Ear picking device capable of harvesting common corn and silage corn and corn harvester

Abstract

The utility model relates to an ear picking device capable of harvesting common corn and silage corn and a corn harvester, the ear picking device comprises a mounting seat and an ear picking rack, and the ear picking rack is fixedly arranged; the mounting seat is fixedly mounted at one end of the ear picking rack, and a pair of common corn stem pulling rollers or a pair of silage corn stem pulling rollers are detachably mounted on the mounting seat; an ear picking plate is also detachably mounted on the ear picking rack, and one side of the ear picking plate extends to the upper part between the pair of common corn stem pulling rollers or the pair of silage corn stem pulling rollers. The corn silage header has the advantages of being simple in structure, reasonable in design, capable of harvesting common corn and silage corn, diversified in function and high in operation efficiency, a special silage header assembly does not need to be purchased independently, and cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of corn harvesters, in particular to an ear picking device capable of harvesting common corn and silage corn, and a corn harvester. Background Art

[0002] With the development of modern corn planting technology, the proportion of silage corn as a feed corn planting area is increasing year by year. Compared with general grain corn, silage corn has the advantages of high biological yield, good fiber quality, appropriate dry matter and water content, rich nutrition, fragrant smell, high digestibility, etc. It is an ideal feed for herbivorous animals. In recent years, the proportion of silage corn planting in developed agricultural and animal husbandry countries such as Europe and the United States is close to 30% to 40%, and domestic silage corn planting is in its infancy. With the emergence of new high-yield silage corn varieties, the development of silage corn in my country is becoming the dominant direction of corn planting. At present, silage corn is mainly harvested by self-propelled silage harvesters, but common silage harvesters have problems such as high price, single function, and short operating season, which leads to large initial investment for operators, long cost recovery cycle, and increased investment risk.

[0003] Existing corn harvesters harvest both the ears and stalks separately at the same time. The stalks are chopped and recycled by a chopping component, and the ears are completely recycled by a peeling machine. It is not possible to chop and recycle the entire corn plant including the ears. When harvesting corn, silage machines can only chop and recycle the entire corn plant, but cannot recycle the ears and stalks separately. Both methods have problems such as single function, high machine prices, and short operation cycles, which lead to large initial investment for the operator, long cost recovery cycle, and increased investment risk. If a corn harvester with both ears and stalks needs to harvest the entire plant of silage corn, the entire header assembly needs to be replaced, which is expensive and troublesome to replace. Utility Model Content

[0004] The utility model provides an ear picking device and a corn harvester capable of harvesting common corn and silage corn, aiming to solve the problems in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] An ear picking device capable of harvesting common corn and silage corn comprises a mounting seat and an ear picking stand, wherein the ear picking stand is fixedly arranged; the mounting seat is fixedly mounted on one end of the ear picking stand, and a pair of common corn stalk pulling rollers or a pair of silage corn stalk pulling rollers are detachably mounted on the mounting seat; an ear picking plate is also detachably mounted on the ear picking stand, one side of which extends to above the pair of common corn stalk pulling rollers or the pair of silage corn stalk pulling rollers.

[0007] The beneficial effects of the utility model are as follows: when harvesting common corn, a pair of common corn stem pulling rollers can be assembled on the mounting seat, and the pair of common corn stem pulling rollers can complete ear picking in cooperation with the ear picking plate;

[0008] When harvesting silage corn, a pair of silage corn stem pulling rollers can be assembled on the mounting seat, and the whole silage corn plant can be harvested under the action of the pair of silage corn stem pulling rollers. At this time, the ear picking plate needs to be removed, which has diverse functions and convenient harvesting.

[0009] The utility model has the advantages of simple structure and reasonable design, can harvest both common corn and silage corn, has diverse functions and high operation efficiency, and does not need to purchase a special silage harvesting platform assembly separately, thus greatly reducing the cost.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the pair of common corn stem pulling rollers or the pair of silage corn stem pulling rollers are rotatably connected to the mounting seats, respectively, and can rotate around their own axes.

[0012] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The pair of ordinary corn stem pulling rollers or the pair of silage corn stem pulling rollers rotate relative to each other to realize the ear picking operation.

[0013] Furthermore, the pair of common corn stem pulling rollers or the pair of silage corn stem pulling rollers are detachably rotatably connected to the mounting seat via bearings.

[0014] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The pair of ordinary corn stem pulling rollers or the pair of silage corn stem pulling rollers are rotatably connected to the mounting seat through bearings respectively, and the assembly is convenient.

[0015] Furthermore, one end of the pair of common corn stem pulling rollers or one end of the pair of silage corn stem pulling rollers are detachably hinged and positioned with the mounting seat respectively.

[0016] The beneficial effect of adopting the above-mentioned further scheme is simple structure and reasonable design. By using one end of the pair of ordinary corn stem pulling rollers or one end of the pair of silage corn stem pulling rollers respectively hinged to the mounting seat, the spacing between the other ends of the pair of ordinary corn stem pulling rollers or the other ends of the pair of silage corn stem pulling rollers can be achieved, so as to achieve better corn harvesting.

[0017] Furthermore, a pair of adjustment components are relatively installed at the other end of the ear picking stand, and the pair of adjustment components are respectively transmission connected to the other end of the pair of ordinary corn stem pulling rollers or the other end of the pair of silage corn stem pulling rollers, and are respectively used to adjust the distance between the other ends of the pair of ordinary corn stem pulling rollers or the other ends of the pair of silage corn stem pulling rollers.

[0018] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. Two adjustment components are used to respectively adjust the distance between the other ends of the pair of ordinary corn stem pulling rollers or the other ends of the pair of silage corn stem pulling rollers, which is easy to operate and saves time and effort.

[0019] Furthermore, each of the adjustment components includes an adjustment rod, which horizontally passes through the other end of the ear picking stand and can slide horizontally along its own axis and be positioned; one end of the adjustment rod is rotatably connected to the other end of the corresponding ordinary corn stem pulling roller or the other end of the pair of silage corn stem pulling rollers.

[0020] The beneficial effect of adopting the above-mentioned further scheme is that during adjustment, the adjustment rod is manually slid horizontally and drives the corresponding roller body to rotate to adjust the distance between the other ends of the pair of ordinary corn stalk pulling rollers or the other ends of the pair of silage corn stalk pulling rollers to meet the user's different ear picking needs and is easy to use.

[0021] Furthermore, a ring is movably sleeved on the other end of the corresponding ordinary corn stem pulling roller or the other end of the pair of silage corn stem pulling rollers, and one end of the adjusting rod is rotatably connected to the corresponding ring.

[0022] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the use of a sleeve ring to achieve a rotational connection between the adjustment rod and the other end of the corresponding roller body, which is convenient for assembly.

[0023] Furthermore, a threaded section is provided on the other end of the adjusting rod, and a locking nut is threadedly sleeved on the threaded section.

[0024] The beneficial effect of adopting the above further scheme is that when adjusting, after the adjusting rod slides to the set position, the locking nut is screwed to make it abut against the ear picking stand to achieve the positioning of the adjusting rod, which is easy to operate and saves time and effort.

[0025] Furthermore, the pair of ordinary corn stem pulling rollers respectively include a roller body one, and spiral ribs are fixedly mounted on the two roller bodies one; the pair of silage corn stem pulling rollers respectively include a roller body two, and a plurality of blades are fixedly mounted on the two roller bodies two at evenly spaced intervals along their own circumferences, and the plurality of blades extend along the axial direction of the roller body two.

[0026] The beneficial effect of adopting the above further scheme is that the above stem pulling roller structure is reasonably designed to harvest different corns and is easy to use.

[0027] Furthermore, the ear picking plate is a long strip-shaped plate structure, which extends from one end to the other end of the ear picking stand.

[0028] The beneficial effect of adopting the above further scheme is that the shape of the ear picking plate is reasonably designed so as to better cooperate with the stem pulling roller to realize the ear picking operation.

[0029] The utility model also relates to a corn harvester, comprising the above-mentioned ear picking device which can harvest common corn and silage corn.

[0030] The beneficial effect of adopting the above-mentioned further scheme is that the utility model also provides a corn harvester, which has a simple structure and a reasonable design. It can harvest both ordinary corn and silage corn, has diverse functions and high operating efficiency, and does not require the separate purchase of a dedicated silage harvesting table assembly, thereby greatly reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of the utility model when harvesting common corn;

[0032] Figure 2 This is a schematic diagram of the structure of a common corn stem pulling roller in the utility model;

[0033] Figure 3 This is a schematic diagram of the overall structure of the utility model when harvesting common corn;

[0034] Figure 4 It is a schematic diagram of the structure of the silage corn stem pulling roller in the utility model.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Mounting seat; 2. Ear picking stand; 3. Ordinary corn stalk pulling roller; 4. Silage corn stalk pulling roller; 5. Adjusting rod; 6. Ring; 7. Locking nut; 8. Ear picking plate; 9. Ear picking gear box. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] Example 1

[0042] like Figures 1 to 4 As shown, this embodiment provides an ear picking device that can harvest ordinary corn and silage corn, including a mounting seat 1 and an ear picking stand 2, wherein the ear picking stand 2 is fixedly arranged; the mounting seat 1 is fixedly installed at one end of the ear picking stand 2, and a pair of ordinary corn stalk pulling rollers 3 or a pair of silage corn stalk pulling rollers 4 are detachably installed on the mounting seat 1; the ear picking stand 2 is also detachably installed with an ear picking plate 8, one side of which extends to above the pair of ordinary corn stalk pulling rollers 3 or the pair of silage corn stalk pulling rollers 4.

[0043] When harvesting common corn, a pair of common corn stalk pulling rollers 3 can be assembled on the mounting seat 1, and the pair of common corn stalk pulling rollers 3 completes the ear picking with the cooperation of the ear picking plate 8 (refer to Figure 1 and Figure 2 );

[0044] When harvesting silage corn, a pair of silage corn stem pulling rollers 4 can be assembled on the mounting seat, and the whole silage corn plant can be harvested under the action of the pair of silage corn stem pulling rollers 4. At this time, the ear picking plate 8 needs to be removed, which has various functions and is convenient for harvesting (refer to Figure 3 and Figure 4 ).

[0045] Preferably, in this embodiment, an ear picking gear box 9 is also fixedly mounted on the mounting seat 1, and the two driving ends of the ear picking gear box 9 are detachably connected to one end of two roller bodies in a pair of ordinary corn stem pulling rollers 3 or a pair of silage corn stem pulling rollers 4, respectively, for driving the two roller bodies to rotate relative to each other.

[0046] It should be noted that the above-mentioned ear picking gear box 9 adopts the existing technology, and its specific structure and principle will not be described in detail here.

[0047] Preferably, in this embodiment, the pair of common corn stem pulling rollers 3 respectively include roller bodies 1, and the two roller bodies 1 are respectively fixedly sleeved with spiral ribs; the pair of silage corn stem pulling rollers 4 respectively include roller bodies 2, and the two roller bodies 2 are respectively fixedly installed with multiple blades at uniform intervals along their own circumferential directions, and the multiple blades respectively extend along the axial direction of the roller body 2. The above-mentioned stem pulling roller structure is reasonably designed to harvest different corns and is easy to use.

[0048] This embodiment has a simple structure and reasonable design, can harvest both ordinary corn and silage corn, has multiple functions, and has high operating efficiency. In addition, there is no need to purchase a dedicated silage harvesting platform assembly separately, which greatly reduces the cost.

[0049] Example 2

[0050] On the basis of Example 1, in this embodiment, the pair of ordinary corn stem pulling rollers 3 or the pair of silage corn stem pulling rollers 4 are rotatably connected to the mounting seat 1, respectively, and can rotate around their own axes.

[0051] The scheme has a simple structure and a reasonable design. The pair of ordinary corn stem pulling rollers 3 or the pair of silage corn stem pulling rollers 4 rotate relative to each other to achieve the ear picking operation.

[0052] Example 3

[0053] On the basis of Example 2, in this embodiment, the pair of common corn stem pulling rollers 3 or the pair of silage corn stem pulling rollers 4 are detachably rotatably connected to the mounting seat 1 via bearings, respectively.

[0054] The solution has a simple structure and a reasonable design. The pair of common corn stem pulling rollers 3 or the pair of silage corn stem pulling rollers 4 are rotatably connected to the mounting seats through bearings, respectively, and are easy to assemble.

[0055] Example 4

[0056] On the basis of any one of Examples 2 to 3, in this embodiment, one end of the pair of ordinary corn stem pulling rollers 3 or one end of the pair of silage corn stem pulling rollers 4 are respectively detachably hinged and positioned with the mounting seat 1.

[0057] This solution has a simple structure and a reasonable design. By hingedly connecting one end of the pair of ordinary corn stem pulling rollers 3 or one end of the pair of silage corn stem pulling rollers 4 to the mounting seat 1 respectively, a spacing between the other ends of the pair of ordinary corn stem pulling rollers 3 or the other ends of the pair of silage corn stem pulling rollers 4 can be achieved, so as to achieve better corn harvesting.

[0058] Based on the above scheme, taking a pair of ordinary corn stalk pulling rollers 3 as an example, bearings are rotatably installed on the two driving ends of the ear picking gear box 9, one end of the two ordinary corn stalk pulling rollers 3 is detachably connected to one end of the two hinges, and the other ends of the two hinges are fixedly connected to the outer rings of the two bearings.

[0059] When it is necessary to use a pair of silage corn stalk pulling rollers 4 to replace the above-mentioned pair of ordinary corn stalk pulling rollers 3, it is necessary to pre-distribute the two ordinary corn stalk pulling rollers 3 with two hinges, and then removably connect one end of the two silage corn stalk pulling rollers 4 with the two hinges.

[0060] Example 5

[0061] On the basis of Example 4, in this embodiment, a pair of adjustment components are relatively installed at the other end of the ear picking stand 2, and the pair of adjustment components are respectively connected to the other end of the pair of ordinary corn stem pulling rollers 3 or the other end of the pair of silage corn stem pulling rollers 4, and are used to adjust the distance between the other ends of the pair of ordinary corn stem pulling rollers 3 or the other ends of the pair of silage corn stem pulling rollers 4.

[0062] The solution has a simple structure and a reasonable design. Two adjustment components are used to respectively adjust the distance between the other ends of the pair of ordinary corn stem pulling rollers 3 or the other ends of the pair of silage corn stem pulling rollers 4. The operation is simple and time-saving.

[0063] Example 6

[0064] On the basis of Example 5, in this embodiment, each of the adjustment components includes an adjustment rod 5, which horizontally passes through the other end of the ear picking stand 2, and can slide horizontally along its own axis and be positioned; one end of the adjustment rod 5 is rotatably connected to the other end of the corresponding ordinary corn stem pulling roller 3 or the other end of the pair of silage corn stem pulling rollers 4.

[0065] During adjustment, the adjustment rod 5 is manually slid horizontally and the corresponding roller body is driven to rotate to adjust the distance between the other ends of the pair of ordinary corn stem pulling rollers 3 or the other ends of the pair of silage corn stem pulling rollers 4 to meet the different ear picking needs of users, which is easy to use.

[0066] Preferably, in this embodiment, each adjusting rod 5 is preferably a straight rod structure.

[0067] Example 7

[0068] On the basis of Example 6, in this embodiment, a ring 6 is movably mounted on the other end of the corresponding ordinary corn stem pulling roller 3 or the other end of the pair of silage corn stem pulling rollers 4, and one end of the adjusting rod 5 is rotatably connected to the corresponding ring 6.

[0069] This solution has a simple structure and a reasonable design. The sleeve ring 6 is used to realize the rotation connection between the adjusting rod 5 and the other end of the corresponding roller body, and the assembly is convenient.

[0070] Based on the above solution, the sleeve ring 6 can not only ensure the rotation of the corresponding roller body, but also realize the rotation connection of one end of the roller body adjusting rod 5.

[0071] Example 8

[0072] On the basis of any one of Embodiments 6 to 7, in this embodiment, a threaded section is provided on the other end of the adjusting rod 5, and a locking nut 7 is threadedly sleeved on the threaded section.

[0073] During adjustment, after the adjusting rod 5 slides to the set position, the locking nut 7 is screwed to make it abut against the ear picking stand 2 to achieve the positioning of the adjusting rod 5, which is easy to operate and saves time and effort.

[0074] Alternatively, the adjusting rod 5 may also adopt other suitable positioning methods, for example, a plurality of positioning holes may be evenly spaced along the axial direction of the adjusting rod 5, and a positioning pin may be inserted into any one of the positioning holes so that the positioning pin abuts against the ear picking stand 2 to achieve the positioning of the adjusting rod 5. In this case, the positioning hole may be a hole body that penetrates from top to bottom, or may not penetrate, and the positioning pin is preferably a T-shaped pin.

[0075] Example 9

[0076] On the basis of the above embodiments, in this embodiment, the ear picking plate 8 is a long strip plate-like structure, which extends from one end to the other end of the ear picking stand 2.

[0077] The shape of the ear picking plate 8 is reasonably designed so as to better cooperate with the stem pulling roller to achieve the ear picking operation.

[0078] Preferably, in this embodiment, the ear picking plate 8 can be detachably connected to the ear picking stand 2 by using a plurality of bolts.

[0079] Example 10

[0080] On the basis of the above embodiments, this embodiment further provides a corn harvester, including the ear picking device as described above that can harvest ordinary corn and silage corn.

[0081] The present embodiment also provides a corn harvester, which has a simple structure and reasonable design. It can harvest both ordinary corn and silage corn, has multiple functions, and has high operating efficiency. There is no need to purchase a dedicated silage harvesting platform assembly separately, which greatly reduces costs.

[0082] The working principle of the utility model is as follows:

[0083] When harvesting common corn, a pair of common corn stem pulling rollers 3 can be assembled on the mounting seat 1, and the ear picking plate 8 can be assembled at the same time. At this time, the pair of common corn stem pulling rollers 3 can complete ear picking with the cooperation of the ear picking plate 8;

[0084] When harvesting silage corn, a pair of silage corn stem pulling rollers 4 can be assembled on the mounting seat, and the whole silage corn plant can be harvested under the action of the pair of silage corn stem pulling rollers 4. At this time, the ear picking plate 8 needs to be removed, which has various functions and is convenient for harvesting.

[0085] The utility model has the advantages of convenient and quick adjustment and fast switching of states. The ear picking device provided by the utility model enables the corn harvester with both stems and ears to harvest both ordinary corn and silage corn, thereby increasing product functions, extending the operation cycle, and improving the income of the operator; and there is no need to purchase a dedicated silage harvesting table assembly separately, thus saving costs for users.

[0086] It should be noted that all electronic components involved in the present invention adopt the existing technology, and the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is the existing technology.

[0087] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0088] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ear picking device capable of harvesting common corn and silage corn, characterized in that: The invention comprises a mounting seat (1) and an ear picking stand (2), wherein the ear picking stand (2) is fixedly arranged; the mounting seat (1) is fixedly mounted on one end of the ear picking stand (2), and a pair of common corn stalk pulling rollers (3) or a pair of silage corn stalk pulling rollers (4) are detachably mounted on the mounting seat (1); an ear picking plate (8) is also detachably mounted on the ear picking stand (2), one side of which extends to the upper part between the pair of common corn stalk pulling rollers (3) or the pair of silage corn stalk pulling rollers (4).

2. The ear picking device for harvesting common corn and silage corn according to claim 1, characterized in that: The pair of common corn stem pulling rollers (3) or the pair of silage corn stem pulling rollers (4) are respectively rotatably connected to the mounting seat (1), and can respectively rotate around their own axial directions.

3. The ear picking device for harvesting common corn and silage corn according to claim 2, characterized in that: The pair of common corn stem pulling rollers (3) or the pair of silage corn stem pulling rollers (4) are detachably rotatably connected to the mounting seat (1) via bearings.

4. The ear picking device capable of harvesting common corn and silage corn according to claim 2, characterized in that: One end of the pair of common corn stem pulling rollers (3) or one end of the pair of silage corn stem pulling rollers (4) are respectively detachably hinged to and positioned on the mounting seat (1).

5. The ear picking device capable of harvesting common corn and silage corn according to claim 4, characterized in that: A pair of adjustment components are relatively installed at the other end of the ear picking stand (2), and the pair of adjustment components are respectively connected to the other end of the pair of ordinary corn stem pulling rollers (3) or the other end of the pair of silage corn stem pulling rollers (4) for transmission, and are used to adjust the distance between the other ends of the pair of ordinary corn stem pulling rollers (3) or the other ends of the pair of silage corn stem pulling rollers (4).

6. The ear picking device capable of harvesting common corn and silage corn according to claim 5, characterized in that: Each of the adjustment components comprises an adjustment rod (5), which horizontally passes through the other end of the ear picking stand (2) and can slide horizontally and position along its own axis; one end of the adjustment rod (5) is rotatably connected to the other end of the corresponding ordinary corn stem pulling roller (3) or the other end of the pair of silage corn stem pulling rollers (4).

7. The ear picking device capable of harvesting common corn and silage corn according to claim 6, characterized in that: A sleeve (6) is movably sleeved on the other end of the corresponding common corn stem pulling roller (3) or the other end of the pair of silage corn stem pulling rollers (4), and one end of the adjustment rod (5) is rotatably connected to the corresponding sleeve (6).

8. The ear picking device capable of harvesting common corn and silage corn according to claim 6, characterized in that: The other end of the adjusting rod (5) is provided with a threaded section, and a locking nut (7) is threadedly sleeved on the threaded section.

9. The ear picking device for harvesting common corn and silage corn according to any one of claims 1 to 8, characterized in that: The pair of ordinary corn stem pulling rollers (3) respectively include a roller body one, on which the two roller bodies one are respectively fixedly sleeved with spiral ribs; the pair of silage corn stem pulling rollers (4) respectively include a roller body two, on which the two roller bodies two are respectively fixedly mounted with a plurality of blades at even intervals along their own circumferences, and the plurality of blades respectively extend along the axial direction of the roller body two.

10. A corn harvester, characterized in that: The invention comprises an ear picking device capable of harvesting common corn and silage corn as described in any one of claims 1 to 9.

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