Variable diameter combination stalk pulling roller and corn harvester

Abstract

This utility model relates to a variable-diameter combined stalk-pulling roller and a corn harvester. The variable-diameter combined stalk-pulling roller includes two parallel stalk-pulling roller bodies, both rotatably mounted in opposite directions. At least four stalk-pulling blades are fixedly connected to each of the two roller bodies. Each stalk-pulling blade is circumferentially evenly distributed on its corresponding roller body, extending along the length of the roller body. A portion of the stalk-pulling blades on both roller bodies have a chamfered first inclined surface at one end, while the remaining blades have a chamfered second inclined surface at one end. The inclination angle of the first inclined surface is greater than that of the second inclined surface, and the first and second inclined surfaces on the same roller body are alternately distributed. This utility model can effectively reduce corn stalk breakage while ensuring strong stalk-pulling capacity, thus reducing the overall machine load.

Description

Technical Field

[0001] This utility model relates to the field of harvester technology, and in particular to a variable diameter combined stalk pulling roller and a corn harvester. Background Technology

[0002] Most existing plate headers are equipped with multi-faceted stalk pulling rollers (usually hexagonal). Each ear-picking unit contains two stalk pulling rollers that rotate in opposite directions. To ensure that the straw entering the ear-picking channel can be effectively pulled down by the stalk pulling rollers, each stalk pulling roller is designed with multiple sets of stalk pulling blades. During assembly, the stalk pulling blades on the two stalk pulling rollers are staggered to squeeze and deform the straw entering the ear-picking channel, thereby pulling the straw down.

[0003] Existing stalk-pulling roller structures typically use equal-height stalk-pulling blades. When the stalk enters the stalk-pulling roller from the front guide cone, the space becomes drastically reduced, and the thicker part of the corn stalk at the base needs to withstand greater compressive force as it enters the ear-picking channel. This can easily lead to corn stalk breakage, increasing the load on the harvester. To address this, existing technologies often use a large angled structure on the front side of the stalk-pulling blades. However, this structure results in a large gap between the front blades of the two stalk-pulling rollers, leading to poor stalk-pulling efficiency. Utility Model Content

[0004] This utility model provides a variable diameter combined stalk pulling roller and a corn harvester, which can effectively reduce corn stalk breakage and reduce the overall machine load while ensuring strong stalk pulling ability.

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

[0006] This utility model provides a variable diameter combined stem-pulling roller, including two parallel stem-pulling roller bodies. The two stem-pulling roller bodies are rotatably installed and rotate in opposite directions. At least four stem-pulling blades are fixedly connected to each of the two stem-pulling roller bodies. Each stem-pulling blade is evenly distributed circumferentially on the corresponding stem-pulling roller body. Each stem-pulling blade extends along the length direction of the stem-pulling roller body. One end of some of the stem-pulling blades on the two stem-pulling roller bodies is chamfered to form a first inclined surface, and one end of the other stem-pulling blades is chamfered to form a second inclined surface. The inclination angle of the first inclined surface toward one end of the stem-pulling roller body is greater than the inclination angle of the second inclined surface. The first inclined surfaces and the second inclined surfaces on the same stem-pulling roller body are alternately distributed.

[0007] The beneficial effects of this invention are as follows: both the first and second inclined surfaces can guide the material, and the pulling blades of the second inclined surface with a smaller inclination angle can ensure strong and effective material transport, while the pulling blades of the first inclined surface with a larger inclination angle can reduce material breakage. Thus, while ensuring strong pulling capacity, it can effectively reduce corn stalk breakage and reduce the overall machine load. The inclination angle of the first and second inclined surfaces refers to the included angle between the openings towards one end of the pulling roller body.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the length of the first inclined plane is one-third to one-half the length of the stem leaf, and the length of the second inclined plane is one-sixth the length of the first inclined plane.

[0010] Furthermore, the number of stem-pulling blades on the same stem-pulling roller body is four, six, eight, or ten.

[0011] Furthermore, each of the aforementioned stem-pulling leaves is equipped with a serrated strong-pulling section at the other end.

[0012] Furthermore, a strong tension rib is provided between the other ends of two adjacent stem-pulling blades, and each of the strong tension ribs is fixedly connected to the corresponding stem-pulling roller body.

[0013] Furthermore, one end of each of the aforementioned tensile ribs is chamfered to form a guide surface.

[0014] Furthermore, the stem-pulling blades on the two stem-pulling rollers are arranged in an alternating pattern.

[0015] Furthermore, one end of each of the two pull-stem rollers is rotatably connected to a bearing mounting seat.

[0016] Furthermore, one end of each of the two pull-stem rollers is coaxially and fixedly connected with a guide cone.

[0017] This utility model also provides a corn harvester, including the aforementioned variable diameter combined stalk pulling roller. Attached Figure Description

[0018] Figure 1 This is an isometric view of the variable diameter combined pull roller of this utility model;

[0019] Figure 2 For the present utility model Figure 1 First partial structural diagram;

[0020] Figure 3 For the present utility model Figure 1 The second local structural diagram;

[0021] Figure 4 This is a side view of the variable diameter combined stem-pulling roller of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Stem-pulling roller body; 2. Stem-pulling blades; 21. First inclined surface; 22. Second inclined surface; 3. Sawtooth strong pulling section; 4. Strong pulling rib; 41. Guide surface; 5. Bearing mounting seat; 6. Guide cone. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] Example 1

[0026] like Figures 1-4 This utility model embodiment provides a variable diameter combined stem-pulling roller, including two parallel stem-pulling roller bodies 1. The two stem-pulling roller bodies 1 are rotatably installed and rotate in opposite directions. At least four stem-pulling blades 2 are fixedly connected to each of the two stem-pulling roller bodies 1. Each stem-pulling blade 2 is evenly distributed circumferentially on the corresponding stem-pulling roller body 1. Each stem-pulling blade 2 extends along the length direction of the stem-pulling roller body 1. One end of some of the stem-pulling blades 2 on the two stem-pulling roller bodies 1 is chamfered to form a first inclined surface 21, and one end of the other stem-pulling blades 2 is chamfered to form a second inclined surface 22. The inclination angle of the first inclined surface 21 toward one end of the stem-pulling roller body 1 is greater than the inclination angle of the second inclined surface 22. The first inclined surfaces 21 and the second inclined surfaces 22 on the same stem-pulling roller body 1 are alternately distributed.

[0027] During operation, the material enters from one end of the two stalk-pulling rollers 1. The two stalk-pulling rollers 1, rotating in opposite directions, drive each stalk-pulling blade 2 to rotate simultaneously to transport the material. During this process, both the first inclined surface 21 and the second inclined surface 22 can guide the material. The stalk-pulling blades 2 of the second inclined surface 22, which has a smaller inclination angle, can ensure strong and effective transport of the material, while the stalk-pulling blades 2 of the first inclined surface 21, which has a larger inclination angle, can reduce the breakage of the material stalks. Thus, while ensuring strong stalk-pulling capacity, it can effectively reduce the breakage of corn stalks and reduce the overall load of the machine.

[0028] The inclination angle of the first inclined surface 21 and the second inclined surface 22 refers to the size of the included angle facing the opening at one end of the pull roller cylinder 1.

[0029] The length of the first inclined plane 21 is one-third to one-half the length of the stem-pulling leaf 2, and the length of the second inclined plane 22 is one-sixth the length of the first inclined plane 21. This ensures that the combined structure of the stem-pulling leaves 2 effectively pulls the straw.

[0030] The number of stem-pulling blades 2 on the same stem-pulling roller body 1 is four, six, eight, or ten.

[0031] like Figure 2 and Figure 3 Each of the stem-pulling leaves 2 has a serrated strong-pulling section 3 at the other end.

[0032] When the two stalk-pulling rollers 1 rotate, the grooves formed between each stalk-pulling blade 2 and the adjacent two stalk-pulling blades 2 generate downward and backward forces on the incoming straw. This force is amplified by the sawtooth strong pulling section 3, which can quickly throw the straw out. During the corn harvesting process, the machine travels at a relatively fast speed, which can also meet the need for the straw to be quickly discharged from the ear-picking plate. This minimizes the occurrence of straw clogging at the rear of the ear-picking plate, making the entire ear-picking process smoother and improving ear-picking efficiency.

[0033] A strong tension rib 4 is provided between the other ends of two adjacent stem-pulling blades 2, and each strong tension rib 4 is fixedly connected to the corresponding stem-pulling roller body 1. The strong tension rib 4 is located at the exact middle position of two adjacent stem-pulling blades 2.

[0034] By filling the groove formed between two adjacent stem-pulling blades 2 with strong tension ribs 4, the clamping force of the other end of the two stem-pulling rollers 1 on the straw material is increased, ensuring the stem-pulling effect of the rear end of the two stem-pulling rollers 1 on the material.

[0035] Each of the strong tension ribs 4 has a chamfered guide surface 41 at one end, which is inclined toward one end of the tension roller body 1. This guide surface 41 effectively guides the material and prevents the end of the strong tension rib 4 from obstructing the material input.

[0036] like Figure 4 The straw-pulling blades 2 on the two straw-pulling rollers 1 are staggered to ensure that the rotating straw-pulling blades 2 effectively pull the straw.

[0037] like Figure 2 and Figure 3 Each of the two stem-pulling roller bodies 1 is rotatably connected to a bearing mounting seat 5 at one end. This allows for the rotational mounting of the stem-pulling roller body 1 via the bearing mounting seat 5.

[0038] Both stalk-pulling rollers 1 have a guide cone 6 fixedly connected to one end on the same axis to smoothly guide the corn stalks into the stalk-pulling roller 1. The front end of the guide cone 6 is usually designed as a cone that is smaller at the front and larger at the back to reduce the collision and friction of the corn ears when they are being guided in. The cone has a spiral guide ridge, the spiral direction of which is consistent with the rotation direction of the corresponding stalk-pulling roller 1. This ensures that the corn stalks can be quickly and smoothly guided into the stalk-pulling roller 1, avoiding the accumulation or jamming of the stalks at the entrance, thereby improving work efficiency.

[0039] The spiral structure of the guide cone 6 allows the corn stalk to transition more smoothly when entering the pull roller.

[0040] Example 2

[0041] Embodiment 2 of this utility model provides a corn harvester, including the variable diameter combined stalk pulling roller as described in Embodiment 1.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0043] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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.

[0047] 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 changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A variable diameter combined stalk pulling roller, characterized in that, The device includes two parallel stem-pulling roller bodies (1), both of which are rotatably mounted in opposite directions. At least four stem-pulling blades (2) are fixedly connected to each of the two stem-pulling roller bodies (1). Each stem-pulling blade (2) is evenly distributed circumferentially on the corresponding stem-pulling roller body (1). Each stem-pulling blade (2) extends along the length of the stem-pulling roller body (1). One end of some of the stem-pulling blades (2) on the two stem-pulling roller bodies (1) is chamfered to form a first inclined surface (21), and one end of the other stem-pulling blades (2) is chamfered to form a second inclined surface (22). The inclination angle of the first inclined surface (21) toward the end of the stem-pulling roller body (1) is greater than the inclination angle of the second inclined surface (22). The first inclined surface (21) and the second inclined surface (22) on the same stem-pulling roller body (1) are alternately distributed.

2. The variable diameter combined stalk pulling roller according to claim 1, characterized in that, The length of the first inclined plane (21) is one-third to one-half the length of the stem leaf (2), and the length of the second inclined plane (22) is one-sixth the length of the first inclined plane (21).

3. The variable diameter combined stalk pulling roller according to claim 1, characterized in that, The number of the stem-pulling leaves (2) is four, six, eight or ten.

4. The variable diameter combined stalk pulling roller according to claim 1, characterized in that, Each of the aforementioned stem-pulling leaves (2) is equipped with a serrated strong-pulling section (3) at the other end.

5. The variable diameter combined stalk pulling roller according to claim 1, characterized in that, A strong tension rib (4) is provided between the other ends of two adjacent stem-pulling leaves (2), and each of the strong tension ribs (4) is fixedly connected to the corresponding stem-pulling roller body (1).

6. The variable diameter combined stalk pulling roller according to claim 5, characterized in that, Each of the aforementioned tensile ribs (4) has a chamfered end forming a guide surface (41).

7. The variable diameter combined stalk pulling roller according to claim 1, characterized in that, The stem-pulling blades (2) on the two stem-pulling roller bodies (1) are staggered.

8. The variable diameter combined stalk pulling roller according to claim 1, characterized in that, One end of each of the two stem-pulling roller bodies (1) is rotatably connected to a bearing mounting seat (5).

9. The variable diameter combined stalk pulling roller according to claim 1, characterized in that, One end of each of the two stem-pulling roller bodies (1) is coaxially fixedly connected with a guide cone (6).

10. A corn harvester, characterized in that, Includes the variable diameter combined stem-pulling roller as described in any one of claims 1-9.

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