Threshing device and harvester

Abstract

The utility model provides a threshing device, including a threshing drum and a frame, wherein an upper cover is arranged above the threshing drum and fixed on the frame; a lower concave plate is arranged below the threshing drum, and is hinged on one side where the lower concave plate is connected to the upper cover plate; an adjusting mechanism is arranged below the lower concave plate, and is arranged on the other side where the lower concave plate is hinged to the upper cover plate. The adjusting mechanism includes an adjusting rod, which is rotatably arranged and arranged along the direction where the axis of the threshing drum is located; one end of a rocker arm is fixedly connected to the adjusting rod and rotates synchronously; one end of a connecting rod is hinged to the rocker arm, and the other end of the connecting rod is connected to the lower concave plate; a driving part is arranged below the adjusting rod to drive the adjusting rod to rotate, and the driving part is connected to the adjusting rod, and the rotation of the adjusting rod drives the rocker arm to rotate, and the rocker arm pulls the connecting rod to move up and down, thereby driving the opening and closing of the lower concave plate, and adjusting the gap between the lower concave plate and the threshing drum. The threshing device provided by the utility model has a simple structure and is easy to adjust the gap between the lower concave plate and the threshing drum.

Description

Technical Field

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

[0002] In the existing harvesting process, the principle of adjusting the threshing gap is to maximize the gap under the premise of threshing cleanly. If the threshing gap is adjusted too small, the crop flow rate through the threshing drum per unit time will be reduced, and the crop flow will be unsmooth, which will cause the threshing drum to be blocked; if the threshing gap is too large, the impact and throwing effect of the grain on the concave screen will decrease, and the threshing efficiency will deteriorate, that is, the threshing is not clean. When harvesting different crops and different maturity periods, in order to achieve a satisfactory threshing effect, the threshing concave of the harvester needs to be adjusted to adjust the threshing gap to achieve high-efficiency and high-quality grain harvesting.

[0003] In the prior art, the method for adjusting the threshing gap of the lower concave plate is to control the outlet gap and the inlet gap of the concave plate simultaneously through a joystick to achieve the gap adjustment of the threshing concave plate, and the joystick is generally arranged above the threshing cylinder. However, there are several problems with this method: first, the structure of the joystick or the manual pull rod in the cab is relatively expensive, has many parts, and is not easy to process. In addition, due to the existence of the cover plate arranged on the threshing cylinder, a set of independent transmission structures needs to be separately arranged to adjust the gap between the threshing concave plate and the threshing cylinder.

[0004] Therefore, it is necessary to provide a convenient threshing device to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide a threshing regulating device and a harvester, so as to solve the problems of high manufacturing cost, complicated machinery and difficult processing of the threshing device in the process of harvesting operation.

[0006] In order to solve the above technical problems, the utility model provides a threshing device, comprising a threshing drum, the threshing drum is used to complete the threshing process of crops; a frame, the threshing drum is fixed on the frame; an upper cover plate, the upper cover plate is arranged above the threshing drum and fixed on the frame; a lower concave plate, the lower concave plate is placed below the threshing drum, and the lower concave plate is hinged at one side where the connection between the lower concave plate and the upper cover plate is located;

[0007] An adjusting mechanism, the adjusting mechanism is placed below the lower concave plate and on the other side of the hinged connection between the lower concave plate and the upper cover plate, for adjusting the gap between the lower concave plate and the threshing drum; the adjusting mechanism comprises: an adjusting rod, the adjusting rod is rotatably arranged and arranged along the direction of the axis of the threshing drum; a rocker arm, one end of the rocker arm is fixedly connected to the adjusting rod and rotates synchronously, the rocker arm comprises a first rocker arm arranged at one end of the adjusting rod and a second rocker arm as for the other end of the adjusting rod; a connecting rod, one end of the connecting rod is hinged to the rocker arm, the other end of the connecting rod is connected to the lower concave plate, the connecting rod comprises a first connecting rod connected to the first rocker arm and a second connecting rod connected to the second rocker arm;

[0008] The driving part is placed under the adjusting rod to drive the adjusting rod to rotate. The driving part is connected to the adjusting rod. The rotation of the adjusting rod drives the rocker arm to rotate. The rocker arm pulls the connecting rod to move up and down, thereby driving the opening and closing of the lower concave plate to adjust the gap between the lower concave plate and the threshing drum.

[0009] By arranging an adjustment mechanism under the threshing drum, the gap between the lower concave plate and the threshing drum can be adjusted to adapt to the harvesting of grains of different types and different maturity levels.

[0010] Preferably, the driving part comprises an adjusting screw for adjusting the gap between the lower concave plate and the threshing drum and a slider connected to the adjusting screw, and the slider is connected to the adjusting rod through a third rocker arm;

[0011] When the adjusting screw rotates, the sliding block moves, and the third rocker arm is connected to the adjusting rod to adjust the gap between the lower concave plate and the threshing drum.

[0012] An adjusting screw is provided to adjust the gap between the threshing drum and the lower concave plate, and continuous adjustment of the gap between the threshing drum and the lower concave plate can be achieved through continuous rotation of the adjusting screw.

[0013] Preferably, a thread is provided at one end of the adjusting screw, the sliding block is fixed on the adjusting screw and moves following the adjusting screw, and one end of the adjusting screw provided with the thread is connected to a nut.

[0014] Preferably, the driving part includes a connecting plate, and the sliding block is connected to the third rocker arm via the connecting plate.

[0015] Preferably, the driving unit comprises an indicating device, which is connected to the slider and is used to display the adjustment gap between the lower concave plate and the threshing drum.

[0016] Preferably, the driving part includes a mounting seat and a baffle, the mounting seat is connected to the adjusting screw, and the slider moves in the mounting seat; the mounting seat is fixed to the frame, and the baffle is used to assist the adjustment of the adjusting screw.

[0017] Preferably, when the driving portion is disposed at one end of the adjusting rod, the second rocker arm and the third rocker arm are integrally connected.

[0018] Preferably, one end of the adjusting rod is connected to the frame, the adjusting rod and the frame are fixed via a connecting seat, and the adjusting rod rotates in the connecting seat.

[0019] Preferably, the first connecting rod includes a first pull plate and a first screw rod, the first screw rod is connected to the first pull plate, one end of the first screw rod is connected to the first rocker arm, and the first pull plate is connected to the lower concave plate.

[0020] By setting the adjustment mechanism under the threshing drum, the gap between the lower concave plate and the threshing drum can be adjusted, thereby adapting to the harvesting scenes of grains of different varieties and different maturity. This threshing device has a simple structure, can reduce manufacturing costs, is easy to achieve continuous adjustment of the gap between the lower concave plate and the threshing drum, and can intuitively see the size of the adjustment gap between the lower concave plate and the threshing drum, which is convenient for harvesting workers to operate.

[0021] The utility model also provides a harvester, comprising any one of the above threshing devices.

[0022] The harvester equipped with the above threshing device can adjust the gap between the lower concave plate and the threshing drum without the driver opening the upper cover, and the adjustment mechanism has a simple structure and is easy to operate. During operation, the harvester can adapt to harvesting operations of crops of different types and different degrees of maturity, and can significantly improve the operating efficiency and quality of the harvester. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0024] Figure 1 A stereoscopic view of a threshing device provided in this embodiment.

[0025] Figure 2 A schematic diagram of the structure of an adjustment mechanism provided in this embodiment.

[0026] Figure 3 for Figure 2 A schematic diagram of part A in the implementation scheme provided.

[0027] Figure 4 An exploded view of a driving unit provided in this embodiment.

[0028] Figure 5 This is a cross-sectional schematic diagram along the AA' direction provided in this embodiment.

[0029] Explanation of the accompanying drawings: 100-threshing device; 1-threshing drum; 2-frame; 3-upper cover; 4-lower concave plate; 5-adjusting mechanism; 51-adjusting rod; 511-connecting seat; 52-rocker arm; 521-first rocker arm; 522-second rocker arm; 53-connecting rod; 531-first connecting rod; 5311-first pull plate; 5312-first screw rod; 532-second connecting rod; 54-driving part; 541-adjusting screw; 542-slider; 543-third rocker arm; 544-connecting plate; 545-nut; 546-indicating device; 547-mounting seat; 548-baffle. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0032] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0033] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 this utility model can be understood according to specific circumstances.

[0034] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0036] See also Figures 1 to 5 As shown, the embodiment of the utility model provides a threshing device 100, including: a threshing drum 1, the threshing drum 1 is used to complete the threshing process of crops; a frame 2, the threshing drum 1 is fixed on the frame 2; an upper cover plate 3, the upper cover plate 3 is arranged above the threshing drum 1 and fixed on the frame 2; a lower concave plate 4, the lower concave plate 4 is placed below the threshing drum 1, and the lower concave plate 4 is hinged on one side of the connection between the lower concave plate 4 and the upper cover plate 3; an adjusting mechanism 5, the adjusting mechanism 5 is placed below the lower concave plate 4 and on the other side of the hinged connection between the lower concave plate 4 and the upper cover plate 3, and is used to adjust the gap between the lower concave plate 4 and the threshing drum 1;

[0037] The regulating mechanism 5 comprises:

[0038] An adjusting rod 51, the adjusting rod 51 is rotatably arranged and arranged along the direction where the axis of the threshing drum 1 is located; a rocker arm 52, one end of the rocker arm 52 is fixedly connected to the adjusting rod 51 and rotates synchronously, the rocker arm 52 includes a first rocker arm 521 disposed at one end of the adjusting rod 51 and a second rocker arm 522 at the other end of the adjusting rod 51; a connecting rod 53, one end of the connecting rod 53 is hinged to the rocker arm 52, the other end of the connecting rod 53 is connected to the lower concave plate 4, the connecting rod 53 includes a first connecting rod 531 connected to the first rocker arm 521 and a second connecting rod 532 connected to the second rocker arm 522;

[0039] The driving part 54 is placed under the adjusting rod 51 to drive the adjusting rod 51 to rotate. The driving part 54 is connected to the adjusting rod 51. The rotation of the adjusting rod 51 drives the rocking arm 52 to rotate. The rocking arm 52 pulls the connecting rod 53 to move up and down, thereby driving the opening and closing of the lower concave plate 4 to adjust the gap between the threshing drum 1.

[0040] Specifically, during the grain harvesting process, the threshing device 100 is used to complete the threshing of the grain. The threshing device 100 generally includes the following structure: a threshing drum 1 connected to the frame 2, an upper cover plate 3 arranged above the threshing drum 1, and a lower concave plate 4 hinged to the upper cover plate 3, and the upper cover plate 3 is used to prevent grain splashing during the harvesting and threshing process. In order to adapt to grain harvesting, an adjustment mechanism 5 is provided to adjust the gap between the lower concave plate 4 and the threshing drum 1 to efficiently achieve grain threshing. The adjustment mechanism 5 provided in this embodiment is arranged below the lower concave plate 4, and the position of the adjustment mechanism 5 should be placed on the other side of the side where the lower concave plate 4 and the upper cover plate 3 are hinged, that is, it can be understood as the symmetrical position of the lower concave plate 4 and the upper cover plate 3 hinged side in the threshing device 100. When the adjustment mechanism 5 is arranged here, it is convenient for the driver to operate. The adjusting mechanism 5 comprises: an adjusting rod 51 for realizing the linkage of the adjusting mechanism 5 , a rocker arm 52 connected to the adjusting rod 51 , a rocker bar 53 connected to the lower concave plate 4 , and a driving part 54 for driving the adjusting rod 51 to rotate.

[0041] It should be noted that the driving unit 54 provided here can be driven by a motor, a mechanical structure, a hydraulic pressure and other devices to realize the driving of the adjusting mechanism 5, which will not be described one by one here. In this embodiment, the clearance between the lower concave plate 4 and the threshing drum 1 is mainly driven by a mechanical structure to open and close the lower concave plate 4 and the threshing drum 1 to realize the adjustment of the gap between the lower concave plate 4 and the threshing drum 1.

[0042] The driving unit 54 outputs power to the adjusting rod 51. At this time, the first rocker arm 521 and the second rocker arm 522 arranged at both ends of the adjusting rod 51 respectively follow the rotation direction of the adjusting rod 51, and the first connecting rod 531 and the second connecting rod 532 respectively connected to the first rocker arm 521 and the second rocker arm 522 pull the lower concave plate 4 to open and close, thereby realizing the gap adjustment between the lower concave plate 4 and the threshing drum 1.

[0043] This threshing device 100 changes the previous method of adjusting the gap between the lower concave plate 4 and the threshing drum 1 by a joystick, and adopts a form in which the adjustment mechanism 5 is arranged below the threshing drum 1, so that the gap between the lower concave plate 4 and the threshing drum 1 can be adjusted from the outside of the harvester, which is convenient for the driver to operate. In addition, this adjustment mechanism 5 has a simple structure, is easy to process, and can improve manufacturing efficiency.

[0044] Preferably, the driving part 54 includes an adjusting screw 541 for adjusting the gap between the lower concave plate 4 and the threshing drum 1 and a slider 542 connected to the adjusting screw 541, and the slider 542 is connected to the adjusting rod 51 through a third rocker arm 543;

[0045] When the adjusting screw 541 rotates, the slider 542 moves, and the third rocker arm 543 is connected to the adjusting rod 51 to adjust the gap between the lower concave plate 4 and the threshing drum 1 .

[0046] In this embodiment, the driving part 54 realizes the gap adjustment between the lower concave plate 4 and the threshing drum 1 by setting an adjusting screw 541. Specifically, the adjusting screw 541 rotates to drive the slider 542 connected to the adjusting screw 541 to move along the rotation direction of the adjusting screw 541. For example, when the adjusting screw 541 rotates along the setting direction of the threshing device 100, the slider 542 also moves in the setting direction of the threshing device 100. At this time, the third rocker arm 543 connecting the adjusting rod 51 and the slider 542 moves, and then drives the adjusting rod 51 to rotate. The adjusting screw 541 is used to adjust the adjustment rod 51, which has a simple structure and is easy to operate. At the same time, the gap between the lower concave plate 4 and the threshing drum 1 is adjusted by the adjusting screw 541. The gap between the lower concave plate 4 and the threshing drum 1 is continuous, that is, the opening and closing angle between the lower concave plate 4 and the threshing drum 1 is continuous, while the prior art uses a joystick to preset the gear position for the opening and closing angle between the lower concave plate 4 and the threshing drum 1, so it does not have continuity.

[0047] Preferably, a thread is provided at one end of the adjusting screw 541, and the slider 542 is fixed on the adjusting screw 541 and moves with the adjusting screw 541, and one end of the adjusting screw 541 with a thread is connected to the nut 545. When the adjusting screw 541 is rotated to adjust the gap between the lower concave plate 4 and the threshing drum 1, the connection depth between the adjusting screw 541 and the nut 545 changes, and the slider 542 is fixed at the fixed position of the adjusting screw 541. Therefore, during the adjustment of the adjusting screw 541, the slider 542 will move along with the adjustment of the adjusting screw 541, thereby driving the adjusting rod 51 to rotate.

[0048] Preferably, the driving part 54 includes a connecting plate 544, and the slider 542 is connected to the third rocker arm 543 via the connecting plate 544. In order to make the connection between the slider 542 and the third rocker arm 543 more stable, the connecting plate 544 is provided to realize the connection between the slider 542 and the third rocker arm 543, so that the slider 542 drives the third rocker arm 543 to move more effectively.

[0049] Preferably, the driving unit 54 includes an indicating device 546, which is connected to the slider 542 to display the adjustment gap between the lower concave plate 4 and the threshing drum 1. The indicating device 546 can be a mechanical and / or electronic device in the form of an indicator board, a display panel, a sensor, etc. In this embodiment, an indicating probe is selected to realize the indication of the adjustment gap between the lower concave plate 4 and the threshing drum 1. Specifically, the indicating probe is fixed to the slider 542 and moves with the slider 542. The indicating probe moves with the slider 542, and the indicating scale changes.

[0050] Preferably, the driving unit 54 includes a mounting seat 547 and a baffle 548. The mounting seat 547 is connected to the adjusting screw 541, and the slider 542 moves in the mounting seat 547; the mounting seat 547 is fixed to the frame 2, and the baffle 548 is used to assist the adjusting screw 541 in adjusting. In order to make the driving effect of the driving unit 54 better and make the driving force adjusted by the adjusting screw 541 act stably on the third rocker arm 543, the driving unit 54 is provided with a mounting seat 547 and a baffle 548. The mounting seat 547 is fixed to the frame 2, and the slider 542 moves in the limited position of the mounting seat 547; the baffle 548 is provided to limit the position of the adjusting screw 541 and the indicating device 546, and assist the adjusting screw 541 in rotating; the adjusting screw 541 is connected to the mounting seat 547, and the adjusting screw 541 passes through the mounting seat 547 and is connected to the nut 545.

[0051] Preferably, when the driving part 54 is disposed at one end of the adjusting rod 51, the second rocker arm 522 is integrally connected with the third rocker arm 543. Since the second rocker arm 522 and the third rocker arm 543 are simultaneously connected with the adjusting rod 51, the third rocker arm 543 drives the adjusting rod 51 to rotate, and the adjusting rod 51 drives the third rocker arm 543 to rotate, so the third rocker arm 543 can also directly drive the second rocker arm 522, so the second rocker arm 522 and the third rocker arm 543 are integrally connected with the adjusting rod 51.

[0052] Preferably, one end of the adjusting rod 51 is connected to the frame 2, the adjusting rod 51 and the frame 2 are fixed by a connecting seat 511, and the adjusting rod 51 rotates in the connecting seat 511. In the process of adjusting the gap between the lower concave plate 4 and the threshing drum 1, the adjusting rod 51 needs to be rotated to achieve this process, so the adjusting rod 51 and the frame 2 cannot be directly welded or bolted. In order to facilitate the rotation of the adjusting rod 51, a connecting seat 511 is provided on the frame 2, the adjusting rod 51 is connected to the connecting seat 511, and the adjusting rod 51 can rotate in the connecting seat 511.

[0053] Preferably, the first connecting rod 531 includes a first pull plate 5311 and a first screw rod 5312, the first screw rod 5312 is connected to the first pull plate 5311, one end of the first screw rod 5312 is connected to the first rocker arm 521, and the first pull plate 5311 is connected to the lower concave plate 4. In the process of adjusting the gap between the lower concave plate 4 and the threshing drum 1, the adjusting mechanism 5 needs to set the first connecting rod 531 and the second connecting rod 532 in a symmetrical position. However, due to the large number of overall structures of the threshing device 100, it is difficult to determine the symmetrical position of the first connecting rod 531 and the second connecting rod 532, and the installation is complicated. In order to save installation time, the first connecting rod 531 is set as the first pull plate 5311 and the first screw rod 5312, and the first pull plate 5311 is pre-set on the lower concave plate 4. During the installation process, it is only necessary to connect and fix the first screw rod 5312 and the first pull plate 5311, without adjusting the position of the first pull plate 5311 and the lower concave plate 4.

[0054] The embodiment further provides a harvester, comprising the above threshing device 100. This harvester can realize continuous adjustment of the gap between the lower concave plate 4 and the threshing drum 1, is suitable for harvesting grains of different types and maturity, and the adjustment mechanism 5 has a simple structure, a simple adjustment method, and is easy to operate.

[0055] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A threshing device, characterized in that: include: A threshing drum, which is used to complete the threshing process of crops; A frame, on which the threshing drum is fixed; An upper cover plate, wherein the upper cover plate is arranged above the threshing drum and is fixed on the frame; A lower concave plate, the lower concave plate is placed below the threshing drum, and the lower concave plate is hinged at one side where the lower concave plate is connected to the upper cover plate; An adjusting mechanism, the adjusting mechanism is disposed below the lower concave plate and on the other side of the hinged joint between the lower concave plate and the upper cover plate, and is used to adjust the gap between the lower concave plate and the threshing drum; The regulating mechanism comprises: An adjusting rod, the adjusting rod is rotatably arranged and arranged along the direction of the axis of the threshing drum; A rocker arm, one end of which is fixedly connected to the adjusting rod and rotates synchronously, and the rocker arm comprises a first rocker arm disposed at one end of the adjusting rod and a second rocker arm disposed at the other end of the adjusting rod; A connecting rod, one end of which is hinged to the rocker arm, and the other end of which is connected to the lower concave plate, wherein the connecting rod comprises a first connecting rod connected to the first rocker arm and a second connecting rod connected to the second rocker arm; The driving part is placed under the adjusting rod to drive the adjusting rod to rotate. The driving part is connected to the adjusting rod. The rotation of the adjusting rod drives the rocker arm to rotate. The rocker arm pulls the connecting rod to move up and down, thereby driving the opening and closing of the lower concave plate to adjust the gap between the lower concave plate and the threshing drum.

2. A threshing device as claimed in claim 1, characterized in that: The driving part comprises an adjusting screw for adjusting the gap between the lower concave plate and the threshing drum and a slider connected to the adjusting screw, wherein the slider is connected to the adjusting rod via a third rocker arm; When the adjusting screw rotates, the sliding block moves, and the third rocker arm is connected to the adjusting rod to adjust the gap between the lower concave plate and the threshing drum.

3. A threshing device as claimed in claim 2, characterized in that: One end of the adjusting screw is provided with a thread, the sliding block is fixed on the adjusting screw and moves along with the adjusting screw, and one end of the adjusting screw provided with a thread is connected with a nut.

4. A threshing device as claimed in claim 2, characterized in that: The driving part comprises a connecting plate, and the sliding block is connected to the third rocker arm via the connecting plate.

5. A threshing device as claimed in claim 4, characterized in that: The driving part comprises an indicating device, which is connected to the slider and is used to display the adjustment gap between the lower concave plate and the threshing drum.

6. A threshing device as claimed in claim 5, characterized in that: The driving part includes a mounting seat and a baffle, the mounting seat is connected to the adjusting screw, and the slider moves in the mounting seat; the mounting seat is fixed to the frame, and the baffle is used to assist the adjusting screw in adjusting.

7. A threshing device as claimed in claim 6, characterized in that: When the driving part is arranged at one end of the adjusting rod, the second rocker arm is integrally connected with the third rocker arm.

8. A threshing device as claimed in claim 7, characterized in that: One end of the adjusting rod is connected to the frame, the adjusting rod and the frame are fixed via a connecting seat, and the adjusting rod rotates in the connecting seat.

9. A threshing device as claimed in claim 8, characterized in that: The first connecting rod includes a first pull plate and a first screw rod, the first screw rod is connected to the first pull plate, one end of the first screw rod is connected to the first rocker arm, and the first pull plate is connected to the lower concave plate.

10. A harvester, characterized in that: The harvester comprises the threshing device according to any one of claims 1-9.

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