Cleaning fan speed regulating structure and harvester

Abstract

The utility model relates to the technical field of fan speed regulation, in particular to a cleaning fan speed regulation structure and a harvester, and the cleaning fan speed regulation structure comprises a stepless speed regulation wheel which is in transmission connection with an engine; the first end of the transmission belt is in transmission connection with the stepless speed regulating wheel, and the second end of the transmission belt is in transmission connection with a transmission wheel of a cleaning fan; and the hydraulic assembly is connected with the stepless speed regulating wheel, and the hydraulic assembly is used for adjusting the transmission ratio of the stepless speed regulating wheel to the transmission wheel. According to the cleaning fan speed regulating structure and the harvester, the problem of how to efficiently and accurately regulate the rotating speed of the cleaning fan in the vehicle running process can be solved.

Description

Technical Field

[0001] This application relates to the field of fan speed regulation technology, and in particular to a cleaning fan speed regulation structure and a harvester. Background Technology

[0002] With the rapid development of agricultural mechanization in my country, the harvesting quality and efficiency of harvesting machinery have been significantly improved. The speed of the blower has a crucial impact on the harvesting quality and efficiency. Insufficient airflow from the cleaning blower will lead to an increase in the bran content of wheat during harvesting, i.e., a higher impurity rate; conversely, excessive airflow from the cleaning system will cause wheat grains and bran to be blown out together, increasing the loss rate. Therefore, selecting an appropriate blower speed can greatly improve harvesting quality and efficiency.

[0003] Currently, there are two main methods for adjusting the airflow of cleaning fans. The first method involves changing the fan speed by adjusting a fixed transmission ratio when the vehicle is stationary. However, this method cannot adjust the speed in real time while the vehicle is running; the transmission ratio must be manually adjusted when the vehicle is stationary. This is not only time-consuming but also makes it difficult to guarantee precise speed adjustment. The second method involves controlling the airflow by installing a baffle plate, thereby adjusting the wind speed. However, this method leads to engine power loss, resulting in resource waste. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a cleaning blower speed regulation structure and a harvester to solve the problem of how to efficiently and accurately adjust the speed of the cleaning blower during vehicle operation.

[0005] According to a first aspect of this utility model, a speed regulating structure for a cleaning fan is provided, wherein the speed regulating structure for the cleaning fan includes: a continuously variable speed (CVT) wheel, which is connected to an engine; a transmission belt, the first end of which is connected to the CVT wheel and the second end of which is connected to the transmission wheel of the cleaning fan; and a hydraulic component connected to the CVT wheel, wherein the hydraulic component is used to adjust the transmission ratio between the CVT wheel and the transmission wheel.

[0006] Preferably, the continuously variable speed pulley includes: a hydraulic cylinder connected to the hydraulic assembly, the hydraulic assembly capable of supplying oil to the hydraulic cylinder or discharging oil from the hydraulic cylinder; a fixed plate mounted on the hydraulic cylinder, the engine being driven by a belt to a transmission plate, the transmission plate being keyed to the fixed plate; and a moving plate connected to the fixed plate via a guide post, the hydraulic cylinder capable of driving the moving plate closer to or further away from the fixed plate; the fixed plate having a first inclined surface, the moving plate having a second inclined surface, the first inclined surface and the second inclined surface being disposed opposite each other, the distance between the first inclined surface and the second inclined surface gradually increasing along the direction away from the axis of the continuously variable speed pulley, and the first end of the transmission belt being sleeved between the first inclined surface and the second inclined surface.

[0007] Preferably, the hydraulic cylinder includes: a cylinder body connected to the hydraulic assembly, the fixed plate being mounted on the cylinder body via a first bearing, and a base being provided at the end of the cylinder body; and a piston rod mounted on the cylinder body, the movable plate being mounted on the piston rod via a second bearing, the piston rod being used to drive the movable plate closer to or further away from the fixed plate.

[0008] Preferably, the inner wall of the second bearing is connected to the outer surface of the piston rod, and the outer wall of the second bearing is connected to the moving disc.

[0009] Preferably, the second bearing is a deep groove ball bearing, and the second bearing, the piston rod, and the moving disc move synchronously in the horizontal direction.

[0010] Preferably, one of the fixed plate and the moving plate has an axially extending protrusion, and the other has an axially extending recess. The protrusion can be inserted into the recess, and the first inclined surface and the second inclined surface are located on the outer periphery of the protrusion and the recess, respectively.

[0011] Preferably, the guide post passes through the fixed plate and the moving plate axially, and the guide post passes through the protrusion and the recess.

[0012] Preferably, there are multiple guide posts, which are arranged at intervals along the circumference of the continuously variable speed wheel.

[0013] Preferably, the hydraulic assembly includes: an oil inlet pipe connected to the oil cylinder, the oil inlet pipe being equipped with a speed-reducing hydraulic valve; and an oil outlet pipe connected to the oil cylinder, the oil outlet pipe being equipped with a speed-increasing hydraulic valve.

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

[0015] The cleaning blower speed regulation structure and harvester of this utility model embodiment have an engine connected to a continuously variable speed (CVT) pulley to provide power. The CVT pulley is then connected to the drive pulley of the cleaning blower via a transmission belt to drive the cleaning blower. The CVT pulley is connected to a hydraulic assembly, allowing the operator to adjust the transmission ratio between the CVT pulley and the drive pulley from inside the vehicle, thereby regulating the blower speed. Hydraulic regulation is more precise than manual adjustment and does not cause power loss to the engine, effectively solving the problem of how to efficiently and accurately regulate the cleaning blower speed during vehicle operation.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the cleaning fan speed regulation structure and the cleaning fan according to this utility model.

[0019] Figure 2 This is a schematic diagram of the speed regulation structure of the cleaning fan according to this utility model.

[0020] Reference numerals in the attached drawings: 1-Continuously variable speed control wheel; 10-Guide post; 11-Fixed plate; 110-First inclined surface; 111-Protrusion; 112-First bearing; 12-Moving plate; 120-Second inclined surface; 121-Recess; 122-Second bearing; 13-Cylinder body; 130-Base; 14-Piston rod; 2-Drive belt; 3-Cleaning fan; 30-Drive wheel; 4-Drive disc. Detailed Implementation

[0021] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0022] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0023] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0024] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0025] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0026] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations 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 relation terms used herein will be interpreted accordingly.

[0027] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0028] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0029] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0030] like Figure 1 and Figure 2 As shown, according to the first aspect of the present invention, a cleaning fan speed regulation structure is provided, which includes a stepless speed regulating wheel 1, a transmission belt 2, and a hydraulic component.

[0031] In the following description, reference will be made to Figure 1 and Figure 2 The specific structure of the components mentioned above and their connection relationships in the cleaning fan speed regulation structure are described in detail.

[0032] like Figure 1 and Figure 2 As shown, in this embodiment, an engine (not shown) can be connected to a continuously variable transmission pulley 1 to provide power. The continuously variable transmission pulley 1 can be connected to the first end of a drive belt 2 (which can be, for example,...). Figure 1 The right end shown is the drive connection, and the second end of the drive belt 2 (can be as shown on the right) is the drive connection. Figure 1 The left end (shown) can be connected to the drive wheel 30 of the cleaning blower 3. This allows the engine's power to be transmitted to the drive wheel 30 via the drive belt 2, thereby driving the cleaning blower 3 to rotate. The continuously variable speed pulley 1 can also be connected to a hydraulic assembly, allowing the operator to directly adjust the transmission ratio between the continuously variable speed pulley 1 and the drive wheel 30 from inside the vehicle, thus adjusting the air speed of the cleaning blower 3. In this way, hydraulic adjustment is more precise than manual adjustment and does not cause power loss to the engine, enabling efficient and precise adjustment of the cleaning blower 3's speed during vehicle operation.

[0033] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the engine speed can be a constant. In this case, the speed of the cleaning fan 3 can be adjusted by adjusting the mating diameter of the continuously variable speed pulley 1 and the drive belt 2. At this time, the larger the mating diameter of the continuously variable speed pulley 1 and the drive belt 2, the smaller the transmission ratio between the continuously variable speed pulley 1 and the drive pulley 30, and the higher the speed of the cleaning fan 3; conversely, the smaller the mating diameter of the continuously variable speed pulley 1 and the drive belt 2, the larger the transmission ratio between the continuously variable speed pulley 1 and the drive pulley 30, and the lower the speed of the cleaning fan 3.

[0034] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the continuously variable speed pulley 1 may include a hydraulic cylinder, a fixed plate 11, and a moving plate 12. A hydraulic assembly can be connected to the hydraulic cylinder, capable of supplying or discharging oil from the cylinder. The fixed plate 11 can be mounted on the hydraulic cylinder, and the engine can be drivenly connected to the fixed plate 11. Specifically, the engine can be belt-driven connected to the transmission plate 4, which can be fitted over the fixed plate 11 and keyed to it, allowing the engine to drive the fixed plate 11 to rotate. The moving plate 12 can be connected to the fixed plate 11 via a guide post 10, enabling the moving plate 12 to rotate synchronously with the fixed plate 11. The hydraulic cylinder can drive the moving plate 12 closer to or further away from the fixed plate 11 to adjust the mating diameter between the continuously variable speed pulley 1 and the transmission belt 2.

[0035] Specifically, such as Figure 1 and Figure 2As shown, in this embodiment, the fixed plate 11 may have a first inclined surface 110, and the moving plate 12 may have a second inclined surface 120, with the first inclined surface 110 and the second inclined surface 120 arranged opposite to each other. The distance between the first inclined surface 110 and the second inclined surface 120 may gradually increase in the direction away from the axis of the continuously variable transmission (CVT) wheel 1 (i.e., in the radial direction of the CVT wheel 1). The first end of the transmission belt 2 may be fitted between the first inclined surface 110 and the second inclined surface 120. This arrangement ensures that when the first inclined surface 110 and the second inclined surface 120 are moving away from each other, the transmission belt 2 will move towards the axis of the CVT wheel 1, thereby reducing the mating diameter between the CVT wheel 1 and the transmission belt 2. When the first inclined surface 110 and the second inclined surface 120 are moving closer to each other, the transmission belt 2 will move away from the axis of the CVT wheel 1, thereby increasing the mating diameter between the CVT wheel 1 and the transmission belt 2.

[0036] Furthermore, preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the hydraulic cylinder may include a cylinder body 13 and a piston rod 14. The cylinder body 13 can be connected to a hydraulic assembly to supply and discharge oil. The fixed plate 11 can be mounted on the cylinder body 13 via a first bearing 112. Specifically, the fixed plate 11 can be sleeved on the outside of the cylinder body 13, and the fixed plate 11 can be coaxially arranged with the cylinder body 13. The first bearing 112 can be disposed between the fixed plate 11 and the cylinder body 13 to facilitate rotation of the fixed plate 11 relative to the cylinder body 13. The piston rod 14 can be mounted on the cylinder body 13, and the piston rod 14 can extend or retract axially. The movable plate 12 can be mounted on the piston rod 14 via a second bearing 122, so that the piston rod 14 can drive the movable plate 12 closer to or further away from the fixed plate 11, and the movable plate 12 can rotate relative to the piston rod 14. Specifically, when the hydraulic assembly supplies oil to the cylinder 13, the piston rod 14 extends and drives the moving plate 12 to move away from the fixed plate 11; when the cylinder 13 discharges oil through the hydraulic assembly, the piston rod 14 shortens and drives the moving plate 12 to move closer to the fixed plate 11.

[0037] Further optimized, such as Figure 1 and Figure 2As shown, in this embodiment, the end of the cylinder 13 without the piston rod 14 may be provided with a base 130 for fixing the cylinder 13 to the vehicle body. The base 130 may be bolted to the vehicle body of the harvester. The moving disc 12 may be sleeved on the outer periphery of the piston rod 14. The second bearing 122 may be a deep groove ball bearing, the inner wall of the second bearing 122 may be connected to the outer surface of the piston rod 14, and the outer wall of the second bearing 122 may be connected to the inner wall of the moving disc 12, thereby enabling the piston rod 14 to drive the moving disc 12 to move, so that the second bearing 122, the piston rod 14, and the moving disc 12 move synchronously in the horizontal direction.

[0038] In addition, preferred, such as Figure 2 As shown, in this embodiment, one of the fixed disk 11 and the movable disk 12 may have an axially extending protrusion 111, and the other may have an axially extending recess 121. The protrusion 111 may be an annular protrusion, and the recess 121 may be an annular groove. The protrusion 111 and the recess 121 are positioned correspondingly so that the protrusion 111 can be inserted into the recess 121, facilitating the engagement of the fixed disk 11 and the movable disk 12. The first inclined surface 110 and the second inclined surface 120 may be located on the outer periphery of the protrusion 111 and the recess 121, respectively. Specifically, the protrusion 111 may be formed in the middle of the fixed disk 11, and the first inclined surface 110 may be disposed on the outer periphery of the protrusion 111. The recess 121 may be formed in the middle of the movable disk 12, and the second inclined surface 120 may be disposed on the outer periphery of the recess 121. During the process of the protrusion 111 being inserted into the recess 121, the first inclined surface 110 and the second inclined surface 120 come closer to each other.

[0039] Furthermore, preferably, such as Figure 2 As shown, in this embodiment, the guide post 10 can be arranged parallel to the axis. The guide post 10 can pass through the fixed plate 11 and the moving plate 12 axially to guide the movement of the fixed plate 11. In addition, limit nuts can be provided at both ends of the guide post 10 to prevent the moving plate 12 from disengaging from the guide post 10 during movement. The guide post 10 can pass through the protrusion 111 and the recess 121 to improve the installation strength and guiding effect of the guide post 10. More preferably, there can be multiple guide posts 10, which can be arranged at intervals along the circumference of the continuously variable speed wheel 1 to further improve the guiding effect of the guide posts 10.

[0040] Preferably, in this embodiment, the hydraulic assembly may include an inlet line and an outlet line. The inlet line may be connected to the cylinder, and a speed-reducing hydraulic valve may be installed on the inlet line. When the speed-reducing hydraulic valve is open, the inlet line supplies oil to the cylinder 13, causing the piston rod 14 to extend and the moving disc 12 to move away from the fixed disc 11, thereby reducing the rotational speed of the transmission wheel 30. Similarly, the outlet line may be connected to the cylinder, and a speed-increasing hydraulic valve may be installed on the outlet line. When the speed-increasing hydraulic valve is open, the cylinder 13 discharges oil through the outlet line, causing the piston rod 14 to shorten and the moving disc 12 to move closer to the fixed disc 11, thereby increasing the rotational speed of the transmission wheel 30.

[0041] Furthermore, according to a second aspect of the present invention, a harvester is provided, the harvester including a cleaning fan 3 and a cleaning fan speed regulation structure as described above, the cleaning fan speed regulation structure being connected to the transmission wheel 30 of the cleaning fan 3 via a transmission belt 2.

[0042] During operation, the operator can manually control the hydraulic components via buttons inside the vehicle, or set the target speed value using the in-vehicle display screen, and control and adjust the hydraulic components through the harvester's VCU. The VCU compares the target speed value of the cleaning blower 3 with the actual speed value, and uses this to control the opening and closing of the speed-increasing and speed-decreasing hydraulic valves. When the speed-increasing hydraulic valve is open, the cylinder 13 discharges oil through the drain pipe, causing the piston rod 14 to shorten and the moving disc 12 to move closer to the fixed disc 11. This reduces the transmission ratio between the continuously variable speed wheel 1 and the transmission wheel 30, thereby increasing the speed of the transmission wheel 30. When the speed-decreasing hydraulic valve is open, the inlet pipe supplies oil to the cylinder 13, causing the piston rod 14 to extend and the moving disc 12 to move away from the fixed disc 11. This increases the transmission ratio between the continuously variable speed wheel 1 and the transmission wheel 30, thereby decreasing the speed of the transmission wheel 30. This allows for efficient and precise adjustment of the cleaning blower 3's speed during vehicle operation.

[0043] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A speed regulating structure for a cleaning fan, characterized in that, The cleaning fan speed control structure includes: The continuously variable speed control wheel is connected to the engine transmission. A drive belt, the first end of which is connected to the continuously variable speed pulley, and the second end of which is connected to the drive pulley of the cleaning fan; and A hydraulic component is connected to the continuously variable speed wheel, and the hydraulic component is used to adjust the transmission ratio between the continuously variable speed wheel and the transmission wheel; The continuously variable speed control wheel includes: A hydraulic cylinder is connected to the hydraulic assembly, which is capable of supplying oil to the hydraulic cylinder or discharging oil from the hydraulic cylinder. A fixed plate, mounted on the hydraulic cylinder, is connected to the engine via a belt and a transmission plate, the transmission plate being keyed to the fixed plate; and The movable disk is connected to the fixed disk via a guide post, and the hydraulic cylinder can drive the movable disk to move closer to or away from the fixed disk; The fixed plate has a first inclined surface, and the moving plate has a second inclined surface. The first inclined surface and the second inclined surface are arranged opposite to each other. The distance between the first inclined surface and the second inclined surface gradually increases along the direction away from the axis of the continuously variable speed wheel. The first end of the transmission belt is sleeved between the first inclined surface and the second inclined surface.

2. The cleaning fan speed regulation structure according to claim 1, characterized in that, The hydraulic cylinder includes: A cylinder body, connected to the hydraulic assembly, the fixed plate mounted on the cylinder body via a first bearing, and a base provided at the end of the cylinder body; and A piston rod is mounted on the cylinder body, and the moving plate is mounted on the piston rod via a second bearing. The piston rod is used to drive the moving plate to move closer to or away from the fixed plate.

3. The cleaning fan speed regulation structure according to claim 2, characterized in that, The inner wall of the second bearing is connected to the outer surface of the piston rod, and the outer wall of the second bearing is connected to the moving disc.

4. The cleaning fan speed regulation structure according to claim 2, characterized in that, The second bearing is a deep groove ball bearing, and the second bearing, the piston rod, and the moving disc move synchronously in the horizontal direction.

5. The cleaning fan speed regulation structure according to claim 1, characterized in that, One of the fixed plate and the moving plate has an axially extending protrusion, and the other has an axially extending recess. The protrusion can be inserted into the recess. The first inclined surface and the second inclined surface are located on the outer periphery of the protrusion and the recess, respectively.

6. The cleaning fan speed regulation structure according to claim 5, characterized in that, The guide post passes through the fixed plate and the moving plate axially, and the guide post passes through the protrusion and the recess.

7. The cleaning fan speed regulation structure according to claim 1, characterized in that, The number of guide posts is multiple, and the multiple guide posts are arranged at intervals along the circumference of the continuously variable speed wheel.

8. The cleaning fan speed regulation structure according to claim 1, characterized in that, The hydraulic assembly includes: An oil inlet pipe is connected to the oil cylinder, and the oil inlet pipe is equipped with a speed-reducing hydraulic valve; and An oil drain line is connected to the oil cylinder, and the oil drain line is equipped with a speed-up hydraulic valve.

9. A harvester, characterized in that, The harvester includes the cleaning fan speed control structure as described in any one of claims 1 to 8.

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