Return device, cleaning system and combine harvester
By designing a return device with protrusions and through holes in the combine harvester, the problem of debris accumulation and blockage is solved, and the rapid dispersion and treatment of debris is achieved, thereby improving the cleaning efficiency of combine harvesters with small and medium feed rates.
Patent Information
- Application Number
- CN202423021741.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-05
AI Technical Summary
In existing combine harvesters, the problem of debris accumulating on the return plate or cleaning screen, causing blockages, is particularly pronounced in small and medium-capacity combine harvesters with limited internal space.
Design a return device. The return disc includes a push section and a grid section. The top surface of the push section is provided with a protrusion, and the grid section has through holes. The return disc is driven to reciprocate in the front-back direction by a transmission component, so that the impurities flow quickly and are dispersed and sprinkled into the cleaning screen to avoid accumulation.
It effectively shortens the residence time of impurities on the return plate, avoids the accumulation and blockage of impurities on the return plate and cleaning screen, and improves the efficiency of impurity treatment and cleaning effect.
Smart Images
Figure CN223730311U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of agricultural harvesting machinery, and concretely relates to a return device, a cleaning system and a combine harvester. BACKGROUND
[0002] In the existing combine harvester, the separation concave, the return disc and the cleaning screen are arranged in sequence from top to bottom, and the sundries separated from the separation concave will fall onto the return disc, the return disc reciprocates along the front-rear direction to push and guide the sundries forward to the front end of the cleaning screen, so that the sundries can be fully cleaned in the cleaning screen. However, in the actual operation process, especially in the small and medium-sized feeding amount combine harvester with small internal space, the sundries are prone to accumulate on the return disc or the cleaning screen, which causes the sundries to be blocked. SUMMARY
[0003] In view of the above deficiencies or defects in the prior art, the utility model provides a return device, a cleaning system and a combine harvester, aiming at solving the technical problem that the sundries are prone to accumulate on the return disc or the cleaning screen, which causes the sundries to be blocked.
[0004] To achieve the above-mentioned purpose, the utility model provides a return device, which comprises:
[0005] The return disc comprises a pushing section and a grating section arranged in sequence from back to front, the top surface of the pushing section is provided with a plurality of protruding parts arranged at intervals and deviated to the front, and the grating section is provided with a plurality of through holes arranged at intervals and penetrating up and down;
[0006] The transmission member is connected with the return disc and can swing back and forth to drive the return disc to reciprocate along the front-rear direction.
[0007] Optionally, the grating section extends in a wave shape along the front-rear direction, and the protruding part is deviated to the front.
[0008] Optionally, the plurality of through holes are divided into multiple groups, the multiple groups of through holes are arranged at equal intervals along the front-rear direction, and the multiple through holes in each group of through holes are arranged at equal intervals along the left-right direction.
[0009] Optionally, the grating section is a plate body structure and forms a plurality of through holes by stamping.
[0010] Optionally, the grating section is a steel wire mesh structure.
[0011] Optionally, the plurality of protruding parts are arranged at equal intervals along the front-rear direction, and the protruding part is in a strip shape extending along the left-right direction.
[0012] Optionally, the transmission member is a swing arm, and one end of the swing arm is movably connected to the bottom of the rear end of the return disc.
[0013] Optionally, the return tray comprises:
[0014] a return tray body forming the pushing section and the grid section;
[0015] two guide plates respectively extending upwardly and backwardly from left and right side edges of the return tray body.
[0016] The utility model also provides a cleaning system, the cleaning system comprises:
[0017] a separation concave plate arranged along the front-back direction;
[0018] a cleaning screen arranged along the front-back direction and arranged directly below the separation concave plate;
[0019] the return device, the return tray is arranged between the separation concave plate and the cleaning screen and is arranged downwardly and backwardly;
[0020] a driving member drivingly connected with the transmission member to drive the transmission member to swing back and forth.
[0021] The utility model also provides a combine harvester, the combine harvester comprises the cleaning system.
[0022] Through the above technical scheme, in the return device of the utility model, the return tray comprises a pushing section and a grid section arranged in sequence from back to front, the top surface of the pushing section is provided with a plurality of protruding parts arranged at intervals and all inclined to the front, so that the pushing section has good waste pushing capacity, the grid section is provided with a plurality of through holes arranged at intervals and penetrating through the upper and lower parts, so that part of the waste can be separated from the return tray in advance through the through holes, and in this way, when the return device is applied to the combine harvester, the waste separated from the separation concave plate will fall into the return tray, the waste falling into the pushing section can flow to the grid section quickly under the pushing of the protruding parts, and part of the waste falling into and flowing to the grid section can be separated from the return tray in advance through the through holes and scattered and fall into the cleaning screen below, in this way, the residence time of the waste on the return tray is shortened, the problem of waste blockage caused by the accumulation of the waste on the return tray is avoided, at the same time, the problem of waste blockage caused by the accumulation of the waste on the cleaning screen due to the fact that the waste on the return tray falls into the cleaning screen through the front end of the return tray can be avoided.
[0023] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS
[0024] The drawings are used to provide further understanding of the utility model and constitute a part of the specification, and are used to explain the utility model together with the following specific embodiments, but do not constitute the limitation to the utility model. In the drawings:
[0025] Figure 1 This is a three-dimensional structural diagram of the return device (transmission component omitted) in one embodiment of the present utility model;
[0026] Figure 2 for Figure 1 Side sectional view of the return device in the middle;
[0027] Figure 3 This is a three-dimensional structural diagram of the return device (transmission component omitted) in one embodiment of the present utility model;
[0028] Figure 4 This is a partial structural schematic diagram of a combine harvester in one embodiment of the present invention.
[0029] Explanation of reference numerals in the attached figures:
[0030] 1 Return disk
[0031] 11 Pushing section 12 Grid section
[0032] 13. Deflector
[0033] 2. Transmission components
[0034] 3. Separating concave plate
[0035] 4. Cleaning sieve
[0036] 5 Threshing concave plate
[0037] 6. Shaking board Detailed Implementation
[0038] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0039] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0040] In this utility model, unless otherwise stated, directional terms such as "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0041] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0042] This utility model first provides a return device.
[0043] In one embodiment, reference is made to the appendix. Figure 1 To be continued Figure 4 As shown, the return device includes:
[0044] The return plate 1 includes a push section 11 and a grid section 12 arranged sequentially from back to front. The top surface of the push section 11 is provided with a number of protrusions that are spaced apart and all protrude forward. The grid section 12 is provided with a number of through holes that are spaced apart and pass through vertically.
[0045] The transmission component 2 is connected to the return plate 1 and can swing back and forth to drive the return plate 1 to reciprocate in the front and back direction.
[0046] In the return device of this embodiment, the return disk 1 includes a pushing section 11 and a grid section 12 arranged sequentially from back to front. The top surface of the pushing section 11 has multiple protrusions arranged at intervals and all protruding forward, which gives the pushing section 11 good ability to push away debris. The grid section 12 has multiple through holes arranged at intervals and extending vertically, which allows some debris to be removed from the return disk 1 in advance through the through holes. With this configuration, when the return device is applied to a combine harvester, the debris (mainly including long stems, short stalks, residual ears, grains, husks, dust, etc.) that are removed from the separating concave plate 3 will fall into the grid. Upon reaching the return plate 1, the impurities falling into the push section 11 can quickly flow to the grid section 12 under the push of the protrusion. The impurities falling into and flowing to the grid section 12 can leave the return plate 1 in advance through the through holes and fall more dispersedly into the cleaning screen 4 located below. In this way, the residence time of impurities on the return plate 1 is shortened, avoiding the problem of impurity blockage caused by the accumulation of impurities on the return plate 1. At the same time, it can prevent the impurities on the return plate 1 from falling into the cleaning screen 4 in a concentrated manner through the front end of the return plate 1, which would cause the impurities to accumulate on the cleaning screen 4 and cause impurity blockage.
[0047] In practical applications, the transmission component 2 is used to drive the drive component, so that it swings back and forth under the drive of the drive component to drive the return disk 1 to reciprocate in the back-and-forth direction. Specifically, the transmission component 2 can be a swing arm or a sprocket.
[0048] In one embodiment, reference is made to the appendix. Figure 1 and attached Figure 2 As shown, the grid segment 12 extends in a wavy shape along the front-to-back direction, with the protruding portion protruding towards the front. This configuration effectively improves the waste pushing capability of the grid segment 12 and further shortens the residence time of waste on the return disk 1.
[0049] Specifically, the grid segment 12 can be a corrugated plate structure.
[0050] In one embodiment, the multiple through holes are divided into multiple groups, and the multiple groups of through holes are arranged at equal intervals along the front-to-back direction. The multiple through holes in each group are arranged at equal intervals along the left-to-right direction. This arrangement ensures that the multiple through holes are evenly distributed on the grid section 12, so that some impurities can be dispersed and evenly sprinkled onto the cleaning screen 4 located below through the multiple through holes.
[0051] Specifically, the through hole can be round, waist-shaped, polygonal, or elliptical, etc.
[0052] Of course, in other embodiments, the multiple through holes can also be distributed in other ways. For example, the multiple through holes are divided into multiple groups, and the multiple groups of through holes are arranged at equal intervals along the direction from the center to the edge of the grid segment 12. The multiple through holes in each group are arranged at equal intervals around the center of the grid segment 12.
[0053] In one embodiment, the grid segment 12 is a plate structure with multiple through holes formed by stamping. This gives the grid segment 12 good structural strength.
[0054] In one embodiment, reference is made to the appendix. Figure 3 As shown, grid segment 12 is a steel wire mesh structure.
[0055] Understandably, the mesh size of the wire mesh structure facilitates the removal and falling of debris, and its lighter weight effectively reduces the load on the drive components, resulting in lower production costs.
[0056] Specifically, the grid segment 12 can be a steel wire woven mesh, which is easy to carry and easy to process and manufacture. It can carry a variety of steel wire woven meshes of different specifications for different crops, making it more adaptable.
[0057] In one embodiment, reference is made to the appendix. Figure 1 To be continued Figure 3 As shown, multiple protrusions are arranged at equal intervals along the front-to-back direction, and the protrusions are strip-shaped extending along the left-to-right direction. This arrangement effectively further improves the redundant pushing capability of the pushing section 11.
[0058] Specifically, the pushing section 11 can be a plate-like structure, and multiple protrusions can be formed by stamping.
[0059] In one embodiment, reference is made to the appendix. Figure 4 As shown, the transmission component 2 is a swing arm, one end of which is movably connected to the bottom rear end of the return plate 1. In practical applications, the other end of the swing arm can be indirectly or directly connected to the drive component, so that it swings back and forth in the front and back direction under the drive component, thereby driving the return plate 1 to move back and forth in the front and back direction.
[0060] Specifically, one end of the swing arm is hinged to the bottom of the rear end of the return plate 1 via a hinge shaft.
[0061] In practical applications, in order to ensure the reliability of the swing of the return plate 1, the return device also includes a driven arm, one end of which is hinged to the return plate 1, and the other end is used to be hinged to the base or other support.
[0062] In one embodiment, reference is made to the appendix. Figure 1 To be continued Figure 3 As shown, the return disk 1 includes:
[0063] The return disk body forms a push section 11 and a grid section 12;
[0064] Two guide vanes 13 extend upward at an angle from the left and right sides of the return plate body, respectively.
[0065] In this way, under the guiding action of the two guide plates 13, it can be ensured that most of the impurities separated from the separation concave plate can fall into the return plate 1.
[0066] Specifically, the return plate body may include an outer frame, a push plate and a grid plate. The push plate and the grid plate are respectively installed in the outer frame and form the push section 11 and the grid section 12 respectively. Two guide plates 13 are fixedly connected to the outer frame.
[0067] This utility model also proposes a cleaning system.
[0068] In one embodiment, reference is made to the appendix. Figure 4 As shown, the cleaning system includes:
[0069] Separate concave plate 3, arranged along the front-to-back direction;
[0070] The cleaning screen 4 is arranged along the front-to-back direction and is positioned directly below the separation concave plate 3;
[0071] The aforementioned return device has a return plate 1 positioned between the separation concave plate 3 and the cleaning screen 4, and is arranged at an angle downwards from back to front.
[0072] The driving component (not shown in the figure) is connected to the transmission component 2 to drive the transmission component 2 to swing back and forth.
[0073] Specifically, the tilt angle of the return disc 1 in the initial position can be 3° to 15°, preferably 6°; the distance between the rear end of the return disc 1 in the initial position and the rear end of the separating concave plate 3 in the front-rear direction can be 0mm to 30mm, preferably 24mm; the distance between the rear end of the return disc 1 in the initial position and the rear end of the separating concave plate 3 in the vertical direction can be 100mm to 500mm, preferably 145mm; the distance between the front end of the return disc 1 in the initial position and the threshing concave plate 5 located in front of the separating concave plate 3 in the vertical direction can be 150mm to 600mm, preferably 200mm; the return disc 1 in the initial position... The distance between the front end of the return plate 1 and the vibrating plate 6 located in front of the cleaning screen 4 in the front-back direction can be 0mm to 200mm, preferably 100mm; the distance between the front end of the return plate 1 in the initial position and the vibrating plate 6 located in front of the cleaning screen 4 in the vertical direction can be 100mm to 500mm, preferably 169mm; the distance between the front end of the return plate 1 in the initial position and the front end of the cleaning screen 4 in the vertical direction can be 150mm to 700mm, preferably 287mm; the distance between the front end of the return plate 1 in the initial position and the front end of the cleaning screen 4 in the front-back direction can be 0mm to 250mm, preferably 143mm. Through the design of these angle and distance parameters, the rationality of the installation position of the return plate 1 in the cleaning system can be ensured, thereby ensuring the cleaning effect.
[0074] It should be noted that the method and structure of driving the transmission component 2 to swing back and forth to drive the return plate 1 to reciprocate in the front and back direction are well known to those skilled in the art and are not part of the core improvement of this utility model. Therefore, its specific structure and method will not be described in detail.
[0075] This utility model also proposes a combine harvester, which includes the aforementioned cleaning system. Clearly, this combine harvester also possesses the technical effects brought about by the aforementioned return-feeding device.
[0076] Specifically, the combine harvester can be a small to medium feed rate combine harvester.
[0077] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0078] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0080] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A loopback device, characterized by The returning device comprises: a returning disc (1) comprising a pushing section (11) and a grating section (12) arranged in sequence from back to front, the top surface of the pushing section (11) is provided with a plurality of protrusions arranged at intervals and biased forward, and the grating section (12) is provided with a plurality of through holes arranged at intervals and penetrating upward and downward; a transmission member (2) connected with the returning disc (1) and capable of swinging back and forth to drive the returning disc (1) to reciprocate in the front-back direction.
2. The loopback device of claim 1, wherein, The grating section (12) extends in a wave shape in the front-back direction and the protrusions are biased forward.
3. The loopback device of claim 1, wherein, The plurality of through holes are divided into multiple groups, and the multiple groups of through holes are arranged at intervals in the front-back direction, and the multiple through holes in each group are arranged at intervals in the left-right direction.
4. The loopback device of claim 3, wherein, The grating section (12) is a plate structure and forms the plurality of through holes by stamping.
5. The loopback device of claim 3, wherein, The grating section (12) is a steel wire mesh structure.
6. The loopback device of claim 1, wherein, The plurality of protrusions are arranged at intervals in the front-back direction, and the protrusions are in a strip shape extending in the left-right direction.
7. The loopback device of claim 1, wherein, The transmission member (2) is a swing arm, and one end of the swing arm is movably connected to the bottom of the rear end of the returning disc (1).
8. The loopback device of claim 1, wherein, The returning device comprises: a returning disc body forming the pushing section (11) and the grating section (12); two flow guide plates (13) respectively extending upward and backward from the left and right side edges of the returning disc body.
9. A cleaning system characterized in that, The cleaning system comprises: a separation concave plate (3) arranged in the front-back direction; a cleaning screen (4) arranged in the front-back direction and arranged directly below the separation concave plate (3); The returning device according to any one of claims 1 to 8, the returning disc (1) is arranged between the separation concave plate (3) and the cleaning screen (4) and is arranged downward and backward from back to front; a driving member drivingly connected with the transmission member (2) to drive the transmission member (2) to swing back and forth.
10. A combine harvester characterized by The combine harvester comprises the cleaning system according to claim 9. The combine harvester comprises the cleaning system according to claim 9.