Self-balancing cleaning sieve and harvester

Abstract

The utility model relates to the field of harvesters, in particular to a self-balancing cleaning sieve and a harvester. The self-balancing cleaning sieve comprises a controller, a sieve box body and a self-balancing mechanism. The self-balancing mechanism comprises a swinging structure and a balance adjusting structure; the swing structure is arranged below the screen box body. The balance adjusting structure is arranged at the rear end of the screen box body. The balance adjusting structure comprises a driving seat, a guide plate, a driving device and a connecting rod; the driving device is arranged on the driving seat and connected with the guide plate, and the guide plate is connected with the screen box body through a connecting rod; and the driving device is in signal connection with the controller. The cleaning screen has the advantages that the guide plate is driven by the driving device, the connecting rod and the screen box body are further driven to rotate on the swing structure, left-right swing is achieved, the screen box body swings under the action of the controller according to the terrain where the harvester passes, and therefore the problem that the cleaning screen inclines is solved, and the service life of the cleaning screen is prolonged. And the screening uniformity is improved.

Description

Technical Field

[0001] The utility model relates to the field of harvesters, in particular to a self-balancing cleaning screen and a harvester. Background Art

[0002] With the existence of paddy field leveling and cross-regional operation flow, the pursuit of operation efficiency has led to the improvement of the feeding volume and operation speed of crawler harvesters of various main manufacturers.

[0003] However, when the operating speed is increased, the cleaning screen will be seriously tilted when the harvester is harvesting on uneven land such as slopes and ridges, thus affecting the uniformity of the screening. Utility Model Content

[0004] The purpose of the utility model is to provide a self-balancing cleaning screen and a harvester, which can solve the above problems.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model 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 swing structure and a balance adjustment structure;

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

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

[0010] The driving device is arranged on the driving seat, the driving device is connected to the guide plate, the guide plate is connected to the screen box body through the connecting rod, and can drive the screen box body to swing through the swing structure;

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

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

[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 via the first connection position, the guide plate is movably connected to the connecting rod via the second connection position, and the drive device is connected to the guide plate via the third connection position;

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

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

[0017] In an optional embodiment, the third connection position has a rotation hole, one end of the driving device is rotatably disposed on the driving seat, and the other end of the driving device is rotatably connected to the guide plate through the rotation 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 arranged on the driving seat, and the screen box body is rotatably connected to the first swing shaft, so that the screen box body can swing left and right around the first swing shaft under the action of the balance adjustment structure;

[0020] The front axle structure comprises a second swinging shaft, both ends of which are fixed, and the front end of the screen box body is rotatably arranged on the second swinging 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 around 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 driving seat and the screen box body.

[0025] In a second aspect, the utility model provides a harvester comprising the self-balancing cleaning screen as described in any one of the aforementioned embodiments.

[0026] In an optional embodiment, a flow diversion and uniform distribution device is further included, and the flow diversion and uniform distribution device is arranged on the thresher drum.

[0027] In an optional embodiment, the flow diversion and distribution device includes an eccentric disk, a pusher, a guide plate, a driving position, and a swing position;

[0028] The eccentric disk is rotationally connected to the driving position, and the pushing part is arranged on the eccentric disk;

[0029] One end of the guide plate is rotatably connected to the swinging portion, and the other end of the guide plate is in contact with the pushing portion, so that the guide plate can swing under the action of the pushing portion.

[0030] The beneficial effects of the embodiments of the utility model are:

[0031] The guide plate is driven by the driving device, which further drives the connecting rod and the screen box body to rotate on the swing structure to achieve left and right swing. Under the action of the controller, the screen box body is swung according to the terrain passed by the harvester, thereby avoiding the problem of tilting of the cleaning screen and improving the uniformity of screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the three-dimensional structure of a cleaning screen provided by an embodiment of the utility model from a first viewing angle;

[0034] Figure 2 A side view of a cleaning screen provided in an embodiment of the utility model;

[0035] Figure 3 A schematic diagram of the three-dimensional structure of the cleaning screen provided by the embodiment of the utility model from a second viewing angle;

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

[0037] Figure 7 , Figure 8 and Fig. 9 A schematic diagram of the swinging process of the guide plate in the second embodiment of the balance adjustment structure provided by the embodiment of the utility model;

[0038] Fig.10 A schematic diagram of the structure of a harvester provided by an embodiment of the utility model;

[0039] Fig.11 A schematic diagram of the structure of a flow diversion and uniform distribution device for a harvester provided by an embodiment of the utility model;

[0040] Fig.12 , Fig.13 and Fig.14A reference diagram of the use process of the flow diversion and uniform distribution device of the harvester provided in an embodiment of the utility model.

[0041] Icons: 1-screen box body; 2-driving seat; 3-eccentric wheel; 4-eccentric shaft; 5-rear swing shaft; 6-front swing shaft; 7-second swing shaft; 8-driving device; 9-guide plate; 10-connecting rod; 11-first connecting position; 12-second connecting position; 13-sliding groove; 14-third connecting position; 15-self-balancing cleaning screen; 16-drum; 17-eccentric disk; 18-guide plate; 19-pushing part; 20-swing position; 21-driving position. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0049] In a first aspect, the utility model provides a self-balancing cleaning screen, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a controller, a screen box body 1 and a self-balancing mechanism; the self-balancing mechanism includes a swinging structure and a balancing adjustment structure; the swinging structure is arranged below the screen box body 1, and the balancing adjustment structure is arranged at the rear end of the screen box body 1; the balancing adjustment structure includes a driving seat 2, a guide plate 9, a driving device 8 and a connecting rod 10; the driving device 8 is arranged on the driving seat 2, the driving device 8 is connected to the guide plate 9, and the guide plate 9 is connected to the screen box body 1 through the connecting rod 10, and can swing when driving the screen box body 1 through the swinging structure; the driving device 8 is connected to the controller signal.

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

[0051] Specifically, in the present embodiment, the swinging structure also includes an eccentric driving mechanism. The driving seat 2 is arranged on the eccentric driving mechanism and can swing forward and backward and upward and downward under the action of the eccentric driving mechanism, thereby driving the screen box body 1 to rotate around the second swinging axis 7. The height of the rear end of the screen box body 1 can be adjusted when going uphill or downhill, thereby realizing the forward and backward swing adjustment, thereby ensuring the uniformity of the cleaning screen 15 in the forward and backward directions during screening.

[0052] Specifically, the eccentric driving mechanism includes an eccentric shaft 4 and an eccentric wheel 3. The driving seat 2 is arranged on the eccentric wheel 3. The eccentric wheel 3 is rotatably arranged on the eccentric shaft 4. The power device drives the eccentric wheel 3 to rotate on the eccentric shaft 4, which can drive the driving seat 2 to swing forward and backward 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 a front swing shaft 6 and a rear swing shaft 5. The front swing shaft 6 is arranged in front of the screen box body 1, and the rear swing shaft 5 is arranged behind the screen box body 1. The front swing shaft 6 and the rear swing shaft 5 are coaxially arranged, and the axis is the front and rear direction of the screen box body 1. The screen box body 1 can be rotated around the front swing shaft 6 and the rear swing shaft 5 to realize the left and right swing adjustment of the screen box body 1.

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

[0056] In this embodiment, the posture of the screen box body 1 is detected by a posture sensor, and the eccentric drive mechanism and the 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 remains in a horizontal state, thereby ensuring the uniformity of screening.

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

[0058] In this embodiment, the guide plate 9 is arranged in a triangle shape, and the first connection position 11 , the second connection position 12 and the third connection position 14 are arranged at three corner positions of the triangular guide plate 9 , respectively.

[0059] Specifically, in the present embodiment, the first connection position 11 is rotationally connected to the driving seat 2, and the second connection position 12 is movably connected to the connecting rod 10, and can swing in any direction with the connecting rod 10. Thus, under the action of the driving device 8, the guide plate 9 rotates around the first connection position 11, driving the connecting rod 10 connected to the second connection position 12 to move, and finally driving the screen box body 1 connected to the connecting rod 10 to swing, thereby realizing the left-right adjustment of the screen box body 1.

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

[0061] It should be pointed out that the rotational connection method can be a pin connection, but it is not limited to the pin connection method, as long as the rotational connection can be achieved.

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

[0063] In this embodiment, the driving device 8 is an air cylinder, an oil cylinder or a stepping motor.

[0064] In this embodiment, the third connection position 14 can be configured in many ways.

[0065] Specifically, in an optional embodiment, 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 arranged on the driving seat 2 , and the other end of the driving device 8 is slidably arranged in the sliding groove 13 .

[0066] Specifically, in the present embodiment, the setting of the sliding groove 13 enables the guide plate 9 to 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 may be as follows: Figures 4 to 6 The vertically long groove may also be an arc-shaped groove, as long as it can drive the guide plate 9 to rotate around the first connection position 11 under the action of the driving device 8.

[0068] In an optional embodiment, if Figure 7 , Figure 8 and Fig. 9As shown, the third connection position 14 has a rotation hole, one end of the driving device 8 is rotatably disposed on the driving seat 2, and the other end of the driving device 8 is rotatably connected to the guide plate 9 through the rotation hole.

[0069] Specifically, in this embodiment, the driving device 8 is rotatably connected to the driving seat 2, so that when the driving guide plate 9 is rotated, the driving device 8 can rotate at the same time, thereby avoiding the restriction of the driving device 8 on the guide plate 9 and ensuring that the guide plate 9 can rotate normally.

[0070] It can be understood that the connection method between the driving device 8 and the guide plate 9 can be the above-mentioned methods, but it is not limited to the above-mentioned methods. It can also be other connection methods. For example, the driving device 8 and the guide plate 9 can be abutted against each other, which can not only drive the rotation of the guide plate 9 but also will not limit the guide plate 9, thereby ensuring that the guide plate 9 can rotate normally.

[0071] In a second aspect, the utility model provides a harvester, such as Fig.10 As shown, the self-balancing cleaning screen 15 includes any one of the aforementioned embodiments.

[0072] In an optional embodiment, if Fig.11 As shown, it also includes a flow diversion and distribution device, which is arranged 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. Since the input position is fixed, it is easy to cause unevenness during cleaning.

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

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

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

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

[0078] In this embodiment, the driving position 21 is fixed on the main frame of the harvester, and the power device of the driving position 21 drives the eccentric disk 17 to rotate, thereby driving the pushing part 19 on the eccentric disk 17 to rotate around the driving position 21. Fig.12 , Fig.13 and Fig.14 As shown, the two guide plates 18 arranged in a herringbone shape are respectively arranged on both sides of the pushing part 19. When the pushing part 19 rotates around the driving position 21, the two guide plates 18 can be repeatedly pushed, so that the guide plates 18 swing, so that the grain particles are more uniform when entering the cleaning screen 15.

[0079] It should be understood that the guide plate 18 can be arranged in a herringbone shape, or it can be arranged in a single guide plate 18 or in other arrangements.

[0080] The beneficial effects of the embodiments of the utility model are:

[0081] The guide plate 9 is driven by the driving device 8, which further drives the connecting rod 10 and the screen box body 1 to rotate on the swing structure to achieve left and right swing. Under the action of the controller, the screen box body 1 is swung 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 only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-balancing cleaning screen, characterized in that: It 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 arranged below the screen box body, and the balance adjustment structure is arranged at the rear end of the screen box body; The balance adjustment structure includes a driving seat, a guide plate, a driving device and a connecting rod; The driving device is arranged on the driving seat, the driving device is connected to the guide plate, the guide plate is connected to the screen box body through the connecting rod, and can drive the screen box body to swing through the swing structure; The driving device is signal-connected to the controller.

2. The self-balancing cleaning screen according to claim 1, characterized in that: The screen box body is provided with a posture sensor, and the posture sensor is connected with the controller signal.

3. The self-balancing cleaning screen according to claim 1, characterized in that: 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 via the first connection position, the guide plate is movably connected to the connecting rod via the second connection position, and the drive device is connected to the guide plate via the third connection position; The first connection position, the second connection position and the third connection position are arranged in a triangle.

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

5. The self-balancing cleaning screen according to claim 3, characterized in that: The third connection position has a rotation hole, one end of the driving device is rotatably arranged on the driving seat, and the other end of the driving device is rotatably connected to the guide plate through the rotation hole.

6. The self-balancing cleaning screen according to claim 1, characterized in that: The rocking structure includes a front axle structure and a rear axle structure; The rear axle structure includes a first swing shaft, which is arranged on the driving seat, and the screen box body is rotatably connected to the first swing shaft, so that the screen box body can swing left and right around the first swing shaft under the action of the balance adjustment structure; The front axle structure comprises a second swinging shaft, both ends of which are fixed, and the front end of the screen box body is rotatably arranged on the second swinging shaft.

7. The self-balancing cleaning screen according to claim 6, characterized in that: 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 around 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 driving seat and the screen box body.

8. A harvester, characterized in that: The invention comprises the self-balancing cleaning screen as described in any one of claims 1 to 7.

9. The harvester according to claim 8, characterized in that: It also comprises a flow diversion and uniform distribution device, which is arranged on the thresher drum.

10. The harvester according to claim 9, characterized in that: The flow guide and distribution device comprises an eccentric disk, a driving part, a flow guide plate, a driving position and a swinging position; The eccentric disk is rotationally connected to the driving position, and the pushing part is arranged on the eccentric disk; One end of the guide plate is rotatably connected to the swinging portion, and the other end of the guide plate is in contact with the pushing portion, so that the guide plate can swing under the action of the pushing portion.

Images