Threshing and cleaning device and harvester

Abstract

The utility model provides a threshing and cleaning device and harvester, including frame, threshing cylinder, cover plate, concave plate, deflector and adjusting subassembly, adjusting subassembly fixed on the upper surface of cover plate for adjusting the setting angle of deflector, the adjusting assembly comprises a connecting plate arranged on the upper surface of the cover plate, a middle plate used for fixing the flow guide plate, a first connecting rod set and a driver used for driving the first connecting rod set to drive the connecting plate to move on the cover plate, and the flow guide plate on the connecting plate rotates in the arrangement direction of the adjusting groove with the fixing point on the middle plate as the center to adjust the inclination angle of the flow guide plate. Therefore, the passing speed of the straw in the threshing cavity is adjusted, and the situation that grains are broken due to insufficient threshing or excessive threshing is avoided. The threshing and cleaning device and the harvester have the advantages of being simple in structure, convenient to operate and high in threshing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a threshing and cleaning device and a harvester. Background Technology

[0002] During the operation of a grain harvester, the straw needs to be guided into the threshing drum for threshing and discharge in a timely manner. The speed at which the straw passes through the threshing drum affects the threshing effect. Users typically adjust the concave screen or the gap between the concave screens to meet the needs of harvesting different crops. In conventional threshing and cleaning devices, the rotation speed of the threshing drum is usually adjusted to change the threshing time of the straw within the drum. With the increasing size of grain harvesters, when harvesting crops that are difficult or easy to thresh, the straw is easily crushed in the threshing drum because the front end of the threshing drum has already completely threshed the crop, increasing the burden on the threshing and cleaning process and thus affecting harvesting performance. Conversely, when harvesting crops that are difficult to thresh, the residence time of the crop in the threshing drum should be increased to prevent incomplete threshing and losses. In addressing this issue, a method has emerged on the market that adjusts the angle of the guide plate to change the speed at which the straw moves in the threshing and cleaning device. However, when harvesting crops at different maturity levels, the threshing and cleaning device is removed. Adjusting the angle of the guide plate is cumbersome and affects harvesting efficiency. Therefore, there is an urgent need for a threshing and cleaning device to solve the problem of high threshing and cleaning load during grain harvesting. Utility Model Content

[0003] The purpose of this invention is to provide a threshing and cleaning device and a harvester to solve the problems of high threshing and cleaning load and inconvenient adjustment of the guide plate during the threshing process of existing harvesters, so as to improve the threshing efficiency of the harvester.

[0004] According to one aspect of this utility model, a threshing and cleaning device is provided, including a frame, a threshing drum, a cover plate, a concave plate, a guide plate, and an adjustment assembly. The threshing drum is fixed to the frame and is used for crop threshing. The cover plate is disposed above the threshing drum and fixedly connected to the frame. The cover plate is bent along the outer circumference of the threshing drum, and adjustment grooves are arranged side by side on the cover plate. The concave plate is bent along the outer circumference of the threshing drum and disposed below the threshing drum, and is hinged to the cover plate to form a threshing chamber. The threshing drum is longitudinally disposed in the threshing chamber. The guide plates are arranged side by side on the inner surface of the cover plate, and one end of the guide plate is connected to the adjustment groove. The adjustment assembly is fixed to the upper surface of the cover plate and is used for adjustment. The setting angle of the guide plate; the adjustment assembly includes: a connecting plate, an intermediate plate, a driver, and a first connecting rod assembly. The connecting plate is disposed on the upper surface of the cover plate and is connected to the guide plate through the adjustment groove. The intermediate plate is arranged parallel to the connecting plate and fixed to the upper surface of the cover plate for fixing the guide plate. The driver is disposed on the cover plate. One end of the first connecting rod assembly is connected to the driver, and the other end is connected to the connecting plate. The driver drives the first connecting rod assembly, causing the connecting plate to move on the cover plate. The guide plate disposed on the connecting plate rotates along the setting direction of the adjustment groove with the fixed point on the intermediate plate as the center, adjusting the tilt angle of the guide plate, thereby adjusting the passing speed of the straw in the threshing chamber.

[0005] By setting up adjustment components, the driver can adaptively adjust the tilt angle of the guide vane according to the characteristics of the crop, thereby changing the time that the straw passes through the threshing chamber to improve threshing efficiency and quality. The operation is simple, convenient, and highly reliable.

[0006] Preferably, the adjusting assembly further includes a linkage rod and a second linkage group. The linkage rod is arranged parallel to the threshing drum, with one end of the linkage rod connected to the first linkage group and the other end connected to the second linkage group.

[0007] Preferably, the first linkage assembly includes a first connecting arm connected to the driver, the other end of the first connecting arm being fixed to a first rotating shaft and rotating around the first rotating shaft, one end of the second connecting arm being connected to the first rotating shaft, the other end of the second connecting arm being connected to a first pull rod, and the first pull rod being connected to the connecting plate.

[0008] Preferably, the second linkage group includes a third link arm connected to the linkage rod, the other end of the third link arm being fixed to the second rotating shaft and rotating around the second rotating shaft, one end of the fourth link arm being connected to the second rotating shaft, the other end of the fourth link arm being connected to the second pull rod, and the second pull rod being connected to the connecting plate.

[0009] Preferably, the first connecting arm includes a first fixed arm and a second fixed arm arranged vertically, and one end of the linkage rod is fixed between the first fixed arm and the second fixed arm.

[0010] Preferably, the cover plate further includes reinforcing ribs, and the connecting plate includes a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are discontinuous at the reinforcing ribs.

[0011] Preferably, the intermediate plate is interrupted at the reinforcing rib and is divided into a first intermediate plate and a second intermediate plate.

[0012] Preferably, the guide plate is spiral-shaped, and when the guide plate is connected and fixed to the cover plate and the intermediate plate, an interstitial tube is provided.

[0013] Preferably, the cover plate is further provided with a residue cleaning port. The residue cleaning port allows for re-threshing of crops that have not been threshed after cleaning, thereby improving the cleanliness of the threshing process.

[0014] The threshing and cleaning device provided in this embodiment can adjust the guide plate in a timely manner according to the maturity of the harvested crop to adjust the speed of the straw passing through the threshing chamber, thereby improving threshing efficiency and threshing quality, avoiding excessive threshing time for straw in the threshing chamber, and preventing loss due to straw being trapped in the threshing drum.

[0015] This utility model also provides a harvester that includes the threshing and cleaning device described in any of the above claims. This harvester is simple to operate, and by using this threshing and cleaning device, the threshing and cleaning system is not subjected to excessive load, thus extending its service life and improving its performance, and reducing harvesting losses. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] Figure 1 A schematic diagram of a threshing and cleaning device provided by this utility model.

[0018] Figure 2 A schematic diagram of the adjustment component of a threshing and cleaning device provided by this utility model.

[0019] Figure 3 A schematic diagram of the adjustment component of another threshing and cleaning device provided by this utility model.

[0020] Figure 4 A schematic diagram of a guide plate structure provided by this utility model.

[0021] Figure 5 for Figure 3 A schematic diagram of a threshing and cleaning device is provided. Figure 1 .

[0022] Figure 6 for Figure 3 A schematic diagram of a threshing and cleaning device is provided. Figure 2 .

[0023] Figure 7 for Figure 3 A schematic diagram of a threshing and cleaning device is provided. Figure 3 .

[0024] Explanation of icon numbers:

[0025] 100-Threshing and cleaning device; 1-Frame; 2-Threshing drum; 3-Cover plate; 31-Adjusting groove; 32-Reinforcing rib; 33-Intermediate tube; 34-Impurity cleaning port; 4-Lower concave plate; 5-Threshing chamber; 6-Guide plate; 7-Adjusting assembly; 71-Connecting plate; 711-First connecting plate; 712-Second connecting plate; 72-Intermediate plate; 721-First intermediate plate; 722-Second intermediate plate; 73-Driver; 74-First connecting rod assembly; 741-First connecting arm; 741a-First fixed arm; 741b-Second fixed arm; 742-First rotating shaft; 743-Second connecting arm; 744-First pull rod; 75-Linkage rod; 76-Second connecting rod assembly; 761-Third connecting arm; 762-Second rotating shaft; 763-Fourth connecting arm; 764-Second pull rod. Detailed Implementation

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0028] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0032] See Figures 1-7 The embodiment provides a harvester that, during crop harvesting, can adjust the residence time of straw in the threshing chamber 5 by adjusting the setting angle of the guide plate 6 in the threshing and cleaning device, thereby reducing the load on the harvester's cleaning system and improving the harvester's operating efficiency. See also Figures 1-3The threshing and cleaning device includes a frame 1, a threshing drum 2, a cover plate 3, a concave plate 4, a guide plate 6, and an adjustment assembly 7. The threshing drum 2, used for threshing crops, is fixedly connected to the frame 1 and is arranged along the longitudinal direction of the harvester. The cover plate 3 is located above the threshing drum 2 and fixedly connected to the frame 1. The cover plate 3 is bent along the outer periphery of the threshing drum 2, with the opening facing downward in a U-shape. The concave plate 4 is also bent along the outer periphery of the threshing drum 2 and is located below the threshing drum 2, with the opening facing upward in a U-shape. The cover plate 3 and the concave plate 4 are hinged to form a threshing chamber 5. The threshing drum 2 rotates in the threshing chamber 5. The straw harvested by the header is fed into the threshing chamber 5, moves within the threshing chamber 5 to thresh the straw, and then the straw is discharged for processing. A guide plate 6 is mounted on the cover plate 3. At least two guide plates 6 are mounted on the cover plate 3 to guide the movement of straw. The guide plates 6 are located on the inner surface of the cover plate 3. Several adjusting grooves 31 are also arranged side-by-side on the cover plate 3. The number of guide plates 6 corresponds to the number of adjusting grooves 31. One end of each guide plate 6 is positioned at and connected to an adjusting groove 31, and the guide plate 6 rotates along the direction of the adjusting groove 31. To facilitate the harvester's adaptability to various crops and allow the operator to adjust the straw's transit time within the drum according to different crop conditions, an adjusting component 7 is provided. The adjusting component 7 is fixed to the upper surface of the cover plate 3 and connected to the guide plates 6 via the adjusting grooves 31 on the cover plate 3. Adjusting the angle of the guide plates 6 on the inner surface of the cover plate 3 changes the transit time of the crop within the threshing chamber 5. The adjustment assembly 7 includes a connecting plate 71 for connecting the guide plates 6 in series, an intermediate plate 72 for fixing the guide plates 6, a driver 73 fixed to the cover plate 3 for providing driving power for adjusting the angle of the guide plates 6, and a first linkage group 74 for transmission. The connecting plate 71 is disposed on the upper surface of the cover plate 3 and connected to the guide plates 6 through the adjustment groove 31. The connecting plate 71 connects multiple guide plates 6 in series, facilitating the adjustment of the setting angle of the guide plates 6. The intermediate plate 72 is fixed to the upper surface of the cover plate 3 and is arranged parallel to the connecting plate. The guide plates 6 are fixed on the intermediate plate 72. One end of the first linkage group 74 is connected to the driver 73, and the other end is connected to the connecting plate 71. The driver 73 drives the connecting plate 71, which in turn drives the guide plates 6 to adjust their setting angle position. When adjusting the setting angle position, the guide plates 6 rotate around the position fixedly connected to the intermediate plate 72. Specifically, the driver 73 drives the first connecting rod assembly 74 to move the connecting plate 71. The guide plate 6 connected to the connecting plate 71 rotates along the setting direction of the adjusting groove 31 on the cover plate 3. The tilt angle of the guide plate 6 is directly proportional to the speed at which the straw passes through the threshing chamber 5. The larger the tilt angle of the guide plate 6, the faster the straw passes through the threshing chamber 5. It should be noted that the driver 73 is designed to allow the harvester operator to control and adjust the tilt angle of the guide plate 6 at any time. The driver 73 can be an actuator with electronic control functions, such as a drive motor or a solenoid valve, which will not be described separately here.Specifically, the first linkage group 74 includes a first connecting arm 741 connected to the driver 73, a second connecting arm 743 connected to the first connecting arm 741, and a first pull rod 744. One end of the first connecting arm 741 is connected to the driver 73, and the other end is connected to the second connecting arm 743. The other end of the second connecting arm 743 is connected to the first pull rod 744, and the other end of the first pull rod 744 is connected to the connecting plate 71. During the process of the first connecting arm 741 transmitting the driving power of the driver 73 to the first pull rod 744 to pull the connecting plate 71, due to the segmented transmission, a first rotating shaft 742 is set on the cover plate 3 to improve the reliability of power transmission and support strength. The first rotating shaft 742 is set between the first connecting arm 741 and the second connecting arm 743. One end of the first connecting arm 741 is sleeved on the first rotating shaft 742 and rotates around the first rotating shaft 742 to limit the transmission range of the first connecting arm 741 and ensure the reliability of power transmission of the driver 73.

[0033] See Figures 3-7 To ensure that the guide plates 6 on the cover plate 3 have a consistent tilt angle, in a preferred embodiment, the adjusting assembly 7 is further provided with a linkage rod 75 and a second linkage group 76. The linkage rod 75 is arranged parallel to the threshing drum 2. One end of the linkage rod 75 is connected to a first linkage group 74, and the other end is connected to a second linkage group 76. One end of the second linkage group 76 is also connected to a connecting plate 71. The second linkage group 76 and the first linkage group 74 work together to adjust the angle of the guide plates 6 on the cover plate 3 so that they are consistent. The second linkage group 76 includes a third link 761 connected to the linkage rod 75. The other end of the third link 761 is connected to a fourth link 763, and the other end of the fourth link 763 is connected to a second pull rod 764. The second pull rod 764 is connected to the other end of the connecting plate 71 to adjust the angle of the guide plates 6 on the connecting plate 71. Similarly, a second rotating shaft 762 is also provided between the third connecting arm 761 and the fourth connecting arm 763. The second rotating shaft 762 is also fixed to the surface of the cover plate 3. One end of the third connecting arm 761 is sleeved on the second rotating shaft 762, and the other end of the fourth connecting arm 763 is also placed on the second rotating shaft 762 to ensure the reliability and stability of the second connecting rod assembly 76 in adjusting the angle of the guide plate 6 driven by the driving connecting plate 71.

[0034] Optionally, the first connecting arm 741 includes a first fixed arm 741a and a second fixed arm 741b arranged vertically. One end of the linkage rod 75 is fixed between the first fixed arm 741a and the second fixed arm 741b, clamping the linkage rod 75 to ensure the reliability of power transmission of the linkage rod 75. During the process of driving the first connecting arm 741, the driver 73 simultaneously transmits power from the linkage rod 75 to the second linkage group 76 to ensure the consistency and synchronization of the angle adjustment of the guide vane 6.

[0035] In this embodiment, because the threshing drum 2 is relatively long, and because concave plates 4 with different gaps are used when setting the threshing zone and straw separation zone of the threshing drum 2, a reinforcing rib 32 is also provided on the upper cover plate 3 to prevent deformation. The reinforcing rib 32 automatically divides the guide plate 6 into two parts, and the setting angle of the guide plate 6 is adjusted by the adjusting component 7. In addition, the structure of the connecting plate 71 and the intermediate plate 72 is adjusted. The connecting plate 71 includes a first connecting plate 711 and a second connecting plate 712, which are intermittently arranged on both sides of the reinforcing rib 32. The intermediate plate 72 is also intermittently arranged on the reinforcing rib 32, including a first intermediate plate 721 and a second intermediate plate 722, which are respectively located on both sides of the reinforcing rib 32.

[0036] To prevent wear and tear on the guide plate 6, an interstitial tube 33 is provided when the guide plate 6 is connected to the cover plate 3, and an interstitial tube 33 is also provided when the guide plate 6 is fixedly connected to the intermediate plate, in order to prevent the guide plate 6 from falling off due to wear. At the same time, the guide plate 6 is designed in a spiral shape, that is, the two ends of the guide plate 6 are not on the same straight line, so that the straw can pass through the threshing chamber 5 more smoothly.

[0037] The threshing and cleaning device provided in the embodiment also has an impurity cleaning port 34 on its cover plate 3. The impurity cleaning port 34 is located at the feeding inlet of the threshing and cleaning device and is used to re-thresh the crops that have not been completely threshed after screening by the concave plate 4, thereby increasing the cleanliness of the grains.

[0038] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A threshing and cleaning device, characterized in that include: frame; A threshing drum, fixed to the frame, is used for threshing crops; A cover plate is disposed above the threshing drum and fixedly connected to the frame. The cover plate is bent along the outer periphery of the threshing drum, and adjustment grooves are arranged side by side on the cover plate. A concave plate is bent along the outer periphery of the threshing drum and disposed below the threshing drum and hinged to the cover plate to form a threshing chamber. The threshing drum is longitudinally disposed in the threshing chamber. A flow guide plate is arranged side by side on the inner surface of the cover plate, and one end of the flow guide plate is connected to the adjustment groove; An adjustment component, fixed to the upper surface of the cover plate, is used to adjust the setting angle of the guide plate; The adjustment component includes: A connecting plate is disposed on the upper surface of the cover plate, and the connecting plate is connected to the guide plate through the adjustment groove; An intermediate plate, which is parallel to the connecting plate and fixed to the upper surface of the cover plate, is used to fix the guide plate; A driver, the driver being disposed on the cover plate; The first linkage group has one end connected to the driver and the other end connected to the connecting plate; The driver drives the first linkage group to move the connecting plate on the cover plate. The guide plate on the connecting plate rotates along the setting direction of the adjustment groove with the fixed point on the middle plate as the center, thereby adjusting the tilt angle of the guide plate and thus adjusting the speed at which the straw passes through the threshing chamber.

2. A threshing and cleaning apparatus as claimed in claim 1, characterised in that The adjustment assembly also includes a linkage rod and a second linkage group. The linkage rod is arranged parallel to the threshing drum. One end of the linkage rod is connected to the first linkage group, and the other end is connected to the second linkage group.

3. A threshing and cleaning apparatus as claimed in claim 2, wherein The first linkage assembly includes a first connecting arm connected to the driver, the other end of the first connecting arm being fixed to a first rotating shaft and rotating around the first rotating shaft, one end of the second connecting arm being connected to the first rotating shaft, the other end of the second connecting arm being connected to a first pull rod, and the first pull rod being connected to the connecting plate.

4. A threshing and cleaning apparatus as claimed in claim 3, wherein The second linkage assembly includes a third link arm connected to the linkage rod, the other end of the third link arm being fixed to the second rotating shaft and rotating around the second rotating shaft, one end of the fourth link arm being connected to the second rotating shaft, the other end of the fourth link arm being connected to the second pull rod, and the second pull rod being connected to the connecting plate.

5. A threshing and cleaning apparatus as claimed in claim 4, wherein The first connecting arm includes a first fixed arm and a second fixed arm arranged vertically, and one end of the linkage rod is fixed between the first fixed arm and the second fixed arm.

6. A threshing and cleaning apparatus as claimed in claim 5, wherein The cover plate also includes reinforcing ribs, and the connecting plate includes a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are interrupted at the reinforcing ribs.

7. A threshing and cleaning apparatus as claimed in claim 6, wherein The intermediate plate is interrupted at the reinforcing rib and is divided into a first intermediate plate and a second intermediate plate.

8. A threshing and cleaning apparatus as claimed in claim 7, characterised in that The guide plate is spiral-shaped, and when the guide plate is connected and fixed to the cover plate and the intermediate plate, an interstitial tube is provided.

9. A threshing and cleaning apparatus as claimed in claim 8, characterised in that, The cover plate is also provided with a waste removal port.

10. A harvester characterized by Includes the threshing and cleaning apparatus as described in any one of claims 1-9.

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