A self-balancing cleaning screen and harvester

Abstract

This invention relates to the field of harvesters, specifically to a self-balancing cleaning screen and a harvester. The self-balancing cleaning screen includes a controller, a screen box body, and a self-balancing mechanism. The self-balancing mechanism includes a swing structure and a balance adjustment structure. The swing structure is located below the screen box body, and the balance adjustment structure is located at the rear end of the screen box body. The balance adjustment structure includes a drive base, a guide plate, a drive device, and a connecting rod. The drive device is located on the drive base and connected to the guide plate. The guide plate is connected to the screen box body via the connecting rod. The drive device is signal-connected to the controller. The beneficial effects of this invention are: by driving the guide plate through the drive device, the connecting rod and the screen box body rotate on the swing structure, achieving left-right swinging. Under the control of the controller, the screen box body swings according to the terrain traversed by the harvester, thereby avoiding the problem of screen tilt and improving the uniformity of screening.

Description

Technical Field

[0001] This invention relates to the field of harvesters, and more specifically, to a self-balancing cleaning screen and a harvester. Background Technology

[0002] With the development of paddy fields and cross-regional operations, the pursuit of operational efficiency has led various OEMs to increase the feeding capacity and operating speed of their tracked harvesters.

[0003] However, with increased operating speed, when harvesters are traversing uneven terrain such as slopes and ridges, the cleaning screens may tilt severely, affecting the uniformity of the screening. Summary of the Invention

[0004] The purpose of this invention is to provide a self-balancing cleaning screen and harvester that can solve the above-mentioned problems.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In a first aspect, the present invention provides a self-balancing cleaning screen, comprising a controller, a screen box body, and a self-balancing mechanism;

[0007] The self-balancing mechanism includes a rocking structure and a balance adjustment structure;

[0008] The swing structure is located below the screen box body, and the balance adjustment structure is located at the rear end of the screen box body;

[0009] The balance adjustment structure includes a drive base, a guide plate, a drive device, and a connecting rod;

[0010] The driving device is mounted on the driving base and is connected to the guide plate. The guide plate is connected to the screen box body through the connecting rod, enabling the screen box body to swing through the swing structure.

[0011] The drive device is signal-connected to the controller.

[0012] In an optional embodiment, an attitude sensor is provided on the screen box body, and the attitude sensor is signal-connected to the controller.

[0013] In an optional embodiment, the guide plate has a first connection position, a second connection position, and a third connection position;

[0014] The guide plate is rotatably connected to the drive seat through the first connection position, the guide plate is movably connected to the connecting rod through the second connection position, and the drive device is connected to the guide plate through the third connection position;

[0015] The first connection bit, the second connection bit, and the third connection bit are arranged in a triangle.

[0016] In an optional embodiment, the third connection position has a sliding groove, one end of the driving device is fixedly mounted on the driving base, and the other end of the driving device is slidably mounted in the sliding groove.

[0017] In an optional embodiment, the third connection position has a rotating hole, one end of the driving device is rotatably mounted on the driving base, and the other end of the driving device is rotatably connected to the guide plate through the rotating hole.

[0018] In an optional embodiment, the rocking structure includes a front axle structure and a rear axle structure;

[0019] The rear axle structure includes a first swing shaft, which is mounted on the drive seat. The screen box body is rotatably connected to the first swing shaft, and can swing left and right around the first swing shaft under the action of the balance adjustment structure.

[0020] The front shaft structure includes a second swing shaft, with both ends of the second swing shaft fixed, and the front end of the screen box body is rotatably mounted on the second swing shaft.

[0021] In an optional embodiment, the first swing axis includes a front swing axis and a rear swing axis;

[0022] One end of the front swing shaft is rotatably connected to the second swing shaft, and the front swing shaft can rotate about the axis of the second swing shaft;

[0023] The other end of the front swing shaft is rotatably connected to the screen box body, and the screen box body can rotate around the axis of the front swing shaft;

[0024] The two ends of the rear swing shaft are respectively connected to the drive seat and the screen box body.

[0025] Secondly, the present invention provides a harvester including a self-balancing cleaning screen as described in any of the foregoing embodiments.

[0026] In an optional embodiment, a flow guiding and distributing device is also included, which is disposed on the thresher drum.

[0027] In an optional embodiment, the flow distribution device includes an eccentric disk, a pushing part, a flow guide plate, a driving position, and a swinging position;

[0028] The eccentric disk rotation is connected to the drive position rotation, and the pushing part is disposed on the eccentric disk;

[0029] One end of the guide plate is rotatably connected to the swing position, and the other end of the guide plate abuts against the pushing part, so that it can swing under the action of the pushing part.

[0030] The beneficial effects of the embodiments of the present invention are:

[0031] The drive device drives the guide plate, which in turn drives the connecting rod and the screen box body to rotate on the swing structure, achieving left and right swing. Under the control of the controller, the screen box body swings according to the terrain passed by the harvester, thereby avoiding the problem of the cleaning screen tilting and improving the uniformity of screening. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, 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 the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A three-dimensional structural diagram of a cleaning screen provided in an embodiment of the present invention from a first perspective;

[0034] Figure 2 A side view of a cleaning sieve provided in an embodiment of the present invention;

[0035] Figure 3 A three-dimensional structural diagram of the cleaning screen provided in an embodiment of the present invention from a second perspective;

[0036] Figure 4 , Figure 5 and Figure 6 A schematic diagram of the swinging process of the guide plate in a first embodiment of the balance adjustment structure provided by the present invention;

[0037] Figure 7 , Figure 8 and Figure 9 A schematic diagram of the swinging process of the guide plate in a second embodiment of the balance adjustment structure provided in this invention;

[0038] Figure 10 This is a schematic diagram of the structure of a harvester provided in an embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the flow distribution device for a harvester provided in an embodiment of the present invention;

[0040] Figure 12 , Figure 13 and Figure 14The diagram shows the usage process of the flow distribution device for the harvester provided in this embodiment of the invention.

[0041] Icons: 1-Screen box body; 2-Drive base; 3-Eccentric wheel; 4-Eccentric shaft; 5-Rear swing shaft; 6-Front swing shaft; 7-Second swing shaft; 8-Drive device; 9-Guide plate; 10-Connecting rod; 11-First connection position; 12-Second connection position; 13-Sliding groove; 14-Third connection position; 15-Self-balancing cleaning screen; 16-Drum; 17-Eccentric disc; 18-Guide plate; 19-Pushing part; 20-Swing position; 21-Drive position. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0049] In a first aspect, the present invention provides a self-balancing cleaning sieve, such as... Figure 1 , Figure 2 and Figure 3 As shown, the device includes a controller, a screen box body 1, and a self-balancing mechanism. The self-balancing mechanism includes a swing structure and a balance adjustment structure. The swing structure is located below the screen box body 1, and the balance adjustment structure is located at the rear end of the screen box body 1. The balance adjustment structure includes a drive base 2, a guide plate 9, a drive device 8, and a connecting rod 10. The drive device 8 is located on the drive base 2 and is connected to the guide plate 9. The guide plate 9 is connected to the screen box body 1 through the connecting rod 10, enabling the screen box body 1 to swing through the swing structure. The drive device 8 is signal-connected to the controller.

[0050] In this embodiment, the swing structure includes a front shaft structure and a rear shaft structure; the rear shaft structure includes a first swing shaft, which is mounted on the drive seat 2, and the screen box body 1 is rotatably connected to the first swing shaft, so that the screen box body 1 can swing left and right around the first swing shaft under the action of the balance adjustment structure; the front shaft structure includes a second swing shaft 7, the two ends of the second swing shaft 7 are fixed, and the front end of the screen box body 1 is rotatably mounted on the second swing shaft 7.

[0051] Specifically, in this embodiment, the swing structure also includes an eccentric drive mechanism. The drive seat 2 is mounted on the eccentric drive mechanism and can swing back and forth and up and down under the action of the eccentric drive mechanism, thereby driving the screen box body 1 to rotate around the second swing axis 7. When going uphill or downhill, the height of the rear end of the screen box body 1 can be adjusted, thereby realizing the swing adjustment in the back and forth direction and ensuring the uniformity of the cleaning screen 15 in the back and forth direction during screening.

[0052] Specifically, the eccentric drive mechanism includes an eccentric shaft 4 and an eccentric wheel 3. The drive seat 2 is mounted on the eccentric wheel 3, and the eccentric wheel 3 is rotatably mounted on the eccentric shaft 4. The power device drives the eccentric wheel 3 to rotate on the eccentric shaft 4, which can drive the drive seat 2 to swing back and forth and up and down.

[0053] In this embodiment, the first swing shaft includes a front swing shaft 6 and a rear swing shaft 5; one end of the front swing shaft 6 is rotatably connected to the second swing shaft 7, and the front swing shaft 6 can rotate around the axis of the second swing shaft 7; the other end of the front swing shaft 6 is rotatably connected to the screen box body 1, and the screen box body 1 can rotate around the axis of the front swing shaft 6; the two ends of the rear swing shaft 5 are respectively connected to the drive seat 2 and the screen box body 1.

[0054] Specifically, the first swing shaft is divided into two parts, namely the front swing shaft 6 and the rear swing shaft 5. The front swing shaft 6 is located in front of the screen box body 1, and the rear swing shaft 5 is located behind the screen box body 1. The front swing shaft 6 and the rear swing shaft 5 are coaxially arranged, and the axis is in the front-back direction of the screen box body 1, which enables the screen box body 1 to rotate around the front swing shaft 6 and the rear swing shaft 5, thereby realizing the left-right swing adjustment of the screen box body 1.

[0055] In an optional embodiment, an attitude sensor is provided on the screen box body 1, and the attitude sensor is connected to the controller signal.

[0056] In this embodiment, the attitude of the screen box body 1 is detected by an attitude sensor, and the eccentric drive mechanism and balance adjustment structure are controlled by a controller to achieve automatic adjustment of the screen box body 1, so that the screen box body 1 is kept in a horizontal state, thereby ensuring the uniformity of screening.

[0057] In an optional embodiment, the guide plate 9 has a first connecting position 11, a second connecting position 12, and a third connecting position 14; the guide plate 9 is rotatably connected to the drive seat 2 through the first connecting position 11, the guide plate 9 is movably connected to the connecting rod 10 through the second connecting position 12, and the drive device 8 is connected to the guide plate 9 through the third connecting position 14; the first connecting position 11, the second connecting position 12, and the third connecting position 14 are arranged in a triangle.

[0058] In this embodiment, the guide plate 9 is configured as a triangle, and the first connecting position 11, the second connecting position 12 and the third connecting position 14 are respectively located at the three corners of the triangular guide plate 9.

[0059] Specifically, in this embodiment, the first connecting position 11 is rotatably connected to the drive seat 2, and the second connecting position 12 is movably connected to the connecting rod 10, allowing it to swing in any direction with the connecting rod 10. Thus, under the action of the drive device 8, the guide plate 9 rotates around the first connecting position 11, causing the connecting rod 10 connected to the second connecting position 12 to move, and finally causing the screen box body 1 connected to the connecting rod 10 to swing, thereby realizing the adjustment of the screen box body 1 in the left and right directions.

[0060] More specifically, in this embodiment, the rotational connection between the first connecting position 11 of the guide plate 9 and the drive seat 2 is a pin connection, and the connecting rod 10 is hinged to the screen box body 1.

[0061] It should be noted that the rotating connection method can be a pin connection, but it is not limited to pin connection as the only connection method. As long as a rotating connection can be achieved, it is acceptable.

[0062] It should also be noted that the connection between the connecting rod 10 and the screen box body 1 can be hinged, but it is not limited to hinged connection. It can also be other movable connection methods, such as ball connection, as long as it can swing freely, thereby driving the screen box body 1 to swing around the first swing axis.

[0063] In this embodiment, the drive device 8 is a cylinder, a hydraulic cylinder, or a stepper motor.

[0064] In this embodiment, there are many ways to set the third connection bit 14.

[0065] Specifically, in optional implementations, such as Figure 4 , Figure 5 and Figure 6 As shown, the third connection position 14 has a sliding groove 13. One end of the driving device 8 is fixedly mounted on the driving base 2, and the other end of the driving device 8 is slidably mounted in the sliding groove 13.

[0066] Specifically, in this embodiment, the sliding groove 13 is provided so that the guide plate 9 can rotate around the first connection position 11 under the action of the driving device 8, and will not be affected by the position of the driving device 8.

[0067] More specifically, in this embodiment, the sliding groove 13 can be as follows: Figures 4 to 6 The long groove in the vertical direction can also be set as an arc-shaped groove, as long as it can drive the guide plate 9 to rotate around the first connecting position 11 under the action of the driving device 8.

[0068] In alternative implementations, such as Figure 7 , Figure 8 and Figure 9As shown, the third connection position 14 has a rotating hole, one end of the driving device 8 is rotatably mounted on the driving base 2, and the other end of the driving device 8 is rotatably connected to the guide plate 9 through the rotating hole.

[0069] Specifically, in this embodiment, the driving device 8 is rotatably connected to the driving base 2, so that when the driving guide plate 9 rotates, the driving device 8 rotates simultaneously, thereby avoiding the restriction of the guide plate 9 by the driving device 8 and ensuring that the guide plate 9 can rotate normally.

[0070] It is understandable that the connection between the drive device 8 and the guide plate 9 can be one of the above-mentioned methods, but it is not limited to the above-mentioned methods. It can also be other connection methods, such as the drive device 8 and the guide plate 9 being in contact, which can drive the rotation of the guide plate 9 without limiting the guide plate 9, thus ensuring that the guide plate 9 can rotate normally.

[0071] Secondly, the present invention provides a harvester, such as Figure 10 As shown, a self-balancing cleaning sieve 15 includes any of the aforementioned embodiments.

[0072] In alternative implementations, such as Figure 11 As shown, it also includes a flow guiding and distribution device, which is installed on the thresher drum 16.

[0073] The thresher drum 16 rotates to send grain particles out of the drum 16 and into the cleaning screen 15. Because the input position is fixed, it is easy to cause unevenness during cleaning.

[0074] In this embodiment, a flow guiding and distribution device is provided at the discharge port of the drum 16 so that the grain particles are diverted before entering the cleaning screen 15, making the grain particles in the cleaning screen 15 relatively uniform.

[0075] In an optional embodiment, the flow distribution device includes an eccentric disk 17, a pushing part 19, a flow guide plate 18, a driving position 21, and a swing position 20; the eccentric disk 17 is rotatably connected to the driving position 21, and the pushing part 19 is disposed on the eccentric disk 17; one end of the flow guide plate 18 is rotatably connected to the swing position 20, and the other end of the flow guide plate 18 abuts against the pushing part 19, and can swing under the action of the pushing part 19.

[0076] In this embodiment, there are two guide plates 18, which are set in a herringbone shape and are rotatably mounted on the swing position 20.

[0077] The swing position 20 is fixed on the main frame of the harvester or fixedly set below the drum 16, so that when the grain particles are output from the drum 16, they can fall on the guide plate 18 and be dispersed.

[0078] In this embodiment, the drive position 21 is fixed to the main frame of the harvester. The power unit of the drive position 21 drives the eccentric disk 17 to rotate, thereby causing the pushing part 19 on the eccentric disk 17 to rotate around the drive position 21. Figure 12 , Figure 13 and Figure 14 As shown, the two guide plates 18 arranged in a herringbone shape are respectively arranged on both sides of the pusher 19. When the pusher 19 rotates around the drive position 21, it can repeatedly push the two guide plates 18, thereby causing the guide plates 18 to swing, making the grain particles more uniform when entering the cleaning screen 15.

[0079] It should be understood that the deflector 18 can be configured in a herringbone shape, or it can be a single deflector 18 or other configuration methods.

[0080] The beneficial effects of the embodiments of the present invention are:

[0081] The drive device 8 drives the guide plate 9, which in turn drives the connecting rod 10 and the screen box body 1 to rotate on the swing structure, thus achieving left and right swing. Under the control of the controller, the screen box body 1 swings according to the terrain passed by the harvester, thereby avoiding the problem of tilting of the cleaning screen 15 and improving the uniformity of screening.

[0082] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A self-balancing cleaning sieve, characterized in that, Includes a controller, screen box body, and self-balancing mechanism; The self-balancing mechanism includes a rocking structure and a balance adjustment structure; The swing structure is located below the screen box body, and the balance adjustment structure is located at the rear end of the screen box body; The balance adjustment structure includes a drive base, a guide plate, a drive device, and a connecting rod; The driving device is mounted on the driving base and connected to the guide plate. The guide plate is connected to the screen box body through the connecting rod, enabling the screen box body to swing through the swing structure. The drive device is signal-connected to the controller; The guide plate has a first connection position, a second connection position, and a third connection position; The guide plate is rotatably connected to the drive seat through the first connection position, the guide plate is movably connected to the connecting rod through the second connection position, and the drive device is connected to the guide plate through the third connection position; The first connection bit, the second connection bit, and the third connection bit are arranged in a triangle; The swing structure includes a front axle structure and a rear axle structure; The rear axle structure includes a first swing shaft, which is mounted on the drive seat. The screen box body is rotatably connected to the first swing shaft, and can swing left and right around the first swing shaft under the action of the balance adjustment structure. The front shaft structure includes a second swing shaft, with both ends of the second swing shaft fixed, and the front end of the screen box body is rotatably mounted on the second swing shaft; The first swing axis includes a front swing axis and a rear swing axis; One end of the front swing shaft is rotatably connected to the second swing shaft, and the front swing shaft can rotate about the axis of the second swing shaft; The other end of the front swing shaft is rotatably connected to the screen box body, and the screen box body can rotate around the axis of the front swing shaft; The two ends of the rear swing shaft are respectively connected to the drive seat and the screen box body.

2. The self-balancing cleaning screen according to claim 1, characterized in that, An attitude sensor is installed on the screen box body, and the attitude sensor is connected to the controller via signal.

3. The self-balancing cleaning screen according to claim 1, characterized in that, The third connection position has a sliding groove, one end of the driving device is fixedly mounted on the driving base, and the other end of the driving device is slidably mounted in the sliding groove.

4. The self-balancing cleaning screen according to claim 1, characterized in that, The third connection position has a rotating hole. One end of the driving device is rotatably mounted on the driving base, and the other end of the driving device is rotatably connected to the guide plate through the rotating hole.

5. A harvester, characterized in that, Includes the self-balancing cleaning screen as described in any one of claims 1-4.

6. The harvester according to claim 5, characterized in that, It also includes a flow guiding and distribution device, which is installed on the thresher drum.

7. The harvester according to claim 6, characterized in that, The flow distribution device includes an eccentric disk, a pushing part, a flow guide plate, a driving position, and a swinging position; The eccentric disk rotation is connected to the drive position rotation, and the push part is disposed on the eccentric disk; One end of the guide plate is rotatably connected to the swing position, and the other end of the guide plate abuts against the pushing part, so that it can swing under the action of the pushing part.

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