Harvester, double axial flow threshing device and drum cover thereof

Abstract

The utility model relates to the field of harvesting machinery, and discloses a harvesting machinery, a double axial flow threshing device and a drum cover thereof, wherein the drum cover comprises a first cover plate (1) and a second cover plate (2) and a plurality of adjustable guide plates (3) adjustably mounted in the first cover plate and the second cover plate, wherein each of the adjustable guide plates (3) is rotatably connected to the first cover plate or the second cover plate and a connecting plate (4), and the connecting plate (4) is slidably mounted to the first cover plate or the second cover plate to allow the connecting plate (4) to slide relative to the first cover plate and the second cover plate along the axial flow direction, and synchronously adjust the angle of each of the adjustable guide plates (3) relative to the axial flow direction. The angle of the adjustable guide plates in the drum cover can be adjusted according to the movement requirements of the crops in the threshing device, so as to better adapt to the threshing requirements of different crops.

Description

Technical Field

[0001] The utility model relates to a harvesting machine, in particular to a drum cover of a double-axial flow threshing device. On this basis, the utility model also relates to a double-axial flow threshing device comprising the drum cover and a harvesting machine comprising the double-axial flow threshing device. Background Art

[0002] For example, a fully-fed grain harvesting machine such as a combine harvester usually includes functional modules such as a header, a crop conveying device, a threshing device, and a cleaning system. After the crop straw is cut off by the header, it is transported to the threshing device by the crop conveying device; as the threshing drum rotates, the threshing device applies mechanical force to the crop to separate the grain from the straw; the fallen grains fall into the cleaning system, and a vibrating screen and a blower are used to separate the grains from the crushed straw and other impurities. According to the flow direction of the crop, the threshing device can be divided into two categories: axial flow and tangential flow. Among them, the axial flow threshing device is widely used in various harvesting machinery due to its simple structure, high threshing rate, and long separation time.

[0003] Axial flow threshing devices are divided into single-axial flow threshing devices and double-axial flow threshing devices. For situations where a large amount of crops need to be processed efficiently, double-axial flow threshing devices may be more suitable; for small-scale operations or specific crops, single-axial flow threshing devices are more cost-effective due to their simple structure.

[0004] The threshing device is provided with a drum cover, and a plurality of guide plates arranged obliquely relative to the axial flow direction are provided on the inner side of the drum cover. When the threshing drum rotates, the crops entering the threshing device can be guided by the guide plates to move axially while moving circumferentially with the threshing drum until they are discharged from the axial end of the threshing device. For a dual-axial flow threshing device, its guide plates are usually welded to the inner side of the drum cover. When harvesting different crops, the harvesting efficiency and threshing effect are very unstable. For different crops such as corn, wheat, and soybeans, the guide plates have a great influence on the movement direction and speed of the crops in the threshing device. Therefore, a reasonable setting of the guide plate angle can make the crops more effectively threshed and separated, improve work efficiency, and reduce the breakage rate. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem that the dual-axial flow threshing device in the prior art cannot adapt well to the threshing requirements of different crops, and to provide a drum cover for the dual-axial flow threshing device, wherein the angle of at least part of the guide plate in the drum cover can be adjusted according to the movement requirements of the crops in the threshing device to better adapt to the threshing requirements of different crops.

[0006] In order to achieve the above-mentioned objectives, the utility model provides, on the one hand, a drum cover of a dual-axial flow threshing device, comprising a first cover plate and a second cover plate connected to each other as a whole and extending parallel to each other, and a plurality of adjustable guide plates adjustably installed in the first cover plate and the second cover plate, wherein each of the adjustable guide plates is rotatably connected to the first cover plate or the second cover plate at a portion close to the mutual connection of the first cover plate and the second cover plate, and is rotatably connected to a connecting plate at a portion away from the first cover plate and the second cover plate, and the connecting plate is slidably installed to the first cover plate or the second cover plate to allow the connecting plate to slide relative to the first cover plate and the second cover plate along the axial flow direction, and synchronously adjust the angle of each of the adjustable guide plates relative to the axial flow direction.

[0007] Preferably, the first cover plate and the second cover plate are respectively connected to the cover plate base on the side opposite to each other so as to be connected to each other as a whole through the cover plate base, and a pair of rotating arms respectively connected to a pair of the adjustable guide plates are provided on the outer side of the cover plate base so as to synchronously adjust the angle of each adjustable guide plate relative to the axial flow direction by synchronously driving the rotating arms to rotate.

[0008] Preferably, a pull rod which can be driven to move forward and backward in a direction parallel to the axial flow is also provided on the outer side of the cover base, and a slide groove is formed on the rotating arm, and the pull rod cooperates with the slide groove so that the rotating arm can be driven to rotate by driving the pull rod to move.

[0009] Preferably, the pull rod is transmission-connected to a power unit or a manual control unit so as to be motorized or manually controlled to move forward and backward in a direction parallel to the axial flow.

[0010] Preferably, the inner sides of the first cover plate and the second cover plate are respectively connected with a guide support plate which covers the connecting plate and at least partially extends obliquely toward the top of the cover plate.

[0011] Preferably, a fixed guide plate is further provided on the inner side of the first cover plate and the second cover plate, one side of the fixed guide plate is connected to the side of the guide support plate facing away from the adjustable guide plate, and the other side is correspondingly connected to the inner side surface of the first cover plate or the second cover plate.

[0012] Preferably, along the axial flow direction, the inner sides of the first cover plate and the second cover plate are further provided with a front guide plate located upstream of the adjustable guide plate.

[0013] Preferably, the first cover plate and the second cover plate are respectively formed to have a trapezoidal cross-section, and / or the inner sides of the first cover plate and the second cover plate are provided with limiting elements, and the connecting plate can be slidably mounted to the first cover plate or the second cover plate correspondingly through the limiting elements.

[0014] The second aspect of the utility model provides a double-axial flow threshing device, comprising the above-mentioned drum cover and a threshing drum rotatably arranged on the inner sides of the first cover plate and the second cover plate respectively.

[0015] The third aspect of the utility model provides a harvesting machine including the above-mentioned double-axial flow threshing device.

[0016] Through the above technical scheme, according to different crops, the drum cover of the utility model can be controlled so that its connecting plate slides relative to the first cover plate and the second cover plate along the axial flow direction, so as to synchronously adjust the angles of each adjustable guide plate relative to the axial flow direction to guide the corresponding crops to move in the threshing device with appropriate movement direction and speed, thereby better adapting to the threshing needs of different crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an inner side view of the drum cover of the double axial flow threshing device according to the utility model;

[0018] Figure 2 yes Figure 1 An outer side view of the drum cover of the double axial flow threshing device;

[0019] Figure 3 Observed from another perspective Figure 1 An inside view of the drum cover of the middle dual axial flow threshing device;

[0020] Figure 4 The guide support plate and fixed guide plate are removed. Figure 1 Projection view of the drum cover of the middle dual axial flow threshing device;

[0021] Figure 5 yes Figure 1 Front view of the adjustable guide plate, connecting plate, rotating arm and pull rod of the drum cover of the middle double axial flow threshing device;

[0022] Figure 6 yes Figure 5 A top view of the adjustable deflector, connecting plate, rotating arm and pull rod.

[0023] Description of Reference Numerals

[0024] 1-first cover plate; 2-second cover plate; 3-adjustable guide plate; 4-connecting plate; 5-limiting element; 6-cover plate base; 7-rotating arm; 7a-slide groove; 8-pull rod; 9-guide support plate; 10-fixed guide plate; 11-front guide plate. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0026] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" generally refer to up, down, left, right as shown in the reference drawings; "inside and outside" refer to inside and outside relative to the outline of each component itself.

[0027] Reference Figures 1 to 6 As shown, according to a preferred embodiment of the utility model, the drum cover of the double-axial flow threshing device can be installed above the threshing drum to guide the movement of crops in the threshing device. The drum cover includes a first cover plate 1 and a second cover plate 2, which are connected to each other as a whole and extend in parallel with each other, and a plurality of (10 are shown in the figure) adjustable guide plates 3 are adjustably installed on the inner side of each of them. Among them, the first cover plate 1 and the second cover plate 2 serve as the installation base of other parts in the drum cover, and they can be formed to have a trapezoidal cross-section respectively, so that the drum cover has a double trapezoidal structure as a whole, and it is convenient to fix and adjust the adjustable guide plate 3. It can be understood that the first cover plate 1 and the second cover plate 2 can be directly connected to each other or indirectly connected to each other through an intermediate piece, such as being connected to each other through a cover plate base 6 as described later.

[0028] Since the first cover plate 1 and the second cover plate 2 extend in parallel with each other, they have mutually connected parts and mutually distant parts. When the first cover plate 1 and the second cover plate 2 are respectively connected to the cover plate base 6, the mutually connected parts are the parts close to the cover plate base 6. In the parts where the first cover plate 1 and the second cover plate 2 are distant from each other, connecting plates 4 are respectively installed on the inner sides of the first cover plate 1 and the second cover plate 2, and the connecting plates 4 are connected to be able to slide relative to the first cover plate 1 and the second cover plate 2 along the axial flow direction. In the parts where the first cover plate 1 and the second cover plate 2 are distant from each other, two groups of adjustable guide plates 3 corresponding to the first cover plate 1 and the second cover plate 2 are rotatably connected to the connecting plate 4; in the parts where the first cover plate 1 and the second cover plate 2 are connected to each other, the adjustable guide plates 3 are rotatably connected to the first cover plate 1 or the second cover plate 2. For this purpose, through holes for rotatably connecting the adjustable guide plates 3 can be formed on the first cover plate 1 and the second cover plate 2. When the operation is performed so that the angle of one of the adjustable guide plates 3 is changed, or when the operation is performed so that the connecting plate 4 slides relative to the first cover plate 1 and the second cover plate 2 along the axial flow direction, the angles of all the adjustable guide plates 3 will be adjusted synchronously.

[0029] Thus, the dual-axial flow threshing device using the drum cover can better adapt to the threshing requirements of different crops. According to different crops, the drum cover can be manipulated so that its connecting plate 4 slides relative to the first cover plate 1 and the second cover plate 2 along the axial flow direction, so as to synchronously adjust the angle of each adjustable guide plate 3 relative to the axial flow direction to guide the corresponding crops to move in the threshing device in a suitable movement direction and speed, thereby better adapting to the threshing requirements of different crops.

[0030] In a preferred embodiment, the first cover plate 1 and the second cover plate 2 are connected to the cover plate base 6 on the opposite side to each other, so as to be connected to each other as a whole through the cover plate base 6. A pair of rotating arms 7 are provided on the outer side of the cover plate base 6, which are respectively connected to a pair of adjustable guide plates 3 by transmission, so that the angle of each adjustable guide plate 3 relative to the axial flow direction can be synchronously adjusted by synchronously driving the rotating arms 7 to rotate. In the preferred embodiment shown in the figure, the rotating arms 7 are respectively connected to a pair of adjustable guide plates 3 closest to the outlet end in the first cover plate 1 and the second cover plate 2. Among them, the adjustable guide plate 3 can be connected to a rotating shaft extending through the through hole on the first cover plate 1 or the second cover plate 2, and the rotating arm 7 is connected to the rotating shaft, so that when the rotating arm 7 rotates, the adjustable guide plate 3 rotates around the rotating shaft to achieve angle adjustment. Since the rotating arm 7 is arranged on the outer side of the cover plate base 6, the power unit or transmission element can be conveniently arranged.

[0031] In order to facilitate synchronously driving the two rotating arms 7 to rotate, a slide groove 7a may be formed on the rotating arm 7. At the same time, a pull rod 8 that can be driven to move forward and backward in a direction parallel to the axial flow is further provided on the outer side of the cover base 6. The pull rod 8 cooperates with the two rotating arms 7 through the slide groove 7a. Therefore, when the pull rod 8 is driven to move forward and backward, the rotating arm 7 can be driven to rotate, thereby achieving angle adjustment of the adjustable guide plate 3. This is conducive to conveniently driving the rotating arm 7 to rotate.

[0032] The pull rod 8 can be driven by motor or manual mode, and for this purpose, the pull rod 8 can be connected to a power unit or a manual control unit such as a motor, a hydraulic rod, etc. In addition, by setting a corresponding control module, the operator can directly drive the pull rod 8 in the cab.

[0033] In a more preferred embodiment of the present invention, Figure 1 and Figure 3As shown, the inner sides of the first cover plate 1 and the second cover plate 2 can also be connected with a guide support plate 9 covering the connecting plate 4 and extending at least partially obliquely toward the top of the cover plate. Therefore, when the connecting plate 4 is slidably mounted to the first cover plate 1 and the second cover plate 2 by means of a limiting element 5 welded to the inner sides of the first cover plate 1 and the second cover plate 2, the connecting plate 4 is shielded by the guide support plate 9 and can effectively prevent the crops from directly contacting the connecting plate 4. This hidden design can effectively avoid the failure of the adjustment function of the adjustable guide plate 3 due to the crops getting stuck in the space between the connecting plate 4 and other components (such as the limiting element 5). At the same time, the guide support plate 9 extends obliquely toward the top of the cover plate, which is conducive to the smooth movement of the crops in the threshing device.

[0034] Furthermore, a fixed guide plate 10 may be provided on the inner side of the first cover plate 1 and the second cover plate 2, one side of the fixed guide plate 10 being connected to the side of the guide support plate 9 away from the adjustable guide plate 3, and the other side being correspondingly connected to the inner side of the first cover plate 1 or the second cover plate 2. Through this arrangement, not only can the guiding function of the fixed guide plate 10 be utilized to guide the movement direction of the crops, but also the structural strength of the guide support plate 9 can be effectively enhanced to ensure structural stability.

[0035] Along the axial flow direction, the inner sides of the first cover plate 1 and the second cover plate 2 may also be provided with a front guide plate 11 located upstream of the adjustable guide plate 3 and the fixed guide plate 10. After being transported to the threshing device, the crops first pass through the front guide plate 11, and then pass through the downstream fixed guide plate 10 and the adjustable guide plate 3. Generally, the fixed guide plate 10 and the front guide plate 11 may be welded to the inner sides of the first cover plate 1 and the second cover plate 2.

[0036] During the manufacturing process, firstly, the adjustable guide plates 3 are assembled with the connecting plate 4, the first cover plate 1 and the second cover plate 2, and then the limiting element 5 is welded to the first cover plate 1 and the second cover plate 2 to limit the position of the connecting plate 4. When the fixed guide plate 10 and the front guide plate 11 are welded to the first cover plate 1 and the second cover plate 2, their ends should be fully welded, and the middle part should be intermittently welded to prevent the roller cover from deforming. With the fixed guide plate 10 as a reference, the guide support plate 9 is welded to the side of the fixed guide plate 10 facing the connecting plate 4, and is extended obliquely toward the top of the cover plate.

[0037] By utilizing the drum cover of the utility model, when the crop to be harvested and threshed is wheat, the user can adjust the adjustable guide plate to have a larger angle relative to the cross-section of the threshing drum, so that the wheat can pass through quickly, thereby providing a faster harvesting speed, a higher harvesting efficiency, and a lower grain breakage rate; when the crop to be harvested and threshed is corn, the user can adjust the adjustable guide plate to have a smaller angle relative to the cross-section of the threshing drum, so that the corn can pass through slowly, thereby providing a better threshing effect.

[0038] On this basis, the utility model also provides a dual-axial flow threshing device comprising the above-mentioned drum cover and a threshing drum rotatably arranged on the inner sides of the first cover plate 1 and the second cover plate 2. During the operation of the dual-axial flow threshing device, the operator can synchronously adjust the angles of each adjustable guide plate relative to the axial flow direction as needed to guide the corresponding crops to move in the threshing device in a suitable direction and speed, thereby better adapting to the threshing needs of different crops.

[0039] In addition, the utility model also provides a harvesting machine including the above-mentioned double-axial flow threshing device, such as a wheat harvester, a rice harvester or a corn harvester.

[0040] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A drum cover of a double axial flow threshing device, characterized in that: The invention comprises a first cover plate (1) and a second cover plate (2) which are connected to each other as a whole and extend in parallel with each other, and a plurality of adjustable guide plates (3) which are adjustably mounted inside the first cover plate (1) and the second cover plate (2), wherein each of the adjustable guide plates (3) is rotatably connected to the first cover plate (1) or the second cover plate (2) at a portion close to the portion where the first cover plate (1) and the second cover plate (2) are connected to each other, and is rotatably connected to a connecting plate (4) at a portion where the first cover plate (1) and the second cover plate (2) are away from each other, and the connecting plate (4) is slidably mounted to the first cover plate (1) or the second cover plate (2) to allow the connecting plate (4) to slide relative to the first cover plate (1) and the second cover plate (2) along an axial flow direction, and to synchronously adjust the angle of each of the adjustable guide plates (3) relative to the axial flow direction.

2. The drum cover of the double axial flow threshing device according to claim 1 is characterized in that: The first cover plate (1) and the second cover plate (2) are respectively connected to a cover plate base (6) on one side opposite to each other so as to be connected to each other as a whole through the cover plate base (6), and a pair of rotating arms (7) are respectively provided on the outer side of the cover plate base (6) and are respectively connected to a pair of adjustable guide plates (3) so as to synchronously adjust the angle of each adjustable guide plate (3) relative to the axial flow direction by synchronously driving the rotating arms (7) to rotate.

3. The drum cover of the double axial flow threshing device according to claim 2 is characterized in that: The outer side of the cover base (6) is also provided with a pull rod (8) which can be driven to move forward and backward in a direction parallel to the axial flow. A slide groove (7a) is formed on the rotating arm (7). The pull rod (8) cooperates with the slide groove (7a) so that the rotating arm (7) can be driven to rotate by driving the pull rod (8) to move.

4. The drum cover of the double axial flow threshing device according to claim 3 is characterized in that: The pull rod (8) is transmission-connected to a power unit or a manual control unit so as to be motorized or manually controlled to move forward and backward in a direction parallel to the axial flow.

5. The drum cover of the double axial flow threshing device according to claim 1 is characterized in that: The inner sides of the first cover plate (1) and the second cover plate (2) are respectively connected with a flow guide support plate (9) which covers the connection plate (4) and at least partially extends obliquely toward the top of the cover plate.

6. The drum cover of the double axial flow threshing device according to claim 5, characterized in that: A fixed guide plate (10) is also provided on the inner side of the first cover plate (1) and the second cover plate (2), one side of the fixed guide plate (10) is connected to the side of the guide support plate (9) facing away from the adjustable guide plate (3), and the other side is correspondingly connected to the inner side surface of the first cover plate (1) or the second cover plate (2).

7. The drum cover of the double axial flow threshing device according to claim 1, characterized in that: Along the axial flow direction, the inner sides of the first cover plate (1) and the second cover plate (2) are also provided with a front guide plate (11) located upstream of the adjustable guide plate (3).

8. The drum cover of the double axial flow threshing device according to claim 1, characterized in that: The first cover plate (1) and the second cover plate (2) are respectively formed to have a trapezoidal cross-section, and / or the inner sides of the first cover plate (1) and the second cover plate (2) are provided with a limiting element (5), and the connecting plate (4) can be slidably mounted to the first cover plate (1) or the second cover plate (2) via the limiting element (5).

9. A double-axial flow threshing device, characterized in that: It comprises the drum cover according to any one of claims 1 to 8 and a threshing drum rotatably arranged on the inner sides of the first cover plate (1) and the second cover plate (2).

10. A harvesting machine, characterized in that: It comprises the double axial flow threshing device according to claim 9.

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