Impurity suction fan structure and corn harvester

Abstract

The utility model provides a gettering fan structure and a corn harvester, and the gettering fan structure comprises a gettering fan main body which is provided with a fan cutter shaft; the speed regulation belt wheel is in transmission connection with the fan cutter shaft, and a gasket used for adjusting the transmission ratio can be installed in the speed regulation belt wheel; and the driving belt wheel is arranged on the gettering fan main body, and the driving belt wheel is in transmission connection with the speed regulation belt wheel through a belt. The gettering fan structure and the corn harvester can solve the problem that a chain wheel or a belt wheel must be replaced when the rotating speed of the gettering fan is adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of corn harvesters, and in particular to a dust suction fan structure and a corn harvester. Background Art

[0002] Rice, as the main food crop, is widely planted in various regions of my country. The total planting area in the country is about 35 million hectares, so corn harvesters have become popular among people.

[0003] The dust suction fan of a corn harvester is responsible for removing impurities from crops like corn. The fan is typically driven by a sprocket or pulley that drives the blade shaft. Adjusting the fan's speed requires replacing the sprocket or pulley, which is inconvenient. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a suction fan structure and a corn harvester to solve the problem of having to replace the sprocket or pulley when adjusting the rotation speed of the suction fan.

[0005] According to a first aspect of the present utility model, a dust suction fan structure is provided, wherein the dust suction fan structure includes: a dust suction fan body, which is provided with a fan blade shaft; a speed regulating pulley, which is transmission-connected to the fan blade shaft, and a gasket for adjusting the transmission ratio can be installed in the speed regulating pulley; and a driving pulley, which is provided on the dust suction fan body, and the driving pulley is connected to the speed regulating pulley through a belt transmission.

[0006] Preferably, the speed regulating pulley includes: a movable plate, provided with a first side surface, the outer periphery of which is formed with a first inclined surface; and a fixed plate, provided with a second side surface, the outer periphery of which is formed with a second inclined surface, the second side surface is arranged opposite to the first side surface, and the gasket can be installed between the first side surface and the second side surface.

[0007] Preferably, the first inclined surface is inclined in a direction away from the fixed disk along the radial direction of the movable disk, and the second inclined surface is inclined in a direction away from the movable disk along the radial direction of the fixed disk.

[0008] Preferably, a middle portion of the first side surface is parallel to a middle portion of the second side surface.

[0009] Preferably, there are multiple gaskets, and the gaskets can be installed between the middle portion of the first side surface and the middle portion of the second side surface to adjust the distance between the movable plate and the fixed plate.

[0010] Preferably, both sides in the width direction of the belt are respectively in contact with the first inclined surface and the second inclined surface. When the fixed disk is away from the moving disk, the base circle diameter of the speed regulating pulley decreases, and when the fixed disk is close to the moving disk, the base circle diameter of the speed regulating pulley increases.

[0011] Preferably, the speed regulating pulley further includes a bolt and a locking nut. The bolt passes through the moving disk and the fixed disk, and the locking nut is installed on the bolt.

[0012] Preferably, the impurity suction fan structure further includes: a rocker arm, the first end of the rocker arm is hinged to the impurity suction fan main body; a first tension pulley, installed at the second end of the rocker arm, the first tension pulley is in contact with the belt; and a pull rod, movably arranged on the impurity suction fan main body, and the end of the pull rod is connected to the rocker arm.

[0013] Preferably, the impurity suction fan structure further includes: a mounting seat, movably arranged on the impurity suction fan main body; and a second tension pulley, arranged on the mounting seat, the second tension pulley is in contact with the belt.

[0014] According to a second aspect of the present invention, a corn harvester is provided, wherein the corn harvester includes the impurity suction fan structure as described above.

[0015] In the impurity suction fan structure and the corn harvester according to the embodiments of the present invention, a fan cutter shaft is arranged on the impurity suction fan main body. The speed regulating pulley is in transmission connection with the fan cutter shaft and is used to drive the cutter shaft to rotate. Gaskets for adjusting the transmission ratio can be installed in the speed regulating pulley, so that the rotation speed of the impurity suction fan can be directly adjusted without replacing the pulley. The driving pulley is arranged on the impurity suction fan main body, and the driving pulley is in transmission connection with the speed regulating pulley through a belt. In this way, the problem that the sprocket or pulley must be replaced when adjusting the rotation speed of the impurity suction fan can be effectively solved.

[0016] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given in conjunction with the accompanying drawings and are described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic diagram of the impurity suction fan according to the present invention.

[0019] Figure 2 It is a schematic diagram of the first embodiment of the speed-regulating pulley according to the present utility model.

[0020] Figure 3 It is a schematic diagram of the second embodiment of the speed-regulating pulley according to the present utility model.

[0021] Figure 4 It is a schematic diagram of another angle of the speed-regulating pulley according to the present utility model.

[0022] Reference numerals: 1 - impurity suction fan main body; 10 - fan cutter shaft; 2 - speed-regulating pulley; 21 - moving disk; 210 - first inclined surface; 22 - fixed disk; 220 - second inclined surface; 23 - gasket; 24 - bolt; 25 - nut; 3 - driving pulley; 4 - belt; 51 - first tensioning pulley; 511 - rocker arm; 512 - pull rod; 52 - second tensioning pulley; 521 - mounting seat. Detailed implementation manners

[0023] The following detailed implementation manners are provided to help the reader obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example and is not limited to the order set forth herein. Rather, changes that will be apparent after understanding the disclosure of the present application may be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

[0024] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0025] Throughout the specification, when an element (such as a layer, region, or substrate) is described as "on" another element, "connected to" another element, "bonded to" another element, "above" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "above" another element, or "covering" another element, or there may be one or more other elements therebetween. In contrast, when an element is described as "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly above" another element, or "directly covering" another element, there may be no other elements therebetween.

[0026] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0027] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or parts, these components, elements, regions, layers, or parts are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or part from another. Thus, a first component, element, region, layer, or part as referred to in the examples described herein may also be referred to as a second component, element, region, layer, or part without departing from the teachings of the examples.

[0028] For ease of description, spatial relationship terms such as "on", "upper", "under", and "lower" may be used herein to describe the relationship of one element to another as shown in the figures. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "on" or "upper" relative to another element will then be "under" or "lower" relative to the other element. Thus, the term "on" includes both the orientations of "on" and "under" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0029] The terms used herein are only for describing various examples and are not intended to limit the examples. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprises", "comprising", and "having" list the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0030] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the figures may occur. Thus, the examples described herein are not limited to the specific shapes shown in the figures, but include changes in shape that occur during manufacturing.

[0031] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0032] AsFigures 1 to 4 As shown, according to the first aspect of the present utility model, a foreign matter suction fan structure is provided. The foreign matter suction fan structure includes a foreign matter suction fan main body 1, a speed regulating pulley 2, and a driving pulley 3.

[0033] In the following description, reference will be made to Figures 1 to 4 specifically describe the specific structures of the above components of the foreign matter suction fan structure and the connection relationships of the above components.

[0034] As Figures 1 to 4 shown, in the embodiment, the foreign matter suction fan main body 1 may be provided with a fan cutter shaft 10. The speed regulating pulley 2 may be in transmission connection with the fan cutter shaft 10, and the speed regulating pulley 2 is used to drive the fan cutter shaft 10 to rotate. In addition, a gasket 23 for adjusting the transmission ratio can be installed inside the speed regulating pulley 2, so that the rotation speed of the foreign matter suction fan can be directly adjusted without replacing the pulley. The driving pulley 3 may be installed on the transmission shaft (not shown) of the foreign matter suction fan main body 1 for providing power. The driving pulley 3 may be in transmission connection with the speed regulating pulley 2 through a belt 4, and thus the rotation speed of the foreign matter suction fan can be adjusted without replacing the sprocket or pulley.

[0035] Preferably, as Figures 1 to 4 shown, in the embodiment, the speed regulating pulley 2 may include a moving disk 21 and a fixed disk 22. Among them, the moving disk 21 may be provided with a first side surface (which may be the left side surface of the moving disk 21 as shown in Figure 3 ). A first inclined surface 210 may be formed on the outer periphery of the first side surface, and the first inclined surface 210 may be arranged in a ring shape along the circumferential direction of the moving disk 21. The fixed disk 22 may be provided with a second side surface (which may be the right side surface of the moving disk 21 as shown in Figure 3 ). A second inclined surface 220 may be formed on the outer periphery of the second side surface, and the second inclined surface 220 may be arranged in a ring shape along the circumferential direction of the moving disk 21. The second side surface and the first side surface may be relatively arranged so that the gasket 23 can be installed between the first side surface and the second side surface.

[0036] Furthermore, preferably, as Figures 1 to 4 shown, in the embodiment, the diameters of the moving disk 21 and the fixed disk 22 may be the same, and the sizes of the first inclined surface 210 and the second inclined surface 220 may be the same. The first inclined surface 210 may be inclined in a direction away from the fixed disk 22 along the radial direction of the moving disk 21 (i.e., the direction away from the center of the moving disk 21). The second inclined surface 220 may be inclined in a direction away from the moving disk 21 along the radial direction of the fixed disk 22 (i.e., the direction away from the center of the fixed disk 22). So that a slope is formed between the outer periphery of the fixed disk 22 and the outer periphery of the moving disk 21.

[0037] Preferably, as Figures 1 to 4As shown, in the embodiment, the middle part of the first side surface of the moving disk 21 can be formed into a circular plane. The middle part of the second side surface of the fixed disk 22 can also be formed into a circular plane. The middle part of the first side surface can be aligned with the middle part of the second side surface, and the middle part of the first side surface can be parallel to the middle part of the second side surface. The gasket 23 can be formed into a circular plate member, so that when the gasket 23 is clamped between the moving disk 21 and the fixed disk 22, the gasket 23 can be attached to the first side surface and the second side surface. The diameter of the gasket 23 can be smaller than the diameters of the planes of the middle parts of the first side surface and the second side surface.

[0038] More preferably, as Figures 1 to 4 shown, in the embodiment, the number of the gaskets 23 can be multiple. Any number of gaskets 23 can be installed between the middle part of the first side surface and the middle part of the second side surface to adjust the distance between the moving disk 21 and the fixed disk 22, and further adjust the distance between the first inclined surface 210 and the second inclined surface 220.

[0039] As Figure 1 shown, in the embodiment, since both sides in the width direction of the belt 4 are in contact with the first inclined surface 210 and the second inclined surface 220 respectively, the actual base circle diameter of the speed regulating pulley 2 is determined by the contact positions of the belt 4 with the first inclined surface 210 and the second inclined surface 220. Therefore, when the fixed disk 22 is far from the moving disk 21, the belt 4 moves towards the direction close to the fan cutter shaft 10, and the base circle diameter of the speed regulating pulley 2 decreases. When the fixed disk 22 is close to the moving disk 21, the belt 4 moves towards the direction away from the fan cutter shaft 10, and the base circle diameter of the speed regulating pulley 2 increases.

[0040] In addition, preferably, as Figure 1 and Figure 4 shown, in the embodiment, the speed regulating pulley 2 can further include bolts 24 and lock nuts 25. Among them, the number of the bolts 24 can be multiple, the bolts 24 can pass through the moving disk 21 and the fixed disk 22, and at the same time the bolts 24 can pass through the gasket 23. The lock nut 25 can be installed on the bolt 24, and the lock nut 25 can be arranged on the outer side of the speed regulating pulley 2 for screwing and locking the moving disk 21 and the fixed disk 22. In addition, the unused gaskets 23 can also be fixed on the outer side of the speed regulating pulley 2 through the bolts 24 and the lock nuts 25 for easy taking when using the gaskets 23.

[0041] Preferably, as Figure 1 shown, in the embodiment, the impurity suction fan structure can further include a rocker arm 511, a first tension pulley 51 and a pull rod 512. Among them, the first end of the rocker arm 511 (can be as Figure 1The left end shown can be hinged to the impurity suction fan body 1. The first tension pulley 51 can be installed at the second end of the rocker arm 511, and the first tension pulley 51 can be in contact with the belt 4 to tension the belt 4. The tie rod 512 can be movably arranged on the impurity suction fan body 1, and the end of the tie rod 512 can be connected to the middle of the rocker arm 511 to drive the rocker arm 511, so as to adjust the tension degree of the belt 4 and the position of the belt 4 to avoid interference.

[0042] More preferably, as Figure 1 shown, in the embodiment, the impurity suction fan structure may further include a mounting seat 521 and a second tension pulley 52. Among them, the mounting seat 521 can be movably arranged on the impurity suction fan body 1, that is, the fixed position of the mounting seat 521 can be adaptively adjusted according to actual needs. The second tension pulley 52 can be installed on the mounting seat 521. The second tension pulley 52 can be in contact with the belt 4 to tension the belt 4.

[0043] In addition, as Figure 1 shown, according to the second aspect of the present invention, a corn harvester is provided, and the corn harvester includes the impurity suction fan structure as described above.

[0044] During the use process, the operator can adjust the base circle diameter of the speed regulating pulley 2 by installing a gasket 23 in the speed regulating pulley 2, and then adjust the transmission ratio of the speed regulating pulley 2. In this way, the rotation speed of the impurity suction fan can be directly adjusted without replacing the pulley. In addition, a first tension pulley 51 and a second tension pulley 52 are also installed on the impurity suction fan body 1 to adjust the tension degree of the belt 4 and the position of the belt 4 to avoid interference.

[0045] Finally, it should be noted that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, rather than limiting them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some technical features thereof; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An impurity suction fan structure is provided on a corn harvester, characterized in that, The structure of the impurity suction fan includes: An impurity suction fan main body, provided with a fan cutter shaft; A speed regulating pulley, in transmission connection with the fan cutter shaft, and a spacer for adjusting the transmission ratio can be installed inside the speed regulating pulley; and A driving pulley, arranged on the impurity suction fan main body, and the driving pulley is in belt transmission connection with the speed regulating pulley; The structure of the impurity suction fan further includes: A rocker arm, the first end of the rocker arm is hinged to the impurity suction fan main body; A first tension pulley, installed at the second end of the rocker arm, and the first tension pulley abuts against the belt; and A pull rod, movably arranged on the impurity suction fan main body, and the end of the pull rod is connected to the rocker arm; The structure of the impurity suction fan further includes: A mounting seat, movably arranged on the impurity suction fan main body; and A second tension pulley, arranged on the mounting seat, and the second tension pulley abuts against the belt.

2. The impurity suction fan structure according to claim 1, characterized in that, The speed regulating pulley includes: A moving disk, provided with a first side surface, and a first inclined surface is formed on the outer periphery of the first side surface; and A fixed disk, provided with a second side surface, and a second inclined surface is formed on the outer periphery of the second side surface. The second side surface is arranged opposite to the first side surface, and the spacer can be installed between the first side surface and the second side surface.

3. The structure of the gettering fan according to claim 2, wherein, The first inclined surface inclines away from the fixed disk along the radial direction of the moving disk, and the second inclined surface inclines away from the moving disk along the radial direction of the fixed disk.

4. The impurity suction fan structure according to claim 3, wherein, The middle part of the first side surface is parallel to the middle part of the second side surface.

5. The gettering fan structure according to claim 4, characterized in that, The number of the spacers is multiple, and the spacers can be installed between the middle parts of the first side surface and the second side surface for adjusting the distance between the moving disk and the fixed disk.

6. The gettering fan structure according to claim 5, characterized in that Both sides in the width direction of the belt are respectively in contact with the first inclined surface and the second inclined surface. When the fixed disk is away from the moving disk, the base circle diameter of the speed regulating pulley decreases; when the fixed disk is close to the moving disk, the base circle diameter of the speed regulating pulley increases.

7. The gettering fan structure according to claim 2, characterized in that, The speed regulating pulley further includes a bolt and a locking nut. The bolt passes through the moving disk and the fixed disk, and the locking nut is installed on the bolt.

8. A corn harvester, characterized in that, The corn harvester includes the impurity suction fan structure according to any one of claims 1 to 7.

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