenly connected to the output shaft of the ear-picking box and hinged to the output shaft of the ear-picking box, and the adjusting member is used to drive the tail of the stem-pulling roller to rotate at the hinge point between the stem-pulling roller and the output shaft of the ear-picking box.

[0014] In some embodiments, the stem-pulling and ear-picking mechanism further includes an ear-picking frame, the stem-pulling roller and the first grass-cutting blade are both arranged inside the ear-picking frame, and the adjusting member includes an adjusting screw that passes through the ear-picking frame from the outside to the inside. One end of the adjusting screw located inside the ear-picking frame is connected to the first connecting member, and the adjusting screw is connected to the ear-picking frame by fasteners.

[0015] In some embodiments, the first connector has a receiving groove, and one end of the adjusting screw located inside the picking frame extends into the receiving groove and is connected to the groove wall of the receiving groove by a pin.

[0016] In some embodiments, the first grass cutter has a waist-shaped hole, and both the first connector and the second connector have circular holes. A fastener is inserted between the circular hole and the waist-shaped hole, and the length and width of the waist-shaped hole are both greater than the diameter of the circular hole.

[0017] In some embodiments, the stem-pulling and ear-picking mechanism further includes:

[0018] An inlet cone, the large-diameter end of which is connected to the head of the stem-pulling roller;

[0019] A second grass-cutting blade is formed between the second grass-cutting blade and the conical surface of the guide cone;

[0020] The third connector connects the second grass cutter to the guide cone.

[0021] In some embodiments, the third connector is fitted onto the small-diameter end of the inlet cone and connected to one end of the second grass cutter, the other end of which is connected to the adjustment connection assembly.

[0022] A second aspect of this application provides a cutting platform device, including the stem-pulling and spike-picking mechanism described above.

[0023] A third aspect of this application provides a corn harvester, including the header device described above.

[0024] The above technical solutions provide the following beneficial effects of the stalk-pulling and ear-picking mechanism, header device, and corn harvester:

[0025] Before corn harvesters operate in the field, the size of the stalk-pulling and ear-picking section needs to be adjusted according to the thickness of the corn stalks, i.e., the spacing between the spaced-apart stalk-pulling rollers. In this application, the first cutting blade and the stalk-pulling rollers are connected as a whole by adjusting the connecting assembly to achieve overall adjustment of the two. In other words, the position of the first cutting blade is adjusted at the same time as the size of the stalk-pulling and ear-picking section is adjusted. It can be seen that the position of the first cutting blade is adjusted at the same time as the adjustment of the stalk-pulling and ear-picking section is completed, while ensuring that the size of the first cutting blade remains unchanged, thereby simplifying the adjustment process of the stalk-pulling rollers and the cutting blade, and thus improving the operating efficiency.

[0026] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0028] Figure 1 This is a schematic diagram of the stem-pulling and ear-picking mechanism according to a specific embodiment of this application;

[0029] Figure 2 This is a top view of the stem-pulling and ear-picking mechanism according to a specific embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the adjustment connection component according to a specific embodiment of this application;

[0031] Figure 4 for Figure 3 Cross-sectional view of AA in the middle;

[0032] Figure 5 This is a structural schematic diagram of the first connector according to a specific embodiment of this application.

[0033] Explanation of reference numerals in the attached figures

[0034] 100. Stem-pulling and ear-picking mechanism; 1. Stem-pulling roller; 2. First grass-cutting blade; 3. Stem-pulling and ear-picking section; 4. First connecting piece; 41. First bearing section; 42. Base section; 43. Receiving groove; 44. First ear plate section; 5. Second connecting piece; 6. Adjusting piece; 7. Ear-picking box; 8. Ear-picking frame; 9. First waist-shaped hole; 10. Second waist-shaped hole; 11. Second circular hole; 12. Third connecting piece; 13. Guide cone; 14. Second grass-cutting blade. Detailed Implementation

[0035] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0036] The following description, with reference to the accompanying drawings, outlines the terminology of the stalk-pulling and ear-picking mechanism 100, the header device, and the corn harvester according to this application.

[0037] like Figure 1 and Figure 2 As shown, a specific embodiment of this application provides a stem-pulling and ear-picking mechanism 100, including a stem-pulling and ear-picking section 3, a plurality of first grass-cutting blades 2, and an adjustment and connecting assembly. The stem-pulling and ear-picking section 3 is disposed between stem-pulling rollers 1 arranged at intervals. The first grass-cutting blades 2 are aligned with the stem-pulling rollers 1 and form first grass-cutting sections between them. The adjustment and connecting assembly is used to drive the stem-pulling rollers 1 and the first grass-cutting blades 2 to move synchronously to adjust the size of the stem-pulling and ear-picking section 3.

[0038] A corn harvester is an agricultural machine used for harvesting corn. The header device is an important component of the corn harvester, mainly used for corn ear picking and straw processing. The core component of the header device is the stalk-pulling and ear-picking mechanism 100. During field operations, corn crops enter the stalk-pulling and ear-picking section 3, and two stalk-pulling rollers 1 rotate relative to each other to achieve corn ear picking and straw processing. Besides corn crops, weeds in the field also enter the stalk-pulling and ear-picking section 3. As the stalk-pulling rollers 1 rotate, the weeds become entangled on them, covering the toothed components on the surface of the rollers, thus affecting the working effect of the rollers and consequently the efficiency of the header device and the corn harvester, and may even cause malfunctions. In this application, a first cutting blade 2 is set to form a first cutting section with the roller shaft surface of the stalk-pulling roller 1 to process the weeds entangled on the rollers 1, thereby ensuring the working efficiency of the stalk-pulling and ear-picking mechanism 100.

[0039] Furthermore, the thickness of corn stalks varies in different regions. In this application, by setting an adjustment connecting component to drive the two stalk pulling rollers 1 to move closer or further apart to adjust the size of the stalk pulling and ear picking part 3, it can be adapted to the harvesting of corn crops of different thicknesses, thereby improving the applicability of the stalk pulling and ear picking mechanism 100.

[0040] Furthermore, during the adjustment of the stem-pulling and ear-picking section 3, the first grass-cutting blade 2 and the stem-pulling roller 1 move synchronously as a whole. In fact, the adjustment of the stem-pulling and ear-picking section 3 can also be achieved by adjusting the first grass-cutting blade 2 and the stem-pulling roller 1 separately. Taking the enlargement of the stem-pulling and ear-picking section 3 as an example: First, move the first grass-cutting blade 2 away from the stem-pulling roller 1 to provide sufficient adjustment space for the stem-pulling roller 1. Then, adjust the stem-pulling roller 1 so that the size of the stem-pulling and ear-picking section 3 meets the requirements. Finally, adjust the first grass-cutting blade 2 until the first grass-cutting section formed with the stem-pulling roller 1 meets the requirements.

[0041] It is evident that adjusting the first cutting blade 2 and the stem-pulling roller 1 separately is not only cumbersome, but also prone to interference or excessive distance between them if the operator forgets to adjust the first cutting blade 2 or fails to adjust it properly. This results in the stem-pulling roller 1 failing to collide with the first cutting blade 2 or the first cutting section failing to cut weeds. Therefore, in this application, the stem-pulling roller 1 and the first cutting blade 2 are integrated by adjusting the connecting assembly and driven to move synchronously. This simplifies the steps of adjusting the size of the stem-pulling and picking section 3, avoids blade collision, ensures that the first cutting section can cut weeds, and thus improves the reliability and convenience of the stem-pulling and picking mechanism 100.

[0042] It should be noted that the structure and function of the stem-pulling roller 1 are well known to those skilled in the art, and the structure of the stem-pulling roller 1 itself is not a core inventive point of this application, so it will not be described in detail here.

[0043] like Figure 3 and Figure 4 As shown, in some embodiments, the adjusting connection assembly includes a first connector 4, a second connector 5, and an adjusting member 6, wherein the first connector 4 is sleeved on the head of the stem-pulling roller 1 and connected to one end of the first grass-cutting blade 2; the second connector 5 is sleeved on the tail of the stem-pulling roller 1 and connected to the other end of the first grass-cutting blade 2; and the adjusting member 6 is drivenly connected to the first connector 4 and / or the second connector 5.

[0044] Since the stem-pulling roller 1 needs to rotate during operation, the adjusting connecting assembly needs to connect the stem-pulling roller 1 and the first grass-cutting blade 2 while avoiding interference with the rotation of the stem-pulling roller 1. Both the first connecting member 4 and the second connecting member 5 include bearing portions. Specifically, the inner rings of the first connecting member 4 and the second connecting member 5 are sleeved on the stem-pulling roller 1, and the outer rings of both are connected to the first grass-cutting blade 2. The inner and outer rings of the bearing portions can rotate relative to each other using ball bearings; that is, the inner ring of the bearing portion rotates synchronously with the stem-pulling roller 1, while the outer ring of the bearing portion remains relatively stationary with the first grass-cutting blade 2. Therefore, the first connecting member 4 and the second connecting member 5 can achieve the connection between the stem-pulling roller 1 and the first grass-cutting blade 2 without interfering with the rotation of the stem-pulling roller 1.

[0045] like Figure 1 and Figure 2 As shown, in some embodiments, the cutting platform device further includes a picking box 7, the tail of the pulling roller 1 is connected to the output shaft of the picking box 7 and is hinged to the output shaft of the picking box 7, and the adjusting member is used to drive the tail of the pulling roller 1 to rotate at the hinge point between the pulling roller 1 and the output shaft of the picking box 7.

[0046] Specifically, the stem pulling and ear picking mechanism 100 also includes an ear picking frame 8, with the stem pulling roller 1 and the first grass cutting knife 2 arranged inside the ear picking frame 8. The adjusting component includes an adjusting screw that runs through the ear picking frame 8 from the outside to the inside. One end of the adjusting screw located inside the ear picking frame 8 is connected to the first connecting member 4, and the adjusting screw and the ear picking frame 8 are connected by fasteners.

[0047] The stalk-pulling roller 1 can be connected to the output shaft of the ear-picking box 7 in the horizontal plane. After the operator removes the fasteners so that the adjusting screw can be pulled, the first connecting piece 4 is pulled by the adjusting screw to drive the heads of the two stalk-pulling rollers 1 away from each other, or the first connecting piece 4 is pushed by the adjusting screw to drive the heads of the two stalk-pulling rollers 1 closer to each other, thereby adjusting the size of the inlet of the stalk-pulling and ear-picking part 3, and thus making it suitable for different corn crops.

[0048] It should be noted that the connection structure between the stem-pulling roller 1 and the output shaft of the ear-picking box 7 is well known to those skilled in the art and is not a core inventive point of this application, so it will not be described in detail here.

[0049] like Figure 5 As shown, in some embodiments, the first connecting member 4 includes a first bearing portion 41 and a base portion 42. The inner ring of the first bearing portion 41 is sleeved on the stem pulling roller 1, and the base portion 42 connects the outer ring of the first bearing portion 41, the first grass cutting blade 2 and the adjusting screw to improve the integrity of each component.

[0050] Specifically, a receiving groove 43 is provided on the side of the base part 42 away from the first bearing part 41. One end of the adjusting screw located inside the ear-picking frame 8 extends into the receiving groove and is connected to the groove wall of the receiving groove 43 by a pin, so as to avoid interference between the translation of the adjusting screw and the rotation of the stem-pulling roller 1. At the same time, the adjusting screw extending into the receiving groove 43 increases the adjustment range of the adjusting screw on the stem-pulling roller 1 within the stroke range, thereby improving the applicability of the stem-pulling and ear-picking mechanism 100 and the compactness of the stem-pulling and ear-picking mechanism 100, thereby improving the practicality of the stem-pulling and ear-picking mechanism 100.

[0051] Furthermore, the base portion 42 is provided with a first ear plate portion 44, which is detachably connected to the first grass cutter 2 by fasteners.

[0052] Optionally, the second connector 5 includes a second bearing portion and a second ear plate portion. The second connector 5 does not need to be connected to the adjusting screw. The inner ring of the second bearing portion is sleeved on the stem pulling roller 1. The second ear plate portion is connected to the outer ring of the second bearing portion. The second ear plate portion is detachably connected to the first grass cutting blade 2 by fasteners.

[0053] like Figure 1 and Figure 2 As shown, in some embodiments, the back of the first grass-cutting knife 2 is detachably connected to the picking frame 8, and the blade of the first grass-cutting knife 2 is parallel to the axis of the stem-pulling roller 1 and faces the stem-pulling roller 1.

[0054] Specifically, the first grass cutter 2 is relatively long. The connection between the first grass cutter 2 and the picking frame 8 is used to support the first grass cutter 2 and ensure its stability during operation. The first grass cutter 2 and the picking frame 8 are generally connected by fasteners.

[0055] Furthermore, the first grass-cutting blade 2 has multiple first waist-shaped holes 9, and the picking frame 8 has multiple first circular holes corresponding to each other. The first circular holes and the first waist-shaped holes 9 are connected one-to-one. During the adjustment of the stem-pulling and picking section 3, it is necessary to first separate the first grass-cutting blade 2 and the picking frame 8 to release the restriction of the picking frame 8 on the first grass-cutting blade 2. After the first grass-cutting blade 2 is adjusted with the stem-pulling roller 1, there will be a situation where the fastener cannot pass through the first grass-cutting blade 2 and the picking frame 8. Therefore, by setting the first waist-shaped holes 9 on the first grass-cutting blade 2, the first grass-cutting blade 2 can still be connected to the picking frame 8 after adjustment. That is, the first circular holes on the picking frame 8 are always within the coverage area of ​​the first waist-shaped holes 9.

[0056] Furthermore, the first waist-shaped hole 9 on the first grass cutter 2 is also used to adjust the size of the first grass cutting section. In other words, the first grass cutter 2 moves away from or closer to the stem pulling roller 1 through the connection position of the first waist-shaped hole 9 and the first circular hole on the picking frame 8. It can be seen that setting the first waist-shaped hole 9 on the first grass cutter 2 can also adjust the first grass cutting section according to the thickness of the weeds in the field, thereby improving the efficiency of removing various weeds.

[0057] Furthermore, the first grass cutter 2 is provided with a second oblong hole 10, and the first connector 4 and the second connector 5 are both provided with second circular holes 11. A fastener passes through the second circular hole 11 and the second oblong hole 10. The length and width of the second oblong hole 10 are both greater than the diameter of the second circular hole 11. Before moving the first grass cutter 2 to adjust the size of the first cutting part, the first grass cutter 2 needs to be separated from the first connector 4 and the second connector 5. However, after moving the first grass cutter 2 to adjust the size of the first cutting part, the fastener may not be able to pass through the first grass cutter 2 and the first connector 4 and the second connector 5. Therefore, by providing the second oblong hole 10 on the first grass cutter 2, the first grass cutter 2 can still be connected to the first connector 4 and the second connector 5 after adjustment. That is, the second circular hole 11 on the first connector 4 and the second connector 5 is always within the coverage area of ​​the second oblong hole 10.

[0058] It should be noted that the dimensions of the first oblong hole 9 and the second oblong hole 10 are set according to actual needs. Those skilled in the art can also adjust the oblong hole to an arc-shaped hole according to actual needs.

[0059] like Figure 1 and Figure 2 As shown, in some embodiments, the stem pulling and picking mechanism 100 further includes an inlet cone 13, a second grass cutter 14, and a third connector 12, wherein the large-diameter end of the inlet cone 13 is connected to the head of the stem pulling roller 1; a second grass cutting section is formed between the second grass cutter 14 and the conical surface of the inlet cone 13; and the third connector 12 connects the second grass cutter 14 and the inlet cone 13.

[0060] Specifically, the guide cone 13 is used to guide the corn crop into the stem pulling and ear picking section 3, and the second grass cutting section is used to cut off the weeds wrapped around the guide cone 13 to ensure the working efficiency of the stem pulling and ear picking mechanism 100.

[0061] Furthermore, the third connector 12 is fitted onto the small-diameter end of the guide cone 13 and connected to one end of the second grass cutter 14. The other end of the second grass cutter 14 is connected to the adjustment connection assembly. In other words, the third connector 12 and the second connector 5 connect the second grass cutter 14 and the guide cone 13 into one unit. It can be seen that the second grass cutter 14, the first grass cutter 2, the guide cone 13 and the stem pulling roller 1 can be adjusted synchronously, thereby simplifying the steps of adjusting the stem pulling and picking part 3 and improving the convenience of the stem pulling and picking mechanism 100.

[0062] A specific embodiment of this application provides a header device, including a stem-pulling and ear-picking mechanism 100. Since the header device employs all embodiments of the stem-pulling and ear-picking mechanism 100, it possesses all the beneficial effects of the latter.

[0063] Specific embodiments of this application provide a corn harvester including a header device. Since the corn harvester employs all embodiments of the header device, it possesses all the beneficial effects of a header device.

[0064] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "front," "back," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0065] In the description of this application, 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between components; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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 this application. 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.

[0068] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A stem-pulling and scion-picking mechanism, characterized in that, include: The stem-pulling and spike-picking section (3) is set between the spaced stem-pulling rollers (1); A plurality of first grass-cutting blades (2), the first grass-cutting blades (2) are arranged opposite to the stem-pulling roller (1) and form a first grass-cutting section between them; Adjust the connecting assembly to drive the stem-pulling roller (1) and the first grass-cutting blade (2) to move synchronously to adjust the size of the stem-pulling and picking section (3).

2. The stem-pulling and spike-picking mechanism according to claim 1, characterized in that, The regulating connection component includes: The first connector (4) is sleeved on the head of the stem-pulling roller (1) and connected to one end of the first grass-cutting blade (2); The second connector (5) is sleeved on the tail of the stem-pulling roller (1) and connected to the other end of the first grass-cutting blade (2); Adjustment member (6) is driven to connect with the first connector (4) and / or the second connector (5).

3. The stem-pulling and spike-picking mechanism according to claim 2, characterized in that, The stem pulling and ear picking mechanism (100) also includes an ear picking box (7). The tail of the stem pulling roller (1) is connected to the output shaft of the ear picking box (7) and is hinged to the output shaft of the ear picking box (7). The adjusting member (6) is used to drive the tail of the stem pulling roller (1) to rotate at the hinge point between the stem pulling roller (1) and the output shaft of the ear picking box (7).

4. The stem-pulling and spike-picking mechanism according to claim 2, characterized in that, The stem pulling and ear picking mechanism (100) also includes an ear picking frame (8). The stem pulling roller (1) and the first grass cutting knife (2) are both arranged inside the ear picking frame (8). The adjusting component includes an adjusting screw that runs through the ear picking frame (8) from the outside to the inside. One end of the adjusting screw located inside the ear picking frame (8) is connected to the first connecting member (4). The adjusting screw and the ear picking frame (8) are connected by fasteners.

5. The stem-pulling and scion-picking mechanism according to claim 4, characterized in that, The first connector (4) has a receiving groove (43), and one end of the adjusting screw located inside the ear-picking frame (8) extends into the receiving groove and is connected to the groove wall of the receiving groove (43) by a pin.

6. The stem-pulling and spike-picking mechanism according to claim 2, characterized in that, The first grass cutter (2) has a waist-shaped hole, and the first connector (4) and the second connector (5) both have circular holes. Fasteners are inserted between the circular holes and the waist-shaped holes. The length and width of the waist-shaped holes are both greater than the diameter of the circular holes.

7. The stem-pulling and scion-picking mechanism according to any one of claims 1 to 6, characterized in that, The stem-pulling and scion-picking mechanism (100) also includes: An inlet cone (13) is introduced, the large-diameter end of which is connected to the head of the stem-pulling roller (1); A second grass-cutting blade (14) is formed between the second grass-cutting blade (14) and the conical surface of the guide cone (13); The third connector (12) connects the second grass cutter (14) to the guide cone (13).

8. The stem-pulling and spike-picking mechanism according to claim 7, characterized in that, The third connector (12) is sleeved on the small diameter end of the inlet cone (13) and connected to one end of the second grass cutter (14), and the other end of the second grass cutter (14) is connected to the adjustment connection assembly.

9. A cutting platform device, characterized in that, Includes the stem-pulling and scion-picking mechanism (100) according to any one of claims 1 to 8.

10. A corn harvester, characterized in that, Includes the cutting platform device according to claim 9.

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